CN211578796U

CN211578796U - Lithium battery cap with dustproof function

Info

Publication number: CN211578796U
Application number: CN202020464897.4U
Authority: CN
Inventors: 曹玉超; 付文科; 谢圣蒙; 胡志军; 周佳
Original assignee: Wuxi Hongyun Technology Co ltd
Current assignee: Beijing Yiben Zhengjing Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-09-25
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a lithium cell block with dustproof function, including battery case, block body, first sealing ring, second sealing ring, upper cover, insulating ring, explosion-proof piece, bottom, air vent and connection piece, the inside sliding connection of battery case one end has a block body, block body and first sealing ring of battery case junction fixedly connected with, this internal upper end fixedly connected with of block second sealing ring, outside-in is fixed connection with upper cover, explosion-proof piece and insulating ring in proper order in the second sealing ring, a mounting groove has been seted up in the insulating ring, explosion-proof piece fixed connection is in the mounting groove, the utility model discloses the beneficial effect who reaches is: through increasing the effectual inside gas tightness that improves the battery of first sealing ring and second sealing ring, the effectual entering that prevents the dust has improved the life of battery, and explosion-proof construction can effectually improve the security of battery simultaneously.

Description

Lithium battery cap with dustproof function

Technical Field

The utility model relates to a lithium cell block, in particular to lithium cell block with dustproof function belongs to electronic equipment protection technical field.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, and the lithium metal has very high requirements on the environment due to the very active chemical characteristics of the lithium metal, so the lithium battery becomes a mainstream along with the development of scientific technology.

However, in the long-term use process of the lithium battery, the sealing performance is not good, and some fine dust enters the battery, so that the service life of the battery is influenced, meanwhile, the battery can generate certain heat after working for a long time, and the battery can be burst when working in a continuous high-temperature environment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a lithium cell block with dustproof function.

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

the utility model relates to a lithium battery cap with dustproof function, which comprises a battery shell, a cap body, a first sealing ring, a second sealing ring, an upper cover, an insulating ring, an explosion-proof sheet, a bottom cover, an air vent and a connecting sheet, wherein one end of the battery shell is internally and slidably connected with the cap body, the junction of the cap body and the battery shell is fixedly connected with the first sealing ring, the upper end of the cap body is fixedly connected with the second sealing ring, the upper cover, the explosion-proof sheet and the insulating ring are sequentially and fixedly connected in the second sealing ring from outside to inside, a mounting groove is arranged in the insulating ring, the explosion-proof sheet is fixedly connected in the mounting groove, the center of the explosion-proof sheet is fixedly connected with a convex membrane, the lower end of the second sealing ring is fixedly connected with a fixed lantern ring in the cap body, and the bottom cover is fixedly connected, the bottom cover is characterized in that a connecting piece is fixedly connected to the center of the bottom cover, the connecting piece is of a convex structure, and the top end of the connecting piece is in contact connection with the top end of the convex membrane.

As a preferred technical scheme of the utility model, first sealing ring is the rubber material, the inboard fixed connection of first sealing ring is on block body lateral wall, the first sealing ring outside and battery case inner wall sliding connection.

As a preferred technical scheme of the utility model, upper cover outside fixed connection is in the second seal ring, upper cover central point puts outside arch.

As an optimal technical scheme of the utility model, battery case outside fixedly connected with one deck protection film, the protection film is corrosion-resistant plastic material.

As an optimized technical scheme of the utility model, protruding diaphragm is changeablely aluminium sheet material.

As a preferred technical scheme of the utility model, seted up four air vents, four in the connection piece the air vent uses the connection piece as central evenly distributed.

The utility model discloses the beneficial effect who reaches is: through increasing the effectual inside gas tightness that improves the battery of first sealing ring and second sealing ring, the effectual entering that prevents the dust has improved the life of battery, and explosion-proof construction can effectually improve the security of battery simultaneously.

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 structural diagram of a cross-sectional view of the tail of a lithium battery according to the present invention;

fig. 2 is a schematic structural view of the bottom cover of the present invention;

fig. 3 is a schematic structural diagram of the insulating ring of the present invention;

fig. 4 is a schematic structural view of the second sealing ring internal connection of the present invention.

In the figure: 1. a battery case; 2. a cap body; 3. a first seal ring; 4. a second seal ring; 5. an upper cover; 6. an insulating ring; 7. an explosion-proof sheet; 8. a raised diaphragm; 9. a fixed collar; 10. a bottom cover; 11. a vent hole; 12. a protective film; 13. connecting sheets; 14. and (4) mounting the groove.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Examples

