New energy automobile thermal management system and method

By adding heat exchangers and two three-way solenoid valves to the thermal management system of new energy vehicles, and using the waste heat of the stack coolant for heating, the energy waste problem in the thermal management method of hydrogen fuel cell vehicles in the prior art has been solved, the system efficiency is improved and the vehicle cost is reduced.

CN119704971APending Publication Date: 2025-03-28FTXT ENERGY TECH CO LTD
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Patent Information

Application Number
CN202311256138.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The thermal management method of hydrogen fuel cell vehicles in the prior art has the problem of energy waste and has failed to effectively utilize the heat generated in the fuel cell system.

Method used

A new energy vehicle thermal management system is designed, including fuel cell system, air conditioning system, vehicle controller and heat exchanger. By adding heat exchanger and two three-way solenoid valves, heating is achieved using the waste heat of the stack coolant.

Benefits of technology

It improves the overall efficiency of the fuel cell system, reduces the power and hydrogen consumption of the passenger compartment heating, cancels the heater in the fuel cell system, reduces the cost of the whole vehicle, and ensures the cold start performance of the fuel cell system.

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Abstract

The invention discloses a new energy automobile thermal management system and method, which is applied to the technical field of new energy automobiles, and comprises the following steps: when the current stack cooling liquid temperature is smaller than a heating temperature threshold, a first electronic water pump is started, a first three-way solenoid valve closes a first water outlet, a second water outlet is opened, and a second electronic water pump and a heater are started; the second three-way electromagnetic valve closes the first water outlet and opens the second water outlet; when the current stack cooling liquid temperature is larger than or equal to the heating temperature threshold value and smaller than the heat dissipation temperature threshold value, the first electronic water pump is started, the first three-way electromagnetic valve closes the first water outlet, the second water outlet is opened, the second electronic water pump is started, and the heater is closed. By adding the heat exchanger and the two three-way electromagnetic valves, the waste heat of the pile cooling liquid is used for heating, the energy utilization rate is improved, meanwhile, the fuel cell system exchanges heat with the heater in the air conditioning system through the heat exchanger, and the cold start performance is guaranteed.
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