Electrode assembly shaping method and device

Abstract

The invention relates to an electrode assembly shaping method and device. The electrode assembly shaping method comprises the steps that a clamping module of the electrode assembly shaping device is controlled to clamp an electrode assembly, and the electrode assembly is transferred to a vibration platform of the electrode assembly shaping device; the vibration platform is controlled to be adjusted to an inclined posture, so that the electrode assembly moves to a shaping area of the vibration platform; and controlling the vibration platform to vibrate, so that the laminated pole pieces are aligned in the shaping area. According to the invention, the alignment degree of the laminated pole pieces in the electrode assembly can be improved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a method and device for shaping an electrode assembly. Background Art

[0002] With the continuous development of battery technology, the requirements for battery performance are increasing day by day. Laminated batteries are becoming more and more widely used due to their high energy density and other reasons.

[0003] Generally, the laminated cells in the laminated battery are made by stacking the pole pieces together in the same size using a lamination process. In the related art, when making a laminated cell, the pole pieces are first stacked to obtain an electrode assembly, and then the electrode assembly is hot pressed to obtain a laminated cell.

[0004] However, the alignment of the stacked pole pieces in the electrode assembly manufactured in the related art cannot meet the alignment requirements, resulting in a significant impact on the performance of the laminated battery cell made by the electrode assembly. Summary of the invention

[0005] Based on this, the present application provides an electrode assembly shaping method and device, which can improve the alignment of stacked pole pieces in the electrode assembly.

[0006] In a first aspect, the present application provides an electrode assembly shaping method, wherein the electrode assembly includes stacked pole pieces, and the electrode assembly shaping method includes: controlling a clamping module of an electrode assembly shaping device to clamp the electrode assembly and move the electrode assembly to a vibration platform of the electrode assembly shaping device; controlling the vibration platform to adjust to an inclined posture so that the electrode assembly moves to a shaping area of ​​the vibration platform; and controlling the vibration platform to vibrate so that the stacked pole pieces are aligned within the shaping area.

[0007] In the technical solution of the embodiment of the present application, when the electrode assembly is placed on a vibration platform, the vibration platform is first controlled to be adjusted to an inclined posture. The vibration platform in the inclined posture guides the movement of the electrode assembly according to its own gravity, so that the electrode assembly moves to the shaping area along a designed path under the action of its own gravity. By controlling the vibration of the vibration platform, the stacked pole pieces in the electrode assembly can adjust their own positions, and through the action of the shaping area, the stacked pole pieces are aligned within the shaping area, thereby improving the alignment of the stacked pole pieces in the electrode assembly, thereby reducing the impact on the performance of the laminated battery cell made by the electrode assembly.

[0008] In some embodiments, controlling the vibration platform to adjust to an inclined posture includes: controlling the vibration platform to rotate the vibration platform upward with a preset rotation axis as the center; the preset rotation axis is the rotation axis connecting the vibration platform and the base of the electrode assembly shaping device; when the vibration platform rotates to a position where the angle between the vibration platform and the base is a preset angle, determining that the vibration platform is adjusted to an inclined posture, and controlling the vibration platform to maintain a position where the angle between the vibration platform and the base is a preset angle. In the technical solution of the embodiment of the present application, the change of the angle between the vibration platform and the base can be used to adjust the posture of the control platform, and when the angle between the vibration platform and the base is a preset angle, the battery cell moves to the shaping area according to the designed path under the action of its own gravity, so that the electrode assembly can be pushed to move without relying on a mechanical pushing mechanism to apply a driving force to the electrode assembly. Not only does it reduce the manufacturing cost of the electrode assembly shaping device because there is no need to set a mechanical pushing mechanism for pushing the electrode assembly, it can also avoid the situation where the mechanical pushing mechanism provides a large inference to the electrode assembly to move the electrode assembly, thereby causing damage to the electrode assembly, thereby improving the reliability of the electrode assembly.

[0009] In some embodiments, controlling the vibration platform to vibrate so that the stacked pole pieces are aligned through the shaping area includes: controlling the vibration platform to vibrate, and controlling the first push block in the electrode assembly shaping device to abut against the first side of the electrode assembly, and controlling the second push block in the electrode assembly shaping device to abut against the second side of the electrode assembly, so as to limit the first side and the second side of the electrode assembly, the first side and the second side are adjacent, so that the stacked pole pieces are aligned through the shaping area and the limiting of the first side and the second side. In the technical solution of the embodiment of the present application, in the process of controlling the vibration platform to vibrate, the first push block in the electrode assembly shaping device is also controlled to abut against the first side of the electrode assembly, and the second push block in the electrode assembly shaping device is controlled to abut against the second side of the electrode assembly, so that the electrode assembly is pushed by the first push block and the second push block, so that the stacked pole pieces in the electrode assembly can be accelerated according to their own gravity and the limiting effect of the shaping area, the effect of adjusting the position of the stacked pole pieces by vibration, and the limiting effect of the first push block and the second push block, thereby improving the alignment efficiency of the stacked pole pieces in the electrode assembly.

[0010] In some embodiments, the method further includes: controlling the vibration platform to stop vibrating, and controlling the vibration platform to adjust to a default posture; the default posture is the posture of the vibration platform in a horizontal position; controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly. In the technical solution of the embodiment of the present application, when the posture of the vibration platform is controlled to change from an inclined posture to a default posture, glue is stuck to the side of the electrode assembly, so that the electrode assembly on the vibration platform is placed horizontally, and there is no need to adjust the original glue sticking position of the glue sticking module, which is conducive to the glue sticking and improves the convenience of glue sticking.

[0011] In some embodiments, controlling the vibration platform to adjust to the default posture includes: controlling the pressing block of the electrode assembly shaping device to press the electrode assembly on the vibration platform; controlling the vibration platform to change from the tilted posture to the default posture, and in the process of the vibration platform changing from the tilted posture to the default posture, controlling the pressing block to continuously press the electrode assembly on the vibration platform. In the technical solution of the embodiment of the present application, in the process of the vibration platform changing from the tilted posture to the default posture, and in the process of the glue sticking module sticking glue to the side of the electrode assembly, the pressing block is controlled to continuously press the electrode assembly on the vibration platform, so that after the stacked pole pieces in the electrode assembly are aligned, the position of the electrode assembly is fixed, avoiding the situation in which the electrode assembly is loosely deformed during the movement and glue sticking process, resulting in a decrease in the alignment of the stacked pole pieces in the electrode assembly, thereby further improving the alignment of the stacked pole pieces in the electrode assembly.

[0012] In some embodiments, controlling the vibration platform to change from an inclined posture to a default posture includes: controlling the vibration platform to rotate downward with a preset rotation axis as the center; the preset rotation axis is the rotation axis connecting the vibration platform and the base of the electrode assembly shaping device; when the vibration platform is rotated to a position where it is placed horizontally on the base, determining that the vibration platform is adjusted to the default posture, and controlling the vibration platform to maintain a position where it is placed horizontally on the base. In the technical solution of the embodiment of the present application, the vibration platform is controlled to rotate downward with a preset rotation axis as the center to a position where the vibration platform is placed on the base, so that the posture of the vibration platform changes from an inclined posture to a default posture, so that the base can provide stable support for the vibration platform, thereby improving the reliability of the electrode assembly shaping device.

[0013] In some embodiments, controlling a pressing block of an electrode assembly shaping device to press an electrode assembly on a vibration platform comprises: controlling the pressing block to rotate downward with a target rotation axis as the center to a position where the pressing block presses the electrode assembly; the target rotation axis is the rotation axis connecting the pressing block with a base of the electrode assembly shaping device, and the target rotation axis is parallel to a preset rotation axis connecting the vibration platform with the base; controlling the pressing block to continuously press the electrode assembly on the vibration platform comprises: controlling the pressing block to rotate downward with a target angular velocity with the target rotation axis as the center, the target angular velocity being the same as the angular velocity of the downward rotation of the vibration platform, so that the pressing block continuously presses the electrode assembly. In the technical solution of the embodiment of the present application, the target rotation axis connecting the pressing block and the base is parallel to the preset rotation axis connecting the vibration platform and the base, and after the pressing block presses the electrode assembly, the target angular velocity of the pressing block's downward rotation is the same as the angular velocity of the vibration platform's downward rotation, so that the position change of the pressing block is synchronized with the position change of the vibration platform, thereby ensuring that the pressing block continuously presses the electrode assembly during the process of the vibration platform's posture changing from an inclined posture to a default posture, avoiding the situation where the position change of the pressing block is not synchronized with the position change of the vibration platform, resulting in the pressing block being unable to continuously press the electrode assembly, thereby reducing the alignment of the stacked pole pieces in the electrode assembly, thereby the embodiment of the present application can further improve the alignment of the stacked pole pieces in the electrode assembly.

[0014] In some embodiments, after the glue sticking module in the electrode assembly shaping device is controlled to stick glue to the side of the electrode assembly, the method further includes: controlling the pressing block to rotate upward to the initial position with the target rotation axis as the center; wherein the angle between the pressing block and the base at the initial position is the target angle, and the target angle is greater than the preset angle between the vibration platform and the base when the vibration platform is in an inclined posture. In the technical solution of the embodiment of the present application, after sticking glue to the side of the electrode assembly, the pressing block is controlled to return to the initial position to facilitate the pressing of the pressing block on the electrode assembly during the next shaping process of the electrode assembly, thereby improving the continuity of the shaping of the electrode assembly, and when the pressing block is in the initial position, the pressing block will not block the electrode assembly, which is conducive to detecting the alignment of the stacked pole pieces in the electrode assembly.

