Stacking shell positioning device for fuel cell stack

Abstract

The invention discloses a fuel cell stack stacking shell positioning device which comprises a base (1), side frames (2) are arranged on the two sides of the bottom of the base (1), a cell (6) is placed on the base (1), a fixed backup plate (3) is arranged between the side frames (2) on the two sides, the fixed backup plate (3) is located behind the side frames (2) and used for abutting against the cell (6), and meanwhile clamping mechanisms (4) are arranged on the side frames (2) and used for clamping the cell (6). The clamping mechanisms (4) are symmetrically arranged on the side frames (2) on the two sides and are used for clamping and fixing a battery cell (6) from the two sides, and a lifting mechanism (5) used for lifting the battery cell (6) is arranged on the placing base (1); a special tool is used for lifting, clamping and positioning a shell, and a reactor core lifting mechanism (5) is matched, so that a certain gap is formed between a reactor core and the shell in the stacking process of the reactor core of the electric reactor, and the problems of skew of the reactor core, poor sealing and the like caused by scratching, collision and the like of the reactor core and the shell in the stacking process are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fuel cell processing. Specifically, the present invention relates to a positioning device for a fuel cell stack housing. Background Art

[0002] As one of the important carriers of hydrogen energy application, hydrogen fuel cell vehicles will play a huge demonstration role in the development of the hydrogen energy industry. At present, hydrogen energy has been widely applied in many fields. Hydrogen fuel cells are developing rapidly. There are various sizes and models of fuel cell systems. The fuel cell system is a highly integrated product, and each sub-module assembly of the fuel cell is a highly integrated component.

[0003] In a published specification with the patent number 202311772545.X and a publication date of April 16, 2024, a stack assembly tooling structure for an adjustable fuel cell long stack is disclosed, which can be used for the stacking and assembly of high-power multi-cell stacks. It includes a bottom plate assembly, an adjustment and positioning assembly, and a reinforcement assembly. The bottom plate assembly includes a bottom plate, and slideways are distributed along the edge of the bottom plate. A locking and adjustment structure is provided at the slideways. The adjustment and positioning assembly includes a long rod with locking holes opened thereon. The reinforcement assembly includes columns and an anti-expansion frame outside the columns. The present invention has a reinforcement and adjustment and positioning structure for the stack, and can adjust the size according to the actual situation of the stack and the workpiece, meeting the use requirements of stack stacking. This structural design method can maintain the volume specific power of the fuel cell, and at the same time improve the uniformity of fluid distribution of the fuel cell stack, solving the problem of uneven stacking of the long stack caused by the deformation of the long stack stacking tooling, and can be widely promoted in the fields of fuel cells and the like.

[0004] Since the stacking production of stack products is related to the performance parameter indicators of the entire system, if the stack stacking is unqualified or has poor precision, the reliability and durability of the entire system cannot be guaranteed. In the prior art, during the stack stacking process, problems such as the core being scratched and knocked against the housing, resulting in the core being skewed and poor core sealing are likely to occur. Summary of the Invention

[0005] The present invention aims to provide a positioning device for a fuel cell stack housing that avoids problems such as the core being scratched and knocked against the housing.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a positioning device for a fuel cell stack housing, including a base, a side frame is provided on the base, a fixed backing plate is provided between the side frames, a clamping mechanism is provided on the side frame, a lifting mechanism is provided on the base, and an electric core placed on the base is provided between the clamping mechanisms.

[0007] The clamping mechanism includes a top cylinder and a bottom cylinder provided on the side frame. The battery cell is located between the top cylinders on both sides and between the bottom cylinders on both sides. A long clamping plate is provided on the top cylinder, and a short clamping plate is provided on the bottom cylinder.

[0008] The clamping mechanism further includes a front-end cylinder provided at the front end of the side frame. The front-end cylinder is located on the side of the side frame away from the fixed backrest. A slide rail and a slider are provided on the side frame. The front-end cylinder is provided on the slider, and the end of the front-end cylinder faces the center of the side frame on both sides. A pressing plate is provided on the front-end cylinder.

