CN116259786B - High-pressure hydrogen decompression and pressure stabilization system for hydrogen fuel cell automobile - Google Patents
High-pressure hydrogen decompression and pressure stabilization system for hydrogen fuel cell automobile Download PDFInfo
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- CN116259786B CN116259786B CN202310013378.4A CN202310013378A CN116259786B CN 116259786 B CN116259786 B CN 116259786B CN 202310013378 A CN202310013378 A CN 202310013378A CN 116259786 B CN116259786 B CN 116259786B
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 159
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 159
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 239000000446 fuel Substances 0.000 title claims abstract description 52
- 230000006837 decompression Effects 0.000 title claims abstract description 33
- 150000002431 hydrogen Chemical class 0.000 title claims abstract description 12
- 230000006641 stabilisation Effects 0.000 title abstract description 19
- 238000011105 stabilization Methods 0.000 title abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 170
- 238000001816 cooling Methods 0.000 claims abstract description 105
- 238000002347 injection Methods 0.000 claims abstract description 96
- 239000007924 injection Substances 0.000 claims abstract description 96
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 239000000110 cooling liquid Substances 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000017525 heat dissipation Effects 0.000 claims description 30
- 230000000087 stabilizing effect Effects 0.000 claims description 24
- 230000001360 synchronised effect Effects 0.000 claims description 23
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 239000013585 weight reducing agent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a high-pressure hydrogen decompression and pressure stabilization system for a hydrogen fuel cell automobile, which comprises a cell shell, wherein the right side of the cell shell is communicated with a gas transmission pipe, one end of the gas transmission pipe, which is far away from the cell shell, is provided with a gas injection mechanism, the left side of the cell shell is communicated with a gas outlet pipe, one end of the gas outlet pipe, which is far away from the cell shell, is provided with a decompression and pressure stabilization mechanism, the cell shell is provided with a temperature-saving mechanism, two sides of the top cover top are communicated with a top cover, an air cooling mechanism matched with the cell shell is arranged in the top cover, the effect of double decompression and pressure stabilization of high-pressure hydrogen is realized by arranging the gas injection mechanism and the decompression and pressure stabilization mechanism, and the effect of radiating treatment of heat generated by hydrogen in a cooling liquid circulation mode and an air cooling mode is realized by arranging the temperature-saving mechanism and the air cooling mechanism, so that the safety performance of the hydrogen filling of the hydrogen fuel cell is improved.
Description
Technical Field
The invention relates to the technical field of hydrogen fuel cell automobiles, in particular to a high-pressure hydrogen decompression and pressure stabilization system for a hydrogen fuel cell automobile.
Background
The power source of the hydrogen fuel cell car is mainly provided by hydrogen fuel, as a real 'zero-emission and pollution-free' carrying tool, is one of the main development directions of new energy clean power cars in the future, further research and development and mass production of the hydrogen fuel cell car are needed to be a new revolution in the car industry field, the hydrogen fuel cell is a power generation device for directly converting chemical energy of hydrogen and oxygen into electric energy, the basic principle is reverse reaction of electrolysis water, hydrogen and oxygen are respectively supplied to an anode and a cathode, and after hydrogen is outwards diffused through the anode and reacts with electrolyte, electrons are released to reach the cathode through external load.
With the increasing development of new energy technology at present, hydrogen fuel cell automobiles appear on the market, the hydrogen fuel cell automobiles need to add hydrogen fuel by means of a hydrogen filling mode, most of the currently adopted hydrogen filling modes are pressurized and filled with hydrogen, under the requirement of the hydrogen filling mode, the Joule-Thomson coefficient of the hydrogen is negative, so that the pressure intensity of the hydrogen after filling is increased, the temperature is increased, double pressure reduction and pressure stabilization treatment can not be carried out on high-pressure hydrogen from a filling source and an air outlet pressure release pressure according to actual requirements, and meanwhile, heat dissipation treatment can not be carried out on heat generated by the hydrogen by adopting two cooling modes of cooling liquid circulation and air cooling, so that dangerous situations of high pressure intensity and rapid temperature rise occur to the hydrogen fuel cell, the safety performance of hydrogen filling of the hydrogen fuel cell is reduced, and potential safety hazards exist;
therefore, we propose a high-pressure hydrogen decompression and pressure stabilization system for hydrogen fuel cell automobiles.