[0015] In some embodiments, controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly includes: sending a shooting instruction to the camera module in the electrode assembly shaping device; obtaining a target image obtained by the camera module shooting the electrode assembly in response to the shooting instruction; and controlling the glue sticking module to stick glue to the side of the electrode assembly when performing image analysis on the target image and determining that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements. In the technical solution of the embodiment of the present application, glue is applied to the side of the electrode assembly only when it is determined that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements by shooting the target image of the electrode assembly, which effectively prevents the side of the electrode assembly from being glued when the alignment of the stacked pole pieces in the electrode assembly does not meet the alignment requirements, resulting in the stacked battery made according to the electrode assembly having the stacked pole pieces that cannot meet the alignment requirements. Therefore, the embodiment of the present application can improve the performance of the stacked battery.

[0016] In some embodiments, after the glue sticking module in the electrode assembly shaping device is controlled to apply glue to the side of the electrode assembly, the method further includes: controlling the clamping module to clamp the glued electrode assembly to the transfer mechanism of the hot press table, so as to perform hot pressing on the glued electrode assembly through the hot press table. In the technical solution of the embodiment of the present application, the glued electrode assembly is clamped to the transfer mechanism of the hot press table by the clamping module in the electrode assembly shaping device, thereby avoiding disconnection and stagnation between production processes and ensuring the continuity of the production process.

[0017] In the second aspect, the present application provides an electrode assembly shaping device, the electrode assembly includes stacked pole pieces, and the electrode assembly shaping device includes: a clamping module, a vibration platform and a control component, the clamping module and the vibration platform are connected to the control component; a plurality of limit blocks are provided on the surface of the vibration platform, and the plurality of limit blocks mark the shaping area on the surface of the vibration platform; the control component is used to send a clamping instruction to the clamping module, and the clamping module is used to respond to the clamping instruction, clamp the electrode assembly and move the electrode assembly to the vibration platform; the control component is also used to control the vibration platform to adjust to an inclined posture, so that the electrode assembly moves to the shaping area in the vibration platform; the control component is also used to control the vibration of the vibration platform, so that the stacked pole pieces are aligned by the limiting of the plurality of limit blocks. In the technical solution of the embodiment of the present application, the shaping area is marked on the surface of the vibration platform by a plurality of limit blocks, so that when the electrode assembly moves to the shaping area in the vibration platform, the stacked pole pieces can be aligned in the shaping area by the limiting action of the plurality of limit blocks, thereby improving the alignment of the stacked pole pieces in the electrode assembly.

[0018] In some embodiments, the plurality of limit blocks include a first limit block and a second limit block, the first limit block marks the first side of the shaping area, the second limit block marks the second side of the shaping area, and the first side is adjacent to the second side. In the technical solution of the embodiment of the present application, the first limit block and the second limit block can limit two adjacent side surfaces in the electrode assembly, and when the alignment of the two adjacent side surfaces in the electrode assembly meets the requirements, the alignment of the stacked pole pieces in the electrode assembly also meets the requirements, so that only the first limit block and the second limit block need to be provided to achieve the limitation of the electrode assembly, which can not only simplify the structure of the electrode assembly shaping device and reduce the manufacturing cost of the electrode assembly shaping device, but also can adapt to electrode assemblies of various sizes, thereby improving the adaptability of the electrode assembly shaping device.

[0019] In some embodiments, the electrode assembly shaping device also includes a base; the control component includes a controller and an angle adjuster connected to the controller, and the angle adjuster is also connected to a vibration platform; the vibration platform is on the base, and the vibration platform and the base are connected by a preset rotating shaft; the projection of the preset rotating shaft on the plane where the shaping area is located has a first angle with the first side edge that is an acute angle, and a second angle with the second side edge that is an acute angle; the controller is also used to send a rotation instruction to the angle adjuster; the angle adjuster is used to respond to the rotation instruction and drive the vibration platform to rotate upward with the preset rotating shaft as the center to a position with a preset angle with the base; the controller is also used to send a return instruction to the angle adjuster; the angle adjuster is used to respond to the return instruction and drive the vibration platform to rotate downward with the preset rotating shaft as the center to a position where the vibration platform is horizontally placed on the base. In the technical solution of the embodiment of the present application, the projection of the preset rotating shaft on the plane where the shaping area is located has a first angle with the first side edge that is an acute angle, and a second angle with the second side edge that is an acute angle. In this way, when the vibration platform is rotated upward, the electrode assembly on the vibration platform can move toward the shaping area between the first limit block and the second limit block, and through a single rotation operation, the first limit block and the second limit block can be pressed against two adjacent side surfaces of the electrode assembly, thereby achieving alignment of the two adjacent side surfaces of the electrode assembly and improving the shaping efficiency of the electrode assembly.

[0020] In some embodiments, the first angle is the same as the second angle. In the technical solution of the embodiment of the present application, the magnitude of the supporting force provided by the first limit block to the electrode assembly is the same as the magnitude of the supporting force provided by the second limit block to the electrode assembly, so that the magnitude of the supporting force on the two adjacent side surfaces of the electrode assembly is the same, avoiding the situation where the electrode assembly is locally deformed due to uneven force, thereby improving the reliability of the electrode assembly.

[0021] In some embodiments, the vibration platform includes a storage platform and a vibrator connected to the storage platform; the control component is also used to send a vibration instruction to the vibrator when the vibration platform is adjusted to a tilted posture; the vibrator is used to vibrate for a target duration in response to the vibration instruction, so that the vibration platform vibrates for the target duration. In the technical solution of the embodiment of the present application, the vibration of the vibration platform is controlled by controlling the vibration of the vibrator by the controller, so that the controller can flexibly control the vibration of the vibrator according to the requirements of the vibration type and vibration duration, thereby improving the flexibility of vibration control.

[0022] In some embodiments, the control component includes a controller and a pusher connected to the controller; the electrode assembly shaping device also includes a first push block and a second push block connected to the pusher; the controller is used to send a push instruction to the pusher when the vibration platform is adjusted to a tilted posture; the pusher is used to push the first push block to abut the first side of the electrode assembly and push the second push block to abut the second side of the electrode assembly in response to the push instruction; wherein the first side and the second side are adjacent, and the first side and the second side are different from the side of the electrode assembly abutted by the limit block; the controller is also used to send a reset instruction to the pusher when the vibration platform stops vibrating; the pusher is used to drive the first push block to withdraw from the abutment with the first side of the electrode assembly and drive the second push block to withdraw from the abutment with the first side of the electrode assembly in response to the reset instruction.

[0023] In some embodiments, the electrode assembly shaping device also includes a gluing module connected to the control component; the control component is also used to control the vibration platform to adjust to a default posture; the default posture is the posture in which the vibration platform is in a horizontal position; the control component is also used to send a gluing instruction to the gluing module; the gluing module is used to apply glue to the side of the electrode assembly in response to the gluing instruction.

[0024] In some embodiments, the electrode assembly shaping device also includes a base; the control component includes a pressing block, a controller and a pressing regulator connected to the controller, and the pressing regulator is also connected to the pressing block; the pressing block is on the vibration platform, and the pressing block and the base are connected through a target rotating shaft; the controller is used to send a pressing instruction to the pressing regulator when the vibration platform stops vibrating; the pressing regulator is used to respond to the pressing instruction and drive the pressing block to rotate downward with the target rotating shaft as the center to the position where the pressing block presses the electrode assembly; the controller is also used to send a holding instruction to the pressing regulator; the pressing regulator is used to respond to the holding instruction and drive the pressing block to continuously press the electrode assembly during the process of the vibration platform changing from an inclined posture to a default posture; the controller is also used to send a release instruction to the pressing regulator when the glue application to the electrode assembly is completed; the pressing regulator is used to respond to the release instruction and drive the pressing block to rotate upward to an initial position with the target rotating shaft as the center; wherein the initial position is that the angle between the pressing block and the base is the target angle, and the target angle is greater than the preset angle between the vibration platform and the base when the vibration platform is in an inclined posture.

[0025] In some embodiments, the electrode assembly shaping device also includes a camera module connected to the control component; the control component is also used to send shooting instructions to the camera module; the camera module is used to photograph the electrode assembly in response to the shooting instructions, and send the captured target image to the control component; the control component is also used to perform image analysis on the target image to determine whether the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements.

[0026] In some embodiments, the control component is also used to send a clamping instruction to the clamping module; the clamping module is used to respond to the clamping instruction to clamp the glued electrode assembly to the transfer mechanism of the hot pressing table to hot press the glued electrode assembly through the hot pressing table. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a production process of a laminated electrode assembly provided for some embodiments;

[0029] Figure 2 A schematic diagram of a production process of a laminated electrode assembly provided for other embodiments;

[0030] Figure 3 A schematic flow chart of the electrode assembly shaping method provided in the first embodiment;

[0031] Figure 4 A schematic flow chart of an electrode assembly shaping method provided in a second embodiment;

[0032] Figure 5 A schematic flow chart of an electrode assembly shaping method provided in a third embodiment;

[0033] Figure 6 A schematic flow chart of an electrode assembly shaping method provided in a fourth embodiment;

[0034] Figure 7 A schematic flow chart of an electrode assembly shaping method provided in a fifth embodiment;

[0035] Figure 8 A schematic flow chart of an electrode assembly shaping method provided in a sixth embodiment;

[0036] Fig. 9 A schematic diagram of the structure of an electrode assembly shaping device provided in some embodiments;

[0037] Fig.10 A schematic top view of a shaping assembly in an electrode assembly shaping device provided in some embodiments;

[0038] Fig.11 A schematic front view of a vibration platform in a shaping assembly provided in some embodiments in a default posture;

[0039] Fig.12 A right side schematic diagram of a vibration platform in a shaping assembly provided in some embodiments in a default posture;

[0040] Fig.13 A schematic front view of a vibration platform in a shaping assembly provided in some embodiments in a tilted posture;

[0041] Fig.14 A right side schematic diagram of a vibration platform in a shaping assembly provided in some embodiments in a tilted posture;

[0042] Fig.15 A schematic diagram of the structure of an electrode assembly shaping device provided in some other embodiments;

[0043] Fig.16 A schematic top view of a shaping assembly in an electrode assembly shaping device provided in some other embodiments;

[0044] Fig.17 A schematic front view of a vibration platform in a shaping assembly in some other embodiments in a tilted posture;

[0045] Fig.18 A process diagram of online vibration shaping provided for some embodiments;

[0046] Fig.19 A schematic diagram of a process for online vibration shaping of an electrode assembly is provided for some embodiments.

