Pole lug positioning equipment and method

Abstract

The invention belongs to the technical field of batteries, and discloses a tab positioning device and method.The tab positioning device comprises a rack, a rotating assembly and a positioning assembly, the rotating assembly comprises a rotating driving part, and the driving end of the rotating driving part is in driving connection with a battery shell; the positioning assembly comprises a first positioning driving part, a second positioning driving part, a first correlation sensor and a second correlation sensor, and the first positioning driving part is in driving connection with the first correlation sensor so as to drive the first correlation sensor to move to the outer side of the battery shell and close to the opening of the battery shell; the second positioning driving part is in driving connection with the second correlation sensor so as to drive the second correlation sensor to move into the battery shell, and the rotating driving part can drive the battery shell to rotate, so that the first tab can move between the first transmitter and the first receiver, and the second tab can move between the second transmitter and the second receiver; the tab positioning equipment can improve the efficiency and precision of detecting the position of the second tab.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a tab positioning device and method. Background Art

[0002] A cylindrical battery generally comprises a shell, an electrode group and a top cover, wherein the electrode group is arranged in the shell, the positive electrode ear of the electrode group extends out of the shell and is welded to the positive electrode terminal on the top cover, and the negative electrode ear of the electrode group is located in the shell and is welded to the inner wall of the shell.

[0003] At present, the following three methods are commonly used to weld the negative electrode ear to the inner wall of the shell: (1) After the electrode assembly is placed in the shell, the negative electrode ear in the shell is manually visually inspected and the shell is manually rotated so that the negative electrode ear is aligned with the welding head and then welded. This method is inefficient and has high labor input costs; (2) Before the electrode assembly is placed in the shell, the negative electrode ear is first welded and positioned, then the electrode assembly is placed in the shell, and finally the negative electrode ear and the inner wall of the shell are welded. The disadvantage of this method is that during the process of the electrode assembly being placed in the shell, the position of the electrode assembly will be offset, which greatly reduces the positioning accuracy of the negative electrode ear before the electrode assembly is placed in the shell, resulting in a large deviation between the positioning position of the negative electrode ear and the actual welding position, which cannot meet the welding position accuracy requirements; (3) After the electrode assembly is placed in the shell, light is applied at the shell opening, and a charge-coupled device (CCD) is used to detect the position of the negative electrode ear in the shell. However, since the negative electrode ear is short and thin, it is very easy to deform, bend or twist, which will affect the accuracy of the CCD detection and cannot meet the welding position accuracy requirements.

[0004] Therefore, it is urgent to propose a tab positioning device and method to solve the above technical problems. Summary of the invention

[0005] The first object of the present invention is to provide a tab positioning device that can improve the efficiency and accuracy of detecting the position of the second tab.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Tab positioning equipment, including:

[0008] frame;

[0009] A rotating assembly, the rotating assembly comprising a rotating driving member, the rotating driving member being arranged on a frame, the driving end of the rotating driving member being used for driving connection with a battery shell, a pole group being arranged in the battery shell, a first pole ear and a second pole ear being arranged at one end of the pole group facing the opening of the battery shell, the first pole ear extending out of the opening of the battery shell, and the second pole ear being arranged in the battery shell;

[0010] A positioning assembly, the positioning assembly comprising a first positioning drive member, a second positioning drive member, a first through-beam sensor and a second through-beam sensor, the first positioning drive member and the second positioning drive member are both arranged on a frame, a driving end of the first positioning drive member is drivingly connected to the first through-beam sensor to drive the first through-beam sensor to move to the outside of the battery shell and close to the opening of the battery shell, and a driving end of the second positioning drive member is drivingly connected to the second through-beam sensor to drive the second through-beam sensor to move into the battery shell;

[0011] The rotating drive member is used to drive the battery shell to rotate with the axis of the battery shell as the rotating axis, so that the first pole ear can move between the first transmitter and the first receiver of the first matching sensor, and the second pole ear can move between the second transmitter and the second receiver of the second matching sensor.

[0012] Optionally, the rotating assembly further includes a clamping structure, which is connected to the driving end of the rotating driving member, and the clamping structure is configured to be detachably connected to the battery shell.

[0013] Optionally, the tab positioning device further includes a blanking assembly, which is used to remove the battery shell from the clamping structure.

