CN219402849U

CN219402849U - Busbar welding frock

Info

Publication number: CN219402849U
Application number: CN202223222698.0U
Authority: CN
Inventors: 彭熊; 王娜; 孙宏; 吴惠; 邹添昱
Original assignee: China Electronic New Energy Wuhan Research Institute Co ltd
Current assignee: China Electronic New Energy Wuhan Research Institute Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-25
Anticipated expiration: 2032-12-02

Abstract

The utility model provides a busbar welding tool which is used for compressing a busbar and a nickel sheet, and comprises a base, a positioning pile and a magnet, wherein the positioning pile is arranged on the base and used for positioning the busbar and the nickel sheet; the magnet suit is on the spud pile to selectively compress tightly busbar and nickel piece, still include the sheetmetal, the sheetmetal sets up on the base, is in same perpendicular line with the magnet, is used for compressing tightly busbar and nickel piece with the magnet cooperation. Through setting up base, spud and magnet, overlaps busbar and nickel piece in proper order, behind the spud, rethread magnet compresses tightly busbar and nickel piece on the base to carry out spacingly to busbar and nickel piece before compressing tightly through the spud, and then avoid busbar and nickel piece to compress tightly the removal before, welding stability is high, can improve welded precision; through setting up spud and magnet, can be with busbar and nickel piece quick cover in proper order, spud to compress tightly through magnet, thereby can accomplish fast and compress tightly the operation.

Description

Busbar welding frock

Technical Field

The utility model relates to the technical field of busbar welding, in particular to a busbar welding tool.

Background

Along with the continuous progress of informatization and intellectualization, lithium batteries are used as energy source equipment, the lithium batteries are used more and more widely, various lithium battery manufacturers design various different lithium batteries based on different concepts, in order to achieve different performance indexes, the lithium batteries can be combined in various serial-parallel connection modes, and a bus bar plays an important role as a connecting piece for serial-parallel connection of the lithium batteries, however, an output electrode of a lithium battery core is generally an anode aluminum electrode and a cathode copper electrode, electrochemical corrosion can be generated due to contact of the copper bus bar and the aluminum electrode, and therefore welding tools are required to be used for welding the bus bar and a nickel sheet.

The Chinese patent with publication number of CN203125023U discloses a welding device for nickel bars and bus bars in a lithium ion battery pack, and the welding device is found in the practical use process that the nickel bars and the bus bars can be tightly attracted on a device base by installing a plurality of magnets, so that the dependence on the flatness of a cover plate can be eliminated, and the problem of poor welding caused by incapability of effectively compacting the nickel bars and the bus bars due to the heated deformation of the cover plate is effectively solved.

The inventor finds that the root cause is that the nickel bar and the bus bar are easy to deviate in the process of compacting the nickel bar and the bus bar, and the position of the laser welding is set in advance in the process of laser welding, so that the problem of deviation in welding can occur, the welding precision is low, unqualified products are easy to occur, and in order to solve the technical problem, the utility model is necessary to provide a bus bar welding tool which is not easy to deviate.

Disclosure of Invention

In view of the above, the utility model provides a busbar welding tool, which can avoid the condition of deflection in the process of compacting nickel sheets and busbars, has high welding stability and can improve welding precision.

The technical scheme of the utility model is realized as follows: the utility model provides a busbar welding fixture for compacting a busbar and a nickel sheet, which comprises a base, a positioning pile and a magnet, wherein,

the positioning pile is arranged on the base and used for positioning the busbar and the nickel sheet;

the magnet is sleeved on the positioning pile and selectively compresses the busbar and the nickel sheet.

On the basis of the technical scheme, the metal sheet is preferably arranged on the base, is positioned on the same vertical line with the magnet and is used for being matched with the magnet to compress the busbar and the nickel sheet.

On the basis of the technical scheme, the screw is preferably arranged on the base, and the screw penetrates through the metal sheet and the base and is in threaded connection with the positioning pile and used for fixing the metal sheet and the positioning pile.

Still more preferably, the base is provided with a sinking groove for placing the busbar and the nickel plate.

On the basis of the technical scheme, preferably, the base is provided with the boss, the boss is positioned in the sinking groove, the screw penetrates through the boss, and the boss is propped against the busbar and the nickel sheet.

On the basis of the above technical solution, preferably, the boss includes a first contact ring and a second contact ring, wherein,

the first contact ring is fixed on the boss and is propped against the busbar;

the second contact ring is fixed on the first contact ring and abuts against the nickel sheet.

