CN212874565U

CN212874565U - Battery core lamination device

Info

Publication number: CN212874565U
Application number: CN202022221163.6U
Authority: CN
Inventors: 秦洁; 王轩; 陈锡春
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-02
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a battery core lamination device, which comprises a mounting seat, a first driving unit, a second driving unit, a third driving unit, a lamination platform and a pressing and holding piece, wherein the first driving unit, the second driving unit, the third driving unit, the lamination platform and the pressing and holding piece are arranged on the mounting seat; the first driving unit is connected with the lamination platform to drive the lamination platform to move along the up-down direction, the second driving unit is connected with the third driving unit, the third driving unit is connected with the pressing piece, the second driving unit is used for driving the third driving unit and the pressing piece to move along the length direction, and the third driving unit is used for driving the pressing piece to move along the up-down direction; the second driving unit comprises a second motor, a gear and a rack movably arranged on the mounting seat along the length direction, the rack is connected with the third driving unit, and the second motor is used for driving the gear to rotate so as to drive the rack to drive the third driving unit and the pressing and holding piece to move along the length direction. The battery core lamination device can press and hold battery core pole pieces with different sizes, and can improve the lamination efficiency and precision.

Description

Battery core lamination device

Technical Field

The disclosure relates to the technical field of laminated batteries, in particular to a battery core laminating device.

Background

At present, a lithium battery cell is a lamination mode based on Z-shaped lamination in the lamination process. The basic principle is as follows: the positive pole piece and the negative pole piece are separated by a diaphragm, and the negative pole piece and the positive pole piece are sequentially folded and placed on the lamination platform by a sucker or a gripper and sequentially and circularly reciprocate. Finally, the battery core with certain thickness and high precision requirement is formed.

In the specific lamination process, the electrode plate is pressed by the pressing device, and the pressing piece on the pressing device continuously realizes the actions of extending, pressing, lifting and retracting in the lamination process. The conventional tabletting device drives a driving structure for stretching and retracting a pressing sheet, has short driving stroke and fixed stroke, cannot be adjusted and is difficult to be compatible with electric cores of various sizes; in addition, under the quick action, the pressing sheet action driving structure can vibrate under the driving action, and the efficiency and the precision of the lamination are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery core lamination device, this battery core lamination device can press the not unidimensional electric core pole piece and hold to can improve the efficiency and the precision of lamination.

In order to achieve the above object, the present disclosure provides a cell lamination device, which includes a mounting seat, a first driving unit, a second driving unit, a third driving unit, a lamination platform for placing a cell pole piece, and a pressing piece for pressing and holding the cell pole piece, where the first driving unit, the second driving unit, the third driving unit are disposed on the mounting seat; the first driving unit is used for being connected with the lamination platform to drive the lamination platform to move along the up-down direction, the second driving unit is connected with the third driving unit, the third driving unit is connected with the pressing piece, the second driving unit is used for driving the third driving unit and the pressing piece to move along the length direction of the lamination platform so as to be close to or far away from the battery cell pole piece placed on the lamination platform, and the third driving unit is used for driving the pressing piece to move along the up-down direction;

the second driving unit comprises a second motor, a gear and a rack, the rack is used for being connected with the third driving unit, the second motor is used for driving the gear to rotate so as to drive the rack meshed with the gear to drive the third driving unit and the pressing piece to move along the length direction.

Optionally, the pressing and holding pieces include a first pressing and holding piece group and a second pressing and holding piece group which are arranged along the width direction of the lamination platform, the first pressing and holding piece group includes two first pressing and holding pieces which are respectively arranged on two sides of the lamination platform in the length direction, the second pressing and holding piece group includes two second pressing and holding pieces which are respectively arranged on two sides of the lamination platform in the length direction, and the third driving unit includes four third driving modules which are respectively used for driving the four pressing and holding pieces to move up and down; the number of the second motors and the number of the gears are two, the racks comprise a first rack group and a second rack group, the first rack group comprises two first racks, and the second rack group comprises two second racks; the two first racks are respectively used for being connected with the two third driving modules corresponding to the two first pressing and holding pieces, the two second racks are respectively used for being connected with the two third driving modules corresponding to the two second pressing and holding pieces, one of the second motors is used for driving one of the gears to rotate so as to drive the two first racks to synchronously move in the opposite direction or in the opposite direction along the length direction, and the other second motor is used for driving the other gear to rotate so as to drive the two second racks to synchronously move in the opposite direction or in the opposite direction along the length direction.