[0014] Optionally, the clamping structure is provided with a first through hole, the rotating driving member is a hollow shaft motor, the hollow shaft motor comprises a housing and a hollow shaft rotatably connected to the housing, the clamping structure is arranged on the hollow shaft, the housing is provided with a second through hole, and the first through hole, the second through hole and the hollow shaft are coaxial and connected;

[0015] The unloading assembly includes an unloading drive member and a pushing member. The unloading drive member is arranged on the frame. The driving end of the unloading drive member is connected to the pushing member. The unloading drive member can drive the pushing member from one end of the hollow shaft away from the clamping structure, pass through the second through hole, the hollow shaft and the first through hole, and push the battery shell away from the clamping structure.

[0016] Optionally, the frame includes a first supporting part, a second supporting part and a connecting part, the rotating driving member, the first positioning driving member and the second positioning driving member are all arranged on the first supporting part, the second supporting part is used to be installed on an external device, and the first supporting part and the second supporting part are connected by the connecting part.

[0017] Optionally, the frame also includes a locking structure, the first supporting portion is parallel to the horizontal plane, the second supporting portion includes a first end and a second end arranged opposite to each other, the distance between the second supporting portion and the first supporting portion gradually increases along the direction pointing from the first end to the second end, the connecting portion is movably connected to the second supporting portion along a third direction, and the locking structure is used to lock the position of the connecting portion on the second supporting portion, and the third direction is parallel to the direction pointing from the first end to the second end.

[0018] Optionally, the connecting part includes a first side wall and a second side wall, which are respectively located on opposite sides of the connecting part and are not parallel, and the angle between the first side wall and the second side wall is d. The first side wall is detachably connected to the first supporting part, and the second side wall is detachably connected to the second supporting part. There are multiple connecting parts, and d of the multiple connecting parts are not equal.

[0019] A second object of the present invention is to provide a tab positioning method that can improve the efficiency and accuracy of detecting the position of the second tab.

[0020] To achieve this object, the present invention adopts the following technical solutions:

[0021] The tab positioning method adopts the above-mentioned tab positioning device and comprises the following steps:

[0022] S1, rotating the battery case in a first direction and moving the first beam sensor to a first position, the first position being outside the battery case and close to the opening of the battery case, when the first light beam emitted by the first transmitter is blocked by the first pole ear and cannot reach the first receiver, the battery case stops rotating;

[0023] S2, moving the second beam sensor to a second position, the second position being inside the battery housing, and the second position being upstream of the first position in the first direction;

[0024] S3. The battery case is rotated in the first direction again. When the second light beam emitted by the second transmitter is blocked by the second pole ear and cannot reach the second receiver, the battery case stops rotating.

[0025] Optionally, the direction in which the second pole tab points to the first pole tab along the circumference of the battery shell includes a first direction and a second direction, and along the first direction, an angle between the second pole tab and the first pole tab is a;

[0026] Also included between step S1 and step S2:

[0027] The battery case is rotated in the second direction by an angle b and then the rotation is stopped, where b<a.

[0028] Optionally, step S3 further includes:

[0029] If the battery case rotates by an angle c in step S3, and the second light beam emitted by the second transmitter can always reach the second receiver during this process, the battery case stops rotating, and c=a.

[0030] Beneficial effects of the present invention:

[0031] The present invention provides a tab positioning device, in which a rotating drive member drives the battery shell to rotate, and a second positioning drive member drives the second matching sensor to extend into the battery shell to detect the position of the second tab, thereby realizing automated tab positioning, improving production efficiency and reducing labor costs. Secondly, the structural design realizes the positioning of the second tab after the tab assembly is inserted into the battery shell, solving the problem of low positioning accuracy caused by positioning the second tab before the tab assembly is inserted into the shell. Thirdly, when the second tab moves between the second transmitter and the second receiver, the second light beam emitted by the second transmitter is blocked by the second tab, so that the second receiver cannot receive the second light beam. Therefore, when the second receiver cannot receive the second light beam, the second tab is located between the second receiver and the second transmitter. The structural design greatly improves the accuracy of the second tab position detection, which is beneficial to improving the welding position accuracy of the second tab. Finally, the pole lug positioning device is provided with a first counter-radiation sensor for detecting the position of the first pole lug on the outside of the battery shell. Therefore, the positions of the first pole lug and the second pole lug can be detected by the pole lug positioning device, and the first pole lug and the second pole lug can be distinguished by the first counter-radiation sensor and the second counter-radiation sensor, thereby avoiding the problem of misdetecting the first pole lug as the second pole lug, thereby achieving the effect of further improving the detection accuracy of the second pole lug position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the tab positioning device provided by the present invention;

