CN217881690U

CN217881690U - Cover plate sealing structure and lithium battery

Info

Publication number: CN217881690U
Application number: CN202222022459.4U
Authority: CN
Inventors: 李�浩; 李团伟; 关志权; 张英
Original assignee: Jiangsu Tianhui Lithium Battery Co ltd
Current assignee: Jiangsu Tianhui Lithium Battery Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-22
Anticipated expiration: 2032-08-02

Abstract

The utility model provides a cover plate sealing structure and a lithium battery, relating to the technical field of lithium batteries, wherein the cover plate sealing structure comprises a cover plate main body and a pole, and a lower annular fixing groove is arranged on one side of a pole connecting plate facing to the cover plate main body; and a sealing ring is arranged in the lower annular fixing groove, the upper end of the sealing ring extends out of the lower annular fixing groove, and the sealing ring is sleeved on the pole main body. The utility model provides a be provided with down the annular fixed slot on apron seal structure's utmost point post connecting plate, the sealing washer can be fixed in annular fixed slot down, at utmost point post and the in-process of apron main part assembly like this, because the fixed of annular fixed slot down makes sealing washer non-deformable, and the sealing washer is difficult to take place the skew with the apron main part like this, makes the sealing washer can play sealed effect.

Description

Cover plate sealing structure and lithium battery

Technical Field

The utility model belongs to the technical field of the technique of lithium cell and specifically relates to a apron seal structure and lithium cell are related to.

Background

The sealing ring is sleeved on the pole column of the existing cover plate sealing structure of the lithium battery, and the sealing ring is easy to deflect when the cover plate is pressed, so that the pressing is not practical, and the problems of abnormal sealing and the like are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a apron seal structure and lithium cell to alleviate the apron pressure equipment in-process of present lithium cell, the sealing washer easily takes place the skew, causes sealed unusual technical problem.

In a first aspect, the utility model provides a cover plate sealing structure, which comprises a cover plate main body and a pole, wherein the pole comprises a pole main body and a pole connecting plate; the cover plate main body is provided with a mounting hole, the pole main body penetrates through the mounting hole, and the pole connecting plate is positioned at the lower end of the cover plate main body;

a lower annular fixing groove is formed in one side, facing the cover plate main body, of the pole connecting plate; and a sealing ring is arranged in the lower annular fixing groove, the upper end of the sealing ring extends out of the lower annular fixing groove, and the sealing ring is sleeved on the pole main body.

In an optional embodiment, the sealing ring is made of fluororubber; the sealing ring comprises a sealing ring main body and a sealing ring, the sealing ring is arranged in the lower annular fixing groove, and the sealing ring main body is located outside the lower annular fixing groove.

In an optional embodiment, a lower plastic is arranged at the lower end of the cover plate main body, a first protrusion is arranged on the lower plastic, the first protrusion enables a corresponding first groove to be formed below the lower plastic, and a lower through hole corresponding to the mounting hole is arranged in the first groove;

the pole connecting plate is rectangular and corresponds to the first groove of the lower plastic; when the pole body is installed in the installation hole, the pole body is embedded into the first groove.

In an optional embodiment, a second groove is disposed at a position of the cover plate main body corresponding to the first protrusion of the lower plastic.

In an optional embodiment, the lower end of the lower plastic is provided with a plurality of lower limiting protrusions, and the lower limiting protrusions are matched to limit the moving range of the adapter plate.

In an optional embodiment, an upper plastic is arranged at the upper end of the cover plate main body, and an upper through hole corresponding to the mounting hole is formed in the upper plastic;

the side of the upper end face of the cover plate main body, which is provided with the mounting hole, is provided with a first tooth-shaped structure, and the upper plastic is provided with a second tooth-shaped structure capable of being embedded with the first tooth-shaped structure.

In an optional embodiment, a third tooth-shaped structure is arranged in the circumferential direction of the pole body, a fourth tooth-shaped structure is arranged in the upper through hole, and the third tooth-shaped structure can be embedded in the fourth tooth-shaped structure.

In an optional embodiment, a separation-preventing groove is formed in the circumferential direction of the pole body, and the third tooth-shaped structure is arranged in the separation-preventing groove.

In an optional embodiment, the cover plate main body is further provided with an explosion-proof valve and a liquid injection hole.

The utility model provides a be provided with down the annular fixed slot on apron seal structure's utmost point post connecting plate, the sealing washer can be fixed in annular fixed slot down, at utmost point post and the in-process of apron main part assembly like this, because the fixed of annular fixed slot down makes sealing washer non-deformable, and the sealing washer is difficult to take place the skew with the apron main part like this, makes the sealing washer can play sealed effect.

