Battery tab transport mechanism

Abstract

The utility model belongs to the field of battery production discloses a kind of battery tab transport mechanism.The mechanism includes feeding tray and pre-positioning station, feeding tray is used to place tab, tab includes two opposite outer edges, and tab is misaligned stack setting along its thickness direction, to make the misaligned distribution of the two outer edges of adjacent tab located at the same side;Pre-positioning station includes positioning platform, first in-stock detection unit and second in-stock detection unit, first in-stock detection unit and second in-stock detection unit are spaced apart on positioning platform along preset direction, and along preset direction, the interval distance of first in-stock detection unit and second in-stock detection unit is greater than the size of single tab, first in-stock detection unit and second in-stock detection unit are used to detect outer edge;When and only when first in-stock detection unit and second in-stock detection unit both detect outer edge, battery tab transport mechanism can send tab adhesion information outward, to prevent tab adhesion, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery production, and in particular to a battery tab transport mechanism. Background Technology

[0002] Stacking is one of the important processes in battery manufacturing. It refers to the process of cyclically stacking the positive and negative electrode sheets of a battery to form a battery cell. The stacking quality of the electrode sheets directly affects the performance of the battery cell.

[0003] During the stacking process, only one electrode can be moved at a time during a single adsorption and transfer. Traditional technologies often use suction cup robots to transfer single electrodes. However, since non-stacked positive or negative electrodes are usually stored in multiple stacks, adhesion can occur between identical electrodes when the suction cup robot picks them up, leading to defective products. Existing vertical CCDs cannot detect adhered bipolar tabs. Currently, although there are some bipolar tab detection technologies, they are all performed after soldering, requiring rework of defective products offline, which is time-consuming and costly.

[0004] Therefore, there is an urgent need for a battery tab transport mechanism to solve the problems existing in the prior art. Utility Model Content

[0005] One objective of this invention is to provide a battery tab transport mechanism that can prevent the generation of defective bipolar tabs, save rework time, and reduce production costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery tab transport mechanism includes: a loading tray and a pre-positioning station. The loading tray has a loading area for placing tabs. Each tab includes two outer edges that are distributed opposite to each other along a preset direction. The tabs in the loading area are stacked in a staggered manner along the thickness direction of the tabs, so that the two outer edges of adjacent tabs located on the same side are staggered.

[0008] The pre-positioning station includes a positioning platform, a first material detection unit, and a second material detection unit. The positioning platform is provided with a positioning part for supporting the loading tray. The first material detection unit and the second material detection unit are spaced apart on the positioning platform along the preset direction. The distance between the first material detection unit and the second material detection unit along the preset direction is greater than the size of a single tab. The first material detection unit and the second material detection unit are used to detect the outer edge.

[0009] The battery tab transport mechanism can send tab adhesion information outward only when both the first in-material detection unit and the second in-material detection unit detect the outer edge.

[0010] Preferably, the first in-material detection unit and the second in-material detection unit are located on the same side of the positioning platform.

[0011] Preferably, the pre-positioning station further includes an audible and visual alarm, which is communicatively connected to the first material detection unit and the second material detection unit. The audible and visual alarm is configured to send an audible and visual warning signal outward only when both the first material detection unit and the second material detection unit detect the outer edge.

[0012] Preferably, the electrode tabs include a positive electrode tab and a negative electrode tab;

[0013] The first material detection unit is disposed opposite to the positive electrode tab welding part of the battery, and the second material detection unit is disposed opposite to the negative electrode tab welding part of the battery;

[0014] The battery tab transport mechanism further includes a transport unit and a control unit, wherein:

[0015] The transport unit is used to transport the positive tab and the negative tab respectively. When the first material detection unit detects one of the outer edges of the positive tab, or the second material detection unit detects one of the outer edges of the negative tab, the first material detection unit or the second material detection unit can send a positive position signal to the control unit. When the first material detection unit detects one of the outer edges of the negative tab, or the second material detection unit detects one of the outer edges of the positive tab, the first material detection unit or the second material detection unit can send an offset signal to the control unit.

[0016] The control unit is connected to the transport unit. When the control unit receives the positive position signal, it can control the transport unit to move in a straight line. When the control unit receives the offset signal, it can control the transport unit to move so that the signal emitted by the first material detection unit or the second material detection unit changes from the offset signal to the positive position signal.

