Battery cell stacking and transferring equipment

Abstract

The invention provides battery cell stacking and transferring equipment, which comprises a rack, a plurality of battery cells, a plurality of battery cells, a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, the tray is arranged on the rack and can do reciprocating motion between the stacking area and the transferring area; the side pressing mechanism is located on the side edge of the rack and is close to the stacking area; the end pressing mechanism is arranged on the tray and comprises a fixed part, a movable part and a supporting part which are arranged on the tray, the supporting part is located between the fixed part and the movable part, and the movable part can be close to or away from the fixed part; wherein the movable part comprises a movable plate, a movable pressure head and a claw body, the movable pressure head and the claw body are arranged on the movable plate, and the claw body can move in the length direction of the battery module and the width direction of the battery module relative to the movable pressure head. The claw body acts on the battery cell stack, the displacement amount of the battery cell in the width direction of the battery module in the shaping process of the side pressing mechanism can be reduced, the flatness of the side face of the battery module is guaranteed, and meanwhile viscose can be prevented from overflowing from the large face of the battery cell.

Description

Technical Field

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

[0002] like Fig.12 and Fig.13 As shown, the battery module 5 is formed by stacking a plurality of battery cells 51, and the stacked battery cells 51 need to be shaped by a side pressure mechanism to ensure the flatness of the side surface of the battery module 5. Since adhesive is coated between two adjacent battery cells 51 when they are stacked, if the battery cell 51 has a large displacement in the width direction Y of the battery module during the shaping process of the side pressure mechanism, there is a risk that the adhesive will overflow from the large surface 510 of the battery cell to the side surface 511 of the battery cell. Therefore, how to ensure the accuracy of the position of the single battery cell 51 in the width direction Y of the battery module during the stacking process of the battery cell 51 is an urgent problem to be solved. 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 and transporting device, which can reduce the displacement of the battery cell when the side pressure mechanism acts, thereby avoiding the risk of adhesive overflowing from a large surface of the battery cell.

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

[0005] A battery cell stacking and transfer equipment comprises: a frame having a stacking area and a transfer area spaced apart along a first direction; a tray arranged on the frame and capable of reciprocating between the stacking area and the transfer area; a side pressure mechanism located at the side of the frame and arranged close to the stacking area; an end pressure mechanism arranged on the tray, comprising a fixed portion, a movable portion and a supporting portion arranged on the tray, the supporting portion being located between the fixed portion and the movable portion, and the movable portion being capable of approaching or moving away from the fixed portion; wherein the movable portion comprises a movable plate, a movable pressure head and a claw body, the movable pressure head and the claw body being arranged on the movable plate, and the claw body being capable of moving relative to the movable pressure head in the length direction and the width direction of the battery module.

[0006] According to a preferred embodiment, the movable pressure head includes a first pressure plate arranged on the movable plate, the first pressure plate is configured with a first end pressure surface on the side facing the fixed part, and a first limiting component is arranged on the surrounding side of the first end pressure surface for limiting the first end plate of the battery module.

[0007] According to a preferred embodiment, the claw body is provided with a first limiting surface and a second limiting surface perpendicular to each other, the length direction of the battery module is perpendicular to the first limiting surface, and the width direction of the battery module is perpendicular to the second limiting surface.

[0008] According to a preferred embodiment, the movable plate is slidably connected to the tray, a ball screw is rotatably mounted on the tray, and the movable plate is transmission-connected to the ball screw; the axial direction of the ball screw is parallel to the length direction of the battery module.

[0009] According to a preferred embodiment, a baffle is provided on the movable plate, the first pressure plate is slidably provided on the movable plate, and the first pressure plate is located between the fixed portion and the baffle; a pressure sensor is provided on the baffle, and the pressure sensor is located between the first pressure plate and the baffle.

[0010] According to a preferred embodiment, an adjustment gap is provided between the first pressure plate and the movable plate, a support plate is adjustably provided in the adjustment gap, the support plate can approach or move away from the fixed portion along the length direction of the battery module, and the support plate can extend below the first end pressure surface to support the first end plate of the battery module.

