An air-cooled and liquid-cooled integrated battery module

Abstract

The invention provides an air-cooled and liquid-cooled integrated battery module. It includes a battery pack, a cooling device, and a circulating water pump. The cooling device is arranged on one side of the battery module for cooling the battery pack; the circulating water pump is installed on the side of the battery pack and is used to form a water circulation loop for heat dissipation. The battery module provided by the present invention better guarantees the temperature consistency of each battery of the module under complex working conditions through the liquid circulation design. At the same time, X-shaped cooling fins are combined to form a mesh structure, which ensures that under the condition of forced air convection, the air has a lot of area to exchange heat with the cooling fins and take away more heat. The integrated integrated design makes its heat dissipation system independent, and each module forms a heat dissipation system. In the battery pack application, because only the power line is connected between the modules, and there is nothing else, the failure rate is greatly reduced. In addition, the maintenance It is also very convenient, just replace the faulty module directly, without changing other devices in the battery pack.

Description

technical field [0001] The invention relates to a battery module, in particular to a battery module integrating air cooling and liquid cooling. Background technique [0002] Under the current background of the development of new energy vehicles, most battery packs use air cooling and liquid cooling for heat dissipation, and the two heat dissipation methods are more common. [0003] Air-cooled heat dissipation is that air is used as the heat transfer medium, and the air is directly passed through the module to achieve the purpose of cooling and heating. Forced air cooling is to take away the heat of the battery through the exhaust fan through the wind generated by the movement. The structure is simple and the maintenance is simple and convenient. However, the disadvantages and deficiencies of air cooling are: poor heat dissipation effect, high requirements for air duct design and structural arrangement, and difficulty in ensuring module temperature consistency, especially fo...

AI Technical Summary

Problems solved by technology

However, the disadvantages and deficiencies of air cooling are: poor heat dissipation effect, high requirements for air duct design and structural arrangement, and difficulty in ensuring module temperature consistency, especially for batteries near the air outlet, heat will accumulate, although maintenance Simple, but not ideal cooling effect

However, the disadvantages and deficiencies of liquid cooling are: ideal heat dissipation effect, complex waterway design, especially the intricate waterway connection between modules in the battery box, and different fixing methods for different modules in the battery box. If the system is running at a lower level, the waterway connection between the modules has a large span, and the probability of liquid leakage also increases at the same time.

If some parts of the heat dissipation system are damaged during long-term use, the overall heat dissipation system needs to be disassembled, which is extremely inconvenient for maintenance

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