A hydrogen fuel cell stack packaging structure

Abstract

A hydrogen fuel cell stack packaging structure belongs to the field of hydrogen fuel cell packaging technology. It is designed to solve the problem that the battery cell cannot be effectively supported and fixed inside the packaging shell and the protection performance of the battery cell is also poor. The present invention drives the positive and negative screws to rotate through the transmission of the first transmission mechanism and the second transmission mechanism. When the positive and negative screws rotate, the upper screw seat and the lower screw seat are driven to approach each other, thereby reducing the angle between the two sets of corresponding rotating plates. At this time, the extrusion plate approaches the battery cell under the action of the rotating plate and the fixing part until it is tightly attached to the extrusion plate on the outer wall of the battery cell. Subsequently, the bolt is rotated externally, and the bolt drives the hexagonal nut and the transmission rod to rotate, so that the threaded seat and the fixing rod move, thereby causing the push block to move and squeeze the first wedge block, and finally the sliding plate is close to the side of the second fixed plate. Under the action of the second wedge block squeezing the extrusion groove, the installation of the battery cell is made tighter and more stable, thereby meeting the requirements of vibration and impact.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell packaging, and in particular to a hydrogen fuel cell stack packaging structure. Background Art

[0002] A hydrogen fuel cell is a power generation device that converts the chemical energy of hydrogen and oxygen directly into electrical energy. Its basic principle is the reverse reaction of water electrolysis, supplying hydrogen to the anode and oxygen to the cathode. Hydrogen diffuses outward from the anode, reacts with the electrolyte, and releases electrons that travel through an external load to the cathode.

[0003] When the battery stack is in working condition, the packaging box needs to withstand a large force. In addition to having good strength, the packaging box also needs to have certain protection capabilities. Traditional battery stack packaging boxes have poor assembly performance and cannot guide the battery cells. The interior of the packaging shell cannot effectively support and fix the battery cells, and the protection performance of the battery cells is also poor.

[0004] In order to solve the above problems, a hydrogen fuel cell stack packaging structure is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydrogen fuel cell packaging structure, which solves the problems in the background technology that the traditional fuel cell packaging box has poor assembly performance, cannot guide the battery cells, and cannot effectively support and fix the battery cells inside the packaging shell, and has poor protection performance for the battery cells.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydrogen fuel cell stack packaging structure, comprising a packaging box, a battery cell and a fixing assembly, wherein an inlet for the battery cell to pass through is provided on one side of the packaging box, and a guide rod is provided on the inner wall of one side of the packaging box, the guide rod extends along one side of the battery cell and passes through the battery cell, and the guide rod is used for guiding the battery cell during installation; the fixing assembly is arranged between the packaging box and the battery cell, and the fixing assembly comprises a first fixing plate, an extrusion plate and a second fixing plate, the first fixing plate is fixedly mounted on the inner wall of the packaging box, the second fixing plate is fixedly mounted on the outer wall of the battery cell, and the extrusion plate is movably arranged on the side of the first fixing plate close to the second fixing plate.

[0007] Furthermore, the packaging box is a component made of metal material, and the guide rod and the packaging box are an integrated structure.

[0008] Furthermore, two groups of the first fixing plate, the extrusion plate and the second fixing plate are provided, and the two groups of the first fixing plate, the extrusion plate and the second fixing plate are respectively located on both sides of the battery core.

[0009] Furthermore, the first fixed plate is connected to the inner wall of the packaging box through threads, and a sliding groove for sliding the extrusion plate is provided on the side of the first fixed plate close to the second transmission mechanism. The sliding groove opens toward one side of the second fixed plate, and a vertical first sliding cavity is provided inside the first fixed plate.

[0010] Furthermore, a first transmission mechanism is provided at the bottom of the packaging box, and a second transmission mechanism is provided at both ends of the first transmission mechanism on both sides of the interior of the packaging box. A pressing and fixing mechanism is provided between the first fixing plate and the extrusion plate. The pressing and fixing mechanism includes an upper screw seat and a lower screw seat slidingly connected to the inside of the first sliding cavity. The upper screw seat and the lower screw seat are symmetrically distributed up and down. A threaded positive and negative screw rod is provided between the upper screw seat and the lower screw seat, and the second transmission mechanism is connected to the positive and negative screw rod.