[0047] The reference numerals in the specific implementation manner are as follows:

[0048] 100. electrode assembly shaping device; 200. electrode assembly;

[0049] 110, shaping component; 120, control component; 130, clamping module; 140, gluing module; 150, camera module;

[0050] 111, vibration platform; 112, limit block; 113, base; 114, preset rotating shaft; 115, first push block; 116, second push block; 117, pressing block; 1111, storage table; 1112, vibrator;

[0051] 1201, controller; 1202, angle adjuster; 1203, pusher; 1204, pressure adjuster. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0054] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] In the production of laminated battery cells, the positive electrode sheet, the negative electrode sheet and the separator are first compounded to form a composite material strip, and then the composite material strip is folded to obtain an electrode assembly, and then the electrode assembly is fixed with side glue, and then the electrode assembly is transferred to a hot pressing table by means of clamps and transfer belts to perform hot pressing and compounding on the electrode assembly to obtain a laminated battery cell, and then the laminated battery cell is loaded into a shell to obtain a laminated battery.

[0060] However, the electrode assembly obtained by folding the composite strip has the problem of low alignment of the stacked pole pieces, so the size of the laminated battery obtained by hot pressing the electrode assembly is large, and a larger shell is required to load the laminated battery, so the energy density of the obtained laminated battery is low. Therefore, since the alignment of the stacked pole pieces in the laminated battery cannot meet the alignment requirements, it will have a significant impact on the performance of the laminated battery.

[0061] To alleviate the above problems, research has found that if the stacked pole pieces in the electrode assembly are shaped before the side glue of the electrode assembly is fixed to improve the alignment of the stacked pole pieces in the electrode assembly, the size of the stacked battery cell can be reduced, the size of the shell for housing the stacked battery cell can be reduced, and the energy density of the laminated battery can be improved.

[0062] Based on the above considerations, in order to solve the problem that the alignment of the stacked pole pieces in the electrode assembly cannot meet the alignment requirements, a shaping method for the electrode assembly is designed. The electrode assembly includes stacked pole pieces. The shaping method for the electrode assembly includes: controlling the clamping module of the electrode assembly shaping device to clamp the electrode assembly, and transferring the electrode assembly to the vibration platform of the electrode assembly shaping device; controlling the vibration platform to adjust to an inclined posture so that the electrode assembly moves to the shaping area of ​​the vibration platform; controlling the vibration platform to vibrate so that the stacked pole pieces are aligned in the shaping area. In this way, when the electrode assembly is placed on the vibration platform, the vibration platform is first controlled to adjust to an inclined posture. The inclined vibration platform allows the electrode assembly to guide the movement of the electrode assembly according to its own gravity, so that the electrode assembly moves to the shaping area according to the designed path under the action of its own gravity, and by controlling the vibration of the vibration platform, the stacked pole pieces in the electrode assembly can adjust their own positions, and through the action of the shaping area, the stacked pole pieces are aligned in the shaping area, thereby improving the alignment of the stacked pole pieces in the electrode assembly, thereby reducing the impact on the performance of the laminated battery cell made by the electrode assembly.

[0063] Illustratively, the electrode assembly shaping method and the electrode assembly shaping device in the embodiments of the present application can be applied to a production line of laminated battery cells and used after the electrode sheets are folded and before hot pressing.

[0064] Figure 1 A schematic diagram of a production process of a laminated battery cell provided in some embodiments, such as Figure 1 As shown, the positive electrode sheet and the negative electrode sheet are placed on the diaphragm and compounded to obtain a composite material strip, and then the composite material strip is freely Z-stacked to obtain an electrode assembly, and then the electrode assembly is pre-pressed and glued to obtain a glued electrode assembly, and finally the glued electrode assembly is hot-pressed to obtain a laminated battery cell.

[0065] Figure 2 Schematic diagram of the production process of laminated battery cells provided in other embodiments, such as Figure 2 As shown, Figure 2 Example compared to Figure 1 The difference between the embodiments is that a vibration shaping step is performed between the free Z stacking and the pre-pressing adhesive, and the vibration shaping step is achieved by the electrode assembly shaping method and electrode assembly shaping device provided in the embodiments of the present application. In this way, by providing a new process flow and device, compared with Figure 1In the manufacturing process, an electrode assembly shaping step is added before the electrode assembly is pre-pressed and glued, and the overall alignment of the electrode assembly is improved by vibration shaping, which can effectively avoid the problem of poor quality of the electrode assembly due to the alignment exceeding the specification and the inability to rework. Exemplarily, the electrode assembly shaping can include online shaping of the electrode assembly, which refers to controlling the relevant components of the shaping assembly in the electrode assembly shaping device through the control assembly to shape the electrode assembly placed in the electrode assembly shaping device.

[0066] Figure 3 A schematic diagram of a process flow of an electrode assembly shaping method provided in the first embodiment, as shown in FIG. Figure 3 As shown, the method is applied to a control component in an electrode component shaping device, and the method comprises:

[0067] S301, controlling the clamping module of the electrode assembly shaping device to clamp the electrode assembly, and transferring the electrode assembly to the vibration platform of the electrode assembly shaping device.

[0068] In some embodiments, the control component may include a controller and a power device for controlling the state of relevant components in the shaping component in the electrode assembly shaping device. For example, the power device may include at least one of the following: an angle adjuster, a pusher, a pressure adjuster, etc.

[0069] Exemplarily, the electrode assembly may be an electrode assembly completed by free Z stacking. Also exemplary, the electrode assembly may be an electrode assembly completed by folding in other ways. For example, the folding in other ways is layered folding, etc.

[0070] The following describes an example of a trigger condition for controlling the electrode assembly to be moved to the vibration platform: For example, the control component can control the electrode assembly to be moved to the vibration platform in response to a completion instruction of the electrode assembly shaping process. For another example, the shaping process of different electrode assemblies takes the same time, and the control component can control the electrode assembly to be moved to the vibration platform at specified intervals. For another example, the electrode assembly shaping device may include a mechanical trigger module, and when the mechanical trigger module is triggered, the electrode assembly is controlled to be moved to the vibration platform.

[0071] In some embodiments, four sides of the electrode assembly are placed perpendicular to the vibration platform.

[0072] Exemplarily, the clamping module may include a loading clamp that controls the loading clamp in the clamping module in the electrode assembly shaping device to clamp the electrode assembly and move the electrode assembly to the vibration platform of the electrode assembly shaping device.

[0073] Exemplarily, the clamping module can be controlled to clamp the electrode assembly from the stacking table. The stacking table can be an operating table for folding the electrode sheets. Also exemplarily, the clamping module can be controlled to clamp the electrode assembly on the transportation line of the electrode assembly.

[0074] In some embodiments, the clamping module can be controlled to move from a preset position to a position corresponding to the electrode assembly on the stacking platform, the clamping module's jaws can be controlled to open, and after adjusting the position of the clamping module, the clamping module's jaws can be controlled to close so that the clamping module clamps the electrode assembly. The clamping module is then controlled to move to the vibration platform, the jaws are released, and the position of the clamping module is controlled to return to the preset position, thereby achieving the transfer of the electrode assembly to the vibration platform.

[0075] In some embodiments, the clamping module can place the electrode assembly in any area on the vibration platform. Exemplarily, the electrode assembly can be placed close to the shaping area. The shaping area has a first side and a second side adjacent to each other, and the first side and the second side are used to limit two adjacent sides of the electrode assembly. Exemplarily, the shape of the shaping area can be a rectangle, and the size of the shaping area can be greater than or equal to (for example, slightly greater than) the size of a pole piece in the electrode assembly. For example, the shaping area is a rectangle with a first length and a first width, the first length is greater than the length of a pole piece in the electrode assembly, and the first width is greater than the width of a pole piece in the electrode assembly.

[0076] In some embodiments, when the electrode assembly is transferred to the vibration platform of the electrode assembly shaping device, the distance between the electrode assembly and the first side of the shaping area is less than or equal to a preset threshold, and the distance between the electrode assembly and the second side of the shaping area is less than or equal to the preset threshold. In this way, in the process of moving the electrode assembly to the shaping area, the distance moved by the electrode assembly is shorter, and the force applied to the electrode assembly by the first side and the second side of the shaping area is also smaller, thereby minimizing the damage caused to the electrode assembly by the shaping area during the shaping process.

[0077] S302, controlling the vibration platform to adjust to an inclined posture, so that the electrode assembly moves to a shaping area of ​​the vibration platform.

[0078] In some embodiments, the shaping area is calibrated by a plurality of limit blocks provided on the surface of the vibration platform, and is used to align the stacked pole pieces in the electrode assembly. Exemplarily, the shaping area may be a calibrated area, and the shaping area has a first side and a second side adjacent to each other, and the first side and the second side are adjacent to each other. Exemplarily, the shaping area may be a rectangle or other shapes, and the size of the shaping area may be greater than or equal to the size of the electrode assembly. Exemplarily, the size of the shaping area is not fixed, and the size of the shaping area may be flexibly determined according to the size of the electrode assembly. When the electrode assembly reaches the first side and the second side of the shaping area, the electrode assembly moves to the shaping area of ​​the vibration platform.

