CN217142769U

CN217142769U - Automatic welding device for lithium battery

Info

Publication number: CN217142769U
Application number: CN202220318688.8U
Authority: CN
Inventors: 张小明; 李海军; 徐德雷
Original assignee: Gree Altairnano New Energy Inc
Current assignee: Gree Altairnano New Energy Inc
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-08-09
Anticipated expiration: 2032-02-16

Abstract

The utility model provides a lithium cell automatic welder, include: a supporting seat; the rotating mechanism comprises a first driving assembly and a clamping part, the first driving assembly is connected with the supporting seat, the clamping part is provided with a first clamping position and a second clamping position for bearing the battery to be welded, and the first driving assembly is used for driving the clamping part to be located at the first clamping position and the second clamping position; the pressing mechanism comprises a second driving assembly and a pressing portion, the second driving assembly is connected with the supporting seat, the second driving assembly is arranged opposite to the first driving assembly, the pressing portion is provided with a pressing position and a releasing position, the second driving assembly is used for driving the pressing portion to be located at the pressing position and the releasing position, and when the pressing portion is located at the pressing position, the pressing portion is abutted to a battery cover plate of a battery placed on the clamping portion. By adopting the technical scheme, the problem of low welding efficiency of the lithium battery in the prior art is effectively solved.

Description

Automatic welding device for lithium battery

Technical Field

The utility model relates to a lithium cell welding equipment technical field particularly, relates to a lithium cell automatic welder.

Background

The existing lithium battery welding process comprises the following steps: after the assembly line battery is conveyed in place → manually taking the battery cell to an assembly workbench → manually aligning and installing the battery cell and a cover plate → manually locking a clamp with the battery mounted, moving the clamp with the battery mounted to a welding workbench → manually aligning and installing the clamp → manually identifying the position of the clamp, manually positioning by using arterial impact → laser welding machine automatically welding according to a programmed program → manually moving the battery and the clamp with one welded surface to the assembly workbench → manually disassembling the clamp → manually replacing the surface of the battery, aligning → manually locking the clamp → manually moving the clamp with the battery mounted to the welding workbench → manually aligning and installing the clamp → manually identifying the position of the clamp, and manually positioning by using arterial impact → laser welding machine automatically welding according to the programmed program → manually moving the welded battery and the clamp to the assembly workbench → manually disassembling the clamp → taking out the battery and putting the battery in the assembly line. And repeating the above processes to realize the welding of the lithium battery. However, this solution has several problems: firstly, the labor intensity is high, and manual alignment, clamping, carrying (together with a clamp), alignment and face changing welding are needed. Second, welding inefficiency, it is extravagant to have counterpoint time, needs artifical aluminium connecting strip and apron counterpoint, anchor clamps and welded platform counterpoint, the artifical pulse of laser counterpoint, need take out the battery when trading the face welding simultaneously and counterpoint the installation once more to and there is the time waste of turnover in-process, the turnover process includes: assembly line → assembly workbench → welding workbench → assembly line. Thirdly, the potential safety hazard coefficient is high, the battery needs to be disassembled for many times, transposed welding and the calibration position needs to be knocked and reshaped manually by a hammer, the internal structure of the battery is easily damaged, the battery and the clamp are carried together in a reciprocating mode and are overweight, and the danger of smashing and clamping personnel exists.

Aiming at the problem of low welding efficiency of the lithium battery in the prior art, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a lithium cell automatic welder to solve the lithium cell among the prior art and weld the inefficiency problem.

In order to achieve the above object, according to the utility model discloses an aspect provides a lithium cell automatic welder, includes: a supporting seat; the rotating mechanism comprises a first driving assembly and a clamping part, the first driving assembly is connected with the supporting seat, the clamping part is provided with a first clamping position and a second clamping position for bearing the battery to be welded, and the first driving assembly is used for driving the clamping part to be located at the first clamping position and the second clamping position; the pressing mechanism comprises a second driving assembly and a pressing portion, the second driving assembly is connected with the supporting seat, the second driving assembly is arranged opposite to the first driving assembly, the pressing portion is provided with a pressing position and a releasing position, the second driving assembly is used for driving the pressing portion to be located at the pressing position and the releasing position, and when the pressing portion is located at the pressing position, the pressing portion is abutted to a battery cover plate of a battery placed on the clamping portion.

