New energy automobile integrated heat management unit and control method thereof

Abstract

A new energy automobile integrated heat management unit comprises an electric air conditioner compressor, an electronic water pump, an air conditioner condenser, a unit controller, a water-fluorine heat exchanger, a heat dissipation water tank, an electronic fan, a cooling component, a water inlet temperature sensor, a water outlet temperature sensor, an environment temperature sensor, an air conditioner high-pressure end pressure sensor, an air conditioner low-pressure end pressure sensor and a refrigerant dryer expansion valve assembly. The electric air conditioner compressor is sequentiallyconnected with the air conditioner high-pressure end pressure sensor, the air conditioner condenser, the refrigerant dryer expansion valve assembly, the water fluorine heat exchanger and the air conditioner low-pressure end pressure sensor. The electronic water pump is sequentially connected in series with a waterway end of the water-fluorine heat exchanger, the heat dissipation water tank, the water outlet temperature sensor, the cooling component and the water inlet temperature sensor. The problems that a multi-component cooling system is independent, low in cooling efficiency, high in costand large in dead weight are solved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a new energy vehicle integrated thermal management unit and a control method thereof, which are used for cooling systems of power motors and power batteries. Background technique [0002] As people's awareness of global warming continues to deepen, energy issues have become increasingly prominent, and energy conservation and emission reduction have become the main theme of the development of the automotive industry. The new generation of vehicle power systems represented by gasoline-electric hybrids, pure electrics, and fuel cells It has become the main model that major OEMs are vying to develop. [0003] As a key energy storage device for a new generation of vehicles, the power battery is limited by its internal chemical principles, and its charge and discharge performance and safety are greatly affected by temperature. When the temperature of the power b...

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Problems solved by technology

[0007] In order to solve the above problems, the present invention provides a new energy vehicle integrated thermal management unit and its control method. The present invention can solve many problems such as independent multi-component cooling system, low cooling efficiency, high cost, and large self-weight. The solution has the characteristics of compact structure, high integration, high cooling efficiency, and convenient vehicle layout.

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