Fuel cell stack loading tool and fuel cell stack loading method

Abstract

The invention provides a fuel cell stack loading tool and a fuel cell stack loading method. The tool comprises a base; the plurality of fixed limiting mechanisms are arranged on the base; the two movable limiting mechanisms are arranged on the base in a spaced mode, and each movable limiting mechanism is arranged on the base in a movable mode; the product jacking mechanism is arranged between the two movable limiting mechanisms and arranged above the base in the height direction in a position-adjustable mode. When the fuel cell stack is stacked and assembled, the two movable limiting mechanisms are adjusted to the limiting stations, and the fixed limiting mechanism and the two movable limiting mechanisms define the tool inner cavity, so that the fuel cell stack can be limited into the tool inner cavity; and the two movable limiting mechanisms are adjusted to the taking and placing station, so that the inner cavity of the tool is opened, and the stacked fuel cell stack is taken out.

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 tool and a fuel cell stack assembly method. Background Art

[0002] With the rapid development of fuel cell application technology, the application fields of fuel cell power modules have gradually expanded to electric vehicles, energy storage, communications, mining and other fields. At present, according to the established technical route, multiple single battery modules need to be connected in series or in parallel, arranged and combined together to form a single battery module unit, and steel belts need to be used for binding in this process.

[0003] At present, the fuel cell stack consists of upper and lower end plates, insulating plates, current collecting plates, bipolar plates, and membrane electrodes. The main structure is the alternating stacking of bipolar plates and membrane electrodes. As the demand for fuel cell power increases, the number of bipolar plates and membrane electrodes is also increasing, which puts higher requirements on the efficiency and accuracy of fuel cell stacking. At present, in the process of fuel cell stacking, the fuel cell stack assembly stations are all placed horizontally, and the position accuracy of the front, back, left and right cannot be guaranteed during stacking. In particular, when taking and placing, the fuel cell stack can only be hoisted upwards until the height of the fuel cell stack is higher than the stack positioning rod, and then the fuel cell stack can be taken out, which makes it inconvenient to take and place the fuel cell stack. Summary of the invention

[0004] In view of this, the present invention proposes a fuel cell stack assembly tool and a fuel cell stack assembly method, aiming to solve the problem that the existing fuel cell stack assembly tool is inconvenient to take and place the stack.

[0005] On the one hand, the present invention proposes a fuel cell stack assembly tool, which includes: a base; a plurality of fixed limiting mechanisms, which are arranged on the base and are used to limit the first side of the fuel cell stack; two movable limiting mechanisms, which are arranged on the base at intervals, and each of the movable limiting mechanisms is arranged on the base in a movable manner. When the fuel cell stack is stacked and assembled, the two movable limiting mechanisms are adjusted to the limiting position, and the fixed limiting mechanism and the two movable limiting mechanisms are surrounded to form an inner cavity of the tool, so that the fuel cell stack can be limited to the In the inner cavity of the tooling; when taking out the fuel cell stack for stacking and assembly, the two movable limiting mechanisms are adjusted to the pick-and-place position to realize the opening of the inner cavity of the tooling to take out the stacked fuel cell stack; the product lifting mechanism is arranged between the two movable limiting mechanisms, and is arranged above the base in a manner that can be adjusted in height, for supporting the fuel cell stack in the inner cavity of the tooling, and can be lifted to a corresponding height, and gradually descended during the layer-by-layer stacking process of the fuel cell stack, so as to lower and stack each layer of single cells of the fuel cell stack layer by layer.

[0006] Furthermore, in the above-mentioned fuel cell stack assembly tool, the movable limiting mechanism includes: a fixed support member; a pull-out limiting member, which is slidably connected to the fixed support member along a second preset direction, and is used to be pushed to a pull-out limiting position to limit the end side of the fuel cell stack, and can also be pulled back to a pull-out pick-up and placement position; wherein the end side of the fuel cell stack is perpendicular to the side of the fuel cell stack; a rotating limiting member, which is rotatably connected to the fixed support member, and is used to be rotated to a rotating limiting position to limit the second side of the fuel cell stack, and can also be rotated to a rotating pick-up and placement position to translate and remove the stacked and assembled fuel cell stack.

[0007] Furthermore, in the above-mentioned fuel cell stack assembly tool, the pull-out limit member is provided with a first pull-out locking fixture, which is used to lock the pull-out limit member to the fixed support member when the pull-out limit member is pushed to the pull-out limit position and / or withdrawn to the pull-out pick-up and release position; and / or, the pull-out limit member is provided with a plurality of second pull-out locking fixtures, which are used to lock the pull-out limit member to the fixed support member when the pull-out limit member is pushed to the pull-out limit position.

[0008] Furthermore, in the above-mentioned fuel cell stack assembly tool, the first pull-out locking piece includes: a pull-out fixing block arranged on the fixed support piece; a pull-out locking block arranged on the pull-out type limiting piece; a pull-out locking pin, which is pluggable and removable on the pull-out fixing block and the pull-out locking block, and is used to lock the pull-out locking block on the pull-out fixing block when the pull-out type limiting piece is pulled to the pull-out limiting position or the pull-out pick-up and release position.

[0009] Furthermore, in the above-mentioned fuel cell stack assembly tool, the pull-out fixing block is provided with a pull-out locking hole, and the pull-out locking block is provided with a limit locking hole and a pick-and-place locking hole, which respectively correspond to the pull-out limit position and the pull-out pick-and-place position; when the pull-out limit member is pushed to the pull-out limit position, the pull-out locking pin is inserted into the pull-out locking hole and the pick-and-place locking hole; when the pull-out limit member is withdrawn to the pull-out pick-and-place position, the pull-out locking pin is inserted into the pull-out locking hole and the pick-and-place locking hole.

[0010] Furthermore, in the above-mentioned fuel cell stack assembly tooling, the product jacking mechanism includes: a jacking plate for supporting the fuel cell stack; two positioning pin sleeves and two fixing seats, the two positioning pin sleeves and the two fixing seats are respectively arranged at the four corners of the bottom of the jacking plate, and are used to contact and lift the two positioning pin sleeves and the two fixing seats through a jacking drive mechanism disposed on the lower side, so as to lift the jacking plate; wherein the positioning pin sleeves are adapted to the positioning pins on the jacking drive mechanism.

