A fuel cell stack assembly tooling and a fuel cell stack assembly method

Abstract

The present invention provides a fuel cell stack assembly tooling and a fuel cell stack assembly method. The tooling includes: a base; a plurality of fixed limiting mechanisms are arranged on the base; two movable limiting mechanisms are arranged on the base at intervals, and each movable limiting mechanism is arranged on the base in a movable manner; a product lifting mechanism is arranged between the two movable limiting mechanisms and is arranged above the base in a position-adjustable manner along the height direction. When stacking and assembling the fuel cell stack in the present invention, the two movable limiting mechanisms are adjusted to the limiting working positions, and the fixed limiting mechanisms and the two movable limiting mechanisms enclose to form a tooling inner cavity, so that the fuel cell stack can be limited in the tooling inner cavity. When taking out the stacked and assembled fuel cell stack, the two movable limiting mechanisms are adjusted to the picking and placing working positions to open the tooling inner cavity for taking out the stacked fuel cell stack.

Description

Technical Field

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

[0002] With the rapid development of fuel cell application technologies, the application fields of fuel cell power modules have gradually expanded to electric vehicles, energy storage, communication, and mining. Currently, according to the established technical route, multiple single cell modules need to be arranged and combined in series or parallel to be processed into a single battery module unit, and in this process, steel strip binding is required.

[0003] Currently, the fuel cell stack includes upper and lower end plates, insulating plates, current collector plates, bipolar plates, and membrane electrode assemblies. The main structure is an alternating stack of bipolar plates and membrane electrode assemblies. As the demand for the power of the fuel cell stack increases, the number of bipolar plates and membrane electrode assemblies also increases, which poses higher requirements for the stacking efficiency and accuracy of the fuel cell stack. Currently, during the fuel cell stack stacking process, the fuel cell stack assembly station is placed horizontally, and the position accuracy in the front, back, left, and right directions cannot be guaranteed during stacking, and there are also problems such as inconvenient picking and placing of the fuel cell stack.

[0004] Chinese Publication No. CN 113745621 A discloses a fuel cell stack assembly device, which further includes a frame; the lifting and stacking mechanism includes a lifting device and a stacking device. The stacking device includes a tooling bottom plate, adjustable components, fuel cell stack positioning rods, tooling elevation blocks, fuel cell stack lower end plates, fuel cell stack upper end plates, and working positioning pressure plates. The tooling bottom plate is rectangular, and adjustable components are installed on three sides of the tooling bottom plate. At least one fuel cell stack positioning rod is installed on the upper side of each adjustable component. The remaining side of the tooling bottom plate is fixedly installed with fuel cell stack positioning rods. Tooling elevation blocks are installed within each fuel cell stack positioning rod on the bottom plate of the tooling bottom plate. A fuel cell stack lower end plate and a fuel cell stack upper end plate are movably installed within each fuel cell stack positioning rod. The top of each fuel cell stack positioning rod is movably connected to the working positioning pressure plate, and the lifting device cooperates with the fuel cell stack lower end plate. The stacking device is used to accommodate materials. Multiple fuel cell stack positioning rods are combined to assist in positioning the materials and prevent the materials from shifting. After the entire stacking device receives the materials, the fuel cell stack upper end plate can be placed in, and finally, the working positioning pressure plate is assembled and pressed against the end of the fuel cell stack positioning rod to fix the materials, so as to be moved to the fuel cell stack press for pressing. The adjustable component includes an adjustment bottom plate, an adjustment moving plate, and a fine adjustment moving seat. The adjustment moving plate is longitudinally slidably connected to the adjustment bottom plate, and an adjustable bolt is provided on the upper side of the adjustment moving plate to connect and position with the bottom plate. An adjustable positioning member is provided on the side of the bottom plate, and the adjustable positioning member is in positioning cooperation with the notch provided on the adjustment moving plate. At least one fine adjustment moving seat is installed on the adjustment moving plate, and a fuel cell stack positioning rod is fixedly installed corresponding to the fine adjustment moving seat. The bottom of the fine adjustment moving seat is horizontally slidably connected to the adjustment moving plate, and an adjustable handle is provided on the fine adjustment moving seat. It can be adjusted longitudinally and horizontally, which is convenient for receiving materials of different specifications and has high applicability.

[0005] In the fuel cell stack assembly device provided in the above technical solution, the adjustment moving plate is longitudinally slid, and the fine adjustment moving seat provided on the adjustment moving plate is used for horizontal adjustment to realize the horizontal and vertical adjustment of the fuel cell stack positioning rods to receive materials of different specifications. However, this adjustment component is only used to adjust the horizontal and vertical positions of the fuel cell stack positioning rods to adapt to different specifications of materials. When taking and placing, the fuel cell stack can only be lifted upward until the height of the fuel cell stack is higher than the fuel cell stack positioning rods before the fuel cell stack can be taken out, resulting in inconvenient taking and placing of the fuel cell stack. Summary of the Invention

[0006] In view of this, the present invention proposes a fuel cell stack loading tooling and a fuel cell stack loading method, aiming to solve the problem of inconvenient taking and placing of the fuel cell stack in the existing fuel cell stack loading tooling.

[0007] On the one hand, the present invention provides a fuel cell stack assembly tooling, which includes: a base; a plurality of fixed limiting mechanisms arranged on the base for limiting the first side of the fuel cell stack; two movable limiting mechanisms arranged on the base at intervals, and each of the movable limiting mechanisms is arranged on the base in a movable manner. During the stacking and assembly of the fuel cell stack, the two movable limiting mechanisms are adjusted to the limiting station, and the fixed limiting mechanisms and the two movable limiting mechanisms enclose a tooling inner cavity so that the fuel cell stack can be limited within the tooling inner cavity; when removing the stacked and assembled fuel cell stack, the two movable limiting mechanisms are adjusted to the picking and placing station to open the tooling inner cavity for removing the stacked fuel cell stack; a product lifting mechanism arranged between the two movable limiting mechanisms and arranged above the base in a height-adjustable manner for supporting the fuel cell stack in the tooling inner cavity, capable of lifting to a corresponding height, and gradually descending during the process of layer-by-layer stacking of the fuel cell stack to lower and stack each layer of single cells of the fuel cell stack layer by layer.

[0008] Further, for the above fuel cell stack assembly tooling, the movable limiting mechanism includes: a fixed support member; a draw-type limiting member slidably connected to the fixed support member along a second preset direction, used to be pushed to the draw limiting station to limit the end side of the fuel cell stack, and can also be withdrawn to the draw picking and placing station; wherein, the end side of the fuel cell stack is perpendicular to the side of the fuel cell stack; a rotary limiting member rotatably connected to the fixed support member, used to rotate to the rotary limiting station to limit the second side of the fuel cell stack, and can also rotate to the rotary picking and placing station to translate and remove the stacked and assembled fuel cell stack.

[0009] Further, for the above fuel cell stack assembly tooling, a first draw lock is provided on the draw-type limiting member for locking the draw-type limiting member to the fixed support member when the draw-type limiting member is pushed to the draw limiting station and / or withdrawn to the draw picking and placing station; and / or, a plurality of second draw locks are provided on the draw-type limiting member for locking the draw-type limiting member to the fixed support member when the draw-type limiting member is pushed to the draw limiting station.

