Battery cell shaping device and winding machine

Abstract

A battery cell shaping device (100) and a winding machine. The battery cell shaping device (100) comprises: a support (10); a first press plate (20), the first press plate (20) being connected to the support (10); and a second press plate (30), the second press plate (30) being movably arranged on the support (10) in a first direction, and the second press plate (30) and the first press plate (20) being spaced apart from each other in the first direction to form an accommodating space (31) for accommodating a battery cell (200). By providing on the support (10) the first press plate (20) and the second press plate (30) which are spaced apart from each other, and moving the second press plate (30) close to the first press plate (20) in the first direction, the battery cell shaping device (100) shapes the battery cell (200), and has the advantage of simple and compact structure. Both the first press plate (20) and the second press plate (30) are connected to the support (10), so that a reaction force can be dispersed by means of the support (10) during the shaping of the battery cell (200), thereby helping to improve the strength and reliability of the battery cell shaping device (100).

Description

Battery cell shaping device and winding machine

[0001] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on February 20, 2024, with application number 202420318928.3 and application name “Battery Cell Shaping Device and Winding Machine,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure belongs to the technical field of battery manufacturing, and in particular relates to a battery cell shaping device and a winding machine including the battery cell shaping device. Background Art

[0003] During the battery cell production process, after winding, the cells need to be shaped through cold pressing. As the cells become thicker, the pressure required to shape them increases. Existing cell shaping devices typically use upper and lower pressure plates to shape and press the cells. Due to the interaction of forces, the greater the pressure applied to the cell, the greater the reaction force on the cell shaping device. However, the strength of existing cell shaping devices is insufficient to meet the pressure requirements required for cell shaping. Summary of the Invention

[0004] Based on the above problems, the purpose of the embodiments of the present disclosure is to provide a new technical solution for a battery cell shaping device, which can at least solve the problem of insufficient strength of the battery cell shaping device in the prior art.

[0005] Another object of the embodiments of the present disclosure is to provide a winding machine comprising the above-mentioned battery cell shaping device.

[0006] According to a first aspect of an embodiment of the present disclosure, a battery cell shaping device is provided, comprising: a support; a first pressure plate, the first pressure plate being connected to the support; a second pressure plate, the second pressure plate being movably arranged on the support along a first direction, the second pressure plate being spaced apart from the first pressure plate in the first direction to form an accommodating space suitable for accommodating the battery cell.

[0007] Optionally, the support includes a bottom plate, a top plate and two side plates, the bottom plate and the top plate are spaced apart in the first direction, the two side plates are spaced apart in the second direction, the second direction intersects with the first direction, each side plate is respectively connected to the bottom plate and the top plate, the bottom plate, the top plate and the two side plates define an installation space, and the first pressure plate and the second pressure plate are accommodated in the installation space.

[0008] Optionally, a hollow portion is provided on the side plate, and the hollow portion passes through the side plate along the thickness direction of the side plate.

[0009] Optionally, the battery cell shaping device further includes: a driving component, the driving component is disposed on the support, and the driving component is connected to the first pressing plate to drive the first pressing plate to move along the first direction.

[0010] Optionally, the drive assembly includes: a first screw, which extends along the first direction and is threadedly connected to the first pressure plate, and the first screw can rotate around its own axis to drive the first pressure plate to move along the first direction; a first driving member, which is connected to the first screw to drive the first screw.

[0011] Optionally, the driving assembly includes a cylinder having a movable end movable along the first direction, and the movable end is connected to the first pressing plate.

[0012] Optionally, the battery cell shaping device further includes: a first guide member, the first guide member is provided on the side plate and extends along the first direction, and the first pressing plate is movable along the first guide member.

[0013] Optionally, the first guide member includes a guide rail.

[0014] Optionally, a plurality of first guide members are provided on a side surface of each side plate facing the first pressure plate.

[0015] Optionally, the support also includes a support plate, which connects the two side plates, and the support plate is located between the bottom plate and the top plate. A locking portion is provided on the first pressure plate, and the battery cell shaping device also includes: a limit member, which is provided on the support plate, and the limit member is movable between a locking position and an unlocking position to cooperate with the locking portion to lock or unlock the first pressure plate; a second driving member, which is provided on the support plate, and the second driving member is connected to the limit member to drive the limit member.

[0016] Optionally, the support includes two support plates, the two support plates are spaced apart in the third direction, the first direction, the second direction and the third direction are perpendicular to each other, and each support plate is provided with the limiting member and the second driving member.

[0017] Optionally, the locking portion is a limiting hole, the limiting member is a guide rod, the guide rod extends along the third direction, the second driving member drives the guide rod to be movable along the third direction, when the limiting member is in the locking position, a portion of the guide rod extends into the limiting hole to lock the first pressure plate, and when the limiting member is in the unlocking position, the guide rod is separated from the limiting hole.

[0018] Optionally, the support plate is provided with a mounting hole penetrating along the thickness direction of the support plate, and the battery cell shaping device further includes: a guide seat, the guide seat is detachably provided in the mounting hole, a guide hole is provided on the guide seat, the guide rod is movably provided in the guide hole along the guide hole, and the second driving member is provided on the guide seat; at least one pad, the pad is detachably provided in the mounting hole and is stacked with the guide seat in the first direction.

[0019] Optionally, the battery cell shaping device further includes: a second guide member, which is provided on the bottom plate and extends along the first direction, and the second guide member is used to guide the second pressing plate to move in the first direction.

[0020] Optionally, the battery cell shaping device also includes: a movable block, which is located in the installation space, and the movable block has a first inclined surface, an angle is formed between the plane where the first inclined surface is located and the plane where the second direction is located, and the second pressure plate has a second inclined surface that abuts against the first inclined surface, and the movable block can move along the second direction to drive the second pressure plate to move along the first direction.

[0021] Optionally, the battery cell shaping device also includes: a second lead screw, which extends along the second direction and is threadedly connected to the movable block, and the second lead screw is rotatably connected to the side plate around its own axis to drive the movable block to move along the second direction; a third driving member, the third driving rod is provided on the side plate, and the third driving member is connected to the second lead screw to drive the second lead screw.

[0022] Optionally, a first rolling element is provided on at least one of the base plate, the movable block, the first inclined surface and the second inclined surface, and rolling friction is formed between the movable block and the support, and / or rolling friction is formed between the first inclined surface and the second inclined surface.

[0023] Optionally, the first rolling element is a plane needle roller bearing, and the plane needle roller bearing is provided on at least one of the first inclined surface and the second inclined surface.

[0024] Optionally, a groove extending along the second direction is provided on the surface of the movable block, and a plurality of second rolling elements are provided on the support, and the plurality of second rolling elements are arranged at intervals along the second direction, and rolling friction is formed between the plurality of second rolling elements and the bottom surface of the groove.

