Splicing apparatus

Abstract

The application relates to a core combining device, which comprises a rack, a turnover mechanism, a first driving mechanism and a second driving mechanism. Two cores for core combining can be respectively fed to the two turnover mechanisms and fixed on the corresponding bearing surfaces. The first driving mechanism can drive the rotation of a horizontal plate, and when the bearing surfaces of the two turnover mechanisms are in a superimposed state, the two cores can be combined. While the first driving mechanism drives the rotation of the horizontal plate, the second driving mechanism can drive the horizontal plates of the two turnover mechanisms to move towards each other along a second direction. In this way, the two cores can move towards each other in the process of being turned towards each other, so that excessive pulling of the tab in the process of core turning can be avoided, and the tab can be effectively prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of lithium battery equipment technology, and in particular to a core-combining device. Background Technology

[0002] In the production process of lithium batteries, a process called "cell bonding" is usually required, which refers to bonding two cells together. Traditional cell bonding devices typically bring two cells closer together by flipping them until their surfaces are in contact. However, because the tabs on the cells are relatively thin, they are prone to tearing during the flipping process, resulting in a low yield rate. Summary of the Invention

[0003] Therefore, it is necessary to provide a core-combining device that can effectively avoid damage to the tabs during the core-combining process to address the above problems.

[0004] A core-combining device, comprising:

[0005] frame;

[0006] Two flipping mechanisms are mounted on the frame. Each flipping mechanism includes a horizontal plate that can rotate about an axis parallel to a first direction. The horizontal plate is provided with a bearing surface for fixing the battery cell. The horizontal plates of the two flipping mechanisms can move along a second direction perpendicular to the first direction.

[0007] A first driving mechanism is capable of driving the horizontal plate to rotate, so that the bearing surfaces of the two flipping mechanisms switch between an overlapping state and a parallel state; and

[0008] The second drive mechanism is capable of driving the cross plates of the two flipping mechanisms to move closer or further apart from each other along the second direction.

[0009] In one embodiment, the rack includes:

[0010] Two first base plates, and the cross plates of the two flipping mechanisms are rotatably mounted on the two first base plates respectively;

[0011] The second base plate, wherein two of the first base plates are slidably mounted on the second base plate along the second direction;

[0012] The third base plate, the second base plate is fixed to the third base plate, and the second driving mechanism is disposed on the third base plate.

[0013] In one embodiment, each of the flipping mechanisms further includes an adsorption plate fixed to the horizontal plate, the adsorption surface of the adsorption plate being capable of forming a negative pressure, and the bearing surface being located on the adsorption surface of the adsorption plate.

[0014] In one embodiment, a groove is formed on the adsorption surface of the adsorption plate, and an in-situ sensor is disposed in the groove. The in-situ sensor is triggered when the battery cell is supported on the support surface.

[0015] In one embodiment, each of the flipping mechanisms further includes a pressing component, the pressing component including pressing plates disposed on opposite sides of the bearing surface, the pressing component having a repositioning state in which the pressing plates are repositioned away from the bearing surface and a pressing state in which the pressing plates press the battery cell onto the bearing surface.

[0016] In one embodiment, the pressing component further includes abutment blocks disposed on opposite sides of the bearing surface. During the process of the pressing component switching from the avoidance state to the pressing state, the pressing component can drive the abutment blocks on both sides to move closer to each other and abut against the battery cells located on the bearing surface respectively.

[0017] In one embodiment, the cross plate is provided with two sliding grooves extending along the first direction, the two sliding grooves being distributed on both sides of the bearing surface in the first direction, and the pressing assembly further includes:

[0018] Two connecting seats, each of which passes through one of the two sliding grooves;

[0019] A transverse drive is provided on the side of the transverse plate facing away from the bearing surface. The two connecting seats are connected to the transverse drive and can move closer to or further away from the first direction under the drive of the transverse drive.

