CN214477561U - Hydrogen energy automobile fuel cell system - Google Patents
Hydrogen energy automobile fuel cell system Download PDFInfo
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- CN214477561U CN214477561U CN202022902928.2U CN202022902928U CN214477561U CN 214477561 U CN214477561 U CN 214477561U CN 202022902928 U CN202022902928 U CN 202022902928U CN 214477561 U CN214477561 U CN 214477561U
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 169
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 169
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 125
- 239000000498 cooling water Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 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
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Abstract
The utility model provides a hydrogen energy automobile fuel cell system, relating to the technical field of fuel cell systems; the fuel cell system comprises an electric pile, an air compressor, a pile outlet throttle valve, a hydrogen cylinder, a voltage inspection module and a controller; the electric pile is provided with an air inlet, an air outlet, a hydrogen inlet, a hydrogen outlet, a hydrogen discharge valve and a drain valve; the stack outlet air throttle is communicated with the air outlet; the air compressor is communicated with the electric pile through an air inlet; a reactor inlet air throttle is arranged between the air compressor and the air inlet; the hydrogen cylinder is communicated with the electric pile through a hydrogen inlet; a pile-entering hydrogen valve is arranged between the hydrogen cylinder and the hydrogen inlet; the pile-entering hydrogen valve is respectively communicated with a hydrogen cylinder and a hydrogen inlet; the controller is respectively electrically connected with the air compressor, the stack inlet air throttle, the stack outlet air throttle, the stack inlet hydrogen valve and the voltage inspection module; the attenuation of the performance of the electric pile can be effectively slowed down.
Description
Technical Field
The utility model relates to a fuel cell system technical field especially relates to a hydrogen energy automobile fuel cell system.
Background
Compared with the electric power energy supply system which is widely adopted at present, the hydrogen energy is used as an energy storage substance in the transportation industry, has the characteristics and advantages of large-scale stable storage, continuous supply, long-distance transportation and quick supplement, and can coexist and complement with the electric power system in an energy framework which is characterized by distributed mode as a main characteristic and zero emission in the future, so that the energy requirements of transportation, family life and industrial production are met together.
A fuel cell is an energy conversion device that converts chemical energy of hydrogen and air (oxygen) into electrical energy by means of an electrochemical reaction. Because the only discharged product is water without a high-temperature combustion process, no pollutant is discharged; meanwhile, as long as the supply of hydrogen can be ensured, the fuel cell can continuously output electric energy. The fuel cell breaks through the efficiency limit of thermodynamic Carnot cycle, breaks through the mode of traditional energy power, and becomes the leading-edge technology of modern technological development. At present, new energy vehicles using fuel cells as power sources have the most remarkable development. Various automobile manufacturers in the world including Toyota, Honda, general and Benz are engaged in the research and development of fuel cell hydrogen energy automobiles and gradually put into the market for mass production.
However, the existing fuel cell hydrogen energy automobile has the problem that the performance of the fuel cell stack is rapidly attenuated, which is one of important factors for restricting the large-scale commercial application of the fuel cell hydrogen energy automobile.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving among the current fuel cell pile because of the not good technical problem who causes of uniformity of each battery cell voltage pile performance decay.
The embodiment of the utility model provides a hydrogen energy automobile fuel cell system, which comprises an electric pile, an air compressor, a pile outlet air throttle, a hydrogen cylinder, a voltage patrol module and a controller;
the electric pile is provided with an air inlet, an air outlet, a hydrogen inlet, a hydrogen outlet, a hydrogen discharge valve and a drain valve; the stack outlet throttle valve is communicated with the air outlet;
the air compressor is communicated with the electric pile through the air inlet; a reactor inlet throttle valve is arranged between the air compressor and the air inlet; the reactor inlet throttle valve is communicated with the air compressor and the air inlet respectively;
the hydrogen cylinder is communicated with the electric pile through the hydrogen inlet; a pile-entering hydrogen valve is arranged between the hydrogen cylinder and the hydrogen inlet; the pile-entering hydrogen valve is respectively communicated with the hydrogen cylinder and the hydrogen inlet;
the controller is respectively electrically connected with the air compressor, the reactor inlet air throttle, the reactor outlet air throttle, the reactor inlet hydrogen valve and the voltage inspection module; the voltage inspection module is used for detecting the voltage of each single battery in the galvanic pile.
