CN111082120A - Composite end plate structure of fuel cell stack - Google Patents
Composite end plate structure of fuel cell stack Download PDFInfo
- Publication number
- CN111082120A CN111082120A CN202010011143.8A CN202010011143A CN111082120A CN 111082120 A CN111082120 A CN 111082120A CN 202010011143 A CN202010011143 A CN 202010011143A CN 111082120 A CN111082120 A CN 111082120A
- Authority
- CN
- China
- Prior art keywords
- buckle
- end plate
- groove
- rotary
- hole
- 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
Links
Images
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
- H01M8/24—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
-
- 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
Landscapes
- 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)
Abstract
The invention discloses a fuel cell stack composite end plate structure which comprises an end plate body, wherein one surface of the end plate body is an insulating layer, a sunken positioning groove is formed in one surface of the end plate body, a current collecting plate is assembled in the positioning groove, the current collecting plate is fixed in the positioning groove through a fixing piece, and the current collecting plate is accurately positioned through the positioning groove structure by the composite structure of the current collecting plate and the end plate. The integrated structure is used for realizing the integration of the end plate, the insulating plate and the current collecting plate, improving the assembly precision and reducing the assembly difficulty. The positioning structure and the screw structure on the plastic-coated material of the end plate are used for positioning and locking the current collecting plate, so that the current collecting plate and the end plate are accurately and reliably connected, the stress balance of the current collecting plate is realized through the gasket, and the integration of the end plate, the insulating plate and the current collecting plate is realized.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell stack composite end plate structure, and particularly relates to a mechanical connection structure of the fuel cell stack composite end plate structure.
Background
As shown in fig. 8, it is necessary to maintain insulation between the end plates and the current collecting plates after the fuel cell stack is assembled. The traditional approach is to place an insulating plate between the end plate and the current collector plate or to wrap an insulating material around the end plate. During assembly, the end plate and the flow collecting plate are independently assembled. The assembly mode has high requirements on assembly operation, and the phenomenon of dislocation between the collector plate and the end plate is easy to occur, so that the danger of conduction between the end plate and the collector plate is caused. In addition, in order to ensure the close contact between the current collecting plate and the metal bipolar plate, the traditional structure has higher requirements on the surface flatness of the current collecting plate, the insulating plate and the end plate.
Disclosure of Invention
The invention aims to provide a composite end plate structure of a fuel cell stack, which is used for improving the assembly efficiency and precision of a current collecting plate, reducing the assembly deviation of the current collecting plate and improving the efficiency and practicability of assembly connection. The technical scheme overcomes the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a fuel cell pile composite end plate structure, includes the end plate body, a surface of end plate body is the insulating layer, the sunken constant head tank of form is formed to a surface of end plate body, and the current collector assembly is in above-mentioned constant head tank, and the current collector passes through the mounting to be fixed in the constant head tank, and the current collector carries out the accurate positioning of current collector through the constant head tank structure with the composite construction of end plate. The integrated structure is used for realizing the integration of the end plate, the insulating plate and the current collecting plate, improving the assembly precision and reducing the assembly difficulty.
The invention discloses a composite end plate structure of a fuel cell stack, which uses a positioning structure and a screw structure on an end plate plastic-coated material to position and lock a current collecting plate, ensures the accurate and reliable connection between the current collecting plate and the end plate, realizes the stress balance of the current collecting plate through a gasket, and realizes the integration of the end plate, an insulating plate and the current collecting plate.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is an assembly view of the first embodiment of the present invention.
Fig. 3 is a top view of a first embodiment of the present invention.
Fig. 4 is a sectional view taken along line a-a in fig. 3.
Fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 7 is a cross-sectional view of a third embodiment of the present invention.
Fig. 8 is a schematic diagram of a prior art structure.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The invention discloses a composite end plate structure of a fuel cell stack, which is shown in figure 1 and is different from the prior art in that: including end plate body 1, a surface of end plate body 1 is insulating layer 2, a surface of end plate body 1 forms sunken form constant head tank 8, and current collecting plate 3 assembles in above-mentioned constant head tank 8, and current collecting plate 3 passes through the mounting to be fixed in constant head tank 8.
