CN213584081U

CN213584081U - Prevent cracked lithium battery tab

Info

Publication number: CN213584081U
Application number: CN202023014174.3U
Authority: CN
Inventors: 方秀忠; 叶仕廉; 林目春
Original assignee: Huizhou Jieer Technology Co ltd
Current assignee: Huizhou Jieer Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-06-29
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a prevent cracked lithium battery tab, including the sheetmetal, the last fixed surface of sheetmetal is connected with positive tab, the right side fixedly connected with negative pole ear of positive tab is just kept away from to the upper surface of sheetmetal, the equal fixedly connected with protective layer in surface of positive tab and negative pole ear, the upper surface of sheetmetal just is close to right edge department fixedly connected with fixed block, the surface of fixed block is provided with the screw hole, the inside swing joint of screw hole has the bolt. The utility model discloses, design bolt, fixed block and first baffle, second baffle can strengthen utmost point ear's fixed, avoids utmost point ear cracked phenomenon, designs the sheetmetal, and utmost point ear when the welding, increase welding area reduces the loss of utmost point ear, and the design protective layer prevents that utmost point ear from receiving the oxidation, improves the life-span of lithium cell, through fixing anodal ear and negative pole ear on same sheetmetal, can reduce welded time, improves the production efficiency of lithium cell.

Description

Prevent cracked lithium battery tab

Technical Field

The utility model relates to a lithium battery tab field especially relates to a prevent cracked lithium battery tab.

Background

As the name suggests, the lithium ion power battery tab is the tab used on the power battery, and the specification size and the current passing value are very large. Most of manufacturers supplying power tabs in the market at present adopt tab materials imported from korea mostly, but the tab materials may have different quality grades. The manufacturing process also has a great influence on the performance of the power tabs, so it is recommended that the power battery should use the power tabs imported from korea at the beginning.

Because the lug is easy to oxidize under the air, the service life of the lithium battery is shortened, the welding stressed area of the lug is too small in the welding process, the lug is not easy to weld, the positive lug and the negative lug are also welded in sequence when being welded, the welding time is prolonged, the production efficiency cannot be improved, a longer part of the lug is left on the battery core, the lug is not stable, and the lug is easy to break under the action of external force.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an anti-fracture lithium battery tab.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the anti-fracture lithium battery tab comprises a metal sheet, wherein the upper surface of the metal sheet is fixedly connected with a positive tab, and the right side of the upper surface of the metal sheet, which is far away from the positive tab, is fixedly connected with a negative tab;

the surfaces of the positive electrode lug and the negative electrode lug are fixedly connected with a protective layer, the upper surface of the metal sheet close to the right edge is fixedly connected with a fixed block, the surface of the fixed block is provided with a threaded hole, a bolt is movably connected inside the threaded hole, and one end of the bolt extends to the outside of the fixed block;

the bolt is rotatably connected with a first partition plate through a bearing, and one side of the upper surface of the metal sheet far away from the first partition plate is fixedly connected with a second partition plate.

As a further description of the above technical solution:

the first partition plate and the second partition plate are respectively and fixedly connected to the left side face and the right side face of the negative electrode lug through the protective layers.

As a further description of the above technical solution:

the corners of the positive electrode lug, the negative electrode lug and the metal sheet are all provided with rounded corners.

As a further description of the above technical solution:

the material used for the positive electrode tab is aluminum, and the material used for the negative electrode tab is nickel.

As a further description of the above technical solution:

the upper surface of the metal sheet is provided with an insulating layer, an insulator is arranged inside the insulating layer, and the insulator is made of epoxy resin.

As a further description of the above technical solution:

the metal sheet is characterized in that an isolation layer is arranged inside the metal sheet and between the positive electrode lug and the negative electrode lug, and the isolation layer is made of silica gel.

As a further description of the above technical solution:

the protective layer is made of a film.

As a further description of the above technical solution:

the positive electrode lug and the negative electrode lug are symmetrically arranged and have the same structure.

The utility model discloses following beneficial effect has:

1. compared with the prior art, this prevent cracked lithium battery tab through design bolt, fixed block and first baffle, second baffle, can strengthen the fixed of utmost point ear, avoids the cracked phenomenon of utmost point ear.

2. Compared with the prior art, this prevent cracked lithium battery tab through design sheetmetal, utmost point ear when the welding, increase welding area improves the success nature of welding, reduces the loss of utmost point ear.

3. Compared with the prior art, this prevent cracked lithium battery tab through the design protective layer, prevents that utmost point ear from receiving the oxidation, improves the life-span of lithium cell.

4. Compared with the prior art, the anti-fracture lithium battery tab can reduce the welding time and improve the production efficiency of the lithium battery by fixing the positive tab and the negative tab on the same metal sheet.

Drawings

Fig. 1 is a schematic view of an overall structure of a lithium battery tab with fracture prevention according to the present invention;

fig. 2 is a schematic view of an internal structure of a lithium battery tab for preventing fracture according to the present invention;

fig. 3 is a top view of a lithium battery tab with fracture prevention according to the present invention;

fig. 4 is a side view of a lithium battery tab for preventing fracture according to the present invention.