[0017] Preferably, the first in-material detection unit and the second in-material detection unit are symmetrically arranged about the central axis of the battery;

[0018] The transport unit includes a linear motion module and a rotating module, both of which are electrically connected to the control unit. The output end of the linear motion module is connected to the rotating module and is used to drive the rotating module to move linearly in a direction closer to or away from the battery. The output end of the rotating module is connected to the positive electrode tab or the negative electrode tab.

[0019] When the control unit receives the offset signal, the rotating module can drive the positive electrode or the negative electrode to rotate 180° around the horizontal direction.

[0020] Preferably, the feeding tray has a groove, and the space within the groove defines the material loading area.

[0021] Preferably, the feeding tray has an air supply channel inside, and the side wall of the groove has an air supply hole connected to the air supply channel so that outside air can be blown into the gap between the adjacent tabs through the air supply hole.

[0022] Preferably, the feeding tray is provided with an array of the grooves.

[0023] Preferably, the device also includes a tab loading station, which includes a loading platform, a lifting drive, and a displacement detection unit. The loading platform is connected to the output end of the lifting drive, and a loading position is provided on the loading platform to support the loading tray. The displacement detection unit is communicatively connected to the lifting drive to detect the lifting displacement of the lifting drive and to send a stop signal to the lifting drive.

[0024] Preferably, the pre-positioning station further includes a support frame and a movable guide rail, the support frame being fixedly installed; the movable guide rail includes a slide rail and a slider, the slide rail being fixedly installed on the support frame and located between the tab loading station and the positioning platform, the slider being slidably connected to the slide rail and used to transport the loading pallet along the slide rail from the loading platform to the positioning platform.

[0025] The beneficial effects of this utility model are:

[0026] This invention provides a battery tab transport mechanism. In practical use, because the distance between the first and second in-feed detection units along a preset direction is greater than the width of a single tab, when there is no tab adhesion, if the first in-feed detection unit detects the outer edge of the tab, the second in-feed detection unit will not detect it, or vice versa. Tab adhesion is indicated only when both the first and second in-feed detection units detect the opposite outer edges of the tab. In this case, the overall size along the preset direction increases, allowing both units to detect the outer edges of the tab. The battery tab transport mechanism can then send out tab adhesion information. This design prevents tab adhesion before welding, facilitating timely handling by workers, saving rework time, and reducing production costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the loading tray and the electrode tabs in the battery electrode tab transport mechanism provided in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the pre-positioning tooling in the battery tab transport mechanism provided by this utility model.

[0029] In the picture:

[0030] 100. Battery; 110. Tab; 1101. Outer edge; 120. Positive tab welding part; 130. Negative tab welding part;

[0031] 1. Loading tray; 11. Loading area; 111. Air inlet; 12. Air supply channel;

[0032] 2. Pre-positioning station; 21. Positioning platform; 22. First in-material detection unit; 23. Second in-material detection unit; 24. Audible and visual alarm; 25. Support frame. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] In the electrode stacking process, only one electrode can be moved at a time during a single adsorption and transfer. Traditional technologies often use suction cup robots to transfer single electrodes. However, since unstacked positive or negative electrodes are usually stored in multiple stacks, adhesion can occur between identical electrodes when the suction cup robot picks them up, leading to defective products. Existing vertical CCDs cannot detect adhered bipolar tabs. Currently, although there are some bipolar tab detection technologies, they are all performed after soldering, requiring rework of defective products offline, which is time-consuming and costly.

[0038] The battery tab transport mechanism provided by this utility model will be described below with reference to the accompanying drawings and specific embodiments. Figures 1 to 2 As shown, the battery tab transport mechanism includes a loading tray 1 and a pre-positioning station 2. In this embodiment, Figure 1 This is a schematic diagram of the structure of the loading tray 1 and the electrode tabs in the battery electrode tab transport mechanism provided in this embodiment of the utility model; Figure 2This is a schematic diagram of the pre-positioning tooling in the battery tab transport mechanism provided by this utility model.