[0020] Two mounting plates are respectively disposed at the ends of the two connecting seats away from the transverse drive member and are slidably mounted on the horizontal plate. Each mounting plate is provided with a downward drive member. The pressure plate is disposed at the drive end of the downward drive member and can move in a direction perpendicular to the bearing surface under the drive of the downward drive member. The abutment block is disposed on the side of the mounting plate facing the bearing surface.

[0021] In one embodiment, a pressing mechanism is also included, the pressing mechanism being disposed on the cross plate of one of the flipping mechanisms, the pressing mechanism including a pressure plate, the pressing mechanism being capable of driving the pressure plate to form a clearance against the bearing surface or to press the battery cell against the bearing surface.

[0022] In one embodiment, the clamping mechanism further includes a fixed plate, a first driving member, and a second driving member. The fixed plate is fixed to the horizontal plate, the first driving member is fixed to the fixed plate, the second driving member is disposed at the driving end of the first driving member, and the pressure plate is disposed at the driving end of the second driving member. The first driving member can drive the second driving member to move in a direction perpendicular to the bearing surface, and the second driving member can drive the pressure plate to move in a direction parallel to the bearing surface.

[0023] In one embodiment, a flexible pad is provided on the surface of the pressure plate that contacts the battery cell.

[0024] In the aforementioned core-joining device, two battery cells are fed separately to two flipping mechanisms and fixed on their corresponding bearing surfaces. The first drive mechanism rotates the horizontal plate, allowing the two cells to fit together when their bearing surfaces overlap. Simultaneously, the second drive mechanism drives the horizontal plates of the two flipping mechanisms to move closer together along a second direction. This allows the two cells to approach each other while flipping, preventing excessive stretching of the tabs during the flipping process and effectively avoiding damage to the tabs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the core-combining device in a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 Top view of the core-combining device shown;

[0028] Figure 3 for Figure 1 Front view of the flipping mechanism in the shown core-combining device;

[0029] Figure 4 for Figure 3 Top view of the flipping mechanism shown;

[0030] Figure 5 for Figure 1 Front view of the clamping mechanism in the shown core-combining device;

[0031] Figure 6 This is a schematic diagram of a battery cell used for battery cell assembly. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please see Figure 1 and Figure 2 In a preferred embodiment of the present invention, the core-combining device 10 includes a frame 100, a flipping mechanism 200, a first driving mechanism 300, and a second driving mechanism 400.

[0039] The frame 100 serves a supporting function and can be assembled from metal sheets, rods, etc. Specifically, in this embodiment, the frame 100 includes a first base plate 110, a second base plate 120, and a third base plate 130. There are two first base plates 110, which are slidably mounted on the second base plate 120 along a second direction, and the second base plate 120 is fixed to the third base plate 130.

[0040] Specifically, the second direction refers to Figure 1 The direction is perpendicular to the plane of the drawing. Two guide rails extending along the second direction can be provided on the surface of the second base plate 120, and the two first base plates 110 are slidably mounted on the two guide rails by sliders. In addition, the bottom of the third base plate 130 can also be connected to a slide rail, so that the core-joining device 10 can slide along the slide rail as a whole, so as to facilitate the core-joining device 10 to cooperate with equipment at other workstations in actual application.

[0041] There are two flipping mechanisms 200, which are mounted on the frame 100. Please refer to the following: Figure 3 and Figure 4 Each flipping mechanism 200 includes a horizontal plate 210, which has a bearing surface for fixing the battery cell (not shown). Two battery cells 20 for combining are as follows... Figure 6As shown, each battery cell 20 has a tab 21 on one side edge. Moreover, the tabs 21 of two battery cells 20 are arranged facing each other and pre-connected. During feeding, the two battery cells 20 are placed on the bearing surfaces of the two flipping mechanisms 200 respectively.

