CN107785592A - A kind of low temperature resistant button type lithium-manganese battery - Google Patents
A kind of low temperature resistant button type lithium-manganese battery Download PDFInfo
- Publication number
- CN107785592A CN107785592A CN201610721292.7A CN201610721292A CN107785592A CN 107785592 A CN107785592 A CN 107785592A CN 201610721292 A CN201610721292 A CN 201610721292A CN 107785592 A CN107785592 A CN 107785592A
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- China
- Prior art keywords
- positive pole
- pole block
- mounting cup
- low temperature
- block mounting
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
Abstract
The present invention relates to a kind of low temperature resistant button type lithium-manganese battery, including plate-like positive cover, plate-like negative cover, lithium piece, positive pole block, barrier film and positive pole block mounting cup, the positive pole block is placed in positive pole block mounting cup, and the barrier film is between the upper surface of the positive pole block and the lower surface of the lithium piece；The bottom wall and annular sidewall of the positive pole block mounting cup set multiple through holes, and the position that is fitted to each other of the plate-like negative cover and plate-like positive cover is provided with sealing ring, space is left between the sealing ring on the outside of the annular sidewall of the positive pole block mounting cup；Electrolyte is placed in the gap between the positive pole block mounting cup and sealing ring, so that through hole of the electrolyte through annular sidewall is in contact with the positive pole block, realizes electrochemical discharge；Positive pole block is placed in positive pole block mounting cup, it is possible to prevente effectively from positive pole block deformed dilation occupies electrolyte cavities, to adapt to the requirement of low temperature environment.
Description
Technical field
The present invention relates to lithium-manganese cell technical field, particularly a kind of low temperature resistant button type lithium-manganese battery.
Background technology
Lithium-manganese cell is as one kind in battery, because its small volume, capacitance are applied in many fields greatly.Especially detain
Formula lithium-manganese cell has the advantages of small volume, internal resistance are low, discharge voltage is stable, service life is long.Lithium manganese button in the market
Formula battery, it is made up of negative cover, lithium piece, barrier film, positive plate, electrolyte, insulated enclosure circle and positive cover, positive cover and negative cover
One is formed by press-fit.The new battery just produced, there is gap between its positive plate periphery and insulated enclosure circle
Chamber is used with preserving electrolyte with the electric discharge of battery, and the lithium as GND can gradually use up, and thickness is thinning, and just
But gradually expansion occupies electrolyte cavities to pole piece.The electric discharge middle and later periods is arrived, the positive plate after expansion almost occupies whole electrolysis
Sap cavity, distance is pulled open between such case will cause both positive and negative polarity, occur it is serious separate phenomenon, inside battery is almost formed out
Therefore line state, cell voltage can drastically decline, cause battery to scrap；Especially at low ambient temperatures, the above situation is more bright
It is aobvious；While in order to improve Li/MnO2The flash-over characteristic and temperature characterisitic of battery, reasonable selection organic electrolyte solution are very heavy
Want.The method generally used both at home and abroad at present is with lithium perchlorate（LiClO4）Make electrolyte, with propylene carbonate ester（PC）With
Glycol dimethyl ether（DME）Binary mixture make solvent.In addition, also useful ethyoxyl methoxy vinylbenzene（EME）Substitute DME
And use trifluoromethyl sulfonic acid lithium（LiCF3SO3）Substitute LiClO4's.The Li/MnO manufactured in aforementioned manners2Battery, its feature
It is that it has higher ratio energy（Up to 250 watt-hours/kilogram and 500 watt-hours/liter）, higher electric performance stablity and use peace
Quan Xing.But it is only suitable in -20 DEG C~+70 DEG C temperature ranges, with 0.25mA/cm2The field of current density electric discharge for a long time
Close and use, will be substantially reduced in winter and the discharge performance under the low temperature environment of polar regions.How to obtain one kind can be
The still excellent lithium-manganese cell of discharge performance under low temperature environment, it is the technical problem that those skilled in the art are badly in need of solving.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of button type lithium-manganese battery for being suitable for low temperature environment.
In order to solve the above technical problems, low temperature resistant button type lithium-manganese battery provided by the invention, including plate-like positive cover, plate-like
Negative cover, lithium piece, positive pole block, barrier film and positive pole block mounting cup, the positive pole block are placed in positive pole block mounting cup, and the barrier film is set
Between the upper surface of the positive pole block and the lower surface of the lithium piece；The bottom wall and annular sidewall of the positive pole block mounting cup are set
Multiple through holes, the position that is fitted to each other of the plate-like negative cover and plate-like positive cover are provided with sealing ring, the positive pole block mounting cup
Annular sidewall on the outside of and the sealing ring between leave space；Electrolyte is placed between the positive pole block mounting cup and sealing ring
Gap in so that through hole of the electrolyte through annular sidewall is in contact with the positive pole block, realize electrochemical discharge；Positive pole block
It is placed in positive pole block mounting cup, it is possible to prevente effectively from positive pole block deformed dilation occupies electrolyte cavities, to adapt to making for low temperature environment
With requiring.
