CN206301894U - The angle position encapsulation end socket and angle position packaging system of a kind of flexible packing lithium ion electric core - Google Patents

Abstract

The utility model discloses a corner packaging head of a soft-packed lithium-ion electric core, which comprises an upper head and a lower head located below the upper head, and the upper head includes an upper mounting block and a lower end of the upper mounting block. Several sets of upper packaging parts, the lower head includes a lower mounting block and several sets of lower packaging parts that are arranged on the upper end of the lower mounting block and correspond to the upper sealing part one by one. The cross section of the upper sealing part or the lower sealing part is "L" shape Or in the shape of a "ten", the corresponding set of upper and lower packaging parts are used to package the two corners of a soft-packed lithium-ion battery, and the upper packaging part is formed between two adjacent vertical surfaces that are concave inward. The first R angle, the second R angle is formed between two adjacent vertical surfaces concave inward of the lower encapsulation part. The utility model also provides a corner sealing device with the corner sealing head. The utility model realizes the heat-sealing of the angle positions of one-off multi-electric cores, and improves the production efficiency.

Description

Corner packaging head and corner packaging device for soft-packaged lithium-ion batteries

technical field

The utility model relates to the field of packaging devices, in particular to a corner packaging head and a corner packaging device of a soft-packed lithium-ion battery core.

Background technique

Lithium-ion batteries are currently the most advanced commercial secondary batteries, and are widely used in various electronic products. According to the packaging materials, lithium-ion batteries can be divided into steel case lithium-ion batteries, aluminum case lithium-ion batteries and flexible packaging lithium-ion batteries. Among them, flexible packaging lithium-ion batteries have the advantages of high energy density, light weight, many shape changes, and can be made into thin batteries. Therefore, current electronic mobile products basically use flexible packaging lithium-ion batteries as energy sources.

Since the electrolyte used in lithium-ion batteries includes a mixture of various organic solvents, it is a very dangerous chemical, and it is not allowed to come into contact with the outside air. Leakage of the electrolyte or avoiding the penetration of outside air into the interior of the battery, causing damage and danger, while ensuring that the performance of the soft-packed lithium ions will not be affected by leakage or swelling.

The batteries of flexible packaging lithium-ion batteries generally use aluminum-plastic composite film as packaging film, which has good stretchability, lightness and flexibility. Aluminum-plastic composite film generally has a five-layer structure, with two polyethylene layers inside and outside ( PE) and polypropylene layer (PP), with an aluminum foil layer in the middle. Therefore, in the production process of flexible packaging lithium-ion batteries, it is required to perform top-side sealing and corner packaging on aluminum-plastic films. Effective corner packaging is conducive to avoiding corner damage and leakage during the forming process of the cells, and the occurrence of hot-pressed cells. Displacement deformation phenomenon. The corner packaging head generally includes an upper sealing head with an upper packaging part and a lower sealing head with a lower packaging part opposite to the upper packaging part, and the battery cell after the top side sealing is placed between the upper and lower packaging parts. For corner heat sealing, the existing corner packaging adopts single-station or turntable all-in-one molding equipment, which encapsulates one corner or two corners at one time, which has low efficiency and cannot meet the needs of mass production.

Therefore, it is necessary to provide a corner packaging head and a corner packaging device, which can effectively improve the efficiency of corner packaging and meet the requirements of mass production.

Utility model content

One of the purposes of the present utility model is to provide a corner packaging head and a corner packaging device for flexible packaging lithium-ion batteries, which can effectively improve production efficiency and meet the needs of mass production.

Another object of the present invention is to provide a corner packaging head and a corner packaging device for flexible packaging lithium-ion batteries, which can effectively improve production efficiency and meet the needs of mass production.

In order to achieve the above purpose, the solution of the utility model is to provide a corner packaging head of a soft-packed lithium-ion battery, including an upper head and a lower head located below the upper head, and the upper head includes An upper mounting block and several sets of upper packaging parts arranged at the lower end of the upper mounting block, and the lower head includes a lower mounting block and a number of upper sealing parts arranged at the upper end of the lower mounting block and corresponding to the upper sealing parts one by one. A set of lower packaging parts, the cross section of the upper packaging part or the lower packaging part is "L" shaped or "ten" shaped, and the corresponding set of the upper packaging part and the lower packaging part are used to package a The two corners of the soft-pack lithium-ion battery core, the first R angle is formed between the two adjacent vertical surfaces concave inward of the upper packaging part, and the two adjacent vertical surfaces concave inward of the lower packaging part A second R angle is formed between them.

