CN209947932U

CN209947932U - Button cell without negative pole lug lamination

Info

Publication number: CN209947932U
Application number: CN201921041672.1U
Authority: CN
Inventors: 孙国林
Original assignee: Chongqing Weiduli New Energy Co Ltd
Current assignee: Chongqing Weiduli New Energy Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-01-14
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a button cell without negative pole ear lamination, which comprises a positive pole shell, a negative pole shell is arranged in the positive pole shell, conductive adhesive is arranged in the negative pole shell, the utility model pre-coats the conductive adhesive on the side wall of the negative pole shell far away from the positive pole ear, then a stack core composed of negative pole pieces and positive pole pieces alternately arranged is put in the negative pole shell, the stack core is directly connected with the conductive adhesive through the uppermost negative pole piece, so that the conductive adhesive connected with the negative pole piece can replace the traditional negative pole ear, the negative pole ear is removed by using the conductive adhesive to replace the negative pole ear, the risk that the negative pole ear is welded and broken or the negative pole shell is welded can be effectively avoided, the positive pole shell and the negative pole shell are of two mutually inverted concave structures, the negative pole shell is reversely buckled in the positive pole shell, and a sealing ring is formed between the negative pole shell and the positive pole shell through extrusion, the sealing performance between the positive electrode shell and the negative electrode shell can be effectively improved.

Description

Button cell without negative pole lug lamination

Technical Field

The utility model relates to a battery, in particular to no negative pole ear lamination button cell belongs to lamination button cell inner structure technical field.

Background

Lithium ion battery has specific energy height, the cycle performance is good, it is longe-lived, operating voltage is high and safe, no advantage such as memory effect, wide application has been in portable electronic equipment, in the drive of energy storage equipment and electric motor car, common battery adopts metal casing like cylinder battery, button cell etc. its shell is many, battery itself need be through the welded mode, be connected negative pole ear and negative pole casing, this kind of mode technology degree of difficulty is big, and very easily take place to weld disconnected negative pole ear or weld the negative pole casing during the welding, the yield is low, for solving above-mentioned technical problem, the utility model provides a no negative pole ear lamination button cell.

SUMMERY OF THE UTILITY MODEL

The utility model provides a no negative pole ear lamination button cell can the foretell technical problem of effectual solution.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a no negative pole ear lamination button cell, includes anodal shell, the inside negative pole shell that is equipped with of anodal shell, the inside conducting resin that is equipped with of negative pole shell, negative pole shell internal connection has and folds the core, it is connected with negative pole ear crowd and anodal ear crowd respectively to fold the both sides that the core kept away from each other, the inside one side intermediate junction of anodal shell has anodal ear, form sealedly through the extrusion sealing washer between anodal shell and the negative pole shell.

As an optimized technical scheme of the utility model, the conducting resin is paintd on the inside one side lateral wall of keeping away from anodal ear of negative pole shell, anodal shell and negative pole shell are "concave" font structure of handstand each other.

As the utility model discloses a preferred technical scheme, it includes negative pole piece and positive plate to fold the core, it puts in turn in proper order and forms for a plurality of negative pole piece and positive plate to fold the core, the parcel has the diaphragm on the positive plate, positive ear crowd is connected with all positive plates, negative pole ear crowd is connected with all negative pole pieces, it is connected with the conducting resin through the negative pole piece of the superiors to fold the core.

As an optimized technical scheme of the utility model, anodal ear is connected with anodal ear crowd.

The utility model discloses the beneficial effect who reaches is: the utility model discloses paint conducting resin in advance on the inside one side lateral wall of keeping away from anodal ear of negative pole shell casing, later put into the negative pole shell by negative pole piece and the positive plate in turn put the core of folding of constituteing, fold the negative pole piece and conducting resin lug connection of core through the superiors, make the conducting resin of being connected with the negative pole piece can replace traditional negative pole ear, remove the negative pole ear through using conducting resin to replace this kind of mode of negative pole ear, can effectually avoid the negative pole ear to be welded absolutely or the risk that the negative pole shell body was welded and is worn, positive shell and negative pole shell are two "concave" font structures of standing upside down each other, and the negative pole shell then the back-off is inside positive shell, and form sealedly through the extrusion seal circle between negative pole shell and positive shell, can the effectual sealing performance that increases between positive shell and the negative pole.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic plan sectional structure of the present invention.