[0010] Further, for the above-mentioned fuel cell stack loading tooling, the first draw locking fastener includes: a draw fixing block provided on the fixed support member; a draw locking block provided on the draw-type limiting member; and a draw locking insertion pin that is inserted into and removed from the draw fixing block and the draw locking block in a pluggable manner, and is used to lock the draw locking block to the draw fixing block when the draw-type limiting member is drawn to the draw limit working position or the draw pick-up and placement working position.

[0011] Further, for the above-mentioned fuel cell stack loading tooling, the draw fixing block is provided with a draw locking hole, and the draw locking block is provided with a limit locking hole and a pick-up and placement locking hole, which correspond to the draw limit working position and the draw pick-up and placement working position respectively; when the draw-type limiting member is pushed to the draw limit working position, the draw locking insertion pin is inserted into the draw locking hole and the pick-up and placement locking hole; when the draw-type limiting member is drawn back to the draw pick-up and placement working position, the draw locking insertion pin is inserted into the draw locking hole and the pick-up and placement locking hole.

[0012] Further, for the above-mentioned fuel cell stack loading tooling, the product lifting mechanism includes: a lifting plate for supporting the fuel cell stack; two positioning pin sleeves and two fixed seats, which are respectively arranged at the four corners of the bottom of the lifting plate, and are used to contact and lift the two positioning pin sleeves and the two fixed seats through a lifting driving mechanism placed below to lift the lifting plate; wherein, the positioning pin sleeve is adapted to the positioning pin on the lifting driving mechanism.

[0013] Further, for the above-mentioned fuel cell stack loading tooling, the fixed limiting mechanism includes: a fixed seat; a limiting support plate provided on the fixed seat; a limiting baffle plate, which is installed on the limiting support plate in a position-adjustable manner, and is used to adjust the relative position relationship between the limiting baffle plate and the limiting support plate to adjust the perpendicularity between the limiting baffle plate and the base, so as to ensure the stacking accuracy of the fuel cell stack.

[0014] Further, for the above-mentioned fuel cell stack loading tooling, the limiting baffle plate and the limiting support plate are connected by at least two position adjusting members arranged at intervals along the length direction of the limiting support plate; the limiting support plate is provided with waist-shaped holes for adjusting the positions of the position adjusting members, and the limiting baffle plate is provided with mounting holes, and the position adjusting members pass through the waist-shaped holes and are connected to the mounting holes, and are used to adjust the relative connection position between the limiting baffle plate and the limiting support plate and realize the fastening between the limiting baffle plate and the limiting support plate.

[0015] Furthermore, in the above fuel cell stack assembly tooling, a rotary locking member is provided on the rotary limiting member for locking the rotary limiting member to the base when the rotary limiting member rotates to the rotary limiting working position.

[0016] On the other hand, the present invention also proposes a fuel cell stack assembly method, which includes the following steps: adjusting both movable limiting mechanisms to the limiting working positions, and the fixed limiting mechanism and the two movable limiting mechanisms enclose to form a tooling inner cavity; controlling the product lifting mechanism to rise to a preset stacking position; hoisting the bottom plate structure or single cell of the fuel cell stack onto the product lifting mechanism, controlling the product lifting mechanism to gradually descend, and installing each single cell layer by layer to complete the stacking and installation of the fuel cell stack; wherein, during the stacking and installation of each single cell, the descending height of the product lifting mechanism each time is the thickness of the single cell.

[0017] The fuel cell stack assembly tooling and the fuel cell stack assembly method provided by the present invention limit the first side of the fuel cell stack through the fixed limiting mechanism; through two movable limiting mechanisms, when stacking and assembling the fuel cell stack, the two movable limiting mechanisms are adjusted to the limiting working positions, and the fixed limiting mechanism and the two movable limiting mechanisms enclose to form a tooling inner cavity, so that the fuel cell stack can be limited into the tooling inner cavity. The first side of the fuel cell stack is limited by the fixed limiting mechanism, and the second side and the two end sides of the fuel cell stack are limited by the movable limiting mechanisms. When taking out the stacked fuel cell stack, the two movable limiting mechanisms are adjusted to the picking and placing working positions to open the tooling inner cavity for taking out the stacked fuel cell stack. That is to say, the overall strength of the stack tooling is enhanced through the cavity structure, and the opening and closing structure of the movable limiting mechanism enables one side baffle of the tooling to be opened, facilitating the picking and placing of the fuel cell stack, and the tooling can be restored conveniently, solving the problem that the existing tooling for assembling the fuel cell stack has inconvenient picking and placing of the fuel cell stack.

[0018] In particular, through a movable limiting mechanism with two workstations, during the stacking and assembly of a fuel cell stack, it can be adjusted to the limiting workstation. The fixed limiting mechanism and the two movable limiting mechanisms enclose a tooling inner cavity that is adapted to the contour of the fuel cell stack, enabling the fuel cell stack to be limited within the tooling inner cavity. That is, the first side of the fuel cell stack is limited by the fixed limiting mechanism, and the second side and two end sides of the fuel cell stack are limited by the movable limiting mechanisms to ensure the position accuracy of the fuel cell stack during stacking; when removing the stacked fuel cell stack for assembly, the two movable limiting mechanisms can also be adjusted to the pick-and-place workstation, and the tooling inner cavity is opened, that is, the opposite side of the fixed limiting mechanism is opened, so that the fuel cell stack can be translated out between the two movable limiting mechanisms. Compared with the adjustable component arrangement in the prior art, the purpose of the adjustable component arrangement is to adjust the horizontal and vertical positions of the stack positioning rod so that the position of the stack positioning rod is adapted to the position of the stack, and it is fixed by bolts after adjustment. During the subsequent assembly of stacks of unified specifications, no adjustment is required. Therefore, the purpose of the adjustable component disclosed in the prior art is to adapt to different specifications of materials, which is different from the movable limiting mechanism in this application that is adjusted for pick-and-place and limiting. Therefore, their structures and purposes are completely different. At the same time, the adjustment of the movable limiting mechanism in this device can make one side baffle of the tooling closed to achieve the limiting of the stack, and can also be opened to facilitate the pick-and-place of the stack. The tooling can be restored conveniently, solving the problem that the existing tooling for stacking fuel cell stacks has inconvenient pick-and-place of the stack. This device has a simple mechanical structure and low cost, greatly reducing the cost of stacking and pick-and-place, and also greatly reducing the complexity of mechanical structure installation and the complexity of later maintenance. At the same time, the stacking stability is high, ensuring the stacking accuracy of the product.

