CN218123664U

CN218123664U - Novel lug connection structure

Info

Publication number: CN218123664U
Application number: CN202222164309.7U
Authority: CN
Inventors: 代辉
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-12-23
Anticipated expiration: 2032-08-17

Abstract

The utility model discloses a novel utmost point ear connection structure, including battery body, battery body includes the casing, be equipped with in the casing and roll up the core, casing top one side is equipped with positive wiring structure, casing top is kept away from positive wiring structure one side and is equipped with negative pole wiring structure, positive wiring structure is the same with negative pole wiring structure, positive wiring structure includes the positive terminal, positive terminal below and connecting rod fixed connection, be equipped with the pole piece that a plurality of equidistance were arranged on the connecting rod, pole piece below and roll up core fixed connection. The connection structure is simple, the connection area of the tab and the tab is increased by combining the current ultrasonic welding mode, the internal resistance of the battery is reduced, and the use safety of the battery is effectively guaranteed.

Description

Novel lug connection structure

Technical Field

The utility model discloses battery processing technology field specifically indicates a novel utmost point ear connection structure.

Background

When the tabs are welded, ultrasonic welding is used, and the tabs are easy to fall off in the tab welding process, so that the internal resistance of the battery is increased; among the prior art, the ultrasonic bonding technique that uses, in present technique, the utmost point ear rosin joint appears very easily, leads to the utmost point ear of bottom not to weld well to increase electric core internal resistance, increase calorific capacity after in groups, increase the risk of battery thermal runaway then, consequently, to the affairs of utmost point ear rosin joint, need solve the internal resistance increase problem that utmost point ear rosin joint leads to. And then internal resistance is reduced, and the thermal runaway risk of the battery is reduced.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a novel utmost point ear connection structure. The current ultrasonic welding mode is combined, the connecting area of the pole lugs and the pole lugs is increased, the internal resistance of the battery is reduced, and the use safety of the battery is effectively guaranteed.

The utility model adopts the following technical scheme: the utility model provides a novel utmost point ear connection structure, includes battery body, battery body includes the casing, be equipped with in the casing and roll up a core, casing top one side is equipped with positive wiring structure, positive wiring structure one side is kept away from to the casing top is equipped with negative wiring structure, positive wiring structure is the same with negative wiring structure, positive wiring structure includes the positive terminal, positive terminal below and connecting rod fixed connection, be equipped with the pole piece that a plurality of equidistance were arranged on the connecting rod, pole piece below and roll up core fixed connection.

Preferably, an end cover is arranged on one side, away from the positive terminal, of the connecting rod. Like this, the effectual stability of having ensured the whole resistance of connecting rod.

Preferably, the connecting rod and the end cover are of an integrated structure. Therefore, the structure is more stable and firm, and looseness is not easy to occur.

Preferably, the positive wiring structure and the negative wiring structure are respectively provided with a tab adhesive on the contact surface with the shell. Therefore, the tab glue can insulate the positive wiring structure and the negative wiring structure.

Preferably, the tab glue comprises a glue body, and a plurality of anti-overflow glue grooves distributed at equal intervals are formed in the outer side of the glue body. Therefore, when the tab glue is subjected to hot melting, the phenomenon of glue overflow of the tab glue is avoided.

Preferably, the section of the glue overflow preventing groove is rectangular or arc-shaped.

Preferably, the upper ends of the positive electrode wiring structure and the negative electrode wiring structure are both provided with connecting holes.

The connecting rod forms the integral type structure with the end cover, welds through the mode that resistance welded between connecting rod and the pole piece, and the effectual area of contact that increases each utmost point ear of this kind of structure, the effectual phenomenon of desoldering of avoiding a small number of utmost point ears sets up the glue overflow prevention recess in the colloid outside, and the effectual utmost point ear of having avoided glues the phenomenon that the glue overflow appears when carrying out the hot melt. The connection structure is simple, the connection area of the pole lug and the pole lug is increased by combining the current ultrasonic welding mode, the internal resistance of the battery is reduced, and the use safety of the battery is effectively guaranteed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic diagram of the positive wiring structure of the present invention;

fig. 4 is a schematic view of the tab glue structure of the present invention;

in the figure: the battery comprises a battery body 1, a shell 11, a winding core 12, a positive wiring structure 2, a positive wiring terminal 21, a connecting rod 22, a pole piece 23, an end cover 24, a negative wiring structure 3, tab glue 4, glue 41, an anti-overflow glue groove 42 and a connecting hole 5.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a novel tab connection structure according to the present invention will be described in detail with reference to the accompanying drawings.

In the present embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", 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 of the present invention, and 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.

