CN112838257A - Fuel cell system and vehicle - Google Patents

Fuel cell system and vehicle Download PDF

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Publication number
CN112838257A
CN112838257A CN201911164176.XA CN201911164176A CN112838257A CN 112838257 A CN112838257 A CN 112838257A CN 201911164176 A CN201911164176 A CN 201911164176A CN 112838257 A CN112838257 A CN 112838257A
Authority
CN
China
Prior art keywords
plug
distribution box
fuel cell
cell system
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911164176.XA
Other languages
Chinese (zh)
Inventor
段羽
赵朕宇
牛振华
崔天宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weishi Energy Technology Co Ltd
Original Assignee
Weishi Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weishi Energy Technology Co Ltd filed Critical Weishi Energy Technology Co Ltd
Priority to CN201911164176.XA priority Critical patent/CN112838257A/en
Publication of CN112838257A publication Critical patent/CN112838257A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/621—Bolt, set screw or screw clamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (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)

Abstract

The invention discloses a fuel cell system and a vehicle. The fuel cell system includes: the electric pile and the distribution box are provided with a plug connector, the other one of the electric pile and the distribution box is provided with a plug-in part, a first bus bar is arranged in a slot of the plug-in connector, the plug-in part comprises a second bus bar, and the second bus bar is suitable for being inserted into the slot and is electrically connected with the first bus bar. According to the fuel cell system, the weight and the occupied space of the electric connection structure between the galvanic pile and the distribution box are greatly reduced, the requirements of a vehicle on compact and light structure are favorably met, the weight and the cost of a vehicle body are reduced, the electric connection structure can bear jolt and vibration of the whole vehicle, the safety performance is improved, and the pressure loss is reduced.