[0011] Furthermore, the fixed limiting mechanism of the above-mentioned fuel cell stack assembly tool includes: a fixed seat; a limiting support plate, which is arranged on the fixed seat; and a limiting baffle, 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 and the limiting support plate, so as to adjust the verticality between the limiting baffle and the base, so as to ensure the stacking accuracy of the fuel cell stack.

[0012] Furthermore, in the above-mentioned fuel cell stack assembly tooling, the limit baffle and the limit support plate are connected by at least two position adjustment members arranged at intervals along the length direction of the limit support plate; the limit support plate is provided with a waist-shaped hole for adjusting the position of the position adjustment member, and the limit baffle is provided with a mounting hole, the position adjustment member is passed through the waist-shaped hole and connected to the mounting hole, and is used 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.

[0013] Furthermore, in the above-mentioned fuel cell stack assembly tool, the rotary limiter is provided with a rotary locking piece for locking the rotary limiter on the base when the rotary limiter is rotated to the rotary limit position.

[0014] On the other hand, the present invention also proposes a fuel cell stack assembly method, which includes the following steps: adjusting both movable limit mechanisms to the limit positions, and the fixed limit mechanism and the two movable limit mechanisms are surrounded to form an inner cavity of the tooling; 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 installation of the fuel cell stack; wherein, during the stacking installation process of each single cell, the product lifting mechanism descends by a height equal to the thickness of the single cell each time.

[0015] The fuel cell stack assembly tool and fuel cell stack assembly method provided by the present invention limit the first side of the fuel cell stack by a fixed limiting mechanism; by two movable limiting mechanisms, when the fuel cell stack is stacked and assembled, the two movable limiting mechanisms are adjusted to the limiting position, the fixed limiting mechanism and the two movable limiting mechanisms are surrounded to form a tooling inner cavity, so that the fuel cell stack can be limited to the tooling inner cavity, 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 mechanism, and when the fuel cell stack is taken out for stacking and assembly, the two movable limiting mechanisms are adjusted to the taking and placing position to realize the opening of the tooling inner cavity to take out the stacked fuel cell stack, that is, the overall strength of the stack tooling is enhanced by the cavity-type structure, and the opening and closing structure of the movable limiting mechanism allows the side guard of the tooling to be opened, which is convenient for taking and placing the stack, and the tooling is easy to restore, which solves the problem of inconvenient taking and placing of the fuel cell stack in the existing fuel cell stack assembly tooling.

[0016] In particular, through the movable limiting mechanism with two positions, when the fuel cell stack is stacked and assembled, it can be adjusted to the limiting position, and the fixed limiting mechanism and the two movable limiting mechanisms are surrounded to form a tooling inner cavity that is compatible with the outline of the fuel cell stack, so that the fuel cell stack can be limited to 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 mechanism to ensure the position accuracy of the fuel cell stack; when the fuel cell stack is taken out of the stack assembly, the two movable limiting mechanisms can also be adjusted to the pick-and-place position, and the tooling inner cavity is open, that is, the opposite side of the fixed limiting mechanism is opened, so that the fuel cell stack can be taken out from between the two movable limiting mechanisms. At the same time, the adjustment of the movable limiting mechanism in the device can make the side of the tooling closed, realize the limitation of the stack, and can also be opened, which is convenient for taking and placing the stack, and the tooling is easy to restore, which solves the problem of inconvenient stacking in the existing fuel cell stacking tooling. The device has a simple mechanical structure and low cost, which greatly reduces the cost of stacking and placing, and also greatly reduces the complexity of mechanical structure installation and subsequent maintenance. At the same time, the stacking stability is high, ensuring the accuracy of product stacking.

[0017] Furthermore, the fixed limit mechanism, the pull-out limit body and / or the rotation limit body all adopt an adjustable structure, and the tooling gap can be adjusted by adjusting the retaining edge, thereby reducing the difficulty of debugging and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy for the inner cavity size to be out of control due to excessive product stacking. It has high lateral pressure resistance and is not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A schematic diagram of the structure of a fuel cell stack assembly tool provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a fuel cell stack assembly tool in another direction provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a fuel cell stack assembly tool in another direction provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a fuel cell stack assembly tool in another direction provided by an embodiment of the present invention; Figure 5 A top view of a fuel cell stack assembly tool provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a movable limiting mechanism provided in an embodiment of the present invention; Figure 7 Another structural schematic diagram of the movable limiting mechanism provided in an embodiment of the present invention; Figure 8 Another structural schematic diagram of the movable limiting mechanism provided in the embodiment of the present invention; Fig. 9 Another structural schematic diagram of the movable limiting mechanism provided in the embodiment of the present invention; Fig.10 Another structural schematic diagram of the movable limiting mechanism provided by an embodiment of the present invention; Fig.11 A front view of a movable limiting mechanism provided in an embodiment of the present invention; Fig.12 A top view of the movable limiting mechanism provided in an embodiment of the present invention; Fig.13 A schematic diagram of the structure of a product lifting mechanism provided by an embodiment of the present invention; Fig.14 A schematic diagram of the structure of the product lifting mechanism provided in another direction according to an embodiment of the present invention; Fig.15 A schematic flow chart of a fuel cell stack assembly method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying 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 in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Tooling Example: 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, the upper and lower sides of the uppermost and lowermost single cells may also be provided with plate structures such as end plates, current collecting plates and insulating plates.

[0021] See also Figures 1 to 4 , which shows the preferred structure of the fuel cell stack assembly tool provided by the embodiment of the present invention. As shown in the figure, the fuel cell stack assembly tool includes: a base 1, a plurality of fixed limit mechanisms 2, two movable limit mechanisms 3, and a product lifting mechanism 4; wherein, A plurality of fixed limiting mechanisms 2 are arranged on the base 1 for limiting the first side edge of the fuel cell stack (not shown in the figure).

