Module stacking method, stacking tray and module stacking device

Abstract

The present invention belongs to the field of manufacturing secondary batteries, and in particular, relates to a module stacking method, a stacking tray, and a module stacking device. In order to conveniently manufacture modules with different numbers of rows, the present invention proposes a module stacking method. First, each row of battery cells is placed on each sub-tray with the same number of battery cell rows, and each row of battery cells is clamped by a longitudinal clamping mechanism; secondly, a double-sided adhesive tape is pasted on one of the two opposite end faces of two adjacent rows of battery cells; then, a transverse clamping mechanism is used to push the battery cells and the sub-tray to move in the front-to-back direction and clamp all the battery cells; finally, all the sub-trays are assembled into a whole to form a stacking tray. The present invention also proposes a stacking tray and a module stacking device suitable for the module stacking method. Modules with different numbers of rows can be manufactured by changing the number of sub-trays, and there is no need to manufacture stacking trays of multiple different specifications, which is low in cost and easy to manage on site.

Description

Technical Field

[0001] The present invention belongs to the field of manufacturing secondary batteries, and in particular relates to a module stacking method, a stacking tray and a module stacking device. Background Art

[0002] With the continuous development of technology, in order to improve the volume energy density and weight energy density of battery packs, battery modules have gradually developed from single-row modules to double-row modules. At present, double-row modules have been widely used in production practice. With the further development of technology, three-row modules and four-row modules have also become possible.

[0003] A module stacking device is required when stacking battery modules. When stacking single-row battery modules, it is only necessary to place the battery cells on the stacking tray and use a longitudinal clamping mechanism to clamp the entire row of battery cells so that the entire row of battery cells are bonded together. When stacking double-row modules, three-row modules or more rows of modules, it is necessary not only to use the longitudinal clamping mechanism to clamp the entire row of battery cells, but also to use a transverse clamping mechanism to squeeze all the clamped rows of battery cells together.

[0004] For example, a Chinese invention patent application with application publication number CN115882148A and application publication date 2023.03.31 discloses a module stacking device, which includes a workbench with a mounting table, on which a positioning plate and two extrusion assemblies are mounted, and the two extrusion assemblies are symmetrically arranged relative to the positioning plate. Each extrusion assembly includes two longitudinal clamping devices (equivalent to a longitudinal direct-acting drive mechanism) whose output ends can move in the left and right directions and one transverse clamping device (equivalent to a transverse direct-acting drive mechanism) whose output ends can move in the front and back directions. Among them, the two longitudinal clamping devices in each extrusion assembly respectively constitute a longitudinal clamping mechanism, and the two transverse clamping devices in the two extrusion assemblies together constitute a transverse clamping mechanism.

[0005] When the double-row modules are assembled by using the module stacking device, the two rows of battery cells are first stacked and placed on both sides of the positioning plate, and each row of battery cells is made to be close to the plate surface of the positioning plate; then, the longitudinal pressing devices (i.e., each longitudinal clamping mechanism) in each extrusion assembly are used to extrude each row of battery cells in the left and right directions respectively, so as to eliminate the assembly gaps within each row of battery cells and improve the subsequent processing yield of the double-row modules; then, the positioning plate is removed, and a double-sided glued PC (Polycarbonate) film (equivalent to a tape) is mounted on the side opposite to the other row of battery modules of one row of battery modules; finally, each longitudinal clamping mechanism is used to loosen each row of battery cells, and two transverse pressing devices (i.e., transverse clamping mechanisms) are used to clamp the two rows of battery cells (i.e., all battery cells) in the front-to-back direction, so that the two sides of the PC film are respectively bonded to the two rows of battery cells, and the assembly of the double-row modules is completed.

[0006] After the double-row module is assembled, it is necessary to hoist the double-row module to the next process. During the hoisting process, since there is no support at the bottom of the double-row module, some of the cells in the double-row module will move downward for a distance, resulting in poor flatness at the bottom of the double-row module. At the same time, the module stacking device and the module stacking method contained in the module stacking device can only stack double-row modules, and have no scalability, and cannot be applied to modules with three, four or more rows. At the same time, when stacking cells using stacking trays, different sizes of trays need to be selected for battery modules with different rows, and there are many types of trays, resulting in high costs and inconvenient on-site management. Summary of the invention

[0007] The object of the present invention is to provide a module stacking method to solve the technical problems that the existing module stacking device has no scalability and the existing module stacking method needs to manufacture trays of various sizes, which is costly and difficult to manage.

[0008] The object of the present invention is to provide a stacking tray to solve the same technical problem as above.

[0009] The object of the present invention is to provide a module stacking device to solve the same technical problem as above.

[0010] To achieve the above-mentioned purpose, the technical solution of the module stacking method provided by the present invention is:

[0011] A module stacking method comprises the following steps:

[0012] Step S1, placing each row of battery cells on each sub-tray with the same number of battery cell rows, and clamping each row of battery cells using a longitudinal clamping mechanism to bond each row of battery cells together;

[0013] Step S2, defining the arrangement direction of two adjacent battery cells in each row of battery cells as the left-right direction, each sub-tray is movably arranged on a workbench along the front-back direction, and a double-sided adhesive tape is pasted on one of the two adjacent end surfaces of the two adjacent rows of battery cells;

[0014] Step S3, each longitudinal clamping mechanism loosens each row of battery cells, and then uses the transverse clamping mechanism to clamp all battery cells, and the transverse clamping mechanism pushes the battery cells on the sub-tray, and the friction between the battery cells and the sub-tray drives the sub-tray to move in the front-to-back direction, so that all sub-trays are in contact and all battery cells are bonded together;

[0015] Step S4, assembling all the sub-pallets into a whole and forming a stacking pallet, so as to facilitate the overall hoisting of the stacking pallet later;

[0016] In step S1, a set distance is provided between adjacent sub-trays, or, in step S2, the sub-trays are moved to ensure a set distance between two adjacent sub-trays to provide space for pasting the tape film;

[0017] The stacking tray includes at least n sub-trays arranged in the front-to-back direction and used to support different rows of battery cells respectively, n≥2, the width of each sub-tray in the front-to-back direction matches the width of each row of battery cells in the front-to-back direction, adjacent sub-trays are connected by mortise and tenon, each sub-tray has a horizontally extending connecting tenon, and the connecting tenon is provided with a through hole that passes through the connecting tenon in the up-down direction. The stacking tray also includes a fixing pin that is simultaneously inserted into the through holes of all the connecting tenons between adjacent sub-trays so as to detachably and fixedly connect the adjacent sub-trays; the sub-tray at the front end and the sub-tray at the rear end are provided with a sling connection structure for cooperating with a sling.

