Fuel cell stack assembly device and method

Abstract

The present invention proposes a fuel cell stack assembly device and method, the fuel cell stack assembly device includes: a bracket, a support platform and a pressing platform, the bracket includes a base and a frame, the base includes a workbench, the frame is connected to the workbench and is located above the workbench, the support platform is arranged on the upper surface of the workbench, the support platform includes an air inlet cavity and an air outlet cavity, the upper surface of the support platform is provided with a first air inlet hole connected to the air inlet cavity and a first air outlet hole connected to the air outlet cavity, the support platform is provided with a second air inlet hole connected to the air inlet cavity and a second air outlet hole connected to the air outlet cavity, the upper surface of the support platform is used to place the stack, the pressing platform is located above the support platform and is movably arranged on the frame in the up and down directions, and the pressing platform is used to press the stack. The fuel cell stack assembly device of the present invention can perform air tightness detection on the stack, thereby improving the safety of the stack.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a fuel cell stack assembly device and method. Background Art

[0002] During the assembly process of the fuel cell stack, the individual cells need to be assembled into a tightly packed multi-stage stack structure through end plates and fasteners, and the pressing force is used to pressurize the battery components into close contact.

[0003] Related technologies mainly use screws or straps as solutions for stack assembly. The screw-type stack assembly solution may cause bending and deformation of the end plate, uneven distribution of contact pressure between components, occupy a large structural space, and the stack assembly process is cumbersome and inefficient.

[0004] Compared with the screw-type battery stack assembly scheme, the strap-type battery stack assembly scheme can make the battery stack structure more compact, the contact pressure distribution between components more uniform, and has the advantages of simple assembly process and high efficiency. However, the strap-type battery stack assembly scheme in the prior art does not integrate an airtightness detection device. Therefore, the sealing performance of the battery stack cannot be guaranteed, resulting in low safety of the battery stack. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention provides a fuel cell stack assembly device, which can perform air tightness detection on the fuel cell stack, thereby improving the safety of the fuel cell stack.

[0007] An embodiment of the present invention provides a fuel cell stack assembly method, which can perform air tightness detection on the fuel cell stack, thereby improving the safety of the fuel cell stack.

[0008] A fuel cell stack assembly device according to an embodiment of the present invention includes: a bracket, the bracket including a base and a frame, the base including a workbench, the frame connected to the workbench and located above the workbench; a support platform, the support platform is arranged on the upper surface of the workbench, the support platform includes an air inlet cavity and an air outlet cavity, the upper surface of the support platform is provided with a first air inlet hole connected to the air inlet cavity and a first air outlet hole connected to the air outlet cavity, the support platform is provided with a second air inlet hole connected to the air inlet cavity and a second air outlet hole connected to the air outlet cavity, the upper surface of the support platform is used for placing the fuel cell stack; and a pressing platform, the pressing platform is located above the support platform and is movably arranged on the frame in an up and down direction, the pressing platform is used for pressing the fuel cell stack.

[0009] The fuel cell stack assembly device of the embodiment of the present invention places the stack on the upper surface of the support platform, and the first air inlet and the first air outlet are both sealed and connected to the air hole for air tightness detection on the stack, so that the test gas can be introduced into the air inlet cavity through the second air inlet to realize the air tightness detection of the stack. When the test gas is introduced, the second air outlet is in a closed state.

[0010] Therefore, the fuel cell stack assembly device of the embodiment of the present invention can perform air tightness detection on the fuel cell stack, thereby improving the safety of the fuel cell stack.

[0011] In some embodiments, the upper surface of the support platform is provided with a first annular groove and a second annular groove, the first annular groove surrounds the first air inlet, the second annular groove surrounds the first air outlet, a first annular seal is provided in the first annular groove, and a second annular seal is provided in the second annular groove.

[0012] In some embodiments, the fuel cell stack assembly device of an embodiment of the present invention also includes a distance measuring component, which includes a detection frame and a distance detector. The detection frame is arranged on the upper surface of the workbench and is adjacent to the support platform. The distance detector is movably arranged on the detection frame in the up and down directions.

[0013] In some embodiments, the fuel cell stack assembly device of the embodiment of the present invention also includes a bundling component, the upper surface of the support platform is provided with a plurality of first avoidance grooves for the straps to pass through and extending along the first horizontal direction, the plurality of first avoidance grooves are arranged at intervals along the second horizontal direction, the lower surface of the pressure platform is provided with a plurality of second avoidance grooves for the straps to pass through and extending along the first horizontal direction, the plurality of second avoidance grooves are arranged at intervals along the second horizontal direction, the plurality of first avoidance grooves correspond one-to-one with the plurality of second avoidance grooves in the up and down directions, the first horizontal direction is perpendicular to the second horizontal direction, and the bundling component is used to pass the straps through the first avoidance grooves and the second avoidance grooves and bundle them on the stack.

[0014] In some embodiments, the binding assembly includes: a first pressing member, the first pressing member is movably arranged in the base along the up-down direction and the second horizontal direction so as to press the strap to the lower surface of the battery stack; a first bending member and a second bending member, the first bending member and the second bending member are arranged at intervals in the first horizontal direction, the first bending member and the second bending member are movably arranged in the base along the up-down direction and the second horizontal direction so as to bend the two ends of the strap in the first horizontal direction upward; a first clamping member and a second clamping member, the first clamping member and the second clamping member are arranged at intervals in the first horizontal direction, the first clamping member is used to clamp one end of the strap in the first horizontal direction, the second clamping member is used to clamp the other end of the strap in the first horizontal direction, the first clamping member and the second clamping member are movably arranged on the frame along the up-down direction and the second horizontal direction so as to tension the strap; a second pressing member a third pressing member and a third pressing member, the second pressing member and the third pressing member are arranged at intervals in the first horizontal direction, and the second pressing member and the third pressing member are movably arranged on the pressing platform along the first horizontal direction and the second horizontal direction so as to press the two ends of the binding strap to the side of the battery stack; a third bending member and a fourth bending member, the third bending member and the fourth bending member are arranged at intervals in the first horizontal direction, and the third bending member and the fourth bending member are movably arranged on the pressing platform along the first horizontal direction and the second horizontal direction so as to bend the two ends of the binding strap relative to each other along the first horizontal direction; a fourth pressing member, the fourth pressing member is movably arranged on the pressing platform along the up-down direction and the second horizontal direction so as to press the two ends of the binding strap to the upper surface of the battery stack; and a welding member, the welding member is movably arranged on the frame along the up-down direction and the second horizontal direction so as to weld the two ends of the binding strap.

[0015] In some embodiments, the first bending member and the second bending member are movably disposed in the base along the first horizontal direction, and the first clamping member and the second clamping member are movably disposed on the frame along the first horizontal direction.

[0016] The fuel cell stack assembly method according to the embodiment of the present invention comprises the following steps:

[0017] Assembling a battery stack, wherein the first end plate, the internal component, the disc spring and the second end plate are assembled in sequence from bottom to top to form the battery stack;

[0018] Compressing the battery stack;

[0019] The battery stack is bundled.

[0020] In some embodiments, after bundling the fuel cell stack, and / or after compacting the fuel cell stack and before bundling the fuel cell stack, the air tightness of the fuel cell stack is detected.

[0021] In some embodiments, after bundling the battery stack, and / or after compacting the battery stack and before bundling the battery stack, the assembly accuracy of the battery stack is detected.

[0022] In some embodiments, bundling the battery stack comprises:

[0023] A binding belt is arranged below the battery stack, and the binding belt is pressed to the lower surface of the battery stack by a first pressing member;

[0024] Using a first bending piece and a second bending piece to bend the two ends of the binding strap upwards;

[0025] Clamp the binding strap with a first clamping member and a second clamping member, and move the first clamping member and the second clamping member upward to tighten the binding strap;

[0026] Using a second pressing member and a third pressing member to press the binding band to the side of the battery stack;

[0027] Using a third bending member and a fourth bending member to relatively bend the two ends of the binding strap along a first horizontal direction;

[0028] Using a fourth pressing member to press the binding belt onto the upper surface of the battery stack;

[0029] Solder both ends of the tie strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of a fuel cell stack assembly device according to an embodiment of the present invention.

