CN212303736U

CN212303736U - A dysmorphism sealing device for soft packet of lithium ion battery

Info

Publication number: CN212303736U
Application number: CN202021095886.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenzhen Topband Lithium Battery Co ltd
Current assignee: Shenzhen Topband Lithium Battery Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-01-05
Anticipated expiration: 2030-06-12

Abstract

The utility model relates to a special-shaped sealing and welding device for soft package lithium ion batteries, which comprises an upper die head, a lower die head which is matched with the upper die head and can be detachably connected with the upper die head, and a connecting component which is used for connecting the upper die head and the lower die head; the upper die end enclosure is of a hollow structure, and a special-shaped first accommodating cavity for accommodating the soft package lithium ion battery is arranged on the inner side of the upper die end enclosure; the lower die end enclosure comprises a hollow structure, and a second special-shaped accommodating cavity for accommodating the soft package lithium ion battery is arranged on the inner side of the lower die end enclosure; the first accommodating cavity and the second accommodating cavity are communicated with each other. The special-shaped sealing and welding device for the soft package lithium ion battery has the advantages of simple structure, low manufacturing cost and good packaging effect.

Description

A dysmorphism sealing device for soft packet of lithium ion battery

Technical Field

The utility model relates to a lithium ion battery makes the field, and more specifically says, relates to a dysmorphism sealing device for soft packet of lithium ion battery.

Background

In the production process of the lithium ion polymer battery, the heat packaging technology is used as a production flow, and plays a decisive role in the safety performance and the main performance index of the battery. The heat-sealing technology used by the current soft-packing lithium ion battery is divided into two types: one is a silica gel end socket used for soft packaging; the other type is a hard packaging copper alloy limiting slotted seal head. The existing hard-packaging copper alloy limiting slotted seal head has great difference due to the fact that field-used equipment is large in difference, and the seal heads with the upper and lower slots are required to be high in installation and positioning accuracy, so that great difficulty is caused to the installation of the existing seal head. Therefore, the existing sealing device has the defects of difficult manufacture and inconvenient use. In addition, the soft package lithium ion battery manufactured by the existing sealing and welding device is generally a quadrilateral soft package battery, and the quadrilateral soft package battery and a battery box body with special structures cannot fully utilize the space in the assembling process, so that the space waste is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in that, a modified is used for soft packet of lithium ion battery's dysmorphism sealing device is provided.

The utility model provides a technical scheme that its technical problem adopted is: the special-shaped sealing and welding device for the soft package lithium ion battery is constructed and comprises an upper die sealing head, a lower die sealing head which is matched with the upper die sealing head and detachably connected with the upper die sealing head, and a connecting assembly which is connected with the upper die sealing head and the lower die sealing head;

the upper die end enclosure is of a hollow structure, and a special-shaped first accommodating cavity for accommodating the soft package lithium ion battery is arranged on the inner side of the upper die end enclosure;

the lower die end enclosure comprises a hollow structure, and a second special-shaped accommodating cavity for accommodating the soft package lithium ion battery is arranged on the inner side of the lower die end enclosure; the first accommodating cavity and the second accommodating cavity are communicated with each other.

Preferably, the upper die end enclosure and the lower die end enclosure are both special-shaped;

the first accommodating cavity and the second accommodating cavity are matched in shape and size.

Preferably, the upper die end enclosure comprises a first end enclosure column in a special-shaped column shape; the first head sealing column is of a hollow structure with two through ends; the first accommodating cavity is formed in the first head sealing column;

and/or the lower die end enclosure comprises a second end enclosure column in a special-shaped column shape; the second head sealing column is of a hollow structure with two through ends; the second accommodating cavity is formed in the second head sealing column.

Preferably, the upper die head further comprises a first positioning table arranged at the upper end of the first head column;

the first positioning table is in a special-shaped annular shape, and the cross section size of the first positioning table is larger than that of the first head sealing column;

and/or the lower die end socket also comprises a second positioning table arranged at the lower end of the second end socket column;

the second positioning table is in a special-shaped annular shape, and the cross section size of the second positioning table is larger than that of the second head sealing column.