[0039] Specifically, refer to Figure 1 As shown, the loading tray 1 has a loading area 11 for placing tabs 110. Each tab 110 includes two outer edges 1101 arranged opposite each other along a preset direction (refer to the X-axis in the figure). The tabs 110 within the loading area 11 are staggered and stacked along the thickness direction of the tabs 110 (i.e., along the direction perpendicular to the paper surface), so that the two outer edges 1101 of adjacent tabs 110 located on the same side are staggered. In this embodiment, the width direction of the tabs 110 is defined as the preset direction, and the two outer edges 1101 are the long sides of the tabs 110, allowing the tabs 110 within the loading area 11 to be staggered along their own width direction.

[0040] It should be noted that, in this embodiment, the loading tray 1 has a groove, and the space inside the groove defines a material loading area 11, so that the groove can accommodate stacks of electrode tabs 110. This not only increases the number of electrode tabs 110 that can be placed on the loading tray 1 at one time, but also provides a fixing and limiting effect on the electrode tabs 110, preventing the electrode tabs 110 from shaking and scattering or even falling off the loading tray 1 during movement.

[0041] Preferably, in this embodiment, the groove is square, so that the cross-sectional shape of the material-carrying area 11 can match the shape of the electrode tab 110, thereby facilitating the placement of the electrode tab 110. Of course, in other parallel embodiments, the groove can also be designed in other shapes, and this utility model is not limited to this. As long as the electrode tab 11 can be safely and stably placed in the groove, it is within the protection scope of this utility model.

[0042] refer to Figure 2 As shown, in this embodiment, the pre-positioning station 2 includes a positioning platform 21, a first material detection unit 22, and a second material detection unit 23. The positioning platform 21 is provided with a positioning part for supporting the loading tray 1. The first material detection unit 22 and the second material detection unit 23 are arranged at intervals on the positioning platform 21 along a preset direction. The distance between the first material detection unit 22 and the second material detection unit 23 along the preset direction is greater than the size of a single tab 110. The first material detection unit 22 and the second material detection unit 23 are used to detect the outer edge 1101 of the tab 110.

[0043] In practical operation, since the distance between the first material detection unit 22 and the second material detection unit 23 along the preset direction is greater than the width of a single tab 110, when there is no adhesion of the tab 110, if the first material detection unit 22 detects the outer edge 1101 of the tab 110, the second material detection unit 23 will not detect the outer edge 1101 of the tab 110, or if the second material detection unit 23 detects the outer edge 1101 of the tab 110, the first material detection unit 22 will not detect the outer edge 1101 of the tab 110. Adhesion of the tab 110 is indicated only when both the first material detection unit 22 and the second material detection unit 23 detect the two opposite outer edges 1101 of the tab 110. This increases the overall size along the preset direction, allowing both the first material detection unit 22 and the second material detection unit 23 to detect the outer edge 1101 of the tab 110. In this case, the battery tab transport mechanism can send out tab adhesion information. With the above settings, the phenomenon of tab 110 sticking together can be eliminated before the tab 110 is welded, which makes up for the deficiency of existing vertical CCDs that cannot detect sticking bipolar tabs. This makes it easier for staff to handle the problem in a timely manner, saves rework time, and reduces production costs.

[0044] Preferably, in this embodiment, both the first material detection unit 22 and the second material detection unit 23 employ sensors, enabling the first material detection unit 22 and the second material detection unit 23 to identify the outer edge signal of the tab through a non-contact detection method. Compared with contact detection, this avoids mechanical damage to the tab and reduces signal interference during the detection process. In addition, by using sensors, the outer edge position information of the tab can be accurately captured, effectively reducing the error in deviation judgment, thereby significantly improving the detection accuracy and precision.

[0045] refer to Figure 1 As shown, the loading tray 1 has an air supply channel 12 inside, and the side wall of the loading area 11 has an air supply hole 111. The side wall of the loading tray 1 has an air inlet hole. The air inlet hole, the air supply hole 111 and the air supply channel 12 are connected to each other so that outside air can be blown to the gap between adjacent tabs 110 through the air supply hole 111, thereby reducing the phenomenon of tabs 110 sticking together.

[0046] In this embodiment, the loading tray 1 is provided with multiple grooves arranged in an array, so that the loading tray 1 can accommodate and support multiple stacks of electrode sheets at one time, reducing the number of times the loading tray 1 is moved back and forth, thereby improving transportation efficiency. Specifically, refer to Figure 1As shown, the loading tray 1 has 4×3 grooves, and along the preset direction, there is an air supply channel 12 between each two adjacent rows of grooves. Each air supply channel 12 is connected to the grooves on both sides, thereby ensuring that the tabs 110 in each groove of the loading tray 1 do not stick together, thus ensuring the safe and reliable use of the loading tray 1.

