Battery and motor integrated thermal management system of pure electric or hybrid electric vehicle

Abstract

The invention relates to a battery and motor integrated thermal management system of a pure electric or hybrid electric vehicle, and belongs to the technical field of thermal management systems of vehicles. The battery and motor integrated thermal management system comprises a liquid storage tank, a first reversing valve, a second reversing valve, a third reversing valve, a pump, a cooling mechanism, a throttle valve, an automobile motor liquid cooling mechanism and an automobile battery liquid cooling mechanism. The working medium in the system is perfluorohexanone with the boiling point of 53 DEG C; the first reversing valve is a two-position six-way electromagnetic reversing valve and is provided with a left oil duct and a right oil duct; and the second reversing valve and the third reversing valve are two-position three-way electromagnetic reversing valves and are each provided with a left oil channel and a right oil channel. The system is simple in structure and reasonable in design; the heat of a motor heat management system can be effectively utilized at low temperature, so that the battery heating cost is saved; and when the temperature is high, the temperature rise of thebattery is effectively controlled and the battery is prevented from being overheated through the phase change of the phase change material. The system is suitable for pure electric vehicles and hybridelectric vehicles.

Description

technical field [0001] The invention belongs to the technical field of thermal management systems for automobiles, and in particular relates to a motor battery integrated thermal management system based on phase change materials applied to pure electric or hybrid electric vehicles. Background technique [0002] In a low temperature environment, too low temperature will affect the battery discharge performance, which may lead to insufficient power output of the electric vehicle; in a normal temperature environment, the battery pack will frequently perform charging and discharging activities during the driving of the electric vehicle, and the battery will continue to generate heat during this process , leading to a rise in battery temperature and affecting the working efficiency of the battery; in a high-temperature environment, if the battery cannot dissipate heat in a timely and effective manner, the battery may be in danger of thermal runaway. Therefore, in order to improve...

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Problems solved by technology

However, most of these research results are thermal management systems designed with solid-liquid phase change materials, and have not comprehensively considered the waste heat of the motor and liquid-gas phase change materials to optimize the design of the electric vehicle motor battery thermal management system.

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