,

Stable high-energy density lithium-ion batteries could lead to fast charging electric vehicles

12v 150ah lithium battery deep marine

A research team has developed a core technology to ensure the charging/discharging stability and long-life of lithium-ion batteries under fast-charging conditions. Their findings were published in Advanced Functional Materials.

A crucial prerequisite for the widespread adoption of electric vehicles (EVs) is the enhancement of lithium-ion battery performance in terms of driving range and safety. Fast charging is also essential for user convenience. However, increasing the energy density of lithium-ion batteries necessitates thicker electrodes, which can lead to battery degradation and performance deterioration during rapid charging.

To address this issue, the KERI team discovered a solution by partially coating the surface of the anode of the lithium-ion battery with aluminum oxide (Al2O3) particles smaller than 1 micrometer. While many researchers worldwide have concentrated on the materials within the electrode, such as introducing functional nanotechnology into anode materials like graphite, Dr. Choi’s team employed a straightforward processing technique to coat the electrode’s surface with aluminum oxide.

Low in cost, excellent in electrical insulation and heat resistance, chemically stable, and possessing good mechanical properties, aluminum oxide is widely used in various ceramics.

The KERI researchers found that aluminum oxide particles effectively control the interface between the anode and the electrolyte in lithium-ion batteries, forming an interfacial highway for efficient Li+ transport. This prevents the electrodeposition of lithium (an irreversible change that makes the lithium unavailable for additional charging and discharging) during fast charging, thereby ensuring the stability and lifespan of the lithium-ion battery during charging and discharging.

Another advantage of this technology is that it enables an increase in the energy density of lithium-ion batteries. Introducing other functional materials into the electrode’s interior to improve performance and stability often complicates the synthesis process and reduces the amount of reversible lithium (initial coulombic efficiency). It also increases the electrode thickness, leading to performance deterioration under fast charging conditions.

li-ion-battery

However, the KERI technology involves surface treatment of the graphite anode, rather than modifying the interior active graphite materials. This approach achieves stable performance even under fast charging conditions for high-energy-density thick-film electrodes without a loss in the amount of reversible lithium.

Through various tests, the team confirmed that the high-energy-density anode coated with aluminum oxide (4.4 mAh/cm2) exhibits world-class performance, maintaining more than 83.4% of its capacity (residual capacity ratio) even after 500 cycles of rapid charging. They have verified this performance with pouch cells of up to 500mAh. The team is now planning to scale up the technology to make it applicable to large-area, medium- to large-capacity cells.

The research team was led by Dr. Choi Jeong Hee at the Korea Electrotechnology Research Institute (KERI) Battery Materials and Process Research Center, in cooperation with a Hanyang University team mentored by Professor Lee Jong-Won and a Kyunghee University team mentored by Professor Park Min-Sik.

“Convenient fast charging and the energy density of lithium-ion batteries have long been considered a trade-off, which has hindered the widespread adoption of electric vehicles,” said Dr. Choi. “Our work will help develop stable, high-energy-density lithium batteries capable of fast charging. This advancement will contribute to the wider adoption of EVs and support the achievement of national carbon neutrality.”

Patents have been registered in both Korea and the United States.

More information: Jeong‐Hee Choi et al, Multi‐Interface Strategy for Electrode Tailoring Toward Fast‐Charging Lithium‐Ion Batteries, Advanced Functional Materials (2024). DOI: 10.1002/adfm.202400414

Journal information: Advanced Functional Materials

 

 

,

How do you charge a li ion battery

How to Charge a Li Ion Battery: Best Practices and Safety Tips

Lithium-ion (Li-ion) batteries are a cornerstone of modern portable electronics, powering everything from smartphones to laptops and electric vehicles. Known for their high energy density and long service life, these batteries require proper handling to ensure safety and maximize battery life. Here’s a detailed guide on how to charge Li-ion batteries effectively and safely.

Understanding Li Ion Battery Charging

  1. Basics of Lithium-Ion Batteries:
  • Chemistry and Charging: Li-ion batteries store energy through the movement of lithium ions from the positive electrode (cathode) to the negative electrode (anode) during discharge and back when charging. Charging a Li-ion battery involves applying an external electric current to reverse the natural discharge process.
  1. Charging Phases:
  • Phase 1 – Constant Current (CC): The battery is charged at a constant current until it reaches its peak voltage, typically around 4.2 volts per cell.
  • Phase 2 – Constant Voltage (CV): Once the peak voltage is reached, the charging voltage is held constant while the current gradually decreases until it’s sufficiently low, indicating that the battery is fully charged.

Proper Charging Techniques

  1. Using the Right Charger:
  • OEM Chargers: Always use the charger that comes with your device or one that the manufacturer recommends. These chargers are specifically designed to match the electrical requirements of the battery, ensuring safe and efficient charging.
  • Avoid Cheap Alternatives: Low-quality chargers may not regulate voltage and current appropriately, which can lead to overcharging, significantly reducing battery life and increasing the risk of overheating or explosion.
  1. Optimal Charging Conditions:
  • Ambient Temperature: Charge Li-ion batteries at room temperature. Extreme temperatures can affect battery performance and safety, with hot conditions increasing the risk of thermal runaway.
  • Partial Charging: Unlike nickel-based batteries, Li-ion batteries do not have a charge memory, so frequent full discharges are not necessary and can actually be detrimental. It’s better to charge the battery partially and frequently.

Li ion battery

Safety Tips and Maintenance

  1. Monitoring During Charging:
  • Avoid Overnight Charging: Even though most modern chargers stop charging when the battery is full, it’s safer not to leave batteries charging unattended for extended periods, especially overnight.
  • Physical Inspection: Regularly inspect the battery for any signs of damage, such as swelling, heat, or leakage. If any of these signs are present, stop using the battery and replace it.
  1. Long-Term Health of the Battery:
  • Storage: If you need to store your Li-ion battery for an extended period, do so at a 40-50% charge level. Storing a battery either fully charged or fully discharged can speed up its degradation.
  • Calibration: While not necessary every charge cycle, periodically letting the battery discharge to around 20% then charging it fully can help calibrate battery gauge sensors.