[0047] In this embodiment, reference Figure 2 As shown, the first material detection unit 22 and the second material detection unit 23 are set on the same side of the positioning platform 21, so that the staff can adjust the distance between the first material detection unit 22 and the second material detection unit 23 along the preset direction by standing only on one side of the positioning platform 21 according to actual needs, so that the distance between the first material detection unit 22 and the second material detection unit 23 can meet the actual needs, saving time and effort.

[0048] In this embodiment, the tab 110 includes a positive tab and a negative tab; the first material detection unit 22 is disposed opposite to the positive tab welding part 120 on the battery 100, and the second material detection unit 23 is disposed opposite to the negative tab welding part 130 on the battery 100. It can be understood that the positive tab welding part 120 and the negative tab welding part 130 are located on the same side of the battery 100, and the battery 100 is preferably a prismatic battery. In addition, the battery tab transport mechanism also includes a transport unit and a control unit. The transport unit is used to transport the positive tab and the negative tab respectively. When the first material detection unit 22 detects one of the outer edges 1101 of the positive tab, or the second material detection unit 23 detects one of the outer edges 1101 of the negative tab, the first material detection unit 22 or the second material detection unit 23 can send a positive position signal to the control unit. When the first material detection unit 22 detects one of the outer edges 1101 of the negative tab, or the second material detection unit 23 detects one of the outer edges 1101 of the positive tab, the first material detection unit 22 or the second material detection unit 23 can send an offset signal to the control unit. The control unit is connected to the transport unit. When the control unit receives the positive position signal, it can control the transport unit to move in a straight line. When the control unit receives the offset signal, it can control the transport unit to move so that the signal emitted by the first material detection unit 22 or the second material detection unit 23 changes from an offset signal to a positive signal.

[0049] Through the above settings, the tab 110 can be removed from the material loading area 11 by the transported unit, and the offset detection and automatic correction can be completed without manual intervention during transportation. This ensures the precise alignment of the positive and negative tabs with the corresponding welding parts, avoiding problems such as welding failure and poor contact of the battery 100 caused by the offset of the tab 110. At the same time, it improves the automation efficiency of the transport and assembly of the tab 110, adapting to the mass production needs of the battery 100. It can be understood that the offset signal is the aforementioned tab 110 adhesion information.

[0050] The first in-stock detection unit 22 and the second in-stock detection unit 23 are symmetrically arranged about the central axis of the battery 100 (as shown by line a in the figure); the transport unit includes a linear motion module and a rotating module, wherein the linear motion module and the rotating module are electrically connected to the control unit, the output end of the linear motion module is connected to the rotating module and is used to drive the rotating module to move linearly in the direction of approaching or moving away from the battery 100, and the output end of the rotating module is connected to the positive or negative tab; when the control unit receives the offset signal, the rotating module can drive the positive or negative tab to rotate 180° around the horizontal direction.

[0051] Specifically, in this embodiment, the transport unit can be a feeding robot, which includes a mounting base, the aforementioned linear motion module, and the aforementioned rotary module. The linear motion module uses an electric cylinder, fixed to the mounting base of the feeding robot, with its piston rod rigidly connected to the rotary module. The rotary module uses a hollow rotary platform, on which a gripping assembly is fixed. The gripping assembly uses a vacuum suction cup with a flexible rubber pad to avoid damaging the tab 110 during gripping. The control unit can be a PLC. When the PLC acquires an offset signal, it can send a control command to the rotary module through a preset program, causing the tab 110 to rotate 180°. Then, it sends a control command to the linear motion module to transport the rotated tab 110 along a straight line to the corresponding welding part. This process greatly reduces the difficulty of adjusting the position of the tab 110, eliminating the need for the transport unit to repeatedly adjust the position of the tab 110, thereby improving the adjustment efficiency of the tab 110 and the alignment accuracy with the welding part.