[0031] Figure 2 It is a partial structural schematic diagram of a fuel cell stack assembly device according to an embodiment of the present invention.

[0032] Figure 3 It is a schematic structural diagram of a support platform of a fuel cell stack assembly device according to an embodiment of the present invention.

[0033] Figure 4 It is a schematic diagram of the structure of the distance measuring component of the fuel cell stack assembly device according to an embodiment of the present invention.

[0034] Figure 5 It is a schematic diagram of the fuel cell stack structure of the fuel cell stack assembly device according to an embodiment of the present invention.

[0035] Figure 6 It is a partial structural schematic diagram of a fuel cell stack assembly device according to an embodiment of the present invention.

[0036] Figure 7 It is a partial structural schematic diagram of a fuel cell stack assembly device according to an embodiment of the present invention.

[0037] Figure 8 It is a schematic structural diagram of a pressing platform of a fuel cell stack assembly device according to an embodiment of the present invention.

[0038] Fig. 9 It is a partial structural schematic diagram of a bundling assembly of a fuel cell stack assembly device according to an embodiment of the present invention.

[0039] Fig.10 It is a partial structural schematic diagram of a bundling assembly of a fuel cell stack assembly device according to an embodiment of the present invention.

[0040] Fig.11 It is a partial structural schematic diagram of a bundling assembly of a fuel cell stack assembly device according to an embodiment of the present invention.

[0041] Fig.12 It is a partial structural schematic diagram of a bundling assembly of a fuel cell stack assembly device according to an embodiment of the present invention.

[0042] Fig.13 It is a partial structural schematic diagram of a bundling assembly of a fuel cell stack assembly device according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] First driver 100; first body 1001; first telescopic rod 1002;

[0045] Bracket 1; frame 11; base 12; workbench 121; first through hole 1211; leg 13;

[0046] Support platform 2; first side surface 21; second side surface 22; air inlet cavity 23; first air inlet hole 231; air outlet cavity 24; first air outlet hole 241; third side surface 25; second air inlet hole 251; fourth side surface 26; second air outlet hole 261; first annular groove 27; second annular groove 28; first avoidance groove 29; first protrusion 291; second protrusion 292; second through hole 201; third through hole 202; fourth through hole 203;

[0047] Pressing platform 3; substrate 31; fifth through hole 311; sixth through hole 312; pressing head 32; cavity 321; seventh through hole 322; second avoidance groove 323;

[0048] Distance measuring component 4; detection frame 41; distance detector 42;

[0049] Binding assembly 5; first pressing member 501; first pressing block 5011; first bending member 502; first bending block 5021; moving plate 5022; second bending member 503; second bending block 5031; first clamping member 504; first clamping block 5041; second clamping member 505; second clamping block 5051; second pressing member 506; second pressing block 5061; third pressing member 507; second pressing block 5071; third bending member 508; third bending block 5081; fourth bending member 509; fourth bending block 5091; fourth pressing member 510; fourth pressing block 5101; welding member 511; welding part 5111;

[0050] The first horizontal driving unit 5012; the first vertical driving unit 5013; the second horizontal driving unit 5023; the second vertical driving unit 5024; the third horizontal driving unit 5042; the third vertical driving unit 5043; the fourth horizontal driving unit 5044; the fifth horizontal driving unit 5062; the sixth horizontal driving unit 5063; the seventh horizontal driving unit 5082; the eighth horizontal driving unit 5083; the ninth horizontal driving unit 5102; the fourth vertical driving unit 5103;

[0051] Fuel stack 6: disc spring 60; first end plate 61; fuel inlet 611; air inlet 612; water inlet 613; first face 614; first binding groove 6141; second face 615; third face 616; 4 internal components 62; second end plate 63; positioning groove 631; fifth face 632; third binding groove 6321; sixth face 633; ​​fourth binding groove 6331; seventh face 634;

[0052] Stacking assembly 7; stacking platform 71; fifth side 711; sixth side 712; first positioning assembly 72; positioning block 721; first positioning surface 7211; second positioning surface 7212; third positioning surface 7213; fourth positioning surface 7214; second positioning assembly 73; positioning rod 731; avoidance notch 732; fixture 74; top plate 741; first side plate 742;

[0053] Running track 8; ball 81;

[0054] The first linear drive unit 9 ; the second driver 91 ; the first slide rail 92 ; the first slider 93 ; the moving member 94 ; the driving body 941 ; the first claw 942 ; and the second claw 943 . DETAILED DESCRIPTION

[0055] 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.

[0056] like Figure 1-13As shown, the fuel cell stack assembly device according to the embodiment of the present invention comprises: a bracket 1 , a support platform 2 and a pressing platform 3 .

[0057] like Figure 1 and Figure 2 As shown, the bracket 1 includes a base 12 and a frame 11, the base 12 includes a workbench 121, and the frame 11 is connected to the workbench 121 and is located above the workbench 121. The support platform 2 is arranged on the upper surface of the workbench 121, and the support platform 2 includes an air inlet cavity 23 and an air outlet cavity 24. The upper surface of the support platform 2 is provided with a first air inlet hole 231 communicating with the air inlet cavity 23 and a first air outlet hole 241 communicating with the air outlet cavity 24, and the support platform 2 is provided with a second air inlet hole 251 communicating with the air inlet cavity 23 and a second air outlet hole 261 communicating with the air outlet cavity 24. The upper surface of the support platform 2 is used to place the battery stack 6. The pressing platform 3 is located above the support platform 2 and is movably arranged on the frame 11 in the up and down directions. The pressing platform 3 is used to press the battery stack 6.

[0058] In addition, the fuel cell stack assembly device of the embodiment of the present invention further includes a first driver 100, which includes a first body 1001 and a first telescopic rod 1002. The first body 1001 is disposed on the frame 11, and the first telescopic rod 1002 is movable in the up and down direction relative to the first body 1001. The first telescopic rod 1002 is connected to the pressing platform 3. Figure 1 and Figure 2 As shown, there are two first drivers 100, and the two first drivers 100 are arranged opposite to each other in the left-right direction, so that the force exerted by the first telescopic rod 1002 of the first driver 100 on the pressing platform 3 is more balanced, which is conducive to the up-and-down movement of the pressing platform 3. It should be noted that the first driver 100 can be a driving member with a telescopic structure such as an electric cylinder or a pneumatic cylinder, so as to drive the pressing platform 3 to move in the up-and-down direction.

[0059] Specifically, Figure 1 and Figure 2 As shown, the bottom of the base 12 is also provided with a leg 13, and there are a plurality of legs 13, and the plurality of legs 13 are arranged at intervals along the circumference of the base 12 to ensure that the base 12 can be placed stably. Figure 1 The third side surface 25 and the fourth side surface 26 are opposite to each other in the left-right direction (in the left-right direction), the third side surface 25 is located on the left side of the fourth side surface 26, the second air inlet 251 is arranged on the third side surface 25, and the second air outlet 261 is arranged on the fourth side surface 26, so as to be connected with an external air source.

[0060] It can be understood that the battery stack 6 has an inlet and an outlet, the first air inlet hole 231 is used to connect the inlet with the air inlet cavity 23 , and the first air outlet hole 241 is used to connect the outlet with the air outlet cavity 24 .

[0061] That is to say, when performing an air tightness test, the battery stack 6 is placed on the upper surface of the support platform 2, so that the inlet of the battery stack 6 is connected to the air inlet cavity 23, and the outlet of the battery stack 6 is connected to the air outlet cavity 24. The first driving member is started to move the first telescopic rod 1002 downward to drive the downward pressure platform 3 to move downward until the downward pressure platform 3 squeezes the tested battery stack 6, so that the inlet of the battery stack 6 is sealed and connected to the air inlet cavity 23 through the first air inlet hole 231 and the outlet of the battery stack 6 is sealed and connected to the air outlet cavity 24 through the first air outlet hole 241, and the gas is supplied from the external source, that is, the test gas is introduced into the second air inlet to perform an air tightness test on the battery stack 6. It should be noted that after the downward pressure platform 3 squeezes the battery stack 6 and before the test gas is introduced, the second air outlet hole 261 is closed.

