CA3033231C - Cooling system of fuel cell of hydrogen energy tram - Google Patents
Cooling system of fuel cell of hydrogen energy tram Download PDFInfo
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- CA3033231C CA3033231C CA3033231A CA3033231A CA3033231C CA 3033231 C CA3033231 C CA 3033231C CA 3033231 A CA3033231 A CA 3033231A CA 3033231 A CA3033231 A CA 3033231A CA 3033231 C CA3033231 C CA 3033231C
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04037—Electrical heating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
A cooling system of a hydrogen-energy tram fuel cell, comprising: a hydrogen fuel cell (1), a circulation device, a cooling device and an electric heating tube (12); the hydrogen fuel cell (1), the circulation device and the cooling device are sequentially connected by pipelines, and form a cooling circulation loop; one end of the electric heating tube (12) is connected with the circulation device by means of the pipelines, while the other end thereof is in communication with the hydrogen fuel cell (1) by means of the pipelines, thus forming a heating circulation loop. The cooling system can precisely and relatively stably control the temperature of a cooling liquid when entering the hydrogen fuel cell (1) to be within an optimal reaction temperature range, such that the hydrogen fuel cell (1) is in a suitable reaction temperature environment, thus improving the reaction efficiency of the hydrogen fuel cell (1); the cooling system is structurally simple, notably effective and energy-saving.
Description
COOLING SYSTEM OF FUEL CELL OF HYDROGEN ENERGY TRAM
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TECHNICAL FIELD
The present disclosure relates to the field of a tram, in particular relates to a cooling system of a fuel cell of a hydrogen-energy tram.
BACKGROUND
A fuel cell is a power generation device that can directly convert chemical energy existing in a fuel and an oxidant into electrical energy. And the fuel cell is an environmentally friendly and efficient new power generation device and is widely used in various fields. A hydrogen fuel cell uses hydrogen, the chemical element, to produce stored energy. There is only water generated in the reaction of the hydrogen fuel cell, therefore it is a green and environmentally friendly source.
Due to the limited space under the low-floor tram, most devices are installed on the platform on the vehicle roof. However, the low-floor tram powered by the hydrogen energy needs to add hydrogen power system devices such as the hydrogen fuel cell, the cooling device, the hydrogen storage device, DC-DC, the storage battery on the vehicle roof. At the same time, the hydrogen fuel cell is with high rated power and high heat dissipation requirement. Therefore, the cooling system needs to meet the high-power heat dissipation requirement of the hydrogen fuel cell in the limited space beyond the vehicle roof. The hydrogen fuel cell is with highest reaction efficiency when the reaction exchange membrane is at around 60 C. However, when the ambient temperature is too low or the hydrogen fuel cell just starts up, the temperature of the coolant inside the cooling system is too low, and the hydrogen fuel cell cannot reach the optimal reaction environmental temperature, resulting in low working efficiency of the hydrogen fuel cell.
At the same time, the situation that the ionic concentration of coolant of the cooling system of the hydrogen fuel cell is too high will greatly influence the service life of the reaction exchange membrane of the hydrogen fuel cell. Therefore, a reasonable cooling system is needed, to ensure that the hydrogen fuel cell works in the reaction environment with constant temperature.
In view of this, the present disclosure is proposed.
SUMMARY
The technical problem to be solved in the present disclosure is to overcome the shortcomings of the prior art, and to provide a cooling system of a fuel cell of a hydrogen energy tram. The present disclosure can precisely and relatively stably control the coolant flowing into the hydrogen fuel cell to be within the optimal reaction temperature range, so that the hydrogen fuel cell is at the environment with suitable reaction temperature and the reaction efficiency of the hydrogen fuel cell is improved. And the structure of the present disclosure is easy, the effect is obvious, and the energy is saved.
In order to achieve the above subject, the technical scheme of the present disclosure is as follows:
A cooling system of a fuel cell of a hydrogen energy tram comprises a hydrogen fuel cell, a circulation device, a cooling device and an electric heating tube. The hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming a cooling circulation loop.
One end of the electric heating tube is communicated with the circulation device through a pipe, and the other end is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop.
Further, the cooling system also comprises a controller. The controller is respectively connected with the circulation device and the cooling device.
Preferably, the circulation device comprises a circulation water pump and a water pump controller connected with the circulation water pump. The cooling device comprises a cooling fan and a cooling fan controller connected with the cooling fan. The water pump controller and the cooling fan controller are respectively connected with the controller.
Further, the cooling system also comprises a water supply tank. The water supply tank is communicated with the cooling circulation loop through a pipe.
Preferably, one end of the pipe is connected with the water supply tank, and the other
=
TECHNICAL FIELD
The present disclosure relates to the field of a tram, in particular relates to a cooling system of a fuel cell of a hydrogen-energy tram.
BACKGROUND
A fuel cell is a power generation device that can directly convert chemical energy existing in a fuel and an oxidant into electrical energy. And the fuel cell is an environmentally friendly and efficient new power generation device and is widely used in various fields. A hydrogen fuel cell uses hydrogen, the chemical element, to produce stored energy. There is only water generated in the reaction of the hydrogen fuel cell, therefore it is a green and environmentally friendly source.
Due to the limited space under the low-floor tram, most devices are installed on the platform on the vehicle roof. However, the low-floor tram powered by the hydrogen energy needs to add hydrogen power system devices such as the hydrogen fuel cell, the cooling device, the hydrogen storage device, DC-DC, the storage battery on the vehicle roof. At the same time, the hydrogen fuel cell is with high rated power and high heat dissipation requirement. Therefore, the cooling system needs to meet the high-power heat dissipation requirement of the hydrogen fuel cell in the limited space beyond the vehicle roof. The hydrogen fuel cell is with highest reaction efficiency when the reaction exchange membrane is at around 60 C. However, when the ambient temperature is too low or the hydrogen fuel cell just starts up, the temperature of the coolant inside the cooling system is too low, and the hydrogen fuel cell cannot reach the optimal reaction environmental temperature, resulting in low working efficiency of the hydrogen fuel cell.
At the same time, the situation that the ionic concentration of coolant of the cooling system of the hydrogen fuel cell is too high will greatly influence the service life of the reaction exchange membrane of the hydrogen fuel cell. Therefore, a reasonable cooling system is needed, to ensure that the hydrogen fuel cell works in the reaction environment with constant temperature.
In view of this, the present disclosure is proposed.
SUMMARY
The technical problem to be solved in the present disclosure is to overcome the shortcomings of the prior art, and to provide a cooling system of a fuel cell of a hydrogen energy tram. The present disclosure can precisely and relatively stably control the coolant flowing into the hydrogen fuel cell to be within the optimal reaction temperature range, so that the hydrogen fuel cell is at the environment with suitable reaction temperature and the reaction efficiency of the hydrogen fuel cell is improved. And the structure of the present disclosure is easy, the effect is obvious, and the energy is saved.