[0079] In some embodiments, the shaping area is calibrated by a first limit block and a second limit block set on the surface of the vibration platform, the first limit block calibrates the first side of the shaping area, the second limit block calibrates the second side of the shaping area, and the first side and the second side are adjacent. For example, the first limit block is outside the shaping area, and one side of the first limit block is flush with the first side of the shaping area, and the second limit block is outside the shaping area, and one side of the second limit block is flush with the second side of the shaping area. In some embodiments, the first limit block can be a limit block, or it can be a combination of multiple limit blocks. In some embodiments, the second limit block can be a limit block, or it can be a combination of multiple limit blocks.

[0080] In some embodiments, controlling the vibration platform to adjust to the tilted posture may include controlling the posture of the vibration platform to change from a default state to a tilted posture. In some embodiments, the control component may control the posture of the vibration platform to switch between the default posture and the tilted posture. Exemplarily, when the posture of the vibration platform is the default posture, the electrode assembly is placed on the vibration platform, and when the posture of the vibration platform is the tilted posture, the tilt of the vibration platform drives the electrode assembly to tilt, so that the electrode assembly moves to the shaping area in the vibration platform according to its own gravity.

[0081] In some embodiments, when the electrode assembly is moved to the shaping area in the vibration platform, the stacked pole pieces in the electrode assembly are aligned through the limiting action of the limit block, or in other words, the alignment degree of the stacked pole pieces in the electrode assembly meets the alignment requirement.

[0082] S303, controlling the vibration platform to vibrate so that the stacked pole pieces are aligned in the shaping area.

[0083] In some embodiments, the vibration of the vibration platform may be online vibration, where the online vibration means that a control mechanism controls the vibration of the vibration platform.

[0084] In some embodiments, controlling the vibration of the vibration platform may include: controlling the vibration platform to vibrate for a preset duration, and after the preset duration, determining that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements. In some embodiments, the control component may also control the vibration direction and / or vibration frequency of the vibration platform. Exemplarily, the vibration direction may be a direction parallel to the vibration platform. Exemplarily, the vibration direction may be at least one of the following: a direction perpendicular to the first side, a direction perpendicular to the second side, and a direction parallel to the bisector of the angle corresponding to the first side and the second side.

[0085] In some embodiments, the vibration platform may include a placement table and a vibrator connected to the placement table, and the control component may control the vibration of the vibration platform by controlling the vibration of the vibrator.

[0086] In the technical solution of the embodiment of the present application, when the electrode assembly is placed on a vibration platform, the vibration platform is first controlled to be adjusted to an inclined posture. The vibration platform in the inclined posture guides the movement of the electrode assembly according to its own gravity, so that the electrode assembly moves to the shaping area along a designed path under the action of its own gravity. By controlling the vibration of the vibration platform, the stacked pole pieces in the electrode assembly can adjust their own positions, and through the action of the shaping area, the stacked pole pieces are aligned within the shaping area, thereby improving the alignment of the stacked pole pieces in the electrode assembly, thereby reducing the impact on the performance of the laminated battery cell made by the electrode assembly.

[0087] Figure 4 A schematic diagram of a flow chart of an electrode assembly shaping method provided in the second embodiment, as shown in FIG. Figure 4 As shown, the method is applied to the control component in the electrode component shaping device, Figure 4 Example compared to Figure 3 The difference between the embodiments is that S302 may include S3021 and S3022:

[0088] S3021. Control the vibration platform to rotate upward around a preset rotation axis; the preset rotation axis is the rotation axis connecting the vibration platform and the base of the electrode assembly shaping device.

[0089] In some embodiments, the electrode assembly shaping device also includes a base; a vibration platform is on the base, and the vibration platform and the base are connected by a preset rotating shaft; the projection of the preset rotating shaft on the plane where the shaping area is located has an acute angle with the first side edge, and has an acute angle with the second side edge.

[0090] In some embodiments, the control component includes a controller and an angle adjuster connected to the controller, and the controller is also used to send a rotation instruction to the angle adjuster; the angle adjuster is used to respond to the rotation instruction to drive the vibration platform to rotate upward with a preset rotation axis as the center to a position with a preset angle between it and the base.

[0091] In some embodiments, rotating the vibration platform upward may include: the control component controlling an end of the vibration platform opposite to the preset rotation axis to gradually move away from the base.

[0092] S3022: When the vibration platform rotates to a position where the angle between the vibration platform and the base is a preset angle, determine that the vibration platform is adjusted to a tilted posture, and control the vibration platform to maintain a position where the angle between the vibration platform and the base is the preset angle.

[0093] In this way, the vibration platform is controlled to maintain a position where the angle between the vibration platform and the base is a preset angle, so that the posture of the vibration platform is maintained in an inclined posture.

[0094] In some embodiments, the preset angle may be a fixed angle. Exemplarily, the preset angle may be in the range of 30 to 80 degrees. For example, the preset angle may be in the range of 35 to 75 degrees. For example, the preset angle may be 30, 45, 60, or 80 degrees, etc.

[0095] In the technical solution of the embodiment of the present application, the change of the angle between the vibration platform and the base can be used to adjust the posture of the control platform, and when the angle between the vibration platform and the base is a preset angle, the battery cell moves to the shaping area along a designed path under the action of its own gravity, thereby pushing the electrode assembly to move without relying on a mechanical pushing mechanism to apply a driving force to the electrode assembly. Not only does it reduce the manufacturing cost of the electrode assembly shaping device because there is no need to set up a mechanical pushing mechanism for pushing the electrode assembly, it can also avoid the situation where the mechanical pushing mechanism provides a large force on the electrode assembly to cause the electrode assembly to move, thereby causing damage to the electrode assembly. Therefore, the reliability of the electrode assembly can be improved.

[0096] Figure 5 A schematic diagram of a process flow of an electrode assembly shaping method provided in the third embodiment, as shown in FIG. Figure 5 As shown, the method is applied to the control component in the electrode component shaping device, Figure 5 Example compared to Figure 3 The difference between the embodiments is that S303 includes S3031:

[0097] S3031. Control the vibration platform to vibrate, and control the first push block in the electrode assembly shaping device to abut against the first side of the electrode assembly, and control the second push block in the electrode assembly shaping device to abut against the second side of the electrode assembly, so as to limit the first side and the second side of the electrode assembly.

[0098] The first side surface and the second side surface are adjacent to each other, so that the stacked pole pieces are aligned through the shaping area and the limiting of the first side surface and the second side surface. The first side surface and the second side surface are different from the side surfaces of the electrode assembly abutted by the limiting block.

[0099] In this way, the first pushing block abuts the first side surface of the electrode assembly, the second pushing block abuts the second side surface of the electrode assembly, the first limiting block abuts the third side surface of the electrode assembly, and the second limiting block abuts the fourth side surface of the electrode assembly. The first side surface is adjacent to the second side surface, and the third side surface is adjacent to the fourth side surface. In this way, through the limiting action of the first pushing block, the second pushing block, the first limiting block and the second limiting block, the four sides of the electrode assembly can be limited, thereby accelerating the alignment efficiency of the stacked electrode sheets. For example, the stacked pole pieces include 10 stacked pole pieces, and the positions of the second pole piece and the fifth pole piece are offset toward the first side surface and the second side surface, respectively. If the first push block and the second push block do not exist, only the first limit member and the second limit member limit the third side surface and the fourth side surface of the electrode assembly, respectively, which will cause the alignment speed of the second pole piece and the fifth pole piece to be slow. However, by providing the first push block and the third push block, not only the first limit member and the second limit member limit the third side surface and the fourth side surface of the electrode assembly, respectively, but also the first push block and the second push block limit the first side surface and the second side surface of the electrode assembly, respectively, so that the second pole piece and the fifth pole piece can be aligned with other pole pieces at a faster speed, thereby speeding up the alignment efficiency of the stacked pole pieces.

[0100] In some embodiments, the control component includes a controller and a pusher connected to the controller, and the controller can send a pushing instruction to the pusher; the pusher is used to push the first pushing block to abut the first side of the electrode assembly and push the second pushing block to abut the second side of the electrode assembly in response to the pushing instruction.

[0101] In the technical solution of the embodiment of the present application, in the process of controlling the vibration of the vibration platform, the first push block in the electrode assembly shaping device is controlled to abut against the first side of the electrode assembly, and the second push block in the electrode assembly shaping device is controlled to abut against the second side of the electrode assembly. In this way, the electrode assembly is pushed by the first push block and the second push block, so that the stacked pole pieces in the electrode assembly can be accelerated to align the stacked pole pieces in the electrode assembly according to their own gravity and the limiting effect of the shaping area, the effect of vibration adjusting the position of the stacked pole pieces, and the limiting effect of the first push block and the second push block, thereby improving the alignment efficiency of the stacked pole pieces in the electrode assembly.

[0102] Figure 6 A schematic diagram of a process flow of an electrode assembly shaping method provided in a fourth embodiment, as shown in FIG. Figure 6 As shown, the method is applied to the control component in the electrode component shaping device, Figure 6 Example compared to Figure 3 The difference between the embodiments is that after S303, the following steps S304 and S305 may be further included:

[0103] S304, controlling the vibration platform to stop vibrating, and controlling the vibration platform to adjust to a default posture; the default posture is a posture in which the vibration platform is in a horizontal position.

[0104] In some embodiments, the control component may send a vibration instruction to the vibrator, and the vibrator vibrates in response to the vibration instruction to make the vibration platform vibrate. The control component may also send a stop vibration instruction to the vibrator, and the vibrator stops vibrating in response to the stop vibration instruction to stop the vibration platform from vibrating. In other embodiments, the control component may send a vibration instruction to the vibrator, and the vibrator vibrates for a preset duration in response to the vibration instruction, thereby controlling the vibration and stopping of the vibration of the vibration platform through one control instruction.