Further, the first drive assembly includes: the transmission side plate is connected with the supporting seat; the rotary driving motor is connected with the transmission side plate; the driving wheel is connected with the side plate of the driving side, the driving wheel is connected with the output end of the rotary driving motor, the clamping part is connected with the rotary driving motor through the driving wheel, the rotary driving motor can drive the clamping part to rotate to a first clamping position and a second clamping position along the rotation axis, and the rotation axis extends in the horizontal direction.

Further, the clamping portion includes: the U-shaped transposition shaft is provided with a connecting shaft section, the connecting shaft section is rotatably arranged on the side plate at the transmission side through a bearing, the connecting shaft section is connected with a rotary driving motor through a transmission wheel, and the rotary driving motor can drive the U-shaped transposition shaft to drive the battery to be located at a first clamping position and a second clamping position.

Further, lithium cell automatic welder still includes positioning mechanism, and positioning mechanism includes: the positioning cylinder is connected with the transmission side plate, a positioning pin is arranged at the output end of the positioning cylinder, a positioning hole matched with the positioning pin is formed in the U-shaped transposition shaft, and when the U-shaped transposition shaft is located at the first clamping position and the second clamping position, the positioning cylinder can drive the positioning pin to extend into the positioning hole so as to position the U-shaped transposition shaft.

Furthermore, the end part of the side plate at the opening end of the U-shaped transposition shaft is provided with a first clamping groove.

Further, the pressing portion includes a pressing plate, and the second driving assembly includes: the pressing side plate is connected with the supporting seat and is arranged opposite to the transmission side plate; the pressing cylinder is connected with the pressing side plate; the pressing plate is connected with the output end of the pressing cylinder, and the pressing cylinder can drive the pressing plate to move to a pressing position and a releasing position between the pressing side plate and the transmission side plate.

Further, the second drive assembly further comprises: the guide rail is connected with at least one of the supporting seat and the pressing side plate, and the pressing plate is movably connected with the guide rail.

Further, lithium cell automatic welder still includes buffer gear, and buffer gear is connected with the clamp plate, and when the clamp plate was located the position that compresses tightly, buffer gear and battery apron butt.

Further, the buffer mechanism includes: the cover plate positioning seat is connected with the pressing plate and is provided with at least one equal-height limiting part; the battery cover plate comprises a cover plate positioning plate, wherein the cover plate positioning plate is connected with the cover plate positioning seat through equal-height limiting parts, at least one elastic part is arranged between the cover plate positioning seat and the cover plate positioning plate, and a first limiting hole for placing a battery cover plate is formed in one side, facing the rotating mechanism, of the cover plate positioning plate.

Furthermore, a second limiting hole is formed in the groove wall of the first limiting hole, a limiting part is arranged in the second limiting hole, the limiting part is provided with a locking position protruding out of the groove wall of the first limiting hole to lock the battery cover plate in the first limiting hole, and the limiting part is provided with an avoiding position located in the second limiting hole to release the battery cover plate.

Furthermore, the automatic welding device for the lithium battery further comprises a jacking mechanism, the jacking mechanism comprises a third driving assembly and a bearing part, the third driving assembly is connected with the supporting seat, the bearing part is used for bearing the battery, and the third driving assembly drives the bearing part along the vertical direction to drive the battery to move to the first clamping position and the second clamping position.

Further, the third drive assembly includes the lift cylinder, and the lift cylinder is connected with the supporting seat, and the supporting part includes the layer board, and the layer board is connected with the output of lift cylinder, and the tip towards hold-down mechanism one side of layer board is provided with spacing piece, and spacing piece is two, and two spacing pieces set up relatively in order to form the spacing space that is used for holding the battery, and the second draw-in groove has been seted up to the tip of at least one spacing piece.

Further, the third drive assembly further comprises: one or more guide rods, wherein the first ends of the guide rods are connected with the supporting plate, and the second ends of the guide rods are movably connected with the supporting seat.

