Layering device for battery cell tabs

Abstract

The utility model relates to a layering device for battery cell tabs, which comprises a fixing part, a horizontal driving part, a vertical driving part, a shifting fork fixing part and a shifting fork, a guide rail is arranged on the fixing part, and the shifting fork fixing part is movably arranged on the guide rail; the shifting fork is fixedly connected with the shifting fork fixing piece, the horizontal driving piece is connected with the shifting fork fixing piece, and the horizontal driving piece is used for driving the shifting fork fixing piece to move along the guide rail, so that the shifting fork is driven by the shifting fork fixing piece to move to a preset position; the vertical driving piece is fixedly connected with the fixing piece and used for driving the fixing piece to move in the vertical direction; the shifting fork is provided with a connecting section and a lifting section which are connected with each other, one end of the connecting section is connected to the shifting fork fixing piece, and the lifting section is used for lifting part of tabs in the battery cell upwards under the driving of the vertical driving piece so as to realize the layering of the tabs.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a layering device for battery core tabs. Background Art

[0002] With the development of the new energy industry, batteries are widely used due to their many advantages such as multiple cycles, cyclic charging and discharging, and environmental friendliness. In the process of battery production and manufacturing, the welding link between the tab and the adapter is a key link. The current welding method is to directly weld the tab through the adapter. The tabs welded to the root of the tab have a lot of redundancy, which can easily lead to poor tension and tearing of the root of the tab during the welding process, affecting the quality of the battery cell. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stratification device for battery cell tabs, which can automatically realize tab stratification for use in subsequent centering welding process and can effectively avoid tab redundancy, tab damage and the like.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is a stratification device for battery cell pole ears, comprising: a fixing member, a horizontal driving member, a vertical driving member, a fork fixing member and a fork, wherein a guide rail is arranged on the fixing member, and the fork fixing member is movably arranged on the guide rail; the fork is fixedly connected to the fork fixing member, and the horizontal driving member is connected to the fork fixing member, and the horizontal driving member is used to drive the fork fixing member to move along the guide rail, so that the fork is driven by the fork fixing member to move to a preset position; the vertical driving member is fixedly connected to the fixing member, and is used to drive the fixing member to move in a vertical direction; the fork has a connecting section and a lifting section that are connected to each other, one end of the connecting section is connected to the fork fixing member, and the lifting section is used to lift part of the pole ears in the battery cell upwards under the drive of the vertical driving member to achieve pole ear stratification.

[0005] In one embodiment of the present application, the angle between the connecting section and the lifting section is greater than or equal to 90 degrees.

[0006] In one embodiment of the present application, the connecting segment includes a plurality of sub-connecting segments, and the plurality of sub-connecting segments are vertically connected to each other.

[0007] In one embodiment of the present application, the lifting segment includes a plurality of sub-lifting segments, the sub-lifting segments include a horizontal lifting segment located at the end, the horizontal lifting segment extends in a horizontal direction, and the horizontal lifting segment is used to directly contact the pole ear when lifting the pole ear.

[0008] In one embodiment of the present application, the angle between adjacent sub-raising sections is an obtuse angle.

[0009] In one embodiment of the present application, a fork support is further included, and the fork support is fixedly connected to the fork fixing member and abuts against the fork.

[0010] In one embodiment of the present application, a pad is also included for supporting the battery cell.

[0011] In one embodiment of the present application, the fixing member is arranged above the pad.

[0012] In one embodiment of the present application, the number of horizontal driving members, fork fixing members, and forks is equal to the number of pole ears, and the horizontal driving members correspond to the fork fixing members one by one.

[0013] In one embodiment of the present application, a pole lug distance detection device is also included, which is used to detect the pole lug distance information of a battery cell. The pole lug distance detection device is communicatively connected to the horizontal driving component, and is used to transmit the pole lug distance information to the horizontal driving component. The horizontal driving component is used to determine the moving distance of the fork fixing component according to the pole lug distance information and drive the fork fixing component to move.