In order to achieve the above subject, the technical scheme of the present disclosure is as follows:
A cooling system of a fuel cell of a hydrogen energy tram comprises a hydrogen fuel cell, a circulation device, a cooling device and an electric heating tube. The hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming a cooling circulation loop.
One end of the electric heating tube is communicated with the circulation device through a pipe, and the other end is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop.
Further, the cooling system also comprises a controller. The controller is respectively connected with the circulation device and the cooling device.
Preferably, the circulation device comprises a circulation water pump and a water pump controller connected with the circulation water pump. The cooling device comprises a cooling fan and a cooling fan controller connected with the cooling fan. The water pump controller and the cooling fan controller are respectively connected with the controller.
Further, the cooling system also comprises a water supply tank. The water supply tank is communicated with the cooling circulation loop through a pipe.
Preferably, one end of the pipe is connected with the water supply tank, and the other
2 Date recu/Date Received 2020-04-20 end is communicated with the pipe between the circulation water pump and the hydrogen fuel cell.
Further, the cooling system also comprises at least two temperature sensors.
The temperature sensors are connected with the controller.
Preferably, the cooling system further comprises a first temperature sensor arranged between the hydrogen fuel cell and the cooling device, and a second temperature sensor arranged between the circulation water pump and the cooling device.
Further, the cooling system also comprises at least two pressure sensors. The pressure sensors are connected with the controller.
Preferably, the cooling system further comprises a first pressure sensor arranged between the hydrogen fuel cell and the cooling device, and a second pressure sensor arranged between the circulation water pump and the cooling device.
Further, the cooling system also comprises a three-way valve. The three-way valve is respectively connected with the electric heating tube, the hydrogen fuel cell and the cooling device.
Preferably, the three-way valve is connected with the controller, and is controlled by the controller for the switch between the cooling circulation loop and the heating circulation loop.
Further, the cooling system also comprises an ionic concentration detecting device.
The ionic concentration detecting device is arranged in the cooling circulation loop/heating circulation loop, and is connected with the controller.
Preferably, the ionic concentration detecting device is arranged between the cooling device and the hydrogen fuel cell.
Further, the cooling system also comprises a deionization device. One end of the deionization device is communicated with the cooling circulation loop/heating circulation loop through a pipe, and the other end is communicated with the water supply tank through a pipe.
Further, the deionization device is a deionization filter.
Further, the water supply tank is provided with an air-exhaust opening. The position
Further, the cooling system also comprises at least two temperature sensors.
The temperature sensors are connected with the controller.
Preferably, the cooling system further comprises a first temperature sensor arranged between the hydrogen fuel cell and the cooling device, and a second temperature sensor arranged between the circulation water pump and the cooling device.
Further, the cooling system also comprises at least two pressure sensors. The pressure sensors are connected with the controller.
Preferably, the cooling system further comprises a first pressure sensor arranged between the hydrogen fuel cell and the cooling device, and a second pressure sensor arranged between the circulation water pump and the cooling device.
Further, the cooling system also comprises a three-way valve. The three-way valve is respectively connected with the electric heating tube, the hydrogen fuel cell and the cooling device.
Preferably, the three-way valve is connected with the controller, and is controlled by the controller for the switch between the cooling circulation loop and the heating circulation loop.
Further, the cooling system also comprises an ionic concentration detecting device.
The ionic concentration detecting device is arranged in the cooling circulation loop/heating circulation loop, and is connected with the controller.
Preferably, the ionic concentration detecting device is arranged between the cooling device and the hydrogen fuel cell.
Further, the cooling system also comprises a deionization device. One end of the deionization device is communicated with the cooling circulation loop/heating circulation loop through a pipe, and the other end is communicated with the water supply tank through a pipe.
Further, the deionization device is a deionization filter.
Further, the water supply tank is provided with an air-exhaust opening. The position
3 Date recu/Date Received 2020-04-20 of the air-exhaust opening is higher than the position corresponding to the maxima water level of the water supply tank. The air-exhaust opening is communicated with the cooling circulation loop through an air-exhaust pipe.
Preferably, one end of the air-exhaust pipe is communicated with the air-exhaust opening, and the other end is communicated with the cooling device;
More preferably, the air-exhaust pipe is provided with an air-exhaust valve.
In summary, the cooling system of the fuel cell for the hydrogen energy cell of the present disclosure has the following advantages:
1. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure realizes that the hydrogen fuel cell is at a relatively stable reaction environment.
The hydrogen fuel cell, the circulation device and the cooling device of the present disclosure are connected in turn through the pipes, forming the cooling circulation loop.
The cooling system of the fuel cell of the hydrogen energy tram also comprises an electric heating tube. One end of the electric heating tube is communicated with the circulation device through the pipe, and the other end is communicated with the hydrogen fuel cell through the pipe, forming the heating circulation loop. The cooling circulation loop and the heating circulation loop are switched based on the temperature of the coolant in the pipe, so that the hydrogen fuel cell is at a relatively stable reaction environment and the reaction efficiency of the hydrogen fuel cell is improved.
2. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure is provided with the deionizing circulation loop outside the circulation loop.
The coolant deionized by the deionization device flows to the water supply tank, and then flows back to the circulation loop through the water supply loop. It can effectively control the ionic concentration of the coolant in the circulation loop, and can avoid the problem that the excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
3. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure further communicates the cooling device and the water supply tank through the air-exhaust pipe, exhausting the air in the circulation loop. It ensures the cooling effect of
Preferably, one end of the air-exhaust pipe is communicated with the air-exhaust opening, and the other end is communicated with the cooling device;
More preferably, the air-exhaust pipe is provided with an air-exhaust valve.
In summary, the cooling system of the fuel cell for the hydrogen energy cell of the present disclosure has the following advantages:
1. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure realizes that the hydrogen fuel cell is at a relatively stable reaction environment.
The hydrogen fuel cell, the circulation device and the cooling device of the present disclosure are connected in turn through the pipes, forming the cooling circulation loop.
The cooling system of the fuel cell of the hydrogen energy tram also comprises an electric heating tube. One end of the electric heating tube is communicated with the circulation device through the pipe, and the other end is communicated with the hydrogen fuel cell through the pipe, forming the heating circulation loop. The cooling circulation loop and the heating circulation loop are switched based on the temperature of the coolant in the pipe, so that the hydrogen fuel cell is at a relatively stable reaction environment and the reaction efficiency of the hydrogen fuel cell is improved.
2. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure is provided with the deionizing circulation loop outside the circulation loop.