[0025] Optionally, the second pressing plate has a bearing surface on the side facing the first pressing plate, and the battery cell shaping device further includes: a connecting block, which is arranged on the bearing surface; a conveying component, which is connected to the connecting block, and at least a portion of the conveying component is located between the first pressing plate and the second pressing plate to convey the battery cell.

[0026] According to a second aspect of an embodiment of the present disclosure, a winding machine is provided, comprising the battery cell shaping device described in any one of the above embodiments.

[0027] One technical effect of the embodiment of the present disclosure is that the first pressure plate and the second pressure plate can be spaced apart on the support, and the second pressure plate can be used to approach the first pressure plate along the first direction to achieve the shaping of the battery cell, so that the structure is simple and compact; by connecting both the first pressure plate and the second pressure plate to the support, the reaction force during the shaping of the battery cell is dispersed through the support, which is beneficial to improving the strength and reliability of the battery cell shaping device.

[0028] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] FIG1 is a perspective view of a cell shaping device in an embodiment of the present disclosure;

[0031] FIG2 is a side view of a cell shaping device in an embodiment of the present disclosure;

[0032] FIG3 is a schematic diagram of a partial structure of a cell shaping device in an embodiment of the present disclosure;

[0033] FIG4 is a perspective view of a support plate and a limiting assembly in a battery cell shaping device according to an embodiment of the present disclosure;

[0034] FIG5 is a second perspective view of the support plate and the limiting assembly in the battery cell shaping device according to an embodiment of the present disclosure;

[0035] FIG6 is a perspective view of the second pressing plate and its surrounding structures in the battery cell shaping device according to an embodiment of the present disclosure;

[0036] FIG7 is a perspective view of a movable block and its surrounding structures in a cell shaping device according to an embodiment of the present disclosure;

[0037] FIG8 is a schematic diagram of the cooperation between the second pressing plate and the movable block in the battery cell shaping device in an embodiment of the present disclosure.

[0038] Explanation of the accompanying drawings: battery cell shaping device 100; support 10; bottom plate 11; top plate 12; side plate 13; hollow portion 131; support plate 14; mounting hole 141; mounting space 15; first pressure plate 20; first guide member 21; locking portion 22; connecting plate 23; insulating pressure plate 24; second pressure plate 30; accommodating space 31; second guide member 32; second inclined surface 33; driving assembly 40; first lead screw 41; first driving member 42; limiting member 61; second driving member 62; guide seat 63; guide hole 631; pad 64; movable block 70; first inclined surface 71; groove 72; first rolling member 73; second rolling member 74; second lead screw 81; third driving member 82; connecting block 91; conveying assembly 92; battery cell 200. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0041] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] The following first describes in detail the battery cell shaping device 100 according to an embodiment of the present disclosure with reference to the accompanying drawings.

[0045] As shown in FIG. 1 to FIG. 8 , according to an embodiment of the present disclosure, a cell shaping device 100 is provided, including: a support 10 , a first pressing plate 20 and a second pressing plate 30 .

[0046] Specifically, the first pressing plate 20 is connected to the support 10. The second pressing plate 30 is movably disposed on the support 10 along a first direction. The second pressing plate 30 is spaced apart from the first pressing plate 20 in the first direction to form an accommodating space 31 suitable for accommodating the battery cell 200.

[0047] In other words, the cell shaping device 100 according to the embodiment of the present disclosure is mainly composed of a support 10, a first pressing plate 20, and a second pressing plate 30. The cell shaping device 100 can shape the cell 200 and flatten the wound round cell 200.

[0048] A first pressing plate 20 and a second pressing plate 30 can be connected to the support 10. In the first direction, the first pressing plate 20 and the second pressing plate 30 can be spaced apart to form a receiving space 31, and the battery cell 200 can be received in the receiving space 31. The second pressing plate 30 can also be movable in the first direction. Thus, by driving the second pressing plate 30, the battery cell 200 in the receiving space 31 can be shaped.

[0049] Therefore, according to the battery cell shaping device 100 of the embodiment of the present disclosure, the first pressure plate 20 and the second pressure plate 30 are arranged at intervals on the support 10, and the second pressure plate 30 is used to approach the first pressure plate 20 along the first direction to achieve the shaping of the battery cell, which has the advantage of simple and compact structure. The first pressure plate 20 and the second pressure plate 30 are both connected to the support 10, so that the reaction force during the shaping of the battery cell can be dispersed through the support 10, which is beneficial to improving the strength and reliability of the battery cell shaping device 100.

[0050] In some specific embodiments of the present disclosure, the support 10 includes a bottom plate 11, a top plate 12 and two side plates 13, the bottom plate 11 and the top plate 12 are spaced apart in a first direction, the two side plates 13 are spaced apart in a second direction, the second direction intersects with the first direction, each side plate 13 connects the bottom plate 11 and the top plate 12 respectively, the bottom plate 11, the top plate 12 and the two side plates 13 define an installation space 15, and the first pressure plate 20 and the second pressure plate 30 are accommodated in the installation space 15.

[0051] In other words, the support 10 can be mainly composed of a bottom plate 11, a top plate 12 and two side plates 13. In the first direction, the bottom plate 11 and the top plate 12 can be spaced apart. In the second direction, the two side plates 13 can be spaced apart. Each side plate 13 can connect the bottom plate 11 and the top plate 12. Thus, the bottom plate 11, the top plate 12 and the two side plates 13 can enclose and define an installation space 15. The first direction and the second direction can intersect. The first pressing plate 20 and the second pressing plate 30 are both installed in the installation space 15.

[0052] Since the shaping mechanism of the battery cell 200 is subjected to a large reaction force during the shaping process of the battery cell 200, connecting the bottom plate 11 and the top plate 12 through the two side plates 13 is beneficial to enhancing the strength of the support 10, thereby enhancing the strength and stability of the battery cell shaping device 100, and avoiding the instability of the structure connected to the support 10 and affecting the shaping quality.

[0053] Optionally, the first direction may be a vertical direction, the second direction may be a horizontal direction, the top plate 12 may be located on the top side of the bottom plate 11 , and both ends of the side plates 13 in the vertical direction may be connected to the top plate 12 and the bottom plate 11 respectively.

[0054] The first pressure plate 20 or the second pressure plate 30 can be connected to one or more of the bottom plate 11, the top plate 12 and the side plates 13, which is not limited here. Since the bottom plate 11, the top plate 12 and the two side plates 13 are connected, the reaction force received by the first pressure plate 20 and the second pressure plate 30 during the shaping process can be transmitted to the side plates 13, and the side plates 13 are used to improve the load-bearing capacity of the support 10.

[0055] In this embodiment, the top plate 12 and the bottom plate 11 of the support 10 are connected by two side plates 13, and the two side plates 13, the top plate 12, and the bottom plate 11 together define an installation space 15. The first pressure plate 20 and the second pressure plate 30 are placed in the installation space 15, and the paired side plates 13 are used to share the load when the battery cell 200 is shaped. Compared with the prior art in which the top plate 12 and the bottom plate 11 are connected by connecting columns, this is beneficial to improving the strength of the support 10.

