CN219379527U

CN219379527U - Cylindrical battery tab welding device

Info

Publication number: CN219379527U
Application number: CN202320184406.4U
Authority: CN
Inventors: 陈昌
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-07-21
Anticipated expiration: 2033-02-03

Abstract

The utility model provides a cylindrical battery tab welding device, and belongs to the technical field of new energy battery production equipment. The welding device comprises a mounting seat and a cover plate. The mount pad includes bottom plate and positioning seat, and the positioning seat protrusion sets up on one side face of bottom plate, is provided with on the upper surface of positioning seat to be used for with cylinder battery assorted centre bore groove, still the protrusion is provided with the location boss on the upper surface of positioning seat, and the location boss has the circular arc locating surface of being connected with the lateral wall in centre bore groove, and the top terminal surface of location boss is provided with the bar constant head tank, bar constant head tank and circular arc locating surface intercommunication. The cover plate cover is arranged on the top end face of the positioning boss, and a welding through hole is formed in the cover plate. The welding device can solve the problem of low welding accuracy in welding the battery pole and the tabs, improves the welding efficiency and reduces potential safety hazards.

Description

Cylindrical battery tab welding device

Technical Field

The utility model relates to the technical field of new energy battery production equipment, in particular to a cylindrical battery tab welding device.

Background

The lithium ion battery has high capacity, long cycle life and wide use environment temperature. The solar energy lamp is widely applied to solar lamps, lawn lamps, backup energy sources, electric tools, toy models, two-wheel vehicles and photovoltaic energy sources. In order to verify the performance of the battery, before a batch of lithium ion batteries is produced and shipped, a spot check is often required for individual samples of the batch.

In the related art, when performing a battery performance sampling test, a worker is usually required to weld metal tabs for connecting a testing device on positive and negative electrode posts of a battery, and conduct the test device with the led metal tabs to test the performance of the battery. The common fixing method is that after the cylindrical battery is fixed, the tab is pre-adhered on the post of the cylindrical battery through an adhesive tape, and then the welding of the pre-post of the tab is performed.

The bonding method of the bonding sheet in the related art is adopted, a large amount of heat can be generated in the bonding process to melt the adhesive tape, so that the adhesive tape can not completely fix the bonding sheet in the bonding process, the problems of cold joint and off-welding occur, the connection with test equipment is inconvenient, and the overall production efficiency is affected. Meanwhile, as the battery product is electrified, if the anode and cathode tabs which are not welded in place are inclined and short-circuited, potential safety hazards can be caused by short circuits in the process of moving the staff and docking with the testing equipment.

Disclosure of Invention

The embodiment of the utility model provides a cylindrical battery tab welding device, which can solve the problem of low welding accuracy in the process of welding a battery pole and a tab, improve welding efficiency and reduce potential safety hazards. The technical scheme is as follows:

the embodiment of the utility model provides a cylindrical battery tab welding device, which comprises: a mounting seat and a cover plate,

the mounting seat comprises a bottom plate and a positioning seat, the positioning seat is arranged on one side plate surface of the bottom plate in a protruding mode, a central hole groove matched with the cylindrical battery is formed in the upper surface of the positioning seat, a positioning boss is further arranged on the upper surface of the positioning seat in a protruding mode, the positioning boss is provided with an arc positioning surface connected with the side wall of the central hole groove, a bar positioning groove is formed in the top end face of the positioning boss, and the bar positioning groove is communicated with the arc positioning surface;

the cover plate is detachably covered on the top end face of the positioning boss, and a welding through hole is formed in the cover plate.

Optionally, the tab locating groove includes a first tab locating groove and a second tab locating groove, the first tab locating groove and the second tab locating groove are circumferentially spaced around the central hole groove, and the depth of the first tab locating groove is smaller than the depth of the second tab locating groove.

Optionally, the welding through hole includes first welding through hole and second welding through hole, first welding through hole with first tab constant head tank assorted and be located the axis top in centre bore groove, the second welding through hole with second tab constant head tank assorted and be located first welding through hole side.

Optionally, a first compression boss and a second compression boss are convexly arranged on a side plate surface of the cover plate, the first compression boss surrounds the first welding through hole, the second compression boss surrounds the second welding through hole, and the height of the first compression boss is smaller than that of the second compression boss.

Optionally, a first magnetic component is arranged on the top end face of the positioning boss, and a second magnetic component matched with the first magnetic component is arranged on the cover plate.

Optionally, a first positioning pin hole is formed in the top end face of the positioning boss, and a second positioning pin hole matched with the first positioning pin hole is formed in the cover plate.

Optionally, an annular supporting block is arranged at the bottom of the central hole groove.