[0022] Specifically, the base 1 serves as a bottom support. Each fixed limiting mechanism 2 can be arranged vertically on the base 1, and the bottom is fixedly installed on the base 1. It can be fixedly installed on the base 1 by bolts and other connecting parts, or it can be installed and fixed by other methods. This embodiment does not impose any restrictions on it. There can be one fixed limiting mechanism 2, which can limit the middle position of the first side of the fuel cell stack, and can also limit other positions of the first side of the fuel cell stack. This embodiment does not impose any restrictions on it; of course, there can also be multiple fixed limiting mechanisms 2. For example, in this embodiment, two are taken as an example to illustrate that the two fixed limiting mechanisms 2 are arranged along the first preset direction (such as Figure 5 The two fixing limit mechanisms 2 are arranged side by side in the horizontal direction (i.e., the AA direction) and can be fixed to the upper side of the product lifting mechanism 4 (relative to the product lifting mechanism 4) by the bottom ends of the two fixing limit mechanisms 2. Figure 5 The fuel cell stack is stacked 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 correspond to and are flush with the left and right end sides of the product lifting mechanism 4.

[0023] 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 pick-up and placement position and a limiting position. When the fuel cell stack is stacked and assembled, the two movable limiting mechanisms 3 are adjusted to the limiting position, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form a tooling cavity, so that the fuel cell stack can be limited in the tooling cavity; when the fuel cell stack is taken out of the stacked assembly, the two movable limiting mechanisms 3 are adjusted to the pick-up and placement position to realize the opening of the tooling cavity to take out the stacked fuel cell stack.

[0024] Specifically, the two movable limiting mechanisms 3 are arranged vertically, and the two movable limiting mechanisms 3 are arranged at intervals on one side of the two fixed limiting mechanisms 2 (such as Figure 5 The lower side shown in the figure), and the two movable limiting mechanisms 3 can be movable relative to the base 1, and can have two states, namely a limiting state and a taking and placing state. When the fuel cell stack is stacked and assembled, the two movable limiting mechanisms 3 are adjusted to the limiting position, that is, switched to the limiting state. The fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form 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 two end sides of the fuel cell stack are limited by the two movable limiting mechanisms 3. In particular, the second side and the left end side of the fuel cell stack can be limited by one of the movable limiting mechanisms 3, such as the left movable limiting mechanism 3, and the second side and the right end side of the fuel cell stack can be limited by another movable limiting mechanism 3, such as the right movable limiting mechanism 3, to achieve circumferential limitation of the fuel cell stack, so that the fuel cell stack can be limited to the tooling inner cavity. When taking out the stacked assembly of the fuel cell stack, the two movable limiting mechanisms 3 are adjusted to the pick-and-place position, that is, switched to the pick-and-place state. The two movable limiting mechanisms 3 can be moved to the left and right sides of the product lifting mechanism 4, and can avoid the position where the fuel cell stack moves downward, that is, the inner cavity of the tooling is opened to take 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 bottom of multiple single cells in the fuel cell stack, the two movable limiting mechanisms 3 can also be switched to the pick-and-place state, by hoisting the bottom plate structure and moving it upward between the two movable limiting mechanisms 3, so as to move the bottom plate structure horizontally to the top of the product lifting mechanism 4, and lower it to the product lifting mechanism 4, so as to continue the stacking operation of the subsequent layers of single cells. Of course, the bottom plate structure can also be directly hoisted to the top of the product lifting mechanism 4 and lowered to the product lifting mechanism 4 by hoisting.

[0025] The product lifting mechanism 4 is arranged between the two movable limiting mechanisms 3, and the product lifting mechanism 4 is arranged above the base 1 in a position-adjustable manner along the height direction, and is used to support the fuel cell stack in the inner cavity of the tooling, and can be lifted to a corresponding height, and gradually descended during the layer-by-layer stacking process of the fuel cell stack, so as to lower and stack each layer of single cells of the fuel cell stack layer by layer.

[0026] 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 position-adjustable manner along the height direction, and can be lifted and lowered under the driving action of the lifting drive mechanism (not shown in the figure). Under the driving action of the lifting drive mechanism, the product lifting mechanism 4 can rise to the preset stacking position, so as to install the fuel cell stack by hoisting or other methods, for example, the bottom plate structure is hoisted to the product lifting mechanism 4, or a layer of single cells is hoisted to the product lifting mechanism 4 with the bottom plate structure installed, and the circumferential limit is performed by a plurality of fixed limit mechanisms 2 and two movable limit mechanisms 3 to ensure the limit accuracy, and under the driving action of the lifting drive mechanism, the product lifting mechanism 4 is lowered by the thickness of a single cell, and the next single cell is installed, and the above-mentioned method is installed to hoist and stack each single cell layer by layer, and finally after descending to a certain height, the top plate structure is hoisted to the uppermost single cell to complete the stacking of the fuel cell stack. Among them, the preset stacking position can be determined according to actual conditions, and it is not limited in this embodiment.

[0027] In this embodiment, a lifting lug 11 may be provided on the base 1 for lifting the stacking tool to the installation position of the fuel cell stack.

[0028] Continue to see Figure 2 , Figure 4 and Figure 5 The fixed limiting mechanism 2 includes: a fixed seat 21, a limiting support plate 22 and a limiting baffle 23; wherein 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 position-adjustable manner, and is used to adjust the relative position relationship between the limiting baffle 23 and the limiting support plate 22, so as to adjust the verticality between the limiting baffle 23 and the base 21, so as to ensure the stacking accuracy of the fuel cell stack.