[0018] Furthermore, each sub-tray includes a support plate for supporting the battery cells and two vertical plates located at both ends of the support plate. The upper end of each vertical plate is provided with an avoidance groove extending in the up and down direction for avoiding the detachable clamping member when in use, and the connecting tenon is arranged on the vertical plate.

[0019] Furthermore, the sling connection structure is a hook or a ring vertically installed on the upper end of the vertical plate.

[0020] Furthermore, adjacent support plates are matched with mortise and tenon joints, one of the support plates is provided with a supporting tenon extending in the left-right direction, and the other support plate is provided with a mortise hole matching the supporting tenon.

[0021] Furthermore, the lower end of the support plate is provided with a limiting piece for limiting cooperation with the limiting holes on each mounting plate; or, the lower end of the support plate is provided with a limiting hole for limiting cooperation with the limiting piece on each mounting plate.

[0022] Furthermore, the workbench includes a table body and a mounting plate that cooperates with the table body to guide movement along the front-to-back direction, and the width of each mounting plate along the front-to-back direction matches the width of each sub-pallet; each mounting plate is provided with a set of longitudinal clamping mechanisms, and each sub-pallet is placed on a corresponding mounting plate, and one of the mounting plate and the sub-pallet is provided with a limit piece, and the other is provided with a limit hole that matches the limit piece to limit the relative position of the mounting plate and the sub-pallet.

[0023] Furthermore, in step S1, each row of battery cells is provided with one or a pair of detachable clamping members, and the longitudinal clamping mechanism clamps each row of battery cells via the detachable clamping members.

[0024] The module stacking method provided by the present invention has the following beneficial effects: the present invention is a pioneering invention. When stacking n rows of modules, n sub-trays are used to support different rows of cells respectively, and after the modules are stacked, the n sub-trays are assembled into a whole to facilitate later hoisting. When stacking modules of different rows, only different numbers of sub-trays need to be selected, which can reduce the types of pallets, reduce costs and facilitate on-site management.

[0025] To achieve the above-mentioned purpose, the technical solution of stacking trays provided by the present invention is:

[0026] A stacking tray comprises at least n sub-trays arranged in a front-to-back direction and respectively used to support different rows of battery cells, where n≥2, the width of each sub-tray in the front-to-back direction matches the width of each row of battery cells in the front-to-back direction, adjacent sub-trays are connected by mortise and tenon, each sub-tray has a horizontally extending connecting tenon, and the connecting tenon is provided with a through hole that passes through the connecting tenon in an up-down direction. The stacking tray also comprises a fixing pin that is simultaneously inserted into the through holes of all the connecting tenons between adjacent sub-trays so as to detachably and fixedly connect adjacent sub-trays; a sling connection structure for cooperating with a sling is provided on the sub-tray at the front end and the sub-tray at the rear end.

[0027] Furthermore, each sub-tray includes a support plate for supporting the battery cells and two vertical plates located at both ends of the support plate. The upper end of each vertical plate is provided with an avoidance groove extending in the up and down direction for avoiding the detachable clamping member when in use, and the connecting tenon is arranged on the vertical plate.

[0028] Furthermore, the sling connection structure is a hook or a ring vertically installed on the upper end of the vertical plate.

[0029] Furthermore, adjacent support plates are matched with mortise and tenon joints, one of the support plates is provided with a supporting tenon extending in the left-right direction, and the other support plate is provided with a mortise hole matching the supporting tenon.

[0030] Furthermore, the lower end of the support plate is provided with a limiting piece for limiting cooperation with the limiting holes on each mounting plate; or, the lower end of the support plate is provided with a limiting hole for limiting cooperation with the limiting piece on each mounting plate.

[0031] The beneficial effects of the stacking tray provided by the present invention are as follows: the present invention is an improved invention. Adjacent sub-trays can be docked in the horizontal direction, and after docking, the adjacent sub-trays can be fixedly connected by fixing pins. The stacking tray is expandable, and by increasing or decreasing the number of sub-trays, the stacking tray can support modules with different rows of battery cells. After the stacking tray is applied to the module stacking method, when hoisting n rows of modules, the hoist hoists the stacking tray, and the stacking tray supports n rows of modules, thereby ensuring the flatness of the bottom of the n rows of modules. Compared with the technical solution of using a completely different integrated stacking tray when manufacturing modules with different numbers of rows, the stacking tray in the present invention is a split structure, which can adapt to modules with different numbers of rows by changing the number of sub-trays, and does not need to manufacture a large number of stacking trays of different specifications, which can save mold costs and save costs.

[0032] To achieve the above-mentioned purpose, the technical solution of the module stacking device provided by the present invention is:

[0033] A module stacking device comprises a workbench, on which are mounted a longitudinal clamping mechanism for clamping a row of battery cells in the left-right direction and a transverse clamping mechanism for clamping all battery cells in the front-to-back direction, wherein n longitudinal clamping mechanisms are arranged in the front-to-back direction, and n≥2; the module stacking device also comprises a stacking tray for simultaneously supporting n rows of battery cells, wherein the stacking tray comprises at least n sub-trays arranged in the front-to-back direction and respectively used to support different rows of battery cells, and n≥2, wherein the width of each sub-tray in the front-to-back direction matches the width of each row of battery cells in the front-to-back direction, wherein adjacent sub-trays are connected by mortise and tenon joints, wherein each sub-tray has a horizontally extending connecting tenon, and each connecting tenon is provided with a through hole penetrating the connecting tenon in the up-down direction, and wherein the stacking tray also comprises a fixing pin for simultaneously inserting into the through holes of all connecting tenons between adjacent sub-trays, so as to detachably and fixedly connect adjacent sub-trays; a sling connection structure for cooperating with a sling is provided on the sub-tray at the front end and the sub-tray at the rear end.