[0052] Specifically, in this embodiment, the pre-positioning station 2 further includes an audible and visual alarm 24. The audible and visual alarm 24 is communicatively connected to the first material detection unit 22 and the second material detection unit 23. The audible and visual alarm 24 is configured to send an audible and visual warning signal when and only when both the first material detection unit 22 and the second material detection unit 23 detect the outer edge 1101. Specifically, in this embodiment, the audible and visual alarm 24 is electrically connected to the control unit. When the control unit simultaneously receives signals (i.e., offset signals) from the first material detection unit 22 and the second material detection unit 23, the control unit can immediately send a control command to the audible and visual alarm 24, causing the audible and visual alarm 24 to send an audible and visual warning signal, thereby making the warning information more obvious and effectively shortening the reaction time of the staff.

[0053] Specifically, in this embodiment, the transport mechanism further includes a tab loading station (not shown in the figure), which includes a loading platform, a lifting drive, and a displacement detection unit. The loading platform is connected to the output end of the lifting drive, and a loading position is provided on the loading platform to support the loading pallet 1. The displacement detection unit is communicatively connected to the lifting drive, and can detect the lifting displacement of the lifting drive and send a stop signal to the lifting drive.

[0054] Specifically, in this embodiment, a lifting cylinder is selected as the lifting drive component. The fixed end of the lifting cylinder is fixedly installed, and the output end of the lifting cylinder is connected to the loading platform. A displacement sensor is selected as the displacement detection unit, which can accurately detect the movement displacement value of the loading platform. With the above settings, after the loading pallet 1 carries the tab 110 and is placed in the loading position, the lifting drive component can drive the loading platform to automatically lift. The displacement detection unit monitors the lifting displacement in real time and compares it with the preset height. When the loading platform reaches the preset height, a stop signal is immediately sent to achieve precise stopping of the loading platform. This ensures that the tab 110 in the loading pallet 1 is always at a gripping height that is compatible with the subsequent transportation unit. There is no need to manually adjust the height of the loading pallet 1, which reduces the difficulty of manual operation and avoids the height deviation caused by manual positioning. This provides a stable position reference for the subsequent gripping and detection of the tab 110, thereby effectively improving the automation level and operational reliability of the entire mechanism.

[0055] In this embodiment, the pre-positioning station 2 further includes a support frame 25 and a movable guide rail. The support frame 25 is fixedly installed. The movable guide rail includes a slide rail and a slider. The slide rail is fixedly installed on the support frame 25 and located between the electrode loading station and the positioning platform 21. The slider is slidably connected to the slide rail and is used to transport the loading pallet 1 from the loading platform to the positioning platform 21 along the slide rail.

[0056] Specifically, in this embodiment, support frames 25 are evenly distributed around the positioning platform 21 to ensure that the positioning platform 21 can be stably placed on the support frames 25 and to ensure the flatness of the positioning platform 21. In addition, by setting a moving guide rail, during the process of transporting the electrode tab 110 from the loading position to the positioning part, the feeding device can accurately transport the loading tray 1 to the positioning part along a straight line under the guidance of the slide rail. This ensures that the positive electrode tab on the loading tray 1 is kept on the same horizontal straight line as the positive electrode tab welding part 120 and the first material detection unit 22, and that the negative electrode tab is kept on the same horizontal straight line as the negative electrode tab welding part 130 and the second material detection unit 23. This reduces the frequency of electrode tab 110 position adjustment, increases the probability of the electrode tab 110 successfully connecting to the corresponding welding part in one go, and thus improves the welding efficiency of the electrode tab 110.

[0057] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery tab transport mechanism, characterized in that, include: The loading tray (1) and the pre-positioning station (2) are provided. The loading tray (1) has a material carrying area (11) for placing electrode tabs (110). The electrode tabs (110) include two outer edges (1101) that are distributed opposite to each other along a preset direction. The electrode tabs (110) in the material carrying area (11) are stacked in a staggered manner along the thickness direction of the electrode tabs (110) so that the two outer edges (1101) of adjacent electrode tabs (110) located on the same side are staggered. The pre-positioning station (2) includes a positioning platform (21), a first material detection unit (22), and a second material detection unit (23). The positioning platform (21) is provided with a positioning part for carrying the loading tray (1). The first material detection unit (22) and the second material detection unit (23) are spaced apart on the positioning platform (21) along the preset direction. The distance between the first material detection unit (22) and the second material detection unit (23) along the preset direction is greater than the size of a single tab (110). The first material detection unit (22) and the second material detection unit (23) are used to detect the outer edge (1101). The battery tab transport mechanism can send tab (110) adhesion information outward only when both the first in-material detection unit (22) and the second in-material detection unit (23) detect the outer edge (1101).