Description

Fuel cell system and vehicle
Technical Field
The invention relates to the field of automobiles, in particular to a fuel cell system and a vehicle.
Background
In a fuel cell system, hydrogen from the anode of the stack reacts with oxygen from the cathode to produce electricity. The distribution box functions to distribute the electrical energy generated by the stack to the load.
In the related art, the stack and the distribution box are connected by a wire harness capable of conducting high voltage and high current, but since the current is high, the required wire harness has a large cross-sectional area, resulting in a large bending radius, a long stroke, high voltage loss and heavy weight. Therefore, the high-voltage wire harness occupies a large amount of space, increases the weight and cost of the vehicle body, and cannot meet the requirements of compact structure and lightness of the whole vehicle.
Disclosure of Invention
In view of the above, the present invention is directed to a fuel cell system to reduce the space and weight occupied by an electrical connection structure between a stack and a distribution box.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a fuel cell system comprising: the electric pile and the distribution box are provided with a plug connector, the other one of the electric pile and the distribution box is provided with a plug-in part, a first bus bar is arranged in a slot of the plug-in connector, the plug-in part comprises a second bus bar, and the second bus bar is suitable for being inserted into the slot and is electrically connected with the first bus bar.
According to some embodiments of the invention, the other of the stack and the distribution box is sealingly connected to a slot edge of the slot.
According to some embodiments of the invention, the slot edge of the slot is provided with a flanging, and the other of the electric pile and the distribution box is connected with the flanging through a fastener.
Further, the other one of the galvanic pile and the distribution box and the outward flange are provided with threaded holes, and the fastening piece is in threaded fit with the threaded holes.
According to some embodiments of the invention, the fuel cell system further comprises: a seal for sealing a gap between the other of the distribution box and the stack and the flange.
Further, at least one of the other of the distribution box and the stack and the out-turned edges is provided with a sealing groove for accommodating the sealing member.
According to some embodiments of the invention, the plug is integrally formed with a housing of the distribution box or the plug is integrally formed with a housing of the stack.
According to some embodiments of the invention, the other of the stack and the distribution box is in surface contact with the flanging.
According to some embodiments of the invention, the plug connector comprises a positive plug connector and a negative plug connector, the plug part comprises a positive plug part for electrically connecting with the first busbar in the positive plug connector and a negative plug part for electrically connecting with the first busbar in the negative plug connector, and both the notch edge of the positive plug connector and the notch edge of the negative plug connector are hermetically connected with the other of the stack and the distribution box.
Compared with the prior art, the fuel cell system has the following advantages:
grafting portion and bayonet joint are pegged graft and are linked to each other to realize the electricity of first busbar and second busbar and be connected, and then realize the electricity of galvanic pile and block terminal and be connected, greatly reduced between galvanic pile and the block terminal electric connection structure's weight and occupation space, be favorable to satisfying the vehicle to the requirement that the structure is compact and light and handy, reduced automobile body weight and cost, and electric connection structure can bear jolting and vibration of whole car, improved the security performance, reduced the pressure loss.
Another object of the invention is to propose a vehicle including the fuel cell system of the above embodiment.
Compared with the prior art, the vehicle has the same advantages as the fuel cell system, and the detailed description is omitted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a fuel cell system of an embodiment of the invention;
fig. 2 is a schematic diagram of a distribution box of a fuel cell system of an embodiment of the invention;
fig. 3 is a schematic view of an angle of a stack of a fuel cell system according to an embodiment of the present invention;
fig. 4 is a schematic view of another angle of the stack of the fuel cell system according to the embodiment of the present invention.
Description of reference numerals:
a fuel cell system 100;
a stack 10; a plug-in part 11; a second bus bar 111; a positive electrode insertion part 112; a negative electrode insertion part 113; a housing 12 of the stack 10; a seal groove 121;
a distribution box 20; a plug-in connector 21; a slot 211; a flange 212; a positive electrode plug 213; a negative electrode connector 214; a first bus bar 22; a housing 23 of the distribution box 20;
a threaded bore 30.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 4 in conjunction with examples.
Referring to fig. 1, a fuel cell system 100 according to an embodiment of the present invention includes: a stack 10 and a distribution box 20.
Specifically, as shown in fig. 1 to 4, the power distribution box 20 has a plug 21, the stack 10 has a plug 11, a first bus bar 22 is provided in a slot 211 of the plug 21, the plug 11 includes a second bus bar 111, and the second bus bar 111 can be inserted into the slot 211 and electrically connected to the first bus bar 22. Thereby, the electrical connection of the stack 10 and the distribution box 20 is achieved, so that electricity generated by the operation of the stack 10 can be distributed to a load through the distribution box 20.
Of course, the positions of the plug 21 and the plug part 11 may be interchanged, and specifically, the stack 10 has the plug 21, the distribution box 20 has the plug part 11, and the plug part 11 may be plugged with the plug 21 to electrically connect the first bus bar 22 and the second bus bar 111. In other words, one of the stack 10 and the distribution box 20 has the plug 21, and the other has the plug 11, the first bus bar 22 is disposed in the slot 211 of the plug 21, and the plug 11 includes the second bus bar 111, and the second bus bar 111 is adapted to be inserted into the slot 211 and electrically connected to the first bus bar 22.