[0034] Furthermore, the longitudinal clamping mechanism includes a longitudinal direct-acting drive mechanism whose two output ends can move in the left-right direction, and the module stacking device also includes 2n detachable clamping members, and the 2n detachable clamping members are paired in pairs to form n pairs of detachable clamping members for clamping a row of battery cells; in the left-right direction, for a pair of detachable clamping members, each detachable clamping member is respectively cooperated with the output end stop of two longitudinal direct-acting drive mechanisms in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism drives a pair of detachable clamping members to move left and right and change the spacing between the pair of detachable clamping members.

[0035] Furthermore, the longitudinal clamping mechanism includes a longitudinal direct-acting drive mechanism whose output end can move in the left-right direction and a longitudinal fixing seat fixed on the workbench; the module stacking device also includes 2n detachable clamping members, and the 2n detachable clamping members are paired in pairs to form n pairs of detachable clamping members for clamping a row of battery cells; in the left-right direction, for a pair of detachable clamping members, one of the detachable clamping members cooperates with the longitudinal fixing seat stopper, and the other detachable clamping member cooperates with the output end stopper of the longitudinal direct-acting drive mechanism in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism drives the corresponding detachable clamping member to move left-right and change the spacing between a pair of detachable clamping members.

[0036] Furthermore, each sub-tray includes a support plate for supporting the battery cells and two vertical plates located at both ends of the support plate. The upper end of each vertical plate is provided with an avoidance groove extending in the up and down directions to avoid the corresponding detachable clamping parts. The left and right ends of the detachable clamping parts are respectively located on the left and right sides of the corresponding vertical plates; the connecting tenons are arranged on the vertical plates.

[0037] Furthermore, the workbench includes a table body and n mounting plates that cooperate with the table body to guide movement along the front-rear direction, and each mounting plate is provided with a longitudinal clamping mechanism and a sub-tray.

[0038] Furthermore, each mounting plate is provided with a limit hole, and the lower end of the support plate is provided with a limit pin for limiting cooperation with the limit holes on each mounting plate; or, the lower end of the support plate is provided with a limit hole, and each mounting plate is provided with a limit pin for limiting cooperation with the limit holes on each support plate.

[0039] Furthermore, the detachable clamping member includes a main body portion for being placed on a support plate and at least two force transmission rods located on one side of the main body portion and for cooperating with a longitudinal direct-acting drive mechanism or a longitudinal fixed seat stopper, wherein the two force transmission rods are arranged along the front-to-back direction, and the two force transmission rods are respectively located in different avoidance grooves when in use, and the groove width of the avoidance groove matches the outer diameter of the force transmission rod to form a guide groove for providing guidance for the force transmission rod.

[0040] Furthermore, the transverse clamping mechanism includes a transverse direct-acting drive mechanism whose output end can move in the front-to-back direction and a transverse fixing seat fixed on the workbench, or the transverse clamping mechanism includes two transverse direct-acting drive mechanisms whose output ends can move in the front-to-back direction; each transverse direct-acting drive mechanism is provided with a transverse pressure plate for pressing the battery cell, an isosceles tripod is connected to the output end between the transverse pressure plate and the transverse direct-acting drive mechanism, a plate surface of the transverse pressure plate close to the transverse direct-acting drive mechanism is fixedly connected to the bottom edge of the isosceles tripod, and the output end of the transverse direct-acting drive mechanism is fixedly connected to the top angle of the isosceles tripod.

[0041] The beneficial effects of the module stacking device provided by the present invention are as follows: the present invention is an improved invention. The module stacking device is scalable, so that each longitudinal clamping mechanism only clamps one row of battery cells. When manufacturing n rows of modules (n≥2, double-row modules when n=2, and multi-row modules when n≥3), n longitudinal clamping mechanisms can clamp n rows of battery cells to eliminate the assembly gap between the internal battery cells of each row of battery cells, thereby improving the subsequent processing yield of the n rows of modules. At the same time, n sub-trays can support n rows of battery cells after being assembled together. When stacking modules of different numbers of rows, only different numbers of sub-trays need to be selected, which can reduce the types of trays, reduce costs and facilitate on-site management. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A front view of a specific embodiment of a stacking tray of the present invention;

[0043] Figure 2 A schematic structural diagram of a specific embodiment of a stacking tray of the present invention at an angle;

[0044] Figure 3 A schematic structural diagram of a stacking tray according to another embodiment of the present invention;

[0045] Figure 4 for Figure 3 DD view in the figure;

[0046] Figure 5 It is a structural schematic diagram of the first type of vertical plate in a specific embodiment of the stacking tray of the present invention;

[0047] Figure 6 It is a structural schematic diagram of a second type of vertical plate in a specific embodiment of a stacking tray of the present invention;

[0048] Figure 7 It is a structural schematic diagram of a third type of vertical plate in a specific embodiment of a stacking tray of the present invention;

[0049] Figure 8 A top view of a specific embodiment of the module stacking device of the present invention;

[0050] Fig. 9 for Figure 8 A magnified view of the structure at center A;

[0051] Fig.10 It is a structural schematic diagram of a specific embodiment of the module stacking device of the present invention;

[0052] Fig.11 for Fig.10 A magnified view of the structure at B in the middle;

[0053] Fig.12 for Fig.10 A magnified view of the structure at C in the middle;

[0054] Fig.13 It is a structural schematic diagram of the connection between the detachable clamping member and the longitudinal direct-acting drive mechanism in a specific embodiment of the module stacking device of the present invention;

[0055] Fig.14 for Fig.13 Schematic diagram of the structure of the moving seat.

[0056] Description of reference numerals:

[0057] 1. Workbench; 11. Mounting plate; 12. Linear guide rail; 21. Horizontal direct-acting drive mechanism; 22. Isosceles triangle; 23. Horizontal pressure plate; 24. Rib plate; 3. Horizontal fixing seat; 4. Longitudinal fixing seat; 51. Support plate; 52. Vertical plate; 521. Avoidance groove; 522. Slot; 523. Lifting threaded hole; 524. Through hole; 525. Spare threaded hole; 53. Lifting ring; 54. Limit rod; 55. Insulating support plate; 6. Removable clamp; 61. Main body; 62. Force transmission rod; 7. Longitudinal direct-acting drive mechanism; 71. Longitudinal movable seat; 711. Socket; 8. Fixing pin. DETAILED DESCRIPTION

[0058] In order to solve the problems in the background technology, the core inventive concept of the present invention is: assembling n sub-trays that respectively support rows of battery cells into a stacking tray (n≥2). By changing the number of sub-trays, the stacking tray can be suitable for modules with different numbers of rows. There is no need to manufacture stacking trays of multiple different specifications, which is low-cost and easy to manage on-site.