Preferably, several groups of the upper encapsulation parts or the lower encapsulation parts are arranged in a row.

Preferably, when the upper encapsulation part and the corresponding lower encapsulation part are closed, the end surface of the upper encapsulation part overlaps with the end surface of the lower encapsulation part.

Preferably, the upper packaging part or the lower packaging part has at least two groups.

Preferably, the cross-section of the upper packaging part or the lower packaging part in the middle is in the shape of a "cross".

Preferably, the position of the upper packaging part or the lower packaging part can be adjusted according to the width of the soft-packed lithium-ion battery cell.

The utility model also provides a corner packaging device for soft-packaging lithium-ion batteries, which includes the above-mentioned corner packaging head.

Compared with the prior art, the upper and lower heads of the utility model have a number of upper and lower packaging parts corresponding to each other, and the upper and lower packaging parts in the middle have "ten" end faces, which can meet the requirements of the two batteries at the same time. Horizontal corner packaging will not affect the packaging effect due to the large corner area, and the packaging parts on both sides can be adjusted horizontally according to different cell widths. When the side seals of two soft-pack lithium-ion cells are After the separator is pushed inward, the corner packaging of two batteries can be carried out at one time, and the corner packaging efficiency of soft-packed lithium-ion batteries is increased by 50%. Features.

Description of drawings

Fig. 1 is the first perspective view of the corner sealing head and device of the present invention.

Fig. 2 is a side view of the corner sealing head and device of the utility model.

detailed description

Embodiments of the utility model are now described with reference to the accompanying drawings. As mentioned above, the utility model provides a corner packaging head 10 and a corner packaging device 1 of a soft-packed lithium-ion cell 2, which can effectively improve the corner packaging efficiency. Meet the needs of mass production.

As shown in FIGS. 1-2 , the corner packaging device 1 for the flexible packaging lithium-ion battery 2 includes a corner packaging head 10 , a carrier plate 20 and a separator 30 . The carrier plate 20 is used to carry the soft-packed lithium-ion cells 2 to be corner-packaged, and the separator 30 is arranged on the carrier plate 20 to separate two adjacent soft-packed lithium-ion cells 2 . The corner sealing head 10 includes an upper sealing head 11 and a lower sealing head 12 located below the upper sealing head 11. The upper sealing head 11 includes an upper mounting block 113 and several sets of upper sealing parts 115 located at the lower end of the upper mounting block 113. The lower sealing head 12 includes a lower mounting block 123 and several groups of lower sealing parts 125 arranged on the upper end of the lower mounting block 123 and corresponding to the upper sealing parts 115 one-to-one. The cross-section of the upper package part 115 or the lower package part 125 is "L" or "ten", and a corresponding set of upper package part 115 and lower package part 125 are used to package two parts of a soft-packed lithium-ion cell 2. corner position. Taking the cross section as "ten" as an example, the upper package part 115 or the lower package part 125 has 4 sets of concave vertical surfaces 1152, 1252. If the cross section is "L" shaped, the concave vertical surfaces 1152, 1252 Separately as a group. A first R-angle 1153 is formed between the two concave vertical surfaces 1152 of the upper package part 115, and the range of the first R-angle 1153 can be 30 degrees to 60 degrees. A second R-angle 1253 is formed therebetween, and the range of the second R-angle 1253 may be 30 degrees to 60 degrees. Specifically, several sets of upper package parts 115 or lower package parts 125 are arranged in a row, and when the upper package parts 115 and the corresponding lower package parts 125 are closed, the end surfaces 1151 of the upper package parts 115 and the end surfaces 1251 of the lower package parts 125 overlap. There are two groups of upper packaging part 115 and lower packaging part 125 respectively. Taking the upper packaging part 115 as an example, the two groups of upper packaging parts 115 share an upper packaging part 115 in the middle. The cross-section is in the shape of a "ten", and the structure of the lower encapsulation part 125 is consistent with that of the upper encapsulation part 115, which will not be repeated here. The position of the upper packaging part 115 or the lower packaging part 125 can be adjusted according to the width of the soft-packed lithium-ion battery 2. In this embodiment, the upper packaging part 115 or the lower packaging part 125 on both sides can be moved to change the lateral distance.

In summary, after pushing the two soft-pack lithium-ion cells 2 into place along the edge of the separator 30, the two sets of upper packaging parts 115 (three upper packaging parts 115) of the upper sealing head 11 and the two groups of lower sealing parts 115 of the lower sealing head 12 The encapsulation part 125 (three lower encapsulation parts 125) is symmetrically closed, and the corner encapsulation of the two soft-pack lithium-ion batteries 2 is completed under a certain pressure, temperature and time.

Compared with the prior art, the upper and lower sealing heads 11, 12 of the present invention have a number of upper and lower packaging parts 115, 125 in one-to-one correspondence, and the upper and lower packaging parts 115, 125 in the middle have the character "ten" The end faces 1151, 1251 can meet the angular lateral packaging of the two electric cores 2 at the same time, and the packaging effect will not be affected by the large corner area, and the upper and lower packaging parts 115, 125 on both sides can be adjusted according to the width of the electric core 2 Horizontally adjust, when the side seals of the two soft-packed lithium-ion batteries 2 are pushed inward along the separator 30 at the same time, the corner packaging of the two batteries 2 can be performed at one time, and the corner packaging of the soft-packed lithium-ion batteries 2 can be carried out. The efficiency of corner packaging is increased by 50%. It has the characteristics of simple manufacture, convenient operation, improved production efficiency, and easy to meet the needs of mass production.

What is disclosed above is only a preferred example of the utility model, and its function is to facilitate the understanding and implementation of those skilled in the art. Of course, the scope of rights of the utility model cannot be limited by this, so a patent application is made according to the utility model The equivalent changes made within the scope still belong to the scope covered by the present utility model.

Claims (7)

1. a kind of angle position of flexible packing lithium ion electric core encapsulates end socket, it is characterised in that the angle position encapsulation end socket includes：

One upper cover, the upper cover includes mounting blocks and the encapsulation part on some groups of the upper mounting blocks lower end on one； And

A low head below the upper cover, the low head includes mounting blocks and on the lower mounting blocks End and it is one-to-one with the upper encapsulation part some groups under encapsulation part；

The cross section of the upper encapsulation part or the lower encapsulation part is L-shaped or in " ten " font, upper envelope described in corresponding a group Dress portion and the lower encapsulation part are used to encapsulate two angles position of a Soft Roll lithium-ion electric core, concave the two of the upper encapsulation part A R angles are formed between adjoining vertical surface, the 2nd R angles are formed between two adjoining vertical surfaces for concaving of the lower encapsulation part.

2. the angle position of flexible packing lithium ion electric core as claimed in claim 1 encapsulates end socket, it is characterised in that：On described in some groups Encapsulation part or the lower encapsulation part are arranged in a row.

3. the angle position of flexible packing lithium ion electric core as claimed in claim 1 encapsulates end socket, it is characterised in that：The upper encapsulation part When being closed with the corresponding lower encapsulation part, the end face of the upper encapsulation part is Chong Die with the end face of the lower encapsulation part.

4. the angle position of flexible packing lithium ion electric core as claimed in claim 1 encapsulates end socket, it is characterised in that：The upper encapsulation part Or the lower encapsulation part has at least two groups.

5. the angle position of flexible packing lithium ion electric core as claimed in claim 4 encapsulates end socket, it is characterised in that：Positioned at middle institute The cross section for stating encapsulation part or the lower encapsulation part is in " ten " font.

6. the angle position of flexible packing lithium ion electric core as claimed in claim 1 encapsulates end socket, it is characterised in that：The upper encapsulation part Or the position of the lower encapsulation part can be adjusted according to the width of Soft Roll lithium-ion electric core.

7. a kind of flexible packing lithium ion electric core angle position packaging system, it is characterised in that：Including such as any one of claim 1~6 Described angle position encapsulation end socket.