Use the technical scheme of the utility model, lithium cell automatic welder includes supporting seat, rotary mechanism, hold-down mechanism, through rotary mechanism centre gripping battery and make the battery rotatory to different positions to and compress tightly the battery apron through hold-down mechanism, artifical transport battery, anchor clamps location and tear open when having left out among the prior art welding lithium cell press from both sides processes such as face welding that trade, reduce personnel's operation intensity of labour, realize the technological effect of automatic welding lithium cell. By adopting the technical scheme, the problem of low welding efficiency of the lithium battery in the prior art is effectively solved.

Drawings

The accompanying drawings, which form a part of the present application, 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 and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a first embodiment of an automatic welding device for lithium batteries according to the present invention;

fig. 2 shows a schematic structural diagram of an embodiment of a lithium battery of the automatic welding device for lithium batteries according to the present invention;

fig. 3 is a schematic structural diagram of an embodiment of a rotating mechanism of an automatic welding device for lithium batteries according to the present invention;

fig. 4 shows a schematic structural diagram of an embodiment of a jacking mechanism of an automatic welding device for lithium batteries according to the present invention;

fig. 5 shows a schematic structural diagram of a second embodiment of an automatic welding device for lithium batteries according to the present invention;

fig. 6 is a schematic structural diagram of an embodiment of a pressing mechanism of an automatic welding device for lithium batteries according to the present invention;

fig. 7 is a schematic structural diagram of an embodiment of a buffer mechanism of an automatic welding device for lithium batteries according to the present invention;

fig. 8 is a schematic structural diagram of an embodiment of a battery cover plate of the automatic welding device for lithium batteries according to the present invention;

fig. 9 shows a schematic structural diagram of an embodiment of a base of an automatic welding device for lithium batteries according to the present invention.

Wherein the figures include the following reference numerals:

10. a supporting seat;

20. a rotation mechanism; 21. a first drive assembly; 211. a transmission-side plate; 212. a rotary drive motor; 22. a clamping portion; 221. a U-shaped transposition shaft; 222. connecting the shaft sections; 223. positioning holes; 224. a first card slot;

30. a hold-down mechanism; 31. a second drive assembly; 311. compressing the side plates; 312. a pressing cylinder; 313. pressing a plate; 314. a guide rail; 32. a pressing part;

40. a positioning mechanism; 41. positioning the air cylinder; 42. positioning pins;

50. a buffer mechanism; 51. a cover plate positioning seat; 52. a limit piece of equal height; 53. a cover plate positioning plate; 531. a second limiting hole; 54. an elastic member;

60. a jacking mechanism; 61. a third drive assembly; 611. a lifting cylinder; 612. a guide bar; 62. a bearing part; 621. a support plate; 622. a limiting sheet; 623. a second card slot;

70. a laser welding head; 71. a lithium battery;

201. an aluminum connecting block; 202. the aluminum connecting block is guided to the bevel edge; 203. a lithium battery cell;

303. a first further drive wheel; 304. a step belt; 305. a second step of driving wheels; 306. locking the nut; 307. a first bearing; 308. a double bearing sleeve; 309. a second bearing;

401. jacking cylinder mounting plates; 404. a guide shaft sleeve; 405. jacking a limiting block;

503. a battery cover plate; 5014. a linear slider; 5015. a third bearing; 5017. a bearing housing; 5018. locking the nut; 5019. rotating the flange;

5024. a cover plate positioning groove; 5025. steel balls; 5026. a compression spring; 5027. tightening the screw;

5031. a battery positive post; 5032. a battery negative pole; 5033. an aluminum connecting sheet notch; 5034. the aluminum connecting strip is guided to the bevel edge;

601. and connecting the holes.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 9, according to an embodiment of the present application, an automatic welding device for a lithium battery is provided.