Optionally, a first mounting plate is arranged on the mounting seat, the thickness direction of the first mounting plate is parallel to the width direction, the first rack group and the second rack group are respectively arranged on two first side surfaces of the first mounting plate opposite to each other in the width direction, both the first racks are movably arranged on one of the first side surfaces of the first mounting plate in the length direction, and the two first racks are arranged at intervals in the up-down direction and at least partially overlap in projection in the up-down direction; the two second racks are movably arranged on the other first side face of the first mounting plate along the length direction, and the two second racks are arranged at intervals along the vertical direction and at least partially overlap in projection in the vertical direction.

Optionally, the second driving unit further comprises a guide mechanism for guiding the rack to move;

the guide mechanism comprises a guide groove and a guide rail, the guide groove is arranged in the mounting seat and extends along the length direction, the guide rail is slidably arranged in the guide groove, one end of the guide rail is used for being connected with the third driving unit, and the other end of the guide rail is used for being connected with the rack.

Optionally, the second motor is a servo motor or a stepper motor.

Optionally, the first driving unit comprises a first motor, a first synchronizing wheel, a second synchronizing wheel, a synchronous belt and a screw nut assembly, the first motor is connected with the first synchronizing wheel, the synchronous belt is used for connecting the first synchronizing wheel and the second synchronizing wheel, a screw of the screw nut assembly extends along the vertical direction and is rotatably arranged on the mounting seat, the second synchronizing wheel is used for connecting the screw, and a nut of the screw nut assembly is used for connecting the lamination platform.

Optionally, the first driving unit further includes a supporting plate and a plurality of supporting rods, a second mounting plate extending in the horizontal direction is formed on the mounting base, a plurality of mounting holes are formed in the second mounting plate, the supporting rods extend in the vertical direction and movably penetrate through the mounting holes in the vertical direction, an end portion of the supporting rod above the second mounting plate is used for being connected with the lamination platform, an end portion of the supporting rod below the second mounting plate is used for being connected with the supporting plate, the screw rod is rotatably disposed on the second mounting plate, and the nut is used for connecting the supporting plate.

Optionally, the lamination platform includes a main supporting plate and two end supporting plates, the main supporting plate and the two end supporting plates are independent of each other, the two end supporting plates are respectively located at two ends of the main supporting plate along the length direction, one of the supporting rods is used for connecting the main supporting plate, and the other supporting rod is used for connecting the end supporting plate.

Optionally, the third driving unit includes a cylinder block, a cylinder, a connecting arm, and a rotating arm, the cylinder block is configured to be connected to the rack, the cylinder is disposed on the cylinder block, a cylinder rod of the cylinder extends in an up-down direction, and the rotating arm is connected to the pressing piece;

the first end of the rotating arm is hinged to the air cylinder seat through a first rotating shaft extending along the width direction of the lamination platform, the second end of the rotating arm is hinged to the first end of the connecting arm through a second rotating shaft extending along the width direction, and the second end of the connecting arm is hinged to the air cylinder rod through a third rotating shaft extending along the width direction.

Optionally, the cylinder further comprises a U-shaped bracket disposed at one end of the cylinder rod away from the cylinder body, the U-shaped bracket comprises a middle plate and end plates disposed at two ends of the middle plate, the middle plate is used for being connected with the cylinder rod, and the third rotating shaft is rotatably mounted on the two end plates.

In the technical scheme, the second driving unit is set to be the driving mode of matching the second motor, the gear and the rack, when the second motor is in a working state, the gear can be driven to rotate, and the rack meshed with the gear is driven to drive the pressing piece to move along the length direction. That is to say, at this kind of drive mode, through the rotary motion with the second motor convert the rack at length direction's linear motion, the rotation angle of control this second motor alright in order to control the distance of rack at length direction motion, and then just so can adjust the distance that the pressure piece of being connected with this rack is close to or is kept away from the electric core pole piece of placing on the lamination platform. When the battery pole pieces with different lengths are placed on the lamination platform, the distance of the rack moving in the length direction can be adjusted by adjusting the rotation angle of the second motor, namely the distance of the pressing and holding piece close to or far away from the battery pole piece arranged on the lamination platform in the length direction is adjusted, so that the pressing and holding requirements of the battery pole pieces with different lengths placed on the lamination platform are met. The compatible range of the cell lamination device to the size of the cell pole piece is improved; and this kind of second motor passes through the mode that gear drive rack made linear motion, and drive accuracy is higher, action response is fast, can improve the efficiency of lamination effectively.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a partial structure of a cell lamination device according to an embodiment of the present disclosure;

