CN217903191U

CN217903191U - Battery tab correcting device

Info

Publication number: CN217903191U
Application number: CN202221495295.0U
Authority: CN
Inventors: 刘金石
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-25
Anticipated expiration: 2032-06-14

Abstract

The utility model provides a battery tab corrects device, a utmost point ear position for outwards stretching out by battery case is corrected, this battery tab corrects device includes rotary platform, and locate the upset on the rotary platform and correct the mechanism, wherein, rotary platform can be ordered about around self center pin rotation, the upset is corrected the mechanism and is had and accepts the driving force and can overturn predetermined angle's upset piece, upset piece has the load-bearing platform who is used for bearing battery case, be equipped with on the load-bearing platform and be used for constituting spacing portion to utmost point group, battery case is positioned on load-bearing platform, and can incline along with the upset of upset piece, the one end that the holding has utmost point ear because of battery case's slope orientation is removed in utmost point group in the battery case, and support and put in spacing portion. The utility model discloses a battery tab corrects device does benefit to the uniformity that guarantees utmost point ear and stretch out battery housing position, and then can improve follow-up top cap welded welding quality, improves the yields.

Description

Battery tab correcting device

Technical Field

The utility model relates to a lithium battery manufacturing technical field, in particular to battery tab corrects device.

Background

With the wide application of power lithium batteries in the field of new energy automobiles, the technology of lithium batteries is more and more mature, and meanwhile, the competition is more and more intense. Each battery supplier is also striving for new products in the direction of high energy. Blade batteries are the mainstream products due to their high energy. The pole lugs are arranged on the two sides of the blade battery, and the position of the pole lugs in the aluminum shell is uncontrolled after the blade battery enters the shell, so that the relative positions of the positive pole lugs and the positive pole cover plate are different, and the welding quality of the follow-up cover plate and the aluminum shell is influenced.

At present, the control of the position of the lug of the positive electrode extending out of the aluminum shell is still at the position of entering the shell, the pressure and the distance of entering the shell are monitored, and the consistency of the position of the lug extending out of the aluminum shell cannot be ensured by the mode. In addition, the mode of directly clamping and pulling the tab to correct the deviation is adopted, so that the tab is easily damaged, and the product quality is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a device is corrected to battery utmost point ear to can improve the consistency that utmost point ear stretches out battery case position.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery tab correcting device is used for correcting the tab position extending outwards from the inside of a battery shell and comprises a rotary platform and an overturning correcting mechanism arranged on the rotary platform, wherein,

the rotary platform can be driven to rotate around a central shaft of the rotary platform, the overturning correction mechanism is provided with an overturning part which bears the driving force and can overturn for a preset angle, the overturning part is provided with a bearing platform used for bearing the battery shell, the bearing platform is provided with a limiting part used for limiting the end part of a pole group with a pole lug, the battery shell is positioned on the bearing platform and can incline along with the overturning of the overturning part, the pole group accommodated in the battery shell moves towards one end with the pole lug due to the inclination of the battery shell, and the end part of the pole group is abutted to the limiting part.

Furthermore, a positioning and clamping assembly for positioning the battery shell is arranged on the bearing platform.

Further, the positioning and clamping assembly comprises at least one pair of first clamping blocks which can approach or separate from each other, and the two first clamping blocks are used for clamping the side end face of the battery shell where the long side is located.

Furthermore, at least one of the first clamping blocks in the pair of first clamping blocks is provided with a tightly-abutting end and a limiting end, the tightly-abutting end is used for abutting against the side end face of the battery shell, and the limiting end is connected with the tightly-abutting end and used for limiting the upper end face of the battery shell.

Furthermore, the positioning and clamping assembly further comprises at least one pair of second clamping blocks which can be close to or far away from each other, the two second clamping blocks are used for clamping the side end face where the short side of the battery shell is located, and in the pair of second clamping blocks, at least one of the second clamping blocks is provided with a limiting protrusion for limiting the side end face of the pole group, and the limiting protrusion forms the limiting part.