In some preferred embodiments, the hydrogen-energy automobile fuel cell system further comprises an intercooler; the intercooler is arranged between the air compressor and the air inlet; the air compressor is communicated with the air inlet through the intercooler.
In some preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a humidifier; the humidifier is disposed between the air compressor and the air intake; the air compressor is communicated with the air inlet through the humidifier; the stack outlet throttle valve is communicated with the air outlet through the humidifier.
In some preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a hydrogen circulation pump; the hydrogen circulating pump is electrically connected with the controller; the hydrogen circulating pump is respectively communicated with the hydrogen outlet and the hydrogen inlet; a one-way valve is arranged between the hydrogen circulating pump and the hydrogen inlet; the one-way valve is respectively communicated with the hydrogen circulating pump and the hydrogen inlet; the hydrogen circulating pump is matched with the one-way valve and used for circulating the unreacted hydrogen in the galvanic pile to the galvanic pile through the hydrogen inlet.
In some preferred embodiments, a pressure reducing valve is further arranged between the hydrogen cylinder and the pile-entering hydrogen valve; the pressure reducing valve is respectively communicated with the hydrogen cylinder and the pile-entering hydrogen valve.
In some preferred embodiments, a proportional valve is further arranged between the stack-entering hydrogen valve and the hydrogen inlet; the proportional valve is respectively communicated with the hydrogen inlet and the pile entering hydrogen valve; the proportional valve is electrically connected with the controller.
In some preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a water tank, and a water pump; the galvanic pile is also provided with a first water inlet and a first water outlet; the water tank is communicated with a water inlet of the water pump through the intercooler; the water outlet of the water pump is communicated with the first water inlet; the water outlet of the water pump is also communicated with the water tank; the first water outlet is communicated with a water inlet of the water pump; the water pump is electrically connected with the controller.
In some more preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a radiator and a thermostat; the radiator is electrically connected with the controller; the thermostat is provided with a second water inlet, a third water inlet and a second water outlet; the water outlet of the water pump is communicated with the second water inlet; the water outlet of the water pump is also communicated with the third water inlet through the radiator; the water tank is communicated with the water outlet of the water pump through the radiator; the second water outlet is communicated with the first water inlet.
In some preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a temperature sensor; the temperature sensor is electrically connected with the controller; the temperature sensor is arranged in the electric pile and used for detecting the temperature of water generated in the electric pile.
In some preferred embodiments, the hydrogen-powered automotive fuel cell system further comprises a DC-DC booster; the DC-DC booster is electrically connected with the galvanic pile and the controller respectively.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the utility model provides a hydrogen energy automobile fuel cell system, which comprises an electric pile, an air compressor, a pile outlet air throttle, a hydrogen cylinder, a voltage patrol module and a controller; the electric pile is provided with an air inlet, an air outlet, a hydrogen inlet, a hydrogen outlet, a hydrogen discharge valve and a drain valve; the stack outlet throttle valve is communicated with the air outlet; the air compressor is communicated with the electric pile through the air inlet; a reactor inlet throttle valve is arranged between the air compressor and the air inlet; the reactor inlet throttle valve is communicated with the air compressor and the air inlet respectively; the hydrogen cylinder is communicated with the electric pile through the hydrogen inlet; a pile-entering hydrogen valve is arranged between the hydrogen cylinder and the hydrogen inlet; the pile-entering hydrogen valve is respectively communicated with the hydrogen cylinder and the hydrogen inlet; the controller is respectively electrically connected with the air compressor, the reactor inlet air throttle, the reactor outlet air throttle, the reactor inlet hydrogen valve and the voltage inspection module; detecting the voltage value of each single battery in the galvanic pile