[0009] A moving track is provided on the base and a moving trolley is provided on the track. The battery cell is placed on the moving trolley. A roller set is provided at one end of the base away from the side frame, and the roller set is located between the moving tracks on both sides.

[0010] The moving trolley is divided into a moving seat connected to the moving track and a support plate provided on the moving seat. The battery cell is lapped on the support plate. Guide plates are provided on both sides of the battery cell on the support plate, and the middle part of the bottom surface of the battery cell is in a suspended state.

[0011] The battery cell is divided into a bottom plate and a housing provided on the bottom plate. The bottom plate is located on the base. A core housing is provided inside the housing. A placement plate is provided inside the core housing. The placement plate is slidably provided inside the core housing. The bottom plate is hollow, and slots are provided on both sides of the core housing.

[0012] The lifting mechanism includes a side plate provided on the side frame. A side rail is provided on the side plate. A lifting block is provided on the side rail. A top plate and a side push cylinder provided inside the top plate are provided on the lifting block. A clamping block matching the battery cell is provided at the end of the side push cylinder.

[0013] An electric chain is provided on the side plate. The electric chain is connected to the lifting block. A cover plate is provided on the lifting block. The side push cylinder is located below the cover plate. The cover plate is located between adjacent bottom cylinders. The clamping block is inserted into the battery cell.

[0014] A base plate is provided inside the base. A lifting rod is provided on the base plate. A positioning plate is provided at the end of the lifting rod. The positioning plate is located below the battery cell. A positioning pin and a positioning groove matching the placement plate are provided on the surface of the positioning plate.

[0015] A positioning rail matching the placement plate is provided inside the core housing. The positioning plate is located directly below the placement plate. The placement plate is inserted into the interior of the core housing, and the outer edge surface of the placement plate is attached to the positioning rail.

[0016] The technical effect of the present invention is as follows: By using a special tooling to lift and clamp and position the housing, and cooperating with the core lifting mechanism, a certain gap is formed between the core and the housing during the stacking process of the fuel cell stack core, avoiding problems such as core skew and poor sealing caused by scraping and bumping between the core and the housing during stacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, and the shown contents are respectively:

[0018] Figure 1 It is a schematic structural diagram of a positioning device for a fuel cell stack stacking housing according to the present invention;

[0019] Figure 2 For Figure 1 It is a schematic side frame structure diagram of a positioning device for a fuel cell stack stacking housing in

[0020] Figure 3 For Figure 1 It is a schematic diagram of the cell clamping state of a positioning device for a fuel cell stack stacking housing in

[0021] Figure 4 For Figure 1 It is a schematic diagram of a positioning plate of a positioning device for a fuel cell stack stacking housing in

[0022] Figure 5 For Figure 1 It is a schematic diagram of the structure of the positioning plate and the core housing of a positioning device for a fuel cell stack stacking housing in

[0023] The marks in the figure are: 1, base; 2, side frame; 3, fixed backing plate; 4, clamping mechanism; 41, top cylinder; 42, bottom cylinder; 43, long clamping plate; 44, short clamping plate; 45, front cylinder; 46, slide rail; 47, slider; 48, pressing plate; 49, rubber plate; 5, lifting mechanism; 51, side plate; 52, side rail; 53, lifting block; 54, side pushing cylinder; 55, clamping block; 56, electric chain; 57, cover plate; 6, cell; 61, bottom plate; 62, outer shell; 63, core housing; 64, placement plate; 65, slot; 66, positioning rail; 7, moving track; 8, moving trolley; 81, moving seat; 82, support plate; 83, guiding plate; 9, roller group; 10, substrate; 11, lifting rod; 12, positioning plate; 13, connecting plate; 14, positioning pin; 15, positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will further describe in detail the specific embodiments of the present invention with reference to the drawings, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and contribute to its implementation.

