Battery pack housing with heat exchange function and battery pack

Abstract

The invention provides a battery pack housing with heat exchange function and a battery pack, and belongs to the technical field of batteries. The battery pack housing comprises a heat exchange substrate and multiple side plates which are fixed on the heat exchange substrate, wherein the heat exchange substrate and multiple side plates are basically enclosed in order to form a cavity for accommodating and fixing one or more battery modules; the heat exchange substrate is formed by assembling one or several heat exchange substrate units, and each heat exchange substrate unit has an integral structure and multiple first channels are arranged therein; each side plate has an integral structure and at least one second channel is arranged therein; side plates and one or several heat exchange substrate units of the heat exchange substrate are welded, so that the first channels and multiple second channels are used together for forming heat exchange circulating channels, wherein liquid inlets and liquid outlets of the heat exchange circulating channels are arranged on at least one side plate which is provided with the second channels. The battery pack housing has the advantages of good utilization rate of materials, low cost, good extendability, and good reliability.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a battery pack casing with a heat exchange function and a battery pack using the battery pack casing. Background technique [0002] At present, in the application of battery packs (also known as "battery power systems"), especially in the field of new energy electric vehicles, battery packs are required to have high specific energy, high safety factor and long service life; The battery pack with high energy density will generate a certain amount of heat during operation. If the heat cannot be taken away in time, it will cause great harm to the life and safety performance of the battery pack. Therefore, thermal management of the battery pack is required. For example, it is necessary to design a battery pack that ensures that the battery is maintained at an appropriate temperature and is light in weight, so as to meet the requirements of high energy density and lightweight of the e...

AI Technical Summary

Problems solved by technology

In the traditional battery pack with battery liquid cooling system, its structure and its shortcomings are mainly manifested in the following aspects: (1) The cooling plate or cooling pipe and the shell structure are designed separately, and then assembled to form a battery pack, the material Low utilization rate and high processing cost; (2) Cooling pipes are designed separately, and they are connected to the heat exchange substrate through joints, which increases the risk of coolant leakage, increases manufacturing costs, and has certain requirements for installation space; (3) When the structure of the battery module or battery pack in the battery pack changes (for example, if the size of the battery pack changes only in the length and width directions), the battery pack shell needs to be redesigned and re-molded, and the processing cost is high. less portable

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