Disclosure of Invention
The invention aims at: the high-pressure hydrogen decompression and pressure stabilization system for the hydrogen fuel cell automobile is provided, so that the problem that the high-pressure hydrogen cannot be subjected to double decompression and pressure stabilization treatment from a filling source and an air outlet pressure release according to actual requirements and heat generated by the hydrogen cannot be subjected to heat dissipation treatment by adopting two cooling modes of cooling liquid circulation and air cooling in the prior art is solved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a high-pressure hydrogen decompression steady voltage system for hydrogen fuel cell car, includes the battery housing, the top fixedly connected with top cap of battery housing, the bottom fixedly connected with end shield of battery housing, the battery chamber that is used for hydrogen fuel cell installation has been seted up to the inner chamber of battery housing, the right side intercommunication of battery housing has the gas-supply pipe, the one end that the battery housing was kept away from to the gas-supply pipe is provided with the gas injection mechanism, the left side intercommunication of battery housing has the outlet duct, the one end that the battery housing was kept away from to the outlet duct is provided with decompression steady voltage mechanism, be provided with temperature-regulating mechanism on the battery housing, the both sides at top cap top all communicate there is the top shield, be provided with the forced air cooling mechanism that uses with the battery housing cooperation in the top shield.
Preferably, the gas injection mechanism comprises a gas injection port pressure sensor, the gas injection port pressure sensor is embedded on one side, close to the gas pipe, of the battery shell, and a gas injection port temperature sensor matched with the battery shell is arranged on the gas injection port pressure sensor, one end, far away from the battery shell, of the gas pipe is communicated with a gas injection port pressure reducing valve, a metering sensor is embedded on the gas injection port pressure reducing valve, a gas pump matched with the gas pipe is arranged on the metering sensor, a gas outlet of the gas pump is communicated with a gas injection port gas storage bottle, and one end, far away from the gas pipe, of the gas injection port pressure reducing valve is communicated with a hydrogen compressor through a bent pipe, and the gas injection port of the hydrogen compressor is communicated with a gas injection pipe.
Preferably, the decompression steady voltage mechanism includes gas outlet pressure sensor, gas outlet pressure sensor inlays and establishes in the battery case one side that is close to the outlet duct and gas outlet pressure sensor is last to be provided with the gas outlet temperature sensor that uses with the battery case cooperation, the one end intercommunication that the battery case was kept away from to the outlet duct has gas outlet relief valve and gas outlet relief valve's the other end intercommunication has the hydrogen pump, the gas outlet intercommunication of hydrogen pump has gas outlet gas bomb and gas outlet gas bomb's gas outlet intercommunication has three-way connection, three-way connection's both ends intercommunication respectively have first branch pipe and second branch pipe and the other end intercommunication of first branch pipe and second branch pipe have one-level gas holder and second gas holder respectively, the top intercommunication of one-level gas holder and second gas holder has intercommunication on intercommunication pipe and the intercommunication has the steady voltage valve, the inner wall of one-level gas holder and second gas holder inlays and is provided with the gas holder temperature sensor that uses with one-level gas holder and second gas holder cooperation on the gas holder pressure sensor.
Preferably, the temperature-saving mechanism comprises a front cooling frame and a rear cooling frame, the front cooling frame and the rear cooling frame are respectively embedded in the front surface and the back surface of the battery shell, four ends of the front cooling frame and the rear cooling frame, which are opposite, are respectively communicated with a straight-through pipe, one side of the front cooling frame, which is close to an air outlet pipe, is fixedly connected with a circulating pump, a liquid inlet of the circulating pump is communicated with a filling pipe which is communicated with a cooling liquid kettle of the automobile, a liquid outlet of the circulating pump is communicated with a three-way valve through a built-in channel, two ends of the three-way valve are respectively communicated with an upper cooling circulating pipe which is matched with a top cover, and a lower cooling circulating pipe which is matched with a bottom cover, and a heat absorption pad which is matched with a battery cavity is fixedly connected with the inner wall of the front cooling frame and the rear cooling frame.
Preferably, the air cooling mechanism comprises a driving motor, the driving motor is fixed at the center of the top cover, the output shaft of the driving motor is fixedly connected with a main synchronous wheel, one side of the main synchronous wheel, which is far away from the output shaft of the driving motor, is connected with a secondary synchronous wheel through a synchronous belt transmission, a heat dissipation fan which is matched with the top cover and the top cover for use is fixedly connected with an inner cavity of the secondary synchronous wheel through a fixing rod, and two sides of the top cover, which are close to the top cover, are fixedly connected with a current sharing net which is matched with the heat dissipation fan for use.
Preferably, one end of the gas injection pipe far away from the hydrogen compressor is communicated with a gas injection head matched with the external hydrogen filling gun, the inner wall of the gas injection head is provided with screw teeth, and the surface wall of the screw teeth is in threaded connection with a plug matched with the gas injection head.
Preferably, the air outlet pressure reducing valve is provided with an air pressure gauge, and the surface walls of the primary air storage tank and the secondary air storage tank are fixedly connected with a fixing frame fixedly matched with the front cooling frame.
Preferably, the front cooling rack and the rear cooling rack are provided with weight reduction grooves at the outer sides far away from the battery shell, and the inner cavities of the front cooling rack and the rear cooling rack are designed as hollow cavities.