Himax Electronics: Enhancing Battery Charging Safety and Efficiency

Himax Electronics is dedicated to improving the safety and longevity of Li-ion batteries through innovative technologies and smart solutions:

  1. Advanced Battery Management Systems:
  • Himax BMS technologies ensure optimal charging by precisely managing the amount of current and voltage delivered to the battery throughout the charging cycle. This not only protects the battery from overcharging but also optimizes its overall health and efficiency.
  1. Cutting-Edge Charger Designs:
  • Himax develops chargers that adapt to the needs of Li-ion batteries, incorporating features such as temperature control, voltage regulation, and smart cutoff systems. This proactive approach ensures that the batteries are charged in the safest way possible, enhancing user safety and battery longevity.

Advanced Charging Technologies and Battery Care with Himax Electronics

Himax Electronics is not only at the forefront of battery management systems but also pioneers in the development of advanced charging technologies that enhance both safety and efficiency. Let’s delve deeper into their contributions and provide additional maintenance tips to ensure the optimal performance of lithium-ion batteries.

Innovative Charging Solutions by Himax Electronics

Himax Electronics has developed several key technologies that make charging lithium-ion batteries safer and more efficient:

  1. Smart Charging Algorithms:
  • Adaptive Charging: Himax chargers use algorithms that adapt the charging rate based on the battery’s current capacity, its temperature, and its age. This adaptive charging helps maximize battery life by avoiding stress while still ensuring efficient charging times.
  • Pulse Charging: This technique involves charging the battery in short bursts, which can help reduce heat build-up and minimize the risk of damaging the battery, thereby extending its overall lifespan.
  1. Integrated Safety Features:
  • Multi-Level Protection: Himax’s charging devices come equipped with several layers of protection, including over-voltage, over-current, and over-temperature protection. These safety features ensure that the battery remains within safe operating parameters, drastically reducing the risk of accidents.
  • Automatic Cut-Off: Himax chargers are designed to automatically cut off the power once the battery is fully charged. This prevents overcharging, which is one of the key contributors to lithium-ion battery degradation and potential failure.

Li ion battery

Maintaining Your Li Ion Battery

Proper maintenance of lithium-ion batteries can significantly extend their operational life and maintain their performance. Here are additional tips:

  1. Regular Cleaning:
  • Battery and Device Contacts: Keep the battery contacts and the contacts on the device clean. Accumulated dirt or debris can cause poor connection and increased resistance, leading to potential overheating.
  • Use a Dry Cloth: Clean the contacts gently with a dry cloth. Avoid using any liquids or abrasive materials that could damage the contacts or the battery casing.
  1. Avoid Extreme Discharging:
  • Keep Charge Levels Optimal: Frequently allowing your battery to discharge completely can shorten its lifespan. Try to keep the battery charged between 20% to 80% to optimize its lifespan and maintain good health.
  1. Use Quality Accessories:
  • Certified Accessories Only: Always use accessories that are certified by the device manufacturer. Non-certified accessories might not match the specific power requirements of your battery, potentially leading to damage.
  1. Software Updates:
  • Device Updates: Keep your electronic devices updated. Manufacturers often release software updates that optimize battery usage and improve charging strategies based on the latest research and feedback.

Conclusion: Charging Forward with Himax Electronics

Himax Electronics continues to lead the way in lithium-ion battery technology, providing solutions that enhance the safety, efficiency, and longevity of batteries across various applications. By integrating advanced charging technologies and robust safety features, Himax is helping to shape a future where battery reliability and performance meet the demands of an increasingly energy-dependent world.

Whether for consumer electronics, automotive applications, or industrial uses, embracing the best practices for charging and maintenance as recommended by leaders like Himax ensures that your lithium-ion batteries deliver optimal performance throughout their service life. For more information about battery care or to explore Himax’s range of innovative products, visit their website or contact their support team.

 

,

Why Can Lithium-Ion Batteries Explode? Detailed Examination of Underlying Causes

high quality li ion battery

Introduce

Lithium-ion batteries power a vast array of devices and are celebrated for their high energy output and rechargeability. However, their capability to store a large amount of energy in a small space also brings significant risks, particularly the risk of explosions, which, while rare, can have severe consequences.
  1. Thermal Runaway Explanation:
    1. Chemical and Physical Causes: Thermal runaway is primarily a result of chemical reactions that generate excessive heat; this can be triggered by several factors. When the internal temperature of a lithium-ion battery rises to a point where the heat can no longer efficiently dissipate, it can cause the electrolyte and other battery materials to decompose and generate more heat. This runaway reaction is self-sustaining and accelerates once it begins.
    2. Cascading Failures Leading to Explosions: In thermal runaway, the breakdown of electrolytes releases gases that increase internal pressure. If the battery casing ruptures, it may expose the highly reactive lithium to oxygen, resulting in a fire or explosion.
  2. Internal Short Circuits:
    1. Mechanical Damage and Manufacturing Defects: Internal shorts are often caused by physical damage, such as dropping the device, or by flaws in the battery’s construction, such as poorly aligned electrodes or inadequate separator thickness. These defects can create conditions where the positive and negative electrodes contact directly, causing a short circuit.
    2. Effect on Battery Stability: Short circuits can rapidly increase internal temperature and pressure, overwhelming the battery’s built-in safety mechanisms and leading to a breach of the cell casing.
  3. Overcharging Risks:
    1. Charger Compatibility and Regulation: Using non-standard or incompatible chargers can lead to overcharging by failing to properly regulate the voltage and current flowing into the battery. Overcharging a lithium-ion battery can cause lithium metal plating on the anode, creating dendrites that can pierce the separator and create a short circuit.
    2. Battery Management System’s Role: A sophisticated battery management system (BMS) ensures that each cell within a battery pack is charged correctly and prevents cells from overcharging—a critical safeguard against thermal runaway and explosions.
  4. Flammable Electrolytes:
    1. Composition and Combustibility: The electrolytes in lithium-ion batteries typically consist of organic carbonates, which are flammable. Their role is to facilitate ionic movement between the electrodes, but when compromised, they pose a significant fire risk.
    2. Initiation and Propagation of Fire: If the battery casing is compromised and the flammable electrolyte is exposed to air or a spark, it can ignite. Moreover, once one cell catches fire, the heat can propagate to adjacent cells, escalating to a full battery pack explosion.