The coolant deionized by the deionization device flows to the water supply tank, and then flows back to the circulation loop through the water supply loop. It can effectively control the ionic concentration of the coolant in the circulation loop, and can avoid the problem that the excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
3. The cooling system of the fuel cell of the hydrogen energy tram of the present disclosure further communicates the cooling device and the water supply tank through the air-exhaust pipe, exhausting the air in the circulation loop. It ensures the cooling effect of
4 the cooling system. And the pressure in the circulation loop is reduced by exhausting the excess air in the circulation loop, further ensuring the running safety of the cooling system.
According to one aspect of the present invention, there is provided a cooling system of a fuel cell of a hydrogen energy tram, comprising a hydrogen fuel cell, a circulation device, a cooling device and an electric heating tube, wherein, the hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming a cooling circulation loop; one end of the electric heating tube is communicated with the circulation device through a pipe, and another end of the electric heating tube is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop; the cooling system of the fuel cell of the hydrogen energy tram further comprises at least two temperature sensors, the temperature sensors are connected with the controller.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a structural diagram of a cooling system of a fuel cell of the hydrogen energy tram of the present disclosure.
As shown in Fig. 1, 1. hydrogen fuel cell 2. circulation water pump 3. water pump controller 4. cooling fan 5. cooling fan controller 6. water supply tank 7.
first temperature sensor 8. first pressure sensor 9. second temperature sensor 10. second pressure sensor 11. air-exhaust valve 12. electric heating tube 13. three-way valve 14. ionic concentration detecting device 15. deionization device 16. water-supplying/water-discharging valve.
DETAILED DESCRIPTION
To make the above objects, features and advantages of the present disclosure clearer and easier to understand, the following is further described in details with the present disclosure with accompanying drawings and embodiments.
As shown in Fig. 1, the present disclosure provides a cooling system of a fuel cell of a hydrogen energy tram, which comprises a cooling circulation loop formed by sequentially connecting a hydrogen fuel cell 1, a circulation device and a cooling device through pipes.
The cooling system further comprises an electric heating tube 12. One end of the electric heating tube 12 is communicated with the circulation device through the pipe, and the Date Recue/Date Received 2021-03-24 other end is communicated with the hydrogen fuel cell 1 through pipe, so that the heating circulation loop is formed.
Specifically, the hydrogen fuel cell 1 of the present embodiment generates electric energy, using hydrogen to react with the oxygen in the air under the action of the catalyst to generate electricity and water, thereby providing a green and environmentally friendly power source for the tram. Wherein, the cooling system cools the hydrogen fuel cell 1 by 5a Date Recue/Date Received 2021-03-24 the cooling circulation loop, so that the heat generated during the proper functioning of the hydrogen fuel cell 1 is immediately dissipated. And it can control the coolant inside the cooling circulation loop to enter into the hydrogen fuel cell 1 at a constant temperature, improving the reaction efficiency of the hydrogen fuel cell 1. The high-temperature coolant in the cooling system, discharged from the hydrogen fuel cell 1 is pumped by the circulation device into the cooling device for cooling, the coolant after the cooling is then pumped into the hydrogen fuel cell 1, and is cooled, and the cooling circulation loop is formed. In addition, the cooling system of the present embodiment is with high heat dissipation efficiency and strong cooling capacity, and the highest heat dissipation power can reach 170KW.
At the same time, the cooling circulation loop of the cooling system of the present embodiment is as follows: the hydrogen fuel cell is communicated with a circulation water pump 2 through a pipe D. One end of the cooling device is communicated with the circulation water pump 2 through a pipe B and a pipe C, and the other end of the cooling device is communicated with hydrogen fuel cell through a pipe A and a pipe E, forming a cooling circulation loop. The coolant above a set temperature value is cooled to the set temperature value through the cooling circulation loop, and then flows into the hydrogen fuel cell. The heat generated during the proper functioning of the hydrogen fuel cell is immediately dissipated, the coolant is controlled at the set temperature. It ensures the proper functioning of the hydrogen fuel cell, improves the reaction efficiency of the hydrogen fuel cell, and prolongs the services life of the hydrogen fuel cell.
In addition, the heating circulation loop is as follows: the hydrogen fuel cell is communicated with the circulation water pump 2 through the pipe D. The pipe B
and the pipe E are communicated through a pipe F. The pipe F is provided with the electric heating tube 12, the coolant flowing in through one end of the pipe F is heated by the electric heating tube 12, and the coolant heated flows into the hydrogen fuel cell from the other end of the pipe F. And the heating circulation loop is formed. In the present embodiment, the coolant below the set temperature value is heated to the set temperature value by the heating circulation loop and then flows into the hydrogen fuel cell. The heating circulation q loop is mainly used for the situation that the hydrogen fuel power tram just starts up or the ambient temperature is too low. The hydrogen fuel cell cannot function properly due to the temperature coolant being too low. Therefore, the heating circulation loop is used for heating the coolant, improving the reaction efficiency of the hydrogen fuel cell.
Further, the cooling system also comprises a controller, and the controller is respectively connected with the circulation device and cooling device.
Preferably, the circulation device comprises the circulation water pump 2 and a water pump controller 3. The water pump controller is connected with and controls the circulation water pump 2. The cooling device comprises a cooling fan 4 and a cooling fan controller 5. The cooling fan controller 5 is connected with and controls the cooling fan 4.
The water pump controller 3 and the cooling fan controller 5 are respectively connected with the controller.
Specifically, the controller acquires the information of the hydrogen fuel cell 1, the temperature sensor and the pressure sensor, and adjusts the circulation device, cooling device and the electric heating tube 12 of the cooling system according to the information acquired. It realizes that the temperature of the coolant, flowing into the hydrogen fuel cell 1, of the cooling system is controlled to be within the optimal reaction temperature range.
Wherein, the controller performs the signal interaction with the water pump controller 3 connecting with the circulation water pump 2, realizing the precise control of the flow rate or flux of the circulation water pump 2. The controller also performs the signal interaction with the cooling fan controller 5 connecting with the cooling fan 4, realizing the precise control of the frequency of the cooling fan 4. And then it realizes the precise control of the cooling system.
For example, when the temperature of the coolant is relative high, the flow rate or the flux of the circulation water pump 2 is decreased and the frequency of the cooling fan 4 is increased at the same time; or the flow rate or the flux of the circulation water pump 2, and the frequency of the cooling fan 4 are increased at the same time. It ensures the temperature of the coolant after cooling is within the optimal reaction temperature range, then ensures the working efficiency of the hydrogen fuel cell, and prolongs the services life of the hydrogen fuel cell.
Further, the cooling system also comprises a water supply tank 6. The water supply tank 6 is communicated with the cooling circulation loop through the pipe.
Preferably, one end of the pipe is communicated with the water supply tank 6, the other end is communicated with the pipe between the circulation water pump 2 and the hydrogen fuel cell.
