Electric vehicle heat management system and method

A thermal management system and electric vehicle technology, applied in the field of thermal management systems of new energy vehicles, can solve problems such as the inability to fully utilize the heat of vehicle heating components, reduce the reliability of the vehicle thermal management system, and fail to meet the requirements of reducing energy consumption. Fewer parts, simple structure, and improved capacity utilization

CN110356195AInactive Publication Date: 2019-10-22YIBIN COWIN AUTO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-10-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an electric vehicle heat management system and method. The electric vehicle heat management system comprises an electric drive assembly cooling loop, an air conditioning loop and a battery cooling and heating loop, wherein the battery cooling and heating loop communicates with the electric drive assembly cooling loop through a valve; and the battery cooling and heating loopcommunicates with the air conditioning loop through a heat exchanger. The electric vehicle heat management system has the advantages that the electric drive assembly cooling loop, the air conditioning loop and the battery cooling and heating loop of a vehicle system communicate with each other; and according to an actual vehicle state, the electric drive assembly cooling loop is controlled to radiate heat of a battery loop by using a low temperature heat radiator or to heat a battery at a low temperature by using heating after heat of an electric drive assembly; and therefore, the capacity utilization ratio is increased, and energy waste is reduced.
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Description

technical field

[0001] The invention relates to the field of new energy vehicles, in particular to a thermal management system and method for new energy vehicles. Background technique

[0002] With the increasing emphasis on environmental issues around the world, pure electric vehicles have been widely favored by all walks of life, and the development of electric vehicles is largely influenced by battery thermal management systems, electric drive assembly thermal management systems, and air-conditioning thermal management systems. Constraints on the technological maturity of the three major systems. An excellent vehicle thermal management system has a very significant contribution to reducing battery energy consumption, increasing cruising range, and improving vehicle reliability and comfort.

[0003] At present, the existing electric vehicle thermal management system has independent circuits, which cannot make full use of the heat generated by the vehicle's heating compone...

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Embodiment Construction

[0026] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0027] The present invention provides a pure electric vehicle thermal management system with high efficiency, energy saving and relatively simple structure, which can not only meet the cooling requirements of various parts of the vehicle under different working conditions, but also use the waste heat of the electric drive assembly to heat and keep the battery pack warm . The specific technical scheme is as follows.

[0028] The electric vehicle thermal management system includes the electric drive assembly cooling circuit, the air conditioning circuit, and the battery cooling and heating circuit. The battery cooling and heating circuit is connected to the electric drive assembly cooling circuit through a valve, which is used to control the battery cooling and heating circuit and the electri...