CN117400894B - Hydrogen energy braking system and hydrogen energy vehicle with same - Google Patents
Hydrogen energy braking system and hydrogen energy vehicle with same Download PDFInfo
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- CN117400894B CN117400894B CN202311719256.3A CN202311719256A CN117400894B CN 117400894 B CN117400894 B CN 117400894B CN 202311719256 A CN202311719256 A CN 202311719256A CN 117400894 B CN117400894 B CN 117400894B
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 239000001257 hydrogen Substances 0.000 title claims abstract description 166
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 166
- 239000000446 fuel Substances 0.000 claims abstract description 32
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 37
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to the field of vehicle braking systems, and provides a hydrogen energy braking system and a hydrogen energy vehicle with the same, wherein the hydrogen energy braking system comprises a fuel hydrogen cylinder, a braking system, a quick release check valve and a recovery tank, the braking system comprises an air storage cylinder, a double-cavity braking valve, a quick release valve and a relay valve, and a pressure valve is arranged between the air storage cylinder and the braking hydrogen cylinder; the recovery tank is communicated with the brake hydrogen cylinder, the exhaust port of the quick release valve is connected with the exhaust port of the relay valve in parallel and arranged on the recovery tank, and a booster pump is arranged between the recovery tank and the brake hydrogen cylinder. The hydrogen cylinder is used for providing the required air pressure for the braking system, and then the hydrogen is recycled through the recycling tank, and the output value of the hydrogen cylinder can be pressurized again through the booster pump, so that the supply quantity of the hydrogen is ensured, namely the normal operation of the braking system is ensured, and the hydrogen recycling device has good safety and practicability.
Description
Technical Field
The invention relates to the field of vehicle braking systems, in particular to a hydrogen energy braking system and a hydrogen energy vehicle with the same.
Background
The existing vehicle has a disadvantage in starting the brake that high-speed rotary compression is performed in the compressor after the compressor sucks air. And then cooperates with the relay valve, the piston movement needed by braking is carried out, so that the temperature in the compressor can be increased, and when air flows through the pipeline, the temperature can be gradually reduced; at this time, moisture is generated. And the generation of moisture can lead to the pipeline and related devices to be rusted, if the moisture is frozen in a cold environment, the pipeline is blocked, and the potential safety hazard is high. Thus, the existing method of installing the dryer avoids the problem of moisture, but this increases the cost of using, maintaining or repairing the dryer.
In the application number CN201910828295.4, the application name is "a fuel cell car hydrogen power-assisted braking system", in which: the high-pressure hydrogen of the hydrogen storage bottle is decompressed by the decompression valve and then is led into the booster to provide assistance when the vehicle is braked, the hydraulic brake actuating mechanism is driven to carry out braking action, the pressure potential energy of part of hydrogen in the process is fully utilized, and finally, the part of hydrogen can be sent into a galvanic pile of an automobile to be recycled. "
The hydrogen is taken as high-pressure gas to realize braking action, but the hydrogen is supplied and finally conveyed to a galvanic pile for use, so that the energy consumption problem is formed, if no hydrogen exists or the hydrogen pressure is reduced, the fatal problem is formed for a braking system of a vehicle, namely, effective braking action cannot be formed; if the pressure of the hydrogen bottle is kept to meet the pressure required by braking, the use of hydrogen energy is reduced, and the endurance mileage of the vehicle is reduced, so that the practicability and the safety have great problems.
Disclosure of Invention
The invention aims to provide a hydrogen energy braking system and a hydrogen energy vehicle with the same, and aims to solve the problem that the existing hydrogen energy braking system has certain potential safety hazard.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a hydrogen energy braking system comprising:
braking a hydrogen cylinder;
a plurality of fuel hydrogen cylinders, which are connected with a fuel cell of the vehicle;
the brake system comprises an air reservoir connected with the brake hydrogen cylinder, a double-cavity brake valve connected with the air reservoir, a quick release valve arranged between a front wheel brake of the vehicle and the double-cavity brake valve, and a relay valve arranged between a rear wheel brake of the vehicle and the double-cavity brake valve, wherein a pressure valve is arranged between the air reservoir and the brake hydrogen cylinder;
the output end of the quick release check valve is connected and arranged on the rear wheel brake, the first input end of the quick release check valve is connected and arranged with the air reservoir, and the second input end of the quick release check valve is communicated and arranged with the relay valve;
the recovery tank is communicated with the brake hydrogen cylinder, the exhaust port of the quick release valve and the exhaust port of the relay valve are connected in parallel and arranged on the recovery tank, and a pressurizing pump is arranged between the recovery tank and the brake hydrogen cylinder.