[0014] The stratification device of the present application can drive the fork to move to the position of the corresponding lug according to the actual lug distance information of the current battery cell through the horizontal driving member, so that the upper lug can be accurately lifted to layer the lug, which is beneficial to the subsequent center welding and prevents lug redundancy. By setting the fork with a connecting section and a lifting section, the interference between the fork and the pad and the battery cell body can be effectively avoided to prevent the lug from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 is a schematic diagram of a battery cell to be layered by a layering device according to an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of a scene including a tab distance detection device in a layering device according to an embodiment of the present application;

[0018] Figure 3 is a front schematic diagram of a layering device according to an embodiment of the present application;

[0019] Figure 4 is a schematic diagram of the back side of a layered device according to an embodiment of the present application;

[0020] Figure 5 It is a schematic diagram of the effect after the tab is layered according to the layering device of the present application;

[0021] Figure 6is a simplified schematic diagram of a shift fork in a layering device according to an embodiment of the present application;

[0022] Figure 7 It is a schematic diagram of the structure of a shift fork in a layering device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0025] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0026] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. However, the size, material, shape, and relative configuration of the constituent components recorded in the embodiments, if no specific record is given, are not intended to limit the scope of the present invention to this, but are merely illustrative examples. The size or positional relationship of the components shown in the drawings is sometimes exaggerated for the purpose of clarifying the description. Furthermore, in the following description, for the same name and symbol, it is appropriate to omit the detailed description of the same or homogeneous components. Furthermore, the various elements constituting the present invention may be a form in which the same components constitute multiple elements so that one component can serve as multiple elements, or conversely, multiple components may share the function of one component to achieve the same effect. In addition, the contents described in some embodiments and implementations may also be used in other embodiments, implementations, etc. In addition, in this specification, "upper" is not limited to the case where it is formed in contact with the upper surface, but also includes the case where it is formed separately on the upper side, and is also used to include the meaning of having an intervening layer between layers.

[0028] Compared to directly welding the adapter to the pole lug, the present application can improve the problems of poor tension and tearing at the root of the pole lug caused by the original welding method by layering the pole lug so that the adapter can be welded in the center between the two layers of pole lugs. Furthermore, it can also increase the available space inside the battery cell casing and optimize the excessive scrapping of raw materials caused by the length of the pole lug. The layering device of the present application is used to automatically layer the pole lugs using equipment, and then place the adapter between the two layers of pole lugs after layering by a subsequent welding process, and then perform center welding. It should be noted that the pole lugs here are a general term, and each pole lug includes multiple layers of single pole lugs.

[0029] This specification will explain the process logic of layering the battery cell tabs and is not used to limit the objects and scope of protection required.

[0030] Figure 1 Schematic diagram of a cell to be layered by a layering device according to an embodiment of the present application. Figure 1 As shown, there are two tabs on one side of the battery cell 100, one of which is a positive tab 110 and the other is a negative tab 120. The two tabs extend from the body of the battery cell 100. In order to perform subsequent center welding, the present application makes a special design for the tabs of the battery cell 100, that is, half of the tabs are longer and the other tabs are shorter. Figure 1 In the positive electrode tab 110, the upper electrode tab 111 is longer and the lower electrode tab 112 is shorter, so there is a length difference between the upper electrode tab 111 and the lower electrode tab 112. The negative electrode tab 120 is the same, including the upper electrode tab 121 with a longer length and the lower electrode tab 122 with a shorter length. The present application does not limit the number of layers of the upper electrode tabs 111, 121 and the lower electrode tabs 112, 122.

[0031] Figure 1 The center distance D1, the side distances D2 and D3 of the tabs are also indicated, where the center distance D1 is the shortest distance between the two tabs, the side distance D2 is the distance between the positive tab 110 and the nearest side of the battery cell, and the side distance D3 is the distance between the negative tab 120 and the nearest side of the battery cell. D2 and D3 may be equal or different.

[0032] For cells of the same specification, the above-mentioned lug center distance D1, lug side distances D2, and D3 should be the same. However, there are certain errors in actual situations. Therefore, when the lugs are layered using the stratification device of the present application, in order to align the position of the shift fork with the position of the lug, the lug center distance D1, lug side distances D2, and D3 can be detected using a lug distance detection device to obtain D1, D2, and D3 corresponding to each single cell. This information is collectively referred to as lug distance information. The obtained lug distance information is then transmitted to the stratification device.