Lithium cell automatic welder includes: support seat 10, rotary mechanism 20, hold-down mechanism 30. The rotating mechanism 20 comprises a first driving assembly 21 and a clamping portion 22, the first driving assembly 21 is connected with the supporting base 10, the clamping portion 22 has a first clamping position and a second clamping position for bearing the battery to be welded, and the first driving assembly 21 is used for driving the clamping portion 22 to be located at the first clamping position and the second clamping position. The pressing mechanism 30 includes a second driving assembly 31 and a pressing portion 32, the second driving assembly 31 is connected to the support base 10, the second driving assembly 31 is disposed opposite to the first driving assembly 21, the pressing portion 32 has a pressing position and a releasing position, the second driving assembly 31 is configured to drive the pressing portion 32 to be located at the pressing position and the releasing position, wherein when the pressing portion 32 is located at the pressing position, the pressing portion 32 abuts against a battery cover of a battery placed on the clamping portion 22.

Use the technical scheme of this embodiment, lithium cell automatic welder includes supporting seat 10, rotary mechanism 20, hold-down mechanism 30, through the 20 centre gripping batteries of rotary mechanism and make the battery rotate to different positions to and compress tightly the battery apron through hold-down mechanism 30, the manual work when having left out among the prior art welding lithium cell carries the battery, anchor clamps location and tear open to press from both sides and trade processes such as face welding, reduction personnel operation intensity of labour realizes the technological effect of automatic welding lithium cell. By adopting the technical scheme, the problem of low welding efficiency of the lithium battery in the prior art is effectively solved. By adopting the technical scheme of the embodiment, a plurality of processes such as manual battery turnover, fixture, manual fixture positioning, manual pulse positioning, clamp disassembly and face replacement welding and the like in the prior art are avoided.

The rotating mechanism 20 is used for rear end positioning of the battery and battery transposition rotation. The jacking mechanism 60 is used for lifting the battery and positioning aluminum connecting blocks on two sides of the battery. The hold-down mechanism 30 is used for fixing the battery cover plate and assembling the battery cover plate with the aluminum connecting block.

Further, the first driving assembly 21 includes a driving side plate 211, a rotation driving motor 212, and a driving wheel. The driving side plate 211 is connected to the support base 10. The rotation driving motor 212 is connected to the transmission-side plate 211. The transmission wheel is connected with the transmission side plate 211, the transmission wheel is connected with the output end of the rotary driving motor 212, the clamping part 22 is connected with the rotary driving motor 212 through the transmission wheel, and the rotary driving motor 212 can drive the clamping part 22 to rotate to a first clamping position and a second clamping position along the rotation axis, wherein the rotation axis extends along the horizontal direction.

Optionally, as shown in fig. 2, the lithium battery 71 includes an aluminum connection block 201, an aluminum connection block bevel guide edge 202, and a lithium battery cell 203. The aluminum connecting block guiding bevel edge 202 is connected with the cover plate slot, and the aluminum connecting block guiding bevel edge is convenient to insert into the cover plate slot quickly and aligned.

As shown in fig. 3, the transmission wheel includes: a first step driving wheel 303, a step belt 304 and a second step driving wheel 305. The rotary mechanism 20 further includes a lock nut 306, a first bearing 307, a dual bearing sleeve 308, and a second bearing 309.

The clamping portion 22 comprises a U-shaped transposition shaft 221, an opening end of the U-shaped transposition shaft 221 forms a clamping end for clamping the battery, a connecting shaft section 222 is arranged on one side of the U-shaped transposition shaft 221, which is far away from the opening end of the U-shaped transposition shaft 221, the connecting shaft section 222 is rotatably arranged on the transmission side plate 211 through a bearing, the connecting shaft section 222 is connected with the rotary driving motor 212 through a transmission wheel, and the rotary driving motor 212 can drive the U-shaped transposition shaft 221 through the transmission wheel to drive the battery to be located at the first clamping position and the second clamping position.

By adopting the technical scheme, the automatic welding device for the lithium battery is formed by combining a mechanical simple structural component, a pneumatic principle and an electrical control system according to the structural characteristics of the battery. The device structure is simple and easy, battery loading and unloading are quick, welding position is accurate, firm, has improved the production efficiency and the product quality of battery greatly.