[0062] Therefore, the fuel cell stack assembly device of the embodiment of the present invention can perform air tightness detection on the fuel cell stack 6 , thereby improving the safety of the fuel cell stack 6 .

[0063] In some embodiments, Figure 3 As shown, a first annular groove 27 and a second annular groove 28 are provided on the upper surface of the support platform 2. The first annular groove 27 surrounds the first air inlet 231, and the second annular groove 28 surrounds the first air outlet 241. A first annular seal is provided in the first annular groove, and a second annular seal is provided in the second annular groove 28.

[0064] It can be understood that there are three first annular grooves 27, and the three first annular grooves 27 correspond to the three first air inlet holes 231 one by one, and there are three second annular grooves 28, and the three second annular grooves 28 correspond to the three first air outlet holes 241 one by one. The contour of the first annular groove 27 is substantially consistent with the contour of the first air inlet, and a first annular seal is disposed in each first annular groove 27, and the contour of the second annular groove 28 is substantially consistent with the contour of the first air outlet, and a second annular seal is disposed in each second annular groove 28.

[0065] Preferably, part of the first annular seal is placed in the first annular groove 27, that is, the upper surface of the first annular seal is higher than the upper surface of the support platform 2. Part of the second annular seal is placed in the second annular groove 28, that is, the upper surface of the second annular seal is higher than the upper surface of the support platform 2.

[0066] That is to say, when the pressing platform 3 squeezes the battery stack 6, the lower surface of the battery stack 6 squeezes the upper surface of the supporting platform 2. Since the upper surface of the first annular seal and the upper surface of the second seal are both higher than the upper surface of the supporting platform 2, the first annular seal and the second annular seal will also be squeezed, thereby improving the sealing of the connection between the air inlet cavity 23, the battery stack 6 and the air outlet cavity 24, which is beneficial to the airtightness detection of the battery stack 6.

[0067] In some embodiments, Figure 3 As shown, the upper surface of the support platform 2 is provided with a first protrusion 291 and a second protrusion 292, the first protrusion 291 and the second protrusion 292 are arranged at intervals in the second horizontal direction, the first protrusion 291 and the second protrusion 292 extend along the first horizontal direction, and at least a portion of the first avoidance groove 29 is formed between the first protrusion 291 and the second protrusion 292.

[0068] It can be understood that the upper surface of the support platform 2 is provided with a first protrusion 291 and a second protrusion 292, wherein a first avoidance groove 29 can be formed between the first protrusion 291 and the second protrusion 292, or, as shown in FIG. Figure 3 As shown, a first avoidance groove 29 is formed on the upper surface of the support platform 2 , and a first protruding portion 291 and a second protruding portion 292 are disposed on both sides of the first avoidance groove 29 .

[0069] That is to say, the first avoidance groove 29 is used to avoid the clamp 74 for binding the battery stack 6. When the upper surface of the supporting platform 2 is provided with a first protrusion 291 and a second protrusion 292, the battery stack with the clamp 74 is transported to the supporting platform 2. At this time, the clamp 74 is placed in the first avoidance groove 29 to realize the function of avoiding the clamp 74.

[0070] Alternatively, when the first avoidance groove 29 is provided on the upper surface of the support platform 2, and the first protrusion 291 and the second protrusion 292 are provided on the upper surface of the support platform 2, the distance between the first protrusion 291 and the second protrusion 292 is greater than the width of the first avoidance groove 29, so as to avoid the clamps 74 of different widths. Of course, when placing straps of different widths on the support platform 2, that is, when the straps are wider, the straps can be placed between the first protrusion 291 and the second protrusion 292; when the straps are narrower, the straps can be placed in the first avoidance groove 29.

[0071] In some embodiments, Figure 1 and Figure 4 As shown, the fuel cell stack assembly device of the embodiment of the present invention also includes a distance measuring component 4, which includes a detection frame 41 and a distance detector 42. The detection frame 41 is arranged on the upper surface of the workbench 121 and is adjacent to the support platform 2. The distance detector 42 is movably arranged on the detection frame 41 along the up and down directions.

[0072] Specifically, the distance detector 42 includes an infrared probe. The distance detector 42 moves in the up and down directions to detect the distance between the infrared probe and components such as membrane electrodes and bipolar plates at different heights in the battery stack 6, so as to measure the stacking position accuracy of each component of the battery stack 6.

[0073] It can be understood that the distance detector 42 can be driven by a vertical driver, that is, the vertical driver includes a driving unit, the driving unit is connected to the distance detector 42, and the vertical driver can be started to control the driving unit to move in the up and down directions, thereby driving the distance detector 42 to move in the up and down directions.

[0074] It should be noted that the vertical drive can be an electric cylinder, a pneumatic cylinder or a linear module, etc.

[0075] like Figure 5 As shown, the fuel cell stack 6 includes a first end plate 61, an internal component 62 and a second end plate 63 which are arranged in sequence from bottom to top. The first end plate 61 is provided with a fuel inlet 611, an air inlet 612 and a water inlet 613, the second end plate 63 is provided with a fuel outlet, an air outlet and a water outlet, a plurality of disc springs 60 are provided between the second end plate 63 and the internal component 62, and the first end plate 61 is provided on the upper surface of the stacking platform 71.

[0076] It is understandable that if Figure 3 and Figure 5 As shown, the air inlet chamber 23 includes a first chamber, a second chamber and a third chamber, which correspond to the fuel inlet 611, the air inlet 612 and the water inlet 613 respectively, and the air outlet chamber 24 includes a fourth chamber, a fifth chamber and a sixth chamber, which correspond to the fuel outlet, the air outlet and the water outlet respectively. Each chamber in the air inlet chamber 23 is provided with a first air inlet hole 231 and a second air inlet hole 251, for example, the first chamber is connected to the first air inlet hole 231 and the second air inlet hole 251, and the first air inlet hole 231 is connected to the first chamber and the fuel inlet 611. Similarly, each chamber in the air outlet chamber 24 is provided with a first air outlet hole 261 and a second air outlet hole 261.

[0077] In some embodiments, Figure 5 As shown, the first end plate 61 includes a first horizontal direction (such as Figure 1 The first positioning assembly 72 includes a first surface 614 and a second surface 615 relatively arranged in the front-to-back direction) and a third surface 616 and a fourth surface relatively arranged in the second horizontal direction, the first positioning assembly 72 includes a first positioning surface 7211 in contact with the first surface 614, a second positioning surface 7212 in contact with the second surface 615, a third positioning surface 7213 in contact with the third surface 616, and a fourth positioning surface 7214 in contact with the fourth surface.

[0078] Specifically, Figure 5As shown, the first surface 614 is located in front of the second surface 615, and the third surface 616 is located on the left side of the fourth surface. It can be understood that the outer peripheral surface of the first end plate 61 (i.e., the first surface 614 and the second surface 615 and the third surface 616 and the fourth surface) is in contact with the positioning surfaces on the inner side of the first positioning assembly 72 (i.e., the first positioning surface 7211, the second positioning surface 7212, the third positioning surface 7213 and the fourth positioning surface 7214), and the first positioning assembly 72 limits the movement of the first end plate 61 in the front-back and left-right directions, thereby realizing the positioning function of the first end plate 61.

[0079] In some embodiments, the fuel cell stack assembly device of the embodiment of the present invention also includes a stacking assembly 7, the stacking assembly 7 includes a stacking platform 71 and a first positioning assembly 72, the first positioning assembly 72 is detachably arranged on the upper surface of the stacking platform 71, the first positioning assembly 72 is arranged along the circumference of the first end plate 61, and the inner side of the first positioning assembly 72 is provided with a positioning surface that contacts the outer circumferential surface of the first end plate 61.