lithium battery high quality

Preventive Measures to Mitigate Explosion Risks in Lithium-Ion Batteries

Ensuring the safety of lithium-ion batteries involves a multifaceted approach, incorporating advanced technology, rigorous testing, and user education. Here’s a detailed look at these preventive measures:

Design and Manufacturing Enhancements

  1. Advanced Battery Design:
    1. Improved Separator Technology: One of the critical components in the safety of lithium-ion batteries is the separator, which keeps the anode and cathode from directly contacting each other. Himax Electronics uses advanced materials that not only improve the thermal stability of the separators but also enhance their mechanical strength to prevent rupture under stress.
    2. Robust Electrode Architecture: Himax designs electrodes with enhanced structural integrity to minimize the risk of damage that can lead to internal shorts. This includes the use of coatings and additives that improve the electrical stability of the electrodes and reduce the formation of dendrites during charging.
  2. Quality Control Protocols:
    1. Stringent Manufacturing Standards: Himax maintains rigorous quality control measures throughout the manufacturing process. This includes the use of automated precision equipment that minimizes human error and ensures that each battery component meets exact specifications.
    2. Regular Testing and Inspection: Each battery batch undergoes extensive testing, including X-ray inspection, electrical tests, and stress tests, to detect any defects that could compromise safety before the products reach consumers.

Battery Management Systems (BMS) and Charging Regulations

  1. Sophisticated BMS Features:
    1. Real-Time Monitoring and Control: Himax’s advanced BMS continuously monitors the battery’s voltage, current, and temperature. It can make instantaneous adjustments to the charging process and operational conditions, preventing conditions that lead to overheating or overcharging.
    2. Predictive Maintenance Capabilities: Leveraging artificial intelligence, Himax’s BMS can predict potential failures based on historical data and real-time performance, allowing for preemptive maintenance actions to be taken before hazardous conditions develop.
  2. Safe Charging Practices:
    1. Charger Compatibility and Certification: Himax ensures that all chargers provided with their devices are specifically designed to match the battery’s charging requirements, reducing the risk of overcharging. All chargers comply with international safety standards and are thoroughly tested for reliability and safety.
    2. Consumer Education on Charging Safety: Himax actively educates customers on the importance of using appropriate chargers and adhering to recommended charging practices. This includes clear guidelines on how to care for the battery to maximize lifespan and maintain safety.

Himax Electronics: Pioneering Safer Battery Technologies

Himax Electronics is not only implementing these safety measures but is also at the forefront of innovating new technologies that enhance battery safety further.
  1. Innovative Research and Development:
    1. Solid-State Battery Technology: Himax is investing in the research and development of solid-state batteries, which promise even greater safety by replacing flammable liquid electrolytes with non-flammable solid materials. These batteries are less susceptible to leaks and thermal runaway, providing a safer alternative to traditional lithium-ion technology.
    2. Thermal Management Innovations: Advanced cooling solutions are being developed to more effectively dissipate heat during battery operation and charging, further reducing the risk of overheating.
  2. Global Safety Initiatives and Compliance:
    1. Leadership in Safety Standards: Himax not only follows but helps to set international safety standards for battery manufacturing and use. They actively participate in global forums and regulatory bodies to share their knowledge and advocate for higher safety protocols across the industry.
    2. Collaborations with Safety Organizations: Through partnerships with safety and environmental organizations, Himax contributes to the ongoing development of safer battery recycling and disposal methods, ensuring that their commitment to safety extends throughout the battery lifecycle.

high quality battery

Conclusion: Elevating Safety in Lithium-Ion Battery Technology with Himax Electronics

As the demand for more powerful and efficient batteries continues to grow, so does the need for enhanced safety measures. Despite its vast benefits, LI-ION BATTERY comes with inherent risks that must be carefully managed. The potential for thermal runaway and explosions, while rare, underscores the importance of continuous innovation in battery technology and safety protocols.
Himax Electronics stands at the forefront of this critical field, not only adhering to established safety standards but actively driving new developments that set the bar higher across the entire industry. Through rigorous testing, advanced battery management systems, and cutting-edge research into safer materials and designs, Himax is shaping a future where battery-related hazards are significantly mitigated.
,

How to dispose of li ion batteries

In-Depth Exploration of Lithium-Ion Battery Disposal Understanding Lithium-Ion Batteries and Their Environmental Impact

Lithium-ion batteries, ubiquitous in modern electronic devices, vehicles, and energy storage solutions, pose significant environmental and health risks if not managed properly at the end of their life. This section explains the material composition of these batteries and the potential hazards associated with their disposal.