The automatic welding device for the lithium battery further comprises a positioning mechanism 40, and the positioning mechanism 40 comprises a positioning cylinder 41. The positioning cylinder 41 is connected with the transmission side plate 211, the output end of the positioning cylinder 41 is provided with a positioning pin 42, the U-shaped transposition shaft 221 is provided with a positioning hole 223 matched with the positioning pin 42, and when the U-shaped transposition shaft 221 is located at the first clamping position and the second clamping position, the positioning cylinder 41 can drive the positioning pin 42 to extend into the positioning hole 223 so as to position the U-shaped transposition shaft 221.

The end of the side plate of the opening end of the U-shaped transposition shaft 221 is provided with a first clamping groove 224.

The pressing part 32 includes a pressing plate 313, and the second driving assembly 31 includes a pressing side plate 311 and a pressing cylinder 312. The pressing-side plate 311 is connected to the support base 10, and the pressing-side plate 311 is disposed opposite to the driving-side plate 211. The pressing cylinder 312 is connected to the pressing-side plate 311. The pressing plate 313 is connected to an output end of the pressing cylinder 312, and the pressing cylinder 312 can drive the pressing plate 313 to move between the pressing-side plate 311 and the driving-side plate 211 to the pressing position and the releasing position.

The second driving assembly 31 further includes a guide 314, the guide 314 is connected to at least one of the support base 10 and the pressing side plate 311, and the pressing plate 313 is movably connected to the guide 314.

As shown in fig. 5, the pressing mechanism 30 further includes a battery cover 503. As shown in fig. 6, the pressing mechanism 30 further includes a linear slider 5014, a third bearing 5015, a bearing housing 5017, a lock nut 5018, and a rotary flange 5019.

The automatic welding device for the lithium battery further comprises a buffer mechanism 50, the buffer mechanism 50 is connected with the pressing plate 313, and when the pressing plate 313 is located at the pressing position, the buffer mechanism 50 is abutted to the battery cover plate.

The damper mechanism 50 includes: the cover plate positioning seat 51 is connected with the pressing plate 313, and at least one equal-height limiting piece 52 is arranged on the cover plate positioning seat 51; the battery cover plate comprises a cover plate positioning plate 53, the cover plate positioning plate 53 is connected with the cover plate positioning seat 51 through an equal-height limiting piece 52, at least one elastic piece 54 is arranged between the cover plate positioning seat 51 and the cover plate positioning plate 53, and a first limiting hole for placing a battery cover plate is formed in one side, facing the rotating mechanism 20, of the cover plate positioning plate 53. This arrangement can prevent the battery from being damaged by the pressing plate 313.

A second limiting hole 531 is formed in the groove wall of the first limiting hole, a limiting part is arranged in the second limiting hole 531, the limiting part is provided with a locking position protruding out of the groove wall of the first limiting hole to lock the battery cover plate in the first limiting hole, and the limiting part is provided with an avoiding position located in the second limiting hole to release the battery cover plate.

As shown in fig. 7, the first position-limiting hole is a cover positioning groove 5024. The limiting member includes a steel ball 5025, a compression spring 5026, and a set screw 5027.

Lithium cell automatic welder still includes climbing mechanism 60, and climbing mechanism 60 includes third drive assembly 61 and supporting part 62, and third drive assembly 61 is connected with supporting seat 10, and supporting part 62 is used for bearing the battery, and third drive assembly 61 drives supporting part 62 along vertical direction and drives the battery and remove to first clamping position and second clamping position.

The third driving assembly 61 includes the lift cylinder 611, the lift cylinder 611 is connected with the supporting seat 10, the bearing part 62 includes a supporting plate 621, the supporting plate 621 is connected with the output end of the lift cylinder 611, the end of the supporting plate 621 towards one side of the pressing mechanism 30 is provided with two limiting pieces 622, the two limiting pieces 622 are arranged oppositely to form a limiting space for accommodating the battery, and the end of at least one limiting piece 622 is provided with a second clamping groove 623. The arrangement can ensure that the battery can stably enter a welding position.

The third drive assembly 61 further comprises: one or more guide rods 612 are provided, a first end of each guide rod 612 is connected with the support plate 621, and a second end of each guide rod 612 is movably connected with the support base 10.

As shown in fig. 4, the jacking mechanism 60 further includes a jacking cylinder mounting plate 401, a guide bushing 404, and a jacking stopper 405.