[0105] Exemplarily, controlling the vibration platform to adjust to a default posture may include: controlling the posture of the vibration platform to change from a tilted posture to a default posture.

[0106] S305, controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly.

[0107] In some embodiments, the glue sticking module in the electrode assembly shaping device is controlled to apply glue to the sides of the electrode assembly. For example, glue is applied to all four sides of the electrode assembly, or glue is applied to two opposite sides of the electrode assembly. The glue sticking position should avoid the tabs in the electrode assembly.

[0108] In this way, by gluing the electrode assembly in the shaping area, it is prevented that the electrode assembly becomes loose during the subsequent transportation process, which causes the alignment to deteriorate.

[0109] In the technical solution of the embodiment of the present application, when the posture of the vibration platform is controlled to change from an inclined posture to a default posture, glue is applied to the side of the electrode assembly. In this way, the electrode assembly on the vibration platform is placed horizontally, and there is no need to adjust the gluing position of the original gluing module. This is conducive to the gluing process and improves the convenience of gluing.

[0110] In other embodiments, when the vibration platform is controlled to stop vibrating, the glue sticking module in the electrode assembly shaping device is controlled to stick glue to the side of the electrode assembly.

[0111] In some embodiments, controlling the vibration platform to adjust to a default posture includes: controlling a pressing block of an electrode assembly shaping device to press the electrode assembly on the vibration platform; controlling the vibration platform to change from an inclined posture to a default posture, and in the process of the vibration platform changing from an inclined posture to a default posture, controlling the pressing block to continuously press the electrode assembly on the vibration platform.

[0112] In the technical solution of the embodiment of the present application, in the process of the vibration platform changing from an inclined posture to a default posture, and in the process of the glue sticking module sticking glue to the side of the electrode assembly, the control block is controlled to continuously press the electrode assembly on the vibration platform, so that after the stacked pole pieces in the electrode assembly are aligned, the position of the electrode assembly is fixed, thereby avoiding the situation in which the alignment of the stacked pole pieces in the electrode assembly is reduced due to loose deformation of the electrode assembly during movement and glue sticking, thereby further improving the alignment of the stacked pole pieces in the electrode assembly.

[0113] In some embodiments, controlling the vibration platform to change from a tilted posture to a default posture includes: controlling the vibration platform to rotate the vibration platform downward with a preset rotation axis as the center; the preset rotation axis is the rotation axis connecting the vibration platform and the base of the electrode assembly shaping device; when the vibration platform is rotated to a position where it is placed horizontally on the base, determining that the vibration platform is adjusted to the default posture, and controlling the vibration platform to maintain a position where it is placed horizontally on the base.

[0114] In the technical solution of the embodiment of the present application, the vibration platform is controlled to rotate downward with a preset rotation axis as the center to a position where the vibration platform is placed on the base, so that the posture of the vibration platform changes from an inclined posture to a default posture, so that the base can provide stable support for the vibration platform, thereby improving the reliability of the electrode assembly shaping device.

[0115] In some embodiments, controlling a pressing block of an electrode assembly shaping device to press an electrode assembly on a vibration platform includes: controlling the pressing block to rotate downward to a position where the pressing block presses the electrode assembly with a target rotation axis as the center; the target rotation axis is an axis connecting the pressing block and a base of the electrode assembly shaping device, and the target rotation axis is parallel to a preset rotation axis connecting the vibration platform and the base.

[0116] In some embodiments, controlling the pressing block to continuously press the electrode assembly on the vibration platform includes: controlling the pressing block to rotate downward at a target angular velocity with the target rotation axis as the center, the target angular velocity being the same as the angular velocity of the downward rotation of the vibration platform, so that the pressing block continuously presses the electrode assembly.

[0117] In the technical solution of the embodiment of the present application, the target rotation axis connecting the pressing block and the base is parallel to the preset rotation axis connecting the vibration platform and the base, and after the pressing block presses the electrode assembly, the target angular velocity of the pressing block's downward rotation is the same as the angular velocity of the vibration platform's downward rotation, so that the position change of the pressing block is synchronized with the position change of the vibration platform, thereby ensuring that the pressing block continuously presses the electrode assembly during the process of the vibration platform's posture changing from an inclined posture to a default posture, avoiding the situation where the position change of the pressing block is not synchronized with the position change of the vibration platform, resulting in the pressing block being unable to continuously press the electrode assembly, thereby reducing the alignment of the stacked pole pieces in the electrode assembly, thereby the embodiment of the present application can further improve the alignment of the stacked pole pieces in the electrode assembly.

[0118] In some embodiments, after controlling the gluing module in the electrode assembly shaping device to glue the side of the electrode assembly, the method also includes: controlling the pressing block to rotate upward to an initial position with the target rotation axis as the center; wherein the angle between the pressing block and the base at the initial position is the target angle, and the target angle is greater than a preset angle between the vibration platform and the base when the vibration platform is in an inclined posture.

[0119] Exemplarily, the initial position may be a position where the angle between the pressing block and the base is a right angle. Also exemplary, the initial position may be a position where the pressing block is placed on the base.

[0120] In the technical solution of the embodiment of the present application, after the glue is applied to the side of the electrode assembly, the control pressing block is returned to the initial position to facilitate the pressing of the electrode assembly by the pressing block during the next shaping process of the electrode assembly, thereby improving the continuity of the shaping of the electrode assembly. Moreover, when the pressing block is in the initial position, the pressing block will not block the electrode assembly, which is conducive to detecting the alignment of the stacked pole pieces in the electrode assembly.

[0121] Figure 7 A schematic flow chart of the electrode assembly shaping method provided in the fifth embodiment, as shown in FIG. Figure 7 As shown, the method is applied to the control component in the electrode component shaping device, Figure 7 Example compared to Figure 6 The difference between the embodiments is that S305 may include steps S3051 to S3053:

[0122] S3051. Send a shooting instruction to the camera module in the electrode assembly shaping device.

[0123] Exemplarily, the camera module in the electrode assembly shaping device may be fixed above the vibration platform, so that the electrode assembly placed on the vibration platform can be photographed.

[0124] S3052, acquiring a target image obtained by the camera module photographing the electrode assembly in response to a photographing instruction.

[0125] In some embodiments, when the camera module captures the obtained target image, it sends the target image to the control component.

[0126] Exemplarily, the target image may be one image, or may be multiple images, and the multiple images are different in at least one of the following: different shooting magnifications, and different positions between the camera module and the vibration platform.

[0127] S3053. When performing image analysis on the target image and determining that the alignment of the stacked electrode sheets in the electrode assembly meets the alignment requirement, control the gluing module to apply glue to the side of the electrode assembly.

[0128] Exemplarily, when the alignment of the stacked pole pieces in the electrode assembly is greater than or equal to a preset alignment, it is determined that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirement; otherwise, when the alignment of the stacked pole pieces in the electrode assembly is less than a preset alignment, it is determined that the alignment of the stacked pole pieces in the electrode assembly does not meet the alignment requirement.

[0129] In other embodiments, when image analysis is performed on the target image and it is determined that the alignment of the stacked pole pieces in the electrode assembly does not meet the alignment requirements, steps S301 and S3052 are repeated until it is determined that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements.

[0130] In the technical solution of the embodiment of the present application, by photographing the target image obtained by the electrode assembly, it is determined that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements, and then glue is affixed to the sides of the electrode assembly. This effectively prevents the situation where the alignment of the stacked pole pieces in the electrode assembly does not meet the alignment requirements, and the side of the electrode assembly is still glued. This results in the stacked battery made according to the electrode assembly not being able to meet the alignment requirements. Therefore, the embodiment of the present application can improve the performance of the stacked battery.

[0131] Figure 8 A schematic flow chart of the electrode assembly shaping method provided in the sixth embodiment, as shown in FIG. Figure 8 As shown, the method is applied to the control component in the electrode component shaping device, Figure 8 Example compared to Figure 6 The difference between the embodiments is that after S305, the step S306 may be further included:

[0132] S306, controlling the clamping module to clamp the glued electrode assembly to the transfer mechanism of the hot pressing table, so as to perform hot pressing on the glued electrode assembly through the hot pressing table.

[0133] In some embodiments, the clamping module may include a material unloading clamping claw, which controls the material unloading clamping claw in the clamping module in the electrode assembly shaping device to clamp the glue-coated electrode assembly to the transfer mechanism of the hot press table.

[0134] In the technical solution of the embodiment of the present application, the glued electrode assembly is clamped to the transfer mechanism of the hot press table by the clamping module in the electrode assembly shaping device, thereby avoiding disconnection and stagnation between production processes and ensuring the continuity of the production process.

[0135] In other embodiments, after controlling the vibration of the vibration platform to align the stacked pole pieces in the shaping area, the clamping module can also be controlled to clamp the aligned electrode assembly to the transfer mechanism of the hot pressing table so that the glued electrode assembly can be hot pressed through the hot pressing table.

[0136] Based on the same inventive concept, an embodiment of the present application also provides an electrode assembly shaping device, which is described below.

[0137] Fig. 9 A schematic diagram of the structure of an electrode assembly shaping device provided in some embodiments, such as Fig. 9 As shown, the electrode assembly shaping device 100 includes a shaping component 110, a control component 120 and a clamping module 130. The shaping component 110 is used to shape the electrode assembly 200, the control component 120 can be used to control the posture of the shaping component 110, and the clamping module 130 is used to clamp the electrode assembly 200.

