Battery cell shaping device and winding machine

Abstract

The utility model provides a battery cell shaping device and a winding machine, and the battery cell shaping device comprises a support; the first pressing plate is connected with the support; the second pressing plate is movably arranged on the support in the first direction, and the second pressing plate and the first pressing plate are spaced in the first direction to form a containing space suitable for containing the battery cell. According to the battery cell shaping device disclosed by the utility model, the first pressing plate and the second pressing plate are arranged on the support at an interval, the second pressing plate is close to the first pressing plate along the first direction so as to realize shaping of the battery cell, and the battery cell shaping device has the advantage of simple and compact structure; the counter-acting force during shaping of the battery cell can be dispersed through the support, and the strength and the reliability of the battery cell shaping device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and more specifically, to a battery core shaping device and a winding machine comprising the battery core shaping device. Background Art

[0002] In the production process of battery cells, the battery cells need to be shaped by cold pressing after winding. As the battery cells are wound thicker and thicker, the pressure required for shaping the battery cells is also increasing. In the prior art, a battery cell shaping device is usually used to shape and press the battery cells using its upper and lower pressure plates. Due to the interaction of forces, the greater the pressure applied to the battery cells, the greater the reaction force on the battery cell shaping device. However, the strength of the existing battery cell shaping device is difficult to meet the pressure requirements for battery cell shaping. Utility Model Content

[0003] The utility model provides a new technical solution for a battery core shaping device, which can at least solve the problem of insufficient strength of the battery core shaping device in the prior art.

[0004] The utility model also provides a winding machine, comprising the above-mentioned battery core shaping device.

[0005] According to the first aspect of the utility model, a battery cell shaping device is provided, comprising: a support; a first pressure plate, the first pressure plate is connected to the support; a second pressure plate, the second pressure plate is movably arranged on the support along a first direction, and the second pressure plate is spaced apart from the first pressure plate in the first direction to form an accommodating space suitable for accommodating the battery cell.

[0006] 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.

[0007] Optionally, 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.

[0008] Optionally, the battery cell shaping device further includes: a driving component, wherein 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.

[0009] Optionally, the drive assembly includes: a first lead screw, which extends along the first direction and is threadedly connected to the first pressure plate, and the first lead screw can rotate around its own axis to drive the first pressure plate to move along the first direction; and a first driving member, which is connected to the first lead screw to drive the first lead screw.

[0010] 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.

[0011] Optionally, the battery cell shaping device further includes: a first guide member, the first guide member is arranged on the side plate and extends along the first direction, and the first pressing plate is movable along the first guide member.

[0012] Optionally, the first guide member comprises a guide rail.

[0013] Optionally, a plurality of the first guide members are provided on a side surface of each of the side plates facing the first pressure plate.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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 on the mounting hole, the guide seat is provided with a guide hole, 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.

[0018] Optionally, the battery cell shaping device further includes: a second guide member, which is disposed on the bottom plate and extends along the first direction, and is used to guide the second pressing plate to move in the first direction.

[0019] Optionally, the battery cell shaping device also includes: a movable block, 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 is movable along the second direction to drive the second pressure plate to move along the first direction.

[0020] 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, which is arranged on the side plate, and the third driving member is connected to the second lead screw to drive the second lead screw.

[0021] 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.

[0022] Optionally, the first rolling element is a plane needle bearing, and the plane needle bearing is arranged on at least one of the first inclined surface and the second inclined surface.

[0023] 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.

[0024] Optionally, the second pressing plate has a bearing surface on the side facing the first pressing plate, and the battery cell shaping device also 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.

[0025] According to a second aspect of the utility model, a winding machine is provided, comprising the battery cell shaping device described in any one of the above embodiments.

[0026] According to the battery cell shaping device of the utility model, a first pressing plate and a second pressing plate are spaced apart on a support, and the second pressing plate is approached to the first pressing plate along a first direction to achieve the shaping of the battery cell. This has the advantages of a simple and compact structure. The first pressing plate and the second pressing plate are both connected to the support, so that the reaction force during the shaping of the battery cell can be dispersed through the support, which is beneficial to improving the strength and reliability of the battery cell shaping device.