[0042] In this embodiment, each flipping mechanism 200 further includes an adsorption plate 220 fixed on the horizontal plate 210. The adsorption surface of the adsorption plate 220 can form a negative pressure, and the bearing surface is located on the adsorption surface of the adsorption plate 220.

[0043] A suction cup can be provided on the adsorption surface of the adsorption plate 220, and multiple adsorption holes can also be opened on the adsorption surface. The adsorption holes are connected to a vacuum device to generate negative pressure on the adsorption surface. In other words, the bearing surface can form a negative pressure and reliably adsorb the battery cell 20, thereby keeping the battery cell 20 in a stable position during the core-combining process. Moreover, the negative pressure adsorption method is less likely to cause mechanical damage to the battery cell 20, and the negative pressure can be removed when the battery cell 20 needs to be removed after the core-combining operation is completed.

[0044] Specifically, in this embodiment, a groove (not shown in the figure) is formed on the adsorption surface of the adsorption plate 220, and an in-situ sensor 221 is disposed in the groove. The in-situ sensor 221 is triggered when the battery cell 20 is supported on the support surface. That is, after the battery cell 20 is placed on the support surface, the in-situ sensor 221 is triggered. At this time, the in-situ sensor 221 can feed back the trigger signal to the control terminal to start the subsequent process, thereby improving the automation level of the core-combining device 10.

[0045] Furthermore, the horizontal plates 210 of both flipping mechanisms 200 are capable of rotating about an axis parallel to a first direction, where the first direction refers to... Figure 1 The left and right directions are shown. Moreover, the horizontal plates 210 of the two flipping mechanisms 200 can move in the second direction.

[0046] Specifically, the horizontal plates 210 of the two flipping mechanisms 200 are rotatably mounted on the two first base plates 110. Bearings or shafts can be provided at both ends of the horizontal plates 210 to achieve rotatable mounting with the corresponding first base plates 110. When the two first base plates 110 slide on the second base plate 120 in the second direction, the two horizontal plates 210 can be driven to move closer or further apart in the second direction.

[0047] The first drive mechanism 300 can drive the horizontal plate 210 to rotate, so that the bearing surfaces of the two flipping mechanisms 200 can switch between an overlapping state and a parallel state. When the bearing surfaces of the two flipping mechanisms 200 are in the parallel state, the two bearing surfaces are unfolded and approximately parallel, and the loading and unloading of the battery cells 20 can be performed at this time; when the bearing surfaces of the two flipping mechanisms 200 are in the overlapping state, the two bearing surfaces approach each other and make the battery cells 20 they are carrying fit together, so that the two battery cells 20 can be combined.

[0048] The first drive mechanism 300 can be a power component such as a motor. Specifically, the first drive mechanism 300 includes a motor (not shown in the figure) and a belt tensioning mechanism (not shown in the figure). The motor is mounted on the third base plate 130, and a belt tensioning mechanism is provided at one end of each horizontal plate 210. The motor drives the horizontal plate 210 to rotate through the belt tensioning mechanism.

[0049] To prevent the two horizontal plates 210 from interfering with each other during rotation, they are staggered. That is, the rotation axes of the two horizontal plates 210 are parallel to each other, but their ends are not aligned. Moreover, the belt tensioning mechanisms on the two horizontal plates 210 are located at different ends. For example, if the belt tensioning mechanism is located at the left end of one horizontal plate 210, then the belt tensioning mechanism on the other horizontal plate 210 is located at the right end.

[0050] The second drive mechanism 400 can drive the horizontal plates 210 of the two tilting mechanisms 200 to move closer or further apart in a second direction. Specifically, the second drive mechanism 400 can be a cylinder, electric cylinder, or motor screw assembly mounted on the third base plate 130. By driving the two first base plates 110 to slide in the second direction, the second drive mechanism 400 can drive the horizontal plates 210 of the two tilting mechanisms 200 to move closer or further apart in the second direction.

