Battery thermal management device for phase change material coupled semiconductor refrigeration chip

Abstract

The invention discloses a battery thermal management device for a phase change material coupled semiconductor refrigeration chip. The device comprises a phase change material package body, a heat insulation layer, a temperature measuring element, a semiconductor refrigeration chip and a heat sink. The phase change material package body is used for fixing a battery cell and packaging a phase changematerial. The heat insulation layer contacts the phase change material package body, and used to isolate the temperature in the heat insulation layer from the ambient temperature and fix the semiconductor refrigeration chip. The temperature measuring element is arranged between the contact surfaces of the phase change material package body and batteries, and used to measure the temperature of a battery pack. The semiconductor refrigeration chip is used for refrigeration or heating, and is arranged in the opening of the heat insulation layer. One side contacts the phase change material packagebody, and the other side contacts the heat sink. The heat sink is used to accelerate the rate of heat exchange with the outside world during the operation of the semiconductor refrigeration chip to improve the operation effect of the semiconductor refrigeration chip. The device provided by the invention has a simple and compact structure, can realize heat dissipation and heating of the battery pack, and is widely applicable to the technical field of battery thermal management.

Description

technical field [0001] The invention relates to the technical field of battery heat management, in particular to a battery heat management device using a semiconductor refrigeration technology coupled with a phase change material. Background technique [0002] As one of the power sources of new energy vehicles, the power battery directly affects the power performance of the vehicle, and the temperature is an important factor affecting the performance of the battery pack. Excessive temperature may cause the battery to escape gas or corrode, and even cause thermal runaway in severe cases, causing the electrolyte to decompose and causing the battery to explode due to excessive pressure. If the temperature is too low, the battery capacity will decrease and the charging and discharging efficiency will decrease. Therefore, using the battery thermal management system to maintain the temperature of the battery pack within a suitable operating temperature range is of great significa...

AI Technical Summary

Problems solved by technology

Among them, the temperature control effect of air cooling is not ideal, and liquid cooling will add a lot of extra volume and quality and there is a risk of leakage. Because of its structure, heat pipes are not easy to combine with batteries, so they are often used in conjunction with other methods.

Semiconductor refrigeration chips can flexibly switch cooling and heating working states, but the efficiency is low

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