CN219211967U - Battery welding equipment - Google Patents

Abstract

The utility model discloses a battery welding device, which comprises a device main body, wherein the device main body is provided with: the jig is used for clamping the shell of the battery; the positioning device comprises a rotatable positioning block, and the positioning block is used for propping the cover body against the opening end of the shell; the welding mechanism comprises a welding head and a driving device, wherein the driving device is used for driving the shell to rotate and the welding head is aligned with a welding seam between the shell and the cover body. The driving device comprises a first driving component and a second driving component, the first driving component is used for driving the jig to rotate, and the second driving component is used for driving the welding head to move in the horizontal direction and the vertical direction; the positioning device further comprises a telescopic piece, and the positioning block is arranged at the telescopic end of the telescopic piece. Compared with the prior art, the welding seam welding device can efficiently weld the welding seam of the square lithium battery, is simple in battery positioning and taking operation, and greatly improves the welding efficiency of the square lithium battery.

Description

Battery welding equipment

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to battery welding equipment.

Background

After the square lithium ion battery is assembled, the shell and the cover body are required to be welded and sealed. When the shell and the cover body are welded, the condition that the welding seam is positioned on the side surface of the shell (namely, surrounds the shell) exists, and aiming at the welding seam of the type, the welding mode commonly adopted in the lithium ion battery shell cover welding process of most of domestic lithium ion battery manufacturers at present is as follows: the battery is welded at a plurality of stations separately, and the battery moves on each welding station, and on every welding station, the battery is independent to be fixed a position, and soldered connection linear movement, every soldered connection only welds one side of battery, and this just results in the inefficiency of the welding mode of current square lithium ion battery, is difficult to satisfy square lithium battery's production demand.

Disclosure of Invention

The application provides battery welding equipment, which solves the problem of low welding efficiency of square lithium batteries in the prior art.

The utility model adopts the technical scheme that: a battery welding apparatus comprising an apparatus body provided with: the jig is used for clamping the shell of the battery; the positioning device comprises a rotatable positioning block, and the positioning block is used for abutting the cover body at the opening end of the shell; the welding mechanism comprises a welding head and a driving device, the driving device drives the shell to rotate, and the driving device drives the welding head to align with a welding seam between the shell and the cover body.

Further, the driving device comprises a first driving assembly and a second driving assembly, the first driving assembly is used for driving the jig to rotate, and the second driving assembly is used for driving the welding head to move in the horizontal direction and the vertical direction.

Further, the first driving assembly comprises a direct-drive motor, a first rotary table and a second rotary table, the first rotary table and the second rotary table are respectively arranged at two ends of the direct-drive motor, and the first rotary table and the second rotary table are driven by the direct-drive motor to synchronously rotate; the jig comprises a first clamping and aligning mechanism and a second clamping and aligning mechanism, wherein the first clamping and aligning mechanism is arranged on the first rotary table, the second clamping and aligning mechanism is arranged on the second rotary table, and the shell penetrates through the first clamping and aligning mechanism, the direct-driven motor and the second clamping and aligning mechanism.

Further, the device body comprises a vertical supporting plate, the direct-drive motor is embedded into the supporting plate, the first rotating disc and the second rotating disc are respectively arranged on two sides of the supporting plate, the positioning device is arranged opposite to the first rotating disc, and one side of the second rotating disc is the insertion side of the shell.

Further, the first clamping alignment mechanism comprises a first reference position and a first clamping assembly, and the first clamping assembly is used for pushing the battery to be abutted against the first reference position; the second clamping alignment mechanism comprises a second reference position and a second clamping assembly, wherein the second clamping assembly is used for pushing the battery to be abutted to the second reference position, and the first reference position and the second reference position are coaxial.

Further, the second driving assembly comprises a first guide rail and a second guide rail, the first guide rail is horizontally arranged on the equipment main body, the second guide rail is slidably arranged on the first guide rail, and the welding head is slidably arranged on the second guide rail.

Further, the welding mechanism is laser welding, and the driving device further comprises a laser energy controller.

Further, the positioning device further comprises a telescopic piece, the positioning block is arranged at the telescopic end of the telescopic piece, and the telescopic piece is in rotary connection with the positioning block.