[0019] Furthermore, the fixed limiting mechanism, the draw limiting body, and / or the rotary limiting body all adopt an adjustable structure. The tooling gap can be adjusted by adjusting the baffle, reducing the debugging difficulty and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy to have a situation where the inner cavity size cannot be controlled due to the excessive stacking height of the product, and the lateral compression resistance is high and it is not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the tooling for stacking a fuel cell stack provided by an embodiment of the present invention;

[0022] Figure 2 is another directional structural diagram of the tooling for stacking a fuel cell stack provided by an embodiment of the present invention;

[0023] Figure 3 Another structural schematic diagram of the fuel cell stack assembly tooling provided by the embodiment of the present invention;

[0024] Figure 4 Another structural schematic diagram of the fuel cell stack assembly tooling provided by the embodiment of the present invention;

[0025] Figure 5 Top view of the fuel cell stack assembly tooling provided by the embodiment of the present invention;

[0026] Figure 6 Structural schematic diagram of the movable limit mechanism provided by the embodiment of the present invention;

[0027] Figure 7 Another structural schematic diagram of the movable limit mechanism provided by the embodiment of the present invention;

[0028] Figure 8 Another structural schematic diagram of the movable limit mechanism provided by the embodiment of the present invention;

[0029] Figure 9 Another structural schematic diagram of the movable limit mechanism provided by the embodiment of the present invention;

[0030] Figure 10 Another structural schematic diagram of the movable limit mechanism provided by the embodiment of the present invention;

[0031] Figure 11 Front view of the movable limit mechanism provided by the embodiment of the present invention;

[0032] Figure 12 Top view of the movable limit mechanism provided by the embodiment of the present invention;

[0033] Figure 13 Structural schematic diagram of the product lifting mechanism provided by the embodiment of the present invention;

[0034] Figure 14 Another directional structural schematic diagram of the product lifting mechanism provided by the embodiment of the present invention;

[0035] Figure 15 Flow schematic diagram of the fuel cell stack assembly method provided by the embodiment of the present invention. Detailed implementation manners

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] Tooling Embodiment:

[0038] In this embodiment, the fuel cell stack includes: a plurality of single cells; wherein, the plurality of single cells are stacked in series. Of course, end plates, current collectors, insulating plates and other plate structures can also be provided on the upper and lower sides of the uppermost and lowermost single cells.

[0039] See Figures 1 to 4 , which shows the preferred structure of the fuel cell stack assembly tooling provided by the embodiment of the present invention. As shown in the figure, the fuel cell stack assembly tooling includes: a base 1, a plurality of fixed limiting mechanisms 2, two movable limiting mechanisms 3, and a product lifting mechanism 4; wherein,

[0040] A plurality of fixed limiting mechanisms 2 are arranged on the base 1 and are used for limiting the first side of the fuel cell stack (not shown in the figure).

[0041] Specifically, the base 1 plays a role of bottom support. Each fixed limiting mechanism 2 can be vertically arranged on the base 1, and the bottom is fixedly installed on the base 1. It can be fixedly installed on the base 1 through connecting pieces such as bolts, or can be installed and fixed in other ways. In this embodiment, no limitation is made on it. The fixed limiting mechanism 2 can be one, which can limit the middle position of the first side of the fuel cell stack, or can limit other positions of the first side of the fuel cell stack. In this embodiment, no limitation is made on it; of course, the fixed limiting mechanism 2 can also be multiple. For example, in this embodiment, two are taken as an example for illustration. The two fixed limiting mechanisms 2 are arranged side by side along the first preset direction (such as Figure 5 the horizontal direction shown, that is, the A-A direction), and the bottom ends of the two fixed limiting mechanisms 2 can be clamped into the corresponding card slots on the upper side of the product lifting mechanism 4 (relative to Figure 5 the position shown) to limit different positions of the first side of the fuel cell stack. Among them, the fuel cell stack is placed on the product lifting mechanism 4. The first side of the fuel cell stack corresponds to and is flush with the upper side of the product lifting mechanism 4, the second side of the fuel cell stack corresponds to and is flush with the lower side of the product lifting mechanism 4, and the two end sides of the fuel cell stack respectively correspond to and are flush with the left and right end sides of the product lifting mechanism 4.

[0042] Two movable limiting mechanisms 3 are arranged on the base 1 at intervals, and each movable limiting mechanism 3 is arranged on the base 1 in a movable manner. Each movable limiting mechanism 3 has a picking and placing station and a limiting station. When stacking and assembling a fuel cell stack, the two movable limiting mechanisms 3 are adjusted to the limiting stations, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose a tooling inner cavity so that the fuel cell stack can be limited within the tooling inner cavity; when taking out the stacked fuel cell stack for assembly, the two movable limiting mechanisms 3 are adjusted to the picking and placing stations to open the tooling inner cavity for taking out the stacked fuel cell stack.

[0043] Specifically, the two movable limiting mechanisms 3 are both vertically arranged. The two movable limiting mechanisms 3 are arranged on one side (such as Figure 5 the lower side shown) of the two fixed limiting mechanisms 2 at intervals, and the two movable limiting mechanisms 3 can both move relative to the base 1 and can have two states, namely the limiting state and the picking and placing state. When stacking and assembling a fuel cell stack, the two movable limiting mechanisms 3 are adjusted to the limiting stations and switch to the limiting state. The fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose a tooling inner cavity, that is, a square tooling inner cavity. The first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and the two end sides of the fuel cell stack are limited by the two movable limiting mechanisms 3. In particular, one of the movable limiting mechanisms 3, such as the left movable limiting mechanism 3, can be used to limit the second side and the left end side of the fuel cell stack, and the other movable limiting mechanism 3, such as the right movable limiting mechanism 3, can be used to limit the second side and the right end side of the fuel cell stack to achieve circumferential limiting of the fuel cell stack so that the fuel cell stack can be limited within the tooling inner cavity. When taking out the stacked fuel cell stack for assembly, the two movable limiting mechanisms 3 are adjusted to the picking and placing stations and switch to the picking and placing state. The two movable limiting mechanisms 3 can move to the left and right sides of the product lifting mechanism 4 and can avoid the positions where the fuel cell stack moves downward, that is, open the tooling inner cavity for taking out the stacked fuel cell stack. Of course, when installing the bottom plate structure of the fuel cell stack, that is, when installing the plate structure that supports the bottoms of multiple single cells in the fuel cell stack, the two movable limiting mechanisms 3 can also switch to the picking and placing state. By hoisting the bottom plate structure and translating it upward between the two movable limiting mechanisms 3, the bottom plate structure can be translated to directly above the product lifting mechanism 4 and lowered onto the product lifting mechanism 4 for continued stacking operations of subsequent single cells. Of course, the bottom plate structure can also be directly hoisted to directly above the product lifting mechanism 4 and lowered onto the product lifting mechanism 4.

[0044] The product lifting mechanism 4 is arranged between two movable limiting mechanisms 3. Moreover, the product lifting mechanism 4 is arranged above the base 1 in a manner that its position can be adjusted in the height direction. It is used to support the fuel cell stack in the inner cavity of the tooling, and can be lifted to the corresponding height, and gradually descend during the process of stacking the fuel cell stack layer by layer, so as to lower and stack each layer of single cells of the fuel cell stack layer by layer.

