CN210326030U

CN210326030U - Novel lithium ion battery cell

Info

Publication number: CN210326030U
Application number: CN201921644288.0U
Authority: CN
Inventors: 王智
Original assignee: Shenzhen Zhongtaisheng Technology Co Ltd
Current assignee: Shenzhen Zhongtaisheng Technology Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-04-14
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a novel lithium ion battery cell, which comprises an outer shell, a graphite layer, a copper foil, a negative smear, a diaphragm, a positive smear, an aluminum foil and a lithium iron phosphate layer, a graphite layer in the vertical direction is fixedly attached to the inner side of the front end of the outer shell in an abutting manner, a copper foil in the vertical direction is fixedly attached to the rear end of the graphite layer in an abutting manner, the rear end of the copper foil is attached and fixed with a vertical negative smear, the rear end of the negative smear is attached and fixed with a vertical diaphragm, the rear end of the diaphragm is attached and fixed with a vertical anode smear, the rear end of the anode smear is attached and fixed with a vertical aluminum foil, the aluminium foil rear end pastes and leans on the lithium iron phosphate layer that is fixed with vertical direction, lithium iron phosphate layer rear end pastes with outside casing rear end inboard and leans on, the utility model discloses simple structure can provide the protection to the lithium ion cell in the work, ensures lithium ion cell's work efficiency.

Description

Novel lithium ion battery cell

Technical Field

The utility model relates to a novel lithium ion battery cell.

Background

The principle of the polymer lithium ion battery is the same as that of liquid lithium, and the main difference is that the electrolyte is different from the liquid lithium. The main structure of the battery comprises three elements of a positive electrode, a negative electrode and an electrolyte. The polymer lithium ion battery is a battery system in which a polymer material is used as a main battery system in at least one or more of the three main structures. In the polymer lithium ion battery system developed at present, the polymer material is mainly applied to the positive electrode and the electrolyte. The positive electrode material includes conductive polymer or inorganic compound used in common lithium ion battery, and the electrolyte may be solid or colloidal polymer electrolyte or organic electrolyte.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel lithium ion battery cell to solve above-mentioned technical problem.

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

the utility model provides a novel lithium ion battery cell, includes outside casing, graphite layer, copper foil, negative pole smear, diaphragm, anodal smear, aluminium foil, lithium iron phosphate layer, outside casing front end inboard is pasted and is leaned on the graphite layer that is fixed with vertical direction, the copper foil that is fixed with vertical direction is pasted to graphite layer rear end, the copper foil rear end is pasted and be fixed with the negative pole smear of vertical direction, negative pole smear rear end is pasted and lean on the diaphragm that is fixed with vertical direction, the diaphragm rear end is pasted and paste the anodal smear that is fixed with vertical direction, anodal smear rear end is pasted and is fixed with the aluminium foil of vertical direction, the aluminium foil rear end is pasted and is fixed with the lithium iron phosphate layer of vertical direction, lithium iron phosphate layer rear end pastes with outside.

On the basis of the technical scheme, the right part of the upper end of the negative smear is fixedly provided with a negative end in the vertical direction, and the negative end vertically penetrates through the right part of the upper end of the outer shell and extends out.

On the basis of the technical scheme, the left part of the upper end of the positive smear is fixed with a positive end in the vertical direction, and the positive end vertically penetrates through the left part of the upper end of the external shell and extends out.

On the basis of the technical scheme, the barrier layer in the vertical direction is embedded in the outer shell, and the protective layer in the vertical direction is embedded on the inner side of the barrier layer.

On the basis of the technical scheme, the blocking layer is made of a PET material, and the protective layer is made of a silicon rubber material.

Compared with the prior art, the utility model has the advantages of it is following: when the battery is charged, lithium ions are generated on the lithium iron phosphate, the generated lithium ions move to the negative electrode through the diaphragm, and the lithium ions embedded in the graphite layer are separated when the battery is discharged and move back to the positive electrode through the diaphragm. The inoxidizing coating prevents that its operating time is long and produce the weeping phenomenon at lithium ion battery cell during operation to and influence electric core work efficiency's problem under the condition that the temperature is on the high side or on the low side, the barrier layer then mainly plays waterproof effect, prevents that water from oozing into electric core inside and producing the influence to it, the utility model discloses simple structure can provide the protection to the lithium ion battery cell in the work, ensures lithium ion battery cell's work efficiency.

Drawings

Fig. 1 is an external structural view of the present invention.

Fig. 2 is an internal cross-sectional view of the outer housing of the present invention.

Fig. 3 is an inner side layered view of the outer housing of the present invention.