Further, the equipment main body is provided with two sets of jigs and two sets of positioning devices, each set of jigs corresponds to one set of positioning device, the welding mechanism is provided with a welding head, and the two sets of jigs share one welding head.

Further, the welding mechanism also includes a dust removal assembly including a dust collection tube opposite the welding head.

Compared with the prior art, the battery welding equipment provided by the utility model has the advantages that the position of the welding line can be changed by driving the battery to rotate, so that the welding head can be aligned with the welding line to be welded in real time, the moving range of the welding head is reduced, the welding head can obtain a preset track only by simple calculation, the welding head can be aligned with the welding line to weld all the time in the process of rotating the battery, the clamp is loosened after the welding is finished, the battery is taken out, the welding mode can be used for efficiently welding the welding line of the square lithium battery, the positioning and taking operation of the battery are simple, and the welding efficiency of the square lithium battery is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the position structure of a housing and a cover of a battery according to the present utility model;

FIG. 2 is a schematic perspective view of a battery welding apparatus according to the present utility model;

FIG. 3 is a schematic perspective view illustrating another direction of a battery welding apparatus according to the present utility model;

FIG. 4 is a schematic diagram showing the relative positions of the fixture, the positioning device and the welding mechanism according to the present utility model;

FIG. 5 is a schematic diagram of a first clamping alignment mechanism of the jig according to the present utility model;

fig. 6 is a schematic diagram of a mechanism of the second clamping alignment mechanism of the jig according to the present utility model.

1. A first clamping alignment mechanism; 11. a first fixed block; 12. a second fixed block; 13. a first clamping block; 14. a second clamping block; 2. a second clamping alignment mechanism; 21. a third fixed block; 22. a fourth fixed block; 23. a third clamping block; 24. a fourth clamping block; 3. a housing; 4. a cover body; 5. an apparatus main body; 51. a base; 52. a support plate; 6. a jig; 7. a welding mechanism; 71. a welding head; 72. a dust removal assembly; 8. a first drive assembly; 81. a direct drive motor; 82. a first turntable; 83. a second turntable; 9. a second drive assembly; 91. a first guide rail; 92. a second guide rail; 10. a positioning device; 101. a positioning block; 102. a telescoping member.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides battery welding equipment which is mainly applied to welding of a shell and a cover body of a square lithium battery, as shown in fig. 1, the shell 3 of the square lithium battery is flat and square, one end of the shell 3 is provided with an opening, a battery core is inserted from the opening of the shell 3, the cover body 4 covers the opening of the shell 3 after the battery core is inserted, and a circle of welding seam is reserved between the cover body 4 and the shell 3.

Referring to fig. 2 to 6, the main structure of the battery welding device specifically proposed in the present application includes a device main body 5, a jig 6, a positioning device 10 and a welding mechanism 7, wherein the device main body 5 is used as a main supporting structure of the battery welding device, and the jig 6, the positioning device 10 and the welding mechanism 7 are integrally mounted on the device main body 5; it should be emphasized that the number of the jigs 6, the positioning devices 10 and the welding mechanisms 7 on the apparatus main body 5 is not limited in the present application, and different numbers of jigs 6, positioning devices 10 and welding mechanisms 7 may be provided on the apparatus main body 5 based on actual production requirements, for example, a set of jigs 6, a set of positioning devices 10 and a set of welding mechanisms 7 are integrally provided on the apparatus main body 5.

In this embodiment, two sets of jigs 6 and two sets of positioning devices 10 are disposed on each device main body 5, each set of jigs 6 corresponds to one set of positioning devices 10 and driving devices, and one welding head 71 is disposed on the device main body 5, and the two sets of jigs 6 share one set of welding head 71 of the welding mechanism 7, so that the welding efficiency of the square lithium battery can be improved in the actual production process.