Further, the positive pole block presses one by acetylene black, graphite powder and the binding agent of heat treated manganese dioxide, compression
Certainty ratio is well mixed, and the mass ratio of each component is manganese dioxide：Graphite powder：Acetylene black：Binding agent=（85~88）：（1~3）：（5
~7）：（5~6）；Acetylene black specific area is big, and adsorptivity is strong, has more preferable electric conductivity.
Further, the electrolyte is LiClO4Mixed solvent solution；Mixed solvent solution is by LiClO4、Propylene carbonate
Fat (PC), glycol dimethyl ether (DME) and two luxuriant pentanes (DOL) form, and its quality proportioning is LiClO4:PC:DME:DOL=（10
~12）：（55~60）：（10~15）：（20~25）；DOL, DME, PC have the spies such as higher dielectric constant and low freezing point, higher boiling
Property, the combination of three make it that electrolyte still keeps good electric conductivity at low ambient temperatures, while can accelerate LiClO4Three
Dissolving in first mixed organic solvents system, it may insure that organic bath keeps liquid within the scope of a wide temperature again,
And the viscosity of whole organic bath is relatively low, penetration is stronger.
Further, the positive pole block mounting cup is stainless steel mounting cup, a diameter of 0.5mm of the through hole, adjacent through-holes
Between spacing be 1mm, to obtain more excellent electric conductivity.
The technique effect of invention：（1）The low temperature resistant button type lithium-manganese battery of the present invention, relative to prior art, temperature for-
At 40 DEG C, still there is good stability, and have Li/MnO2Battery is only capable of working more than -20 DEG C of temperature；（2）With logical
The positive pole block mounting cup in hole not only can be spacing to the progress of positive pole block, to adapt to low temperature environment, can substitute existing lithium-manganese cell
In collector；（3）The uniform multiple diameter 0.5mm of the annular sidewall and bottom wall of positive pole mounting cup through hole, is effectively increased just
Contact area between pole block, electrolyte, positive pole mounting cup, can obtain more preferable catchment effect.
Brief description of the drawings
The present invention is described in further detail with reference to Figure of description：
Fig. 1 is the cross-sectional view of the low temperature resistant button type lithium-manganese battery of the present invention；
Fig. 2 is the cross-sectional view of the positive pole block mounting cup of the present invention；
Fig. 3 is Fig. 2 top view；
Fig. 4 is the temperature characteristics figure of the present invention.
In figure：Plate-like positive cover 1, plate-like negative cover 2, positive pole block 3, lithium piece 4, barrier film 5, sealing ring 6, positive pole block mounting cup
7, through hole 8, annular sidewall 9, bottom wall 10.
Embodiment
Embodiment 1
As shown in Figure 1 to Figure 3, the low temperature resistant button type lithium-manganese battery of the present embodiment, model CR2032, the i.e. low temperature resistant button lithium
A diameter of 20mm of manganese cell, thickness 3.2mm；Including：Plate-like positive cover 1, plate-like negative cover 2, lithium piece 4, positive pole block 3, every
Film 5 and positive pole block mounting cup 7, positive pole block 3 are according to mass ratio 85 by manganese dioxide, acetylene black, graphite powder and binding agent：3：6：
Battery anode slurry is configured to after 6 mixing, by being granulated, sieving, then the cylindrical positive pole of specific thickness is made on roller
Block 3, the cylindrical positive pole block 3 are placed in positive pole block mounting cup 7, and positive pole block mounting cup 7 is by annular sidewall 9 and the structure of circular bottom wall 10
Into, annular sidewall 9 and the uniform multiple a diameter of 0.5mm of bottom wall 10 through hole 8,1mm is spaced between each through hole 8, can be selected stainless
Annular sidewall 9 and bottom wall 10 are obtained after steel plate punched, then annular sidewall 9 and bottom wall 10 are welded to obtain the installation of positive pole block
Cup 7；The bottom wall of positive pole block 3 is in contact with the bottom wall of positive pole block mounting cup 7, the side wall of positive pole block 3 and the inner side phase of annular sidewall 9
Contact, the upper surface of positive pole block 3 set barrier film 5, and the top of the barrier film 5 sets lithium piece 4, the top covering disk dress negative pole of lithium piece 4
Lid 2, the position that is fitted to each other of plate-like negative cover 2 and plate-like positive cover 1 are provided with sealing ring 6, the annular sidewall of positive pole block mounting cup 7
Space is left between 9 outsides and sealing ring 6, electrolyte is placed in the gap between positive pole block mounting cup 7 and sealing ring 6, electrolysis
Liquid is LiClO4Mixed solvent solution, mixed solvent solution is by LiClO4、Propene carbonate, glycol dimethyl ether and two cyclopentadienyls penta
Alkane forms, and its quality proportioning is LiClO4:PC:DME:DOL=10：60：10：20, through hole and positive pole of the electrolyte through annular sidewall
Block is in contact, and realizes electrochemical discharge；Battery after improvement substantially increases discharge performance under cryogenic, two kinds of CR2032
Type cell is discharged to 2.0V discharge curves as shown in figure 4, low temperature battery is in -40 DEG C of bars under the conditions of -40 DEG C with constant-resistance 15k Ω
Discharge performance under part is the decades of times of conventional batteries.
