Band-type fuel cell stack assembly device with tensioning function

Abstract

An embodiment of the present invention provides a band-type fuel cell stack assembly device with a tensioning function, the band-type fuel cell stack assembly device with a tensioning function includes a frame and at least two tensioning assemblies provided on the frame, the tensioning assembly includes a mounting seat, a first roller and a second roller, the first roller and the second roller are both provided on the mounting seat, the second roller has a standby position spaced apart from the first roller in the second direction and a working position opposite to and spaced apart from the first roller in the third direction, in the working position, the second roller is located in the accommodating groove, the first roller and the second roller are suitable for clamping the band, the band can be moved along the first direction for tensioning under the friction drive of the rotation of the first roller and / or the second roller. The band-type fuel cell stack assembly device with a tensioning function of the embodiment of the present invention has the advantage of being able to tension the band on the stack to fit the surface of the stack by at least two tensioning assemblies.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell assembly equipment, and in particular to a strap-type fuel cell stack assembly device with a tensioning function. Background Art

[0002] Fuel cell stacks are typically assembled using binding tape to make the stack more compact and distribute contact pressure more evenly between components. However, in related art, the binding tape becomes loose after welding, resulting in poor stack performance. Summary of the Invention

[0003] The present invention aims to address, at least to some extent, one of the technical problems in the related art. To this end, embodiments of the present invention provide a strap-type fuel cell stack assembly device with a tensioning function. This strap-type fuel cell stack assembly device with a tensioning function has the advantage of being able to tighten the straps on the fuel cell stack to fit the stack surface using at least two tensioning assemblies.

[0004] The strap-type fuel cell stack assembly device with a tensioning function according to an embodiment of the present invention includes a frame and at least two tensioning assemblies provided on the frame, wherein the frame is used to place the fuel cell stack and the straps used to bind the fuel cell stack, and the end surface of the fuel cell stack is provided with a receiving groove, and at least two tensioning assemblies are arranged at intervals along a first direction, and the tensioning assemblies include:

[0005] a mounting base connected to the frame;

[0006] a first roller, the first roller being disposed on the mounting seat and being rotatable relative to the mounting seat about a second direction, the second direction being orthogonal to the first direction;

[0007] The second roller is provided on the mounting seat, and the second roller can rotate about a second direction relative to the mounting seat, and the second roller can move along a second direction and a third direction relative to the mounting seat, and the third direction is orthogonal to the first direction and the second direction, so that the second roller has a standby position spaced apart from the first roller in the second direction and a working position opposite to and spaced apart from the first roller in the third direction, in the working position, the second roller is located in the accommodating groove, and the first roller and the second roller are suitable for clamping a strap, and the strap can be moved along the first direction for tensioning under the friction drive of the rotation of the first roller and / or the second roller.

[0008] The strap-type fuel cell stack assembly device with a tensioning function in an embodiment of the present invention is provided with at least two tensioning assemblies on the frame, and the tensioning assembly includes a first roller and a second roller. In the working position, the second roller is located in the receiving groove of the fuel cell stack, and the first roller and the second roller are suitable for clamping the strap. The strap can be moved in the first direction under the friction drive of the rotation of the first roller and / or the second roller. The two ends of the strap are driven to move relative to each other in the first direction by at least two tensioning assemblies to tension the strap. Since the second roller is located in the receiving groove, the strap is attached to the surface of the fuel cell stack after tensioning and will not be loose.

[0009] In some embodiments, there are at least two second rollers, and at least two second rollers are arranged at intervals in the second direction. In the working position, one of the second rollers is opposite to and spaced from a portion of the first roller in the third direction, and the other second roller is opposite to and spaced from another portion of the first roller in the third direction. In the standby position, the first roller is located between two adjacent second rollers in the second direction.

[0010] In some embodiments, the first roller includes a first wheel body and a second wheel body spaced apart in the second direction. In the working position, the first wheel body and one of the second rollers are opposite and spaced apart in the third direction, and the second wheel body and the other second roller are opposite and spaced apart in the third direction.

[0011] In some embodiments, the first roller is movable along a third direction relative to the mounting base.

[0012] In some embodiments, the tensioning assembly further includes a guide member, which is disposed on the frame and extends along the second direction, and the mounting seat is disposed on the guide member and is movable along the extension direction of the guide member.

[0013] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function further includes:

[0014] a support platform, the support platform being disposed on the frame, the surface of the support platform being provided with a plurality of first avoidance grooves extending along the first direction for the straps to pass through, the plurality of first avoidance grooves being arranged at intervals along the second direction, and the surface of the support platform being used for placing the fuel cell stack;

[0015] A pressure piece is provided on the frame and can move relative to the frame along the third direction to compress the battery stack. The surface of the pressure piece abutting the battery stack is provided with a plurality of second avoidance grooves for the passage of a strap and extending along the first direction. The plurality of second avoidance grooves are arranged at intervals along the second direction.