[0051] While the first drive mechanism 300 drives the horizontal plate 210 to rotate, the second drive mechanism 400 can drive the horizontal plates 210 of the two flipping mechanisms 200 to move closer to each other along a second direction. Therefore, the two cells 20 can also move closer to each other while flipping towards each other. In this way, excessive pulling on the tabs 21 is avoided during the flipping process, thereby effectively preventing damage to the tabs 21.

[0052] In this embodiment, each flipping mechanism 200 further includes a pressing component 230, which includes pressing plates 231 disposed on opposite sides of the bearing surface. The pressing component 230 has a clearance state in which the pressing plates 231 avoid the bearing surface and a pressing state in which the pressing plates 231 press the battery cell 20 onto the bearing surface.

[0053] Specifically, there are generally two tablet presses 231, located on both sides of the first bearing direction, i.e. Figure 3 The left and right sides are shown. When feeding the battery cell 20, the holding component 230 switches to the avoidance state, and the pressure plate 231 exposes the bearing surface, so that the battery cell 20 can be placed on the bearing surface. After feeding is completed, the holding component 230 switches to the holding state, and the pressure plate 231 presses the battery cell 20 tightly against the bearing surface, so that the battery cell 20 has better stability during the flipping process.

[0054] Furthermore, in this embodiment, the pressing component 230 also includes abutment blocks 232 disposed on opposite sides of the bearing surface. During the process of the pressing component 230 switching from the avoidance state to the pressing state, the pressing component 230 can drive the abutment blocks 232 on both sides to move closer to each other and abut against the battery cell 20 located on the bearing surface respectively.

[0055] Specifically, two abutment blocks 232 are generally provided, located on both sides in the first bearing direction. Under the action of the abutment blocks 232 on both sides, the battery cell 20 on the bearing surface can be positioned. In this way, when the pressing plate 231 presses the battery cell 20 between the bearing surfaces, the pressing assembly 230 can also adjust the position of the battery cell 20, thereby helping to maintain good alignment between the two battery cells 20 used for bonding.

[0056] Specifically, in this embodiment, the horizontal plate 210 is provided with two sliding grooves 211 extending along the first direction, and the two sliding grooves 211 are distributed on both sides of the bearing surface in the first direction. The pressing assembly 230 also includes a connecting seat 233, a transverse drive member 234, a mounting plate 235, and a downward drive member 236.

[0057] There are two connecting seats 233, each passing through one of the two sliding grooves 211. A transverse drive member 234 is located on the side of the horizontal plate 210 facing away from the bearing surface, i.e., below the horizontal plate 210. The two connecting seats 233 are connected to the transverse drive member 234 and can move closer to or further away from each other along a first direction under the drive of the transverse drive member 234. Driven by the transverse drive member 234, the connecting seats 233 can slide in their respective sliding grooves 211, thus moving closer to or further away from each other. Specifically, the transverse drive member 234 can be a pneumatic gripper, and both ends of the gripper can be connected to the two connecting seats 233 respectively through gripper connecting plates (not shown in the figure).

[0058] There are also two mounting plates 235, each located at the end of the two connecting seats 233 away from the transverse drive member 234 and slidably mounted on the horizontal plate 210. Specifically, the mounting plates 235 are located above the horizontal plate 210. A slide rail (not shown) extending along a first direction can be provided on the upper surface of the horizontal plate 210. A slider (not shown) is provided on the slide rail, and a connecting block 237 is fixedly provided on the top of the slider. The mounting plates 235 are fixed to the connecting blocks 237, and the connecting blocks 237 are fixedly connected to the end of the connecting seats 233 away from the transverse drive member 234. Therefore, when the transverse drive member 234 drives the two connecting seats 233 to move closer or further away, it will synchronously drive the two mounting plates 235 to move closer or further away from each other.