[0029] Specifically, the fixing seat 21 can be fixedly mounted on the base 1 by means of bolts or other connecting members. The limiting support plate 22 is arranged vertically and perpendicular to the first preset direction, and the bottom can be vertically mounted on the fixing seat 21 by means of bolts or other connecting members. In this embodiment, the limiting end (such as Figure 5 The lower left end shown in FIG. 1 may be provided with a limit groove, the depth of which is equal to the thickness of the limit baffle 23 (such as Figure 5 The limit baffle 23 is fixed in the limit groove, and the limit baffle 23 and the limit support plate 22 can be connected and fastened by screws and other connecting parts. In order to improve the limiting 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 then adjust the verticality between the limit baffle 23 and the base 21, that is, the verticality of the limit baffle 23, so as to avoid the side tilt of each layer of components in the fuel cell stack, and ensure the stacking accuracy of the fuel cell stack in turn.

[0030] In this embodiment, the limit baffle 23 and the limit support plate 22 are connected by at least two position adjustment members (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 a waist-shaped hole for adjusting the position of the position adjustment member, and the limit baffle 23 is provided with a mounting hole. The position adjustment member is passed through the waist-shaped hole and connected to the mounting hole, which is used 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 adjustment members, and they are arranged at intervals along the length direction of the limit support plate 22; the positions that can be installed on the limit support plate 22 through the position adjustment members, especially when the limit support plate 22 is tilted, by adjusting the positions of the position adjustment members, it can be ensured that the position adjustment members are arranged on the same straight line and the straight line is perpendicular to the fixed seat 21, so as to ensure that the connection points between the limit baffle 23 and the position adjustment members are on the same vertical straight line, thereby ensuring the verticality of the limit baffle 23, avoiding the limit baffle 23 from tilting due to the tilting of the limit support plate 22, and ensuring the verticality of the limit baffle 23 by adjusting the relative position of the limit baffle 23 when the limit support plate 22 is tilted, so as to ensure that the limiting side edge of the limit baffle 23 (such as Figure 5 The verticality of the bottom side edge (as shown) is ensured, thereby ensuring the stacking accuracy of each layer of components in the fuel cell stack supported by the limiting side edge.

[0031] Specifically, the support entity portion of the limiting support plate 22 on one side of the limiting groove is arranged along its length direction (eg Figure 3 A plurality of waist-shaped holes are arranged horizontally, and the limit baffle 23 is provided along its length direction (as shown in the vertical direction) Figure 3The vertical direction shown in the figure is provided with a plurality of mounting holes adapted to the position adjustment member, the length direction of the waist-shaped hole is arranged perpendicular to the first preset direction, and the horizontal mounting position of the position adjustment member in the waist-shaped hole can be adjusted, and then the relative position of the mounting holes on the limit baffle 23 corresponding to each waist-shaped hole 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 arranged vertically, that is, the side edge of the end of the limit support plate 22 is vertical, the side edge of the end of the limit support plate 22 is perpendicular to the limit baffle 2 3 can be arranged in parallel between the straight lines where the axes of the upper mounting holes are located, that is, they are arranged vertically. When the limiting support plate 22 is deformed during use and tilted, that is, the side edge of the limiting support plate 22 is tilted, the side edge of the limiting support plate 22 and the straight line where the axes of the upper mounting holes of the limiting baffle plate 23 are located are arranged at an angle. The position adjusting member can be adjusted at the horizontal installation position of the waist-shaped hole so that the straight line where the axes of the upper mounting holes of the limiting baffle plate 23 are located is arranged vertically, so as to ensure the verticality of the limiting baffle plate 23, thereby ensuring the stacking accuracy of each layer of components in the fuel cell stack.

[0032] See also Figures 5 to 12 , which shows the preferred structure of the movable limiting mechanism provided by the embodiment of the present invention. As shown in the figure, the movable limiting mechanism 3 includes: a fixed support member 31, a pull-out limiting member 32 and a rotating limiting member 33.

[0033] The pull-out limiting member 32 moves along the second preset direction (eg Fig.11 The horizontal direction shown in the figure is connected to the fixed support member 31 in a slidable manner, and is used to be pushed to the pull-out limit position to limit the end side of the fuel cell stack, and can also be pulled back to the pull-out and pick-up 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.

[0034] Specifically, the fixed support member 31 is a vertical support frame, which is arranged vertically, and the bottom can be fixedly mounted on the base 1 by bolts, and can provide fixed support for the pull-out limit member 32 and the rotation limit member 33. The pull-out limit member 32 is connected to the fixed support member 31 in a slidable manner along the second preset direction, so as to slide relative to the fixed support member 31 in the second preset direction, so as to slide to the pull-out limit position, that is, Figure 5 At the position where the pull-out limiting member 32 of the left movable limiting mechanism 3 is located, the limiting portion of the pull-out limiting member 32 (such as Figure 5 The right end of the pull-out limiter 32 of the left movable limiter mechanism 3 is inserted into the limiter notch on the left end of the product lifting mechanism 4 to limit the end of the fuel cell stack. The pull-out limiter 32 can also be withdrawn to the pull-out position, that is, Figure 5At the position where the pull-out limiting member 32 of the right movable limiting mechanism 3 is located, the limiting portion of the pull-out limiting member 32 (such as Figure 5 The left end of the pull-out limiter 32 of the right movable limiter 3 is placed on the left side of the product lifting mechanism 4, and there is a gap between the product lifting mechanism 4 to make way for the downward translation of the fuel cell stack on the product lifting mechanism 4. Figure 6 As shown, the pull-out limiter 32 is provided with a first pull-out locking member 34, which is used to lock the pull-out limiter 32 on the fixed support member 31 when the pull-out limiter 32 is pushed to the pull-out limit position and / or withdrawn to the pull-out pick-up position, so as to achieve the locking of the pull-out limiter 32, prevent the pull-out limiter 32 from sliding on its own, or sliding under the action of other parts, thereby ensuring the accuracy of the limit, and also ensuring the safety of the use of the tooling. Of course, in order to further prevent the pull-out limiter 32 from tilting at the limit position, it is further preferred that the pull-out limiter 32 is provided with a plurality of second pull-out locking members 35, which are used to lock the pull-out limiter 32 on the fixed support member 31 when the pull-out limiter 32 is pushed to the pull-out limit position. In this embodiment, there may be two second pull-out locks 35, which are respectively arranged above and below the first pull-out lock 34, so that at the pull-out limit position, locking is performed by one first pull-out lock 34 and two second pull-out locks 35. Among them, one first pull-out lock 34 and two second pull-out locks 35 can be placed on the same straight line to further ensure stability, further avoid tilting of the pull-out limit member 32, and thus ensure limit accuracy.

