Integrated comprehensive heat management system for electric automobile

Abstract

The invention relates to an integrated comprehensive heat management system for an electric automobile. The integrated comprehensive heat management system comprises a power battery pack temperature equalization loop, a power battery pack normal temperature cooling loop, a power battery pack air conditioner refrigeration circuit, a power battery pack heating loop, an occupant cabin air conditionerrefrigeration circuit, an occupant cabin heating loop and an electric drive module cooling loop; and the power battery pack normal temperature cooling circuit, the power battery pack air conditionerrefrigeration circuit, the electric drive module cooling circuit and the occupant cabin air conditioner refrigeration circuit share a radiator for heat exchange, an inlet side pipeline of the radiatoris connected with an outlet side pipeline of an electric drive module through a three-way valve, and an outlet side pipeline of the radiator is connected with the power battery pack normal temperature cooling circuit or the electric drive module cooling circuit through a first through valve. According to the integrated comprehensive heat management system, compared with the prior art, through thedesign of the integrated optimized heat management loop, a condenser of the air conditioning system is eliminated, the number of front-end module radiators is reduced, the arrangement space is saved,and the system has the advantages of cost reduction, weight reduction and energy consumption reduction.

Description

technical field [0001] The invention relates to the technical field of thermal management of electric vehicles, in particular to an integrated comprehensive thermal management system for electric vehicles. Background technique [0002] At this stage, there are some technical bottlenecks in electric vehicles, and electric vehicle users are faced with the problems of charging anxiety and range anxiety. In order to increase the cruising range of electric vehicles as much as possible, electric vehicles are required to be energy-efficient as much as possible. Designing a more energy-efficient thermal management system is one of the important means to increase the cruising range. The energy-saving effect of most of the thermal management systems of electric vehicles currently on the market is not ideal. There are still many shortcomings in the design of the air-conditioning system, the thermal management system of the power battery pack, and the cooling system of the electric driv...

AI Technical Summary

Problems solved by technology

The energy-saving effect of most of the thermal management systems of electric vehicles currently on the market is not ideal. There are still many shortcomings in the design of the air-conditioning system, the thermal management system of the power battery pack, and the cooling system of the electric drive module, resulting in high or low ambient temperatures. When the energy consumption of the thermal management system of the whole vehicle is relatively large, the cruising range of the vehicle is greatly reduced

[0003] Chinese patent CN107097664A discloses an intelligent thermal management system for electric vehicles, including power battery packs, drive motors, motor controllers, on-board chargers, DC / DC voltage converters, battery radiators, battery coolers, and motor cooling Water pumps, electric oil pumps, expansion tanks, heaters, heat exchangers, electric compressors, condensers, liquid storage and drying pots, evaporators, electronic expansion valves, warm air cores, through pipelines and in pipelines The straight-through valve, three-way valve and four-way valve are connected to each other to form multiple thermal management control loops, which have achieved certain results in reducing the energy consumption of the vehicle, but the integration of the thermal management system is not high enough. The condenser, The battery heat sink and the heat sink are arranged in the same or close position, and cannot be integrated into the same component, resulting in high cost and weight, and will also affect each other and weaken their respective cooling performance

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