[0056] In addition, the provision of the side panel 13 also facilitates the installation of other structures on the battery cell shaping device 100. For example, the power structure or some guide structures that drive the movement of the second pressure plate 30 can be directly connected to the side panel 13 without the need for other auxiliary support structures, which is beneficial to reducing the number of parts of the battery cell shaping device 100, simplifying the structure of the battery cell shaping device 100, and reducing the size of the battery cell shaping device 100.

[0057] In some specific embodiments, the second pressing plate 30 can be located at the bottom of the first pressing plate 20. During the shaping process of the battery cell 200, the second pressing plate 30 can move upward close to the first pressing plate 20, so that the battery cell 200 abuts against the first pressing plate 20, and then the second pressing plate 30 continues to move upward to complete the shaping of the battery cell 200. The position of the first pressing plate 20 can be fixed during the shaping process. This structure is more stable when pressing the battery cell 200.

[0058] In some optional embodiments, the first pressure plate 20 can be connected to the top plate 12, and the second pressure plate 30 can be connected to the bottom plate 11. The connection here can be a direct connection or an indirect connection, which is not limited here. The reaction force received by the first pressure plate 20 can first act on the top plate 12, and the reaction force received by the second pressure plate 30 can first act on the bottom plate 11. Since the side plate 13 is connected between the bottom plate 11 and the top plate 12, the side plate 13 has higher strength and tensile strength than ordinary connecting columns, thereby making the support 10 have higher strength and stability.

[0059] According to one embodiment of the present disclosure, a hollow portion 131 is provided on the side panel 13, and the hollow portion 131 penetrates the side panel 13 along the thickness direction of the side panel 13. This not only reduces the weight of the side panel 13 itself and reduces the production cost of the side panel 13, but also can utilize the hollowing to form a visual window, which facilitates the monitoring of the shaping process of the battery cell 200.

[0060] According to some other embodiments of the present disclosure, the battery cell shaping device 100 further includes a driving assembly 40 , which is disposed on the support 10 and connected to the first pressing plate 20 to drive the first pressing plate 20 to move along the first direction.

[0061] Specifically, the top plate 12 may be provided with a driving assembly 40, which may be connected to the support 10 and may drive the first pressing plate 20 to move closer to or away from the second pressing plate 30 along a first direction. Optionally, the driving member 40 may be connected to the top plate 12.

[0062] During the shaping process of the battery cell 200, the battery cell 200 can be carried on the second pressure plate 30. The driving component 40 can first drive the first pressure plate 20 to descend to the set position and make the first pressure plate 20 stay at the set position. Then the second pressure plate 30 moves up with the battery cell 200, so that the upper surface of the battery cell 200 and the lower surface of the first pressure plate 20 are at low pressure, so as to change the shape of the battery cell 200 and complete the shaping of the battery cell 200.

[0063] In this embodiment, the first pressure plate 20 is configured to be movable along a first direction under the drive of the driving assembly 40, and the position of the first pressure plate 20 can be changed, thereby changing the height of the accommodating space 31, thereby adapting to the shaping requirements of battery cells 200 of different sizes, which is conducive to improving the applicability of the battery cell shaping device 100.

[0064] In some embodiments of the present disclosure, the drive assembly 40 includes a first screw 41 and a first driving member 42. The first screw 41 extends in a first direction and is threadedly connected to the first pressure plate 20. The first screw 41 is rotatable about its own axis to drive the first pressure plate 20 to move in the first direction. The first driving member 42 is connected to the first screw 41 to drive the first screw 41, which has the advantages of simple structure and easy control.

[0065] Specifically, the drive assembly 40 can be mainly composed of a first screw 41 and a first drive member 42. The axis of the first screw 41 can extend along the first direction, and the first pressure plate 20 can be screwed to the first screw 41. Thus, when the first screw 41 rotates around its own axis, the first pressure plate 20 can move in the first direction.

[0066] One end of the first screw 41 can be rotatably connected to the top plate 12, the first driving member 42 can be connected to the top plate 12, and the conveying end of the first driving member 42 can be connected to the first screw 41 and drive the first screw 41 to rotate. The connection can be a direct connection or an indirect connection, which is not limited here.

[0067] Optionally, the first driving member 42 may be a motor, and power may be transmitted between the motor and the first lead screw 41 via a belt rotation.

[0068] According to some optional embodiments of the present disclosure, the drive assembly 40 includes a cylinder having a movable end movable along a first direction, and the movable end is connected to the first pressure plate 20. The connection can be a direct connection or an indirect connection, which is not limited here.

[0069] The movable end of the cylinder directly drives the first pressure plate 20 to move in the first direction. Compared with the first pressure plate 20 driven by a lead screw and nut, during the shaping process of the battery cell 200, the second pressure plate 30 approaches the first pressure plate 20. When the first pressure plate 20 is subjected to a reaction force, it drives the lead screw to rotate. At this time, the motor driving the lead screw does not rotate, eventually causing the lead screw to wear and shortening the service life of the drive assembly 40. The cylinder-driven first pressure plate 20 has a longer service life and a simpler structure.

[0070] According to some other embodiments of the present disclosure, the battery cell shaping device 100 further includes a first guide member 21 . The first guide member 21 is provided on the side plate 13 and extends along the first direction. The first pressing plate 20 is movable along the first guide member 21 .

[0071] Specifically, the first guide member 21 can be mounted directly or indirectly on the side plate 13. The side plate 13 can serve as a carrier for the first guide member 21. This eliminates the need for auxiliary structures for mounting the first guide member 21, facilitating installation and commissioning of the first guide member 21. Furthermore, the placement of the first guide member 21 on the side plate 13 provides greater stability. Furthermore, this makes the structure of the cell shaping device 100 more compact, thereby reducing the overall size of the cell shaping device 100.

[0072] In some specific embodiments of the present disclosure, the first guide member 21 includes a guide rail, which can be conveniently installed directly on the side panel 13, facilitating installation and commissioning of the guide rail. The first pressure plate 20 can be provided with a guide block, and the guide rail can be embedded in the guide block and guide the guide block to move along the first direction.

[0073] Optionally, the guide rail may be integrally formed on a side surface of the side plate 13 facing the installation space 15 , thereby reducing the number of parts of the battery cell shaping device 100 .

[0074] According to some optional embodiments of the present disclosure, a plurality of first guide members 21 are provided on a side surface of each side plate 13 facing the first pressing plate 20. Providing multiple guide members on each side plate 13 helps improve the stability of the first pressing plate 20 and prevents the first pressing plate 20 from deflecting or shaking, which could affect the shaping quality of the battery cells 200.

[0075] For example, two guide rails can be provided on each side panel 13, and the two guide rails on the same side panel 13 can be spaced apart in the horizontal direction. Thus, the four guide rails can be connected to form a quadrilateral when viewed from above. The first pressure plate 20 is connected to the four guide rails, and the four guide rails are used to simultaneously guide the first pressure plate 20 to move along the first direction, which is beneficial to improving the stability of the first pressure plate 20.