[0025] Please refer to Figures 1-5 , a positioning device for a fuel cell stack housing, comprising a base 1. On both sides of the bottom of the base 1, side frames 2 are provided. A battery cell 6 is placed on the base 1. Between the two side frames 2, there is a fixed backing plate 3. The fixed backing plate 3 is located behind the side frames 2 and is used to hold the battery cell 6. In this way, after the battery cell 6 is pushed and moved to the end, it is blocked by the fixed backing plate 3, and the fixed backing plate 3 is used to position the battery cell 6. There are two fixed backing plates 3, which are arranged vertically behind the side frames 2. In this way, the battery cell 6 can be balanced, and it can be avoided that during the movement of the battery cell 6, only one fixed backing plate 3 causes the situation of tilting and collapsing, and dangerous accidents can be avoided. At the same time, a clamping mechanism 4 is provided on the side frames 2. The clamping mechanism 4 is symmetrically arranged on the two side frames 2 and clamps and fixes the battery cell 6 from both sides. A lifting mechanism 5 for lifting the battery cell 6 is provided on the placing base 1; the housing is lifted and clamped and positioned by a special tooling, and in cooperation with the stack core lifting mechanism 5, a certain gap is formed between the stack core and the housing during the stacking process of the fuel cell stack, so as to avoid problems such as the stack core being skewed and the sealing being poor caused by the scraping and bumping between the stack core and the housing during the stacking process.

[0026] The clamping mechanism 4 includes a top cylinder 41 and a bottom cylinder 42 provided on the side frame 2. The top cylinder 41 is symmetrically arranged on the two side frames 2. A connecting plate 13 is provided at the top of the side frame 2. The top cylinder 41 is arranged in the middle of the connecting plate 13. A long clamping plate 43 is provided on the top cylinder 41. Four rubber plates 49 are evenly laid on the surface of the long clamping plate 43 to protect the battery cell 6 with the rubber plates 49 and reduce the damage to the surface of the battery cell 6 due to clamping. The bottom cylinder 42 is symmetrically arranged at the bottom of the two side frames 2. A short clamping plate 44 is provided on the bottom cylinder 42. Rubber plates 49 are also provided on the surface of the short clamping plate 44. The battery cell 6 is located between the two top cylinders 41 on both sides, and the battery cell 6 is located between the two bottom cylinders 42 on both sides. After the battery cell 6 is moved between the side frames 2 and lifted by the lifting mechanism 5, the two top cylinders 41 and the bottom cylinders 42 on both sides respectively push out the long clamping plate 43 and the short clamping plate 44, and clamp the battery cell 6 from both sides, thereby fixing the battery cell 6, so that the position of the battery cell 6 is determined and will not shift. At the same time, problems such as the stack core being skewed and the sealing being poor caused by the scraping and bumping between the stack core and the housing during the stacking process can be avoided.

[0027] The clamping mechanism 4 further includes a front-end cylinder 45 disposed at the front end of the side frame 2. The front-end cylinder 45 is located on the side of the side frame 2 away from the fixed backing plate 3. A slide rail 46 and a slider 47 are provided on the side frame 2. The front-end cylinder 45 is disposed on the slider 47. The end of the front-end cylinder 45 faces the center of the side frames 2 on both sides. A pressing plate 48 is provided on the front-end cylinder 45. After the top cylinders 41 and the bottom cylinders 42 on the left and right sides clamp the battery cell 6, the front-end cylinder 45 is driven by the electric slider 47 and moves towards the middle along the slide rail 46. When the front-end cylinder 45 moves to the outside of the battery cell 6, the front-end cylinder 45 pushes the pressing plate 48 to move towards the battery cell 6. By the cooperation of the pressing plate 48 and the fixed backing plate 3, the battery cell 6 is clamped from the front and rear ends, and the position of the battery cell 6 is fixed. At the same time, there are two front-end cylinders 45 in total, which are disposed at the front end of the side frame 2 on the same side and are distributed up and down, corresponding to the positions of the two fixed backing plates 3 at the rear. This can avoid the situation that the battery cell 6 is skewed and toppled during the clamping process. Multiple front-end cylinders 45 can strengthen the fixing effect and minimize the shaking and other situations during the stacking process.

