Water temperature control method and system for fuel cell

A water temperature control method and fuel cell technology, applied in fuel cells, control/regulation systems, temperature control, etc., can solve problems such as poor control effect accuracy

Active Publication Date: 2021-04-27
SHANGHAI HYDROGEN PROPULSION TECH CO LTD
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Problems solved by technology

In the prior art, the water outlet temperature of the fuel cell is usually controlled based on the fuzzy PID algorithm, but the accuracy of the control effect is not good

Method used

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  • Water temperature control method and system for fuel cell
  • Water temperature control method and system for fuel cell
  • Water temperature control method and system for fuel cell

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Embodiment Construction

[0065] As mentioned in the background technology, the fuel cell water temperature control methods in the prior art are mostly based on the fuzzy PID algorithm to control the fuel cell water temperature, the purpose of which is to control the fuel cell water outlet temperature to be the same as the target water outlet temperature, but the existing technology Some of the fuzzy PID algorithms only control the fan of the fuel cell temperature management system, not the thermostat. The adjustment effect brought by this is not as fine as the adjustment effect of the electronic thermostat. The control object of some fuzzy PID algorithms is the electronic thermostat, but due to the adjustment of the fuzzy PID algorithm, there is a large delay effect in the adjustment process, and it is impossible to make the water outlet temperature change with the change of the target temperature. At the same time, the overshoot is larger and the response time is longer. Moreover, due to the expert ...

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Abstract

The invention discloses a water temperature control method and system for a fuel cell. The method employs a multi-internal-model control algorithm to achieve the control of the opening degree of an electronic thermostat, thereby achieving the precise control of the water temperature of the fuel cell. The multi-internal-model control algorithm has the characteristics of high robustness, good traceability and the like, and is suitable for large-hysteresis nonlinear system control. According to the scheme, model linearization is carried out on typical working condition points of the fuel cell, different working condition points are identified, and models under different working condition points are obtained, thereby designing an internal model controller and a feedforward controller under different working condition points. Based on the algorithm, ideal control over the water temperature under all working conditions is achieved, and the method has the advantages of being short in response time and small in overshoot.

Description

technical field [0001] The present application relates to the technical field of automatic control, and more specifically, to a method and system for controlling the water temperature of a fuel cell. Background technique [0002] Proton exchange membrane fuel cell (hereinafter referred to as fuel cell) is a new type of fuel cell, its electrolyte is a solid organic membrane, and its exchange membrane can conduct protons under humidified conditions. Due to its environmental friendliness, high energy conversion rate, no noise and fast response, this kind of fuel cell is considered to be a new energy power generation system that will be developed in the future. [0003] When the fuel cell is in different working conditions or the whole vehicle requires it to output different power, the water temperature control requirements for the fuel cell are different, and the temperature of the fuel cell flowing out of the fuel cell (referred to as water temperature for short) needs to be c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/19H01M8/04992
CPCG05D23/1931H01M8/04992Y02E60/50
Inventor 陈婕周守玉陈凤祥焦杰然
Owner SHANGHAI HYDROGEN PROPULSION TECH CO LTD
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