[0033] Figure 2 The structure of the battery shell, the first pole ear and the second pole ear provided by the present invention is shown in FIG. Figure 1 ;

[0034] Figure 3 It is a schematic diagram of the exploded structure of the frame provided by the present invention;

[0035] Figure 4 It is a partial enlarged structural schematic diagram of the first through-beam sensor, the second through-beam sensor, the battery shell, the first pole lug and the second pole lug provided by the present invention;

[0036] Figure 5 The structure of the battery shell, the first pole ear and the second pole ear provided by the present invention is shown in FIG. Figure 2 .

[0037] In the figure:

[0038] 10. battery case; 21. first pole ear; 22. second pole ear;

[0039] 100, frame; 110, first support portion; 120, second support portion; 121, first end; 122, second end; 130, connecting portion; 131, first side wall; 132, second side wall; 200, rotating assembly; 210, rotating drive member; 220, clamping structure; 230, first mounting seat; 300, positioning assembly; 310, first positioning drive member; 320, second positioning drive member; 330, first through-beam sensor; 331, first transmitter; 332, first receiver; 340, second through-beam sensor; 341, second transmitter; 342, second receiver; 351, second mounting seat; 352, third mounting seat; 353, fourth mounting seat; 400, blanking assembly; 410, blanking drive member; 420, fifth mounting seat;

[0040] D1, first direction; D2, second direction. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] This embodiment provides a tab positioning device, which can improve the efficiency and accuracy of detecting the position of the second tab.

[0046] Specifically, Figure 1 and Figure 2 As shown, the pole ear positioning device includes a frame 100, a rotating assembly 200 and a positioning assembly 300, wherein the rotating assembly 200 includes a rotating driving member 210, the rotating driving member 210 is arranged on the frame 100, the driving end of the rotating driving member 210 is used to drive and connect with the battery shell 10, a pole group is arranged in the battery shell 10, and a first pole ear 21 and a second pole ear 22 are arranged at one end of the pole group facing the opening of the battery shell 10, the first pole ear 21 extends out of the opening of the battery shell 10, and the second pole ear 22 is located in the battery shell 10, the positioning assembly 300 includes a first positioning driving member 310, a second positioning driving member 320, a first matching sensor 330 and a second matching sensor 340, the first positioning driving member 310 and the second positioning driving member 320 0 are all arranged on the frame 100, the driving end of the first positioning driving member 310 is drivingly connected to the first matching sensor 330 to drive the first matching sensor 330 to move to the outside of the battery shell 10 and close to the opening of the battery shell 10, the driving end of the second positioning driving member 320 is drivingly connected to the second matching sensor 340 to drive the second matching sensor 340 to move into the battery shell 10, and the rotating driving member 210 is used to drive the battery shell 10 to rotate with the axis of the battery shell 10 as the rotating axis, so that the first pole ear 21 can move between the first transmitter 331 and the first receiver 332 of the first matching sensor 330, and the second pole ear 22 can move between the second transmitter 341 and the second receiver 342 of the second matching sensor 340.

[0047] Based on the above design, the rotating drive member 210 drives the battery shell 10 to rotate, and the second positioning drive member 320 drives the second corresponding sensor 340 to extend into the battery shell 10 to detect the position of the second pole ear 22, thereby realizing automatic pole ear positioning, improving production efficiency and reducing labor costs.

[0048] Secondly, the structural design realizes the positioning of the second pole ear 22 after the pole assembly is inserted into the battery shell 10, thereby solving the problem of low positioning accuracy caused by positioning the second pole ear 22 before the pole assembly is inserted into the shell.