  1. Detailed Composition and Hazards:
  • Material Content: Lithium-ion batteries are complex assemblies containing hazardous materials that require careful handling. Key components include lithium salts used in the electrolyte, various metals such as cobalt, nickel, and manganese in the cathode, and copper and aluminum in the current collectors. Each of these materials has specific environmental and health risks associated with it if released into the environment.
  • Environmental Risks: When improperly disposed of, the heavy metals and chemicals in lithium-ion batteries can leach into the soil and groundwater, leading to contamination that can harm wildlife and human health. For instance, cobalt, while essential for the battery’s stability and energy density, is toxic to the lungs and skin upon prolonged exposure and can cause environmental damage if it enters water systems.
  1. The Complexity of Recycling:
  • Recycling Challenges: The diversity of materials within lithium-ion batteries complicates recycling processes. Efficient separation of these materials is crucial for effective recycling but is often hindered by the battery’s design and the economic viability of the recycling processes. Advanced recycling technologies can recover many of the valuable materials from spent batteries, but these processes are costly and require significant technological investment.
  • Improving Recycling Outcomes: Advances in mechanical and chemical recycling processes have made it possible to recover more materials at higher purities. These improvements not only enhance the economic feasibility of recycling but also reduce the environmental impact by diverting hazardous materials from landfills and reducing the need for virgin material extraction.

Lithium Ion batteries

Steps for Proper Disposal of Lithium-Ion Batteries

Proper disposal involves a series of steps each designed to minimize environmental impact and maximize safety. Here’s how to approach it responsibly:

  1. Preparation for Recycling:
  • Discharge Safely: Reducing the charge to about 50% can decrease the risk of thermal events during handling and transport. This step should be done in a controlled environment using appropriate equipment to monitor and manage the discharge process.
  • Physical Handling: Ensure that batteries are physically intact, with no visible signs of damage such as swelling or leakage. Damaged batteries require special handling procedures to prevent risks of fire or toxic exposure.
  1. Locating Recycling Facilities:
  • Specialized Recyclers: Identify recycling facilities that are equipped to handle lithium-ion batteries. These facilities have the necessary technology to process the complex chemistries and recover valuable materials safely.
  • Certification Standards: Ensure that the chosen recycling facility complies with local and international standards for environmental protection and worker safety, such as R2 (Responsible Recycling) or e-Stewards certification.
  1. Transportation and Regulatory Compliance:
  • Regulations: Adhere to local, national, and international regulations regarding the transport of hazardous materials. This includes proper documentation, packaging, and labeling of lithium-ion batteries to ensure safe transit.
  • Logistical Considerations: Work with logistics providers who specialize in hazardous materials to ensure that batteries are transported in compliance with legal and safety standards.

Lithium Ion batteries

Himax Electronics’ Role in Promoting Safe Battery Disposal

Himax Electronics is deeply committed to responsible environmental practices, which is reflected in their approach to the design, use, and disposal of batteries.

  1. Eco-Friendly Design and Manufacturing:
  • Sustainability Initiatives: Himax designs batteries with the end-of-life in mind, incorporating features that simplify disassembly and recycling. This includes using fewer toxic materials and designing for easier separation of components.
  • Reduction of Hazardous Substances: Himax adheres to global standards like RoHS (Restriction of Hazardous Substances), which limits the use of toxic elements in electronic products.
  1. Consumer Education and Recycling Support:
  • Awareness Campaigns: Himax conducts campaigns to educate consumers about the importance of recycling and provides information on how to do so responsibly. They offer guidelines on their website and through product manuals that detail the steps users should take to dispose of batteries safely.
  • Partnerships with Recycling Centers: Himax collaborates with certified recycling centers to ensure that customers have convenient and safe options for disposing of their spent batteries.

Conclusion

The disposal and recycling of lithium-ion batteries require a collaborative effort from manufacturers, consumers, and recyclers. By understanding and participating in proper disposal practices, consumers can contribute significantly to environmental sustainability. Himax Electronics remains at the forefront of this initiative, continuously improving its products and practices to support global recycling efforts.

,

What is li ion battery

lithium-ion-battery-pack

Introduction to Lithium-Ion Batteries

Lithium-ion batteries are more than just a power source; they are a transformative technology that has revolutionized energy storage across many sectors. From powering the smallest consumer electronics to driving the biggest electric vehicles, lithium-ion batteries have become synonymous with efficiency and reliability.
Historical Context:
  • Development: The development of lithium-ion batteries began in the 1970s, with the first non-rechargeable lithium batteries. The rechargeable versions were commercially introduced by Sony in 1991, after which they rapidly began to replace older nickel-cadmium batteries, due to their superior characteristics.
  • Innovation and Improvement: Over the decades, continuous improvements in cathode materials and electrolyte solutions have significantly increased the energy density, cycle life, and safety of these batteries.
Fundamental Properties:
  • Chemistry and Composition: At their core, lithium-ion batteries consist of three main components: a lithium-based cathode, a carbon anode, and an electrolyte. The choice of materials for the cathode and anode and the quality of the electrolyte play critical roles in defining the battery’s performance, temperature range, and safety.
  • Energy Storage Mechanism: These batteries store energy through the movement of lithium ions between the cathode and anode during charge and discharge cycles. This ionic movement is facilitated by the electrolyte, which supports ionic conductivity while insulating electrical contacts to prevent short circuits.

li-ion-battery

Detailed Working of Lithium-Ion Batteries

Understanding the electrochemical reaction that powers lithium-ion batteries provides insights into their efficiency and capabilities:
  1. During Discharge:
    1. The Movement of Ions: When the battery discharges, lithium ions move from the anode to the cathode through the electrolyte while electrons flow through the external circuit to power the device.
    2. Energy Release: The movement of electrons from the anode to the cathode through the external circuit releases energy, which is harnessed to power electronic devices.
  2. During Charging:
    1. Ion Migration: During charging, an external electrical power source forces electrons to move back to the anode, pushing lithium ions back through the electrolyte from the cathode to the anode.
    2. Energy Storage: This movement recharges the battery by restoring the lithium ions to their original position in the anode, readying the battery for another discharge cycle.
Charging Dynamics:
  • Rate of Charging: The rate at which a lithium-ion battery can be charged is dependent on the speed at which the lithium ions can safely migrate from the cathode to the anode without causing undue stress or heat, which could degrade the battery’s materials.
  • Thermal Management: Proper thermal management during charging is crucial to maintaining battery integrity and longevity. Excessive heat during charging can lead to thermal runaway, which can damage the battery or, in extreme cases, cause it to catch fire or explode.