FIG. 2 is a side view of FIG. 1 in the width direction;

FIG. 3 is a side view of FIG. 1 taken along the length thereof;

fig. 4 is a schematic partial structural view of a cell lamination device according to an embodiment of the present disclosure, in which a first driving unit, a lamination platform, and a mounting seat are shown;

fig. 5 is a partial structural schematic diagram of a cell lamination device according to an embodiment of the present disclosure, in which a second driving unit, a third driving unit, a holding piece, and a first mounting plate are shown;

FIG. 6 is a side view in the width direction of FIG. 5;

fig. 7 is a schematic structural diagram of a third driving unit of a cell lamination device according to an embodiment of the present disclosure, wherein a pressing sheet is further illustrated in the diagram;

fig. 8 is a side view in the width direction of fig. 7.

Description of the reference numerals

1 first drive unit 11 first motor

12 first synchronizing wheel 13 second synchronizing wheel

14 synchronous belt 15 lead screw nut assembly

151 lead screw 152 nut

16 supporting plate 17 supporting rod

2 second drive unit 21 first motor

211 motor mounting bracket 22 gear

23 rack 231 first rack

3 third drive unit 30 third drive module

31 cylinder block 32 cylinder

321 air cylinder rod 322 cylinder body

323U-shaped support 3231 intermediate plate

3232 end plate 33 swivel arm

331 first rotating shaft 332 second rotating shaft

34 third rotating shaft of connecting arm 341

35 connecting block

4 laminated platform 41 main pallet

42 end pallet 5 holding piece

51 first pressing piece 52 second pressing piece

61 guide groove 62 guide rail

10 mounting base 101 first mounting plate

1011 second mounting plate on first side 102

100-cell pole piece 200 linear bearing

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of the terms "upper and lower" in the orientation without a contrary explanation generally refers to the upper and lower as defined in the normal use condition of the cell lamination device of the present disclosure; the use of the terms of orientation such as "length direction and width direction" refer to the direction of the long side and the direction of the short side of the lamination platform, respectively; defining the length direction as L and the width direction as W, wherein the up, down, length direction and width direction can be specifically referred to as shown in FIG. 1; in addition, terms such as "first, second, and third" are used merely to distinguish one element from another, and are not sequential or significant.

As shown in fig. 1 to 8, the present disclosure provides a cell lamination device, which includes a mounting base 10, a first driving unit 1, a second driving unit 2, a third driving unit 3, a lamination platform 4 for placing a cell pole piece 100, and a pressing piece 5 for pressing and holding the cell pole piece 100, which are disposed on the mounting base 10. The first driving unit 1 is used for being connected with the lamination platform 4 to drive the lamination platform 4 to move in the up-down direction, the second driving unit 2 is connected with the third driving unit 3, the third driving unit 3 is connected with the pressing piece 5, the second driving unit 2 is used for driving the third driving unit 3 and the pressing piece 5 to move in the length direction of the lamination platform 4 so as to be close to or far away from the battery cell pole piece 100 placed on the lamination platform 4, and the third driving unit 3 is used for driving the pressing piece 5 to move in the up-down direction. The second driving unit 2 includes a second motor 21 fixedly disposed on the mounting base 10, a gear 22, and a rack 23 movably disposed on the mounting base 10 along the length direction, the rack 23 is used for connecting with the third driving unit 3, the second motor 21 is used for driving the gear 22 to rotate, so as to drive the rack 23 engaged with the gear 22 to drive the third driving unit 3 and the holding-down piece 5 to move along the length direction.

