CN215184228U

CN215184228U - Soft packet of lithium cell sealing device

Info

Publication number: CN215184228U
Application number: CN202120743725.5U
Authority: CN
Inventors: 吕振国; 刘嘉; 王宏义; 张彤; 韦涛; 葛梁梁
Original assignee: Shandong Dlg Electronics Co ltd
Current assignee: Shandong paizhi Electronics Co.,Ltd.
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-12-14
Anticipated expiration: 2031-04-12

Abstract

The utility model relates to the technical field of lithium battery processing, in particular to a soft package lithium battery heat sealing device, which comprises a base, a top plate, a movable seat and a battery fixing plate, wherein the base and the top plate are arranged oppositely, and the battery fixing plate and the base are mutually fixed; a plurality of support rods are arranged on the base and fixedly connected with the top plate; the movable seat is arranged on the lower side of the top plate, a sleeve is arranged on the lower side of the top plate, a connecting rod is arranged in the sleeve, and the connecting rod is fixedly connected with the movable seat; a heat sealing groove is formed in the battery fixing plate, and a lower heat sealing plate is arranged in the heat sealing groove; a fixed frame is arranged at the lower side of the movable seat, and an upper heat sealing plate is arranged in the fixed frame; the lower heat-sealing plate and the upper heat-sealing plate are heated by electric heating sheets, and the electric heating sheets are controlled by a controller; the utility model provides a heat-seal structure can carry out the heat-seal to aluminium cell's electric core and plastic-aluminum membrane, and the heat-seal effect is good, and carries out the heat-seal work of multiunit battery simultaneously, and is efficient.

Description

Soft packet of lithium cell sealing device

Technical Field

The utility model relates to a lithium cell processing technology field specifically is a soft packet of lithium cell sealing device.

Background

Along with the continuous promotion of power lithium ion battery production technology and the continuous acceleration of research and development of novel battery, the country is more and more strict to each item performance requirement of power lithium cell, and the standard also constantly improves. The advantages and disadvantages are the rules of the market, and the key indexes of the lithium ion battery, such as energy density, safety, cost and the like, must be strictly controlled. Among the three lithium ion batteries, the soft package battery has the advantages of small mass, small internal resistance, high safety, high energy density and the like, and occupies an important position in the field of power batteries.

The soft package lithium battery is structurally packaged by adopting an aluminum plastic film, and a lithium battery cell is packaged by a heat sealing technology; the existing packaging equipment can only package one battery cell at a time, and has poor packaging efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a soft packet of lithium cell sealing device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a heat sealing device for a soft package lithium battery comprises a base, a top plate, a movable seat and a battery fixing plate, wherein the base and the top plate are arranged oppositely, and the battery fixing plate and the base are fixed with each other; a plurality of support rods are arranged on the base and fixedly connected with the top plate; the movable seat is arranged on the lower side of the top plate, a sleeve is arranged on the lower side of the top plate, a connecting rod is arranged in the sleeve, and the connecting rod is fixedly connected with the movable seat; a heat sealing groove is formed in the battery fixing plate, and a lower heat sealing plate is arranged in the heat sealing groove; a fixed frame is arranged at the lower side of the movable seat, and an upper heat sealing plate is arranged in the fixed frame; an air cylinder is arranged in the sleeve, and an output shaft of the air cylinder is fixedly connected with the connecting rod; the lower heat-sealing plate and the upper heat-sealing plate are heated by electric heating sheets, and the air cylinder and the electric heating sheets are controlled by the controller.

Preferably, a vacuum pump is arranged in the movable seat, the air suction end of the vacuum pump is arranged at the lower side of the movable seat and corresponds to the heat sealing groove, and an exhaust pipe is arranged at the top end of the movable seat and is connected with the air outlet end of the vacuum pump; the vacuum pump is electrically connected with the controller.

Preferably, a sealing seat is arranged at the lower side of the moving seat, a sealing groove is arranged on the surface of the battery fixing plate, and the sealing groove is positioned above the heat sealing groove; the sealing seat is attached to the sealing groove.

Preferably, the whole sealing seat is of an inverted quadrangular frustum pyramid structure, the side face is obliquely arranged, and the shape of the heat-sealing groove is matched with that of the sealing seat.

Preferably, a plurality of sealing strips are arranged on the inclined surface of the sealing seat; the sealing strip is made of rubber materials, the cross section of the sealing strip is of a square structure, and the bottom corner of the square is an inclined plane.

Preferably, the side surface of the moving seat is fixedly provided with a guide block, and the guide block is arranged corresponding to the support rod and is penetrated on the support rod.