In an alternative embodiment, as shown in fig. 8, the battery cover plate 503 includes: a battery positive post 5031, a battery negative post 5032, an aluminum connection tab notch 5033, and an aluminum connection tab beveled guide edge 5034. The support base 10 includes a connection hole 601, and the connection hole 601 is connected with an XY axis sliding table of the laser welding machine.

Initial state of lithium cell automatic welder: the pressing air cylinder 312 is in a retracted state, the lifting air cylinder 611 is in an extended state, the U-shaped transposition shaft 221 is in an original position state and is horizontal to the supporting plate 621, and the positioning air cylinder 41 extends the positioning pin 42 and is inserted into the positioning hole 223.

Welding process of the automatic welding device for the lithium battery: the battery cover plate 503 is installed into the cover plate positioning groove 5024 by a manipulator or manually, at the same time, the steel balls 5025 on the two sides of the cover plate positioning groove 5024 are squeezed open, the battery cover plate 503 is tightly clamped in the cover plate positioning groove 5024 by the steel balls 5025 under the reaction force of the compression spring 5026, after the cover plate is installed, the lithium battery 71 is placed on the supporting plate of the supporting plate 621 by the manipulator or manually, the rear end of the aluminum connecting block 201 is installed into the first clamping groove 224 of the U-shaped transposition shaft 221 while the cover plate is placed, the front end of the aluminum connecting block 201 is installed into the second clamping groove 623 of the limiting sheet 622 of the left aluminum connecting block, after the battery is installed in place, the compressing cylinder 312 extends out, the aluminum connecting block 201 slides into the groove along the aluminum connecting strip guide 5034 of the aluminum connecting sheet notch 5033 of the battery cover plate 503 under the action of the aluminum connecting block guide bevel edge 202, and after the aluminum connecting block 201 is completely matched with the battery cover plate 503 and bears a certain reaction force of the elastic member 54, after the pressing cylinder 312 is pressed in to reach the extending limit position, the laser welding machine CCD photographs and positions, the laser welding head 70 is close to the battery and welds according to a programmed program, after the welding of the connecting seam between the positive side aluminum connecting block 201 and the negative side aluminum connecting block of the battery cover plate 503 is finished, the laser welding head 70 returns to the original position, the lifting cylinder 611 and the positioning cylinder 41 retract at the same time, the positioning pin 42, the left aluminum connecting block limiting piece 622 and the left aluminum connecting block limiting piece 622 synchronously separate from the positioning hole 223 and the aluminum connecting block 201, until the lifting cylinder 611 and the positioning cylinder 41 reach the retracting limit position, the rotary driving motor 212 starts to rotate by 180 degrees according to the set program, the U-shaped transposition shaft 221 is driven to rotate synchronously through the first stepping transmission wheel 303, the stepping belt 304 and the second stepping transmission wheel 305, after the U-shaped transposition shaft 221 rotates by 180 degrees, the lifting cylinder 611 and the positioning cylinder 41 extend, the rotation angle of the secondary positioning U-shaped transposition shaft 221 and the aluminum connecting block 201, after the lifting cylinder 611 and the positioning cylinder 41 reach the extension limiting positions, the laser welding machine CCD shoots and positions, the laser welding head 70 starts to be close to the battery to be welded according to a programmed program, after the welding of the aluminum connecting block 201 on the negative and positive sides of the battery cover plate 503 is finished, the laser welding head 70 and the pressing cylinder 312 return to the original positions, the cover plate positioning groove 5024 is synchronously separated from the welded battery cover plate 503, the welded battery is taken out by a manipulator or a worker, and the process is repeated.