[0027] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0029] Figure 1 is a three-dimensional diagram of a battery cell shaping device according to an embodiment of the utility model;

[0030] Figure 2 is a side view of a battery cell shaping device according to an embodiment of the utility model;

[0031] Figure 3 It is a schematic diagram of a partial structure of a battery cell shaping device according to an embodiment of the utility model;

[0032] Figure 4 The present invention is a three-dimensional diagram of a support plate and a limit assembly in a battery core shaping device according to an embodiment of the present invention. Figure 1 ;

[0033] Figure 5 The present invention is a three-dimensional diagram of a support plate and a limit assembly in a battery core shaping device according to an embodiment of the present invention. Figure 2 ;

[0034] Figure 6 It is a three-dimensional diagram of the second pressing plate and its surrounding structures in the battery cell shaping device according to one embodiment of the utility model;

[0035] Figure 7It is a three-dimensional diagram of a movable block and its surrounding structures in a battery cell shaping device according to an embodiment of the utility model;

[0036] Figure 8 It is a schematic diagram of the cooperation between the second pressing plate and the movable block in the battery cell shaping device according to an embodiment of the utility model.

[0037] Reference numerals

[0038] Cell shaping device 100;

[0039] Support 10; bottom plate 11; top plate 12; side plate 13; hollow portion 131; support plate 14; mounting hole 141; mounting space 15;

[0040] First pressing plate 20; first guide member 21; locking portion 22; connecting plate 23; insulating pressing plate 24;

[0041] The second pressing plate 30; the accommodating space 31; the second guide member 32; the second inclined surface 33;

[0042] Driving assembly 40; first lead screw 41; first driving member 42;

[0043] Limiting member 61; second driving member 62; guide seat 63; guide hole 631; pad 64;

[0044] 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;

[0045] Connecting block 91; conveying assembly 92;

[0046] Battery cells 200. DETAILED DESCRIPTION

[0047] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0048] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0049] 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 as part of the specification.

[0050] 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.

[0051] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] The following first describes in detail the battery cell shaping device 100 according to an embodiment of the utility model with reference to the accompanying drawings.

[0053] like Figures 1 to 8 As shown, the battery cell shaping device 100 according to the embodiment of the utility model includes: a support 10, a first pressing plate 20 and a second pressing plate 30.

[0054] 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 the first direction, and 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.

[0055] In other words, the battery cell shaping device 100 according to the embodiment of the utility model is mainly composed of a support 10, a first pressing plate 20 and a second pressing plate 30. The battery cell shaping device 100 can shape the battery cell 200 and flatten the wound round battery cell 200.

[0056] A first pressing plate 20 and a second pressing plate 30 may be connected to the support 10. In a first direction, the first pressing plate 20 and the second pressing plate 30 may be spaced apart to form a receiving space 31, and the battery cell 200 may be received in the receiving space 31. The second pressing plate 30 may also be movable in the first direction. Thus, by driving the second pressing plate 30, the battery cell 200 in the receiving space 31 may be shaped.

[0057] Therefore, according to the battery cell shaping device 100 of the embodiment of the utility model, the first pressure plate 20 and the second pressure plate 30 are spaced apart 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. It has the advantages 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 improve the strength and reliability of the battery cell shaping device 100.

[0058] In some specific embodiments of the present utility model, 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 is respectively connected to the bottom plate 11 and the top plate 12, 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.

[0059] In other words, the support 10 may be mainly composed of a bottom plate 11, a top plate 12 and two side plates 13. In a first direction, the bottom plate 11 and the top plate 12 may be spaced apart. In a second direction, the two side plates 13 may be spaced apart. Each side plate 13 may 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 may enclose and define an installation space 15. The first direction and the second direction may intersect. The first pressing plate 20 and the second pressing plate 30 are both installed in the installation space 15.

[0060] 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.

[0061] 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 plate 13 in the vertical direction may be connected to the top plate 12 and the bottom plate 11 respectively.

[0062] The first pressing plate 20 or the second pressing 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 pressing plate 20 and the second pressing 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.

[0063] 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, and the first pressure plate 20 and the second pressure plate 30 are placed in the installation space 15. The paired side plates 13 are used to share the load when the battery cell 200 is being 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.