Positive pole block mounting cup with through hole not only can be spacing to the progress of positive pole block, to adapt to low temperature environment, positive pole peace
The annular sidewall of cup and the uniform multiple diameter 0.5mm of bottom wall through hole are filled, effectively increases positive pole block, electrolyte, positive pole installation
Contact area between cup, can obtain more preferable catchment effect, to adapt to the needs of low temperature environment.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.
Claims (4)
1. a kind of low temperature resistant button type lithium-manganese battery, including：Plate-like positive cover（1）, plate-like negative cover（2）, lithium piece（4）, positive pole block
（3）, barrier film（5）With positive pole block mounting cup（7）, the positive pole block（3）It is placed in positive pole block mounting cup（7）It is interior, the barrier film（5）If
In the positive pole block（3）Upper surface and the lithium piece（4）Lower surface between；The positive pole block mounting cup（7）Bottom wall（10）
And annular sidewall（9）Multiple through holes are set（8）, the plate-like negative cover（2）With plate-like positive cover（1）The position that is fitted to each other set
There is sealing ring（6）, the positive pole block mounting cup（7）Annular sidewall（9）Outside and the sealing ring（6）Between leave space；
Electrolyte is placed in the positive pole block mounting cup（7）With sealing ring（6）Between gap in so that the electrolyte is through annular sidewall
（9）Through hole（8）With the positive pole block（3）It is in contact.
2. low temperature resistant button type lithium-manganese battery according to claim 1, it is characterised in that the positive pole block（3）By being heat-treated
Manganese dioxide, acetylene black, graphite powder and the binding agent of compression crossed are well mixed by a certain percentage, and the mass ratio of each component is two
Manganese oxide：Graphite powder：Acetylene black：Binding agent=（85~88）：（1~3）：（5~7）：（5~6）.
3. low temperature resistant button type lithium-manganese battery according to claim 2, it is characterised in that the electrolyte is LiClO4It is mixed
Bonding solvent solution；Mixed solvent solution is by LiClO4、Propene carbonate, glycol dimethyl ether and two luxuriant pentanes are formed, and its quality is matched somebody with somebody
Than for LiClO4:PC:DME:DOL=（10~12）：（55~60）：（10~15）：（20~25）.
4. low temperature resistant button type lithium-manganese battery according to claim 3, it is characterised in that the positive pole block mounting cup（7）For
Stainless steel mounting cup, the through hole（8）A diameter of 0.5mm, adjacent through-holes（8）Between spacing be 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721292.7A CN107785592A (en) | 2016-08-24 | 2016-08-24 | A kind of low temperature resistant button type lithium-manganese battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721292.7A CN107785592A (en) | 2016-08-24 | 2016-08-24 | A kind of low temperature resistant button type lithium-manganese battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107785592A true CN107785592A (en) | 2018-03-09 |
Family
ID=61388963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610721292.7A Pending CN107785592A (en) | 2016-08-24 | 2016-08-24 | A kind of low temperature resistant button type lithium-manganese battery |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416600A (en) * | 2000-03-07 | 2003-05-07 | 松下电器产业株式会社 | Non-aqueous electrolyte secomdary battery |
| CN201219119Y (en) * | 2008-04-30 | 2009-04-08 | 徐剑锋 | Lithium manganese button cell |
| CN101443933A (en) * | 2006-05-12 | 2009-05-27 | 松下电器产业株式会社 | Power storage device |
| CN102881912A (en) * | 2012-10-16 | 2013-01-16 | 常州达立电池有限公司 | Low-power-consumption pulse Li-MnO2 battery |
| CN203503734U (en) * | 2013-03-14 | 2014-03-26 | 松柏(广东)电池工业有限公司 | Positive body for button battery and button battery comprising positive body |
| CN205104563U (en) * | 2015-11-09 | 2016-03-23 | 宜昌力佳科技有限公司 | Set up button cell of electrolysis liquid bath in electrode solid liquid interface |
-
2016
- 2016-08-24 CN CN201610721292.7A patent/CN107785592A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416600A (en) * | 2000-03-07 | 2003-05-07 | 松下电器产业株式会社 | Non-aqueous electrolyte secomdary battery |
| CN101443933A (en) * | 2006-05-12 | 2009-05-27 | 松下电器产业株式会社 | Power storage device |
| CN201219119Y (en) * | 2008-04-30 | 2009-04-08 | 徐剑锋 | Lithium manganese button cell |
| CN102881912A (en) * | 2012-10-16 | 2013-01-16 | 常州达立电池有限公司 | Low-power-consumption pulse Li-MnO2 battery |
| CN203503734U (en) * | 2013-03-14 | 2014-03-26 | 松柏(广东)电池工业有限公司 | Positive body for button battery and button battery comprising positive body |
| CN205104563U (en) * | 2015-11-09 | 2016-03-23 | 宜昌力佳科技有限公司 | Set up button cell of electrolysis liquid bath in electrode solid liquid interface |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180309 |