In the above technical solution, the second driving unit 2 is set to be a driving mode in which the second motor 21, the gear 22 and the rack 23 are matched, so that when the second motor 21 is in a working state, the gear 22 can be driven to rotate, and the rack 23 engaged with the gear 22 is driven to drive the holding-pressing piece 5 to move along the length direction. That is to say, in this driving manner, the rotation angle of the second motor 21 is controlled by converting the rotation motion of the second motor 21 into the linear motion of the rack 23 in the length direction, so that the distance of the movement of the rack 23 in the length direction can be controlled, and further, the distance of the pressing and holding piece 5 connected to the rack 23 approaching or departing from the battery cell pole piece 100 placed on the lamination platform 4 can be adjusted. When the battery cell pole pieces 100 with different lengths are placed on the lamination platform 4, the distance of the movement of the rack 23 in the length direction can be adjusted by adjusting the rotation angle of the second motor 21, that is, the distance of the pressing and holding piece 5 in the length direction close to or far away from the battery cell pole piece 100 arranged on the lamination platform 4 is adjusted, so as to meet the pressing and holding requirements of the battery cell pole pieces 100 with different lengths placed on the lamination platform 4. The compatibility range of the cell lamination device to the size of the cell pole piece 100 is improved; in addition, the second motor 21 drives the rack 23 to do linear motion through the gear 22, so that the driving precision is higher, the action response is quick, and the lamination efficiency can be effectively improved.

In a specific embodiment of lamination, firstly, a transportation structure such as a suction cup (not shown) or a gripper (not shown) places a cell pole piece 100 on the lamination platform 4, and after the placement is completed, the second motor 21 rotates clockwise by a certain angle to drive the rack 23 to drive the pressing piece 5 to approach the cell pole piece 100 placed on the lamination platform 4 along the length direction, so that the pressing piece 5 can cover the pressing part of the cell pole piece 100 in the up-down direction; secondly, the third driving unit 3 drives the pressing sheet 5 to move downwards to press and hold the cell pole piece 100, so that the cell pole piece 100 can be connected with a diaphragm (not shown) below the cell pole piece 100 relatively and stably; after the pressing, the third driving unit 3 drives the pressing piece 5 to move upward to release the pressing of the cell pole piece 100, and further, the second motor 21 rotates counterclockwise by the same angle to move the pressing piece 5 to the initial position in the direction away from the cell pole piece 100. To this end, a cyclic pressing and holding action is not completed, before a sucker or a gripper stacks the next cell pole piece 100 on the diaphragm above the stacked cell pole pieces 100, the first driving unit 1 drives the lamination platform 4 to move downward by the thickness of one cell pole piece 100, so as to avoid that the next pressing and holding action is deviated in position and cannot be effectively pressed and held, so far, the cyclic pressing and holding action is completed, and a cell (not shown) with a certain thickness and a high precision requirement is finally formed by repeating the pressing and holding actions on the multiple cell pole pieces 100 for multiple times.

In one embodiment, referring to fig. 5 and 6, the pressing sheet 5 includes a first pressing sheet group and a second pressing sheet group arranged along the width direction of the lamination platform 4, the first pressing sheet group includes two first pressing sheets 51 respectively disposed on two sides of the lamination platform 4 in the length direction, and the second pressing sheet group includes two second pressing sheets 52 respectively disposed on two sides of the lamination platform 4 in the length direction. The third driving unit 3 comprises four third driving modules 30 which are respectively used for driving the four pressing sheets 5 to move up and down; the number of the second motors 21 and the number of the gears 22 are two, the rack 23 includes a first rack group and a second rack group, the first rack group includes two first racks 231, and the second rack group includes two second racks; the two first racks 231 are respectively used for being connected with the two third driving modules 30 corresponding to the two first pressing and holding pieces 51, the two second racks are respectively used for being connected with the two third driving modules 30 corresponding to the two second pressing and holding pieces 52, one of the second motors 21 is used for driving one of the gears 22 to rotate so as to drive the two first racks 231 to synchronously move towards or away from each other along the length direction, and the other second motor 21 is used for driving the other gear 22 to rotate so as to drive the two second racks to synchronously move towards or away from each other along the length direction.

It should be noted that, in the process of stacking the battery cell pole pieces 100, the positive pole pieces and the negative pole pieces are stacked alternately in sequence. In the stacking process, the two first pressing and holding pieces 51 may be used for pressing and holding a plurality of positive electrode pieces, and the two second pressing and holding pieces 52 may be used for pressing and holding a plurality of negative electrode pieces. The two first pressing sheets 51 are respectively arranged at two sides of the length direction of the lamination platform 4, and the two second pressing sheets 52 are also respectively arranged at two sides of the length direction of the lamination platform 4; in the process of pressing, it is necessary to ensure that the two first pressing pieces 51 need to keep moving synchronously, and the two second pressing pieces 52 need to keep moving synchronously.

