CN114802122A - Hydrogen replacement device, method and vehicle - Google Patents
Hydrogen replacement device, method and vehicle Download PDFInfo
- Publication number
- CN114802122A CN114802122A CN202210350592.4A CN202210350592A CN114802122A CN 114802122 A CN114802122 A CN 114802122A CN 202210350592 A CN202210350592 A CN 202210350592A CN 114802122 A CN114802122 A CN 114802122A
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- hydrogen
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- valve
- replacement
- system controller
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 219
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 219
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 claims abstract description 89
- 238000012360 testing method Methods 0.000 claims description 18
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- 239000007789 gas Substances 0.000 description 11
- 150000002431 hydrogen Chemical class 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 101100520142 Caenorhabditis elegans pin-2 gene Proteins 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
-
- 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
Abstract
The invention discloses a hydrogen replacement device, a hydrogen replacement method and a vehicle. Wherein, hydrogen replacement device includes: the system comprises a fuel cell controller, a replacement switch and a hydrogen system controller, wherein the fuel cell controller is used for acquiring the high-voltage connection state of the whole vehicle from a vehicle controller; the replacement switch is connected with the fuel cell controller, and the fuel cell controller is also used for sending a first opening instruction of the bottleneck valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is pressed down, and sending a first closing instruction of the bottleneck valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is bounced; the hydrogen system controller is used for controlling the opening of the bottle mouth valve according to the first opening instruction of the bottle mouth valve so as to perform hydrogen replacement, and controlling the closing of the bottle mouth valve according to the first closing instruction of the bottle mouth valve so as to stop the hydrogen replacement. The invention can realize the accurate control of the hydrogen replacement process, can prevent the safety problem of hydrogen electricity generation, and can effectively improve the convenience of hydrogen replacement operation.
Description
Technical Field
The invention relates to the technical field of hydrogen replacement, in particular to a hydrogen replacement device, a hydrogen replacement method and a vehicle.
Background
At present, in the fuel cell technology, a hydrogen system and a hydrogen cylinder are generally subjected to pressure maintaining test by using helium or nitrogen in the factory detection process, vehicle equipment can be carried out only after the test is qualified, and then nitrogen pressure maintaining is carried out, so that the air tightness of the whole system is ensured, but after the test is finished, nitrogen is released, and then part of nitrogen generally remains in the hydrogen cylinder and a hydrogen system pipeline, so that the hydrogen replacement needs to be carried out on the hydrogen system before the fuel cell vehicle is debugged, the residual nitrogen is replaced by hydrogen, and the quality requirement of the subsequent fuel cell system debugging hydrogen is ensured.
In the related art, an external power supply is required during hydrogen replacement, but the external power supply is not controllable, so that the hydrogen-electricity safety risk problem exists, and the hydrogen replacement process is not controllable.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a hydrogen replacement device to achieve precise control of the hydrogen replacement process and effectively improve the convenience of the hydrogen replacement operation.
A second object of the invention is to propose a vehicle.
A third object of the present invention is to provide a hydrogen replacement method.
In order to achieve the above object, a first embodiment of the present invention provides a hydrogen replacement device, including:
the fuel cell controller is used for acquiring the high-voltage connection state of the whole vehicle from the whole vehicle controller; the replacement switch is connected with the fuel cell controller, and the fuel cell controller is further used for sending a first opening instruction of a bottleneck valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is pressed down, and sending a first closing instruction of the bottleneck valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is bounced; and the hydrogen system controller is used for controlling the opening of the bottle opening valve according to the first opening instruction of the bottle opening valve so as to perform hydrogen replacement, and controlling the closing of the bottle opening valve according to the first closing instruction of the bottle opening valve so as to stop the hydrogen replacement.
According to the hydrogen replacement device provided by the embodiment of the invention, the hydrogen replacement is realized by acquiring the high-pressure connection state of the whole vehicle and operating the replacement switch by one key when the high pressure of the whole vehicle is in the unconnected state, so that the safety of the hydrogen replacement operation can be ensured, and the convenience of the hydrogen replacement can be improved by one-key operation of the replacement switch.
