Rapid sealing connection structure of hydrogen fuel cell stack

Abstract

The utility model discloses a rapid sealing connection structure of a hydrogen fuel cell stack, and relates to the technical field of cell stacks. The rapid sealing connection structure of the hydrogen fuel cell stack comprises a shell and a shell cover, the shell cover is arranged above the shell, and the cell stack is arranged in the shell; the shell cover is rotationally connected with a rotating rod, and the shell and the shell cover are fixedly connected with a first connecting lug and a second connecting lug respectively; the first connecting lug and the second connecting lug are arranged on the periphery of the shell and the periphery of the shell cover respectively and are perpendicular to each other. And fixing mechanisms are arranged on the first connecting lug and the second connecting lug. According to the rapid sealing connection structure of the hydrogen fuel cell stack, multiple sealing is realized under the action of the sealing mechanism, so that the wear resistance of the sealing assembly is improved, the sealing effect between the shell and the shell cover is further ensured, the shell and the shell cover can be rapidly disassembled and assembled through the fixing mechanism, and subsequent replacement and maintenance of the cell stack are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of battery stack technology, and in particular to a fast sealing connection structure for hydrogen fuel cell stacks. Background Technology

[0002] A fuel cell stack is composed of multiple fuel cell cells stacked in series. Each cell is sealed with a seal and then fastened with screws after being pressed together by front and rear end plates. This constitutes a fuel cell stack. A hydrogen fuel cell stack is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy.

[0003] However, most existing fuel cell stacks typically seal the outer casing and cover with adhesive during assembly. This method can lead to adhesive wear over time, resulting in decreased sealing performance. Furthermore, closing the outer casing and cover usually involves securing them one by one with multiple bolts, which not only reduces closing efficiency but also increases labor intensity. Therefore, a rapid sealing connection structure for hydrogen fuel cell stacks is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a fast sealing connection structure for hydrogen fuel cell stacks. This structure can solve the problem that most existing fuel cell stacks are usually sealed between the stack shell and the cover by fixing adhesive during the assembly process. This method will cause adhesive wear in the long term, thus causing a decrease in sealing performance. At the same time, when closing the shell and the cover, multiple bolts are usually used to fix them one by one. This method not only reduces the closing efficiency, but also increases the labor intensity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-sealing connection structure for a hydrogen fuel cell stack, comprising an outer shell and a cover, wherein the cover is disposed above the outer shell, and the fuel cell stack is disposed inside the outer shell;

[0006] A rotating rod is rotatably connected to the shell cover, and a first connecting ear and a second connecting ear are fixedly connected to the outer shell and the shell cover, respectively.

[0007] The first connecting ear and the second connecting ear are respectively disposed around the outer shell and the cover, and are distributed perpendicularly to each other;

[0008] The first and second connecting ears are provided with fixing mechanisms, and the outer shell and the cover are provided with sealing mechanisms on opposite sides.

[0009] Preferably, the sealing mechanism includes an outer sealing ring, which is fixedly connected to the bottom of the cover;

[0010] An outer sealing groove is provided at the upper end of the outer casing.

[0011] Preferably, the sealing mechanism further includes an inner sealing ring, which is fixedly connected to the bottom of the cover and located inside the outer sealing ring;

[0012] An inner sealing groove is provided inside the upper part of the outer casing.

[0013] Preferably, the fixing mechanism includes a threaded rod fixedly connected to the first connecting lug, a large gear rotatably connected inside the cover, and the rotating rod fixedly connected to the large gear;

[0014] A positioning rod is rotatably connected to the inner top surface of the second connecting ear, and a small gear is fixedly connected to the lower end of the positioning rod. The small gear meshes with the large gear.

[0015] A nut is fixedly connected to the bottom of the small gear, and the nut is compatible with the threaded rod.

[0016] The bottom of the second connecting lug has a through hole that is compatible with the threaded rod.

[0017] Preferably, both the inner sealing groove and the inner sealing ring are stepped.

[0018] Preferably, both the outer sealing groove and the outer sealing ring are U-shaped.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) The rapid sealing connection structure of the hydrogen fuel cell stack can achieve rapid fixation between the shell cover and the outer shell through the sealing mechanism and the fixing mechanism. At the same time, under the action of the sealing mechanism, multiple seals are achieved, thus improving the wear resistance of the sealing components and ensuring the sealing effect between the outer shell and the shell cover. The fixing mechanism can achieve rapid disassembly and assembly between the outer shell and the shell cover, thus facilitating the subsequent replacement and maintenance of the fuel cell stack.

