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Cold start apparatus for hydrogen fuel cell system

A fuel cell system and fuel cell stack technology, which is applied to fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problem of long cold start time, increase system energy consumption, and limit the ambient temperature of proton exchange membrane fuel cells. Adaptability and application range, etc., to achieve the effect of improving connection and support stiffness, reducing system energy consumption, and enhancing ambient temperature adaptability and application range

Pending Publication Date: 2018-09-07
BEIJING SINOHYTEC
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  • Claims
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Problems solved by technology

[0020] In the process of realizing the present invention, the applicant found that the low-temperature cold start time of the current proton exchange membrane fuel cell is too long, which increases the energy consumption of the system and severely limits the environmental temperature adaptability and application range of the proton exchange membrane fuel cell

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  • Cold start apparatus for hydrogen fuel cell system
  • Cold start apparatus for hydrogen fuel cell system
  • Cold start apparatus for hydrogen fuel cell system

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Embodiment Construction

[0076] Aiming at the technical problems mentioned in the above-mentioned background technology, the solution is as follows: if the temperature of the coolant that finally collects to the front end of the suction pump 22 through the replenishment circuit can be realized, it will not be lower than the temperature of the coolant that finally collects at the front end of the suction pump through the secondary circulation Coolant temperature, you can get no more than figure 1 The cold start time is even shorter.

[0077] Therefore, it may be considered to add a heating device to the water supply pipe section at the front end of the suction pump 22. Its function is to heat the supplementary cooling liquid from the expansion tank to ensure that the temperature of the supplementary cooling liquid from the expansion tank is higher than that of the secondary circulation circuit. The temperature of the cooling liquid out of the fuel cell stack 10, after the two are mixed, is pumped by th...

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Abstract

The invention provides a cold start apparatus for a hydrogen fuel cell system. The hydrogen fuel cell system includes a fuel cell pile, a secondary circulation circuit and a water supply path; the secondary circulation circuit includes a liquid coolant circulation pipeline and a secondary circulation heating device arranged on the liquid coolant circulation pipeline and used for heating a liquid coolant in the liquid coolant circulation pipeline; and the water supply path includes an expansion water tank for supplementing the liquid coolant to the liquid coolant circulation pipeline and a water supply path heating device arranged on the pipeline between the expansion water tank and the liquid coolant circulation pipeline and used for heating the supplied liquid coolant. In the cold start apparatus, the water supply path heating device heats the supplemented liquid coolant supplemented to the liquid coolant circulation pipeline, and the secondary circulation heating device heats the liquid coolant in the liquid coolant circulation pipeline. Two heating devices work together in the invention, so the heating process of the secondary circulation circuit the fuel cell pile is accelerated, and the cold start time is shortened.

Description

technical field [0001] The invention relates to the technical field of clean energy, in particular to a cold start device for a hydrogen fuel cell system. Background technique [0002] Proton Exchange Membrane Fuel Cell (PEMFC for short) is widely used in the fields of automobiles and rail transit due to its advantages of zero pollution, high efficiency, and stable and controllable reaction at room temperature. [0003] Proton exchange membrane fuel cells will generate a lot of heat during operation, and the concentration of heat will lead to a rapid temperature rise inside the proton exchange membrane fuel cell system, which will affect the working efficiency of the fuel cell. Therefore, air cooling or liquid cooling is usually used. Cooling takes place inside the fuel cell. Generally, high-power proton exchange membrane fuel cell systems (output power: above 5kW) use liquid cooling to control the temperature fluctuation range of the cooling liquid: 55-70°C. Therefore, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04029H01M8/04007H01M8/04225H01M8/04223H01M8/1007
CPCH01M8/04029H01M8/04037H01M8/04074H01M8/04225H01M8/04268H01M8/1007H01M2250/20Y02E60/50
Inventor 应俊波
Owner BEIJING SINOHYTEC
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