Battery cell stacking equipment

Abstract

The invention provides battery cell stacking equipment, which comprises a rack, a plurality of battery cells, a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, the tray is movably arranged on the rack, and the tray can do reciprocating motion between the stacking area and the transferring area; the supporting strip is arranged on the tray and is used for supporting the battery cell; and the material claw assembly is movably arranged on the tray and used for grabbing the battery cells so as to place the battery cells on the supporting strips, and the material claw assembly can drive the battery cells in the longitudinal direction so that the battery cells can be separated from the supporting strips. According to the invention, a coating film of the battery cell can be effectively prevented from being damaged due to friction between the battery cell and the supporting strip; meanwhile, after the battery modules are stacked and formed, the tray bears the battery modules to move to the transfer area from the stacking area so as to reach the next station, and compared with a traditional robot transfer mode, the risk that the battery modules fall in the transfer process is avoided, and meanwhile the transfer efficiency of the battery modules can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery cell stacking device. Background Art

[0002] In the process of existing battery cell stacking mechanism moving battery cells in the length direction of the module, the bottom of the battery cell will inevitably rub against the supporting structure, which can easily cause damage to the battery cell film and affect the module quality. At the same time, the module formed by the battery cell stacking is transferred to the next workstation by a robot. Due to the large mass of the module, there is a risk of the module falling, and when the robot performs this step, at least three processes of loading, transferring and unloading are required, resulting in low work efficiency. Summary of the invention

[0003] In view of the deficiencies of the prior art, an object of the present invention is to provide a battery cell stacking device, which effectively reduces the possibility of damage to the battery cell membrane during the stacking process and facilitates the transportation of battery modules.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A battery cell stacking device comprises: a frame having a stacking area and a transfer area; a tray movably arranged on the frame, the tray being capable of reciprocating between the stacking area and the transfer area; a support bar arranged on the tray and used to support the battery cells; a claw assembly movably arranged on the tray and used to grab the battery cells to place them on the support bar, the claw assembly being capable of driving the battery cells in the longitudinal direction so that the battery cells are detached from the support bar.

[0006] According to a preferred embodiment, the material claw assembly includes a bracket, which can move along the extension direction of the support bar, and the bracket is provided with a grasping portion for grasping the battery cell. The grasping portion and / or the bracket can move longitudinally so that the battery cell grasped by the grasping portion is detached from the support bar.

[0007] According to a preferred embodiment, the material claw assembly includes a bracket, which can move along the extension direction of the support bar, and the bracket is provided with a grabbing portion for grabbing the battery cell; a longitudinal plate is provided on the tray, and the longitudinal plate can move along the extension direction of the support bar, and the bracket is assembled on the longitudinal plate and can move longitudinally relative to the longitudinal plate.

[0008] According to a preferred embodiment, a mounting column is provided on the pallet, the support bar is fixed to the pallet through the mounting column, and an adjustment space is provided between the support bar and the pallet; the bracket extends into the adjustment space, and the grasping portion includes two claws symmetrically arranged with respect to the support bar, and the two claws can approach or move away from each other.

[0009] According to a preferred embodiment, there are at least two gripping portions, which are spaced apart along the extension direction of the support bar, and two adjacent gripping portions can be close to or far away from each other.

[0010] According to a preferred embodiment, the gripping portion also includes a base plate and two adapter plates corresponding to the two claw bodies one by one, and the direction in which the two claw bodies approach or move away from each other is defined as a first direction; the base plate is installed on the bracket, the adapter plate is slidably connected to the base plate, and the adapter plate moves relative to the base plate along the first direction; the claw body is slidably installed on the adapter plate, and the claw body moves relative to the adapter plate along the second direction, and two limit plates are arranged on the adapter plate, the claw body is located between the two limit plates, and a buffer spring is pressed between the claw body and at least one of the limit plates; the first direction, the second direction and the longitudinal direction are perpendicular to each other.

[0011] According to a preferred embodiment, a rack is provided on the frame, and the rack extends between the stacking area and the transfer area; a gear and a first driving member are provided on the pallet, and the gear is rotatably installed on the pallet and meshes with the rack, and the first driving member is used to drive the gear to rotate.

