CN201645921U

CN201645921U - Metal lithium belt with protective film and production line thereof

Info

Publication number: CN201645921U
Application number: CN2009202512193U
Authority: CN
Inventors: 陈强; 牟瀚波; 贾振勇
Original assignee: TIANJIN CHINA ENERGY LITHIUM CO Ltd
Current assignee: TIANJIN CHINA ENERGY LITHIUM CO Ltd
Priority date: 2009-12-02
Filing date: 2009-12-02
Publication date: 2010-11-24
Anticipated expiration: 2019-12-02

Abstract

The utility model discloses a metal lithium belt with a protective film, wherein the surface of the metal lithium belt is provided with a lithium carbonate layer. The utility model further discloses a production line of the metal lithium belt with environment of producing technique, wherein the production line of the metal lithium belt is arranged in a glove box. By adopting the structural form that the production line of the metal lithium belt is arranged in the glove box which is filled with high-pure argon or mixed gas of argon and carbon dioxide, the utility model leads the extruding, forming and machining of the metal lithium belt to be preformed under the protection environment of argon, leads the metal lithium and the carbon dioxide to be reacted to generates a lithium carbonate protective film on the surface, uses the production line of the metal lithium belt to produce the lithium belt, can effectively prevent the surface of the lithium belt from being nitrided, can reduce the production cost and the energy consumption, and is convenient for passing through the lithium-ion as the lithium carbonate film is more loose than the lithium nitride film, therefore, the electrochemical property of the metal lithium belt with the lithium carbonate protective film is superior to that of the metal lithium belt with the lithium nitride film.

Description

The metal lithium bands and the production line thereof that have diaphragm

Technical field

The utility model relates to a kind of metal lithium bands, particularly a kind of metal lithium bands that has diaphragm.The utility model also relates to the above-mentioned metal lithium bands production line that has diaphragm.

Background technology

At present, the production technology environment of metal lithium bands all adopts the drying room form.Production equipment and lithium metal and operating personnel all are in the drying room.Because personnel's breathing and airborne nitrogen etc. contact with metal lithium bands, very easily make the metal lithium bands surface produce nitrogenize, influence the electric conductivity of metal lithium bands as cathode of lithium battery.Dehumidification equipment need consume a large amount of energy, increases production cost and energy resource consumption.The lithium band that drying room is produced, the surface is a lithium nitride.The densification of lithium nitride film is hard, and as lithium cell negative pole, lithium ion should not pass through, and therefore when the initial stage discharge of lithium electricity, hysteresis appears in voltage.

The utility model content

The utility model can improve metal lithium bands and the production line thereof that chemical property has diaphragm for the technical problem that exists in the solution known technology provides a kind of.

A kind of technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of metal lithium bands that has diaphragm, the surface of described metal lithium bands is provided with the lithium carbonate layer.

The utility model also provides another kind of technical scheme to be: a kind of metal lithium bands production line that carries the production technology environment, described metal lithium bands production line is installed in the glove box.

Advantage and the good effect that the utlity model has are: adopt the metal lithium bands production line is installed in version in the glove box that is full of high-purity argon gas or argon gas and carbon dioxide gas mixture, metal lithium bands extrusion modling processing is carried out under the argon shield environment, lithium metal and carbon dioxide reaction generate the lithium carbonate diaphragm on the surface, use this metal lithium bands production line to produce the lithium band, can effectively prevent the nitrogenize of lithium belt surface, reduce production costs and energy resource consumption; The lithium carbonate film is loose than the lithium nitride film, is convenient to lithium ion and passes through, and therefore, the chemical property that has a metal lithium bands of lithium carbonate diaphragm is better than the metal lithium bands with the lithium nitride film.

Description of drawings

Fig. 1 is the structural representation that the utility model has the metal lithium bands of diaphragm;

Fig. 2 is the structural representation that the utility model carries the metal lithium bands production line of production technology environment.

Among the figure: 1, hermatic door; 2, rubber gloves; 3, gloves hole; 4, charging transition chamber; 5, casing; 6, extruder; 7, mould; 8, stationary guide roller; 9, dancer; 10, lithium band; 11, lithium roll coil of strip dish; 12, windowpane; 13, package post; 14, discharging transition chamber; 15, lithium carbonate diaphragm.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1～Fig. 2, a kind of metal lithium bands production line that carries the production technology environment of the utility model, be characterized in: the metal lithium bands production line is installed in the glove box.

In casing 5, extruder 6 is installed on the pedestal, extrudes lithium band 10 by the mould on the extruder 7, and lithium band 10 is through stationary guide roller 8, and the deflector roll 9 that floats is wound on the lithium roll coil of strip dish 11, and reel 11 is by motor-driven.Stationary guide roller 8, dancer 9, lithium roll coil of strip dish 11 are installed on the fixed support.Dancer 9 is the tension force measuring roll, and control lithium band makes the rolling tension stability.

Package post 13 is installed in the casing 5.Have gloves hole 3 on casing 5 both sides box walls, be sealed and installed with rubber gloves 2 on the gloves hole 3, be used for manually-operated.Top seal is equipped with glass 12, is convenient to observation.Casing 5 forward and backward faces are equipped with transition chamber 4,14, make transition chamber and casing 5, transition chamber 4,14 and air communication or isolated by hermatic door 1.Be convenient to charging and discharging, keep casing 5 interior ar gas environments not to be damaged.Transition chamber is discharged air by applying argon gas.

Extruder 6 is selected vertical extruder for use, and lithium band 10 adopts dish 11 rollings of curling.Under ar gas environment, the dish that curls packs with the aluminium plastic composite packaging bag.

In above-mentioned casing 5, the transition chamber 4,14 is the non-air environment, is full of high-purity argon gas or argon gas and carbon dioxide gas mixture.The carbon dioxide gas body burden is at 200～2000ppm.

Above-mentioned casing 5 internal gas pressures remain on 1.0001～1.002Mp barotropic state.

Operation principle of the present utility model:

In the high-purity argon gas casing, place the metal lithium bands single lead screw ex truding briquetting machine; The lithium tape winding apparatus; Lithium band packaging facilities, glove box need seal; Inside is full of high-purity argon gas or argon gas and carbon dioxide gas mixture; and make internal pressure be in 1.0001～1.002Mp slight positive pressure state; metal lithium bands extrusion modling processing is carried out under high-purity argon gas protection environment; lithium metal and carbon dioxide reaction generate lithium carbonate diaphragm 15 on the surface; operating personnel are by the circular hole on the glove box tank wall; emgloves is installed on the circular hole, hand is stretched in the case operate.Tank wall is equipped with glass.Can observe by glass and produce and operation.Glove box charging, discharge end are provided with transition chamber respectively, but isolated with the switch hermatic door between transition chamber and main tank and the air.Transition chamber can fill row's argon gas separately.

Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.

Claims

1. a metal lithium bands that has diaphragm is characterized in that, the surface of described metal lithium bands is provided with the lithium carbonate layer.

2. a metal lithium bands production line that carries the production technology environment is characterized in that, described metal lithium bands production line is installed in the glove box.