[0011] According to a preferred embodiment, the fixing portion includes a main board fixedly mounted on the tray, and a sub-board slidably mounted on the tray, wherein the sub-board is located between the main board and the supporting portion; a second end pressure surface is provided on the side of the sub-board facing the supporting portion, for assembling the second end plate of the battery module; a driving member is provided on the main board or the tray, for driving the sub-board to approach or move away from the supporting portion along the length direction of the battery module; a self-locking member is provided on the main board, for upper limiting the sub-board in the length direction of the battery module.

[0012] According to a preferred embodiment, the self-locking member includes an adjustment plate and a locking plate that are connected to each other, wherein: the adjustment plate is adjustably arranged on the main plate, and the locking plate is extended from the main plate toward the sub-plate, and when the sub-plate is in a locked state, the locking plate abuts against the sub-plate in the length direction of the battery module, and when the sub-plate is in an unlocked state, the locking plate disengages from the sub-plate in the length direction of the battery module.

[0013] According to a preferred embodiment, the side pressure mechanism includes a main frame and a sub-frame, the sub-frame is slidably connected to the main frame, and a side pressure plate is provided on the side of the sub-frame facing the stacking area; a stabilizing gear is rotatably mounted on the main frame, and a stabilizing rack meshing with the stabilizing gear is provided on the sub-frame.

[0014] According to a preferred embodiment, a longitudinal pressure assembly is provided on the sub-frame, and the longitudinal pressure assembly includes a translation plate slidably provided on the sub-frame, and the translation plate can approach or move away from the stacking area, and a longitudinal plate is provided at the end of the translation plate close to the stacking area, and the longitudinal plate can move in the longitudinal direction, and a pressure wheel for pressing the battery cell is arranged on the longitudinal plate.

[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, after the battery cells are loaded onto the support portion, the battery cells are positioned on the support portion in the width direction of the battery module by means of claws, and then the battery cells are stacked in sequence in the length direction of the battery module, and finally further shaped by means of a side pressing mechanism. Here, the precise stacking of the battery cells by the claws can greatly reduce the displacement of the battery cells in the width direction of the battery module during the shaping process of the side pressing mechanism, and can prevent the adhesive from overflowing from the large surface of the battery cell to the side of the battery cell while ensuring the flatness of the side of the battery module. 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 and transporting device provided in an embodiment of the present invention;

[0019] Figure 2 A first schematic diagram of the assembly structure of the rack, tray, side pressure mechanism and end pressure mechanism provided by an embodiment of the present invention;

[0020] Figure 3 A second schematic diagram of the assembly structure of the rack, tray, side pressure mechanism and end pressure mechanism provided by the embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a three-dimensional structure in which an end pressing mechanism provided by an embodiment of the present invention is assembled on a tray;

[0022] Figure 5 A schematic diagram of a first three-dimensional structure of a movable part provided by an embodiment of the present invention;

[0023] Figure 6 A second three-dimensional structural schematic diagram of the movable part provided by an embodiment of the present invention;

[0024] Figure 7A schematic diagram of the three-dimensional structure of a fixing portion provided in an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of a first three-dimensional structure of a sub-plate provided in an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of a second three-dimensional structure of a sub-plate provided in an embodiment of the present invention;

[0027] Fig.10 A schematic diagram of a first three-dimensional structure of a side pressure mechanism provided in an embodiment of the present invention;

[0028] Fig.11 A second three-dimensional structural schematic diagram of the side pressure mechanism provided by an embodiment of the present invention;

[0029] Fig.12 A schematic diagram of the three-dimensional structure of a battery module provided by an embodiment of the present invention;

[0030] Fig.13 A schematic diagram of the three-dimensional structure of a battery cell provided in an embodiment of the present invention.