Compared with the prior art that the galvanic pile and the distribution box are electrically connected through the high-voltage wire harness, the invention cancels the high-voltage wire harness structure, adopts the bus bar connection electric connection mode, greatly reduces the occupied space and the weight of the electric connection structure, successfully solves the technical problem of large occupied space of the traditional wire harness, can meet the requirements of a vehicle on compact structure and lightness, reduces the production cost, and reduces the vehicle sound weight and the vehicle use cost.
In addition, compared with the traditional wiring harness connection mode, the mode that the bus bars are connected in an inserting mode is firmer and more reliable, the bumping and the vibration of the whole vehicle can be borne, and the vibration resistance of the fuel cell system 100 is greatly improved. The electric connection structure of the invention also greatly shortens the over-current stroke, reduces the voltage loss and improves the electric transmission efficiency.
And the junction of first busbar 22 and second busbar 111 is located slot 211, and bayonet joint 21 can shelter from and protect electric connection structure, and on the one hand protection electric connection structure is not damaged by the collision, prevents that impurity such as external liquid, dust from polluting electric connection structure and influencing the reliability of electricity connection, and on the other hand can also shelter from electrified part, prevents that personnel from taking place the electric shock accident, improves the security performance.
The present invention is not particularly limited to the specific structure of the insertion groove 211. In some embodiments, as shown in fig. 2, the space in the slot 211 is a rectangular parallelepiped, the first bus bar 22 and the second bus bar 111 are both copper bars, and the side slot wall of the slot 211 may limit the first bus bar 22 and the second bus bar 111, so that the first bus bar 22 and the second bus bar 111 can be in close contact, so as to improve the electrical transmission efficiency. In other embodiments, the cross section of the insertion slot 211 may be square, polygonal, circular, or elliptical, and the like, which only needs to meet the requirement that the plugging portion 11 is plugged into the plug 21 to tightly contact the first bus bar 22 and the second bus bar 111.
According to the fuel cell system 100 of the embodiment of the invention, the insertion part 11 and the insertion connector 21 are inserted and connected to realize the electrical connection of the first bus bar 22 and the second bus bar 111, so as to realize the electrical connection of the electric pile 10 and the distribution box 20, thereby greatly reducing the weight and the occupied space of the electrical connection structure between the electric pile 10 and the distribution box 20, being beneficial to meeting the requirements of a vehicle on compact and light structure, reducing the weight and the cost of a vehicle body, bearing the jolt and the vibration of the whole vehicle, improving the safety performance and reducing the pressure loss.
According to some embodiments of the present invention, as shown in fig. 2, the plug 21 includes a positive plug 213 and a negative plug 214, the slot 211 of the positive plug 213 has a first bus bar 22 disposed therein, and the slot 211 of the negative plug 214 also has the first bus bar 22 disposed therein. As shown in fig. 3 and 4, the socket 11 includes a positive socket 112 and a negative socket 113, and the positive socket 112 and the negative socket 113 include second bus bars 111, respectively. The positive plug 112 is electrically connected to the first bus bar 22 in the positive plug 213 through the second bus bar 111, and the negative plug 113 is electrically connected to the first bus bar 22 in the negative plug 214 through the second bus bar 111.
According to some embodiments of the present invention, the other of the electric pile 10 and the distribution box 20 is hermetically connected to the slot edge of the slot 211, so as to effectively prevent external impurities from entering the slot 211 through the slot to affect the electrical connection, and meet the waterproof and dustproof requirements.
In some embodiments of the present invention, as shown in fig. 1 and 2, the notch edge of the insertion slot 211 is provided with a flanging 212, and the other of the stack 10 and the distribution box 20 can be connected to the flanging 212 by a fastener, so that the connection between the stack 10 and the distribution box 20 is achieved, and the connection is reliable, which is beneficial to further improving the stability of the electrical connection between the first bus bar 22 and the second bus bar 111, and improving the electrical transmission efficiency.
For example, in the example shown in fig. 2-4, the flange 212 of each plug 21 is connected to the housing 12 of the stack 10 by four fasteners, so that the stack 10 and the distribution box 20 are connected by eight fasteners, satisfying the required mechanical strength. Of course, the number of fasteners connecting the stack 10 and the distribution box 20 includes, but is not limited to, eight as shown in fig. 2-4, and only needs to satisfy the requirement that the stack 10 and the distribution box 20 are reliably connected.
In some embodiments, the other of the stack 10 and the distribution box 20 and the flange 212 are provided with the threaded hole 30, the fastening member is in threaded fit with the threaded hole 30, the connection mode is simple, the disassembly and assembly are easy, the required operation space is small, and the protruding height of the plug 21 can be designed to be smaller, so as to further improve the structural compactness of the fuel cell system 100.
According to some embodiments of the present invention, the fuel cell system 100 further includes a sealing member for sealing a gap between the other of the distribution box 20 and the stack 10 and the flange 212 to improve the sealing performance of the connection, prevent external impurities from entering the slot 211 through the gap to affect the electrical connection, and meet the requirements of dustproof and waterproof grade.
