CN218039506U

CN218039506U - Insulating sealing ring for lithium battery

Info

Publication number: CN218039506U
Application number: CN202221965404.0U
Authority: CN
Inventors: 杨海鹰; 周兵; 郑传超
Original assignee: Chengdu Hongtu Chaoyue Engineering Technology Co ltd
Current assignee: Chengdu Hongtu Chaoyue Engineering Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-13
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses an insulating seal circle for lithium cell relates to lithium cell technical field. The battery comprises a battery body, wherein sealing assemblies are arranged at the top end and the bottom end of the battery body, and an insulating layer is arranged on the outer wall of the battery body; the sealing assembly comprises a circular ring, the bottom end of the circular ring is fixed to the top end of the battery body, the top end of the circular ring is fixedly connected with a sleeve, the top end of the sleeve is fixedly connected with a limiting protrusion, an anode piece is arranged inside the sealing assembly, a cathode piece is arranged inside the sealing assembly at the bottom end of the battery body, and an anode lug is arranged between the anode piece and the battery body. The utility model discloses a setting of insulating layer and sealing washer, when the elasticity of sealing washer constantly reduces along with the increase of time, the insulating layer has increased the sealed effect of sealing washer according to old sealed effect to sealing washer and battery body for the time of the sealed effect of whole sealing washer becomes long, has improved the life of this battery.

Description

Insulating sealing ring for lithium battery

Technical Field

The utility model relates to a lithium cell technical field specifically is an insulating sealing washer for lithium cell.

Background

The lithium battery is a battery using lithium metal or lithium alloy as a negative electrode material and a nonaqueous electrolyte solution, and therefore, such a battery is also called a lithium metal battery, and a sealing ring is generally used in the production of the lithium battery to ensure the sealing property of the lithium battery.

The sealing ring in the lithium battery can disappear gradually after being used for a long time, the sealing effect of the opposite sealing ring is reduced, the reduction of the sealing effect possibly can lead to the leakage of electrolyte, and therefore the insulating sealing ring for the lithium battery is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating sealing washer for lithium cell to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: an insulating sealing ring for a lithium battery comprises a battery body, wherein sealing assemblies are arranged at the top end and the bottom end of the battery body respectively, and an insulating layer is arranged on the outer wall of the battery body;

the sealing assembly comprises a circular ring, the bottom end of the circular ring is fixed to the top end of the battery body, the top end of the circular ring is fixedly connected with a sleeve, the top end of the sleeve is fixedly connected with a limiting protrusion, an anode piece is arranged inside the sealing assembly, a cathode piece is arranged inside the sealing assembly at the bottom end of the battery body, an anode lug is arranged between the anode piece and the battery body, and a cathode lug is arranged between the cathode piece and the battery body.

Preferably, the top of positive pole piece contacts with the bottom of spacing arch, and the bottom of positive pole piece contacts with the top of ring.

Preferably, the top of negative pole piece contacts with the bottom of ring, and the bottom of negative pole piece contacts with spacing bellied top.

Preferably, the top end of the inner part of the insulating layer is contacted with the top end of the circular ring, and the inner wall of the top end of the insulating layer is contacted with the outer wall of the sleeve.

Preferably, the boss is installed on the top of anodal piece, and the outer wall looks adaptation of spacing bellied inner wall and boss, anodal piece's outer wall and sheathed tube inner wall contact, and the outer wall of negative pole piece and sheathed tube inner wall contact.

Preferably, the battery body, the positive electrode piece and the positive electrode tab are electrically connected in sequence, and the battery body, the negative electrode tab and the negative electrode piece are electrically connected in sequence.

Compared with the prior art, the beneficial effects of the utility model are that:

this insulating sealing washer for lithium cell through the setting of insulating layer and sealing washer, when the elasticity of sealing washer when the increase of time constantly reduces, the insulating layer has increased the sealed effect of sealing washer according to old sealed effect to sealing washer and battery body for the time of the sealed effect of whole sealing washer becomes long, has improved the life of this battery.

This insulating sealing washer for lithium cell through the structural design of sealing washer, and sealing washer and insulating layer combine can be so that battery body obtains good sealed effect, positive pole piece and the negative pole piece of installation on the sealing washer for the battery is convenient for install when using, and the positive pole piece accessible on the sealing washer is spacing protruding and is contacted with the negative pole piece of another battery, and the user of being convenient for uses.

Drawings

Fig. 1 is an isometric view of the present invention;

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

fig. 3 is an isometric view of the seal assembly of the present invention.

In the figure: 1. a battery body; 2. an insulating layer; 3. a seal assembly; 301. a circular ring; 302. a limiting bulge; 303. a sleeve; 4. a positive tab; 5. a negative tab; 6. a positive electrode member; 7. a negative pole piece.

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.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, 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.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, e.g., the thickness or width of some layers may be exaggerated relative to other layers.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1-3, the utility model provides a technical solution: an insulating seal ring for a lithium battery comprises a battery body 1, wherein sealing assemblies 3 are mounted at the top end and the bottom end of the battery body 1, and an insulating layer 2 is mounted on the outer wall of the battery body 1;

seal assembly 3 includes ring 301, the bottom of ring 301 and battery body 1's top are fixed, the top fixedly connected with sleeve pipe 303 of ring 301, the inside spacing arch 302 of top fixedly connected with of sleeve pipe 303, seal assembly 3's internally mounted has anodal 6, the internally mounted of seal assembly 3 of battery body 1 bottom has negative pole piece 7, install anodal ear 4 between anodal 6 and the battery body 1, install negative pole ear 5 between negative pole piece 7 and the battery body 1.