In a second aspect, the present invention provides a lithium battery including the cover plate sealing structure of any one of the foregoing embodiments.

The utility model also provides a lithium cell, this lithium cell adopt foretell apron seal structure to have all beneficial effects of apron seal structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a cover plate sealing structure provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view illustrating the connection between the post and the sealing ring of the sealing structure of the cover plate shown in FIG. 1;

FIG. 3 is a schematic structural diagram of the cover plate sealing structure shown in FIG. 1, in which the terminal post and the sealing ring are connected at another angle;

FIG. 4 is a schematic structural view of a pole of the cover plate sealing structure shown in FIG. 1;

FIG. 5 is a schematic structural view of a cover plate body of the cover plate sealing structure shown in FIG. 1;

FIG. 6 is a schematic view of an alternate angle of the cover plate body of the cover plate sealing arrangement shown in FIG. 1;

FIG. 7 is a structural diagram of an upper plastic of the cover plate sealing structure shown in FIG. 1;

FIG. 8 is a structural view of the lower plastic of the cover plate sealing structure shown in FIG. 1;

FIG. 9 is a structural view of another angle of the lower plastic of the cover plate sealing structure shown in FIG. 1;

fig. 10 is a schematic structural view of a packing of the cover plate sealing structure shown in fig. 1.

Icon: 100-discharging plastic; 101-lower perforation; 102-a lower limiting projection; 103-a first groove; 104-a first protrusion; 200-pole; 201-pole body; 2011-anticreep groove; 2012-a third tooth form construction; 202-pole connecting plate; 203-lower annular fixing groove; 300-coating plastic; 301-a second tooth form; 302-fourth tooth form construction; 303-perforating; 400-a cover plate body; 401-mounting holes; 402-a first tooth form; 403-a second groove; 500-liquid injection hole; 600-an explosion-proof valve; 700-sealing ring; 701-a seal ring body; 702-a seal ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

Examples

Referring to fig. 1 to 10, the present invention provides a cover plate sealing structure, which includes a cover plate main body 400 and a pole 200, wherein the pole 200 includes a pole main body 201 and a pole connecting plate 202; the cover plate main body 400 is provided with a mounting hole 401, the post main body 201 is arranged in the mounting hole 401 in a penetrating manner, and the post connecting plate 202 is positioned at the lower end of the cover plate main body 400;

a lower annular fixing groove 203 is formed in one side of the pole connecting plate 202 facing the cover plate main body 400; a sealing ring 700 is arranged in the lower annular fixing groove 203, the upper end of the sealing ring 700 extends out of the lower annular fixing groove 203, and the sealing ring 700 is sleeved on the pole main body 201.

In some embodiments, the cover body 400 is provided with a mounting hole 401, and two poles 200 are required to be provided on the cover body 400, that is, two mounting holes 401 are provided on the cover body 400.

The pole body 201 of the pole 200 is arranged on the pole connecting plate 202, a lower annular sealing groove is arranged on the pole connecting plate 202, and a sealing ring 700 sleeved on the pole body 201 can be arranged in the lower annular sealing groove; in the process of inserting the pole body 201 into the mounting hole 401, the sealing ring 700 is fixed in the lower annular sealing groove, and the sealing ring 700 is not easy to deform, namely when the pole body 201 is assembled on the cover plate body 400, the sealing ring 700 is not deformed, so that the sealing effectiveness of the sealing ring 700 is ensured; and further ensure that the seal ring 700 can seal the gap between the pole body 201 and the cover plate body 400.

Referring to fig. 10, in an alternative embodiment, the sealing ring 700 is made of fluororubber; the sealing ring 700 comprises a sealing ring main body 701 and a sealing ring 702, the sealing ring 702 is arranged in the lower annular fixing groove 203, and the sealing ring main body 701 is positioned outside the lower annular fixing groove 203. The sealing ring main body 701 is of an existing structure, a sealing ring 702 is arranged on the sealing ring main body 701, and the sealing ring 702 can be installed in a matching manner with the lower annular fixing groove 203, so that the shape of the sealing ring 702 is limited by the lower annular fixing groove 203, the shape of the sealing ring main body 701 is further limited, the sealing ring 700 is not prone to deformation in the assembling process, and the sealing performance is guaranteed; the sealing ring 702 protrudes 701mm-2mm from the sealing ring main body generally; the lower annular fixing groove 203 is a groove with the depth of 1mm-2 mm.