[0016] In some embodiments, the pressure member is provided with a cavity penetrating the pressure member along the third direction, and the cavity accommodates the tensioning assembly;

[0017] The device further comprises a welding piece, which is arranged on the frame and passes through the cavity. The welding piece can move relative to the frame along the third direction and the second direction to weld the overlapping straps between two adjacent tensioning assemblies.

[0018] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function also includes a bending component, which is movably arranged on the frame along the second direction and the third direction, so as to bend the two ends of the strap located on the support platform in the first direction upward.

[0019] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function further includes:

[0020] A stacking assembly, the stacking assembly being provided on the frame and being used to stack the battery stacks along the third direction;

[0021] A transfer assembly is provided on the frame and is used to transfer the battery stack located on the stacking assembly to the support platform.

[0022] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function also includes a distance measuring component, which includes a detection frame and a distance detector. The detection frame is installed on the frame and is adjacent to the support platform. The distance detector is installed on the detection frame and can move along the third direction relative to the detection frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 2 is a schematic structural diagram of a strap-type fuel cell stack assembly device with a tensioning function according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A front view of a strap-type fuel cell stack assembly device with a tensioning function;

[0025] Figure 3 yes Figure 1 Schematic diagram of the explosion of the CLP stack;

[0026] Figure 4 yes Figure 1 Schematic diagram of the structure of the tensioning assembly;

[0027] Figure 5 yes Figure 1Schematic diagram of the structure of the middle support platform, stacking assembly and transfer assembly;

[0028] Figure 6 yes Figure 1 Schematic diagram of the structure of the pressure member;

[0029] Figure 7 yes Figure 1 Schematic diagram of the structure of the middle stack component;

[0030] Figure 8 yes Figure 1 Schematic diagram of part of the structure of the middle bending component;

[0031] Figure 9 yes Figure 1 Schematic diagram of part of the structure of the middle bending component;

[0032] Figure 10 yes Figure 1 Schematic diagram of the structure of the welded parts.

[0033] Reference numerals:

[0034] 1. Frame; 101. Slide bar; 102. Driving member; 2. Tensioning assembly; 201. Mounting seat; 202. First roller; 203. Second roller; 204. Guide member; 205. First telescopic member; 206. Second telescopic member; 207. Third telescopic member; 3. Support platform; 301. First avoidance groove; 302. Detection medium inlet; 303. Detection medium outlet; 304. Interface; 4. Pressure member; 401. Second avoidance groove; 402. Cavity; 403. Pressing platform; 5. Welding member; 501. First vertical drive; 502. 1st horizontal drive; 6. Bending assembly; 601. Bending member; 602. Pressing member; 603. Second vertical drive member; 604. Second horizontal drive member; 605. Third vertical drive member; 606. Third horizontal drive member; 607. Fourth horizontal drive member; 7. Stacking assembly; 701. Stacking base; 702. Limiting frame; 703. Limiting boss; 8. Transfer assembly; 801. Fifth horizontal drive member; 802. Transfer fixture; 803. Transfer gripper; 804. Guide rail; 9. Distance measuring assembly; 901. Detection frame; 902. Distance detector;

[0035] 100. Fuel cell stack; 1001. Front end plate; 1002. Front insulating plate; 1003. Front current collecting plate; 1004. Collecting plate; 1005. Rear unipolar plate; 1006. Rear current collecting plate; 1007. Rear insulating plate; 1008. Compensating plate; 1009. Connector; 1010. Rear end plate; 200. Binding strap; 300. Receiving slot. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] Please refer to the following Figure 1 -Attached Figure 10 A strap-type fuel cell stack assembly device with a tensioning function according to an embodiment of the invention is described.

[0038] like Figures 1-10 As shown, the strap-type fuel cell stack assembly device with tensioning function according to the embodiment of the present invention comprises a frame 1 and at least two tensioning assemblies 2 provided on the frame 1. The frame 1 is used to place the fuel cell stack 100 and the strap 200 used to bind the fuel cell stack 100. The end surface of the fuel cell stack 100 is provided with a receiving groove 300. Specifically, as shown in FIG. Figure 1-Figure 3 As shown, the battery stack 100 is stacked vertically on the rack 1. Two accommodating slots 300 extending in the left-right direction are provided on the upper end surface of the battery stack 100. The two accommodating slots 300 are spaced apart and arranged parallel to each other in the front-to-back direction. It is understood that in other embodiments, the accommodating slots 300 may also be provided on the side end surface of the battery stack 100.

[0039] At least two tensioning assemblies 2 are arranged along a first direction (eg Figure 4 The tensioning assembly 2 includes a mounting seat 201, a first roller 202, and a second roller 203. The mounting seat 201 is connected to the frame 1. The first roller 202 is provided on the mounting seat 201, and the first roller 202 can rotate relative to the mounting seat 201 in the second direction (as shown). Figure 4 The second direction is orthogonal to the first direction. Figure 4 As shown, the first roller 202 is connected to the mounting base 201 and is located below the mounting base 201. A driver is provided inside the first roller 202 so that the first roller 202 can rotate in a self-driven manner.

