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Introduction of charging method for lithium ion batteries in parallel

17 Oct 2020 - lithium ion battery lithium ion battery manufacturer parallel lithium ion battery

The purpose of parallel connection of lithium ion battery is to increase capacity. Therefore, parallel connection of lithium-ion batteries has different design characteristics compared with single lithium-ion batteries, which is mainly reflected in the consistency between charging current design and parallel connection of batteries.
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When lithium-ion batteries are charged in parallel, each lithium-ion battery should be charged in a balanced manner, otherwise the performance and life of the whole group of lithium-ion batteries will be affected during use. Common balanced charging technologies include: constant shunt resistance balanced charging, on-off shunt resistance balanced charging, average battery voltage balanced charging, switching capacitance balanced charging, step-down converter balanced charging, inductance balanced charging, etc.

Introduction of parallel charging method for lithium ion batteries
The purpose of parallel connection of lithium-ion batteries is to increase capacity. Therefore, parallel connection of lithium-ion batteries has different design characteristics compared with single lithium-ion batteries, which is mainly reflected in the consistency between charging current design and parallel connection of batteries.

When lithium-ion batteries are charged in parallel, each lithium-ion battery should be charged in a balanced manner, otherwise the performance and life of the whole group of lithium-ion batteries will be affected during use. Common balanced charging technologies include: constant shunt resistance balanced charging, on-off shunt resistance balanced charging, average battery voltage balanced charging, switching capacitance balanced charging, step-down converter balanced charging, inductance balanced charging, etc.

Several issues should be noted in parallel charging of lithium ion batteries:
1. Lithium ion batteries with and without protection plates cannot be charged in parallel. Batteries without protection plates can easily be damaged by overcharging.
2. For batteries charged in parallel, the built-in protection plate of the battery should be removed and one battery protection plate should be used uniformly.
3. If there is no lithium ion battery protection plate for the batteries charged in parallel, the charging voltage must be limited at 4.2V and the charger of 5V cannot be used.

After there will be a charge in lithium ion batteries in parallel protection chip for lithium ion battery charging protection, lithium ion battery manufacturer to make parallel lithium ion battery has been fully consider the change characteristics of lithium ion batteries in parallel after, is carried out in accordance with the above requirement of current design and choice of batteries, so the user according to parallel lithium ion battery charging instructions step by step, to prevent incorrect charge the possible damage to the battery.
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