[0035] The rotary limit member 33 is rotatably connected to the fixed support member 31, and is used to rotate to a rotary limit position to limit the second side of the fuel cell stack, and can also be rotated to a rotary pick-and-place position to translate and remove the stacked and assembled fuel cell stack.

[0036] Specifically, the rotary stopper 33 is rotatably connected to the fixed support member 31 via a vertically arranged rotary support shaft 36. The vertically arranged rotary support shaft 36 can be fixedly mounted on the fixed support member 31 to rotatably support the rotary stopper 33. Fig.11 The right end of the rotating stopper 33 is rotatably connected to the rotating support shaft 36, so that the rotating stopper 33 can rotate as a whole relative to the rotating support shaft 36, thereby making the limiting end of the rotating stopper 33 (as shown in FIG. Fig.11 The left end shown in the figure can be rotated to the rotation limit position, that is, rotated to Fig.11 The horizontal position shown is Figure 5 At the position shown, the limit end of the rotary limit member 33 (such as Figure 5The right top of the rotary stopper 33 of the left movable stopper mechanism 3 is fixed to the stopper notch on the bottom side of the product lifting mechanism 4 to stop the second side of the fuel cell stack. The rotary stopper 33 can also rotate to the rotary pick-and-place position, such as Figure 5 The rotary limiter 33 on the left side shown can be rotated clockwise by at least 90° to make way for the fuel cell stack to be moved downward for removal, so that the fuel cell stack can be moved downward for removal, and the bottom plate structure of the fuel cell stack can also be moved upward for installation on the product lifting mechanism 4.

[0037] In this embodiment, a rotary locking member 37 is provided on the rotary limiter 33, which is used to lock the rotary limiter 33 on the base 1 when the rotary limiter 33 rotates to the rotary limiter position. Specifically, when the rotary limiter 33 rotates to the rotary limiter position, the rotary locking member 37 can lock the rotary limiter 33 on the base 1 to achieve the locking of the rotary limiter 33, prevent the rotary limiter 33 from rotating by itself, or rotating under the action of other components, thereby ensuring the accuracy of the limit.

[0038] In this embodiment, the pull-out limiting member 32 and the fixed support member 31 can be clearance-matched to reduce sliding friction, and can be locked by a first pull-out locking member 34 and two second pull-out locking members 35 to ensure stability.

[0039] In this embodiment, a linear bearing 68 may be provided between the pull-out limiter 32 and the fixed support member 31 , and point contact between the ball bearing and the linear shaft is achieved, so that the friction force is small and the movement accuracy is high.

[0040] Continue to see Figure 6 The fixed support member 31 includes: a bottom support seat 311, a top support seat 312, and two vertical support plates 313; wherein the bottom support seat 311 and the top support seat 312 are arranged in parallel and at intervals, and the two vertical support plates 313 are arranged side by side between the bottom support seat 311 and the top support seat 312, and a plurality of connecting rods 314 are also provided between the two vertical support plates 313 between the bottom support seat 311 and the top support seat 312 to strengthen the connection between the two vertical support plates 313 and improve the stability of the two vertical support plates 313.

[0041] Continue to see Figure 7The pull-out limit member 32 includes: a pull-out limit body 321, a pull-out plate 322 and at least two sliding rods 323; wherein the pull-out limit body 321 and the pull-out plate 322 are arranged vertically and at intervals, and each sliding rod 323 is arranged between the pull-out limit body 321 and the pull-out plate 322, and the two ends of each sliding rod 323 are respectively connected to the pull-out limit body 321 and the pull-out plate 322, for sliding connection to the fixed support member 31.

[0042] Specifically, the sliding rods 323 can be arranged horizontally and the two ends are respectively connected to the pull-out limit body 321 and the pull-out plate 322, and the connection can be achieved by welding or other methods, which is not limited in this embodiment. The pull-out limit body 321, the pull-out plate 322 and at least two sliding rods 323 form an integrated structure, which can slide relative to the fixed support member 31 as a whole, so as to apply a pulling force through the pull-out plate 322 and drive the pull-out limit member 32 to slide as a whole. Among them, the structure of the pull-out limit body 321 can refer to the structure of the limit support plate 22 and the limit baffle 23 in the fixed limit mechanism 2, and is combined to form an adjustable limit structure to facilitate limit adjustment and avoid the problem of low limit accuracy caused by tilt. A pull handle 324 can be provided on the pull-out plate 322, and a pulling force can be applied to facilitate position adjustment. In this embodiment, the sliding rod 323 slides through the sliding support plate of the vertical support plate 313 of the fixed support member 31, and the sliding rod 323 and the sliding support plate are clearance-matched and a linear bearing 68 is provided at the connection. In this embodiment, the limit baffle structure of the pull-out limit body 321 can be arranged along the second preset direction, that is, arranged along the sliding direction of the pull-out limit member 32, so as to limit the end side of the fuel cell stack.

[0043] Continue to see Figure 6 The rotary stopper 33 may include: a rotary stopper body 331, a rotary plate 332 and at least two rotary rods 333; wherein the rotary plate 332 is disposed on the rotary stopper body 331 to drive the rotary stopper body 331 to adjust the rotation position; one end of each rotary rod 333 (such as Figure 6 The upper right end as shown in the figure) is rotatably connected to the rotating support shaft 36, and in particular, the end of the rotating rod 333 has a rotating hole, which is rotatably sleeved on the rotating support shaft 36, and the other end (as shown in the figure) is rotatably connected to the rotating support shaft 36. Figure 6 The left lower end shown in the figure is connected to the rotation limit body 331, so that the rotation limit body 331 can rotate around the axis of the rotation support shaft 36 to achieve position adjustment. Among them, a rotation handle 334 can be provided on the rotation plate 332.

