Liquid-cooled battery module

Abstract

The invention discloses a liquid-cooled battery module. The battery module is fixed in a heat collecting cavity main body which is made of a high thermal conductivity material; meanwhile, the heat collecting cavity main body is also filled with a cooling liquid, is in direct contact with the battery module through the cooling liquid, absorbs heat generated by the battery module when working in large area and then carries out heat exchange with the heat collecting cavity main body, and the heat is emitted to an external environment, so that cooling treatment on the battery module is achieved. In addition, a fixed structure and a convex rib structure are designed for the heat collecting cavity main body, so that the battery module can be more stably fixed in the heat collecting cavity main body and the stability of the liquid-cooled battery module is improved. A decompression valve can adjust the pressure in a heat collecting cavity at any time according to the actual condition and has an anti-explosion decompression function, and the security and the stability of the liquid-cooled battery module are greatly improved. A seal ring is capable of preventing the cooling liquid from seeping outwards; and a filling opening is capable of adding/reducing/replacing the cooling liquid at any time according to the actual requirements, so that the convenience and the operability of the liquid-cooled battery module are improved.

Description

technical field [0001] The invention relates to the field of battery modules, in particular to a liquid-cooled battery module. Background technique [0002] In recent years, due to the characteristics of no pollution to the environment, new energy vehicles have been highly valued by the government and various automobile manufacturers, and have developed rapidly. One of the key technologies of new energy vehicles is the power battery. On the one hand, the quality of the battery determines the mileage of the electric vehicle, and on the other hand, it also affects the product quality of the vehicle. During the use of the power battery, its service life and battery life The attenuation of capacity has a great relationship with the range and frequency of temperature changes of the battery system. [0003] When the power battery is working, it will generate heat. If the heat cannot be dissipated in time, the temperature of the power battery pack will continue to rise, and the te...

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Problems solved by technology

[0006] Similarly, the waterway structure of a battery water-cooled plate mentioned in the Chinese published patent document CN201510779809.3 has a technical solution of cooling the battery module through the cooling pipeline covering the surface of the battery module. The liquid is in direct contact with the battery module for heat exchange, and the cooling efficiency and effect are not very ideal, which has certain limitations.

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