[0080] Specifically, Figure 6 and Figure 7 As shown, the stacking platform 71 is arranged on the upper surface of the supporting platform 2 and the stacking platform 71 and the supporting platform 2 are spaced apart in the front-to-back direction. The lower end of the first positioning component 72 can be detachably arranged on the upper surface of the stacking platform 71 by means of connectors such as snap-fit ​​or screws, and the extension direction of the first positioning component 72 is consistent with the up-down direction.

[0081] It can be understood that a positioning surface is provided on the inner side of the first positioning component 72, that is, when assembling the battery stack 6, the first end plate 61 can be placed on the stacking platform 71 and the outer peripheral surface of the first end plate 61 can be in contact with the inner side of the first positioning component 72, thereby realizing the positioning function of the first end plate 61.

[0082] In some embodiments, Figure 6 As shown, the first positioning assembly 72 includes a plurality of positioning blocks 721, and the plurality of positioning blocks 721 are arranged at intervals along the circumference of the first end plate 61, at least one of the plurality of positioning blocks 721 is provided with a first positioning surface 7211, at least one of the plurality of positioning blocks 721 is provided with a second positioning surface 7212, at least one of the plurality of positioning blocks 721 is provided with a third positioning surface 7213, and at least one of the plurality of positioning blocks 721 is provided with a fourth positioning surface 7214.

[0083] It is understandable that a first positioning surface 7211, a second positioning surface 7212, a third positioning surface 7213 and a fourth positioning surface 7214 may be provided in the plurality of positioning members to limit the movement of the first end plate 61 in the front-back and left-right directions. Of course, the plurality of positioning members may also be provided with a plurality of first positioning surfaces 7211, a plurality of second positioning surfaces 7212, a plurality of third positioning surfaces 7213 and a plurality of fourth positioning surfaces 7214. In other words, different forms of positioning surfaces may be provided according to the different outer peripheral surfaces of the first end plate 61 to achieve positioning of the first end plate 61.

[0084] Specifically, Figure 6 As shown, the first positioning block, the second positioning block, the third positioning block and the fourth positioning block are roughly arranged in a rectangular shape, and the inner side surface of the first positioning block (i.e., the side surface adjacent to the first end plate 61) forms a first positioning surface 7211 and a second positioning surface 7212. Similarly, the inner side surface of the second positioning block forms a third positioning surface 7213 and a second positioning surface 7212; the inner side surface of the third positioning block forms a fourth positioning surface 7214 and a second positioning surface 7212; the inner side surface of the fourth positioning block forms a fourth positioning surface 7214 and the first positioning surface 7211.

[0085] In some embodiments, Figure 6 As shown, the stacking assembly 7 also includes a second positioning assembly 73, which is detachably arranged on the upper surface of the stacking platform 71. The second positioning assembly 73 includes a plurality of positioning rods 731, and the plurality of positioning rods 731 are arranged at intervals along the circumference of the second end plate 63. The side of the positioning rod 731 adjacent to the second end plate 63 contacts the outer peripheral surface of the internal assembly 62. The outer peripheral surface of the second end plate 63 is provided with a plurality of positioning grooves 631 arranged at intervals along the circumference of the second end plate 63, and the plurality of positioning rods 731 are matched one by one in the positioning grooves 631.

[0086] Specifically, Figure 6 As shown, the lower end of the second positioning component 73 can be detachably connected to the upper surface of the stacking platform 71 by means of a connector such as a snap-on or a screw, and the extension direction of the second positioning component 73 is consistent with the up and down direction. The side of the positioning rod 731 adjacent to the second end plate 63 contacts the outer peripheral surface of the internal component 62, so as to facilitate the positioning of the internal component 62 of the battery stack 6 when assembling the battery stack 6. A plurality of positioning rods 731 are matched one by one in the positioning groove 631 to position the second end plate 63.

[0087] It can be understood that multiple positioning rods 731 are matched one by one in the positioning groove 631, so that the surface positioning of the positioning rod 731 and the second end plate 63 can be changed to point positioning, which greatly reduces the thickness of the first positioning rod and provides more avoidance space for the stacking component 7, which is beneficial to the setting and installation of other components.

[0088] That is to say, when the stacking of the battery stack 6 is completed, the first positioning assembly 72 and the second positioning assembly 73 can be removed so as to transport the battery stack 6 to the supporting platform 2 via the operating track 8 .

[0089] Optionally, a avoidance notch 732 is provided at the lower end of the positioning rod 731 . The avoidance notch 732 is located at a side of the positioning rod 731 adjacent to the first end plate 61 and is used to avoid the first end plate 61 .

[0090] In some embodiments, Figure 6 As shown, the second end plate 63 includes a fifth surface 632 and a sixth surface 633 arranged opposite to each other along the first horizontal direction, and a seventh surface 634 and an eighth surface arranged opposite to each other along the second horizontal direction. Specifically, the fifth surface 632 is located on the left side of the sixth surface 633, and the seventh surface 634 is located in front of the eighth surface.

[0091] In some embodiments, Figure 7 As shown, the stacking platform 71 includes a fifth side 711 and a sixth side 712 opposite to each other in the first horizontal direction, and a plurality of third avoidance grooves are provided on the upper surface of the stacking platform 71. The third avoidance grooves extend along the first horizontal direction and penetrate the fifth side 711 and the sixth side 712, and the plurality of third avoidance grooves are arranged at intervals along the second horizontal direction.

[0092] Specifically, the front end face of the stacking platform 71 is the fifth side face 711 , the rear end face of the stacking platform 71 is the sixth side face 712 , the extension direction of the third avoidance groove is parallel to the front-rear direction, and the plurality of third avoidance grooves are arranged at intervals along the left-right direction.

[0093] In some embodiments, Figure 5-Figure 7 As shown, the first surface 614 is provided with a plurality of first binding grooves 6141, and the second surface 615 is provided with a plurality of second binding grooves, the first binding grooves 6141 and the second binding grooves extend in the up-down direction and penetrate the upper surface and the lower surface of the first end plate 61, and the plurality of first binding grooves 6141 and the plurality of second binding grooves are arranged at intervals in the second horizontal direction. Specifically, the front end surface of the first end plate 61 is the first surface 614, the rear end surface of the first end plate 61 is the second surface 615, and the plurality of first binding grooves 6141 and the plurality of second binding grooves are arranged at intervals in the left-right direction.

[0094] The fifth surface 632 is provided with a plurality of third binding grooves 6321, and the sixth surface 633 is provided with a plurality of fourth binding grooves 6331. The third binding grooves 6321 and the fourth binding grooves 6331 extend in the up-down direction and penetrate the upper surface and the lower surface of the second end plate 63. The plurality of third binding grooves 6321 and the plurality of third binding grooves 6321 are arranged at intervals in the second horizontal direction. Specifically, the front end surface of the second end plate 63 is the fifth surface 632, the rear end surface of the second end plate 63 is the sixth surface 633, and the plurality of third binding grooves 6321 and the plurality of fourth binding grooves 6331 are arranged at intervals in the left-right direction.

[0095] Among them, multiple third binding grooves 6321 and multiple fourth binding grooves 6331 and multiple first binding grooves 6141 and multiple second binding grooves correspond one-to-one in the first horizontal direction, multiple first binding grooves 6141 and multiple third binding grooves 6321 and multiple second binding grooves and multiple fourth binding grooves 6331 correspond one-to-one in the up and down directions, and multiple first binding grooves 6141 and multiple second binding grooves both correspond one-to-one with multiple third avoidance grooves in the up and down directions.