[0031] Icons: 1. Feeding mechanism; 2. Frame; 201. Stacking area; 202. Transfer area; 21. Side pressure mechanism; 211. Main frame; 212. Sub-frame; 2121. Side pressure plate; 213. Stable gear; 214. Stable rack; 215. Longitudinal pressure assembly; 2151. Translation plate; 2152. Longitudinal plate; 2153. Pressing wheel; 22. End pressure mechanism; 221. Fixed part; 2210. Main board; 2211. Sub-board; 2212. Second end pressure surface; 2213. Driving member; 2214. Self-locking member; 22141. Adjustment plate; 22142. Locking plate; 222. Movable part; 2220. First pressure plate; 22201. First end pressure surface; 22202. First limit block; 2221. Movable plate; 22210, second limit block; 2222, horizontal pressure block; 2223, longitudinal pressure plate; 22231, longitudinal pressure frame; 22232, longitudinal pressure head; 2224, claw body; 22241, first limit surface; 22242, second limit surface; 2225, slide cylinder; 2226, support plate; 2227, baffle; 2228, pressure sensor; 223, support part; 3, gantry; 31, unloading gripper; 4, tray; 41, ball screw; 5, battery module; 51, battery cell; 510, large surface of battery cell; 511, side surface of battery cell; 52, first end plate; 53, second end plate; 54, hoop ring; X, length direction of battery module; Y, width direction of battery module; Z, longitudinal direction. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Please refer to Figures 1 to 13, a battery cell stacking and transferring equipment, comprising a frame 2, a tray 4, a side pressing mechanism 21 and an end pressing mechanism 22, the frame 2 having a stacking area 201 and a transfer area 202 spaced apart along a first direction; the tray 4 is arranged on the frame 2 and can reciprocate between the stacking area 201 and the transfer area 202; the side pressing mechanism 21 is located at the side of the frame 2 and is arranged close to the stacking area 201; the end pressing mechanism 22 is arranged on the tray 4, comprising a fixed portion 221, a movable portion 222 and a supporting portion 223 arranged on the tray 4, the supporting portion 223 is located between the fixed portion 221 and the movable portion 222, and the movable portion 222 can approach or move away from the fixed portion 221; wherein the movable portion 222 comprises a movable plate 2221, a movable pressure head and a claw body 2224, the movable pressure head and the claw body 2224 are arranged on the movable plate 2221, and the claw body 2224 can move relative to the movable pressure head in the length direction X of the battery module and the width direction Y of the battery module. In this embodiment, the battery cells 51 that form the battery module 5 are stacked on the support portion 223. Specifically, after the battery cells 51 are loaded onto the support portion 223, the battery cells 51 are positioned on the support portion 223 in the width direction Y of the battery module by the claw body 2224, and then the battery cells 51 are stacked in sequence in the length direction X of the battery module, and finally further shaped by the side pressing mechanism 21. In this way, the flatness of the side of the battery module 5 can be ensured, which is beneficial to improving the stacking quality of the battery cells 51. Since glue needs to be applied between two adjacent battery cells 51 when they are stacked, the displacement of the battery cell 51 in the width direction Y of the battery module during the shaping step of the side pressure mechanism 21 should not be too large, otherwise there is a risk of glue overflowing from the large surface 510 of the battery cell to the side surface 511 of the battery cell. Therefore, it is necessary to accurately place the battery cell 51 in the width direction Y of the battery module by the claw body 2224 before the overall shaping of the side pressure mechanism 21, which can greatly reduce the displacement of the battery cell 51 in the width direction Y of the battery module during the shaping process of the side pressure mechanism 21. The battery module 5 after shaping is transferred from the stacking area 201 to the transfer area 202 for unloading or further processing through the tray 4.

[0036] The claw body 2224 is provided with a first limiting surface 22241 and a second limiting surface 22242 which are perpendicular to each other. The length direction X of the battery module is perpendicular to the first limiting surface 22241, and the width direction Y of the battery module is perpendicular to the second limiting surface 22242. When in use, the first limiting surface 22241 is attached to the large surface 510 of the battery cell, and the second limiting surface 22242 is attached to the side surface 511 of the battery cell. The two claw bodies 2224 which are arranged opposite to each other cooperate with each other to position the battery cell 51 in the width direction Y of the battery module.

[0037] In this embodiment, Figure 5As shown, a slide cylinder 2225 is provided on the movable plate 2221 for driving the claw body 2224 to move along the length direction X of the battery module. The slide cylinder 2225 is provided with a cylinder or electric cylinder for driving the claw body 2224 to move along the width direction Y of the battery module. The cylinder or electric cylinder is driven by the slide cylinder 2225 to move synchronously with the claw body 2224 along the length direction X of the battery module.

[0038] like Figure 4 As shown, the movable plate 2221 is slidably connected to the tray 4 through a slide rail slider assembly, a ball screw 41 is rotatably mounted on the tray 4, and the movable plate 2221 is transmission-connected to the ball screw 41; the axial direction of the ball screw 41 is parallel to the length direction X of the battery module. The ball screw here accurately controls the position of the battery cell 51 in the length direction X of the battery module, thereby effectively ensuring the accuracy between the stacked battery cells 51, that is, the battery cells 51 in the battery module 5.

