Summary
- Farasis Energy has tested EV battery cells through cycles representing a cumulative million miles of travel
- Testing involved cycling the cells over 5,000 times, taking 24-36 months, and evaluated the aging characteristics of nickel-cobalt-manganese (NCM) cells
- The cells could last a million miles over 15 years while retaining over 70% of their capacity
- Testing scenarios included fast charging and high depth of discharge, conducted in varying temperatures representative of major automotive markets
- Farasis achieved long cycle life by using advanced materials, charging strategies, and packaging technologies to mitigate risks associated with thermal propagation
Article
China’s Farasis Energy has conducted extensive testing on its EV battery cells, subjecting them to cycles representing travel over a cumulative million miles. This involved cycling the cells over 5,000 times, a process that typically takes 24-36 months of accelerated testing. The company tested its nickel-cobalt-manganese (NCM) cells, specifically the P75 and P73 models, in order to evaluate their aging characteristics and longevity. The results of the testing indicated that these cells could potentially last a million miles over a span of 15 years while retaining over 70% of their capacity.
The testing conducted by Farasis Energy included various scenarios such as fast charging, high depth of discharge, and testing at different temperatures to simulate conditions in major automotive markets like the coastal US, Western Europe, and China. These tests aimed to replicate the real-life conditions that battery packs may encounter, ensuring that the cells are robust and reliable for extended use in electric vehicles. The company’s focus on advanced materials and charging strategies has enabled them to achieve long cycle life for their cells, ensuring durability and performance over extended periods.
Farasis Energy has developed innovative technologies in the design and packaging of their battery cells to enhance safety and performance. For instance, the separators of the cells are coated with semi-solid gel to reduce electrolyte volume while maintaining high ion conductivity and stability. The cathode and anode materials demonstrate stability, and the interface between the electrolyte and electrode is optimized for improved performance. Charging protocols have also been optimized to reduce lithium plating and heat generation, which helps in minimizing the reactions that lead to capacity loss in the cells.
One of the key advancements highlighted by Farasis Energy is their packaging technologies that address thermal management and safety concerns associated with battery cells. By implementing features such as a directional exhaust system, multisided thermal barrier protection, thermoelectric separation, and phase change materials for heat absorption during thermal events, the company aims to mitigate the risks of thermal propagation and ensure the safe operation of their battery packs. These innovations contribute to the overall reliability and safety of Farasis Energy’s EV battery cells, enhancing their appeal for use in electric vehicles.
The company’s commitment to developing durable and high-performing battery cells is evident in their rigorous testing procedures and focus on material science and design innovations. By conducting extensive testing that simulates real-world usage conditions and incorporating advanced materials and charging strategies, Farasis Energy aims to provide electric vehicle manufacturers with reliable and long-lasting battery solutions. Their emphasis on safety through innovative packaging technologies further demonstrates their dedication to producing high-quality products that meet the demanding requirements of the automotive industry.
Overall, Farasis Energy’s testing of EV battery cells to simulate a cumulative million miles of travel, coupled with their focus on advanced materials, charging strategies, and innovative packaging technologies, highlights their dedication to providing durable and high-performance battery solutions for electric vehicles. The company’s success in achieving long cycle life for their cells and ensuring safety through advanced packaging designs positions them as a leading player in the development of reliable and efficient battery technology for the automotive industry.
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