CN203503734U - Positive body for button battery and button battery comprising positive body - Google Patents
Positive body for button battery and button battery comprising positive body Download PDFInfo
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- CN203503734U CN203503734U CN201320117359.8U CN201320117359U CN203503734U CN 203503734 U CN203503734 U CN 203503734U CN 201320117359 U CN201320117359 U CN 201320117359U CN 203503734 U CN203503734 U CN 203503734U
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- positive
- positive polar
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Abstract
The utility model relates to a positive body for a button battery and the button battery comprising the positive body. The button battery comprises a positive shell, a negative cover and a sealing ring between the positive shell and the negative cover, wherein the negative cover and the sealing ring are combined to form a negative combination cover; the negative combination cover is filled with a negative material, a diaphragm, electrolyte and the positive body; the positive shell covers the negative combination cover and comprises a substance; the negative cover is filled with the substance; the positive body comprises a positive material and a shaping ring body of the positive material; the shaping ring body comprises an outer ring wall, a bottom edge ring connected with the bottom edge of the outer ring wall, and a convex part which is upward from the inner edge of the bottom edge ring. According to the positive body of the battery disclosed by the utility model, more positive materials can be obtained; simultaneously, the positive body has the action of a collector.
Description
Technical field
The utility model relates to a kind of positive polar body for button cell and comprises the button cell of this positive polar body.
Background technology
The today reaching increasingly in Science and Technology Day, various electronic equipments and electronic product extensive use, and the requirement to electronic equipment and the appended charged pool of electronic product is more and more higher, and drive electronic equipment and electronic product to need a kind of small volume button cell easy to use.To requiring higher electronic equipment and electronic product conventionally to use the high performance lithium manganese button cell of a kind of high voltage, present lithium manganese button cell has generally comprised negative cover, sealing ring, sealing ring is injection-moulded in negative cover periphery, negative material, membrane layer, positive electrode, current collection layer and anode cover, and the positive electrode of present lithium manganese button cell is generally to adopt the one side of anodal cake to add together moulding of wire netting, wire netting is for current-collecting function, owing to being confined to the single plane of anodal cake, there is wire netting, one side without wire netting after moulding can be heaved due to positive electrode density unevenness weighing apparatus, and have the one side of wire netting to cave inward, affect battery assembling and electrical property, and the molding mode due to this positive pole cake, amount and the density of positive electrode are all restricted.In addition,, when the anodal cake of automatic assembling, because the anodal cake periphery of collision easily makes it come off, affect battery performance and capacity.Existing manganese lithium button cell is also used metal cup, and this metal cup occupies very large space and has higher cost of manufacture, and the contained positive electrode of same volume lower button battery greatly reduces, and affects battery capacity.And due to the moulding pattern of above anodal cake, when production assembly becomes battery, anodal cake can only adopt immersion pattern to carry out.Because lithium manganese button cell is used a kind of organic bath, its Main Ingredients and Appearance is propene carbonate (PC) and lithium salts, this organic electrolyte is very easy to volatilization, and each muffin liquid absorption and rate of liquid aspiration different, thereby affect the consistency of these battery performances.
Utility model content
The purpose of this utility model is to provide a kind of positive polar body that improves battery performance, and is combined to form battery with this positive polar body, and this battery can be the lithium manganese button cell with above-mentioned positive polar body.
An aspect of the present utility model is to provide a kind of positive polar body for button cell, described positive polar body comprises the sizing circle body of positive electrode and positive electrode, described sizing circle body comprises collar wall, the bossing that Quan Ji base, the base circle inward flange being connected with the base of this collar wall makes progress, described positive electrode is placed in sizing circle body and forms positive polar body together with setting circle body.
The feature of positive polar body of the present utility model is that collar wall is sheet metal wall body, base circle is also sheet metal, on base, circle inward flange has the metal lamellar body raising up, the solid positive electrode of formed whole becket, and positive electrode is mainly comprised of manganese dioxide, carbon and binding agent.The becket positive electrode that links closely is repressed, and the metal lamellar body raising up is absorbed in positive electrode completely, thereby forms very firm smooth anode body.
Wherein, positive polar body is simultaneously as collector body.Base circle is real plane.Or, Quan Shangyou interval, base through hole, interval through hole has convex thorn around.Bossing on the base circle inward flange of sizing circle body is shorter than collar wall.Bossing can be triangle, semicircle, rectangle or whole ring plate.Described becket can be in stainless steel, stainless iron or conducting polymer composite any one punching press or casting form.This positive polar body is applied in lithium manganese button cell, and described battery comprises negative material, barrier film, electrolyte, anode shell, battery cathode lid and both positive and negative polarity isolation cushion rubber, and cushion rubber has sealant around, together with positive polar body of the present utility model, is combined to form battery.Described positive polar body is linked closely positive electrode and is formed by the circle body of shaping, and the base circle of described sizing circle body plays afflux effect simultaneously, is not subject to the impact of outer anode cover bottom surface distortion.
