Air cooling structure and battery pack

Abstract

The invention discloses an air cooling structure and a battery pack, and the air cooling structure comprises a lower box body which is provided with an air inlet and an air outlet; the air duct cover plate is fixed at the bottom of the box body, and an air inlet duct and an air outlet duct which are independent from each other are formed between the air duct cover plate and the lower box body; the air inlet duct is communicated with the air inlet, and the air outlet duct is communicated with the air outlet; a module air inlet communicated with the air inlet duct and a module air outlet communicated with the air outlet duct are formed in the air duct cover plate; and air flow in the air inlet duct flows out through the module air inlet and then flows back to the air outlet duct through the module air outlet. By means of the design, partition cooling of the battery cells in the battery pack can be achieved, the cooling efficiency is improved, and the battery cell cooling requirement under high power is met; meanwhile, the air duct cover plate is integrated at the bottom of the lower box body, so that the occupied space in the lower box body can be reduced, and the energy density of the whole bag can be improved. In addition, different air channel flow directions can be formed according to cooling requirements of different positions, and distributed accurate heat control is carried out.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an air-cooled structure and a battery pack. Background technique [0002] At present, with the increase of the battery mileage, the power of the battery increases, and the excessive heat accumulated in the battery pack during operation seriously affects the life of the battery pack. The battery pack needs to be designed with a cooling system to reduce the temperature of the battery pack. The cooling methods are mainly liquid cooling, direct cooling, immersion and air cooling, among which the cost of liquid cooling, direct cooling and immersion cooling is high. At present, low-cost air cooling channels designed in battery packs are generally used. [0003] However, the cooling effect of the sub-cooling channel in the existing battery pack on the battery cells is average, which can only meet the cooling needs of low-power batteries, and occupies a large space in the battery...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor cooling effect and large space occupied by the air-cooled structure in the battery pack in the prior art, thereby providing an air-cooled structure and a battery pack

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