[0096] It can be understood that when the first end plate 61 is placed on the stacking platform 71, the first positioning assembly 72 is used for positioning. At this time, the corresponding first binding groove 6141 and the second binding groove are adjacent to the corresponding third avoidance groove in the vertical direction, that is, the first binding groove 6141 and the second binding groove are located directly above the third avoidance groove. After the internal assembly 62 and the second end plate 63 of the stack 6 are stacked in sequence, the corresponding third binding groove 6321 and the fourth binding groove 6331 correspond to the corresponding third avoidance groove in the vertical direction, that is, the third binding groove 6321 and the fourth binding groove 6331 are located directly above the third avoidance groove.

[0097] In some embodiments, Figure 7 As shown, the stacking platform 71 also includes a plurality of clamps 74, and the plurality of clamps 74 are arranged at intervals along the second horizontal direction. The clamps 74 include a top plate 741, a first side plate 742, and a second side plate. The first side plate 742 and the second side plate are arranged relatively to each other in the first horizontal direction. The first side plate 742 includes a first section and a second section connected together. The first section is fitted in the first bundling groove 6141 and the third bundling groove 6321, and the first section is adjacent to the side of the battery stack 6 and contacts the internal component 62. The second section is fitted in the third avoidance groove and contacts the lower surface of the first end plate 61. The second side plate includes a third section and a fourth section connected together. The third section is fitted in the second bundling groove and the fourth bundling groove 6331, and the third section is adjacent to the side of the battery stack 6 and contacts the internal component 62. The fourth section is fitted in the third avoidance groove and contacts the lower surface of the first end plate 61. The top plate 741 contacts the upper surface of the second end plate 63, and the top plate 741 is connected between the first section and the third section.

[0098] Specifically, Figure 7 As shown, the first side plate 742 is located in front of the second side plate, the first side plate 742 and the second side plate are generally L-shaped, the lower end of the first side plate 742 forms the second end, the lower end of the second side plate forms the fourth end, and the top plate 741 is located above the first side plate 742 and the second side plate and the top plate 741 is connected to the first section and the third end.

[0099] It can be understood that when the inner side surface of the first section contacts the internal component 62, the second section extends along the front-to-back direction and toward the first end plate 61 (extends backward), and the fourth section extends along the front-to-back direction and toward the first end plate 61 (extends forward).

[0100] In some embodiments, Figure 1 and Figure 7 As shown, the fuel cell stack assembly device of the embodiment of the present invention further includes a running track 8, which extends along a first horizontal direction and is disposed on the upper surface of the workbench 121 and between the stacking platform 71 and the supporting platform 2. It can be understood that Figure 1 As shown, the running track 8 is used to transport the fuel cell stack 6 so that the fuel cell stack 6 can be moved along the running track 8 to the supporting platform 2 .

[0101] In some embodiments, the upper surface of the support platform 2 is provided with a plurality of first avoidance grooves 29 for the straps to pass through and extending along the first horizontal direction, the plurality of first avoidance grooves 29 are arranged at intervals along the second horizontal direction, the support platform 2 includes a first side surface 21 and a second side surface 22 opposite to each other in the first horizontal direction, and the first avoidance grooves 29 penetrate the first side surface 21 and the second side surface 22. There are a plurality of operating rails 8, the plurality of operating rails 8 are arranged at intervals along the second horizontal direction, and the plurality of operating rails 8 correspond one-to-one to the plurality of first avoidance grooves 29 in the first horizontal direction.

[0102] It is understandable that if Figure 3 As shown, the front side of the support platform 2 is the first side 21, the rear side of the support platform 2 is the second side 22, the extension direction of the first avoidance groove 29 is consistent with the front-to-back direction, the first avoidance groove 29 runs through the first side 21 and the second side 22 to facilitate the strap to pass through the first avoidance groove 29, and the support platform 2 is provided with multiple first avoidance grooves 29 to place multiple straps. The provision of multiple running tracks 8 is conducive to ensuring the stability of the battery stack 6 when moving the battery stack 6.

[0103] In some embodiments, Figure 1 and Figure 2As shown, the fuel cell stack assembly device of the embodiment of the present invention also includes a first linear drive component, the first linear drive component includes a first linear drive unit 9 and a moving member 94, the first linear drive unit 9 is arranged on the workbench 121, the first linear drive unit 9 is connected to the moving member 94 so as to drive the moving member 94 to move in a first horizontal direction, and the moving member 94 is suitable for being connected to or in contact with the stack 6.

[0104] Specifically, Figure 1 and Figure 2 As shown, there are two first linear drive parts 9, and the two first linear drive parts 9 are arranged at intervals in the left-right direction. At least one of the two first linear drive parts 9 is a driving member, and the other first linear drive part 9 is a follower. When the driving member drives the moving member 94 to move, it drives the follower to move to ensure the stability of the movement of the moving member 94. Of course, the two first linear drive parts 9 can both be driving members, and it is sufficient to ensure that the moving speed of the driving members is consistent.

[0105] For example, the first linear drive unit 9 includes a second driver 91, a first slide rail 92 and a first slider 93, the first slider 93 is movably arranged on the first slide rail 92 along a first horizontal direction, the second driver 91 is connected to the first slider 93 so as to drive the first slider 93 to move along the first horizontal direction, and the moving member 94 is connected to the first slider 93. In other words, the first linear drive unit 9 is a linear module.

[0106] Of course, the first linear drive unit 9 can also be an electric cylinder or a pneumatic cylinder, or other transmission mechanism that can drive the moving member 94 to move in the front-rear direction.

[0107] In some embodiments, Figure 7 As shown, the movable member 94 includes a driving body 941, a first claw 942 and a second claw 943, the first claw 942 is rotatably provided on the driving body 941 around its rotation axis between a first position and a second position, the second claw 943 is rotatably provided on the driving body 941 around its rotation axis between a third position and a fourth position, the rotation axis of the first claw 942 and the rotation axis of the second claw 943 extend in the up and down directions, wherein, when the first claw 942 is located at the first position and the second claw 943 is located at the third position, the first claw 942 and the second claw 943 clamp the battery stack 6, and when the first claw 942 is located at the second position and the second claw 943 is located at the fourth position, the first claw 942 and the second claw 943 release the battery stack 6.

[0108] Specifically, Figure 7As shown, the rotating shaft of the first clamping claw 942 and the rotating shaft of the second clamping claw 943 can be fixedly arranged on the driving body 941, so that the first clamping claw 942 and the second clamping claw 943 can rotate around their rotating shafts, and the clamping claws are driven to rotate to clamp or release the battery stack 6. Alternatively, the rotating shaft of the first clamping claw 942 and the rotating shaft of the second clamping claw 943 are rotatably arranged on the driving body 941, and the first clamping claw 942 and the second clamping claw 943 are respectively fixed on their rotating shafts, and the clamping claws are driven to rotate to clamp or release the battery stack 6.

[0109] It is understandable that when the first clamp 942 and the second clamp 943 clamp the battery stack 6, the stacking platform 71 is transported by the running track 8 to ensure the stability of the battery stack 6 on the stacking platform 71. When the stacking platform 71 moves onto the supporting platform 2, the first clamp 942 and the second clamp 943 are driven to rotate and release the battery stack 6.

[0110] In some embodiments, Figure 7 As shown, the running track 8 includes a track body and a plurality of balls 81, the plurality of balls 81 are arranged at intervals along a first horizontal direction, the balls 81 are rotatably provided on the track body around their rotation axes, the rotation axes of the balls 81 extend along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0111] Specifically, Figure 7 As shown, the track body includes a ball 81 groove, the extension direction of the ball 81 groove is consistent with the extension direction of the track body, and the ball 81 groove is used to place the ball 81.

[0112] In some embodiments, Figure 9-13 As shown, the fuel cell stack assembly device of the embodiment of the present invention also includes a binding component 5, which is movably arranged along the second horizontal direction. The binding component 5 is used to pass the binding belt through the first avoidance groove 29 and the second avoidance groove 323 and bind it to the stack 6.

[0113] It is understandable that multiple straps can be used to bundle a battery stack 6. After the bundling component 5 bundles one strap on the battery stack 6, it moves in the left and right direction to bundle other straps on the battery stack 6, so as to improve the stability of the bundling of the battery stack 6.