In the figure: 1. the device comprises an external shell, 2, a graphite layer, 3, a copper foil, 4, a negative electrode smear, 5, a diaphragm, 6, a positive electrode smear, 7, an aluminum foil, 8, a lithium iron phosphate layer, 9, a negative electrode end, 10, a positive electrode end, 11, a blocking layer, 12 and a protective layer.

Detailed Description

The invention is explained in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-3, a novel lithium ion battery cell comprises an external shell 1, a graphite layer 2, a copper foil 3, a negative smear 4, a diaphragm 5, a positive smear 6, an aluminum foil 7, and a lithium iron phosphate layer 8, and is characterized in that: the utility model discloses a lithium iron phosphate battery, including outer casing 1, graphite layer 2, diaphragm 5, positive smear 6, aluminium foil 7, lithium iron phosphate layer 8 rear end and the inboard paste of 1 rear end of outer casing are pasted and are fixed with vertical direction, the 2 rear ends of graphite layer paste and lean on the copper foil 3 that is fixed with vertical direction, 3 rear ends of copper foil paste and lean on the negative pole smear 4 that is fixed with vertical direction, 4 rear ends of negative pole smear paste and lean on the diaphragm 5 that is fixed with vertical direction, 5 rear ends of diaphragm paste and lean on the positive smear 6 that is fixed with vertical direction, 6 rear ends of positive pole smear paste and lean on the aluminium foil 7 that is fixed with vertical direction, 7 rear ends of aluminium.

The right part of the upper end of the negative smear 4 is fixed with a negative end 9 in the vertical direction, and the negative end 9 vertically penetrates through the right part of the upper end of the outer shell 1 to extend out.

The left part of the upper end of the positive smear 6 is fixed with a positive end 10 in the vertical direction, and the positive end 10 vertically penetrates through the left part of the upper end of the external shell 1 to extend out.

The inside barrier layer 11 that has the vertical direction that has inlayed of outside casing 1, barrier layer 11 inboard is inlayed and is had vertical direction's inoxidizing coating 12.

The barrier layer 11 is made of a PET material, and the protective layer 12 is made of a silicone rubber material.

The utility model discloses a theory of operation: when the battery is charged, lithium ions are generated on the lithium iron phosphate, the generated lithium ions move to the negative electrode through the diaphragm, and the lithium ions embedded in the graphite layer are separated when the battery is discharged and move back to the positive electrode through the diaphragm. The protective layer prevents the leakage phenomenon caused by long working time of the lithium ion battery cell during working and the problem of influencing the working efficiency of the battery cell under the condition of higher or lower temperature, and the barrier layer mainly plays a role in preventing water from permeating into the battery cell to influence the battery cell.

The foregoing is a preferred embodiment of the present invention, and for those skilled in the art to understand the teaching of the present invention, the changes, modifications, replacements and variations to the embodiments will still fall within the protection scope of the present invention without departing from the principle and spirit of the present invention.

Claims

1. The utility model provides a novel lithium ion battery cell, includes outside casing (1), graphite layer (2), copper foil (3), negative pole smear (4), diaphragm (5), anodal smear (6), aluminium foil (7), lithium iron phosphate layer (8), its characterized in that: outside casing (1) front end inboard pastes graphite layer (2) that is fixed with vertical direction, graphite layer (2) rear end pastes and leans on copper foil (3) that is fixed with vertical direction, copper foil (3) rear end pastes and leans on negative smear (4) that are fixed with vertical direction, negative smear (4) rear end pastes and leans on diaphragm (5) that are fixed with vertical direction, diaphragm (5) rear end pastes and leans on anodal smear (6) that are fixed with vertical direction, anodal smear (6) rear end pastes and leans on aluminium foil (7) that are fixed with vertical direction, aluminium foil (7) rear end pastes and leans on lithium iron phosphate layer (8) that are fixed with vertical direction, lithium iron phosphate layer (8) rear end and outside casing (1) rear end inboard paste and lean on.

2. The novel lithium ion battery cell of claim 1, wherein: the cathode smear (4) is fixed with the cathode end (9) of vertical direction in the upper end right part, the cathode end (9) vertically runs through the right part in the upper end of the outer shell (1) and stretches out.

3. The novel lithium ion battery cell of claim 1, wherein: the positive smear (6) is characterized in that a positive end (10) in the vertical direction is fixed at the left part of the upper end of the positive smear (6), and the positive end (10) vertically penetrates through the left part of the upper end of the outer shell (1) to extend out.

4. The novel lithium ion battery cell of claim 1, wherein: the inside barrier layer (11) that has the vertical direction that has inlayed of outside casing (1), the inoxidizing coating (12) of vertical direction are inlayed to barrier layer (11) inboard.

5. The novel lithium ion battery cell of claim 4, wherein: the barrier layer (11) is made of a PET material, and the protective layer (12) is made of a silicon rubber material.