Heat management system of battery pack

Abstract

The invention discloses a heat management system of a battery pack. The heat management system comprises the battery pack, a plurality of thermoelectric cooling assemblies, a heat conducting device, a cooling device and a battery management system, wherein the battery pack comprises a battery box and batteries; the thermoelectric cooling assemblies are arranged on the battery box; the heat conducting device is stuck on the thermoelectric cooling assemblies; the cooling device and the heat conducting device are arranged oppositely at interval; the battery management system is electrically connected to the thermoelectric cooling assemblies and the cooling device; the battery management system is used for automatically controlling the thermoelectric cooling assemblies and the cooling device. Compared with the prior art, the heat management system of the battery pack, disclosed by the invention, has the beneficial effects that the refrigeration effect of the thermoelectric cooling assemblies is rapid and the problem that the temperature rising of the battery pack is too high is solved; refrigeration and heating of the thermoelectric cooling assemblies are automatically controlled through the battery management system and a constant-temprature effect on the battery pack is extremely good; the consistency of the battery is effectively improved, and furthermore, the performance and service life, and SOC (State of Charge) capacity retention rate of the battery pack are improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of electric vehicles, in particular to a heat management system for a battery pack. [0003] 【Background technique】 [0004] The battery pack is one of the core components of many electric transportation devices. In order to reduce the volume, the inside of the battery pack is mostly closely arranged and connected. The battery generates a lot of heat when it is discharged, and the accumulation of time and space will cause uneven heat accumulation, resulting in complex and changeable operating environment temperature of the battery pack. Due to the dense placement of the heat-generating battery bodies, there must be more heat accumulation in the middle area and less in the edge area, which increases the temperature imbalance between the individual cells in the battery pack and aggravates the internal resistance and capacity of each battery pack and individual cells. Inconsistency. If it accumulates ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a thermal management system for a battery pack, which solves the problem of excessive temperature rise of the battery pack, and at the same time can automatically adjust and control the working temperature of the battery pack, so that the temperature of the battery pack is always maintained within the optimum working temperature range. Thereby improving the consistency of the single battery, thereby effectively improving the performance and life of the battery pack, as well as the SOC capacity retention rate

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