Preferably, the output end of the brake hydrogen cylinder is further communicated with an output pipeline of the fuel hydrogen cylinder, and a first electromagnetic valve and a first pressure detector are arranged on a communicating pipeline between the brake hydrogen cylinder and the fuel hydrogen cylinder.
Preferably, a second pressure detector and a gas compressor which is connected with the pressure valve in parallel are further arranged on a pipeline between the brake hydrogen cylinder and the gas storage cylinder, and an adjusting valve is arranged on the input end of the gas compressor.
Preferably, the device further comprises a plurality of branch air cylinders and four-way protection valves communicated with the plurality of branch air cylinders in parallel, and the four-way protection valves are communicated with the air cylinders.
Preferably, the air inlet end of the relay valve is connected with the air storage cylinder or the shunt air storage cylinder; the first air inlet of the double-cavity brake valve is connected with one of the branch air storage cylinders, and the second air inlet of the double-cavity brake valve is connected with the other branch air storage cylinder.
Preferably, a two-way check valve is arranged on the first input end pipeline of the quick release check valve, a first air inlet of the two-way check valve is connected with one of the branch air storage cylinders, and a second air inlet of the two-way check valve is connected with the other branch air storage cylinder.
Preferably, the input end of the shunt air reservoir is provided with a first one-way valve flowing in the direction of the shunt air reservoir.
Preferably, a hydrogen concentration detector and a third pressure detector are arranged on a pipeline between the fuel hydrogen cylinder and the fuel cell of the vehicle, and an on-off valve is arranged at the output end of the fuel hydrogen cylinder.
Preferably, the input end of the recovery tank is provided with a second one-way valve, and the output end of the recovery tank is provided with a second electromagnetic valve.
The hydrogen energy vehicle with the hydrogen energy braking system comprises the hydrogen energy braking system.
After the technical scheme is adopted, compared with the background technology, the invention has the following advantages:
1. the hydrogen is recycled through the recycling tank, and the hydrogen can be conveyed to the brake hydrogen cylinder in a pressurizing mode through the pressurizing pump, so that the supply quantity of the hydrogen is guaranteed, namely the normal operation of the brake system is guaranteed, and the device has good safety and practicability.
2. Because the air pressure in the brake hydrogen cylinder can be far greater than the air pressure required by braking, the brake hydrogen cylinder can be used as standby hydrogen when in use, and only the hydrogen with the pressure required by a brake system is reserved, so that the practicability can be improved.
Drawings
FIG. 1 is a schematic illustration of a hydrogen energy braking system according to the present invention;
FIG. 2 is a schematic view of the gas path of the hydrogen energy braking system with a split gas cylinder according to the present invention;
FIG. 3 is a schematic illustration of a braking system of the hydrogen energy braking system of the present invention;
fig. 4 is a schematic structural diagram of a four-way protection valve of the hydrogen energy braking system according to the present invention.
Reference numerals illustrate:
10. a fuel hydrogen cylinder; 101. a hydrogen concentration detector; 102. a third pressure detector; 103. a switch valve;
20. braking a hydrogen cylinder; 201. a first electromagnetic valve; 202. a first pressure detector; 203. a second pressure detector; 204. a gas compressor; 205. a regulating valve;
30. a brake system; 301. an air reservoir; 302. a dual chamber brake valve; 303. a quick release valve; 304. a relay valve; 305. a pressure valve;
40. a quick release check valve; 401. a two-way check valve; 402. a hand brake valve;
50. a recovery tank; 501. a pressurizing pump; 502. a second one-way valve; 503. a second electromagnetic valve;
60. a shunt air reservoir; 601. four-way protection valve; 602. a first one-way valve; 603. a spare air reservoir;
70. a fuel cell; 701. a front wheel brake; 702. and a rear wheel brake.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In addition, it should be noted that: the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements of the present invention must have a particular orientation, and thus should not be construed as limiting the invention.
When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the invention will be understood by those skilled in the art according to the specific circumstances.