The seal ring 700 is typically made of Viton GF-200S (Viton GF-200S) which is black.

Referring to fig. 8 and 9, in an alternative embodiment, a lower plastic 100 is disposed at a lower end of the cover plate main body 400, a first protrusion 104 is disposed on the lower plastic 100, the first protrusion 104 forms a corresponding first groove 103 below the lower plastic 100, and a lower through hole 101 corresponding to the mounting hole 401 is disposed in the first groove 103;

the pole connecting plate 202 is rectangular, and the pole connecting plate 202 corresponds to the first groove 103 of the lower plastic 100; when the pole body 201 is installed in the installation hole 401, the pole body 201 is embedded into the first groove 103.

In some embodiments, the lower end of the cover plate main body 400 has a lower plastic 100, the lower plastic 100 has a first protrusion 104 protruding toward the cover plate main body 400, and a first groove 103 corresponding to the first protrusion 104 is formed on a side of the lower plastic 100 away from the cover plate main body 400, the pole connecting plate 202 is rectangular, and the first groove 103 is also rectangular; the post body 201 is inserted into the lower through hole 101 of the lower plastic 100 and the mounting hole 401 of the cover body 400 in sequence, so that the post connecting plate 202 is inserted into the first groove 103 of the lower plastic 100. The first groove 103 and the post connecting plate 202 are generally rectangular.

Referring to fig. 5 and 6, in an alternative embodiment, a second groove 403 is formed in the cover plate body 400 at a position corresponding to the first protrusion 104 of the lower plastic 100.

In order to make the lower plastic 100 be able to be better attached to the cover plate main body 400, the cover plate main body 400 is provided with a second groove 403, the first protrusion 104 of the lower plastic 100 can be inserted into the second groove 403, and then the lower plastic 100 is able to be better attached to the cover plate main body 400.

Referring to fig. 8, in an alternative embodiment, a plurality of lower limiting protrusions 102 are disposed at a lower end of the lower plastic 100, and the lower limiting protrusions 102 are used to limit a moving range of the interposer.

The lower end of the lower plastic 100 is provided with a plurality of lower limiting protrusions 102, the lower limiting protrusions 102 enclose a limiting area, and the adapter plate of the lithium battery is located in the limiting area, so that the moving range of the adapter plate can be limited.

Referring to fig. 1 and 7, in an alternative embodiment, an upper plastic 300 is disposed at an upper end of the cover plate main body 400, and an upper through hole 303 corresponding to the mounting hole 401 is disposed on the upper plastic 300;

a first tooth structure 402 is provided on the upper end surface of the cover plate body 400 on the periphery of the mounting hole 401, and a second tooth structure 301 capable of being fitted to the first tooth structure 402 is provided on the upper plastic 300.

Two upper plastics 300 are arranged on the cover plate main body 400, each upper plastic 300 corresponds to one mounting hole 401, an upper through hole 303 corresponding to the mounting hole 401 is arranged on the upper plastic 300, and the pole post main body 201 can extend upwards from the upper through hole 303.

The periphery of the mounting hole 401 is provided with a plurality of first tooth-shaped structures 402, one side of the upper plastic 300 facing the mounting hole 401 is provided with a plurality of second tooth-shaped structures 301, the first tooth-shaped structures 402 and the second tooth-shaped structures 301 can be embedded, so that the upper plastic 300 is connected with the cover plate main body 400, and the first tooth-shaped structures 402 and the second tooth-shaped structures 301 are connected in a matched manner, so that the torsion force of the upper plastic part and the cover plate main body 400 can be improved, and the stability of the cover plate sealing structure is improved.

Referring to fig. 2, 3, 4, 5 and 7, in an alternative embodiment, a third castellated structure 2012 is disposed in a circumferential direction of the pole body 201, a fourth castellated structure 302 is disposed in the upper through hole 303, and the third castellated structure 2012 can be fitted in the fourth castellated structure 302.

In an alternative embodiment, the cover plate main body 400 is further provided with an explosion-proof valve 600 and a liquid injection hole 500.

In an alternative embodiment, the pole body 201 is provided with a separation preventing groove 2011 in the circumferential direction, and the third tooth structure 2012 is arranged in the separation preventing groove 2011.

In some embodiments, a third castellated structure 2012 is provided on the periphery of the post body 201, the third castellated structure 2012 is spaced from the top end of the post body 201, a fourth castellated structure 302 is provided on the sidewall of the upper bore 303, and the third castellated structure 2012 and the fourth castellated structure 302 can be engaged.

