Quick assembly structure for hydrogen fuel cell

Abstract

The utility model belongs to the technical field of fuel cells, and relates to a quick assembly structure for a hydrogen fuel single cell, which comprises a bottom plate and a cover plate which are in guide fit connection along the vertical direction, an upper groove is formed on the bottom plate, and two ends of the upper groove are respectively provided with a first plane; an avoiding groove is formed in the bottom surface of the cover plate, a second plane is formed in the middle of the avoiding groove, and third planes are arranged at the two ends of the second plane respectively; the bottom plate and the cover plate are in positioning connection through a guide positioning assembly, the third plane corresponds to the first plane, and the upper groove corresponds to the second plane. According to the utility model, an inner frame positioning structure is adopted, so that the positioning and supporting effects are simultaneously realized, and the smoothness of the membrane electrode is ensured; the structure can be quickly disassembled and assembled, so that the single batteries can be conveniently placed and taken out; the whole structure can be made to be similar to a bipolar plate in size, and is light in weight and convenient to move.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel cells and relates to a rapid assembly structure for a hydrogen fuel cell. Background Art

[0002] In recent years, new energy vehicles have become a hot topic of research and attention. Among them, hydrogen fuel cell vehicles have developed rapidly in the new energy vehicle industry due to their advantages such as fast start-up speed, high energy conversion efficiency, and environmental friendliness. A hydrogen fuel cell stack is composed of a series of single cells, and a single cell is composed of a bipolar plate and a membrane electrode assembly. The quality of a single cell directly affects the performance of the entire stack.

[0003] The existing single cell assembly technology is to assemble the bipolar plate and the membrane electrode together through the outer frame positioning device. Due to the large size of the single cell, the outer frame positioning method will cause the positioning device to be large in size, which is inconvenient to operate. At the same time, due to the softness of the membrane electrode material, the outer frame positioning will cause the membrane electrode to wrinkle during the assembly process, affecting the assembly effect and ultimately affecting the performance of the finished product. Summary of the invention

[0004] In view of the above problems, the utility model provides a rapid assembly structure for a hydrogen fuel cell, which can effectively and accurately control the positioning of the bipolar plate and the membrane electrode, thereby ensuring the assembly accuracy, and is light in weight and easy to operate, thereby ultimately improving the assembly efficiency and qualification rate of the cell.

[0005] According to the technical solution of the utility model: a rapid assembly structure for a hydrogen fuel cell, characterized in that: it comprises a bottom plate and a cover plate which are connected in a vertical direction, an upper groove is constructed on the bottom plate, and first planes are respectively arranged at both ends of the upper groove;

[0006] The bottom surface of the cover plate is provided with an avoidance groove, the middle of the avoidance groove forms a second plane, and third planes are respectively provided at both ends of the second plane;

[0007] The bottom plate and the cover plate are positioned and connected via a guide positioning assembly, the third plane corresponds to the first plane, and the upper groove corresponds to the second plane.

[0008] As a further improvement of the utility model, the guiding and positioning assembly includes an upper positioning groove arranged on the bottom plate and a lower positioning groove arranged on the bottom surface of the cover plate, and the upper positioning groove and the lower positioning groove are guided and positioned by a positioning block.

[0009] As a further improvement of the utility model, the upper positioning groove includes a first upper positioning groove, a second upper positioning groove, a third upper positioning groove, and a fourth upper positioning groove, wherein the first upper positioning groove and the second upper positioning groove are arranged at one end of the upper groove, and the third upper positioning groove and the fourth upper positioning groove are arranged at the other end of the upper groove;

[0010] The lower positioning grooves include a first lower positioning groove, a second lower positioning groove, a third lower positioning groove, and a fourth lower positioning groove, wherein the first lower positioning groove and the second lower positioning groove are arranged at one end of the first plane, and the third lower positioning groove and the fourth lower positioning groove are arranged at the other end of the first plane;

[0011] The first lower positioning groove and the first upper positioning groove are positioned and connected by a first positioning block, the second lower positioning groove and the second upper positioning groove are positioned and connected by a second positioning block, the third lower positioning groove and the third upper positioning groove are positioned and connected by a third positioning block, and the fourth lower positioning groove and the fourth upper positioning groove are positioned and connected by a fourth positioning block.

[0012] As a further improvement of the utility model, the first upper positioning groove and the fourth upper positioning groove are arranged diagonally and have the same structure, and the second upper positioning groove and the third upper positioning groove are arranged diagonally and have the same structure;

[0013] The first lower positioning groove and the fourth lower positioning groove are arranged diagonally and have the same structure, and the second lower positioning groove and the third lower positioning groove are arranged diagonally and have the same structure;

[0014] The second positioning block has the same structure as the third positioning block, and the first positioning block has the same structure as the fourth positioning block.