[0040] The second roller 203 is provided on the mounting base 201, and the second roller 203 can rotate about the second direction relative to the mounting base 201. The second roller 203 can rotate along the second direction and the third direction (such as Figure 4 The third direction is orthogonal to the first and second directions, so that the second roller 203 has a standby position spaced apart from the first roller 202 in the second direction and a working position opposite to and spaced apart from the first roller 202 in the third direction. In the working position, the second roller 203 is located in the accommodating groove 300, and the first roller 202 and the second roller 203 are suitable for clamping the strap 200. The strap 200 can be moved along the first direction for tensioning under the friction drive of the rotation of the first roller 202 and / or the second roller 203.

[0041] Specifically, if Figure 4 As shown, a first telescopic member 205 is provided on the mounting base 201, and the fixed end of the first telescopic member 205 is connected to the mounting base 201. The telescopic end of the first telescopic member 205 can be telescopically moved in the left and right directions relative to the mounting base 201. The telescopic end of the first telescopic member 205 is provided with a second telescopic member 206. The fixed end of the second telescopic member 206 is connected to the first telescopic member 205. The telescopic end of the second telescopic member 206 can be moved in the up and down directions relative to the mounting base 201. The telescopic end of the second telescopic member 206 is connected to the second roller 203. The second roller 203 has a driver inside so that the second roller 203 can rotate self-drivenly. The second roller 203 can move in the left and right directions relative to the mounting base 201 under the drive of the first telescopic member 205. The second roller 203 can move in the up and down directions relative to the mounting base 201 under the drive of the second telescopic member 206, so that the second roller 203 has a waiting position spaced apart from the first roller 202 in the left and right directions and a working position opposite to and spaced apart from the first roller 202 in the up and down directions.

[0042] Figure 4 The figure shows a schematic diagram of the working position. At this time, the two tensioning components 2 correspond to the two receiving grooves 300 one by one. The first roller 202 is located above the upper end surface of the battery stack 100 and is opposite to the corresponding receiving groove 300. The second roller 203 is located inside the corresponding receiving groove 300. One end of the strap 200 wrapped around the battery stack 100 is clamped between the first roller 202 and the second roller 203 of one tensioning component 2, and the other end of the strap 200 is clamped between the first roller 202 and the second roller 203 of the other tensioning component 2. The first roller 202 and the second roller 203 rotate in opposite directions, the first rollers 202 of the two tensioning assemblies 2 rotate in opposite directions, and the second rollers 203 of the two tensioning assemblies 2 rotate in opposite directions. The first roller 202 and the second roller 203 drive the strap 200 to move in the front-to-back direction through friction on the surface of the strap 200 during rotation, so that the two ends of the strap 200 move relative to each other in the front-to-back direction under the drive of the two tensioning assemblies 2 to achieve tensioning of the strap 200, and make the tensioned strap 200 fit tightly against the surface of the battery stack 100.

[0043] When the tensioning is completed and it is necessary to switch to the next battery stack 100, the second roller 203 first moves in the left and right directions in the receiving groove 300 under the drive of the second telescopic member 206, so that the second roller 203 moves to the side and lower part of the strap 200. At this time, there is no strap 200 directly above the second roller 203. Then, the second roller 203 moves upward under the drive of the first telescopic member 205 to disengage from the receiving groove 300 and the battery stack 100 and move to the waiting position. At this time, since the first roller 202 and the second roller 203 are both located above the battery stack 100, the next battery stack 100 can be replaced. Then the second roller 203 is driven to move downward to the receiving groove first. 300, and then move in the left and right directions to just below the strap 200 so that it can cooperate with the first roller 202 to perform tensioning work. Furthermore, when the second roller 203 is just below the strap 200, the first telescopic member 205 can also be used to drive the second roller 203 to move upward so that the second roller 203 abuts against the strap 200, ensuring that the rotation of the second roller 203 can drive the strap to move. The second roller 203 can also be driven by the first telescopic member 205 to move downward so that the second roller 203 is separated from the strap 200, avoiding friction between the second roller 203 and the strap 200 when the second roller 203 moves in the left and right directions, causing damage to both.

[0044] It can be understood that the first roller and the second roller are not limited to being able to rotate and drive the strap to tighten and move. In other embodiments, the first roller can be rotated to drive the strap to tighten and move, and the second roller only cooperates with the first roller to clamp the strap. When the strap moves, the second roller is driven to rotate due to the friction of the strap; of course, the second roller can also be rotated to drive the strap to tighten and move, and the first roller can be driven to rotate.

[0045] It can be understood that the number of tensioning assemblies is not limited to two. In other embodiments, the number of tensioning assemblies is multiple, and the multiple tensioning assemblies are divided into two groups arranged sequentially in the first direction, wherein the first rollers of one group of tensioning assemblies have the same rotation direction and the second rollers have the same rotation direction, wherein the first rollers of another group of tensioning assemblies have the same rotation direction and are opposite to the first rollers of one group of tensioning assemblies, and the second rollers of the other group have the same rotation direction and are opposite to the second rollers of one group of tensioning assemblies. In other words, one group of tensioning assemblies drives the straps to move forward, and the other group of tensioning assemblies drives the straps to move backward.