By adopting the technical scheme, the automatic welding method for the double tabs on the two sides of the lithium battery is provided, so that the battery can realize all-dimensional limiting, positioning accurate control and automatic switching of welding positions in the welding process of the tabs on the two sides. The whole welding process does not need manual interference. The method is suitable for all lithium batteries, the battery taking and placing are rapid and convenient, the welding positioning is accurate, the welding position conversion is rapid, the method is simple and easy to implement, the operability is strong, and the automatic welding of the double tabs on the two sides of the lithium battery can be realized. Lithium cell automatic welder cooperates laser-beam welding machine to reach high-efficient, high-quality automatic weld effect of lithium cell both sides double-pole ear

The technical scheme of this application has adopted lithium cell welding accessory's all-round machinery spacing, and limit structure includes: the battery cell plane is limited, the cover plate groove and the elastic marble are limited, the inner surface and the outer surface of the aluminum connecting strip are mechanically limited, the end surfaces of two ends of the aluminum connecting strip are mechanically limited, the upper end surface and the lower end surface of the aluminum connecting strip are mechanically limited, and the middle distance of the aluminum connecting strip is mechanically limited. The accurate positioning device for welding position conversion comprises an electric servo rotary control device, an accurate position conveying device, a mechanical pneumatic thimble positioning device, a CCD welding seam photographing and positioning device and an electric system, wherein each mechanical device of a whole closed-loop control system is matched with the electric system, one-key starting is realized, a side inclined laser welding method without manual operation is adopted, the battery position fixing and welding slag control are facilitated, the automatic welding of double-lug at two sides of a lithium battery is realized, the production efficiency is greatly improved, the labor intensity of staff operation is reduced, the product quality is improved, and potential safety hazards are eliminated. The automatic welding device for the lithium battery solves the problems of high labor intensity of workers, difficulty in battery assembly, difficulty in positioning and low efficiency caused by the fact that the internal structure of the battery is complicated and the design of a welding tool is unreasonable for a long time.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement 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 lithium cell automatic welder which characterized in that includes:

a support base (10);

the rotating mechanism (20) comprises a first driving assembly (21) and a clamping part (22), the first driving assembly (21) is connected with the supporting seat (10), the clamping part (22) is provided with a first clamping position and a second clamping position for bearing a battery to be welded, and the first driving assembly (21) is used for driving the clamping part (22) to be located at the first clamping position and the second clamping position;

the pressing mechanism (30) comprises a second driving assembly (31) and a pressing portion (32), the second driving assembly (31) is connected with the supporting seat (10), the second driving assembly (31) is arranged opposite to the first driving assembly (21), the pressing portion (32) is provided with a pressing position and a releasing position, the second driving assembly (31) is used for driving the pressing portion (32) to be located at the pressing position and the releasing position, and when the pressing portion (32) is located at the pressing position, the pressing portion (32) is abutted to a battery cover plate of the battery placed on the clamping portion (22).

2. The automatic welding device of lithium batteries according to claim 1, characterized in that said first driving assembly (21) comprises:

the transmission side plate (211), the transmission side plate (211) is connected with the supporting seat (10);

a rotation drive motor (212), the rotation drive motor (212) being connected to the transmission-side plate (211);

the driving wheel is connected with the side plate (211) on the driving side, the driving wheel is connected with the output end of the rotary driving motor (212), the clamping part (22) is connected with the rotary driving motor (212) through the driving wheel, the rotary driving motor (212) can drive the clamping part (22) to rotate to the first clamping position and the second clamping position along the rotation axis, and the rotation axis extends in the horizontal direction.

3. The automatic welding device for lithium batteries according to claim 2, characterized in that said clamping part (22) comprises:

the battery clamping device comprises a U-shaped transposition shaft (221), wherein an opening end of the U-shaped transposition shaft (221) forms a clamping end used for clamping the battery, a connecting shaft section (222) is arranged on one side of the opening end of the U-shaped transposition shaft (221), which is far away from the U-shaped transposition shaft (221), of the U-shaped transposition shaft (221), the connecting shaft section (222) is rotatably arranged on a side plate (211) on the transmission side through a bearing, the connecting shaft section (222) is connected with a rotary driving motor (212) through a transmission wheel, and the rotary driving motor (212) can drive the U-shaped transposition shaft (221) to drive the battery to be located in a first clamping position and a second clamping position through the transmission wheel.

4. The automatic welding device for lithium batteries according to claim 3, further comprising a positioning mechanism (40), wherein the positioning mechanism (40) comprises:

the positioning cylinder (41), the positioning cylinder (41) with transmission side curb plate (211) are connected, the output of positioning cylinder (41) is provided with locating pin (42), be provided with on U-shaped transposition axle (221) with locating pin (42) matched with locating hole (223), U-shaped transposition axle (221) is located first clamping position with during the second clamping position, positioning cylinder (41) can drive locating pin (42) extend and set up in locating hole (223) with right U-shaped transposition axle (221) advances line location.