[0015] As a further improvement of the present invention, chamfers are respectively provided on the upper end edges of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block.

[0016] The technical effects of the utility model are: the utility model adopts an inner frame positioning structure, which plays a positioning and supporting role at the same time, ensuring the flatness of the membrane electrode; the structure can be quickly disassembled and assembled, which is convenient for the placement and removal of single batteries; the overall structure can be made to be close to the size of the bipolar plate, with a light weight and easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an explosion diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the bottom plate of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the cover plate in the utility model.

[0021] Figure 5 This is a schematic diagram of the workpiece assembly. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0023] Figures 1 to 5 In it, it includes a base plate 1, an upper groove 101, a first plane 102, a first upper positioning groove 103, a second upper positioning groove 104, a third upper positioning groove 105, a fourth upper positioning groove 106, a first positioning block 2, a second positioning block 3, a third positioning block 4, a cover plate 5, an avoidance groove 501, a second plane 502, a first lower positioning groove 503, a second lower positioning groove 504, a third lower positioning groove 505, a fourth lower positioning groove 506, a fourth positioning block 6, a first workpiece 7, a second workpiece 8, etc.

[0024] like Figures 1 to 5 As shown, the utility model is a quick assembly structure for a hydrogen fuel cell, comprising a bottom plate 1 and a cover plate 5 which are connected in a vertical direction, an upper groove 101 is formed on the bottom plate 1, and first planes 102 are respectively arranged at both ends of the upper groove 101. When working, the upper groove 101 contacts the second workpiece 8, and the first plane 102 contacts the cell.

[0025] The bottom surface of the cover plate 5 is provided with an avoidance groove 501, the middle of the avoidance groove 501 forms a second plane 502, and the two ends of the second plane 502 are respectively provided with third planes 507. During operation, the avoidance groove 501 and the second plane 502 are both in contact with the first workpiece 7.

[0026] The bottom plate 1 and the cover plate 5 are positioned and connected via a guide and positioning assembly. The third plane 507 corresponds to the first plane 102 , and the upper groove 101 corresponds to the second plane 502 .

[0027] The guiding and positioning assembly comprises an upper positioning groove arranged on the bottom plate 1 and a lower positioning groove arranged on the bottom surface of the cover plate 5 , and the upper positioning groove and the lower positioning groove are matched with each other for guiding and positioning via a positioning block.

[0028] The upper positioning grooves include a first upper positioning groove 103 , a second upper positioning groove 104 , a third upper positioning groove 105 , and a fourth upper positioning groove 106 , wherein the first upper positioning groove 103 and the second upper positioning groove 104 are arranged at one end of the upper groove 101 , and the third upper positioning groove 105 and the fourth upper positioning groove 106 are arranged at the other end of the upper groove 101 .

[0029] The lower positioning grooves include a first lower positioning groove 503 , a second lower positioning groove 504 , a third lower positioning groove 505 , and a fourth lower positioning groove 506 , wherein the first lower positioning groove 503 and the second lower positioning groove 504 are arranged at one end of the first plane 102 , and the third lower positioning groove 505 and the fourth lower positioning groove 506 are arranged at the other end of the first plane 102 .

[0030] The first lower positioning groove 503 and the first upper positioning groove 103 are positioned and connected by the first positioning block 2, the second lower positioning groove 504 and the second upper positioning groove 104 are positioned and connected by the second positioning block 3, the third lower positioning groove 505 and the third upper positioning groove 105 are positioned and connected by the third positioning block 4, and the fourth lower positioning groove 506 and the fourth upper positioning groove 106 are positioned and connected by the fourth positioning block 6.

[0031] The first upper positioning groove 103 and the fourth upper positioning groove 106 are arranged diagonally and have the same structure, and the second upper positioning groove 104 and the third upper positioning groove 105 are arranged diagonally and have the same structure.

[0032] The first lower positioning groove 503 and the fourth lower positioning groove 506 are arranged diagonally and have the same structure, and the second lower positioning groove 504 and the third lower positioning groove 505 are arranged diagonally and have the same structure.

[0033] The second positioning block 3 has the same structure as the third positioning block 4 , and the first positioning block 2 has the same structure as the fourth positioning block 6 .

[0034] The upper edges of the first positioning block 2 , the second positioning block 3 , the third positioning block 4 and the fourth positioning block 6 are chamfered respectively.