[0046] The strap-type fuel cell stack assembly device with a tensioning function in an embodiment of the present invention is provided with at least two tensioning assemblies on the frame, and the tensioning assembly includes a first roller and a second roller. In the working position, the second roller is located in the receiving groove of the fuel cell stack, and the first roller and the second roller are suitable for clamping the strap. The strap can be moved in the first direction under the friction drive of the rotation of the first roller and / or the second roller. The two ends of the strap are driven to move relative to each other in the first direction by at least two tensioning assemblies to tension the strap. Since the second roller is located in the receiving groove, the strap is attached to the surface of the fuel cell stack after tensioning and will not be loose.

[0047] In some embodiments, there are at least two second rollers 203, and at least two second rollers 203 are arranged at intervals in the second direction. In the working position, one of the second rollers 203 is opposite to and spaced from a portion of the first roller 202 in the third direction, and the other second roller 203 is opposite to and spaced from another portion of the first roller 202 in the third direction. In the standby position, the first roller 202 is located between two adjacent second rollers 203 in the second direction.

[0048] like Figure 4 As shown, there are two second rollers 203 spaced apart in the left and right directions, and the mounting seat 201 is provided with two first telescopic members 205 spaced apart in the left and right directions, and each first telescopic member 205 is provided with a second telescopic member 206. The second roller 203 on the left is connected to the first telescopic member 205 and the second telescopic member 206 on the left and moves under the drive of the first telescopic member 205 and the second telescopic member 206 on the left, and the second roller 203 on the right is connected to the first telescopic member 205 and the second telescopic member 206 on the right and moves under the drive of the first telescopic member 205 and the second telescopic member 206 on the right. In the waiting position, the first roller 202 is located between the two second rollers 203 in the left and right directions. When the second roller 203 moves from the waiting position to the working position, the two second telescopic parts 206 move downward synchronously to allow the two second rollers 203 to move into the accommodating groove 300, and then the two first telescopic parts 205 drive the two second rollers 203 to move in a relatively close direction in the left and right directions, so that the two second rollers 203 move to directly below the strap 200, and then the two second telescopic parts 206 move upward synchronously to allow the two second rollers 203 to contact the lower surface of the strap 200, and the second roller 203 on the left contacts the left edge of the strap 200, and the second roller 203 on the right contacts the right edge of the strap 200, and the two second rollers 203 are opposite to the first roller 202 in the up and down directions respectively.

[0049] Compared with the solution with only one second roller, the two separate second rollers have smaller dimensions in the left-right direction, and occupy less space when the second roller enters or exits the receiving slot from the left or right side of the strap, making it easier for the second roller to move. At the same time, the dimension of the receiving slot in the left-right direction is reduced, thereby reducing the impact of the receiving slot on the battery stack structure.

[0050] At the same time, two separate second rollers are set up so that the distance between the two second rollers can be adjusted by the telescopic displacement of the first telescopic member when in the working position, so that the tensioning assembly can be adapted to various types of straps with different sizes in the left and right directions.

[0051] It can be understood that the second rollers are not limited to being set at two. In other embodiments, the second roller can be only one or multiple. The multiple second rollers are divided into a first group located on the left and a second group located on the right. The multiple second rollers in the first group move under the drive of the first telescopic member on the left, and the multiple second rollers in the second group move under the drive of the first telescopic member on the right.

[0052] In other embodiments, the first roller 202 includes a first wheel body 2021 and a second wheel body 2022 spaced apart in the second direction. In the working position, the first wheel body 2021 is opposite to and spaced apart from a second roller 203 in the third direction, and the second wheel body 2022 is opposite to and spaced apart from another second roller 203 in the third direction.

[0053] like Figure 4 As shown, the first roller 202 includes a first wheel body 2021 and a second wheel body 2022 arranged at intervals in the left and right directions, and the first wheel body 2021 and the second wheel body 2022 are connected by a connecting shaft. In other words, the projection of the first roller 202 on the horizontal projection plane is an I-shape, and the connecting shaft is connected to the mounting seat 201. In the working position, the second roller 203 on the left and the second wheel body 2022 are opposite and spaced apart in the up and down directions, and the second roller 203 on the right and the first wheel body 2021 are opposite and spaced apart in the up and down directions. The left edge of the strap 200 is clamped between the second roller 203 on the left and the second wheel body 2022, and the right edge of the strap 200 is clamped between the second roller 203 on the right and the first wheel body 2021.

[0054] The first roller is configured to include a first wheel body and a second wheel body, so that the weight of the first roller is reduced, thereby achieving lightweight equipment. When the tensioning assembly needs to adapt to different types of straps, in addition to adjusting the telescopic displacement of the first telescopic member to adjust the distance between the two second rollers, it is also necessary to replace the first roller with a different distance between the first wheel body and the second wheel body.

[0055] It is understandable that the structure of the first roller is not limited to being set as Figure 4 In the form shown, in other embodiments, the first roller can also be configured as a wheel body with a constant cross-section in the left and right directions.

[0056] In some embodiments, the first roller 202 is movable along a third direction relative to the mounting base 201 .