Optionally, the welding device for the cylindrical battery tabs further comprises a supporting component, the supporting component comprises a mounting base plate and two vertical plates, bolt mounting holes matched with the welding equipment base are formed in the mounting base plate, the two vertical plates are arranged at intervals in parallel, one end of each vertical plate is connected with the mounting base plate, and the base plate is detachably connected with the other ends of the two vertical plates.

Optionally, the vertical plate is provided with a lightening hole.

Optionally, the cover plate is a red copper cover plate.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

by adopting the cylindrical battery tab welding device provided by the embodiment of the utility model, the cylindrical battery can be pre-positioned through the central hole groove on the positioning seat, the tab can be supported and limited by the tab positioning groove on the positioning boss, so that the tab can be stably butted with the cylindrical battery, and finally the butted position can be stably welded by the welding through hole on the cover plate, so that the problem of low welding accuracy in the welding of the battery post and the tab can be solved, the welding efficiency is improved, and the potential safety hazard is reduced.

Drawings

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

Fig. 1 is a schematic perspective view of a cylindrical battery tab welding device according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of the structure of FIG. 1;

fig. 3 is a schematic perspective view of a cylindrical battery tab welding device with a cover plate removed according to an embodiment of the present utility model;

FIG. 4 is a schematic top view of the cylindrical battery tab welding device of FIG. 3;

FIG. 5 is a schematic top view of the structure of FIG. 3;

FIG. 6 is a schematic diagram of a side of a cover plate according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of another side of the cover plate according to the embodiment of the present utility model.

In the figure:

1-a mounting base; 2-cover plate; 3-a support assembly; 11-a bottom plate; 12-positioning seats; 13-positioning bosses; 21-welding through holes; 22-a first compression boss; 23-a second compression boss; 24-a second magnetic component; 25-second dowel holes; 31-mounting a backing plate; 32-vertical plates; 121-a central bore slot; 122-an annular support plate; 131-arc locating surfaces; 132-a bar positioning groove; 133-a first magnetic assembly; 134-first locating pin holes; 211-first welding through holes; 212-a second solder via; 311-bolt mounting holes; 321-lightening holes; 1321-a first tab detent; 1322-a second tab detent; an m-cylindrical battery; m 1-pole; n-bar; n 1-positive electrode tab; n 2-negative electrode tab.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of a cylindrical battery tab welding device according to an embodiment of the present utility model. Fig. 2 is a schematic top view of fig. 1. Fig. 3 is a schematic perspective view of a cylindrical battery tab welding device with a cover plate removed according to an embodiment of the present utility model. Fig. 4 is a schematic top view of the cylindrical battery tab welding device of fig. 3. Fig. 5 is a schematic top view of fig. 3. Fig. 6 is a schematic structural diagram of a side surface of a cover plate according to an embodiment of the present utility model. Fig. 7 is a schematic structural diagram of another side of the cover plate according to the embodiment of the present utility model. As shown in fig. 1 to 7, the present utility model provides a cylindrical battery tab welding device, which includes a mounting base 1 and a cover plate 2, by practice.

The mounting seat 1 comprises a bottom plate 11 and a positioning seat 12, the positioning seat 12 is arranged on one side plate surface of the bottom plate 11 in a protruding mode, and a central hole groove 121 matched with the cylindrical battery is formed in the upper surface of the positioning seat 12. The upper surface of the positioning seat 12 is also provided with a positioning boss 13 in a protruding mode, the positioning boss 13 is provided with an arc positioning surface 131 connected with the side wall of the central hole groove 121, the top end face of the positioning boss 13 is provided with a bar positioning groove 132, and the bar positioning groove 132 is communicated with the arc positioning surface 131.

The cover plate 2 is detachably covered on the top end face of the positioning boss 13, and a welding through hole 21 is formed in the cover plate 2.

In the embodiment of the present utility model, when the welding process of the tab and the cylindrical battery is required, the cover plate 2 may be removed from the positioning boss 13 to leak out of the central hole 121 on the positioning seat 12. The cylindrical battery m is then placed in the center hole groove 121 in an upward posture of the pole m1, and positioned by the positioning seat 12. Then, the tab n is correspondingly placed in the tab positioning groove 132, so that one end of the tab n is abutted against the pole m1 of the cylindrical battery m or the end face of the cylindrical battery m beside the pole m1, thereby completing the pre-positioning of the welding position. Opposite side walls of the tab positioning groove 132 can limit and fix the tab n in the horizontal direction, and the bottom of the tab positioning groove 132 can support the tab n, so as to ensure stable butt joint between the tab n and the cylindrical battery m. After the placement of the tab n is completed, the cover plate 2 can be covered on the top end face of the positioning boss 13 again, and at the moment, the welding through hole 21 is opposite to the butt joint position of the tab n and the cylindrical battery m, and the tab n and the cylindrical battery m can be stably welded through the welding through hole 21 by using a laser welding device. And finally, taking down the cover plate 2 again, and taking out the welded cylindrical battery m and the tab n, and putting the cylindrical battery m into the next cylindrical battery m for welding.

