CN214625182U

CN214625182U - Soft package lithium battery

Info

Publication number: CN214625182U
Application number: CN202120334634.6U
Authority: CN
Inventors: 王俊; 王丹; 王宝婕; 罗界飞; 王嘉伟
Original assignee: Jiangsu Hengtong Lighting Group Co Ltd
Current assignee: Jiangsu Hengtong Lighting Group Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-11-05
Anticipated expiration: 2031-02-05

Abstract

The utility model provides a soft-packing lithium cell, include: the soft package shell comprises an outer surface layer, an insulating layer, a composite layer and a packaging film, wherein the outer surface layer, the insulating layer, the composite layer and the packaging film are sequentially arranged from outside to inside, and the outer surface layer, the insulating layer, the composite layer and the packaging film are mutually bonded; the fixing frame is positioned in the inner cavity of the soft package shell. The utility model discloses a soft package shell, mount, the setting of electrically conductive mechanism and baffle, be convenient for assemble lithium cell electricity core, increase the practicality of lithium cell, can effectively promote the fire-retardant waterproof performance and the insulating effect of soft-packing lithium cell, it is relatively poor to have solved the soft-packing lithium cell security of using at present, be not convenient for assemble lithium cell electricity core, and the insulating properties of lithium cell is relatively poor, fire-retardant waterproof ability is not good, lead to the problem that the lithium cell explodes to appear easily, and then can prolong the life of soft-packing lithium cell.

Description

Soft package lithium battery

Technical Field

The utility model relates to a lithium cell field especially relates to a soft-packing lithium cell.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The soft package lithium cell sheathes a layer of polymer shell at liquid lithium ion battery, structurally adopts the plastic-aluminum membrane packing, and soft package battery can only bulge to split at most under the condition that the potential safety hazard takes place. The soft package lithium battery has good safety performance, and has the characteristics of light weight, large capacity and small internal resistance.

In order to satisfy the operation requirement of equipment, need generally establish ties a plurality of laminate polymer battery or parallelly connected equipment, but the flexible package lithium cell security that uses at present is relatively poor, is not convenient for assemble lithium battery electric core, and the insulating properties of lithium cell is relatively poor, and fire-retardant waterproof ability is not good, leads to the lithium cell to appear exploding easily, leads to the fact the injury to the user.

Therefore, the flexible package lithium battery is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a soft-packing lithium cell to solve the problem that proposes among the above-mentioned background art.

The utility model provides a pair of soft-packing lithium cell, include:

the soft package shell comprises an outer surface layer, an insulating layer, a composite layer and a packaging film, wherein the outer surface layer, the insulating layer, the composite layer and the packaging film are sequentially arranged from outside to inside, and the outer surface layer, the insulating layer, the composite layer and the packaging film are mutually bonded;

the fixing frame is positioned in the inner cavity of the soft package shell, the packaging film is bonded with the fixing frame, the right side of the fixing frame is bolted with an installation seat, a positive electrode and a negative electrode are respectively embedded in the surface of the installation seat, and a partition plate is bolted in the inner cavity of the fixing frame;

the conductive mechanism comprises a metal wire, a conductive sheet and a connecting column, the metal wire is embedded in the fixing frame, the conductive sheet is bolted on the inner wall of the fixing frame and is fixedly connected with the metal wire, the connecting column is fixedly installed on the left side of the mounting seat, and the connecting column and the metal wire are welded.

Preferably, the composite layer comprises a flame-retardant layer, an adhesive layer and a waterproof layer, the flame-retardant layer is located on the inner side of the insulating layer, the waterproof layer is located on the outer side of the packaging film, the adhesive layer is located between the flame-retardant layer and the waterproof layer, and the flame-retardant layer and the waterproof layer are connected and fixed through the adhesive layer.

Preferably, the flame-retardant layer is made of flame-retardant rubber, the bonding layer is formed by curing an epoxy resin adhesive, and the waterproof layer is made of an organic silicon resin material.

Preferably, the outer surface layer and the packaging film are both made of aluminum plastic films, and the insulating layer is formed by interweaving glass fibers.

Preferably, the inner wall fixed mounting of mount has the locating plate, the locating plate is located the both sides of baffle respectively, and the locating plate is the symmetry setting.