[0114] In some embodiments, Figure 9-13 As shown, the binding assembly 5 includes: a first pressing member 501, a first bending member 502, a second bending member 503, a first clamping member 504, a second clamping member 505, a second pressing member 506, a third pressing member 507, a third bending member 508, a fourth bending member 509 and a fourth pressing member 510 and a welding member 511.

[0115] The first pressing member 501 is movably disposed in the base 12 along the vertical direction and the second horizontal direction so as to press the binding band to the lower surface of the battery stack 6. Fig. 9 As shown, the first clamping member 501 includes a first horizontal driving part 5012 and a first vertical driving part 5013. The first vertical driving part 5013 is movably arranged on the first horizontal driving part 5012 along the left and right directions. The first clamping member 501 includes a first clamping block 5011. The first vertical driving part 5013 can drive the first clamping block 5011 to move along the up and down directions so as to press the strap to the lower surface of the battery stack 6.

[0116] The first bending member 502 and the second bending member 503 are arranged at intervals in the first horizontal direction, and the first bending member 502 and the second bending member 503 are movably arranged in the base 12 along the up-down direction and the second horizontal direction, so as to bend the two ends of the strap in the first horizontal direction upward. Fig.10 As shown, a second horizontal driving unit 5023 is also provided on the base 12, and the first bending member 502 and the second bending member 503 are both arranged on the second horizontal driving unit 5023. The second horizontal driving unit 5023 can drive the first bending member 502 and the second bending member 503 to move simultaneously in the left and right directions. The first bending member 502 includes a first bending block 5021, and the second bending member 503 includes a second bending block 5031. At least one of the first bending member 502 and the second bending member 503 is provided with a second vertical driving unit 5024. The second vertical driving unit 5024 can drive the first bending block 5021 and the second bending block 5031 to move simultaneously in the up and down directions so as to bend the two ends of the strap upward at the front and back.

[0117] Preferably, if Fig.10 As shown, it also includes a moving plate 5022, and the moving plate 5022 is arranged on the second horizontal driving part 5023, that is, the second horizontal driving part 5023 can drive the moving plate 5022 to move in the left-right direction, and the first bending member 502 and the second bending member 503 are movably arranged on the moving plate 5022 in the front-back direction. In other words, the distance between the first bending member 502 and the second bending member 503 in the front-back direction can be adjusted to be suitable for bending straps of different thicknesses. Among them, the first bending member 502 and the second bending member 503 can be moved manually, for example, a slide rail is arranged on the moving plate 5022, and a slideway matching the slide rail is arranged at the bottom of the first bending member 502 and the second bending member 503. When the first bending member 502 and the second bending member 503 are moved to an appropriate position, they can be fixed by means of clamping or the like to achieve bending straps of different thicknesses. Alternatively, the first bending member 502 and the second bending member 503 may be automatically moved, for example, the first bending member 502 and the second bending member 503 may be driven by an electric cylinder or a pneumatic cylinder.

[0118] The first clamping member 504 and the second clamping member 505 are arranged at intervals in the first horizontal direction. The first clamping member 504 is used to clamp one end of the strap in the first horizontal direction, and the second clamping member 505 is used to clamp the other end of the strap in the first horizontal direction. The first clamping member 504 and the second clamping member 505 are movably arranged on the frame 11 along the up-down direction and the second horizontal direction to tighten the strap. Specifically, Fig.11 As shown, a third horizontal driving part 5042 is provided on the pressing platform 3, and the first clamping member 504 and the second clamping member 505 are arranged on the third horizontal driving part 5042. The third horizontal driving part 5042 can drive the first clamping member 504 and the second clamping member 505 to move simultaneously in the left and right directions. The first clamping member 504 includes a first clamping block 5041, and the second clamping member 505 includes a second clamping block 5051. At least one of the first clamping member 504 and the second clamping member 505 is provided with a third vertical driving part 5043. The third vertical driving part 5043 can drive the first clamping member 504 and the second clamping member 505 to move simultaneously in the up and down directions so as to tighten the strap.

[0119] Optionally, a fourth horizontal driving part 5044 is further provided on the base 12, and the third horizontal driving part 5042 is provided on the fourth horizontal driving part 5044, and the fourth horizontal driving part 5044 is used to drive the third horizontal driving part 5042 to move in the front-to-back direction. Preferably, there are two fourth horizontal driving parts 5044 and two third horizontal driving parts 5042, one of the third horizontal driving parts 5042 is provided on one of the fourth horizontal driving parts 5044, and the other third horizontal driving part 5042 is provided on the other fourth horizontal driving part 5044, then one fourth horizontal driving part 5044 can drive the first clamping member 504 to move in the front-to-back direction, and the other fourth horizontal driving part 5044 can drive the second clamping member 505 to move in the front-to-back direction, so as to be suitable for clamping straps of different thicknesses.

[0120] The second pressing member 506 and the third pressing member 507 are arranged at intervals in the first horizontal direction, and the second pressing member 506 and the third pressing member 507 are movably arranged on the pressing platform 3 along the first horizontal direction and the second horizontal direction, so as to press the two ends of the binding band to the side of the battery stack 6. Specifically, as Fig.12As shown, a fifth horizontal driving part 5062 is provided on the pressing platform 3, and the second pressing member 506 and the third pressing member 507 are both provided on the fifth horizontal driving part 5062. The fifth horizontal driving part 5062 can drive the second pressing member 506 and the third pressing member 507 to move simultaneously in the left-right direction. The second pressing member 506 includes a second pressing block, and the third pressing member 507 includes a third pressing block 5071. A sixth horizontal driving part 5063 is provided on at least one of the second pressing member 506 and the third pressing member 507. The sixth horizontal driving part 5063 can drive the second pressing block and the third pressing block 5071 to move in the front-back direction so as to press the two ends of the binding band to the side of the battery stack 6. The sixth horizontal driving part 5063 can be one, that is, one sixth horizontal driving part 5063 drives the second pressing block and the third pressing block 5071 to move relative to each other simultaneously, or, as Fig.12 As shown, there are two sixth horizontal driving parts 5063 , one of which drives the second pressing block to move, and the other sixth horizontal driving part 5063 drives the third pressing block 5071 to move.

[0121] The third bending member 508 and the fourth bending member 509 are arranged at intervals in the first horizontal direction, and the third bending member 508 and the fourth bending member 509 are movably arranged on the pressing platform 3 along the first horizontal direction and the second horizontal direction, so as to bend the two ends of the binding belt relatively along the first horizontal direction. Fig.12 As shown, a seventh horizontal driving unit 5082 is provided on the pressing platform 3, and the third bending member 508 and the fourth bending member 509 are both provided on the seventh horizontal driving unit 5082. The seventh horizontal driving unit 5082 can drive the third bending member 508 and the fourth bending member 509 to move simultaneously in the left and right directions. The third bending member 508 includes a third bending block 5081, and the fourth bending member 509 includes a fourth bending block 5091. At least one of the third bending member 508 and the fourth bending member 509 is provided with an eighth horizontal driving unit 5083, and the eighth horizontal driving unit 5083 can drive the third bending block 5081 and the fourth bending block 5091 to move in the front-to-back direction so as to bend the two ends of the strap relative to each other in the front-to-back direction.

[0122] The fourth pressing member 510 is movably disposed on the pressing platform 3 along the vertical direction and the second horizontal direction so as to press the two ends of the binding band to the upper surface of the battery stack 6. Fig.13As shown, the lower pressure platform 3 is provided with a ninth horizontal driving part 5102, and the fourth clamping member 510 is provided on the ninth horizontal driving part 5102. The ninth horizontal driving part 5102 can drive the fourth clamping member 510 to move in the left-right direction. The fourth clamping member 510 includes a fourth clamping block 5101. The fourth clamping member 510 is provided with a fourth vertical driving part 5103. The fourth vertical driving part 5103 can drive the fourth clamping member 510 to move in the up-down direction so as to press the two ends of the strap to the upper surface of the battery stack 6. The fourth clamping block 5101 can simultaneously press the two ends of the strap, or, as shown in FIG. Fig.13 As shown, there are two fourth pressing blocks 5101, one of which can press one end of the binding belt, and the other can press the other end of the binding belt.

