CN114590175A - System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery - Google Patents

System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery Download PDF

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Publication number
CN114590175A
CN114590175A CN202210404590.9A CN202210404590A CN114590175A CN 114590175 A CN114590175 A CN 114590175A CN 202210404590 A CN202210404590 A CN 202210404590A CN 114590175 A CN114590175 A CN 114590175A
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China
Prior art keywords
hydrogen
pile
fuel cell
battery
whole vehicle
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Pending
Application number
CN202210404590.9A
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Chinese (zh)
Inventor
李飞强
张国强
魏来
戴丽君
赵兴旺
方川
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Beijing Sinohytec Co Ltd
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Beijing Sinohytec Co Ltd
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Publication date
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Priority to CN202210404590.9A priority Critical patent/CN114590175A/en
Publication of CN114590175A publication Critical patent/CN114590175A/en
Pending legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a system for ensuring hydrogen-air pressure difference after the power failure of a whole vehicle by a DCDC integrated battery, which comprises a DCDC module, a battery, a fuel battery controller, a hydrogen discharge valve, a galvanic pile and a pile-entering hydrogen flow controller; the DCDC module supplies power to the input end and connects the whole car and battery, form the uninterrupted power supply, when the power supply of the whole car is normal, the DCDC module supplies power for the fuel cell controller while charging for the battery, when the power supply of the whole car is cut off, the DCDC module uses the battery electric energy to supply power for the fuel cell controller; the fuel cell controller controls and supplies power to the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller; the input end of the pile-entering hydrogen flow control valve is connected with a hydrogen tank, the output end of the pile-entering hydrogen flow control valve is connected with a pile hydrogen inlet, and the pile hydrogen outlet is connected with a hydrogen discharge valve. The invention ensures that the fuel cell system can still reduce the hydrogen pressure in the galvanic pile to the normal pressure range when the power supply of the whole vehicle is suddenly interrupted.

Description

System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a system for ensuring hydrogen-air pressure difference after the power failure of a whole vehicle by a DCDC integrated battery.
Background
At present, with the wide application of electric vehicles, various battery technologies are widely developed, and the battery technologies are innovated, the fuel cell can be widely applied because the fuel cell can directly convert chemical energy into electric energy, and with the popularization of the fuel cell, when the external power supply of the fuel cell is interrupted or the power supply is abnormal in use, the air end supply is immediately stopped, and at the moment, the pressure of a hydrogen tank still exists, so that the pressure of the hydrogen side is still kept in operation, the damage to a fuel cell system is overlarge, and the reliable operation of the fuel cell system is not facilitated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a system for ensuring the hydrogen-air pressure difference of a whole vehicle after power failure by using a DCDC integrated battery, aiming at the defects of the prior art.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a system for ensuring hydrogen-air pressure difference after power failure of a whole vehicle by a DCDC integrated battery comprises a DCDC module, a battery, a fuel battery controller, a hydrogen discharge valve, a galvanic pile and a pile-entering hydrogen flow controller;
the DCDC module supplies power to the input end and connects the whole vehicle power supply and the battery to form an uninterruptible power supply, when the whole vehicle is supplied with power normally, the DCDC module supplies power to the fuel cell controller while charging the battery, and when the whole vehicle is interrupted in power supply, the DCDC module supplies power to the fuel cell controller by using the electric energy of the battery;
the fuel cell controller controls and supplies power to the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller;
the input end of the pile-entering hydrogen flow control valve is connected with a hydrogen tank, the output end of the pile-entering hydrogen flow control valve is connected with a pile hydrogen inlet, and the pile hydrogen outlet is connected with a hydrogen discharge valve.
Preferably, the fuel cell controller, the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller realize control signal data transmission through a bus.
Preferably, the fuel cell controller detects the power supply state of the whole vehicle, and starts the pile-entering hydrogen pressure control when the power supply of the whole vehicle is interrupted.
The invention has the following beneficial effects:
after the adoption of the system for ensuring the hydrogen air pressure difference after the power failure of the whole vehicle by the DCDC integrated battery, the uninterrupted power supply system is integrated in the DCDC module, so that the hydrogen pressure in the galvanic pile can be ensured to be reduced to a normal pressure range when the power supply of the whole vehicle is suddenly interrupted, and the reliability and the stability of a fuel cell system are improved.
Drawings
Fig. 1 is a schematic diagram of a system for ensuring hydrogen-air pressure difference after power failure of a finished vehicle by using a DCDC integrated battery according to the present invention.
Fig. 2 is a schematic diagram of a system working flow of the DCDC integrated battery for ensuring the hydrogen-air pressure difference after the power failure of the whole vehicle.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a system for ensuring hydrogen-air pressure difference after power failure of a finished automobile by a DCDC integrated battery comprises a DCDC module, a battery, a fuel cell controller, a hydrogen discharge valve, an electric pile and a pile entering hydrogen flow controller;
the DCDC module supplies power to the input end and connects the whole vehicle power supply and the battery to form an uninterruptible power supply, when the whole vehicle is supplied with power normally, the DCDC module supplies power to the fuel cell controller while charging the battery, and when the whole vehicle is interrupted in power supply, the DCDC module supplies power to the fuel cell controller by using the electric energy of the battery;
the fuel cell controller controls and supplies power to the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller;
the input end of the pile-entering hydrogen flow control valve is connected with a hydrogen tank, the output end of the pile-entering hydrogen flow control valve is connected with a pile hydrogen inlet, and the pile hydrogen outlet is connected with a hydrogen discharge valve.
During specific implementation, the fuel cell controller, the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller realize control signal data transmission through a bus.
During specific implementation, the fuel cell controller detects the power supply state of the whole vehicle, and starts the pile-entering hydrogen pressure control when the power supply of the whole vehicle is interrupted.
The operation flow is as follows:
referring to fig. 2, when the fuel cell controller detects that the power supply of the whole vehicle is interrupted, the fuel cell controller immediately closes the reactor hydrogen flow controller and opens the hydrogen discharge valve, and then monitors the value of the reactor hydrogen pressure sensor in real time, and closes the hydrogen discharge valve until the value is lower than a target value, thereby completing the control of the hydrogen pressure in the stack.
According to the system for ensuring the hydrogen-air pressure difference after the power failure of the whole vehicle by the DCDC integrated battery, the uninterrupted power supply system is integrated in the DCDC module, so that the hydrogen pressure in the galvanic pile can be still reduced to a normal pressure range when the power supply of the whole vehicle is suddenly interrupted, and the reliability and the stability of a fuel cell system are improved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.

