Temperature control method for proton exchange membrane fuel cell system for vehicle

A technology of fuel cell system and temperature control method, which is applied in the direction of fuel cells, fuel cell additives, fuel cell heat exchange, etc., and can solve problems such as difficulty in meeting temperature control requirements, strong time-varying fuel cells, and small application range of models, etc. Achieve the effects of avoiding adverse effects, fast dynamic response, and avoiding frequent start and stop
CN112615031AActive Publication Date: 2021-04-06HAIDRIVER (QINGDAO) ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HAIDRIVER (QINGDAO) ENERGY TECH CO LTD
Publication Date
2021-04-06

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Abstract

The invention discloses a temperature control method for a proton exchange membrane fuel cell system for a vehicle, which comprises the following steps of: detecting the inlet temperature of a cooling loop of a fuel cell stack by using a temperature sensor, inputting the inlet temperature into a controller, and achieving cooling fan control based on the controller, wherein the cooling fan control comprises fuzzy logic adaptive proportional integral control and feedforward compensation control, a gain parameter of the proportional integral control is adaptively updated by a fuzzy logic algorithm, the load current of the fuel cell is used as disturbance and is used for feedforward compensation, and meanwhile, the opening degree of the fan is determined by the total heat dissipating capacity demand and the number of cooling fans; and finally, inputting a control signal output by the controller into an actuator of a thermal management subsystem to control the temperature of the cooling inlet of the fuel cell stack. The temperature control strategy provided by the invention can reduce the temperature fluctuation during the operation of the vehicle fuel cell engine, improve the system performance and prolong the service life.
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Description

technical field

[0001] The invention belongs to the technical field of fuel cells, in particular to a method for controlling the temperature of a proton exchange membrane fuel cell system for vehicles. Background technique

[0002] Fuel cell vehicles are an important branch of new energy vehicles. Due to their advantages such as fast hydrogen filling, high system efficiency, low noise, and zero emissions, they are considered to be one of the ultimate solutions for future vehicles. Fuel cells work under dynamic loads. Temperature fluctuations of fuel cell systems have an important impact on engine performance and service life. Long-term low temperature conditions can easily cause fuel cell stack flooding. Long-term flooding failures will cause fuel starvation and eventually lead to Irreversible decay of the catalyst layer. At the same time, excessive temperature causes excessive thermal stress on the exchange membrane, and pinholes or cracks will spontaneously form under str...

Claims

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