[0012] According to a preferred embodiment, two side pressing platforms are arranged on the stacking area, a shaping space is provided between the two side pressing platforms, and the pallet is located in the shaping space; an end pressing mechanism is provided on the pallet, and a side pressing mechanism is provided on the side pressing platform.

[0013] According to a preferred embodiment, the end pressure mechanism includes a movable end plate and a fixed end plate installed on the pallet, and the movable end plate and the fixed end plate are both provided with an avoidance gap for avoiding the support strip, and the support strip can extend into the avoidance gap; the movable end plate can approach or move away from the fixed end plate.

[0014] According to a preferred embodiment, the side pressure mechanism includes a main frame slidably mounted on the side pressure platform, and a side pressure plate is provided on the main frame facing the shaping space; a sub-frame is slidably mounted on the main frame, and a longitudinal pressure plate is provided on the sub-frame facing the shaping space, and the longitudinal pressure plate can approach or move away from the shaping space in the longitudinal direction.

[0015] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0016] In the present invention, during the process of placing the battery cells in the extension direction of the support bars, the battery cells are separated from the support bars, thereby effectively preventing the battery cell membranes from being damaged due to friction between the battery cells and the support bars; at the same time, after the battery modules are stacked, the tray carrying the battery modules moves from the stacking area to the transfer area to reach the next workstation. Compared with the traditional robot transfer method, it avoids the risk of the battery modules falling during the transfer process and can effectively improve the transfer efficiency of the battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a battery cell stacking device provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of a tray provided in an embodiment of the present invention after being equipped with an end pressing mechanism and a battery module;

[0020] Figure 3 A schematic diagram of a first three-dimensional structure of a tray provided by an embodiment of the present invention after being equipped with an end pressing mechanism;

[0021] Figure 4 A schematic diagram of a second three-dimensional structure of a tray provided in an embodiment of the present invention after being equipped with an end pressing mechanism;

[0022] Figure 5 A schematic diagram of the assembly structure of a tray and a guide rail provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the assembly structure of the claw assembly provided by the embodiment of the present invention through the longitudinal plate and the linear module;

[0024] Figure 7 A schematic diagram of a first three-dimensional structure after the claw assembly and the longitudinal plate are assembled according to an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of a second three-dimensional structure after the claw assembly and the longitudinal plate are assembled according to an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of a first three-dimensional structure of a side pressure structure provided by an embodiment of the present invention;

[0027] Fig.10A second three-dimensional structural schematic diagram of the side pressure structure provided in an embodiment of the present invention.

[0028] Icons: 1-frame, 11-stacking area, 111-side pressing table, 112-shaping space, 1121-guide rail, 1122-rack, 12-transfer area, 2-side pressing mechanism, 21-main frame, 211-side pressing plate, 212-first power cylinder, 22-sub-frame, 221-longitudinal pressing plate, 222-second power cylinder, 223-third power cylinder, 3-end pressing mechanism, 30-tray, 301-gear, 302-first driving member, 303-installation column, 3031-adjusting cylinder, 304-movable end plate, 305- Fixed end plate, 306-moving square hole, 307-avoidance gap, 308-sliding block, 309-second driving member, 31-longitudinal plate, 311-transmission screw, 312-driving block, 313-driving cylinder, 32-material claw assembly, 321-grabbing part, 3211-adapter plate, 3212-claw body, 3213-bottom plate, 322-bracket, 323-limiting plate, 324-buffer spring, 33-linear module, 34-support bar, 4-battery module, 41-battery cell, X-first direction, Y-second direction, Z-longitudinal direction. DETAILED DESCRIPTION

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Please refer to Figures 1 to 10A battery cell stacking device includes a frame 1, a tray 30, a support bar 34 and a claw assembly 32, wherein the frame 1 has a stacking area 11 and a transfer area 12; the tray 30 is movably arranged on the frame 1, and the tray 30 can reciprocate between the stacking area 11 and the transfer area 12; the support bar 34 is arranged on the tray 30, for supporting the battery cell 41; the claw assembly 32 is movably arranged on the tray 30, for grabbing the battery cell 41 to place it on the support bar 34, and the claw assembly 32 can drive the battery cell 41 in the longitudinal direction Z so that the battery cell 41 is separated from the support bar 34.