Applications of Lithium-Ion Batteries

The versatility of lithium-ion batteries can be seen in their wide range of applications, each benefiting from different aspects of the technology:
  1. Consumer Electronics:
    1. Devices Powered: Smartphones, laptops, tablets, and portable power tools all rely on lithium-ion batteries for their energy needs.
    2. Benefits Utilized: The high energy density and ability to scale down in size make lithium-ion batteries ideal for portable devices.
  2. Electric Vehicles (EVs):
    1. Role in EVs: Lithium-ion batteries are critical for the propulsion of electric vehicles. They provide the high energy necessary to power electric motors and manage the extensive range of requirements.
    2. Innovation in EVs: The push for more efficient and longer-lasting batteries has led to innovations in lithium-ion technology, particularly in increasing the range and reducing the charging time.
  3. RenXtorage for Renewable Energy:
    1. Integration with Renewable Sources: Lithium-ion batteries are increasingly used to store energy from renewable sources such as solar and wind, allowing for the stabilization of power supply and improving grid reliability.
    2. Grid Storage and Backup: These batteries provide essential backup and load-leveling capabilities, ensuring a consistent energy supply despite the intermittent nature of renewable sources.

Safety Concerns with Lithium-Ion Batteries

Lithium-ion batteries, while efficient and powerful, pose certain safety risks if not properly managed. Understanding these risks and implementing safety measures are crucial for maintaining battery health and ensuring user safety.
  1. Thermal Runaway:
    1. Cause: Thermal runaway occurs when a battery overheats, leading to a self-sustaining chain reaction that can result in fires or explosions. This can be triggered by overcharging, physical damage, or manufacturing defects.
    2. Prevention: To prevent thermal runaway, it’s important to use a battery management system (BMS) that monitors the battery’s temperature, voltage, and current, and interrupts the power if critical values are exceeded.
  2. Electrolyte Leakage:
    1. Risks: Some lithium-ion batteries use liquid electrolytes that, if leaked, can cause corrosion or short circuits, potentially leading to fire hazards.
    2. Management: Using batteries with robust casing and built-in safety vents can help prevent leaks and contain any potential issues within the battery itself.

Best Practices for Maintaining Lithium-Ion Batteries

Proper maintenance of lithium-ion batteries not only enhances their performance but also extends their lifespan and reduces safety risks.
  1. Regular Monitoring:
    1. Voltage and Current Checks: Regularly monitor the voltage and current during charging and discharging to ensure they remain within safe limits. Avoid complete discharges and overcharges as they stress the battery.
    2. Temperature Monitoring: Keep the battery at room temperature. Avoid exposure to high temperatures to prevent overheating and potential thermal runaway.
  2. Routine Inspections:
    1. Visual Inspections: Regularly inspect the battery for signs of swelling, overheating, or damage to the battery case. These signs can indicate internal problems that could lead to failure.
    2. Cleaning Contacts: Keep battery contacts clean and free from debris to ensure good electrical connection and prevent power inefficiencies.
  3. Proper Storage:
    1. Charge Level for Storage: Store lithium-ion batteries at a 50% charge level if not in use for an extended period. This minimizes the stress on the battery during storage.
    2. Cool and Dry Environment: Store batteries in a cool and dry place. High moisture levels can lead to corrosion and other issues.

Himax Electronics’ Role in Advancing Lithium-Ion Battery Technology

Himax Electronics is at the forefront of developing technologies that enhance the safety and performance of lithium-ion batteries.
  1. Innovative Battery Management Systems:
    1. Smart BMS Solutions: Himax offers sophisticated BMS solutions that intelligently monitor and manage the state of charge, state of health, and overall battery performance, ensuring optimal safety and extending the battery’s lifespan.
    2. Integration Capabilities: These systems integrate seamlessly with existing battery technologies, providing real-time data and control options to prevent unsafe operating conditions.
  2. Advanced Charging Technologies:
    1. Smart Chargers: Himax provides chargers that adapt their output based on the battery’s current state and ambient conditions, preventing overcharging and overheating, thus maintaining battery integrity and safety.
    2. Efficiency Enhancements: These chargers are designed to maximize charging efficiency, reducing the time needed to charge and minimizing the energy lost as heat, which can degrade battery components over time.
  3. Customer Support and Education:
    1. Comprehensive Support: Himax offers extensive customer support, from troubleshooting assistance to detailed guidance on battery maintenance and safety.
    2. Educational Resources: Himax provides clients with educational materials that help them understand how to best use and maintain their lithium-ion batteries, contributing to safer and more efficient operations.

lithium-ion-battery

Conclusion

The proper use, regular maintenance, and understanding of lithium-ion batteries are critical to maximizing their benefits while ensuring safety. Himax Electronics enhances this realm with cutting-edge technologies and dedicated support, pushing forward the boundaries of what lithium-ion batteries can achieve. With Himax, users not only receive products but also gain a partner committed to their safety and success in using advanced energy solutions.
,

How to discharge the Lipo battery

3.7v-lipo-battery

How to Safely Discharge a LiPo Battery: A Comprehensive Guide

Lithium Polymer (LiPo) batteries are popular in many high-demand electronics due to their lightweight, high energy density, and flexibility in shape and size. Properly discharging these batteries is crucial for safety, longevity, and performance. This article provides a detailed guide on safely discharging LiPo batteries, ensuring optimal use, and extending their lifecycle.

lithium-polymer-battery

Understanding LiPo Batteries

Before discharging a LiPo battery, it is important to understand its composition and how it differs from other battery types:
  • Energy Density: LiPo batteries offer high energy density, which means they can store more energy than other batteries of the same size, making them ideal for performance-critical applications.
  • Voltage Sensitivity: They require careful handling due to their sensitivity to over-discharge and overcharge, which can lead to dangerous situations, including fires.