By adopting the cylindrical battery tab welding device provided by the embodiment of the utility model, the cylindrical battery can be preset through the central hole groove on the positioning seat 12, the tab n is supported and limited by the tab positioning groove 132 on the positioning boss 13, so that the tab n can be stably butted with the cylindrical battery m, and finally the butted position is stably welded by the welding through hole 21 on the cover plate 2, so that the problem of low welding accuracy in welding the battery post and the tab can be solved, the welding efficiency is improved, and the potential safety hazard is reduced.

Optionally, the tab positioning slots 132 include a first tab positioning slot 1321 and a second tab positioning slot 1322, the first tab positioning slot 1321 and the second tab positioning slot 1322 are circumferentially spaced around the central hole slot 121, and the depth of the first tab positioning slot 1321 is smaller than the depth of the second tab positioning slot 1322. Illustratively, in an embodiment of the present utility model, the positive electrode tab n1 may be placed in the first tab positioning groove 1321, and an end thereof extending into the middle of the center hole groove 121 may be docked with the top of the post m1 of the cylindrical battery m; and negative electrode tab n2 can be placed in second tab positioning groove 1322, because the depth of second tab positioning groove 1322 is greater for the depth of second tab positioning groove 1322, the whole height that negative electrode tab n2 stretches into the one end of centre bore groove 121 is less than positive electrode tab n1, can just in time dock with cylindrical cell m's top terminal surface. Through crisscross first tab constant head tank 1321 and the second tab constant head tank 1322 that set up, can realize setting up in the welding to anodal tab n1 and negative pole tab n2 simultaneously by cylindrical cell m's top, improved cylindrical cell tab welding set's practicality.

Optionally, the welding through hole 21 includes a first welding through hole 211 and a second welding through hole 212, the first welding through hole 211 is matched with the first tab positioning groove 1321 and is located above the axis of the central hole groove 121, and the second welding through hole 212 is matched with the second tab positioning groove 1322 and is located beside the first welding through hole 211. Illustratively, in the embodiment of the present utility model, by providing the first welding through hole 211 and the second welding through hole 212 respectively matching with the first tab positioning groove 1321 and the second tab positioning groove 1322, the butt joint portion of the positive electrode tab n1 and the electrode post m1 can be correspondingly welded through the first welding through hole 211, and the butt joint portion of the negative electrode tab n2 and the top of the cylindrical battery m can be correspondingly welded through the second welding through hole 212, so that the welding accuracy is further improved.

Optionally, a first pressing boss 22 and a second pressing boss 23 are convexly arranged on a side plate surface of the cover plate 2, the first pressing boss 22 is arranged around the first welding through hole 211, the second pressing boss 23 is arranged around the second welding through hole 212, and the height of the first pressing boss 22 is smaller than that of the second pressing boss 23. Illustratively, in the embodiment of the present utility model, after the positive electrode tab n1 and the negative electrode tab n2 are respectively disposed and the cover plate 2 is covered on the top end surface of the positioning boss 13, the first pressing boss 22 and the second pressing boss 23 respectively press and position the positive electrode tab n1 and the negative electrode tab n2 from above, so as to avoid relative shaking during welding, and further improve welding accuracy.

Optionally, a first magnetic component 133 is disposed on the top end surface of the positioning boss 13, and a second magnetic component 24 matched with the first magnetic component 133 is disposed on the cover plate 2. In the embodiment of the present utility model, after the cover plate 2 is covered on the top end surface of the positioning boss 13, the cover plate can be magnetically attracted and fixed by the second magnetic attraction component 24 and the first magnetic attraction component 133, for example, a ru-fe-b magnet, so that the cover plate is ensured to be stably covered, and the assembly stability of the cylindrical battery tab welding device is improved.

Optionally, a first positioning pin hole 134 is provided on the top end surface of the positioning boss 13, and a second positioning pin hole 25 matched with the first positioning pin hole 134 is provided on the cover plate 2. Illustratively, in the embodiment of the present utility model, after the cover plate 2 is covered on the top end surface of the positioning boss 13, the second positioning pin hole 25 may be aligned with the first positioning pin hole 134, and further fixedly connected by a bolt or a positioning pin, so that the assembly stability of the cylindrical battery tab welding device is further improved.

Alternatively, the bottom of the center hole groove 121 is provided with an annular support block 122. Illustratively, in the embodiment of the present utility model, the annular supporting blocks 122 with corresponding heights are disposed at the bottom of the central hole groove 121, so as to reduce the contact area between the cylindrical battery m and the bottom of the groove, and avoid scratch damage. Simultaneously, the top end face of the cylindrical battery m is enabled to be flush with the bottom of the second tab positioning groove 1322, so that the top end face of the pole m1 is enabled to be flush with the bottom of the first tab positioning groove 1321, and assembly accuracy is further guaranteed.