[0049] Again, when the second pole lug 22 moves between the second transmitter 341 and the second receiver 342, the second light beam emitted by the second transmitter 341 is blocked by the second pole lug 22, so that the second receiver 342 cannot receive the second light beam. Therefore, when the second receiver 342 cannot receive the second light beam, the second pole lug 22 is located between the second receiver 342 and the second transmitter 341. This structural design greatly improves the accuracy of position detection of the second pole lug 22, which is beneficial to improving the welding position accuracy of the second pole lug 22.

[0050] Finally, the pole lug positioning device is provided with a first pair of matching sensors 330 for detecting the position of the first pole lug 21 on the outside of the battery shell 10. Therefore, the positions of the first pole lug 21 and the second pole lug 22 can be detected by the pole lug positioning device, and the first pole lug 21 and the second pole lug 22 can be distinguished by the first pair of matching sensors 330 and 340, thereby avoiding the problem of misdetecting the first pole lug 21 as the second pole lug 22, thereby achieving the effect of further improving the detection accuracy of the position of the second pole lug 22.

[0051] In this embodiment, the first electrode tab 21 is a positive electrode tab, and the second electrode tab 22 is a negative electrode tab. Of course, in other embodiments, the first electrode tab 21 may be a negative electrode tab, and the second electrode tab 22 may be a positive electrode tab.

[0052] In this embodiment, the first positioning drive member 310 and the second positioning drive member 320 are both reciprocating cylinders. Of course, in other implementation schemes, the first positioning drive member 310 and the second positioning drive member 320 can also be drive components such as screw-actuated motors or manipulators, which are not listed one by one here.

[0053] Optionally, the rotating assembly 200 further includes a clamping structure 220 , which is connected to the driving end of the rotating driving member 210 , and the clamping structure 220 is configured to be detachably connected to the battery shell 10 to achieve a driving connection between the rotating driving member 210 and the battery shell 10 .

[0054] In this embodiment, the clamping structure 220 is a clamping claw, and the battery shell 10 is detachably clamped on the clamping claw. Of course, in other embodiments, the clamping structure 220 can also be a card plate and a card slot, the card slot is provided on the card plate, and the battery shell 10 is detachably inserted into the card slot.

[0055] Optionally, the tab positioning device further includes a material unloading component 400, which is used to remove the battery shell 10 from the clamping structure 220, so that the tab positioning device has an automatic unloading function, further reducing labor input.

[0056] Furthermore, the clamping structure 220 is provided with a first through hole (not shown in the figure), the rotating drive member 210 is a hollow shaft motor, the hollow shaft motor includes a shell and a hollow shaft rotatably connected to the shell, the clamping structure 220 is arranged on the hollow shaft, the shell is provided with a second through hole, the first through hole, the second through hole and the hollow shaft are coaxial and connected; the unloading assembly 400 includes a unloading drive member 410 and a pushing member (not shown in the figure), the unloading drive member 410 is arranged on the frame 100, and the driving end of the unloading drive member 410 is connected to the pushing member, the unloading drive member 410 can drive the pushing member from one end of the hollow shaft away from the clamping structure 220, pass through the second through hole, the hollow shaft and the first through hole, and push the battery shell 10 away from the clamping structure 220 to realize automatic unloading of the battery shell 10.

[0057] In other embodiments, the unloading component 400 may also be a robot, which directly clamps and removes the battery shell 10 on the clamping structure 220 to achieve automatic unloading of the battery shell 10.

[0058] It should be pointed out that the hollow shaft motor is a relatively common driving component in the field, and its specific structure and working principle will not be described in detail here.

[0059] In this embodiment, the material unloading driving component 410 is a reciprocating cylinder. Of course, in other implementation schemes, the material unloading driving component 410 can also be a driving component such as a screw motor or a manipulator, which will not be listed here one by one.

[0060] Optionally, the frame 100 includes a first support portion 110, a second support portion 120 and a connecting portion 130, the rotating drive member 210, the first positioning drive member 310, the second positioning drive member 320 and the unloading drive member 410 are all arranged on the first support portion 110, the second support portion 120 is used to be installed on an external device (such as a welding device or other device), and the first support portion 110 and the second support portion 120 are connected by the connecting portion 130.