In order to achieve the above object, a second aspect of the present invention provides a vehicle including the hydrogen replacement device described above.
According to the vehicle provided by the embodiment of the invention, the hydrogen replacement device on the vehicle can realize accurate control of the hydrogen replacement process, can effectively improve the convenience of the hydrogen replacement operation, and can ensure the convenience of the hydrogen replacement operation.
In order to achieve the above object, a third embodiment of the present invention provides a hydrogen replacement method, including: acquiring a high-voltage connection state of the whole vehicle from a vehicle controller; when the whole vehicle high pressure is not connected and a replacement instruction is received, sending a first opening instruction of a bottle mouth valve to a hydrogen system controller, and when the whole vehicle high pressure is not connected and a replacement stop instruction is received, sending a first closing instruction of the bottle mouth valve to the hydrogen system controller; and controlling the opening of the bottle mouth valve according to the first opening instruction of the bottle mouth valve so as to perform hydrogen replacement, and controlling the closing of the bottle mouth valve according to the first closing instruction of the bottle mouth valve so as to stop hydrogen replacement.
According to the hydrogen replacement method provided by the embodiment of the invention, the hydrogen replacement is realized by acquiring the high-pressure connection state of the whole vehicle and receiving the replacement instruction when the high pressure of the whole vehicle is in the unconnected state, so that the safety of the hydrogen replacement operation can be ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a conventional hydrogen exchange device;
FIG. 2 is a block diagram showing the structure of a hydrogen replacement device according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating the operation of a hydrogen replacement device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an external connection of a hydrogen replacement device according to an embodiment of the present invention;
FIG. 5 is a block diagram of a vehicle according to an embodiment of the invention;
fig. 6 is a flow chart of a hydrogen replacement method according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As described in the background art, currently, helium gas or nitrogen gas is generally used for pressure maintaining test in the factory testing process of a hydrogen system and a hydrogen cylinder, vehicle equipment can be performed only after the test is qualified, and then nitrogen pressure maintaining is performed, so as to ensure the air tightness of the whole system, but after the test is completed, nitrogen gas is released, and then part of nitrogen gas generally remains in the hydrogen cylinder and the hydrogen system pipeline, so that the hydrogen gas replacement needs to be performed on the hydrogen system before the fuel cell vehicle is debugged, and the residual gas is replaced by hydrogen gas, so as to ensure the quality requirement of the subsequent fuel cell system debugging hydrogen gas.
At present, when a vehicle performs hydrogen related replacement operation, the hydrogen related replacement operation is mainly performed by opening a bottle mouth valve through an external 24V power supply, and a main external schematic diagram of the hydrogen related replacement operation is shown in fig. 1. In fig. 1, communication ports PIN _1 and PIN _2 of fuel cell controller FCU are connected to communication ports PIN _1 and PIN _2 of hydrogen system controller HMS, respectively, through which the fuel cell controller communicates with the hydrogen system controller, e.g. sends a bottleneck valve open/close command. PIN _3 and PIN _4 ports of the fuel cell controller are respectively connected with a finished automobile power supply after the finished automobile is electrified, and the fuel cell controller supplies power through the finished automobile power supply. The hydrogen system controller is connected with an external power supply, wherein the voltage of the external power supply is 24V. When the hydrogen replacement device performs hydrogen replacement, the main operation steps are as follows: releasing the nitrogen after pressure maintaining, stopping releasing when the pressure is released to 0.2Mpa, then filling with hydrogen, releasing the hydrogen by externally connecting a 24V low-voltage power to a bottle mouth valve after the pressure is filled to 3Mpa, stopping releasing when the pressure is released to 0.2Mpa, repeating the step of filling with hydrogen, and finishing hydrogen replacement after repeating the step twice.