Example 1
Referring to fig. 1, 2 and 3, the present embodiment provides a hydrogen energy braking system 30, which includes a fuel hydrogen cylinder 10, a braking hydrogen cylinder 20, a braking system 30, a quick release check valve 40 and a recovery tank 50, wherein a plurality of fuel hydrogen cylinders 10 are provided, and the fuel hydrogen cylinders 10 are connected with a fuel cell 70 of a vehicle; the brake system 30 includes an air tank 301 connected to the brake hydrogen tank 20, a two-chamber brake valve 302 connected to the air tank 301, a quick release valve 303 provided between a front wheel brake 701 and the two-chamber brake valve 302 of the vehicle, and a relay valve 304 provided between a rear wheel brake 702 and the two-chamber brake valve 302 of the vehicle, a pressure valve 305 being provided between the air tank 301 and the brake hydrogen tank 20; the output end of the quick release check valve 40 is connected and arranged on the rear wheel brake 702, the first input end of the quick release check valve 40 is connected and arranged with the air reservoir 301, and the second input end of the quick release check valve 40 is communicated and arranged with the relay valve 304; the recovery tank 50 is communicated with the brake hydrogen cylinder 20, the exhaust port of the quick release valve 303 and the exhaust port of the relay valve 304 are connected in parallel and arranged on the recovery tank 50, and a pressurizing pump 501 is arranged between the recovery tank 50 and the brake hydrogen cylinder 20.
Wherein, for the front wheel brake 701, the brake is a wheel brake, and the two wheel brakes are connected in parallel through a pipeline in the brake air chamber, so that when the quick valve deflates and enters the brake air chamber, the push rod is pushed to drive the brake pad to brake. Similarly, the rear wheel brake 702 is also a brake of a wheel, and is communicated in a spring brake air chamber (namely an energy storage spring) through the relay valve 304 and the quick release check valve 40, and synchronous braking operation is realized through the relay valve 304, so that the problem of braking time difference is solved.
Specifically, the brake hydrogen cylinder 20 supplies the required hydrogen gas to the gas cylinder 301 via the pressure valve 305, and the gas pressure of the two-chamber brake valve 302 can be ensured by the gas cylinder 301, so that the front wheel brakes 701 of the two front wheels are braked by the quick release valve 303. That is, after the dual-chamber brake valve 302 is stepped on, the hydrogen gas in the gas cylinder 301 is input into the brake chamber of the front wheel via the brake chamber of the dual-chamber brake valve 302 and the quick-release valve, and then the pressure required for braking is provided, thereby realizing braking operation; when the pedal of the dual-chamber brake valve 302 is released, the hydrogen in the brake chamber enters the recovery tank 50 through the quick release valve 303 to be recovered and stored, and then the recovered hydrogen can be recompressed into a hydrogen cylinder through the booster pump 501, so that the purpose of recycling is realized.
Further, as shown in fig. 1, the input end of the recovery tank 50 is provided with a second check valve 502, and the output end of the recovery tank 50 is provided with a second electromagnetic valve 503 in this embodiment. By the provision of the second check valve 502, the hydrogen gas can be prevented from flowing back, so that the quick release valve 303 leaks quickly into the recovery tank 50; when the recovery tank 50 stores a certain amount of hydrogen gas, the second solenoid valve 503 may be opened, and the hydrogen gas may be re-supplied to the brake hydrogen cylinder 20 by the pressurizing pump 501. Meanwhile, the pressurizing pump 501 can also pressurize the hydrogen in the fuel hydrogen cylinder 10 into the brake hydrogen cylinder 20, and can form emergency supply air pressure to meet the emergency brake of the brake system 30. That is, when leakage type partial damage or aging pressure release occurs in the pipe of the brake system 30, sufficient air pressure can be provided through the high-pressure hydrogen cylinder, and the air pressure required for braking can be satisfied in a short time, so that the vehicle stops driving, and the safety is improved.
Similarly, when the dual-chamber brake valve 302 is stepped on, hydrogen in the gas cylinder 301 enters the relay valve 304 and the quick release check valve 40 through the brake air chamber of the dual-chamber brake valve 302, the hydrogen in the gas cylinder 301 is transmitted into the brake air chamber of the rear wheel through the relay valve 304, and the use of the relay valve 304 can eliminate the distance difference and the time difference from the dual-chamber brake valve 302 to different wheels, so that the synchronism and the instantaneity of the brake can be achieved. When the pedal of the dual-chamber brake valve 302 is released, the hydrogen in the brake chamber enters the recovery tank 50 through the relay valve 304 to be recovered and stored, and then the recovered hydrogen can be recompressed into a hydrogen cylinder through the booster pump 501, so that the purpose of recycling is realized. Meanwhile, the normal operation of the brake system 30 is ensured, and the safety and the practicability are good.