[0061] Furthermore, the frame 100 also includes a locking structure (not shown in the figure), the first support part 110 is parallel to the horizontal plane, the second support part 120 includes a first end 121 and a second end 122 arranged opposite to each other, and the distance between the second support part 120 and the first support part 110 gradually increases along the direction from the first end 121 to the second end 122, the connecting part 130 is movably connected to the second support part 120 along a third direction, and the locking structure is used to lock the position of the connecting part 130 on the second support part 120, and the third direction is parallel to the direction from the first end 121 to the second end 122. Therefore, the height of the first support part 110 can be adjusted by adjusting the position of the connecting part 130 on the second support part 120, so that the rotating assembly 200, the positioning assembly 300 and the blanking assembly 400 installed on the first support part 110 can adapt to external equipment of different heights. After the height of the first support part 110 is adjusted to a suitable position, the connecting part 130 can be locked on the second support part 120 by the locking structure.

[0062] In this embodiment, the locking structure includes a first through hole, a first threaded hole and a first bolt, wherein the first through hole is opened on the second support portion 120, and the number of the first through holes is multiple, and the multiple first through holes are arranged at intervals along the third direction, the first threaded hole is opened on the side of the connecting portion 130 facing the second support portion 120, the number of the first threaded holes is multiple, and the multiple first threaded holes are arranged at intervals along the third direction, and the first bolt can pass through any first through hole and threadably cooperate with any first threaded hole.

[0063] In other embodiments, the locking structure includes a second through hole, a protrusion and a fixing pin, wherein the second through hole is opened on the second support portion 120, and the number of the second through holes is multiple, and the multiple second through holes are arranged at intervals along a third direction, the protrusion is protruded on the side wall of the connecting portion 130 close to the second support portion 120, the number of the protrusions is multiple, and the multiple protrusions are arranged at intervals along the third direction, and each protrusion is provided with a third through hole, and the fixing pin can be detachably inserted into any second through hole and any third through hole.

[0064] Alternatively, if Figure 3As shown, the connecting portion 130 includes a first side wall 131 and a second side wall 132, the first side wall 131 and the second side wall 132 are respectively located on opposite sides of the connecting portion 130 and are not parallel, the angle between the first side wall 131 and the second side wall 132 is d, the first side wall 131 is detachably connected to the first supporting portion 110, and the second side wall 132 is detachably connected to the second supporting portion 120, the number of connecting portions 130 is multiple, and the d of the multiple connecting portions 130 is not equal, for example, the d of the multiple connecting portions 130 is 30°, 45°, 60° or 75° respectively. °, etc., when the surfaces of different external devices connected to the second support part 120 (hereinafter referred to as the mounting surface) have different inclination angles relative to the horizontal plane, the angle between the first support part 110 and the second support part 120 can be adjusted by replacing different connecting parts 130, so that the second support part 120 can be connected to mounting surfaces of different inclinations while keeping the first support part 110 in a horizontal state, thereby allowing the rotating assembly 200, the positioning assembly 300 and the blanking assembly 400 installed on the first support part 110 to adapt to different mounting surfaces.

[0065] In this embodiment, the second bolt is passed through the first support portion 110 and threadedly engaged with the first side wall 131 to achieve a detachable connection between the first side wall 131 and the first support portion 110. In another embodiment, one of the first support portion 110 and the first side wall 131 is provided with a slide rail, and the other is provided with a slide groove, the slide rail and the slide groove are slidably engaged, and the slide groove is a through groove to achieve a detachable connection between the first side wall 131 and the first support portion 110.

[0066] It should be noted that the second support portion 120 may be fixedly connected to the mounting surface, or may be detachably connected to the mounting surface, depending on actual application requirements.

[0067] Alternatively, if Figure 1As shown, the rotating assembly 200 further includes a first mounting seat 230 , which is disposed on the first supporting portion 110 , and a fixed end of the rotating driving member 210 is mounted on the first mounting seat 230 . The positioning assembly 300 also includes a second mounting seat 351, a third mounting seat 352 and a fourth mounting seat 353. The second mounting seat 351 is arranged on the first support portion 110, and the second mounting seat 351 is arranged to face the opening of the battery shell 10. The fixed end of the first positioning drive member 310 and the fixed end of the second positioning drive member 320 are both mounted on the second mounting seat 351, and the first positioning drive member 310 is located above the second positioning drive member 320; the third mounting seat 352 is connected to the driving end of the first positioning drive member 310, the first matching sensor 330 is fixed on the third mounting seat 352, that is, the first transmitter 331 and the first receiver 332 are both fixed on the third mounting seat 352, the fourth mounting seat 353 is connected to the driving end of the second positioning drive member 320, and the second matching sensor 340 is fixed on the fourth mounting seat 353, that is, the second transmitter 341 and the second receiver 342 are both fixed on the fourth mounting seat 353. The blanking assembly 400 further includes a fifth mounting seat 420 , which is disposed on the first supporting portion 110 , and a fixed end of the blanking driving member 410 is mounted on the fifth mounting seat 420 .