[0138] Please refer to Figures 10 to 15 , Fig.10 A schematic top view of a shaping assembly in an electrode assembly shaping device provided in some embodiments; Fig.11 A schematic front view of a vibration platform in a shaping assembly provided in some embodiments in a default posture; Fig.12 A right side schematic diagram of a vibration platform in a shaping assembly provided in some embodiments in a default posture; Fig.13 A schematic front view of a vibration platform in a shaping assembly provided in some embodiments in a tilted posture; Fig.14 A right side schematic diagram of a vibration platform in a shaping assembly provided in some embodiments in a tilted posture; Fig.15 A schematic structural diagram of an electrode assembly shaping device provided for some other embodiments.

[0139] The shaping component 110 in the electrode component shaping device 100 includes a vibration platform 111, which is connected to the control component 120; the clamping module 130 is also connected to the control component 120. A plurality of limit blocks 112 are provided on the surface of the vibration platform 111, and the plurality of limit blocks 112 mark the shaping area on the surface of the vibration platform 111.

[0140] Among them, the control component 120 is used to send a clamping instruction to the clamping module 130, and the clamping module 130 is used to respond to the clamping instruction, clamp the electrode assembly 200 and move the electrode assembly 200 to the vibration platform 111; the control component 120 is also used to control the vibration platform 111 to adjust to an inclined posture, so that the electrode assembly 200 moves to the shaping area in the vibration platform 111; the control component 120 is also used to control the vibration of the vibration platform 111, so that the stacked pole pieces are aligned through the limit blocks 112.

[0141] In some embodiments, the stopper 112 mainly provides a reference surface for the vibration shaping and alignment of the electrode assembly. For example, the stopper 112 can be set at the edge of the vibration platform 111, and the height of the stopper 112 needs to be at least 5 mm (for example, 5 mm, 8 mm, 10 mm or 20 mm, etc.) higher than the thickness of the electrode assembly. In some embodiments, the edges and corners of the stopper 112 need to be chamfered, and the chamfer is 2-8 mm (for example, 2 mm, 5 mm or 8 mm, etc.). For example, the edges and corners of the stopper 112 used to limit the side of the electrode assembly 200 can be chamfered.

[0142] In the technical solution of the embodiment of the present application, a shaping area is calibrated on the surface of the vibration platform 111 by means of a plurality of limit blocks 112. Thus, when the electrode assembly 200 is moved to the shaping area in the vibration platform 111, the stacked pole pieces can be aligned in the shaping area by means of the limiting action of the plurality of limit blocks 112, thereby improving the alignment of the stacked pole pieces in the electrode assembly 200.

[0143] In some embodiments, the plurality of limit blocks 112 include a first limit block and a second limit block, the first limit block marks a first side of the shaping area, the second limit block marks a second side of the shaping area, and the first side is adjacent to the second side.

[0144] In some embodiments, the first stopper includes a first sub-stopper and a second sub-stopper, and the second stopper includes a third sub-stopper and a fourth sub-stopper. By providing a gap between the first sub-stopper and the second sub-stopper, and a gap between the third sub-stopper and the fourth sub-stopper, the tab of the electrode assembly 200 can be avoided to prevent the tab from abutting against the stopper 112 and causing deformation of the tab, and the glue-applying area of ​​the electrode assembly 200 can also be avoided, so that the glue-applying of the electrode assembly 200 can be performed through the gap between the two sub-stoppers.

[0145] In the technical solution of the embodiment of the present application, the first limit block and the second limit block can limit two adjacent side surfaces of the electrode assembly 200. When the alignment of the two adjacent side surfaces of the electrode assembly 200 meets the requirements, the alignment of the stacked pole pieces in the electrode assembly 200 also meets the requirements. Therefore, only the first limit block and the second limit block need to be provided to achieve the limitation of the electrode assembly 200. This can not only simplify the structure of the electrode assembly shaping device 100 and reduce the manufacturing cost of the electrode assembly shaping device 100, but also can adapt to electrode assemblies 200 of various sizes, thereby improving the adaptability of the electrode assembly shaping device 100.

[0146] The shaping component 110 in the electrode component shaping device 100 also includes a base 113 ; the control component 120 includes a controller 1201 and an angle adjuster 1202 connected to the controller 1201 , and the angle adjuster 1202 is also connected to the vibration platform 111 in the shaping component 110 .

[0147] The vibration platform 111 is on the base 113, and the vibration platform 111 and the base 113 are connected by a preset rotating shaft 114; the projection of the preset rotating shaft 114 on the plane where the shaping area is located has a first angle with the first side edge that is an acute angle, and has a second angle with the second side edge that is an acute angle.

[0148] Exemplarily, the controller 1201 is also used to send a rotation instruction to the angle adjuster 1202; the angle adjuster 1202 is used to drive the vibration platform 111 to rotate upward to a position with a preset angle between it and the base 113 around the preset rotation axis 114 in response to the rotation instruction.

[0149] Exemplarily, the controller 1201 is also used to send a return command to the angle adjuster 1202; the angle adjuster 1202 is used to drive the vibration platform 111 to rotate downward around the preset rotation axis 114 in response to the return command until the vibration platform 111 is horizontally placed on the base 113.

[0150] In some embodiments, the angle adjuster 1202 may be a telescopic member, for example, the angle adjuster 1202 may be a telescopic member such as a hydraulic telescopic member, one end of the telescopic member is connected to the base 113, and the other end is connected to the vibration platform 111, and the vibration platform 111 is rotated upward by extending the telescopic member, and the vibration platform 111 is rotated downward by shortening the telescopic member. In other embodiments, the angle adjuster 1202 may be a motor, and the motor drives the rotation shaft to rotate to realize the upward or downward rotation of the vibration platform 111.

[0151] In the technical solution of the embodiment of the present application, the projection of the preset rotating shaft 114 on the plane where the shaping area is located has a first angle with the first side edge that is an acute angle, and a second angle with the second side edge that is an acute angle. In this way, when the vibration platform 111 is rotated upward, the electrode assembly 200 on the vibration platform 111 can move toward the shaping area between the first limit block and the second limit block, and through a single rotation operation, the first limit block and the second limit block can be pressed against two adjacent side surfaces of the electrode assembly 200, thereby achieving alignment of the two adjacent side surfaces of the electrode assembly 200, thereby improving the shaping efficiency of the electrode assembly 200.

[0152] In some embodiments, the first angle is the same as the second angle. In the technical solution of the embodiment of the present application, the magnitude of the supporting force provided by the first stopper to the electrode assembly 200 is the same as the magnitude of the supporting force provided by the second stopper to the electrode assembly 200, so that the magnitude of the supporting force on the two adjacent sides of the electrode assembly 200 is the same, avoiding the situation where the electrode assembly 200 is locally deformed due to uneven force, thereby improving the reliability of the electrode assembly 200.

[0153] The vibration platform 111 includes a storage table 1111 and a vibrator 1112 connected to the storage table 1111; the control component 120 is also used to send a vibration instruction to the vibrator 1112 when the vibration platform 111 is adjusted to an inclined posture; the vibrator 1112 is used to vibrate for a target time in response to the vibration instruction, so that the vibration platform 111 vibrates for a target time. In this way, the electrode assembly 200 is aligned according to its own gravity, vibration and the limiting effect of the limit block 112. In the embodiment of the present application, the controller 1201 sends a vibration instruction to the vibrator 1112.

[0154] In the technical solution of the embodiment of the present application, the vibration of the vibration platform 111 is controlled by controlling the vibration of the vibrator 1112 through the controller 1201, so that the controller 1201 can flexibly control the vibration of the vibrator 1112 according to the requirements of the vibration type and vibration duration, thereby improving the flexibility of vibration control.

[0155] Exemplarily, the stopper 112 is placed at the edge of the vibration platform 111. The electrode assembly 200 is placed on the vibration platform 111, and the vibration platform 111 is on the base 113, and the vibration platform 111 and the base 113 are connected by a preset shaft 114, so that when the vibration platform 111 rotates upward with the preset shaft 114 as the center, the electrode assembly 200 on the vibration platform 111 can move to the position of abutting the first stopper and the second stopper.

[0156] The vibration platform 111 has a certain tilting function, and the vibration shaping of the electrode assembly is more efficient and easier to achieve by utilizing the deadweight of the electrode assembly. The tilting angle θ of the vibration platform 111 (i.e., the angle between the vibration platform 111 and the base 113) is preferably 35 to 75 degrees. For example, the tilting angle θ is 35, 45, 60 or 75 degrees.

[0157] See also Fig.15 and Fig.16 , Fig.16 A schematic top view of a shaping assembly in an electrode assembly shaping device provided for some other embodiments.

[0158] The control component 120 includes a controller 1201 and a pusher 1203 connected to the controller 1201 ; the shaping component 110 in the electrode assembly shaping device 100 also includes a first push block 115 and a second push block 116 connected to the pusher 1203 .

[0159] The controller 1201 is used to send a pushing instruction to the pusher 1203 when the vibration platform 111 is adjusted to a tilted posture; the pusher 1203 is used to push the first push block 115 to abut the first side of the electrode assembly 200, and push the second push block 116 to abut the second side of the electrode assembly 200 in response to the pushing instruction; wherein the first side and the second side are adjacent, and the first side and the second side are different from the side of the electrode assembly 200 abutted by the limit block 112.

[0160] The controller 1201 is also used to send a reset instruction to the pusher 1203 when the vibration platform 111 stops vibrating; the pusher 1203 is used to drive the first push block 115 to withdraw from the abutment with the first side surface of the electrode assembly 200, and drive the second push block 116 to withdraw from the abutment with the first side surface of the electrode assembly 200 in response to the pushing instruction.

[0161] See also Fig.15 and Fig.17 , Fig.17 A front view schematically showing a vibration platform in a shaping assembly in some other embodiments in a tilted posture.

[0162] The electrode assembly shaping device 100 further includes a glue sticking module 140 connected to the control assembly 120 .

