CN213459973U

CN213459973U - Lithium ion battery with waterproof function reinforced at joint

Info

Publication number: CN213459973U
Application number: CN202022817731.9U
Authority: CN
Inventors: 许长兵; 吴训交
Original assignee: Shenzhen Guoju Energy Co ltd
Current assignee: Shenzhen Guoju Energy Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-06-15
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a lithium ion battery with a joint enhanced waterproof function, which comprises a lithium battery main body, a lower shell and an upper shell, wherein the lithium battery main body is fixedly arranged in the lower shell, a sealing cover is fixedly sleeved on the upper part of the lithium battery main body, a first sealing ring is arranged in the two sealing covers, the first sealing ring is attached to the upper part of the lithium battery main body, and positive and negative electrode posts on the upper part of the lithium battery main body penetrate through the sealing covers; through the design of first sealing washer, the second sealing washer, support ring and locking bolt isotructure, strengthen sealedly through first sealing washer and second sealing washer to the upper portion junction of lithium cell main part and lithium cell casing's junction respectively, thereby guarantee lithium ion battery's whole leakproofness, go up the casing and lock through locking bolt with lower casing, compress tightly the sealing washer of junction through locking bolt after last casing lock down, thereby further guarantee the holistic waterproof sealing performance of lithium ion battery.

Description

Lithium ion battery with waterproof function reinforced at joint

Technical Field

The utility model relates to a lithium ion battery technical field specifically is a lithium ion battery of waterproof function is strengthened to junction.

Background

Lithium batteries are divided into lithium batteries and lithium ion batteries, and lithium ion batteries are commonly called as lithium batteries in mobile phones and notebook computers, and generally, the batteries adopt materials containing lithium elements as electrodes, which are representative of modern high-performance batteries, while real lithium batteries are rarely applied to daily electronic products due to high danger. A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. In the process of charging and discharging, Li + is inserted and extracted back and forth between the two electrodes; during charging, Li + is extracted from the positive electrode, and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state, whereas during discharging, the reverse is true. In the prior art, a waterproof structure is additionally arranged at the joint of a lithium battery main body of equipment in the using process of a lithium ion battery, so that water is prevented from entering the inside of the battery in the using process, but the water prevention at the joint of a lithium battery shell is neglected, and then the possibility of water entering also exists at the joint of a shell, so that the lithium ion battery with the joint for strengthening the waterproof function is required to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium ion battery of waterproof function is strengthened to junction, through first sealing washer, the second sealing washer, the design of support ring and locking bolt isotructure, strengthen sealed with lithium cell casing's junction through first sealing washer and second sealing washer to lithium cell main part's upper portion junction respectively, thereby guarantee lithium ion battery's whole leakproofness, go up the casing and lock through locking bolt with lower casing, compress tightly the sealing washer of junction through locking bolt after last casing lock down, thereby further guarantee the holistic waterproof sealing performance of lithium ion battery, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a lithium ion battery with a joint with a waterproof function enhanced comprises a lithium battery main body, a lower shell and an upper shell, wherein the lithium battery main body is fixedly arranged in the lower shell, a sealing cover is fixedly sleeved on the upper part of the lithium battery main body, a first sealing ring is arranged in the two sealing covers, the first sealing ring is attached to the upper part of the lithium battery main body, and positive and negative electrode columns on the upper part of the lithium battery main body penetrate through the sealing cover;

the improved structure of the shell comprises a lower shell and an upper shell, and is characterized in that a fixed edge is fixedly connected to the upper end of the side part of the lower shell, a flange is integrally formed on the side part of the upper shell, the fixed edge and the flange are locked and installed through a locking bolt, a second sealing ring is fixedly connected to the bottom of the upper shell, a support ring is integrally formed on the upper end of the inner side wall of the lower shell, and the second sealing ring is attached to the upper portion of the.

Preferably, the sealing cover is provided with two groups of through holes, and the positive and negative electrode columns penetrate through the two groups of through holes and are inserted into the sealing cover.

Preferably, the upper parts of the two groups of through holes of the sealing cover are provided with fixing sleeves, the fixing sleeves are sleeved on the positive and negative electrode columns, and the positive and negative electrode columns are positioned and inserted in the sealing cover through the fixing sleeves.