[0045] Specifically, the product lifting mechanism 4 is arranged at the inner cavity of the tooling and on the base 1. The product lifting mechanism 4 is arranged above the base 1 in a manner that its position can be adjusted in the height direction, and can perform lifting and lowering movements under the driving action of a lifting driving mechanism (not shown in the figure). Under the driving action of the lifting driving mechanism, the product lifting mechanism 4 can rise to a preset stacking position, so as to install the fuel cell stack by means such as hoisting. For example, hoist the bottom plate structure onto the product lifting mechanism 4, or hoist a layer of single cells onto the product lifting mechanism 4 that has already installed the bottom plate structure. The circumferential limiting is carried out through a plurality of fixed limiting mechanisms 2 and two movable limiting mechanisms 3 to ensure the limiting accuracy. Under the driving action of the lifting driving mechanism, the product lifting mechanism 4 descends by the thickness of a single cell to install the next single cell. The hoisting and stacking of each single cell are carried out layer by layer in the above manner. After finally descending a certain height, hoist the top plate structure onto the topmost single cell to complete the stacking of the fuel cell stack. Among them, the preset stacking position can be determined according to the actual situation, and no limitation is made to it in this embodiment.

[0046] In this embodiment, the base 1 may be provided with a lifting lug 11 for hoisting the stacking tooling to the installation position of the fuel cell stack.

[0047] Continue to refer to Figure 2 、 Figure 4 and Figure 5 As shown in, the fixed limiting mechanism 2 includes: a fixed seat 21, a limiting support plate 22 and a limiting baffle 23; among them, the limiting support plate 22 is arranged on the fixed seat 21; the limiting baffle 23 is installed on the limiting support plate 22 in a manner that its position can be adjusted, so as to adjust the relative position relationship between the limiting baffle 23 and the limiting support plate 22, and to adjust the perpendicularity between the limiting baffle 23 and the fixed seat 21 to ensure the stacking accuracy of the fuel cell stack.

[0048] Specifically, the fixed seat 21 can be fixedly installed on the base 1 through connecting parts such as bolts. The limiting support plate 22 is vertically arranged and perpendicular to the first preset direction, and the bottom can be vertically installed on the fixed seat 21 through connecting parts such as bolts. In this embodiment, a limiting groove may be provided at the limiting end (such as the lower left end shown in Figure 5 of the limiting support plate 22, and the depth of the limiting groove is the same as the thickness of the limiting baffle 23 (such asFigure 5 It is adapted to the width in the horizontal direction shown), the limit baffle 23 is clamped at the limit groove, and the limit baffle 23 and the limit support plate 22 can be connected and fastened by connecting parts such as screws. To improve the limit accuracy of the limit baffle 23, preferably, the limit baffle 23 is installed on the limit support plate 22 in a position-adjustable manner to adjust the relative position relationship between the limit baffle 23 and the limit support plate 22, and further adjust the perpendicularity between the limit baffle 23 and the fixed seat 21, that is, the perpendicularity of the limit baffle 23, so as to avoid the side inclination of each layer of components in the fuel cell stack, and sequentially ensure the stacking accuracy of the fuel cell stack.

[0049] In this embodiment, the limit baffle 23 and the limit support plate 22 are connected by at least two position adjusting parts (not shown in the figure) arranged at intervals along the length direction of the limit support plate 22; the limit support plate 22 is provided with kidney-shaped holes for adjusting the positions of the position adjusting parts, and the limit baffle 23 is provided with mounting holes. The position adjusting parts pass through the kidney-shaped holes and are connected to the mounting holes to adjust the relative connection position between the limit baffle 23 and the limit support plate 22 and realize the fastening between the limit baffle 23 and the limit support plate 22. Among them, there can be multiple position adjusting parts, and they are arranged at intervals along the length direction of the limit support plate 22; the positions where the position adjusting parts are installed on the limit support plate 22, especially when the limit support plate 22 is inclined, by adjusting the positions of each position adjusting part, it can be ensured that each position adjusting part is arranged on the same straight line and this straight line is perpendicular to the fixed seat 21, so as to ensure that the connection points between the limit baffle 23 and each position adjusting part are on the same vertical straight line, and further ensure the perpendicularity of the limit baffle 23, avoid the limit baffle 23 from tilting due to the inclination of the limit support plate 22, and when the limit support plate 22 is inclined, the perpendicularity of the limit baffle 23 can be ensured by adjusting the relative position of the limit baffle 23, so as to ensure the perpendicularity of the limit side (such as Figure 5 the bottom side shown) of the limit baffle 23, and further ensure the stacking accuracy of each layer of components in the fuel cell stack supported by this limit side.

[0050] Specifically, the support entity part of the limit support plate 22 on one side of the limit groove is provided with a plurality of horizontally arranged kidney-shaped holes along its length direction (such as Figure 3 the vertical direction shown), and the limit baffle 23 is provided with a plurality of horizontally arranged kidney-shaped holes along its length direction (such as Figure 3There are a plurality of mounting holes adapted to the position adjusting member in the vertical direction (as shown), the length direction of the waist-shaped hole is arranged perpendicular to the first preset direction, the horizontal mounting position of the position adjusting member in the waist-shaped hole can be adjusted, and then the relative positions of the mounting holes on the limit baffle 23 corresponding to each waist-shaped hole one by one can be adjusted, so that the relative position, that is, the angle, between the straight line where the axis of the mounting hole on the limit baffle 23 is located and the end of the limit support plate 22 can be adjusted. When the limit support plate 22 is vertically arranged, that is, when the end side of the limit support plate 22 is perpendicular, the end side of the limit support plate 22 and the straight line where the axis of the mounting hole on the limit baffle 23 is located can be arranged in parallel, that is, both are vertically arranged. When the limit support plate 22 is deformed during use and tilted, that is, when the end side of the limit support plate 22 is tilted, the end side of the limit support plate 22 and the straight line where the axis of the mounting hole on the limit baffle 23 is located are arranged at an angle. By adjusting the horizontal mounting position of the position adjusting member in the waist-shaped hole, the straight line where the axis of the mounting hole on the limit baffle 23 is located can be vertically arranged to ensure the perpendicularity of the limit baffle 23, and further ensure the stacking accuracy of each layer of components in the fuel cell stack.

[0051] See Figures 5 to 12 , which shows the preferred structure of the movable limit mechanism provided by the embodiment of the present invention. As shown in the figure, the movable limit mechanism 3 includes: a fixed support member 31, a pull-out type limit member 32, and a rotary limit member 33.

[0052] The pull-out type limit member 32 is connected to the fixed support member 31 in a slidable manner along the second preset direction (such as Figure 11 the horizontal direction shown), and is used to be pushed to the pull-out limit working position to limit the end side of the fuel cell stack, and can also be pulled back to the pull-out loading and unloading working position; wherein, the end side of the fuel cell stack is perpendicular to the side of the fuel cell stack, and the second preset direction is perpendicular to the first preset direction.

