CN211980807U

CN211980807U - Top sealing head of aluminum plastic film flexible package lithium ion battery cell

Info

Publication number: CN211980807U
Application number: CN202020627168.6U
Authority: CN
Inventors: 肖兴立; 戴馥晓; 刘义树
Original assignee: Guizhou Jinwo New Energy Co ltd
Current assignee: Guizhou Jinwo New Energy Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-20
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a plastic-aluminum membrane soft-packing lithium ion cell's top head, including installing cylinder, upper cover and the low head on the fixed plate, the piston end of cylinder runs through fixed plate and upper cover fixed connection, the low head sets up in the below of upper cover and adjusts well mutually with the upper cover, the bottom of upper cover is connected with the lug, the upper portion of low head is connected with the lower lug corresponding with the upper lug, be provided with annular cutter in the upper cover, annular cutter's internal diameter is the same with the external diameter of last lug and both adopt clearance fit. A plastic-aluminum membrane soft-packing lithium ion cell's top head, be provided with the mechanism that is used for controlling annular cutter reciprocating motion through the inside at the upper cover, can control annular cutter through hand crank from the inside excision of the unnecessary part in both sides of plastic-aluminum membrane encapsulation position that stretches out of upper cover, avoid the phenomenon on the thick side that the encapsulation position of plastic-aluminum membrane appears.

Description

Top sealing head of aluminum plastic film flexible package lithium ion battery cell

Technical Field

The utility model relates to an electrical equipment field, in particular to plastic-aluminum membrane soft packaging lithium ion battery cell's top head.

Background

With the portable electronic device developing towards light and smart, the lithium ion battery cell usually uses an aluminum plastic film as a packaging material, and in the process of packaging the soft package lithium ion battery cell, the steps of winding, forming, one-edge sealing and heat sealing, top sealing and packaging, liquid injection, pre-charging, two-sealing, edge cutting, capacity grading and the like are included, wherein the top sealing and packaging are performed at a tab, and the top sealing and packaging are performed through butt sealing and pressing of an upper end socket and a lower end socket to realize heat sealing of the packaging film at the tab.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a top head of plastic-aluminum membrane soft packaging lithium ion battery cell can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a top seal head of a lithium ion battery cell with an aluminum plastic film flexible package comprises a cylinder, an upper seal head and a lower seal head which are arranged on a fixed plate, the piston end of the cylinder penetrates through the fixed plate and is fixedly connected with the upper seal head, the lower seal head is arranged below the upper seal head and is aligned with the upper seal head, the bottom of the upper end enclosure is connected with an upper convex block, the upper part of the lower end enclosure is connected with a lower convex block corresponding to the upper convex block, an annular cutter is arranged in the upper seal head, the inner diameter of the annular cutter is the same as the outer diameter of the upper convex block, and the annular cutter and the upper convex block are in clearance fit, a hand crank is arranged outside the upper end enclosure, a cutter control assembly is arranged inside the upper end enclosure, the hand crank is in driving connection with the cutter control assembly, and the hand crank is rotated to control the annular cutter to do reciprocating telescopic motion through the cutter control assembly, and the annular cutter can extend out of the lower end face of the upper bump.

Preferably, the cutter control assembly includes runner, rack, gear and rolling disc the inside of upper cover is provided with the backplate, the rolling disc rotates and sets up on the backplate and the position fixed mounting of skew centre of a circle has the stand on this rolling disc, the gear is located the below of rolling disc and rotates through the hinge and install on the backplate, gear fixedly connected with rocking bar, rocking bar is equipped with and can be at bar inslot round trip movement with stand matched with bar groove and stand, the rack level arrange in the below of gear and with gear engagement, the rack passes through the stopper and installs on the backplate, the rack is kept away from gear one side and is equipped with the arch, the hand is set up in the outer wall of upper cover and is connected with the rolling disc drive, runner and protruding line contact.

Preferably, the bottom of runner is connected with the mounting panel, the annular cutter is fixed in on this mounting panel to install the spring between the bottom of upper cover cavity and mounting panel.

Preferably, two sides of the top of the upper end enclosure are respectively provided with a guide pillar, the guide pillars extend upwards to penetrate through the fixing plate, and the length of each guide pillar is greater than the stroke of the upper end enclosure.