through the voltage patrol module, judging whether the average voltage value of the single batteries is smaller than a first preset threshold value or not through the controller, and simultaneously judging whether the voltage difference value of the single batteries is larger than a second preset threshold value or not; when the average voltage value of the single batteries is smaller than a first preset threshold value or the voltage difference value of the single batteries is larger than a second preset threshold value, the controller controls the rotating speed of the air compressor to be increased to a third preset threshold value; water generated in the electric pile is blown out of the electric pile through the air outlet by suddenly increased air disturbance, so that the situation that the consistency of the voltage of the single battery is influenced by the liquid water condensed due to excessive water vapor in the electric pile is prevented, and the performance attenuation of the electric pile is further slowed down; in addition, when the air compressor reaches the fourth preset threshold with the time that the third preset threshold operated, just the controller judges the average voltage value of battery cell is less than first preset threshold or when the voltage difference value of battery cell is greater than the second preset threshold, the controller control hydrogen energy car fuel cell system stops working to guarantee can't solve through improving the air compressor rotational speed when the problem of battery cell uniformity, through closing hydrogen energy car battery system is in order to reach and slow down the mesh that the pile performance attenuates.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen energy automobile fuel cell system in embodiment 1 of the present invention.
Fig. 2 is a schematic circuit connection diagram of the fuel cell system of the hydrogen-powered automobile in fig. 1.
Fig. 3 is a flowchart of the startup steps in the control method of the fuel cell system of the hydrogen-powered automobile in fig. 1.
Fig. 4 is a flowchart of a control method of the fuel cell system of the hydrogen-powered automobile in fig. 1.
Fig. 5 is a flow chart illustrating the shutdown steps in the control method of the fuel cell system of the hydrogen-powered automobile in fig. 1.
Wherein, 1, an air compressor; 2. an intercooler; 3. a humidifier; 4. a reactor inlet air throttle; 5. a stack outlet air throttle; 6. a water tank; 7. a water pump; 8. a heat sink; 9. a thermostat; 10. a hydrogen gas cylinder; 11. a pressure reducing valve; 12. a pile-entering hydrogen valve; 13. a proportional valve; 14. a hydrogen circulation pump; 15. a one-way valve; 16. a hydrogen discharge valve; 17. a galvanic pile; 18. a voltage inspection module; 19. a DC-DC booster; 20. a controller; 21. a drain valve; 22. a temperature sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a hydrogen energy automobile fuel cell system, which includes an electric pile 17, an air compressor 1, an intercooler 2, a humidifier 3, a stack-entering throttle valve, a stack-exiting throttle valve 5, a hydrogen cylinder 10, a pressure reducing valve 11, a stack-entering hydrogen valve 12, a proportional valve 13, a hydrogen circulating pump 14, a water tank 6, a water pump 7, a radiator 8, a thermostat 9, a DC-DC booster 19, a voltage inspection module 18, and a controller 20.
The controller 20 is an MCU controller, and the controller 20 is respectively electrically connected with the air compressor 1, the stack inlet air throttle 4, the stack outlet air throttle 5, the stack inlet hydrogen valve 12, the proportional valve 13, the hydrogen circulating pump 14, the water pump 7, the radiator 8, the DC-DC booster 19 and the voltage patrol module 18; the voltage inspection module 18 is used for detecting the voltage of each single battery in the electric pile 17.
The electric pile 17 is a PEMFC electric pile, and a plurality of single cells (not shown in the figure) are arranged inside the electric pile 17; the electric pile 17 is provided with an air inlet, an air outlet, a hydrogen inlet, a hydrogen outlet, a hydrogen discharge valve 16 and a drain valve 21; the stack outlet air throttle 5 is communicated with the air outlet; a temperature sensor 22 is arranged inside the electric pile 17 and used for detecting the temperature of water generated in the electric pile 17; the temperature sensor 22 is electrically connected with the controller 20; the hydrogen discharge valve 16 is used for discharging the hydrogen which is not completely reacted in the electric pile 17 to the outside; the drain valve 21 is used to drain water generated in the stack 17 to the outside; the hydrogen discharge valve 16 and the drain valve 21 are electrically connected to the controller 20, respectively.
