CN213988943U - Fuel cell thermal management system containing hydrogen-air heat exchanger - Google Patents
Fuel cell thermal management system containing hydrogen-air heat exchanger Download PDFInfo
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- CN213988943U CN213988943U CN202022701760.9U CN202022701760U CN213988943U CN 213988943 U CN213988943 U CN 213988943U CN 202022701760 U CN202022701760 U CN 202022701760U CN 213988943 U CN213988943 U CN 213988943U
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- 239000000446 fuel Substances 0.000 title claims abstract description 87
- 239000001257 hydrogen Substances 0.000 claims abstract description 103
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 103
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims description 33
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 11
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 239000012495 reaction gas Substances 0.000 abstract 1
- 239000000110 cooling liquid Substances 0.000 description 16
- 238000007726 management method Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
Abstract
The utility model discloses a contain empty heat exchanger's of hydrogen fuel cell thermal management system, including fuel electric pile, air compressor machine, hydrogen jar and hydrogen-air heat exchanger, the air compressor machine and hydrogen jar are connected respectively to the air inlet at the relative both ends of hydrogen-air heat exchanger, and the air inlet of fuel electric pile is connected through the negative pole intercooler to the gas outlet of hydrogen-air heat exchanger one end wherein, and the gas outlet of the hydrogen-air heat exchanger other end passes through the air inlet that hydrogen injection apparatus connects the fuel electric pile. The utility model discloses a fuel cell system is normal during operation, and the compressed air after adopting the air compressor machine pressure boost heats hydrogen, prevents that the high humidity hydrogen of low temperature hydrogen backward flow from producing the comdenstion water in galvanic pile entrance and catch water, keeps into galvanic pile medium temperature stability, through the rotational speed of control air compressor machine, can give fast at low temperature and cold start-up in-process and pile hydrogen heating, improves the temperature of piling up reaction gas for the cold start-up speed of system.
Description
Technical Field
The utility model relates to a new energy automobile technical field especially relates to a fuel cell thermal management system who contains hydrogen-empty heat exchanger.
Background
The hydrogen fuel cell stack is a place where hydrogen and oxygen electrochemically react, and mainly functions to generate electricity through the electrochemical reaction, and the product is water. The fuel cell stack is formed by superposing and sealing a certain number of monocells, and the internal structures of the monocells are as follows: the bipolar plate comprises a gas diffusion layer, an electrode, a catalyst layer, a proton exchange membrane, a catalyst layer, an electrode, a gas diffusion layer and a bipolar plate, wherein the two bipolar plates are sealed by a sealing ring. In the working process of the fuel cell stack, pressurized air and hydrogen provided by an air compressor and a hydrogen tank generate electrochemical reaction inside the stack to generate electric energy and generate water. Because the electrochemical reaction in the galvanic pile is carried out on a complex three-phase interface and is influenced by a plurality of factors such as pressure, temperature, humidity and the like, the control of the temperature of the gas entering the galvanic pile has important significance for the performance improvement of the galvanic pile.
Most of the current fuel cell systems for vehicles use non-heating, electric heating or electric pile waste heat heating for supplying hydrogen. The preheating of the hydrogen entering the reactor can ensure that the hydrogen at the inlet of the fuel cell stack has relatively proper temperature, reduce the temperature and energy fluctuation of the heat exchange of the hydrogen inside the electric stack, ensure that the air and the hydrogen entering the reactor directly react at proper temperature, and improve the working efficiency of the system. However, additional energy consumption is needed for electric heating, and certain potential safety hazards exist in the process of electrically heating hydrogen; in addition, the waste heat heating can not play a role in preheating during the cold starting process of the fuel cell system.
