CN220658946U

CN220658946U - Lug bending device and automatic welding equipment

Info

Publication number: CN220658946U
Application number: CN202322170160.8U
Authority: CN
Inventors: 冯亚; 谢小虎; 钟春仁
Original assignee: Soudian Technology Huizhou Co ltd
Current assignee: Soudian Technology Huizhou Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-03-26
Anticipated expiration: 2033-08-11

Abstract

The application discloses tab bending device and automatic welding equipment relates to battery manufacturing technical field. The lug bending device comprises a mounting seat, and a jig, a shaping module, a bending mechanism and a shaping mechanism which are arranged on the mounting seat, wherein the jig is used for placing a battery cell, so that the lug of the battery cell corresponds to the shaping module, and the bending mechanism and the shaping mechanism are respectively matched with the shaping module so as to bend and shape the lug. The lug bending device can promote the consistency and the accuracy of lug bending, and guarantees subsequent welding effect.

Description

Lug bending device and automatic welding equipment

Technical Field

The application relates to the technical field of battery manufacturing, in particular to a tab bending device and automatic welding equipment.

Background

In the processing process of the battery cell, the lug of the battery cell needs to be bent, and the bent lug is generally realized in the following two ways: one is to bend manually, and the other is to bend in a mode of matching manual and auxiliary tools.

Due to the difference of manual bending, the bending degree of the tab is inconsistent, and the consistency and the accuracy are affected. If the positions of the lugs are not opposite, when the laser welding is performed, the upper cover is not good in contact with the battery shell because the lugs are not bent enough, and in the working process of the laser welding machine, the upper cover of the battery is tilted so as to cause laser to strike on the lugs or the pole groups to cause burning of the lugs or the pole groups, so that the battery core is scrapped.

Disclosure of Invention

An object of the application is to provide a tab bending device and automatic weld equipment, can promote the uniformity and the rate of accuracy that the tab was bent, guarantee subsequent welding effect.

Embodiments of the present application are implemented as follows:

in one aspect of the embodiment of the application, a tab bending device is provided, including the mount pad, and set up tool, plastic module, bending mechanism and shaping mechanism on the mount pad, wherein, the tool is used for placing the electric core, so that the tab of electric core with the plastic module corresponds, bending mechanism with shaping mechanism respectively with the plastic module cooperates, so that the tab is bent and shaped.

Optionally, the shaping module comprises a mounting plate connected with the mounting seat and a positioning block arranged on the mounting plate, wherein the positioning block is positioned on one side of the jig, so that the positioning block can correspond to the tab.

Optionally, the bending mechanism is including setting up the grudging post on the mount pad, and set up the first linear drive spare on the grudging post, be connected with the support frame on the first linear drive spare, be provided with on the support frame with the pressure head that the locating piece corresponds.

Optionally, the positioning block is provided with a bar-shaped protrusion, the pressure head is provided with a bar-shaped groove corresponding to the bar-shaped protrusion, and when the pressure head is pressed down, the bar-shaped groove and the bar-shaped protrusion can be clamped.

Optionally, the jig comprises a bearing plate arranged on the mounting seat and a limiting block arranged on the bearing plate; the support frame is provided with a limit post, and when the pressure head is pressed down, the limit post can prop against the limit block.

Optionally, the bending mechanism further comprises a guide post arranged on the mounting seat, and the support frame is in sliding connection with the guide post through a linear bearing.

Optionally, the shaping mechanism includes the setting head that sets up the second linear drive spare on the mount pad, and with second linear drive spare is connected, the setting head can with the up end cooperation of locating piece.

Optionally, the tab bending device further includes an internal resistance tester, and the internal resistance tester is electrically connected with the positioning block or the pressure head.

Optionally, the supporting frame is provided with a conductive column connected with the pressure head, or the positioning block is provided with a conductive column.

In another aspect of the embodiments of the present application, an automatic welding apparatus is provided, including a workbench, and a welding assembly disposed on the workbench and the tab bending device according to any one of the above, where the welding assembly is used for welding the tab after bending.