[0057] like Figure 4 As shown, a third telescopic member 207 is provided on the mounting seat 201, the fixed end of the third telescopic member 207 is connected to the mounting seat 201, the telescopic end of the third telescopic member 207 can be moved in the up and down directions relative to the mounting seat 201, and the first roller 202 is provided at the telescopic end of the third telescopic member 207, so that the third telescopic member 207 drives the first roller 202 to move in the up and down directions relative to the mounting seat 201.

[0058] The first roller can be moved vertically relative to the mounting base to adjust the distance between the first roller and the upper surface of the battery stack. This allows the tensioning assembly to accommodate straps of varying vertical dimensions, or in other words, straps of varying thicknesses. Furthermore, when replacing the battery stack, the first roller can be positioned above and away from the battery stack and strap, facilitating access to the battery stack. Of course, in the working position, the first roller needs to be moved downward to a set position to confine the strap so that it adheres to the surface of the battery stack.

[0059] It is understandable that, in other embodiments, the position of the first roller in the up and down directions may also be fixed.

[0060] In some embodiments, the tensioning assembly 2 further includes a guide member 204 , which is disposed on the frame 1 and extends along the second direction. The mounting seat 201 is disposed on the guide member 204 and is movable along the extension direction of the guide member 204 .

[0061] like Figures 1-4 As shown, the battery stack 100 is provided with a plurality of straps 200 arranged at intervals along the left-right direction, and a guide member 204 is provided on the frame 1 extending along the left-right direction. The guide member 204 is preferably a slide rail, and the mounting seat 201 is slidably connected to the guide member 204 and can move along the extension direction of the guide member 204 to drive the first roller 202 and the second roller 203 to move along the left-right direction with the mounting seat 201, so that the first roller 202 and the second roller 203 can correspond to different positions of the accommodating groove 300 in the left-right direction to tighten the straps 200 at different positions.

[0062] The guide member 204 and the mounting seat 201 can be linear guide devices or linear module devices, or a screw extending in the left and right directions can be set on the guide member 204, and the screw is threadedly connected to the mounting seat 201. The screw rotates around the central axis of the screw under the drive of the motor to drive the mounting seat 201 to move along the extension direction of the guide member 204.

[0063] It is understandable that in other embodiments, the tensioning assembly may not have a guide member, and in this case, only one strap is provided on the battery stack.

[0064] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function of this embodiment further includes a support platform 3 and a pressure member 4 .

[0065] The support platform 3 is arranged on the frame 1. The surface of the support platform 3 is provided with multiple first avoidance grooves 301 for the straps 200 to pass through and extending along the first direction. The multiple first avoidance grooves 301 are arranged at intervals along the second direction. The surface of the support platform 3 is used to place the battery stack 100.

[0066] Specifically, if Figure 1 and Figure 5 As shown, a support platform 3 is provided on the frame 1. The upper surface of the support platform 3 is provided with a plurality of first avoidance grooves 301 extending in the front-to-back direction. The plurality of first avoidance grooves 301 are arranged at intervals in the left-to-right direction. The first avoidance grooves 301 are used to pass the binding straps 200. The upper surface of the support platform 3 is used to place the fuel stack 100. The upper surface of the support platform 3 is also provided with a plurality of test medium inlets 302 and a plurality of test medium outlets 303. The plurality of test medium inlets 302 correspond one-to-one with the fuel inlet, air inlet, and water inlet of the fuel stack 100 to allow the corresponding medium to be introduced into the fuel inlet, air inlet, and water inlet. The plurality of test medium outlets 303 correspond one-to-one with the fuel outlet, air outlet, and water outlet of the fuel stack 100 to allow the introduced medium to be discharged, thereby performing airtightness testing on the fuel stack 100. The side of the support platform 3 is provided with interfaces 304 corresponding one-to-one with the plurality of test medium inlets 302 and the plurality of test medium outlets 303 to supply or discharge the medium.

[0067] The pressure member 4 is provided on the frame 1, and the pressure member 4 can move along the third direction relative to the frame 1 to compress the battery stack 100. The surface of the pressure member 4 abutting the battery stack 100 is provided with a plurality of second avoidance grooves 401 for the strap 200 to pass through and extending along the first direction. The plurality of second avoidance grooves 401 are arranged at intervals along the second direction.

[0068] like Figure 1 and Figure 6As shown, the frame 1 includes a plurality of slide bars 101 extending in the vertical direction and a downward pressure drive member 102. A downward pressure platform 403 is provided on the top of the pressure member 4. The downward pressure platform 403 is inserted through the plurality of slide bars 101 and can slide in the vertical direction relative to the slide bars 101. The downward pressure drive member 102 is connected to the downward pressure platform 403 to drive the downward pressure platform 403 to slide in the vertical direction, thereby enabling the pressure member 4 to move downward to apply pressure to the battery stack 100, thereby compacting the battery stack 100. The lower surface of the pressure member 4 is provided with a plurality of second avoidance grooves 401 extending in the front-to-back direction. The second avoidance grooves 401 are used to pass through the straps 200, so that the straps 200 can be tightened after the battery stack 100 is compacted. The plurality of second avoidance grooves 401 are spaced apart in the left-right direction and are vertically opposed to the plurality of first avoidance grooves 301.