The pressure in the brake hydrogen cylinder 20 and the fuel hydrogen cylinder 10 may be 70Mpa, or hydrogen cylinders of different pressures may be selected according to the size of the vehicle, for example, 35Mpa or 12Mpa, etc. The pressure required by braking is within 10 atmospheres, wherein 1Mpa is equal to 10 atmospheres, so that the pressure of the hydrogen provided by the braking hydrogen cylinder 20 can completely meet the requirement of the braking pressure, and the pressure can be compressed and conveyed without a compressor.
Further, the quick release check valve 40 can be understood as the operation of the quick release valve 303 and the check valve, which in turn provides a desired air release line for the rear wheel brake 702, and recovers the quick release hydrogen into the recovery tank 50 through the relay valve 304, thereby forming a good hydrogen flow path and improving the stability and safety of the operation of the brake system 30.
As shown in fig. 1, the output end of the brake hydrogen cylinder 20 in this embodiment is further connected to the output pipeline of the fuel hydrogen cylinder 10, and a first electromagnetic valve 201 and a first pressure detector 202 are disposed on the connecting pipeline between the brake hydrogen cylinder 20 and the fuel hydrogen cylinder 10. Because the pressure and stock of the brake hydrogen cylinder 20 are large, the pressure and the amount of the gas required by the brake system 30 are far exceeded, and therefore the brake hydrogen cylinder 20 can be used as spare hydrogen energy.
Specifically, when the hydrogen usage amount of the fuel hydrogen cylinder 10 is small, the hydrogen may be supplied from the brake hydrogen cylinder 20, and the first solenoid valve 201 is opened to realize the branched transportation of the hydrogen to the fuel cell 70. Meanwhile, the first pressure detector 202 also detects the air pressure of the brake hydrogen cylinder 20 to ensure that the hydrogen is not excessively delivered; that is, after enough hydrogen is reserved for the braking system 30 and the first pressure detector 202 detects that the limiting value is reached, the first electromagnetic valve 201 closes the pipeline to achieve the purpose of standby hydrogen energy. And for the first electromagnetic valve 201 and the first pressure detector 202, the first electromagnetic valve 201 and the first pressure detector can be electrically connected to a whole vehicle controller of the vehicle for regulation and control, and corresponding buttons are arranged to open the first electromagnetic valve 201 so as to realize corresponding operation.
As shown in fig. 1, in this embodiment, a second pressure detector 203 is further disposed on a pipeline between the brake hydrogen cylinder 20 and the gas cylinder 301, and a gas compressor 204 is disposed in parallel with the pressure valve 305, and a regulating valve 205 is disposed on an input end of the gas compressor 204.
Specifically, a pipeline with a gas compressor 204 is connected in parallel to the pressure valve 305, and when the second pressure detector 203 detects that the pressure on the hydrogen supply pipeline is insufficient, the adjusting valve 205 is opened and the pressure valve 305 is closed, so that hydrogen can only be compressed by the gas compressor 204, and the required hydrogen pressure is further conveyed, thereby avoiding the condition of insufficient supply when the hydrogen storage is low. I.e. it can be understood that: the hydrogen gas can be sufficiently supplied, and in the case of keeping the hydrogen gas pressure in the rated fuel hydrogen cylinder 10 (when the hydrogen cylinder is empty, the cylinder internal pressure is not lower than 0.05 Mpa), the hydrogen gas can be sufficiently used, a mileage of the hydrogen energy braking system 30 can be ensured or increased, and a stable vehicle mileage effect can be provided.
As shown in fig. 1, in this embodiment, a hydrogen concentration detector 101 and a third pressure detector 102 are disposed on a pipeline between a fuel hydrogen cylinder 10 and a fuel cell 70 of a vehicle, where the hydrogen concentration detector 101 may be a GTYQ-STC50 type hydrogen detector, and may display the hydrogen concentration in real time, and an output end of the fuel hydrogen cylinder 10 is provided with a switch valve 103. The hydrogen concentration and the pressure in the conveying pipeline can be monitored through the hydrogen concentration detector 101 and the third pressure detector 102, so that the whole vehicle control system of the vehicle can acquire corresponding monitoring information, and the use condition of the hydrogen is fed back on the display screen, so that a driver is assisted to know the corresponding condition to drive, and the use convenience is improved.