Another aspect of the present utility model, a kind of button cell is provided, comprise: negative cover, sealing ring, negative material, barrier film, electrolyte, anode cover and above-mentioned positive polar body, in described anode cover, can hold positive polar body, described base circle is positioned at the bottom of the shell of anode cover on inner surface, negative cover comprises covers the end and lid, in negative cover, can hold negative material, barrier film is between positive electrode and negative material, separate positive electrode and negative material, sealing ring is between anode cover and negative cover, for the insulation between anode cover and negative cover and the sealing of battery, between sealing ring and anode cover and between sealing ring and negative cover, there iing sealant.
The positive polar body of button cell of the present utility model comprises the sizing circle body of positive electrode and positive electrode, anodal body is formed to firm external form, and positive polar body contacts the afflux effect of playing with anode cover, fill more positive electrode, its production automation degree is improved greatly, change battery electrolyte is quantitative filling, while having prevented automatic battery production, muffin is broken, thereby greatly improve battery electrical property and discharge capacity, positive electrode and described sizing circle body are integral forming, afflux is more efficient, the high conformity of battery performance.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Fig. 1 is according to the sectional view of the button cell of the utility model embodiment;
Fig. 2 is according to the sectional view of the sizing circle body of the positive polar body of the button cell of the utility model embodiment;
Fig. 3 is according to the sectional view of the positive polar body of the utility model embodiment.
Fig. 4 is according to the stereogram of the sizing circle body of Fig. 2 of the utility model embodiment.
Fig. 5 is according to the three-dimensional external form figure of the sizing circle body of the utility model embodiment Fig. 3.
Description of symbols in figure is:
1-anode cover 2-negative cover 3-sealing ring
The positive polar body of 4-negative material 5-barrier film 6-
7-sizing circle body 7a-collar wall 7b-base circle
The bossing that 7c-base circle inward flange makes progress
A-positive electrode G-sealant
Embodiment
Fig. 1 is according to the sectional view of the button cell after sealing moulding of the present utility model.As shown in Figure 1, according to button cell of the present utility model, comprise anode cover 1, negative cover 2, sealing ring 3, negative material 4, barrier film 5, positive polar body 6 and electrolyte, wherein positive polar body also doubles as positive electrode collector.At the bottom of anode cover 1 comprises shell and housing, housing is with substantially vertical at the bottom of shell, outer surface at the bottom of having at the bottom of the shell that is positioned at housing inner surface at the bottom of shell and being positioned at the shell outside housing, holds anodal body 6 in anode cover 1, positive polar body 6 comprises the sizing circle body 7 of positive electrode A and positive electrode.Negative cover 2 comprises covers the end and lid, holds negative material 4 in negative cover 2.Barrier film 5, between positive electrode A and negative material 4, and is separated positive electrode A and negative material 4; Sealing ring 3 is between anode cover 1 and negative cover 2, for the insulation between anode cover 1 and negative cover 2 and the sealing of battery; Between sealing ring 3 and anode cover 1 and between sealing ring 3 and negative cover 2, there iing sealant G, to increase the sealing property of battery.Anode cover 1 is made through diel punching press for sheet metal with negative cover 2, preferably stainless steel substrates is made through diel punching press, and the sheet metal of other material also can be prepared anode cover 1, but the cost of stainless steel substrates is lower, the thickness of stainless steel substrates is generally 0.15-0.30mm, is preferably 0.20mm.Described sheet metal is circular, and the diameter of sheet metal can be determined according to the size of the battery of preparation.For the lithium manganese button cell of a CR2032 of assembling, the diameter of needed sheet metal is approximately 26mm, and the diameter of the housing of making is approximately 20mm, and the height of housing is about 3mm.Apparently, as the button cell of making is other shape, and needed sheet metal has other shapes.
Fig. 2 and Fig. 4 are respectively sectional view and the stereograms of sizing circle body of the positive polar body of the button cell that makes according to the utility model, this sizing circle body comprises collar wall 7a, the bossing 7c that the base circle 7b being connected with collar wall 7a base and base circle inward flange make progress.Described collar wall 7a, its maximum height maintains an equal level with the positive interior positive electrode A of polar body 6, preferred heights position is than the low 0～0.30mm of positive polar body 6 interior positive electrode A plane, more preferably than the low 0～0.20mm of positive polar body 6 interior positive electrode A plane, described base circle 7b, its width can be the value of any appropriate, preferred value is the 1/2-1/20 of positive polar body 6 width, the 1/4-1/15 of positive polar body 6 width more preferably, most preferably be 1/10 of positive polar body 6 width, the bossing 7c that described base circle inward flange makes progress, it highly directly affects the firm and intensity of whole positive polar body 6, preferred heights is the 2/3-1/6 of 7a height, more preferably be highly the 1/2-1/4 of 7a height, it is highly most preferably 1/3 of 7a height, sizing circle body shown in Fig. 2 is becket, for fixing positive electrode and there is current collection effect.Becket shown in Fig. 2 is generally used sheet metal to make through diel shearing, preferably by stainless steel, through diel shearing, made, the sheet metal of other material also can be prepared described becket, and it also can be made of forging type, but uses sheet metal cost of stamping lower.Preferably use 430 stainless steel substrates, stainless steel substrates thickness is generally 0.05-0.20mm, preferably 0.10mm.Becket shown in Fig. 2 is circular, and the width of sheet metal is determined according to prepared cell diameter size.For the lithium manganese button cell of a CR2032 of assembling, described sheet thicknesses is 0.10mm, and sheet metal width is about 23mm, and the becket diameter of making through diel shearing is approximately 15mm, and the height of becket is about 1.90mm.Obviously, if the shape that the button cell of making is other, as ellipse, made becket is also oval.Positive electrode A is by manganese dioxide, and conductive carbon black and some binding agents form.Manganese dioxide need carry out transformation of crystal processing, the general high-temperature calcination that adopts is processed, manganese dioxide is changed into the manganese dioxide of γ-β mixing crystal formation, above-mentioned positive electrode is mixed and puts into diel machine and form and be close to positive polar body together with described becket punching press, anodal height and external diameter that punching press forms are determined by different battery size sizes, the positive polar body forming after punching press, owing to there being outer becket to support, the large 1.2-1.5 of anodal cake that density ratio supports without outer becket doubly.Under identical volume, can greatly improve the content of cell positive material.The design of the part that raises up of Quan Ji base, the base circle inward flange of becket, makes anodal body formed rear internal density even, and integral surface is smooth, and the becket positive electrode that links closely, and current collection effect is good.