The beneficial effects of the embodiment of the application include:

the embodiment of the application provides a tab bending device and automatic weld equipment through tool and the plastic module of setting on the mount pad to place the battery cell in the tool, thereby fix a position the battery cell. Meanwhile, the lug of the battery cell extends out of the jig and corresponds to the shaping module. After the battery cell is placed in place, the tab bending device is started to enable the bending mechanism to act, and the tab is subjected to preliminary bending molding under the matching action of the shaping module. And then, the shaping mechanism acts and forms a matching relation with the shaping module so as to carry out shaping and shaping operation on the tab. The shaping operation in the bending process can be realized by pressure maintaining, so that the purpose of required bending and forming is achieved. By adopting the mode, the consistency and accuracy of bending the tab can be improved, and the subsequent welding effect is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a tab bending device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of the fixture, the shaping module and the shaping mechanism according to the embodiment of the present application;

fig. 3 is a schematic structural diagram of a bending mechanism according to an embodiment of the present application;

fig. 4 is a second schematic structural diagram of a tab bending device according to an embodiment of the present application.

Icon: 100-electrode lug bending device; 110-a mounting base; 120-jig; 122-carrier plate; 124-limiting blocks; 130-shaping module; 132-mounting plate; 134-positioning blocks; 136-bar-shaped protrusions; 140-a bending mechanism; 142-a stand; 144-first linear drive; 146-supporting frame; 147-guide posts; 1472-linear bearings; 148-indenter; 1482-slot; 149-limit column; 150-a shaping mechanism; 152-a second linear drive; 154-shaping head.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Due to the difference of manual bending, the bending degree of the tab is inconsistent, and the consistency and the accuracy are affected. If the positions of the lugs are not opposite, when the laser welding is performed, the upper cover is not good in contact with the battery shell because the lugs are not bent enough, and in the working process of the laser welding machine, the upper cover of the battery is tilted so as to cause laser to strike on the lugs or the pole groups to cause burning of the lugs or the pole groups, so that the battery core is scrapped. In view of the foregoing, embodiments of the present application provide the following solutions to overcome the foregoing problems.

Referring to fig. 1, the present embodiment provides a tab bending device 100, which includes a mounting base 110, and a fixture 120, a shaping module 130, a bending mechanism 140 and a shaping mechanism 150 disposed on the mounting base 110, wherein the fixture 120 is used for placing a battery core, so that the tab of the battery core corresponds to the shaping module 130, and the bending mechanism 140 and the shaping mechanism 150 are respectively matched with the shaping module 130 to bend and shape the tab.

Specifically, when the tab is bent, the battery cell to be treated is taken out first, and whether the battery cell has the defects of bulge, breakage, leakage, printing, tab deformation or the like is checked, so that the qualified battery cell is placed in the jig 120, and the subsequent bending operation of the tab is facilitated. After the battery cell is placed into the jig 120 in a correct posture, the jig 120 can play a limiting role on the battery cell, and meanwhile, the tab of the battery cell extends to the shaping module 130. After the bending mechanism 140 and the shaping module 130 cooperate to perform preliminary bending on the tab, the shaping mechanism 150 cooperates with the shaping module 130 again to ensure the bending effect and shape the bent tab so as to facilitate the subsequent welding process.

The tab bending device 100 provided in the embodiment of the application is configured to position the battery cell by placing the battery cell in the jig 120 through the jig 120 and the shaping module 130 arranged on the mounting seat 110. Meanwhile, the tab of the battery cell extends out of the jig 120 and corresponds to the shaping module 130. After the battery cell is placed in place, the tab bending device 100 is started to enable the bending mechanism 140 to act, and the tab is primarily bent and formed under the cooperation of the shaping module 130. Thereafter, the shaping mechanism 150 acts and forms a mating relationship with the shaping module 130 to shape and shape the tab. The shaping operation in the bending process can be realized by pressure maintaining, so that the purpose of required bending and forming is achieved. By adopting the mode, the consistency and accuracy of bending the tab can be improved, and the subsequent welding effect is ensured.

As shown in fig. 1 and 2, the shaping module 130 includes a mounting plate 132 connected to the mounting base 110, and a positioning block 134 disposed on the mounting plate 132, where the positioning block 134 is located on one side of the jig 120, so that the positioning block 134 can correspond to the tab.

Specifically, the mounting plate 132 connected to the mounting base 110 facilitates the mounting of the mounting block, and the height of the mounting block is adapted to the height of the jig 120, so as to ensure the convenience of the cooperation of the tab and the positioning block 134. Thus, the bending of the tab can be assisted by the positioning block 134.