[0053] Specifically, the fixed support member 31 is a vertical support frame, which is vertically arranged, and the bottom can be fixedly installed on the base 1 by bolts, and can fixedly support the pull-out type limit member 32 and the rotary limit member 33. The pull-out type limit member 32 is connected to the fixed support member 31 in a slidable manner along the second preset direction to slide relative to the fixed support member 31 in the second preset direction to slide to the pull-out limit working position, that is, Figure 5 the position where the pull-out type limit member 32 of the left movable limit mechanism 3 shown is located, and the limit portion of the pull-out type limit member 32 (such as Figure 5 the right end of the pull-out type limit member 32 of the left movable limit mechanism 3 shown) is inserted into the limit notch on the left end side of the product lifting mechanism 4 to limit the end side of the fuel cell stack. The pull-out type limit member 32 can also be pulled back to the pull-out loading and unloading working position, that is, Figure 5At the position of the pull-out limiting member 32 of the right-side movable limiting mechanism 3 shown, the limiting portion of the pull-out limiting member 32 (such as Figure 5 the left end of the pull-out limiting member 32 of the right-side movable limiting mechanism 3 shown) is placed on the left side of the product lifting mechanism 4, and there is a gap between it and the product lifting mechanism 4 to make way for the downward translation of the fuel cell stack on the product lifting mechanism 4. In this embodiment, as Figure 6 shown, a first pull-out locking member 34 is provided on the pull-out limiting member 32, which is used to lock the pull-out limiting member 32 on the fixed support member 31 when the pull-out limiting member 32 is pushed to the pull-out limiting station and / or pulled back to the pull-out picking and placing station, so as to realize the locking of the pull-out limiting member 32, avoid the self-sliding of the pull-out limiting member 32, or the sliding under the action of other components, thereby ensuring the accuracy of the limit and also ensuring the safety of the use of this tooling. Of course, to further avoid the inclination of the pull-out limiting member 32 at the limiting station, further preferably, a plurality of second pull-out locking members 35 are provided on the pull-out limiting member 32, which are used to lock the pull-out limiting member 32 on the fixed support member 31 when the pull-out limiting member 32 is pushed to the pull-out limiting station. In this embodiment, the second pull-out locking members 35 can be two, which are respectively arranged above and below the first pull-out locking member 34, so as to be locked by one first pull-out locking member 34 and two second pull-out locking members 35 at the pull-out limiting station. Among them, one first pull-out locking member 34 and two second pull-out locking members 35 can be arranged on the same straight line to further ensure the stability, further avoid the inclination of the pull-out limiting member 32, and thus ensure the limit accuracy.

[0054] The rotary limiting member 33 is connected to the fixed support member 31 in a rotatable manner, and is used to rotate to the rotary limiting station to limit the second side of the fuel cell stack, and can also rotate to the rotary picking and placing station to horizontally take out the stacked and assembled fuel cell stack.

[0055] Specifically, the rotary limiting member 33 and the fixed support member 31 are rotatably connected through a vertically arranged rotary support shaft 36. The vertically arranged rotary support shaft 36 can be fixedly installed on the fixed support member 31 to rotatably support the rotary limiting member 33. The rotary end of the rotary limiting member 33 (such as Figure 11 the right end shown) is rotatably connected to the rotary support shaft 36, so that the rotary limiting member 33 can rotate integrally relative to the rotary support shaft 36, and thus the limiting end of the rotary limiting member 33 (such as Figure 11 the left end shown) can rotate to the rotary limiting station, that is, rotate to Figure 11 the horizontal state station shown, that is, at the position shown in Figure 5 the limiting end of the rotary limiting member 33 (such as Figure 5The right top end of the rotary limiting member 33 of the left movable limiting mechanism 3 shown is clamped at the limiting notch on the bottom side edge of the product lifting mechanism 4 to limit the second side edge of the fuel cell stack. The rotary limiting member 33 can also rotate to the rotary picking and placing station. For example, Figure 5 the rotary limiting member 33 on the left side shown can rotate clockwise by at least 90° to make way for the fuel cell stack to be taken out by translation downward, so that the fuel cell stack can be taken out by translation downward, and the bottom plate structure of the fuel cell stack can also be translated upward and installed on the product lifting mechanism 4.

[0056] In this embodiment, a rotary locking member 37 is provided on the rotary limiting member 33 to lock the rotary limiting member 33 on the base 1 when the rotary limiting member 33 rotates to the rotary limiting station. Specifically, when the rotary limiting member 33 rotates to the rotary limiting station, the rotary locking member 37 can lock the rotary limiting member 33 on the base 1 to realize the locking of the rotary limiting member 33, avoid the self-rotation of the rotary limiting member 33, or rotation under the action of other components, thereby ensuring the accuracy of the limit.

[0057] In this embodiment, a clearance fit can be provided between the draw-type limiting member 32 and the fixed support member 31 to reduce sliding friction, and it can be locked by a first draw locking member 34 and two second draw locking members 35 to ensure stability.

[0058] In this embodiment, a linear bearing 68 can be provided between the draw-type limiting member 32 and the fixed support member 31. The contact between the ball and the linear shaft is a point contact, so that the friction is small and the movement accuracy is high.

[0059] Continue to refer to Figure 6 , the fixed support member 31 includes: a bottom support base 311, a top support base 312, and two vertical support plates 313; wherein, the bottom support base 311 and the top support base 312 are arranged in parallel and at intervals, the two vertical support plates 313 are arranged side by side between the bottom support base 311 and the top support base 312, and a plurality of connecting rods 314 are further provided between the two vertical support plates 313 between the bottom support base 311 and the top support base 312 to strengthen the connection between the two vertical support plates 313 and improve the stability of the two vertical support plates 313.

[0060] Continue to refer to Figure 7, the pull - out type limiting member 32 includes: a pull - out limiting body 321, a pull - out plate 322, and at least two sliding rods 323; wherein, both the pull - out limiting body 321 and the pull - out plate 322 are vertically arranged and spaced apart, and each sliding rod 323 is arranged between the pull - out limiting body 321 and the pull - out plate 322. Both ends of each sliding rod 323 are respectively connected to the pull - out limiting body 321 and the pull - out plate 322, and are used for slidably connecting to the fixed support member 31.

[0061] Specifically, each sliding rod 323 can be horizontally arranged and both ends are respectively connected to the pull - out limiting body 321 and the pull - out plate 322. The connection can be achieved by welding or other means, and no specific limitation is made in this embodiment. The pull - out limiting body 321, the pull - out plate 322, and at least two sliding rods 323 form an integral structure, which can slide integrally relative to the fixed support member 31 to apply a pulling force through the pull - out plate 322 and drive the pull - out type limiting member 32 to slide integrally. Among them, the structure of the pull - out limiting body 321 can refer to the structures of the limiting support plate 22 and the limiting baffle 23 in the fixed limiting mechanism 2, and a combined adjustable limiting structure is formed for limiting adjustment to avoid the problem of low limiting accuracy caused by inclination. A pull - out handle 324 can be provided on the pull - out plate 322 to facilitate applying a pulling force for position adjustment. In this embodiment, the sliding rod 323 slidably penetrates through the sliding support plate of the vertical support plate 313 of the fixed support member 31, and there is a clearance fit between the sliding rod 323 and the sliding support plate, and a linear bearing 68 is provided at the connection. In this embodiment, the limiting baffle structure of the pull - out limiting body 321 can be arranged along the second preset direction, that is, along the sliding direction of the pull - out type limiting member 32, to limit the end side of the fuel cell stack.