[0163] The control component 120 is also used to control the posture of the vibration platform 111 to change from the inclined posture to the default posture; the default posture is the posture of the vibration platform 111 in a horizontal position.

[0164] The control component 120 is further used to send a glue sticking instruction to the glue sticking module 140 ; ​​the glue sticking module 140 is used to apply glue to the side of the electrode assembly 200 in response to the glue sticking instruction.

[0165] The electrode assembly shaping device 100 also includes a base 113 ; the control assembly 120 includes a pressing block 117 , a controller 1201 , and a pressing regulator 1204 connected to the controller 1201 , and the pressing regulator 1204 is also connected to the pressing block 117 .

[0166] The pressing block 117 is on the vibration platform 111 , and the pressing block 117 is connected to the base 113 via a target rotating shaft.

[0167] The controller 1201 is used to send a pressing instruction to the pressing regulator 1204 when the vibration platform 111 stops vibrating; the pressing regulator 1204 is used to drive the pressing block 117 to rotate downward around the target rotation axis to a position where the pressing block 117 presses the electrode assembly 200 in response to the pressing instruction.

[0168] The controller 1201 is further used to send a hold instruction to the pressing regulator 1204 ; the pressing regulator 1204 is used to drive the pressing block 117 to continuously press the electrode assembly 200 in response to the hold instruction when the vibration platform 111 changes from the tilted posture to the default posture.

[0169] The controller 1201 is also used to send a release command to the pressing regulator 1204 when the gluing of the electrode assembly 200 is completed; the pressing regulator 1204 is used to respond to the release command and drive the pressing block 117 to rotate upward to the initial position with the target rotation axis as the center; wherein the initial position is that the angle between the pressing block 117 and the base 113 is the target angle, and the target angle is greater than the preset angle between the vibration platform 111 and the base 113 when the vibration platform 111 is in an inclined posture.

[0170] In this way, after the shaping is completed, it is necessary to provide an electrode assembly clamping force to ensure that the electrode assembly remains in a relatively static state before the adhesive is applied. The clamping method is to use a clamp 117 or multiple clamps to clamp the electrode assembly. After the shaping is completed, the electrode assembly is directly clamped to avoid changes in the alignment of the electrode assembly after it is loosened when the vibration platform 111 is restored to a horizontal state. The clamp 117 can rotate 90 degrees and then press down the electrode assembly. In some embodiments, the clamp 117 drives the clamp 117 and the vibration platform 111 to rotate while pressing the electrode assembly 200. The rotation angular velocity of the clamp 117 is the same as the rotation angular velocity of the vibration platform 111, so that the clamp continues to press the electrode assembly 200 on the vibration platform 111 during the rotation of the vibration platform 111.

[0171] In other embodiments, the pressing block 117 is connected to the vibration platform 111 via a designated rotating shaft, and the pressing block 117 is rotated relative to the vibration platform 111 to press the electrode assembly 200 on the vibration platform 111, and release the pressing of the electrode assembly 200 on the vibration platform 111, thereby enabling the pressing block 117 to press the electrode assembly 200 on the vibration platform 111, and during the rotation of the vibration platform 111, the pressing block 117 continues to press the electrode assembly 200 on the vibration platform 111.

[0172] In some other embodiments, the pressing block 117 is connected to the vibration platform 111 via a telescopic member, and the pressing block 117 presses the electrode assembly 200 on the vibration platform 111 and releases the pressure on the electrode assembly 200 on the vibration platform 111 by extending and retracting the telescopic member, thereby enabling the pressing block 117 to press the electrode assembly 200 on the vibration platform 111, and during the rotation of the vibration platform 111, the pressing block 117 continues to press the electrode assembly 200 on the vibration platform 111.

[0173] The electrode assembly shaping device 100 further includes a camera module 150 connected to the control component 120; the control component 120 is further configured to send a shooting instruction to the camera module 150. The camera module 150 is configured to shoot the electrode assembly 200 in response to the shooting instruction and send the shot target image to the control component 120. The control component 120 is further configured to perform image analysis on the target image to determine whether the alignment of the stacked pole pieces in the electrode assembly 200 meets the alignment requirement.

[0174] The control component 120 is also used to send a clamping instruction to the clamping module 130 when the glue application on the electrode assembly 200 is completed; the clamping module 130 is used to respond to the clamping instruction and clamp the glued electrode assembly 200 to the transfer mechanism of the hot pressing table to hot press the glued electrode assembly 200 through the hot pressing table.

[0175] Fig.18 A process diagram of online vibration shaping is provided for some embodiments, such as Fig.18 As shown, the loading clamp of the electrode assembly shaping device clamps the electrode assembly in the stack to the vibration platform, and through the vibration shaping of the vibration platform, the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements, and then the pre-pressing and gluing steps are performed. After the gluing is completed, the unloading clamp of the electrode assembly shaping device clamps the glued electrode assembly out. Among them, the main function of the loading clamp is to clamp the stacked electrode assembly and then transfer it to the vibration platform.

[0176] Among them, the main function of vibration shaping is to allow the electrode assembly to complete the secondary shaping of the electrode assembly in this process step, so that the alignment of the stacked pole pieces in the electrode assembly is smoother. The main principle is to use a certain frequency of vibration to make the edge of the electrode assembly and the limit block repeatedly aligned to achieve the effect of secondary shaping of the electrode assembly.

[0177] Among them, the main components of the vibration platform device are the counterweight base (i.e. the base mentioned above), angle adjuster, vibrator, vibration platform, limit block and other components. The function of the counterweight base is to provide a larger counterweight for the platform during the vibration process to prevent the platform from shaking too violently and moving. The function of the angle adjuster is to provide a certain inclination angle for the vibration platform, and use the deadweight of the electrode assembly in the vibration direction to accelerate the alignment of the electrode assembly; the vibration platform is a plane for placing the electrode assembly, and its surface must be wear-resistant and smooth; the limit block mainly provides a reference for the alignment of the electrode assembly.

[0178] Among them, pre-pressing and gluing are mainly divided into pre-pressing and gluing steps. Pre-pressing is to provide pressure immediately after the electrode assembly is vibrated and shaped to prevent the electrode assembly from loosening. The side glue is applied to tighten the electrode assembly when it is pressed to prevent the electrode assembly from secondary deflection during the subsequent transportation process, which may lead to deterioration of alignment.

[0179] Among them, the main function of the unloading clamp is to clamp the electrode assembly and transfer it to the next process step.

[0180] Fig.19 A schematic diagram of a process flow of online vibration shaping of an electrode assembly provided in some embodiments, such as Fig.19 As shown, the process includes the following steps:

[0181] S1901. Place the electrode assembly on the vibration platform. S1902. Tilt the vibration platform. S1903. Start the vibration of the vibrator. S1904. Stop the vibration of the vibrator. S1905. Press the electrode assembly with a pressing block. S1906. Restore the vibration platform to a horizontal level. S1907. Apply the fixing glue to the side of the electrode assembly. S1908. Release the pressing block that presses the electrode assembly. S1909. The unloading clamping jaws take the glued electrode assembly.

[0182] During the vibration of the vibrator, the first pushing block and the second pushing block can be driven to push the electrode assembly.

[0183] In some embodiments, based on the solution of directly attaching the side glue to the electrode assembly to fix the electrode assembly and then hot pressing, the embodiment of the present application provides a new electrode assembly manufacturing process flow, which adds an online automatic shaping step before the electrode assembly is attached to the side glue. In some embodiments, the electrode assembly is secondary shaped by online vibration. The vibration shaping mainly uses the limit as a reference, and uses vibration and the self-weight of the electrode assembly to automatically align the electrode assembly. In some embodiments, after shaping, the electrode assembly is fixed by pressing the glue to prevent the electrode assembly from being loose and skewed during transportation.

[0184] In some embodiments, an electrode assembly pretreatment process is provided to perform online vibration shaping on the electrode assembly, which can effectively improve the stacking misalignment of the electrode assembly during free stacking and the deterioration of the alignment of the stacked pole pieces in the electrode assembly during the transportation process.

[0185] Online vibration shaping mainly provides a multiple reciprocating force to make the electrode assembly collide with the reference surface multiple times to achieve alignment. Its key mechanisms are vibrators, limit blocks and tiltable platforms (i.e., vibration platforms). The vibrators can provide directional vibration power to make the electrode assembly vibrate in a fixed direction. For example, vibration is performed along the diagonal direction of the electrode assembly.

[0186] Exemplarily, the vibrator can vibrate in at least one of the following directions: along a diagonal direction (i.e., a direction parallel to the angle bisector corresponding to the first side and the second side), along an X-axis direction (i.e., a direction perpendicular to the first side), and along a Y-axis direction (i.e., a direction perpendicular to the second side). The diagonal direction can be the direction of the angle bisector of the angle between the X-axis and the Y-axis.

[0187] In the embodiment of the present application, a vibration platform is placed on the electrode assembly, the vibration platform is tilted 60° in the X and Y directions, the vibrator is turned on to vibrate, the vibration frequency is 50KHz, the vibrator stops vibrating, the pressing block presses the electrode assembly, the vibration platform returns to the horizontal state, and the side glue is automatically attached to tighten the electrode assembly, thereby ensuring the alignment of the stacked pole pieces in the electrode assembly, and then the electrode assembly is unloaded.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for shaping an electrode assembly, wherein the electrode assembly comprises stacked pole pieces, characterized in that: The electrode assembly shaping method comprises: Controlling a gripping module of the electrode assembly shaping device to grip the electrode assembly and transfer the electrode assembly to a vibration platform of the electrode assembly shaping device; Controlling the vibration platform to adjust to an inclined posture so that the electrode assembly moves to a shaping area of ​​the vibration platform; The vibration platform is controlled to vibrate so that the stacked pole pieces are aligned within the shaping area.

