A heat treatment device for a battery pack and a manufacturing method of a phase change material

Abstract

The application provides a heat treatment device for a battery pack and a manufacturing method of a phase change material, which belong to the field of lithium batteries. It includes a coolant tank; a variable frequency electric pump, which communicates with the coolant tank; a power battery mechanism, including a liquid cooling component, multiple batteries, and a phase change structure; the liquid cooling component communicates with a variable frequency electric pump for cooling the battery; multiple batteries Set in the liquid cooling module, the phase change structure wraps the battery to dissipate heat or heat up the battery; the phase change structure is made of high thermal conductivity composite phase change material, which is composed of lauric acid, expanded graphite and graphite The heat dissipation mechanism is respectively connected with the liquid cooling component and the cooling liquid tank, and can dissipate heat from the liquid flowing out of the liquid cooling component and transport it back to the cooling liquid tank. The device not only saves energy but also meets cooling requirements, so as to ensure that the battery pack works in an optimal temperature range, which can not only improve the working performance of the battery pack, but also prolong the working life of the battery pack.

Description

technical field [0001] The present application relates to the field of lithium batteries, in particular to a heat treatment device for a battery pack and a method for manufacturing a phase change material. Background technique [0002] The battery is the core component of an electric vehicle. Because the vehicle battery requires high energy density and high instantaneous output power, and the battery layout should be compact, the working environment is changeable and severe. In this process, thermal management is particularly complex. In order to ensure that the battery works in a suitable temperature range, the traditional natural cooling method is bound to fail to meet the complex operating conditions of the car. Contents of the invention [0003] One of the purposes of the present application is to provide a heat treatment device for a battery pack and a manufacturing method of a phase change material, aiming at improving the poor effect of direct natural cooling of th...

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Problems solved by technology

[0003] One of the purposes of the present application is to provide a heat treatment device for a battery pack and a manufacturing method of a phase change material, aiming at improving the poor effect of direct natural cooling of the battery in the prior art, which is not conducive to the heat dissipation of the high energy density power battery

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