[0033] The battery cells 41 for stacking to form the battery module 4 are placed on the support bar 34. Preferably, the support bar 34 is arranged horizontally. After the battery cells 41 are transferred to the support bar 34 by the robot arm, the claw assembly 32 grabs the battery cells 41 to separate them from the support bar 34 in the longitudinal direction Z, and then the battery cells 41 are placed in the appropriate positions in the extension direction of the support bar 34 in sequence. Since the battery cells 41 are separated from the contact with the support bar 34 during the placement process in the extension direction of the support bar 34, the friction between the battery cells 41 and the support bar 34 can be effectively avoided to damage the membrane of the battery cells 41; at the same time, after the battery module 4 is stacked to form the battery module 4, the tray 30 carries the battery module 4 from the stacking area 11 to the transfer area 12 to reach the next workstation. Compared with the traditional robot transfer method, it avoids the risk of the battery module 4 falling during the transfer process and can effectively improve the transfer efficiency of the battery module 4.

[0034] It should be noted that the subsequent processing station of the battery module 4, that is, the "next station" mentioned above, can be in the transfer area 12, or the transfer area 12 can extend to the "next station" area.

[0035] like Figure 1 As shown, in some embodiments, two side pressing platforms 111 are arranged at the stacking area 11, and a shaping space 112 is provided between the two side pressing platforms 111. A guide rail 1121 is provided in the shaping space 112, and the guide rail 1121 extends from the shaping space 112 to the transfer area 12, and the tray 30 is slidably connected to the guide rail 1121. When in use, the tray 30 reciprocates between the stacking area 11 and the transfer area 12 by sliding along the guide rail 1121. An end pressing mechanism 3 is provided on the tray 30, and a side pressing mechanism 2 is provided on the side pressing platform 111. When the tray 30 is in the stacking area 11, the end pressing mechanism 3 cooperates with the side pressing mechanism 2 to jointly complete the shaping of the battery cells 41 stacked on the support bar 34 to form a battery module 4.

[0036] like Figure 5As shown, a rack 1122 parallel to the guide rail 1121 is also provided in the shaping space 112, and the rack 1122 is extended between the stacking area 11 and the transfer area 12. A gear 301 and a first driving member 302 are provided on the tray 30, and the gear 301 is rotatably mounted on the tray 30 and meshes with the rack 1122, and the first driving member 302 is used to drive the gear 301 to rotate. Preferably, the first driving member 302 is a motor, and the output shaft of the motor is connected to the gear 301 in a transmission manner. When in use, the first driving member 302 drives the gear 301 to rotate, and the tray 30 slides relative to the guide rail 1121 along the extension direction of the rack 1122, that is, the extension direction of the guide rail 1121, through the transmission of the gear 301 and the rack 1122, that is, the reciprocating motion of the tray 30 between the stacking area 11 and the transfer area 12 is achieved through the transmission of the gear 301 and the rack 1122. It should be noted that the tray 30 is equipped with a sliding block 308 adapted to the guide rail 1121. In this embodiment, the rack 1122 is fixedly mounted on the frame 1.

[0037] In other embodiments, the tray 30 may also be driven to slide on the guide rail 1121 by a linear module 33 or a cylinder or other driving member. Since the movement stroke between the stacking area 11 and the transfer area 12 is large, the gear 301 and the rack 1122 are preferably driven in this embodiment.

[0038] In some embodiments, the claw assembly 32 includes a bracket 322, which can move along the extension direction of the support bar 34. The bracket 322 is provided with a grabbing portion 321 for grabbing the battery cell 41. The grabbing portion 321 and / or the bracket 322 can move along the longitudinal direction Z so that the battery cell 41 grabbed by the grabbing portion 321 is detached from the support bar 34.

[0039] In this embodiment, preferably, the bracket 322 can move along the longitudinal direction Z so that the battery cell 41 grasped by the grasping portion 321 is separated from the support bar 34 .

[0040] Specifically, the tray 30 is provided with a longitudinal plate 31, which can move along the extension direction of the support bar 34, and the bracket 322 is assembled on the longitudinal plate 31 and can move relative to the longitudinal plate 31 along the longitudinal direction Z. In this way, the gripping portion 321 can move in the extension direction of the support bar 34 and the longitudinal direction Z, so that the battery cells 41 can be placed in order on the support bar 34.

