Automotive Thermal Management Systems and Electric Vehicles
A thermal management system and automobile technology, applied in the field of air conditioning of electric vehicles, can solve the problems of difficult realization of vehicles, limited box space, and large power batteries, so as to improve the charging and discharging efficiency and facilitate the layout of the whole vehicle.
Active Publication Date: 2019-11-05
BYD CO LTD
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Problems solved by technology
Although the power battery cooling system can cool the power battery through the evaporator during refrigeration, the power battery and the evaporator are closely connected to exchange heat. Although it is feasible in principle, it is difficult to implement on the car because the evaporator is generally in the Inside the air-conditioning box, the space of the box is limited, and the power battery of a pure electric vehicle is very large, which is usually placed at the bottom of the vehicle
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[0051] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0052] In the present invention, unless stated otherwise, the used orientation words such as "up, down, left, right" are usually relative to the drawing direction of the drawings, and "upstream and downstream" are relative to Medium, for example, in terms of the flow direction of the refrigerant, specifically, the flow direction toward the refrigerant is downstream, and the flow direction away from the refrigerant is upstream, and "inside and outside" refer to the inside and outside of the corresponding component outline.
[0053] In addition, in the present invention, electric vehicles may include pure electric vehicles, hybrid vehicles, and fuel cell vehicles....
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The invention discloses an automobile heat managing system and an electric automobile. The automobile heat managing system comprises a heat pump air conditioning system, a battery pack heat exchanging system, a first switch valve and a first plate heat exchanger, wherein a refrigerant inlet of the first plate heat exchanger communicates with an outlet of an outdoor heat exchanger or with an inlet of an indoor steamer via a selectively connected or disconnected battery cooling branch, and communicates with an inlet of the first switch valve via a selectively connected or disconnected battery heating branch; a refrigerant outlet of the first plate heat exchanger communicates with a compressor via a selectively connected or disconnected battery cooling backflow branch and communicates with an outlet of the first switch valve via a battery heating backflow branch; and the first plate heat exchanger is serially connected to a battery cooling liquid loop of the battery pack heat exchanging system in a parallel way. Cooling liquid is cooled or heated via the refrigerant and then the battery is cooled or heated by the cooling liquid, so the battery can work in a proper temperature range all the time; and therefore, battery charging and discharging efficiency can be improved, cruising ability and service life can be enhanced.
Description
technical field [0001] The invention relates to the field of air conditioners for electric vehicles, in particular to an automobile thermal management system and an electric vehicle. Background technique [0002] To ensure the high charging and discharging efficiency of the battery of electric vehicles, it is necessary to have a suitable working temperature. Too high or low will have a great impact on its performance and battery life. The utility model whose Chinese patent publication number is CN205039220U discloses a kind of automobile power battery cooling system. Although the power battery cooling system can cool the power battery through the evaporator during refrigeration, the power battery and the evaporator are closely connected to exchange heat. Although it is feasible in principle, it is difficult to implement on the car because the evaporator is generally in the Inside the air-conditioning box, the space of the box is limited, and the power battery of a pure elec...
Claims
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IPC IPC(8): B60H1/00B60H1/03
CPCB60H1/00278B60H1/00392B60H1/034B60H2001/00307
Inventor 黄健叶梅娇陈雪峰汪孟瑛
Owner BYD CO LTD