In specific implementation, the insulating layer 2 is a plastic-coated layer or an insulating plate 6.
In specific implementation, the plastic-coated layer covers the surface of the positioning groove 8, and the insulating plate 6 covers one surface of the end plate body 1.
In practical implementation, as shown in fig. 2 to 4, the first embodiment of the present invention includes an end plate body 1, one surface of the end plate body 1 is an insulating layer 2, one surface of the end plate body 1 is formed with a recessed positioning groove 8, a current collecting plate 3 is assembled in the positioning groove 8, and the current collecting plate 3 is fixed in the positioning groove 8 by a fixing member. The mounting is screw 4, constant head tank 8 punishment distribute have with screw 4 complex screw post 9, and constant head tank 8 department around the screw post 9 forms annular packing ring assembly chamber 21, imbeds a packing ring 5 in the packing ring assembly chamber 21, current collector plate 3 department is provided with hole 22 with screw 4 complex, and the inner edge of hole 22 forms annular spacing step 23. And locking and fixing the collector plate by using screws. The composite structure of the collector plate and the end plate can conveniently replace the collector plate or the end plate part by unscrewing the screw. The washers 5 are used for balancing the force of each locking position, so that the force of the collector plate is uniform. The screws are screwed on the screw columns to realize the locking of the collector plate, and the plurality of groups of screws and the screw columns are uniformly arranged to ensure the effective fixation of the collector plate. The washer is sleeved on the screw column, and plays a role in shock absorption and adjustment between the current collecting plate and the plastic coating structure, so that the current collecting plate is stressed uniformly, and the stable contact between the current collecting plate and the bipolar plate is ensured.
In practical implementation, as shown in fig. 5, the second embodiment of the present invention includes an end plate body 1, one surface of the end plate body 1 is an insulating layer 2, one surface of the end plate body 1 is formed with a recessed positioning groove 8, a current collecting plate 3 is assembled in the positioning groove 8, and the current collecting plate 3 is fixed in the positioning groove 8 by a fixing member. The fixing piece is a rotary buckle 10, rotary buckle columns 11 matched with the rotary buckle 10 are distributed in the positions of the positioning grooves 8, at least one hook-shaped buckle rotary groove 13 is formed in the outer wall of each rotary buckle column 11, rotary buckle pins 12 matched with the hook-shaped buckle rotary grooves 13 are arranged in the positions of the rotary buckles 10, annular gasket assembly cavities 21 are formed in the positions of the positioning grooves 8 around the rotary buckle columns 11, gaskets 5 are embedded into the gasket assembly cavities 21, holes 22 matched with the rotary buckles 10 are formed in the positions of the collector plates 3, and annular limiting steps 23 are formed in the inner edges of the holes 22. The hook-shaped buckle rotating groove 13 is composed of a longitudinal groove 24, a transverse groove 25 and a limiting groove 26, the longitudinal groove 24 vertically extends downwards from the upper end of the outer wall of the rotating buckle column 11, the transverse groove 25 is horizontally distributed on the outer wall of the rotating buckle column 11, one end of the transverse groove 25 is communicated with the lower end of the longitudinal groove 24, the other end of the transverse groove 25 is communicated with the lower end of the limiting groove 26, the limiting groove 26 extends upwards from the other end of the transverse groove 25, a protruding sliding block is arranged at the position of the rotating buckle foot 12, and the protruding sliding block slides and displaces in the hook-shaped buckle rotating groove 13. The rotary buckle foot 12 is approximately L-shaped, the lower end of the rotary buckle foot 12 is suspended, and the convex sliding blocks are distributed on the inner side of the lower end of the rotary buckle foot 12. The rotary buckle 10 is of an oblate structure, and a straight groove 33 is formed in the upper surface of the rotary buckle 10. The collecting plate is fixed by locking the rotary buckle 10. A hook-shaped buckle rotating groove 13 is designed on the rotating buckle column 11, a convex slider of a rotating buckle foot 12 on the rotating buckle 10 firstly moves downwards along the track of the hook-shaped buckle rotating groove 13 and then moves transversely, and when the convex slider moves to the tail end of the transverse groove 25, the convex slider is pushed into a limiting groove 26 under the action of compression reaction force of the gasket 5, so that the locking and fixing of the collecting plate are realized. When the rotary buckle 10 is detached, the rotary buckle 10 can be taken down by pressing the buckle and reversely rotating.