[0028] A moving track 7 is provided on the base 1 and a moving trolley 8 is disposed on the track. The battery cell 6 is placed on the moving trolley 8. A roller group 9 is provided at one end of the base 1 away from the side frame 2. The roller group 9 is located between the moving tracks 7 on both sides. The roller group 9 is located at one end of the base 1 away from the side frame 2. When the battery cell 6 is moved onto the moving trolley 8, the roller group 9 will support the middle part of the battery cell 6. The roller group 9 is composed of a mounting plate disposed on the base 1, fixed plates disposed on both sides of the mounting plate, and multiple rollers disposed between the top plates. Adjacent rollers are connected together by a belt. Since the rollers support the middle part of the battery cell 6, it is convenient for the moving trolley 8 to move the battery cell 6, reducing the situation that the friction is too large due to the pressure of the battery cell 6 and it cannot move smoothly.

[0029] The moving trolley 8 is divided into a moving base 81 connected to the moving track 7 and a support plate 82 arranged on the moving base 81. The battery cell 6 is lapped on the support plate 82. Guide plates 83 are arranged on the support plate 82 on both sides of the battery cell 6, and the middle part of the bottom surface of the battery cell 6 is in a suspended state. There are two moving tracks 7, which are respectively arranged on both sides of the base 1. An electrically controlled moving trolley 8 is arranged on each moving track 7. The moving base 81 is arranged on the moving track 7. The battery cell 6 is placed on the support plates 82 on both sides. The support plates 82 are located at the bottoms of the left and right sides of the battery cell 6. The guide plates 83 are attached to both sides of the battery cell 6. The inner edge of the end of the guide plate 83 is an inclined surface, which is convenient for the battery cell 6 to enter between the two guide plates 83. The guide plates 83 are used to limit the position of the battery cell 6, and the guide plates 83 can also play a preliminary clamping effect. In this way, it is convenient to move the battery cell 6 and the subsequent clamping of the clamping mechanism 4, reducing the offset of the battery cell 6. At the same time, since the middle part of the ground of the battery cell 6 is suspended, the roller shaft can well support the battery cell 6, and it is also convenient for the subsequent lifting mechanism 5 to jack up the structure inside the battery cell 6 from the bottom.

[0030] The battery cell 6 is divided into a bottom plate 61 and a housing 62 arranged on the bottom plate 61. The bottom plate 61 is located on the base 1. The bottom plate 61 is placed on the support plates 82 on both sides. The movement of the moving trolley 8 is used to drive the movement of the battery cell 6. A core housing 63 is arranged inside the housing 62. The core housing 63 is used to protect the core placed inside it. A placement plate 64 is arranged inside the core housing 63. The cores are stacked on the placement plate 64. The placement plate 64 is slidably arranged inside the core housing 63, and the placement plate 64 will slide along the inner wall of the core housing 63. When no core is placed, the placement plate 64 is jacked up by the lifting mechanism 5 and is located at the highest end inside the core housing 63. As the cores are continuously stacked and placed, the placement plate 64 descends until the stacking placement of the cores is completed. The bottom plate 61 is hollow. After the core housing 63 is fixed, the lifting mechanism 5 can pass through the gap part in the middle of the bottom plate 61 and jack up the placement plate 64. Slots 65 are arranged on both sides of the core housing 63. The slots 65 are also for cooperating with the lifting mechanism 5 to lift the core housing 63, facilitating the placement of the cores.

[0031] The lifting mechanism 5 includes a side plate 51 arranged on the side frame 2. A side rail 52 is arranged on the side plate 51. A lifting block 53 is arranged on the side rail 52. A top plate and a side push cylinder 54 arranged inside the top plate are arranged on the lifting block 53. A clamping block 55 matched with the battery cell 6 is arranged at the end of the side push cylinder 54. The side push cylinder 54 will push the clamping block 55 to move. By inserting the clamping block 55 into the slots 65 on both sides of the core housing 63 of the battery cell 6, the battery cell 6 can be lifted and lowered along with the side push cylinder 54. The lifting block 53 can drive the core housing 63 to lift and lower along the side rail 52 through the side push cylinder 54. By driving the core housing 63 to rise, the positions of the core housing 63 and the placement plate 64 inside it can be raised, which is convenient for the stacking and placement of the cores inside the core housing 63.