Preferably, an electric push rod is arranged in the fixing frame and drives the upper heat sealing plate to move up and down; the electric push rod is electrically connected with the controller.

Preferably, a groove is arranged in the upper heat sealing plate, and the groove and the battery are mutually clamped.

Compared with the prior art, the beneficial effects of the utility model are that: the heat-sealing structure provided by the utility model can heat-seal the cell of the aluminum battery and the aluminum plastic film, has good heat-sealing effect, and simultaneously performs the heat-sealing work of a plurality of groups of batteries, and has high efficiency; the device is automatically packaged, the operation is simple, the requirement on workers is low, and the popularization is easy.

Drawings

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

FIG. 2 is an enlarged view taken at A in FIG. 2;

fig. 3 is a schematic view of the fixing frame structure of the present invention;

reference numbers in the figures: 1. a base; 11. a support bar; 2. a top plate; 21. a sleeve; 22. a connecting rod; 3. a movable seat; 31. a sealing seat; 32. an exhaust pipe; 33. a guide block; 34. a sealing strip; 4. a battery fixing plate; 41. a sealing groove; 42. heat sealing the groove; 43. a lower heat seal plate; 5. a fixing frame; 51. and (4) an upper heat sealing plate.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 referred to 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.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a heat sealing device for a soft package lithium battery comprises a base 1, a top plate 2, a movable seat 3 and a battery fixing plate 4, wherein the base 1 and the top plate 2 are arranged oppositely, and the battery fixing plate 4 and the base 1 are fixed with each other; a plurality of support rods 11 are arranged on the base 1, and the support rods 11 are fixedly connected with the top plate 2; the movable seat 3 is arranged at the lower side of the top plate 2, a sleeve 21 is arranged at the lower side of the top plate 2, a connecting rod 22 is arranged in the sleeve 21, and the connecting rod 22 is fixedly connected with the movable seat 3; a heat seal groove 42 is formed in the battery fixing plate 4, and a lower heat seal plate 43 is arranged in the heat seal groove 42; a fixed frame 5 is arranged at the lower side of the movable seat 3, and an upper heat sealing plate 51 is arranged in the fixed frame 5; an air cylinder is arranged in the sleeve 21, and an output shaft of the air cylinder is fixedly connected with a connecting rod 22; the lower heat-sealing plate 43 and the upper heat-sealing plate 51 are heated by electric heating sheets, and the air cylinder and the electric heating sheets are controlled by a controller.

Further, a vacuum pump is arranged in the movable seat 3, the suction end of the vacuum pump is positioned at the lower side of the movable seat 3 and corresponds to the heat-sealing groove 42, an exhaust pipe 32 is arranged at the top end of the movable seat 3, and the exhaust pipe 32 is connected with the air outlet end of the vacuum pump; the vacuum pump is electrically connected with the controller.

Further, a sealing seat 31 is arranged at the lower side of the moving seat 3, a sealing groove 41 is arranged on the surface of the battery fixing plate 4, and the sealing groove 41 is positioned above a heat sealing groove 42; the seal holder 31 and the seal groove 41 are attached to each other.

Further, the whole sealing seat 31 is of an inverted quadrangular frustum pyramid structure, the side face of the sealing seat is obliquely arranged, and the shape of the heat sealing groove 42 is matched with that of the sealing seat 31.

Further, a plurality of sealing strips 34 are arranged on the inclined surface of the sealing seat 31, and the sealing strips 34 are arranged along the inclined surface of the sealing seat 31; the sealing strip 34 is made of rubber material, the cross section of the sealing strip is of a square structure, and the lowest side corner of the square structure is an inclined plane.

Further, a guide block 33 is fixedly arranged on the side surface of the moving seat 3, and the guide block 33 is arranged corresponding to the support rod 11 and is threaded on the support rod 11.

Further, an electric push rod is arranged in the fixing frame 5 and drives the upper heat sealing plate 51 to move up and down; the electric push rod is electrically connected with the controller.

Further, a groove is formed in the upper heat seal plate 51, and the groove and the battery are engaged with each other.

The working principle is as follows: in the actual use process, the lithium battery cell to be packaged is placed in the heat-seal groove 42; the cylinder in the sleeve 21 is controlled by the controller to work, and the connecting rod 22 is driven to stretch, so that the position of the movable seat 3 is adjusted, and the movable seat 3 is pressed on the battery fixing plate 4; the movable seat 3 and the battery fixing plate 4 are butted with each other through the sealing seat 31 and the sealing groove 41, and a sealed space is formed between the movable seat and the sealing groove; controlling the vacuum pump inside the movable seat 3 to work through the controller, and pumping air out of the lower surface of the movable seat 3 and exhausting the air out of the exhaust pipe 32; so that the chamber formed between the movable base 3 and the battery fixing plate 4 is formed in a vacuum atmosphere, and the heat-seal groove 42 is also in a vacuum atmosphere. The electric heating sheets corresponding to the lower heat sealing plate 43 and the upper heat sealing plate 51 are controlled to work by the controller, and the electric core between the lower heat sealing plate and the upper heat sealing plate and the aluminum plastic film wrapped outside the electric core are provided with temperature for packaging.