Reasons for Discharging LiPo Batteries

Discharging LiPo batteries is not just about reducing their charge. It serves several important purposes:
  • Storage: LiPo batteries should not be stored fully charged. The ideal storage voltage for a LiPo battery is around 3.85 volts per cell.
  • Calibration: Regular discharging helps calibrate battery management systems, ensuring more accurate readings of capacity and voltage.
  • Safety: By discharging to safe levels, the risk of chemical degradation and fire is significantly reduced, especially during periods of non-use.

Equipment Needed for Safe Discharge

  • LiPo Discharger: A device designed to discharge LiPo batteries at controlled rates.
  • Voltage Checker: Essential for monitoring the voltage of each cell in the battery to prevent over-discharge.
  • Fireproof Charging Bag or Container: Provides an added layer of safety to contain any potential failures.

Step-by-Step Guide to Discharging

  1. Preparation:
    1. Set up in a well-ventilated area, free from flammable materials.
    2. Ensure the battery is at room temperature and not physically damaged.
  2. Set Up Discharge Equipment:
    1. Place the LiPo battery inside a fireproof bag.
    2. Connect the battery to the discharger, ensuring the balance leads are also connected if available.
  3. Configure the Discharger:
    1. Set the discharger to the correct voltage cut-off, usually 3.0 to 3.3 volts per cell.
    2. Adjust the discharge rate according to the battery’s specifications, typically not exceeding 1C (the battery’s capacity rate).
  4. Monitor the Discharge Process:
    1. Regularly check the cell voltages using the voltage checker.
    2. Watch for any signs of battery distress, such as swelling or excessive heat.
  5. Post-Discharge Care:
    1. Once the battery reaches the target voltage, disconnect it from the discharger.
    2. Store the battery in a cool, dry place, ideally in a fireproof container.

Safety Tips

  • Never leave the discharging battery unattended.
  • Regularly inspect the battery for signs of wear or damage.
  • Always use high-quality and compatible discharging equipment.

Choosing Himax Electronics

Opting for Himax Electronics provides numerous benefits when dealing with LiPo batteries:
  • Quality Products: Himax Electronics offers high-quality, thoroughly tested LiPo batteries and discharging equipment designed to meet rigorous safety standards.
  • Expert Advice: Our team of experts can provide detailed guidance on how to safely manage your LiPo battery needs, from charging to discharging and storage.
  • Customer Support: We are committed to providing excellent customer service and ensuring you have access to support whenever needed.

pouch-battery

Conclusion

Properly discharging your LiPo batteries is essential for maintaining their health and ensuring safe operation. You can effectively manage your batteries’ lifecycle by following the detailed steps and precautions outlined in this guide. For all your LiPo battery needs, consider Himax Electronics, where you’ll find a combination of quality, reliability, and expert support designed to help you get the most out of your battery investments.
,

Iron could be key to less expensive greener lithium-ion batteries, research finds

A green battery revolution

What if a common element, rather than scarce expensive ones, was a key component in electric car batteries? A collaboration co-led by an Oregon State University chemistry researcher is hoping to spark a green battery revolution by showing that iron instead of cobalt and nickel can be used as a cathode material in lithium-ion batteries.

Multiple  reasons of  the important findings

The findings, published in Science Advances, are important for multiple reasons, Oregon State’s Xiulei “David” Ji notes.

“We’ve transformed the reactivity of iron metal, the cheapest metal commodity,” he said. “Our electrode can offer a higher energy density than the state-of-the-art cathode materials in electric vehicles. And since we use iron, whose cost can be less than a dollar per kilogram—a small fraction of nickel and cobalt, which are indispensable in current high-energy lithium-ion batteries—the cost of our batteries is potentially much lower.”

At present, the cathode represents 50% of the cost in making a lithium-ion battery cell, Ji said. Beyond economics, iron-based cathodes would allow for greater safety and sustainability, he added.

As more and more lithium-ion batteries are manufactured to electrify the transportation sector, global demand for nickel and cobalt has soared. Ji points out that in a matter of a couple of decades, predicted shortages in nickel and cobalt will put the brakes on battery production as it’s currently done.

In addition, those elements’ energy density is already being extended to its ceiling level—if it were pushed further, oxygen released during charging could cause batteries to ignite—plus cobalt is toxic, meaning it can contaminate ecosystems and water sources if it leaches out of landfills.

Put it all together, Ji said, and it’s easy to understand the global quest for new, more sustainable battery chemistries.

 

sodium ion battery

The basic work way and basic components of  batteries

A battery stores power in the form of chemical energy and through reactions converts it to the electrical energy needed to power vehicles as well as cellphones, laptops and many other devices and machines. There are multiple types of batteries, but most of them work the same basic way and contain the same basic components.

A battery consists of two electrodes—the anode and cathode, typically made of different materials—as well as a separator and electrolyte, a chemical medium that allows for the flow of electrical charge. During battery discharge, electrons flow from the anode into an external circuit and then collect at the cathode.

In a lithium-ion battery, as its name suggests, a charge is carried via lithium ions as they move through the electrolyte from the anode to the cathode during discharge, and back again during recharging.

Effective utilization of resources

“Our iron-based cathode will not be limited by a shortage of resources,” said Ji, explaining that iron, in addition to being the most common element on Earth as measured by mass, is the fourth-most abundant element in the Earth’s crust. “We will not run out of iron ’til the sun turns into a red giant.”