[0033] Specifically, Figure 2 The figure shows a schematic diagram of a scene including a tab distance detection device in a layered device according to an embodiment of the present application. Figure 2 As shown, in this embodiment, the tab distance detection device is specifically implemented as a camera, and further, the camera is a CCD camera. Figure 2 Two cameras 210 are shown in FIG. In this scenario, the battery cell 100 is set on a pad 220, and the camera 210 is set on a support frame 230, and the lens of the camera 210 is aimed at the tab of the battery cell 100 below. The tab center distance D1, tab edge distance D2, and tab edge distance D3 of the battery cell 100 are obtained by machine vision. Among them, only D1, only D2 or D3, or all D1 to D3 can be obtained as needed.

[0034] It should be noted that the present application does not limit the number of cameras 210. If one camera 210 is used, the tab center distance D1, tab edge distances D2, and D3 of the battery cell 100 can be obtained simultaneously within its field of view. Figure 2 Only one battery cell 100 is shown. In application, the present application does not limit the number of battery cells 100 for which the tab distance information can be obtained at one time. Preferably, in actual production, two battery cells 100 are arranged on the backing plate 220 relative to each other, that is, the tabs of the two battery cells 100 are facing each other and arranged adjacently. Therefore, the tab distance detection device can obtain the tab distance information of two battery cells 100 at one time.

[0035] The lug distance detection device has a data communication function, and can transmit the lug distance information to the Internet, for example, transmit the lug distance information to a control host, a cloud, a server, etc. through a wired or wireless communication method, or can also directly communicate data with the horizontal driving member in the layered device, and directly transmit the lug distance information to the horizontal driving member, so that the horizontal driving member determines the moving distance of the fork fixing member according to the lug distance information, and drives the fork fixing member to move. The details will be described later.

[0036] Figure 3 It is a front schematic diagram of a layered device according to an embodiment of the present application. Figure 4 is a schematic diagram of the back side of a layered device according to an embodiment of the present application. Figure 3 and Figure 4 As shown, the layering device 300 includes a fixing member 310, horizontal driving members 321, 322, a vertical driving member (not shown), fork fixing members 331, 332 and forks 341, 342. The fixing member 310 can be a vertically arranged fixing plate, such as Figure 3 As shown, it can be fixedly mounted on the machine platform. Figure 3 In the embodiment, one side of the fixing member 310 faces outward, Figure 4 The other side of the fixing member 310 is shown. Although it is called the front side and the back side, it is not used to limit the placement position. The pad 220 is located below the fixing member 310 and is used to support the battery cell 100.

[0037] In some embodiments, the number of horizontal driving members, fork fixing members, and forks is equal to the number of pole lugs, and the horizontal driving members correspond to the fork fixing members one by one. Figure 3 and Figure 4 As shown, the stratification device 300 is used to simultaneously stratify the two tabs 110 and 120 of the battery cell 100, wherein the horizontal driving member 321, the fork fixing member 331, and the fork 341 all correspond to the tab 110, and the horizontal driving member 322, the fork fixing member 332, and the fork 342 all correspond to the tab 120. In other words, for each tab, its corresponding fork can be driven by the corresponding horizontal driving member and independently moved in the horizontal direction to move to the position most suitable for stratifying the tab.

[0038] It should be noted that the present application does not limit the number of horizontal driving members, fork fixing members, and forks. In other embodiments, one horizontal driving member may correspond to two fork fixing members and forks, and simultaneously drive the two forks to move.

[0039] The two tabs 110 and 120 are described separately below.