However, this method has the following problems: when the bottle mouth valve releases hydrogen, 24V low-voltage electricity needs to be externally connected, and the problem of hydrogen-electricity safety risk is easily caused due to the need of an external power supply; secondly, in the hydrogen replacement process, when the gas is released to the preset gas pressure of 0.2Mpa, the pressure in the cylinder needs to be judged according to the gas release noise, so that a large error exists, the gas replacement is easy to be insufficient, and the gas quality in the cylinder is impure, so that unnecessary interference is easy to be caused to the subsequent debugging of the fuel cell system, and even the performance of the fuel cell system is influenced.
Therefore, the invention provides a hydrogen replacement device, a hydrogen replacement method and a vehicle, wherein the hydrogen replacement device or the hydrogen replacement method does not need an external power supply, can accurately detect the air pressure in a bottle through a pressure sensor, so that the accurate control of hydrogen replacement is realized, the hydrogen replacement is more sufficient, and the hydrogen replacement operation is carried out when the high pressure of the whole vehicle is not connected by acquiring the high-pressure connection state of the whole vehicle, so that the problem of hydrogen and electricity safety risks can be prevented, and the convenience of hydrogen replacement can be improved through one-key operation of a replacement switch.
A hydrogen substituting device, a method, and a vehicle according to an embodiment of the present invention will be described with reference to fig. 2 to 6.
Referring to fig. 2, a hydrogen replacement device 100 according to an embodiment of the present invention may include a fuel cell controller 10, a replacement switch 20, and a hydrogen system controller 30. The fuel cell controller 10 is used for acquiring a high-voltage connection state of the whole vehicle from the whole vehicle controller; the replacement switch 20 is connected with the fuel cell controller 10, and the fuel cell controller 10 is further configured to send a first opening instruction of the bottleneck valve to the hydrogen system controller 30 when the entire vehicle is not connected at high voltage and the replacement switch 20 is pressed, and send a first closing instruction of the bottleneck valve to the hydrogen system controller 30 when the entire vehicle is not connected at high voltage and the replacement switch 20 is sprung; the hydrogen system controller 30 controls the opening of the mouthpiece valve according to the first opening instruction of the mouthpiece valve to perform hydrogen gas replacement, and controls the closing of the mouthpiece valve according to the first closing instruction of the mouthpiece valve to stop the hydrogen gas replacement.
In an embodiment of the present invention, the hydrogen replacement device 100 of the embodiment of the present invention further includes the vehicle control unit, which is configured to power on the self-test after the vehicle is started, and enable the power on self-test of the fuel cell controller 10 after the self-test has no fault.
Specifically, as shown in fig. 3, when the vehicle control unit is in the ON gear, the vehicle control unit performs power-ON self-test, and after the vehicle control unit detects that there is no low-voltage self-test fault, the fuel cell controller 10 is enabled, and after the fuel cell controller 10 is enabled, the power-ON self-test is performed.
As shown in fig. 4, the fuel cell controller 10 is further externally connected to a replacement switch 20 to perform a hydrogen replacement one-touch operation. Specifically, as shown in fig. 3, after the fuel cell controller 10 is powered on and has no fault in the self-test, the high-voltage connection state of the entire vehicle may be acquired from the entire vehicle controller, and when it is detected that the replacement switch is pressed by the user under the condition that the high-voltage connection state of the entire vehicle is the unconnected state, a first opening command of the bottleneck valve is sent to the hydrogen system controller 30. Of course, the fuel cell controller 10 may also send the first closing instruction of the bottleneck valve to the hydrogen system controller 30 when detecting that the replacement switch is sprung up under the condition that the high-pressure connection state of the entire vehicle is the disconnection state. When the hydrogen system controller 30 receives a first opening instruction of the bottleneck valve, the hydrogen system controller controls to open hydrogen gas replacement, and when the hydrogen system controller 30 receives a first closing instruction of the bottleneck valve, the hydrogen system controller controls to stop hydrogen gas replacement.