[0041] Furthermore, the bracket 322 is slidably connected to the longitudinal plate 31 through a slide rail and slider assembly, and a transmission screw 311 is rotatably mounted on the longitudinal plate 31, and a driving block 312 is rotatably connected to the transmission screw 311, and the driving block 312 is fixedly connected to the bracket 322. The transmission screw 311 is driven to rotate by a motor mounted on the longitudinal plate 31, so that the bracket 322 is driven to move in the longitudinal direction Z through the driving block 312.

[0042] The end pressing mechanism 3 includes a mounting column 303 disposed on the tray 30, and the support bar 34 is fixed to the tray 30 through the mounting column 303, and there is an adjustment space between the support bar 34 and the tray 30; the bracket 322 extends into the adjustment space, and the gripping portion 321 includes two claws 3212 symmetrically disposed about the support bar 34, and the two claws 3212 can move closer to or farther from each other. Figure 3 As shown, the direction in which the two claw bodies 3212 approach or move away from each other is defined as the first direction X; the extension direction of the support bar 34 is the second direction Y, and the first direction X, the second direction Y and the longitudinal direction Z are perpendicular to each other. Two mounting columns 303 are arranged at intervals on the tray 30 in the second direction Y, and the end of the support bar 34 is installed on the mounting column 303 adjacent to it. The end pressure mechanism 3 also includes a movable end plate 304 and a fixed end plate 305 installed on the tray 30, the movable end plate 304 is arranged close to one of the mounting columns 303, and the fixed end plate 305 is arranged close to the other mounting column 303. The movable end plate 304 and the fixed end plate 305 are both provided with an avoidance gap 307 for avoiding the support bar 34, and the support bar 34 can extend into the avoidance gap 307. In this embodiment, the movable end plate 304 is slidably connected to the tray 30 through a slide rail slider assembly, and the movable end plate 304 can move relative to the tray 30 in the second direction Y to approach or move away from the fixed end plate 305.

[0043] Furthermore, if Figure 4 As shown, a second driving member 309 is provided on the tray 30 , and the second driving member 309 acts on the movable end plate 304 to drive it to move along the second direction Y.

[0044] In this embodiment, the gripping portion 321 is located in the adjustment space, that is, at the lower side of the support bar 34, so as to avoid interference with the loading mechanism (not shown) when the battery cell 41 is loaded onto the support bar 34. Optionally, the loading mechanism is a robotic arm.

[0045] In order to prevent the second driving member 309 from interfering with the bracket 322 in the adjustment space, the second driving member 309 is disposed on a side of the tray 30 away from the bracket 322. Figure 4 As shown, a moving square hole 306 is provided through the tray 30 , and the movable end plate 304 extends through the moving square hole 306 to a side of the tray 30 away from the bracket 322 .

[0046] Optionally, the second driving member 309 includes but is not limited to a cylinder, a hydraulic cylinder or an electric push rod.

[0047] In some embodiments, the fixed end plate 305 is connected to the tray 30 via a slide rail slider to facilitate adjusting the position of the fixed end plate 305 as needed. It should be noted that the movement direction of the fixed end plate 305 is parallel to the movement direction of the movable end plate 304. When in use, the position of the fixed end plate 305 on the tray 30 is fixed. Figure 3 As shown, the tray 30 is provided with an adjusting cylinder 3031, and the telescopic end of the adjusting cylinder 3031 is connected to the fixed end plate 305. The position of the fixed end plate 305 is adjusted by the telescopic adjustment of the adjusting cylinder 3031, and the position of the fixed end plate 305 is fixed by the adjusting cylinder 3031.

[0048] Furthermore, if Figure 3 , Figure 6 and Figure 7 As shown, there are at least two gripping portions 321 and they are arranged at intervals along the extension direction of the support bar 34, that is, the second direction Y, and two adjacent gripping portions 321 can be close to or far away from each other. In this embodiment, each gripping portion 321 is responsible for grabbing a battery cell 41 on the support bar 34, and the at least two gripping portions 321 here can improve the placement efficiency of the battery cells 41 on the support bar 34. In this embodiment, the number of the gripping portions 321 is preferably two.