In practical implementation, as shown in fig. 6 to 7, the third embodiment of the present invention includes an end plate body 1, one surface of the end plate body 1 is an insulating layer 2, one surface of the end plate body 1 is formed with a recessed positioning groove 8, a current collecting plate 3 is assembled in the positioning groove 8, and the current collecting plate 3 is fixed in the positioning groove 8 by a fixing member. The fixing piece is a limiting buckle 14, the positioning groove 8 is distributed with limiting buckle columns 27 matched with the limiting buckle 14, the limiting buckle columns 27 are distributed with four buckle notches 16, the four buckle notches 16 are distributed at equal intervals, adjacent buckle notches 16 are distributed at an included angle of forty-five degrees, the buckle notches 16 extend downwards from the top edge of the limiting buckle columns 27, the center of the limiting buckle column 27 is provided with a circular through hole 28 along the axis direction, the buckle notches 16 inwards form a clamping hole 29 communicated with the circular through hole 28, the center of the limiting buckle 14 is provided with a circular hole 30, the edge of the circular hole 30 is distributed with four straight buckles 31, the four straight buckles 31 are matched with the four buckle notches 16, the upper ends of the straight buckles 31 and the edge of the circular hole 30 are of an integral structure, the lower ends of the straight buckles 31 are in a suspended state, and the lower ends of the straight buckles 31 are provided with inward-protruding clamping blocks 32, the clamping block 32 is clamped in the clamping hole 29, the straight clamping buckle 31 is matched with the clamping buckle notch 16 in shape, an annular gasket assembly cavity 21 is formed at the position of the positioning groove 8 around the limiting buckle column 27, a gasket 5 is embedded in the gasket assembly cavity 21, a hole 22 matched with the limiting buckle 14 is formed at the position of the current collecting plate 3, and an annular limiting step 23 is formed at the inner edge of the hole 22. As shown in fig. 7, the retaining clip 14 is removable by a tool 34. The collector plate is fixed in a straight buckle locking mode. The limiting snap column 27 is designed as a hollow structure and is designed with snap notches 16 on the periphery. The straight buckle 31 is directly pressed on the limiting buckle column 27, and then the straight buckle 31 is clamped in the buckle notch 16, so that the locking and fixing of the current collecting plate are realized. When the special dismounting tool 34 is used for dismounting, the special dismounting tool 34 is inserted into the circular through hole 28, the spring plate 34 is extruded by the inner wall of the limiting clamping column 27 and can retract firstly, when the spring plate moves to the position of the clamping hole 29, the spring plate is popped out, the clamping block 32 of the straight clamping buckle 31 is pushed out of the clamping hole 29, and the dismounting of the limiting clamping buckle 14 is realized.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific details set forth herein. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A fuel cell stack composite end plate structure characterized in that: including end plate body (1), a surface of end plate body (1) is insulating layer (2), a surface of end plate body (1) forms sunken form constant head tank (8), and current collecting plate (3) assemble in above-mentioned constant head tank (8), and current collecting plate (3) are fixed in constant head tank (8) through the mounting.
2. A fuel cell stack composite end plate structure according to claim 1, wherein: the insulating layer (2) is a plastic-coated layer or an insulating plate (6).
3. A fuel cell stack composite end plate structure according to claim 2, wherein: the plastic-coated layer covers the surface of the positioning groove (8), and the insulating plate (6) covers one surface of the end plate body (1).
4. A fuel cell stack composite end plate structure according to claim 1, wherein: the mounting is screw (4), constant head tank (8) punishment distribute have with screw (4) complex screw post (9), and constant head tank (8) department around screw post (9) forms annular packing ring assembly chamber (21), an embedding packing ring (5) in packing ring assembly chamber (21), current collector plate (3) department be provided with screw (4) complex hole (22), the inner edge of hole (22) forms annular spacing step (23).
