TEC cooling test method used for heat dissipation of battery module

Abstract

The invention discloses a TEC cooling test method used for heat dissipation of a battery module. The test method comprises the following steps of a, performing line connecting and assembling of a test apparatus, enabling TEC refrigerating sheets to be attached to a middle part region of the interior of the battery module in a centralized manner, placing two electric heating sheets on the left and right side surfaces of the battery module, and enabling a data collector to be connected with a temperature collection point of the battery module through a wire; b, performing power on of the electric heating sheets to carry out a simulation heating operation on the battery module in a battery pack; c, performing a heat dissipation test on the battery module by means of simulating different thermal loads and different TEC balance cooling capacities; d, performing temperature collection on the battery module through the data collector; e, performing measurement and calculation on the heat dissipation capability of the existing battery pack battery module; and f, performing judgment on the heat dissipation capability of the battery module. By adoption of the TEC cooling test method, the temperatures of a cell, the battery module and the battery pack can be controlled accurately and effectively; the temperature gradient of the battery module in the single battery height direction is low; and the temperature uniformity on each surface of the battery module is high, the temperature field uniformity is high, and a high heat dissipation and cooling effect is achieved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation, in particular to a TEC cooling test method for heat dissipation of battery modules. Background technique [0002] In the working process of the battery pack, it is inevitable to face the charging problem of the battery. The heating of the battery during charging and discharging is an important factor affecting the cycle life and safety of the battery. A major problem in the field. [0003] In the prior art, the most commonly used heat dissipation method for battery packs is water cooling or air cooling. Water cooling can easily ensure that the battery temperature does not exceed 30 degrees, and the battery temperature difference is within 5 degrees, and the air cooling temperature difference is likely to exceed 10 degrees. If the temperature is above 100°C, the high temperature of the battery can only be as close as possible to the ambient air temperature; however, these two cooling met...

AI Technical Summary

Problems solved by technology

However, TEC is not widely used in the field of battery heat dissipation, and its heat dissipation effect in battery packs is not very clear.