As shown in fig. 1, 2 and 3, the bending mechanism 140 includes a stand 142 disposed on the mounting base 110, and a first linear driving member 144 disposed on the stand 142, where the first linear driving member 144 is connected to a support frame 146, and a pressure head 148 corresponding to the positioning block 134 is disposed on the support frame 146.

Specifically, the installation of the first linear driving member 144 is facilitated by the stand 142 disposed on the mounting base 110, where the first linear driving member 144 may be a hydraulic cylinder, a pneumatic cylinder or a linear motor, so as to drive the support frame 146 connected to the first linear driving member 144 to move linearly, and when the support frame 146 moves linearly, the pressure head 148 can be driven to move synchronously along with the support frame 146, so that the pressure head 148 approaches or approaches the positioning block 134. It can be appreciated that the process of bending the tab is performed during the process of the ram 148 approaching the positioning block 134.

As shown in fig. 2 and 3, the positioning block 134 is provided with a bar-shaped protrusion 136, the ram 148 is provided with a bar-shaped groove 1482 corresponding to the bar-shaped protrusion 136, and when the ram 148 is pressed down, the bar-shaped groove 1482 and the bar-shaped protrusion 136 can be engaged.

Specifically, by mating the bar-shaped protrusions 136 and the bar-shaped grooves 1482, the bar-shaped grooves 1482 and the bar-shaped protrusions 136 can be engaged during the mating of the ram 148 and the positioning block 134. At this time, the tab on the positioning block 134 is bent in a specific shape under the combined action of the pressure head 148 and the positioning block 134. It can be appreciated that in order to ensure the bending effect of the tab, the tab is prevented from being clamped in the bar-shaped groove 1482, and the width of the bar-shaped groove 1482 needs to be larger than the width of the bar-shaped protrusion 136, so as to ensure the stability during bending.

With continued reference to fig. 2 and 3, the jig 120 includes a carrier plate 122 disposed on the mounting base 110, and a limiting block 124 disposed on the carrier plate 122; the support frame 146 is provided with a limit post 149, and when the pressure head 148 is pressed down, the limit post 149 can prop against the limit block 124.

Specifically, the carrier plate 122 disposed on the mounting base 110 is used to support the battery cells. Meanwhile, the limiting block 124 arranged on the bearing plate 122 is used for limiting the battery cell, so that the support and limitation of the jig 120 on the battery cell are ensured. In addition, through the spacing post 149 that sets up on support frame 146, support frame 146 pushes down the in-process, and spacing post 149 can support with stopper 124 for support frame 146 only can push down specific height, so, can avoid extrudeing between pressure head 148 and the locating piece 134 and lead to the utmost point ear to be damaged, is favorable to promoting the stability of bending to the utmost point ear.

As shown in fig. 3 and 4, the bending mechanism 140 further includes a guide column 147 disposed on the mounting seat 110, and the support frame 146 is slidably connected to the guide column 147 through a linear bearing 1472.

Specifically, in the process of pressing down the support frame 146, in order to ensure the stability of the support frame 146 during movement, the guide posts 147 are provided, so that the support frame 146 can only move along the extending direction of the guide posts 147, thereby achieving the purpose of linear movement of the support frame 146 and ensuring the alignment precision between the pressure head 148 and the positioning block 134.

As shown in fig. 2, the shaping mechanism 150 includes a second linear driving member 152 disposed on the mounting base 110, and a shaping head 154 connected to the second linear driving member 152, where the shaping head 154 can be matched with an upper end surface of the positioning block 134.

Specifically, after the tab is bent by the cooperation of the positioning block 134 and the ram 148, the cantilever end of the tab abuts against the upper end surface of the positioning block 134. At this time, the second linear driving member 152 drives the shaping head 154 to push to the positioning block 134, so as to smooth the tab, so as to ensure the reliability of bending and shaping the tab, and ensure the required bending degree of the tab, so that the subsequent welding process has better fitting degree. It is understood that the first linear driving member 144 may be a hydraulic cylinder, a pneumatic cylinder, a linear motor, or the like, so long as the stable pushing of the shaping head 154 can be ensured, which is not particularly limited in the embodiment of the present application.

