CN106808043B

CN106808043B - Angle adjusting device

Info

Publication number: CN106808043B
Application number: CN201710167482.3A
Authority: CN
Inventors: 蒋烜; 徐红帅
Original assignee: Wuxi Autowell Technology Co Ltd
Current assignee: Wuxi Autowell Technology Co Ltd
Priority date: 2017-03-21
Filing date: 2017-03-21
Publication date: 2022-07-15
Anticipated expiration: 2037-03-21
Also published as: CN106808043A

Abstract

The invention discloses an angle adjusting device, which solves the technical problem that a welding head in the prior art cannot accurately align a lug. This angle adjusting device includes the fixed bolster, install the pivot on the fixed bolster, the bonding tool mounting panel is installed to the pivot outer end, and the bonding tool that is adjusted is installed on the bonding tool mounting panel, can center on the pivot rotates, the fixed bolster with be connected with adjustment stop device between the bonding tool mounting panel. The invention realizes the automatic welding of the battery core tab and the busbar and improves the battery assembly operation efficiency and the battery assembly quality. According to the invention, the welding head is arranged on the angle adjusting device, so that the accuracy of the welding head in aligning the lug is improved, effective welding is ensured, the battery assembling quality is improved, and the product percent of pass is higher.

Description

Angle adjusting device

Technical Field

The invention relates to an angle adjusting device, in particular to an angle adjusting device for adjusting the orientation of a welding head.

Background

At present, the soft package battery cell is more and more widely used. The existing soft package battery cell structure is shown in fig. 1 and fig. 2, a left end plate 6-1 and a right end plate 6-5 are arranged on the outer side, a plurality of groups of battery cell modules are arranged in the existing soft package battery cell structure, four groups of battery cell modules are shown in fig. 1 and fig. 2, and a series connection structure is arranged between the battery cell modules. There are also batteries with more than four sets of cell modules in the prior art, for example, five or six sets are provided.

In fig. 1, nine parallel soft-packaged battery cells 6-3 are arranged inside the battery cell module, in fig. 2, ten parallel soft-packaged battery cells 6-3 are arranged inside the battery cell module, and a packaging auxiliary material is further arranged inside the battery cell module.

The arrangement structure of the soft package battery cell 6-3 and the packaging auxiliary materials is specifically as follows: the left side of each group of electric core modules is provided with mica sheets 6-7 (double-faced adhesive tape), EVA6-2 is overlapped on two sides of each mica sheet 6-7, double-faced adhesive tape 6-4 or EVA6-2 is overlapped between adjacent soft-packaged electric cores 6-3, and the double-faced adhesive tape 6-4 and the EVA6-2 are arranged at intervals.

In the process of assembling the soft-package battery cell module 6, the tabs 6-6 of the soft-package battery cells 6-3 need to be welded on the busbar, because the number of the soft-package battery cells 6-3 is large, the operation efficiency is low when manual welding is adopted, the welding quality cannot be guaranteed, for example, insufficient welding and welding leakage exist, the battery quality is reduced, and the product reject ratio is high. If automatic welding is adopted, the problem of the orientation of a welding head during welding needs to be solved, and the welding quality can be influenced when the orientation of the welding head is improper.

Disclosure of Invention

In view of the above problems, the present invention provides an angle adjusting device, wherein a welding head is mounted on the angle adjusting device, and the welding head can rotate around the axis of a certain coordinate axis, so as to realize angle adjustment of the orientation of the welding head, improve the accuracy of the welding head in aligning with a tab, ensure effective welding, and improve the battery assembling quality.

The invention also provides a welding head module which is provided with the angle adjusting device.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the invention provides an angle adjusting device which comprises a fixing support, wherein a rotating shaft is installed on the fixing support, a welding head installing plate is installed at the outer end of the rotating shaft, an adjusted welding head is installed on the welding head installing plate and can rotate around the rotating shaft, and an adjusting limiting device is connected between the fixing support and the welding head installing plate.

Further, the adjusting and limiting device comprises a lower limiting block and an upper limiting block, the lower limiting block is fixed on the fixing support, the upper limiting block is fixed on the welding head mounting plate, a bolt is connected between the lower limiting block and the upper limiting block, a nut is mounted at the upper end of the bolt, a limiting column is fixed on the nut, a limiting hole is formed in the upper limiting block, the limiting column is inserted into the limiting hole, and the nut drives the bolt to move up and down when the welding head mounting plate is rotated; and the lower limiting block is provided with a clamping block, the clamping block clamps and fixes the lower end of the bolt, the clamping block is loosened when the welding head mounting plate is rotated, and the clamping block is screwed when the rotation is stopped.