[0068] This embodiment also provides a tab positioning method, which can improve the efficiency and accuracy of detecting the position of the second tab 22 .

[0069] Specifically, Figure 4 As shown, the tab positioning method, using the above-mentioned tab positioning device, includes the following steps:

[0070] S1, the battery case 10 is rotated in the first direction D1, and the first through-beam sensor 330 is moved to the first position, which is the outside of the battery case 10 and close to the opening of the battery case 10. When the first light beam emitted by the first transmitter 331 is blocked by the first pole ear 21 and cannot reach the first receiver 332, the battery case 10 stops rotating, and the first through-beam sensor 330 is reset;

[0071] S2, moving the second beam sensor 340 to a second position, the second position being inside the battery housing 10, and being upstream of the first position in the first direction D1;

[0072] S3. The battery case 10 is rotated again in the first direction D1. When the second light beam emitted by the second transmitter 341 is blocked by the second pole ear 22 and cannot reach the second receiver 342, the battery case 10 stops rotating.

[0073] The pole ear positioning method eliminates the need for manual positioning of the pole ear, reduces labor costs and improves detection efficiency. Secondly, the pole ear positioning method can detect the position of the second pole ear 22 after the pole assembly is inserted into the battery shell 10, avoiding the problem of low positioning accuracy caused by positioning the second pole ear 22 before the pole assembly is inserted into the shell. Again, in step S3, the second pole ear 22 rotates synchronously with the battery shell 10. When the second pole ear 22 rotates between the second transmitter 341 and the second receiver 342, the second light beam emitted by the second transmitter 341 is blocked by the second pole ear 22 and cannot reach the second receiver 342. That is to say, even if the second pole ear 22 is deformed, bent, and twisted, when the second receiver 342 cannot receive the second light beam, the second pole ear 22 is located between the second receiver 342 and the second transmitter 341 (that is, the second pole ear 22 is located at the second position at this time). It can be seen that the positioning method greatly improves the accuracy of the position detection of the second pole ear 22. Finally, in the pole lug positioning method, the first matching sensor 330 is first used to detect the position of the first pole lug 21 on the outside of the battery shell 10. After the position of the first pole lug 21 is detected, the second matching sensor 340 is extended into the battery shell 10 to detect the position of the second pole lug 22, thereby avoiding the problem of misdetecting the first pole lug 21 as the second pole lug 22, and having the effect of further improving the accuracy of detecting the position of the second pole lug 22.

[0074] Furthermore, step S3 also includes: after the battery shell 10 stops rotating, resetting the second polarity sensor 340 ; the tab positioning method also includes: S4, moving the welding head to the second position, welding the second tab 22 and the inner wall of the battery shell 10 .

[0075] Furthermore, the tab positioning method also includes: S5, the material unloading driving member 410 is started, so that the pushing member passes through the second through hole, the hollow shaft and the first through hole, and the battery shell 10 is pushed away from the clamping structure 220 to complete the unloading.