[0039] Furthermore, if Figure 5 and Figure 6 As shown, the movable pressing head includes a first pressing plate 2220 disposed on the movable plate 2221, and a first end pressing surface 22201 is disposed on the side of the first pressing plate 2220 facing the fixed portion 221, and a first limiting component is disposed around the first end pressing surface 22201 to limit the first end plate 52 of the battery module 5. When in use, the first end plate 52 is attached to the first end pressing surface 22201 and is limited and fixed in the first end pressing surface 22201 area by the first limiting component; when the battery cells 51 of the battery module 5 are stacked, the movable plate 2221 moves toward the supporting portion 223 to attach the first end plate 52 to the large surface 510 of the battery cell.

[0040] like Figure 5 As shown, the first limit assembly includes a transverse limiter and a longitudinal limiter, wherein the transverse limiter includes a transverse pressing block 2222 slidably disposed on the first pressing plate 2220 through the slide rail slider assembly, and the transverse pressing block 2222 is driven by a cylinder disposed on the first pressing plate 2220 to abut against or disengage from the first end plate 52 in the horizontal direction. In this embodiment, there are two transverse limiters, which are disposed relatively to the center of the first end pressing surface 22201.

[0041] The longitudinal limit member includes a longitudinal pressure plate 2223 which is slidably installed on the first pressure plate 2220 through a slide rail slider assembly. A longitudinal pressure frame 22231 is provided on the longitudinal pressure plate 2223. The longitudinal pressure frame 22231 extends to above the first end pressure surface 22201. The longitudinal pressure plate 2223 is driven by a cylinder or an electric cylinder provided on the first pressure plate 2220 to move in the longitudinal direction Z so that the longitudinal pressure head 22232 provided on the total pressure frame abuts against or disengages from the first end plate 52.

[0042] In this embodiment, there is an adjustment gap (not shown in the figure) between the first pressing plate 2220 and the movable plate 2221, and a support plate 2226 is adjustably arranged in the adjustment gap. The support plate 2226 can approach or move away from the fixed portion 221 along the length direction X of the battery module, and the support plate 2226 can extend below the first end pressing surface 22201 to support the first end plate 52 of the battery module 5. Preferably, the support plate 2226 is slidably installed on the movable plate 2221 through a slide rail slider assembly, and the support plate 2226 cooperates with the longitudinal pressure head 22232 to limit the first end plate 52 in the longitudinal direction Z. In use, after the first end plate 52 is assembled, the support plate 2226 moves toward the side away from the fixed portion 221 so that the support plate 2226 is separated from the first end plate 52, so as to facilitate the setting of the hoop ring 54 on the first end plate 52.

[0043] like Figure 5 As shown, a baffle 2227 is provided on the movable plate 2221, and a first pressing plate 2220 is slidably provided on the movable plate 2221, and the first pressing plate 2220 is located between the fixed portion 221 and the baffle 2227; a pressure sensor 2228 is provided on the baffle 2227, and the pressure sensor 2228 is located between the first pressing plate 2220 and the baffle 2227. In this embodiment, the first pressing plate 2220 is slidably connected to the movable plate 2221 through a slide rail slider assembly. In the process of applying pressure from the movable end toward the fixed end to shape the battery module 5, the first pressing plate 2220 has a small movement toward the baffle 2227, so as to monitor the pressure value through the pressure sensor 2228 to determine the shaping force of the battery module 5.

[0044] In this embodiment, in order to limit the movement range of the first pressing plate 2220, as shown in FIG. Figure 5 As shown, a first limiting block 22202 is provided on the first pressing plate 2220, a second limiting block 22210 is provided on the movable plate 2221, a limiting notch is provided on the first limiting block 22202, and the second limiting block 22210 is embedded in the limiting notch.