Preferably, ventilation holes are formed in the periphery of the top cover, and the fan blades of the heat dissipation fan are in vortex streamline design.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
in the invention, by arranging the gas injection mechanism, the pressure and temperature changes of the hydrogen fuel cell during hydrogen gas injection are detected in real time by the cooperation of the gas injection port pressure sensor and the gas injection port temperature sensor, then the pressure and temperature changes of the hydrogen fuel cell after hydrogen gas injection are detected in real time by the cooperation of the gas injection port pressure reducing valve, the metering sensor, the gas pump, the gas injection port gas storage bottle, the hydrogen compressor and the gas injection pipe on the hydrogen injection source head by the cooperation of the gas outlet pressure sensor and the gas outlet temperature sensor by arranging the pressure reducing and pressure stabilizing mechanism, then the air outlet reducing valve, the hydrogen pump, the air outlet gas storage bottle, the three-way joint, the first branch pipe, the second branch pipe, the first-stage gas storage tank, the second-stage gas storage tank, the communicating pipe and the pressure stabilizing valve are matched to carry out pressure reducing and stabilizing treatment on redundant hydrogen exceeding the preset pressure, the effect of double pressure reducing and stabilizing on high-pressure hydrogen from the filling source and the air outlet pressure releasing is realized according to actual requirements, a cooling liquid conveying power source is provided by a circulating pump through arranging a temperature-saving mechanism, then the cooling liquid conveying power source is matched by a front cooling frame, a rear cooling frame, a straight through pipe, a filling pipe, the three-way valve, an upper cooling circulating pipe, a lower cooling circulating pipe and a heat absorbing pad, the rapid cooling treatment is carried out on hydrogen heat exceeding the preset temperature in a cooling liquid circulating heat dissipation mode, the air cooling mechanism is arranged, the power source is provided by a driving motor, the main synchronizing wheel, the auxiliary synchronizing wheel, the heat dissipation fan and the uniform current net are matched, the air cooling mode is adopted to achieve the heat dissipation purpose of the internal heat of a battery shell, the heat generated by the hydrogen is radiated by adopting two cooling modes of cooling liquid circulation and air cooling, so that dangerous situations of high pressure and rapid temperature rise of the hydrogen fuel cell are avoided, the safety performance of hydrogen filling of the hydrogen fuel cell is improved, and potential safety hazards are eliminated.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a rear elevational view of the structure of the present invention;
FIG. 3 is a front view of the structure of the gas injection mechanism of the present invention;
FIG. 4 is a front view of the structure of the pressure reducing and stabilizing mechanism of the present invention;
FIG. 5 is an exploded view of the battery housing, top cover and bottom cover of the present invention;
FIG. 6 is a bottom view of the structure of the present invention;
fig. 7 is a top cross-sectional view of the structure of the air cooling mechanism of the present invention.
In the figure: 1. a battery case; 2. a top cover; 3. a bottom cover; 4. a gas pipe; 5. an air injection mechanism; 51. a gas injection port pressure sensor; 52. a gas injection port temperature sensor; 53. a gas injection port relief valve; 54. a metering sensor; 55. an air pump; 56. a gas injection port gas cylinder; 57. a hydrogen compressor; 58. an air injection pipe; 6. an air outlet pipe; 7. a decompression and pressure stabilization mechanism; 71. an air outlet pressure sensor; 72. an air outlet temperature sensor; 73. a gas outlet pressure reducing valve; 74. a hydrogen pump; 75. an air outlet gas cylinder; 76. a three-way joint; 77. a first branch pipe; 78. a second branch pipe; 79. a first-stage air storage tank; 710. a second-stage air storage tank; 711. a communicating pipe; 712. a pressure stabilizing valve; 713. a gas storage tank pressure sensor; 714. a gas storage tank temperature sensor; 8. a temperature-saving mechanism; 81. a front cooling rack; 82. a post-cooling rack; 83. a straight pipe; 84. a circulation pump; 85. a filling pipe; 86. a three-way valve; 87. a top cooling circulation pipe; 88. a lower cooling circulation pipe; 89. a heat absorbing pad; 9. a top cover; 10. an air cooling mechanism; 101. a driving motor; 102. a master synchronizing wheel; 103. a slave synchronizing wheel; 104. a heat dissipation fan; 105. and (5) a uniform flow net.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 7, the present invention provides a technical solution: the high-pressure hydrogen decompression and pressure stabilizing system for the hydrogen fuel cell automobile comprises a cell shell 1, wherein the top of the cell shell 1 is fixedly connected with a top cover 2, the bottom of the cell shell 1 is fixedly connected with a bottom cover 3, a cell cavity for installing a hydrogen fuel cell is formed in the inner cavity of the cell shell 1, a gas pipe 4 is communicated on the right side of the cell shell 1, one end, far away from the cell shell 1, of the gas pipe 4 is provided with a gas injection mechanism 5, the gas injection mechanism 5 is arranged, the cooperation of a gas injection port pressure sensor 51 and a gas injection port temperature sensor 52 is used for detecting the pressure and temperature change of the hydrogen fuel cell during hydrogen gas injection in real time, the cooperation of a gas injection port decompression valve 53, a