In recent years, accidents caused by battery safety issues have occurred frequently, and the consequences of many problems have been alarming, once again sounding the alarm for the safety of lithium-ion batteries. With the increasing demand from consumers for the electrical performance and safety of lithium-ion batteries, battery manufacturers, as well as regulatory authorities and industry associations in various countries, are paying more attention to the safety performance testing of lithium-ion batteries. Improving the level of safety performance testing of lithium-ion batteries is the trend.

　　Classification of batteries

　　Batteries are divided into three categories:

　　1. Chemical battery

　　Chemical primary batteries, secondary batteries (lead-acid batteries, aluminum batteries, hydrogen batteries, lithium-ion batteries), fuel cells

　　2. Physical battery

　　Solar cells, double-layer electrical capacitors, thermal cells

　　3. Biological batteries

　　Enzymatic hydrolysis battery and dispersed biological battery

　　Lithium Battery (1ithiUmBattery, abbreviated as 1B)

　　Lithium primary battery (also known as lithium primary battery, Primary1B)

　　Lithium rechargeable battery (also known as lithium rechargeable battery, Rechargeab1e1B)

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