Preferably, the first positioning table is provided with a first connecting positioning hole with two ends penetrating through;

a second connecting positioning hole with two through ends is formed in the second positioning table;

the first connecting positioning hole and the second connecting positioning hole are correspondingly arranged;

the connecting assembly comprises a bolt which penetrates through the first connecting positioning hole and the second connecting positioning hole, and a nut which is sleeved on the bolt and connects the upper die end enclosure with the lower die end enclosure.

Preferably, the first connecting positioning hole is a round hole, a square hole or a strip-shaped hole.

Preferably, the first positioning table and the first head column are integrally formed;

and/or the second positioning table and the second sealing head column are integrally formed.

Preferably, the upper die end enclosure and/or the lower die end enclosure are made of metal.

Preferably, the inner surface and/or the outer surface of the upper die head and/or the lower die head is coated with a metal coating.

Preferably, the profile comprises a heart shape, a flower shape, a pentagram shape, a butterfly shape.

Implement the utility model discloses a special-shaped sealing device for soft packet of lithium ion battery has following beneficial effect: this a dysmorphism sealing and welding device for soft packet of lithium ion battery can realize soft packet of lithium ion battery's encapsulation through the cooperation of last mould head and lower mould head, is special-shaped first holding chamber through the inboard setting of this last mould head, sets up in the lower mould head to be special-shaped second holding chamber to can be so that the soft packet of lithium ion battery who produces be special-shaped. The special-shaped sealing and welding device for the soft package lithium ion battery has the advantages of simple structure, low manufacturing cost and good packaging effect.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural diagram of a special-shaped sealing and welding device for a soft package lithium ion battery according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a special-shaped sealing and welding device for a soft package lithium ion battery according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a special-shaped sealing and welding device for a soft package lithium ion battery according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a special-shaped sealing and welding device for a soft package lithium ion battery according to a fourth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a special-shaped sealing and welding device for a soft package lithium ion battery according to a fifth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a special-shaped sealing device for a soft package lithium ion battery according to a sixth embodiment of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows the utility model is used for soft packet of lithium ion battery's dysmorphism sealing device. This a dysmorphism sealing device for soft packet of lithium ion battery can be used to lithium ion battery's sealing to can form and be special-shaped soft packet of lithium ion battery, thereby can with be special-shaped battery box phase-match, avoid causing the space extravagant. The special-shaped sealing and welding device for the soft package lithium ion battery has the advantages of simple structure, low manufacturing cost and good packaging effect. The special-shaped sealing and welding device can be used by various devices, can be produced integrally, and can improve the product quality, the working efficiency and the production stability.

As shown in fig. 1, in this embodiment, the special-shaped sealing and welding device for the soft package lithium ion battery may include an upper mold head 10, a lower mold head 20, and a connecting assembly. Should go up mould head 10 and can cooperate with this lower mould head 20 in order to advance the seal welding to soft packet of lithium ion battery, should go up mould head 10 and this lower mould head 20 can be for dismantling the connection to in this soft packet of lithium ion battery carries out the drawing of patterns. The connecting assembly can be used for connecting the upper die seal head 10 and the lower die seal head 20.

Further, in the present embodiment, the upper mold end enclosure 10 may have a hollow structure, and the upper mold end enclosure 10 may have a special shape, specifically, it may have a heart shape. It is understood that in other embodiments, the upper die seal head 10 may not be limited to being heart-shaped. In other embodiments, the upper mold head 10 may also have a butterfly, flower, or pentagram shape. In this embodiment, the upper mold head 10 may be integrally formed into a heart shape. Of course, it is understood that in other embodiments, the upper mold head 10 may be formed by splicing two cylindrical structures with semicircular cross sections to form a heart shape.