[0045] like Figure 4 , Figure 7 , Figure 8 and Fig. 9As shown, the fixing portion 221 includes a main board 2210 fixedly mounted on the tray 4, and a sub-board 2211 slidably mounted on the tray 4, wherein the sub-board 2211 is located between the main board 2210 and the supporting portion 223; a second end pressing surface 2212 is provided on the side of the sub-board 2211 facing the supporting portion 223, for assembling the second end plate 53 of the battery module 5; a driving member 2213 is provided on the main board 2210 or the tray 4, for driving the sub-board 2211 to approach or move away from the supporting portion 223 along the length direction X of the battery module; a self-locking member 2214 is provided on the main board 2210, for upper-limiting the sub-board 2211 in the length direction X of the battery module. In this embodiment, the sub-plate 2211 is slidably connected to the tray 4 through a sliding rail slider assembly, and the second end plate 53 is attached to the second end pressure surface 2212. Corresponding to the first end pressure surface 22201, a second limiting assembly for limiting the second end plate 53 is arranged around the second end pressure surface 2212. The structure and working principle of the second limiting assembly here are the same as the aforementioned first limiting assembly, and will not be repeated here.

[0046] Specifically, when the second baffle 2227 needs to be assembled, the self-locking member 2214 releases the lock on the sub-plate 2211, and the sub-plate 2211 is driven by the cylinder or electric cylinder (driving member 2213) arranged on the tray 4 or the main plate 2210 to move toward the main plate 2210 to free up space between the sub-plate 2211 and the support portion 223 to facilitate the assembly of the second end plate 53; when the second end plate 53 is assembled, the sub-plate 2211 moves toward the support portion 223 to reach the working position, and is locked by the self-locking member 2214.

[0047] In this embodiment, Figure 7 As shown, the self-locking member 2214 includes an adjusting plate 22141 and a locking plate 22142 connected to each other, wherein: the adjusting plate 22141 is adjustably arranged on the main board 2210, and the locking plate 22142 is extended toward the sub-board 2211. When the sub-board 2211 is in a locked state, the locking plate 22142 abuts against the sub-board 2211 in the length direction X of the battery module, and when the sub-board 2211 is in an unlocked state, the locking plate 22142 is out of contact with the sub-board 2211 in the length direction X of the battery module. The adjusting plate 22141 is slidably connected to the main board 2210 through a slide rail and slider assembly, and is driven by a cylinder or an electric cylinder arranged on the main board 2210 to move along the longitudinal direction Z, thereby driving the locking plate 22142 to move relative to the sub-board 2211 in the longitudinal direction Z to unlock or lock the sub-board 2211.

[0048] In some embodiments, the main board 2210 and the tray 4 are detachably assembled by bolts, so as to facilitate the adjustment of the assembly position of the fixing portion 221 on the tray 4 to adapt to the processing of battery modules 5 of different specifications.

[0049] like Fig.10 and Fig.11 As shown, the side pressure mechanism 21 includes a main frame 211 and a sub-frame 212. The sub-frame 212 is slidably connected to the main frame 211 through a slide rail slider. A side pressure plate 2121 is provided on the side of the sub-frame 212 facing the stacking area 201. A longitudinal pressure assembly 215 is slidably mounted on the sub-frame 212 through a slide rail slider assembly, which is used to Z-shape the battery module 5 in the longitudinal direction to ensure the flatness of the bottom of the battery module 5. In this embodiment, an electric cylinder for driving the sub-frame 212 is provided on the main frame 211. In order to improve the stability of the movement of the sub-frame 212, a stabilizing gear 213 is rotatably installed on the main frame 211, and a stabilizing rack 214 meshing with the stabilizing gear 213 is provided on the sub-frame 212.

[0050] Specifically, the longitudinal pressing assembly 215 includes a translation plate 2151 arranged on the sub-frame 212 through a slide rail slider assembly. The translation plate 2151 is driven by an electric cylinder arranged between the sub-frame 212 and the translation plate 2151 to approach or move away from the stacking area 201. The end of the translation plate 2151 close to the stacking area 201 is provided with a longitudinal plate 2152 through the slide rail slider assembly. The longitudinal plate 2152 is driven by an electric cylinder arranged on the translation plate 2151 to move along the longitudinal direction Z. The longitudinal plate 2152 is provided with a pressing wheel 2153 for pressing the battery cell 51.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments, two sets of racks 2 may be used in conjunction with two sets of side pressure mechanisms 21 and trays 4 to improve processing efficiency. Specifically, the battery cells 51 are supplied to the support portion 223 through the feeding mechanism 1 and stacked through the end pressure mechanism 22. After the battery modules 5 are shaped and formed by the side pressure mechanism 21, they are transported to the transfer area 202. The battery modules 5 on the two trays 4 can be unloaded by the unloading gripper 31 set on the gantry 3. The feeding mechanism 1 includes but is not limited to a robotic arm.