[0059] The present invention is further described in detail below in conjunction with embodiments.

[0060] Specific embodiments of the stacking tray provided by the present invention:

[0061] like Figure 1-4 As shown, the stacking tray includes at least n sub-trays arranged in the front-to-back direction and respectively used to support different rows of battery cells, n≥2, adjacent sub-trays are connected by mortise and tenon, each sub-tray has a horizontally extending connecting tenon, and the connecting tenon is provided with a through hole 524 that passes through the connecting tenon in the up-down direction. The stacking tray also includes a fixing pin 8 for simultaneously inserting into the through holes 524 of all the connecting tenons between adjacent sub-trays so as to detachably and fixedly connect adjacent sub-trays; the sub-tray at the front end and the sub-tray at the rear end are provided with a sling connection structure for cooperating with a sling.

[0062] The stacking tray is expandable. By increasing or decreasing the number of sub-trays, the stacking tray can support modules with different rows of cells. After the stacking tray is applied to the module stacking device, when hoisting n rows of modules, the hoist hoists the stacking tray, and the stacking tray supports n rows of modules, thereby ensuring the flatness of the bottom of the n rows of modules. At the same time, adjacent sub-trays can be docked in the horizontal direction. After docking, the adjacent sub-trays can be fixedly connected using the fixing pins 8.

[0063] like Figure 1-7 As shown, in this embodiment, the sub-trays may be of one, two or three types, and the sub-trays may be divided into three types: front terminal trays, middle sub-trays and rear terminal trays. When assembling stacked trays, only n middle sub-trays may be used for assembly; n-1 middle sub-trays and front terminal trays (or rear terminal trays) may also be used for assembly; or n-2 middle sub-trays, front terminal trays and rear terminal trays may be used for assembly.

[0064] Compared with the technical solution of using completely different integrated stacking pallets when manufacturing modules with different numbers of rows, the stacking pallet in the present invention is a split structure. By changing the number of sub-pallets, it can adapt to modules with different numbers of rows. There is no need to manufacture a large number of stacking pallets of different specifications, which can save mold costs and save costs.

[0065] like Figure 1-7 As shown, in order to facilitate the assembly and disassembly of the sub-trays, as a specific embodiment, each sub-tray includes a support plate 51 for supporting the battery cells and two vertical plates 52 located at both ends of the support plate 51, and the upper end of each vertical plate 52 is provided with an avoidance groove 521 extending in the up and down directions for avoiding the detachable clamping member 6 when in use, and a connecting tenon is provided on the vertical plate 52. Adjacent vertical plates 52 are detachably fixedly connected, and the two ends of the sub-tray can be fixedly connected through the vertical plate 52.

[0066] like Figure 3-4 As shown, in order to better support the support plate 51, as a specific embodiment, a slot 522 is provided at one end of the vertical plate 52 close to the corresponding support plate 51, and the two ends of the support plate 51 are respectively inserted into the slots 522 on the corresponding vertical plate 52. Of course, in other specific embodiments, the vertical plate 52 can also be an "L"-shaped plate, and the vertical plate 52 includes a horizontal part and a vertical part, and the horizontal part is used to support the support plate 51.

[0067] Specifically, Figure 3-5 As shown, there are two connecting tenons on the vertical plate 52 of the rear terminal tray. In this case, the rear terminal tray needs to have two vertical plates 52, one of which has a slot 522 on the vertical plate 52 located on the left side of the vertical plate 52, and the other has a slot 522 on the vertical plate 52 located on the right side of the vertical plate 52; Figure 3-4 and Figure 6As shown, on the vertical plate 52 of the middle sub-tray, two connecting tenons are provided at one end of the vertical plate 52, and one connecting tenon is provided at the other end; Figure 3-4 and Figure 7 As shown, there is a connecting tenon on the vertical plate 52 of the front terminal tray. Figure 3-4 In the embodiment, the middle sub-tray and the front sub-tray also need to have two types of vertical plates 52.

[0068] at this time, Figure 3 The structure in the embodiment is a mirror-symmetrical structure, and the vertical plates 52 at the left and right ends of the stacking tray are mirror-symmetrical; of course, in other specific embodiments, refer to Figure 3-7 As shown, only three types of vertical plates 52 can be made. In this case, the vertical plate 52 assembled at the left end of the stacking tray can be rotated and installed to the right end of the stacking tray. At this time, the vertical plate 52 at the left end of the stacking tray and the vertical plate 52 at the right end of the stacking tray are symmetrical in center; or only three types of vertical plates 52 are made and used. Figure 6 A riser 52 is shown.

[0069] Of course, in other specific embodiments, refer to Figure 1-7 As shown, threaded holes may also be provided at the upper ends of two adjacent vertical plates 52, and then the two adjacent vertical plates 52 and the connecting plate are fixedly connected by bolts, so that the two adjacent vertical plates 52 are fixed together by the connecting plate.

[0070] like Figure 1-7 As shown, in order to simplify the structure, the sling connection structure is a hook or ring 53 vertically installed on the upper end of the vertical plate 52, and a lifting threaded hole 523 is provided on the upper end surface of the vertical plate 52. The hook or ring 53 is installed on the lifting threaded hole 523, which has a simple structure. At the same time, the ring 53 or hook is vertically arranged on the upper end of the vertical plate 52. When the number of sub-pallets is increased, the hook and ring 53 will not interfere with the newly added sub-pallets. Of course, the sling connection structure can also be a lifting hole set on the vertical plate 52.

[0071] like Figure 5-7 As shown, the vertical plate 52 is also provided with a spare threaded hole 525 for horizontally installing a hook or a lifting ring 53. After the spare threaded hole 525 is used to install the hook and the lifting ring 53, when the number of sub-trays is increased, it is necessary to disassemble the front terminal tray and the middle sub-tray, and install the newly added sub-tray between the front terminal tray and the middle sub-tray.