The first pressure detector 202, the second pressure detector 203 and the third pressure detector 102 may be digital display pressure gauges, and the air pressure in the pipeline may be detected in real time, or the values on the pressure gauges may be displayed on a vehicle display screen through a whole vehicle controller.
As shown in fig. 2 and 4, in the present embodiment, a plurality of branched gas cylinders 60 and four-way protection valves 601 connected in parallel to the plurality of branched gas cylinders 60 are further provided, and the four-way protection valves 601 are connected to the gas cylinders 301. The four-way protection valve 601 consists of four protection valves, and a valve port formed by the four protection valves is connected with the air reservoir 301. The split gas cylinders 60 may be provided with four, and then the gas outlet ends of the four protection valves may be communicated in a one-to-one correspondence. Through four-way protection valve 601, if there is some circuit pressure drop more, then can maintain the dynamic closure pressure of gas circuit in other circuits for other circuit's atmospheric pressure is normal, can carry out the atmospheric pressure that brakes required, improves the security of using. However, for the condition of pressure loss of the pipeline, the vehicle needs to be maintained in time so as to ensure the normal use of the gas circuit.
As shown in fig. 2, in this embodiment, a spare air cylinder 603 may be disposed for the shunt air cylinder 60, and the spare air cylinder 603 and the air cylinder 301 are connected through the adjusting valve 205, so when the air pressure of the air cylinder 301 is higher than that of the spare air cylinder 603, and under the condition that other pipelines run stably, the pressure of the spare air cylinder 603 is adjusted, so that the air pressures of the spare air cylinder 603 and the air cylinder 301 are equal, and the purpose of pressure adjustment is achieved; otherwise the principle is the same.
Further, as shown in fig. 2, the intake end of the relay valve 304 is connected to the gas cylinder 301 or the bypass gas cylinder 60 in the present embodiment; the first air inlet of the double-chamber brake valve 302 is connected with one branch air reservoir 60, and the second air inlet of the double-chamber brake valve 302 is connected with the other branch air reservoir 60. By using the branched gas cylinder 60, a plurality of hydrogen supply branches can be formed, so that the hydrogen supply pressure of each pipeline can be ensured to be enough, the occurrence of insufficient hydrogen supply can be reduced, a stable hydrogen supply system is formed, and the good operation of the brake system 30 of the vehicle is ensured. At the relay valve 304, by connecting a shunt gas cylinder 60, the hydrogen supply pressure of the relay valve 304 can be ensured, the action of the relay valve 304 can be ensured, and the running stability can be improved.
As shown in fig. 2, in this embodiment, a two-way check valve 401 is disposed on a first input pipe of the quick release check valve 40, a first air inlet of the two-way check valve 401 is connected to one of the branched air tanks 60, and a second air inlet of the two-way check valve 401 is connected to the other branched air tank 60.
Specifically, the two branch air cylinders 60 are respectively connected to the input ports of the two air supply pipelines of the two-way check valve 401, one of the air pressure higher pressure can enter the rear wheel brake through the two-way check valve 401 to push the driving rod of the brake air chamber to move (the two-way check valve 401 is provided with two air supply ports and one air outlet, if the pressure of one side of the two air supply ports is higher than that of the other side of the two air supply ports, the air port of the low pressure side is closed by the piston, and the high pressure side flows out to the rear wheel brake through the air outlet to form the required braking action). The use of the bi-directional check valve 401 prevents line damage, air leakage, and mixing of the parking brake pressure and service brake pressure for the desired pressure operation of the vehicle.
As shown in fig. 1 and 2, in this embodiment, a hand brake valve 402 may be installed between the quick release check valve 40 and the air cylinder 301, or between the quick release check valve 40 and the bi-directional check valve 401, and when the hand brake valve is pressed, an air pressure of 390Kpa is provided, and then the air pressure is gradually reduced to ensure that the button brake of the hand brake valve 402 springs up when the pressure gauge reaches 180Kpa to 230 Kpa. In this way, an effect on the parking brake of the vehicle is created and it is ensured that the air pressure of the pipeline is not too low. The emergency deflation operation can be performed through the hand brake valve 402 to prevent the pipe from being broken and leaking, thereby improving the safety.