[0044] Continue to see Fig.10 and Fig.11The first pull-out locking member 34 may include: a pull-out fixing block 341, a pull-out locking block 342 and a pull-out locking pin 343; wherein the pull-out fixing block 341 is arranged on the fixed support member 31, and the pull-out locking block 342 is arranged on the pull-out type limiting member 32; the pull-out locking pin 343 is plugged into the pull-out fixing block 341 and the pull-out locking block 342 in a pluggable manner, and is used to lock the pull-out locking block 342 on the pull-out fixing block 341 when the pull-out type limiting member 33 is pulled to the pull-out limiting position or the pull-out pick-up and release position.

[0045] Specifically, the pull-out fixing block 341 is arranged between the two vertical support plates 313, and the two sides are respectively connected to the two vertical support plates 313; wherein, a pull-out locking hole 3411 is provided on the pull-out fixing block 341, which is adapted to the pull-out locking pin 343. The pull-out locking block 342 is arranged between the pull-out limiting body 321 and the pull-out plate 322, and the two sides are respectively connected to the pull-out limiting body 321 and the pull-out plate 322; wherein, a limit locking hole 3421 and a pick-and-place locking hole 3422 are provided on the pull-out locking block 342, which correspond to the pull-out limiting station and the pull-and-place station, respectively, and the limit locking hole 3421 and the pick-and-place locking hole 3422 are both adapted to the pull-out locking pin 343. When the pull-out limiting member 32 is pushed to the pull-out limiting position, the pull-out locking hole 3411 and the limiting locking hole 3421 are coaxially arranged, and the pull-out locking pin 343 is inserted into the pull-out locking hole 3411 and the limiting locking hole 3421, so that the pull-out fixing block 341 and the pull-out locking block 342 can be locked when the pull-out locking block 342 slides to the pull-out limiting position along with the pull-out limiting member 32. When the pull-out limiting member 32 is pulled back to the pull-out and pick-up position, the pull-out locking hole 3411 and the pick-up locking hole 3422 are coaxially arranged, and the pull-out locking pin 343 is inserted into the pull-out locking hole 3411 and the pick-up locking hole 3422, so that the pull-out fixing block 341 and the pull-out locking block 342 can be locked when the pull-out locking block 342 slides to the pull-out and pick-up position along with the pull-out limiting member 32.

[0046] In this embodiment, the structure of the second pull-out locking member 35 can refer to the structure of the first pull-out locking member 34, except that a hole is provided on the corresponding pull-out locking block for locking at the pull-out limit position.

[0047] In this embodiment, the structure of the rotating locking member 37 can refer to the structure of the first pull-out locking member 34, the difference is that a hole is provided on the corresponding pull-out locking block for locking in the rotation limit position; at the same time, the fixing member is arranged on the base 1, and when the rotating limit member 33 is rotated to the rotation limit position, the rotating limit member 33 can be locked on the base 1 through the locking pin.

[0048] See also Figure 13 to Figure 14, which shows the preferred structure of the product lifting mechanism provided by the embodiment 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 fixing seats 43; wherein the lifting plate 41 is used to support the fuel cell stack; the two positioning pin sleeves 42 and the two fixing seats 43 are respectively arranged at the four corners of the bottom of the lifting plate 41, and are used to contact and lift the two positioning pin sleeves 42 and the two fixing seats 43 through the lifting drive mechanism placed on the lower side, so as to lift the lifting plate 41; wherein the positioning pin sleeves 42 are adapted to the positioning pins on the lifting drive mechanism.

[0049] 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 each layer of components. Two positioning pin sleeves 42 and two fixing seats 43 are arranged at the bottom of the lifting plate 41 and are respectively arranged at the four corners of the lifting plate 41. The tops of the two positioning pin sleeves 42 and the two fixing seats 43 are respectively connected to the four corners of the lifting plate 41. The lifting plate 41 can be lifted by lifting the two positioning pin sleeves 42 and the two fixing seats 43, 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, so that the positioning pins on the lifting drive mechanism can be inserted and fixed on the positioning pin sleeves 42, so as to 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.

[0050] In this embodiment, a weight-reducing groove 411 is provided on the top of the lifting plate 41 facing away from the positioning pin sleeve 42 and the fixing seat 43. Specifically, the weight-reducing groove 411 can achieve weight reduction. At the same time, the weight-reducing groove 411 is arranged on the top wall of the lifting plate 41, and the fuel cell stack is supported by the solid part on the side of the weight-reducing groove 411. At the same time, the arrangement of the weight-reducing groove 411 can also make it a place to give way, the solid part supports, and the weight-reducing groove 411 gives way to ensure the support accuracy. Of course, a weight-reducing hole 412 can also be provided on the lifting plate 41.

[0051] In summary, the fuel cell stack assembly tool provided in the present embodiment limits the first side of the fuel cell stack through the fixed limiting mechanism 2; through two movable limiting mechanisms 3, when the fuel cell stack is stacked and assembled, the two movable limiting mechanisms 3 are adjusted to the limiting position, the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form an inner cavity of the tooling, so that the fuel cell stack can be limited to the inner cavity of the tooling, the first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and two end sides of the fuel cell stack are limited by the movable limiting mechanism 3, when the fuel cell stack is taken out for stacking and assembly, the two movable limiting mechanisms 3 are adjusted to the taking and placing position to realize the opening of the inner cavity of the tooling to take out the stacked fuel cell stack, that is, the overall strength of the stack tooling is enhanced through the cavity-type structure, the opening and closing structure of the movable limiting mechanism 3 allows the side guard of the tooling to be opened, which is convenient for taking and placing the stack, and the tooling is easy to restore, which solves the problem of inconvenient taking and placing of the fuel cell stack in the existing fuel cell stack assembly tooling.

