battery pack

Abstract

The invention provides a battery pack, comprising: a plurality of single batteries arranged in sequence along the arrangement direction; a box body with an open upper side and a storage space for accommodating a plurality of single batteries; Between two adjacent single batteries, each heat dissipation plate has a heat dissipation channel extending along the width direction inside, and each heat dissipation plate penetrates the two side walls of the box body along the width direction so that the heat dissipation channel communicates with the outside of the box body. In the battery pack according to the present invention, a plurality of single cells are directly arranged in the box without first assembling a plurality of single cells into a battery module, which simplifies the assembly process of the battery pack and reduces the cost of production; the cooling plate It is arranged between two adjacent single cells, which can not only avoid the mutual extrusion of each single cell when it heats up and expand, but also avoid the mutual transfer of heat, and improve the service life of the single cells; The large surface contact of the bulk battery effectively improves the heat dissipation efficiency.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery pack. Background technique [0002] The conventional battery pack structure and assembly process are as follows: refer to figure 1 , with the two side plates and two end plates, the large surfaces of the single battery 1 are attached to each other, and the single battery is fixed into a battery module by welding the side plates and end plates; the battery module is placed in the box body 2 as a whole , using the heat conduction between the box body 2 and the bottom surface of the single battery 1, the heat from the bottom diffuses to the side wall of the box body 2; a heat dissipation air duct is designed on the side wall of the box body 2 to ventilate and dissipate the air duct. [0003] In the prior art, the single battery 1 needs to cooperate with the end plate, side plate, etc., and is first welded into a group on a special special jig, and then the battery module is moved...

AI Technical Summary

Problems solved by technology

Silicone sheet is pasted on the bottom, and the heat dissipation area is limited; while the potting process on the side wall is quite complicated, the potting volume is difficult to control, the filling is uneven, the hardening time is long, and it is difficult to repair

[0008] Under harsh conditions, the single cells 1 will swell greatly, and there is no extra space reserved after the single cells 1 are grouped, and they are all in a state of being attached to each other, causing mutual extrusion between the single cells 1, which affects the use life

[0009] The existing technology is limited to the die-casting of the box body 2. For the battery pack that requires lightweight, it is not applicable to use a plastic box body, because the heat cannot be conducted, and effective methods cannot be used to dissipate heat.

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