[0062] Continue to refer to Figure 6 , the rotary type limiting member 33 can include: a rotary limiting body 331, a rotary plate 332, and at least two rotary rods 333; wherein, the rotary plate 332 is arranged on the rotary limiting body 331 to drive the rotary limiting body 331 to adjust the rotary position; one end of each rotary rod 333 (such as Figure 6 the upper right end shown) is rotatably connected to the rotary support shaft 36. In particular, the end of the rotary rod 333 has a rotary hole and is rotatably sleeved on the rotary support shaft 36, and the other end (such as Figure 6 the lower left end shown) is connected to the rotary limiting body 331, so that the rotary limiting body 331 can rotate around the axis of the rotary support shaft 36 to achieve position adjustment. Among them, a rotary handle 334 can be provided on the rotary plate 332.

[0063] Continue to refer to Figure 10 and Figure 11, the first draw locking fastener 34 may include: a draw fixing block 341, a draw locking block 342, and a draw locking pin 343; wherein, the draw fixing block 341 is arranged on the fixed support 31, and the draw locking block 342 is arranged on the draw type limiting member 32; the draw locking pin 343 is inserted into the draw fixing block 341 and the draw locking block 342 in a pluggable manner, and is used to lock the draw locking block 342 on the draw fixing block 341 when the draw type limiting member 33 is drawn to the draw limiting station or the draw taking and placing station.

[0064] Specifically, the draw fixing block 341 is arranged between two vertical support plates 313, and two sides thereof are respectively connected to the two vertical support plates 313; wherein, a draw locking hole 3411 is provided on the draw fixing block 341, which is adapted to the draw locking pin 343. The draw locking block 342 is arranged between the draw limiting body 321 and the draw plate 322, and two sides thereof are respectively connected to the draw limiting body 321 and the draw plate 322; wherein, a limiting locking hole 3421 and a taking and placing locking hole 3422 are provided on the draw locking block 342, which respectively correspond to the draw limiting station and the draw taking and placing station, and both the limiting locking hole 3421 and the taking and placing locking hole 3422 are adapted to the draw locking pin 343. When the draw type limiting member 32 is pushed to the draw limiting station, the draw locking hole 3411 and the limiting locking hole 3421 are coaxially arranged, and the draw locking pin 343 is inserted into the draw locking hole 3411 and the limiting locking hole 3421, so that when the draw locking block 342 slides to the draw limiting station along with the draw type limiting member 32, the draw fixing block 341 and the draw locking block 342 can be locked. When the draw type limiting member 32 is drawn back to the draw taking and placing station, the draw locking hole 3411 and the taking and placing locking hole 3422 are coaxially arranged, and the draw locking pin 343 is inserted into the draw locking hole 3411 and the taking and placing locking hole 3422, so that when the draw locking block 342 slides to the draw taking and placing station along with the draw type limiting member 32, the draw fixing block 341 and the draw locking block 342 can be locked.

[0065] In this embodiment, the structure of the second draw locking fastener 35 may refer to the structure of the first draw locking fastener 34, the difference being that a hole is provided on the corresponding draw locking block for locking during the draw limiting station.

[0066] In this embodiment, the structure of the rotary locking fastener 37 may refer to the structure of the first draw locking fastener 34, the difference being that a hole is provided on the corresponding draw locking block for locking during the rotary limiting station; meanwhile, the fixing member is arranged on the base 1, and when the rotary type limiting member 33 rotates to the rotary limiting station, the rotary type limiting member 33 can be locked on the base 1 through the locking pin.

[0067] See Figures 13 to 14, which shows the preferred structure of the product lifting mechanism provided by the embodiments of the present invention. As shown in the figure, the product lifting mechanism 4 may include: a lifting plate 41, two positioning pin sleeves 42, and two fixed seats 43; wherein, the lifting plate 41 is used to support the fuel cell stack; the two positioning pin sleeves 42 and the two fixed seats 43 are respectively arranged at the four corner positions at the bottom of the lifting plate 41, and are used to contact and lift the two positioning pin sleeves 42 and the two fixed seats 43 through the lifting drive mechanism placed on the lower side, so as to lift the lifting plate 41; wherein, the positioning pin sleeve 42 is adapted to the positioning pin on the lifting drive mechanism.

[0068] Specifically, the lifting plate 41 is used to support the fuel cell stack to drive the fuel cell stack to move up and down, thereby facilitating the stacking and installation of components on each layer. The two positioning pin sleeves 42 and the two fixed seats 43 are arranged at the bottom of the lifting plate 41 and are respectively arranged at the four corner positions of the lifting plate 41. The tops of the two positioning pin sleeves 42 and the two fixed seats 43 are respectively connected to the four corners of the lifting plate 41. By lifting the two positioning pin sleeves 42 and the two fixed seats 43, the lifting plate 41 can be moved up and down, thereby driving the fuel cell stack to move up and down. The two positioning pin sleeves 42 are adapted to the positioning pins on the lifting drive mechanism, which can make the positioning pins on the lifting drive mechanism be inserted and fixed on the positioning pin sleeves 42, realize the positioning between the lifting drive mechanism and the lifting plate 41, avoid the relative displacement between the lifting drive mechanism and the lifting plate 41, and ensure the stability of the lifting plate 41 and the fuel cell stack during the lifting process.

[0069] In this embodiment, a weight reduction and relief groove 411 is provided at the top of the lifting plate 41 facing away from the positioning pin sleeve 42 and the fixed seat 43. Specifically, the weight reduction and relief groove 411 can achieve weight reduction. At the same time, the weight reduction and relief groove 411 is arranged on the top wall of the lifting plate 41. The fuel cell stack is supported by the solid part on the side of the weight reduction and relief groove 411. At the same time, the arrangement of the weight reduction and relief groove 411 can also make it a relief place, with the solid part for support and the weight reduction and relief groove 411 for relief, ensuring the support accuracy. Of course, weight reduction holes 412 may also be provided on the lifting plate 41.

[0070] In summary, for the fuel cell stack installation tooling provided in this embodiment, the first side of the fuel cell stack is limited by the fixed limiting mechanism 2; when stacking and assembling the fuel cell stack, the two movable limiting mechanisms 3 are adjusted to the limiting station. The fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose a tooling inner cavity, so that the fuel cell stack can be limited within the tooling inner cavity. The first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and the two end sides of the fuel cell stack are limited by the movable limiting mechanisms 3. When taking out the stacked fuel cell stack for assembly, the two movable limiting mechanisms 3 are adjusted to the picking and placing station, and the tooling inner cavity is opened to take out the stacked fuel cell stack. That is to say, through the cavity structure, the overall strength of the stack tooling is enhanced. The opening and closing structure of the movable limiting mechanism 3 enables one side baffle of the tooling to be opened, facilitating the picking and placing of the stack. The tooling can be restored conveniently, solving the problem that the existing tooling for installing the fuel cell stack has inconvenient picking and placing of the stack.

