-Lithium battery discharge rate and performance requirements

Lithium battery discharge rate and performance requirements
author:enerbyte source:本站 click290 Release date: 2023-11-24 08:39:03
abstract:
At present, the maximum discharge rate seen in the market for lithium-ion batteries is 120C, and there is no limit to the minimum rate because lithium-ion battery discharge always exists. Generally, discharge rates below 1C are for low-power normal discharge, and are mostly required for sensit...

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At present, the maximum discharge rate seen in the market for lithium-ion batteries is 120C, and there is no limit to the minimum rate because lithium-ion battery discharge always exists. Generally, discharge rates below 1C are for low-power normal discharge, and are mostly required for sensitive and compact electronic wearable devices, such as 0.1C, 0.2C, 0.5C, and so on.

That is to say, the range of discharge rate for lithium-ion batteries is currently below 120C, and the required discharge rate batteries can be customized according to actual needs within the range. That is to say, there are two main types of discharge rates for lithium-ion batteries: rates ranging from 1C to 120C and low currents below 1C.

The charging and discharging rate of lithium-ion batteries determines the speed at which a certain amount of energy can be stored in the battery or released. The charging and discharging rate performance of lithium-ion batteries is directly related to the migration ability of lithium ions at the positive and negative electrodes, electrolyte, and their interfaces. All factors that affect the migration rate of lithium ions (these factors can also be equivalent to the internal resistance of the battery) will affect the charging and discharging rate performance of lithium-ion batteries.

Lithium ion batteries are applied to different products based on different rates. The high rate of lithium-ion batteries is related to ordinary rates, representing the charging and discharging capacity of lithium-ion polymer batteries. If a regular battery is charged quickly, it is easy to cause lithium evolution at the negative electrode, leading to accelerated performance degradation of lithium-ion batteries. In severe cases, it can cause internal short circuits in the battery and cause fire and explosion.

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