Ji and collaborators from multiple universities and national laboratories increased the reactivity of iron in their cathode by designing a chemical environment based on a blend of fluorine and phosphate anions—ions that are negatively charged.

The blend, thoroughly mixed as a solid solution, allows for the reversible conversion—meaning the battery can be recharged—of a fine mixture of iron powder, lithium fluoride and lithium phosphate into iron salts.

“We’ve demonstrated that the materials design with anions can break the ceiling of energy density for batteries that are more sustainable and cost less,” Ji said.

“We’re not using some more expensive salt in conjunction with iron—just those the battery industry has been using and then iron powder. To put this new cathode in applications, one needs to change nothing else—no new anodes, no new production lines, no new design of the battery. We are just replacing one thing, the cathode.”

Storage efficiency still needs to be improved, Ji said. Right now, not all of the electricity put into the battery during charging is available for use upon discharge. When those improvements are made, and Ji expects they will be, the result will be a battery that works much better than ones currently in use while costing less and being greener.

“If there is investment in this technology, it shouldn’t take long for it to be commercially available,” Ji said. “We need the visionaries of the industry to allocate resources to this emerging field. The world can have a cathode industry based on a metal that’s almost free compared to cobalt and nickel. And while you have to work really hard to recycle cobalt and nickel, you don’t even have to recycle iron—it just turns into rust if you let it go.”

LiTypes of Lithium-ion

Contribution of  the research

The research was co-led by Tongchao Liu of Argonne National Laboratory and included Oregon State’s Mingliang Yu, Min Soo Jung and Sean Sandstrom.

Scientists from Vanderbilt University, Stanford University, the University of Maryland, Lawrence Berkeley National Laboratory and the SLAC National Accelerator Laboratory also contributed.

More information: Mingliang Yu et al, Unlocking Iron Metal as a Cathode for Sustainable Li-ion Batteries by an Anion Solid-Solution, Science Advances (2024). DOI: 10.1126/sciadv.adn4441. www.science.org/doi/10.1126/sciadv.adn4441

Journal information: Science Advances

,

What is in a lithium ion battery

What is Inside a Lithium Ion Battery? An In-depth Exploration

Lithium-ion (Li-ion) batteries are integral to powering modern life, from mobile phones and laptops to electric vehicles and grid storage solutions. Understanding the components that make up these batteries is essential for appreciating their efficiency, versatility, and the cutting-edge technology behind them. This comprehensive guide details the internal workings of lithium-ion batteries and highlights the advantages of using Himax Electronics for your battery needs.

Introduction to Lithium-Ion Battery Components

A lithium-ion battery is more than just an energy storage unit; it is a complex assembly of chemistry and engineering designed to optimize energy density, longevity, and safety. Here are the key components:

  • Cathode (Positive Electrode): The cathode is a critical component that largely determines the capacity and voltage of the battery.  Mading from a lithium metal oxide compound such as lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), or newer materials like lithium iron phosphate (LiFePO4).
  • Anode (Negative Electrode): The anode stores the lithium ions when the battery is charged. Commonly made from graphite, the anode allows lithium ions to embed within its structure during charging and releases them during discharge.
  • Electrolyte: The electrolyte is the medium through which lithium ions move between the cathode and anode when the battery charges and discharges. It is typically composed of a lithium salt dissolved in an organic solvent.
  • Separator: This porous polymer membrane plays a crucial safety role by preventing physical contact between the cathode and anode, which could lead to a short circuit while allowing ions to pass through.

Lithium-Ion Battery

How Lithium-Ion Batteries Work

The basic operation of a lithium-ion battery involves the movement of lithium ions between the anode and cathode through the electrolyte:

  • During Discharge: Lithium ions flow from the anode to the cathode through the electrolyte, while electrons flow through the external circuit to the device being powered, creating an electric current.
  • During Charge: The external power source forces the electrons and lithium ions back to the anode, storing energy for future use.

Benefits of Lithium-Ion Batteries

Lithium-ion batteries offer several advantages that make them the preferred choice for a wide range of applications:

  • High Energy Density: Li-ion batteries provide a significant amount of energy per weight, which is particularly valuable in portable electronics and electric vehicles.
  • Long Lifespan: They can typically handle hundreds to thousands of charge/discharge cycles.
  • Low Self-Discharge: Unlike other battery types, Li-ion batteries lose their charge very slowly when not in use.

Challenges and Safety Considerations

Despite their advantages, Li-ion batteries come with challenges:

  • Thermal Runaway Risks: If damaged or improperly managed, Li-ion batteries can overheat and lead to fires or explosions.
  • Cost and Resource Intensive: The materials used in Li-ion batteries can be expensive and involve complex manufacturing processes.

Applications of Lithium-Ion Batteries

From everyday consumer electronics to critical roles in renewable energy systems and electric vehicles, lithium-ion batteries are ubiquitous in modern technology due to their efficiency and capacity.

Choosing Himax Electronics for Lithium-Ion Batteries

Himax Electronics stands out in the lithium-ion battery market for several reasons:

  • Quality and Reliability: We provide top-quality lithium-ion batteries that meet rigorous performance and safety standards.
  • Innovation and Technology: Our commitment to research and development ensures access to the latest advancements in battery technology.
  • Expertise and Support: With extensive experience in the battery industry, Himax offers unmatched customer support and technical guidance.

Lithium-Ion Battery

Conclusion

Understanding the internal components and operation of lithium-ion batteries provides valuable insights into their functionality and widespread use. For anyone seeking reliable and high-performance lithium-ion batteries, Himax Electronics offers innovative solutions backed by expert support and quality assurance.