Furthermore, the bearing platform is provided with a supporting block for supporting the bottom of the battery shell.

Further, the supporting blocks are arranged at intervals along the length direction of the battery shell.

Further, the bearing platform is a plurality of bearing platforms which are arranged at intervals.

Furthermore, the overturning correction mechanism comprises a driving piece arranged on the rotating platform and a rotating shaft connected to the power output end of the driving piece, and the overturning piece is arranged on the rotating shaft and overturns along with the rotation of the rotating shaft.

Furthermore, a position sensor for detecting the turning angle of the turning piece is arranged on the rotating shaft.

Compared with the prior art, the utility model discloses following advantage has:

battery utmost point ear correct device, through the rotary platform who sets up, can adjust the position orientation of upset piece, and do benefit to and place the battery case who has held utmost point group on load-bearing platform. Through the upset correction mechanism that sets up, can be so that be located the battery case on load-bearing platform, turn over along with the upset of upset and be the slope form setting to do benefit to utmost point group in the battery case and remove towards the one end that has utmost point ear under self action of gravity, the spacing portion that sets up simultaneously can carry on spacingly to the utmost point end of group who removes, thereby does benefit to the uniformity that guarantees utmost point ear and stretch out the battery case position, and then can improve follow-up top cap welded welding quality, improves the yields.

In addition, the location centre gripping subassembly that sets up is favorable to guaranteeing the location effect of battery shell on load-bearing platform to when battery shell is in the tilt state, do benefit to the relative movement of utmost point group in the battery shell. Set up a plurality of supporting shoes on load-bearing platform, be favorable to improving the support stability to battery case, and also be favorable to battery case to place on load-bearing platform.

In addition, the overturning correction mechanism comprises a driving piece arranged on the rotating platform and a rotating shaft for receiving the driving piece and driving the rotating shaft, the overturning piece is arranged on the rotating shaft, and therefore the overturning piece can be driven to overturn to an inclined state under the rotation of the rotating shaft, and the lug position correction is facilitated.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a battery tab correction device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another view angle of the battery tab correction device according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first clamping block and a second clamping block according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a battery case equipped with a pole group according to an embodiment of the present invention;

description of reference numerals:

1. rotating the platform; 101. a first motor; 102. a hollow turntable; 103. mounting a bracket;

2. a connecting plate;

3. a load-bearing platform; 301. a first clamping block; 3011. a limiting end; 3012. abutting the end; 302. a second clamping block; 3021. a limiting bulge; 303. a support block;

5. a battery case; 501. a tab; 502. a pole group end plate;

10. a position sensor; 20. a drive member; 201 a rotating shaft; 30. a first linear driving device; 40. a second linear drive.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same order, but are to be construed as referring to the same order.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a battery tab correcting device, which is used for correcting the position of a tab 501 extending outwards from the inside of a battery shell 5, so that the consistency of the position of the tab 501 extending out of the battery shell 5 can be improved.

In terms of overall structure, the battery tab correcting device of the present embodiment is taken as an exemplary structure, and as shown in fig. 1 and fig. 2, the battery tab correcting device includes a rotating platform 1, and an overturning correcting mechanism provided on the rotating platform 1.

Wherein, the rotary platform 1 can be driven to rotate around the central shaft thereof. The overturning correction mechanism is provided with an overturning part which bears the driving force and can overturn at a preset angle, the overturning part is provided with a bearing platform 3 for bearing a battery shell 5, the bearing platform 3 is provided with a limiting part for limiting the end part of the electrode group, the battery shell 5 is positioned on the bearing platform 3 and can incline along with the overturning part, the electrode group accommodated in the battery shell 5 moves towards one end with a lug 501 due to the inclination of the battery shell 5, and the end part of the electrode group is abutted to the limiting part.

In the structure, the position and the orientation of the turnover correcting mechanism can be adjusted through the rotation of the rotating platform 1, so that the battery shell 5 accommodating the pole group is favorably placed on the bearing platform 3. The battery shell 5 is positioned on the bearing platform 3 and can be obliquely arranged along with the overturning of the overturning piece, so that the pole group in the battery shell 5 can move towards one end with the pole lug 501 under the action of the self gravity.