On the basis of the above technical solution, preferably, the diameter of the first contact ring is larger than the diameter of the second contact ring.

Still more preferably, the base is provided with a mounting groove, the metal sheet is located in the mounting groove, and the mounting groove is used for mounting the screw.

Compared with the prior art, the busbar welding tool has the following beneficial effects:

(1) Through setting up base, spud and magnet, overlaps busbar and nickel piece in proper order, behind the spud, rethread magnet compresses tightly busbar and nickel piece on the base to carry out spacingly to busbar and nickel piece before compressing tightly through the spud, and then avoid busbar and nickel piece to compress tightly the removal before, welding stability is high, can improve welded precision;

(2) Through setting up spud and magnet, can be with busbar and nickel piece cover fast in proper order on the spud to compress tightly through magnet, thereby can accomplish fast and compress tightly the operation.

(3) Through setting up the boss, can support with busbar and nickel piece respectively and hold to can be further spacing busbar and nickel piece, improve the horizontal accuracy that busbar and nickel piece were placed, avoid busbar and nickel piece to take place the slope.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the 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 perspective view of a busbar welding fixture of the present utility model;

FIG. 2 is an exploded view of the busbar bonding tool of the present utility model;

FIG. 3 is a cross-sectional view of the busbar bonding tool of the present utility model;

FIG. 4 is a schematic structural view of a base in the busbar welding fixture of the present utility model;

FIG. 5 is a bottom view of the busbar bonding tool of the present utility model;

fig. 6 is a schematic connection diagram of a busbar and a nickel sheet of the busbar welding tool of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 to 6, the busbar welding fixture is used for compacting a busbar 100 and a nickel sheet 101 and comprises a base 1, a positioning pile 2 and a magnet 3, wherein the positioning pile 2 is arranged on the base 1 and is used for positioning the busbar 100 and the nickel sheet 101; the magnet 3 is sleeved on the positioning pile 2 and selectively presses the busbar 100 and the nickel plate 101.

Specifically, as shown in fig. 6, the busbar 100 should also be welded with a copper sheet 102, the welded copper sheet 102 is used for connecting the negative electrode of the lithium battery core, the nickel sheet 101 is connected with the positive electrode of the lithium battery core, the busbar 100 is made of copper, so that the positive electrode and the negative electrode of the lithium battery core can be connected, the busbar 100 is plate-shaped, and the nickel sheet 101 and the copper sheet 102 are in a ring-shaped structure.

For simultaneously welding the nickel sheet 101 and the copper sheet 102, two spuds 2 and magnets 3 may be provided, the two spuds 2 corresponding to the nickel sheet 101 and the copper sheet 102, respectively, so that the nickel sheet 101 and the copper sheet 102 are simultaneously pressed against the busbar 100.

As a preferred embodiment, the metal sheet 4 is further included, the metal sheet 4 is disposed on the base 1 and is in the same vertical line with the magnet 3, and is used for pressing the busbar 100 and the nickel sheet 101 in cooperation with the magnet 3, and the base 1 has no magnetism and does not attract the magnet 3 mutually.

Specifically, the metal sheet 4 may be an iron sheet, and a rubber pad may be disposed between the metal sheet 4 and the base 1, so as to protect the metal sheet 4 and avoid deformation of the metal sheet 4.

As a preferred embodiment, the device further comprises a screw 5, wherein the screw 5 is arranged on the base 1, and the screw 5 penetrates through the metal sheet 4 and the base 1 to be in threaded connection with the positioning pile 2 and is used for fixing the metal sheet 4 and the positioning pile 2.

Specifically, but threaded connection between screw 5 and the base 1 to can pass the sheetmetal 4 on the base 1 through screw 5, the one end of screw 5 can pass the base 1 and expose outside partly simultaneously, and the corresponding screw thread that is provided with of spud 2, spud 2 can use with screw 5 cooperation, makes spud 2 fix on base 1.

As a preferred embodiment, the base 1 is provided with a sinking groove 11, and the sinking groove 11 is used for placing the busbar 100 and the nickel plate 101.

Specifically, through sinking groove 11, conveniently carry out preliminary location to busbar 100 and nickel piece 101 to reach the effect of placing fast, improve work efficiency.

As a preferred embodiment, the base 1 is provided with a boss 12, the boss 12 is located in the sinking groove 11, and the screw 5 passes through the boss 12, and the boss 12 abuts against the busbar 100 and the nickel plate 101.