[0011] Furthermore, the upper screw seat and the lower screw seat are fixedly connected to a rotating frame on one side close to the second fixed plate, and the two groups of rotating frames are rotatably connected to a rotating plate, the extrusion plate is slidably connected in the sliding groove, and the extrusion plate is fixedly connected to a fixing part on one side close to the first fixed plate, and the front and rear of the fixing part are rotatably connected to a rotating shaft, and the two groups of rotating shafts are respectively fixedly connected to the other end of the two groups of rotating plates.

[0012] Furthermore, a rotation groove and a second sliding cavity are provided in the middle of the first fixed plate. The rotation groove passes through the first fixed plate from front to back, and the second sliding cavity is communicated with the middle of the rotation groove.

[0013] Furthermore, a third sliding cavity is provided in the middle of the extrusion plate, and a through groove and a preset groove connected to the third sliding cavity are respectively provided on both sides of the interior of the extrusion plate, and the through groove is open toward one side of the second fixed plate, and the preset groove is open toward one side of the first fixed plate. An extrusion groove is provided on the side of the second fixed plate close to the first fixed plate, and the cross-sectional shape of the extrusion groove is a right triangle.

[0014] Furthermore, the fixing assembly also includes an inclined wedge fixing mechanism, which includes a transmission rod rotatably connected to the inside of the rotating groove, one end of the transmission rod is fixedly connected to a hexagonal nut, a bolt is rotatably connected to the packaging box, and one end of the bolt is docked with the hexagonal nut, and the other end of the bolt extends to the outside of the packaging box, and an external thread is provided in the middle of the transmission rod. The inclined wedge fixing mechanism also includes a threaded seat slidably connected to the second sliding cavity, and the threaded seat is threadedly connected to the transmission rod through an external thread, and a fixing rod is fixedly connected to one side of the threaded seat.

[0015] Furthermore, the inclined wedge fixing mechanism also includes a push block slidably connected to the inside of the third sliding cavity, one side of the push block is fixedly connected to a sleeve, and the sleeve passes through a preset groove and is slidably mounted on the fixed rod, and a sliding plate is slidably connected to the inside of the groove, and the two sides of the sliding plate are respectively fixedly connected to the first wedge block and the second wedge block, and one side of the first wedge block corresponds to the push block, and one side of the second wedge block corresponds to the extrusion groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a hydrogen fuel cell stack packaging structure, which pushes the battery cell into the interior of the packaging box through an inlet and a guide rod, and then rotates the rotating rod on the outside, and drives the positive and negative screws to rotate through the transmission of the first transmission mechanism and the second transmission mechanism. When the positive and negative screws rotate, they drive the upper screw seat and the lower screw seat to approach each other, thereby reducing the angle between the two sets of corresponding rotating plates. At this time, the extrusion plate approaches the battery cell under the action of the rotating plate and the fixing part until it is tightly attached to the extrusion plate on the outer wall of the battery cell. Subsequently, by rotating the bolt on the outside, the bolt drives the hexagonal nut and the transmission rod to rotate, so that the threaded seat and the fixing rod move, and then the push block moves and squeezes the first wedge block, and finally the sliding plate approaches the side of the second fixed plate. Under the action of the second wedge block squeezing the extrusion groove, the installation of the battery cell is more tight and stable, thereby meeting the requirements of vibration and impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0019] Figure 2 This is a disassembled diagram of the packaging box and battery cell structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0021] Figure 4 This is a disassembled diagram of the fixing assembly structure of the present invention;

[0022] Figure 5 An exploded view of the first transmission mechanism and the second transmission mechanism of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the first fixing plate, the extrusion plate, and the second fixing plate of the present invention;

[0024] Figure 7 This is a schematic structural diagram of the first fixing plate, the extrusion plate, and the second fixing plate of the present invention;

[0025] Figure 8 It is a schematic structural diagram of the pressing fixing mechanism and the inclined wedge fixing mechanism of the present invention;

[0026] Figure 9 This is an exploded view of the pressing and fixing mechanism structure of the present invention.

