A start-up control method and device for a fuel cell system
A fuel cell system and fuel cell stack technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of unfavorable fuel cell system cost control, poor user experience, and increase the overall cost of the fuel cell system, so as to avoid low temperature The effect of failure to start
Active Publication Date: 2022-02-08
SHANGHAI HYDROGEN PROPULSION TECH CO LTD
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Problems solved by technology
[0004] However, in the existing technology, by adding an additional heating device to assist the fuel cell system to complete the cold start, it will inevitably increase the overall cost of the fuel cell system, which is not conducive to the cost control of the fuel cell system, and the heating power of the existing additional heating device Small, long duration, poor user experience
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[0049]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0050] In order to clearly and accurately illustrate the fuel cell system control method provided by the embodiment of the present invention, the fuel cell system mentioned in the embodiment of the present invention is briefly introduced first. The fuel cell system includes a fuel cell stack, an air compressor, a hydrogen circulation pump, and...
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The start-up control method and device of the fuel cell system provided by the present invention are applied in the field of fuel cell technology. The method responds to start-up commands and adjusts the air supply parameters, hydrogen supply parameters and coolant supply parameters of the fuel cell stack. When the preset current loading conditions are all met, the controller increases the output current of the fuel cell stack according to the preset current slope, and when the output current of the fuel cell stack reaches the preset current threshold and the speed of the air compressor reaches the preset Maintain the current state of the system after the speed threshold of the air compressor, and then accumulate the calorific value based on the output current of the fuel cell stack until the calorific value of the fuel cell stack reaches the preset calorific value threshold to complete the cold start. The control method can quickly complete the low-temperature cold start without the heating device, which helps to optimize the vehicle user experience and reduce the overall cost of the fuel cell system.
Description
technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a fuel cell system starting control method and device. Background technique [0002] When the fuel cell system is in an extremely low temperature environment, such as -30°C, after sufficient cooling, the fuel cell stack and coolant will be below 0°C. If the fuel cell system is started at the preset current value in this case, due to the The battery stack and cooling liquid have large heat capacity and slow temperature rise, and a large amount of water generated during the reaction process will freeze at low temperature, which will block the reaction gas transmission channel, and eventually lead to the failure of the fuel cell system to start. [0003] In order to solve this problem, most of the existing fuel cell systems are additionally equipped with heating devices, such as PTC heaters. Start after a low temperature state to achieve the purpose of improving the ...
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IPC IPC(8): H01M8/04089H01M8/04111H01M8/04223H01M8/04225H01M8/04302
CPCH01M8/04302H01M8/04225H01M8/04089H01M8/04104H01M8/04111H01M8/04268H01M8/04253Y02E60/50
Inventor朱益佳庄琳琳聂玉洁
OwnerSHANGHAI HYDROGEN PROPULSION TECH CO LTD