CN1941460A - Lithium thionyl chloride battery lithium anode and its surface treatment - Google Patents
Lithium thionyl chloride battery lithium anode and its surface treatment Download PDFInfo
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- CN1941460A CN1941460A CN 200610019798 CN200610019798A CN1941460A CN 1941460 A CN1941460 A CN 1941460A CN 200610019798 CN200610019798 CN 200610019798 CN 200610019798 A CN200610019798 A CN 200610019798A CN 1941460 A CN1941460 A CN 1941460A
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- lithium
- scraggly
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- colludes
- thionyl chloride
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Abstract
The invention is concerned with the lithium anode of the lithium thionyl chloride battery and the surface process method, it is: processes rolling press, or punching press, or counter pressing, or milling brushing for the lithium slice, creates the scraggly pattern that can increase the surface area of the lithium anode slice at one or two surfaces of the lithium slice. The invention can be used to the sub-tantalum battery that the lithium slice is the cathode, in order to reduce the voltage lag after storage.
Description
Technical field
The invention belongs to a kind of battery anode material, be specifically related to a kind of lithium thionyl chloride battery lithium anode and surface treatment method thereof.
Background technology
Present domestic lithium battery (disposable) has the carbon bag, the two kinds of forms of reeling, the carbon packet mode is that negative pole lithium loop is pressed in battery steel shell internal perisporium or concora crush in box hat at the end, under the condition of insulation, put into the carbon bag, and weld after inserting anodal core bar and cover plate, and inject and seal behind the electric liquid.Takeup type is positive and negative electrode to be isolated by barrier film be wound on the anodal core bar, and the lithium sheet is connected with box hat by lead-in wire, and welded cover plate is injected electric liquid, after sealing the rolling battery.The surface of existing lithium sheet anode all is planes, how to improve the discharge capability of battery in this case, alleviates the cell voltage hysteresis, is the problem that extensively exists at present.
The object of the present invention is to provide a kind of lithium thionyl chloride battery lithium anode and surface treatment method thereof, to address the above problem with large surface area.
The technical scheme that realizes one of the object of the invention is: lithium thionyl chloride battery lithium anode, it is the lithium anode sheet, is provided with the scraggly line that colludes that increases lithium anode sheet surface area on lithium anode sheet surface.
Two the technical scheme that realizes the object of the invention is: the processing method of lithium thionyl chloride battery lithium anode, it is the lithium sheet to be carried out roll extrusion or punching press or to pressing or polish-brush, make surface of lithium sheet or two surfaces produce the scraggly lines that collude that increase lithium anode sheet surface areas.
This invention makes the initial discharge ability can be better than the product that traditional approach is made, and it is in the inferior battery of lithium of negative pole with the lithium sheet that this method can be used for all, with after reducing it and depositing, and the problem that voltage delay, electric current do not increase.Its method is simple.
Fig. 1 lithium anode sheet I schematic surface
Fig. 2 lithium anode sheet II schematic surface
Fig. 3 rolling and processing schematic diagram
Fig. 4 punch process schematic diagram
Fig. 5 is to pressing the processing schematic diagram
Fig. 6 ER-2450 normal temperature 500 Europe discharge correlation curve figure
Embodiment
Embodiment 1
As shown in Figure 3, the lithium sheet is carried out rolling and processing: utilize pair of rollers lithium sheet to carry out roll extrusion, the surface of roller has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.After can carrying out roll extrusion earlier to the processing of lithium sheet, again the lithium sheet is put into battery case.Be earlier the lithium loop to be pressed in the battery steel shell internal perisporium in the present embodiment, in battery case the lithium sheet carried out roll extrusion again, 1 is battery steel shell among the figure, and the lithium loop presses 2 at battery steel shell 1 internal perisporium, and 3 is rolling wheel.
As shown in Figure 4, the lithium sheet is carried out punch process: utilize punch die that the lithium sheet is carried out punching press, the surface of punch die has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.After can carrying out punching press earlier to the processing of lithium sheet, again the lithium sheet is put into battery case.Be earlier lithium sheet concora crush, to be carried out punching press to the lithium sheet at the end in box hat in the present embodiment.1 is battery steel shell among the figure, and, 5 is punch die to lithium sheet 4 concora crush at the end in box hat 1.
As shown in Figure 5, the lithium sheet is carried out pressing processing: be that two rolling devices that are provided with are relatively carried out roll extrusion to two surfaces of lithium sheet, make two surfaces of lithium sheet produce the scraggly line that colludes that increases lithium anode sheet surface area, the surface of two rollers has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.The lithium sheet shearing that processes is put into battery container by barrier film with anodal the coincidence.6 is the lithium sheet among the figure, and 7,8 is two roll extrusion that are provided with relatively.
Embodiment 4
The lithium sheet is carried out polish-brush processing: be to utilize the surface to have the scraggly brush that colludes line the lithium sheet is carried out polish-brush, the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.
As shown in Figure 1, through above-mentioned work sheet mask the scraggly lithium sheet that colludes line that increases lithium anode sheet surface area is arranged, the scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform concave point.It shown in the figure corrugated.