Therefore, in order to ensure the synchronous movement of the two first pressure-holding pieces 51 and the synchronous movement of the two second pressure-holding pieces 52, two second motors 21, two gears 22, two first racks 231, and two second racks are provided. One of the second motors 21 is configured to drive one of the gears 22 to rotate so as to drive the two first racks 231 to synchronously move toward or away from each other along the length direction, so as to drive the two first pressing and holding pieces 51 to synchronously approach or leave the battery cell pole pieces 100 arranged on the lamination platform 4 in the length direction; the other second motor 21 is configured to drive the other gear 22 to rotate so as to drive the two second racks to synchronously move toward or away from each other along the length direction, so as to drive the two second pressing and holding pieces 52 to synchronously approach or leave from the battery cell pole pieces 100 arranged on the lamination platform 4 along the length direction. The mode that two racks of this kind of a motor correspondence drive move, the synchronism is good, the drive is stable and can also reduce the cost of design effectively, need not to design independent drive structure alone to single pressure piece 5.

The third driving module 30 is used for driving the corresponding pressing and holding piece 5 to move in the vertical direction. It needs to be ensured that the two third driving modules 30 corresponding to the first pressing pieces 51 need to synchronously drive the two first pressing pieces 51 to press and hold the battery cell pole piece 100; the two third driving modules 30 corresponding to the second pressing pieces 52 need to synchronously drive the two second pressing pieces 52 to press and hold the cell pole piece 100.

Alternatively, as shown in fig. 5 and 6, a first mounting plate 101 is disposed on the mounting base 10, a thickness direction of the first mounting plate 101 is parallel to the width direction, a first rack group and a second rack group are respectively disposed on two first side surfaces 1011 of the first mounting plate 101 opposite to each other in the width direction, two first racks 231 are both movably disposed on one of the first side surfaces 1011 of the first mounting plate 101 in the length direction, and the two first racks 231 are spaced in the up-down direction and at least partially overlap in projection in the up-down direction; the two second racks are both movably arranged on the other first side surface 1011 of the first mounting plate 101 along the length direction, and the two second racks are arranged at intervals along the up-down direction and at least partially overlap in projection in the up-down direction. Through setting up this first mount pad 101, the design installation of the structure of being convenient for, structural design is reasonable while also can not occupy too much usage space, compactness is good, improves this electric core lamination device's integrated level, the design of the miniaturization of being convenient for, lightweight.

Referring to fig. 5 and 6, the second driving unit 2 further includes a guide mechanism for guiding the movement of the rack 23. The guide mechanism includes a guide groove 61 provided in the mounting base 10 and extending in the longitudinal direction, and a guide rail 62 slidably provided in the guide groove 61, one end of the guide rail 62 is used for connecting the third driving unit 3, and the other end is used for connecting the rack 23. Through setting up this guide way 61 and the guide rail 62 complex guiding mechanism, can guide this rack 23 and move at length direction, also can guide to press and hold piece 5 and move at length direction, avoid at the in-process of motion, should press and hold the condition that piece 5 appears shaking at upper and lower direction, or width direction, move more steadily. However, the present disclosure is not limited to a specific structure type of the guide mechanism, and other structures capable of guiding may be selected.

Optionally, the second motor 21 may be a servo motor or a stepping motor, which has high precision, stable driving and fast response speed, and can further improve the precision and efficiency of lamination; in addition, the noise generated by the servo motor or the stepping motor is small, and the influence on the body health of workers due to the large noise generated in the working environment is avoided. However, the present disclosure is not limited to a specific type of the second motor 21, and other types of rotating electric machines may be used.

Referring to fig. 4, in one embodiment, the first driving unit 1 includes a first motor 11, a first synchronizing wheel 12, a second synchronizing wheel 13, a synchronizing belt 14, and a lead screw nut assembly 15. The first motor 11 is connected with the first synchronous wheel 12, the synchronous belt 14 is used for connecting the first synchronous wheel 12 and the second synchronous wheel 13, a lead screw 151 of the lead screw nut assembly 15 extends along the up-down direction and is rotatably arranged on the mounting base 10, the second synchronous wheel 13 is used for being connected with the lead screw 151, and a nut 152 of the lead screw nut assembly 15 is used for connecting the lamination platform 4.