[0027] In the figure: 1. Package box; 11. Inlet; 12. Guide rod; 2. Battery cell; 3. Fixing assembly; 31. First transmission mechanism; 311. Housing; 312. Rotating rod; 313. First transmission shaft; 314. Second transmission shaft; 32. Second transmission mechanism; 33. First fixing plate; 331. Sliding groove; 332. First sliding cavity; 333. Rotating groove; 334. Second sliding cavity; 34. Extrusion plate; 341. Third sliding cavity; 342. Through groove; 343. Preset groove; 35. Second fixing plate; 351. Extrusion groove; 36. Press-fixing mechanism; 361. Positive and negative threaded screws; 362. Upper screw seat; 363. Lower screw seat; 364. Rotating frame; 365. Rotating plate; 366. Fixing piece; 367. Rotating shaft; 37. Angle wedge fixing mechanism; 371. Hexagon socket nut; 372. Transmission rod; 373. External thread; 374. Threaded seat; 375. Fixing rod; 376. Sleeve; 377. Push block; 378. Sliding plate; 3781. First wedge block; 3782. Second wedge block; 38. Bolt. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to solve the technical problems that the traditional battery stack packaging box has poor assembly performance, cannot guide the battery cells, and cannot effectively support and fix the battery cells inside the packaging shell, and has poor protection performance for the battery cells, such as Figures 1-9 As shown, the following preferred technical solutions are provided:

[0030] A hydrogen fuel cell stack packaging structure includes a packaging box 1, a battery cell 2 and a fixing assembly 3. An inlet 11 for the battery cell 2 to pass through is provided on one side of the packaging box 1. A guide rod 12 is provided on the inner wall of one side of the packaging box 1. The guide rod 12 extends along one side of the battery cell 2 and passes through the battery cell 2. The guide rod 12 is used to guide the battery cell 2 during installation. The fixing assembly 3 is arranged between the packaging box 1 and the battery cell 2. The fixing assembly 3 includes a first fixing plate 33, an extrusion plate 34 and a second fixing plate 35. The first fixing plate 33 is fixedly mounted on the inner wall of the packaging box 1, the second fixing plate 35 is fixedly mounted on the outer wall of the battery cell 2, and the extrusion plate 34 is movably arranged on the side of the first fixing plate 33 close to the second fixing plate 35.

[0031] The packaging box 1 is a component made of metal material, and the guide rod 12 and the packaging box 1 are an integrated structure.

[0032] Two groups of the first fixing plates 33 , the pressing plates 34 and the second fixing plates 35 are provided, and the two groups of the first fixing plates 33 , the pressing plates 34 and the second fixing plates 35 are respectively located on both sides of the battery core 2 .

[0033] The first fixing plate 33 is connected to the inner wall of the packaging box 1 by threads. A sliding groove 331 for sliding the extrusion plate 34 is provided on the side of the first fixing plate 33 close to the second transmission mechanism 32. The sliding groove 331 is open to one side of the second fixing plate 35. A vertical first sliding cavity 332 is provided inside the first fixing plate 33.