In the prior art, the patent name "a fuel cell cold start rapid heating system and method", patent application No. CN201410093593.0, discloses a fuel cell cold start rapid heating system, which includes a hydrogen delivery pipe and a fuel cell stack, the hydrogen delivery pipe delivers hydrogen to a flow channel on the anode side of the fuel cell stack, and is characterized in that: the device also comprises a heater, a temperature detector and a battery control system; the heater is arranged on the hydrogen conveying pipeline and is used for heating the hydrogen; the temperature detector is arranged in the fuel cell stack and used for measuring the temperature of the stack; and the data acquisition end of the battery control system is connected with the temperature detector, the output end of the battery control system is connected with the heater, and the heater is controlled to be turned on or turned off according to the temperature inside the galvanic pile measured by the temperature detector. The invention discloses a cold start rapid heating system of a fuel cell, which is characterized in that a heater is arranged on a hydrogen conveying pipeline to heat hydrogen entering the fuel cell, so that the anode side of the fuel cell can rapidly react at a proper temperature, and redundant heat is conducted to the cathode side of the fuel cell, and the fuel cell can rapidly reach an optimal working state. The fuel cell system has the advantages that the fuel cell system can quickly heat the electric pile during starting, so that the fuel cell system can quickly reach the optimal performance under the condition of low-temperature starting; the disadvantages are that the heating mode needs additional electricity consumption, needs additional heating elements and increases the complexity of the system, and in addition, the electric heating elements have potential safety hazards when heating hydrogen.
Also has the patent name of ' a fuel cell hydrogen heating device ', the patent application number is '
The invention patent of CN201910616489.8 discloses a fuel cell hydrogen heating device, relating to the field of fuel cells; the hydrogen-gas heat exchanger comprises a shell, 2 rows of heat exchange fins, 2n hydrogen gas shunting baffles and a partition plate; the top end of the shell is respectively provided with a heat exchange agent inlet and a heat exchange agent outlet; a hydrogen inlet and a compressed air inlet are formed in the side wall of the shell; a hydrogen outlet and a compressed air outlet are formed in the side wall of the bottom end of the shell; the partition board divides the inner cavity of the shell into a hydrogen cavity and a compressed air cavity; the 2 rows of heat exchange fins are vertically arranged at the centers of the hydrogen cavity and the compressed air cavity in a distributed manner; a row of heat exchange fins are communicated with the heat exchange agent inlet; the other row of heat exchange fins are communicated with a heat exchange agent outlet; the hydrogen diversion baffles are symmetrically arranged in the hydrogen cavity and the compressed air cavity; the invention utilizes the waste heat generated by the fuel cell stack and the system to heat the hydrogen entering from the cold source, the temperature rise is uniform and controllable, dangerous heating modes such as electric heating and the like are avoided, and the hydrogen with higher temperature can be provided for the power generation of the fuel cell. The fuel cell system has the advantages that waste heat generated by the fuel cell stack and the system can be used for heating hydrogen entering from a cold source, so that dangerous elements such as high-temperature hydrogen, no electric heater and the like can be provided for power generation of the fuel cell; the method for heating hydrogen by using the waste heat of the system and the galvanic pile cannot play a role in cold start and low-temperature start, and in addition, the flow resistance of a cooling loop is increased by the flow channel design of the heating device, the model selection difficulty of a water pump is increased, and the ion precipitation of cooling liquid can be increased, so that the performance of the galvanic pile is influenced.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a simple efficient contains hydrogen-empty heat exchanger's fuel cell thermal management system, fuel cell system normal during operation, the hydrogen of compressed air heating system cold source entry after adopting the air compressor machine pressure boost, prevent that low temperature hydrogen from mixing the production comdenstion water with the high humidity hydrogen of catch water back-flow in the galvanic pile entrance, it is stable to keep into galvanic pile medium temperature, avoid low temperature hydrogen to go into to pile and cause the inside heat fluctuation of galvanic pile, rotational speed through the control air compressor machine, can give into pile hydrogen heating fast in low temperature and cold start-up in-process, improve the temperature of reactor gas of going into, accelerate the cold start speed of system.