[0049] like Figure 3 and Figure 6 As shown, the tray 30 is provided with a linear module 33, and the longitudinal plate 31 is provided on the linear module 33 and driven by the linear module 33 to move along the extension direction of the support bar 34. In this way, the battery cells 41 constituting the battery module 4 can be placed in sequence in the extension direction of the support bar 34, that is, in the length direction of the battery module 4; in this process, the distance between the two adjacent battery cells 41 grasped at a time can be adjusted by moving the two adjacent grasping portions 321 closer or farther from each other, so as to facilitate the rapid shaping of the battery module 4 at a later stage.

[0050] Specifically, in this embodiment, one of the grabbing parts 321 is slidably connected to the bracket 322 through a slide rail slider assembly, and the other grabbing part 321 is fixedly connected to the bracket 322. A driving cylinder 313 is provided on the bracket 322, and the driving cylinder 313 is used to drive the grabbing part 321 slidably assembled on the bracket 322 to approach or move away from the grabbing part 321 fixedly assembled on the bracket 322 in the second direction Y.

[0051] More specifically, the grabbing portion 321 includes a bottom plate 3213, wherein the bottom plate 3213 of one grabbing portion 321 is fixedly connected to the bracket 322, and the bottom plate 3213 of the other grabbing portion 321 is slidably connected to the middle bracket 322 via a slide rail slider assembly. In this embodiment, when the bottom plate 3213 is slidably connected to the bracket 322, the bottom plate 3213 can move relative to the bracket 322 along the second direction Y to achieve the approach or distance of two adjacent grabbing portions 321 in the second direction Y.

[0052] The gripping portion 321 further includes two adapter plates 3211 corresponding to the two claw bodies 3212.

[0053] The adapter plate 3211 is slidably connected to the bottom plate 3213 through the slide rail slider assembly, and the adapter plate 3211 moves relative to the bottom plate 3213 along the first direction X. In this embodiment, a finger cylinder is installed on the bottom plate 3213, and the two adapter plates 3211 of the grasping part 321 are driven by the finger cylinder to realize that the two claw bodies 3212 are close to or away from each other, so that the grasping part 321 can grasp the battery cell 41. Further, the claw body 3212 is slidably installed on the adapter plate 3211 through the slide rail slider assembly, and the claw body 3212 moves relative to the adapter plate 3211 along the second direction Y. Two limit plates 323 are arranged on the adapter plate 3211, and the claw body 3212 is located between the two limit plates 323. A buffer spring 324 is pressed between the claw body 3212 and at least one limit plate 323. Specifically, when the two grasping portions 321 approach each other, the buffer spring 324 is compressed during the abutment of the two battery cells 41 to achieve buffering, thereby preventing the two battery cells 41 from being damaged due to hard contact. At the same time, the same effect is also achieved during the abutment of the battery cell 41 on one of the grasping portions 321 against the battery cell 41 already arranged on the support bar 34, thereby achieving dense arrangement of the battery cells 41 before shaping along the length direction of the battery module 4, thereby reducing the movement stroke of the battery cell 41 during the shaping process in the length direction of the battery module 4, and reducing the probability of the battery cell 41 being damaged due to friction with the support bar 34.

[0054] like Fig. 9 and Fig.10As shown, the side pressure mechanism 2 includes a main frame 21 slidably mounted on the side pressure platform 111 through a slide rail slider assembly, a first power cylinder 212 is provided on the side pressure platform 111, and is used to drive the main frame 21 to move along the first direction X, and a side pressure plate 211 is provided on the main frame 21 on the side facing the shaping space 112; a sub-frame 22 is slidably assembled on the main frame 21 through the slide rail slider assembly, and a second power cylinder 222 is provided on the main frame 21, and is used to drive the sub-frame 22 to move relative to the main frame 21 along the first direction X; a longitudinal pressure plate 221 is provided on the side of the sub-frame 22 facing the shaping space 112 through the slide rail slider assembly, and a third power cylinder 223 is provided on the sub-frame 22, and is used to drive the longitudinal pressure plate 221 to approach or move away from the shaping space 112 along the longitudinal direction Z. When in use, after the battery cells 41 on the support bar 34 are placed, the battery module 4 is shaped along the length direction through the movable end plate 304, the battery module 4 is shaped along the width direction through the relatively arranged side pressure plates 211, and the battery module 4 is shaped along the height direction through the longitudinal pressure plate 221; the battery module 4 after shaping is tied with a cable tie and then transported to the next workstation via the pallet 30.