[0021] (2) The rapid sealing connection structure of the hydrogen fuel cell stack achieves a secondary sealing effect by setting the inner sealing ring and the inner sealing groove in a stepped shape. At the same time, the stepped layers of obstruction can improve the sealing effect and make the sealing mechanism have a longer service life. Since it is stepped, its wear resistance can be improved, thereby ensuring the sealing effect. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of a rapid sealing connection structure for a hydrogen fuel cell stack according to the present invention;

[0024] Figure 2 This is a schematic diagram showing the disassembled rapid sealing connection structure of a hydrogen fuel cell stack according to the present invention.

[0025] Figure 3 This is a schematic diagram showing the disassembled rapid sealing connection structure of a hydrogen fuel cell stack according to the present invention.

[0026] Figure 4 This is a schematic diagram of the interior of the shell cover of this utility model;

[0027] Figure 5 This utility model Figure 4 Enlarged diagram of point A in the middle.

[0028] Reference numerals in the attached drawings: 1. Outer shell; 2. Shell cover; 3. Rotating rod; 4. First connecting ear; 5. Second connecting ear; 6. Outer sealing ring; 7. Outer sealing groove; 8. Battery stack; 9. Inner sealing groove; 10. Inner sealing ring; 11. Large gear; 12. Small gear; 13. Positioning rod; 14. Threaded rod; 15. Nut; 16. Through hole. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Please see Figure 1-5This utility model provides a technical solution: a fast sealing connection structure for a hydrogen fuel cell stack, including an outer shell 1 and a cover 2, the cover 2 being disposed above the outer shell 1, and a battery stack 8 being disposed inside the outer shell 1;

[0034] A rotating rod 3 is rotatably connected to the cover 2, and a first connecting ear 4 and a second connecting ear 5 are fixedly connected to the outer shell 1 and the cover 2, respectively.

[0035] The first connecting ear 4 and the second connecting ear 5 are respectively disposed around the outer shell 1 and the shell cover 2, and are perpendicular to each other;

[0036] A fixing mechanism is provided on the first connecting ear 4 and the second connecting ear 5, and a sealing mechanism is provided on the opposite side of the outer shell 1 and the shell cover 2.

[0037] The fastening and sealing mechanisms enable rapid assembly of hydrogen fuel cell stacks, thus improving processing efficiency. Meanwhile, the sealing mechanism ensures the sealing performance of the hydrogen fuel cell stack.

[0038] Furthermore, the sealing mechanism includes an outer sealing ring 6, which is fixedly connected to the bottom of the cover 2;

[0039] The upper end of the outer shell 1 is provided with an outer sealing groove 7, and both the outer sealing groove 7 and the outer sealing ring 6 are U-shaped;

[0040] When the cover 2 and the outer shell 1 are closed, the outer sealing ring 6 extends into the inner part of the outer sealing groove 7, thus achieving a preliminary sealing effect;

[0041] The sealing mechanism also includes an inner sealing ring 10, which is fixedly connected to the bottom of the cover 2 and located inside the outer sealing ring 6.

[0042] The upper end of the outer shell 1 is provided with an inner sealing groove 9, and both the inner sealing groove 9 and the inner sealing ring 10 are stepped.

[0043] By setting the inner sealing ring 10 and the inner sealing groove 9 in a stepped shape, a secondary sealing effect is achieved. At the same time, the stepped layers of obstruction can improve the sealing effect and make the sealing mechanism have a longer service life. Since it is stepped, its wear resistance can be improved, thereby ensuring the sealing effect.

[0044] Furthermore, the fixing mechanism includes a threaded rod 14 fixedly connected to the first connecting ear 4, a large gear 11 rotatably connected inside the cover 2, and a rotating rod 3 fixedly connected to the large gear 11.

[0045] The inner top surface of the second connecting ear 5 is rotatably connected to a positioning rod 13, and the lower end of the positioning rod 13 is fixedly connected to a small gear 12, which meshes with a large gear 11.

[0046] A nut 15 is fixedly connected to the lower part of the pinion 12, and the nut 15 is compatible with the threaded rod 14.