Specifically, the water supply tank 6 is communicated, through a pipe G, with the pipe D between the circulation water pump 2 and the hydrogen fuel cell. The water supply tank 6 is arranged above the cooling circulation loop, so that it ensures that the water inside the water supply tank 6 can flow into the cooling circulation loop under the action of the gravity or the suction of the water pump. Or, the water in the water supply tank 6 flows into the cooling circulation loop from the water supply tank 6 under the action of the circulation water pump 2.
And, the diameter of the pipe G is smaller than the diameter of the pipe D.
At the same time, the pipe G is also provided with a water supply valve, the on-off of the pipe D is controlled by the water supply valve.
Or, the water supply valve is connected with the controller, the opening and closing of the water supply valve is controlled by the controller.
Further, the cooling system also comprises at least two temperature sensors which are respectively arranged between the hydrogen fuel cell and the cooling device, and between the circulation water pump 2 and the cooling device.
Preferably, the temperature sensor is connected with the controller.
Specifically, the cooling system comprises a first temperature sensor 7 arranged at the pipe A, and a second temperature sensor 9 arranged at the pipe B. The first temperature sensor 7 and the second temperature sensor 9 are respectively connected with the controller.
Further, the cooling system also comprises a three-way valve 13 connected with the controller. The three-way valve 13 is respectively communicated with the electric heating tube 12, the hydrogen fuel cell and the cooling device, and is used for the switch between the cooling circulation loop and the heating circulation loop.
Specifically, the cooling system comprises the first temperature sensor 7 arranged on a liquid inlet side of the hydrogen fuel cell, and the second temperature sensor 9 arranged on a liquid outlet side of the hydrogen fuel cell. The first temperature sensor 7 and the second temperature sensor 9 are respectively connected with the controller.
The controller controls flow rare or flux of the circulation water pump 2, and the frequency of the cooling fan 4 based on the value of the temperature differences between the first temperature sensor 7 and the second temperature sensor 9. Wherein, the value of the temperature differences between the first temperature sensor 7 and the second temperature sensor 9 corresponds to the operation parameters of the circulation water pump 2 and the cooling fan 4, and the corresponding relationship is stored in the controller.
At the same time, the controller of the cooling system of the present embodiment acquires the temperature feedback signals of the first temperature sensor 7 and the second temperature sensor 9, then controlling the opening and the closing of the three-way valve 13. For example, the second temperature sensor 9 acquires the current temperature value of the coolant in the pipe A. When the current temperature value is smaller than the set temperature value, the three-way valve 13 is controlled to communicate the pipe F and the pipe E, and the electric heating tube 12 is turned on at the same time, so that the coolant circulates in the heating circulation loop. When the current temperature value is larger than the set temperature value, the three-way valve 13 is controlled to communicate the pipe A and pipe E, the cooling device is turned on at the same time, so that the coolant circulates in the cooling circulation loop. In the present embodiment, it realizes the switch between the cooling circulation loop and the heating circulation loop. The cooling system can precisely and stably control the coolant flowing into the hydrogen fuel cell to be at the set temperature, improving the input efficiency of the hydrogen fuel cell and saving energy.
Preferably, the set temperature of the present embodiment is 60 C.
Or, the pipe A and the pipe F are respectively provided with a first value and a second valve. The first valve and the second valve are respectively connected with the controller, being used for the switch between the cooling circulation loop and the heating circulation loop.
Further, the water supply tank 6 is provided with an air-exhaust opening. The position of the air-exhaust opening is higher than the position corresponding to the maximum water level of the water supply tank 6. The air-exhaust opening is communicated with the cooling circulation loop through an air-exhaust pipe.
Preferably, one end of the air-exhaust pipe is communicated with the air-exhaust opening, and the other end is communicated with the cooling device.
More preferably, the air-exhaust pipe is provided with an air-exhaust valve 11.
And, the diameter of the air-exhaust pipe is smaller than the diameter of the pipe of the circulation loop. Therefore, the diameter of the air-exhaust pipe is smaller than the diameter of the pipe A, pipe B, pipe C, pipe D, pipe E and pipe F.
Specifically, in the present embodiment, the excess air in the cooling circulation loop is exhausted by opening the air-exhaust valve and using the air-exhaust pipe, ensuring the cooling effect of the cooling system. And the pressure of the cooling circulation loop is reduced by exhausting the excess air in the cooling circulation loop, further ensuring the running safety of the cooling system. At the same time, the cooling device also comprises a heat sink for the sufficiently contact of the coolant with the cooling device to dissipate heat. The air-exhaust pipe is communicated with the heat sink, sufficiently exhausting the excess air in the cooling circulation loop.
Or, the air-exhaust valve 11 of the present embodiment is connected with the controller, and the opening and closing of the air-exhaust valve 11 is controlled by the controller.
Or, the opening and closing of the air-exhaust valve 11 is controlled by the controller according to the pressure value of a first pressure sensor 8, or the pressure value of a second pressure sensor 10, or the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10.
Further, the cooling system also comprises at least two pressure sensors which are connected with the controller.
Preferably, the cooling system also comprises the first pressure sensor 8 arranged on the liquid inlet side of the hydrogen fuel cell, and the second pressure sensor 10 arranged on the liquid outlet side of the hydrogen fuel cell.
Specifically, the cooling system comprises the first pressure sensor 8 arranged between the hydrogen fuel cell and the cooling device, and the second pressure sensor 10 arranged between the circulation water pump 2 and the cooling device. The first pressure sensor 8 and the second pressure sensor 10 are respectively connected with the controller.
The first pressure sensor 8 is arranged on the pipe A, and the second pressure sensor 10 is arranged on the pipe B. The operation parameters of the circulation water pump 2, cooling fan 4 and the electric heating tube 12 are controlled by the controller according to the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10. Specifically, the operation parameter of the circulation water pump 2 is mainly the flow rate or flux, the operation parameter of the cooling fan 12 is mainly the frequency, and the operation parameter of the electric heating tube 12 is mainly the heating power.
Wherein, the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10 corresponds to the operation parameters of the circulation water pump 2, cooling fan 4 or the electric heating tube 12, and the corresponding relationship are stored in the controller.
Besides, in the present embodiment, the excess air in the cooling circulation loop/heating circulation loop is exhausted by the air-exhaust pipe, ensuring the cooling effect of' the cooling system. And the pressure in the circulation loop is reduced by exhausting the excess air in the circulation loop, further ensuring the running safety of the cooling system.
Further, the cooling device also comprises the heat sink for sufficiently contact of the coolant with the cooling device to dissipate heat. The air-exhaust pipe is communicated with the heat sink, sufficiently exhausting the excess air in the cooling circulation loop.
Further, the cooling system also comprises an ionic concentration detecting device 14.
The ionic concentration detecting device 14 is arranged in the cooling circulation loop/heating circulation loop, and is connected with the controller.