Preferably, the lateral part of lithium cell main part fixedly connected with spacing fixed plate, the interior bottom of casing is provided with the supporting pad down, the supporting pad supports in lithium cell main part's bottom.

Preferably, the fixing edge and the flanging are both provided with bolt holes, and the locking bolt is fixedly installed on the fixing edge and the flanging through the bolt holes.

Preferably, the bottom of the bolt hole of the fixing edge is a countersunk hole, and the bolt head of the locking bolt is located in the countersunk hole.

Preferably, a support spring is sleeved on the screw rod of the locking bolt, one end of the support spring abuts against the flanging, and the other end of the support spring abuts against the fixing edge.

Preferably, the lower shell is provided with two groups of wiring holes for wiring of the positive and negative electrode posts, and sealing sleeves are fixedly adhered inside the wiring holes.

Preferably, the bottom of the upper shell is integrally formed with a fastening groove, and the upper portion of the lower shell is located in the fastening groove of the upper shell.

Preferably, the first sealing ring and the second sealing ring are both polyurethane rubber sealing rings.

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

through the design of first sealing washer, the second sealing washer, support ring and locking bolt isotructure, strengthen sealedly through first sealing washer and second sealing washer to the upper portion junction of lithium cell main part and lithium cell casing's junction respectively, thereby guarantee lithium ion battery's whole leakproofness, go up the casing and lock through locking bolt with lower casing, compress tightly the sealing washer of junction through locking bolt after last casing lock down, thereby further guarantee the holistic waterproof sealing performance of lithium ion battery.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

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

fig. 2 is a schematic structural view of the upper housing of the present invention;

fig. 3 is a schematic view of the upper structure of the upper housing of the present invention;

fig. 4 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention.

In the figure: 1. a lithium battery main body; 2. a lower housing; 3. an upper housing; 4. a limiting fixing plate; 5. a support pad; 6. a sealing cover; 7. positive and negative electrode columns; 8. a first seal ring; 9. sealing sleeves; 10. buckling the groove; 11. locking the bolt; 12. a support spring; 13. fixing a sleeve; 14. a second seal ring; 15. a support ring; 16. flanging; 17. a wiring hole; 18. bolt holes; 19. and fixing the edge.

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.

Referring to fig. 1-4, the present invention provides a technical solution:

a lithium ion battery with a joint enhanced waterproof function comprises a lithium battery main body 1, a lower shell 2 and an upper shell 3, wherein the lithium battery main body 1 is fixedly installed in the lower shell 2, a sealing cover 6 is fixedly sleeved on the upper portion of the lithium battery main body 1, first sealing rings 8 are arranged in the two fixed bottoms of the sealing cover 6, the first sealing rings 8 are attached to the upper portion of the lithium battery main body 1, and positive and negative electrode columns 7 on the upper portion of the lithium battery main body 1 penetrate through the sealing cover 6;

fixed limit 19 of lateral part upper end fixedly connected with of casing 2 down, the lateral part integrated into one piece of going up casing 3 has turn-ups 16, and fixed limit 19 passes through locking bolt 11 locking installation with turn-ups 16, goes up the bottom fixedly connected with second sealing washer 14 of casing 3, and the inside wall upper end integrated into one piece of casing 2 down has support ring 15, and second sealing washer 14 laminates in the upper portion of support ring 15.

Two groups of through holes are formed in the sealing cover 6, and the positive electrode column and the negative electrode column 7 penetrate through the two groups of through holes and are inserted into the sealing cover 6. The upper parts of the two groups of through holes of the sealing cover 6 are provided with fixing sleeves 13, the fixing sleeves 13 are sleeved on the positive and negative electrode columns 7, and the positive and negative electrode columns 7 are positioned and inserted in the sealing cover 6 through the fixing sleeves 13.

The spacing fixed plate 4 of lateral part fixedly connected with of lithium cell main part 1, the interior bottom of inferior valve casing 2 is provided with supporting pad 5, and supporting pad 5 supports in the bottom of lithium cell main part 1. Bolt holes 18 are formed in the fixing edge 19 and the turned-over edge 16, and the locking bolt 11 is fixedly mounted on the fixing edge 19 and the turned-over edge 16 through the bolt holes 18.