[0076] According to other embodiments of the present disclosure, the support 10 further includes a support plate 14, which connects the two side plates 13 and is located between the bottom plate 11 and the top plate 12. The first pressure plate 20 is provided with a locking portion 22. The battery cell shaping device 100 further includes a limiter 61 and a second drive member 62. The limiter 61 is provided on the support plate 14 and is movable between a locked position and an unlocked position to cooperate with the locking portion 22 to lock or unlock the first pressure plate 20. The second drive member 62 is provided on the support plate 14 and is connected to the limiter 61 to drive the limiter 61.

[0077] Specifically, a support plate 14 may be connected between the two side plates 13. Therefore, providing the side plates 13 on the support 10 may also facilitate the installation of the support plate 14. In the first direction, the support plate 14 may be located between the bottom plate 11 and the top plate 12. For example, the support plate 14 may be lower than the top plate 12 and higher than the bottom plate 11.

[0078] The support plate 14 may be provided with a stopper 61 and a second drive member 62, and the first pressure plate 20 may be provided with a locking portion 22. The stopper 61 is movably connected to the support plate 14, and the second drive member 62 may be connected to the stopper 61 and drive the stopper 61 between a locked position and an unlocked position. The movement of the stopper 61 may include, but is not limited to, linear motion and curved motion, which are not limited herein.

[0079] Optionally, the second driving member 62 may be provided on a side of the support plate 14 away from the first pressing plate 20 , that is, the second driving member 62 may be located outside the installation space 15 .

[0080] The structure of the locking portion 22 can be set according to the structure of the limiting member 61. For example, when the limiting member 61 is a circular protrusion, the locking portion 22 can be a circular groove 72. When the limiting member 61 is a square groove 72, the locking portion 22 can be a square protrusion.

[0081] When the first pressure plate 20 descends to the predetermined position, the limit member 61 can move from the unlocked position to the locked position, and cooperate with the locking portion 22 to lock the first pressure plate 20, thereby limiting the first pressure plate 20 to the predetermined position, preventing the first pressure plate 20 from retreating during the shaping process of the battery cell 200 and affecting the shaping quality of the battery cell 200.

[0082] When the first pressing plate 20 needs to be unlocked, the limiting member 61 can move from the locking position to the unlocking position, so that the first pressing plate 20 can move freely along the first direction.

[0083] In this embodiment, a limit member 61 and a second driving member 62 are provided on the support plate 14, and a locking portion 22 is provided on the first pressure plate 20, which is beneficial to reducing the structure installed on the first pressure plate 20 and integrating the complex structure on the support 10, so that the structure of the battery cell shaping device 100 can be made more compact and the volume of the battery cell shaping device 100 can be reduced.

[0084] In addition, the limit member 61 cooperates with the locking portion 22 to lock and unlock the first pressure plate 20. On the one hand, it can locate the position of the first pressure plate 20 and limit the first pressure plate 20 in the first direction. On the other hand, it can protect the drive assembly 40. Since the output force of the second pressure plate 30 on the shaping of the battery cell 200 is very large, when the drive assembly 40 is driven by a screw nut, the limit member 61 and the locking portion 22 can fix the first pressure plate 20 in a predetermined position to prevent the first pressure plate 20 from moving during the shaping process of the battery cell 200 and damaging the screw in the screw nut.

[0085] In some specific embodiments of the present disclosure, the support 10 includes two support plates 14, which are spaced apart in the third direction. The first direction, the second direction and the third direction are perpendicular to each other, and each support plate 14 is provided with a limit member 61 and a second driving member 62.

[0086] Specifically, in the third direction, the two support plates 14 can be spaced apart, the first pressure plate 20 and the second pressure plate 30 can be located between the two support plates 14, and the top plate 12, the bottom plate 11, the two side plates 13 and the two support plates 14 can be combined to form a square box-like structure to define the installation space 15.

[0087] Alternatively, the third direction may be a horizontal direction perpendicular to the second direction. The side panels 13 and the support panels 14 may extend in vertical directions, respectively, and the top panel 12 and the bottom panel 11 may extend in horizontal directions. The angle between the side panels 13 and the support panels 14 may be 90°.

[0088] In addition, each support plate 14 may be provided with at least one limiting member 61 and at least one second driving member 62. Thus, the limiting members 61 on the two support plates 14 can limit the first pressing plate 20 from both ends in the third direction, thereby making the force applied to the first pressing plate 20 more uniform and preventing the first pressing plate 20 from being unstable due to unilateral force.

[0089] It should be noted that the number of the limiting members 61 may be the same as or greater than the number of the second driving members 62 . For example, a single second driving member 62 may simultaneously drive multiple limiting members 61 through a transmission structure.

[0090] According to some optional embodiments of the present disclosure, the locking portion 22 is a limiting hole, the limiting member 61 is a guide rod, the guide rod extends along a third direction, and the second driving member 62 drives the guide rod to be movable along the third direction. When the limiting member 61 is in the locking position, a portion of the guide rod extends into the limiting hole to lock the first pressure plate 20. When the limiting member 61 is in the unlocking position, the guide rod is separated from the limiting hole.

[0091] Specifically, the first pressing plate 20 may have a limiting hole at the end in the third direction, the limiting hole may extend along the third direction, the guide rod may extend along the third direction and may move along the third direction, and may extend into or exit the limiting hole.

[0092] After the first pressing plate 20 descends to the predetermined position, the second driving member 62 can drive the guide rod to approach the first pressing plate 20 along the third direction and allow the guide rod to extend into the limiting hole to complete the limiting of the first pressing plate 20.

[0093] When the first pressing plate 20 needs to be unlocked, the second driving member 62 can drive the guide rod to move away from the first pressing plate 20 along the third direction, so that the guide rod exits the limiting hole to release the limiting of the first pressing plate 20 .

[0094] Optionally, the second driving member 62 may be a limiting cylinder, a telescopic rod of the limiting cylinder being movable along the third direction, and the telescopic rod being connected to the guide rod and driving the guide rod.

[0095] In this embodiment, the structure of the guide rod and the limiting hole is simple. The connection structure formed after the guide rod extends into the limiting hole has good strength, can bear the reaction force during the shaping of the battery cell 200, and effectively prevent the first pressure plate 20 from moving in the first direction.

[0096] It should be noted that there may be a gap when the guide rod is connected to the guide hole 631. During the shaping process of the battery cell 200, if a screw nut is used to drive the first pressure plate 20, when the second pressure plate 30 moves upward to press the battery cell 200, due to the existence of the gap, the first pressure plate 20 will drive the screw to rotate. At this time, the motor driving the screw does not rotate, which may cause damage to the screw. When the drive component 40 uses a cylinder to drive the first pressure plate 20, no damage will occur, which is beneficial to improving the life of the drive component 40.