Preferably, the ionic concentration detecting device 14 is arranged between the cooling device and the hydrogen fuel cell.
Further, the cooling system also comprises a deionization device 15 and the water supply tank 6 which is communicated with the cooling circulation loop/heating circulation loop through the pipe. One end of the deionization device 15 is communicated with the cooling circulation loop/heating circulation loop through the pipe, and the other end is communicated with the water supply tank 6.
Preferably. the deionization device 15 is a deionization filter.
Specifically, one end of the deionization device 15 is communicated with the pipe B
through the pipe H, and the other end is communicated with water supply tank 6 through the pipe H. The opening which makes water supply tank 6 communicate with the pipe H is arranged on the top of the water supply tank 6. The coolant deionized by the deionization device 15 flows into the water supply tank 6, and the water supply tank 6 is communicated with pipe D through the pipe G, so that the deionizing circulation loop is realized. The diameter of the pipe H is smaller than the diameter of the pipe of the circulation loop.
Specifically, the diameter of the pipe H is smaller than the diameter of the pipe A, pipe B, pipe C, pipe D, pipe E and pipe F, which reduces the resistance of the coolant flowing through the deionization device 15. In the present embodiment, the deionizing circulation loop can effectively control the ionic concentration of the coolant in the circulation loop, and avoid the problem that excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
Besides, in the present embodiment, the ionic concentration of the coolant in the circulation loop is monitored and fed back in real time by the ionic concentration detecting device 14. Or, it can also be monitored and controlled in real time. The controller prompts to replace the filter element of the deionization device 15, and effectively reduces the ionic concentration of the coolant, when the ionic concentration is larger than the set value, Or, the pipe H is provided with a valve. The valve is arranged between the deionization device 15 and the circulation loop, and is closed when replacing the filter element of the deionization device 15. Wherein, the valve is connected with the controller, and the on-off of the pipe H is controlled by the controller.
Further, in the present embodiment, the pipe A is also provided with a water-supplying/water-discharging opening, and is communicated with the water-supplying/water-discharging opening through the pipe which is provided with a water-supplying/water-discharging valve 16, so that the coolant in the cooling circulation loop/heating circulation loop can be effectively supplied or discharged.
In summary, the cooling system of the present embodiment has the following advantages:
1. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment realizes that the hydrogen fuel cell is at a stable reaction environment. In the present embodiment, the hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming the cooling circulation loop. The cooling system also comprises an electric heating tube 12, one end of the electric heating tube 12 is communicated with the circulation device through the pipe, and the other end is communicated with the hydrogen fuel cell through the pipe, forming the heating circulation loop. The cooling circulation loop and the heating circulation loop are switched based on the temperature of the coolant in the pipe, so that the hydrogen fuel cell is at a relatively stable reaction environment and the reaction efficiency of the hydrogen fuel cell is improved.
2. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment is provided with the deionizing circulation loop outside the circulation loop.
The coolant deionized by the deionization device 15 flows to the water supply tank 6, and then flows back to the circulation loop through the water supply loop. It can effectively control the ionic concentration of the coolant in the circulation loop, and can avoid the problem that the excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
3. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment further communicates the cooling device and the water supply tank 6 through the air-exhaust pipe, exhausting the air in the circulation loop. It ensures the cooling effect of the cooling system. And the pressure in the circulation loop is reduced by exhausting the excess air in the circulation loop, further ensuring the running safety of the cooling system.
As described above, a similar technical solution can be derived in combination with the presented solution content. But any and all modifications, equivalents, and modifications of the foregoing embodiments are within the scope of the present disclosure without departing from the spirit of the technical solution of the present disclosure in accordance with the technical details of the present disclosure.
According to one aspect of the present invention, there is provided a cooling system of a fuel cell of a hydrogen energy tram, comprising a hydrogen fuel cell, a circulation device, a cooling device and an electric heating tube, wherein, the hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming a cooling circulation loop; one end of the electric heating tube is communicated with the circulation device through a pipe, and another end of the electric heating tube is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop; the cooling system of the fuel cell of the hydrogen energy tram further comprises at least two temperature sensors, the temperature sensors are connected with the controller.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a structural diagram of a cooling system of a fuel cell of the hydrogen energy tram of the present disclosure.
As shown in Fig. 1, 1. hydrogen fuel cell 2. circulation water pump 3. water pump controller 4. cooling fan 5. cooling fan controller 6. water supply tank 7.
first temperature sensor 8. first pressure sensor 9. second temperature sensor 10. second pressure sensor 11. air-exhaust valve 12. electric heating tube 13. three-way valve 14. ionic concentration detecting device 15. deionization device 16. water-supplying/water-discharging valve.
DETAILED DESCRIPTION
To make the above objects, features and advantages of the present disclosure clearer and easier to understand, the following is further described in details with the present disclosure with accompanying drawings and embodiments.
As shown in Fig. 1, the present disclosure provides a cooling system of a fuel cell of a hydrogen energy tram, which comprises a cooling circulation loop formed by sequentially connecting a hydrogen fuel cell 1, a circulation device and a cooling device through pipes.
The cooling system further comprises an electric heating tube 12. One end of the electric heating tube 12 is communicated with the circulation device through the pipe, and the Date Recue/Date Received 2021-03-24 other end is communicated with the hydrogen fuel cell 1 through pipe, so that the heating circulation loop is formed.
Specifically, the hydrogen fuel cell 1 of the present embodiment generates electric energy, using hydrogen to react with the oxygen in the air under the action of the catalyst to generate electricity and water, thereby providing a green and environmentally friendly power source for the tram. Wherein, the cooling system cools the hydrogen fuel cell 1 by 5a Date Recue/Date Received 2021-03-24 the cooling circulation loop, so that the heat generated during the proper functioning of the hydrogen fuel cell 1 is immediately dissipated. And it can control the coolant inside the cooling circulation loop to enter into the hydrogen fuel cell 1 at a constant temperature, improving the reaction efficiency of the hydrogen fuel cell 1. The high-temperature coolant in the cooling system, discharged from the hydrogen fuel cell 1 is pumped by the circulation device into the cooling device for cooling, the coolant after the cooling is then pumped into the hydrogen fuel cell 1, and is cooled, and the cooling circulation loop is formed. In addition, the cooling system of the present embodiment is with high heat dissipation efficiency and strong cooling capacity, and the highest heat dissipation power can reach 170KW.
At the same time, the cooling circulation loop of the cooling system of the present embodiment is as follows: the hydrogen fuel cell is communicated with a circulation water pump 2 through a pipe D. One end of the cooling device is communicated with the circulation water pump 2 through a pipe B and a pipe C, and the other end of the cooling device is communicated with hydrogen fuel cell through a pipe A and a pipe E, forming a cooling circulation loop. The coolant above a set temperature value is cooled to the set temperature value through the cooling circulation loop, and then flows into the hydrogen fuel cell. The heat generated during the proper functioning of the hydrogen fuel cell is immediately dissipated, the coolant is controlled at the set temperature. It ensures the proper functioning of the hydrogen fuel cell, improves the reaction efficiency of the hydrogen fuel cell, and prolongs the services life of the hydrogen fuel cell.