In an alternative embodiment of the present application, tab bending device 100 further includes an internal resistance tester electrically connected to positioning block 134 or ram 148.

In this way, when the tabs are bent and shaped, in the pressure-maintaining and shaping stage, the positioning block 134 or the pressure head 148 can be respectively electrically connected with two tabs of the battery cell, so that the battery cell is connected to the internal resistance tester to test the voltage and the internal resistance of the battery cell. For example, the internal resistance tester can be integrated in the mounting seat 110, an indicator lamp is arranged on the internal resistance tester, the indicator lamp can be displayed through the mounting seat 110, and when in use, the voltage of the internal resistance tester can be set to be 3.7 v-3.77 v; the internal resistance value is within the range of 10mΩ -40 mΩ, and the tester judges that the good product lights the green light in the range, so as to achieve the purpose of completing measurement while the battery cell is bent at the tab. The internal resistance tester and the mounting seat 110 can be arranged in a split mode according to actual needs, and the internal resistance tester is only required to be electrically connected with the positioning block 134 or the pressure head 148 when in use, so that the applicability of the internal resistance tester is improved.

In an alternative embodiment of the present application, the support bracket 146 is provided with conductive posts that are connected to the ram 148, or the positioning block 134 is provided with conductive posts.

Thus, when the ram 148 or the positioning block 134 is wired to ensure a desired electrical connection, the conductive posts may be wired to ensure ease of operation.

The embodiment of the application also discloses automatic welding equipment, which comprises a workbench, and a welding assembly arranged on the workbench and the tab bending device 100 in the previous embodiment, wherein the welding assembly is used for welding the bent tab. In practical application, after the tab is bent, the battery cell can be directly transferred to the welding assembly by means of the manipulator for subsequent welding operation. The automatic welding apparatus includes the same structure and advantageous effects as the tab bending device 100 in the previous embodiment. The structure and the beneficial effects of the tab bending device 100 are described in detail in the foregoing embodiments, and are not described herein again.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a utmost point ear bending device, its characterized in that includes the mount pad, and set up tool, plastic module, bending mechanism and the shaping mechanism on the mount pad, wherein, the tool is used for placing the electric core, so that the utmost point ear of electric core with the shaping module corresponds, bending mechanism with the shaping mechanism respectively with the shaping module cooperation, so that the utmost point ear is bent the design.

2. The tab bending device of claim 1, wherein the shaping module comprises a mounting plate connected with the mounting base, and a positioning block arranged on the mounting plate, wherein the positioning block is positioned on one side of the jig, so that the positioning block can correspond to the tab.

3. The tab bending device of claim 2, wherein the bending mechanism comprises a stand arranged on the mounting base, and a first linear driving member arranged on the stand, wherein a supporting frame is connected to the first linear driving member, and a pressing head corresponding to the positioning block is arranged on the supporting frame.

4. The tab bending device of claim 3, wherein the positioning block is provided with a bar-shaped protrusion, the pressure head is provided with a bar-shaped groove corresponding to the bar-shaped protrusion, and the bar-shaped groove and the bar-shaped protrusion can be clamped when the pressure head is pressed down.

5. The tab bending device of claim 4, wherein the jig comprises a carrier plate disposed on the mounting base, and a stopper disposed on the carrier plate; the support frame is provided with a limit post, and when the pressure head is pressed down, the limit post can prop against the limit block.

6. The tab bending device of any one of claims 3-5, wherein the bending mechanism further comprises a guide post disposed on the mounting base, and the support frame is slidably connected to the guide post through a linear bearing.

7. The tab bending device of any one of claims 2-5, wherein the shaping mechanism comprises a second linear driving member disposed on the mounting base, and a shaping head connected to the second linear driving member, the shaping head being capable of being matched with an upper end face of the positioning block.

8. The tab bending device of any one of claims 3-5, further comprising an internal resistance tester electrically connected to the locating block or the ram.

9. The tab bending device of claim 8, wherein the support frame is provided with a conductive post connected to the pressure head, or the positioning block is provided with a conductive post.

10. An automatic welding device, comprising a workbench, a welding assembly arranged on the workbench and the tab bending device of any one of claims 1-9, wherein the welding assembly is used for welding the bent tab.