As a preferred embodiment, the boss 12 includes a first contact ring 121 and a second contact ring 122, wherein the first contact ring 121 is fixed on the boss 12 and abuts against the busbar 100; the second contact ring 122 is fixed to the first contact ring 121 and abuts against the nickel plate 101.

Specifically, the thickness of the first contact ring 121 is the same as that of the busbar 100, and the thickness of the second contact ring 122 is the same as that of the nickel plate 101, so that the first contact ring 121 and the second contact ring 122 are abutted against the inner sides of the busbar 100 and the nickel plate 101, respectively.

As a preferred embodiment, the diameter of the first contact ring 121 is larger than the diameter of the second contact ring 122.

Specifically, the diameter of the first contact ring 121 is larger than that of the second contact ring 122, so that a boss structure can be formed, and the busbar 100 and the nickel plate 101 can be further supported.

As a preferred embodiment, the base 1 is provided with a mounting groove 10, the metal sheet 4 is positioned in the mounting groove 10, and the mounting groove 10 is used for mounting the screw 5; the metal sheet 4 and the screw 5 are conveniently installed through the arrangement of the installation groove 10, and the assembly is convenient.

The working principle of the embodiment is as follows:

firstly, performing early assembly, placing a metal sheet 4 in a mounting groove 10, fixing the metal sheet 4 in the mounting groove 10 through a screw 5, and exposing one end of the screw 5 through a boss 12;

then, aligning the positioning pile 2 with the exposed part of the screw 5, rotating until the lower end of the positioning pile 2 contacts with the base 1, and fixing the positioning pile 2 on the base 1 through the screw 5;

then, placing the busbar 100, the nickel sheet 101 and the copper sheet 102 to be welded in the sinking groove 11, and sleeving the sinking groove on the positioning pile 2, wherein the first contact ring 121 abuts against the busbar 100, and the second contact ring 122 abuts against the nickel sheet 101 or the copper sheet 102;

and finally, the magnet 3 is sleeved on the positioning pile 2 and is moved to be in contact with the nickel sheet 101 or the copper sheet 102, the nickel sheet 101 or the copper sheet 102 is pressed on the nickel sheet 101 or the copper sheet 102 under the action of mutual attraction of the magnet 3 and the metal sheet 4, and the contact part of the nickel sheet 101 or the copper sheet 102 and the busbar 100 is welded by laser welding until the welding work is completed.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. Busbar welding frock for compress tightly busbar (100) and nickel piece (101), its characterized in that: which comprises a base (1), a positioning pile (2) and a magnet (3), wherein,

the positioning pile (2) is arranged on the base (1) and is used for positioning the busbar (100) and the nickel sheet (101);

the magnet (3) is sleeved on the positioning pile (2) and selectively presses the busbar (100) and the nickel sheet (101).

2. The busbar welding fixture of claim 1, wherein: the metal sheet (4) is arranged on the base (1), is positioned on the same vertical line with the magnet (3) and is used for being matched with the magnet (3) to compress the busbar (100) and the nickel sheet (101).

3. The busbar welding fixture of claim 2, wherein: the screw (5) is arranged on the base (1), and the screw (5) penetrates through the metal sheet (4) and the base (1) and then is in threaded connection with the positioning pile (2) and is used for fixing the metal sheet (4) and the positioning pile (2).

4. The busbar welding fixture of claim 1, wherein: the base (1) is provided with a sinking groove (11), and the sinking groove (11) is used for placing the busbar (100) and the nickel sheet (101).

5. The busbar welding fixture of claim 4, wherein: be provided with boss (12) on base (1), boss (12) are located sink groove (11), and screw (5) pass boss (12), and boss (12) are all supported with busbar (100) and nickel piece (101).

6. The busbar welding fixture of claim 5, wherein: the boss (12) comprises a first contact ring (121) and a second contact ring (122), wherein,

the first contact ring (121) is fixed on the boss (12) and props against the busbar (100);

the second contact ring (122) is fixed on the first contact ring (121) and is abutted against the nickel sheet (101).

7. The busbar welding fixture of claim 6, wherein: the diameter of the first contact ring (121) is larger than the diameter of the second contact ring (122).

8. The busbar welding fixture of claim 3, wherein: the base (1) is provided with a mounting groove (10), the metal sheet (4) is positioned in the mounting groove (10), and the mounting groove (10) is used for mounting the screw (5).