[0064] 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 second pressure plate 30 to move 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.

[0065] 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. 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.

[0066] 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 and 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 resistance than ordinary connecting columns. Therefore, the support 10 has higher strength and stability.

[0067] According to one embodiment of the utility model, 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, which can not only reduce the weight of the side panel 13 itself and reduce the production cost of the side panel 13, but also utilize the hollowing to form a visual window, so as to facilitate the monitoring of the shaping process of the battery cell 200.

[0068] According to some other embodiments of the present invention, the battery cell shaping device 100 further includes a driving component 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.

[0069] Specifically, the top plate 12 may be provided with a driving assembly 40, which may be connected to the support 10, and the driving assembly 40 may drive the first pressing plate 20 to approach or move away from the second pressing plate 30 along a first direction. Optionally, the driving member 40 may be connected to the top plate 12.

[0070] 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 a 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 a low pressure, so as to change the shape of the battery cell 200 and complete the shaping of the battery cell 200.

[0071] In this embodiment, the first pressing plate 20 is configured to be movable along the first direction under the drive of the driving assembly 40, and the position of the first pressing 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 beneficial to improving the applicability of the battery cell shaping device 100.

[0072] In some specific embodiments of the present utility model, the driving assembly 40 includes a first lead screw 41 and a first driving member 42. The first lead screw 41 extends along the first direction and is threadedly connected to the first pressing plate 20. The first lead screw 41 can rotate around its own axis to drive the first pressing plate 20 to move along the first direction. The first driving member 42, which is connected to the first lead screw 41 to drive the first lead screw 41, has the advantages of simple structure and easy control.

[0073] Specifically, the driving assembly 40 can be mainly composed of a first lead screw 41 and a first driving member 42. The axis of the first lead screw 41 can extend along the first direction, and the first pressure plate 20 can be screwed to the first lead screw 41. Thus, during the rotation of the first lead screw 41 around its own axis, the first pressure plate 20 can move in the first direction.

[0074] One end of the first lead screw 41 can be rotatably connected to the top plate 12, the first driving member 42 can be connected to the top plate 12, the conveying end of the first driving member 42 can be connected to the first lead screw 41 and drive the first lead screw 41 to rotate, the connection can be a direct connection or an indirect connection, which is not limited here.

[0075] Optionally, the first driving member 42 may be a motor, and power may be transmitted between the motor and the first lead screw 41 through belt rotation.

[0076] According to some optional embodiments of the utility model, the driving 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.

[0077] The first pressing plate 20 is directly driven to move in the first direction by the movable end of the cylinder. Compared with the first pressing plate 20 driven by the lead screw nut, during the shaping process of the battery cell 200, the second pressing plate 30 will approach the first pressing plate 20. When the first pressing plate 20 is subjected to the reaction force, the lead screw will be driven to rotate, while the motor driving the lead screw does not rotate at this time, which eventually causes the lead screw to wear and affects the service life of the driving assembly 40. The first pressing plate 20 driven by the cylinder has a longer service life and a simpler structure.

[0078] According to some other embodiments of the present invention, the battery cell shaping device 100 further includes a first guide member 21 , which is disposed on the side plate 13 and extends along a first direction, and the first pressing plate 20 is movable along the first guide member 21 .

[0079] Specifically, the first guide member 21 can be directly or indirectly mounted on the side plate 13, and the side plate 13 can be used as a carrier to carry the first guide member 21, thereby eliminating the auxiliary structure for mounting the first guide member 21, facilitating the installation and commissioning of the first guide member 21, and the first guide member 21 can be arranged on the side plate 13 to have higher stability. In addition, the structure of the battery cell shaping device 100 can be made more compact, and the overall size of the battery cell shaping device 100 can be reduced.

[0080] In some specific embodiments of the present invention, the first guide member 21 includes a guide rail, thereby facilitating the direct installation of the guide rail on the side plate 13, facilitating the installation and debugging of the guide rail. A guide block may be provided on the first pressing plate 20, and the guide rail may be embedded in the guide block and guide the guide block to move along the first direction.

[0081] Optionally, the guide rail may be integrally formed on a side surface of the side plate 13 facing the installation space 15 , which may reduce the number of parts of the battery cell shaping device 100 .