metering sensor 54, a gas pump 55, a gas injection port gas cylinder 56, a hydrogen compressor 57 and a gas injection pipe 58 are used for realizing the decompression and pressure stabilizing treatment effect of high-pressure hydrogen on a hydrogen injection source head, the left side of the battery shell 1 is communicated with an air outlet pipe 6, one end of the air outlet pipe 6 far away from the battery shell 1 is provided with a decompression and pressure stabilizing mechanism 7, the cooperation of an air outlet pressure sensor 71 and an air outlet temperature sensor 72 is used for detecting the pressure and temperature change of the hydrogen fuel cell after hydrogen filling in real time, the cooperation of an air storage tank pressure sensor 713 and an air storage tank temperature sensor 714 is used for detecting the internal pressure and temperature of a primary air storage tank 79 and a secondary air storage tank 710 after decompression in real time, and then the cooperation of an air outlet decompression valve 73, a hydrogen pump 74, an air outlet air storage cylinder 75, a three-way joint 76, a first branch pipe 77, a second branch pipe 78, a primary air storage tank 79, a secondary air storage tank 710, an intercommunication pipe 711 and a pressure stabilizing valve 712 is used for decompressing and stabilizing the redundant hydrogen exceeding the preset pressure to realize the decompression and pressure stabilizing treatment according to the actual requirements, the dual pressure reduction and stabilization effects on high-pressure hydrogen are achieved by the aid of a filling source and air release pressure, a temperature-saving mechanism 8 is arranged on a battery shell 1, a cooling liquid conveying power source is provided by a circulating pump 84 through the arrangement of the temperature-saving mechanism 8, then the heat dissipation purpose of the internal heat of the battery shell 1 is achieved by the aid of an air cooling mode through the cooperation of a front cooling frame 81, a rear cooling frame 82, a straight-through pipe 83, a filling pipe 85, a three-way valve 86, an upper cooling circulating pipe 87, a lower cooling circulating pipe 88 and a heat absorption pad 89, the rapid cooling treatment is achieved by means of cooling liquid circulation and heat dissipation of hydrogen heat exceeding a preset temperature, top covers 9 are communicated to two sides of the top cover 2, an air cooling mechanism 10 matched with the battery shell 1 is arranged in the top covers 9, the power source is provided by a driving motor 101 through the arrangement of the air cooling mechanism 10, and the heat dissipation purposes of the internal heat of the battery shell 1 are achieved by the aid of a main synchronous wheel 102, a slave synchronous wheel 103, a cooling fan 104 and a flow equalization net 105, the heat dissipation effect of the heat dissipation treatment is achieved by means of the cooling liquid circulation and the air cooling mode, the heat generated by the hydrogen is avoided, the dangerous situations of high and rapid temperature rising of the hydrogen fuel battery are avoided, the safety hazards are eliminated, and the safety hazards of the hydrogen are eliminated.
Example 2
Referring to fig. 1 to 7, the present invention provides a technical solution: the high-pressure hydrogen pressure reducing and stabilizing system for the hydrogen fuel cell automobile comprises a cell shell 1, wherein the top of the cell shell 1 is fixedly connected with a top cover 2, the bottom of the cell shell 1 is fixedly connected with a bottom cover 3, a cell cavity for installing the hydrogen fuel cell is formed in the inner cavity of the cell shell 1, a gas pipe 4 is communicated on the right side of the cell shell 1, a gas injection mechanism 5 is arranged at one end, far away from the cell shell 1, of the gas pipe 4, the gas injection mechanism 5 comprises a gas injection port pressure sensor 51, the gas injection port pressure sensor 51 is embedded at one side, close to the gas pipe 4, of the cell shell 1, and a gas injection port temperature sensor 52 matched with the cell shell 1 is arranged on the gas injection port pressure sensor 51, a gas injection port pressure reducing valve 53 is communicated at one end, far away from the cell shell 1, and a metering sensor 54 is embedded on the gas injection port pressure reducing valve 53, the metering sensor 54 is provided with an air pump 55 matched with the air pipe 4, an air outlet of the air pump 55 is communicated with an air injection port air storage bottle 56, one end of the air injection port pressure reducing valve 53, far away from the air pipe 4, is communicated with a hydrogen compressor 57 through an elbow, an air injection port of the hydrogen compressor 57 is communicated with an air injection pipe 58, one end of the air injection pipe 58, far away from the hydrogen compressor 57, is communicated with an air injection head matched with an external hydrogen filling gun, a screw thread is arranged on the inner wall of the air injection head, a plug matched with the air injection head is connected with the surface wall of the screw thread, the air injection pipe 58 is plugged under the state of no hydrogen injection, so that hydrogen leakage is prevented, by arranging the air injection mechanism 5, the pressure and temperature change of a hydrogen fuel cell during hydrogen filling are detected in real time by the matching of the air injection port pressure sensor 51 and the air injection port temperature sensor 52, and the metering sensor 54, the air pump 55, the cooperation of the gas injection port gas storage bottle 56, the hydrogen compressor 57 and the gas injection pipe 58 realizes the decompression and pressure stabilization treatment effect of high-pressure hydrogen on the