The utility model discloses take following technical scheme to realize above-mentioned purpose:
a fuel cell heat management system of a hydrogen-air heat exchanger comprises a fuel electric pile, an air compressor, a hydrogen tank and a hydrogen-air heat exchanger, wherein air inlets at two opposite ends of the hydrogen-air heat exchanger are respectively connected with the air compressor and the hydrogen tank, an air outlet at one end of the hydrogen-air heat exchanger is connected with an air inlet of the fuel electric pile through a cathode intercooler, and an air outlet at the other end of the hydrogen-air heat exchanger is connected with an air inlet of the fuel electric pile through a hydrogen injection device.
Preferably, an air stack inlet stop valve is arranged between the cathode intercooler and the fuel electric stack.
Preferably, a hydrogen main shut-off valve is provided between the hydrogen-air heat exchanger and the hydrogen injection device.
Preferably, a back pressure valve is arranged at an air outlet of the fuel electric stack, and the cathode intercooler is connected with an air outlet end of the back pressure valve through the intercooling back bypass valve.
Preferably, the gas outlet of the fuel cell stack is also provided with a gas-water separator, one gas outlet of the gas-water separator is connected with the gas outlet end of the backpressure valve, and the other gas outlet of the gas-water separator is connected with the hydrogen injection device through a hydrogen reflux pump.
Preferably, the opposite ends of the fuel cell stack are further respectively provided with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid outlet is sequentially provided with a deionizer, an expansion water tank, a cooling water pump and a cooling liquid filter which are connected along the direction of the cooling liquid inlet.
Preferably, the cooling liquid outlet of the cooling water pump is also connected with the cooling liquid inlet of the expansion water tank through a cathode intercooler.
Preferably, the coolant outlet is connected in parallel with a three-way valve, a first path of the three-way valve is connected with the coolant inlet of the expansion water tank, a second path of the three-way valve is connected with the coolant inlet of the expansion water tank through the passenger cabin heat exchanger, and a third path of the three-way valve is connected with the coolant inlet of the expansion water tank through the radiator.
Compared with the prior art 1, the utility model discloses do not need energy consumptions such as extra electric heater and probably have the component of potential safety hazard, can also recycle the air compressor machine in addition and turn into some energy consumptions of inner energy, improve the whole energy utilization of system.
Compared with the prior scheme 2, the utility model discloses can give and carry out the auxiliary heating for hydrogen and coolant liquid through changing air compressor machine control mode when the system cold start for the system cold start speed.
The utility model has the advantages that:
the utility model discloses a contain hydrogen-empty heat exchanger's fuel cell thermal management system, fuel cell system normal during operation, the hydrogen of compressed air heating system cold source entry after adopting the air compressor machine pressure boost, prevent that low temperature hydrogen from mixing with the high humidity hydrogen of catch water back flow in galvanic pile entrance and producing the comdenstion water, it is stable to keep into galvanic pile dielectric temperature, it leads to the fact the inside heat of galvanic pile to fluctuate to avoid low temperature hydrogen to go into the pile, through the rotational speed of control air compressor machine, can give into pile hydrogen heating fast in low temperature and cold start-up process, improve the temperature of going into pile reactant gas, accelerate the cold start-up speed of system.
The utility model discloses a contain hydrogen-empty heat exchanger's fuel cell thermal management system adopts gas heat transfer scheme, solves the potential safety hazard that traditional electric heater heating hydrogen exists, simplifies the cooling circuit component, reduces cooling circuit pressure loss and ion and separates out, reduces spare part lectotype cost.
Drawings
Fig. 1 is a schematic structural diagram of a fuel cell thermal management system including a hydrogen-air heat exchanger according to an embodiment of the present invention.
In the figure, 1-fuel electric pile, 2-air compressor, 3-hydrogen tank, 4-hydrogen-air heat exchanger, 5-cathode intercooler, 6-hydrogen injection device, 7-air pile-in stop valve, 8-hydrogen main shut-off valve, 9-back pressure valve, 10-intercooling back bypass valve, 11-gas-water separator, 12-hydrogen reflux pump, 13-deionizer, 14-expansion water tank, 15-cooling water pump, 16-cooling liquid filter, 17-three-way valve, 18-cabin heat exchanger, 19-radiator.