Optionally, the cylindrical battery tab welding device further comprises a supporting component 3, the supporting component 3 comprises a mounting base plate 31 and two vertical plates 32, bolt mounting holes 311 matched with the welding equipment base are formed in the mounting base plate 31, the two vertical plates 32 are arranged at intervals in parallel, one end of each vertical plate is connected with the mounting base plate 31, and the bottom plate 11 is detachably connected with the other ends of the two vertical plates 32. Illustratively, in the embodiment of the utility model, the whole welding device is connected with the base of the laser welding equipment through the mounting base plate 31 by bolts, meanwhile, the mounting base 1 is connected with the mounting base plate 31 by the vertical plate 32, and the mounting base 1 is lifted up to meet the distance requirement of the welding position of the product and the welding head in the laser welding equipment.

Optionally, the riser 32 is provided with a lightening hole 321. Illustratively, in the embodiment of the present utility model, the weight-reducing holes 321 are formed in the vertical plates to reduce the overall load of the support assembly 3 while reducing the production cost.

Optionally, the cover plate 2 is a red copper cover. Illustratively, in the embodiment of the utility model, the cover plate 2 made of red copper is adopted, so that the heat conduction performance is strong, and the heat dissipation capacity of the welding device in the welding process can be effectively improved.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of one of the components. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model, but rather, the utility model is to be construed as limited to the appended claims.

Claims

1. A cylindrical battery tab welding device, comprising: a mounting seat (1) and a cover plate (2),

the mounting seat (1) comprises a bottom plate (11) and a positioning seat (12), the positioning seat (12) is arranged on one side plate surface of the bottom plate (11) in a protruding mode, a central hole groove (121) used for being matched with a cylindrical battery is formed in the upper surface of the positioning seat (12), a positioning boss (13) is further arranged on the upper surface of the positioning seat (12) in a protruding mode, the positioning boss (13) is provided with an arc positioning surface (131) connected with the side wall of the central hole groove (121), a bar positioning groove (132) is formed in the top end face of the positioning boss (13), and the bar positioning groove (132) is communicated with the arc positioning surface (131);

the cover plate (2) is detachably covered on the top end face of the positioning boss (13), and a welding through hole (21) is formed in the cover plate (2).

2. The cylindrical battery tab welding device of claim 1, wherein the tab locating groove (132) comprises a first tab locating groove (1321) and a second tab locating groove (1322), the first tab locating groove (1321) and the second tab locating groove (1322) are circumferentially spaced around the central bore groove (121), and a depth of the first tab locating groove (1321) is less than a depth of the second tab locating groove (1322).

3. The cylindrical battery tab welding device according to claim 2, wherein the welding through hole (21) comprises a first welding through hole (211) and a second welding through hole (212), the first welding through hole (211) is matched with the first tab positioning groove (1321) and is located above the axis of the central hole groove (121), and the second welding through hole (212) is matched with the second tab positioning groove (1322) and is located beside the first welding through hole (211).

4. A cylindrical battery tab welding device according to claim 3, characterized in that a first compression boss (22) and a second compression boss (23) are arranged on a side plate surface of the cover plate (2) in a protruding manner, the first compression boss (22) is arranged around the first welding through hole (211), the second compression boss (23) is arranged around the second welding through hole (212), and the height of the first compression boss (22) is smaller than that of the second compression boss (23).

5. The cylindrical battery tab welding device according to claim 1, wherein a first magnetic component (133) is disposed on a top end surface of the positioning boss (13), and a second magnetic component (24) matched with the first magnetic component (133) is disposed on the cover plate (2).

6. The cylindrical battery tab welding device according to claim 5, wherein a first positioning pin hole (134) is provided on a top end surface of the positioning boss (13), and a second positioning pin hole (25) matched with the first positioning pin hole (134) is provided on the cover plate (2).

7. The cylindrical battery tab welding device according to any one of claims 1 to 6, wherein the bottom of the center hole groove (121) is provided with an annular support block (122).

8. The cylindrical battery tab welding device according to any one of claims 1 to 6, further comprising a support assembly (3), wherein the support assembly (3) comprises a mounting pad (31) and two vertical plates (32), bolt mounting holes (311) for matching with a welding equipment base are formed in the mounting pad (31), the two vertical plates (32) are arranged in parallel at intervals, one end of each vertical plate is connected with the mounting pad (31), and the bottom plate (11) is detachably connected with the other ends of the two vertical plates (32).

9. The cylindrical battery tab welding device according to claim 8, wherein the upright plate (32) is provided with a lightening hole (321).

10. The cylindrical battery tab welding device according to any one of claims 1 to 6, wherein the cover plate (2) is a red copper cover plate.