[0123] The welding member 511 is movably arranged on the frame 11 in the up-down direction and the second horizontal direction so as to weld the two ends of the bandage. Specifically, the pressing platform 3 is provided with a tenth horizontal driving part, the welding member 511 is arranged on the tenth horizontal driving part, the tenth horizontal driving part can drive the welding member 511 to move in the left-right direction, the welding member 511 includes a welding part 5111, and the welding member 511 is provided with a fifth vertical driving part, the fifth vertical driving part can drive the welding part 5111 to move in the up-down direction so as to weld the two ends of the bandage.

[0124] It should be noted that if Figure 8 As shown, the above-mentioned driving parts can be electric cylinders or pneumatic cylinders, and can also be linear modules.

[0125] In some embodiments, the pressing platform 3 includes a substrate 31 and a pressing head 32, the pressing head 32 is arranged below the substrate 31, the substrate 31 is movably arranged on the frame 11 along the up and down directions, the second avoidance groove 323 is arranged on the lower surface of the pressing head 32, the size of the pressing head 32 in the first horizontal direction is smaller than the size of the substrate 31, and the pressing head 32 is located in the middle position of the substrate 31 in the first horizontal direction.

[0126] Specifically, Figure 1 and Figure 2 As shown, the substrate 31 is connected to the telescopic rod of the first driver 100 so that the first driver 100 can drive the substrate 31 to move in the up and down directions. The size of the pressure head 32 in the first horizontal direction is smaller than that of the substrate 31, which is beneficial to provide avoidance space for other components.

[0127] In some embodiments, the second clamping member 506 and the third clamping member 507 are movably disposed on the substrate 31 along the first horizontal direction and the second horizontal direction, and the second clamping member 506 and the third clamping member 507 are both located below the pressure head 32, the third bending member 508 and the fourth bending member 509 are movably disposed on the substrate 31 along the first horizontal direction and the second horizontal direction, the third bending member 508 and the fourth bending member 509 can extend into the second avoidance groove 323, and the fourth clamping member 510 is movably disposed on the pressure head 32 along the up and down directions and the second horizontal direction.

[0128] It can be understood that the fifth horizontal driving part 5062 is arranged on the substrate 31, and the second clamping member 506 and the third clamping member 507 are both located below the pressure head 32, so that the two ends of the strap can be pressed against the front and rear sides of the battery stack 6 by the second clamping member 506 and the third clamping member 507, respectively, to facilitate the third bending member 508 and the fourth bending member 509 to bend the two ends of the strap.

[0129] In some embodiments, Figure 2 and Figure 3 As shown, a first through hole 1211 is provided on the upper surface of the workbench 121, and a second through hole 201, a third through hole 202 and a fourth through hole 203 are provided on the upper surface of the support platform 2 which are connected to the first through hole 1211. Each of the second through hole 201, the third through hole 202 and the fourth through hole 203 passes through the bottom wall surface of the first avoidance groove 29, the third through hole 202 and the fourth through hole 203 are arranged at intervals in the first horizontal direction, and the second through hole 201 is located between the third through hole 202 and the fourth through hole 203. The first clamping member 501 can pass through the first through hole 1211 and the second through hole 201, the first bending member 502 can pass through the first through hole 1211 and the third through hole 202, and the second bending member 503 can pass through the first through hole 1211 and the fourth through hole 203.

[0130] It can be understood that the second through hole is connected to the first through hole 1211, so that the first pressing member 501 can pass through the first through hole 1211 and the second through hole 201, wherein the second through hole 201 can be one, that is, the plurality of first avoidance grooves 29 are connected to the second through hole 201, or the second communicating hole is multiple, such as Figure 2 and Figure 3 As shown, the plurality of second through holes 202 and the plurality of first avoidance grooves 29 correspond one to one. Similarly, the number of the third through hole 202 and the number of the fourth through hole 203 may also be one or more.

[0131] In some embodiments, Figure 8As shown, the substrate 31 is provided with a fifth through hole 311 and a sixth through hole 312, and the fifth through hole 311 and the sixth through hole 312 are arranged at intervals in the first horizontal direction, the pressure head 32 is located between the fifth through hole 311 and the sixth through hole 312, the first clamping member 504 can pass through the fifth through hole 311, and the second clamping member 505 can pass through the sixth through hole 312.

[0132] It is understandable that the fifth through hole 311 and the sixth through hole 312 may be one, and the plurality of second avoidance grooves 323 are all connected to the fifth through hole 311 and the sixth through hole 312, so that the first clamping member 504 passes through the fifth through hole 311 and the second clamping member 505 passes through the sixth through hole 312, thereby achieving the function of tensioning the strap. Figure 8 As shown, there may be a plurality of fifth through holes 311 and a plurality of sixth through holes 312 , and the plurality of fifth through holes 311 correspond one-to-one to the plurality of second avoidance grooves 323 , and the plurality of sixth through holes 312 correspond one-to-one to the plurality of second avoidance grooves 323 .

[0133] In some embodiments, Figure 8 As shown, the pressure head 32 includes a cavity 321 that passes through from top to bottom, the second avoidance groove 323 is connected to the cavity 321, and the fourth clamping member 510 is movably arranged on the inner wall of the cavity 321 along the up and down directions and the second horizontal direction, and the fourth clamping member 510 can pass through the second avoidance groove 323.

[0134] It can be understood that the ninth horizontal driving part 5102 is arranged on the inner wall of the cavity 321, and the length distance of the cavity 321 in the left and right direction is greater than the distance of the battery stack 6 in the left and right direction, so that when the ninth horizontal driving part 5102 drives the fourth clamping member 510 to clamp the two ends of the strap, the fourth clamping member 510 can clamp multiple straps on the battery stack 6 in sequence.

[0135] In some embodiments, Figure 8 As shown, the substrate 31 is provided with a seventh through hole 322 , which is located between the fifth through hole 311 and the sixth through hole 312 and communicates with the cavity 321 , and the welding piece 511 can pass through the seventh through hole 322 and the cavity 321 .

[0136] It can be understood that the seventh through hole 322 is connected to the cavity 321 to form a through hole that passes through the pressing platform 3 in the up and down directions. When the fourth clamping member 510 clamps the two ends of the strap, the welding member 511 can use the seventh through hole 322 and the cavity 321 to weld the clamped strap.

[0137] The following describes a fuel cell stack assembly method according to an embodiment of the present invention. It should be noted that the fuel cell stack assembly method according to an embodiment of the present invention is implemented by the fuel cell stack assembly device according to the above embodiment.

[0138] The fuel cell stack assembly method according to the embodiment of the present invention comprises the following steps:

[0139] Assembling a battery stack, wherein the first end plate, the internal component, the disc spring and the second end plate are assembled in sequence from bottom to top to form a battery stack;

[0140] Compress the battery stack;

[0141] Bundle the battery stack.

[0142] In some embodiments, after the fuel cell stack is bundled, and / or after the fuel cell stack is compressed and before the fuel cell stack is bundled, the air tightness of the fuel cell stack is tested.

[0143] That is, the air tightness of the battery stack can be tested after bundling the battery stack and after compacting the battery stack and before bundling, or the air tightness of the battery stack can be tested after bundling the battery stack, or the air tightness of the battery stack can be tested after compacting the battery stack and before bundling the battery stack. Preferably, the air tightness test of the battery stack is performed after compacting the battery stack and before bundling the battery stack.

[0144] In some embodiments, after bundling the fuel cell stack, and / or after compacting the fuel cell stack and before bundling the fuel cell stack, the assembly accuracy of the fuel cell stack is detected.