Detailed Description
The present invention will be described in detail with reference to fig. 1 and the following detailed description.
Referring to fig. 1, the present embodiment provides a thermal management system for a fuel cell including a hydrogen-air heat exchanger, including a fuel cell stack 1, an air compressor 2, a hydrogen tank 3 and a hydrogen-air heat exchanger 4, where air inlets at two opposite ends of the hydrogen-air heat exchanger 4 are respectively connected to the air compressor 2 and the hydrogen tank 3, an air outlet at one end of the hydrogen-air heat exchanger 4 is connected to an air inlet of the fuel cell stack 1 through a cathode intercooler 5, and an air outlet at the other end of the hydrogen-air heat exchanger 4 is connected to an air inlet of the fuel cell stack 1 through a hydrogen injection device 6.
In the fuel cell thermal management system including the hydrogen-air heat exchanger according to the present embodiment, the fuel cell stack 1 is a place where the hydrogen gas and the oxygen gas in the air are electrochemically reacted, and the optimum operating temperature is 70 to 90 ℃. The air compressor 2 provides pressurized air for the fuel cell stack 1, the temperature of the pressurized air is high, and the outlet temperature of the air compressor 2 is generally 120-180 ℃ during normal operation. The hydrogen tank 3 provides high-pressure hydrogen for the fuel cell stack 1, and the outlet hydrogen temperature is lower, generally between 0 ℃ and 20 ℃. The hydrogen-air heat exchanger 4 heats low-temperature hydrogen at the outlet of the hydrogen tank 3 by utilizing high-temperature air after being pressurized by the air compressor 2, and simultaneously reduces the temperature of the pressurized air to ensure that the hydrogen entering the reactor directly reacts with the air at the optimal working temperature. The cathode intercooler 5 mainly functions to cool the high-temperature air pressurized by the air compressor 2. And the hydrogen injection device 6 is used for carrying out secondary pressure reduction on the hydrogen subjected to primary pressure reduction and then adjusting the injection frequency to provide hydrogen with required pressure and flow for the fuel cell stack 1.
When the system normally works, air enters the hydrogen-air heat exchanger 4 after being pressurized by the air compressor 2 to perform first cooling heat exchange with cold source hydrogen at the outlet of the hydrogen tank 3, and high-temperature air after the first heat exchange continues to enter the cathode intercooler 5 to perform second cooling heat exchange with coolant and then enters the fuel cell stack 1. The hydrogen flows into the hydrogen-air heat exchanger 4 from the hydrogen tank 3 to exchange heat with high-temperature air to obtain higher temperature, and the preheated hydrogen is decompressed in the hydrogen injection device 6 and then enters the fuel cell stack 1.
When the system is normally started, the temperature of hydrogen and air can be synchronously raised through the regulation of the hydrogen-air heat exchanger 4 in the processes of starting and loading until full-load operation, and when the temperature of the air at the outlet of the hydrogen-air heat exchanger 4 is higher than the upper limit of the reactor entering temperature, the temperature of the hydrogen and the air at the inlet of the galvanic pile is kept relatively stable through the cooling of the cathode intercooler 5.
The utility model discloses a contain hydrogen-empty heat exchanger's fuel cell thermal management system, fuel cell system normal during operation, the hydrogen of compressed air heating system cold source entry after adopting the air compressor machine 2 pressure boost, prevent that low temperature hydrogen from mixing with the high humidity hydrogen of catch water back flow in galvanic pile entrance and producing the comdenstion water, it is stable to keep into galvanic pile dielectric temperature, avoid low temperature hydrogen to go into to pile and cause the inside heat fluctuation of galvanic pile, through control air compressor machine 2's rotational speed, can give into pile hydrogen heating fast in low temperature and cold start-up in-process, improve the temperature of going into pile reactant gas, accelerate the cold start-up speed of system.
Preferably, an air stack inlet shutoff valve 7 is provided between the cathode intercooler 5 and the fuel cell stack 1. The air stacking stop valve 7 plays a role in stopping, sealing and protecting on one hand, and plays a role in back pressure of a cathode loop of the system on the other hand.