Further, in the present embodiment, the inner surface and the outer surface of the upper die head 10 may be coated with a metal coating. In this embodiment, the upper die head 10 may be a ceramic body or a plastic body. The metal coating may be applied to the inner and outer surfaces of the ceramic or plastic body, and in particular, in the present embodiment, the metal coating may be a copper layer. Of course, it is understood that in other embodiments, the metal coating may be applied only to the inner or outer surface of the upper mold head 10. Of course, it is understood that in other embodiments, the upper mold head 10 may be entirely made of metal.

Further, in the present embodiment, the upper mold head 10 may include a first head column 11 and a first positioning table 12. The first capping post 11 may be used to encapsulate the soft-packed lithium ion battery. The first positioning platform 12 may be disposed at one end of the first head sealing pillar 11, and specifically, it may be disposed at an upper end of the first head sealing pillar 11, which may be used for assembling the connecting assembly.

In this embodiment, the first capping column 11 may have a special-shaped column shape, and the cross-section of the first capping column 11 may have a heart shape. The first closing post 11 may be a hollow structure with two ends penetrating through, and a first receiving cavity 111 may be formed inside the first closing post. The first accommodating cavity 111 can be used for accommodating the soft package lithium ion battery and shaping the soft package lithium ion battery in a special shape. In the present embodiment, the first receiving cavity 111 may have a special shape, and specifically, in the present embodiment, the first receiving cavity 111 may have a heart shape. In this embodiment, an opening may be disposed on one side of the first capping column 11, and the opening may be communicated with the first accommodating cavity 111, which may facilitate the installation of the soft package lithium ion battery.

Further, in the present embodiment, the first positioning stage 12 may be integrally formed with the first cap post 11. Specifically, in some embodiments, the first positioning stage 12 and the first head post 11 may be integrally formed by casting or injection molding. In the present embodiment, the first positioning table 12 may have a shape of a heteromorphic ring, and particularly, it may have a shape of a heart ring. The first positioning stage 12 may have a cross-sectional dimension larger than that of the first capping column 11, and may be disposed to protrude from an outer sidewall of the first capping column 11 in a thickness direction of the first capping column 11.

In this embodiment, the first positioning table 12 can be provided with a first connecting positioning hole 121. The number of the first connecting positioning holes 121 can be plural, the plurality of first connecting positioning holes 121 can be arranged along the circumferential direction of the first positioning stage 12 at intervals, each first connecting positioning hole 121 penetrates through the first positioning stage 12 along the thickness direction of the first positioning stage 12, and each first connecting positioning hole 121 has a structure with two through ends. The first connecting positioning hole 121 can be used for assembling the connecting component. In the present embodiment, the first connecting positioning hole 121 may be a bar-shaped hole, and it is understood that in other embodiments, the first connecting positioning hole 121 may be a square hole, a round hole, or a special-shaped hole.

Further, in the present embodiment, the lower mold head 20 may have a hollow structure, and the lower mold head 20 may have a special shape, specifically, it may have a heart shape. It is understood that in other embodiments, the lower die seal 20 may not be limited to being heart-shaped. In other embodiments, the lower mold head 20 may also be in the shape of a butterfly, a flower, or a pentagram. In this embodiment, the lower mold head 20 may be integrally formed into a heart shape. Of course, it is understood that in other embodiments, the lower mold head 20 may be formed by joining two cylindrical structures with a semicircular cross section to form a heart shape.

Further, in this embodiment, the inner surface and the outer surface of the lower mold head 20 may be coated with a metal coating. In this embodiment, the lower mold head 20 may be a ceramic body or a plastic body. The metal coating may be applied to the inner and outer surfaces of the ceramic or plastic body, and in particular, in the present embodiment, the metal coating may be a copper layer. Of course, it is understood that in other embodiments, the metal coating may be applied only to the inner or outer surface of the lower die head 20. Of course, it is understood that in other embodiments, the lower mold head 20 may be entirely made of metal.

Further, in the present embodiment, the lower mold head 20 may include a second head pillar 21 and a second positioning table 22. The second capping post 21 may be used to encapsulate the soft-packed lithium ion battery. The second positioning stage 22 can be disposed at one end of the second head post 21, specifically, it can be disposed at the upper end of the second head post 21, which can be used for assembling the connecting component.