[0082] According to some optional embodiments of the present invention, a plurality of first guide members 21 are provided on one side of each side plate 13 facing the first pressing plate 20. Providing a plurality of guide members on each side plate 13 is beneficial to improving the stability of the first pressing plate 20, and preventing the first pressing plate 20 from deflecting or shaking and affecting the shaping quality of the battery cell 200.

[0083] For example, two guide rails may be provided on each side panel 13, and the two guide rails on the same side panel 13 may be spaced apart in the horizontal direction, so that the four guide rails may be connected to form a quadrilateral in a top view, and the first pressing plate 20 is connected to the four guide rails. The four guide rails are used to simultaneously guide the first pressing plate 20 to move in the first direction, which is beneficial to improving the stability of the first pressing plate 20.

[0084] According to some other embodiments of the utility model, the support 10 further includes a support plate 14, the support plate 14 connects the two side plates 13, the support plate 14 is located between the bottom plate 11 and the top plate 12, the first pressing plate 20 is provided with a locking portion 22, and 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 the limiter 61 is movable between a locking position and an unlocking position to cooperate with the locking portion 22 to lock or unlock the first pressing plate 20. The second drive member 62 is provided on the support plate 14, and the second drive member 62 is connected to the limiter 61 to drive the limiter 61.

[0085] 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.

[0086] The support plate 14 may be provided with a limiter 61 and a second drive member 62, and the first pressure plate 20 may be provided with a locking portion 22. The limiter 61 is movably connected to the support plate 14, and the second drive member 62 may be connected to the limiter 61 and drive the limiter 61 to move between a locked position and an unlocked position. The movement of the limiter 61 may include, but is not limited to, linear movement and curved movement, which are not limited here.

[0087] Optionally, the second driving member 62 may be disposed 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 .

[0088] 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.

[0089] 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 at 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.

[0090] 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.

[0091] 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 more compact and the volume of the battery cell shaping device 100 can be reduced.

[0092] 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.

[0093] In some specific embodiments of the present invention, 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.

[0094] 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.

[0095] Optionally, 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°.

[0096] In addition, at least one stopper 61 and at least one second driving member 62 may be provided on each support plate 14. Thus, the stoppers 61 on the two support plates 14 can be used to stop the first pressing plate 20 at both ends in the third direction, so that the force on the first pressing plate 20 can be more uniform, thereby preventing the first pressing plate 20 from being unstable due to unilateral force.

[0097] 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 a plurality of limiting members 61 through a transmission structure.

[0098] According to some optional embodiments of the present invention, 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 a 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 an unlocking position, the guide rod is separated from the limiting hole.

[0099] Specifically, the end of the first pressing plate 20 in the third direction may have a limiting hole, the limiting hole may extend along the third direction, the guide rod extends along the third direction and may move along the third direction, and may extend into or exit the limiting hole.

[0100] 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 make the guide rod extend into the limiting hole to complete the limiting of the first pressing plate 20 .

[0101] 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 .

[0102] Optionally, the second driving member 62 may be a limit cylinder, a telescopic rod of the limit cylinder is movable along a third direction, and the telescopic rod is connected to the guide rod and drives the guide rod.

[0103] In this embodiment, the structure of the guide rod and the limiting hole is simple, and the connection structure formed after the guide rod extends into the limiting hole has good strength, which 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.

[0104] 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, it will not be damaged, which is beneficial to improve the life of the drive component 40.

[0105] According to some other embodiments of the utility model, the support plate 14 is provided with a mounting hole 141 penetrating along the thickness direction thereof, and the battery cell shaping device 100 further includes a guide seat 63 and at least one pad 64. The guide seat 63 is detachably provided at the mounting hole 141, a guide hole 631 is provided on the guide seat 63, a guide rod is movably provided at the guide hole 631 along the guide hole 631, and a second driving member 62 is provided at the guide seat 63. The pad 64 is detachably provided at the mounting hole 141 and is stacked with the guide seat 63 in the first direction.