[0034] A first transmission mechanism 31 is provided at the bottom of the packaging box 1, and a second transmission mechanism 32 is provided at both ends of the first transmission mechanism 31 on both sides of the interior of the packaging box 1. The first transmission mechanism 31 and the second transmission mechanism 32 are components made of the same structure. The first transmission mechanism 31 includes a shell 311 and a rotating rod 312 rotatably connected to the middle of the bottom of the shell 311. The bottom of the rotating rod 312 extends to the outside of the packaging box 1. The first transmission mechanism 31 also includes a first transmission shaft 313 rotatably connected to both sides of the interior of the shell 311. The two groups of first transmission shafts 313 are engaged with the rotating rod 312 through helical gears. The first transmission mechanism 31 also includes a second transmission shaft 314 rotatably connected to the upper sides of the shell 311. The two groups of second transmission shafts 314 are engaged with the two groups of first transmission shafts 313 are connected by helical gear meshing, and the second transmission mechanism 32 is provided with two groups. The two groups of second transmission mechanisms 32 are respectively located above the first transmission mechanism 31, and the second transmission shaft 314 is transmission-connected to the middle and lower part of the second transmission mechanism 32. A pressing and fixing mechanism 36 is provided between the first fixed plate 33 and the extrusion plate 34. The pressing and fixing mechanism 36 includes an upper screw seat 362 and a lower screw seat 363 slidingly connected to the inside of the first sliding cavity 332. The upper screw seat 362 and the lower screw seat 363 are symmetrically distributed up and down. A threaded positive and negative screw rod 361 is provided between the upper screw seat 362 and the lower screw seat 363. The top of the second transmission mechanism 32 is transmission-connected to the positive and negative screw rod 361, and the thread winding directions of the upper and lower outer walls of the positive and negative screw rod 361 are opposite.

[0035] The upper screw seat 362 and the lower screw seat 363 are fixedly connected to the side of the second fixed plate 35 with a rotating frame 364, and the rotating frames 364 of the two groups are rotatably connected to the rotating plates 365. The extrusion plate 34 is slidably connected in the sliding groove 331, and the side of the extrusion plate 34 close to the first fixed plate 33 is fixedly connected to the fixing member 366. The front and rear of the fixing member 366 are rotatably connected to the rotating shaft 367, and the two groups of rotating shafts 367 are respectively fixedly connected to the other end of the rotating plates 365 of the two groups. The battery cell 2 enters the packaging box 1 through the inlet 11 along the guide rod 12 After that, the first transmission mechanism 31 is rotated outside the packaging box 1, and then the forward and reverse screw rods 361 are rotated through the second transmission mechanism 32. When the forward and reverse screw rods 361 rotate, the upper screw rod seat 362 and the lower screw rod seat 363 move close to each other, and the two groups of rotating plates 365 are squeezed so that the fixing parts 366 move toward the direction of the second fixed plate 35. The fixing parts 366 make the extrusion plate 34 move toward one side of the second fixed plate 35 and stick to it. The second fixed plates 35 located on both sides of the battery cell 2 are squeezed by the extrusion plate 34 at the same time to achieve fixation.

[0036] A rotation groove 333 and a second sliding cavity 334 are further provided in the middle of the first fixed plate 33 . The rotation groove 333 penetrates the first fixed plate 33 from front to back, and the second sliding cavity 334 is communicated with the middle of the rotation groove 333 .

[0037] A third sliding cavity 341 is provided in the middle of the extrusion plate 34, and a through groove 342 and a preset groove 343 connected to the third sliding cavity 341 are respectively provided on both sides of the interior of the extrusion plate 34. The through groove 342 is open toward one side of the second fixed plate 35, and the preset groove 343 is open toward one side of the first fixed plate 33. An extrusion groove 351 is provided on the side of the second fixed plate 35 close to the first fixed plate 33, and the cross-sectional shape of the extrusion groove 351 is a right triangle.

[0038] The fixing assembly 3 also includes a wedge fixing mechanism 37, which includes a transmission rod 372 rotatably connected to the inside of the rotating groove 333, one end of the transmission rod 372 is fixedly connected to a hexagonal nut 371, a bolt 38 is rotatably connected to the packaging box 1, and one end of the bolt 38 is docked with the hexagonal nut 371, and the other end of the bolt 38 extends to the outside of the packaging box 1, an external thread 373 is provided in the middle of the transmission rod 372, and the wedge fixing mechanism 37 also includes a threaded seat 374 slidably connected to the second sliding cavity 334, and the threaded seat 374 is threadedly connected to the transmission rod 372 through the external thread 373, and a fixing rod 375 is fixedly connected to one side of the threaded seat 374.