[0069] In some embodiments, the pressure member 4 is provided with a cavity 402 extending through the pressure member 4 along a third direction, and the cavity 402 accommodates the tensioning assembly 2. The strap-type fuel cell stack assembly device with tensioning function of this embodiment further includes a welding member 5, which is provided on the frame 1 and passes through the cavity 402. The welding member 5 is movable relative to the frame 1 in the third and second directions to weld the overlapping straps 200 between two adjacent tensioning assemblies 2.

[0070] like Figure 1 、 Figure 2 、 Figure 6 and Figure 10 As shown, the welding part 5 is located between the two tensioning assemblies 2, and the welding part 5 is arranged on the first vertical driver 501. The first vertical driver 501 can drive the welding part 5 to move downward to weld the overlapping straps 200 located between the two tensioning assemblies 2, so that the straps 200 are welded into a ring set on the outer periphery of the battery stack 100 to bind the battery stack 100. The first vertical driver 501 can also drive the welding part 5 to move upward to detach from the straps 200 after welding is completed. The first vertical driver 501 is arranged on the first horizontal driver 502. The first horizontal driver 502 can drive the first vertical driver 501 and the welding part 5 to move in the left and right directions to weld multiple straps 200 located on the battery stack 100.

[0071] The pressure member 4 is provided with a cavity 402 that passes through the pressure member 4 in the up-down direction. The cavity 402 includes a large cavity located at the top and a small cavity located at the bottom. The large cavity is connected to the small cavity. The large cavity extends in the front-to-back direction and is preferably a rectangular cavity. The small cavity is provided in plurality. The plurality of small cavities correspond to and are connected to the plurality of second avoidance grooves 401 one by one. The guide members 204 of the two tensioning assemblies 2 are both connected to the pressing platform 403 and are located below the pressing platform 403, so that the guide members 204 of the two tensioning assemblies 2 are indirectly provided on the frame 1. The guide members 204 and the mounting seat 201 of the two tensioning assemblies 2 are both located in the large cavity. In the standby position, the first rollers 202 of the two tensioning assemblies 2 Both the first roller 202 and the second roller 203 are located in the large chamber and can be moved along the extension direction of the guide member 204 under the drive of the mounting seat 201, so that the first roller 202 and the second roller 203 can move to the top of any small chamber. In the working position, the first roller 202 of the two tensioning assemblies 2 moves downward under the drive of the third telescopic member 207 and enters a small chamber. The second roller 203 moves downward under the drive of the second telescopic member 206 and passes through the small chamber into the receiving groove 300, so that the first roller 202 and the second roller 203 can tension the strap 200 corresponding to the small chamber and located in the second avoidance groove 401 connected to the small chamber. Then, the welding member 5 moves downward under the drive of the first vertical drive 501 into the small chamber and is located between the two tensioning assemblies 2, so that the welding member 5 can weld the straps 200 tensioned by the two tensioning assemblies 2.

[0072] It can be understood that the tensioning assembly is not limited to being located in the cavity of the pressure member. In other embodiments, one tensioning assembly is located on the front side of the pressure member, and the other tensioning assembly is located on the rear side of the pressure member. In other words, the pressure member is located between the two tensioning assemblies. The two tensioning assemblies can be connected to the downward pressure platform and located at the bottom of the downward pressure platform, or they can be connected to the frame through a bracket.

[0073] In some embodiments, the strap-type fuel cell stack assembly device with tensioning function of this embodiment also includes a bending component 6, which is movably arranged on the frame 1 along the second direction and the third direction to bend the two ends of the strap 200 located on the support platform 3 upward in the first direction.

[0074] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 8 and Figure 9As shown, the bending assembly 6 includes two bending parts 601 and a pressing part 602. The two bending parts 601 are arranged at intervals along the front-to-back direction, and the pressing part 602 is located between the two bending parts 601. The support platform 3 is provided with a plurality of through holes penetrating the support platform 3 along the up-down direction. The plurality of through holes are arranged in a plurality of groups at intervals along the left-to-right direction. The plurality of groups of through holes are connected to a plurality of first avoidance grooves 301 in a one-to-one correspondence. Each group of through holes includes three through holes arranged at intervals along the front-to-back direction, wherein the through hole in the middle is suitable for the pressing part 602 to pass through, and the two through holes located on the front and rear sides are suitable for the corresponding bending parts 601 to pass through.

[0075] The pressing member 602 is arranged on the top of the second vertical driving member 603, and the second vertical driving member 603 is used to drive the pressing member 602 to move upward to press the strap located in the first avoidance groove 301 onto the lower surface of the battery stack 100. The second vertical driving member 603 is arranged on the second horizontal driving member 604, and the second horizontal driving member 604 is arranged on the frame 1. The second horizontal driving member 604 is used to drive the second vertical driving member 603 and the pressing member 602 to move in the left and right directions to respectively press the straps 200 in multiple first avoidance grooves 301.