[0052] In particular, through the movable limiting mechanism 3 with two positions, when the fuel cell stack is stacked and assembled, it can be adjusted to the limiting position, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form a tooling inner cavity that is compatible with the outline of the fuel cell stack, so that the fuel cell stack can be limited to 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 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; when the fuel cell stack is taken out for stacking and assembly, the two movable limiting mechanisms 3 can also be adjusted to the pick-up and put-down position, and the tooling inner cavity is open, that is, the opposite side of the fixed limiting mechanism 2 is opened, so that the fuel cell stack can be taken out from between the two movable limiting mechanisms 3. At the same time, the adjustment of the movable limiting mechanism 3 in the device can make the side of the tooling closed, realize the limitation of the stack, and can also be opened, which is convenient for taking and putting the stack, and the tooling is easy to restore, which solves the problem of inconvenient stacking of the existing fuel cell stack tooling. The device has a simple mechanical structure and low cost, which greatly reduces the cost of stacking and placing, and also greatly reduces the complexity of mechanical structure installation and subsequent maintenance. At the same time, the stacking stability is high, ensuring the accuracy of product stacking.

[0053] Furthermore, the fixed limit mechanism 2, the pull-out limit body 321 and / or the rotation limit body 331 all adopt an adjustable structure, and the tooling gap can be adjusted by adjusting the retaining edge, thereby reducing the difficulty of debugging and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy for the inner cavity size to be out of control due to excessive product stacking. It has high lateral pressure resistance and is not easy to deform.

[0054] Method Example: See also Fig.15 , which is a schematic flow chart of a fuel cell stack assembly method provided by an embodiment of the present invention. As shown in the figure, the stack assembly method uses the above-mentioned fuel cell stack assembly tool to limit the stack, and includes the following steps: Step S1, adjusting both movable limiting mechanisms to the limiting positions, and surrounding the fixed limiting mechanism and the two movable limiting mechanisms to form a tooling inner cavity.

[0055] Specifically, first, the debugged tooling is pre-placed on a lifting drive mechanism that can lift the product lifting mechanism 4; then, the two movable limiting mechanisms 3 are adjusted to the limiting positions, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form the tooling inner cavity.

[0056] Step S2, controlling the product lifting mechanism to rise to a preset stacking position.

[0057] Specifically, the product lifting plate mechanism 4 is lifted to a preset stacking position by the lifting drive mechanism, for example, above the tooling so that its upper surface is 10 mm away from the upper limit of the tooling rib.

[0058] Step S3, 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 installation of the fuel cell stack; wherein, during the stacking installation process of each single cell, the product lifting mechanism is lowered by the thickness of the single cell each time.

[0059] Specifically, the stacks are stacked in sequence according to the assembly order until the stack is completed. After each layer is stacked, the product lifting mechanism 4 descends to a specific height. After completing processes such as pressurizing the stack, locking screws or welding, and airtightness testing, the conditions for unloading the stack are met.

[0060] Step S4, adjusting both movable limiting mechanisms to the pick-and-place position to open the inner cavity of the tooling, and taking out the fuel cell stack from the other side of the fixed limiting mechanism.

[0061] Finally, the plug-in pin of the movable limiting mechanism 3, i.e., the pull-out locking pin 343, the pin of the second pull-out locking fixture 35, and the pin of the rotating locking fixture 37 are taken out, and the movable limiting mechanism 3 is opened outward, i.e., the pull-out limiting member 32 is pulled to the pull-out pick-up and placement station and the rotating limiting member 33 is rotated to the rotation pick-up and placement station to provide space for the battery stack to be taken and placed, and the battery stack is opened from the open position, i.e., the other side of the fixed limiting mechanism (such as Figure 5That is, it is lifted up to a very small height so that there is a gap between the fuel cell stack and the product lifting mechanism, and then the fuel cell stack is translated downward so that the fuel cell stack is taken out from between the fixed limiting mechanism 2 and the two movable limiting mechanisms 3; after taking out the stack, the plug-in pins are used to position and restore the tooling for the next production.

[0062] In summary, the fuel cell stack assembly tool provided in the present embodiment limits the first side of the fuel cell stack through the fixed limiting mechanism 2; through two movable limiting mechanisms 3, when the fuel cell stack is stacked and assembled, the two movable limiting mechanisms 3 are adjusted to the limiting position, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are arranged to form an inner cavity of the tooling, so that the fuel cell stack can be limited to the inner cavity of the tooling, and the first side of the fuel cell stack is limited by the fixed limiting mechanism 2, and the second side and two end sides of the fuel cell stack are limited by the movable limiting mechanism 3. When the fuel cell stack is taken out for stacking and assembly, the two movable limiting mechanisms 3 are adjusted to the taking and placing position to realize the opening of the inner cavity of the tooling to take out the stacked fuel cell stack. That is to say, the overall strength of the stack tooling is enhanced through the cavity-type structure, and the opening and closing structure of the movable limiting mechanism 3 allows the side guard of the tooling to be opened, which is convenient for taking and placing the stack, and the tooling can be restored conveniently, which solves the problem of inconvenient taking and placing of the existing fuel cell stack assembly tooling.

[0063] In particular, through the movable limiting mechanism 3 with two positions, when the fuel cell stack is stacked and assembled, it can be adjusted to the limiting position, and the fixed limiting mechanism 2 and the two movable limiting mechanisms 3 are surrounded to form a tooling inner cavity that is compatible with the outline of the fuel cell stack, so that the fuel cell stack can be limited to 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 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; when the fuel cell stack is taken out for stacking and assembly, the two movable limiting mechanisms 3 can also be adjusted to the pick-up and put-down position, and the tooling inner cavity is open, that is, the opposite side of the fixed limiting mechanism 2 is opened, so that the fuel cell stack can be taken out from between the two movable limiting mechanisms 3. At the same time, the adjustment of the movable limiting mechanism 3 in the device can make the side of the tooling closed, realize the limitation of the stack, and can also be opened, which is convenient for taking and putting the stack, and the tooling is easy to restore, which solves the problem of inconvenient stacking of the existing fuel cell stack tooling. The device has a simple mechanical structure and low cost, which greatly reduces the cost of stacking and placing, and also greatly reduces the complexity of mechanical structure installation and subsequent maintenance. At the same time, the stacking stability is high, ensuring the accuracy of product stacking.