The bottom of the bolt hole 18 of the fixing edge 19 is provided with a countersunk hole in which the bolt head of the locking bolt 11 is located. The screw of the locking bolt 11 is sleeved with a supporting spring 12, one end of the supporting spring 12 abuts against the flange 16, and the other end of the supporting spring 12 abuts against the fixing edge 19.

Two groups of wiring holes 17 used for wiring of the positive and negative electrode columns 7 are formed in the lower shell 2, a sealing sleeve 9 is fixedly adhered inside each wiring hole, a buckling groove 10 is integrally formed in the bottom of the upper shell 3, the upper portion of the lower shell 2 is located in the buckling groove 10 of the upper shell 3, and the first sealing ring 8 and the second sealing ring 14 are both polyurethane rubber sealing rings.

The working principle is as follows: through first sealing washer 8, second sealing washer 14, the design of support ring 15 and locking bolt 11 isotructure, strengthen sealedly through first sealing washer 8 and second sealing washer 14 to the upper portion junction of lithium cell main part 1 and lithium cell casing's junction respectively, thereby guarantee lithium ion battery's overall sealing nature, go up casing 3 and casing 2 down and lock through locking bolt 11, compress tightly the sealing washer of junction through locking bolt 11 after last casing lock down, thereby further guarantee the holistic waterproof sealing performance of lithium ion battery.

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 lithium ion battery of waterproof function is strengthened to junction, includes lithium cell main part (1), casing (2) and last casing (3) down, its characterized in that: the lithium battery main body (1) is fixedly installed in the lower shell (2), a sealing cover (6) is fixedly sleeved on the upper portion of the lithium battery main body (1), a first sealing ring (8) is arranged in the bottom of the sealing cover (6), the first sealing ring (8) is attached to the upper portion of the lithium battery main body (1), and a positive electrode column and a negative electrode column (7) on the upper portion of the lithium battery main body (1) penetrate through the sealing cover (6);

fixed limit (19) of lateral part upper end fixedly connected with of casing (2) down, the lateral part integrated into one piece of going up casing (3) has turn-ups (16), fixed limit (19) and turn-ups (16) are through locking bolt (11) locking installation, the bottom fixedly connected with second sealing washer (14) of going up casing (3), the inside wall upper end integrated into one piece of casing (2) has support ring (15) down, second sealing washer (14) laminate in the upper portion of support ring (15).

2. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: two groups of through holes are formed in the sealing cover (6), and the positive electrode column and the negative electrode column (7) penetrate through the two groups of through holes and are inserted into the sealing cover (6).

3. The lithium ion battery with the waterproof function reinforced at the joint according to claim 2, wherein: the upper parts of the two groups of through holes of the sealing cover (6) are provided with fixing sleeves (13), the fixing sleeves (13) are sleeved on the positive and negative electrode columns (7), and the positive and negative electrode columns (7) are positioned and inserted in the sealing cover (6) through the fixing sleeves (13).

4. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the lithium battery pack is characterized in that a limiting fixing plate (4) is fixedly connected to the side of the lithium battery main body (1), a supporting pad (5) is arranged at the inner bottom of the lower shell (2), and the supporting pad (5) is supported at the bottom of the lithium battery main body (1).

5. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: bolt holes (18) are formed in the fixing edge (19) and the turned edge (16), and the locking bolt (11) is fixedly mounted on the fixing edge (19) and the turned edge (16) through the bolt holes (18).

6. The lithium ion battery with the waterproof function strengthened at the joint according to claim 5, is characterized in that: the bottom of a bolt hole (18) of the fixing edge (19) is a countersunk hole, and a bolt head of the locking bolt (11) is located in the countersunk hole.

7. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the locking bolt is characterized in that a support spring (12) is sleeved on a screw rod of the locking bolt (11), one end of the support spring (12) abuts against the flanging (16), and the other end of the support spring (12) abuts against the fixed edge (19).

8. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: two groups of wiring holes (17) used for wiring of the positive and negative electrode columns (7) are formed in the lower shell (2), and a sealing sleeve (9) is fixedly adhered inside each wiring hole.

9. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the bottom of the upper shell (3) is integrally formed with a buckling groove (10), and the upper portion of the lower shell (2) is located in the buckling groove (10) of the upper shell (3).

10. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the first sealing ring (8) and the second sealing ring (14) are both polyurethane rubber sealing rings.