[0040] For tab 110, refer to Figure 3As shown, the horizontal driving member 321 is arranged on the fixing member 310 near the upper right position. In this embodiment, the horizontal driving member 321 is specifically implemented as an electric cylinder, and the left side thereof is a retractable movable end 3211. Under the drive of the electric cylinder motor, the movable end 3211 can be retracted and moved according to a set distance. The base 3212 of the electric cylinder is fixedly connected to the fixing member 310, so that the electric cylinder is fixed on the fixing member 310. Figure 4 A guide rail 351 is provided on the back of the fixing member 310, which may be a groove or a protrusion. The fork fixing member 331 is movably provided on the guide rail 351. Specifically, the layering device 300 may further include a guide rail slider (not shown), which is provided on the guide rail 351, and the fork fixing member 331 is fixedly connected to the guide rail slider, for example, by screwing. Figure 3 and Figure 4 The movable end 3211 is fixedly connected to the fork fixing member 331 through the connecting member 3213. Therefore, when the movable end 3211 telescopically moves, it will drive the fork fixing member 331 to move along the guide rail 351. In some embodiments, the movable end 3211 is connected to the fixed connecting member 3213 through a pin 3214.

[0041] It can be understood that the length of the guide rail 351 can be set according to actual needs and is adapted to the moving range of the movable end 3211. The fork 341 is arranged below the fork fixing member 331. In this embodiment, a fork support member 3411 can also be provided, which is fixedly connected to the fork fixing member 331, is also arranged below the fork fixing member 331, and abuts against a part of the fork 341, and is used to provide support for the fork 341, which is conducive to the stable movement of the fork 341.

[0042] The horizontal driving member 322 provided for the pole lug 120 is provided on the back of the fixing member 310, and the corresponding guide rail 352 and the fork fixing member 332 are also provided on the back of the fixing member 310. The horizontal driving member 322 can also be specifically implemented as an electric cylinder, and is arranged in parallel on the back of the horizontal driving member 321, and the base 3222 of the horizontal driving member 322 can be aligned with the base 3212 of the horizontal driving member 321. The movable end 3221 of the horizontal driving member 322 can be connected to the fork fixing member 332 through a connecting member 3223. Figure 4 As shown, the height of the guide rail 352 is substantially the same as that of the horizontal driving member 322, so the connecting member 3223 is directly located between the movable end 3221 and the fork fixing member 332 in the horizontal direction. A fork supporting member 3421 is also provided for the pole lug 120 to support the fork 342.

[0043] according to Figure 3 and Figure 4In the embodiment shown, the two horizontal driving members 321, 322 are arranged at the same end of the fixing member 310, and the two fork fixing members 331, 332 are arranged at the other corresponding end. Such a structural design is conducive to independently controlling the horizontal positions of the two forks 341, 342.

[0044] In some embodiments, the horizontal driving members 321 and 322 may also be implemented as cylinders.

[0045] In the embodiment of the present application, the horizontal driving members 321 and 322 have a data communication function, and can receive data information transmitted from the outside, such as directly obtaining the tab distance information from the control host, the cloud, the server side, or from the tab distance detection device described above, so as to determine the distance to be moved by the active ends 3211 and 3221 according to the tab distance information, so that the forks 341 and 342 can correspond to the positions of the two tabs of the battery cell, so that the tabs can be directly and accurately layered. For the embodiment that does not include the tab distance detection device, the tab distance information can be set manually, such as directly setting the tab distance information on the horizontal driving members 321 and 322, or setting the tab distance information through the human-computer interaction interface of the control host, and then transmitting it to the horizontal driving members 321 and 322.

[0046] Specifically, initial distance information can be pre-stored in the horizontal driving members 321 and 322. The initial distance information is related to the initial position of the forks 341 and 342. After obtaining the current pole ear distance information, the distances that the active ends 3211 and 3221 need to move are obtained by calculation or comparison, and the movement of the active ends 3211 and 3221 is controlled based on the distances.

[0047] The vertical driving member is not shown in the figure. Specifically, the vertical driving member is fixedly connected to the fixing member 310 and is used to drive the fixing member 310 to move up and down in the vertical direction. It can be understood that when the fixing member 310 moves up and down, the horizontal driving members 321, 322, the fork fixing members 331, 332 and the forks 341, 342 fixed thereon are simultaneously driven to move up and down. Therefore, when the horizontal driving members 321, 322 drive the forks 341, 342 to reach the corresponding positions of the pole lugs respectively, the vertical driving member drives the fixing member 310 to move upward, so that a part of the pole lugs in the pole lugs can be lifted, and the pole lugs can be layered.