[0097] According to other embodiments of the present disclosure, the support plate 14 is provided with a mounting hole 141 extending through the support plate 14 along its thickness. The battery cell shaping device 100 further includes a guide seat 63 and at least one backing plate 64. The guide seat 63 is removably mounted in the mounting hole 141. The guide seat 63 is provided with a guide hole 631. A guide rod is movably mounted in the guide hole 631 along the guide hole 631. The second driving member 62 is mounted on the guide seat 63. The backing plate 64 is removably mounted in the mounting hole 141 and is stacked with the guide seat 63 in the first direction.

[0098] Specifically, the support plate 14 may be provided with a mounting hole 141 extending through the support plate 14 along its thickness, i.e., along the third direction. A guide seat 63 and at least one backing plate 64 may be removably mounted within the mounting hole 141. The backing plate 64 and the guide seat 63 may be stacked in the first direction. The height of the guide seat 63 may be adjusted by adjusting the arrangement of the backing plates 64 and the guide seat 63.

[0099] The guide rod is movably connected to the guide seat 63 . The guide seat 63 may be provided with a guide hole 631 . The guide hole 631 may penetrate the guide seat 63 along the third direction. The guide rod may move along the guide hole 631 .

[0100] In addition, the second driving member 62 can be connected to the side of the guide seat 63 away from the installation space 15, one end of the guide rod can be connected to the second driving member 62, and the other end of the guide rod can extend toward the installation space 15 to facilitate cooperation with the limiting hole.

[0101] In this embodiment, a guide seat 63 and a pad 64 are stacked in the mounting hole 141 of the support plate 14, and the guide seat 63 and the pad 64 are detachably connected to the support plate 14, so that the height of the guide seat 63 can be adjusted, thereby adjusting the height of the guide rod, and then adjusting the height of the predetermined position of the first pressure plate 20 to meet the shaping requirements of battery cells 200 of different sizes.

[0102] In some optional embodiments, the mounting hole 141 may be a square hole, the guide seat 63 may be a rectangular parallelepiped, and the pad 64 may be a square pad 64. When there are multiple pads 64, the thicknesses of the pads 64 may be the same or different, which is not limited here. Providing pads 64 of different thicknesses can facilitate fine-tuning of the height of the guide seat 63.

[0103] For example, as shown in FIG4 and FIG5, a plurality of pads 64 of different thicknesses may be installed in the mounting hole 141, and the plurality of pads 64 of different thicknesses may all be located on the top side of the guide seat 63, when the guide seat 63 is located at the lowest position.

[0104] According to some optional embodiments of the present disclosure, the first pressing plate 20 includes a connecting plate 23 and an insulating pressing plate 24. The connecting plate 23 is threadedly connected to the first lead screw 41. The insulating pressing plate 24 is provided on a side of the connecting plate 23 facing the second pressing plate 30.

[0105] Specifically, the first pressure plate 20 can be mainly composed of a connecting plate 23 and an insulating pressure plate 24, wherein the connecting plate 23 can be connected to the driving component 40 and directly driven by the driving component 40. For example, the connecting plate 23 can be screwed to the first screw 41, or connected to the movable end of the cylinder.

[0106] In addition, an insulating pressure plate 24 can be provided on the side of the connecting plate 23 facing the second pressure plate 30. During the process of pre-pressing the battery cell 200 by the first pressure plate 20, the insulating pressure plate 24 abuts against the surface of the battery cell 200. By providing the insulating pressure plate 24, the battery cell 200 can be insulated from the first pressure plate 20 during the compaction process, thereby preventing the battery cell 200 from short-circuiting through the first pressure plate 20.

[0107] In some optional embodiments, a pressure sensor may be provided between the insulating pressure plate 24 and the connecting plate 23 to detect the pressure applied by the first pressure plate 20 on the battery cell 200. The pressure value detected by the pressure sensor can be used to control the movement of the first and second pressure plates 20, 30, so that the first and second pressure plates 20, 30 apply the required pressure to the battery cell 200 while also preventing damage to the battery cell 200 caused by excessive pressure. Alternatively, the pressure sensor may be a flat plate pressure sensor.

[0108] In some specific embodiments of the present disclosure, the battery cell shaping device 100 further includes a second guide member 32 . The second guide member 32 is provided on the bottom plate 11 and extends along the first direction. The second guide member 32 is used to guide the second pressing plate 30 to move in the first direction.

[0109] Specifically, a second guide member 32 can be provided on the side of the bottom plate 11 facing the top plate 12, the second guide member 32 can extend along the first direction, and the second guide member 32 can be connected to the second pressure plate 30 and guide the second pressure plate 30 to move along the first direction. The connection here can be a direct connection or an indirect connection, which is not limited here.

[0110] The guide member guides the second pressure plate 30 in such a way that the second guide member 32 is fixed on the support 10 and the second pressure plate 30 moves relative to the second guide member 32 along the first direction, or the second pressure plate 30 and the second guide member 32 move together along the first direction relative to the support 10. In both cases, the second guide member 32 can guide the second pressure plate 30 to move along the second direction.

[0111] Optionally, the second guide member 32 may include but is not limited to a guide rail, a guide groove, and a guide post.

[0112] In this embodiment, by providing a guide member, the movement direction of the second pressing plate 30 can be guided, and at the same time, the second pressing plate 30 can be prevented from becoming unstable and affecting the shaping quality of the battery cell 200 .

[0113] According to some optional embodiments of the present disclosure, the battery cell shaping device 100 also includes a movable block 70, which is located in the installation space 15. The movable block 70 has a first inclined surface 71, and an angle is formed between the plane where the first inclined surface 71 is located and the plane where the second direction is located. The second pressure plate 30 has a second inclined surface 33 that abuts against the first inclined surface 71. The movable block 70 is movable along the second direction to drive the second pressure plate 30 to move along the first direction.

[0114] Specifically, the movable block 70 can be installed in the installation space 15 , and the movable block 70 can be located on a side of the second pressing plate 30 away from the first pressing plate 20 , for example, the movable block 70 can be located at the bottom of the second pressing plate 30 .

[0115] One side surface of the movable block 70 may be formed as a first inclined surface 71. The plane containing the first inclined surface 71 and the plane containing the second direction may be inclined relative to each other to form an angle. For example, the movable block 70 may be a wedge-shaped block. When the movable block 70 is cut perpendicular to the first inclined surface 71, the cross-section of the movable block 70 may be substantially wedge-shaped.

[0116] The movable block 70 has a first side surface and a second side surface spaced apart along a first direction, and the first side surface and the second side surface are disposed opposite to each other. The first side surface of the movable block 70 can abut against a side surface of the bottom plate 11, and the second side surface of the movable block 70 can be formed as a first inclined surface 71. The plane in which the second direction lies can be the plane in which the first side surface of the movable block 70 lies, and the angle between the plane in which the first inclined surface 71 lies and the plane in which the second direction lies can be the angle between the plane in which the first side surface of the movable block 70 lies and the plane in which the second side surface of the movable block 70 lies.