Specifically, referring to fig. 2, the apparatus main body 5 includes a base 51 and a support plate 52, wherein the base 51 is disposed at the bottom end of the apparatus main body 5, the support plate 52 is vertically mounted on the base 51, the jig 6 is embedded in the support plate 52, the positioning device 10 is disposed on the base 51, the jig 6 clamps and positions the battery case 3, the positioning device 10 is disposed on one side of the jig 6 and is also disposed on one side of the battery case 3, the battery cover 4 faces the positioning device 10, the positioning device 10 abuts against the cover 4, so that tight contact is formed between the cover 4 and the case 3, the welding mechanism 7 is disposed on one side of the support plate 52 where the positioning device 10 is disposed, and after the positioning device 10 and the jig 6 cooperate to clamp and position the battery, the welding mechanism 7 starts to weld, and the main welding manner of the welding mechanism 7 is as follows: the welding mechanism 7 comprises a welding head 71 and a driving device, wherein the welding head 71 is used for aligning welding seams to perform welding work, the driving device is used for driving the jig 6 to rotate and synchronously driving the battery to rotate, and the driving device is also used for driving the welding head 71 to adjust the position in real time so as to align the welding seams.

Further, referring to fig. 2 and 5, the driving device in the present application includes a first driving component 8 and a second driving component 9, where the first driving component 8 is used to drive the jig 6 to rotate, and the second driving component 9 is used to drive the welding head 71 to move in the horizontal direction and the vertical direction.

In a specific embodiment, referring to fig. 4-6, the jig 6 and the first driving assembly 8 are combined in the following manner: the first driving assembly 8 comprises a direct-drive motor 81, a first rotating disc 82 and a second rotating disc 83, the direct-drive motor 81 is embedded in the supporting plate 52, a central hole is formed in the middle of the direct-drive motor 81, the central hole communicates two sides of the supporting plate 52, the first rotating disc 82 and the second rotating disc 83 are respectively arranged on two sides of the direct-drive motor 81, namely, the first rotating disc 82 and the second rotating disc 83 are respectively arranged on two sides of the supporting plate 52, and when the direct-drive motor 81 rotates, the first rotating disc 82 and the second rotating disc 83 on two sides are synchronously driven to synchronously rotate; the specific structure of the jig 6 comprises a first clamping alignment mechanism 1 and a second clamping alignment mechanism 2, wherein the first clamping alignment mechanism 1 is arranged on a first turntable 82, the second clamping alignment mechanism 2 is arranged on a second turntable 83, the first clamping alignment mechanism 1 and the second clamping alignment mechanism 2 synchronously rotate along with the rotation of the turntable, the first clamping alignment mechanism 1 in the application specifically comprises a first fixing block 11, a second fixing block 12 and a first clamping assembly, the first fixing block 11 and the second fixing block 12 are mutually perpendicular to form an included angle of 90 degrees, two side surfaces of the included angle formed by the first fixing block 11 and the second fixing block 12 are planes, the included angle formed by the first fixing block 11 and the second fixing block 12 is used as a first reference position of a shell 3 of the battery, the first fixing block 11 can limit one side of the horizontal direction of the battery, and the second fixing block 12 can be used for horizontally supporting the battery; the first clamping assembly is used for clamping the shell 3 of the battery, the first clamping assembly specifically comprises a first clamping block 13 and a second clamping block 14, the first clamping block 13 is arranged opposite to the first fixed block 11, the second clamping block 14 is arranged opposite to the second fixed block 12, the first clamping block 13 can move towards the first fixed block 11 to realize the clamping action, and the second clamping block 14 can move towards the second fixed block 12 to realize the clamping action; similarly, the second clamping alignment mechanism 2 comprises a third fixing block 21, a fourth fixing block 22 and a second clamping assembly, an included angle formed between the third fixing block 21 and the fourth fixing block 22 is used as a second reference position of the battery shell 3, the third fixing block 21 and the fourth fixing block 22 are perpendicular to each other, the second clamping assembly is also used for clamping the battery shell 3, the second clamping assembly specifically comprises a third clamping block 23 and a fourth clamping block 24, the third clamping block 23 moves relatively towards the third fixing block 21, and the fourth clamping block 24 moves relatively towards the fourth fixing block 22; the arrangement has the advantages that the coaxiality of the first reference position and the second reference position can be better ensured, and the clamping mode that the clamping block is used for pushing the clamping battery cell in one direction is adopted, so that the difficulty of ensuring the positioning of the battery is greatly reduced, but the precision is improved; the first reference position, the second reference position and the central hole are communicated and kept coaxial, the battery passes through the central hole, two ends of the battery are synchronously clamped and positioned by the first clamping and aligning mechanism 1 and the second clamping and aligning mechanism 2, the first driving assembly 8 drives the battery to rotate, so that the position of a welding seam can be adjusted, the welding seam positioned on the side surface of the battery can be placed at the top in a mode of rotating the battery, and then the welding head 71 does not need to weld around the battery, so that the welding difficulty of the welding seam of the type is greatly reduced.