Compared with the prior art, the utility model discloses following beneficial effect has: this top seal head of flexible package lithium ion cell of plastic-aluminum membrane is provided with the mechanism that is used for controlling annular cutter reciprocating motion through the inside at the upper cover, fold to press on the plastic-aluminum membrane when upper cover and lower head and heat the encapsulation back, can control annular cutter through hand crank and stretch out the unnecessary part excision of both sides with the plastic-aluminum membrane encapsulation position from the upper cover is inside, the phenomenon of the partial thickness of avoiding the encapsulation position of plastic-aluminum membrane to appear to the aesthetic property of battery encapsulation has been ensured.

Drawings

Fig. 1 is a schematic structural view of a top sealing head of a lithium ion battery cell with an aluminum plastic film flexible package of the present invention;

fig. 2 is a schematic view of the internal structure of the top head of the lithium ion battery cell with the aluminum plastic film for soft package of the present invention;

fig. 3 is the schematic diagram of another state inside the upper head of the top sealing head of the aluminum plastic film flexible packaging lithium ion battery cell of the utility model.

In the figure: 1. a cylinder; 2. a fixing plate; 3. a guide post; 4. an upper end enclosure; 5. an upper bump; 6. a lower bump; 7. a lower end enclosure; 8. a hand crank; 9. a ring-shaped cutter; 10. a spring; 11. mounting a plate; 12. a rotating wheel; 13. a protrusion; 14. a back plate; 15. a rack; 16. a limiting block; 17. a gear; 18. a hinge; 19. a rocking bar; 20. rotating the disc; 21. and (4) a column.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, a top seal head of a lithium ion battery cell with an aluminum plastic film flexible package comprises a cylinder 1, an upper seal head 4 and a lower seal head 7 which are arranged on a fixing plate 2, a piston end of the cylinder 1 penetrates through the fixing plate 2 and is fixedly connected with the upper seal head 4, the lower seal head 7 is arranged below the upper seal head 4 and is aligned with the upper seal head 4, the bottom of the upper seal head 4 is connected with an upper convex block 5, the upper part of the lower seal head 7 is connected with a lower convex block 6 corresponding to the upper convex block 5, an annular cutter 9 is arranged in the upper seal head 4, the inner diameter of the annular cutter 9 is the same as the outer diameter of the upper convex block 5 and is in clearance fit with the upper convex block, a hand crank 8 is arranged outside the upper seal head 4, a cutter control assembly is arranged inside the upper seal head 4, the hand crank 8 is in driving connection with the, the annular cutter 9 may extend beyond the lower end face of the upper projection 5.

The cutter control assembly comprises a rotating wheel 12, a rack 15, a gear 17, a rotating disc 20, a back plate 14 is arranged inside the upper end enclosure 4, the rotating disc 20 is rotatably arranged on the back plate 14, an upright post 21 is fixedly arranged at a position, deviating from the circle center, on the rotating disc 20, the gear 17 is positioned below the rotating disc 20 and is rotatably arranged on the back plate 14 through a hinge 18, the gear 17 is fixedly connected with a swing rod 19, the swing rod 19 is provided with a strip-shaped groove matched with the upright post 21, the upright post 21 can move back and forth in the strip-shaped groove, the rack 15 is horizontally arranged below the gear 17 and is meshed with the gear 17, the rack 15 is arranged on the back plate 14 through a limiting block 16, a protrusion 13 is arranged on one side, far away from the gear 17, of the rack 15, a hand crank 8 is arranged on the outer wall of the upper; the bottom of the rotating wheel 12 is connected with a mounting plate 11, the annular cutter 9 is fixed on the mounting plate 11, and a spring 10 is arranged between the bottom of the cavity of the upper end enclosure 4 and the mounting plate 11; two sides of the top of the upper end enclosure 4 are respectively provided with a guide pillar 3, the guide pillars 3 extend upwards to penetrate through the fixing plate 2, and the length of each guide pillar 3 is larger than the stroke of the upper end enclosure 4.