2. The electrode assembly shaping method according to claim 1, characterized in that: The controlling the vibration platform to adjust to an inclined posture comprises: Controlling the vibration platform to rotate upward around a preset rotation axis; the preset rotation axis is a rotation axis connecting the vibration platform and the base of the electrode assembly shaping device; When the vibration platform rotates to a position where the angle between the vibration platform and the base is a preset angle, it is determined that the vibration platform is adjusted to the inclined posture, and the vibration platform is controlled to maintain the position where the angle between the vibration platform and the base is the preset angle.

3. The electrode assembly shaping method according to claim 2, characterized in that: The step of controlling the vibration platform to vibrate so that the stacked pole pieces are aligned through the shaping area comprises: Control the vibration of the vibration platform, and control the first push block in the electrode assembly shaping device to abut against the first side of the electrode assembly, and control the second push block in the electrode assembly shaping device to abut against the second side of the electrode assembly, so as to limit the first side and the second side of the electrode assembly, the first side and the second side are adjacent, so that the stacked pole pieces are aligned through the shaping area and the limiting of the first side and the second side.

4. The electrode assembly shaping method according to any one of claims 1 to 3, characterized in that: The method further comprises: Controlling the vibration platform to stop vibrating, and controlling the vibration platform to adjust to a default posture; the default posture is a posture in which the vibration platform is in a horizontal position; The glue sticking module in the electrode assembly shaping device is controlled to stick glue to the side of the electrode assembly.

5. The electrode assembly shaping method according to claim 4, characterized in that: The controlling the vibration platform to adjust to a default posture comprises: Controlling a pressing block of the electrode assembly shaping device to press the electrode assembly on the vibration platform; The vibration platform is controlled to change from the tilted posture to the default posture, and in the process of the vibration platform changing from the tilted posture to the default posture, the pressing block is controlled to continuously press the electrode assembly on the vibration platform.

6. The electrode assembly shaping method according to claim 5, characterized in that: The controlling the vibration platform to change from the tilted posture to the default posture comprises: Controlling the vibration platform to rotate downward with a preset rotation axis as the center; the preset rotation axis is the rotation axis connecting the vibration platform and the base of the electrode assembly shaping device; When the vibration platform is rotated to a position where it is horizontally placed on the base, it is determined that the vibration platform is adjusted to the default posture, and the vibration platform is controlled to maintain the position where it is horizontally placed on the base.

7. The electrode assembly shaping method according to claim 5, characterized in that: The pressing block of the electrode assembly shaping device is controlled to press the electrode assembly on the vibration platform, comprising: Control the pressing block to rotate downward to a position where the pressing block presses the electrode assembly with the target rotation axis as the center; the target rotation axis is the rotation axis connecting the pressing block and the base of the electrode assembly shaping device, and the target rotation axis is parallel to the preset rotation axis connecting the vibration platform and the base; The controlling the pressing block to continuously press the electrode assembly on the vibration platform comprises: The pressing block is controlled to rotate downward at a target angular velocity with the target rotation axis as the center, and the target angular velocity is the same as the angular velocity of the vibration platform rotating downward, so that the pressing block continuously presses the electrode assembly.

8. The electrode assembly shaping method according to claim 7, characterized in that: After controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly, the method further includes: The pressing block is controlled to rotate upward to an initial position with the target rotation axis as the center; wherein the initial position is a target angle between the pressing block and the base, and the target angle is greater than a preset angle between the vibration platform and the base when the vibration platform is in the tilted posture.

9. The electrode assembly shaping method according to claim 4, characterized in that: The step of controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly includes: Sending a shooting instruction to a camera module in the electrode assembly shaping device; Acquire a target image obtained by photographing the electrode assembly by the camera module in response to the photographing instruction; When image analysis is performed on the target image and it is determined that the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirement, the gluing module is controlled to apply glue to the side of the electrode assembly.

10. The electrode assembly shaping method according to claim 4, characterized in that: After controlling the glue sticking module in the electrode assembly shaping device to stick glue to the side of the electrode assembly, the method further includes: The clamping module is controlled to clamp the glued electrode assembly to the transfer mechanism of the hot pressing table, so that the glued electrode assembly can be hot pressed by the hot pressing table.

11. An electrode assembly shaping device, characterized in that: The electrode assembly includes stacked pole pieces, and the electrode assembly shaping device includes: a vibration platform, a control component and a clamping module, wherein the clamping module and the vibration platform are both connected to the control component; a plurality of limit blocks are provided on the surface of the vibration platform, and the plurality of limit blocks mark the shaping area on the surface of the vibration platform; The control component is used to send a clamping instruction to the clamping module, and the clamping module is used to clamp the electrode assembly and move the electrode assembly to the vibration platform in response to the clamping instruction; The control component is also used to control the vibration platform to adjust to a tilted posture so that the electrode assembly moves to a shaping area in the vibration platform; The control assembly is also used to control the vibration of the vibration platform so that the stacked pole pieces are aligned through the limiting of the multiple limiting blocks.

12. The electrode assembly shaping device according to claim 11, characterized in that: The plurality of limit blocks include a first limit block and a second limit block, the first limit block marks a first side of the shaping area, the second limit block marks a second side of the shaping area, and the first side is adjacent to the second side.

13. The electrode assembly shaping device according to claim 12, characterized in that: The electrode assembly shaping device further comprises a base; the control assembly comprises a controller and an angle adjuster connected to the controller, and the angle adjuster is also connected to the vibration platform; The vibration platform is on the base, and the vibration platform and the base are connected via a preset rotating shaft; a projection of the preset rotating shaft on the plane where the shaping area is located has a first angle with the first side edge that is an acute angle, and a second angle with the second side edge that is an acute angle; The controller is further used to send a rotation instruction to the angle adjuster; the angle adjuster is used to drive the vibration platform to rotate upward to a position with a preset angle between the vibration platform and the base, with the preset rotation axis as the center, in response to the rotation instruction; The controller is also used to send a return command to the angle adjuster; the angle adjuster is used to respond to the return command to drive the vibration platform to rotate downward around the preset rotation axis until the vibration platform is horizontally placed on the base.

14. The electrode assembly shaping device according to claim 13, characterized in that: The first angle is the same as the second angle.

15. The electrode assembly shaping device according to claim 11, characterized in that: The vibration platform includes a storage platform and a vibrator connected to the storage platform; The control component is also used to send a vibration instruction to the vibrator when the vibration platform is adjusted to the tilted posture; The vibrator is used to vibrate for a target duration in response to the vibration instruction, so that the vibration platform vibrates for the target duration.

16. The electrode assembly shaping device according to claim 11, characterized in that: The control assembly includes a controller and a pusher connected to the controller; the electrode assembly shaping device also includes a first push block and a second push block connected to the pusher; The controller is used to send a push instruction to the pusher when the vibration platform is adjusted to the tilted posture; the pusher is used to push the first push block to abut against the first side surface of the electrode assembly and push the second push block to abut against the second side surface of the electrode assembly in response to the push instruction; wherein the first side surface and the second side surface are adjacent, and the first side surface and the second side surface are different from the side surface of the electrode assembly abutted by the limit block; The controller is also used to send a reset instruction to the pusher when the vibration platform stops vibrating; the pusher is used to drive the first push block to withdraw from the abutment with the first side surface of the electrode assembly and drive the second push block to withdraw from the abutment with the first side surface of the electrode assembly in response to the reset instruction.

17. The electrode assembly shaping device according to any one of claims 11 to 16, characterized in that: The electrode assembly shaping device also includes a glue sticking module connected to the control assembly; The control component is also used to control the vibration platform to adjust to a default posture; the default posture is a posture in which the vibration platform is in a horizontal position; The control component is further used to send a gluing instruction to the gluing module; the gluing module is used to apply glue to the side of the electrode assembly in response to the gluing instruction.

18. The electrode assembly shaping device according to claim 17, characterized in that: The electrode assembly shaping device further comprises a base; the control assembly comprises a pressing block, a controller and a pressing regulator connected to the controller, and the pressing regulator is also connected to the pressing block; The pressing block is on the vibration platform, and the pressing block is connected to the base via a target rotating shaft; The controller is used to send a pressing instruction to the pressing regulator when the vibration platform stops vibrating; the pressing regulator is used to drive the pressing block to rotate downward with the target rotation axis as the center to a position where the pressing block presses the electrode assembly in response to the pressing instruction; The controller is further used to send a holding instruction to the pressing regulator; the pressing regulator is used to drive the pressing block to continuously press the electrode assembly in response to the holding instruction during the process in which the vibration platform changes from the tilted posture to the default posture; The controller is also used to send a release command to the pressing regulator when the gluing of the electrode assembly is completed; the pressing regulator is used to respond to the release command to drive the pressing block to rotate upward to an initial position with the target rotation axis as the center; wherein the initial position is that the angle between the pressing block and the base is a target angle, and the target angle is greater than a preset angle between the vibration platform and the base when the vibration platform is in the inclined posture.

19. The electrode assembly shaping device according to claim 17, characterized in that: The electrode assembly shaping device also includes a camera module connected to the control assembly; The control component is also used to send a shooting instruction to the camera module; The camera module is used to photograph the electrode assembly in response to the photographing instruction, and send the photographed target image to the control component; The control component is also used to perform image analysis on the target image to determine whether the alignment of the stacked pole pieces in the electrode assembly meets the alignment requirements.

20. The electrode assembly shaping device according to claim 17, characterized in that: The control component is also used to send a clamping instruction to the clamping module; the clamping module is used to respond to the clamping instruction to clamp the glue-applied electrode assembly to the transfer mechanism of the hot pressing table, so as to hot press the glue-applied electrode assembly through the hot pressing table.

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