In this embodiment, the second capping column 21 may have a special-shaped column shape, and the cross section of the second capping column 21 may have a heart shape. The second capping post 21 may be a hollow structure with two ends penetrating, and a second receiving cavity 211 may be formed inside the second capping post. The second accommodating cavity 211 can be used for accommodating the soft package lithium ion battery and shaping the soft package lithium ion battery in a special shape. In the present embodiment, the second receiving cavity 211 may have a special shape, and specifically, in the present embodiment, the second receiving cavity 211 may have a heart shape. In this embodiment, an opening may be disposed on one side of the second capping column 21, and the opening may be communicated with the second accommodating cavity 211, which may facilitate the installation of the soft package lithium ion battery. In this embodiment, the first receiving cavity 111 and the second receiving cavity 211 are disposed to communicate with each other. In the present embodiment, the shape and size of the second receiving cavity 211 can be adapted to the shape and size of the first receiving cavity 111. Of course, it is understood that in other embodiments, the shape and size of the second receiving cavity 211 are not limited to fit the shape and size of the first receiving cavity 111.

Further, in the present embodiment, the second positioning stage 22 can be integrally formed with the second capping column 21. Specifically, in some embodiments, the second positioning stage 22 and the second head post 21 may be integrally formed by casting or injection molding. In the present embodiment, the second positioning table 22 may have a special-shaped ring shape, and specifically, it may have a heart-shaped ring shape. In this embodiment, the second positioning stage 22 may have a cross-sectional dimension of the second positioning stage 22 greater than that of the second cap column 21, and may be disposed to protrude from an outer side wall of the second cap column 21 along a thickness direction of the second cap column 21. In the present embodiment, the shape and size of the second positioning stage 22 can be adapted to the shape and size of the first positioning stage 12, although it is understood that in other embodiments, the shape and size of the second positioning stage 22 can be different from the shape and size of the first positioning stage 12.

In this embodiment, the second positioning table 22 can be provided with a second connecting positioning hole 221. The number of the second connecting positioning holes 221 can be multiple, the second connecting positioning holes 221 can be arranged at intervals along the circumferential direction of the second positioning stage 22, each second connecting positioning hole 221 penetrates through the second positioning stage 22 along the thickness direction of the second positioning stage 22, and each second connecting positioning hole 221 has a through structure with two ends. The second connecting positioning holes 221 and the first connecting positioning holes 121 are correspondingly disposed one by one. The second connecting positioning hole 221 can be used for assembling the connecting component. In the present embodiment, the second connecting positioning hole 221 can be a bar-shaped hole, and it is understood that in other embodiments, the second connecting positioning hole 221 can be a square hole, a round hole, or a special-shaped hole.

In this embodiment, the connection assembly may include a bolt and a nut. The bolt can penetrate through the first connecting positioning hole 121 and penetrate out of the second connecting positioning hole 122 to connect the first positioning table 12 and the second positioning table 22, the nut can be disposed on a side of the second positioning table 22 opposite to the first positioning table 12, the nut can be sleeved on the bolt, and the upper mold end enclosure 10 and the lower mold end enclosure 20 can be connected by tightening the nut. It will be appreciated that in other embodiments, the connection assembly may not be limited to including a bolt and a nut.

Fig. 2 shows a second embodiment of the special-shaped sealing device for soft-package lithium ion batteries, which is different from the first embodiment in that the first connecting positioning hole 121 and the second connecting positioning hole 221 are square holes.

Fig. 3 shows a third embodiment of the special-shaped sealing device for soft-package lithium ion batteries of the present invention, which is different from the first embodiment in that the first connecting positioning hole 121 and the second connecting positioning hole 221 are round holes.

Fig. 4 shows the utility model discloses a fourth embodiment of a special-shaped sealing device for soft packet of lithium ion battery, its difference with this first embodiment lies in, and the difference of this first embodiment lies in, and this last mould head 10, first reference column 11, first holding chamber 111 and first reference table 12 all are butterfly shape. The lower mold end socket 20, the second positioning column 21, the second accommodating cavity 211 and the second positioning table 22 are all butterfly-shaped. The first connecting positioning hole 121 and the second connecting positioning hole 221 are circular holes.

Fig. 5 shows a fifth embodiment of the special-shaped sealing and welding device for soft-package lithium ion batteries of the present invention, which is different from the fourth embodiment in that the first connecting positioning hole 121 and the second connecting positioning hole 221 are bar-shaped holes.

Fig. 6 shows a sixth embodiment of the special-shaped sealing and welding device for soft-package lithium ion batteries of the present invention, which is different from the fourth embodiment in that the first connecting positioning hole 121 and the second connecting positioning hole 221 are square holes.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized by comprising an upper die sealing head (10), a lower die sealing head (20) which is matched with the upper die sealing head (10) and detachably connected with the upper die sealing head (10), and a connecting assembly which is used for connecting the upper die sealing head (10) and the lower die sealing head (20);

the upper die end enclosure (10) is of a hollow structure, and a special-shaped first accommodating cavity (111) for accommodating the soft package lithium ion battery is arranged on the inner side of the upper die end enclosure;

the lower die end enclosure (20) comprises a hollow structure, and a second accommodating cavity (211) which is used for accommodating the soft package lithium ion battery and is in a special shape is arranged on the inner side of the lower die end enclosure; the first accommodating cavity (111) and the second accommodating cavity (211) are communicated with each other.

2. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the upper die sealing head (10) and the lower die sealing head (20) are both special-shaped;

the shapes and the sizes of the first accommodating cavity (111) and the second accommodating cavity (211) are matched.

3. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the upper die sealing head (10) comprises a first sealing head column (11) in a special-shaped column shape; the first head sealing column (11) is a hollow structure with two through ends; the first accommodating cavity (111) is formed in the first head sealing column (11);

and/or the lower die end socket (20) comprises a second end socket column (21) in a special-shaped column shape; the second head sealing column (21) is a hollow structure with two through ends; the second accommodating cavity (211) is formed in the second head sealing column (21).

4. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the upper die head (10) further comprises a first positioning table (12) arranged at the upper end of the first head column (11);

the first positioning table (12) is in a special-shaped annular shape, and the cross section size of the first positioning table (12) is larger than that of the first head sealing column (11);

and/or the lower die end socket (20) further comprises a second positioning table (22) arranged at the lower end of the second end socket column (21);

the second positioning table (22) is in a special-shaped annular shape, and the cross section size of the second positioning table (22) is larger than that of the second head sealing column (21).

5. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that a first connecting positioning hole (121) with two ends penetrating is formed in the first positioning table (12);

a second connecting positioning hole (122) with two through ends is formed in the second positioning table (22);

the first connecting positioning hole (121) and the second connecting positioning hole (122) are correspondingly arranged;

the connecting assembly comprises a bolt which penetrates through the first connecting positioning hole (121) and the second connecting positioning hole (122), and a nut which is sleeved on the bolt and connects the upper die sealing head (10) with the lower die sealing head (20).

6. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the first connecting positioning hole (121) is a round hole, a square hole or a strip-shaped hole.

7. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the first positioning table (12) is integrally formed with the first head sealing column (11);

and/or the second positioning table (22) is integrally formed with the second head capping column (21).

8. The special-shaped sealing and welding device for the soft package lithium ion battery according to claim 1, wherein the upper die sealing head (10) and/or the lower die sealing head (20) is made of metal.

9. The special-shaped sealing and welding device for the soft package lithium ion battery is characterized in that the inner surface and/or the outer surface of the upper die head (10) and/or the lower die head (20) are/is coated with a metal coating.

10. The special-shaped sealing and welding device for the soft package lithium ion battery as claimed in claim 1, wherein the special shape comprises a heart shape, a flower shape, a five-pointed star shape and a butterfly shape.