Liquid-cooled battery module

Abstract

The invention discloses a liquid-cooled battery module, comprising a cooling chamber, a battery pack and a liquid coolant, wherein the battery pack penetrates the cooling chamber, and the cooling chamber is filled with the liquid coolant. The battery pack directly contacts with the liquid coolant, so heat produced during operation of the battery pack is exchanged; circulation of the liquid coolant is realized through a liquid inlet and a liquid outlet, so heat exchanged into the liquid coolant is discharged to the outside; and thus, cooling of the battery pack is realized. Through designing of a sealant, the battery pack is better fixed in the cooling chamber and the sealing performance of the liquid-cooled battery module is improved; with a designed sealing ring, seepage of the liquid coolant can be prevented, and safety and reliability of the liquid-cooled battery module are enhanced; a busbar fixing plate is designed to fix two busbars and lead out the positive and negative electrodes of the battery pack, so a battery pack with greater power can be formed as needed through parallel and series connection manners and used for an automobile; and an upper cover plate and a lower cover plate are designed, so the battery pack is better protected, and the phenomenon of a short circuit of the liquid-cooled battery module is prevented.

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, new energy vehicles have developed extremely rapidly due to the characteristics of no pollution to the environment. The core of new energy vehicles lies in the power battery. The quality of the battery not only determines the mileage of the electric vehicle, but also affects the quality of the vehicle. During the driving process of the power battery, its service life and battery capacity attenuation are closely related to the temperature range and frequency of the battery system. [0003] The power battery will generate a lot of heat during the working process. If the heat cannot be discharged in time, the temperature inside the power battery pack will continue to rise. At least, the temperature difference between the power batteries at different positions in the power battery pack will become larger an...

AI Technical Summary

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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