Meanwhile, the limiting part can limit the end part of the movable pole group, so that the position of the pole lug 501 extending out of the battery shell 5 can keep better consistency, the welding quality of subsequent top cover welding is improved, and the yield is improved.

It should be noted that the battery tab correcting device of the present embodiment is applied to a process before the tab 501 is welded to the cover plate, in which a pole group is assembled in the battery case 5, and a pole group end plate 502 is provided at an end of the pole group having the tab 501, and the structure thereof is as shown in fig. 4. The limiting part is specifically used for limiting the pole group end plate 502, so that when the battery shell 5 inclines, the pole group in the battery shell 5 moves, the pole lug 501 extends outwards, and the position of the pole lug 501 extending out of the battery shell 5 is consistent under the limiting effect of the limiting part on the pole group end plate 502.

In detail, to facilitate the rotation of the rotary platform 1, in the present embodiment, as shown in fig. 1 and 2, a hollow turntable 102 and a first motor 101 for driving the hollow turntable 102 to rotate are provided at the bottom of the rotary platform 1. Wherein, rotary platform 1 is fixed on hollow revolving stage 102, and hollow revolving stage 102 can adopt the mature structure among the prior art, and first motor 101 is preferred servo motor to do benefit to and improve hollow revolving stage 102 pivoted precision.

In specific implementation, the rotating platform 1 can be driven by the first motor 101 to rotate 90 °, so that the battery housing 5 on the carrying platform 3 can also rotate 90 ° to adjust the length direction of the battery, thereby facilitating the placement of the battery housing 5 with the pole group on the carrying platform 3.

With continued reference to fig. 1 and 2, the turnover correcting mechanism of the present embodiment includes a driving member 20 disposed on the rotating platform 1, and a rotating shaft connected to a power output end of the driving member 20, wherein the turnover member is disposed on the rotating shaft and turns over along with the rotation of the rotating shaft. In a specific structure, the rotating platform 1 is provided with a plurality of mounting brackets 103 arranged at intervals, the driving member 20 is fixed on the mounting bracket 103 at the end, and the rotating shaft is rotatably arranged on other mounting brackets 103. Wherein the driving member 20 is preferably a servo motor, which facilitates the angle control of the rotation of the rotating shaft to adjust the tilting angle of the tilting member.

In this embodiment, upset piece includes the connecting plate 2 with pivot fixed connection to and link firmly the load-bearing platform 3 on connecting plate 2, rotate to predetermined angle through driving piece 20 drive pivot, and drive the upset of connecting plate 2 and be the slope form, thereby make load-bearing platform 3 be the slope form, and then do benefit to the utmost point group in the battery case 5 and remove towards the one end that has utmost point ear 501 under self action of gravity.

In order to improve the production efficiency, in this embodiment, the carrying platform 3 is a plurality of platforms arranged on the connecting plate 2 at intervals. In addition, in order to facilitate the detection of the turning angle of the turning member, that is, the position of the rotation of the rotating shaft, in this embodiment, a position sensor 10 for detecting the rotation position of the rotating shaft is provided on the rotating shaft, and the position sensor 10 may be a mature product in the prior art.

In addition, as a preferred embodiment of the present embodiment, in order to facilitate loading and unloading of the battery housing 5, in the present embodiment, a plurality of supporting blocks 303 for supporting the bottom of the battery housing 5 are provided on the carrying platform 3, and the plurality of supporting blocks 303 are arranged at intervals along the length direction of the battery housing 5.