[0072] like Figure 1-7As shown, in order to improve the maximum load-bearing capacity of the stacking tray, as a specific implementation, the adjacent pallets 51 are matched with mortise and tenon, one of the pallets 51 is provided with a supporting tenon extending in the left-right direction, and the other pallet 51 is provided with a mortise that matches the supporting tenon, thereby enhancing the structural strength of the stacking tray and improving the maximum load-bearing capacity of the stacking tray. Of course, in other specific implementations, the pallet 51 can also be a rectangular pallet, and the two opposite vertical side surfaces of the adjacent pallets 51 are face-to-face. At this time, each pallet 51 bears pressure separately, which is suitable for the case where the number of cells in one row of n-row modules is small.

[0073] Reference Figure 1-7 As shown, in other specific embodiments, when the adjacent pallets 51 are mortise and tenoned, vertically extending through holes can also be provided on the supporting tenons of the adjacent pallets 51, and the fixing pins 8 can be used to simultaneously pass through the two adjacent pallets 51, so as to fix the two adjacent pallets 51 in connection. In this case, the sub-pallet does not include the vertical plate 52.

[0074] like Figure 1-7 As shown, in order to conveniently limit the position of the stacked trays, the lower end of the support plate 51 is provided with a limit pin for limiting the position with the limit hole on each mounting plate 11. Specifically, the support plate 51 is provided with a limit through hole 524 that passes through the support plate 51 in the up-down direction, and a limit rod 54 for limiting the position with the workbench 1 is installed in the limit through hole 524. An insulating support plate 55 is installed on the upper surface of the support plate 51, and the limit rod 54 constitutes the limit pin. Of course, in other specific embodiments, the limit pin can also be a pin fixed on the lower end surface of the support plate 51; or, the limit pin is set on the mounting plate 11, and the limit hole is set on the support plate 51.

[0075] In actual use, the workbench 1 is provided with a limit hole, and the limit rod 54 is inserted into the limit hole to limit the position of the stacking tray, which is convenient for determining the relative position of the stacking tray, the longitudinal clamping mechanism and the transverse clamping mechanism, and avoids the stacking tray, the longitudinal clamping mechanism and the transverse clamping mechanism from being misaligned and causing the module to be unable to be assembled. At the same time, the insulating support plate 55 can cover the limit perforation 524 to avoid interference between the limit perforation 524 and the battery cell. Among them, the support plate 51 is supported by steel and has a high structural strength, and the insulating support plate 55 is made of insulating resin.

[0076] The specific embodiment of the module stacking device provided by the present invention is as follows:

[0077] In reference Figure 1-7 On the basis of Figure 8-14As shown, the module stacking device includes a workbench 1, on which are installed a longitudinal clamping mechanism for clamping a row of battery cells along the left-right direction and a transverse clamping mechanism for clamping all battery cells along the front-to-back direction, and n longitudinal clamping mechanisms are arranged along the front-to-back direction, n ≥ 2; the module stacking device also includes a stacking tray for supporting n rows of battery cells at the same time, and the specific structure of the stacking tray is the same as the structure of the stacking tray in the specific embodiment of the stacking tray of the present invention, which will not be repeated here.

[0078] The module stacking device is scalable, so that each longitudinal clamping mechanism only clamps one row of cells. When manufacturing n rows of modules (n≥2, double-row modules when n=2, and multi-row modules when n≥3), n longitudinal clamping mechanisms can clamp n rows of cells to eliminate the assembly gaps between cells in each row of cells, thereby improving the subsequent processing yield of n rows of modules. At the same time, n sub-trays can support n rows of cells after being assembled together.

[0079] like Figure 8-14 As shown, in order to adapt to the manufacture of various modules, as a specific implementation method, the longitudinal clamping mechanism includes a longitudinal direct-acting drive mechanism 7 whose output end can move in the left-right direction and a longitudinal fixing seat 4 fixed on the workbench 1; the module stacking device also includes 2n detachable clamping members 6, and the 2n detachable clamping members 6 are paired in pairs to form n pairs of detachable clamping members 6 for clamping a row of battery cells; in the left-right direction, in a pair of detachable clamping members 6, one of the detachable clamping members 6 cooperates with the stopper of the longitudinal fixing seat 4, and the other detachable clamping member 6 cooperates with the output end stopper of the longitudinal direct-acting drive mechanism 7 in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism 7 drives the corresponding detachable clamping member 6 to move left and right to change the spacing between a pair of detachable clamping members 6.

[0080] Of course, in other specific embodiments, refer to Figure 8-14 As shown, the longitudinal clamping mechanism may also include a longitudinal direct-acting drive mechanism 7 whose two output ends can move in the left-right direction, and the module stacking device also includes 2n detachable clamping members 6, and the 2n detachable clamping members 6 are paired in pairs to form n pairs of detachable clamping members 6 for clamping a row of battery cells; in the left-right direction, in a pair of detachable clamping members 6, each detachable clamping member 6 is respectively matched with the output end stopper of two longitudinal direct-acting drive mechanisms 7 in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism 7 drives a pair of detachable clamping members 6 to move left and right to change the spacing between the pair of detachable clamping members 6.

[0081] Similarly, the transverse clamping mechanism includes a transverse direct-acting drive mechanism 21 whose output end can move along the front-rear direction and a transverse fixing seat 3 fixed on the workbench 1; or, the transverse clamping mechanism includes two transverse direct-acting drive mechanisms 21 whose output ends can move along the front-rear direction.

[0082] The longitudinal direct-acting drive mechanism 7 and the transverse direct-acting drive mechanism 21 are commonly used direct-acting drive mechanisms such as screw mechanisms, electric push rods, and electric cylinders, which will not be described in detail here. The longitudinal direct-acting drive mechanism 7 and the transverse direct-acting drive mechanism 21 are also equipped with pressure sensors to monitor the extrusion force on the battery cell to prevent the battery cell from being over-extruded.

[0083] In actual manufacturing, since the left-right movement stroke of the longitudinal direct-acting drive mechanism 7 is constant, when the number of cells in each row in the module is small, a detachable clamping member 6 with a longer length in the left-right direction can be selected to ensure that the longitudinal direct-acting drive mechanism 7 can drive the detachable clamping member 6 to clamp the cells; when the number of cells in each row in the module is large, a detachable clamping member 6 with a shorter length in the left-right direction can be selected. At this time, the stroke of the longitudinal direct-acting drive mechanism 7 only needs to be greater than the deformation stroke of each row of cells after being squeezed, and does not need to be greater than the length of the entire stacking tray in the left-right direction, saving costs and space.

