3.2 Thermal Management Due to inconsistent internal resistance of the battery cells, there is a problem of inconsistent heat. The addition of a thermal management system can adjust the temperature difference of the entire battery pack to maintain it within a small range. Cel...

The purpose of sorting is to select cells with similar parameters. Sorting methods have been studied for many years and are mainly divided into two categories: static sorting and dynamic sorting. Static sorting involves screening characteristic parameters such as open circui...

In this way, small capacity cells are always fully charged and discharged, while large capacity cells are always using a portion of their capacity. There is always a portion of the capacity of the entire battery pack that is idle2) Life loss, similarly, the lifespan of a battery pack is determined b...

The inconsistency of lithium-ion battery parameters mainly refers to the inconsistency of capacity, internal resistance, and open circuit voltage. Inconsistent battery cells used in series can cause the following problems. 1) Capacity loss refers to the formation of individu...

Consistency issues with lithium-ion batteries Lithium ion batteries cannot be made into a single unit, so we have to organize numerous small battery cells together, work together with sincerity, and even take electric vehicles to flight. At this point, we have to face a prob...

5. Conductivity. The positive ion conductivity of solid electrolyte solutions in polymer lithium-ion batteries is low. At present, adding some preservatives to turn it into a suspected gel electrolyte solution can improve conductivity. This only improves the positive ion con...

3. Security. At present, most polymers are plastic flexible packaging rechargeable batteries, and plastic steel plastic film is used as the casing. When using organic chemical lithium-ion battery electrolyte internally, even if the liquid is very hot, it will not explode. Du...

1. The fundamental difference depends on the raw materials. It is the fundamental reason why they exhibit different and important behaviors. Polymer lithium-ion batteries refer to the application of high polymer raw materials: positive, negative, or electrolyte solutions in...

4、 Short battery life The usage time of lithium-ion batteries in electric vehicles is very short, and the reasons for this situation include: the battery is not fully charged; There is a large difference in the voltage capacity of a single string; A slight short circuit in...

3、 Insufficient charging of lithium-ion batteries During the recycling process of lithium-ion batteries for electric vehicles, charging stops before reaching the cut-off voltage of the lithium-ion battery. This situation is due to the inconsistent single string charge or ca...