CN201219119Y - Lithium manganese button cell - Google Patents
Lithium manganese button cell Download PDFInfo
- Publication number
- CN201219119Y CN201219119Y CN200820035395.9U CN200820035395U CN201219119Y CN 201219119 Y CN201219119 Y CN 201219119Y CN 200820035395 U CN200820035395 U CN 200820035395U CN 201219119 Y CN201219119 Y CN 201219119Y
- Authority
- CN
- China
- Prior art keywords
- battery
- positive plate
- positive
- cover
- button cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y02E60/12—
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- Secondary Cells (AREA)
Abstract
The utility relates to a lithium-magnesium button type battery comprising a cathode cover, a lithium sheet, a diaphragm, a positive plate, electrolyte, an insulated seal ring and a positive cover. A spacing block is evenly or symmetrically disposed at inner bottom of anode cover for positioning and constraining positive plate. The lithium-magnesium button type battery of the utility avoids problem of inner trip of battery of traditional lithium-magnesium button type battery due to the distancing of positive plate and negative plate during discharging course, reduces electrolyte leakage of battery, thereby life span is largely promoted; the novel structure of the utility have certain protection effect on battery, thereby safety of battery is further promoted.
Description
Technical field
The utility model relates to a kind of li-Mn button cell.
Background technology
Along with developing rapidly of electronic technology, present various electric equipments all are tending towards miniaturization significantly, and button cell is widely used as the power supply of portable electron device.Button cell has that volume is little, internal resistance is low, discharge voltage is stable, the advantage of long service life.Li-Mn button cell in the market is made up of negative cover, lithium sheet, barrier film, positive plate, electrolyte, insulated enclosure circle and positive cover, and positive cover and negative cover form one by press-fit.Have spatia between the new battery that harsh output is come, its positive plate periphery and insulated enclosure circle preserving electrolyte, but along with the discharge use of battery, can consume gradually as the lithium of battery cathode, the thickness attenuation, and positive plate expands gradually and occupies electrolyte cavities.Arrived the discharge middle and later periods, the positive plate after the expansion has almost occupied whole electrolyte cavities, and this situation will cause between the both positive and negative polarity apart from drawing back, the serious phenomenon that separates takes place, make inside battery almost form open-circuit condition, therefore cell voltage can sharply descend, and causes battery to scrap.
The utility model content
The technical problems to be solved in the utility model is: shortcoming and deficiency in order to overcome prior art provide a kind of li-Mn button cell through architecture advances.
The technical solution adopted in the utility model is: a kind of li-Mn button cell, comprise negative cover, lithium sheet, barrier film, positive plate, electrolyte, insulated enclosure circle and positive cover, on positive cover lid inner bottom surface evenly or be symmetrically arranged with guide vane end stop in order to location and constraint positive plate.
For conserve space, give the electrolyte slot milling, described guide vane end stop adopts L shaped guide vane end stop.
Described guide vane end stop adopts stainless steel material or wood materials to make.
The beneficial effects of the utility model are: this li-Mn button cell causes inside battery to open the problem of jumping discharge drawing back because of positive plate and negative pole lithium distance between commutator segments of having avoided that traditional li-Mn button cell occurred in the use, with stylish structure decrease the leakage of battery electrolyte inside, so improve greatly the useful life of battery.New construction has also played the certain protection effect to battery, and the fail safe of use further improves.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of existing li-Mn button cell.
Fig. 2 is a structural representation of the present utility model.
1. positive plates, 2. positive cover, 3. guide vane end stops among the figure
Embodiment
A kind of li-Mn button cell as shown in Figure 1 comprises negative cover, lithium sheet, barrier film, positive plate 1, electrolyte, insulated enclosure circle and positive cover 2, on positive cover 2 lid inner bottom surfaces evenly or be symmetrically arranged with guide vane end stop 3 in order to location and constraint positive plate 1.
For conserve space, give the electrolyte slot milling, described guide vane end stop 3 is L shaped guide vane end stop.
Guide vane end stop 3 adopts plastics or wood materials to make.
In the discharge use of battery, the lateral expansion of the guide vane end stop 3 may command positive plates 1 around the positive plate 1, make the positive plate 1 can only longitudinal dilatation, avoid battery that the phenomenon that seriously separates takes place between positive plate and negative pole lithium sheet in the process that discharge is used, the elimination inside battery be opened the jumping problem.This structure can also reduce the battery electrolyte inside via the seepage between insulated enclosure circle and the positive cover simultaneously, keeps the accumulate performance of battery.When battery causes air pressure inside to increase suddenly owing to reasons such as charging, overdischarge, short circuits, guide vane end stop will at first bear deformation pressure, and therefore buffering air pressure also can play the certain protection effect to battery, improves the fail safe of using.
Claims (3)
1. li-Mn button cell, comprise negative cover, lithium sheet, barrier film, positive plate (1), electrolyte, insulated enclosure circle and positive cover (2), it is characterized in that: on positive cover (2) lid inner bottom surface evenly or be symmetrically arranged with guide vane end stop (3) in order to location and constraint positive plate (1).
2. li-Mn button cell according to claim 1 is characterized in that: described guide vane end stop (3) is L shaped guide vane end stop.
3. li-Mn button cell according to claim 1 and 2 is characterized in that: described guide vane end stop (3) is made by plastics or wood materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820035395.9U CN201219119Y (en) | 2008-04-30 | 2008-04-30 | Lithium manganese button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820035395.9U CN201219119Y (en) | 2008-04-30 | 2008-04-30 | Lithium manganese button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219119Y true CN201219119Y (en) | 2009-04-08 |
Family
ID=40541954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820035395.9U Expired - Fee Related CN201219119Y (en) | 2008-04-30 | 2008-04-30 | Lithium manganese button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201219119Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785592A (en) * | 2016-08-24 | 2018-03-09 | 常州安伊达电源科技有限公司 | A kind of low temperature resistant button type lithium-manganese battery |
| CN105676031B (en) * | 2016-02-05 | 2018-09-21 | 株洲升华科技有限公司 | Lithium ion battery electrode material electric performance testing device and battery production method |
-
2008
- 2008-04-30 CN CN200820035395.9U patent/CN201219119Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676031B (en) * | 2016-02-05 | 2018-09-21 | 株洲升华科技有限公司 | Lithium ion battery electrode material electric performance testing device and battery production method |
| CN107785592A (en) * | 2016-08-24 | 2018-03-09 | 常州安伊达电源科技有限公司 | A kind of low temperature resistant button type lithium-manganese battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 |