Device for controlling temperature of power batteries by using battery magic square system

Abstract

The invention provides a device for controlling the temperature of power batteries by using a battery magic square system. The device is used for controlling the temperature of power batteries, and comprises a battery magic square system which covers the surface of multiple power battery cells and is fixed to the power battery cells by a heat conducting fixture, a constant-temperature micro-channel heat pipe heat exchanger group which covers the surface of the heat conducting fixture, a temperature monitoring and controlling unit which is arranged on the top surface of the power battery cellsand is used for monitoring and controlling the temperature of the power battery cells, and a piece of cooling equipment which is connected with the constant-temperature micro-channel heat pipe heat exchanger group through a conduit and placed on the outer side away from the power battery cells and is used for receiving the heat of the battery magic square system and exchanging heat in order to dissipate heat.

Description

Technical field [0001] The invention belongs to the field of temperature control of batteries, power batteries and their corresponding equipment, and in particular relates to a device for controlling the temperature of power batteries by using a battery magic cube system. Background technique [0002] Electric vehicle battery packs will work in a relatively harsh thermal environment for a long time, which will shorten the battery life and reduce battery performance; the long-term uneven distribution of the temperature field in the battery box will cause the imbalance of the performance of each battery module and cell; The thermal monitoring and thermal management of the battery pack is of great significance to the safety of the entire vehicle. Therefore, the temperature control device or method is particularly important. [0003] The latest battery pack thermal management system requires the following 5 main functions: (1) Accurate measurement and monitoring of battery temperature...

AI Technical Summary

Problems solved by technology

The aluminum alloy heat exchanger technology is mature but the process is complicated. The ceramic production process is mainly sintering, the production cycle is too long, and it is relatively brittle.

For the above two heat exchange devices, the aluminum alloy heat exchanger is used in the temperature control of ordinary battery packs, but the temperature control effect is insufficient, and the temperature field of the battery cannot be guaranteed to be uniform.

However, ceramic heat exchangers are expensive and costly, and the traditional method still cannot guarantee the uniformity of temperature

The structure of the original design of the battery thermal management device is relatively complicated, the installation, maintenance and testing are not convenient enough, and the thermal uniformity effect is poor

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