A thermal management system for an electric vehicle
A thermal management system and technology for electric vehicles, applied in the field of thermal management systems for electric vehicles, can solve the problems of large heating energy consumption and low heat dissipation efficiency, etc.
Active Publication Date: 2020-10-09
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0004] The invention provides a thermal management system for electric vehicles, which solves the problems of low heat dissipation efficiency and high energy consumption for heating when cooling and heating power batteries in existing electric vehicles, can reduce energy waste, and improve the cruising range capability of power batteries , to improve the comprehensive utilization of electric vehicle energy
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[0080] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.
[0081] In view of the current electric vehicles using PTC heating for the temperature rise of the power battery, there is a problem of large energy consumption, and at the same time, the cooling efficiency of the power battery is not high by using air cooling or liquid cooling. The invention provides a heat management system for an electric vehicle, which exchanges heat between the refrigerant in the heat pump air conditioner and the circulating fluid through a cooling exchanger, so that the circulating fluid cools the power battery, and uses the waste heat circulation device to transfer the heat generated by the motor inverter The heat is used to heat the power battery, which solves the problems of low heat diss...
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The invention provides an electric automobile thermal management system. The system comprises a control unit, a heat pump air conditioning device, a waste heat circulating device and a cooling exchanger. The cooling exchanger exchanges heat with the heat pump air conditioning device through a first loop, and the cooling exchanger exchanges heat with a power battery through a second loop; the cooling exchanger is used for heat exchange of a refrigerant running in the first loop and circulating liquid running in the second loop so as to refrigerating the power battery. The waste heat circulatingdevice exchanges heat with the power battery through a third loop, so that heat generated when a motor inverter operates is used for heating the power battery. The control unit is used for controlling the first loop, the second loop and / or the third loop to be connected or disconnected according to the temperature of the power battery. According to the system, energy waste can be reduced, the cruising mileage of the power battery is improved, and comprehensive utilization of the energy of an electric automobile is improved.
Description
technical field [0001] The invention relates to the technical field of automobile air conditioners, in particular to an electric vehicle thermal management system. Background technique [0002] Because electric vehicles are powered by power batteries, there is no waste heat generated by the engine. Electric heaters are generally used for auxiliary heating in winter. However, electric heaters have low heating efficiency and large energy waste, which seriously affects the cruising range of electric vehicles. Heat pump air conditioners have good cooling and heating performance and are the best alternative to electric heating assisted air conditioning systems. However, there are still many difficulties to be solved in the application of heat pump air conditioning system to electric vehicles. First, the operating efficiency of the heat pump air-conditioning system is low in low temperature conditions, and the heating performance needs to be improved; second, the heat pump bidire...
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IPC IPC(8): B60L58/26B60L58/27B60H1/00
CPCB60H1/00278B60H1/00392B60H2001/00307B60L58/26B60L58/27Y02B30/52Y02T10/70Y02T10/72
Inventor 孙强杜士云陈昌瑞郭艳马腾飞邰小艳
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD