Classifications

• • 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
  • H01M8/02—Details
  • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
  • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
• • 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
  • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
  • H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
• • 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
  • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
  • H01M8/2465—Details of groupings of fuel cells
• • 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
  • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
  • H01M8/2465—Details of groupings of fuel cells
  • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
  • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
• • 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
• • 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
  • H01M8/04955—Shut-off or shut-down of fuel cells
• • 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
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/30—Hydrogen technology
  • Y02E60/50—Fuel cells
• • 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

Definitions

• the present invention relates to a fuel cell including a shut-off device that can shut off output from a fuel cell stack to an external device by a mechanical operation from outside the stack case.
• This fuel cell generally includes a fuel cell stack including a cell stack in which a required number of cells that generate electricity by an electrochemical reaction between a fuel gas and an acid gas are stacked, and the outside of the fuel cell stack is disposed outside. Covered with a stack case.
• This fuel cell is known to have a so-called service plug that functions as a current breaker that electrically disconnects the output cable and the fuel cell stack when performing maintenance and inspection of the fuel cell stack. (For example, refer to Japanese Laid-Open Patent Publication No. 2 00 3-6 7 6 6 6). Disclosure of the invention
• a fixing portion is provided on the inside of the stack case, and a service plug that can be attached and detached from the outside of the stack case is attached to the fixing portion so as to be exposed to the outside of the stack case.
• the output cable for supplying the output from the stack case to an external device such as a power control boot is connected to a fixed part provided inside the stack case.
• the output cable and service plug Had to be fixed to the inside and outside of the stack case of the fixing part, and the assembly man-hours increased.
• the output cable had to be connected to the inside of the stack case, which hindered good assembly.
• a fuel cell according to the present invention includes: a fuel cell stack; a stack case that houses the fuel cell stack; and an output of the fuel cell stack to an apparatus provided outside the stack case. And a disconnecting device capable of electrically disconnecting the output cable and the output terminal portion of the fuel cell stack, and capable of interrupting the interconnection by the connecting portion by mechanical operation from outside the stack case. A part of the shut-off device where at least the output cable is electrically connected to the connection portion is disposed outside the stack case.
• the output The cable may be connected to the main body portion side or may be connected to the operation portion side.
• the casing of the main body may be made of the same material as the stack case.
• the casing and stack case of the main unit are formed of a conductor such as aluminum, for example, in a configuration in which the output cable is connected to the main unit, the stack case is installed on the main unit.
• Body hess It is possible to ground through the tack case, and in the configuration where the output cable is connected to the operation unit side, this operation unit can be grounded to the body of the vehicle or the like through the main unit and the stack case. It is possible to improve safety.
• the assemblability can be improved.
• FIG. 1 is a schematic configuration diagram illustrating the configuration of a fuel cell.
• FIG. 2 is a perspective view of the fuel cell illustrating the shut-off device.
• FIG. 3 is a front view of the fuel cell illustrating the shut-off device.
• FIG. 4 is an exploded perspective view illustrating the structure of the shut-off device.
• FIG. 5 is a longitudinal sectional view illustrating the internal structure of the shut-off device.
• FIG. 6 is a cross-sectional view illustrating the internal structure of a blocking device having another structure.
• FIG. 1 A first embodiment of a fuel cell according to the present invention will be described with reference to FIG. 1 and FIG.
• FIG. 1 shows a fuel cell 10.
• This fuel cell 10 is an in-vehicle power generation system for fuel cell vehicles, power generation systems for all moving objects such as ships, airplanes, trains, and walking robots. It can be applied to stationary power generation systems used, but specifically for automobiles.
