Rapid low-temperature starting method for fuel cell system
A fuel cell system and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as low-temperature start-up failure, shortened fuel cell life, and inability to react, and achieve rapid low-temperature start-up and shorten low-temperature start-up time Effect
Active Publication Date: 2020-04-21
SHANGHAI SHENLI TECH CO LTD
View PDF5 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the inside of the fuel cell is completely blocked by icing, if the temperature of the fuel cell does not rise above zero, the icing will cause the catalytic layer to be blocked, the reaction gas cannot reach the surface of the catalyst, and the reaction cannot proceed. The fuel cell stack stops discharging and starts at low temperature. fail
At the same time, internal icing will damage the key materials of fuel cell materials, resulting in reduced performance and shortened fuel cell life
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0040] Such as figure 1 As shown, the present invention provides a fast low-temperature start-up method for a fuel cell system. When it is detected that the external temperature is lower than zero degrees Celsius, the fuel cell system can be quickly started by the method of the present invention, including the following steps:
[0041] S1) Open the hydrogen subsystem, and feed hydrogen into the fuel cell stack 7;
[0042] S2) Start the DCDC controller 17, and set the fuel cell stack current value as the first starting current;
[0043] S3) Open the air subsystem, and feed air into the fuel cell stack 7;
[0044] S4) The fuel cell starts to generate electricity, and the output current increases to the first starting current;
[0045] S5) Continue to load until the fuel cell reaches 50% of the rated output power, and complete fast low-temperature start-up.
[0046] Such as figure 2 As shown, the device used in the low-temperature start-up method of the fuel cell system of t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a rapid low-temperature starting method for a fuel cell system. The method is used for quickly starting the fuel cell system when detecting that external temperature is lowerthan 0 DEG C. The rapid low-temperature starting method comprises the following steps that: S1) a hydrogen subsystem is switched on to introduce hydrogen into a fuel cell stack; S2) a DCDC controlleris started, and first starting current is set; S3) an air subsystem is switched on to introduce air into the fuel cell stack; S4) the fuel cell starts to generate power, and output current is increased to the first starting current, and S5) continuous loading is performed, so that the fuel cell until reaches 50% of rated output power, and rapid low-temperature starting is completed. Compared withthe prior art, the method has the advantages of simple operation, capability of shortening the low-temperature starting time of the fuel cell system, and the like.
Description
technical field [0001] The invention relates to the technical field of fuel cell systems, in particular to a fast low-temperature start-up method for a fuel cell system. Background technique [0002] A proton exchange membrane fuel cell (PEMFC), also called a polyelectrolyte fuel cell (PEFC), is a device that directly converts the chemical energy of a reducing agent and an oxidizing agent into electrical energy. When a fuel cell is in use, it usually requires a set of corresponding auxiliary systems, mainly including hydrogen subsystem, air subsystem, cooling system, power output system, voltage detection system and other accessory systems, which constitute the fuel cell engine system as a whole. Among them, the hydrogen subsystem provides hydrogen for the fuel cell stack, and adjusts the pressure and flow of hydrogen entering the stack according to the operating conditions; the air subsystem provides an appropriate amount of oxidant (air or oxygen) for the stack, and adjust...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01M8/04225H01M8/04302H01M8/04858
CPCH01M8/04225H01M8/04302H01M8/0491Y02E60/50
Inventor 徐鑫甘全全
Owner SHANGHAI SHENLI TECH CO LTD