[0117] Furthermore, the second pressing plate 30 has a second inclined surface 33, which can abut against the first inclined surface 71. In other words, the second inclined surface 33 can be parallel to the first inclined surface 71. During movement of the movable block 70 in the second direction, the first inclined surface 71 abuts against the second inclined surface 33, allowing the movable block 70 to drive the second pressing plate 30 in the first direction to move closer to or further away from the first pressing plate 20. Alternatively, the second pressing plate 30 can be a wedge-shaped plate. When the second pressing plate 30 is cut perpendicular to the first inclined surface 71, the cross-section of the second pressing plate 30 can be substantially wedge-shaped.

[0118] Alternatively, the second direction may be a left-right direction as shown in FIG8 , and the first direction may be an up-down direction as shown in the figure. Specifically, the movable block 70 may be disposed on the upper surface of the base plate 11 , and the movable block 70 may be movable left-right. The lower surface of the movable block 70 may extend horizontally. The upper surface of the movable block 70 may be formed as a first inclined surface 71 , and the first inclined surface 71 may be inclined relative to the lower surface of the movable block 70 . In other words, the plane on which the first inclined surface 71 lies may form an angle with the horizontal plane on which the left-right direction lies, and the angle may be α. The lower surface of the second pressing plate 30 may be formed as a second inclined surface 33 , and the upper surface of the second pressing plate 30 may extend horizontally.

[0119] When the movable block 70 moves to the right, the second pressure plate 30 can move upward, so that the distance between the first pressure plate 20 and the second pressure plate 30 is reduced, so as to apply pressure to the battery cell 200 located in the accommodating space 31, thereby achieving cold pressing of the battery cell 200. When the movable block 70 moves to the left, the second pressure plate 30 can move downward, so that the distance between the first pressure plate 20 and the second pressure plate 30 is increased, thereby reducing or removing the pressure applied to the battery cell 200.

[0120] It should be noted that in the process of compacting the battery cell 200 by the first pressure plate 20 and the second pressure plate 30, the work done on the battery cell 200 is W. According to the calculation principle of work, W=F1·S1=F2·S2, wherein F1 is the driving force along the first direction received by the second pressure plate 30 when it moves, S1 is the distance the second pressure plate 30 moves along the first direction, F2 is the driving force along the second direction received by the movable block 70 when it moves, and S2 is the distance the movable block 70 moves along the second direction. Therefore, when a smaller force is applied to the movable block 70 that can drive the movable block 70 to move in the second direction, by increasing the moving distance of the movable block 70, that is, making the stroke of S1 smaller and the stroke of S2 larger, the second pressure plate 30 can be subjected to a larger driving force, so that the second pressure plate 30 applies a larger force to the battery cell 200 to meet the pressure and work requirements of cold pressing the battery cell 200.

[0121] Therefore, in this embodiment, by providing a movable block 70 having a first inclined surface 71 and a second pressure plate 30 having a second inclined surface 33, the wedge-shaped structure drive is realized by utilizing the cooperation of the first inclined surface 71 and the second inclined surface 33. This can reduce the driving force required to drive the movable block 70 while outputting a larger shaping pressure to the battery cell 200. This can reduce the power of the driving structure that drives the movable block 70 while meeting the driving force required for shaping the battery cell 200, thereby reducing production costs. In addition, the volume of the driving structure can also be reduced, thereby reducing the volume of the battery cell shaping device 100 and saving space.

[0122] Preferably, the angle between the plane where the first inclined surface 71 is located and the plane where the second direction is located is between 0.5° and 15°.

[0123] Specifically, since W=F1·S1=F2·S2, where S1=tanα·S2, that is, F2=F1·tanα, when α is between 0.5° and 15°, tanα is approximately 0.087~0.268. At this time, the distance that the movable block 70 moves in the horizontal direction is much greater than the distance that the second pressure plate 30 moves in the vertical direction, and the driving force F2 along the second direction applied to the movable block 70 is much smaller than the driving force F1 along the vertical direction applied to the second pressure plate 30.

[0124] According to other embodiments of the present disclosure, the battery cell shaping device 100 further includes a second lead screw 81 and a third drive member 82. The second lead screw 81 extends in the second direction and is threadedly connected to the movable block 70. The second lead screw 81 is rotatably connected to the side plate 13 about its own axis to drive the movable block 70 in the second direction. A third drive rod is provided on the side plate 13, and the third drive member 82 is connected to the second lead screw 81 to drive the second lead screw 81.

[0125] Specifically, the second lead screw 81 and the movable block 70 can be connected by a thread. Specifically, the outer peripheral surface of the second lead screw 81 can have an external thread, and the movable block 70 can be provided with a threaded hole. The threaded hole can be provided with an internal thread that cooperates with the external thread of the second lead screw 81. During the rotation of the second lead screw 81 about its own axis, the movable block 70 can move in the second direction, and the movement direction of the movable block 70 can be controlled by controlling the rotation direction of the second lead screw 81. For example, the second lead screw 81 can extend in the left-right direction as shown in Figure 7. During the rotation of the second lead screw 81 about its own axis, the movable block 70 can move left-right.

[0126] In addition, the second lead screw 81 may be connected to a third driving member 82, and the second lead screw 81 may be driven to rotate around its own axis by the third driving member 82. Optionally, the third driving member 82 may include a motor.

[0127] Among them, the movable block 70, the second pressure plate 30 and the second screw 81 are connected in cooperation to roughly form a wedge-shaped transmission structure. As shown in the figure, the wedge-shaped transmission structure can convert the movement of the movable block 70 in the left and right directions into the movement of the second pressure plate 30 in the up and down directions.

[0128] In this embodiment, the power source for driving the movable block 70 to move is mainly composed of the second lead screw 81 and the third drive member 82. Due to the cooperation between the first inclined surface 71 and the second inclined surface 33, the third drive member 82 can provide a smaller force when driving the movable block 70, so that the second pressure plate 30 can apply a larger pressing force to the battery cell 200. On the one hand, it is beneficial to reduce the power of the third drive member 82, reduce the cost and occupied space of the third drive member 82, and reduce the size of the battery cell shaping device 100. On the other hand, it is also beneficial to reduce the size of the second lead screw 81, reduce the cost of the second lead screw 81, and avoid the increase in cost and production cycle caused by customizing a large-diameter lead screw.

[0129] Optionally, the movement of the movable block 70 can also be driven by a power source structure such as a cylinder or a hydraulic cylinder. The power output end of the cylinder or the hydraulic cylinder can extend along the second direction and be connected to the movable block 70 to drive the movable block 70 to move along the second direction.