When the upper plastic 300 is injected, the plastic is filled in the third tooth-shaped mechanism to form a fourth tooth-shaped structure 302, and further the mutual rotation between the upper plastic 300 and the pole body 201 is realized; and third profile of tooth structure 2012 is located anticreep groove 2011, can carry out fore-and-aft support to utmost point post 200 after the plastic solidification, prevents that it from sinking, can play the effect of stabilizing plastic 300 and utmost point post 200 like this.

Two poles 200, a positive pole 200 and a negative pole 200 are generally arranged on the cover plate body 400, and a mark matched with the corresponding pole 200 is arranged on the upper plastic 300.

The utility model provides a be provided with down annular fixed slot 203 on apron seal structure's utmost point post connecting plate 202, sealing washer 700 can be fixed in annular fixed slot 203 down, like this at utmost point post 200 with the in-process of lapping main part 400 assembly, because the fixed of annular fixed slot 203 down, make sealing washer 700 non-deformable, sealing washer 700 is difficult for taking place the skew with lapping main part 400 like this, make sealing washer 700 can play sealed effect.

The utility model provides a lithium battery, including any one of the aforesaid embodiment apron seal structure.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The cover plate sealing structure is characterized by comprising a cover plate main body (400) and a pole (200), wherein the pole (200) comprises a pole main body (201) and a pole connecting plate (202); the cover plate main body (400) is provided with a mounting hole (401), the pole main body (201) penetrates through the mounting hole (401), and the pole connecting plate (202) is positioned at the lower end of the cover plate main body (400);

a lower annular fixing groove (203) is formed in one side, facing the cover plate main body (400), of the pole connecting plate (202); a sealing ring (700) is arranged in the lower annular fixing groove (203), the upper end of the sealing ring (700) extends out of the lower annular fixing groove (203), and the sealing ring (700) is sleeved on the pole main body (201).

2. The cover plate sealing structure according to claim 1, wherein the sealing ring (700) is made of fluororubber; the sealing ring (700) comprises a sealing ring main body (701) and a sealing ring (702), the sealing ring (702) is arranged in the lower annular fixing groove (203), and the sealing ring main body (701) is located outside the lower annular fixing groove (203).

3. The cover plate sealing structure according to claim 2, wherein a lower plastic (100) is arranged at the lower end of the cover plate main body (400), a first protrusion (104) is arranged on the lower plastic (100), the first protrusion (104) enables a corresponding first groove (103) to be formed below the lower plastic (100), and a lower through hole (101) corresponding to the mounting hole (401) is arranged in the first groove (103);

the pole connecting plate (202) is rectangular, and the pole connecting plate (202) corresponds to the first groove (103) of the lower plastic (100); when the pole body (201) is installed in the installation hole (401), the pole body (201) is embedded into the first groove (103).

4. The cover plate sealing structure according to claim 3, wherein a second groove (403) is provided in a position of the cover plate main body (400) corresponding to the first protrusion (104) of the lower plastic (100).

5. The cover plate sealing structure according to claim 3, wherein a plurality of lower limiting protrusions (102) are arranged at the lower end of the lower plastic (100), and the lower limiting protrusions (102) are matched to limit the moving range of the adapter plate.

6. The cover plate sealing structure according to claim 1, wherein an upper plastic (300) is disposed at an upper end of the cover plate main body (400), and an upper through hole (303) corresponding to the mounting hole (401) is disposed on the upper plastic (300);

a first tooth-shaped structure (402) is arranged on the periphery of the mounting hole (401) on the upper end face of the cover plate main body (400), and a second tooth-shaped structure (301) capable of being embedded with the first tooth-shaped structure (402) is arranged on the upper plastic (300).

7. The cover plate sealing structure according to claim 6, characterized in that a third tooth-shaped structure (2012) is arranged in the circumferential direction of the pole body (201), a fourth tooth-shaped structure (302) is arranged in the upper through hole (303), and the third tooth-shaped structure (2012) can be fitted in the fourth tooth-shaped structure (302).

8. The cover plate sealing structure according to claim 7, characterized in that a circumferential direction of the pole body (201) is provided with a slip-off preventing groove (2011), and the third tooth-shaped structure (2012) is arranged in the slip-off preventing groove (2011).

9. The cover plate sealing structure according to claim 1, wherein an explosion-proof valve (600) and a liquid injection hole (500) are further provided on the cover plate main body (400).

10. A lithium battery comprising the lid sealing structure according to any one of claims 1 to 9.