hydrogen injection source head, the left side of the battery shell 1 is communicated with the gas outlet pipe 6, one end of the gas outlet pipe 6 far away from the battery shell 1 is provided with the decompression and pressure stabilization mechanism 7, the decompression and pressure stabilization mechanism 7 comprises a gas outlet pressure sensor 71, the gas outlet pressure sensor 71 is embedded on one side of the battery shell 1 near the gas outlet pipe 6 and provided with a gas outlet temperature sensor 72 matched with the battery shell 1 for use, one end of the gas outlet pipe 6 far away from the battery shell 1 is communicated with a gas outlet decompression valve 73 and the other end of the gas outlet decompression valve 73 is communicated with a hydrogen pump 74, the gas outlet decompression valve 73 is provided with a barometer, and the barometer adopts an electric barometer to display redundant hydrogen pressure flowing out of the gas outlet pipe 6, the air outlet of the hydrogen pump 74 is communicated with an air outlet air bottle 75, the air outlet of the air outlet air bottle 75 is communicated with a three-way joint 76, two ends of the three-way joint 76 are respectively communicated with a first branch pipe 77 and a second branch pipe 78, the other ends of the first branch pipe 77 and the second branch pipe 78 are respectively communicated with a first-stage air storage tank 79 and a second-stage air storage tank 710, the surface walls of the first-stage air storage tank 79 and the second-stage air storage tank 710 are fixedly connected with a fixing frame fixedly matched with a front cooling frame 81, fixed installation compensation is provided for the first-stage air storage tank 79 and the second-stage air storage tank 710, the top ends of the first-stage air storage tank 79 and the second-stage air storage tank 710 are communicated with an intercommunication pipe 711, the intercommunication pipe 711 is communicated with a pressure stabilizing valve 712, the inner walls of the first-stage air storage tank 79 and the second-stage air storage tank 710 are embedded with an air storage tank pressure sensor 713, and an air storage tank temperature sensor 714 matched with the first-stage air storage tank 79 and the second-stage air storage tank 710 is arranged on the air storage tank pressure sensor 713, by arranging the decompression and pressure stabilization mechanism 7, the pressure and temperature change of the hydrogen fuel cell after hydrogen filling are detected in real time by the cooperation of the air outlet pressure sensor 71 and the air outlet temperature sensor 72, the internal pressure and temperature of the primary air storage tank 79 and the secondary air storage tank 710 after decompression are detected in real time by the cooperation of the air storage tank pressure sensor 713 and the air storage tank temperature sensor 714, the dual decompression and pressure stabilization effects of the high-pressure hydrogen are realized from the filling source and the air outlet release pressure according to actual demands by the cooperation of the air outlet decompression valve 73, the hydrogen pump 74, the air outlet air storage bottle 75, the three-way joint 76, the first branch pipe 77, the second branch pipe 78, the primary air storage tank 79, the secondary air storage tank 710, the communicating pipe 711 and the pressure stabilization valve 712, the battery shell 1 is provided with a temperature-saving mechanism 8, the temperature-saving mechanism 8 comprises a front cooling frame 81 and a rear cooling frame 82, the front cooling frame 81 and the rear cooling frame 82 are respectively embedded on the front surface and the back surface of the battery shell 1, four opposite ends of the front cooling frame 81 and the rear cooling frame 82 are communicated with a straight-through pipe 83, the outer sides of the front cooling frame 81 and the rear cooling frame 82, which are far away from the battery shell 1, are provided with weight-reducing grooves, the weight of the front cooling frame 81 and the rear cooling frame 82 is reduced, the overall assembly quality of an automobile is improved, the driving load of the automobile is reduced, the inner cavities of the front cooling frame 81 and the rear cooling frame 82 adopt a hollow cavity design, the circulating flow requirement of cooling liquid is met, one side of the front cooling frame 81, which is close to the air outlet pipe 6, is fixedly connected with a circulating pump 84, and a liquid inlet of the circulating pump 84 is communicated with a filling pipe 85 which is communicated with an automobile cooling liquid pot, the liquid outlet of the circulating pump 84 is communicated with a three-way valve 86 through an internally arranged channel, two ends of the three-way valve 86 are respectively communicated with an upper cooling circulating pipe 87 matched with the top cover 2 and a lower cooling circulating pipe 88 matched with the bottom cover 3, the inner walls of the front cooling frame 81 and the rear cooling frame 82 are fixedly connected with a heat absorption pad 89 matched with a battery cavity, a cooling liquid conveying power source is provided by the circulating pump 84 through the arrangement of a temperature-saving mechanism 8, then the cooling liquid conveying power source is matched with the front cooling frame 81, the rear cooling frame 82, a straight-through pipe 83, a filling pipe 85, the three-way valve 86, the upper cooling circulating pipe 87, the lower cooling circulating pipe 88 and the heat absorption pad 89, the rapid cooling treatment is carried out on the hydrogen heat exceeding the preset temperature in a cooling liquid circulation heat dissipation mode, the two sides of the top cover 2 are communicated with the top cover 9, the periphery of the top