5. A fuel cell stack composite end plate structure according to claim 1, wherein: the fixing piece is a rotary buckle (10), the locating groove (8) is distributed with a rotary buckle column (11) matched with the rotary buckle (10), the outer wall of the rotary buckle column (11) is at least provided with a hook-shaped buckle rotary groove (13), the rotary buckle (10) is provided with a rotary buckle foot (12) matched with the hook-shaped buckle rotary groove (13), the locating groove (8) around the rotary buckle column (11) is provided with an annular gasket assembly cavity (21), a gasket (5) is embedded into the gasket assembly cavity (21), the current collecting plate (3) is provided with a hole (22) matched with the rotary buckle (10), and the inner edge of the hole (22) forms an annular limiting step (23).
6. A fuel cell stack composite end plate structure according to claim 1, wherein: hook-shaped buckle swivelling chute (13) comprises longitudinal groove (24), transverse groove (25), spacing groove (26), longitudinal groove (24) are perpendicular downwardly extending from the outer wall upper end of rotatory buckle post (11), transverse groove (25) are horizontal distribution in rotatory buckle post (11) outer wall department, the one end and the lower extreme intercommunication in longitudinal groove (24) of transverse groove (25), the other end and the lower extreme intercommunication in spacing groove (26) of transverse groove (25), spacing groove (26) are upwards extending from the other end in transverse groove (25), rotatory buckle foot (12) department becomes protruding form slider, protruding form slider slides displacement in hook-shaped buckle swivelling chute (13).
7. A fuel cell stack composite end plate structure according to claim 6, wherein: the rotary buckle foot (12) is approximately L-shaped, the lower end of the rotary buckle foot (12) is suspended, and the convex sliding blocks are distributed on the inner side of the lower end of the rotary buckle foot (12).
8. A fuel cell stack composite end plate structure according to claim 5, wherein: the rotary buckle (10) is of an oblate structure, and the upper surface of the rotary buckle (10) is provided with a straight groove (33).
9. A fuel cell stack composite end plate structure according to claim 1, wherein: the fixing piece is a limiting buckle (14), the positioning groove (8) is distributed with limiting buckle columns (27) matched with the limiting buckle (14), the limiting buckle columns (27) are distributed with four buckle notches (16), the four buckle notches (16) are distributed at equal intervals, adjacent buckle notches (16) are distributed at an included angle of forty-five degrees, the buckle notches (16) extend downwards from the top edge of the limiting buckle column (27), a circular through hole (28) is formed in the center of the limiting buckle column (27) along the axis direction, a buckle hole (29) communicated with the circular through hole (28) is formed inwards in each buckle notch (16), a circular hole (30) is formed in the center of each limiting buckle (14), four straight buckles (31) are distributed on the edge of the circular hole (30), the four straight buckles (31) are matched with the four buckle notches (16), and the upper ends of the straight buckles (31) and the edge of the circular hole (30) are of an integral structure, the lower extreme of straight buckle (31) is unsettled form, and the lower extreme department of straight buckle (31) forms inside bellied fixture block (32), fixture block (32) card is established in above-mentioned card hole (29), and the shape of straight buckle (31) cooperatees with above-mentioned buckle notch (16), and spacing buckle post (27) constant head tank (8) on every side department forms annular packing ring assembly chamber (21), imbeds a packing ring (5) in packing ring assembly chamber (21), collector plate (3) department is provided with hole (22) with spacing buckle (14) complex, and the inner edge of hole (22) forms annular spacing step (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011143.8A CN111082120A (en) | 2020-01-06 | 2020-01-06 | Composite end plate structure of fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011143.8A CN111082120A (en) | 2020-01-06 | 2020-01-06 | Composite end plate structure of fuel cell stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111082120A true CN111082120A (en) | 2020-04-28 |