[0035] like Figures 1 to 5 As shown, the working principle of the utility model is as follows: when working, the upper groove 101 contacts the second workpiece 8 to play a supporting and positioning role.

[0036] The first plane 102 contacts the second workpiece 8 and plays a supporting role. The height difference between the first plane 102 and the bottom surface of the upper groove 101 can ensure the flatness of the single cell.

[0037] The avoidance groove 501 avoids the sealing ring of the first workpiece 7 , and the second plane 502 contacts the first workpiece 7 to ensure uniform force on the first workpiece 7 .

[0038] The relative positions of the first upper positioning groove 103 , the second upper positioning groove 104 , the third upper positioning groove 105 , and the fourth upper positioning groove 106 ensure the precise positioning of the first positioning block 2 , the second positioning block 3 , the third positioning block 4 , and the fourth positioning block 6 .

[0039] The first positioning block 2 , the second positioning block 3 , the third positioning block 4 , and the fourth positioning block 6 pass through the second workpiece 8 to play a positioning and supporting role.

[0040] The first positioning block 2 , the second positioning block 3 , the third positioning block 4 and the fourth positioning block 6 pass through the first workpiece 7 to play a positioning role.

[0041] The first lower positioning groove 503, the second lower positioning groove 504, the third lower positioning groove 505, and the fourth lower positioning groove 506 are positioned by the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6, and the positioning method is clearance fit to ensure fast assembly.

Claims

1. A rapid assembly structure for a hydrogen fuel cell, characterized in that: It comprises a base plate (1) and a cover plate (5) which are connected in a vertically oriented manner, an upper groove (101) being formed on the base plate (1), and first planes (102) are respectively arranged at both ends of the upper groove (101); The bottom surface of the cover plate (5) is provided with an avoidance groove (501), the middle of the avoidance groove (501) forms a second plane (502), and third planes (507) are respectively provided at both ends of the second plane (502); The bottom plate (1) and the cover plate (5) are positioned and connected via a guide positioning assembly; the third plane (507) corresponds to the first plane (102); and the upper groove (101) corresponds to the second plane (502).

2. The rapid assembly structure for a hydrogen fuel cell according to claim 1, characterized in that: The guiding and positioning assembly comprises an upper positioning groove arranged on the bottom plate (1) and a lower positioning groove arranged on the bottom surface of the cover plate (5), and the upper positioning groove and the lower positioning groove are matched for guiding and positioning via a positioning block.

3. The rapid assembly structure for a hydrogen fuel cell according to claim 2, characterized in that: The upper positioning grooves include a first upper positioning groove (103), a second upper positioning groove (104), a third upper positioning groove (105), and a fourth upper positioning groove (106), wherein the first upper positioning groove (103) and the second upper positioning groove (104) are arranged at one end of the upper groove (101), and the third upper positioning groove (105) and the fourth upper positioning groove (106) are arranged at the other end of the upper groove (101); The lower positioning grooves include a first lower positioning groove (503), a second lower positioning groove (504), a third lower positioning groove (505), and a fourth lower positioning groove (506), wherein the first lower positioning groove (503) and the second lower positioning groove (504) are arranged at one end of the first plane (102), and the third lower positioning groove (505) and the fourth lower positioning groove (506) are arranged at the other end of the first plane (102); The first lower positioning groove (503) and the first upper positioning groove (103) are positioned and connected via a first positioning block (2), the second lower positioning groove (504) and the second upper positioning groove (104) are positioned and connected via a second positioning block (3), the third lower positioning groove (505) and the third upper positioning groove (105) are positioned and connected via a third positioning block (4), and the fourth lower positioning groove (506) and the fourth upper positioning groove (106) are positioned and connected via a fourth positioning block (6).

4. The rapid assembly structure for a hydrogen fuel cell according to claim 3, characterized in that: The first upper positioning groove (103) and the fourth upper positioning groove (106) are arranged diagonally and have the same structure, and the second upper positioning groove (104) and the third upper positioning groove (105) are arranged diagonally and have the same structure; The first lower positioning groove (503) and the fourth lower positioning groove (506) are arranged diagonally and have the same structure, and the second lower positioning groove (504) and the third lower positioning groove (505) are arranged diagonally and have the same structure; The second positioning block (3) and the third positioning block (4) have the same structure, and the first positioning block (2) and the fourth positioning block (6) have the same structure.

5. The rapid assembly structure for a hydrogen fuel cell according to claim 3 or 4, characterized in that: The upper edges of the first positioning block (2), the second positioning block (3), the third positioning block (4) and the fourth positioning block (6) are respectively chamfered.

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