In addition, the heating circulation loop is as follows: the hydrogen fuel cell is communicated with the circulation water pump 2 through the pipe D. The pipe B
and the pipe E are communicated through a pipe F. The pipe F is provided with the electric heating tube 12, the coolant flowing in through one end of the pipe F is heated by the electric heating tube 12, and the coolant heated flows into the hydrogen fuel cell from the other end of the pipe F. And the heating circulation loop is formed. In the present embodiment, the coolant below the set temperature value is heated to the set temperature value by the heating circulation loop and then flows into the hydrogen fuel cell. The heating circulation q loop is mainly used for the situation that the hydrogen fuel power tram just starts up or the ambient temperature is too low. The hydrogen fuel cell cannot function properly due to the temperature coolant being too low. Therefore, the heating circulation loop is used for heating the coolant, improving the reaction efficiency of the hydrogen fuel cell.
Further, the cooling system also comprises a controller, and the controller is respectively connected with the circulation device and cooling device.
Preferably, the circulation device comprises the circulation water pump 2 and a water pump controller 3. The water pump controller is connected with and controls the circulation water pump 2. The cooling device comprises a cooling fan 4 and a cooling fan controller 5. The cooling fan controller 5 is connected with and controls the cooling fan 4.
The water pump controller 3 and the cooling fan controller 5 are respectively connected with the controller.
Specifically, the controller acquires the information of the hydrogen fuel cell 1, the temperature sensor and the pressure sensor, and adjusts the circulation device, cooling device and the electric heating tube 12 of the cooling system according to the information acquired. It realizes that the temperature of the coolant, flowing into the hydrogen fuel cell 1, of the cooling system is controlled to be within the optimal reaction temperature range.
Wherein, the controller performs the signal interaction with the water pump controller 3 connecting with the circulation water pump 2, realizing the precise control of the flow rate or flux of the circulation water pump 2. The controller also performs the signal interaction with the cooling fan controller 5 connecting with the cooling fan 4, realizing the precise control of the frequency of the cooling fan 4. And then it realizes the precise control of the cooling system.
For example, when the temperature of the coolant is relative high, the flow rate or the flux of the circulation water pump 2 is decreased and the frequency of the cooling fan 4 is increased at the same time; or the flow rate or the flux of the circulation water pump 2, and the frequency of the cooling fan 4 are increased at the same time. It ensures the temperature of the coolant after cooling is within the optimal reaction temperature range, then ensures the working efficiency of the hydrogen fuel cell, and prolongs the services life of the hydrogen fuel cell.
Further, the cooling system also comprises a water supply tank 6. The water supply tank 6 is communicated with the cooling circulation loop through the pipe.
Preferably, one end of the pipe is communicated with the water supply tank 6, the other end is communicated with the pipe between the circulation water pump 2 and the hydrogen fuel cell.
Specifically, the water supply tank 6 is communicated, through a pipe G, with the pipe D between the circulation water pump 2 and the hydrogen fuel cell. The water supply tank 6 is arranged above the cooling circulation loop, so that it ensures that the water inside the water supply tank 6 can flow into the cooling circulation loop under the action of the gravity or the suction of the water pump. Or, the water in the water supply tank 6 flows into the cooling circulation loop from the water supply tank 6 under the action of the circulation water pump 2.
And, the diameter of the pipe G is smaller than the diameter of the pipe D.
At the same time, the pipe G is also provided with a water supply valve, the on-off of the pipe D is controlled by the water supply valve.
Or, the water supply valve is connected with the controller, the opening and closing of the water supply valve is controlled by the controller.
Further, the cooling system also comprises at least two temperature sensors which are respectively arranged between the hydrogen fuel cell and the cooling device, and between the circulation water pump 2 and the cooling device.
Preferably, the temperature sensor is connected with the controller.
Specifically, the cooling system comprises a first temperature sensor 7 arranged at the pipe A, and a second temperature sensor 9 arranged at the pipe B. The first temperature sensor 7 and the second temperature sensor 9 are respectively connected with the controller.
Further, the cooling system also comprises a three-way valve 13 connected with the controller. The three-way valve 13 is respectively communicated with the electric heating tube 12, the hydrogen fuel cell and the cooling device, and is used for the switch between the cooling circulation loop and the heating circulation loop.
Specifically, the cooling system comprises the first temperature sensor 7 arranged on a liquid inlet side of the hydrogen fuel cell, and the second temperature sensor 9 arranged on a liquid outlet side of the hydrogen fuel cell. The first temperature sensor 7 and the second temperature sensor 9 are respectively connected with the controller.
The controller controls flow rare or flux of the circulation water pump 2, and the frequency of the cooling fan 4 based on the value of the temperature differences between the first temperature sensor 7 and the second temperature sensor 9. Wherein, the value of the temperature differences between the first temperature sensor 7 and the second temperature sensor 9 corresponds to the operation parameters of the circulation water pump 2 and the cooling fan 4, and the corresponding relationship is stored in the controller.
At the same time, the controller of the cooling system of the present embodiment acquires the temperature feedback signals of the first temperature sensor 7 and the second temperature sensor 9, then controlling the opening and the closing of the three-way valve 13. For example, the second temperature sensor 9 acquires the current temperature value of the coolant in the pipe A. When the current temperature value is smaller than the set temperature value, the three-way valve 13 is controlled to communicate the pipe F and the pipe E, and the electric heating tube 12 is turned on at the same time, so that the coolant circulates in the heating circulation loop. When the current temperature value is larger than the set temperature value, the three-way valve 13 is controlled to communicate the pipe A and pipe E, the cooling device is turned on at the same time, so that the coolant circulates in the cooling circulation loop. In the present embodiment, it realizes the switch between the cooling circulation loop and the heating circulation loop. The cooling system can precisely and stably control the coolant flowing into the hydrogen fuel cell to be at the set temperature, improving the input efficiency of the hydrogen fuel cell and saving energy.
Preferably, the set temperature of the present embodiment is 60 C.
Or, the pipe A and the pipe F are respectively provided with a first value and a second valve. The first valve and the second valve are respectively connected with the controller, being used for the switch between the cooling circulation loop and the heating circulation loop.
Further, the water supply tank 6 is provided with an air-exhaust opening. The position of the air-exhaust opening is higher than the position corresponding to the maximum water level of the water supply tank 6. The air-exhaust opening is communicated with the cooling circulation loop through an air-exhaust pipe.