[0130] The structure for driving the movable block 70 to move can be directly installed on the side plate 13. For example, the second screw 81 can be rotatably supported on the side plate 13, eliminating the need to set a bearing seat on the bottom plate 11, which is conducive to streamlining the structure of the battery cell shaping device 100 and reducing the size of the battery cell shaping device 100.

[0131] In some specific embodiments of the present disclosure, a first rolling member 73 is provided on at least one of the base plate 11, the movable block 70, the first inclined surface 71 and the second inclined surface 33, and rolling friction is formed between the movable block 70 and the support 10, and / or rolling friction is formed between the first inclined surface 71 and the second inclined surface 33.

[0132] Specifically, the friction force that the movable block 70 is subjected to when it moves relative to the support 10 can be f, and the friction force that the second pressure plate 30 is subjected to when it moves relative to the movable block 70 can be f. At least one of f and f can be a rolling friction force. Since the rolling friction force is smaller than the sliding friction force, and the existence of the friction force requires the movable block 70 to consume a part of the work to overcome the friction force during the movement process, therefore, by setting the rolling friction between the movable block 70 and the support 10, and / or the rolling friction between the first inclined surface 71 and the second inclined surface 33, the driving force that drives the movable block 70 to move can be reduced, and the work loss of the movable block 70 can be reduced.

[0133] Optionally, rolling friction can be formed between the support 10 and the movable block 70. For example, a first rolling member 73 can be set on the upper surface of the base plate 11 of the support 10, or on the lower surface of the movable block 70. A first rolling member 73 can also be set on both the upper surface of the base plate 11 of the support 10 and the lower surface of the movable block 70, so that rolling friction can be formed between the support 10 and the movable block 70.

[0134] Optionally, rolling friction can be formed between the first inclined surface 71 and the second inclined surface 33. For example, a first rolling member 73 can be set on the first inclined surface 71, and a first rolling member 73 can be set on the second inclined surface 33. A first rolling member 73 can also be set on both the first inclined surface 71 and the second inclined surface 33, so that rolling friction can be formed between the first inclined surface 71 and the second inclined surface 33.

[0135] In this embodiment, a first rolling member 73 is provided on at least one of the support 10, the movable block 70, the first inclined surface 71 and the second inclined surface 33, and rolling friction is formed between the movable block 70 and the support 10, and / or rolling friction is formed between the first inclined surface 71 and the second inclined surface 33, which is beneficial to further reduce the driving force for driving the movable block 70 to move and reduce the work loss of the movable block 70. In other words, it is beneficial to reduce the power of the third driving member 82 and the size of the second screw 81, thereby reducing production costs and occupied space.

[0136] According to some other embodiments of the present disclosure, the first rolling element 73 is a plane needle roller bearing 73 a , and the plane needle roller bearing 73 a is provided on at least one of the first inclined surface 71 and the second inclined surface 33 .

[0137] That is to say, a plane needle roller bearing 73a can be set on the first inclined surface 71, a plane needle roller bearing 73a can be set on the second inclined surface 33, or a plane needle roller bearing 73a can be set on both the first inclined surface 71 and the second inclined surface 33, so that rolling friction is formed between the first inclined surface 71 and the second inclined surface 33, thereby reducing the friction force exerted on the second pressure plate 30 when it moves relative to the movable block 70, which is beneficial to reducing the driving force for driving the movable block 70 to move, reducing the work loss of the movable block 70, and further beneficial to reducing the power of the third driving member 82 and the size of the second screw 81, so as to reduce production costs and occupied space.

[0138] According to some optional embodiments of the present disclosure, a surface of the movable block 70 is provided with a groove 72 extending along the second direction, and a plurality of second rolling members 74 are provided on the support 10. The plurality of second rolling members 74 are arranged at intervals along the second direction, and rolling friction is formed between the plurality of second rolling members 74 and the bottom surface of the groove 72.

[0139] In which, the surface of the movable block 70 can be provided with a groove 72, the groove 72 can extend along the second direction, the multiple second rolling elements 74 on the support 10 can be arranged at intervals along the extension direction of the groove 72, and the multiple second rolling elements 74 can roll along the bottom surface of the groove 72 and form rolling friction with the bottom surface of the groove 72.

[0140] Optionally, the movable block 70 may have a third side surface and a fourth side surface separated along the third direction. The upper end of the third side surface and the upper end of the fourth side surface may be respectively connected to the first inclined surface 71, and the lower end of the third side surface and the lower end of the fourth side surface may be respectively connected to the lower surface of the movable block 70. A groove 72 may be provided on the third side surface and the fourth side surface, respectively, and the groove 72 may extend along the second direction. The second rolling member 74 may include a roller that can rotate about its own axis, and the axis of the roller may extend in the vertical direction. Each groove 72 may correspond to a plurality of rollers, and each groove 72 may be provided with a plurality of rollers spaced apart along the second direction. When the movable block 70 moves along the second direction, the rollers may roll on the bottom surface of the groove 72.

[0141] In this embodiment, a groove 72 extending along the second direction is provided on the surface of the movable block 70, and a plurality of second rolling members 74 cooperate with the groove 72, so that rolling friction is formed between the movable block 70 and the support 10. On the one hand, it is beneficial to reduce the friction force on the movable block 70 when it moves, thereby reducing the driving force required to drive the movable block 70. On the other hand, the groove 72 can also guide the movable block 70 to move along the second direction, thereby improving the stability of the movable block 70 when it moves.

[0142] Optionally, a plane needle roller bearing 73a may be provided on at least one of the upper surface of the base plate 11 and the lower surface of the movable block 70, so that the friction force exerted on the movable block 70 when it moves relative to the base plate 11 is a rolling friction force, which is beneficial to reducing the friction force exerted on the movable block 70 and thereby reducing the driving force that drives the movable block 70 to move.

[0143] In some specific embodiments of the present disclosure, the second pressing plate 30 has a supporting surface on a side facing the first pressing plate 20. The battery cell shaping device 100 further includes a connecting block 91 and a conveying assembly 92. The connecting block 91 is disposed on the supporting surface. The conveying assembly 92 is connected to the connecting block 91. At least a portion of the conveying assembly 92 is positioned between the first pressing plate 20 and the second pressing plate 30 to convey the battery cells 200.

[0144] Specifically, the conveying assembly 92 and the connecting block 91 can be arranged between the first pressing plate 20 and the second pressing plate 30, wherein the connecting block 91 can be directly connected to the supporting surface of the second pressing plate 30, and the conveying assembly 92 can be supported on the connecting block 91.

[0145] At least a portion of the conveying assembly 92 is movable to convey the battery cells 200 along the third direction. For example, the conveying assembly 92 may be a conveyor belt.

[0146] For example, the upper side surface of the second pressing plate 30 can be formed as a bearing surface, the conveying component 92 can be set on the upper side surface of the second pressing plate 30, and the conveying component 92 can convey the battery cell 200 in the horizontal direction. During the movement of the second pressing plate 30 in the up and down directions, the conveying component 92 and the battery cell 200 can move up and down synchronously with the second pressing plate 30.

