Heat-conducting device and battery module

Abstract

The invention provides a heat-conducting device and a battery module. The heat-conducting device comprises a first heat dissipation plate and a heat-conducting plate, wherein the heat-conducting plate comprises a first heat-conducting part, a second heat-conducting part and a third heat-conducting part; the first heat-conducting part and the second heat-conducting part are connected through the third heat-conducting part; the third heat-conducting part is arranged between the side surfaces of two adjacent batteries in the battery module; the first heat-conducting part is arranged on the upper end surface of the battery module; the second heat-conducting part is arranged on the lower end surface of the battery module; the first heat dissipation plate is arranged on the upper end surface of the battery module and is in contact with the first heat-conducting part; the first heat dissipation plate is connected with two end plates respectively; the heat-conducting plate is used for transmitting heat generated by the battery module to the first heat dissipation plate; and the first heat dissipation plate is used for releasing the heat, so that cooling of the battery module is achieved. The heat-conducting plate in the heat-conducting device is relatively small in size, simple in structure and relatively low in cost, so that the volumetric power density of the battery module is improved; and furthermore, the structure of the battery module is simple and the cost is reduced.

Description

technical field [0001] The invention relates to mechanical technology, in particular to a heat conduction device and a battery module. Background technique [0002] As countries around the world pay more attention to environmental protection, lithium-ion batteries are used more and more widely. For example, in an electric vehicle, multiple lithium-ion batteries can be assembled to form a battery module set on the electric vehicle to meet the power demand of the electric vehicle. Lithium-ion batteries will generate a lot of heat during the working process. If the heat is not dealt with, the life of the battery module composed of lithium-ion batteries will be reduced, and at the same time, there will be safety hazards. Therefore, how to conduct heat conduction to the battery module composed of lithium-ion batteries is very important. [0003] At present, the heat conduction of the battery module is mainly carried out by means of liquid cooling. A plurality of liquid cooling...

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Problems solved by technology

[0004] However, in the above method, due to the complex structure of the liquid cold plate, the liquid cold plate is arranged between every two adjacent lithium ion batteries in the battery module, which will lead to a large volume of the battery module, and then lead to a large battery module. The volume power density of the battery pack is reduced, and it will lead to a complex structure and high cost of the battery module

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