[0059] Each mounting plate 235 is provided with a pressing drive 236. A pressure plate 231 is located at the driving end of the pressing drive 236 and can move in a direction perpendicular to the bearing surface under the drive of the pressing drive 236. Specifically, the pressing drive 236 can be a cylinder. Furthermore, a holding block 232 is located on the side of the mounting plate 235 facing the bearing surface. When the holding assembly 230 is activated, the lateral drive 234 first moves the two pressure plates 231 and the two holding blocks 232 closer to the battery cell 20. The holding blocks 232 first contact the battery cell 20 and position it. Then, the pressing drive 236 drives the pressure plates 231 to press down, thus clamping the battery cell 20.

[0060] Please refer to the following: Figure 5 In this embodiment, the core-combining device 10 further includes a pressing mechanism 500, which presses the horizontal plate 210 disposed in one of the flipping mechanisms 200. The pressing mechanism 500 includes a pressure plate 510, which can drive the pressure plate 510 to form a clearance against the bearing surface or press the battery cell 20 against the bearing surface.

[0061] During the flipping process of the horizontal plate 210, the pressure plate 510 creates a clearance between the bearing surfaces, allowing the bearing surfaces of the two horizontal plates 210 to smoothly switch to an overlapping state. After the two battery cells 20 are attached, the combined battery cell 20 will be in a vertical position and located at the center line. At this time, the pressure plate 510 can press the combined battery cell 20 firmly onto one side of the horizontal plate 210. Subsequently, when the bearing surfaces of the two flipping mechanisms 200 return to a parallel state, the combined battery cell 20 returns to a horizontal state along with the horizontal plate 210, thus facilitating unloading.

[0062] Specifically, in this embodiment, a flexible pad 511 is provided on the surface of the pressure plate 510 that contacts the battery cell 20. The flexible pad 511 can be molded from materials such as rubber, silicone, and foam, which can prevent the pressure plate 510 from damaging the battery cell 20 when pressing it.

[0063] Furthermore, in this embodiment, the clamping mechanism 500 also includes a fixed plate 520, a first driving member 530, and a second driving member 540. The fixed plate 520 is fixed to the horizontal plate 210, the first driving member 530 is fixed to the fixed plate 520, the second driving member 540 is disposed at the driving end of the first driving member 530, and the pressure plate 510 is disposed at the driving end of the second driving member 540. The first driving member 530 can drive the second driving member 540 to move in a direction perpendicular to the bearing surface, and the second driving member 540 can drive the pressure plate 510 to move in a direction parallel to the bearing surface.

[0064] Specifically, both the first driving component 530 and the second driving component 540 can be cylinders. The driving end of the first driving component 530 is generally provided with a cylinder connecting plate 550 to facilitate the installation of the second driving component 540.

[0065] The following is combined Figures 1 to 6 A brief description of the operation of the core-combining device 10 is provided below:

[0066] In the initial state, the two flipping mechanisms 200, driven by the first driving mechanism 300, keep the two bearing surfaces parallel with both bearing surfaces facing upwards, facilitating the feeding of the battery cells 20. The two battery cells 20 to be combined are placed on the bearing surfaces of the two flipping mechanisms 200 respectively. The pressing assembly 230 is activated, firstly the holding block 232 positions the battery cell 20, and then the pressing plate 231 presses the battery cell 20 tightly. The two horizontal plates 210 are flipped towards the center under the drive of the first driving mechanism 300 until the bearing surfaces of the two flipping mechanisms 200 are in an overlapping state. At the same time, the second driving mechanism 400 drives the two horizontal plates 210 to move towards the center. After the two battery cells 20 are attached together, the pressing mechanism 500 drives the pressing plate 510 to press the combined battery cell 20 onto one of the horizontal plates 210. Under the drive of the first driving mechanism 300 and the second driving mechanism 400, the battery cells 20 return to their initial positions.