5. The automatic welding device for the lithium battery as claimed in claim 3, wherein a first clamping groove (224) is formed at the end part of the side plate at the opening end of the U-shaped transposition shaft (221).

6. The automatic welding device for lithium batteries according to claim 2, characterized in that said pressing portion (32) comprises a pressing plate (313), said second driving assembly (31) comprising:

a pressing side plate (311), wherein the pressing side plate (311) is connected with the supporting seat (10), and the pressing side plate (311) is arranged opposite to the transmission side plate (211);

a pressing cylinder (312), wherein the pressing cylinder (312) is connected with the pressing side plate (311);

the pressing plate (313) is connected with the output end of the pressing cylinder (312), and the pressing cylinder (312) can drive the pressing plate (313) to move between the pressing side plate (311) and the transmission side plate (211) to the pressing position and the releasing position.

7. The automatic welding device for lithium batteries according to claim 6, characterized in that said second driving assembly (31) further comprises:

the guide rail (314), the guide rail (314) is connected with at least one of the supporting seat (10) and the pressing side plate (311), and the pressing plate (313) is movably connected with the guide rail (314).

8. The automatic welding device for lithium batteries according to claim 6, further comprising a buffer mechanism (50), wherein the buffer mechanism (50) is connected with the pressing plate (313), and when the pressing plate (313) is located at the pressing position, the buffer mechanism (50) is abutted to the battery cover plate.

9. The automatic welding device for lithium batteries according to claim 8, characterized in that said buffer mechanism (50) comprises:

the cover plate positioning seat (51), the cover plate positioning seat (51) is connected with the pressing plate (313), and at least one equal-height limiting piece (52) is arranged on the cover plate positioning seat (51);

the battery cover plate positioning structure comprises a cover plate positioning plate (53), wherein the cover plate positioning plate (53) is connected with a cover plate positioning seat (51) through an equal-height limiting piece (52), at least one elastic piece (54) is arranged between the cover plate positioning seat (51) and the cover plate positioning plate (53), and a first limiting hole for placing the battery cover plate is formed in one side, facing the rotating mechanism (20), of the cover plate positioning plate (53).

10. The automatic welding device for lithium batteries according to claim 9, wherein a second limiting hole (531) is formed in a groove wall of the first limiting hole, a limiting member is disposed in the second limiting hole (531), the limiting member has a locking position protruding from the groove wall of the first limiting hole to lock the battery cover plate in the first limiting hole, and the limiting member has an avoiding position located in the second limiting hole (531) to release the battery cover plate.

11. The automatic welding device for lithium batteries according to claim 1, further comprising a jacking mechanism (60), wherein the jacking mechanism (60) comprises a third driving assembly (61) and a bearing part (62), the third driving assembly (61) is connected with the supporting base (10), the bearing part (62) is used for bearing the batteries, and the third driving assembly (61) drives the bearing part (62) along a vertical direction to drive the batteries to move to the first clamping position and the second clamping position.

12. The automatic welding device for the lithium battery according to claim 11, wherein the third driving assembly (61) comprises a lifting cylinder (611), the lifting cylinder (611) is connected with the supporting base (10), the bearing portion (62) comprises a supporting plate (621), the supporting plate (621) is connected with an output end of the lifting cylinder (611), a limiting piece (622) is arranged at an end portion of the supporting plate (621) facing one side of the pressing mechanism (30), the number of the limiting pieces (622) is two, the two limiting pieces (622) are oppositely arranged to form a limiting space for accommodating the battery, and a second clamping groove (623) is formed at an end portion of at least one limiting piece (622).

13. The automatic welding device for lithium batteries according to claim 12, characterized in that said third driving assembly (61) further comprises:

the number of the guide rods (612) is one or more, the first end of each guide rod (612) is connected with the supporting plate (621), and the second end of each guide rod (612) is movably connected with the supporting seat (10).