Claims (3)

1. The utility model provides a system for hydrogen air-to-air pressure difference after DCDC integrated battery guarantees whole car outage which characterized in that: the system comprises a DCDC module, a battery, a fuel cell controller, a hydrogen discharge valve, a galvanic pile and a pile-entering hydrogen flow controller;
the DCDC module supplies power to the input end and connects the whole vehicle power supply and the battery to form an uninterruptible power supply, when the whole vehicle is supplied with power normally, the DCDC module supplies power to the fuel cell controller while charging the battery, and when the whole vehicle is interrupted in power supply, the DCDC module supplies power to the fuel cell controller by using the electric energy of the battery;
the fuel cell controller controls and supplies power to the hydrogen discharge valve, the reactor hydrogen pressure sensor and the reactor hydrogen flow controller;
the input end of the pile-entering hydrogen flow control valve is connected with a hydrogen tank, the output end of the pile-entering hydrogen flow control valve is connected with a pile hydrogen inlet, and the pile hydrogen outlet is connected with a hydrogen discharge valve.
2. The system for ensuring hydrogen-air pressure difference after power failure of the whole vehicle by the DCDC integrated battery according to claim 1, characterized in that: and the fuel cell controller, the hydrogen discharge valve, the reactor-entering hydrogen pressure sensor and the reactor-entering hydrogen flow controller realize control signal data transmission through a bus.
3. The system for ensuring hydrogen-air pressure difference after power failure of the whole vehicle by the DCDC integrated battery according to claim 1, characterized in that: the fuel cell controller detects the power supply state of the whole vehicle, and starts the pile-entering hydrogen pressure control when the power supply of the whole vehicle is interrupted.
CN202210404590.9A 2022-04-18 2022-04-18 System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery Pending CN114590175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210404590.9A CN114590175A (en) 2022-04-18 2022-04-18 System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210404590.9A CN114590175A (en) 2022-04-18 2022-04-18 System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery

Publications (1)

Publication Number Publication Date
CN114590175A true CN114590175A (en) 2022-06-07

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ID=81821171

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210404590.9A Pending CN114590175A (en) 2022-04-18 2022-04-18 System for ensuring hydrogen-air pressure difference after power failure of whole vehicle by DCDC integrated battery

Country Status (1)

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CN (1) CN114590175A (en)

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