Fuel cell vehicle thermal management system

Abstract

The invention discloses a fuel cell vehicle thermal management system, which is characterized in that it includes a power electronic cooling system, a fuel cell cooling system, a power battery thermal management system and an air conditioning system; one side of a thermoelectric conversion device is composed of a power battery thermal management system The cooling liquid circuit of the power battery, the other side is connected in series with the cooling liquid circuit of the power electronic cooling system; the thermoelectric device is arranged in the air conditioning system, and evaporates with the coolant flowing out of the air conditioning compressor of the air conditioning system and through the cab respectively. The coolant of the battery cooler or the battery cooling exchanger is in contact with it. The whole heat management system of the fuel cell vehicle of the present invention integrates different heat management subsystems of the whole vehicle, and uses semiconductor materials to realize cooling of the power electronic system through heat conversion; in the same way, it realizes the heat recovery effect of the air conditioning system and avoids the compression of the air conditioner The phenomenon of machine-fluid shock improves the energy efficiency ratio and life of the air-conditioning system.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and relates to a fuel cell vehicle thermal management system and a control method thereof. Background technique [0002] At present, fuel cell vehicles are an advanced clean energy technology in the future, and major domestic and foreign OEMs attach great importance to and actively recommend their industrialization development. Compared with the thermal management of the traditional power vehicle, the fuel cell vehicle integrates multiple thermal management subsystems. Among them, the fuel cell stack realizes the conversion of high-quality energy through electrochemical reaction. Currently, the efficiency of the fuel cell reaches more than 45%, and the remaining energy is lost in the form of low-quality heat. As the auxiliary energy source of the whole vehicle, the power battery needs to meet the working temperature range. The vehicle air-conditioning system must not only meet the c...

AI Technical Summary

Problems solved by technology

[0008] To sum up, the fuel cell vehicle thermal management system in the prior art has problems such as the independence of each subsystem, the low efficiency of the vehicle-level thermal management system, and the lack of graded and refined management of the heat of each subsystem.

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