Do batteries have thermal runaway risk during overcharge?
The study systematically evaluated the thermal runaway risk of these batteries under overcharge conditions of 10 V-3 A low current and 10 V-6 A high current. After the overcharge experiments, the batteries were disassembled to analyze the performance of their thermal runaway protection mechanisms during overcharging.
Can a polymer improve the overcharge protection capability of lithium-ion batteries?
A complex polymer with aromatic functional groups, epoxy, or propionate will become a hot spot in the research of overcharge additives for lithium-ion batteries. In a word, improving the overcharge protection capability is the key technology of high-capacity and high-power lithium-ion batteries.
What factors affect battery overcharge safety?
Key factors for battery overcharge safety, such as cathode materials, electrolyte safety, and charging current are concluded in this review. Compared to external protection devices (such as BMS, OSD, CID), the internal protection of overcharge additives are more effective.
Why is battery safety important?
Battery safety plays a critical role in ensuring the reliable operation of lithium-ion batteries during the service lifetime. Lithium-ion batteries often remain in a static state for extended periods during vehicle applications, particularly in high-temperature conditions, which poses significant challenges to their safety performance.
How to reduce the safety risk associated with large battery systems?
To reduce the safety risk associated with large battery systems, it is imperative to consider and test the safety at all levels, from the cell level through module and battery level and all the way to the system level, to ensure that all the safety controls of the system work as expected.
How effective are overcharge additives for lithium-ion batteries?
Compared to external protection devices (such as BMS, OSD, CID), the internal protection of overcharge additives are more effective. A complex polymer with aromatic functional groups, epoxy or propionate, will become a hot spot in the research of overcharge additives for lithium-ion batteries.
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Energy is an international, multi-disciplinary journal in energy engineering and research, and a flagship journal in the Energy area. The journal aims to be a leading peer-reviewed platform
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Ensuring battery safety during overcharge is pivotal for advancing these technologies from research to commercial deployment. While existing external overcharge protection strategies
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