2. The battery tab transport mechanism according to claim 1, characterized in that, The first in-material detection unit (22) and the second in-material detection unit (23) are located on the same side of the positioning platform (21).

3. The battery tab transport mechanism according to claim 1, characterized in that, The pre-positioning station (2) also includes an audible and visual alarm (24), which is communicatively connected to the first in-material detection unit (22) and the second in-material detection unit (23). The audible and visual alarm (24) is configured to send an audible and visual warning signal when and only when both the first in-material detection unit (22) and the second in-material detection unit (23) detect the outer edge (1101).

4. The battery tab transport mechanism according to claim 1, characterized in that, The electrode tab (110) includes a positive electrode tab and a negative electrode tab; The first in-stock detection unit (22) is disposed opposite to the positive electrode tab welding part (120) of the battery (100), and the second in-stock detection unit (23) is disposed opposite to the negative electrode tab welding part (130) of the battery (100); The battery tab transport mechanism further includes a transport unit and a control unit, wherein: The transport unit is used to transport the positive electrode and the negative electrode respectively. When the first material detection unit (22) detects one of the outer edges (1101) of the positive electrode, or the second material detection unit (23) detects one of the outer edges (1101) of the negative electrode, the first material detection unit (22) or the second material detection unit (23) can send a positive position signal to the control unit. When the first material detection unit (22) detects one of the outer edges (1101) of the negative electrode, or the second material detection unit (23) detects one of the outer edges (1101) of the positive electrode, the first material detection unit (22) or the second material detection unit (23) can send an offset signal to the control unit. The control unit is connected to the transport unit. When the control unit receives the positive position signal, it can control the transport unit to move in a straight line. When the control unit receives the deviation signal, it can control the transport unit to move so that the signal emitted by the first material detection unit (22) or the second material detection unit (23) changes from the deviation signal to the positive position signal.

5. The battery tab transport mechanism according to claim 4, characterized in that, The first in-stock detection unit (22) and the second in-stock detection unit (23) are symmetrically arranged about the central axis of the battery (100); The transport unit includes a linear motion module and a rotating module. Both the linear motion module and the rotating module are electrically connected to the control unit. The output end of the linear motion module is connected to the rotating module and is used to drive the rotating module to move linearly in a direction close to or away from the battery (100). The output end of the rotating module is connected to the positive electrode tab or the negative electrode tab. When the control unit receives the offset signal, the rotating module can drive the positive electrode or the negative electrode to rotate 180° around the horizontal direction.

6. The battery tab transport mechanism according to claim 1, characterized in that, The loading tray (1) has a groove, and the space in the groove defines the loading area (11).

7. The battery tab transport mechanism according to claim 6, characterized in that, The loading tray (1) has an air supply channel (12) inside, and the side wall of the groove is provided with an air supply hole (111). The air supply hole (111) is connected to the air supply channel (12) so that outside air can be blown into the gap of the adjacent tab (110) through the air supply hole (111).

8. The battery tab transport mechanism according to claim 6, characterized in that, The feeding tray (1) is provided with a plurality of grooves arranged in an array.

9. The battery tab transport mechanism according to claim 1, characterized in that, It also includes a tab loading station, which includes a loading platform, a lifting drive and a displacement detection unit. The loading platform is connected to the output end of the lifting drive, and a loading position is provided on the loading platform. The loading position is used to carry the loading tray (1). The displacement detection unit is communicatively connected to the lifting drive and is used to detect the lifting displacement of the lifting drive and can send a stop signal to the lifting drive.

10. The battery tab transport mechanism according to claim 9, characterized in that, The pre-positioning station (2) also includes a support frame (25) and a moving guide rail. The support frame (25) is fixedly installed. The moving guide rail includes a slide rail and a slider. The slide rail is fixedly installed on the support frame (25) and is located between the tab loading station and the positioning platform (21). The slider is slidably connected to the slide rail and is used to transport the loading pallet (1) from the loading platform to the positioning platform (21) along the slide rail.

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