In this embodiment, as a preferred embodiment, as shown in fig. 1 to 3, a positioning and clamping assembly for positioning the battery case 5 is provided on the carrying platform 3. The positioning and clamping assembly specifically comprises at least one pair of first clamping blocks 301 which can approach or depart from each other, and the two first clamping blocks 301 are used for clamping the side end faces corresponding to the long sides of the battery shell 5. And at least one pair of second clamping blocks 302 capable of approaching or departing from each other, the second clamping blocks 302 being used for clamping the side end faces corresponding to the short sides of the battery case 5,

preferably, at least one of the first clamping blocks 301 in the pair of first clamping blocks 301 has a pressing end 3012 and a limiting end 3011, the first clamping block 301 is in an inverted L shape as a whole, the pressing end 3012 is used for pressing against a side end face of the battery case 5, and the limiting end 3011 is connected with the pressing end 3012 and is used for limiting the upper end face of the battery case. In addition, at least one of the pair of second clamp blocks 302 has a stopper projection 3021 for restricting the end surface on the electrode group side, and the stopper projection 3021 constitutes the above-described stopper portion.

As one preferred embodiment, as shown in fig. 1 to 3, a pair of first clamping blocks 301 and a pair of second clamping blocks 302 are respectively disposed on the carrying platform 3 at positions corresponding to the circumferential direction of the battery housing 5, that is, at opposite end surfaces of the battery housing 5. One of the first clamping blocks 301 is fixed on the bearing platform 3, and the other first clamping block 301 rotates through the first linear driving device 201; 30 can be driven to move toward or away from the first holding block 301 in the fixed state.

In addition, the two opposite first clamping blocks 301 are facilitated to approach or separate, and a rotating shaft of the first linear driving device 201 is arranged on the bearing platform 3; 30, the first linear driving device 201 rotates the shaft; 30, an air cylinder, an electric cylinder and the like can be adopted, and the first linear driving device 201 rotates the shaft; the power output end of the power output shaft 30 is connected with one of the first clamping blocks 301, so that the shaft rotates in the first linear driving device 201; 30, rotating with the first linear driving device 201; the first holding block 301 to which 30 are connected can be close to or distant from the other first holding block 301.

In order to prevent the battery housing 5 from being separated from the carrying platform 3 in the inclined state, as shown in fig. 3, the shaft is rotated with the first linear driving device 201 in the present embodiment; the first clamping block 301 connected with the battery case 5 is provided with a limiting end 3011, the limiting end 3011 and the abutting end 3012 abutting against the end face of the battery case 5 are in a bent L shape, and the structure is simple and can fix the battery case 5 well.

In addition, one of the second clamping blocks 302 of the pair of second clamping blocks 302 is fixed to the loading platform 3, and the other second clamping block 302 is connected to the second linear driving device 40, so that the second clamping block 302 connected to the second linear driving device 40 can be close to or far from the other second clamping block 302. At the same time, a stop lug 3021, which extends in the direction of the pole group end plate 502, is formed on the second clamping piece 302 connected to the second linear drive 40, that is to say as shown in fig. 3.

In this embodiment, the second clamping block 302 having the limiting protrusion 3021 can abut against the battery case 5 to position the battery case 5, and can block and limit the pole group end plate 502 in the battery case 5.

It is understood that, in addition to the above-mentioned driving manner in which one of the first clamping blocks 301 and the second clamping block 302 moves closer to or away from the other, the pair of first clamping blocks 301 and the second clamping block 302 may also move in opposite directions in synchronization with the two first clamping blocks 301 and the two second clamping blocks 302, and this is also possible.

In order to improve the positioning effect on the battery case 5, in the present embodiment, each of the first clamping blocks 301 and the second clamping blocks 302 is provided in multiple pairs.

The device is corrected to battery tab of this embodiment, when specifically using, at first, rotates through first motor 101 drive rotary platform 1, adjusts load-bearing platform 3's orientation for load-bearing platform 3 is in the position that does benefit to battery case 5 material loading. Next, the battery case 5 with the electrode group is put on the loading platform 3 by an external device such as a robot, etc., and then rotated by the first linear driving device 201; 30 drive the first holding block 301 connected thereto to move closer to the other first holding block 301 opposite thereto to clamp the end face of the battery case 5 where the long side is located. One of the second clamping blocks 302 connected to the second clamping block is driven by a second driving device to approach the other second clamping block 302 opposite to the first clamping block, so as to clamp and fix the end face of the battery shell 5 where the short side is located and the end of the pole group.