In some embodiments, as shown in fig. 3 and 4, the plug 21 is disposed on the distribution box 20, at least one of the stack 10 and the flange 212 is provided with a sealing groove 121, and the sealing groove 121 is used for accommodating a sealing element to limit the sealing element and prevent the sealing element from being dislocated to affect the sealing effect.
In some embodiments, the plug 21 may be integrally formed with the housing 23 of the distribution box 20, so that the plug 21 may be integrally formed with the housing 23 of the distribution box 20 during the manufacturing process, thereby simplifying the manufacturing process, improving the manufacturing efficiency, and reducing the connection gap.
In other embodiments, the plug 21 is disposed on the stack 10, and at least one of the distribution box 20 and the flange 212 is provided with a sealing groove 121, and the sealing groove 121 is used for accommodating a sealing element to limit the sealing element and prevent the sealing element from being dislocated to affect the sealing effect.
In other embodiments, the plug 21 may be integrally formed with the housing 12 of the stack 10, so that the plug 21 may be integrally formed with the housing 12 of the stack 10 during the production process, thereby simplifying the manufacturing process, improving the production efficiency, and reducing the connection gap.
According to some embodiments of the present invention, the other of the stack 10 and the distribution box 20 is in surface-to-surface contact with the flange 212. For example, in the embodiment where the plug 21 is disposed on the distribution box 20, the side surface of the housing 12 of the stack 10 is a plane, the surface of the flange 212 facing the stack 10 is a plane, and the two planes are opposite to each other, so that on one hand, the stability of connection between the stack 10 and the distribution box 20 can be improved, vibration is not easy to occur, and on the other hand, sealing is facilitated.
It should be noted that, in the embodiment where the plug 21 includes the positive plug 213 and the negative plug 214, and the plug 11 includes the positive plug 112 and the negative plug 113, the other of the stack 10 and the distribution box 20 is hermetically connected to the edge of the notch of the positive plug 213, the other of the stack 10 and the distribution box 20 is hermetically connected to the edge of the notch of the negative plug 214, and the positive plug 213 and the negative plug 214 are respectively hermetically connected, which is beneficial to improving the sealing effect, and do not interfere with each other, and short-circuit accidents are not easy to occur.
A vehicle according to an embodiment of another aspect of the present invention includes the fuel cell system 100 of the above embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A fuel cell system (100), comprising:
the power distribution box comprises a power pile (10) and a power distribution box (20), wherein one of the power pile (10) and the power distribution box (20) is provided with a plug-in connector (21), the other one of the power pile (10) and the power distribution box (20) is provided with a plug-in part (11), a first bus bar (22) is arranged in a slot (211) of the plug-in connector (21), the plug-in part (11) comprises a second bus bar (111), and the second bus bar (111) is suitable for being inserted into the slot (211) and is electrically connected with the first bus bar (22).
2. The fuel cell system (100) of claim 1, wherein the other of the stack (10) and the distribution box (20) is sealingly connected to a slot edge of the receptacle (211).
3. The fuel cell system (100) according to claim 1, wherein a notch edge of the insertion groove (211) is provided with a flange (212), and the other of the stack (10) and the distribution box (20) is connected to the flange (212) by a fastener.
4. The fuel cell system (100) of claim 3, wherein the other of the stack (10) and the distribution box (20) and the flange (212) are each provided with a threaded hole (30), and the fastener is threadedly engaged with the threaded hole (30).
5. The fuel cell system (100) according to claim 3, further comprising:
a seal for sealing a gap between the other of the distribution box (20) and the stack (10) and the flanging (212).
6. The fuel cell system (100) of claim 5, wherein at least one of the other of the distribution box (20) and the stack (10) and the flange (212) is provided with a seal groove (121) for receiving the seal.
7. The fuel cell system (100) according to claim 5, wherein the plug (21) is integrally formed to a housing (23) of the distribution box (20), or wherein the plug (21) is integrally formed to a housing (12) of the stack (10).
8. The fuel cell system (100) of claim 3, wherein the other of the stack (10) and the distribution box (20) is in surface-to-surface contact with the flange (212).
9. A fuel cell system (100) according to any one of claims 2 to 8, wherein the plug (21) comprises a positive plug (213) and a negative plug (214), the plug (11) comprising a positive plug (112) for electrical connection with the first busbar (22) within the positive plug (213) and a negative plug (113) for electrical connection with the first busbar (22) within the negative plug (214),
the notch edge of the positive plug connector (213) and the notch edge of the negative plug connector (214) are hermetically connected with the other one of the electric pile (10) and the distribution box (20).
10. A vehicle, characterized by comprising a fuel cell system (100) according to any one of claims 1-9.
CN201911164176.XA 2019-11-25 2019-11-25 Fuel cell system and vehicle Pending CN112838257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911164176.XA CN112838257A (en) 2019-11-25 2019-11-25 Fuel cell system and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911164176.XA CN112838257A (en) 2019-11-25 2019-11-25 Fuel cell system and vehicle

Publications (1)

Publication Number Publication Date
CN112838257A true CN112838257A (en) 2021-05-25

Family

ID=75922066

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911164176.XA Pending CN112838257A (en) 2019-11-25 2019-11-25 Fuel cell system and vehicle

Country Status (1)

Country Link
CN (1) CN112838257A (en)

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