It should be noted that, in the present embodiment, the fuel cell controller 10 determines the validity of the operation of the replacement switch 20 only when it is determined that the high-voltage connection state of the entire vehicle is the disconnection state. That is, when the fuel cell controller 10 is connected to the entire vehicle at a high voltage, no matter the replacement switch 20 is pressed or bounced, the fuel cell controller 10 will not be triggered to send a bottleneck valve opening command or a bottleneck valve closing command, so as to control to open hydrogen replacement or stop hydrogen replacement.
In this embodiment, through obtaining whole car high pressure connection state and regard it as the hydrogen replacement condition, can improve the security of hydrogen replacement to carry out hydrogen replacement control through the replacement switch, can improve the convenience of hydrogen replacement operation.
In one embodiment of the present invention, the apparatus further includes a pressure sensor connected to the fuel cell controller 10 for detecting the air pressure in the hydrogen cylinders.
The fuel cell controller 10 is further configured to send a first closing instruction of the bottleneck valve to the hydrogen system controller 30 when the entire vehicle is not connected at high pressure and the air pressure in the hydrogen cylinder is lower than a first preset air pressure value.
Specifically, during hydrogen replacement, the pressure in the hydrogen cylinder can be detected through the pressure sensor, so that accurate control of hydrogen replacement is realized. As shown in fig. 3, when the high pressure of the whole vehicle is not connected, the fuel cell controller 10 may obtain the pressure value in the hydrogen cylinder detected by the pressure sensor in real time, and perform detection and analysis on the pressure value. When the fuel cell controller 10 detects that the pressure in the hydrogen cylinder is lower than a first predetermined pressure value (e.g., 0.2Mpa), it sends a first closing command to the bottleneck valve to stop the hydrogen replacement.
After the pressure maintaining test is carried out and the hydrogen replacement operation is finished, if the fuel cell needs to be started or shut down, if hydrogen needed by reaction needs to be provided or stopped to be provided for the fuel cell, corresponding control can be carried out through the fuel cell controller and the vehicle control unit.
In an embodiment of the present invention, the fuel cell controller 10 is further configured to receive a fuel cell start-up signal from the vehicle controller when the vehicle is in high-voltage connection, and send a second opening command of the bottleneck valve to the hydrogen system controller 30 according to the fuel cell start-up signal, so that the hydrogen system controller 30 controls the bottleneck valve to open according to the second opening command of the bottleneck valve, so as to provide hydrogen to the fuel cell, or receive a fuel cell shutdown signal from the vehicle controller when the vehicle is in high-voltage connection, and send a second closing command of the bottleneck valve to the hydrogen system controller 30 according to the second closing command of the bottleneck valve, so that the hydrogen system controller 30 controls the bottleneck valve to close according to the second closing command of the bottleneck valve, so as to stop providing hydrogen to the fuel cell.
Specifically, when a fuel cell is required to be started, the vehicle controller may send a fuel cell start-up signal to the fuel cell controller 10, and after receiving the fuel cell start-up signal, the fuel cell controller 10 sends a second opening instruction of the bottleneck valve to the hydrogen system controller 30, so as to provide hydrogen required for reaction to the fuel cell through the second opening instruction of the bottleneck valve. Of course, the supply of hydrogen gas required for the reaction to the fuel cell may be terminated at any time. Specifically, when there is a fuel cell shutdown request, the vehicle controller may send a fuel cell shutdown signal to the fuel cell controller 10, and after receiving the fuel cell shutdown signal, the fuel cell controller 10 sends a second bottleneck valve shutdown command to the hydrogen system controller 30, so as to terminate the supply of hydrogen required for the reaction to the fuel cell through the second bottleneck valve shutdown command.