[0048] Figure 5 This is a schematic diagram of the effect after the tab is layered according to the layering device of the present application. Figure 5As shown, the upper layer of the tab 111 and the lower layer of the tab 112 are separated by the fork 341, and there is a clear gap between them; at the same time, the upper layer of the tab 121 and the lower layer of the tab 122 are separated by the fork 342, and there is a clear gap between them. In the subsequent process, the adapter can be inserted into the gap by the welding device, and the adapter and the tab are welded.

[0049] It should be noted that, as mentioned above, if the welding objects are two oppositely arranged battery cells, that is, the pole ears of the two battery cells are placed opposite to each other, the layering device may include 4 horizontal driving members and 4 shift forks, which correspond to the 4 pole ears of the two battery cells respectively.

[0050] The shift fork in the layering device of the present application is described below.

[0051] Figure 6 FIG. 1 is a simplified schematic diagram of a shift fork in a layering device according to an embodiment of the present application. Figure 6 As shown, it shows a side view of a shift fork 600, which has a connecting section 610 and a lifting section 620 connected to each other, one end 611 of the connecting section 610 is connected to a shift fork fixing member mentioned above, and the lifting section 620 is used to lift part of the tabs in the battery cell upward under the drive of the vertical driving member to achieve tab stratification. The connecting section 610 can be specifically a plate extending in the vertical direction, and its function is to connect the shift fork fixing member and the lifting section 620. The present application does not limit the extension direction and length of the connecting section 610. Figure 6 The connecting section 610 in the embodiment extends in a vertical direction. In other embodiments, the extending direction may be inclined, for example, one end 611 thereof is inclined to the left. The lifting section 620 is specifically a plate extending in a certain direction. When the shift fork 600 is moved into position by the horizontal driving member, the lifting section 620 is located below the upper pole ear. Figure 6 In the embodiment, the lifting section 620 is tilted downward, and an angle α is formed between the connecting section 610 and the lifting section 620. In some embodiments, the angle α is greater than or equal to 90 degrees. An angle α greater than or equal to 90 degrees can prevent the tab from directly touching the vertical connecting section 610 to cause damage, and can also further increase the distance between the lower end of the connecting section 610 and the pad 220 to prevent the fork 600 from interfering with the pad 220. Preferably, the angle α is an obtuse angle, for example, in the range of 150 to 170 degrees. It should be noted that the angle α is the angle formed by the direct connection between the connecting section 610 and the lifting section 620.

[0052] Figure 7 is a schematic diagram of the structure of a shift fork in a layering device according to an embodiment of the present application. The shift fork may be Figure 3 and Figure 4Any one of the forks 341 and 342. It should be noted that the specific structures of the forks 341 and 342 can be the same or different. Figure 7 As shown, the fork 700 includes a connecting section and a lifting section, wherein the connecting section includes a plurality of sub-connecting sections, in this embodiment, there are three sub-connecting sections 711, 712, 713, and the plurality of sub-connecting sections 711, 712, 713 are vertically connected to each other, wherein the sub-connecting section 713 is directly connected to the lifting section, and there is an angle α between the sub-connecting section 713 and the lifting section, and the angle α is greater than or equal to 90 degrees. Furthermore, the lifting section of the fork 700 includes a plurality of sub-lifting sections, in this embodiment, there are two sub-lifting sections 721, 722, wherein the sub-lifting section 722 is located at the end and extends in the horizontal direction, which is called a horizontal lifting section, and the horizontal lifting section is used to directly contact the pole ear when lifting the pole ear. The horizontal lifting section is conducive to better lifting the upper pole ear. The angle β between the two adjacent sub-lifting sections 721, 722 is an obtuse angle. The range of the angle β is, for example, between 150 degrees and 170 degrees.

[0053] Combination Figure 5 and Figure 7 As shown, the shift fork of the present application can have a larger avoidance space in the vertical direction by setting a connecting section including a plurality of sub-connecting sections that are vertically connected to each other, so as to avoid touching the body of the battery cell 100 and the pad 220. At the same time, by setting a lifting section including a plurality of sub-lifting sections, and the angles between adjacent sub-lifting sections are obtuse angles, sufficient avoidance space is provided for the upper pole ears 111 and 121 in the horizontal direction, so as to avoid the upper pole ears 111 and 121 touching the connecting section of the shift fork, causing the pole ears to be bent or broken.