[0067] The aforementioned core-combining device 10 allows two battery cells 20 to be fed to two flipping mechanisms 200 and fixed on their corresponding bearing surfaces. The first drive mechanism 300, when activated, drives the horizontal plate 210 to rotate. When the bearing surfaces of the two flipping mechanisms 200 are aligned, the two battery cells 20 are brought into contact. Simultaneously with the first drive mechanism 300 rotating the horizontal plate 210, the second drive mechanism 400 drives the horizontal plates 210 of the two flipping mechanisms 200 to move closer together along a second direction. This allows the two battery cells 20 to move closer together while flipping towards each other, thus preventing excessive pulling on the tabs 21 during the flipping process and effectively avoiding damage to the tabs 21.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A splicing apparatus characterized by comprising: The utility model relates to a kind of battery cell flipping device, including: Rack; Two turnover mechanisms are installed on the rack, each of the turnover mechanisms includes a cross plate rotatable about an axis parallel to a first direction, the cross plate is provided with a bearing surface for fixing the battery cell, and the cross plates of the two turnover mechanisms can be moved along a second direction perpendicular to the first direction; A first drive mechanism can drive the cross plates to rotate to switch the bearing surfaces of the two turnover mechanisms between a coincident state and a parallel state;And A second drive mechanism can drive the cross plates of the two turnover mechanisms to move towards or away from each other along the second direction; Each of the turnover mechanisms further includes a pressing assembly, the pressing assembly includes a pressing piece, a resisting block, two connecting seats, a horizontal movement drive member and two mounting plates, the cross plate is provided with two sliding grooves extending along the first direction, the two sliding grooves are distributed on both sides of the bearing surface in the first direction, the two connecting seats are respectively provided in the two sliding grooves, the horizontal movement drive member is provided on the side of the cross plate away from the bearing surface, the two connecting seats are in transmission connection with the horizontal movement drive member and can move towards or away from each other along the first direction under the drive of the horizontal movement drive member, the two mounting plates are respectively provided at one end of the two connecting seats away from the horizontal movement drive member and are slidably mounted on the cross plate, each of the mounting plates is provided with a downward pressing drive member, the pressing piece is provided at the driving end of the downward pressing drive member and can move in a direction perpendicular to the bearing surface under the drive of the downward pressing drive member, and the resisting block is provided on the side of the mounting plate towards the bearing surface.

2. The splicing device of claim 1, wherein The rack includes: Two first bottom plates, the cross plates of the two turnover mechanisms are respectively rotatably mounted on the two first bottom plates; A second bottom plate, the two first bottom plates are slidably mounted on the second bottom plate along the second direction; A third bottom plate, the second bottom plate is fixed on the third bottom plate, and the second drive mechanism is provided on the third bottom plate.

3. The splicing device of claim 1, wherein Each of the turnover mechanisms further includes an adsorption plate fixed on the cross plate, and an adsorption surface of the adsorption plate can form a negative pressure, and the bearing surface is located on the adsorption surface of the adsorption plate.

4. The splicing device of claim 3, wherein A groove is formed on the adsorption surface of the adsorption plate, and a presence sensor is arranged in the groove, and the presence sensor is triggered when the battery cell is carried on the bearing surface.

5. The splicing device of claim 1, wherein Further including a pressing mechanism, the pressing mechanism is provided on the cross plate of one of the turnover mechanisms, the pressing mechanism includes a pressing plate, the pressing mechanism can drive the pressing plate to form a clearance on the bearing surface or press the battery cell on the bearing surface.

6. The splicing device of claim 5, wherein The pressing mechanism further includes a fixed plate, a first drive member and a second drive member, the fixed plate is fixed on the cross plate, the first drive member is fixed on the fixed plate, the second drive member is provided at the driving end of the first drive member, the pressing plate is provided at the driving end of the second drive member, the first drive member can drive the second drive member to move in a direction perpendicular to the bearing surface, and the second drive member can drive the pressing plate to move in a direction parallel to the bearing surface.

7. The core assembly of claim 5, the surface of the compression plate that contacts the core is provided with a flexible gasket.

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