Furthermore, a gap is reserved between the lower limiting block and the welding head mounting plate, and a gap is reserved between the upper limiting block and the fixed support.

Further, the lower end surface of the bolt is provided with an anti-skid convex line; the limiting hole on the upper limiting block is a long hole.

Furthermore, adjusting the limiting device comprises a plurality of threaded holes formed in the fixing support, bolts are installed in the threaded holes, the outer ends of the bolts abut against the welding head mounting plate, the bolts are loosened when the welding head mounting plate is rotated, and the bolts are screwed down after being adjusted in place.

Furthermore, a scale plate is arranged on the fixed support, and a pointer is arranged on the mounting plate; one side of the fixed support is provided with a convex fixed block, and the fixed block is provided with a mounting hole.

The invention provides a welding head module, which comprises a welding head, wherein the welding head is arranged on a three-axis moving platform and comprises an X-axis driving module, a Y-axis driving module and a Z-axis driving module; the X-axis, Y-axis or Z-axis driving module is provided with the angle adjusting device, the welding head is mounted on the angle adjusting device, and the angle adjusting device can rotate around the Y-axis direction to adjust the orientation of the welding head.

Furthermore, the welding head adopts a laser welding head, and the X-axis driving module, the Y-axis driving module and the Z-axis driving module adopt electric cylinders.

Further, a mounting seat is arranged on a driving module for mounting the welding head, the driving module drives the mounting seat to reciprocate, and the angle adjusting device is fixedly mounted on the mounting seat through bolts.

Further, a camera is further installed beside the welding head, and the camera shoots a welding result to detect the welding quality.

The angle adjusting device adopting the structure has the following advantages:

according to the invention, the welding head is arranged on the angle adjusting device, and can rotate around the axis of a certain coordinate axis, so that the angle adjustment of the orientation of the welding head is realized, the accuracy of the welding head in aligning with the lug is improved, effective welding is ensured, the battery assembly quality is improved, and the product percent of pass is higher.

The welding head module adopting the structure has the following advantages:

according to the invention, the welding head is arranged on the three-axis moving platform, and the welding head automatically shifts to weld, so that the automatic welding of the battery core lug and the busbar is realized, and the battery assembly operation efficiency is improved.

Drawings

Fig. 1 is an exploded view of a soft-package battery cell module, in which nine modules are connected in parallel and four modules are connected in series;

fig. 2 is an exploded view of a soft-package cell module, in which ten modules are connected in parallel and four modules are connected in series;

Fig. 3 is a perspective view of a battery tab welding apparatus to which the welding head module of the present invention is mounted;

fig. 4 is a perspective view of a weld head module of the present invention;

fig. 5 is a perspective view of a centering module provided to the battery tab welding apparatus;

fig. 6 is a perspective view of a lower module provided to the battery tab welding apparatus;

FIG. 7 is an enlarged partial view of FIG. 3;

fig. 8 is a perspective view of a horn module of the present invention (the rear side of the horn);

FIG. 9 is a perspective view (rear side partial) of the angle adjustment apparatus of the present invention;

fig. 10 is a perspective view (front side) of the angle adjusting apparatus of the present invention.

In the figure: 1. an upper module; 1-1. an X-axis driving module; 1-2. a welding head; 1-3. a Y-axis driving module; 1-4. a Z-axis driving module; 1-5. a camera; 1-6, an angle adjusting device; 1-6-1, fixing the bracket; 1-6-2. a welding head mounting plate; 1-6-3. a rotating shaft; 1-6-4, bolts; 1-6-5, a lower limiting block; 1-6-6. clamping blocks; 1-6-7, a nut; 1-6-8, upper limit block; 1-6-9, a scale plate; 1-7, mounting a base;

2. a middle module; 2-1. an X-axis driving module; 2-2. a Z-axis driving module; 2-3, cantilever; 2-4, a bracket; 2-5. outer sensor; 2-6, optical cable; 2-7, a sensor protective sleeve; 2-8, mounting a base;

3. a lower module; 3-1. an X-axis driving module; 3-2. a Z-axis driving module; 3-3. cantilever; 3-4, a bracket; 3-5. inner sensor; 3-6, optical cable; 3-7, a sensor protective sleeve; 3-8, mounting a base;

4. A rollgang; 4-1, lifting the cylinder; 4-2, positioning a block;

5. a base plate;

6. the soft package battery cell module; 6-1, a left end plate; 6-2. EVA; 6-3, soft package battery cell; 6-4, double-sided adhesive tape; 6-5, a right end plate; 6-6, pole ear; 6-7, mica sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The welding head module of the present invention can be applied to a battery tab welding device, and for convenience of describing the specific structure of the welding head module of the present invention, the following embodiments first describe the specific structure of the battery tab welding device, and at the same time describe the specific structure of the welding head module.

