CN215342734U

CN215342734U - Ultra-thin polymer battery

Info

Publication number: CN215342734U
Application number: CN202121685132.4U
Authority: CN
Inventors: 鲜海泉; 谢建锋; 周玉杰
Original assignee: Huizhou Youju Lithium Energy Technology Co ltd
Current assignee: Huizhou Youju Lithium Energy Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-28
Anticipated expiration: 2031-07-23

Abstract

The utility model belongs to the technical field of batteries, and discloses an ultra-thin polymer battery, which comprises an outer shell, wherein two negative pole metal sheets are fixed at the middle position inside the outer shell, a diaphragm bag is arranged outside the negative pole metal sheets, a concave positive pole metal sheet is fixed on the outer wall of the diaphragm bag, a buffer layer is fixed on the outer wall of the positive pole metal sheet, a bag body is uniformly fixed inside the buffer layer, inert gas is filled inside the bag body, an insulating column is connected to one side of the two negative pole metal sheets opposite to each other, one end of the insulating column, which is far away from the negative pole metal sheet, penetrates through the diaphragm bag and is connected with the positive pole metal sheet, by additionally arranging the buffer layer and the bag body, when the battery is pressed, the buffer layer and the bag body filled with the inert gas can effectively buffer the pressure, and the deformation or displacement of the positive pole sheet and the negative pole sheet inside the battery can be avoided, the occurrence of battery failure is prevented, and the service life of the polymer battery is prolonged.

Description

Ultra-thin polymer battery

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to an ultrathin polymer battery.

Background

The battery is a device which can convert chemical energy into electric energy in a cup, a groove or other containers or composite containers filled with electrolyte solution and metal electrodes to generate current, wherein the lithium polymer battery is also called a high-molecular lithium battery and is a chemical battery.

In chinese patent with application No. CN201521130598.2, an ultra-thin polymer battery is disclosed, which describes "by setting up a diaphragm bag, the diaphragm bag is fixed on a negative plate, and wraps up the negative plate, so as to avoid the dislocation between the diaphragm and the negative plate, and hold the negative plate by folding the positive plate in half, so as to avoid the dislocation between the positive plate and the diaphragm, and prevent the battery from malfunctioning", but the traditional polymer battery has poor buffering performance, and is pressed, the internal positive and negative plates of the battery are easily extruded and deformed or displaced, furthermore, the internal insulating performance of the traditional polymer battery is poor, and when the battery is pressed, the positive and negative plates are easily contacted and dangerous.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an ultra-thin polymer battery, which aims to solve the problems that the traditional polymer battery provided in the background technology has poor buffer performance, and positive and negative pole pieces in the battery are easy to extrude and deform or shift.

In order to achieve the purpose, the utility model provides the following technical scheme: ultra-thin polymer battery, including the shell body, the inside intermediate position department of shell body is fixed with two negative pole sheetmetals, the outside of negative pole sheetmetal is equipped with the diaphragm bag, the outward appearance wall of diaphragm bag is fixed with concave type anodal sheetmetal, the outward appearance wall of anodal sheetmetal is fixed with the buffer layer, the inside of buffer layer evenly is fixed with the utricule, the inside packing of utricule has inert gas, two one side that the negative pole sheetmetal carried on the back mutually is connected with the insulated column, the one end that the negative pole sheetmetal was kept away from to the insulated column runs through the diaphragm bag and links to each other with anodal sheetmetal.

Preferably, an insulating layer is fixed between the positive electrode metal sheet and the buffer layer.

Preferably, the outer wall of the outer shell is connected with a positive electrode pin and a negative electrode pin.

Preferably, a seal is bonded to an end portion of the outer shell, and the positive pin and the negative pin penetrate through the seal.

Preferably, a cavity is integrally formed between the negative electrode metal sheet and the diaphragm bag.

Preferably, the opposite sides of the two negative electrode metal sheets are coated with activated carbon layers.

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

(1) according to the utility model, the buffer layer and the capsule body are additionally arranged to wrap the outer sides of the positive and negative pole pieces, when the battery is pressed, the buffer layer and the capsule body filled with inert gas can effectively buffer the pressure, so that the positive and negative pole pieces in the battery are prevented from being extruded to deform or shift, the battery failure is prevented, and the service life of the polymer battery is prolonged.

(2) The utility model can further separate the positive and negative pole pieces by adding the insulating column, and avoid the positive and negative pole pieces from contacting when the battery is pressed.

