Battery thermal management system based on heat pipe and liquid cooling device

Abstract

The invention discloses a battery thermal management system based on a heat pipe and a liquid cooling device. The battery thermal management system comprises a battery module, a cooling device and a control device, wherein the control device and the cooling device are communicated with each other through an electric signal, the cooling device is installed outside the battery module, the control device is electrically connected with the battery module, the cooling device comprises a heat pipe and a liquid cooling plate, the heat pipe and the liquid cooling plate are both mounted outside the battery module, the control device comprises an electric control device and a flow control device, the electric control device is electrically connected with the flow control device and the battery module, and the flow control device is communicated with the heat pipe and the liquid cooling plate through pipelines. According to the invention, the problem that temperature difference is prone to occurring due to uneven heat dissipation of the liquid cooling plate is solved, heat dissipation is even, and the size of the heat dissipation structure is reduced.

Description

technical field [0001] The invention relates to the field of automobile chassis safety, in particular to a battery heat management system based on a heat pipe and a liquid cooling device. Background technique [0002] With the development of new energy technology, new energy vehicles have more stringent requirements on the charging and discharging power of the battery system and the operating environment. The higher and higher charging and discharging power will cause the battery to generate heat. For local use, the test of the battery thermal management system is becoming more and more severe. [0003] However, the battery module cooling method mainly adopted by the existing thermal management system is to use a liquid cold plate to cool the battery module, mainly to arrange the liquid cold plate at the bottom and side of the module to cool the entire battery module. This cooling method mainly has the following problems: [0004] 1) If a liquid cold plate is used on the s...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the prior art uses a liquid cold plate, but when the liquid cold plate is installed on the side of the battery module, it needs to be fixed on the side, and the temperature of the cooling liquid at the inlet section of the cooling liquid is low, and the heat exchange effect is good. The temperature of the coolant in the section is high, the heat transfer effect is poor, and there is a temperature difference between the water inlet and outlet. In addition, the gap between the modules is small, and the use of a liquid cooling plate will increase the leakage point. A battery thermal management system based on heat pipes and liquid cooling devices is provided. A battery thermal management system based on a heat pipe and a liquid cooling device includes:

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