Illustration of the drawings:

1. a metal sheet; 2. a bolt; 3. a threaded hole; 4. a fixed block; 5. a first separator; 6. a protective layer; 7. a negative tab; 8. a protective layer; 9. a second separator; 10. a positive tab; 11. an insulating layer; 12. a bearing; 13. and an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the utility model provides a pair of prevent cracked lithium battery tab: including sheetmetal 1, the last fixed surface of sheetmetal 1 is connected with anodal ear 10, the right side fixedly connected with negative pole ear 7 of anodal ear 10 is just kept away from to the upper surface of sheetmetal 1, anodal ear 10 is symmetrical arrangement with negative pole ear 7, and the structure is the same, anodal ear 10's use material is aluminium, except nickel, can also be with copper, plate etc., the inside of insulating layer 11 is provided with the use material of insulator negative pole ear 7 and is nickel, anodal ear 10, negative pole ear 7, the turning part of sheetmetal 1, all set up to the radius angle, avoid the staff to be injured.

Anodal ear 10 and the equal fixedly connected with protective layer 8 in surface of negative pole ear 7 prevent that utmost point ear from receiving the oxidation, improve the life-span of lithium cell, and protective layer 8's use material is the film, and the upper surface of sheetmetal 1 just is close to right edge department fixedly connected with fixed block 4, fixing bolt 2, and the surface of fixed block 4 is provided with screw hole 3, and the inside swing joint of screw hole 3 has bolt 2, and bolt 2's one end extends to the outside of fixed block 4.

Bolt 2 rotates through bearing 12 and is connected with first baffle 5, and one side fixedly connected with second baffle 9 that first baffle 5 was just kept away from to the upper surface of sheetmetal 1, and first baffle 5 passes through inoxidizing coating 6 difference fixed connection in the left and right sides face of negative pole ear 7 with second baffle 9, through the fixed utmost point ear of first baffle 5 with second baffle 9, prevents to receive the exogenic action, leads to the fracture.

Positive tab 10, negative pole ear 7, the turning department of sheetmetal 1 all set up to the fillet, and the upper surface of sheetmetal 1 is provided with insulating layer 11, and the inside of insulating layer 11 is provided with the insulator, and the material of using of insulator is epoxy, and the inside of sheetmetal 1 just is located and is provided with insulating layer 13 between positive tab 10 and the negative pole ear 7, and the material of using of insulating layer 13 is silica gel.

The working principle is as follows: anodal ear 10 and negative pole ear 7 do, and the same anodal ear 10 of structure and negative pole ear 7 are through the welding at the upper surface of sheetmetal 1, and one side of negative pole ear 7 is near second baffle 9, and first baffle 5 carries out the extrusion action through axle sleeve 13 and bolt 2, fixes negative pole ear 7 between first baffle 5 and second baffle 9, avoids receiving external force to disturb, leads to the fracture, and anodal ear 10 fixed mode is the same with the aforesaid.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a prevent cracked lithium battery tab, includes sheetmetal (1), its characterized in that: the upper surface of the metal sheet (1) is fixedly connected with a positive lug (10), and the upper surface of the metal sheet (1) positioned on the right side of the positive lug (10) is fixedly connected with a negative lug (7);

the surface of the positive lug (10) and the surface of the negative lug (7) are both fixedly connected with a protective layer (8), the upper surface of the metal sheet (1) close to the right edge is fixedly connected with a fixed block (4), the surface of the fixed block (4) is provided with a threaded hole (3), the interior of the threaded hole (3) is movably connected with a bolt (2), and one end of the bolt (2) extends to the exterior of the fixed block (4);

bolt (2) are connected with first baffle (5) through bearing (12) rotation, the upper surface of sheetmetal (1) just keeps away from left side fixedly connected with second baffle (9) of first baffle (5).

2. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the first partition plate (5) and the second partition plate (9) are respectively and fixedly connected to the left side surface and the right side surface of the negative electrode lug (7) through the protective layer (6).

3. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the corners of the positive tab (10), the negative tab (7) and the metal sheet (1) are rounded.

4. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the anode tab (10) is made of aluminum, and the cathode tab (7) is made of nickel.

5. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the metal sheet is characterized in that an insulating layer (11) is arranged on the upper surface of the metal sheet (1), an insulator is arranged inside the insulating layer (11), and the insulator is made of epoxy resin.

6. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the metal sheet is characterized in that an isolation layer (13) is arranged in the metal sheet (1) and between the positive electrode lug (10) and the negative electrode lug (7), and the isolation layer (13) is made of silica gel.

7. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the used material of the protective layer (8) is a film.

8. The anti-fracture lithium battery tab as claimed in claim 1, wherein: the positive electrode tab (10) and the negative electrode tab (7) are symmetrically arranged and have the same structure.