The air compressor 1 is communicated with the electric pile 17 through the air inlet; an intercooler 2, a humidifier 3 and a reactor inlet air throttle 4 are sequentially arranged between the air compressor 1 and the air inlet; the air compressor 1 is communicated with the electric pile 17 sequentially through the intercooler 2, the humidifier 3, the pile-entering air throttle 4 and the air inlet; the air compressor 1 is matched with the intercooler 2, the humidifier 3, the stack-entering throttle valve 4 and the air inlet to cool the outside air and then transmit the cooled outside air to the electric stack 17.
The stack outlet air throttle 5 is communicated with the air outlet through a humidifier 3; the stack outlet damper 5 is matched with the humidifier 3 and the stack outlet damper 5 to humidify unreacted air in the electric pile 17 through the humidifier 3 and then discharge the air to the outside of the electric pile 17.
The hydrogen cylinder 10 is communicated with the electric pile 17 through the hydrogen inlet; a pressure reducing valve 11, a pile-entering hydrogen valve 12 and a proportional valve 13 are arranged between the hydrogen cylinder 10 and the hydrogen inlet; the pile entering hydrogen valve 12 is communicated with the hydrogen inlet sequentially through a pressure reducing valve 11, the pile entering hydrogen valve 12 and a proportional valve 13; the hydrogen circulating pump 14 is respectively communicated with the hydrogen outlet and the hydrogen inlet; a one-way valve 15 is arranged between the hydrogen circulating pump 14 and the hydrogen inlet; the one-way valve 15 is respectively communicated with the hydrogen circulating pump 14 and the hydrogen inlet; the hydrogen circulating pump 14 is matched with the one-way valve 15 to circulate the unreacted hydrogen in the electric pile 17 to the electric pile 17 through the hydrogen inlet.
Further, a first water inlet and a first water outlet are also arranged on the galvanic pile 17; the thermostat 9 is provided with a second water inlet, a third water inlet and a second water outlet; the water tank 6 is communicated with a water inlet of the water pump 7 through the intercooler 2; the water outlet of the water pump 7 is communicated with the second water inlet; the second water outlet is communicated with the first water inlet; the first water outlet is communicated with a water inlet of the water pump 7, and cooling water in the electric pile 17 is circulated to the water inlet of the water pump 7; the water outlet of the water pump 7 is also communicated with the third water inlet through a radiator 8; the water tank 6 is communicated with the water outlet of the water pump 7 through a radiator 8. The thermostat 9 can open the second water inlet and/or the third water inlet according to a preset temperature threshold; the water pump 7 cools the water in the water tank 6 through the intercooler 2 and then conveys the water to the second water inlet of the radiator 8 and the thermostat 9; part of the cooling water flowing through the water pump 7 is further cooled through a radiator 8 and is conveyed to a third water inlet of the thermostat 9; the thermostat 9 detects the water temperatures of the cooling water of the second water inlet and the third water inlet, and determines to open the second water inlet and/or the third water inlet according to whether the water temperature of the cooling water is lower than a preset temperature threshold; the cooling water flowing through the second water outlet enters the galvanic pile 17 through the first water inlet, so that the galvanic pile 17 is cooled. At the same time, a small portion of the cooling water flowing through the radiator 8 flows back into the water tank 6.
Referring to fig. 3 to 5, the control method of the fuel cell system of the hydrogen powered vehicle in the present embodiment includes the steps of:
starting a hydrogen energy automobile fuel cell system:
t1, the controller 20 judges whether a circuit of the hydrogen energy automobile fuel cell system has a fault; if the fault exists, entering a fault mode; and if no fault exists, controlling the water pump 7 to be started.