Preferably, one end of the air-exhaust pipe is communicated with the air-exhaust opening, and the other end is communicated with the cooling device.
More preferably, the air-exhaust pipe is provided with an air-exhaust valve 11.
And, the diameter of the air-exhaust pipe is smaller than the diameter of the pipe of the circulation loop. Therefore, the diameter of the air-exhaust pipe is smaller than the diameter of the pipe A, pipe B, pipe C, pipe D, pipe E and pipe F.
Specifically, in the present embodiment, the excess air in the cooling circulation loop is exhausted by opening the air-exhaust valve and using the air-exhaust pipe, ensuring the cooling effect of the cooling system. And the pressure of the cooling circulation loop is reduced by exhausting the excess air in the cooling circulation loop, further ensuring the running safety of the cooling system. At the same time, the cooling device also comprises a heat sink for the sufficiently contact of the coolant with the cooling device to dissipate heat. The air-exhaust pipe is communicated with the heat sink, sufficiently exhausting the excess air in the cooling circulation loop.
Or, the air-exhaust valve 11 of the present embodiment is connected with the controller, and the opening and closing of the air-exhaust valve 11 is controlled by the controller.
Or, the opening and closing of the air-exhaust valve 11 is controlled by the controller according to the pressure value of a first pressure sensor 8, or the pressure value of a second pressure sensor 10, or the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10.
Further, the cooling system also comprises at least two pressure sensors which are connected with the controller.
Preferably, the cooling system also comprises the first pressure sensor 8 arranged on the liquid inlet side of the hydrogen fuel cell, and the second pressure sensor 10 arranged on the liquid outlet side of the hydrogen fuel cell.
Specifically, the cooling system comprises the first pressure sensor 8 arranged between the hydrogen fuel cell and the cooling device, and the second pressure sensor 10 arranged between the circulation water pump 2 and the cooling device. The first pressure sensor 8 and the second pressure sensor 10 are respectively connected with the controller.
The first pressure sensor 8 is arranged on the pipe A, and the second pressure sensor 10 is arranged on the pipe B. The operation parameters of the circulation water pump 2, cooling fan 4 and the electric heating tube 12 are controlled by the controller according to the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10. Specifically, the operation parameter of the circulation water pump 2 is mainly the flow rate or flux, the operation parameter of the cooling fan 12 is mainly the frequency, and the operation parameter of the electric heating tube 12 is mainly the heating power.
Wherein, the pressure differences value between the first pressure sensor 8 and the second pressure sensor 10 corresponds to the operation parameters of the circulation water pump 2, cooling fan 4 or the electric heating tube 12, and the corresponding relationship are stored in the controller.
Besides, in the present embodiment, the excess air in the cooling circulation loop/heating circulation loop is exhausted by the air-exhaust pipe, ensuring the cooling effect of' the cooling system. And the pressure in the circulation loop is reduced by exhausting the excess air in the circulation loop, further ensuring the running safety of the cooling system.
Further, the cooling device also comprises the heat sink for sufficiently contact of the coolant with the cooling device to dissipate heat. The air-exhaust pipe is communicated with the heat sink, sufficiently exhausting the excess air in the cooling circulation loop.
Further, the cooling system also comprises an ionic concentration detecting device 14.
The ionic concentration detecting device 14 is arranged in the cooling circulation loop/heating circulation loop, and is connected with the controller.
Preferably, the ionic concentration detecting device 14 is arranged between the cooling device and the hydrogen fuel cell.
Further, the cooling system also comprises a deionization device 15 and the water supply tank 6 which is communicated with the cooling circulation loop/heating circulation loop through the pipe. One end of the deionization device 15 is communicated with the cooling circulation loop/heating circulation loop through the pipe, and the other end is communicated with the water supply tank 6.
Preferably. the deionization device 15 is a deionization filter.
Specifically, one end of the deionization device 15 is communicated with the pipe B
through the pipe H, and the other end is communicated with water supply tank 6 through the pipe H. The opening which makes water supply tank 6 communicate with the pipe H is arranged on the top of the water supply tank 6. The coolant deionized by the deionization device 15 flows into the water supply tank 6, and the water supply tank 6 is communicated with pipe D through the pipe G, so that the deionizing circulation loop is realized. The diameter of the pipe H is smaller than the diameter of the pipe of the circulation loop.
Specifically, the diameter of the pipe H is smaller than the diameter of the pipe A, pipe B, pipe C, pipe D, pipe E and pipe F, which reduces the resistance of the coolant flowing through the deionization device 15. In the present embodiment, the deionizing circulation loop can effectively control the ionic concentration of the coolant in the circulation loop, and avoid the problem that excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
Besides, in the present embodiment, the ionic concentration of the coolant in the circulation loop is monitored and fed back in real time by the ionic concentration detecting device 14. Or, it can also be monitored and controlled in real time. The controller prompts to replace the filter element of the deionization device 15, and effectively reduces the ionic concentration of the coolant, when the ionic concentration is larger than the set value, Or, the pipe H is provided with a valve. The valve is arranged between the deionization device 15 and the circulation loop, and is closed when replacing the filter element of the deionization device 15. Wherein, the valve is connected with the controller, and the on-off of the pipe H is controlled by the controller.
Further, in the present embodiment, the pipe A is also provided with a water-supplying/water-discharging opening, and is communicated with the water-supplying/water-discharging opening through the pipe which is provided with a water-supplying/water-discharging valve 16, so that the coolant in the cooling circulation loop/heating circulation loop can be effectively supplied or discharged.
In summary, the cooling system of the present embodiment has the following advantages:
1. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment realizes that the hydrogen fuel cell is at a stable reaction environment. In the present embodiment, the hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming the cooling circulation loop. The cooling system also comprises an electric heating tube 12, one end of the electric heating tube 12 is communicated with the circulation device through the pipe, and the other end is communicated with the hydrogen fuel cell through the pipe, forming the heating circulation loop. The cooling circulation loop and the heating circulation loop are switched based on the temperature of the coolant in the pipe, so that the hydrogen fuel cell is at a relatively stable reaction environment and the reaction efficiency of the hydrogen fuel cell is improved.
2. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment is provided with the deionizing circulation loop outside the circulation loop.
The coolant deionized by the deionization device 15 flows to the water supply tank 6, and then flows back to the circulation loop through the water supply loop. It can effectively control the ionic concentration of the coolant in the circulation loop, and can avoid the problem that the excessive ionic concentration of the coolant in the cooling system may affect the service life of the reaction exchange membrane of the fuel cell.
3. The cooling system of the fuel cell of the hydrogen energy tram of the present embodiment further communicates the cooling device and the water supply tank 6 through the air-exhaust pipe, exhausting the air in the circulation loop. It ensures the cooling effect of the cooling system. And the pressure in the circulation loop is reduced by exhausting the excess air in the circulation loop, further ensuring the running safety of the cooling system.