[0076] The two bending members 601 are correspondingly arranged on the two third vertical driving members 605. The third vertical driving member 605 is used to drive the bending member 601 to move upward and bend the front and rear ends of the strap 200 in the first avoidance groove 301 upward and fit it on the side wall of the battery stack 100 after passing through the support platform 3. The two third vertical driving members 605 are correspondingly arranged on the two third horizontal driving members 606. The third horizontal driving member 606 extends along the front and rear directions to drive the third vertical driving member 605 and the bending member 601 connected thereto to move along the front and rear directions to adjust the distance between the bending member 601 and the side wall of the battery stack 100, so that the bending member 601 can adapt to straps 200 of different thicknesses. The third horizontal driving member 606 is arranged on the fourth horizontal driving member 607. The fourth horizontal driving member 607 extends along the left and right directions to drive the bending member 601 to move along the left and right directions to bend the straps 200 in multiple first avoidance grooves 301 respectively.

[0077] After the bending operation, both ends of the binding strap 200 are inserted into the second avoidance groove 401 and into the corresponding tensioning assembly 2 by a robotic arm or manually, and then tensioning and welding operations are performed.

[0078] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function of this embodiment further includes a stacking assembly 7 and a transfer assembly 8. The stacking assembly 7 is provided on the frame 1 and is used to stack the fuel cell stack 100 along the third direction. The transfer assembly 8 is provided on the frame 1 and is used to transfer the fuel cell stack 100 located on the stacking assembly to the support platform 3.

[0079] like Figure 3 and Figure 7 As shown, the stacking assembly 7 includes a stacking base 701 and a plurality of limiting bosses 703 and a plurality of limiting frames 702 provided on the upper surface of the stacking base 701. The limiting bosses 703 and the limiting frames 702 are used to limit the battery stack 100. The limiting frames 702 extend in the up-down direction and are used to abut the side wall of the battery stack 100. The battery stack 100 is stacked on the stacking assembly 7 in an inverted manner, and the front end plate 1001, the front insulating plate 1001 and the front insulating plate 1002 are stacked in sequence from bottom to top. 1002, front current collecting plate 1003, front unipolar plate, membrane electrode and bipolar plate assembly plate 1004, rear unipolar plate 1005, rear current collecting plate 1006, rear insulating plate 1007, compensation plate 1008, disc spring guide rod and disc spring combination 1009 and rear end plate 1010. The rear end plate 1010 has a receiving groove 300 on its upper surface when inverted. After stacking, the limit frame 702 needs to be disassembled to separate from the stacking base 701.

[0080] like Figure 5 As shown, the transfer assembly 8 includes a fifth horizontal drive member 801, a transfer clamp 802, a transfer clamp 803 and a guide rail 804. The transfer clamp 802 is set on the battery stack 100 after the stacking operation by a robot or manually to limit the battery stack 100. The transfer clamp 802 is preferably a U-shaped clamp with an opening downward. Two fifth horizontal drive members 801 extending in the front and rear directions are provided on the frame 1, and the two fifth horizontal drive members 801 are arranged at intervals in the left and right directions. The stacking assembly 7 and the support platform 3 are both located between the two fifth horizontal drive members 801, and the stacking assembly 7 is located at the front end and the support platform 3 is located at the rear end. The two A plurality of guide rails 804 are provided between the fifth horizontal driving member 801 and are spaced apart in the left and right directions. The guide rails 804 extend in the front-to-back direction and are located between the stacking assembly 7 and the support platform 3. The guide rails 804 are preferably provided with a plurality of rollers or balls. The fifth horizontal driving member 801 is provided with a transfer clamp 803 for clamping the battery stack 100 and the transfer clamp 802. Driven by the fifth horizontal driving member 801, the transfer clamp 803 clamps the battery stack 100 and the transfer clamp 802 and moves them from the stacking assembly 7 to the support platform 3. Then, after removing the transfer clamp 802, the pressure member performs the pressing operation, bending operation, tensioning operation and welding operation.

[0081] In some embodiments, the strap-type fuel cell stack assembly device with a tensioning function of this embodiment also includes a distance measuring component 9, which includes a detection frame 901 and a distance detector 902. The detection frame 901 is arranged on the frame 1 and is adjacent to the support platform 3. The distance detector 902 is arranged on the detection frame 901 and can move along a third direction relative to the detection frame 901.

[0082] like Figure 1As shown, a detection frame 901 extending in the up and down directions is provided on the frame 1. The detection frame 901 is arranged adjacent to the support platform 3. The distance detector 902 is arranged on the detection frame 901 and can be moved in the up and down directions relative to the detection frame 901 to measure the stacking position accuracy of each component of the fuel cell stack 100.

