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Fuel cell thermal management system and method

A thermal management system, fuel cell technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of large overshoot, coupling between water pumps and cooling fans, and difficult control, and achieve good operation. The effect of water flow

Pending Publication Date: 2021-08-17
黄冈格罗夫氢能汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the technical problem that the overshoot of the performance parameter control existing in the prior art is large, and the control of the water pump and the cooling fan also has a coupling phenomenon, which leads to the technical problem that the control is not easy to realize

Method used

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  • Fuel cell thermal management system and method
  • Fuel cell thermal management system and method
  • Fuel cell thermal management system and method

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Embodiment Construction

[0047] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] refer to figure 1 , in the existing fuel cell thermal management system, through the electronic thermostat or the three-way valve, the cooling water can be heated through the heat dissipation seal in the large circulation loop, and the PTC heater in the small circulation loop; the flow channel has three ways , that is, a mixture of large circulation, small circulation and large circulation and small circulation;

[0049] When the water temperature in the cooling circuit does not need to dissipate heat, such as the start-up stage; the cooling water will go through the small circulation loop. At this time, because the small circulation loop has a PTC heater, the water resistance of the waterway is relatively large. When the fuel cell has a large power demand , the system response time will be longer;

[0050] The...

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Abstract

The invention relates to the field of fuel cell management, and provides a fuel cell thermal management system and method, and the system comprises a fuel cell stack, a water outlet information collection unit, a water inlet information collection unit, an MFDU flow distribution unit, a water pump, a water pump water inlet flowmeter, a deionizer, a PTC heater, a cooling fan and an expansion kettle. Seamless switching of different circulation loops is carried out by adopting the MFDU flow distribution unit, and the influence effect on the change of the cooling water temperature before and after loop switching is greatly reduced; a direct-current channel is added, when the cooling loop does not need to heat cooling water, the direct-current channel loop can be directly connected due to the fact that the water resistance of the PTC heater loop is large, the water flow is improved, and the change of the operation output power of the fuel cell system is better matched.

Description

technical field [0001] The invention relates to the field of fuel cell management, in particular to a fuel cell thermal management system and method. Background technique [0002] During the operation of the fuel cell system, it is very important to ensure a suitable temperature environment during the operation of the fuel cell, which has a great impact on its output power performance and operating life. [0003] The size circulation of the cooling water circuit of the fuel cell system is usually realized by the traditional electronic thermostat or three-way valve. After the water pump is running, the flow and pressure of the water circuit are provided to cool the stack, and the cooling water outlet of the stack passes through the electronic thermostat or The three-way valve selects the large circulation and small circulation according to the current water temperature for heat dissipation and heating requirements, thereby ensuring that the water temperature is within a certa...

Claims

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Application Information

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IPC IPC(8): H01M8/04029H01M8/04044H01M8/0432H01M8/0438H01M8/04694H01M8/04955
CPCH01M8/04029H01M8/04044H01M8/04358H01M8/04417H01M8/04694H01M8/04955Y02E60/50
Inventor 龙瑞德郝义国
Owner 黄冈格罗夫氢能汽车有限公司
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