Hybrid electric vehicle battery thermal management system and hybrid electric vehicle

Abstract

The invention relates to the technical field of hybrid vehicles, and particularly discloses a battery thermal management system of a hybrid vehicle. The system comprises a refrigerant circulation loop, a battery pack natural cooling loop, a battery pack forced cooling loop, a battery pack direct heating loop and a battery pack indirect heating loop; the working states of a plurality of three-way electronic water valves, an electronic water pump, an electric compressor, an electromagnetic expansion valve and other components are controlled through a controller, and the heating and cooling requirements of a battery pack are met. Therefore, the battery pack natural cooling loop, the battery pack forced cooler loop, the battery pack direct heating loop and the battery pack indirect heating loop are switched and matched, so the problem that the battery pack is overheated and overcooled can be effectively, quickly and energy-saving solved, the battery pack can normally work under any workingcondition, and a hybrid vehicle can obtain the environmental adaptability comparable to that of a traditional fuel vehicle.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, and in particular relates to a battery thermal system of a hybrid electric vehicle. Background technique [0002] In order to improve the energy utilization rate, transform the energy utilization system, and realize electrification, new energy and clean transportation, it is the trend and direction of the development of urban public transportation and private transportation. There are technical bottlenecks in electric vehicles at the present stage, and electric vehicle users are faced with the problems of charging anxiety and mileage anxiety. Compared with pure electric vehicle solutions, hybrid vehicles are a very effective way to realize clean transportation and solve the anxiety of electric vehicle users at this stage. Advantageous new energy vehicle solutions. The core of the hybrid technology is to complement each other through the motor and the engine, learn from each othe...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned shortcomings of the prior art and provide hybrid vehicles with environmental adaptability comparable to traditional fuel vehicles, the purpose of the present invention is to provide a hybrid vehicle battery thermal management system solution to solve the problem of most current hybrid vehicle batteries. The thermal management system has low preheating efficiency, long preheating time in cold areas, frequent use problems, etc.

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