cover 9 is provided with air-exchanging holes, and the air exchanging requirements of the heat dissipation of the hydrogen fuel cell are met, an air cooling mechanism 10 matched with the battery shell 1 is arranged in the top cover 9, the air cooling mechanism 10 comprises a driving motor 101, the driving motor 101 is fixed at the center of the top cover 9, an output shaft of the driving motor 101 is fixedly connected with a main synchronous wheel 102, one side of the main synchronous wheel 102 far away from the output shaft of the driving motor 101 is connected with a secondary synchronous wheel 103 through a synchronous belt transmission, a heat dissipation fan 104 matched with the top cover 9 and the top cover 2 is fixedly connected with an inner cavity of the secondary synchronous wheel 103 through a fixed rod, the fan blades of the heat dissipation fan 104 adopt vortex streamline design, the rotating speed of the heat dissipation fan 104 is accelerated, the rapid heat dissipation work of heat is facilitated, two sides of the top cover 9 close to the top cover 2 are fixedly connected with a flow equalization net 105 matched with the heat dissipation fan 104, the electric components and valves are controlled by an automobile self-contained control host, and each valve is an electric valve, by arranging the air cooling mechanism 10, the driving motor 101 provides a power source, and the main synchronous wheel 102, the auxiliary synchronous wheel 103, the heat dissipation fan 104 and the current sharing net 105 are matched, so that the heat dissipation purpose of the heat inside the battery shell 1 is achieved by adopting an air cooling mode, the effect of heat dissipation treatment of the heat generated by the hydrogen by adopting two cooling modes of cooling liquid circulation and air cooling is achieved, the dangerous conditions of high pressure and rapid temperature rise of the hydrogen fuel cell are avoided, the safety performance of hydrogen filling of the hydrogen fuel cell is improved, and the potential safety hazard is eliminated.
Working principle: the staff unscrews the plug on the gas injection head, opens the gas injection channel of the gas injection pipe 58, opens the gas injection port pressure reducing valve 53, then injects hydrogen into the gas injection pipe 58 by using the external hydrogen injection gun, then compresses the hydrogen in the hydrogen compressor 57, the high-pressure hydrogen sequentially reaches the hydrogen fuel cell in the cell shell 1 through the gas injection port pressure reducing valve 53 and the gas transmission pipe 4, along with the filling of the high-pressure hydrogen, the metering sensor 54 senses the amount of the high-pressure hydrogen filled, the gas injection port pressure sensor 51 and the gas injection port temperature sensor 52 detect the pressure and the temperature of the high-pressure hydrogen in the hydrogen fuel cell in real time, the high-pressure hydrogen rapidly flows in the hydrogen fuel cell, and if the pressure and the temperature of the hydrogen in the hydrogen fuel cell exceed the preset range values of the gas injection port pressure sensor 51, the gas injection port temperature sensor 52, the gas outlet pressure sensor 71 and the gas outlet temperature sensor 72, the air pump 55 is started to supply the hydrogen flowing and reflowing in the air pipe 4 into the gas injection port gas cylinder 56 for pre-buffering, and the filling of the hydrogen is stopped, at this time, the air outlet pressure reducing valve 73 and the pressure stabilizing valve 712 are opened, the redundant high-pressure hydrogen is reduced by the air outlet pipe 6 through the air outlet pressure reducing valve 73 and then enters the hydrogen pump 74, the hydrogen pump 74 rapidly carries out transition pressure release treatment on the redundant high-pressure hydrogen through the air outlet gas cylinder 75 and then supplies the hydrogen into the three-way joint 76, the decompressed redundant hydrogen is respectively delivered into the first-stage gas storage tank 79 and the second-stage gas storage tank 710 through the first branch pipe 77 and the second branch pipe 78, the redundant hydrogen flows through the interconnecting pipe 711 in the first-stage gas storage tank 79 and the second-stage gas storage tank 710, the pressure stabilizing valve 712 carries out pressure stabilizing treatment on the redundant hydrogen passing through the interconnecting pipe 711, the pressure of the hydrogen stored in the primary gas storage tank 79 and the secondary gas storage tank 710 tends to be stable, and when the pressure and the temperature of the hydrogen stored in the primary gas storage tank 79 and the secondary gas storage tank 710 reach the preset ranges of the gas storage tank pressure sensor 713 and the gas storage tank temperature sensor 714, and the pressure of the hydrogen in the hydrogen fuel cell reaches the preset range values of the gas injection port pressure sensor 51 and the gas outlet pressure sensor 71, the pressure reducing and stabilizing work before and after the hydrogen is injected into the hydrogen fuel cell can be completed;