Specifically, when the controller 20 determines that the circuit of the fuel cell system of the hydrogen energy automobile has a fault, alarm information including a buzzer or a warning mark may be sent to an instrument panel of the hydrogen energy automobile.
T2, the controller 20 controls the hydrogen discharge valve 16 and the drain valve 21 to be fully opened, and controls the hydrogen circulation pump 14 to be opened.
The normal operation mode of the hydrogen discharge valve 16 and the drain valve 21 is closed for a certain time and then opened for a certain time, the controller 20 controls the full open state of the hydrogen discharge valve 16 and the drain valve 21, and the hydrogen discharge valve 16 and the drain valve 21 are always in the open state.
The T3 and the controller 20 control the stack hydrogen valve 12 and the proportional valve 13 to open, and the hydrogen cylinder 10 supplies hydrogen to the galvanic pile 17 through the pressure reducing valve 11, the stack hydrogen valve 12, the proportional valve 13 and the hydrogen inlet; the residual gas on the anode side in the stack 17 is replaced by the pressure generated at the moment of introducing hydrogen.
T4, when the opening time of the hydrogen valve 12 and the proportional valve 13 reaches a fifth preset threshold, the controller 20 controls the switching frequency of the hydrogen discharge valve 16 to be a sixth preset value and controls the switching frequency of the water discharge valve 21 to be a seventh preset threshold; then controlling the stack inlet air throttle 4 and the air compressor 1 to be opened; in order to more clearly embody the solution of the present embodiment, the rotation speed of the air compressor 1 during normal operation is 20000r/min, and the rotation speeds of the air compressors 1 of different models during normal operation are different.
In this embodiment, the fifth preset threshold is 5 s; as a variation of this embodiment, the fifth preset threshold may also be 4s or 6 s.
Specifically, in the present embodiment, the sixth preset value is closed for 12s and opened for 0.2s, that is, the hydrogen discharge valve 16 is closed for 12s first and then opened for 0.2s, which are performed alternately in sequence.
Specifically, in the present embodiment, the seventh preset value is to close for 8s and open for 0.3s, that is, the drain valve 21 is closed for 8s first and then opened for 0.3s, which are performed alternately in sequence.
The control method in the operation process of the hydrogen energy automobile fuel cell system comprises the following steps:
s1, the voltage inspection module 18 detects the voltage value of each cell in the stack 17, and sends the voltage value to the controller 20.
S2, the controller 20 calculates and determines whether the average voltage value of the single battery in the stack 17 is smaller than a first preset threshold, and determines whether the voltage difference value of the single battery is larger than a second preset threshold; when the average voltage value of the single battery is smaller than a first preset threshold value or the voltage difference value of the single battery is larger than a second preset threshold value, the controller 20 controls the rotating speed of the air compressor 1 to be increased to a third preset threshold value, and water generated in the electric pile 17 is blown to the outside of the electric pile 17 through the air outlet by suddenly generating air disturbance; the phenomenon that the consistency of the voltage of the single battery is influenced by liquid water condensed due to excessive water vapor in the electric pile 17 is prevented, and the performance attenuation of the electric pile 17 is further slowed down.
Specifically, in this embodiment, the first preset threshold is 500 mV; the second preset threshold is 50 mV; as a variation of this embodiment, the first preset threshold may also be 550 mV; the second preset threshold may also be 45mV or 55 mV.
Specifically, in this embodiment, the third preset threshold is 22000 r/min; as a variation of this embodiment, the third preset threshold may also be 26000 r/min.
S3, when the time that the air compressor 1 operates at the third preset threshold reaches a fourth preset threshold and the controller 20 judges that the average voltage value of the single battery is smaller than the first preset threshold or the voltage difference value of the single battery is larger than the second preset threshold, the controller 20 controls the hydrogen energy automobile fuel cell system to stop working; therefore, when the problem of the consistency of the single batteries cannot be solved by increasing the rotating speed of the air compressor 1, the purpose of reducing the performance attenuation of the electric pile 17 by closing the hydrogen energy automobile battery system is achieved.