Further, as shown in fig. 2, the input end of the split gas cylinder 60 in this embodiment is provided with a first check valve 602 flowing in the direction of itself, so that the backflow of hydrogen can be prevented, so as to ensure that the air pressure in the split gas cylinder 60 is sufficient, so as to provide a stable hydrogen supply pipeline, and improve the practicability.
Example two
The present embodiment provides a hydrogen energy vehicle with a hydrogen energy braking system, including the hydrogen energy braking system as described in the first embodiment, wherein hydrogen in the hydrogen energy vehicle is designed into the braking system, and a stable braking system is provided to meet the operation of the air pressure required for braking. Meanwhile, the brake hydrogen cylinder can also be a standby hydrogen cylinder, and has good practicability.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. A hydrogen energy braking system, comprising:
braking a hydrogen cylinder;
a plurality of fuel hydrogen cylinders, which are connected with a fuel cell of the vehicle;
the brake system comprises an air reservoir connected with the brake hydrogen cylinder, a double-cavity brake valve connected with the air reservoir, a quick release valve arranged between a front wheel brake of the vehicle and the double-cavity brake valve, and a relay valve arranged between a rear wheel brake of the vehicle and the double-cavity brake valve, wherein a pressure valve is arranged between the air reservoir and the brake hydrogen cylinder;
the output end of the quick release check valve is connected and arranged on the rear wheel brake, the first input end of the quick release check valve is connected and arranged with the air reservoir, and the second input end of the quick release check valve is communicated and arranged with the relay valve;
the recovery tank is communicated with the brake hydrogen cylinder, the exhaust port of the quick release valve and the exhaust port of the relay valve are connected in parallel and arranged on the recovery tank, and a pressurizing pump is arranged between the recovery tank and the brake hydrogen cylinder;
the output end of the brake hydrogen cylinder is also communicated with an output pipeline of the fuel hydrogen cylinder, and a first electromagnetic valve and a first pressure detector are arranged on a communicating pipeline between the brake hydrogen cylinder and the fuel hydrogen cylinder;
the pipeline between the brake hydrogen cylinder and the air storage cylinder is also provided with a second pressure detector and a gas compressor which is connected with the pressure valve in parallel, and the input end of the gas compressor is provided with a regulating valve.
2. The hydrogen energy braking system of claim 1, wherein: the device is also provided with a plurality of branch gas cylinders and four-way protection valves which are communicated with the branch gas cylinders in parallel, and the four-way protection valves are communicated with the gas cylinders.
3. The hydrogen energy braking system of claim 2, wherein: the air inlet end of the relay valve is connected with the air storage cylinder or the shunt air storage cylinder; the first air inlet of the double-cavity brake valve is connected with one of the branch air storage cylinders, and the second air inlet of the double-cavity brake valve is connected with the other branch air storage cylinder.
4. A hydrogen energy braking system according to claim 3, characterized in that: the first input end pipeline of the quick release check valve is provided with a two-way check valve, a first air inlet of the two-way check valve is connected with one of the branch air storage cylinders, and a second air inlet of the two-way check valve is connected with the other branch air storage cylinder.
5. The hydrogen energy braking system of claim 2, wherein: the input end of the shunt air reservoir is provided with a first one-way valve which circulates towards the self direction.
6. The hydrogen energy braking system of claim 1, wherein: the hydrogen concentration detector and the third pressure detector are arranged on a pipeline between the fuel hydrogen cylinder and the fuel cell of the vehicle, and the switch valve is arranged at the output end of the fuel hydrogen cylinder.
7. The hydrogen energy braking system of claim 1, wherein: the input of recovery jar is provided with the second check valve, the output of recovery jar is provided with the second solenoid valve.
8. A hydrogen powered vehicle having a hydrogen powered braking system comprising a hydrogen powered braking system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311719256.3A CN117400894B (en) | 2023-12-14 | 2023-12-14 | Hydrogen energy braking system and hydrogen energy vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311719256.3A CN117400894B (en) | 2023-12-14 | 2023-12-14 | Hydrogen energy braking system and hydrogen energy vehicle with same |
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| Publication Number | Publication Date |
|---|---|
| CN117400894A CN117400894A (en) | 2024-01-16 |
| CN117400894B true CN117400894B (en) | 2024-03-08 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| KR20050007082A (en) * | 2003-07-11 | 2005-01-17 | 현대자동차주식회사 | Method of controlling for air over hydraulic brake system |
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| CN117400894A (en) | 2024-01-16 |
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