[0039] The inclined wedge fixing mechanism 37 also includes a push block 377 slidably connected to the inside of the third sliding cavity 341, and a sleeve 376 is fixedly connected to one side of the push block 377, and the sleeve 376 passes through the preset groove 343 and is slidably sleeved on the fixing rod 375, and a sliding plate 378 is slidably connected to the inside of the groove 342. The two sides of the sliding plate 378 are respectively fixedly connected to a first wedge block 3781 and a second wedge block 3782, and one side of the first wedge block 3781 corresponds to the push block 377, and one side of the second wedge block 3782 corresponds to the extrusion groove 351. By rotating the outside of the packaging box 1 The bolt 38 is moved, and the bolt 38 drives the hexagonal nut 371 and the transmission rod 372 to rotate, and then the push block 377 moves in the direction away from the hexagonal nut 371 through the threaded seat 374, the fixing rod 375 and the sleeve 376. The push block 377 squeezes the first wedge block 3781 to make the sliding plate 378 move and squeeze toward one side of the extrusion plate 34 in the through groove 342. The second wedge block 3782 squeezes the extrusion groove 351 to cause an extrusion force on the second fixed plate 35, and finally makes the battery cell 2 have a tendency to move toward the inside of the packaging box 1, thereby achieving the fixation of the battery cell 2.