Specifically, in this embodiment, the fourth preset threshold is 0.5 min; as a variation of this embodiment, the fourth preset threshold may also be 2.5 min.
Further, in step S3, the controller 20 controls the hydrogen-powered automobile fuel cell system to stop operating as follows:
p1, the controller 20 controls the input current of the DC-DC booster 19 to ensure that the average voltage of each single cell in the electric pile 17 is maintained between 770 and 830 mV; the controller 20 controls the switching frequency of the hydrogen discharge valve 16 to be an eighth preset threshold value, controls the switching frequency of the water discharge valve 21 to be a ninth preset threshold value, and then controls the rotation speed of the air compressor 1 to be increased to a tenth preset threshold value.
Specifically, in this embodiment, the eighth preset threshold is closed for 8s and opened for 0.3s, that is, the exhaust valve is closed for 8s first and then opened for 0.3s, which are performed alternately in sequence.
Specifically, in this embodiment, the ninth preset threshold is closed for 4s and opened for 0.3s, that is, the drain valve 21 is closed for 4s first and then opened for 0.3s, which are performed alternately in sequence; as a variation of this embodiment, the ninth preset threshold may also be closed for 6s and opened for 0.3s, that is, the drain valve 21 is closed for 6s first and then opened for 0.3s, which are performed alternately in sequence.
Specifically, in this embodiment, the tenth preset threshold is 25000 r/min; the tenth preset threshold may be 26000r/min as a variation of this embodiment.
P2, when the time for which the air compressor 1 is operated at the tenth preset threshold reaches the eleventh preset threshold, the controller 20 controls the output-input current of the DC-DC booster 19 to 0, and then controls the DC-DC booster 19 to turn off.
Specifically, in this embodiment, the eleventh preset threshold is 1.5 min; as a variation of this embodiment, the first preset threshold may also be 2 min.
P3, controller 20 controls air compressor 1, in-stack damper 4, and out-stack damper 5 to close.
P4, when the controller 20 calculates and judges that the average voltage value of the single batteries is less than the twelfth preset threshold, the controller 20 controls the hydrogen circulation pump 14, the hydrogen discharge valve 16 and the drain valve 21 to close.
Specifically, in this embodiment, the twelfth preset threshold is 180 mV; the twelfth preset threshold may be 220mV as a modification of this embodiment.
P5, controller 20 controls pile hydrogen valve 12 and proportional valve 13 to close.
P6, when the controller 20 judges that the temperature of the water in the cell stack 17 is lower than the thirteenth preset threshold, the water pump 7 and the radiator 8 are controlled to be turned off.
Specifically, in this embodiment, the thirteenth preset threshold is 20 ℃; as a variation of this embodiment, the thirteenth preset threshold may also be 45 ℃.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A fuel cell system of a hydrogen energy automobile is characterized by comprising an electric pile, an air compressor, a pile outlet air throttle, a hydrogen cylinder, a voltage inspection module and a controller;
the electric pile is provided with an air inlet, an air outlet, a hydrogen inlet, a hydrogen outlet, a hydrogen discharge valve and a drain valve; the stack outlet throttle valve is communicated with the air outlet;
the air compressor is communicated with the electric pile through the air inlet; a reactor inlet throttle valve is arranged between the air compressor and the air inlet; the reactor inlet throttle valve is communicated with the air compressor and the air inlet respectively;
the hydrogen cylinder is communicated with the electric pile through the hydrogen inlet; a pile-entering hydrogen valve is arranged between the hydrogen cylinder and the hydrogen inlet; the pile-entering hydrogen valve is respectively communicated with the hydrogen cylinder and the hydrogen inlet;
the controller is respectively electrically connected with the air compressor, the reactor inlet air throttle, the reactor outlet air throttle, the reactor inlet hydrogen valve and the voltage inspection module; the voltage inspection module is used for detecting the voltage of each single battery in the galvanic pile.