[0076] Alternatively, if Figure 4 and Figure 5As shown, the direction of the second pole lug 22 pointing to the first pole lug 21 along the circumference of the battery shell 10 includes a first direction D1 and a second direction D2, that is, the first direction D1 is opposite to the second direction D2, and along the first direction D1, the angle between the second pole lug 22 and the first pole lug 21 is a; between step S1 and step S2, it also includes: rotating the battery shell 10 along the second direction D2 by an angle b, and then stopping the rotation, b<a. When a is small, that is, the distance between the second pole lug 22 and the first pole lug 21 along the first direction D1 is small, there is a situation that when the first pole lug 21 reaches the first position, the second pole lug 22 has passed the second position. If this happens, the second matching sensor 340 in step S3 cannot detect the second pole lug 22 at the second position, and there will be a problem that the second matching sensor 340 collides with the first pole lug 21 that has rotated a circle at the second position. The pole lug positioning method provided in this embodiment, after the step S1 is completed, makes the battery shell 10 slightly rotate a certain angle, and then executes the step S2. This design can reduce the probability of the above-mentioned problem occurring, and improve the probability that the second pole lug 22 has not rotated to the second position when the second matching sensor 340 is located in the second position in step S2. Therefore, in step S3, the probability that the second matching sensor 340 detects the second pole lug 22 in the second position can be increased, and the probability that the second matching sensor 340 collides with the first pole lug 21 in the second position can be reduced. It can be seen that this method design improves the reliability of detecting the position of the second pole lug 22.

[0077] Further, step S3 also includes: if the battery shell 10 rotates by an angle c in step S3, and during this process, the second light beam emitted by the second transmitter 341 can always reach the second receiver 342, the battery shell 10 stops rotating, and the tab positioning device reports an error, c=a. If the second tab 22 is severely deformed, bent, or twisted, so that the second tab 22 that has reached the second position does not block the second light beam, the second light beam emitted by the second transmitter 341 can always be received by the second receiver 342. At this time, when executing step S3, there will be a problem that the first tab 21 that has rotated one circle along the first direction D1 collides with the second corresponding sensor 340 at the second position. In the tab positioning method provided in this embodiment, if the battery shell 10 rotates by an angle c in step S3, and during this process the second receiver 342 can always receive the second light beam emitted by the second transmitter 341, the battery shell 10 stops rotating. This design can reduce the probability of the first tab 21 rotating to the second position and colliding with the second corresponding sensor 340 in step S3, thereby protecting both the first tab 21 and the second corresponding sensor 340.

[0078] It should be noted that since the second pole tab 22 and the first pole tab 21 are both substantially sheet-shaped, and there is an angle (e.g., angle a) between the second pole tab 22 and the first pole tab 21 along the circumference of the battery shell 10, in order to enable the first pole tab 21 that reaches the first position to smoothly pass through the gap between the first transmitter 331 and the first receiver 332, and to enable the second pole tab 22 that reaches the second position to smoothly pass through the gap between the second transmitter 341 and the second receiver 342, therefore, Figure 4 As shown, in the first direction D1, the first beam sensor 330 and the second beam sensor 340 are arranged at an angle, and the size of the angle is equal to a, that is, in the first direction D1, the angle between the first transmitter 331 and the second transmitter 341 is a, and the angle between the first receiver 332 and the second receiver 342 is a.

[0079] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Tab positioning equipment, characterized in that: include: Rack(100); A rotating assembly (200), the rotating assembly (200) comprising a rotating drive member (210), the rotating drive member (210) being arranged on the frame (100), the driving end of the rotating drive member (210) being used for driving connection with a battery shell (10), a pole group being arranged in the battery shell (10), a first pole ear (21) and a second pole ear (22) being arranged at one end of the pole group facing the opening of the battery shell (10), the first pole ear (21) extending out of the opening of the battery shell (10), and the second pole ear (22) being located in the battery shell (10); A positioning assembly (300), the positioning assembly (300) comprising a first positioning drive member (310), a second positioning drive member (320), a first pairing sensor (330) and a second pairing sensor (340), the first positioning drive member (310) and the second positioning drive member (320) being both arranged on the frame (100), the driving end of the first positioning drive member (310) being drivingly connected to the first pairing sensor (330) so as to drive the first pairing sensor (330) to move to the outside of the battery shell (10) and close to the opening of the battery shell (10), and the driving end of the second positioning drive member (320) being drivingly connected to the second pairing sensor (340) so as to drive the second pairing sensor (340) to move into the battery shell (10); The rotating drive member (210) is used to drive the battery shell (10) to rotate with the axis of the battery shell (10) as the rotation axis, so that the first pole ear (21) can move between the first transmitter (331) and the first receiver (332) of the first matching sensor (330), and the second pole ear (22) can move between the second transmitter (341) and the second receiver (342) of the second matching sensor (340).