[0055] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A battery cell stacking device, characterized in that: include: a rack having a stacking area and a transfer area; A tray is movably disposed on the frame, and the tray can reciprocate between the stacking area and the transfer area; A support bar, disposed on the tray, for supporting the battery cell; A claw assembly is movably arranged on the tray and is used to grab the battery cell to place it on the support bar. The claw assembly can drive the battery cell longitudinally to make the battery cell detach from the support bar.

2. The battery cell stacking device according to claim 1, characterized in that: The claw assembly includes a bracket, which can move along the extension direction of the support bar. The bracket is provided with a grasping portion for grasping the battery cell. The grasping portion and / or the bracket can move longitudinally so that the battery cell grasped by the grasping portion is separated from the support bar.

3. The battery cell stacking device according to claim 1, characterized in that: The claw assembly includes a bracket, the bracket can move along the extension direction of the support bar, and the bracket is provided with a grasping portion for grasping the battery cell; The tray is provided with a longitudinal plate, and the longitudinal plate can move along the extension direction of the support bar. The bracket is assembled on the longitudinal plate and can move longitudinally relative to the longitudinal plate.

4. The battery cell stacking device according to claim 2 or 3, characterized in that: The pallet is provided with a mounting column, the support bar is fixed to the pallet through the mounting column, and there is an adjustment space between the support bar and the pallet; The bracket extends into the adjustment space, and the grasping portion includes two claws symmetrically arranged with respect to the support bar, and the two claws can approach or move away from each other.

5. The battery cell stacking device according to claim 2 or 3, characterized in that: There are at least two grasping portions, which are spaced apart along the extending direction of the support bar, and two adjacent grasping portions can be close to or far away from each other.

6. The battery cell stacking device according to claim 4, characterized in that: The gripping portion further includes a bottom plate and two adapter plates corresponding to the two claws one by one, and a direction in which the two claws approach or move away from each other is defined as a first direction; The bottom plate is mounted on the bracket, the adapter plate is slidably connected to the bottom plate, and the adapter plate moves relative to the bottom plate along the first direction; The claw body is slidably mounted on the adapter plate, and the claw body moves along the second direction relative to the adapter plate. Two limit plates are arranged on the adapter plate, and the claw body is located between the two limit plates. A buffer spring is pressed between the claw body and at least one of the limit plates. The first direction, the second direction and the longitudinal direction are perpendicular to each other.

7. The battery cell stacking device according to claim 1, characterized in that: The frame is provided with a rack, and the rack is extended between the stacking area and the transfer area; The tray is provided with a gear and a first driving member. The gear is rotatably mounted on the tray and meshes with the rack. The first driving member is used to drive the gear to rotate.

8. The battery cell stacking device according to claim 1, characterized in that: The stacking area is provided with two side pressing tables, a shaping space is provided between the two side pressing tables, and the pallet is located in the shaping space; The tray is provided with an end pressing mechanism, and the side pressing platform is provided with a side pressing mechanism.

9. The battery cell stacking device according to claim 8, characterized in that: The end pressing mechanism comprises a movable end plate and a fixed end plate mounted on the tray, and both the movable end plate and the fixed end plate are provided with an escape notch for escaping the support bar, and the support bar can extend into the escape notch; The movable end plate can be close to or away from the fixed end plate.

10. The battery cell stacking device according to claim 8, characterized in that: The side pressing mechanism comprises a main frame slidably mounted on the side pressing platform, and a side pressing plate is arranged on the main frame on a side facing the shaping space; A sub-frame is slidably mounted on the main frame, and a longitudinal pressure plate is arranged on the side of the sub-frame facing the shaping space, and the longitudinal pressure plate can approach or move away from the shaping space in the longitudinal direction.

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