2. The hydrogen powered automotive fuel cell system of claim 1, further comprising an intercooler; the intercooler is arranged between the air compressor and the air inlet; the air compressor is communicated with the air inlet through the intercooler.
3. The hydrogen-powered automotive fuel cell system of claim 1, further comprising a humidifier; the humidifier is disposed between the air compressor and the air intake; the air compressor is communicated with the air inlet through the humidifier; the stack outlet throttle valve is communicated with the air outlet through the humidifier.
4. The hydrogen-powered automotive fuel cell system of claim 1, further comprising a hydrogen circulation pump; the hydrogen circulating pump is electrically connected with the controller; the hydrogen circulating pump is respectively communicated with the hydrogen outlet and the hydrogen inlet; a one-way valve is arranged between the hydrogen circulating pump and the hydrogen inlet; the one-way valve is respectively communicated with the hydrogen circulating pump and the hydrogen inlet; the hydrogen circulating pump is matched with the one-way valve and used for circulating the unreacted hydrogen in the galvanic pile to the galvanic pile through the hydrogen inlet.
5. The fuel cell system of claim 1, wherein a pressure reducing valve is further disposed between the hydrogen cylinder and the stack hydrogen valve; the pressure reducing valve is respectively communicated with the hydrogen cylinder and the pile-entering hydrogen valve.
6. The hydrogen-energy automobile fuel cell system as claimed in claim 1, wherein a proportional valve is further arranged between the stack-entering hydrogen valve and the hydrogen inlet; the proportional valve is respectively communicated with the hydrogen inlet and the pile entering hydrogen valve; the proportional valve is electrically connected with the controller.
7. The hydrogen-powered automotive fuel cell system of claim 2, further comprising a water tank, and a water pump; the galvanic pile is also provided with a first water inlet and a first water outlet; the water tank is communicated with a water inlet of the water pump through the intercooler; the water outlet of the water pump is communicated with the first water inlet; the water outlet of the water pump is also communicated with the water tank; the first water outlet is communicated with a water inlet of the water pump; the water pump is electrically connected with the controller.
8. The hydrogen-powered automotive fuel cell system of claim 7, further comprising a radiator and a thermostat; the radiator is electrically connected with the controller; the thermostat is provided with a second water inlet, a third water inlet and a second water outlet; the water outlet of the water pump is communicated with the second water inlet; the water outlet of the water pump is also communicated with the third water inlet through the radiator; the water tank is communicated with the water outlet of the water pump through the radiator; the second water outlet is communicated with the first water inlet.
9. The hydrogen-powered automotive fuel cell system of claim 1, further comprising a temperature sensor; the temperature sensor is electrically connected with the controller; the temperature sensor is arranged in the electric pile and used for detecting the temperature of water generated in the electric pile.
10. The hydrogen powered automotive fuel cell system of claim 1 further comprising a DC-DC booster; the DC-DC booster is electrically connected with the galvanic pile and the controller respectively.
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| CN202022902928.2U CN214477561U (en) | 2020-12-04 | 2020-12-04 | Hydrogen energy automobile fuel cell system |
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| CN202022902928.2U CN214477561U (en) | 2020-12-04 | 2020-12-04 | Hydrogen energy automobile fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563536A (en) * | 2020-12-04 | 2021-03-26 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563536A (en) * | 2020-12-04 | 2021-03-26 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell system and control method thereof |
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Address after: 430000 Building 1, No. 99, Weilai Third Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Grove Hydrogen Energy Technology Group Co.,Ltd. Address before: 430000 Building 1, No. 99, Weilai Third Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN LUOGEFU HYDROGEN ENERGY AUTOMOBILE Co.,Ltd. |
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Denomination of utility model: A hydrogen powered vehicle fuel cell system Granted publication date: 20211022 Pledgee: Jinan Luneng Kaiyuan Group Co.,Ltd. Pledgor: Grove Hydrogen Energy Technology Group Co.,Ltd. Registration number: Y2024980009137 |
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