In specific operation, optionally, the first motor 11 drives the first synchronous wheel 12 to rotate clockwise, and the first synchronous wheel 12 drives the lead screw 151 of the lead screw nut assembly 15 to rotate clockwise through the synchronous belt 14. It should be noted that the screw 151 is rotatably and circumferentially locked to the mounting seat 10, and when the screw 151 rotates clockwise, the nut 152 moves downward on the screw 151, and then the lamination platform 4 connected to the nut 152 moves downward. The driving is stable and the control precision is high.

Optionally, the first motor 11 may also be configured as a servo motor or a stepping motor, which has high precision, stable driving and fast response speed, and can ensure stability and precision control during the downward movement of the lamination platform 4.

Alternatively, the above-mentioned screw nut assembly 15 may be configured as a ball screw having features of high transmission precision, stable transmission and high efficiency.

In addition, referring to fig. 4, the first driving unit 1 further includes a supporting plate 16 and a plurality of supporting rods 17, the second mounting plate 102 extending along the horizontal direction is formed on the mounting base 10, a plurality of mounting holes (not shown) are formed on the second mounting plate 102, the supporting rods 17 extend along the vertical direction and are movably inserted in the mounting holes along the vertical direction, an end portion of the supporting rod 17 located above the second mounting plate 102 is used for being connected with the lamination platform 4, an end portion of the supporting rod 17 located below the second mounting plate 102 is used for being connected with the supporting plate 16, a screw rod 151 is rotatably disposed on the second mounting plate 102, and a nut 152 is used for being connected with the supporting plate 16.

In this embodiment, the support rod 17 is movably inserted through the mounting hole of the second mounting plate 102 extending in the horizontal direction in the up-down direction, and the end of the support rod 17 above the second mounting plate 102 is used for connecting with the lamination platform 4, the end of the support rod 17 below the second mounting plate 102 is used for connecting with the support plate 16, and the nut 152 is connected to the support plate 16. During operation, the nut 152 moves downward on the screw 151, and thus the support plate 16 moves downward, and the support plate 16 drives the lamination platform 4 to move downward through the support rod 17. Through designing this backup pad 16 and bracing piece 17, at the in-process that lamination platform 4 was driven the downstream, this backup pad and bracing piece 17 can play good guide effect, avoid the in-process of downstream to take place the condition of rocking under lamination platform 4, make this lamination platform 4 move more steadily.

Referring to fig. 1, 2 and 4, a linear bearing 200 may be disposed in the mounting hole, and the support rod 200 may be movably inserted into the linear bearing 200. The friction between the support rod 200 and the mounting hole can be reduced by providing the linear bearing 200, thereby obtaining a smooth motion with high accuracy.

In addition, the plurality of support bars 17 may be evenly spaced along the length of the lamination platform 4 to provide a stable support for the lamination platform 4.

Alternatively, the laminated platform 4 may include a main supporting plate 41 and two end supporting plates 42 independent from each other, the two end supporting plates 42 are respectively located at two ends of the main supporting plate 41 along the length direction, one part of the plurality of supporting rods 17 is used for connecting the main supporting plate 41, and the other part is used for connecting the end supporting plates 42.

In addition, the second motor 21 described above may be mounted on the second mounting plate 102 via a motor mounting bracket 211 to drive the rack 23 provided on the first mounting plate 101.

In this embodiment, by designing the integrated lamination platform 4 as three parts, namely the main support plate 41 and the two end support plates 42, an operator can change the length dimension of the integrated lamination platform 4 by quickly changing the end support plates 42 with different length dimensions, so as to expand the compatible dimension of the lamination platform 4, and thus, the battery pole pieces 100 with different dimensions can be supported. Compare in prior art when dealing with not unidimensional electric core pole piece 100, carry out the scheme redesigned to the overall dimension of lamination platform 4, the designer only need carry out not unidimensional design both can satisfy not unidimensional electric core pole piece 100's support demand to this disclosed tip layer board 42, reduces the cost of design, manufacturing effectively.