[0147] The frame of the conveying assembly 92 can be connected to the second pressing plate 30 through the connecting block 91 to prevent the connection between the conveying assembly 92 and the second pressing plate 30 from affecting the movement of the movable parts in the conveying assembly 92 .

[0148] In this embodiment, a conveyor is provided to convey the battery cells 200 , which can realize rapid loading and unloading of the battery cells 200 , improve the efficiency of shaping the battery cells 200 , and prevent the battery cells 200 from directly contacting the second pressing plate 30 .

[0149] The present disclosure also provides a winding machine including the cell shaping device 100 according to any of the above-described embodiments. Because the cell shaping device 100 according to the embodiments of the present disclosure has the above-described technical effects, the winding machine according to the embodiments of the present disclosure also has corresponding technical effects, namely, it has the advantages of a simple and compact structure, which allows the reaction force during cell shaping to be dispersed through the support 10, thereby improving the strength and reliability of the cell shaping device 100.

[0150] Finally, it should be noted that the first direction, the second direction and the third direction mentioned above can be referred to the marks in Figures 1 to 8. The X direction, the Y direction and the Z direction intersect with each other.

[0151] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cell shaping device, characterized in that: include: Support; a first pressing plate connected to the support; The second pressing plate is movably disposed on the support along a first direction, and the second pressing plate is spaced apart from the first pressing plate in the first direction to form an accommodating space suitable for accommodating the battery cell.

2. The cell shaping device according to claim 1, characterized in that: The support includes a bottom plate, a top plate and two side plates, the bottom plate and the top plate are spaced apart in the first direction, the two side plates are spaced apart in the second direction, the second direction intersects with the first direction, each side plate is respectively connected to the bottom plate and the top plate, the bottom plate, the top plate and the two side plates define an installation space, and the first pressure plate and the second pressure plate are accommodated in the installation space.

3. The battery cell shaping device according to claim 2, characterized in that: A hollow portion is provided on the side plate, and the hollow portion penetrates the side plate along the thickness direction of the side plate.

4. The battery cell shaping device according to claim 1, characterized in that: Also includes: A driving assembly is provided on the support, and the driving assembly is connected to the first pressing plate to drive the first pressing plate to move along the first direction.

5. The battery cell shaping device according to claim 4, characterized in that: The drive assembly includes: a first screw extending along the first direction and being threadedly connected to the first pressing plate, the first screw being rotatable about its own axis to drive the first pressing plate to move along the first direction; A first driving member is connected to the first lead screw to drive the first lead screw.

6. The battery cell shaping device according to claim 4, characterized in that: The driving assembly includes a cylinder having a movable end movable along the first direction, and the movable end is connected to the first pressing plate.

7. The battery cell shaping device according to claim 2, characterized in that: Also includes: A first guide member is provided on the side plate and extends along the first direction, and the first pressing plate is movable along the first guide member.

8. The battery cell shaping device according to claim 7, characterized in that: The first guide member includes a guide rail.

9. The battery cell shaping device according to claim 7, characterized in that: A plurality of first guide members are provided on a side surface of each side plate facing the first pressing plate.

10. The battery cell shaping device according to claim 2, characterized in that: The support further includes a support plate, the support plate connecting the two side plates, the support plate being located between the bottom plate and the top plate, the first pressing plate being provided with a locking portion, and the battery cell shaping device further including: a limiting member, the limiting member being provided on the support plate and movable between a locking position and an unlocking position to cooperate with the locking portion to lock or unlock the first pressing plate; A second driving member is provided on the support plate, and the second driving member is connected to the limiting member to drive the limiting member.

11. The battery cell shaping device according to claim 10, characterized in that: The support includes two support plates, which are spaced apart in the third direction. The first direction, the second direction and the third direction are perpendicular to each other. The limiting member and the second driving member are provided on each support plate.

12. The battery cell shaping device according to claim 11, characterized in that: The locking portion is a limiting hole, the limiting member is a guide rod, the guide rod extends along the third direction, the second driving member drives the guide rod to be movable along the third direction, when the limiting member is in the locking position, a portion of the guide rod extends into the limiting hole to lock the first pressure plate, and when the limiting member is in the unlocking position, the guide rod is separated from the limiting hole.

13. The battery cell shaping device according to claim 12, characterized in that: The support plate is provided with a mounting hole penetrating along the thickness direction thereof, and the battery cell shaping device further comprises: a guide seat, the guide seat being detachably mounted on the mounting hole, the guide seat being provided with a guide hole, the guide rod being movably mounted on the guide hole along the guide hole, and the second driving member being mounted on the guide seat; At least one pad is detachably mounted on the mounting hole and is stacked with the guide seat in the first direction.

14. The battery cell shaping device according to claim 2, characterized in that: Also includes: A second guide member is provided on the bottom plate and extends along the first direction, and the second guide member is used for guiding the second pressing plate to move in the first direction.

15. The battery cell shaping device according to claim 2, characterized in that: Also includes: A movable block, wherein the movable block is located in the installation space, the movable block has a first inclined surface, an angle is formed between the plane where the first inclined surface is located and the plane where the second direction is located, the second pressure plate has a second inclined surface that abuts against the first inclined surface, and the movable block can move along the second direction to drive the second pressure plate to move along the first direction.

16. The battery cell shaping device according to claim 15, characterized in that: Also includes: a second lead screw extending along the second direction and being threadedly connected to the movable block, the second lead screw being rotatably connected to the side plate around its own axis to drive the movable block to move along the second direction; A third driving member, wherein the third driving rod is disposed on the side plate, and the third driving member is connected to the second lead screw to drive the second lead screw.

17. The battery cell shaping device according to claim 15, characterized in that: A first rolling element is provided on at least one of the bottom plate, the movable block, the first inclined surface and the second inclined surface, and rolling friction is formed between the movable block and the support, and / or rolling friction is formed between the first inclined surface and the second inclined surface.

18. The battery cell shaping device according to claim 17, characterized in that: The first rolling element is a plane needle roller bearing, and the plane needle roller bearing is provided on at least one of the first inclined surface and the second inclined surface.

19. The battery cell shaping device according to claim 15, characterized in that: A groove extending along the second direction is provided on the surface of the movable block, and a plurality of second rolling elements are provided on the support. The plurality of second rolling elements are arranged at intervals along the second direction, and rolling friction is formed between the plurality of second rolling elements and the bottom surface of the groove.

20. The battery cell shaping device according to any one of claims 1 to 19, characterized in that: The second pressing plate has a bearing surface on a side facing the first pressing plate, and the battery cell shaping device further includes: a connecting block, the connecting block being arranged on the bearing surface; A conveying assembly is connected to the connecting block, and at least a portion of the conveying assembly is located between the first pressing plate and the second pressing plate to convey the battery core.

21. A winding machine, characterized in that: include: The battery cell shaping device according to any one of claims 1 to 20.

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