[0064] Furthermore, the fixed limit mechanism 2, the pull-out limit body 321 and / or the rotation limit body 331 all adopt an adjustable structure, and the tooling gap can be adjusted by adjusting the retaining edge, thereby reducing the difficulty of debugging and improving the tooling accuracy. That is, the tooling positioning adjustment accuracy is high, and it is not easy for the inner cavity size to be out of control due to excessive product stacking. It has high lateral pressure resistance and is not easy to deform.

[0065] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the 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 cannot be understood as a limitation on the present invention.

[0066] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of 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.

[0067] Obviously, those skilled in the art can make various changes and modifications 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 equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fuel cell stacking tool, characterized in that: include: 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 are arranged on the base at intervals, and each movable limiting mechanism is arranged on the base in a movable manner, each movable limiting mechanism has a taking-and-putting position and a limiting position, and when the fuel cell stack is stacked and assembled, the two movable limiting mechanisms are adjusted to the limiting position, and the fixed limiting mechanism and the two movable limiting mechanisms are surrounded to form a tooling inner cavity, so that the fuel cell stack can be limited in the tooling inner cavity; when the fuel cell stack is taken out of the stack assembly, the two movable limiting mechanisms are adjusted to the taking-and-putting position to realize the opening of the tooling inner cavity, so as to take out the stacked fuel cell stack; The 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, so as to support the fuel cell stack in the inner cavity of the tooling, and can be lifted to a corresponding height, and gradually descended during the layer-by-layer stacking process of the fuel cell stack, so as to lower and stack each layer of single cells of the fuel cell stack layer by layer.

2. The fuel cell stack assembly tool according to claim 1, characterized in that: The movable limiting mechanism comprises: Fixing support members; A pull-out limiting member is connected to the fixed support member in a slidable manner along a second preset direction, and is used to be pushed to a pull-out limiting position to limit the end side of the fuel cell stack, and can also be pulled back to a pull-out pick-up and put position; wherein the end side of the fuel cell stack is perpendicular to the side of the fuel cell stack; The rotary limit member is rotatably connected to the fixed support member, and is used to rotate to a rotary limit position to limit the second side of the fuel cell stack, and can also be rotated to a rotary pick-and-place position to translate and remove the stacked and assembled fuel cell stack.

3. The fuel cell stack assembly tool according to claim 2, characterized in that: The pull-out limiter is provided with a first pull-out locking member, which is used to lock the pull-out limiter on the fixed support member when the pull-out limiter is pushed to the pull-out limit position and / or withdrawn to the pull-out pick-up and put position; and / or, The pull-out limiting member is provided with a plurality of second pull-out locking members, which are used to lock the pull-out limiting member on the fixed support member when the pull-out limiting member is pushed to the pull-out limiting position.

4. The fuel cell stack assembly tool according to claim 3, characterized in that: The first drawer lock firmware comprises: A pull-out fixing block provided on the fixing support; A pull-out locking block provided on the pull-out limiting member; The pull-out locking pin is plugged into the pull-out fixing block and the pull-out locking block in a pluggable manner, and is used to lock the pull-out locking block on the pull-out fixing block when the pull-out limiting member is pulled to the pull-out limiting position or the pull-out pick-up and release position.

5. The fuel cell stack assembly tool according to claim 4, characterized in that: The pull-out fixing block is provided with a pull-out locking hole, and the pull-out locking block is provided with a limit locking hole and a pick-up locking hole, which correspond to the pull-out limit station and the pull-out pick-up station respectively; When the pull-out limiting member is pushed to the pull-out limiting position, the pull-out locking pin is inserted into the pull-out locking hole and the pick-and-place locking hole; When the pull-out type limiting member is withdrawn to the pull-out pick-up and placement station, the pull-out locking pin is inserted into the pull-out locking hole and the pick-up and placement locking hole.

6. The fuel cell stack assembly tool according to any one of claims 1 to 5, characterized in that: The product lifting mechanism comprises: A lifting plate, used to support the fuel cell stack; Two positioning pin sleeves and two fixing seats are respectively arranged at the four corners of the bottom of the jacking plate, and are used to contact and lift the two positioning pin sleeves and the two fixing seats through a jacking drive mechanism arranged on the lower side, so as to lift the jacking plate; wherein the positioning pin sleeves are adapted to the positioning pins on the jacking drive mechanism.

7. The fuel cell stack assembly tool according to any one of claims 1 to 5, characterized in that: The fixed limiting mechanism includes: Fixed seat; A limiting support plate, arranged on the fixing seat; A limit baffle 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 verticality between the limit baffle and the base to ensure the stacking accuracy of the fuel cell stack.

8. The fuel cell stack assembly tool according to claim 7, characterized in that: The limit baffle plate is connected to the limit support plate by at least two adjustment connectors arranged at intervals along the length direction of the limit support plate; The limit support plate is provided with a waist-shaped hole for adjusting the position of the adjustment connecting piece, and the limit baffle is provided with a mounting hole. The adjustment connecting piece is passed through the waist-shaped hole and connected to the mounting hole, 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.

9. The fuel cell stack assembly tool according to any one of claims 1 to 5, characterized in that: The rotary limiter is provided with a rotary locking piece, which is used to lock the rotary limiter on the base when the rotary limiter rotates to the rotary limiter position.

10. A fuel cell stack assembly method, characterized in that: The method of limiting the position of a fuel cell stack by using the fuel cell stack assembly tool as claimed in any one of claims 1 to 9 comprises the following steps: The two movable limiting mechanisms are both adjusted to the limiting positions, and the fixed limiting mechanism and the two movable limiting mechanisms are surrounded to form a tooling inner cavity; Control the product lifting mechanism to rise to the preset stacking position; Lift 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 of each single cell, the height of each descent of the product lifting mechanism is the thickness of the single cell; The two movable limiting mechanisms are both adjusted to the pick-and-place positions to open the inner cavity of the tooling, and the fuel cell stack is taken out from the other side of the fixed limiting mechanism.

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