Example 1

As shown in fig. 3, an embodiment of a battery tab welding apparatus is shown, in this embodiment, a battery tab welding apparatus includes a rollgang 4, a battery module to be welded with a tab is conveyed on the rollgang 4, a limiting device is disposed on the rollgang 4 to temporarily limit the battery module to be welded with the tab, a welding head 1-2 is disposed beside the rollgang 4, the welding head 1-2 can at least shift in three axes, a sensor is further disposed beside the rollgang 4, the sensor senses a position of a battery core tab in the limited battery module, and then guides the welding head 1-2 to shift to align with the tab for welding, so as to weld the battery core tab on a busbar (not shown, refer to a welding structure of the tab and the busbar in the prior art).

The welding heads 1-2 adopt laser welding heads, and the sensor adopts a photoelectric sensor. The sensor sends the position information of the battery cell lug to the system control unit, and the system control unit controls the movement of the welding head 1-2.

As shown in fig. 1 and fig. 2, because the number of the soft package battery cells 6-3 in the battery module is large, and there are intervals between the soft package battery cells 6-3, there are also intervals between the tabs 6-6, and a sensor must be set to find the positions of the tabs 6-6, so that welding can be performed.

As shown in fig. 3 and 4, the welding head 1-2 is mounted on a three-axis moving platform, and includes an X-axis driving module 1-1, a Y-axis driving module 1-3, and a Z-axis driving module 1-4. The driving modules adopt electric cylinders for linear driving and can stay at any position of a stroke.

As shown in fig. 3 and 7, the sensors are provided with two sets of positive and negative electrodes respectively corresponding to the battery core tabs (on the roller conveyor 4, the positive and negative electrodes of the battery core tabs are located at the inner and outer sides when the battery module is conveyed), and the two sets of positive and negative electrodes are divided into an outer sensor 2-5 and an inner sensor 3-5, which are all arranged on a three-axis moving platform and comprise an X-axis driving module, a Y-axis driving module and a Z-axis driving module. The X-axis driving modules 2-1 and 3-1 and the Z-axis driving modules 2-2 and 3-2 are all electric cylinders and can be linearly driven to stop at any position of a stroke.

As shown in fig. 3, the welding head 1-2 and the three-axis moving platform driving it constitute an upper module 1, the outer sensor 2-5 and the three-axis moving platform driving it constitute a middle module 2, and the inner sensor 3-5 and the three-axis moving platform driving it constitute a lower module 3.

Three groups of X-axis driving modules 1-1, 2-1 and 3-1 in the upper module 1, the middle module 2 and the lower module 3 are overlapped from top to bottom and are arranged in parallel, so that the design can save the space of equipment and reduce the volume of the equipment as much as possible. Dustproof organ covers can be arranged on the X-axis driving modules 1-1, 2-1 and 3-1.

As shown in fig. 4, the welding head 1-2 is specifically installed on a Z-axis driving module 1-4 in the upper module 1, a camera 1-5 is also installed beside the welding head 1-2, and the camera 1-5 captures a welding result for detecting the welding quality. The camera 1-5 can take pictures or videos for quality testing personnel to check whether the welding head 1-2 is effectively welded or not, and then the position and the angle of the welding head 1-2 are correspondingly adjusted until the best welding quality is achieved.

As shown in fig. 4 and 8, the Z-axis driving module 1-4 in the upper module 1 is provided with an angle adjusting device 1-6, the welding head 1-2 is mounted on the angle adjusting device 1-6, and the angle adjusting device 1-6 can rotate around the Y-axis to adjust the orientation of the welding head 1-2, for example, to change the orientation of the welding head 1-2 from vertical to inclined. The angle adjusting device 1-6 further improves the accuracy of the welding head 1-2 for aligning the pole lug and ensures effective welding.

As shown in fig. 5, a cantilever 2-3 is fixed on a Y-axis driving module (not marked in fig. 5, and may be a small cylinder or a pneumatic sliding table, and is installed at the upper end of a Z-axis driving module 2-2) in a middle module 2, a vertical support 2-4 is provided at the outer end of the cantilever 2-3, an outer sensor 2-5 is installed at the top end of the support 2-4, a sensor protection sleeve 2-7 is installed at the outer end of the cantilever 2-3, and the sensor protection sleeve 2-7 can reduce the influence of pollution during welding, such as strong light, smoke, and splashes that may be generated, on the sensor.