[0047] The bottom of the second connecting ear 5 is provided with a through hole 16 that is compatible with the threaded rod 14;

[0048] When it is necessary to close the cover 2 and the outer shell 1, simply make the first connecting lug 4 and the second connecting lug 5 perpendicular and control the cover 2 to move downwards. This allows the threaded rod 14 to engage with the nut 15 through the through hole 16. At this time, the large gear 11 is rotated by the rotating rod 3. Since the small gear 12 meshes with the large gear 11, the small gear 12 rotates together with the large gear 11. As the small gear 12 rotates, the nut 15 rotates together. Therefore, the nut 15 moves downwards continuously, causing the cover 2 and the outer shell 1 to fit together and seal, thereby completing the assembly and sealing of the hydrogen fuel cell stack. By meshing the large gear 11 and the small gear 12, multiple nuts 15 can be rotated simultaneously, thus eliminating the need for traditional disassembly and assembly of multiple nuts 15 one by one, improving the efficiency of disassembly and assembly.

[0049] Working principle: When the cover 2 and the outer shell 1 are closed, the outer sealing ring 6 extends into the inner sealing groove 7, thus achieving a preliminary sealing effect. By setting the inner sealing ring 10 and the inner sealing groove 9 in a stepped shape, a secondary sealing effect is achieved. At the same time, the stepped layers of obstruction can improve the sealing effect and make the sealing mechanism have a longer service life. Because it is stepped, its wear resistance can be improved, thereby ensuring the sealing effect.

[0050] When it is necessary to close the cover 2 and the outer shell 1, simply make the first connecting lug 4 and the second connecting lug 5 perpendicular and control the cover 2 to move downwards. This allows the threaded rod 14 to engage with the nut 15 through the through hole 16. At this time, the large gear 11 is rotated by the rotating rod 3. Since the small gear 12 meshes with the large gear 11, the small gear 12 rotates together with the large gear 11. As the small gear 12 rotates, the nut 15 rotates together. Therefore, the nut 15 moves downwards continuously, causing the cover 2 and the outer shell 1 to fit together and seal, thereby completing the assembly and sealing of the hydrogen fuel cell stack. By meshing the large gear 11 and the small gear 12, multiple nuts 15 can be rotated simultaneously, thus eliminating the need for traditional disassembly and assembly of multiple nuts 15 one by one, improving the efficiency of disassembly and assembly.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A quick sealing connection structure of a hydrogen fuel cell stack comprising a housing (1) and a cover (2), characterized in that: The cover (2) is disposed above the outer shell (1), and the battery stack (8) is disposed inside the outer shell (1). A rotating rod (3) is rotatably connected to the shell cover (2), and a first connecting ear (4) and a second connecting ear (5) are fixedly connected to the outer shell (1) and the shell cover (2), respectively. The first connecting ear (4) and the second connecting ear (5) are respectively arranged around the outer shell (1) and the shell cover (2), and are distributed perpendicularly to each other; The first connecting ear (4) and the second connecting ear (5) are provided with a fixing mechanism, and the outer shell (1) and the cover (2) are provided with a sealing mechanism on opposite sides.

2. A quick seal connection structure for a hydrogen fuel cell stack according to claim 1, characterized by: The sealing mechanism includes an outer sealing ring (6), which is fixedly connected to the bottom of the cover (2); The upper end of the outer shell (1) is provided with an outer sealing groove (7).

3. A quick seal connection structure for a hydrogen fuel cell stack according to claim 2, characterized by: The sealing mechanism also includes an inner sealing ring (10), which is fixedly connected to the bottom of the cover (2) and located inside the outer sealing ring (6); An inner sealing groove (9) is provided inside the upper end of the outer shell (1).

4. A quick seal connection structure for a hydrogen fuel cell stack according to claim 3, characterized by: The fixing mechanism includes a threaded rod (14) fixedly connected to the first connecting ear (4), a large gear (11) rotatably connected inside the shell cover (2), and a rotating rod (3) fixedly connected to the large gear (11). The inner top surface of the second connecting ear (5) is rotatably connected to a positioning rod (13), and the lower end of the positioning rod (13) is fixedly connected to a small gear (12), which meshes with the large gear (11). A nut (15) is fixedly connected to the bottom of the pinion (12), and the nut (15) is compatible with the threaded rod (14); The bottom of the second connecting ear (5) is provided with a through hole (16) that is compatible with the threaded rod (14).

5. A quick seal connection structure for a hydrogen fuel cell stack according to claim 3, characterized by: Both the inner sealing groove (9) and the inner sealing ring (10) are stepped.

6. A quick seal connection structure for a hydrogen fuel cell stack according to claim 2, characterized by: Both the outer sealing groove (7) and the outer sealing ring (6) are U-shaped.

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