The top of positive pole piece 6 contacts with the bottom of spacing arch 302, and the bottom of positive pole piece 6 contacts with the top of ring 301, and the top of negative pole piece 7 contacts with the bottom of ring 301, and the bottom of negative pole piece 7 contacts with the top of spacing arch 302.

The inside top of insulating layer 2 contacts with the top of ring 301, and the inner wall on insulating layer 2 top contacts with the outer wall of sleeve pipe 303, and the outer wall of positive pole piece 6 contacts with the inner wall of sleeve pipe 303, and the outer wall of negative pole piece 7 contacts with the inner wall of sleeve pipe 303, and the boss is installed on the top of positive pole piece 6, the outer wall looks adaptation of the inner wall of spacing arch 302 and boss.

The battery body 1, the positive electrode piece 6 and the positive electrode tab 4 are electrically connected in sequence, and the battery body 1, the negative electrode tab 5 and the negative electrode piece 7 are electrically connected in sequence.

The tab is a metal conductor which is led out from a battery core, a seal is formed between the seal assembly 3 and the insulation layer 2, the insulation layer 2 also has a sealing effect, the seal line is of a layered structure, when the sealing effect of the most marginal seal line becomes low, the sealing effect of the inside seal line is not influenced, the sealing effect of the seal assembly 3 can be improved, a seal line is formed between the inside of the seal assembly 3 and the positive electrode piece 6 or the negative electrode piece 7, the seal line also has a layered structure, the sealing effect can be improved, the limit bulge 302 and the ring 301 can fix the positive electrode piece 6 or the negative electrode piece 7, when a battery needs to be installed, the boss of the positive electrode piece 6 can pass through the limit bulge 302 of the other seal assembly 3 to be contacted with the negative electrode piece 7, through the design of the limit bulge 302, when the battery is connected in series, the installation is convenient, the two end surfaces of the battery body 1 are partially shielded by the circular ring 301, the circular ring 301 is used for ensuring the installation of the positive electrode lug 4 and the negative electrode lug 5, the positive electrode lug 4 and the negative electrode lug 5 are positioned at the center of the circular ring 301 after being installed, when the battery is assembled, firstly, the positive electrode piece 6 and the sealing component 3 are mutually fixed, the negative electrode piece 7 and the sealing component 3 are mutually fixed, then, the positive electrode lug 4 and the negative electrode lug 5 are respectively fixed at the top end and the bottom end of the battery body 1, so that the positive electrode piece 6 of the positive electrode lug 4 is electrically connected, the negative electrode lug 5 and the negative electrode piece 7 are electrically connected, when the electrical connection is carried out, the sealing components 3 are respectively installed at the top end and the bottom end of the battery body 1, finally, the insulating layer 2 is installed, all the contacts are sealed contacts, the sealed contacts are adopted, and the sealing contact is used for ensuring the sealing performance of the battery, avoid leading to because of the leakproofness is not good, the life of battery reduces, through the setting of insulating layer 2 and sealing washer, when the elasticity of sealing washer constantly reduces along with the increase of time, insulating layer 2 still has sealed effect to sealing washer and battery body 1, the sealed effect of sealing washer has been increased, make the time of the sealed effect of whole sealing washer become long, the life of this battery has been improved, structural design through the sealing washer, sealing washer and insulating layer 2 combine can make battery body 1 obtain good sealed effect, anodal 6 and negative pole piece 7 of installation on the sealing washer, make the battery be convenient for install when using, anodal 6 accessible spacing arch 302 on the sealing washer contacts with the negative pole piece 7 of another battery, convenient to use user uses.

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 an insulating sealing washer for lithium cell, includes battery body (1), its characterized in that: the top end and the bottom end of the battery body (1) are both provided with a sealing assembly (3), and the outer wall of the battery body (1) is provided with an insulating layer (2);

seal assembly (3) are including ring (301), and the bottom of ring (301) is fixed with the top of battery body (1), the top fixedly connected with sleeve pipe (303) of ring (301), the inside spacing arch (302) of top fixedly connected with of sleeve pipe (303), the internally mounted of seal assembly (3) has positive pole piece (6), the internally mounted of seal assembly (3) of battery body (1) bottom has negative pole piece (7), installs between positive pole piece (6) and battery body (1) anodal ear (4), installs negative pole ear (5) between negative pole piece (7) and battery body (1).

2. The insulating sealing ring for the lithium battery as claimed in claim 1, wherein: the top end of the positive pole piece (6) is contacted with the bottom end of the limiting bulge (302), and the bottom end of the positive pole piece (6) is contacted with the top end of the circular ring (301).

3. The insulating sealing ring for the lithium battery as claimed in claim 1, wherein: the top end of the negative pole piece (7) is contacted with the bottom end of the circular ring (301), and the bottom end of the negative pole piece (7) is contacted with the top end of the limiting bulge (302).

4. The insulating sealing ring for the lithium battery as claimed in claim 1, wherein: the top end of the inner part of the insulating layer (2) is contacted with the top end of the circular ring (301), and the inner wall of the top end of the insulating layer (2) is contacted with the outer wall of the sleeve (303).

5. The insulating sealing ring for the lithium battery as claimed in claim 1, wherein: the boss is installed on the top of positive pole piece (6), and the outer wall looks adaptation of the inner wall of spacing arch (302) and boss, the outer wall of positive pole piece (6) and the inner wall of sleeve pipe (303) contact, and the outer wall of negative pole piece (7) and the inner wall of sleeve pipe (303) contact.

6. The insulating sealing ring for the lithium battery as claimed in claim 1, wherein: the battery body (1), the positive piece (6) and the positive lug (4) are electrically connected in sequence, and the battery body (1), the negative lug (5) and the negative piece (7) are electrically connected in sequence.