18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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Characteristics of commonly used protection schemes for lithium batteries

source:Industry News release time:2024-04-24 Hits:     Popular:AG11 battery

  

  Lithium batteries are widely used in many products, but due to their active chemical properties, they require additional charging and discharging protection circuits for safety protection. The key components of the charging and discharging protection circuit have a certain proportion of short circuit failures. If the production of lithium batteries is not large, there will not be too many problems. However, the usage of lithium batteries is very large, with a shipment volume of 15.7 billion lithium batteries in China alone in 2019. With such a large shipment volume, it is not surprising that lithium battery explosions have occurred now. It is urgent to add a secondary protection in addition to the main protection circuit to prevent explosions and ensure the safety of lithium batteries. In the secondary protection scheme, the commonly used protection schemes have the following characteristics: 1. The PTC scheme has the advantages of being cheap and reusable, but the disadvantages are high impedance and slow speed,


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