Drawings

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

FIG. 2 is an external view of the present invention;

in the figure: 1. an outer housing; 2. a negative electrode metal piece; 3. a membrane bag; 4. an insulating column; 5. a positive electrode metal sheet; 6. an insulating layer; 7. a capsule body; 8. a cavity; 9. an activated carbon layer; 10. a buffer layer; 11. a seal; 12. a positive electrode pin; 13. and a negative electrode pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions: the ultrathin polymer battery comprises an outer shell 1, wherein two negative metal sheets 2 are fixed at the middle position inside the outer shell 1, a diaphragm bag 3 is arranged outside the negative metal sheets 2, a concave positive metal sheet 5 is fixed on the outer wall of the diaphragm bag 3, a buffer layer 10 is fixed on the outer wall of the positive metal sheet 5, a capsule body 7 is uniformly fixed inside the buffer layer 10, inert gas is filled inside the capsule body 7, when the battery is pressed, the buffer layer 10 wrapped outside the positive and negative plates and the capsule body 7 filled with the inert gas can effectively buffer the pressure, the deformation or displacement caused by the extrusion of the positive and negative plates inside the battery is avoided, the battery fault is prevented, the service life of the polymer battery is prolonged, one side of the two negative metal sheets 2, which are opposite to each other, is connected with an insulating column 4, one end of the insulating column 4, which is far away from the negative metal sheet 2, penetrates through the diaphragm bag 3 and is connected with the positive metal sheet 5, the additionally arranged insulating column 4 can further separate the positive and negative pole pieces, so that the positive and negative pole pieces are prevented from contacting when the battery is pressed.

Further, the insulating layer 6 is fixed between the positive electrode metal sheet 5 and the buffer layer 10, and the added insulating layer 6 can further increase the insulating performance inside the battery, thereby increasing the use safety.

Further, the outer wall of the outer shell 1 is connected with a positive electrode pin 12 and a negative electrode pin 13, the positive electrode pin 12 is led out from the positive electrode metal sheet 5, and the negative electrode pin 13 is led out from the negative electrode metal sheet 2.

Further, a seal 11 is bonded to the end of the outer shell 1, the positive pin 12 and the negative pin 13 penetrate through the seal 11, and the seal 11 is detachable, so that the components inside the outer shell 1 can be replaced conveniently.

Further, integrated into one piece has cavity 8 between negative pole sheetmetal 2 and the diaphragm bag 3, and cavity 8 makes to have a certain distance between negative pole sheetmetal 2 and the diaphragm bag 3, and insulating buffering effect is better, and the coating of one side that two negative pole sheetmetals 2 are relative has activated carbon layer 9.

The working principle and the using process of the utility model are as follows: when this battery is compressed, the buffer layer 10 of parcel in negative pole sheetmetal 2 and 5 outsides of positive pole sheetmetal and the utricule 7 that packs there is inert gas can effective buffer pressure, avoid the inside positive and negative pole piece extrusion of battery and take place to warp or shift, prevent battery trouble, the life of this polymer battery has been prolonged, in addition, the plus and negative pole piece can further be separated to the insulated column 4 of addding, the positive and negative pole piece contacts when avoiding the battery to be compressed, the insulating layer 6 of addding can further increase the inside insulating properties of this battery, the security of using has been increased, in addition, strip of paper used for sealing 11 on the shell body 1 can be dismantled, be convenient for change the external casing 1 internal component.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ultra-thin polymer battery, characterized by: including shell body (1), the inside intermediate position department of shell body (1) is fixed with two negative pole sheetmetals (2), the outside of negative pole sheetmetal (2) is equipped with diaphragm bag (3), the outward appearance wall of diaphragm bag (3) is fixed with concave type anodal sheetmetal (5), the outward appearance wall of anodal sheetmetal (5) is fixed with buffer layer (10), the inside of buffer layer (10) evenly is fixed with utricule (7), the inside packing of utricule (7) has inert gas, two one side that negative pole sheetmetal (2) were carried on the back mutually is connected with insulated column (4), the one end that negative pole sheetmetal (2) were kept away from in insulated column (4) runs through diaphragm bag (3) and links to each other with anodal sheetmetal (5).

2. The ultra-thin type polymer battery according to claim 1, wherein: an insulating layer (6) is fixed between the positive metal sheet (5) and the buffer layer (10).

3. The ultra-thin type polymer battery according to claim 1, wherein: the outer wall of the outer shell (1) is connected with a positive electrode pin (12) and a negative electrode pin (13).

4. The ultra-thin type polymer battery according to claim 3, wherein: the end part of the outer shell (1) is bonded with a seal (11), and the positive pin (12) and the negative pin (13) penetrate through the seal (11).

5. The ultra-thin type polymer battery according to claim 1, wherein: a cavity (8) is integrally formed between the negative metal sheet (2) and the diaphragm bag (3).

6. The ultra-thin type polymer battery according to claim 1, wherein: and one sides of the two negative metal sheets (2) opposite to each other are coated with activated carbon layers (9).