[0106] Specifically, the support plate 14 may be provided with a mounting hole 141, and the mounting hole 141 may penetrate the support plate 14 along the thickness direction of the support plate 14, that is, along the third direction. A guide seat 63 and at least one pad 64 may be detachably mounted in the mounting hole 141, and the pad 64 and the guide seat 63 may be stacked in the first direction. By adjusting the arrangement sequence of the pad 64 and the guide seat 63, the height of the guide seat 63 may be adjusted.

[0107] 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 .

[0108] 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.

[0109] 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.

[0110] In some optional embodiments, the mounting hole 141 may be a square hole, the guide seat 63 may be a rectangular parallelepiped, the pad 64 may be a square pad 64, and when there are multiple pads 64, the thicknesses of the multiple pads 64 may be the same or different, which is not limited here. Providing pads 64 of different thicknesses can facilitate fine-tuning the height of the guide seat 63.

[0111] For example, Figure 4 and Figure 5 As shown, a plurality of pads 64 with different thicknesses may be installed in the mounting hole 141 , and the plurality of pads 64 with different thicknesses may all be located on the top side of the guide seat 63 , and at this time the guide seat 63 is located at the lowest position.

[0112] According to some optional embodiments of the present invention, 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 disposed on a side of the connecting plate 23 facing the second pressing plate 30.

[0113] 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.

[0114] 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 pre-pressing of 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.

[0115] 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 control the activities of the first pressure plate 20 and the second pressure plate 30, so that the first pressure plate 20 and the second pressure plate 30 apply a pressure that meets the requirements to the battery cell 200, and at the same time, it can also prevent the pressure applied to the battery cell 200 from being too large and causing damage to the battery cell 200. Optionally, the pressure sensor can be a flat pressure sensor.

[0116] In some specific embodiments of the present invention, the battery cell shaping device 100 further includes a second guide member 32 , which is disposed on the bottom plate 11 and extends along the first direction, and is used to guide the second pressing plate 30 to move in the first direction.

[0117] Specifically, a second guide member 32 may be provided on the side of the bottom plate 11 facing the top plate 12, the second guide member 32 may extend along the first direction, and the second guide member 32 may be connected to the second pressure plate 30 and guide the second pressure plate 30 to move along the first direction. The connection here may be a direct connection or an indirect connection, which is not limited here.

[0118] The guiding of the second pressure plate 30 by the guide member can be that the second guide member 32 is fixed on the support 10 and the second pressure plate 30 moves along the first direction relative to the second guide member 32, 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.

[0119] Optionally, the second guide member 32 may include but is not limited to a guide rail, a guide groove and a guide column.

[0120] 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 .

[0121] According to some optional embodiments of the utility model, 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 stops at the first inclined surface 71. The movable block 70 can move along the second direction to drive the second pressure plate 30 to move along the first direction.

[0122] Specifically, the movable block 70 may be installed in the installation space 15 , and the movable block 70 may be located on a side of the second pressing plate 30 away from the first pressing plate 20 , for example, the movable block 70 may be located at the bottom of the second pressing plate 30 .

[0123] One side surface of the movable block 70 may be formed as a first inclined surface 71, and the plane where the first inclined surface 71 is located may be relatively inclined with the plane where the second direction is located to form an angle. For example, the movable block 70 may be a wedge-shaped block, and when the movable block 70 is cut along a direction perpendicular to the first inclined surface 71, the cross section of the movable block 70 may be roughly wedge-shaped.

[0124] The movable block 70 has a first side surface and a second side surface separated along a first direction, and the first side surface and the second side surface are arranged opposite to each other, the first side surface of the movable block 70 can be in contact with 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 where the second direction is located can be the plane where the first side surface of the movable block 70 is located, and the angle between the plane where the first inclined surface 71 is located and the plane where the second direction is located can be the angle between the plane where the first side surface of the movable block 70 is located and the plane where the second side surface of the movable block 70 is located.

[0125] In addition, the second pressing plate 30 has a second inclined surface 33, and the second inclined surface 33 can abut against the first inclined surface 71, that is, the second inclined surface 33 can be parallel to the first inclined surface 71. During the movement of the movable block 70 along the second direction, the first inclined surface 71 abuts against the second inclined surface 33, and the movable block 70 can drive the second pressing plate 30 to move along the first direction to approach or move away from the first pressing plate 20. Optionally, the second pressing plate 30 can be a wedge-shaped plate, and when the second pressing plate 30 is cut in a direction perpendicular to the first inclined surface 71, the cross section of the second pressing plate 30 can be roughly wedge-shaped.