Correspondingly, referring to fig. 2, the second driving assembly 9 includes a first rail 91 and a second rail 92, the first rail 91 is horizontally disposed on the supporting plate 52, the second rail 92 is mounted on the first rail 91 through a sliding member, and the sliding member slides horizontally on the first rail 91, so as to drive the second rail 92 to slide horizontally; the second guide rail 92 is vertically arranged, the welding head 71 is mounted on the second guide rail 92, the welding head 71 can slide up and down on the second guide rail 92, and the position of the welding head 71 on the two-dimensional plane can be adjusted in such a way, so that when the battery rotates, the position of the welding head 71 is adjusted to enable the welding head 71 to be always aligned with the welding seam.

Further, referring to fig. 2, the welding mechanism 7 further includes a dust removing assembly 72, and the dust removing assembly 72 includes a dust suction pipe and a dust collector opposite to the welding head 71, and the dust collector operates to form negative pressure, thereby sucking dust or fine particles generated at the welding head 71, and thus greatly improving welding quality.

Further, referring to fig. 2, the positioning device 10 is disposed on the base 51, the positioning device 10 includes a positioning block 101, and the positioning block 101 is opposite to the battery clamped on the jig 6, and the battery is inserted into the jig 6 from one side of the support plate 52 opposite to the positioning device 10 until the battery is inserted into the jig 6 to abut against the positioning block 101 to reach the limit position of insertion, at this time, the jig 6 clamps the battery, the positioning block 101 abuts against the cover 4, so that the cover 4 and the housing 3 always keep the relative position fixed in the rotating process, and meanwhile, the positioning block 101 is rotatable, and the axis of the positioning block 101 is consistent with the rotation axis of the housing 3, so that the positioning block 101 and the cover 4 can synchronously rotate, and no large friction is generated between the positioning block 101 and the cover 4.

Still further, referring to fig. 2, the positioning device 10 in the present application further includes a telescopic member 102, the positioning block 101 is disposed at a telescopic end of the telescopic member 102, the telescopic member 102 is rotationally connected with the positioning block 101, in this embodiment, the battery is not required to be inserted into and abutted against the positioning block 101 for limiting, the insertion position of the battery is accurately controlled by setting the insertion parameters of the mechanical device, and then the telescopic member 102 extends out, so that the positioning of the housing 3 and the cover 4 can be ensured by abutting the positioning block 101 against the cover 4.

The welding mode of this application is: the battery is inserted into the jig 6 from one side of the supporting plate 52, the jig 6 clamps the shell 3 of the battery, the positioning device 10 stretches out to prop the cover body 4 on the shell 3, at the moment, the welding head 71 moves to the upper side of the battery, the welding head 71 moves to perform horizontal linear motion, the welding seam at the upper end starts to be welded to the other end from one end, then the jig 6 is rotated, the welding seam at the side is rotated to the upper end face, in the process, the welding head 71 simultaneously performs adjustment on the position to align with the welding seam at the arc-shaped included angle, and the welding strength of the welding head 71 needs to be synchronously attenuated because the relative movement speed of the welding seam at the arc-shaped included angle and the welding head 71 can be reduced at the moment, so that the welding strength of the welding head 71 is required to be synchronously attenuated, the welding is uniform and consistent, the welding is completed until the whole battery is rotated by 360 degrees, the welding operation is completed, the clamp is released, the battery is taken out, the positioning and the taking operation of the battery can be efficiently welded, the positioning and the taking operation of the battery are simple, the welding seam can change the position of the welding seam in the welding process, the welding seam can be realized by driving the battery to rotate, the welding seam can be aligned with the welding seam in real time, the welding seam can be greatly, the welding efficiency can be greatly and the welding seam can be welded by the welding seam and the welding position of the welding head can be compared with the welding seam.

Preferably, the welding mechanism 7 in the present application is laser welding, and the driving device further comprises a laser energy controller, wherein the laser energy controller is used for flexibly adjusting and controlling the laser intensity, so as to ensure the welding effect.