As shown in Figure 2, through the two-sided scraggly lithium sheet that colludes line with increase lithium anode sheet surface area of above-mentioned processing, the scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform concave point.Be that one side is corrugated shown in the figure, another side is the triangle dentation.
After lithium sheet after the above-mentioned processing made battery, other parts of battery did not change, with its with do not process the lithium sheet and make battery and carry out discharge performance and detect:
1, normal temperature volume test: dead load 500 Ω (about 7mA), 7K Ω (about 0.5mA) are to 2.0V;
2, low temperature (40 ℃) volume test: dead load 7mA to 2.0V;
3, high temperature (125 ℃) volume test: dead load 7mA to 2.0V;
Detect as shown in Figure 6; Test data such as following table:
Capacity data:
| Numbering | Battery of the present invention | Without improved battery | ||
| Capacity | Normal temperature 500 Ω | 1 | 63.95h, 430.25mAh | 43.46h, 291.68 |
| 2 | 69.25h, 471.89mAh | 44.76h, 286.45mAh | ||
| Low temperature-40 | 3 | 142.4mAh | 0mAh | |
| 4 | 146.9mAh | 0mAh | ||
| 125 ℃ of 7mA of high temperature | 5 | 382.8mAh | 226.3 | |
| 6 | 391.4mAh | 119.1mAh | ||
| Illustrate: 1, low temperature discharge comes for can not put electricity substantially without the big electric current of improved battery.2, high temperature discharge be without improved battery cathode shell pucking expand 0.3,0.55mm, battery cathode shell bulging 0.08 of the present invention, 0.15mm | ||||
Performance evaluation:
| Classification | Battery of the present invention | Without improved battery | |
| Capacity | Normal temperature | Good | Bad |
| Cryogenic property | Good | Difference | |
| High-temperature behavior | Good | Relatively poor | |
Claims (9)
1, a kind of lithium thionyl chloride battery lithium anode, its lithium anode sheet is characterized in that being provided with on lithium anode sheet surface the scraggly line that colludes that increases lithium anode sheet surface area.
2, lithium thionyl chloride battery lithium anode according to claim 1 is characterized in that the scraggly line that colludes that increases lithium anode sheet surface area is located at face table of lithium anode sheet or two surfaces.
3, lithium thionyl chloride battery lithium anode according to claim 1 is characterized in that the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or concave point uniformly.
4, a kind of processing method of lithium thionyl chloride battery lithium anode, it is the lithium sheet to be carried out roll extrusion or punching press or to pressing or polish-brush, make surface of lithium sheet or two surfaces produce the scraggly lines that collude that increase lithium anode sheet surface areas.
5, as the processing method of lithium thionyl chloride battery lithium anode as described in the claim 4, it is characterized in that described roll extrusion is to utilize pair of rollers lithium sheet to carry out roll extrusion, the surface of roller has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.
6, as the processing method of lithium thionyl chloride battery lithium anode as described in the claim 4, it is characterized in that described punching press is to utilize punch die that the lithium sheet is carried out punching press, the surface of punch die has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.
7, as the processing method of lithium thionyl chloride battery lithium anode as described in the claim 4, it is characterized in that described is that two roll extrusion that are provided with are relatively carried out roll extrusion to two surfaces of lithium sheet to pressure, make two surfaces of lithium sheet produce the scraggly line that colludes that increases lithium anode sheet surface area, the surface of two rollers has the scraggly line that colludes, and the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.
8, as the processing method of lithium thionyl chloride battery lithium anode as described in the claim 4, it is characterized in that described polish-brush is to utilize the surface to have the scraggly brush that colludes line the lithium sheet is carried out polish-brush, the described scraggly line section that colludes is corrugated or triangle dentation or polygon abnormity or uniform salient point.
9,, it is characterized in that described processing places the lithium sheet in the battery case to finish as the processing method of lithium thionyl chloride battery lithium anode as described in the claim 4,5,6,8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019798 CN1941460A (en) | 2006-08-03 | 2006-08-03 | Lithium thionyl chloride battery lithium anode and its surface treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019798 CN1941460A (en) | 2006-08-03 | 2006-08-03 | Lithium thionyl chloride battery lithium anode and its surface treatment |
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| CN1941460A true CN1941460A (en) | 2007-04-04 |
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| CN 200610019798 Pending CN1941460A (en) | 2006-08-03 | 2006-08-03 | Lithium thionyl chloride battery lithium anode and its surface treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466046A (en) * | 2013-09-17 | 2015-03-25 | 襄阳艾克特电池科技股份有限公司 | Lithium battery |
| WO2019061316A1 (en) * | 2017-09-27 | 2019-04-04 | 惠州市惠德瑞锂电科技股份有限公司 | Primary lithium battery having high discharge efficiency |
-
2006
- 2006-08-03 CN CN 200610019798 patent/CN1941460A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466046A (en) * | 2013-09-17 | 2015-03-25 | 襄阳艾克特电池科技股份有限公司 | Lithium battery |
| CN104466046B (en) * | 2013-09-17 | 2017-11-21 | 襄阳艾克特电池科技股份有限公司 | A kind of lithium battery |
| WO2019061316A1 (en) * | 2017-09-27 | 2019-04-04 | 惠州市惠德瑞锂电科技股份有限公司 | Primary lithium battery having high discharge efficiency |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |