Fuel cell stack device

Abstract

The present invention belongs to the technical field of battery stacking, and specifically is a fuel cell stacking device, including a pressurizing device, a cover component is provided at the bottom of the pressurizing device, a stacked battery is provided inside the cover component, a sealing component is symmetrically provided on the front and rear sides of the cover component, and the cover component includes a pressure cover, a partitioning slot is evenly provided in the middle of the inner wall of the pressure cover, and a guide component is provided inside the partitioning slot. The device pressurizes and fixes the stacked battery by the pressurizing device, and then inserts a tightening belt and reinforces the tightening belt to bundle the stacked battery together, and then releases the pressure of the pressurizing device, thereby ensuring that the tightening belt will not cause uneven force on the battery stack and cause misalignment and deflection during the process of bundling the stacked battery, thereby ensuring the quality of the finished stacked battery.

Description

Technical Field

[0001] The invention belongs to the technical field of battery stacking, in particular to a fuel cell stacking device. Background Art

[0002] A fuel cell is a device that converts the chemical energy of reactants into electrical energy. It has the characteristics of high power generation efficiency, low environmental pollution, high specific energy, and high reliability. A fuel cell stack is composed of core components of the stack, such as end plates, insulating plates, current collectors, bipolar plates, and membrane electrodes, stacked one by one.

[0003] The Chinese invention patent with publication number CN114695936B discloses a fuel cell stacking device, which relates to the technical field of fuel cell electrode plate stacking, including a box; a transposition component is rotatably arranged on the box for converting the orientation of each electrode plate, the transposition component includes a transposition table rotatably mounted on the box for placing the electrode plate, and a torsion spring for providing torque is arranged between the transposition table and the box; adsorption transfer components are movably arranged on both sides of the box for transferring and assembling the electrode plate on the transposition table, and an assembly table is movably arranged on the box for assembling the electrode plate, and the adsorption transfer component The electrode plates are transferred to the assembly table and assembled; since fuel cells need to be stacked in the production process, the efficiency of stacking by manual operation is very low, so a special stacking machine is needed to stack the fuel cells. Since the battery stacks are compressed and pressed together by straps, when the straps are installed, the tightening force is not stable enough, which will cause uneven force on the battery stacks, resulting in misalignment and deflection during the strapping process, which not only affects the quality of the fuel cell, but also causes safety hazards to the battery, so improvements are needed. Summary of the invention

[0004] In view of the problem that battery stacks are unstable during bundling, the technical solution adopted by the present invention is: a fuel cell stacking device, including a pressurizing device, a cover component is arranged at the bottom of the pressurizing device, stacked batteries are arranged inside the cover component, and sealing components are symmetrically arranged on the front and rear sides of the cover component;

[0005] The closing cover component comprises a pressure cover, a partition slot is evenly arranged in the middle of the inner wall of the pressure cover, a guide component is arranged inside the partition slot, a recovery round shell is symmetrically arranged on the front and rear sides of the partition slot, a sliding groove is arranged on the side of the inner cavity of the recovery round shell close to the partition slot, side receiving grooves are symmetrically arranged on both sides of the inner cavity of the pressure cover, and a side pressure component is arranged inside the side receiving groove;

[0006] The guiding component includes a single-sided push box, a control push cylinder is fixedly connected to the left side of the outer surface of the single-sided push box, a built-in through pipe is symmetrically fixed at the exhaust port of the control push cylinder, the outer surface of the built-in through pipe is slidably connected to an external slide cylinder, one side of the outer surface of the external slide cylinder is fixedly connected to a horizontal connecting plate, and the end of the horizontal connecting plate away from the external slide cylinder is fixedly connected to a double-axis rotating cylinder, the output shafts on both sides of the double-axis rotating cylinder are fixedly connected to a guiding rotating shaft, and the control push cylinder drives the external slide cylinder to slide directionally along the outer surface of the built-in through pipe by controlling the pressure of the hollow built-in through pipe, thereby achieving the effect of pushing the horizontal connecting plate sideways.

[0007] Further, the outer surface of the single-sided push box is fixedly connected to the inner wall of the partition slot, the outer surface of the partition slot is fixedly connected to the inner wall of the pressure cover, the outer surface of the external slide is slidably connected to the inner wall of the single-sided push box through the storage slot, and the outer surface of the horizontal connecting plate is slidably connected to the inner wall of the recycling round shell through the sliding groove. The outer surface of the guide shaft is rollingly connected with a tightening belt, and the front and rear ends of the tightening belt extend to the outside of the pressure cover, the outer surface of the horizontal connecting plate is slidably connected to the inner wall of the single-sided push box through the storage slot, and the outer surface of the stacked battery and the outer surface of the partition slot are pressed against each other. The number of the pressure covers is two, the number of the partition slots is ten, the outer surface of the guide shaft is plugged into the inner wall of the recycling round shell, and the outer surface of the guide shaft is evenly provided with friction grooves, the outer surface of the built-in through pipe is fixedly connected to the inner cavity of the single-sided push box, and the guide shaft drives the tightening belt through the friction grooves on the outer surface, so that the tightening belt can be placed on the outer surface of the stacked battery.

[0008] Furthermore, the sealing tape component includes a drawstring box, a bent connecting plate is evenly fixed on the outer surface of the drawstring box at one end away from the tightening transfer tape, the bottom end of the bent connecting plate is rotatably connected to a threaded rotating shaft rod, and the end of the threaded rotating shaft rod away from the bending connecting plate is threadedly connected to a mid-position transfer box. The drawstring box can not only tighten the tightening transfer tape inserted inside, but also cut off the excess end of the tightening transfer tape, and weld the ends of the tightening transfer tape on the upper and lower sides together by welding, so as to realize the bundling of stacked batteries.

[0009] Furthermore, there are two pull-strap boxes, the outer surface of the mid-position transfer box is fixedly connected to the bottom of the lower pressure cover through a guide shell, the bottom of the outer surface of the bent connecting plate is slidably connected to the outer surface of the lower pressure cover through a guide shell, and both ends of the tightening transfer belt extend to the interior of the pull-strap box.

[0010] Furthermore, the side pressure component includes a pressure gauge, and a compression connecting tube is evenly arranged on the lower surface of the pressure gauge. The bottom end of the compression connecting tube is fixedly connected to a sliding pressure plate, and a cutting groove adapted to the sliding of the side accommodating groove is opened in the middle of the sliding pressure plate to ensure that the sliding pressure plate will not tilt unilaterally during the vertical sliding process. Conductive rods are evenly arranged on the side of the inner cavity of the sliding pressure plate away from the compression connecting tube, and the top of the conductive rod is fixedly connected to a current plate.

[0011] Furthermore, the number of the side pressure components is two, the outer surface of the pressure gauge is fixedly connected to the top of the inner wall of the pressure cover through the side receiving groove, the outer surface of the sliding pressure plate is slidably connected to the inner wall of the side receiving groove, and the lower surface of the sliding pressure plate is mutually pressed with the outer surface of the stacked battery through the conductive rod. The outer surface of the current plate is fixedly connected to the upper surface of the sliding pressure plate, the top end of the conductive rod extends to the inside of the current plate, and the outer surface of the conductive rod is fixedly connected to the inner cavity of the sliding pressure plate through the through hole.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The device uses a pressurizing device to pressurize and fix the stacked batteries. Under the condition of ensuring the stability of the stacked batteries, the stacked batteries are bundled together by inserting and reinforcing the tightening belts, and then the pressure of the pressurizing device is released, thereby ensuring that the battery stacks will not be misaligned or skewed due to uneven force on the tightening belts during the process of bundling the stacked batteries, thereby ensuring the quality of the finished stacked batteries.

[0014] 2. When the pressure device applies extrusion pressure, the tightening belt needs to pass through the pressure cover from the inside in order to bundle the outer surface of the stacked batteries. However, if the stacked batteries are directly inserted into the tightening belt, if the battery leaks, it may cause electric shock to the operator, and it cannot be guaranteed that the softer tightening belt can straightly cross the notches on the front and back sides of the pressure cover. Therefore, a guiding component is provided inside the pressure cover, and its guiding shaft can slide out from the inside of the recovery shell at any time to ensure that the tightening belt can fit the horizontal connecting plate and the guiding shaft and straightly pass through the pressure cover. When bundling, the guiding shaft and the horizontal connecting plate can be recovered into the single-sided push box, which will not hinder the tightening belt from bundling the stacked batteries.

[0015] 3. The device shrinks the tightening belts on the upper and lower sides through the pull-belt box, so that the tightening belts can be close to the stacked batteries, achieving the effect of bundling the stacked batteries, and the pull-belt box can cut off and recycle the excess tightening belts. Since the traction of the front and rear pull-belt boxes is controlled by the same middle transfer box at the bottom, it ensures that the welding points of the front and rear tightening belts can maintain a symmetrical state. The combined tightening belts are more evenly stressed, avoiding the problem of uneven stress at the welding points and easy disconnection.

[0016] 4. In the process of sliding the pressure plate to squeeze the stacked batteries, the bottom end of the conductive rod is always in contact with the outer surface of the stacked batteries. Therefore, when the stacked batteries have leakage problems due to squeezing, the current can flow into the current plate through the conductive rod, and then the leakage of the stacked batteries is fed back based on the signal received by the current plate, so as to deal with the leakage problem of the stacked batteries in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention;

[0018] Figure 2 is a cross-sectional view of the cover closing component of the present invention;

[0019] Figure 3 is a cross-sectional view of the pressure cover of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the guide component after the external slide cylinder of the present invention is pushed out;

[0021] Figure 5 It is a schematic structural diagram of the guiding component after the external slide tube is retracted according to the present invention;

[0022] Figure 6 It is a structural schematic diagram of the sealing tape component of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the side pressure component of the present invention.

[0024] In the figure: 1. Pressurizing equipment; 2. Cover closing component; 3. Stacked batteries; 4. Sealing component; 21. Pressure cover; 22. Partition slot; 23. Recycling round shell; 24. Sliding slot; 25. Side receiving slot; 26. Tightening belt; 6. Guide component; 61. Single-sided push box; 62. Control push cylinder; 63. Internal through pipe; 64. External slide cylinder; 65. Horizontal connecting plate; 66. Double-axis rotating cylinder; 67. Guide rotating shaft; 68. Storage slot; 41. Pulling belt box; 42. Bending connecting plate; 43. Threaded rotating shaft rod; 44. Mid-position rotating box; 5. Side pressure component; 51. Pressure gauge; 52. Compression connecting cylinder; 53. Sliding pressure plate; 54. Conductive rod; 55. Current plate. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0026] Example 1, please refer to Figure 1-Figure 6 The present invention provides a technical solution: a fuel cell stack device, comprising a pressurizing device 1, a cover component 2 is arranged at the bottom of the pressurizing device 1, a stacked battery 3 is arranged inside the cover component 2, and sealing components 4 are symmetrically arranged on the front and rear sides of the cover component 2;

[0027] The cover component 2 comprises a pressure cover 21, the inner cavity of the pressure cover 21 is uniformly provided with notches reserved for the tightening transfer belt 26, the middle of the inner wall of the pressure cover 21 is uniformly provided with a separation slot 22, the interior of the separation slot 22 is provided with a guide component 6, the front and rear sides of the separation slot 22 are symmetrically provided with a recovery round shell 23, the side of the inner cavity of the recovery round shell 23 close to the separation slot 22 is provided with a sliding slot 24, the inner cavity of the pressure cover 21 is symmetrically provided with side receiving slots 25 on both sides, and the side receiving slots 25 are provided with a side pressure component 5;

[0028] The guiding component 6 includes a single-sided push box 61, and a control push cylinder 62 is fixedly connected to the left side of the outer surface of the single-sided push box 61, and a built-in through pipe 63 is symmetrically fixed at the exhaust port of the control push cylinder 62, and the outer surface of the built-in through pipe 63 is slidably connected to an external slide cylinder 64, and one side of the outer surface of the external slide cylinder 64 is fixedly connected to a horizontal connecting plate 65, and the end of the horizontal connecting plate 65 away from the external slide cylinder 64 is fixedly connected to a double-axis rotating cylinder 66, and the output shafts on both sides of the double-axis rotating cylinder 66 are fixedly connected to a guiding rotating shaft 67, and the control push cylinder 62 drives the external slide cylinder 64 to slide along the outer surface of the built-in through pipe 63 by controlling the pressure of the hollow built-in through pipe 63, thereby achieving the effect of pushing the horizontal connecting plate 65 sideways.

[0029] The outer surface of the single-side push box 61 is fixedly connected to the inner wall of the partition slot 22, the outer surface of the partition slot 22 is fixedly connected to the inner wall of the pressure cover 21, the outer surface of the external slide 64 is slidably connected to the inner wall of the single-side push box 61 through the storage slot 68, and the outer surface of the horizontal connecting plate 65 is slidably connected to the inner wall of the recovery round shell 23 through the sliding groove 24. The outer surface of the guide shaft 67 is rollingly connected with the tightening belt 26, and the front and rear ends of the tightening belt 26 extend to the outside of the pressure cover 21, the outer surface of the horizontal connecting plate 65 is slidably connected to the inner wall of the single-side push box 61 through the storage slot 68, and the outer surface of the stacked battery 3 and the outer surface of the partition slot 22 are pressed against each other. There are two pressure covers 21 and ten partition slots 22. The outer surface of the guide shaft 67 is plugged into the inner wall of the recovery shell 23, and the outer surface of the guide shaft 67 is evenly provided with friction grooves. The outer surface of the built-in through tube 63 is fixedly connected to the inner cavity of the single-sided push box 61. The guide shaft 67 drives the tightening belt 26 through the friction grooves on the outer surface, so that the tightening belt 26 can be placed on the outer surface of the stacked battery 3.

[0030] The sealing tape component 4 includes a drawstring box 41, and a bending connecting plate 42 is evenly fixed on the outer surface of the drawstring box 41 at one end away from the tightening transfer tape 26. The bottom end of the bending connecting plate 42 is rotatably connected to a threaded rotating shaft rod 43, and the end of the threaded rotating shaft rod 43 away from the bending connecting plate 42 is threadedly connected to a mid-position transfer box 44. The drawstring box 41 can not only tighten the tightening transfer tape 26 inserted inside, but also cut off the excess ends of the tightening transfer tape 26, and weld the ends of the tightening transfer tape 26 on the upper and lower sides together by welding, so as to realize the bundling of the stacked batteries 3.

[0031] There are two pull-strap boxes 41, the outer surface of the middle transfer box 44 is fixedly connected to the bottom of the lower pressure cover 21 through a guide shell, the bottom of the outer surface of the bent connecting plate 42 is slidably connected to the outer surface of the lower pressure cover 21 through a guide shell, and both ends of the tightening transfer belt 26 extend to the interior of the pull-strap box 41, and the tightening transfer belts 26 on the upper and lower sides can pass through the pressure cover 21.

[0032] The battery cells are stacked layer by layer on the pressure cover 21 below, and the stacked battery 3 is corrected to avoid misalignment of the battery cells. After the stacking is completed, the top pressure cover 21 is buckled on the top of the stacked battery 3, and then the upper pressure cover 21 is pressed down by the pressurizing device 1 to compress the stacked battery 3.

[0033] After the stacked battery 3 is pressurized, the pressurizing device 1 continues to maintain the squeezing state, and then the guide components 6 inside the partition slots 22 of the upper and lower pressure covers 21 are activated, and the push cylinder 62 is controlled to pressurize through the hollow built-in through pipe 63, and the external slide cylinder 64 is pushed out from the inside of the storage groove 68. At this time, the horizontal connecting plate 65 drives the double-axis rotating cylinder 66 on both sides to move, and then the guide shafts 67 at both ends of the double-axis rotating cylinder 66 slide out from the original recycling round shell 23 and are inserted into the adjacent recycling round shell 23, as shown in FIG. Figure 1 As shown, the tightening belts 26 on the upper and lower sides are then passed around the outer surface of the guide shaft 67, and the tightening belts 26 are symmetrically placed on the guide shafts 67 on both sides.

[0034] The middle transfer box 44 at the bottom rotates the threaded shafts on both sides, and pulls the drawstring boxes 41 on both sides to the side close to the stacked battery 3 through the bending connecting plate 42, and then the upper and lower tightening transfer belts 26 are grouped together. The operator manually fits the ends of the tightening transfer belts 26 together and inserts them into the interior of the drawstring box 41, and then the drawstring boxes 41 on the front and rear sides simultaneously tighten the tightening transfer belts 26. At this time, in order to ensure that the tightening transfer belts 26 can tie up the stacked batteries 3, each guide component 6 retracts the external slide 64 into the storage groove 68, and then the frame is erected. The guide shaft 67 of the tightening belt 26 also shrinks into the interior of the recycling shell 23, and the tightening belt 26 between adjacent recycling shells 23 also fits the upper and lower sides of the outer surface of the stacked battery 3 under the action of the gradually tightening force, and the longer end of the tightening belt 26 is cut off, and the end parts of the tightening belt 26 on the upper and lower sides are welded together by heat welding to achieve the effect of bundling the stacked batteries 3 with the tightening belt 26. After the processing is completed, the pressurizing device 1 is released, the upper pressure cover 21 is opened, and the bundled stacked batteries 3 are taken out.

[0035] Example 2, please refer to Figure 1-Figure 7 The present invention provides a technical solution: on the basis of the first embodiment, the side pressure component 5 includes a pressure gauge 51, and a compression sleeve 52 is evenly arranged on the lower surface of the pressure gauge 51. The bottom end of the compression sleeve 52 is fixedly connected to a sliding pressure plate 53. The sliding pressure plates 53 on both sides directly squeeze the outer surface of the stacked battery 3. A notch adapted to the sliding of the side accommodating groove 25 is opened in the middle of the sliding pressure plate 53 to ensure that the sliding pressure plate 53 will not be unilaterally tilted during the vertical sliding process. Conductive rods 54 are evenly arranged on the side of the inner cavity of the sliding pressure plate 53 away from the compression sleeve 52, and the top of the conductive rod 54 is fixedly connected to a current plate 55.

[0036] There are two side pressure components 5, the outer surface of the pressure gauge 51 is fixedly connected to the top of the inner wall of the pressure cover 21 through the side receiving groove 25, the outer surface of the sliding plate 53 is slidably connected to the inner wall of the side receiving groove 25, and the lower surface of the sliding plate 53 is pressed against the outer surface of the stacked battery 3 through the conductive rod 54. The outer surface of the current plate 55 is fixedly connected to the upper surface of the sliding plate 53, the top end of the conductive rod 54 extends to the inside of the current plate 55, and the outer surface of the conductive rod 54 is fixedly connected to the inner cavity of the sliding plate 53 through the through hole.

[0037] When the pressure cover 21 is pressed down, the sliding pressure plates 53 on both sides replace the pressure cover 21 and directly perform the compression action with the stacked batteries 3. As the pressure device 1 continues to pressurize, the sliding pressure plates 53 also slide up relative to the side receiving grooves 25 under the reaction, thereby squeezing and shortening the compression sleeve 52. The pressure gauge 51 feeds back the squeezing force received by the stacked batteries 3, thereby avoiding the problem of excessive squeezing force exceeding the pressure-bearing capacity of the stacked batteries 3, resulting in the stacked batteries 3 being broken.

[0038] In the process of the sliding pressure plate 53 squeezing the stacked battery 3, the bottom end of the conductive rod 54 is always in contact with the outer surface of the stacked battery 3. Therefore, when the stacked battery 3 has a leakage problem due to the squeezing effect, the current can flow into the current plate 55 through the conductive rod 54, and then the leakage of the stacked battery 3 is fed back based on the signal received by the current plate 55, so as to deal with the leakage problem of the stacked battery 3 in time.