• the fuel cell 10 includes a fuel cell array including a cell stack in which a required number of cells that generate electricity by electrochemical reaction between a fuel gas and an oxidizing gas are stacked.
• the stack 11 has a stack case 12 made of, for example, aluminum and covers the outside of the fuel cell stack 11.
• the fuel cell 10 is supported by a frame 14 made of, for example, aluminum with respect to a body 13 of a moving vehicle made of an iron plate or the like.
• a shut-off device 21 is provided on the outer surface of the stack case 12 of the fuel cell 10, and an output cable 22 connected to the shut-off device 21 is provided outside the stack case 12. Connected to the specified power control unit 2 3 and connected.
• the power control unit 23 is necessary for the operation of the fuel cell 10 such as an impeller for supplying power to the drive motor of the automobile and a compressor motor or a motor for a hydrogen pump.
• An inverter that supplies electric power to various auxiliary devices, a DC-DC converter that supplies electric power to the motors from the electric storage means, and the like are provided.
• the output cable (power cable) 2 2 of the present embodiment is a shielded cable, and a conductor for transmitting the output from the fuel cell stack 11 and an outer conductor provided so as to cover the conductor. (For example, a metal film or a metal mesh).
• the outer conductor is provided so as to be electrically connected to the casing of the breaking device 21.
• the upper part of the shut-off device 21 is a plug attaching / detaching part (main part) 3 3, and the plug attaching / detaching part 3 3 is connected to the service plug (operating part) 3 2 Can be attached and detached by mechanical operation from outside the stack case 1 2.
• the casing of the shut-off device 21 is made of a rigid body formed by cutting out aluminum and forming a frame shape, and a force par 31 is screwed to the surface side thereof.
• the shut-off device 2 1 is attached to a mounting portion 4 1 provided on one side of the stack case 1 2 by screwing. By attaching the shut-off device 21 to 41, the first through hole 4 2 formed in the mounting portion 41 is covered from the outside by the shut-off device 21.
• an output bus bar 45 connected to the fuel cell stack 11 in the stack case 12 via a relay (not shown) is exposed in the first through hole 4 2 of the stack case 12.
• the shut-off device 21 is provided with a pair of input terminal 51, output terminal 52, and force S, and alternately arranged so as to protrude toward the plug attaching / detaching portion 33. Yes.
• a connection bus bar 53 is connected to each input terminal 51, and a connecting pass bar 54 is connected to the output terminal 52.
• the connection pass pad 53 is bent inward of the stack case 12 and further extends downward.
• the input terminal 51 and the connection bus bar 53 constitute an example of the output terminal portion of the fuel cell stack according to the present invention.
• the shut-off device '21 has an access from the outside to the inside of the stack case 12 by communicating with the first through hole 4 2 formed in the mounting portion 41 of the stack case 12 on the lower side.
• a second through hole 55 that constitutes a maintenance inspection hole (so-called service Honore) is formed, and the second through hole 55 has an end portion of the connection pass pad 53 in plan view. Is arranged.
• a cable connecting part (main body part) 61 is formed on one side of the breaking device 21.
• a pair of terminals 6 2 are arranged in the cable connecting portion 61, and a connecting pass pad 54 is connected to the terminals 62 by bolts 5 7 and nuts 5 8.
• An output cable 22 connected to the power control unit 23 is fixed to the cable connection 61, and the conductor of the output cable 22 is connected to the terminal 62.
• the terminal 6 2 and the connecting bus bar 5 4 An example of a portion where the output cable in the present invention is electrically connected to the connecting portion is configured.
• the service plug 3 2 attached to the plug attaching / detaching part 3 3 of the shut-off device 2 1 has four connection terminals 7 1.
• the service plug 3 2 3 Input terminal 5 1 and output terminal 5 2 on the side of breaker 2 1 are fitted to connection terminal 7 1 of 2
• connection terminal 7 1 of 2 As a result, the input terminal 51 and the output terminal 52 adjacent to each other are brought into conduction through the service plug 3 2.
• connection terminals 71 constitute an example of a connection portion that electrically interconnects the output cable and the output terminal portion in the interrupting device according to the present invention.
• the plug attaching / detaching portion 33 and the cable connecting portion 61 constitute an example of a main body portion fixed to the outer surface of the stack case in the interrupting device according to the present invention.
• the interrupting device of the present invention includes a first terminal (in this embodiment, an output terminal 5 2) electrically connected to a load (in this embodiment, a power control unit 23), and this first terminal.
• a second terminal in this embodiment, input terminal 5 1) electrically connected to the output terminal of the fuel cell stack 11 (in this embodiment, connection pass pad 5 3),