[0126] Optionally, the second direction may be as follows Figure 8The first direction may be the left-right direction as shown in the figure, and the first direction may be the up-down direction as shown in the figure. Specifically, the movable block 70 may be disposed on the upper surface of the bottom plate 11, and the movable block 70 may move left-right, the lower surface of the movable block 70 may extend in the horizontal direction, 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, that is, the plane where the first inclined surface 71 is located may form an angle with the horizontal plane where the left-right direction is located, 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 in the horizontal direction.

[0127] 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.

[0128] It should be noted that, in the process of compacting the battery cell 200 by the first pressing plate 20 and the second pressing plate 30, the work done on the battery cell 200 is W. According to the calculation principle of work done, W=F 1 ·S 1 =F 2 ·S 2 , where F 1 is the driving force along the first direction received by the second pressing plate 30 when it moves, S 1 F is the distance that the second pressing plate 30 moves along the first direction, 2 is the driving force along the second direction received by the movable block 70 when it moves, S 2 is the distance that the movable block 70 moves along the second direction. Therefore, when a relatively small force that can drive the movable block 70 to move along the second direction is applied to the movable block 70, the moving distance of the movable block 70 is increased, that is, S 1 The stroke is small, S 2 The larger the stroke, the larger the driving force on the second pressing plate 30 , so that the second pressing plate 30 applies a larger force to the battery cell 200 to meet the pressure and work requirements of the cold pressing of the battery cell 200 .

[0129] Therefore, in this embodiment, by providing a movable block 70 with a first inclined surface 71 and a second pressure plate 30 with a second inclined surface 33, the wedge-shaped structure is driven 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 satisfying the driving force required for the shaping of the battery cell 200, thereby reducing the production cost. 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.

[0130] 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°.

[0131] Specifically, since W = F 1 ·S 1 =F 2 ·S 2 , where S 1 =tanα·S 2 , that is, F 2 =F 1 tanα, when α is between 0.5° and 15°, tanα is about 0.087 to 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 pressing plate 30 moves in the vertical direction, and the driving force F along the second direction on the movable block 70 is 2 Much smaller than the vertical driving force F applied to the second pressing plate 30 1 .

[0132] According to some other embodiments of the utility model, the battery cell shaping device 100 further includes a second lead screw 81 and a third driving member 82. The second lead screw 81 extends along 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 around its own axis to drive the movable block 70 to move along the second direction. The third driving member is provided on the side plate 13, and the third driving member 82 is connected to the second lead screw 81 to drive the second lead screw 81.

[0133] Specifically, the second lead screw 81 and the movable block 70 may be connected by threads. Specifically, the outer peripheral surface of the second lead screw 81 may have external threads, and the movable block 70 may be provided with a threaded hole, and the threaded hole may be provided with an internal thread that matches the external thread of the second lead screw 81. During the rotation of the second lead screw 81 around its own axis, the movable block 70 may move along the second direction, and the movement direction of the movable block 70 may be controlled by controlling the rotation direction of the second lead screw 81. For example, the second lead screw 81 may move along the second direction as shown in FIG. Figure 7 The movable block 70 extends in the left-right direction as shown, and during the rotation of the second lead screw 81 around its own axis, the movable block 70 can move left-right.

[0134] In addition, the second lead screw 81 may be connected to the 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.

[0135] Among them, the movable block 70, the second pressure plate 30 and the second screw 81 are connected together 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 direction into the movement of the second pressure plate 30 in the up and down direction.

[0136] 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 pressure 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.

[0137] 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.

[0138] The structure for driving the movable block 70 to move can be directly installed on the side plate 13. For example, the second lead screw 81 can be rotatably supported on the side plate 13, eliminating the need to provide a bearing seat on the bottom plate 11, which is beneficial to simplifying the structure of the battery cell shaping device 100 and reducing the size of the battery cell shaping device 100.

[0139] In some specific embodiments of the present invention, 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.