As shown in fig. 1-4, the utility model provides a novel utmost point ear connection structure, including battery body 1, battery body 1 includes casing 11, be equipped with in the casing 11 and roll up core 12, casing 11 top one side is equipped with anodal wiring structure 2, casing 11 top is kept away from anodal wiring structure 2 one side and is equipped with negative pole wiring structure 3, anodal wiring structure 2 is the same with negative pole wiring structure 3 structure, anodal wiring structure 2 includes anodal terminal 21, anodal terminal 21 below and connecting rod 22 fixed connection, be equipped with the pole piece 23 that a plurality of equidistance were arranged on the connecting rod 22, pole piece 23 below and roll up core 12 fixed connection, pole piece 23 middle part is pegged graft and is had connecting rod 22, through connecting rod 22 set up the area of contact between the increase pole piece 23, has avoided appearing the phenomenon of rosin joint because of area is little between the pole piece 23.

Connecting rod 22 is kept away from positive terminal 21 one side and is equipped with end cover 24, and end cover 24 is made through the mode of colding pressing by connecting rod 22 for connecting rod 22 forms the integral type structure with end cover 24, thereby the effectual stability of the holistic resistance of guaranteeing connecting rod 22.

The connecting rod 22 and the end cap 24 are of an integral structure.

Anodal wiring structure 2 and negative pole wiring structure 3 all are equipped with utmost point ear and glue 4 with 11 contact surfaces of casing, and utmost point ear is glued 4 and can is insulated to anodal wiring structure 2 and negative

pole wiring structure

3 and 11 contact surfaces of casing.

The tab glue 4 comprises a glue body 41, a plurality of overflow-preventing glue grooves 42 arranged at equal intervals are formed in the outer side of the glue body 41, and the overflow-preventing glue grooves 42 enable the tab glue 4 to be melted in a hot melting mode, so that the phenomenon that glue overflows from the tab glue 4 is avoided.

The section of the glue overflow preventing groove 42 is rectangular or arc-shaped.

The shell 11 is a metal aluminum shell, and the metal aluminum shell has the characteristics of light weight, high strength, stable structure and the like.

And the upper ends of the positive wiring structure 2 and the negative wiring structure 3 are provided with connecting holes 5.

Specifically, the utility model discloses in, it is concrete the utility model discloses in, the circular port at pole piece 23 middle part, by laser cross cutting gained, pole piece 23 middle part is pegged graft and is had connecting rod 22, and connecting rod 22 is pegged graft inside the circular port at pole piece 23 middle part, and end cover 24 is made through the mode of colding pressing by connecting rod 22 for connecting rod 22 and end cover 24 form the integral type structure, welds through the mode of resistance welding between connecting rod 22 and the pole piece 23, through ultrasonic bonding between pole piece 23 and the book core 12. This kind of structure, the effectual area of contact that has increased each utmost point ear, the effectual phenomenon of desoldering of avoiding a small number of utmost point ears, utmost point ear glue 4 can insulate to the contact surface of positive pole wiring structure 2 and negative pole wiring structure 3 with casing 11, and simultaneously, the colloid 41 outside sets up prevents overflowing gluey recess 42, has effectually avoided utmost point ear glue 4 the phenomenon of overflowing gluey appearing when carrying out the hot melt.

It should be understood by those skilled in the art that the specific embodiments herein are merely illustrative of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel pole ear connection structure is characterized in that: including battery body (1), battery body (1) includes casing (11), be equipped with in casing (11) and roll up core (12), casing (11) top one side is equipped with positive wiring structure (2), casing (11) top is kept away from positive wiring structure (2) one side and is equipped with negative wiring structure (3), positive wiring structure (2) are the same with negative wiring structure (3) structure, positive wiring structure (2) include positive terminal (21), positive terminal (21) below and connecting rod (22) fixed connection, be equipped with pole piece (23) that a plurality of equidistance were arranged on connecting rod (22), pole piece (23) below and roll up core (12) fixed connection.

2. A novel tab connection structure as claimed in claim 1, wherein: and an end cover (24) is arranged on one side of the connecting rod (22) far away from the positive terminal (21).

3. A novel tab connection structure as claimed in claim 2, wherein: the connecting rod (22) and the end cover (24) are of an integrated structure.

4. A novel tab connection structure as claimed in claim 1, wherein: and the contact surfaces of the positive wiring structure (2) and the negative wiring structure (3) and the shell (11) are respectively provided with a tab glue (4).

5. The novel tab connection structure as claimed in claim 4, wherein: the tab glue (4) comprises a glue body (41), and a plurality of overflow-preventing glue grooves (42) which are distributed at equal intervals are formed in the outer side of the glue body (41).

6. The novel tab connection structure as claimed in claim 5, wherein: the section of the glue overflow preventing groove (42) is rectangular or arc.

7. A novel tab connection structure as claimed in claim 1, wherein: and the upper ends of the positive wiring structure (2) and the negative wiring structure (3) are respectively provided with a connecting hole (5).