Heat dissipation module for battery thermal management

Abstract

The invention discloses a heat dissipation module for battery thermal management. The heat dissipation module comprises a top cover plate, a cooling plate and an outlet pipeline. The top cover plate is provided with two fluid passages. The top cover plate and the outlet pipe are respectively located at the upper and lower ends of the cooling plate. The cooling plate is intenrally provided with a fractal microchannel. The inlet of the fractal microchannel is connected with a fluid pipeline flowing through the pole lug, and the outlet of the fractal microchannel is connected with the outlet pipeline. The cooling plate and lithium iron phosphate battery cells are alternately distributed, and the two sides of each lithium iron phosphate battery cell are attached to the cooling plate. The temperature of the battery module can be accurately controlled, the temperature of the battery module is controlled within a safe range and the temperature distribution is uniform; and the heat dissipationmodule has a compact structure and is beneficial to realize the weight reduction of the whole vehicle.

Description

technical field [0001] The invention relates to the field of water cooling and heat dissipation of battery packs, in particular to a heat dissipation module used for battery heat management. Background technique [0002] As a key component of electric vehicles, batteries play a vital role in the performance of electric vehicles, and battery technology has become a key factor in determining the development of electric vehicles. Although lithium iron phosphate batteries have many advantages, lithium iron phosphate batteries will generate a lot of heat during discharge and charging. It will cause the temperature of the battery to rise. When the electric vehicle speeds up, the on-board power battery pack works at a high current, and when it is discharged at a large rate, the heat generated by the battery will increase significantly. If the heat is not effectively exported to the battery pack, the heat in the battery pack will accumulate. This will affect the working performanc...

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Problems solved by technology

[0004] At present, electric vehicles can use liquid cooling technology to dissipate heat from the battery pack. Although there are more and more forms of liquid cooling, with the development of the microelectronics industry, it is difficult to use liquid cooling technology in the form of ordinary pipes (for example, Chinese patent CN208690448U). Meet the requirements of precise temperature control of the battery pack, and the cooling pipe itself is too simple and the rough structural design also objectively restricts the further reduction of the weight and volume of the battery pack

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