In an embodiment of the present invention, the fuel cell controller 10 is further configured to send a third closing command of the bottleneck valve to the hydrogen system controller 30 when the entire vehicle is connected at a high pressure and the gas pressure in the hydrogen cylinder is lower than a second preset gas pressure value, so that the hydrogen system controller 30 controls the bottleneck valve to close according to the third closing command of the bottleneck valve to stop the release of hydrogen, wherein the second preset gas pressure value is greater than the first preset gas pressure value.
Specifically, after the fuel cell is turned on, in a high-voltage connection state of the entire vehicle, if the fuel cell controller 10 detects that the air pressure in the hydrogen cylinder is lower than a second preset air pressure value (e.g., 2Mpa), the hydrogen release needs to be stopped, and therefore, the fuel cell controller 10 may send a third closing instruction of the cylinder valve to the hydrogen system controller 30, so that the hydrogen system controller 30 controls the cylinder valve to close according to the third closing instruction of the cylinder valve, thereby stopping the hydrogen release.
After the hydrogen system controller 30 controls the opening of the bottleneck valve according to the first opening instruction or the second opening instruction of the bottleneck valve, the vehicle key is switched to the OFF gear, and the vehicle controller, the fuel cell controller 10 and the hydrogen system controller 30 are in the non-enabled state and are in power-OFF dormancy, so that energy is saved.
Optionally, after the hydrogen system controller 30 controls the bottleneck valve to be closed according to the first closing instruction/the second closing instruction/the third closing instruction of the bottleneck valve, the vehicle key is switched to the OFF gear, and the vehicle controller, the fuel cell controller 10 and the hydrogen system controller 30 are in the disabled state and are in the power-OFF sleep state, so that energy is effectively saved.
In one embodiment of the invention, the apparatus further comprises: and the power supply unit is respectively connected with the hydrogen system controller 30 and the bottle mouth valve and is used for supplying power to the hydrogen system controller 30 and the bottle mouth valve.
Specifically, the power supply of the bottle opening valve in the embodiment does not need to be supplied by an external power supply, and only needs to be supplied by an original 24V power supply in the vehicle. The original 24V power supply in this embodiment can supply power to the hydrogen system controller 30 and also to the bottle opening valve. In this embodiment, the bottleneck valve and the hydrogen system controller 30 are powered by the original 24V power supply, so as to prevent the occurrence of the hydrogen-electricity safety risk.
In summary, the hydrogen replacement device according to the embodiment of the present invention does not need an external power supply, and performs hydrogen replacement operation when the entire vehicle is not connected at high voltage by obtaining the connection state of the entire vehicle at high voltage, so as to prevent the hydrogen-electricity safety risk problem, and accurately detects the air pressure in the cylinder through the pressure sensor, thereby achieving accurate control of hydrogen replacement, making hydrogen replacement more sufficient, and achieving convenience of hydrogen replacement through one-key operation of the replacement switch.
Further, as shown in fig. 5, a vehicle 1000 according to an embodiment of the present invention may include the hydrogen replacement device 100 described above.
According to the vehicle provided by the embodiment of the invention, the hydrogen replacement device on the vehicle can realize accurate control of the hydrogen replacement process, can effectively improve the convenience of hydrogen replacement operation, and can prevent the generation of hydrogen-electricity safety risk problems.
Further, the present invention also provides a hydrogen replacement method, as shown in fig. 6, the hydrogen replacement method may include the steps of:
and S1, acquiring the high-voltage connection state of the whole vehicle from the vehicle controller.
And S2, when the high pressure of the whole vehicle is not connected and the replacement instruction is received, sending a first opening instruction of the bottle mouth valve to the hydrogen system controller, and when the high pressure of the whole vehicle is not connected and the replacement stop instruction is received, sending a first closing instruction of the bottle mouth valve to the hydrogen system controller.
And S3, controlling the opening of the bottle mouth valve according to the first opening instruction of the bottle mouth valve so as to perform hydrogen replacement, and controlling the closing of the bottle mouth valve according to the first closing instruction of the bottle mouth valve so as to stop hydrogen replacement.