[0071] In particular, through the movable limiting mechanism 3 with two stations, when stacking and assembling the fuel cell stack, it can be adjusted to the limiting station. The fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose a tooling inner cavity adapted to the contour of the fuel cell stack, so that the fuel cell stack can be limited within the tooling inner cavity. That is, the first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and the two end sides of the fuel cell stack are limited by the movable limiting mechanisms 3 to ensure the position accuracy of the stacked fuel cell stack; when taking out the stacked fuel cell stack for assembly, the two movable limiting mechanisms 3 can also be adjusted to the picking and placing station, and the tooling inner cavity is opened, that is, the opposite side of the fixed limiting mechanism 2 is opened, so that the fuel cell stack can be taken out by translation between the two movable limiting mechanisms 3. Compared with the setting of the adjustable component in the prior art, the purpose of setting the adjustable component is to adjust the horizontal and vertical positions of the stack positioning rod so that the position of the stack positioning rod is adapted to the position of the stack, and it is fixed by bolts after adjustment. Therefore, when assembling stacks of the same specification later, no adjustment is required. Therefore, the purpose of the adjustable component disclosed in the prior art is to adapt to different specifications of materials, which is different from the movable limiting mechanism 3 for adjustment for picking and placing and limiting in this application. Therefore, their structures and purposes are completely different. At the same time, the adjustment of the movable limiting mechanism 3 in this device can make one side baffle of the tooling closed to limit the stack, and can also be opened to facilitate the picking and placing of the stack. The tooling can be restored conveniently, solving the problem that the existing tooling for installing the fuel cell stack has inconvenient picking and placing of the stack. The mechanical structure of this device is simple and the cost is low, greatly reducing the cost of stacking and picking and placing, and also greatly reducing the complexity of mechanical structure installation and the complexity of later maintenance. At the same time, the stacking stability is high, ensuring the stacking accuracy of the product.

[0072] Furthermore, the fixed limiting mechanism 2, the draw limiting body 321, and / or the rotary limiting body 331 all adopt an adjustable structure, and the tooling clearance can be adjusted by adjusting the retaining edge, reducing the debugging difficulty and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy to have the situation that the inner cavity size cannot be controlled due to excessive product stacking, and the lateral compression resistance is high and it is not easy to deform.

[0073] Method embodiment:

[0074] See Figure 15 , which is a schematic flow chart of the fuel cell stack assembly method provided by the embodiment of the present invention. As shown in the figure, this assembly method uses the above fuel cell stack assembly tooling for stack limiting, including the following steps:

[0075] Step S1, adjust both movable limiting mechanisms to the limiting station, and the fixed limiting mechanism and the two movable limiting mechanisms enclose to form a tooling inner cavity.

[0076] Specifically, first, place the pre-debugged tooling on a jacking drive mechanism that can lift the product jacking mechanism 4; then, adjust both movable limiting mechanisms 3 to the limiting station, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose to form a tooling inner cavity.

[0077] Step S2, control the product jacking mechanism to rise to the preset stacking position.

[0078] Specifically, the product jacking mechanism 4 is jacked up to the preset stacking position by the jacking drive mechanism, for example, 10 mm above the tooling so that its upper surface is at a position 10 mm away from the upper limit of the tooling retaining edge.

[0079] Step S3, hoist the bottom plate structure or single cell of the fuel cell stack onto the product jacking mechanism, control the product jacking mechanism to gradually descend, and install each single cell layer by layer to complete the stacking and installation of the fuel cell stack; wherein, during the stacking and installation of each single cell, the height of each descent of the product jacking mechanism is the thickness of the single cell.

[0080] Specifically, stack them in sequence according to the stack assembly order until the stack is completed. For each stacked layer, the product jacking mechanism 4 descends a specific height; and after completing the processes such as stack pressing, locking screws or welding, and airtightness detection, it reaches the condition for stack unloading.

[0081] Step S4, adjust both movable limiting mechanisms to the pick-and-place station to open the tooling inner cavity, and take out the fuel cell stack from the other side of the fixed limiting mechanism.

[0082] Finally, remove the insertion and extraction pins of the movable limit mechanism 3, namely the pull-out locking pin 343, the pins of the second pull-out locking member 35, and the pins of the rotary locking member 37. Open the movable limit mechanism 3 outward, that is, pull the pull-out type limiting member 32 to the pull-out and placement station and rotate the rotary limiting member 33 to the rotary placement station to provide space for the placement and removal of the fuel cell stack, and take it out from the open side, that is, the other side of the fixed limit mechanism (such as Figure 5 the lower side shown), that is to say, lift it upward by a very small height so that there is a gap between the fuel cell stack and the product lifting mechanism, and then translate the fuel cell stack downward so that the fuel cell stack is taken out from between the fixed limit mechanism 2 and the two movable limit mechanisms 3; after taking out the stack, use the insertion and extraction pin positioning to restore the tooling for the next production.

[0083] In summary, for the fuel cell stack stacking tooling provided in this embodiment, the first side of the fuel cell stack is limited by the fixed limit mechanism 2; through the two movable limit mechanisms 3, when stacking and assembling the fuel cell stack, the two movable limit mechanisms 3 are adjusted to the limit station, and the fixed limit mechanism 2 and the two movable limit mechanisms 3 enclose to form a tooling inner cavity so that the fuel cell stack can be limited within the tooling inner cavity. The first side of the fuel cell stack is limited by the fixed limit mechanism 2, and the second side and the two end sides of the fuel cell stack are limited by the movable limit mechanism 3. When taking out the stacked fuel cell stack for assembly, the two movable limit mechanisms 3 are adjusted to the placement and removal station to open the tooling inner cavity to take out the stacked fuel cell stack. That is to say, through the cavity structure, the overall strength of the stack tooling is enhanced. The opening and closing structure of the movable limit mechanism 3 enables one side baffle of the tooling to be opened, facilitating the placement and removal of the stack, and the tooling restoration is convenient, solving the problem of inconvenient placement and removal of the existing fuel cell stack stacking tooling.

[0084] In particular, through the movable limiting mechanism 3 with two working positions, when stacking and assembling the fuel cell stack, it can be adjusted to the limiting working position. The fixed limiting mechanism 2 and the two movable limiting mechanisms 3 enclose a tooling inner cavity adapted to the contour of the fuel cell stack, enabling the fuel cell stack to be limited within the tooling inner cavity. That is, the first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and the two end sides of the fuel cell stack are limited by the movable limiting mechanism 3 to ensure the position accuracy of the fuel cell stack during stacking. When removing the stacked fuel cell stack for assembly, the two movable limiting mechanisms 3 can also be adjusted to the picking and placing working position, and the tooling inner cavity is opened, that is, the opposite side of the fixed limiting mechanism 2 is opened, so that the fuel cell stack can be translated out between the two movable limiting mechanisms. Compared with the adjustable component arrangement in the prior art, the purpose of the adjustable component arrangement is to adjust the horizontal and vertical positions of the stack positioning rod so that the position of the stack positioning rod is adapted to the position of the stack, and it is fixed by bolts after adjustment. During the subsequent assembly of stacks with unified specifications, no adjustment is required. Therefore, the purpose of the adjustable component disclosed in the prior art is to adapt to different specifications of materials, which is different from the movable limiting mechanism 3 in this application that is adjusted for picking and placing and limiting. Thus, their structures and purposes are completely different. At the same time, the adjustment of the movable limiting mechanism 3 in this device can make one side baffle of the tooling closed to limit the stack, and can also be opened to facilitate the picking and placing of the stack. The tooling can be restored conveniently, solving the problem that the existing tooling for stacking fuel cell stacks has inconvenient stack picking and placing. This device has a simple mechanical structure and low cost, greatly reducing the cost of stacking and picking and placing, as well as the complexity of mechanical structure installation and subsequent maintenance. At the same time, the stacking stability is high, ensuring the stacking accuracy of the product.