[0083] In the description of the present invention, it should be understood that the terms "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0084] Furthermore, the terms "first," "second," and the like are used solely to distinguish components and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0085] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0087] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0088] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A strap-type fuel cell stack assembly device with a tensioning function, characterized in that: The invention comprises a frame (1) and at least two tensioning assemblies (2) arranged on the frame (1), wherein the frame (1) is used to place a battery stack (100) and a strap (200) for binding the battery stack (100), an end surface of the battery stack (100) is provided with a receiving groove (300), and at least two tensioning assemblies (2) are arranged at intervals along a first direction, and the tensioning assemblies (2) comprise: A mounting seat (201), the mounting seat (201) being connected to the frame (1); a first roller (202), the first roller (202) being arranged on the mounting seat (201), and the first roller (202) being rotatable relative to the mounting seat (201) in a second direction, the second direction being orthogonal to the first direction, and the first roller having a driver therein to enable the first roller to rotate in a self-driven manner; A second roller (203) is provided on the mounting seat (201), and the second roller (203) can rotate around a second direction relative to the mounting seat (201), and the second roller (203) can move along a second direction and a third direction relative to the mounting seat (201), and the third direction is orthogonal to the first direction and the second direction, so that the second roller (203) has a waiting position spaced apart from the first roller (202) in the second direction and a working position spaced apart from the first roller (202) in the third direction, in which the second roller (203) is located in the accommodating groove (300), and the first roller (202) and the second roller (203) are suitable for clamping the strap (200), and the strap (200) can move along the first direction to be tensioned under the friction drive of the rotation of the first roller (202) and / or the second roller (203).

2. The strap-type fuel cell stack assembly device with tensioning function according to claim 1, characterized in that: There are at least two second rollers (203), and at least two second rollers (203) are arranged at intervals in the second direction. In the working position, one of the second rollers (203) is opposite to and spaced from a portion of the first roller (202) in the third direction, and another second roller (203) is opposite to and spaced from another portion of the first roller (202) in the third direction. In the standby position, the first roller (202) is located between two adjacent second rollers (203) in the second direction.

3. The strap-type fuel cell stack assembly device with tensioning function according to claim 2, characterized in that: The first roller (202) comprises a first wheel body (2021) and a second wheel body (2022) spaced apart in the second direction; in the working position, the first wheel body (2021) and one of the second rollers (203) are arranged opposite to each other and spaced apart in the third direction, and the second wheel body (2022) and the other of the second rollers (203) are arranged opposite to each other and spaced apart in the third direction.

4. The strap-type fuel cell stack assembly device with tensioning function according to claim 1, characterized in that: The first roller (202) is movable along a third direction relative to the mounting seat (201).

5. The strap-type fuel cell stack assembly device with tensioning function according to claim 1, characterized in that: The tensioning assembly (2) further comprises a guide member (204), the guide member (204) being arranged on the frame (1) and extending along the second direction, and the mounting seat (201) being arranged on the guide member (204) and movable along the extending direction of the guide member (204).

6. The strap-type fuel cell stack assembly device with a tensioning function according to any one of claims 1 to 5, characterized in that: Also includes: A support platform (3), the support platform (3) being provided on the frame (1), the surface of the support platform (3) being provided with a plurality of first avoidance grooves (301) for the straps (200) to pass through and extending along the first direction, the plurality of first avoidance grooves (301) being arranged at intervals along the second direction, and the surface of the support platform (3) being used for placing the battery stack (100); A pressure member (4) is provided on the frame (1), and the pressure member (4) can move along the third direction relative to the frame (1) to compress the battery stack (100), and a surface of the pressure member (4) abutting against the battery stack (100) is provided with a plurality of second avoidance grooves (401) for the strap (200) to pass through and extending along the first direction, and the plurality of second avoidance grooves (401) are arranged at intervals along the second direction.

7. The strap-type fuel cell stack assembly device with tensioning function according to claim 6, characterized in that: The pressure member (4) is provided with a cavity (402) penetrating the pressure member (4) along the third direction, and the cavity (402) accommodates the tensioning assembly (2); The invention also includes a welding member (5), which is arranged on the frame (1) and passes through the cavity (402), and the welding member (5) can move along the third direction and the second direction relative to the frame (1) to weld the overlapping straps (200) between two adjacent tensioning assemblies (2).

8. The strap-type fuel cell stack assembly device with tensioning function according to claim 6, characterized in that: It also includes a bending assembly (6), which is movably arranged on the frame (1) along the second direction and the third direction, and is used to bend the two ends of the strap (200) located on the support platform (3) upward in the first direction.

9. The strap-type fuel cell stack assembly device with tensioning function according to claim 8, characterized in that: Also includes: A stacking assembly (7), the stacking assembly (7) being arranged on the frame (1), and the stacking assembly (7) being used to stack the battery stack (100) along the third direction; A transfer assembly (8), the transfer assembly (8) being arranged on the frame (1), and the transfer assembly (8) being used to transfer the battery stack (100) located on the stacking assembly to the support platform (3).

10. The strap-type fuel cell stack assembly device with tensioning function according to claim 6 or 9, characterized in that: The invention also includes a distance measuring component (9), wherein the distance measuring component (9) includes a detection frame (901) and a distance detector (902), wherein the detection frame (901) is arranged on the frame (1) and is adjacent to the support platform (3), and the distance detector (902) is arranged on the detection frame (901) and is movable along the third direction relative to the detection frame (901).

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