2. The tab positioning device according to claim 1, characterized in that: The rotating assembly (200) further comprises a clamping structure (220), wherein the clamping structure (220) is connected to the driving end of the rotating driving member (210), and the clamping structure (220) is configured to be detachably connected to the battery housing (10).

3. The terminal lug positioning device according to claim 2, characterized in that: The tab positioning device further comprises a material removal assembly (400), wherein the material removal assembly (400) is used to remove the battery shell (10) from the clamping structure (220).

4. The tab positioning device according to claim 3, characterized in that: The clamping structure (220) is provided with a first through hole, the rotating driving member (210) is a hollow shaft motor, the hollow shaft motor comprises a housing and a hollow shaft rotatably connected to the housing, the clamping structure (220) is arranged on the hollow shaft, the housing is provided with a second through hole, the first through hole, the second through hole and the hollow shaft are coaxial and connected; The material unloading assembly (400) includes a material unloading drive member (410) and a pushing member. The material unloading drive member (410) is arranged on the frame (100). The driving end of the material unloading drive member (410) is connected to the pushing member. The material unloading drive member (410) can drive the pushing member from one end of the hollow shaft away from the clamping structure (220), pass through the second through hole, the hollow shaft and the first through hole, and push the battery shell (10) away from the clamping structure (220).

5. The tab positioning device according to any one of claims 1 to 4, characterized in that: The frame (100) comprises a first supporting portion (110), a second supporting portion (120) and a connecting portion (130); the rotating driving member (210), the first positioning driving member (310) and the second positioning driving member (320) are all arranged on the first supporting portion (110); the second supporting portion (120) is used for being installed on an external device; the first supporting portion (110) and the second supporting portion (120) are connected via the connecting portion (130).

6. The tab positioning device according to claim 5, characterized in that: The frame (100) further comprises a locking structure, wherein the first supporting portion (110) is parallel to a horizontal plane, the second supporting portion (120) comprises a first end (121) and a second end (122) which are arranged opposite to each other, and the distance between the second supporting portion (120) and the first supporting portion (110) gradually increases in a direction from the first end (121) to the second end (122), the connecting portion (130) is movably connected to the second supporting portion (120) in a third direction, and the locking structure is used to lock the position of the connecting portion (130) on the second supporting portion (120), and the third direction is parallel to the direction from the first end (121) to the second end (122).

7. The tab positioning device according to claim 6, characterized in that: The connecting portion (130) comprises a first side wall (131) and a second side wall (132); the first side wall (131) and the second side wall (132) are respectively located on two opposite sides of the connecting portion (130) and are not parallel to each other; an angle d is included between the first side wall (131) and the second side wall (132); the first side wall (131) is detachably connected to the first supporting portion (110); the second side wall (132) is detachably connected to the second supporting portion (120); there are a plurality of connecting portions (130), and the d of the plurality of connecting portions (130) are not equal.

8. A method for locating a tab, using the tab locating device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, rotating the battery shell (10) along a first direction (D1), and moving the first beam sensor (330) to a first position, the first position being outside the battery shell (10) and close to an opening of the battery shell (10), and when a first light beam emitted by the first transmitter (331) is blocked by the first pole ear (21) and cannot reach the first receiver (332), the battery shell (10) stops rotating; S2, moving the second beam sensor (340) to a second position, wherein the second position is inside the battery housing (10), and in the first direction (D1), the second position is upstream of the first position; S3. The battery housing (10) is rotated again along the first direction (D1), and when the second light beam emitted by the second transmitter (341) is blocked by the second pole ear (22) and cannot reach the second receiver (342), the battery housing (10) stops rotating.

9. The tab positioning method according to claim 8, characterized in that: The direction in which the second pole lug (22) points toward the first pole lug (21) along the circumference of the battery shell (10) includes the first direction (D1) and the second direction (D2); along the first direction (D1), the angle between the second pole lug (22) and the first pole lug (21) is a; Also included between step S1 and step S2: The battery case (10) is rotated along the second direction (D2) by an angle b, and then the rotation is stopped, where b<a.

10. The tab positioning method according to claim 9, characterized in that: The step S3 further comprises: If the battery housing (10) rotates by an angle c in step S3, and during this process the second light beam emitted by the second transmitter (341) can always reach the second receiver (342), the battery housing (10) stops rotating, and c=a.

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