 

,

What is li ion battery

Understanding Lithium-Ion Batteries: Technology, Benefits, and Applications

Lithium-ion (Li-ion) batteries are at the forefront of modern battery technology, powering everything from the smallest electronic devices to large-scale electric vehicles and energy storage systems. This detailed guide explores lithium-ion batteries, how they work, their advantages, limitations, and why choosing Himax Electronics can enhance your experience with these batteries.
18650 li ion

Introduction to Lithium-Ion Batteries

A lithium-ion battery is a type of rechargeable battery that has become the technology of choice for a wide range of electronics, electric vehicles, and renewable energy applications. It operates on the principle of moving lithium ions between the cathode and anode in an electrolyte.

Core Components of Lithium-Ion Batteries

  • Cathode: The cathode is responsible for the voltage of the battery and is made from a lithium metal oxide.
  • Anode: Typically made from graphite, the anode stores and releases lithium ions as the battery charges and discharges.
  • Electrolyte: Composed of salts, solvents, and additives, the electrolyte is the medium through which the lithium ions move.
  • Separator: This critical component prevents physical contact between the anode and cathode while allowing ion transfer.

How Lithium-Ion Batteries Work

The operation of a lithium-ion battery is based on the movement of lithium ions:
  • Charging: During charging, lithium ions move from the cathode to the anode and are stored in the graphite layers of the anode.
  • Discharging: When discharging, the ions move back to the cathode, releasing stored energy that powers devices.

Advantages of Lithium-Ion Batteries

  • High Energy Density: One of the biggest advantages of Li-ion batteries is their high energy density. They can store more energy per unit of weight than most other types of rechargeable batteries, making them ideal for weight-sensitive applications.
  • Long Lifespan: These batteries can endure hundreds to thousands of charge and discharge cycles.
  • Low Self-Discharge: Lithium-ion batteries have a much lower rate of self-discharge than other types of rechargeable batteries.
  • Flexibility in Design: Engineers can shape lithium-ion batteries in numerous ways, which can be particularly advantageous for customizing product designs.

Limitations and Safety Considerations

Despite their many benefits, lithium-ion batteries come with challenges that must be managed:
  • Cost: They are generally more expensive to manufacture than other types of batteries.
  • Sensitivity to High Temperatures: They can degrade quickly if exposed to high temperatures.
  • Safety Risks: If damaged or improperly handled, lithium-ion batteries pose risks such as thermal runaway, which can lead to potential fires or explosions.

Applications of Lithium-Ion Batteries

  • Consumer Electronics: From smartphones to laptops, lithium-ion batteries are used due to their efficiency and long life.
  • Electric Vehicles are favored for their ability to provide a high power-to-weight ratio, enhancing vehicle performance.
  • Renewable Energy Systems: Lithium-ion batteries store excess energy generated by solar panels and wind turbines, facilitating a consistent energy supply regardless of weather conditions.

Choosing Himax Electronics for Lithium-Ion Batteries

Opting for Himax Electronics offers significant benefits:
  • Innovative Solutions: We stay at the cutting edge of battery technology, constantly developing and refining our products.
  • Superior Quality and Safety: Our batteries are engineered to meet strict safety and performance standards, ensuring reliability and durability.
  • Expert Support: Himax Electronics provides comprehensive customer support, from selecting the right battery to optimizing its usage and maintenance.

lithium ion cells

Conclusion

Lithium-ion batteries represent a dynamic and critical element in the global shift towards more efficient and renewable energy sources. Understanding these batteries’ construction, function, and care requirements can help users optimize their use and lifespan. For your lithium-ion battery needs, consider the reliability and innovation offered by Himax Electronics, where we commit to delivering high-quality, advanced battery solutions tailored to meet and exceed your expectations.
,

How to properly maintain UPS lithium battery during use?

ups-system

If the UPS lithium-ion battery is not used and maintained in the correct way, the life of the battery will be shortened. Therefore, on the basis of selecting a regular standard battery, the battery must be properly protected and used.

To ensure the normal operation of UPS lithium-ion battery. We recommended to maintain the lithium battery UPS power system from the following aspects.

Pay attention to various parameters of the UPS

When using a UPS lithium battery, you should pay attention to various parameters of the UPS, such as input voltage range, output waveform, output power, power supply time and conversion time. What’s more, lithium battery brand, machine noise, volume, weight and other parameters. All kinds of UPS are not suitable for working at full load. More than 20% of the power margin should be reserved, and the load should be controlled between 40% and 60% of the rated output power of the UPS.

Proper discharge

When the UPS lithium battery is not used for a long time. We recommended to turn it on every one month and let the UPS be in the inverter working state for at least 2 to 3 minutes in order to activate the battery and extend the service life of the battery. When charging, over-current and over-voltage charging should be avoided as much as possible. Proper discharge helps activate the battery.

Maintain a suitable ambient temperature

An important factor affecting the life of UPS lithium battery is the ambient temperature. Generally, the optimal ambient temperature required by battery manufacturers is between 20-25°C. Once the ambient temperature exceeds 25°C, the battery life will be shortened by half for every 10°C increase.

Replace damaged batteries promptly

In the continuous operation and use of UPS lithium battery, due to differences in performance and quality, it is inevitable that the performance of individual batteries will decline and the storage capacity will not meet the requirements and be damaged. When certain batteries/batteries in the battery pack are damaged, maintenance personnel should inspect and test each battery to eliminate damaged batteries.

Lithium-ion battery

Do not frequently turn off and on the UPS lithium battery power supply

Generally, the UPS power supply must be turned off for 6 seconds before it can be turned on again. Otherwise, the UPS power supply may be in a “start-up failure” state.  In other words, the UPS power supply is in a state where there is neither mains output nor inverter output.

 

UPS power supply has gradually become the protector of important equipment. Due to the uncertainty of the status of UPS lithium-ion batteries, system paralysis and loss of important data have resulted in disastrous consequences and huge losses. Therefore, it is very important to use and maintain UPS lithium-ion batteries correctly.