[0054] According to the stratification device of the present application, the actual distance information of the pole lugs of the current battery cell can be used to drive the fork to move to the position of the corresponding pole lug through the horizontal driving member, so that the upper pole lug can be accurately lifted and the pole lug can be stratified, which is conducive to the subsequent center welding. The use of the stratification device can effectively avoid interference with the pad and the battery cell body and prevent the pole lug from being damaged.

[0055] It should be noted that the layered device illustrated in the above embodiment is applicable to the case where there are two pole ears on one side of the battery cell. The layered device in the present application can be applicable to the case where there are one or more pole ears on one side of the battery cell. Specifically, the fork fixing member and the fork can be adaptively selected according to the number of pole ears. Usually, one pole ear corresponds to a group of fork fixing members and forks, and the number of horizontal driving members can be selected according to the number of fork fixing members and forks. One horizontal driving member can be corresponding to one group of fork fixing members and forks, or one horizontal driving member can be corresponding to multiple groups of fork fixing members and forks. Other structures can also be adaptively simply selected and adjusted, which are not listed here one by one.

[0056] Although the above disclosure discusses some currently considered useful utility model embodiments through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments, but rather, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the utility model embodiments. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0057] Similarly, it should be noted that in order to simplify the description of the utility model disclosure and thus facilitate the understanding of one or more utility model embodiments, in the above description of the utility model embodiments, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the utility model object requires more features than those mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0058] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used to describe the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of the scope of the utility model in some embodiments are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

Claims

1. A layering device for a battery cell tab, characterized in that: include: A fixing member, a horizontal driving member, a vertical driving member, a shift fork fixing member and a shift fork, wherein a guide rail is provided on the fixing member, and the shift fork fixing member is movably provided on the guide rail; the shift fork is fixedly connected to the shift fork fixing member, the horizontal driving member is connected to the shift fork fixing member, and the horizontal driving member is used to drive the shift fork fixing member to move along the guide rail, so that the shift fork is driven by the shift fork fixing member to move to a preset position; the vertical driving member is fixedly connected to the fixing member, and is used to drive the fixing member to move in a vertical direction; the shift fork has a connecting section and a lifting section that are connected to each other, one end of the connecting section is connected to the shift fork fixing member, and the lifting section is used to lift part of the pole ears in the battery cell upwards under the drive of the vertical driving member to achieve pole ear stratification.

2. The layering device according to claim 1, characterized in that The angle between the connecting section and the lifting section is greater than or equal to 90 degrees.

3. The layering device according to claim 1, characterized in that The connecting segment includes a plurality of sub-connecting segments, and the plurality of sub-connecting segments are vertically connected to each other.

4. The layering device according to claim 1, characterized in that The lifting segment includes a plurality of sub-lifting segments, wherein the sub-lifting segments include a horizontal lifting segment located at an end portion, the horizontal lifting segment extends in a horizontal direction, and the horizontal lifting segment is used for directly contacting the pole lug when lifting the pole lug.

5. The layering device according to claim 4, characterized in that The included angle between adjacent sub-raising sections is an obtuse angle.

6. The layering device according to claim 1, characterized in that It also includes a shift fork support member, which is fixedly connected to the shift fork fixing member and abuts against the shift fork.

7. The layering device according to claim 1, characterized in that Also included is a backing plate for supporting the battery core.

8. The layering device according to claim 7, characterized in that The fixing member is arranged above the backing plate.

9. The layering device according to claim 1, characterized in that The number of the horizontal driving member, the shift fork fixing member and the shift forks is equal to the number of the pole ears, and the horizontal driving member corresponds to the shift fork fixing member one by one.

10. The layering device according to claim 1, characterized in that It also includes a pole lug distance detection device for detecting the pole lug distance information of a battery cell. The pole lug distance detection device is communicatively connected to the horizontal driving component for transmitting the pole lug distance information to the horizontal driving component. The horizontal driving component is used to determine the moving distance of the fork fixing component according to the pole lug distance information and drive the fork fixing component to move.

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