[0084] However, in other specific embodiments, refer to Figure 8-14 As shown, the detachable clamping member 6 may also be omitted, so that the stroke of the longitudinal direct-acting drive mechanism 7 is greater than the length of the stacking tray along the left-right direction (when the same longitudinal clamping mechanism includes two longitudinal direct-acting drive mechanisms 7, the stroke of each longitudinal direct-acting drive mechanism 7 only needs to be greater than half the length of the stacking tray). When stacking battery cells, it is necessary to remove the vertical plate 52 on the stacking tray. After the battery cells are stacked, the output end of the longitudinal direct-acting drive mechanism 7 is separated from the stacking tray, and then the vertical plate 52 is installed on the support plate 51, and finally the stacking tray is lifted.

[0085] In reference Figure 1-7 On the basis of Figure 8-14 As shown, when the sub-tray has a vertical plate 52, an escape groove 521 extending in the up-down direction to escape the corresponding detachable clamp 6 is provided at the upper end of each vertical plate 52, and the left and right ends of the detachable clamp 6 are respectively located on the left and right sides of the corresponding vertical plate 52. The escape groove 521 can prevent the vertical plate 52 and the detachable clamp 6 from interfering with each other. At the same time, after the modules are stacked, the detachable clamp 6 can be moved upward and removed, which is convenient for operation.

[0086] like Figure 8-14As shown, in order to better prevent the detachable clamp 6 from rotating before contacting the battery cell, as a specific embodiment, the detachable clamp 6 includes a main body 61 for being placed on the stacking tray and at least two force transmission rods 62 (specifically four in the figure) located on one side of the main body 61 and used to cooperate with the longitudinal direct-acting drive mechanism 7 or the longitudinal fixing seat 4 stopper, wherein the two force transmission rods 62 are arranged along the front-to-back direction, and the two force transmission rods 62 are respectively located in different avoidance grooves 521 when in use, and the groove width of the avoidance groove 521 matches the outer diameter of the force transmission rod 62 to form a guide groove for providing guidance for the force transmission rod 62, thereby better preventing the detachable clamp 6 from rotating during movement.

[0087] like Figure 13-14 As shown, the output end of the longitudinal direct-acting drive mechanism 7 is a longitudinal movable seat 71, on which a socket 711 is provided, into which a force transmission rod 62 is inserted, thereby preventing the detachable clamping member 6 from rotating during movement. At this time, the number of the force transmission rod 62 can be one.

[0088] Reference Figure 8-14 As shown, in other specific embodiments, only the groove width of the avoidance groove 521 can be matched with the outer diameter of the force transmission rod 62, or only the socket 711 for inserting the force transmission rod 62 is provided on the longitudinal movable seat 71, and the groove width of the avoidance groove 521 is much larger than the outer diameter of the force transmission rod 62.

[0089] like Figure 8 and 10 As shown, in order to make the transverse clamping mechanism better bond each row of cells to the heating film, as a specific embodiment, each transverse direct-acting drive mechanism 21 is equipped with a transverse pressing plate 23 for pressing the cells, and an isosceles tripod 22 is connected to the output end between the transverse pressing plate 23 and the transverse direct-acting drive mechanism 21. The plate surface of the transverse pressing plate 23 close to the transverse direct-acting drive mechanism 21 is fixedly connected to the bottom edge of the isosceles tripod 22, and the output end of the transverse direct-acting drive mechanism 21 is fixedly connected to the top corner of the isosceles tripod 22. A rib plate 24 is provided between the two isosceles tripods 22 to enhance the structural strength.

[0090] When the output end of the transverse direct-acting drive mechanism 21 moves toward the battery cell, the pressure applied by the output end to the top angle of the isosceles triangle 22 is transmitted to the edge of the transverse pressure plate 23 through the waist of the isosceles triangle 22, thereby preventing the transverse pressure plate 23 from rotating and enabling the transverse pressure plate 23 to better squeeze each row of battery cells.

[0091] Of course, in other specific implementations, the output end of the transverse direct-acting drive mechanism 21 may also be directly fixedly connected to the center of the transverse pressure plate 23 .

[0092] Reference Figure 8-13As shown, the workbench 1 includes a table body, a linear slide 12 mounted on the table body, and n mounting plates 11 mounted on the linear slide 12. The linear slide 12 extends in the front-to-back direction, and the mounting plate 11 extends in the left-to-right direction. Each mounting plate 11 is guided and slidably matched with the table body in the front-to-back direction. Each longitudinal clamping mechanism is respectively mounted on a different mounting plate 11, and each sub-tray is respectively placed on a different mounting plate 11. Of course, each longitudinal clamping mechanism can also be directly mounted on the table body, and each sub-tray can be placed on the table body; or, the linear slide 12 can be changed into a linear guide rail, and rollers can be set at the bottom of the mounting plate 11, so that each mounting plate 11 can be guided and rolled with the table body in the front-to-back direction.

[0093] In the actual production process, n rows of modules can be manufactured according to the module stacking method provided in the present invention, wherein: a set spacing can be made between adjacent mounting plates 11, so as to facilitate the pasting of the heating film on one row of battery cells, and then, the transverse clamping mechanism pushes the battery cells to move, and the battery cells drive the movement of each mounting plate 11, so that the heating film is bonded between two adjacent rows of battery cells, and then, the vertical plate is used to fix and connect two adjacent sub-trays so that all sub-trays form a whole.

[0094] Specific embodiments of the module stacking method provided by the present invention:

[0095] The module stacking method of the present invention can be implemented by using the module stacking device provided in the foregoing text of the present invention.