As one preferable aspect of the present embodiment, a hydrogen main shut-off valve 8 is provided between the hydrogen-air heat exchanger 4 and the hydrogen gas injection device 6. The hydrogen main shut-off valve 8 functions to protect the fuel cell stack 1 and can quickly shut off the supply of hydrogen.
Preferably, a back pressure valve 9 is provided at an air outlet of the fuel cell stack 1, and the cathode intercooler 5 is connected to an air outlet end of the back pressure valve 9 through an intercooling back bypass valve 10. The intercooling rear bypass valve 10 is used for bypassing the excess air when the air temperature is raised by adjusting the rotation speed of the air compressor 2 in the cold start.
Preferably, a gas-water separator 11 is further provided at the gas outlet of the fuel cell stack 1, one gas outlet of the gas-water separator 11 is connected to the gas outlet end of the back pressure valve 9, and the other gas outlet of the gas-water separator 11 is connected to the hydrogen injection device 6 through a hydrogen reflux pump 12. The gas-water separator 11 separates gas and water discharged from the tail of the anode line. The gas of the hydrogen reflux pump 12 after the water is separated from the anode tail exhaust pumped by the pump and the hydrogen heated by the hydrogen-air heat exchanger 4 is mixed, the tail exhaust gas is recycled, the pollution discharge is reduced, and the resources are reasonably utilized to the maximum extent.
Preferably, in the present embodiment, the opposite ends of the fuel cell stack 1 are respectively provided with a coolant inlet and a coolant outlet, and the coolant outlet is provided with a deionizer 13, an expansion tank 14, a cooling water pump 15, and a coolant filter 16, which are connected in sequence along the direction of the coolant inlet. The deionizer 13 serves to dilute the ion concentration in the coolant. The expansion tank 14 replenishes the entire system with coolant. The cooling water pump 15 supplies the entire system with the cooling liquid. The coolant filter 16 is used to filter impurities in the coolant before it is stacked.
Preferably, in the present embodiment, the coolant outlet of the cooling water pump 15 is also connected to the coolant inlet of the expansion tank 14 via the cathode intercooler 5.
When the system is in cold start, the temperature of cooling liquid and environment is extremely low, the cooling water pump 15 is controlled to reduce the supply of the cooling liquid, the air compressor 2 is controlled to increase the rotating speed in the starting process, the temperature of air after pressurization is increased, and the high-temperature air after pressurization heats the hydrogen of the cold source. In addition, high-temperature air after primary heat exchange can heat part of cooling liquid in the cathode intercooler 5, the temperature of the system cooling liquid is improved, and finally air at the outlet of the cathode intercooler 5 is regulated by the intercooling rear bypass valve 10 to obtain the required flow of the inlet of the galvanic pile. At the moment, the reactor-entering air and the hydrogen are both at higher temperature, so that the heat generated by the reaction of the fuel electric reactor 1 is prevented from being consumed, the fuel electric reactor 1 can quickly reach the normal reaction temperature, and the cold start speed is accelerated.
Preferably, in the present embodiment, the coolant outlet is provided with a three-way valve 17 in parallel, a first path of the three-way valve 17 is connected to the coolant inlet of the expansion tank 14, a second path of the three-way valve 17 is connected to the coolant inlet of the expansion tank 14 through the cabin heat exchanger 18, and a third path of the three-way valve 17 is connected to the coolant inlet of the expansion tank 14 through the radiator 19. The three-way valve 17 is used for shunting the cooling liquid of the fuel cell stack 1 to the cooling liquid outlet, adjusting the cooling large circulation and the cooling small circulation of the whole system, and simultaneously controlling whether the passenger cabin is heated or not. And the cabin heat exchanger 18 is used for recovering the waste heat generated by the operation of the fuel cell stack 1 to supply heat for cabin warm air. The radiator 19 is generally integrated in the entire vehicle, and cools the coolant during a large circulation.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The fuel cell heat management system is characterized by comprising a fuel electric pile (1), an air compressor (2), a hydrogen tank (3) and a hydrogen-air heat exchanger (4), wherein air inlets at two opposite ends of the hydrogen-air heat exchanger (4) are respectively connected with the air compressor (2) and the hydrogen tank (3), an air outlet at one end of the hydrogen-air heat exchanger (4) is connected with an air inlet of the fuel electric pile (1) through a cathode intercooler (5), and an air outlet at the other end of the hydrogen-air heat exchanger (4) is connected with an air inlet of the fuel electric pile (1) through a hydrogen injection device (6).
