Battery module with water-cooling heat dissipation for tabs

Abstract

The invention provides a battery module with water-cooling heat dissipation for tabs. The battery module comprises a plurality of battery module units, wherein each battery module unit comprises a battery core group consisting of a plurality of battery cores, a front end plate arranged at the front side of the battery core group, a left side plate and a right side plate respectively arranged at the left side and right side of the battery core group, a rear end plate arranged at the rear side of the battery core group, a bracket arranged above the battery core group, and heat-dissipating fins and a water-cooling plate close to the bracket, wherein the bracket is provided with tabs which are arranged at the left side and right side of the bracket; the water-cooling plate is provided with a water feeding pipe, a water discharging pipe and a water-cooling pipeline, and the water-cooling pipeline is wholly U-shaped; the front end plate is provided with a water feeding pipeline, a water discharging pipeline, a positioning pin and a positioning groove, and a vertical water inlet connected with the water feeding pipe is formed in the water feeding pipe and above the front end plate; and a vertical water outlet connected with the water discharging pipe is formed in the water discharging pipe and above the front end plate. Different battery module units are connected and fixed by the positioning pin and the positioning groove. The battery module provided by the invention has the advantages that the heat-dissipating fins and the water-cooling plate are arranged above the tabs generating maximum heat, and the front end plate is provided with the water feeding pipeline and the water discharging pipeline communicated with the water-cooling plate, so that the heat-dissipation efficiency is high, the assembly is simple and the appearance is clean and tidy.

Description

technical field [0001] The invention relates to the technical field of water cooling and heat dissipation of battery modules, in particular to a battery module with tabs for water cooling and heat dissipation. Background technique [0002] At present, due to the needs of environmental protection, pure electric vehicles, plug-in hybrid vehicles, pure electric buses and plug-in hybrid buses are equipped with high-energy, high-power lithium battery modules. During the charging and discharging process of the battery module of the car, due to the rapid heating of the battery, the temperature difference between the cells will become larger, especially the temperature of the tab part is the highest. If the cooling scheme of the battery module is not good, it will not be able to quickly and efficiently dissipate the internal heat of the battery cell. [0003] In order to control the battery module within a reasonable temperature range to ensure the normal working performance of the...

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Problems solved by technology

[0005] In order to solve the technical problems of poor water cooling and heat dissipation of existing battery modules, high material costs, low production efficiency, exposed water pipes, and large space occupation, the present invention provides a battery module with tab water cooling and heat dissipation. A heat sink and a water-cooling plate are arranged above the tab with the most heat, and a water inlet pipe and an outlet pipe connected to the water-cooling plate are arranged on the front plate, which has high heat dissipation efficiency, simple assembly, and a neat appearance

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