[0096] Reference Figure 1-14 As shown, the following preparations need to be performed before using the module stacking method provided by the present invention: define the arrangement direction of two adjacent cells in each row of cells as the left-right direction, prepare m sub-trays that are detachably fixed to each other, and the width of each sub-tray in the front-to-back direction matches the width of each row of cells in the front-to-back direction. Select n sub-trays for use according to the n rows of modules to be manufactured, and keep the remaining sub-trays as spares, m≥n≥2;

[0097] Reference Figure 1-14 As shown, the module stacking method provided by the present invention comprises the following steps:

[0098] Step S1, placing each row of battery cells on each sub-tray with the same number of battery cell rows, and clamping each row of battery cells using a longitudinal clamping mechanism to bond each row of battery cells together;

[0099] Step S2, defining the arrangement direction of two adjacent cells in each row of cells as the left-right direction, each sub-tray is movably arranged on the workbench along the front-back direction, and a double-sided adhesive tape is pasted on one of the two adjacent end surfaces of the two adjacent rows of cells. According to actual production needs, the tape can be a heating film, a liquid cooling plate or a PC (Polycarbonate) film or other parts pasted between the two adjacent rows of cells;

[0100] Step S3, each longitudinal clamping mechanism loosens each row of battery cells, and then uses the transverse clamping mechanism to clamp all battery cells, and the transverse clamping mechanism pushes the battery cells on the sub-tray, and the friction between the battery cells and the sub-tray drives the sub-tray to move in the front-to-back direction, so that all sub-trays are in contact and all battery cells are bonded together;

[0101] Step S4, assembling all the sub-pallets into a whole and forming a stacking pallet, so as to facilitate the overall hoisting of the stacking pallet later;

[0102] In step S1, a set distance is set between adjacent sub-trays, or, in step S2, the sub-trays are moved to ensure that a set distance is set between two adjacent sub-trays, so as to provide space for pasting the tape film.

[0103] Prepare m sub-trays in advance. When stacking n rows of modules, use n of the sub-trays to support different rows of cells respectively, and assemble the n sub-trays into a whole for later lifting. When stacking modules of different rows, you only need to select different numbers of sub-trays, which can reduce the types of pallets, reduce costs and facilitate on-site management.

[0104] In order to more conveniently align each longitudinal clamping mechanism with each sub-pallet, as a specific implementation method, the workbench 1 includes a table body and a mounting plate 11 that cooperates with the table body to guide movement along the front-to-back direction, and the width of each mounting plate 11 along the front-to-back direction matches the width of each sub-pallet; each mounting plate 11 is provided with a set of longitudinal clamping mechanisms, and each sub-pallet is placed on a corresponding mounting plate 11, and one of the mounting plate 11 and the sub-pallet is provided with a limiting piece, and the other is provided with a limiting hole matched with the limiting piece to limit the relative position of the mounting plate 11 and the sub-pallet, thereby ensuring that the sub-pallet is aligned with the corresponding longitudinal clamping mechanism and avoiding the longitudinal clamping mechanism from being clamped off-center.

[0105] However, in other specific embodiments, the sub-tray can also be directly coordinated with the guide movement of the workbench 1. In this case, the width of the clamping part of the longitudinal clamping mechanism used to clamp the battery cells in the front-to-back direction can be made greater than the width of each row of battery cells in the front-to-back direction to ensure the extrusion effect of each row of battery cells.

[0106] In order to reduce the space occupied by the module stacking device, as a specific implementation, in step S1 , each row of battery cells is provided with one or a pair of detachable clamps 6 , and the longitudinal clamping mechanism clamps each row of battery cells via the detachable clamps 6 .

[0107] Specifically, during the preparation work, 2m detachable clamps 6 with a set length in the left-right direction need to be prepared, and the 2m detachable clamps 6 are paired in pairs to form m pairs of detachable clamps for clamping a row of battery cells;

[0108] In step S1, when the length of each row of battery cells is greater than the shortest length that each longitudinal clamping mechanism can directly adapt to, no detachable clamping member 6 may be selected and each row of battery cells may be directly clamped using the longitudinal clamping mechanism; when the length of each row of battery cells is not greater than the shortest length that each longitudinal clamping mechanism can directly adapt to, n pairs of detachable clamping members are selected for use; in the left and right directions, for a pair of detachable clamping members, each detachable clamping member 6 is respectively arranged between a row of battery cells and the longitudinal clamping mechanism, and each longitudinal clamping mechanism indirectly clamps a row of battery cells through a pair of detachable clamping members.

[0109] Of course, when the length of each row of battery cells is greater than the shortest length that each longitudinal clamping mechanism can directly adapt to, n pairs of detachable clamping members 6 can also be selected for use, and each pair of detachable clamping members 6 can be used to clamp each row of battery cells.

[0110] Of course, each longitudinal clamping mechanism may also use only one detachable clamping member 6 as long as the battery cell can be clamped.

[0111] Compared with the technical solution in which the effective clamping length of the longitudinal clamping mechanism is 0 to the length of the entire stacking tray along the left-right direction, and the longitudinal clamping mechanism is used to directly clamp each row of battery cells, the theoretical effective clamping length of the longitudinal clamping mechanism only needs to be the sum of the lengths of each pair of detachable clamping parts along the left-right direction to the length of the entire stacking tray along the left-right direction, which can reduce the movement stroke of the longitudinal direct-acting drive mechanism in the longitudinal clamping mechanism and save costs and space.

[0112] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stacking tray, characterized in that: The stacking tray comprises at least n sub-trays arranged in the front-to-back direction and respectively used to support different rows of battery cells, where n≥2, the width of each sub-tray in the front-to-back direction matches the width of each row of battery cells in the front-to-back direction, adjacent sub-trays are connected by mortise and tenon, each sub-tray has a horizontally extending connecting tenon, and the connecting tenon is provided with a through hole that passes through the connecting tenon in the up-down direction. The stacking tray also comprises a fixing pin that is simultaneously inserted into the through holes of all the connecting tenons between adjacent sub-trays so as to detachably and fixedly connect the adjacent sub-trays; the sub-tray at the front end and the sub-tray at the rear end are provided with a sling connection structure for cooperating with a sling.

2. The stacking tray according to claim 1, wherein: Each sub-tray includes a support plate for supporting the battery cell and two vertical plates at both ends of the support plate. The upper end of each vertical plate is provided with an avoidance groove extending in the up-down direction for avoiding the detachable clamping member when in use, and the connecting tenon is arranged on the vertical plate.

3. The stacking tray according to claim 2, wherein: The sling connection structure is a hook or ring vertically installed on the upper end of the vertical plate.

4. The stacking tray according to claim 2 or 3, characterized in that The adjacent support plates are matched with each other by mortise and tenon joints, one of the support plates is provided with a supporting tenon extending in the left-right direction, and the other support plate is provided with a mortise eye matching the supporting tenon.