As described above, a similar technical solution can be derived in combination with the presented solution content. But any and all modifications, equivalents, and modifications of the foregoing embodiments are within the scope of the present disclosure without departing from the spirit of the technical solution of the present disclosure in accordance with the technical details of the present disclosure.
Claims (15)
1. A cooling system of a fuel cell of a hydrogen energy tram, comprising a hydrogen fuel cell, a circulation device, a cooling device and an electric heating tube, wherein, the hydrogen fuel cell, the circulation device and the cooling device are connected in turn through pipes, forming a cooling circulation loop;
one end of the electric heating tube is communicated with the circulation device through a pipe, and another end of the electric heating tube is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop;
the cooling system of the fuel cell of the hydrogen energy tram further comprises at least two temperature sensors, the temperature sensors are connected with the controller.
one end of the electric heating tube is communicated with the circulation device through a pipe, and another end of the electric heating tube is communicated with the hydrogen fuel cell through a pipe, forming a heating circulation loop;
the cooling system of the fuel cell of the hydrogen energy tram further comprises at least two temperature sensors, the temperature sensors are connected with the controller.
2. The cooling system of the fuel cell of the hydrogen energy tram according to claim 1, further comprising a controller, wherein, the controller is respectively connected with the circulation device and the cooling device.
3. The cooling system of the fuel cell of the hydrogen energy tram according to claim 2, further comprising a water supply tank, wherein, the water supply tank is communicated with the cooling circulation loop through a pipe.
4. The cooling system of the fuel cell of the hydrogen energy tram according to claim 2, further comprising a three-way valve, wherein, the three-way valve is respectively connected with the electric heating tube, the hydrogen fuel cell and the cooling device.
5. The cooling system of the fuel cell of the hydrogen energy tram according to claim 2, further comprising an ionic concentration detecting device, wherein, the ionic concentration detecting device is arranged in the cooling circulation loop/heating circulation loop, and is connected with the controller.
6. The cooling system of the fuel cell of the hydrogen energy tram according to claim 3, further comprising a deionization device, wherein, one end of the deionization device Date Recue/Date Received 2021-03-24 is communicated with the cooling circulation loop/heating circulation loop through a pipe, and another end of the deionization device is communicated with the water supply tank through a pipe.
7. The cooling system of the fuel cell of the hydrogen energy tram according to claim 6, wherein, the deionization device is a deionization filter.
8. The cooling system of the fuel cell of the hydrogen energy tram according to claim 3, wherein, the water supply tank is provided with an air-exhaust opening, a position of the air-exhaust opening is higher than a position corresponding to a maximum water level of the water supply tank, the air-exhaust opening is communicated with the cooling circulation loop through an air-exhaust pipe.
9. The cooling system of the fuel cell of the hydrogen energy tram according to claim 2, wherein, the circulation device comprises a circulation water pump and a water pump controller connected with the circulation water pump, the cooling device comprises a cooling fan and a cooling fan controller connected with the cooling fan, the water pump controller and the cooling fan controller are respectively connected with the controller.
10. The cooling system of the fuel cell of the hydrogen energy tram according to claim 3, wherein, one end of the pipe is connected with the water supply tank, and another end of the pipe is communicated with a pipe between the circulation water pump and the hydrogen fuel cell.
11. The cooling system of the fuel cell of the hydrogen energy tram according to claim 1, wherein, the cooling system further comprises a first temperature sensor arranged between the hydrogen fuel cell and the cooling device, and a second temperature sensor arranged between the circulation water pump and the cooling device.
12. The cooling system of the fuel cell of the hydrogen energy tram according to claim 4, wherein, the three-way valve is connected with the controller, and is controlled by the controller for a switch between the cooling circulation loop and the heating circulation loop.
Date Recue/Date Received 2021-03-24
Date Recue/Date Received 2021-03-24
13. The cooling system of the fuel cell of the hydrogen energy tram according to claim 5, wherein, the ionic concentration detecting device is arranged between the cooling device and the hydrogen fuel cell.
14. The cooling system of the fuel cell of the hydrogen energy tram according to claim 8, wherein, one end of the air-exhaust pipe is communicated with the air-exhaust opening, and another end of the air-exhaust pipe is communicated with the cooling device.
15. The cooling system of the fuel cell of the hydrogen energy tram according to claim 8, wherein, the air-exhaust pipe is provided with an air-exhaust valve.
Date Recue/Date Received 2021-03-24
Date Recue/Date Received 2021-03-24
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780587.1 | 2016-08-31 | ||
| CN201610780587.1A CN106328971B (en) | 2016-08-31 | 2016-08-31 | Cooling system of hydrogen energy tramcar fuel cell |
| PCT/CN2017/099407 WO2018041085A1 (en) | 2016-08-31 | 2017-08-29 | Cooling system for hydrogen energy fuel cell of tram |
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| Publication Number | Publication Date |
|---|---|
| CA3033231A1 CA3033231A1 (en) | 2018-03-08 |
| CA3033231C true CA3033231C (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3033231A Active CA3033231C (en) | 2016-08-31 | 2017-08-29 | Cooling system of fuel cell of hydrogen energy tram |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN106328971B (en) |
| CA (1) | CA3033231C (en) |
| DE (1) | DE112017003360T5 (en) |
| WO (1) | WO2018041085A1 (en) |
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| CN201360026Y (en) * | 2008-12-22 | 2009-12-09 | 新源动力股份有限公司 | Cooling system for prolonging life cycle of cooling water of fuel cell |
| JP5564916B2 (en) * | 2009-12-01 | 2014-08-06 | パナソニック株式会社 | Fuel cell system |
| CN102496730A (en) * | 2011-11-24 | 2012-06-13 | 新源动力股份有限公司 | Thermal management system for low temperature starting of fuel cell power generation system and method thereof |
| CN102610838B (en) * | 2012-03-22 | 2014-10-15 | 中国东方电气集团有限公司 | Thermal management system of fuel cell, fuel cell system, and vehicle with the fuel cell system |
| DE102012024860A1 (en) * | 2012-12-19 | 2014-06-26 | Audi Ag | Method for operating a fuel cell system |
| CN104934619B (en) * | 2015-04-30 | 2017-07-21 | 西南交通大学 | A kind of water-cooling type Proton Exchange Membrane Fuel Cells heat management system and its control method |
| CN106328971B (en) * | 2016-08-31 | 2020-01-10 | 中车青岛四方机车车辆股份有限公司 | Cooling system of hydrogen energy tramcar fuel cell |
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| CN106328971B (en) | 2020-01-10 |
| WO2018041085A1 (en) | 2018-03-08 |
| DE112017003360T5 (en) | 2019-03-21 |
| CA3033231A1 (en) | 2018-03-08 |
| CN106328971A (en) | 2017-01-11 |
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