As shown in fig. 1-4, the utility model provides a lithium battery cap with dustproof function, which comprises a battery shell 1, a cap body 2, a first sealing ring 3, a second sealing ring 4, an upper cover 5, an insulating ring 6, an explosion-proof sheet 7, a bottom cover 10, an air vent 11 and a connecting sheet 13, wherein the cap body 2 is connected with one end of the battery shell 1 in a sliding manner, the first sealing ring 3 is fixedly connected with the joint of the cap body 2 and the battery shell 1, the second sealing ring 4 is fixedly connected with the upper end of the cap body 2, the upper cover 5, the explosion-proof sheet 7 and the insulating ring 6 are fixedly connected with the second sealing ring 4 from outside to inside in sequence, a mounting groove 14 is arranged in the insulating ring 6, the explosion-proof sheet 7 is fixedly connected in the mounting groove 14, a convex diaphragm 8 is fixedly connected with the center of the explosion-proof sheet 7, a fixing lantern ring 9 is fixedly connected with the lower end of the, a bottom cover 10 is fixedly connected in the fixing sleeve ring 9, a connecting piece 13 is fixedly connected to the center of the bottom cover 10, the connecting piece 13 is of a protruding structure, the top end of the connecting piece 13 is in contact connection with the top end of the protruding diaphragm 8, dust is effectively prevented from entering the battery, the service life of the battery is prolonged, and meanwhile, the safety of the battery can be effectively improved due to the explosion-proof structure.

The outer side of the first sealing ring 3 is connected with the inner wall of the battery shell 1 in a sliding manner, the first sealing ring 3 not only ensures the air tightness in the battery body, but also facilitates the installation and the disassembly of the cap body 2, is more convenient to replace compared with a fixedly welded cap, saves cost, the outer side of the upper cover 5 is fixedly connected in the second sealing ring 4, the central position of the upper cover 5 protrudes outwards, an external circuit is better connected through the protrusion of the upper cover 5, the battery discharges, the outer side of the battery shell 1 is fixedly connected with a layer of protective film 12, the protective film 12 is made of corrosion-resistant plastic materials, the battery shell 1 is effectively protected from being corroded, a certain sealing effect is also achieved, the protruding diaphragm 8 is made of a deformable aluminum sheet material, the protruding diaphragm 8 is sunken under stress, the connection sheet is disconnected with the bottom cover 10, thereby realizing power-off and explosion prevention, four vent, the four vent holes 11 are uniformly distributed with the connecting sheet 13 as the center, so that the point electrolyte burst gas in the battery flows out through the vent holes 11.

Specifically, when the battery that leads to in the long-time use of battery generates heat and bursts, the inside electrolyte of battery case 1 can release high-pressure draught, air vent 11 through in the bottom 10 flows out, high-pressure draught can extrude the protruding diaphragm 8 of fixed connection at explosion-proof piece 7 central point to the one side of keeping away from bottom 10, make the protruding diaphragm 8 of fixed connection at explosion-proof piece 7 central point put and the connection piece 13 disconnection of fixed connection at bottom 10 central point put, make the inside outage of battery, the point electrolyte of battery case 1 inside will stop the reaction and release heat, thereby explosion-proof effect has been reached, simultaneously through increasing the inside gas tightness of first sealing ring 3 and the effectual inside gas tightness that has improved the battery of second sealing ring 4, the effectual entering that has prevented the dust, the life of battery has been improved.

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 may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lithium battery cap with the dustproof function is characterized by comprising a battery shell (1), a cap body (2), a first sealing ring (3), a second sealing ring (4), an upper cover (5), an insulating ring (6), an explosion-proof sheet (7), a bottom cover (10), an air vent (11) and a connecting sheet (13), wherein the cap body (2) is connected to one end of the battery shell (1) in a sliding manner, the first sealing ring (3) is fixedly connected to the joint of the cap body (2) and the battery shell (1), the second sealing ring (4) is fixedly connected to the inner upper end of the cap body (2), the upper cover (5), the explosion-proof sheet (7) and the insulating ring (6) are fixedly connected to the inner side of the second sealing ring (4) in sequence, a mounting groove (14) is formed in the insulating ring (6), and the explosion-proof sheet (7) is fixedly connected to the mounting groove (14), explosion-proof piece (7) central point puts protruding diaphragm (8) of fixedly connected with, second sealing ring (4) lower extreme just is located a fixed lantern ring (9) of fixedly connected with in block body (2), a bottom (10) of fixedly connected with in the fixed lantern ring (9), bottom (10) central point puts a fixedly connected with connection piece (13), connection piece (13) are protruding structure, the top and the protruding diaphragm (8) top contact of connection piece (13) are connected.

2. The lithium battery cap with the dustproof function according to claim 1, wherein the first sealing ring (3) is made of rubber, the inner side of the first sealing ring (3) is fixedly connected to the outer side wall of the cap body (2), and the outer side of the first sealing ring (3) is slidably connected with the inner wall of the battery shell (1).

3. The lithium battery cap with the dustproof function according to claim 1, wherein the outer side of the upper cover (5) is fixedly connected in the second sealing ring (4), and the center of the upper cover (5) protrudes outwards.

4. The lithium battery cap with the dustproof function according to claim 1, wherein a protective film (12) is fixedly connected to the outer side of the battery shell (1), and the protective film (12) is made of a corrosion-resistant plastic material.

5. The lithium battery cap with dustproof function according to claim 1, wherein the raised membrane (8) is made of a deformable aluminum sheet.

6. The lithium battery cap with the dustproof function according to claim 1, wherein four vent holes (11) are formed in the connecting piece (13), and the four vent holes (11) are uniformly distributed by taking the connecting piece (13) as a center.