In one embodiment of the invention, the method further comprises: acquiring the air pressure in the hydrogen cylinder; and when the whole vehicle is not connected at high pressure and the air pressure in the hydrogen cylinder is lower than a first preset air pressure value, sending a first closing instruction of a bottle mouth valve to the hydrogen system controller.
Optionally, the method further includes: when the whole vehicle is connected at high pressure, receiving a fuel cell starting signal from the whole vehicle controller, and sending a second opening instruction of the bottleneck valve to the hydrogen system controller according to the fuel cell starting signal, so that the hydrogen system controller controls the bottleneck valve to open according to the second opening instruction of the bottleneck valve to provide hydrogen for the fuel cell; or when the whole vehicle is in high-voltage connection, receiving a fuel cell shutdown signal from the whole vehicle controller, and sending a second closing instruction of the bottleneck valve to the hydrogen system controller according to the fuel cell shutdown signal, so that the hydrogen system controller controls the bottleneck valve to be closed according to the second closing instruction of the bottleneck valve to stop providing hydrogen for the fuel cell; or when the whole vehicle is connected at high pressure and the air pressure in the hydrogen cylinder is lower than a second preset air pressure value, sending a third closing instruction of the bottle mouth valve to the hydrogen system controller, so that the hydrogen system controller controls the bottle mouth valve to be closed according to the third closing instruction of the bottle mouth valve to stop hydrogen release, wherein the second preset air pressure value is larger than the first preset air pressure value.
It should be noted that, for the specific implementation of the hydrogen replacement method according to the embodiment of the present invention, reference may be made to the specific implementation of the hydrogen replacement device described above, and details are not described here again.
In summary, the hydrogen replacement method provided by the embodiment of the invention does not need an external power supply, and performs hydrogen replacement operation when the high voltage of the whole vehicle is not connected by acquiring the high voltage connection state of the whole vehicle, so that the problem of hydrogen-electricity safety risk can be prevented, and accurate detection of the air pressure in the bottle can be realized through the pressure sensor, so that accurate control of hydrogen replacement is realized, and hydrogen replacement is more sufficient.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A hydrogen substitution apparatus, comprising:
the fuel cell controller is used for acquiring the high-voltage connection state of the whole vehicle from the whole vehicle controller;
the replacement switch is connected with the fuel cell controller, and the fuel cell controller is also used for sending a first opening instruction of a bottle opening valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is pressed down, and sending a first closing instruction of the bottle opening valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the replacement switch is bounced;
and the hydrogen system controller is used for controlling the opening of the bottle opening valve according to the first opening instruction of the bottle opening valve so as to perform hydrogen replacement, and controlling the closing of the bottle opening valve according to the first closing instruction of the bottle opening valve so as to stop the hydrogen replacement.
2. The apparatus of claim 1, wherein the apparatus further comprises:
the pressure sensor is connected with the fuel cell controller and is used for detecting the air pressure in the hydrogen cylinder;
and the fuel cell controller is also used for sending a first closing instruction of the bottleneck valve to the hydrogen system controller when the whole vehicle is not connected at high pressure and the air pressure in the hydrogen cylinder is lower than a first preset air pressure value.
3. The apparatus of claim 2, wherein the fuel cell controller is further configured to:
when the whole vehicle is connected at a high voltage, receiving a fuel cell starting signal from the whole vehicle controller, and sending a second opening instruction of a bottleneck valve to the hydrogen system controller according to the fuel cell starting signal, so that the hydrogen system controller controls the bottleneck valve to open according to the second opening instruction of the bottleneck valve to provide hydrogen for the fuel cell; alternatively, the first and second electrodes may be,
and when the whole vehicle is in high-voltage connection, receiving a fuel cell shutdown signal from the whole vehicle controller, and sending a second bottleneck valve closing instruction to the hydrogen system controller according to the fuel cell shutdown signal, so that the hydrogen system controller controls the bottleneck valve to be closed according to the second bottleneck valve closing instruction, and the hydrogen supply to the fuel cell is stopped.