Family
ID=70322259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010011143.8A Pending CN111082120A (en) | 2020-01-06 | 2020-01-06 | Composite end plate structure of fuel cell stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111082120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659183A (en) * | 2020-04-29 | 2021-11-16 | 未势能源科技有限公司 | Fuel cell stack assembly |
| CN113793967A (en) * | 2021-11-17 | 2021-12-14 | 国家电投集团氢能科技发展有限公司 | Hydrogen fuel cell stack, hydrogen fuel cell, and method for manufacturing hydrogen fuel cell |
-
2020
- 2020-01-06 CN CN202010011143.8A patent/CN111082120A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659183A (en) * | 2020-04-29 | 2021-11-16 | 未势能源科技有限公司 | Fuel cell stack assembly |
| CN113659183B (en) * | 2020-04-29 | 2023-01-13 | 未势能源科技有限公司 | Fuel cell stack assembly |
| CN113793967A (en) * | 2021-11-17 | 2021-12-14 | 国家电投集团氢能科技发展有限公司 | Hydrogen fuel cell stack, hydrogen fuel cell, and method for manufacturing hydrogen fuel cell |
| CN113793967B (en) * | 2021-11-17 | 2022-02-08 | 国家电投集团氢能科技发展有限公司 | Hydrogen fuel cell stack, hydrogen fuel cell, and method for manufacturing hydrogen fuel cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111082120A (en) | Composite end plate structure of fuel cell stack | |
| CN211455846U (en) | Composite end plate structure of fuel cell stack | |
| CN212434678U (en) | Fuel cell | |
| CN110289433B (en) | Fuel cell clamp convenient to quickly disassemble and assemble | |
| CN212094913U (en) | 18650 dedicated electrode slice laser welding auxiliary fixture frock of lithium electricity module | |
| CN108818368B (en) | Assembling clamp and assembling method for slot type partition plate | |
| CN215999547U (en) | Multi-process integration numerical control machine tool multi-shaft directional machining clamp | |
| CN211208862U (en) | Connector fixedly-sealing clamping tool | |
| CN217458582U (en) | Tower machine balancing weight components of a whole that can function independently structure of assembling | |
| CN206685448U (en) | A kind of easy-to-dismount automobile batteries module mounting bracket | |
| CN209786072U (en) | Metal sodium electrode wafer manufacturing device | |
| CN216098850U (en) | Silica gel raw material placing jig | |
| CN214793563U (en) | Soft-packaged electrical core bulging force testing tool | |
| CN220312470U (en) | Tool for machining equidistant small trapezoid ring grooves on end surfaces of parts | |
| CN207074684U (en) | Localization tool | |
| CN206305766U (en) | A kind of water pump Product Assembly tool | |
| CN219195187U (en) | Wafer electroplating jig | |
| CN108637416B (en) | Dismounting device after power module welding | |
| CN218602619U (en) | Safe flame-retardant protective shell of vehicle-mounted lithium battery | |
| CN217741929U (en) | Porous ceramic heating element | |
| CN211072623U (en) | Work fixture | |
| CN217713643U (en) | Silica gel sealing ring of formula of can splicing | |
| US3877189A (en) | Lattice assembly, e.g. for mosaic tiles, electrical circuit elements and display systems | |
| CN217498849U (en) | Fixing structure for artificial wetland aquatic plant floating island | |
| CN216879949U (en) | Keycap paint spraying jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Tianhao Inventor after: Wang Kai Inventor after: Bi Feifei Inventor after: Du Xiangyong Inventor after: Lan Shuhuai Inventor before: Jiang Tianhao Inventor before: Wang Kai Inventor before: Bi Feifei Inventor before: Du Xiangyong Inventor before: Peng Linfa Inventor before: Lan Shuhuai |
|
| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201306 factory building 1, No. 1500, cenglin Road, Lingang New District, pilot Free Trade Zone, Pudong New Area, Shanghai Applicant after: Shanghai Zhizhen new energy Co.,Ltd. Address before: 201306 factory building 1, no.1500, cenglin Road, Nicheng Town, Pudong New Area, Shanghai Applicant before: SHANGHAI ZHIZHEN NEW ENERGY EQUIPMENT CO.,LTD. |
|
| CB02 | Change of applicant information |