CN111016662B - Fuel cell passenger car power-off control method and system - Google Patents
Fuel cell passenger car power-off control method and system Download PDFInfo
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- CN111016662B CN111016662B CN201911377198.4A CN201911377198A CN111016662B CN 111016662 B CN111016662 B CN 111016662B CN 201911377198 A CN201911377198 A CN 201911377198A CN 111016662 B CN111016662 B CN 111016662B
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- fuel cell
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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
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- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a fuel cell bus power-off control method and a fuel cell bus power-off control system, which comprise the following steps: after the key electric signal of the fuel cell bus disappears, if the fuel cell system is in a shutdown state or a cold shutdown state, the vehicle controller does not send a power-off command, and after the fuel cell system finishes shutdown action, the vehicle controller sends a high-voltage relay disconnection command to the battery management system; if the fuel cell system is not started, the vehicle control unit directly sends a high-voltage relay disconnection instruction to the battery management system to complete the power-off process. The invention has the beneficial effects that: the control method can effectively avoid the problem of damage to the fuel cell caused by sudden high-voltage switching when the fuel cell system is not stopped, and ensure the service life of the fuel cell system.
Description
Technical Field
The invention relates to the technical field of electronic control of fuel cell passenger cars, in particular to a fuel cell passenger car power-off control method and system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fuel cell bus is characterized in that the fuel cell bus is provided with a set of multi-energy power driving system which comprises a power battery, a fuel cell, a driving motor and the like.
The inventor finds that the phenomenon of sudden high voltage interruption when a fuel cell is not in a shutdown state exists in the power-off process of a high-voltage system of a current fuel cell passenger car, and the irreversible damage of an inner membrane electrode caused by sudden shutdown of the fuel cell due to the sudden interruption of the high voltage at the output end of the fuel cell can cause the reliability reduction and the service life shortening of the fuel cell system due to the lower electricity caused by improper power-off control of the system.
Disclosure of Invention
In order to solve the problems, the invention discloses a fuel cell passenger car power-off control method and a fuel cell passenger car power-off control system, which can effectively avoid the problem of sudden high voltage switching when the fuel cell system is not stopped and ensure the service life of the fuel cell system.
In some embodiments, the following technical scheme is adopted:
a fuel cell passenger vehicle power-off control method comprises the following steps:
after the key electric signal of the fuel cell bus disappears, if the fuel cell system is in a shutdown state or a cold shutdown state, the vehicle controller does not send a power-off command, and after the fuel cell system finishes shutdown action, the vehicle controller sends a high-voltage relay disconnection command to the battery management system; if the fuel cell system is not started, the vehicle control unit directly sends a high-voltage relay disconnection instruction to the battery management system to complete the power-off process.
Further, when the fuel cell system is in a shutdown state or a cold shutdown state, an instrument connected with the vehicle control unit displays the working state of the fuel cell and a warning word for not closing the total power supply.
Further, after receiving the feedback of the completion of the shutdown of the fuel cell system, the vehicle control unit sends a high voltage switching instruction to the battery management system; and if the waiting time for the whole vehicle controller to receive the feedback exceeds the first preset time, forcibly sending a high-voltage switching instruction.
Further, after the vehicle control unit sends a high-voltage relay disconnection instruction to the battery management system, the battery management system performs disconnection operation of the high-voltage relay according to the current battery current state of the vehicle.
Further, after the instrument screen is turned off and waits for a second preset time, the hand-dialing main switch is turned off, and the power-off process is finished.
In other embodiments, the following technical solutions are adopted:
a fuel cell passenger vehicle power-down control system comprising a vehicle control unit configured to:
after the key electric signal of the fuel cell bus disappears, if the fuel cell system is in a shutdown or cold shutdown state, a power-off command is not sent, and a high-voltage relay disconnection command is sent to the battery management system after the fuel cell system finishes shutdown action; and if the fuel cell system is not started, directly sending a high-voltage relay disconnection instruction to the cell management system to finish the power-off process.
In other embodiments, the following technical solutions are adopted:
a fuel cell passenger car comprises the power-off control system.
In other embodiments, the following technical solutions are adopted:
a fuel cell passenger car adopts the power-off control method.
Compared with the prior art, the invention has the beneficial effects that:
the control method can effectively avoid the problem of damage to the fuel cell caused by sudden high-voltage switching when the fuel cell system is not stopped, and ensure the service life of the fuel cell system.