In the figure: 1. a positive electrode case; 2. a negative electrode case; 3. a conductive adhesive; 4. stacking the cores; 41. a negative plate; 42. a positive plate; 5. a negative electrode tab group; 6. a positive tab group; 7. a positive tab; 8. and (5) sealing rings.

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.

Example (b): as shown in fig. 1, a no negative pole ear lamination button cell, including positive pole shell 1, 1 inside negative pole shell 2 that is equipped with of positive pole shell, 2 inside conducting resins 3 that are equipped with of negative pole shell, 2 internal connection of negative pole shell have fold core 4, it is connected with negative pole ear crowd 5 and positive pole ear crowd 6 respectively to fold the both sides that core 4 kept away from each other, 1 inside one side intermediate junction of positive pole shell has positive pole ear 7, form through extrusion seal circle 8 between positive pole shell 1 and the negative pole shell 2 and seal.

Conductive adhesive 3 is paintd on the inside lateral wall of keeping away from anodal ear 7 of negative pole shell 2, anodal shell 1 and negative pole shell 2 are "concave" font structure of handstand each other, it includes negative pole piece 41 and anodal piece 42 to fold core 4, it forms to fold core 4 for a plurality of negative pole piece 41 and anodal piece 42 in proper order to put in turn, the parcel has the diaphragm on the anodal piece 42, anodal ear crowd 6 is connected with all anodal pieces 42, negative pole ear crowd 5 is connected with all negative pole pieces 41, it is connected with conductive adhesive 3 through the negative pole piece 41 of the superiors to fold core 4, anodal ear 7 is connected with anodal ear crowd 6.

Specifically, scribble conducting resin 3 in advance on the inside lateral wall of keeping away from anodal ear 7 of 2 casings of negative pole shell, later put into to negative pole shell 2 by negative pole piece 41 and anodal piece 42 in turn put the core 4 of folding of constituteing, fold core 4 through the negative pole piece 41 and the 3 lug of conducting resin of the superiors, make conducting resin 3 of being connected with negative pole piece 41 can replace traditional negative pole ear, remove the negative pole ear through using this kind of mode of conducting resin 3 to replace the negative pole ear, can effectually avoid the negative pole ear to be welded absolutely or the risk that the negative pole casing is welded and worn, anodal shell 1 and negative pole shell 2 are two "concave" font structures of standing upside down each other, and negative pole shell 2 then the back-off is inside anodal shell 1, and form sealedly through extrusion seal circle 8 between negative pole shell 2 and anodal shell 1, can effectually increase the sealing performance between anodal shell 1 and the negative pole shell 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a no negative pole ear lamination button cell, its characterized in that, includes anodal shell (1), anodal shell (1) is inside to be equipped with negative pole shell (2), negative pole shell (2) inside is equipped with conducting resin (3), core (4) are folded to negative pole shell (2) internal connection, it is connected with negative pole ear crowd (5) and anodal ear crowd (6) respectively to fold the both sides that core (4) kept away from each other, the inside one side intermediate junction of anodal shell (1) has anodal ear (7), form sealedly through extrusion seal circle (8) between anodal shell (1) and negative pole shell (2).

2. The button cell without the negative electrode tab lamination is characterized in that the conductive adhesive (3) is coated on the side wall of the negative electrode shell (2) far away from the positive electrode tab (7), and the positive electrode shell (1) and the negative electrode shell (2) are in inverted concave structures.

3. The button cell without the negative tab lamination of claim 1, wherein the stacked core (4) comprises a negative tab (41) and a positive tab (42), the stacked core (4) is formed by alternately arranging a plurality of negative tabs (41) and positive tabs (42) in sequence, the positive tab (42) is wrapped with a diaphragm, the positive tab group (6) is connected with all the positive tabs (42), the negative tab group (5) is connected with all the negative tabs (41), and the stacked core (4) is connected with the conductive adhesive (3) through the uppermost negative tab (41).

4. The button cell without the negative tab lamination as claimed in claim 1, wherein the positive tab (7) is connected with the positive tab group (6).