2. A fuel cell thermal management system including a hydrogen-air heat exchanger according to claim 1, characterized in that an air stack inlet shut-off valve (7) is provided between the cathode intercooler (5) and the fuel cell stack (1).
3. A fuel cell thermal management system comprising a hydrogen-air heat exchanger according to claim 1, characterized in that a hydrogen main shut-off valve (8) is provided between the hydrogen-air heat exchanger (4) and the hydrogen injection means (6).
4. The fuel cell heat management system of the hydrogen-air heat exchanger is characterized in that a back pressure valve (9) is arranged at an air outlet of the fuel cell stack (1), and the cathode intercooler (5) is connected with an air outlet end of the back pressure valve (9) through an intercooling rear bypass valve (10).
5. The fuel cell heat management system of the hydrogen-air heat exchanger is characterized in that a gas-water separator (11) is further arranged at the gas outlet of the fuel cell stack (1), one gas outlet of the gas-water separator (11) is connected with the gas outlet end of the backpressure valve (9), and the other gas outlet of the gas-water separator (11) is connected with the hydrogen injection device (6) through a hydrogen reflux pump (12).
6. The fuel cell heat management system of the hydrogen-air heat exchanger according to claim 1, wherein the fuel cell stack (1) is further provided with a coolant inlet and a coolant outlet at opposite ends thereof, and the coolant outlet is provided with a deionizer (13), an expansion tank (14), a cooling water pump (15) and a coolant filter (16) connected in sequence along the direction of the coolant inlet.
7. A fuel cell thermal management system including a hydrogen-air heat exchanger according to claim 6, characterized in that the coolant outlet of the cooling water pump (15) is further connected to the coolant inlet of the expansion tank (14) through the cathode intercooler (5).
8. The fuel cell heat management system of the hydrogen-air heat exchanger according to claim 6, wherein the coolant outlet is connected in parallel with a three-way valve (17), a first path of the three-way valve (17) is connected with the coolant inlet of the expansion tank (14), a second path of the three-way valve (17) is connected with the coolant inlet of the expansion tank (14) through the cabin heat exchanger (18), and a third path of the three-way valve (17) is connected with the coolant inlet of the expansion tank (14) through the radiator (19).
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| CN202022701760.9U CN213988943U (en) | 2020-11-20 | 2020-11-20 | Fuel cell thermal management system containing hydrogen-air heat exchanger |
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| CN113690461A (en) * | 2021-08-25 | 2021-11-23 | 烟台东德实业有限公司 | Indirect cold start ice breaking system of fuel cell hydrogen loop |
| CN113809356A (en) * | 2021-09-17 | 2021-12-17 | 烟台东德实业有限公司 | Energy-saving fuel cell thermal management system |
| CN114023999A (en) * | 2021-10-14 | 2022-02-08 | 同济大学 | Fuel cell system with quick cold start function and start method thereof |
| CN114024004A (en) * | 2021-10-28 | 2022-02-08 | 三一汽车制造有限公司 | Fuel cell cold start device, control method thereof and vehicle |
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Assignee: Beijing Yuchai Xingshunda New Energy Technology Co.,Ltd. Assignor: Yuchaixinlan New Energy Power Technology Co.,Ltd. Contract record no.: X2024980002254 Denomination of utility model: A Fuel Cell Thermal Management System with Hydrogen Air Heat Exchanger Granted publication date: 20210817 License type: Common License Record date: 20240227 |
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