The sensor protective sleeves 2-7 are provided with through holes, the upper part of each sensor protective sleeve is wide, the lower part of each sensor protective sleeve is narrow, and the sensing light path of the sensor 2-5 at the outer side penetrates through the through holes of the sensor protective sleeves 2-7 to sense the lugs at the lower part. The sensor protective sleeves 2-7 are arranged on the lower surfaces of the outer ends of the cantilevers 2-3 through bolts, and the outer end of the cantilever 2-3 is preferably also provided with a through hole corresponding to the through hole of the sensor protective sleeve 2-7.

As shown in fig. 6, a cantilever 3-3 is fixed on a Y-axis driving module (not marked in fig. 6, and can be a small cylinder or a pneumatic sliding table installed at the upper end of a Z-axis driving module 3-2) in a lower module 3, a vertical bracket 3-4 is arranged at the outer end of the cantilever 3-3, an inner side sensor 3-5 is installed at the top end of the bracket 3-4, a sensor protective sleeve 3-7 is installed at the outer end of the cantilever 3-3, which is opposite to the inner side sensor 3-5, and the sensor protective sleeve 7-7 can reduce the influence of pollution to the sensor during welding.

The sensor protective sleeves 3-7 are provided with through holes which are wide at the top and narrow at the bottom, and the sensing light path of the inner side sensor 3-5 passes through the through holes of the sensor protective sleeves 3-7 to sense the lugs at the lower part. The sensor protective sleeve 3-7 is arranged on the lower surface of the outer end of the cantilever 3-3 through a bolt, and the outer end of the cantilever 3-3 is preferably also provided with a through hole corresponding to the through hole of the sensor protective sleeve 3-7.

In the middle module 2 and the lower module 3, the outside sensors 2-5 and the inside sensors 3-5 are located at the same height and on the same line along the Y-axis direction. The difference is that the outer end of the cantilever 2-3 is additionally provided with an L-shaped corner, the outer end of the cantilever 3-3 is also a straight strip, and the cantilever 2-3 semi-surrounds the cantilever 3-3, so that the outer side sensor 2-5 and the inner side sensor 3-5 are positioned on the same straight line.

As shown in fig. 1, two positioning blocks 4-2 are arranged in the conveying roller way 4 to limit the position of the battery module to be welded with the tab, and the positioning blocks 4-2 are driven by an air cylinder 4-1 to lift. When the battery module reaches the position of the positioning block 4-2, the positioning block 4-2 is lifted (from the gap of the roller way) to block the battery module from moving, at the moment, the welding head 1-2 starts to weld the lug and the bus bar, and the positioning block 4-2 is lowered to release the battery module after welding is completed.

Example 2

In the present embodiment, unlike embodiment 1, the welding heads 1-2 may be configured to automatically rotate around the Y-axis, for example, by being driven by a stepping motor to automatically adjust the orientation. The design can further improve the automation and the intellectualization of the equipment.

The other structures are the same as those in embodiment 1, and the description thereof will not be repeated.

Example 3

As shown in fig. 8, 9 and 10, one embodiment of the angle adjusting device is shown, in which the angle adjusting device 1-6 includes a fixing bracket 1-6-1, and is mounted on a Z-axis driving module 1-4 in an upper module through the fixing bracket 1-6-1 (one side of the fixing bracket 1-6-1 is provided with a protruding fixing block, the fixing block is provided with a mounting hole and is mounted and fixed on a mounting seat 1-7 through a bolt), a rotating shaft 1-6-3 is mounted on the fixing bracket 1-6-1, a welding head mounting plate 1-6-2 is mounted at the outer end of the rotating shaft 1-6-3, a welding head 1-2 is mounted on the welding head mounting plate 1-6-2 and can rotate around the rotating shaft 1-6-3, and the fixing bracket 1-6-1 and the welding head mounting plate 1-6-2 are connected with each other An adjusting and limiting device is arranged.

