Battery thermal management device

Abstract

The invention provides a battery thermal management device, which comprises a liquid storage tank, a pump body, a heating refrigerator, a plurality of battery modules, a pipeline and a battery management module. Each battery module includes a heat exchange plate in communication with a pipe, a plurality of side-by-side individual cells abutting on a side surface of the heat exchange plate, and a heat conductive fin abutting on a surface of each individual cell and abutting on the heat exchange plate. The heat conducting medium in the liquid storage tank is pressurized under the action of the pump body and flows through the heating refrigerator, the heat exchange plate and finally returns to the liquid storage tank through the pipeline in turn. The battery management module comprises a plurality of temperature sensors and a control module electrically connected with the pump body, the heating refrigerator and the temperature sensor respectively. The control module receives and controlswhether the pump body is started and whether the heating refrigerator is heated or cooled by the heating refrigerator according to the information collected by the temperature sensor. The battery thermal management device provided by the invention is relatively simple in structure, safe and reliable in use and good in uniform temperature effect.

Description

【Technical field】 [0001] The invention relates to the field of power batteries, in particular to a battery thermal management device. 【Background technique】 [0002] With the advancement of new energy technology and the improvement of lithium battery technology, lithium batteries are more and more used in daily life, especially in the field of electric vehicles. The power battery will generate a lot of heat during the high-power charging and discharging process, which will increase the temperature of the power battery. If the cooling effect is not good, it will affect the battery capacity of the power battery and affect the charging and discharging efficiency of the power battery; if it is serious, it will damage the battery. The internal structure even makes the power battery spontaneously ignite. At present, there are usually two types of cooling for power batteries: air cooling and liquid cooling: air cooling has a simple structure and is easy to install, but the heat di...

AI Technical Summary

Problems solved by technology

At present, the heating and cooling of lithium batteries usually belong to different systems, which makes the structure of lithium batteries more complex and affects the energy density of lithium batteries

[0004] In addition, the existing liquid-cooled cooling plate is usually only in contact with one side of the battery module, resulting in uneven heating and cooling of the single battery, destroying the consistency of the single battery, and shortening the life of the battery module.

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