5. The stacking tray according to claim 2 or 3, characterized in that: The lower end of the support plate is provided with a limiting piece for limiting cooperation with the limiting holes on each mounting plate; or, the lower end of the support plate is provided with a limiting hole for limiting cooperation with the limiting piece on each mounting plate.

6. A module stacking method, characterized in that: The following steps are involved: Step S1, placing each row of battery cells on each sub-tray with the same number of battery cell rows, and clamping each row of battery cells using a longitudinal clamping mechanism to bond each row of battery cells together; Step S2, defining the arrangement direction of two adjacent battery cells in each row of battery cells as the left-right direction, each sub-tray is movably arranged on a workbench along the front-back direction, and a double-sided adhesive tape is pasted on one of the two adjacent end surfaces of the two adjacent rows of battery cells; Step S3, each longitudinal clamping mechanism loosens each row of battery cells, and then uses the transverse clamping mechanism to clamp all battery cells, and the transverse clamping mechanism pushes the battery cells on the sub-tray, and the friction between the battery cells and the sub-tray drives the sub-tray to move in the front-to-back direction, so that all sub-trays are in contact and all battery cells are bonded together; Step S4, assembling all the sub-pallets into a whole and forming a stacking pallet as described in any one of claims 1 to 5, so as to facilitate the subsequent overall hoisting of the stacking pallet; In step S1, a set distance is set between adjacent sub-trays, or, in step S2, the sub-trays are moved to ensure that a set distance is set between two adjacent sub-trays, so as to provide space for pasting the tape film.

7. The module stacking method according to claim 6, characterized in that: The workbench includes a table body and a mounting plate that cooperates with the table body to guide movement along the front-to-back direction. The width of each mounting plate along the front-to-back direction matches the width of each sub-pallet. Each mounting plate is provided with a set of longitudinal clamping mechanisms. Each sub-pallet is placed on a corresponding mounting plate, and one of the mounting plate and the sub-pallet is provided with a limiting piece, and the other is provided with a limiting hole that matches the limiting piece to limit the relative position of the mounting plate and the sub-pallet.

8. The module stacking method according to claim 6 or 7, characterized in that: In step S1 , each row of battery cells is provided with one or a pair of detachable clamping members, and the longitudinal clamping mechanism clamps each row of battery cells via the detachable clamping members.

9. A module stacking device, comprising a workbench, on which are mounted a longitudinal clamping mechanism for clamping a row of cells in the left-right direction and a transverse clamping mechanism for clamping all cells in the front-back direction, characterized in that: There are n longitudinal clamping mechanisms arranged along the front-to-back direction, where n≥2; the module stacking device also includes a stacking tray for simultaneously supporting n rows of battery cells, and the stacking tray is the stacking tray described in claim 1.

10. The module stacking device according to claim 9, characterized in that: The longitudinal clamping mechanism includes a longitudinal direct-acting drive mechanism whose two output ends can move in the left-right direction. The module stacking device also includes 2n detachable clamping members, and the 2n detachable clamping members are paired in pairs to form n pairs of detachable clamping members for clamping a row of battery cells; in the left-right direction, for a pair of detachable clamping members, each detachable clamping member is respectively matched with the output end stop of two longitudinal direct-acting drive mechanisms in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism drives a pair of detachable clamping members to move left and right to change the spacing between the pair of detachable clamping members.

11. The module stacking device according to claim 9, characterized in that: The longitudinal clamping mechanism includes a longitudinal direct-acting drive mechanism whose output end can move in the left-right direction and a longitudinal fixing seat fixed on the workbench; the module stacking device also includes 2n detachable clamping members, and the 2n detachable clamping members are paired in pairs to form n pairs of detachable clamping members for clamping a row of battery cells; in the left-right direction, for a pair of detachable clamping members, one of the detachable clamping members cooperates with the stopper of the longitudinal fixing seat, and the other detachable clamping member cooperates with the output end stopper of the longitudinal direct-acting drive mechanism in the same longitudinal clamping mechanism, so that the longitudinal direct-acting drive mechanism drives the corresponding detachable clamping member to move left-right and change the spacing between a pair of detachable clamping members.

12. The module stacking device according to claim 10 or 11, characterized in that: Each sub-tray includes a support plate for supporting the battery cells and two vertical plates located at both ends of the support plate. The upper end of each vertical plate is provided with an avoidance groove extending in the up and down directions to avoid the corresponding detachable clamping parts. The left and right ends of the detachable clamping parts are respectively located on the left and right sides of the corresponding vertical plates; the connecting tenons are arranged on the vertical plates.

13. The module stacking device according to claim 12, characterized in that: The workbench comprises a table body and n mounting plates which cooperate with the table body for guiding movement along the front-rear direction, and each mounting plate is provided with a longitudinal clamping mechanism and a sub-tray.

14. The module stacking device according to claim 13, characterized in that: A limit hole is provided on each mounting plate, and a limit pin is provided at the lower end of the support plate for limiting cooperation with the limit holes on each mounting plate; or, a limit hole is provided at the lower end of the support plate, and each mounting plate is provided with a limit pin for limiting cooperation with the limit holes on each support plate.

15. The module stacking device according to claim 12, characterized in that: The detachable clamping part includes a main body part for being placed on a support plate and at least two force transmission rods located on one side of the main body part and used to cooperate with a longitudinal direct-acting drive mechanism or a longitudinal fixed seat stopper, wherein the two force transmission rods are arranged along the front-to-back direction, and the two force transmission rods are respectively located in different avoidance grooves when in use, and the groove width of the avoidance groove matches the outer diameter of the force transmission rod to form a guide groove for providing guidance for the force transmission rod.

16. The module stacking device according to any one of claims 9 to 11, characterized in that: The transverse clamping mechanism includes a transverse direct-acting drive mechanism whose output end can move in the front-to-back direction and a transverse fixing seat fixed on the workbench, or the transverse clamping mechanism includes two transverse direct-acting drive mechanisms whose output ends can move in the front-to-back direction; each transverse direct-acting drive mechanism is equipped with a transverse pressure plate for pressing the battery cell, and an isosceles tripod is connected to the output end between the transverse pressure plate and the transverse direct-acting drive mechanism, and the plate surface of the transverse pressure plate close to the transverse direct-acting drive mechanism is fixedly connected to the bottom edge of the isosceles tripod, and the output end of the transverse direct-acting drive mechanism is fixedly connected to the top angle of the isosceles tripod.

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