meanwhile, the three-way valve 86 is opened, the circulating pump 84 supplies the cooling liquid in the cooling liquid pot of the automobile to the front cooling frame 81 through the filling pipe 85, then the cooling liquid is supplied to the rear cooling frame 82 through the through pipe 83, the heat absorption pad 89 absorbs heat to be matched, the cooling liquid circularly flows in the front cooling frame 81 and the rear cooling frame 82 and carries and dissipates the heat around the hydrogen fuel cell, meanwhile, the cooling liquid is supplied to the upper cooling circulating pipe 87 and the lower cooling circulating pipe 88 through the three-way valve 86, the upper cooling circulating pipe 87 and the lower cooling circulating pipe 88 carry and dissipate the heat in the areas of the top cover 2 and the bottom cover 3, meanwhile, the driving motor 101 drives the main synchronous wheel 102 to rotate, the main synchronous wheel 102 drives the two groups of heat dissipation fans 104 on the auxiliary synchronous wheel 103 through the synchronous belt, the two groups of heat dissipation fans 104 under high-speed rotate the heat generated by the hydrogen fuel cell is discharged through the air exchange holes on the top cover 9 after being processed through the uniform current network 105, and the temperature of the hydrogen fuel cell reaches the value of the preset range of the air outlet temperature sensor 52 and the air outlet temperature sensor 72, and the heat dissipation work of the hydrogen fuel cell can be completed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high-pressure hydrogen decompression steady voltage system for hydrogen fuel cell car, includes battery case (1), its characterized in that: the top of battery case (1) fixedly connected with top cap (2), the bottom fixedly connected with end cover (3) of battery case (1), the battery chamber that is used for hydrogen fuel cell installation has been seted up to the inner chamber of battery case (1), the right side intercommunication of battery case (1) has gas-supply pipe (4), the one end that gas-supply pipe (4) kept away from battery case (1) is provided with gas injection mechanism (5), the left side intercommunication of battery case (1) has outlet duct (6), the one end that battery case (1) was kept away from to outlet duct (6) is provided with decompression steady voltage mechanism (7), be provided with on battery case (1) festival warm mechanism (8), the both sides at top cap (2) top communicate respectively have a top cap (9), be provided with in top cap (9) with battery case (1) cooperation use wind cooling mechanism (10);
the gas injection mechanism (5) comprises a gas injection port pressure sensor (51), the gas injection port pressure sensor (51) is embedded in one side, close to the gas pipe (4), of the battery shell (1), a gas injection port temperature sensor (52) matched with the battery shell (1) is arranged on the gas injection port pressure sensor (51), one end, far away from the battery shell (1), of the gas pipe (4) is communicated with a gas injection port pressure reducing valve (53) and the gas injection port pressure reducing valve (53) is embedded with a metering sensor (54), the metering sensor (54) is provided with a gas pump (55) matched with the gas pipe (4), a gas outlet of the gas pump (55) is communicated with a gas injection port gas storage bottle (56), and one end, far away from the gas pipe (4), of the gas injection port pressure reducing valve (53) is communicated with a hydrogen compressor (57) through a bent pipe and the gas injection port of the hydrogen compressor (57) is communicated with a gas injection pipe (58);
the pressure reducing and stabilizing mechanism (7) comprises an air outlet pressure sensor (71), the air outlet pressure sensor (71) is embedded on one side, close to an air outlet pipe (6), of a battery shell (1) and is provided with an air outlet temperature sensor (72) matched with the battery shell (1), one end, far away from the battery shell (1), of the air outlet pipe (6) is communicated with an air outlet pressure reducing valve (73) and the other end of the air outlet pressure reducing valve (73) is communicated with a hydrogen pump (74), an air outlet of the hydrogen pump (74) is communicated with an air outlet gas storage bottle (75) and an air outlet of the air outlet gas storage bottle (75) is communicated with a three-way joint (76), two ends of the three-way joint (76) are respectively communicated with a first branch pipe (77) and a second branch pipe (78) and the other ends of the first branch pipe (77) and the second branch pipe (78) are respectively communicated with a first-stage gas storage tank (79) and a second-stage gas storage tank (710), the top ends of the first-stage gas storage tank (79) and the second-stage gas storage tank (710) are communicated with an intercommunication pipe (711) and are communicated with an intercommunication pipe (711), an air tank pressure sensor (713) is embedded in the inner walls of the first-stage air tank (79) and the second-stage air tank (710), and an air tank temperature sensor (714) matched with the first-stage air tank (79) and the second-stage air tank (710) is arranged on the air tank pressure sensor (713);
the temperature-saving mechanism (8) comprises a front cooling frame (81) and a rear cooling frame (82), the front cooling frame (81) and the rear cooling frame (82) are respectively embedded in the front and the back of the battery shell (1), the opposite four ends of the front cooling frame (81) and the rear cooling frame (82) are respectively communicated with a straight-through pipe (83), one side of the front cooling frame (81) close to an air outlet pipe (6) is fixedly connected with a circulating pump (84) and a liquid inlet of the circulating pump (84) is communicated with a filling pipe (85) which is communicated with a cooling liquid kettle of the automobile, the liquid outlet of the circulating pump (84) is communicated with a three-way valve (86) through an internally arranged channel, two ends of the three-way valve (86) are respectively communicated with an upper cooling circulating pipe (87) which is matched with the top cover (2) for use and a lower cooling circulating pipe (88) which is matched with the bottom cover (3) for use, and the inner walls of the front cooling frame (81) and the rear cooling frame (82) are fixedly connected with a heat absorption pad (89) which is matched with the battery cavity for use.