At fuel cell passenger train start fuel cell system mode parking under the electric in-process, through instrument display warning typeface and puting up prompt message in hand dial master switch department, can effectively remind staff's present fuel cell's operating condition, avoid the damage that the human factor leads to because of cutting high pressure suddenly and cause fuel cell.
Drawings
Fig. 1 is a schematic diagram of a fuel cell passenger car power-off control system according to an embodiment of the invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
Referring to fig. 1, the fuel cell bus power-off control system comprises a vehicle controller, an instrument, a battery management system, a power battery, a fuel cell system, a fuel cell controller and a high-voltage relay, wherein the instrument, the vehicle controller, the battery management system and the fuel cell controller are communicated with each other through a CAN bus; the low-voltage circuit is connected and disconnected with the low-voltage power supply of the whole vehicle through the hand-dialing main switch, a notice board of the fuel cell system needs to be posted at the position of the hand-dialing switch, and the notice board indicates that the hand-dialing switch main power supply is turned off after the screen of the instrument is turned off.
Because the fuel cell has a shutdown process after the key is turned off, and before the shutdown of the fuel cell is completed, the instrument screen prompts 'do not need to close the main power supply', the purpose of posting the notice board is to warn a driver not to directly close the main power supply of the hand-operated switch before the shutdown of the fuel cell is not completed.
Based on the fuel cell passenger car power-off control system, in one or more embodiments, a fuel cell passenger car power-off control method is disclosed, which specifically comprises the following steps:
(1) closing a key ON gear of the fuel cell bus;
the key electric signal is divided into three signals of OFF, ON and Start, when the key electric signal is in ON gear, all electric appliances of the whole vehicle have power sources, and the Start is to Start the vehicle.
(2) The whole vehicle controller enters a judging mode;
(3) when the whole vehicle is powered off, if the fuel cell system is in a normal shutdown state or a cold shutdown state, the whole vehicle controller does not send a power-off instruction, the instrument does not turn off the screen, and displays a warning word that the fuel cell is shut down and does not need to turn off a main switch, waits for the shutdown completion of the fuel cell system, and after receiving the shutdown feedback state of the fuel cell controller, the whole vehicle controller sends a high-voltage switching instruction to the battery management system;
and if the waiting time of the whole vehicle controller exceeds the preset first time, forcibly sending a high-voltage switching instruction. The battery management system controls the corresponding high-voltage relay to perform the disconnection operation. And after the instrument screen is turned off and waits for the second preset time, the hand-dialing main switch is turned off, and the power-off process is finished.
When the whole vehicle is powered off, if the fuel cell system is not started, the whole vehicle controller sends a power-off instruction, the instrument is in a black screen, and the battery management system controls the corresponding high-voltage relay to perform disconnection operation. And after waiting for the preset second time, closing the hand-dialing main switch, and finishing the power-off process.
Example two
In one or more embodiments, a fuel cell passenger vehicle power-off control system is disclosed, which includes a vehicle control unit configured to execute a fuel cell passenger vehicle power-off control method described in example one; the method specifically comprises the following steps:
after the key electric signal of the fuel cell bus disappears, if the fuel cell system is in a shutdown or cold shutdown state, a power-off command is not sent, and a high-voltage relay disconnection command is sent to the battery management system after the fuel cell system finishes shutdown action; and if the fuel cell system is not started, directly sending a high-voltage relay disconnection instruction to the cell management system to finish the power-off process.
In other embodiments, a fuel cell passenger vehicle is disclosed that includes the aforementioned power down control system; alternatively, the fuel cell passenger car power-off control method described in embodiment one is adopted.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (4)
1. A fuel cell passenger vehicle power-off control method is characterized by comprising the following steps:
after a key electric signal of a fuel cell bus disappears, the vehicle controller enters a judging mode, if the fuel cell system is in a shutdown or cold shutdown state, the vehicle controller does not send a power-off command, an instrument connected with the vehicle controller does not blank, and displays the working state of the fuel cell and a warning word of not closing a main switch, after the fuel cell system finishes shutdown action, the vehicle controller receives feedback of the completion of the shutdown of the fuel cell system, and then the vehicle controller sends a high-voltage relay disconnection command to the battery management system; if the fuel cell system is not started, the vehicle control unit directly sends a high-voltage relay disconnection instruction to the battery management system to complete the power-off process; if the waiting time for the whole vehicle controller to receive the feedback exceeds a first preset time, forcibly sending a high-voltage switching instruction; after the vehicle controller sends a high-voltage relay disconnection instruction to the battery management system, the battery management system performs disconnection operation of the high-voltage relay according to the current battery current state of the vehicle;
and after the instrument screen is turned off and waits for the second preset time, the hand-dialing main switch is turned off, and the power-off process is finished.