[0145] That is, after bundling the battery stack and after compacting the battery stack and before bundling, the assembly accuracy of the battery stack can be tested, or the air tightness of the battery stack can be tested after bundling the battery stack, or the assembly accuracy of the battery stack can be tested after compacting the battery stack and before bundling the battery stack. Preferably, the assembly accuracy of the battery stack is tested after compacting the battery stack and before bundling the battery stack.

[0146] In some embodiments, the step of bundling the battery stack includes:

[0147] A binding belt is arranged below the battery stack, and the binding belt is pressed to the lower surface of the battery stack by a first pressing member;

[0148] Using the first bending piece and the second bending piece to bend the two ends of the binding strap upwards;

[0149] Clamp the strap with the first clamping member and the second clamping member, and move the first clamping member and the second clamping member upward to tighten the strap;

[0150] Using the second pressing member and the third pressing member to press the binding belt to the side of the battery stack;

[0151] Using the third bending member and the fourth bending member to relatively bend the two ends of the binding strap along the first horizontal direction;

[0152] Using a fourth pressing member to press the binding belt onto the upper surface of the battery stack;

[0153] Solder both ends of the tie wrap.

[0154] In some embodiments, the fuel cell stack assembly method of the embodiments of the present invention pre-treats the binding tape before pressing the fuel cell stack.

[0155] It should be noted that the strapping is packed into rolls before pre-processing.

[0156] That is to say, the fuel cell stack assembly method of the embodiment of the present invention uses a strap leveling and cutting device to inspect, level and cut the straps. The straps can be insulated from the stack by various methods such as sleeves of insulating sleeves or insulating baffles, thereby ensuring the flatness, length and insulation performance of the straps.

[0157] In addition, the support platform is a replaceable tool, that is, when the width, spacing and number of the straps are adjusted, or when the size of the first end plate, the size, shape and position of the air inlet cavity and the air outlet cavity are adjusted, the support platform can be replaced to match straps or first end plates of different specifications. Similarly, the pressing platform is also a replaceable tool.

[0158] In some embodiments, the fuel cell stack assembly method of the embodiment of the present invention detects the fuel cell stack after bundling the fuel cell stack.

[0159] For unqualified battery stacks, the binding bands are cut off using a disassembly device, so that the battery stack can be repaired and reassembled. The disassembly device can also be used to disassemble the repaired battery stack.

[0160] That is to say, the fuel cell stack assembly device of the above embodiment is used in conjunction with the disassembly device.

[0161] That is, the fuel cell stack assembly device and the disassembly device of the above-mentioned embodiment constitute an integrated assembly and disassembly type fuel cell stack assembly equipment.

[0162] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0163] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0164] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0165] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0166] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0167] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A fuel cell stack assembly device, characterized in that: include: A bracket, the bracket comprising a base and a frame body, the base comprising a workbench, the frame body being connected to the workbench and located above the workbench; A support platform, the support platform is arranged on the upper surface of the workbench, the support platform includes an air inlet cavity and an air outlet cavity, the upper surface of the support platform is provided with a first air inlet hole communicating with the air inlet cavity and a first air outlet hole communicating with the air outlet cavity, the support platform is provided with a second air inlet hole communicating with the air inlet cavity and a second air outlet hole communicating with the air outlet cavity, the upper surface of the support platform is used to place a battery stack, wherein when the detection gas is introduced, the second air outlet hole is in a closed state; and A pressing platform, the pressing platform is located above the supporting platform and is movably arranged on the frame in an up-down direction, and the pressing platform is used to press the battery stack; The upper surface of the support platform is provided with a first annular groove and a second annular groove, the first annular groove surrounds the first air inlet hole, the second annular groove surrounds the first air outlet hole, a first annular seal is provided in the first annular groove, and a second annular seal is provided in the second annular groove; It also includes a distance measuring component, the distance measuring component includes a detection frame and a distance detector, the detection frame is arranged on the upper surface of the workbench and is arranged adjacent to the support platform, and the distance detector is movably arranged on the detection frame along the up and down direction; It also includes a binding assembly, wherein the upper surface of the support platform is provided with a plurality of first avoidance grooves for the straps to pass through and extending along the first horizontal direction, and the plurality of the first avoidance grooves are arranged at intervals along the second horizontal direction; the lower surface of the pressing platform is provided with a plurality of second avoidance grooves for the straps to pass through and extending along the first horizontal direction, and the plurality of the second avoidance grooves are arranged at intervals along the second horizontal direction, and the plurality of the first avoidance grooves correspond to the plurality of the second avoidance grooves in a one-to-one manner in the up and down direction, and the first horizontal direction is perpendicular to the second horizontal direction, and the binding assembly is used to pass the straps through the first avoidance grooves and the second avoidance grooves and bind them to the battery stack; The bundled components include: a first pressing member, the first pressing member being movably disposed in the base along the up-down direction and the second horizontal direction so as to press the binding belt to the lower surface of the battery stack; a first bending member and a second bending member, the first bending member and the second bending member are arranged at intervals in the first horizontal direction, and the first bending member and the second bending member are movably arranged in the base along the up-down direction and the second horizontal direction so as to bend the two ends of the binding strap in the first horizontal direction upward; a first clamping member and a second clamping member, the first clamping member and the second clamping member are arranged at intervals in the first horizontal direction, the first clamping member is used to clamp one end of the strap in the first horizontal direction, and the second clamping member is used to clamp the other end of the strap in the first horizontal direction, and the first clamping member and the second clamping member are movably arranged on the frame along the up-down direction and the second horizontal direction so as to tighten the strap; a second pressing member and a third pressing member, wherein the second pressing member and the third pressing member are spaced apart in the first horizontal direction, and the second pressing member and the third pressing member are movably arranged on the pressing platform along the first horizontal direction and the second horizontal direction, so as to press the two ends of the binding band to the side surfaces of the battery stack; a third bending member and a fourth bending member, the third bending member and the fourth bending member are arranged at intervals in the first horizontal direction, and the third bending member and the fourth bending member are movably arranged on the pressing platform along the first horizontal direction and the second horizontal direction so as to relatively bend the two ends of the binding band along the first horizontal direction; a fourth pressing member, the fourth pressing member being movably disposed on the pressing platform along the up-down direction and the second horizontal direction so as to press the two ends of the binding band to the upper surface of the battery stack; and A welding piece is movably arranged on the frame along the up-down direction and the second horizontal direction so as to weld the two ends of the binding strap.

2. The fuel cell stack assembly device according to claim 1, characterized in that: The first bending member and the second bending member are movably arranged in the base along the first horizontal direction, and the first clamping member and the second clamping member are movably arranged on the frame along the first horizontal direction.

3. A fuel cell stack assembly method, using the fuel cell stack assembly device according to any one of claims 1 to 2, characterized in that: The following steps are involved: Assembling a battery stack, wherein the first end plate, the internal component, the disc spring and the second end plate are assembled in sequence from bottom to top to form the battery stack; Compressing the battery stack; The battery stack is bundled.

4. The fuel cell stack assembly method according to claim 3, characterized in that: After bundling the fuel cell stack, and / or after pressing the fuel cell stack and before bundling the fuel cell stack, the air tightness of the fuel cell stack is detected.

5. The fuel cell stack assembly method according to claim 3, characterized in that: After bundling the battery stack, and / or after compacting the battery stack and before bundling the battery stack, the assembly accuracy of the battery stack is detected.

6. The fuel cell stack assembly method according to any one of claims 3 to 5, characterized in that: The bundling of the battery stack comprises: A binding belt is arranged below the battery stack, and the binding belt is pressed to the lower surface of the battery stack by a first pressing member; Using a first bending piece and a second bending piece to bend the two ends of the binding strap upwards; Clamp the binding strap with a first clamping member and a second clamping member, and move the first clamping member and the second clamping member upward to tighten the binding strap; Using a second pressing member and a third pressing member to press the binding band to the side of the battery stack; Using a third bending member and a fourth bending member to relatively bend the two ends of the binding strap along a first horizontal direction; Using a fourth pressing member to press the binding belt onto the upper surface of the battery stack; Solder both ends of the tie strap.

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