2. The high-pressure hydrogen pressure reducing and stabilizing system for hydrogen fuel cell automobile according to claim 1, wherein: the air cooling mechanism (10) comprises a driving motor (101), the driving motor (101) is fixed at the center of the top of a top cover (9) and is fixedly connected with a main synchronous wheel (102) through an output shaft of the driving motor (101), one side, far away from the output shaft of the driving motor (101), of the main synchronous wheel (102) is connected with a secondary synchronous wheel (103) through synchronous belt transmission, a heat dissipation fan (104) matched with the top cover (9) and the top cover (2) is fixedly connected with an inner cavity of the secondary synchronous wheel (103) through a fixing rod, and two sides, close to the top cover (2), of the top cover (9) are fixedly connected with a current sharing net (105) matched with the heat dissipation fan (104).
3. The high-pressure hydrogen pressure reducing and stabilizing system for hydrogen fuel cell automobile according to claim 1, wherein: one end of the gas injection pipe (58) far away from the hydrogen compressor (57) is communicated with a gas injection head matched with an external hydrogen filling gun, a screw tooth is arranged on the inner wall of the gas injection head, and a plug matched with the gas injection head is connected with the surface wall of the screw tooth in a threaded manner.
4. The high-pressure hydrogen pressure reducing and stabilizing system for hydrogen fuel cell automobile according to claim 1, wherein: the air outlet pressure reducing valve (73) is provided with an air pressure gauge, and the surface walls of the primary air storage tank (79) and the secondary air storage tank (710) are fixedly connected with a fixing frame which is fixedly matched with the front cooling frame (81).
5. The high-pressure hydrogen pressure reducing and stabilizing system for hydrogen fuel cell automobile according to claim 1, wherein: the front cooling frame (81) and the rear cooling frame (82) are far away from the outer side of the battery shell (1) and are provided with weight reduction grooves, and the inner cavities of the front cooling frame (81) and the rear cooling frame (82) are designed into hollow cavities.
6. The high-pressure hydrogen pressure reducing and stabilizing system for hydrogen fuel cell automobile according to claim 2, wherein: air vent holes are formed in the periphery of the top cover (9), and fan blades of the heat dissipation fan (104) are in vortex streamline design.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013378.4A CN116259786B (en) | 2023-01-05 | 2023-01-05 | High-pressure hydrogen decompression and pressure stabilization system for hydrogen fuel cell automobile |
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| CN202310013378.4A CN116259786B (en) | 2023-01-05 | 2023-01-05 | High-pressure hydrogen decompression and pressure stabilization system for hydrogen fuel cell automobile |
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| CN116259786B true CN116259786B (en) | 2024-02-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128649A1 (en) * | 2019-12-26 | 2021-07-01 | 中山大洋电机股份有限公司 | Fuel cell system |
| CN114094141A (en) * | 2021-10-28 | 2022-02-25 | 江苏大学 | Hydrogen supply system of hydrogen fuel cell |
| CN216958114U (en) * | 2021-11-30 | 2022-07-12 | 武汉格罗夫氢能汽车有限公司 | Anode hydrogen supply system of multi-stack fuel cell with voltage stabilizing function |
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- 2023-01-05 CN CN202310013378.4A patent/CN116259786B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128649A1 (en) * | 2019-12-26 | 2021-07-01 | 中山大洋电机股份有限公司 | Fuel cell system |
| CN114094141A (en) * | 2021-10-28 | 2022-02-25 | 江苏大学 | Hydrogen supply system of hydrogen fuel cell |
| CN216958114U (en) * | 2021-11-30 | 2022-07-12 | 武汉格罗夫氢能汽车有限公司 | Anode hydrogen supply system of multi-stack fuel cell with voltage stabilizing function |
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