2. A fuel cell passenger vehicle power-off control system, comprising a vehicle control unit configured to:
after the key electric signal of the fuel cell bus disappears, if the fuel cell system is in a shutdown or cold shutdown state, a power-off command is not sent, and a high-voltage relay disconnection command is sent to the battery management system after the fuel cell system finishes shutdown action; if the fuel cell system is not started, a high-voltage relay disconnection instruction is directly sent to the battery management system to complete the power-off process; if the waiting time for the whole vehicle controller to receive the feedback exceeds a first preset time, forcibly sending a high-voltage switching instruction; after the vehicle control unit sends a high-voltage relay disconnection instruction to the battery management system, the battery management system performs disconnection operation of the high-voltage relay according to the current battery current state of the vehicle.
3. A fuel cell passenger vehicle comprising the power-off control system according to claim 2.
4. A fuel cell passenger vehicle characterized by adopting the power-off control method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911377198.4A CN111016662B (en) | 2019-12-27 | 2019-12-27 | Fuel cell passenger car power-off control method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911377198.4A CN111016662B (en) | 2019-12-27 | 2019-12-27 | Fuel cell passenger car power-off control method and system |
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| Publication Number | Publication Date |
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| CN111016662A CN111016662A (en) | 2020-04-17 |
| CN111016662B true CN111016662B (en) | 2021-10-26 |
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| CN201911377198.4A Active CN111016662B (en) | 2019-12-27 | 2019-12-27 | Fuel cell passenger car power-off control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114670642A (en) * | 2022-03-23 | 2022-06-28 | 江铃汽车股份有限公司 | Electric vehicle mode control method, system, computer and readable storage medium |
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| CN106627214A (en) * | 2016-11-29 | 2017-05-10 | 厦门金龙旅行车有限公司 | Control method for commercial vehicles using fuel batteries |
| CN106882072A (en) * | 2017-03-23 | 2017-06-23 | 北京新能源汽车股份有限公司 | Control method and control device for power-off protection of fuel cell system |
| CN108973685A (en) * | 2017-06-02 | 2018-12-11 | 湖南中车时代电动汽车股份有限公司 | A kind of delay cut-off control circuit and method for fuel cell integral new-energy passenger |
| CN110370989A (en) * | 2019-06-26 | 2019-10-25 | 武汉格罗夫氢能汽车有限公司 | Electricity strategy under a kind of fuel cell car high pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102575394B1 (en) * | 2018-03-14 | 2023-09-06 | 현대자동차주식회사 | Stop control method for fuelcell system |
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- 2019-12-27 CN CN201911377198.4A patent/CN111016662B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627214A (en) * | 2016-11-29 | 2017-05-10 | 厦门金龙旅行车有限公司 | Control method for commercial vehicles using fuel batteries |
| CN106882072A (en) * | 2017-03-23 | 2017-06-23 | 北京新能源汽车股份有限公司 | Control method and control device for power-off protection of fuel cell system |
| CN108973685A (en) * | 2017-06-02 | 2018-12-11 | 湖南中车时代电动汽车股份有限公司 | A kind of delay cut-off control circuit and method for fuel cell integral new-energy passenger |
| CN110370989A (en) * | 2019-06-26 | 2019-10-25 | 武汉格罗夫氢能汽车有限公司 | Electricity strategy under a kind of fuel cell car high pressure |
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| CN111016662A (en) | 2020-04-17 |
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Address after: 252000 No.261 Huanghe Road, economic development zone, Liaocheng City, Shandong Province Patentee after: Zhongtong bus Limited by Share Ltd. Address before: 252000 No.261 Huanghe Road, economic development zone, Liaocheng City, Shandong Province Patentee before: ZHONGTONG BUS HOLDING Co.,Ltd. |
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