Battery combination for improving rate discharge performance of lithium ion batteries

Abstract

The invention relates to a solution for improving the rate discharge performance of lithium ion batteries, in particular to a battery combination for improving rate discharge performance of the lithium ion batteries. The battery combination comprises the lithium ion batteries, wherein heat-supply batteries are arranged between the lithium ion batteries, and serve as heat sources. Because the heat-supply batteries can perform high-current charge / discharge, certain heat can be generated in the high-current charge / discharge process. According to the battery combination, the heat generated by the batteries are utilized and transferred to the surfaces of the lithium ion batteries, so that the lithium ion batteries (packs) are heated, temperatures of the lithium ion batteries (packs) are increased, and the rate discharge performance of the lithium ion batteries can be improved. The battery combination has the excellent effect that the heat-supply batteries can provide certain energy while serving as the heat sources of the lithium ion batteries.

Description

technical field

[0001] The invention relates to a battery combination for improving the rate discharge performance of a lithium-ion battery. Background technique

[0002] Lithium-ion batteries have been widely used in various fields, but under high-rate discharge conditions, due to the large internal impedance of the battery, the voltage of lithium batteries drops rapidly at the initial stage of high-current discharge, which limits the performance of lithium-ion batteries under high-rate conditions. usage of. The reasons for the poor high-rate discharge performance of lithium batteries are as follows: 1. The conductivity of the electrolyte is low; 2. The diffusion resistance of lithium ions inside the electrode material is relatively high; 3. The electronic conductivity is low. Therefore, it is necessary to develop new technologies to solve the above problems. Contents of the invention

[0003] In order to solve the above problems, heating the battery before the battery ...