[0085] Furthermore, the fixed limiting mechanism 2, the draw limiting body 321, and / or the rotary limiting body 331 all adopt an adjustable structure, and the tooling gap can be adjusted by adjusting the baffle, reducing the debugging difficulty and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy to have a situation where the inner cavity size cannot be controlled due to excessive product stacking, and the lateral compression resistance is high and it is not easy to deform.

[0086] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0087] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A fuel cell stack assembly tooling, characterized in that, Comprising: A base; A plurality of fixed limiting mechanisms, arranged on the base and used for limiting the first side of the fuel cell stack; Two movable limiting mechanisms, arranged on the base at intervals, and each of the movable limiting mechanisms is arranged on the base in a movable manner. Each of the movable limiting mechanisms has a picking and placing station and a limiting station. When stacking and assembling the fuel cell stack, the two movable limiting mechanisms are adjusted to the limiting station, and the fixed limiting mechanism and the two movable limiting mechanisms enclose a tooling inner cavity, so that the fuel cell stack can be limited into the tooling inner cavity; when taking out the stacked fuel cell stack for assembly, the two movable limiting mechanisms are adjusted to the picking and placing station to open the tooling inner cavity, so as to take out the stacked fuel cell stack; A product lifting mechanism, arranged between the two movable limiting mechanisms and arranged above the base in a position-adjustable manner along the height direction, used for supporting the fuel cell stack in the tooling inner cavity, capable of lifting to a corresponding height, and gradually descending during the process of stacking the fuel cell stack layer by layer, so as to lower and stack each layer of single cells of the fuel cell stack layer by layer; The movable limiting mechanism includes: A fixed support member; A drawable limiting member, slidably connected to the fixed support member along a second preset direction, used for being pushed to the drawable limiting station to limit the end side of the fuel cell stack, and capable of being drawn back to the drawable picking and placing station; wherein, the end side of the fuel cell stack is perpendicular to the side of the fuel cell stack; A rotatable limiting member, rotatably connected to the fixed support member, used for rotating to the rotatable limiting station to limit the second side of the fuel cell stack, and capable of rotating to the rotatable picking and placing station to translate and take out the stacked and assembled fuel cell stack.

2. The fuel cell stack stacking tooling according to claim 1, wherein The drawable limiting member is provided with a first drawable locking member, used for locking the drawable limiting member on the fixed support member when the drawable limiting member is pushed to the drawable limiting station and / or drawn back to the drawable picking and placing station; and / or, The drawable limiting member is provided with a plurality of second drawable locking members, used for locking the drawable limiting member on the fixed support member when the drawable limiting member is pushed to the drawable limiting station.

3. The fuel cell stack assembly tooling according to claim 2, characterized in that The first drawable locking member includes: A drawable fixing block arranged on the fixed support member; A drawable locking block arranged on the drawable limiting member; A drawable locking pin, inserted into the drawable fixing block and the drawable locking block in a pluggable manner, used for locking the drawable locking block on the drawable fixing block when the drawable limiting member is drawn to the drawable limiting station or the drawable picking and placing station.

4. The fuel cell stack stacking tooling according to claim 3, wherein The draw fixing block is provided with a draw locking hole, and the draw locking block is provided with a limit locking hole and a pick-and-place locking hole, which correspond to the draw limiting station and the draw pick-and-place station respectively; When the draw-type limiting member is pushed to the draw limiting station, the draw locking pin is inserted into the draw locking hole and the pick-and-place locking hole; When the draw-type limiting member is retracted to the draw pick-and-place station, the draw locking pin is inserted into the draw locking hole and the pick-and-place locking hole.

5. The fuel cell stack assembly tooling according to any one of claims 1 to 4, characterized in that, The product lifting mechanism includes: A lifting plate for supporting the fuel cell stack; Two positioning pin sleeves and two fixed seats, which are respectively arranged at the four corners of the bottom of the lifting plate, and are used to contact and lift the two positioning pin sleeves and the two fixed seats through a lifting drive mechanism arranged on the lower side to lift the lifting plate; wherein, the positioning pin sleeve is adapted to the positioning pin on the lifting drive mechanism.

6. The fuel cell stack assembly tooling according to any one of claims 1 to 4, characterized in that, The fixed limiting mechanism includes: A fixed seat; A limit support plate arranged on the fixed seat; A limit baffle, which is installed on the limit support plate in a position-adjustable manner, and is used to adjust the relative position relationship between the limit baffle and the limit support plate, so as to adjust the perpendicularity between the limit baffle and the base to ensure the stacking accuracy of the fuel cell stack.

7. The fuel cell stack stacking tooling according to claim 6, wherein The limit baffle and the limit support plate are connected by at least two adjusting connectors arranged at intervals along the length direction of the limit support plate; The limit support plate is provided with waist-shaped holes for adjusting the position of the adjusting connectors, and the limit baffle is provided with mounting holes. The adjusting connectors pass through the waist-shaped holes and are connected to the mounting holes, so as to adjust the relative connection position between the limit baffle and the limit support plate and realize the fastening between the limit baffle and the limit support plate.

8. The fuel cell stack stacking tooling according to any one of claims 1 to 4, wherein The rotary limiting member is provided with a rotary locking member, which is used to lock the rotary limiting member on the base when the rotary limiting member rotates to the rotary limiting station.

9. A method for assembling a fuel cell stack, characterized in that, Using the fuel cell stack stacking tooling according to any one of claims 1 to 8 for stack limiting of the fuel cell stack, includes the following steps: Adjust both of the movable limiting mechanisms to the limiting stations, and the fixed limiting mechanism and the two movable limiting mechanisms enclose to form a tooling inner cavity; Control the product lifting mechanism to rise to a preset stacking position; Lift and install the bottom plate structure or single cell of the fuel cell stack onto the product lifting mechanism, control the product lifting mechanism to gradually descend, and install each single cell layer by layer to complete the stacking installation of the fuel cell stack; wherein, during the stacking installation process of each single cell, the descending height of the product lifting mechanism each time is the thickness of the single cell; Adjust both of the movable limiting mechanisms to the pick-and-place stations to open the tooling inner cavity, and take out the fuel cell stack from the other side of the fixed limiting mechanism.

Images