Battery pack

Abstract

The invention discloses a battery pack, which comprises a soft pack battery module and a cooling assembly, wherein the soft pack battery module comprises at least two rows of battery mold stacks whichare sequentially arranged in the front-back direction, and a heat conduction groove is formed between every two adjacent battery mold stacks in the front-back direction; the cooling assembly comprises a first part and a second part; the first part covers the top surfaces of the plurality of battery mold stacks, the second part is adaptively arranged in the corresponding heat conduction grooves, the heat conduction grooves are filled with heat conduction glue, the heat conduction glue fixes the relative positions of the cooling assembly and the battery mold stacks, heat of the battery mold stacks is transferred to the cooling assembly, and the battery mold stacks are cooled through the cooling assembly. The battery pack disclosed by the embodiment of the invention is simple in cooling mode, good in cooling effect and high in cooling efficiency, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of battery pack liquid cooling, in particular to a battery pack. Background technique [0002] At present, liquid-cooled battery modules are widely used, and many environmental protection industries, including new energy vehicles, use liquid-cooled battery modules to provide power. Therefore, the performance of the liquid-cooled battery module directly determines the performance of the equipment using the liquid-cooled battery module as a power source. [0003] The design of the battery pack liquid cooling system is very difficult. Heat pipes are often used to contact the battery pack. One liquid cooling plate contacts one cell or two cells share a heat pipe. The heat pipe is used to conduct the heat of the cell from the thickness direction of the cell. In this way, the heat conduction efficiency is low, the weight is increased, the more the number of batteries is, the more the number of heat pipes is, and ...

AI Technical Summary

Problems solved by technology

[0003] The design of the battery pack liquid cooling system is very difficult. Heat pipes are often used to contact the battery pack. One liquid cooling plate contacts one cell or two cells share a heat pipe. The heat pipe is used to conduct the heat of the cell from the thickness direction of the cell. In this way, the heat conduction efficiency is low, the weight is increased, the number of batteries is more, the number of heat pipes is more, and the assembly is also complicated

In addition, due to the continuous reduction in the height of the battery pack, traditional battery packs are often assembled vertically, so the height of the module is often high, but due to the requirements of the manufacturing process and cost of the battery pack, the height cannot be reduced, which cannot meet the requirements of the battery system. Height Reduction Requirements

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