In this embodiment, the adjusting and limiting device may adopt the following structural design: comprises a lower limiting block 1-6-5 and an upper limiting block 1-6-8, wherein the lower limiting block 1-6-5 is fixed on a fixed support 1-6-1, the upper limiting block 1-6-8 is fixed on a welding head mounting plate 1-6-2, a bolt 1-6-4 is connected between the lower limiting block 1-6-5 and the upper limiting block 1-6-8, a nut 1-6-7 is installed at the upper end of the bolt 1-6-4, a limiting column is fixed on the nut 1-6-7, a limiting hole is arranged on the upper limiting block 1-6-8, the limiting column is inserted in the limiting hole, when the welding head mounting plate 1-6-2 is rotated, the nut 1-6-7 drives the bolt 1-6-4 to move up and down. When the welding head mounting plate 1-6-2 is rotated, the orientation of the bolt 1-6-4 is always unchanged.

A gap is reserved between the lower limiting block 1-6-5 and the welding head mounting plate 1-6-2, and a gap is reserved between the upper limiting block 1-6-8 and the fixed bracket 1-6-1, so that the rotation of the welding head mounting plate 1-6-2 relative to the fixed bracket 1-6-1 is not influenced.

The limiting holes in the upper limiting blocks 1-6-8 need to be designed into long holes, so that the limiting holes can slide relative to the limiting columns on the nuts 1-6-7.

And the lower limiting block 1-6-5 is provided with a clamping block 1-6-6, the lower end of the bolt 1-6-4 is clamped and fixed by the clamping block 1-6-6, the clamping block 1-6-6 is loosened when the welding head mounting plate 1-6-2 is rotated, and the clamping block 1-6-6 is screwed when the rotation is stopped. The lower end of the bolt 1-6-4 needs to be designed into a structure with anti-skid convex lines on the surface, so that the lower end of the bolt 1-6-4 can be effectively prevented from loosening when the clamping block 1-6-6 clamps and fixes the lower end of the bolt 1-6-4.

In order to facilitate the observation of the adjustment angle, as shown in fig. 10, a scale plate 1-6-9 may be provided on the fixed bracket 1-6-1, a pointer may be provided on the welding head mounting plate 1-6-2, and the pointer may indicate different scales on the scale plate 1-6-9 when the welding head mounting plate 1-6-2 rotates relative to the fixed bracket 1-6-1.

Example 4

In this embodiment, unlike embodiment 3, the adjustment limiting means in the angle adjusting means is in a simpler form, and for example, two threaded holes may be provided in the fixing bracket 1-6-1, into which a bolt (jackscrew) is inserted, and the outer end of the bolt abuts against the welding head mounting plate 1-6-2. And loosening the bolts when the welding head mounting plate 1-6-2 is adjusted in a rotating mode, and tightening the bolts after the welding head mounting plate is adjusted in place, so that the adjustment and the limiting can be realized.

The other structures are the same as in embodiment 1, and a description thereof will not be repeated.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. An angle adjusting device is characterized by comprising a fixed support, wherein a rotating shaft is installed on the fixed support, a welding head mounting plate is installed at the outer end of the rotating shaft, an adjusted welding head is installed on the welding head mounting plate and can rotate around the rotating shaft, an adjusting limiting device is connected between the fixed support and the welding head mounting plate and comprises a lower limiting block and an upper limiting block, the lower limiting block is fixed on the fixed support, the upper limiting block is fixed on the welding head mounting plate, a gap is reserved between the lower limiting block and the welding head mounting plate, a gap is reserved between the upper limiting block and the fixed support, a bolt is connected between the lower limiting block and the upper limiting block, a nut is installed at the upper end of the bolt, a limiting column is fixed on the nut, a limiting hole is formed in the upper limiting block, and the limiting column is inserted into the limiting hole, when the welding head mounting plate is rotated, the nut drives the bolt to move up and down; and the lower limiting block is provided with a clamping block, the clamping block clamps and fixes the lower end of the bolt, the clamping block is loosened when the welding head mounting plate is rotated, and the clamping block is screwed when the rotation is stopped.

2. The angle adjusting apparatus according to claim 1, wherein a lower end surface of the bolt is provided with an anti-slip ridge; the limiting hole in the upper limiting block is a long hole.

3. The angle adjusting device of claim 1, wherein the adjusting and limiting device comprises a plurality of threaded holes formed in the fixing bracket, bolts are arranged in the threaded holes, the outer ends of the bolts abut against the welding head mounting plate, the bolts are loosened when the welding head mounting plate is rotated, and the bolts are tightened after being adjusted in place.

4. The angle adjusting device of claim 1, wherein the fixing bracket is provided with a scale plate, and the mounting plate is provided with a pointer; a protruding fixing block is arranged on one side of the fixing support, and a mounting hole is formed in the fixing block.