It should be noted that, in the prior art, it is common for the welding head 71 to be automatically aligned with the weld, and this is not particularly limited, but only illustrated: the method comprises the steps of obtaining welding parameters input by a user, wherein the welding parameters comprise laser type parameters and laser waveform parameters, the laser waveform parameters comprise a plurality of laser curve parameters, each laser curve parameter comprises a laser duration parameter and laser energy parameters of a start time and a stop time of the duration, generating a laser waveform execution list according to the plurality of laser curve parameters, sending the laser waveform execution list to a laser waveform design controller, controlling the laser waveform design controller to generate a laser waveform matched with the laser welding parameters and then sending the laser waveform to a laser welding subsystem so as to enable the laser welding subsystem to carry out laser welding on elements to be welded, in the laser welding process, firstly obtaining the duration parameters of the plurality of laser curves and the laser energy parameters of the start time and the stop time of the duration according to the laser welding parameters input by the user, discretizing the connection waveforms of the laser curves, then queuing the discretized parameters according to a time sequence waveform, and sending the queue package to the laser waveform design controller, wherein the laser energy waveforms can enable numerical value changes in the laser waveform execution list to be changed, and laser waveform output by the laser welding subsystem can be edited, so that high-precision welding can be realized.

The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. A battery welding apparatus comprising an apparatus main body, wherein the apparatus main body is provided with:

the jig is used for clamping the shell of the battery;

the positioning device comprises a rotatable positioning block, and the positioning block is used for abutting the cover body at the opening end of the shell;

the welding mechanism comprises a welding head and a driving device, the driving device drives the shell to rotate, and the driving device drives the welding head to align with a welding seam between the shell and the cover body.

2. The battery welding apparatus of claim 1, wherein the driving device comprises a first driving assembly and a second driving assembly, the first driving assembly is used for driving the jig to rotate, and the second driving assembly is used for driving the welding head to move in a horizontal direction and a vertical direction.

3. The battery welding apparatus according to claim 2, wherein the first driving assembly includes a direct-drive motor, a first turntable, and a second turntable, the first turntable and the second turntable being provided at both ends of the direct-drive motor, respectively, the direct-drive motor driving the first turntable and the second turntable to rotate synchronously; the jig comprises a first clamping and aligning mechanism and a second clamping and aligning mechanism, wherein the first clamping and aligning mechanism is arranged on the first rotary table, the second clamping and aligning mechanism is arranged on the second rotary table, and the shell penetrates through the first clamping and aligning mechanism, the direct-driven motor and the second clamping and aligning mechanism.

4. The battery welding apparatus according to claim 3, wherein the apparatus body includes a vertical support plate in which the direct drive motor is embedded, the first turntable and the second turntable are provided on both sides of the support plate, respectively, the positioning device is provided opposite to the first turntable, and one side of the second turntable is an insertion side of the housing.

5. The battery welding apparatus of claim 3, wherein the first clamping alignment mechanism comprises a first datum and a first clamping assembly for urging the battery against the first datum; the second clamping alignment mechanism comprises a second reference position and a second clamping assembly, wherein the second clamping assembly is used for pushing the battery to be abutted to the second reference position, and the first reference position and the second reference position are coaxial.

6. The battery welding apparatus of claim 2, wherein the second drive assembly includes a first rail and a second rail, the first rail being horizontally disposed on the apparatus body, the second rail being slidably disposed on the first rail, the welding head being slidably disposed on the second rail.

7. The battery welding apparatus of claim 2, wherein the welding mechanism is laser welding and the driving device further comprises a laser energy controller.

8. The battery welding apparatus of claim 1, wherein the positioning device further comprises a telescopic member, the positioning block is disposed at a telescopic end of the telescopic member, and the telescopic member is rotatably connected with the positioning block.

9. The battery welding apparatus according to claim 1, wherein the apparatus main body is provided with two sets of the jigs and two sets of the positioning devices, each set of the jigs corresponds to one set of the positioning devices, the welding mechanism is provided with one welding head, and the two sets of the jigs share one welding head.

10. The battery welding apparatus of claim 1, wherein the welding mechanism further comprises a dust removal assembly comprising a dust extraction tube opposite the welding head.

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