[0039] First, the upper pressure cover 21 is pressed down by the pressure device 1 to compress the stacked batteries 3, and then the guide component 6 inside the separation slot 22 is pushed out, and the guide tightening belt 26 is symmetrically placed on the guide shafts 67 on both sides. After the pull-belt boxes 41 on the front and rear sides simultaneously tighten the tightening belt 26, the internal guide component 6 is retracted to the initial position, and the tightening belt 26 between the adjacent recycling round shells 23 is also attached to the upper and lower sides of the outer surface of the stacked battery 3 under the action of the gradually tightening force, and then the tightening belt 26 is welded. After the processing is completed, the pressure device 1 is released, the upper pressure cover 21 is opened, and the bundled stacked batteries 3 are taken out.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fuel cell stack device, comprising a pressurizing device (1), a cover component (2) being arranged at the bottom of the pressurizing device (1), stacked cells (3) being arranged inside the cover component (2), and sealing components (4) being symmetrically arranged on both sides of the cover component (2), characterized in that: The closing cover component (2) comprises a pressure cover (21), a partition slot (22) is evenly arranged in the middle of the inner wall of the pressure cover (21), a guide component (6) is arranged inside the partition slot (22), a recovery round shell (23) is symmetrically arranged on the front and rear sides of the partition slot (22), a sliding groove (24) is provided on the side of the inner cavity of the recovery round shell (23) close to the partition slot (22), side receiving grooves (25) are symmetrically arranged on both sides of the inner cavity of the pressure cover (21), and a side pressure component (5) is arranged inside the side receiving groove (25); The guide component (6) comprises a single-sided push box (61), the left side of the outer surface of the single-sided push box (61) is fixedly connected to a control push cylinder (62), the exhaust port of the control push cylinder (62) is symmetrically fixed with an internal through pipe (63), the outer surface of the internal through pipe (63) is slidably connected to an external slide cylinder (64), one side of the outer surface of the external slide cylinder (64) is fixedly connected to a horizontal connecting plate (65), one end of the horizontal connecting plate (65) away from the external slide cylinder (64) is fixedly connected to a double-axis rotating cylinder (66), the output shafts on both sides of the double-axis rotating cylinder (66) are fixedly connected to a guide rotating shaft (67), the outer surface of the guide rotating shaft (67) is rollingly connected to a tightening belt (26), and the front and rear ends of the tightening belt (26) extend to the outside of the pressure cover (21), and the stacked batteries (3) are bundled together by reinforcing the tightening belt (26); The outer surface of the single-sided push box (61) is fixedly connected to the inner wall of the partition slot (22), the outer surface of the partition slot (22) is fixedly connected to the inner wall of the pressure cover (21), the outer surface of the external slide cylinder (64) is slidably connected to the inner wall of the single-sided push box (61) through the storage groove (68), and the outer surface of the horizontal connecting plate (65) is slidably connected to the inner wall of the recovery round shell (23) through the sliding groove (24); The outer surface of the horizontal connecting plate (65) is slidably connected to the inner wall of the single-sided push box (61) via the storage groove (68), and the outer surface of the stacked batteries (3) and the outer surface of the separation slot (22) are pressed against each other.

2. The fuel cell stack device according to claim 1, characterized in that: The number of the pressure-bearing covers (21) is two, the number of the dividing slots (22) is ten, the outer surface of the guide shaft (67) is plugged into the inner wall of the recovery round shell (23), and the outer surface of the guide shaft (67) is evenly provided with friction grooves, and the outer surface of the built-in through pipe (63) is fixedly connected to the inner cavity of the single-sided push box (61).

3. The fuel cell stack device according to claim 1, characterized in that: The tape sealing component (4) comprises a tape draw box (41), and a bending connecting plate (42) is evenly fixed to the end of the outer surface of the tape draw box (41) away from the tightening transfer belt (26), and the bottom end of the bending connecting plate (42) is rotatably connected to a threaded rotating shaft rod (43), and the end of the threaded rotating shaft rod (43) away from the bending connecting plate (42) is threadedly connected to a mid-position transfer box (44).

4. The fuel cell stack device according to claim 3, characterized in that: There are two drawstring boxes (41), the outer surface of the middle transfer box (44) is fixedly connected to the bottom of the lower pressure cover (21) via a guide shell, the bottom of the outer surface of the bent connecting plate (42) is slidably connected to the outer surface of the lower pressure cover (21) via a guide shell, and both ends of the tightening transfer belt (26) extend to the interior of the drawstring box (41).

5. The fuel cell stack device according to claim 1, characterized in that: The side pressure component (5) comprises a pressure gauge (51), a compression tube (52) is evenly arranged on the lower surface of the pressure gauge (51), a sliding pressure plate (53) is fixedly connected to the bottom end of the compression tube (52), a conductive rod (54) is evenly arranged on the side of the inner cavity of the sliding pressure plate (53) away from the compression tube (52), and a current plate (55) is fixedly connected to the top end of the conductive rod (54).

6. The fuel cell stack device according to claim 5, characterized in that: The number of the side pressure components (5) is two, the outer surface of the pressure gauge (51) is fixedly connected to the top of the inner wall of the pressure cover (21) via the side receiving groove (25), the outer surface of the sliding pressure plate (53) is slidably connected to the inner wall of the side receiving groove (25), and the lower surface of the sliding pressure plate (53) is mutually compressed with the outer surface of the stacked battery (3) via the conductive rod (54).

7. The fuel cell stack device according to claim 6, characterized in that: The outer surface of the current plate (55) is fixedly connected to the upper surface of the sliding pressure plate (53), the top end of the conductive rod (54) extends into the interior of the current plate (55), and the outer surface of the conductive rod (54) is fixedly connected to the inner cavity of the sliding pressure plate (53) through the through hole.

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