[0140] Specifically, the friction force that the movable block 70 is subjected to when it moves relative to the support 10 may be f, and the friction force that the second pressure plate 30 is subjected to when it moves relative to the movable block 70 may be f. At least one of f and f may 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. 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 for driving the movable block 70 to move can be reduced, and the work loss of the movable block 70 can be reduced.

[0141] 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, or 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.

[0142] 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, a first rolling member 73 can be set on the second inclined surface 33, or a first rolling member 73 can 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.

[0143] 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 a rolling friction is formed between the movable block 70 and the support 10, and / or a 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.

[0144] According to some other embodiments of the present invention, the first rolling element 73 is a plane needle roller bearing 73 a , and the plane needle roller bearing 73 a is disposed on at least one of the first inclined surface 71 and the second inclined surface 33 .

[0145] That is to say, a plane needle bearing 73a can be set on the first inclined surface 71, or on the second inclined surface 33, or 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.

[0146] According to some optional embodiments of the utility model, 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.

[0147] 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.

[0148] 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 connected to the first inclined surface 71 respectively, the lower end of the third side surface and the lower end of the fourth side surface may be connected to the lower surface of the movable block 70 respectively, and 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, the roller may rotate around its own axis, and the axis of the roller may extend in the up-down direction. Each groove 72 may correspond to a plurality of rollers respectively, and a plurality of rollers may be provided in each groove 72 spaced apart along the second direction, and when the movable block 70 moves along the second direction, the roller may roll on the bottom surface of the groove 72.

[0149] 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, this is beneficial to reducing the friction force on the movable block 70 when it moves, so as to reduce the driving force required to drive the movable block 70. On the other hand, the movable block 70 can be guided to move along the second direction through the groove 72, so as to improve the stability of the movable block 70 when it moves.

[0150] 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.

[0151] In some specific embodiments of the present invention, the second pressing plate 30 has a bearing surface on one side facing the first pressing plate 20, and 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 bearing surface. The conveying assembly 92 is connected to the connecting block 91, and at least a portion of the conveying assembly 92 is located between the first pressing plate 20 and the second pressing plate 30 to convey the battery cell 200.

[0152] Specifically, the conveying assembly 92 and the connecting block 91 may be disposed between the first pressing plate 20 and the second pressing plate 30 , wherein the connecting block 91 may be directly connected to the bearing surface of the second pressing plate 30 , and the conveying assembly 92 may be carried on the connecting block 91 .

[0153] At least a portion of the conveying component 92 is movable to convey the battery cell 200 along the third direction. For example, the conveying component 92 may be a conveyor belt.

[0154] 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, the conveying component 92 can convey the battery cell 200 in the horizontal direction, and when the second pressing plate 30 moves 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.

[0155] 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 .

[0156] In this embodiment, a conveyor is provided to convey the battery cells 200 , so as to 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 .

[0157] The embodiment of the utility model further provides a winding machine, which includes the battery cell shaping device 100 according to any of the above embodiments. Since the battery cell shaping device 100 according to the embodiment of the present invention has the above technical effects, the winding machine according to the embodiment of the utility model also has corresponding technical effects, that is, it has the advantages of simple and compact structure, and the reaction force during battery cell shaping can be dispersed through the support 10, which is conducive to improving the strength and reliability of the battery cell shaping device 100.

[0158] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A battery cell shaping device, characterized in that: include: Support; a first pressing plate, the first pressing plate being 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 battery 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: The side plate is provided with a hollow portion, 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 disposed 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 comprises: A first screw, the first screw extending along the first direction and being threadedly connected to the first pressing plate, the first screw being rotatable around 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 the first guide members are disposed on a side surface of each of the side plates 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 connects the two side plates, the support plate is located between the bottom plate and the top plate, a locking portion is provided on the first pressing plate, and the battery cell shaping device further includes: A limiting member, the limiting member is arranged on the supporting plate, and the limiting member is 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, wherein the second driving member is disposed 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 comprises 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.

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 part 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, wherein the guide seat is detachably arranged on the mounting hole, a guide hole is provided on the guide seat, the guide rod is movably arranged in the guide hole along the guide hole, and the second driving member is arranged on the guide seat; At least one pad is detachably disposed in 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 a plane where the first inclined surface is located and a 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 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 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 arranged 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 one 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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