[0052] 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 and transporting device, characterized in that: include: A frame having a stacking area and a transfer area spaced apart along a first direction; A tray, disposed on the frame and capable of reciprocating between the stacking area and the transfer area; A side pressure mechanism, located at the side of the frame and close to the stacking area; The end pressure mechanism is arranged on the tray, and comprises a fixed part, a movable part and a supporting part arranged on the tray, wherein the supporting part is between the fixed part and the movable part, and the movable part can be close to or away from the fixed part; wherein, The movable part includes a movable plate, a movable pressure head and a claw body, wherein the movable pressure head and the claw body are arranged on the movable plate, and the claw body can move relative to the movable pressure head in the length direction of the battery module and the width direction of the battery module.

2. The battery cell stacking and transporting equipment according to claim 1, characterized in that: The movable pressure head includes a first pressure plate arranged on the movable plate, the first pressure plate is provided with a first end pressure surface on a side facing the fixed portion, and a first limiting component is provided around the first end pressure surface for limiting the first end plate of the battery module.

3. The battery cell stacking and transporting equipment according to claim 1, characterized in that: The claw body is provided with a first limiting surface and a second limiting surface perpendicular to each other, the length direction of the battery module is perpendicular to the first limiting surface, and the width direction of the battery module is perpendicular to the second limiting surface.

4. The battery cell stacking and transporting equipment according to claim 1, characterized in that: The movable plate is slidably connected to the tray, a ball screw is rotatably mounted on the tray, and the movable plate is transmission-connected to the ball screw; The axial direction of the ball screw is parallel to the length direction of the battery module.

5. The battery cell stacking and transporting equipment according to claim 2, characterized in that: The movable plate is provided with a baffle, the first pressing plate is slidably arranged on the movable plate, and the first pressing plate is located between the fixing portion and the baffle; A pressure sensor is disposed on the baffle plate, and the pressure sensor is located between the first pressure plate and the baffle plate.

6. The battery cell stacking and transporting equipment according to claim 2, characterized in that: An adjustment gap is provided between the first pressure plate and the movable plate, and a support plate is adjustably provided in the adjustment gap. The support plate can approach or move away from the fixed portion along the length direction of the battery module, and the support plate can extend below the first end pressure surface to support the first end plate of the battery module.

7. The battery cell stacking and transporting equipment according to claim 1, characterized in that: The fixing part includes a main board fixedly mounted on the tray, and a sub-board slidably mounted on the tray, wherein the sub-board is located between the main board and the supporting part; The side of the auxiliary plate facing the supporting portion is provided with a second end pressing surface for assembling the second end plate of the battery module; The main board or the tray is provided with a driving member for driving the auxiliary board to approach or move away from the supporting portion along the length direction of the battery module; The main board is provided with a self-locking member for limiting the position of the sub-board in the length direction of the battery module.

8. The battery cell stacking and transporting equipment according to claim 7, characterized in that: The self-locking member comprises an adjusting plate and a locking plate connected to each other, wherein: The adjustment plate is adjustably arranged on the main plate, and the locking plate is extended from the main plate toward the sub-plate. When the sub-plate is in a locked state, the locking plate abuts against the sub-plate in the length direction of the battery module. When the sub-plate is in an unlocked state, the locking plate disengages from the sub-plate in the length direction of the battery module.

9. The battery cell stacking and transporting equipment according to claim 1, characterized in that: The side pressure mechanism comprises a main frame and a sub-frame, the sub-frame is slidably connected to the main frame, and a side pressure plate is provided on the side of the sub-frame facing the stacking area; A stabilizing gear is rotatably mounted on the main frame, and a stabilizing rack meshing with the stabilizing gear is arranged on the auxiliary frame.

10. The battery cell stacking and transporting equipment according to claim 9, characterized in that: A longitudinal pressing assembly is arranged on the sub-frame, and the longitudinal pressing assembly includes a translation plate slidably arranged on the sub-frame, and the translation plate can approach or move away from the stacking area. A longitudinal plate is arranged at the end of the translation plate close to the stacking area, and the longitudinal plate can move longitudinally. A pressing wheel for pressing the battery cell is arranged on the longitudinal plate.

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