4. The apparatus of claim 3, wherein the fuel cell controller is further configured to:
and when the whole vehicle is connected at high pressure and the air pressure in the hydrogen cylinder is lower than a second preset air pressure value, sending a third closing instruction of a bottle mouth valve to the hydrogen system controller, so that the hydrogen system controller controls the bottle mouth valve to be closed according to the third closing instruction of the bottle mouth valve to stop hydrogen release, wherein the second preset air pressure value is larger than the first preset air pressure value.
5. The apparatus of claim 1, wherein the vehicle control unit is configured to power-on self-test after vehicle start-up and to enable the fuel cell controller power-on self-test after the self-test is faultless.
6. The apparatus of claim 1, wherein the apparatus further comprises:
and the power supply unit is respectively connected with the hydrogen system controller and the bottleneck valve and is used for supplying power to the hydrogen system controller and the bottleneck valve.
7. A vehicle characterized by comprising the hydrogen replacement device according to any one of claims 1 to 6.
8. A hydrogen replacement method, characterized in that the method comprises:
acquiring a high-voltage connection state of the whole vehicle from a vehicle controller;
when the whole vehicle high pressure is not connected and a replacement instruction is received, sending a first opening instruction of a bottle mouth valve to a hydrogen system controller, and when the whole vehicle high pressure is not connected and a replacement stop instruction is received, sending a first closing instruction of the bottle mouth valve to the hydrogen system controller;
and controlling the opening of the bottle mouth valve according to the first opening instruction of the bottle mouth valve so as to perform hydrogen replacement, and controlling the closing of the bottle mouth valve according to the first closing instruction of the bottle mouth valve so as to stop hydrogen replacement.
9. The method of claim 8, wherein the method further comprises:
acquiring the air pressure in the hydrogen cylinder;
and when the whole vehicle is not connected at high pressure and the air pressure in the hydrogen cylinder is lower than a first preset air pressure value, sending a first closing instruction of the bottleneck valve to the hydrogen system controller.
10. The method of claim 9, wherein the method further comprises:
when the whole vehicle is connected at a high voltage, receiving a fuel cell starting signal from the whole vehicle controller, and sending a second opening instruction of a bottleneck valve to the hydrogen system controller according to the fuel cell starting signal, so that the hydrogen system controller controls the bottleneck valve to open according to the second opening instruction of the bottleneck valve to provide hydrogen for the fuel cell; alternatively, the first and second electrodes may be,
when the whole vehicle is in high-voltage connection, receiving a fuel cell shutdown signal from the whole vehicle controller, and sending a second bottleneck valve closing instruction to the hydrogen system controller according to the fuel cell shutdown signal, so that the hydrogen system controller controls the bottleneck valve to be closed according to the second bottleneck valve closing instruction, and the hydrogen supply to the fuel cell is stopped; alternatively, the first and second electrodes may be,
and when the whole vehicle is connected at high pressure and the air pressure in the hydrogen cylinder is lower than a second preset air pressure value, sending a third closing instruction of a bottle mouth valve to the hydrogen system controller, so that the hydrogen system controller controls the bottle mouth valve to be closed according to the third closing instruction of the bottle mouth valve to stop hydrogen release, wherein the second preset air pressure value is larger than the first preset air pressure value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210350592.4A CN114802122A (en) | 2022-04-02 | 2022-04-02 | Hydrogen replacement device, method and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210350592.4A CN114802122A (en) | 2022-04-02 | 2022-04-02 | Hydrogen replacement device, method and vehicle |
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| CN114802122A true CN114802122A (en) | 2022-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117053086A (en) * | 2023-08-10 | 2023-11-14 | 广州汽车集团股份有限公司 | Gas cylinder group system, gas quality measuring method and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117053086A (en) * | 2023-08-10 | 2023-11-14 | 广州汽车集团股份有限公司 | Gas cylinder group system, gas quality measuring method and vehicle |
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