A fuel cell thermal management system and control method with thermal energy recovery
A thermal management system and fuel cell technology, applied in fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve the problems of ineffective use of heat, reduce coolant temperature, etc. The effect of reducing work pressure and increasing net output
Active Publication Date: 2022-08-05
金华氢途科技有限公司
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[0003] The existing technical scheme, the basic scheme is two temperature sampling points (T1 / T2), a water pump, a radiator, a heater, a water tank, and a three-way valve, wherein the temperature sampling point provides a thermal management control system State input, the water pump is used to adjust the flow of coolant, the heater is used to quickly increase the temperature of the heat management coolant, the radiator lowers the temperature of the coolant, the three-way valve adjusts the flow of the heater branch, and the water tank stores the coolant; however, the existing technology There are the following disadvantages: the heat generated by the fuel cell system is dissipated to the external environment through the thermal management system, and the heat cannot be effectively used
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[0031] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention, and not to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.
[0032] see figure 1 , the present application is a control method of a fuel cell thermal management system with thermal energy recovery, comprising the following steps:
[0033] S1. The control unit receives the preset upper limit temperature and lower limit temperature, and obtains the temperature value T1 at the outlet of the cooling liquid pipeline, the temperature value T2 at the inlet of the cooling...
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The present invention proposes and provides a fuel cell thermal management system with thermal energy recovery and a control method. By adding a heat exchanger and a heat-demanding system, when the overall temperature of the fuel cell system is still low, the external heat-demanding system can be used in reverse. Auxiliary heating reduces the power consumption of starting preheating; when the fuel cell system enters a higher temperature but has not yet reached the appropriate working temperature, the thermal management system can actively control the three-way valve, give priority to ensuring its own temperature rise, and prevent heat from passing through the heat exchanger It is taken away by the external heat-demanding system to ensure that the fuel cell system can reach a suitable temperature in a relatively short time; when the fuel cell system works at a high temperature and needs to dissipate heat, the thermal management system can use the heat exchanger to remove the excess fuel cell system from the fuel cell system. The waste heat is exchanged to the external heat-demanding system, while reducing the working pressure of the radiator, reducing power consumption, and increasing the net output of the fuel cell system.
Description
technical field [0001] The present invention relates to the technical field of fuel cell systems, and in particular, to a fuel cell thermal management system and a control method with thermal energy recovery. Background technique [0002] A fuel cell system is a device that converts fuel (reducing agent) and oxygen (oxidizing agent) into electrical energy by electrochemical means. The basic principle of hydrogen fuel cell is 2H2+O2→2H2O+electrical energy+thermal energy. Under the continuous operation of the fuel cell, its thermal energy will continue to accumulate, causing the temperature of the entire system to rise. At this time, the thermal management system is required to thermally manage the fuel cell system to ensure that the fuel cell can work at a suitable temperature. [0003] The existing technical solution, the basic solution is two temperature sampling points (T1 / T2), a water pump, a radiator, a heater, a water tank, and a three-way valve, wherein the temperature...
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IPC IPC(8): H01M8/04007H01M8/04014H01M8/0432H01M8/04701H01M8/04746
CPCH01M8/0432H01M8/04373H01M8/04701H01M8/04738H01M8/04746H01M8/04776H01M8/04014H01M8/04067Y02E60/50
Inventor 周鸿波郭志阳陈建山刘志洋胡钱坤
Owner 金华氢途科技有限公司