The movable seat 3 penetrates through the support rod 11 through the guide block 33, so that the directivity of the movable seat 3 in the motion process is effectively ensured; the seal receptacle 31 of quadrangular frustum pyramid form conveniently carries out the joint with seal groove 41, and the sealing strip 34 that sets up on seal receptacle 31 guarantees the leakproofness that the two formed the cavity after docking, avoids taking place the gas leakage condition, guarantees encapsulation operational environment's stability, and then guarantees the encapsulation quality. The upper heat-sealing plate 51 is provided with a groove which is matched with the battery cell and can be clamped outside the battery cell for packaging, so that the aluminum plastic films at the edge parts are connected; the upper heat seal plate 51 is mounted in the fixed frame 5 by an electric push rod, and the position of the upper heat seal plate 51 can be finely adjusted up or down to perform a dispensing work more favorably.

It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.

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 soft packet of lithium cell sealing device which characterized in that: the battery fixing device comprises a base (1), a top plate (2), a moving seat (3) and a battery fixing plate (4), wherein the base (1) and the top plate (2) are arranged oppositely, and the battery fixing plate (4) and the base (1) are fixed mutually; a plurality of support rods (11) are arranged on the base (1), and the support rods (11) are fixedly connected with the top plate (2); the movable seat (3) is arranged on the lower side of the top plate (2), a sleeve (21) is arranged on the lower side of the top plate (2), a connecting rod (22) is arranged in the sleeve (21), and the connecting rod (22) is fixedly connected with the movable seat (3); a heat seal groove (42) is formed in the battery fixing plate (4), and a lower heat seal plate (43) is arranged in the heat seal groove (42); a fixed frame (5) is arranged at the lower side of the movable seat (3), and an upper heat sealing plate (51) is arranged in the fixed frame (5); an air cylinder is arranged in the sleeve (21), and an output shaft of the air cylinder is fixedly connected with a connecting rod (22); the lower heat-sealing plate (43) and the upper heat-sealing plate (51) are heated by electric heating sheets, and the air cylinder and the electric heating sheets are controlled by a controller.

2. The heat sealing device for the soft package lithium battery as claimed in claim 1, wherein: a vacuum pump is arranged in the movable seat (3), the air suction end of the vacuum pump is positioned at the lower side of the movable seat (3) and corresponds to the heat seal groove (42), an exhaust pipe (32) is arranged at the top end of the movable seat (3), and the exhaust pipe (32) is connected with the air outlet end of the vacuum pump; the vacuum pump is electrically connected with the controller.

3. The heat sealing device for the soft package lithium battery as claimed in claim 1, wherein: a sealing seat (31) is arranged on the lower side of the moving seat (3), a sealing groove (41) is arranged on the surface of the battery fixing plate (4), and the sealing groove (41) is positioned above the heat sealing groove (42); the sealing seat (31) is attached to the sealing groove (41).

4. The heat sealing device for the soft package lithium battery as claimed in claim 3, wherein: the whole sealing seat (31) is of an inverted quadrangular frustum pyramid structure, the side face of the sealing seat is obliquely arranged, and the shape of the heat sealing groove (42) is matched with that of the sealing seat (31).

5. The heat sealing device for the soft package lithium battery as claimed in claim 4, wherein: a plurality of sealing strips (34) are arranged on the inclined surface of the sealing seat (31), and the sealing strips (34) are arranged along the inclined surface of the sealing seat (31); the sealing strip (34) is made of rubber materials, the cross section of the sealing strip is of a square structure, and the lowest side corner of the square is an inclined plane.

6. The heat sealing device for the soft package lithium battery as claimed in claim 1, wherein: the side surface of the movable seat (3) is fixedly provided with a guide block (33), and the guide block (33) is arranged corresponding to the support rod (11) and is penetrated on the support rod (11).

7. The heat sealing device for the soft package lithium battery as claimed in claim 1, wherein: an electric push rod is arranged in the fixed frame (5) and drives the upper heat sealing plate (51) to move up and down; the electric push rod is electrically connected with the controller.

8. The heat sealing device for the soft package lithium battery as claimed in claim 1, wherein: the upper heat sealing plate (51) is provided with a groove, and the groove and the battery are mutually clamped.