Alternatively, as shown in fig. 7 and 8, the third driving unit 3 includes a cylinder block 31, a cylinder 32, a rotating arm 33, and a connecting arm 34. Cylinder block 31 is used for being connected with rack 23, cylinder 32 sets up in cylinder block 31 and the cylinder pole 321 of this cylinder 32 extends along upper and lower direction, rotor arm 33 passes through connecting block 35 and connects the pressure and hold piece 5, the first end of rotor arm 33 articulates in cylinder block 31 through the first pivot 331 that extends along the width direction of lamination platform 4, the second end of rotor arm 33 is articulated through the first end of second pivot 332 and linking arm 34 that extends along the width direction, the second end of linking arm 34 is articulated through third pivot 341 and the cylinder pole 321 that extends along the width direction.

In this embodiment, by converting the up-and-down reciprocating motion of the cylinder rod 321 into the reciprocating rotation of the rotating arm 33 around the first rotating shaft 331 extending in the width direction within a certain angle range, during the rotation of the rotating arm 33, the pressing and holding piece 5 connected to the rotating arm 33 generates two-directional motion, and on the one hand, generates the up-and-down motion to press and hold or release the cell pole piece 100 on the lamination platform 4; on the other hand, the movement along the length direction is generated to be close to or far away from the cell pole piece 100 on the lamination platform 4 in the length direction, so that the problem that the cell pole piece 100 cannot be placed on the pressing and holding piece 5 only under the condition of moving in the up-and-down direction is avoided.

Optionally, the cylinder 32 further includes a U-shaped bracket 323 disposed at an end of the cylinder rod 321 away from the cylinder 322, the U-shaped bracket 323 includes a middle plate 3231 and end plates 3232 disposed at two ends of the middle plate 3231, the middle plate 3231 is used for connecting with the cylinder rod 321, the third rotating shaft 341 is rotatably mounted on the two end plates 3232, and the U-shaped bracket 323 is disposed to facilitate the connecting arm 34 to be hinged with the cylinder rod 321, so that the structure is simple and the manufacturing cost is low.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The battery cell lamination device is characterized by comprising a mounting seat (10), a first driving unit (1), a second driving unit (2), a third driving unit (3), a lamination platform (4) and a pressing piece (5), wherein the first driving unit, the second driving unit and the third driving unit are arranged on the mounting seat (10), the lamination platform is used for placing a battery cell pole piece (100), and the pressing piece is used for pressing and holding the battery cell pole piece (100); the first driving unit (1) is used for being connected with the lamination platform (4) to drive the lamination platform (4) to move along the up-down direction, the second driving unit (2) is connected with the third driving unit (3), the third driving unit (3) is connected with the pressing and holding piece (5), the second driving unit (2) is used for driving the third driving unit (3) and the pressing and holding piece (5) to move along the length direction of the lamination platform (4) so as to be close to or far away from the battery cell pole piece (100) placed on the lamination platform (4), and the third driving unit (3) is used for driving the pressing and holding piece (5) to move along the up-down direction; the second driving unit (2) comprises a second motor (21), a gear (22) and a rack (23), the rack (23) is used for being connected with the third driving unit (3), the second motor (21) is used for driving the gear (22) to rotate, and the rack (23) meshed with the gear (22) is driven to drive the third driving unit (3) and the pressing and holding piece (5) to move along the length direction.

2. The cell lamination device according to claim 1, wherein the pressing and holding pieces (5) include a first pressing and holding piece group and a second pressing and holding piece group arranged along a width direction of the lamination platform (4), the first pressing and holding piece group includes two first pressing and holding pieces (51) respectively arranged on two sides of the lamination platform (4) in a length direction, the second pressing and holding piece group includes two second pressing and holding pieces (52) respectively arranged on two sides of the lamination platform (4) in the length direction, and the third driving unit (3) includes four third driving modules (30) respectively used for driving four pressing and holding pieces (5) to move up and down; the number of the second motors (21) and the number of the gears (22) are two, the rack (23) comprises a first rack set and a second rack set, the first rack set comprises two first racks (231), and the second rack set comprises two second racks; the two first racks (231) are respectively used for being connected with the two third driving modules (30) corresponding to the two first pressing and holding pieces (51), the two second racks are respectively used for being connected with the two third driving modules (30) corresponding to the two second pressing and holding pieces (52), one of the second motors (21) is used for driving one of the gears (22) to rotate so as to drive the two first racks (231) to synchronously move in the opposite direction or in the opposite direction along the length direction, and the other second motor (21) is used for driving the other gear (22) to rotate so as to drive the two second racks to synchronously move in the opposite direction or in the opposite direction along the length direction.

