CN202275882U - Lithium battery - Google Patents

Abstract

The utility model relates to a lithium battery. A lithium battery is composed of a case, a positive current collector, a lithium sheet, a bottom film, an edge film, a carbon pack, a cover film, a cover group and a glass insulator, and the lithium sheet, the edge film, and the carbon pack are sequentially stacked in the case And the positive current collector, the carbon-coated particles are not larger than 10 meshes, the lower part of the carbon bag is provided with a bottom film, the upper part of the carbon bag is provided with a cover film, the upper end of the shell is provided with a cover group, the center of the cover group is provided with a glass insulator, and the positive electrode current collector passes through The center of the cover film and glass insulator protrude from the housing. The utility model has good contact performance between the 1.5mm granular carbon bag and the 3-5mm rhombic positive electrode current collector, so that the voltage of the lithium battery is high, the conductivity is good, and the reliability is strong.

Description

a lithium battery

technical field

The utility model relates to a lithium battery.

Background technique

Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. At present, the positive electrode materials that have been actually used in lithium-ion batteries are basically carbon materials, such as artificial graphite, natural graphite, mesocarbon microspheres, petroleum coke, carbon fiber, pyrolytic resin carbon, etc. The existing large-area positive electrode has poor contact with the current collector steel mesh or nickel mesh, which is easy to loosen, has low voltage and poor conductivity.

Contents of the invention

The purpose of the utility model is to provide a lithium battery with high battery voltage and good conductivity.

The technical scheme of the utility model is:

A lithium battery is composed of a case, a positive current collector, a lithium sheet, a bottom film, an edge film, a carbon pack, a cover film, a cover group and a glass insulator, and the lithium sheet, the edge film, and the carbon pack are sequentially stacked in the case And the positive current collector, the carbon-coated particles are not larger than 10 meshes, the lower part of the carbon bag is provided with a bottom film, the upper part of the carbon bag is provided with a cover film, the upper end of the shell is provided with a cover group, the center of the cover group is provided with a glass insulator, and the positive electrode current collector passes through The center of the cover film and glass insulator protrude from the housing.

Specifically, a nickel mesh is also arranged on the positive electrode current collector, and the lower part of the nickel mesh is trapezoidal.

Specifically, the positive electrode current collector has a circular cross section and a diameter of 3-5 mm.

The beneficial effect of the utility model is that: the 1.5mm particle carbon bag has good contact performance with the nickel mesh on the positive current collector, so that the voltage of the lithium battery is high, the conductivity is good, and the reliability is strong.

Description of drawings

Fig. 1 is a structural representation of the utility model.

1 Shell 2 Lithium sheet 3 Edge film 4 Positive current collector 5 Cover film

6 Base Film 7 Cover Group 8 Glass Insulator 9 Nickel Mesh.

Detailed ways

A lithium battery, consisting of a case 1, a positive current collector 4, a lithium sheet 2, a bottom film 6, an edge film 3, a carbon bag, a cover film 5, a cover group 7 and a glass insulator 8, which are stacked sequentially in the case 1 Lithium sheet 2, edge film 3, carbon bag and positive electrode current collector 4 are placed. The positive electrode current collector 4 has a circular cross section and a diameter of 3 mm. The positive electrode current collector 4 is also provided with a nickel mesh 9. The lower part of the nickel mesh 9 is trapezoidal. The diameter of the carbon-coated particles is 1.5 mm. The lower end of the shell 1 is provided with a bottom film 6, and the upper part of the carbon pack is provided with a cover film 5. The edge film 3, the bottom film 6 and the cover film 5 are made of glass fibers. The upper end of the shell 1 A cover set 7 is provided, and a glass insulator 8 is arranged in the center of the cover set 7, and the positive current collector 4 passes through the cover film 5 and the center of the glass insulator 8 and extends out of the casing 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not limit it; although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand that: still The specific implementation of the utility model can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solution of the utility model, all of them should be included in the scope of the technical solution claimed by the utility model.

Claims (3)

1. A lithium battery is composed of a casing, a positive current collector, a lithium sheet, a bottom film, an edge film, a carbon bag, a cover film, a cover group and a glass insulator, and is characterized in that: the lithium sheets are stacked successively in the casing , edge film, carbon bag and positive current collector, the carbon bag particles are not larger than 10 mesh, the bottom film is set on the lower part of the carbon bag, the cover film is set on the upper part of the carbon bag, the upper end of the shell is set with a cover group, and the center of the cover group is provided with a glass insulator , the positive current collector protrudes out of the case through the cover film and the glass insulator. 2 . A lithium battery according to claim 1 , wherein a nickel mesh is further arranged on the positive electrode current collector, and the lower end of the nickel mesh is trapezoidal. 3 . The lithium battery according to claim 1 , wherein the positive electrode current collector has a circular cross section and a diameter of 3-5 mm.

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