[0032] An electric chain 56 is provided on the side plate 51. The electric chain 56 is connected to the lifting block 53. The lifting of the lifting block 53 is driven by the electric chain 56. A cover plate 57 is provided on the lifting block 53. The side push cylinder 54 is located below the cover plate 57. The cover plate 57 is used to connect the lifting block 53 and the side push cylinder 54 together. Two side push cylinders 54 are provided below one cover plate 57 to improve the connection strength between the lifting mechanism 5 and the battery cell 6. The two side push cylinders 54 are used to share the pressure and reduce the occurrence of the fracture of the side push cylinder 54. Moreover, since two side push cylinders 54 and clamping blocks 55 are provided on one side, the shaking generated during the lifting of the battery cell 6 can be avoided. The cover plate 57 is located between adjacent bottom cylinders 42 and clamps the battery cell 6 from the middle of the battery cell 6, making the lifting of the battery cell 6 more stable. The clamping block 55 is inserted into the battery cell 6, and the battery cell 6 is lifted by inserting the clamping block 55 into the battery cell 6.

[0033] A base plate 10 is provided inside the base 1. A lifting rod 11 is provided on the base plate 10. A positioning plate 12 is provided at the end of the lifting rod 11. The positioning plate 12 is located below the battery cell 6. A positioning pin 14 and a positioning groove 15 that cooperate with the placement plate 64 are provided on the surface of the positioning plate 12. The lifting rod 11 expands and contracts to drive the positioning plate 12 to lift and lower. The positioning plate 12 passes through the empty groove in the middle of the bottom plate 61 and enters the core body shell 63, thereby lifting the placement plate 64. At the same time, the positioning pin 14 and the positioning groove 15 on the surface of the positioning plate 12 cooperate with the shape of the bottom of the placement plate 64, which can avoid the deviation of the placement plate 64. After the placement plate 64 is lifted, it is convenient to place the core body subsequently. And as the core body is gradually placed, the lifting rod 11 can drive the positioning plate 12 and the placement plate 64 to gradually lower, so that the core body can always be protected inside the core body shell 63.

[0034] A positioning rail 66 that cooperates with the placement plate 64 is provided on the inner side of the core body shell 63. The positioning plate 12 is located directly below the placement plate 64. The placement plate 64 is inserted into the core body shell 63. The outer edge surface of the placement plate 64 is fitted with the positioning rail 66. The positioning rail 66 is used to facilitate the movement of the placement plate 64.

[0035] Working principle: The battery cell 6 sent above the base 1 via the assembly line is placed on the moving trolley 8. The support plate 82 supports the battery cell 6. As the moving trolley 8 drives the battery cell 6 to move

[0036] After moving to the side frames 2 on both sides, the lifting mechanism 5 starts to move. The side push cylinder 54 pushes the clamping block 55 into the slot 65 on the surface of the core housing 63. Subsequently, the electric chain 56 drives the lifting block 53 to rise, thereby lifting the core housing 63. Then, the top cylinders 41 and the bottom cylinders 42 on both sides push the long clamping plates 43 and the short clamping plates 44 closer to the core housing 63 to clamp the core housing 63. Subsequently, the front-end cylinder 45 extends to cooperate with the fixed backing plate 3 to fix the front-end core housing 63 from the front and back sides. The lifting rod 11 pushes the positioning plate 12 and the placement plate 64 up to the highest point. Subsequently, the cores are placed in a left-right cycle. And as the cores are gradually placed, the lifting rod 11 can drive the positioning plate 12 and the placement plate 64 to gradually descend, so that the cores can always be protected inside the core housing 63, and finally the assembly of the battery cell 6 is completed.

[0037] The technical effect of the present invention is: by using a special tooling to lift and clamp and position the housing, and cooperating with the core stacking lifting mechanism 5, a certain gap is formed between the core of the fuel cell stack and the housing during the stacking process of the fuel cell stack core, avoiding problems such as core skew and poor sealing caused by scraping and bumping between the core and the housing during stacking.

[0038] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all are within the protection scope of the present invention.