3. The cell lamination device according to claim 2, wherein a first mounting plate (101) is disposed on the mounting seat (10), a thickness direction of the first mounting plate (101) is parallel to the width direction, the first rack group and the second rack group are respectively disposed on two first side surfaces (1011) of the first mounting plate (101) opposite to each other in the width direction, two first racks (231) are movably disposed on one first side surface (1011) of the first mounting plate (101) in the length direction, and the two first racks (231) are spaced in the up-down direction and at least partially overlap in projection in the up-down direction; the two second racks are movably arranged on the other first side surface (1011) of the first mounting plate (101) along the length direction, and are arranged at intervals along the vertical direction and at least partially overlap in projection in the vertical direction.

4. The cell lamination device according to claim 1, wherein the second drive unit (2) further comprises a guide mechanism for guiding the movement of the rack (23);

the guide mechanism comprises a guide groove (61) which is arranged on the mounting seat (10) and extends along the length direction, and a guide rail (62) which is slidably arranged in the guide groove (61), wherein one end of the guide rail (62) is used for connecting the third driving unit (3), and the other end of the guide rail is used for connecting the rack (23).

5. The cell lamination device according to any one of claims 1 to 4, wherein the second motor (21) is a servo motor or a stepper motor.

6. The cell lamination device according to claim 1, wherein the first driving unit (1) includes a first motor (11), a first synchronous wheel (12), a second synchronous wheel (13), a synchronous belt (14), and a screw nut assembly (15), the first motor (11) is connected to the first synchronous wheel (12), the synchronous belt (14) is used for connecting the first synchronous wheel (12) and the second synchronous wheel (13), a screw (151) of the screw nut assembly (15) extends in an up-down direction and is rotatably disposed on the mounting seat (10), the second synchronous wheel (13) is used for connecting to the screw (151), and a nut (152) of the screw nut assembly (15) is used for connecting to the lamination platform (4).

7. The cell lamination device according to claim 6, wherein the first drive unit (1) further comprises a support plate (16) and a plurality of support rods (17), a second mounting plate (102) extending along the horizontal direction is formed on the mounting seat (10), a plurality of mounting holes are formed on the second mounting plate (102), the support rod (17) extends along the vertical direction and movably penetrates through the mounting holes along the vertical direction, the end of the support bar (17) above the second mounting plate (102) is used for connecting with the lamination platform (4), the end of the support rod (17) below the second mounting plate (102) is used for connecting with the support plate (16), the screw rod (151) is rotatably arranged on the second mounting plate (102), and the nut (152) is used for connecting the support plate (16).

8. The cell lamination device according to claim 7, wherein the lamination platform (4) comprises a main support plate (41) and two end support plates (42) independent from each other, the two end support plates (42) are respectively located at two ends of the main support plate (41) along the length direction, and one part of the support rods (17) is used for connecting the main support plate (41) and the other part is used for connecting the end support plates (42).

9. The cell lamination device according to claim 1, wherein the third driving unit (3) comprises a cylinder block (31), a cylinder (32), a rotating arm (33) and a connecting arm (34), the cylinder block (31) is used for being connected with the rack (23), the cylinder (32) is arranged on the cylinder block (31) and a cylinder rod (321) of the cylinder (32) extends in the up-and-down direction, and the rotating arm (33) is connected with the pressure-holding piece (5);

the first end of the rotating arm (33) is hinged to the cylinder seat (31) through a first rotating shaft (331) extending along the width direction of the lamination platform (4), the second end of the rotating arm (33) is hinged to the first end of the connecting arm (34) through a second rotating shaft (332) extending along the width direction, and the second end of the connecting arm (34) is hinged to the cylinder rod (321) through a third rotating shaft (341) extending along the width direction.

10. The cell lamination device according to claim 9, wherein the cylinder (32) further comprises a U-shaped bracket (323) disposed at an end of the cylinder rod (321) away from the cylinder block (322), the U-shaped bracket (323) comprises a middle plate (3231), and end plates (3232) disposed at two ends of the middle plate (3231), the middle plate (3231) is used for connecting with the cylinder rod (321), and the third rotating shaft (341) is rotatably mounted on the two end plates (3232).