Preferably, the mount pad runs through to the outside of soft packet of shell, soft packet of shell's surface is provided with sealing coating, and sealing coating encircles the outside at the mount pad.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a soft package shell, mount, electrically conductive mechanism and baffle setting, be convenient for assemble lithium cell electricity core, increase the practicality of lithium cell, can effectively promote the fire-retardant waterproof performance and the insulating effect of soft-packing lithium cell, it is relatively poor to have solved the soft-packing lithium cell security that uses at present, be not convenient for assemble lithium cell electricity core, and the insulating properties of lithium cell is relatively poor, fire-retardant waterproof ability is not good, lead to the easy problem that explodes of lithium cell, and then can prolong the life of soft-packing lithium cell;

2. the utility model discloses a setting through fire-retardant layer, adhesive linkage and waterproof layer can make flexible package lithium cell have fire-retardant waterproof ability, and then can promote the security of flexible package lithium cell, prevents that the flexible package lithium cell from exploding, through the special setting of fire-retardant layer, adhesive linkage and waterproof layer, can effectively promote the fire-retardant waterproof performance and the insulating effect of lithium cell, and can make and be connected stably between fire-retardant layer and the waterproof layer;

3. the utility model discloses a setting of extexine, packaging film and insulating layer can increase soft-packaged shell's structural strength and insulating effect, avoids the lithium cell to explode, and then can prolong the life of lithium cell, through the setting of locating plate, is convenient for install lithium cell electricity core fixedly, and then can promote the production efficiency of soft-packing lithium cell, through seal coating's setting, can increase the sealed effect of soft-packing lithium cell, prevents that moisture infiltration from causing the lithium cell short circuit.

Drawings

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

fig. 2 is a schematic top view of a partial structure of the present invention;

fig. 3 is a schematic view of the structure lamination of the soft package shell of the present invention;

fig. 4 is a schematic view showing the structure stacking of the composite layer according to the present invention.

Reference numbers in the figures: 1. a soft package housing; 11. an outer skin layer; 12. an insulating layer; 13. compounding layers; 131. a flame retardant layer; 132. an adhesive layer; 133. a waterproof layer; 14. packaging the film; 2. a mounting seat; 3. a positive electrode; 4. a negative electrode; 5. a fixed mount; 6. a conductive mechanism; 61. a metal wire; 62. a conductive sheet; 63. connecting columns; 7. a partition plate; 8. positioning a plate; 9. and (5) sealing the coating.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural perspective view, fig. 2 is a schematic structural plan view of the present invention, fig. 3 is a schematic structural stacking view of the soft package shell of the present invention, and fig. 4 is a schematic structural stacking view of the composite layer of the present invention. A flexible-package lithium battery comprising: the flexible package comprises a flexible package shell 1, a fixing frame 5 and a conductive mechanism 6, wherein the flexible package shell 1 comprises an outer surface layer 11, an insulating layer 12, a composite layer 13 and a packaging film 14, the outer surface layer 11, the insulating layer 12, the composite layer 13 and the packaging film 14 are sequentially arranged from outside to inside, and the outer surface layer 11, the insulating layer 12, the composite layer 13 and the packaging film 14 are mutually bonded; the fixing frame 5 is positioned in the inner cavity of the soft package shell 1, the packaging film 14 is bonded with the fixing frame 5, the right side of the fixing frame 5 is bolted with the mounting seat 2, the surface of the mounting seat 2 is respectively embedded with the positive electrode 3 and the negative electrode 4, and the inner cavity of the fixing frame 5 is bolted with the partition plate 7; the conducting mechanism 6, the conducting mechanism 6 includes a metal wire 61, a conducting strip 62 and a connecting column 63, the metal wire 61 is embedded in the fixing frame 5, the conducting strip 62 is bolted on the inner wall of the fixing frame 5, the conducting strip 62 is fixedly connected with the metal lead 61, the connecting column 63 is fixedly arranged at the left side of the mounting seat 2, the connecting column 63 is welded with the metal lead 61, through the arrangement of the soft package shell 1, the fixing frame 5, the conductive mechanism 6 and the partition plate 7, the battery cell of the lithium battery is convenient to assemble, the practicability of the lithium battery is improved, can effectively improve the flame-retardant and waterproof performance and the insulation effect of the flexible package lithium battery, solves the problems that the safety of the flexible package lithium battery used at present is poor, the battery core of the lithium battery is not convenient to assemble, and the insulating property of the lithium battery is poor, the flame-retardant waterproof capability is poor, so that the lithium battery is easy to explode, and the service life of the flexible package lithium battery can be prolonged.

Further, the composite layer 13 includes the flame retardant coating 131, the adhesive linkage 132 and the waterproof layer 133, the flame retardant coating 131 is located the inboard of insulating layer 12, the waterproof layer 133 is located the outside of packaging film 14, the adhesive linkage 132 is located between flame retardant coating 131 and the waterproof layer 133, and connect fixedly through the adhesive linkage 132 between flame retardant coating 131 and the waterproof layer 133, through flame retardant coating 131, the setting of adhesive linkage 132 and waterproof layer 133, can make the soft-packing lithium cell have fire-retardant waterproof ability, and then can promote the security of soft-packing lithium cell, prevent that the explosion from appearing in the soft-packing lithium cell.

Further, fire-retardant layer 131 adopts fire-retardant rubber to make, and adhesive linkage 132 is formed by the solidification of epoxy adhesive, and waterproof layer 133 adopts the organic silicon resin material, through fire-retardant layer 131, adhesive linkage 132 and waterproof layer 133's special setting, can effectively promote the fire-retardant waterproof performance and the insulating effect of lithium cell, and can make and be connected stably between fire-retardant layer 131 and the waterproof layer 133.