[0040] Specifically, when packaging, the battery cell 2 is pushed into the interior of the packaging box 1 through the inlet 11 and the guide rod 12, and then the rotating rod 312 is rotated on the outside, and the positive and negative screw rods 361 are driven to rotate through the transmission of the first transmission mechanism 31 and the second transmission mechanism 32. When the positive and negative screw rods 361 rotate, the upper screw rod seat 362 and the lower screw rod seat 363 are driven to approach each other, thereby reducing the angle between the two sets of corresponding rotating plates 365. At this time, the extrusion plate 34 is under the action of the rotating plate 365 and the fixing member 366. Approach the battery cell 2 until it is tightly attached to the extrusion plate 34 on the outer wall of the battery cell 2. Then, by rotating the bolt 38 externally, the bolt 38 drives the hexagonal nut 371 and the transmission rod 372 to rotate, so that the threaded seat 374 and the fixing rod 375 move, and then the push block 377 moves and squeezes the first wedge block 3781, and finally the sliding plate 378 approaches the side of the second fixed plate 35. Under the action of the second wedge block 3782 squeezing the extrusion groove 351, the installation of the battery cell 2 is made tighter and more stable, thereby meeting the requirements of vibration and impact.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hydrogen fuel cell stack packaging structure, comprising a packaging box (1), a battery cell (2) and a fixing assembly (3), characterized in that: An inlet (11) for the battery cell (2) to pass through is provided on one side of the packaging box (1), a guide rod (12) is provided on the inner wall of one side of the packaging box (1), the guide rod (12) extends along one side of the battery cell (2) and penetrates the battery cell (2), the guide rod (12) is used for guiding the battery cell (2) when installing, a fixing assembly (3) is provided between the packaging box (1) and the battery cell (2), the fixing assembly (3) includes a first fixing plate (33), an extrusion plate (34) and a second fixing plate (35), the first fixing plate (33) is fixedly installed on the inner wall of the packaging box (1), the second fixing plate (35) is fixedly installed on the outer wall of the battery cell (2), and the extrusion plate (34) is movably provided on a side of the first fixing plate (33) close to the second fixing plate (35); A sliding groove (331) for sliding the extrusion plate (34) is provided on one side of the first fixed plate (33) close to the second transmission mechanism (32), the sliding groove (331) is open toward one side of the second fixed plate (35), and a vertical first sliding cavity (332) is provided inside the first fixed plate (33); A first transmission mechanism (31) is provided at the bottom of the packaging box (1), and a second transmission mechanism (32) is provided at both ends of the first transmission mechanism (31) on both sides of the interior of the packaging box (1). A pressing and fixing mechanism (36) is provided between the first fixing plate (33) and the extrusion plate (34), and the pressing and fixing mechanism (36) includes an upper screw seat (362) and a lower screw seat (363) slidably connected inside the first sliding cavity (332), the upper screw seat (362) and the lower screw seat (363) are symmetrically distributed up and down, and a threaded positive and negative threaded screw (361) is provided between the upper screw seat (362) and the lower screw seat (363), and the second transmission mechanism (32) is connected to the positive and negative threaded screw (361); The upper screw seat (362) and the lower screw seat (363) are fixedly connected to a rotating frame (364) on one side close to the second fixed plate (35), and the rotating plates (365) are rotatably connected to the rotating frames (364) of the two groups. The extrusion plate (34) is slidably connected in the sliding groove (331), and the extrusion plate (34) is fixedly connected to a fixing member (366) on one side close to the first fixed plate (33). The front and rear sides of the fixing member (366) are rotatably connected to rotating shafts (367), and the two groups of rotating shafts (367) are respectively fixedly connected to the other ends of the two groups of rotating plates (365). A rotation groove (333) and a second sliding cavity (334) are further provided in the middle of the first fixed plate (33). The rotation groove (333) passes through the first fixed plate (33) from front to back, and the second sliding cavity (334) is communicated with the middle of the rotation groove (333). A third sliding cavity (341) is provided in the middle of the extrusion plate (34), and a through groove (342) and a preset groove (343) communicating with the third sliding cavity (341) are provided on both sides of the interior of the extrusion plate (34), respectively. The through groove (342) opens toward one side of the second fixed plate (35), and the preset groove (343) opens toward one side of the first fixed plate (33). An extrusion groove (351) is provided on one side of the second fixed plate (35) close to the first fixed plate (33), and the cross-sectional shape of the extrusion groove (351) is a right triangle. The fixing assembly (3) further includes an oblique wedge fixing mechanism (37), the oblique wedge fixing mechanism (37) including a transmission rod (372) rotatably connected to the inside of the rotating groove (333), one end of the transmission rod (372) being fixedly connected to a hexagonal nut (371), a bolt (38) being rotatably connected to the packaging box (1), one end of the bolt (38) being butted against the hexagonal nut (371), the other end of the bolt (38) extending to the outside of the packaging box (1), an external thread (373) being provided at the middle of the transmission rod (372), the oblique wedge fixing mechanism (37) further including a threaded seat (374) slidably connected to the second sliding cavity (334), the threaded seat (374) being threadedly connected to the transmission rod (372) via the external thread (373), and a fixing rod (375) being fixedly connected to one side of the threaded seat (374); The inclined wedge fixing mechanism (37) further includes a push block (377) slidably connected to the interior of the third sliding cavity (341), a sleeve (376) being fixedly connected to one side of the push block (377), and the sleeve (376) passing through the preset groove (343) and slidingly sleeved on the fixing rod (375), a sliding plate (378) being slidably connected to the interior of the groove (342), and a first wedge block (3781) and a second wedge block (3782) being fixedly connected to both sides of the sliding plate (378), respectively, and one side of the first wedge block (3781) corresponds to the push block (377), and one side of the second wedge block (3782) corresponds to the extrusion groove (351).

2. A hydrogen fuel cell stack packaging structure according to claim 1, characterized in that: The packaging box (1) is a component made of metal material, and the guide rod (12) and the packaging box (1) are an integrated structure.

3. The hydrogen fuel cell stack packaging structure according to claim 1, wherein: Two groups of the first fixing plate (33), the extrusion plate (34) and the second fixing plate (35) are provided, and the two groups of the first fixing plate (33), the extrusion plate (34) and the second fixing plate (35) are respectively located on both sides of the battery core (2).

4. A hydrogen fuel cell stack packaging structure according to claim 3, characterized in that: The first fixing plate (33) is connected to the inner wall of the packaging box (1) via threads.

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