Control method of fuel cell waste heat utilization system
A fuel cell and control method technology, applied in the direction of fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve problems such as poor compatibility, influence, and inability to control the heat dissipation capacity of radiators, so as to improve energy utilization and improve The effect of waste heat utilization rate and high environmental applicability
Pending Publication Date: 2022-05-06
BEIJING SINOHYTEC
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Problems solved by technology
The disadvantage of some fuel cell engine adaptive waste heat utilization systems in the prior art is that their control methods are relatively simple, and generally only control the opening or closing of waste heat utilization according to whether the ambient temperature is low or not and a certain threshold
The disadvantage of this control method is that it will cause large fluctuations in the overall heat dissipation of the fuel cell system, affect the working stability of the heat dissipation system, and have an adverse effect on the temperature control of the fuel cell.
In addition, the control method of the waste heat utilization system in the prior art cannot control the working process according to the heat dissipation capacity of different radiators, and the compatibility is poor
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[0030] Figure 1-2And the following description describes alternative embodiments of the invention to teach those skilled in the art how to implement and reproduce the invention. In order to teach the technical scheme of the invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that modifications or substitutions derived from these embodiments will fall within the scope of protection of the present invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variants of the invention. Therefore, the invention is not limited to the following optional embodiments, but is limited only by the claims and their equivalents.
[0031] Figure 1 A schematic diagram of a control method of a fuel cell waste heat utilization system according to an embodiment of the present invention is shown. as Figure 1 As shown, the fuel cell waste heat utilization system includes...
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The invention provides a control method of a fuel cell waste heat utilization system. The control method comprises the following steps: acquiring an environment temperature T1; looking up a table according to the environment temperature T1 and the radiator performance to obtain heat dissipating capacity Q; obtaining a theoretical cooling liquid temperature T3 entering the radiator according to a preset target in-pile temperature T2 and the heat dissipating capacity Q; and judging whether the theoretical temperature T3 of the cooling liquid entering the radiator is greater than a preset target temperature T4 or not, and if so, starting a warm air assembly of the fuel cell waste heat utilization system. The fuel cell waste heat utilization system has the advantages that the fuel cell waste heat utilization system recovers heat of the fuel cell engine by controlling the inlet temperature of the radiator, the energy utilization rate is increased, the endurance mileage is increased, and meanwhile the temperature control stability target of the fuel cell system is met; the environment applicability is high; the situation that a waste heat utilization system cannot be normally started due to sensor errors or control errors is avoided, and the waste heat utilization rate is increased.
Description
technical field [0001] The invention relates to a waste heat control method of a fuel cell. Background technology [0002] Hydrogen fuel cell is a power generation device that directly converts the chemical energy generated by the reaction between hydrogen and oxygen into electrical energy through electrochemical reaction. It has the advantages of high power generation efficiency and low environmental pollution. Therefore, it is widely used in the field of automobile. The fuel cell will generate a lot of heat during operation, so it is necessary to heat the stack, but excessive heat dissipation will lead to low temperature of the stack and affect the working efficiency of the stack. Therefore, the heat dissipation system of the fuel cell needs to maintain the temperature of the fuel cell in an appropriate range. At the same time, in order to adapt to the use in cold areas, the passenger compartment of fuel cell vehicles also needs to have a heating system. [0003] When the ambie...
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IPC IPC(8): B60H1/04H01M8/04007H01M8/04029H01M8/0432
CPCB60H1/04H01M8/04074H01M8/04029H01M8/04328H01M8/04358
Inventor 胥巍巍徐云飞曲观书
Owner BEIJING SINOHYTEC