Further, extexine 11 and packaging film 14 all adopt the plastic-aluminum membrane to make, and insulating layer 12 is interweaved by glass fiber and forms, through the setting of extexine 11, packaging film 14 and insulating layer 12, can increase soft packet of shell 1's structural strength and insulating effect, avoids the lithium cell explosion to appear, and then can prolong the life of lithium cell.

Further, the inner wall fixed mounting of mount 5 has locating plate 8, and locating plate 8 is located the both sides of baffle 7 respectively, and locating plate 8 is the symmetry setting, through the setting of locating plate 8, is convenient for install fixedly lithium cell electricity core, and then can promote the production efficiency of soft-packing lithium cell.

Further, mount pad 2 runs through to the outside of soft packet of shell 1, and the surface of soft packet of shell 1 is provided with seal coat 9, and seal coat 9 encircles in the outside of mount pad 2, through seal coat 9's setting, can increase the sealed effect of soft package lithium cell, prevents that moisture infiltration from causing the lithium cell short circuit.

The utility model provides a pair of flexible package lithium cell's theory of operation as follows:

at first install lithium battery core at the top of locating plate 8, and make lithium battery core's positive negative pole and the laminating of corresponding conducting strip 62, then with soft-packaged shell 1 cladding in the outside of mount 5 can, soft-packaged lithium battery during operation, lithium battery core's electric current passes through conducting strip 62, wire 61 flows to spliced pole 63, and then can carry the electric current to lithium battery's positive electrode 3 and negative electrode 4, composite bed 13 can increase the fire-retardant waterproof ability of soft-packaged lithium battery, and then can promote soft-packaged lithium battery's security, prevent that the explosion from appearing in the soft-packaged lithium battery, extexine 11, packaging film 14 and insulating layer 12 can increase soft-packaged shell 1's structural strength and insulating effect, avoid the lithium battery to appear the explosion, sealing coating 9 prevents that moisture infiltration from causing the lithium cell short circuit, and then can prolong the life of lithium battery.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A flexible package lithium battery, comprising:

the soft package shell (1) comprises an outer surface layer (11), an insulating layer (12), a composite layer (13) and a packaging film (14), wherein the outer surface layer (11), the insulating layer (12), the composite layer (13) and the packaging film (14) are sequentially arranged from outside to inside, and the outer surface layer (11), the insulating layer (12), the composite layer (13) and the packaging film (14) are mutually bonded;

the fixing frame (5) is positioned in the inner cavity of the soft package shell (1), a packaging film (14) is bonded with the fixing frame (5), the right side of the fixing frame (5) is connected with an installation seat (2) in a bolted mode, a positive electrode (3) and a negative electrode (4) are embedded in the surface of the installation seat (2) respectively, and a partition plate (7) is connected with the inner cavity of the fixing frame (5) in a bolted mode;

conductive mechanism (6), conductive mechanism (6) include wire (61), conducting strip (62) and spliced pole (63), wire (61) inlays the inside of establishing in mount (5), conducting strip (62) bolt is at the inner wall of mount (5), and fixed connection between conducting strip (62) and wire (61), spliced pole (63) fixed mounting is in the left side of mount pad (2), and welds between spliced pole (63) and wire (61).

2. The lithium battery with the flexible package as claimed in claim 1, wherein the composite layer (13) comprises a flame retardant layer (131), an adhesive layer (132) and a waterproof layer (133), the flame retardant layer (131) is located on the inner side of the insulating layer (12), the waterproof layer (133) is located on the outer side of the packaging film (14), the adhesive layer (132) is located between the flame retardant layer (131) and the waterproof layer (133), and the flame retardant layer (131) and the waterproof layer (133) are fixedly connected through the adhesive layer (132).

3. The lithium battery with flexible package as claimed in claim 2, wherein the flame retardant layer (131) is made of flame retardant rubber, the adhesive layer (132) is formed by curing epoxy resin adhesive, and the waterproof layer (133) is made of silicone resin.

4. The lithium battery with flexible package as claimed in claim 1, characterized in that the outer surface layer (11) and the packaging film (14) are made of aluminum plastic film, and the insulating layer (12) is formed by interweaving glass fibers.

5. The flexibly-packaged lithium battery according to claim 1, wherein the inner wall of the fixing frame (5) is fixedly provided with positioning plates (8), the positioning plates (8) are respectively positioned at two sides of the partition plate (7), and the positioning plates (8) are symmetrically arranged.

6. The lithium battery with flexible package according to claim 1, characterized in that the mounting seat (2) penetrates to the outside of the flexible package casing (1), the surface of the flexible package casing (1) is provided with a sealing coating (9), and the sealing coating (9) surrounds the outside of the mounting seat (2).