Then, the driving member 20 drives the rotating shaft to rotate a certain angle, so that the bearing platform 3 is inclined, that is, the battery housing 5 on the bearing platform 3 is in an inclined state, at this time, in the process of inclining the battery housing 5, the pole group in the battery housing 5 moves towards the end with the pole lug 501 under the action of self gravity, and simultaneously, under the action of the limiting protrusion 3021, the position of the pole lug 501 extending out of the battery housing 5 can be kept consistent.

The battery tab correcting device of the embodiment can enable the electrode group in the battery shell 5 to move towards one end with the electrode tab 501 under the action of self gravity, so that the position of the electrode tab 501 extending out of the battery shell 5 can be adjusted favorably, the position of the electrode tab 501 extending out of the battery shell 5 has better consistency, the welding quality of subsequent top cover welding can be improved favorably, and the yield can be improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery tab corrects device for to correcting by the inside utmost point ear (501) position of outwards stretching out of battery case (5), its characterized in that: the battery tab correcting device comprises a rotating platform (1) and an overturning correcting mechanism arranged on the rotating platform (1), wherein,

the rotary platform (1) can be driven to rotate around a central shaft of the rotary platform, the overturning correction mechanism is provided with an overturning part which bears driving force and can overturn a preset angle, the overturning part is provided with a bearing platform (3) for bearing the battery shell (5), a limiting part for limiting the end part of a pole group with a pole lug (501) is arranged on the bearing platform (3), the battery shell (5) is positioned on the bearing platform (3) and can incline along with the overturning of the overturning part, the pole group accommodated in the battery shell (5) moves towards one end with the pole lug (501) due to the inclination of the battery shell (5), and the end part of the pole group abuts against the limiting part.

2. The battery tab correction device as claimed in claim 1, wherein:

and the bearing platform (3) is provided with a positioning and clamping assembly for positioning the battery shell (5).

3. The battery tab correction device as set forth in claim 2, wherein:

the positioning clamping assembly comprises at least one pair of first clamping blocks (301) which can approach or depart from each other, and the first clamping blocks (301) are used for clamping the side end face of the long side of the battery shell (5).

4. The battery tab correction device as set forth in claim 3, wherein:

in the pair of first clamping blocks (301), at least one of the first clamping blocks (301) is provided with a tightly-abutting end (3012) and a limiting end (3011), the tightly-abutting end (3012) is used for abutting against the side end face of the battery shell (5), and the limiting end (3011) is connected with the tightly-abutting end (3012) and used for limiting the upper end face of the battery shell (5).

5. The battery tab correction device as set forth in claim 3, wherein:

the positioning clamping assembly further comprises at least one pair of second clamping blocks (302) which can approach or depart from each other, the two second clamping blocks (302) are used for clamping the side end face where the short side of the battery shell (5) is located, and in the pair of second clamping blocks (302), at least one second clamping block (302) is provided with a limiting protrusion (3021) used for limiting the side end face of the pole group, and the limiting protrusion (3021) forms the limiting part.

6. The battery tab correction device as set forth in claim 5, wherein:

and the bearing platform (3) is provided with a supporting block (303) for supporting the bottom of the battery shell (5).

7. The battery tab correction device as set forth in claim 6, wherein:

the supporting blocks (303) are arranged at intervals along the length direction of the battery shell (5).

8. The battery tab correction device as claimed in claim 1, wherein:

the bearing platforms (3) are arranged in a plurality at intervals.

9. The battery tab correction device according to any one of claims 1 to 8, wherein:

the overturning correction mechanism comprises a driving piece (20) arranged on the rotating platform (1) and a rotating shaft connected to the power output end of the driving piece (20), wherein the overturning piece is arranged on the rotating shaft and overturns along with the rotation of the rotating shaft.

10. The battery tab correction device as set forth in claim 9, wherein:

and a position sensor (10) for detecting the turning angle of the turning piece is arranged on the rotating shaft.