It should be noted that, when in use, the top seal head of the lithium ion battery cell with the flexible package of the aluminum-plastic film can avoid the phenomenon of partial thickness of the package position of the aluminum-plastic film through the space formed by the upper convex block 5 and the lower convex block 6 arranged on the upper seal head 4 and the lower seal head 7 and the peripheral side walls of the upper convex block 5 and the lower convex block 6, the hand crank 8 is shaken by hand to drive the rotating disc 20 to rotate, the upright post 21 on the rotating disc 20 drives the swinging rod 19 to swing left and right, the swinging rod 19 and the gear 17 carry out reciprocating swing by taking the hinge 18 as the center, the gear 17 and the rack 15 are meshed for transmission to drive the rack 15 to linearly reciprocate in the horizontal direction, the bulge 13 and the rotating wheel 12 are in transmission fit with each other to extrude the annular cutter 9 to regularly move downwards and extend out and cut off the redundant parts on the two sides of the package position of the aluminum-plastic film, when the bulge 13 is not in contact with the rotating wheel 12, the, in the whole motion process of the upper end enclosure 4, the upper end enclosure 4 can move along the vertical direction all the time due to the limitation of the guide pillar 3, so that the accurate matching of the lower end enclosure 7 of the upper end enclosure 4 is ensured, and the occurrence of deviation is avoided.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a top seal head of flexible package lithium ion battery cell of plastic-aluminum membrane which characterized in that: comprises a cylinder (1), an upper end enclosure (4) and a lower end enclosure (7) which are arranged on a fixed plate (2), wherein the piston end of the cylinder (1) penetrates through the fixed plate (2) and the upper end enclosure (4) for fixed connection, the lower end enclosure (7) is arranged below the upper end enclosure (4) and is aligned with the upper end enclosure (4), the bottom of the upper end enclosure (4) is connected with an upper lug (5), the upper part of the lower end enclosure (7) is connected with a lower lug (6) corresponding to the upper lug (5), an annular cutter (9) is arranged in the upper end enclosure (4), the inner diameter of the annular cutter (9) is the same as the outer diameter of the upper lug (5) and adopts clearance fit with the upper lug and the lower lug, a hand crank (8) is arranged outside the upper end enclosure (4), a cutter control assembly is arranged inside the upper end enclosure (4), and the hand crank (8) is in driving connection with the, and the hand crank (8) is rotated to control the annular cutter (9) to do reciprocating telescopic motion through the cutter control assembly, and the annular cutter (9) can extend out of the lower end face of the upper bump (5).

2. The top sealing head of the aluminum plastic film flexible package lithium ion battery cell of claim 1, characterized in that: the cutter control assembly comprises a rotating wheel (12), a rack (15), a gear (17) and a rotating disc (20), a back plate (14) is arranged in the upper end enclosure (4), the rotating disc (20) is rotatably arranged on the back plate (14), an upright post (21) is fixedly arranged at a position deviating from the circle center on the rotating disc (20), the gear (17) is positioned below the rotating disc (20) and rotatably arranged on the back plate (14) through a hinge (18), the gear (17) is fixedly connected with a swinging rod (19), the swinging rod (19) is provided with a strip-shaped groove matched with the upright post (21), the upright post (21) can move back and forth in the strip-shaped groove, the rack (15) is horizontally arranged below the gear (17) and is meshed with the gear (17), the rack (15) is arranged on the back plate (14) through a limiting block (16), a protrusion (13) is arranged on one side, away from the gear (17), of the rack (15), the hand crank (8) is arranged on the outer wall of the upper end enclosure (4) and is in driving connection with the rotating disc (20), and the rotating wheel (12) is in line contact with the protrusion (13).

3. The top sealing head of the aluminum plastic film flexible package lithium ion battery cell of claim 2, characterized in that: the bottom of runner (12) is connected with mounting panel (11), annular cutter (9) are fixed in on this mounting panel (11) to install spring (10) between the bottom of upper cover (4) cavity and mounting panel (11).

4. The top sealing head of the aluminum plastic film flexible package lithium ion battery cell of claim 1, characterized in that: two sides of the top of the upper end enclosure (4) are respectively provided with a guide pillar (3), the guide pillars (3) extend upwards to penetrate through the fixing plate (2), and the length of each guide pillar (3) is larger than the stroke of the upper end enclosure (4).