• a conductive body in this embodiment, the connection terminal 7 1) that conducts between the first and second terminals is included. This conductive body is displaced between a position at which the first and second terminals are conducted and a position at which the first and second terminals are not conducted according to a user's mechanical operation.
• the shut-off device has a housing including a pedestal that supports the first and second terminals, a force par that covers the second terminal, and the like.
• the casing is a conductor and is electrically connected to the stack case 12.
• the conducting body is separated from the interrupting device main body (in this embodiment, the plug attaching / detaching portion 33 and the cable connecting portion 61).
• a so-called play force configuration is also included in which the conductor is integrated with the breaker body so as to be displaceable between the first and second terminals.
• connection bus pad 5 3 When the shut-off device 2 1 configured as described above is attached to one side of the stack case 1 2 so as to cover the first through hole 4 2, the end of the connection bus pad 5 3 is attached to the fuel cell stack 1 1. Overlaid on connected output passpa 4 5. In this state, the connection pass pad 53 and the output pass pad 45 can be fastened by the bolt 5 9 from the second through hole 55 and can be brought into conduction.
• connection pass pad 53 and the output bus bar 45 are fastened by the second through hole 55, a closing lid 5 6 is applied so as to cover the second through hole 55, and this closing lid 5 6.
• a closing lid 5 6 is applied so as to cover the second through hole 55, and this closing lid 5 6.
• the electric power (output) generated in the fuel cell stack 1 1 is output from the output bus bar 4 5 to the connection bus bar 5 3, the service plug 3 2, It is sent to the power control unit 2 3 provided outside the stack case 1 2 through the output cable 2 2.
• the output cable 2 2 is the part that is electrically connected to the connection terminal 7 1 in the service plug 3 2, that is, the terminal 6 2 to which the output cable 2 2 is connected and the connecting bus bar 5 4 are outside the stack case 1 2 It is placed.
• the fuel cell 10 when the fuel cell 10 is assembled, it is possible to eliminate the connection / fixing work of the output cable 2 2 in the stack case 12 and to improve the assemblability.
• the terminal 6 2 for electrically connecting the service plug 3 2 and the output cable 2 2 and the connecting bus bar 5 4 are accommodated in the shut-off device 2 2. As a result, exposure to the outside of the connecting portion is eliminated, and safety is improved.
• the shut-off device 2 1 is made of aluminum, which is the same material as the stack case 1 2, the shut-off device 2 1 is connected to the body 1 of the vehicle on which the stack case 1 2 is installed 1 3 to the stack case 1 2 It can be grounded via the ground, and safety can be improved.
• the output cable 22 of the present embodiment is a shielded cable having a conductive wire that transmits the output from the fuel cell stack 11 and an outer conductor provided so as to cover the conductive wire.
• this outer conductor is the cable connection 6 1 or service plug 3 It is provided so as to be electrically connected to the two cases.
• the outer conductor of the output cable 2 2 is also connected to the vehicle body etc. via the stack case 1 2 and the cable connection 6 1 of the shut-off device 2 1 or the service plug 3 2 and grounded.
• the grounding for suppressing the influence of noise on the output cable 22 can be realized with a simple configuration.
• FIG. 6 shows another form of the shut-off device 21 A.
• the connecting pass bar 54 is arranged along the extending direction of the connecting bus bar 53. ing.
• the width dimension of the blocking device 21 A is larger than that of the blocking device 21 in which the connecting bus bar 54 is arranged in a direction orthogonal to the extending direction of the connecting bus bar 53. Can be small.
• the output cable 2 2 is connected to the cable connecting portion 61 attached to the stack case 12 together with the plug attaching / detaching portion 33 .
• the output cable 2 2 may be connected to the service plug 3 2 side. In such a configuration, the output cable 2 2 is more effectively assembled. Improves the ease of mounting.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Fuel Cell (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Connection Of Batteries Or Terminals (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38327435

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (4)

Citations (6)

• 2006
  • 2006-01-31 JP JP2006023564A patent/JP4993255B2/ja not_active Expired - Fee Related
• 2007
  • 2007-01-24 CN CN2007800039353A patent/CN101375456B/zh not_active Expired - Fee Related
  • 2007-01-24 US US12/087,260 patent/US8067106B2/en not_active Expired - Fee Related
  • 2007-01-24 WO PCT/JP2007/051530 patent/WO2007088864A1/ja not_active Ceased
  • 2007-01-24 DE DE112007000191T patent/DE112007000191T5/de not_active Withdrawn

Patent Citations (6)

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