Claims

1. A fuel cell stack casing positioning device, characterized in that: The invention comprises a base (1), the base (1) is provided with side frames (2), a fixed support plate (3) is provided between the side frames (2), a clamping mechanism (4) is provided on the side frames (2), the base (1) is provided with a lifting mechanism (5), and an electric core (6) placed on the base (1) is provided between the clamping mechanisms (4).

2. A fuel cell stack casing positioning device according to claim 1, characterized in that: The clamping mechanism (4) comprises a top cylinder (41) and a bottom cylinder (42) arranged on the side frame (2); the battery cell (6) is located between the top cylinders (41) on both sides; the battery cell (6) is located between the bottom cylinders (42) on both sides; a long clamping plate (43) is provided on the top cylinder (41); and a short clamping plate (44) is provided on the bottom cylinder (42).

3. A fuel cell stack casing positioning device according to claim 2, characterized in that: The clamping mechanism (4) further comprises a front end cylinder (45) arranged at the front end of the side frame (2), the front end cylinder (45) being located on a side of the side frame (2) away from the fixed support plate (3), the side frame (2) being provided with a slide rail (46) and a slider (47), the front end cylinder (45) being arranged on the slider (47), the end of the front end cylinder (45) being oriented toward the center of the side frames (2) on both sides, and a pressure plate (48) being provided on the front end cylinder (45).

4. A fuel cell stack casing positioning device according to claim 1, characterized in that: The base (1) is provided with a movable track (7) and a movable trolley (8) arranged on the track, the battery cell (6) is placed on the movable trolley (8), and a roller group (9) is provided at one end of the base (1) away from the side frame (2), and the roller group (9) is located between the movable tracks (7) on both sides.

5. A fuel cell stack casing positioning device according to claim 4, characterized in that: The movable trolley (8) is divided into a movable seat (81) connected to the movable track (7) and a support plate (82) arranged on the movable seat (81); the battery cell (6) is overlapped on the support plate (82); guide plates (83) located on both sides of the battery cell (6) are arranged on the support plate (82); and the middle part of the bottom surface of the battery cell (6) is in a suspended state.

6. A fuel cell stack casing positioning device according to claim 5, characterized in that: The battery core (6) is divided into a bottom plate (61) and an outer shell (62) arranged on the bottom plate (61); the bottom plate (61) is located on the base (1); a core shell (63) is arranged inside the outer shell (62); a placement plate (64) is arranged inside the core shell (63); the placement plate (64) is slidably arranged inside the core shell (63); the bottom plate (61) is hollow; slots (65) are arranged on both sides of the core shell (63).

7. A fuel cell stack casing positioning device according to claim 1, characterized in that: The lifting mechanism (5) comprises a side plate (51) arranged on the side frame (2), the side plate (51) being provided with a side rail (52), the side rail (52) being provided with a lifting block (53), the lifting block (53) being provided with a top plate and a side thrust cylinder (54) arranged inside the top plate, and the end of the side thrust cylinder (54) being provided with a clamping block (55) matching with the battery cell (6).

8. A fuel cell stack casing positioning device according to claim 7, characterized in that: An electric chain (56) is provided on the side plate (51), the electric chain (56) is connected to the lifting block (53), a cover plate (57) is provided on the lifting block (53), the side thrust cylinder (54) is located below the cover plate (57), the cover plate (57) is located between adjacent bottom cylinders (42), and the clamping block (55) is inserted into the battery core (6).

9. A fuel cell stack casing positioning device according to claim 6, characterized in that: A base plate (10) is provided in the base (1), a lifting rod (11) is provided on the base plate (10), a positioning plate (12) is provided at the end of the lifting rod (11), the positioning plate (12) is located below the battery cell (6), and a positioning pin (14) and a positioning groove (15) that match the placement plate (64) are provided on the surface of the positioning plate (12).

10. A fuel cell stack casing positioning device according to claim 9, characterized in that: The inner side of the core shell (63) is provided with a positioning rail (66) matched with the placement plate (64); the positioning plate (12) is located directly below the placement plate (64); the placement plate (64) is inserted into the core shell (63); and the outer edge surface of the placement plate (64) is in contact with the positioning rail (66).

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