Liquid cooling device and battery module

Abstract

The invention relates to the technical field of thermal management of batteries, in particular to a liquid cooling device and a battery module. The liquid cooling device comprises radiating plates, aliquid inlet and a liquid outlet, wherein the radiating plates are rubber plates and are separately and internally provided with a liquid flow channel; the liquid inlet and the liquid outlet are respectively communicated with the two ends of the liquid flow channels; each radiating plate is arranged between very two adjacent battery packs and is separately in contact with batteries in the two adjacent battery packs, so that the batteries between the two adjacent battery packs can be cooled in a process that cooling liquid is input through the liquid inlet, flows through the liquid flow channels and then flows out from the liquid outlet. By adopting the structure, the phenomenon that an explosion occurs under the squeezing of the adjacent liquid cooling devices when the batteries are thermally expanded can be effectively avoided.

Description

Technical field [0001] The present invention relates to the technical field of battery thermal management, in particular to a liquid cooling device and a battery module. Background technique [0002] In recent years, as the problems of energy costs and environmental pollution have become more and more prominent, pure electric vehicles and hybrid electric vehicles have attracted the attention of the government and various auto companies because of their advantages in substantially eliminating or even zero-emission vehicle exhaust. The service life and capacity decay of the battery in the battery module are closely related to the temperature difference and the temperature increase range of the battery module. The battery module generates a lot of heat when it is working. If the heat cannot be discharged in time, the temperature in the battery module will continue to rise, causing the temperature difference inside to gradually increase, and eventually the battery will be in a large ...

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Problems solved by technology

[0003] The inventors have found through research that in the prior art, the thickness of the liquid cooling device is relatively thick to allow enough cooling liquid to flow through to dissipate heat from adjacent batteries. When the liquid cooling device is installed in the battery module At the same time, the distance between the battery packs in the battery module usually matches the thickness of the liquid cooling device, so that the liquid cooling device fits the batteries in each battery pack, but the battery usually expands when it is heated. There may be an explosion under the extrusion of the adjacent liquid cooling device

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