Fig. 3 and Fig. 5 are respectively sectional view and the stereograms of positive polar body of the present utility model, and positive polar body is comprised of positive electrode A and sizing circle body 7 thereof.The active material A of the positive polar body shown in Fig. 3 is combined by manganese dioxide, conductive carbon black and some binding agents, manganese dioxide is optional with electrolytic manganese dioxide, carry out the processing of high temperature transformation of crystal, temperature is generally 350-430 ℃, conductive carbon black can be selected native graphite, also Delanium, or acetylene black, binding agent is generally selected PTFE emulsion, and above-mentioned material is mixed.Sizing circle body shown in Fig. 3 comprises collar wall 7a, encloses with base circle 7b and the base of collar wall 7a the bossing 7c that inward flange makes progress, and described positive electrode is placed in sizing circle body and forms positive polar body together with setting circle body.
For becket and the positive electrode of positive polar body is close to, closely, firmly combine effectively, can take first positive electrode to be shaped for the first time, then put becket and carry out pressing and forming for the second time, or pressing and forming continuously repeatedly.
The battery obtaining according to embodiment of the present utility model below carries out the test of internal resistance, short circuit current and the discharge capacity of battery, and to prove that the internal resistance of the button cell being obtained by embodiment of the present utility model is lower, short circuit current is larger, discharge capacity is higher.
Particularly, use the CR1220 battery, CR1632 battery, the CR2032 battery that comprise above-mentioned positive polar body, its internal resistance, short circuit current and discharge capacity are tested, result is as shown in table 1:
Table 1.
From the test result of internal resistance, short circuit current and the discharge capacity of above-mentioned three kinds of batteries, show, the internal resistance of cell of the utility model embodiment is less, and short circuit current is larger, and discharge capacity is higher.
The standby lithium manganese button cell of anodal system that adopts the utility model patent to provide can be simplified the operating process of battery production, improve production automation degree, avoided the fragmentation in battery assembling process of anodal cake to come off, improved production efficiency, reduced percent defective, reduce production cost, reduced the infringement to environment and staff.Meanwhile, because used positive polar body has good current collection, adopt this anodal cake to double as the design of collector body, after sealing moulding, the internal resistance of cell is lower, and short circuit current and discharge capacity are higher.
Although described a kind of embodiment of the present utility model above, but the utility model is not limited to this, as long as button cell has adopted and has been similar to this anode body, the becket of positive polar body has the bulge loop making progress in the circle of Quan Ji base, base around, its anodal surface is smooth, battery quality is more stable, and this shape reaches the more positive electrodes of increase, improve catchment effect, improve battery electrical property, all fall in the utility model protection range, that is to say, under the prerequisite that does not depart from the utility model spirit and instruct, member of ordinary skill in the art can carry out to the utility model distortion and the change of various equivalences, and these distortion and change are all in the utility model protection range.
Claims (17)
1. the positive polar body for button cell, it is characterized in that, described positive polar body comprises the sizing circle body of positive electrode and positive electrode, described sizing circle body comprises the bossing that Quan Ji base, base circle inward flange that collar wall is connected with the base of this collar wall makes progress, and described positive electrode is placed in described sizing circle body and forms positive polar body together with setting circle body.
2. positive polar body according to claim 1, is characterized in that, described collar wall, base circle and bossing are all metal lamellar body.
3. positive polar body according to claim 1, is characterized in that, the solid described positive electrode of whole sizing circle body, and described bossing is absorbed in positive electrode completely.
4. positive polar body according to claim 1, is characterized in that, described collar wall is vertical with base circle.
5. positive polar body according to claim 1, is characterized in that, described positive polar body is simultaneously as collector body.
6. positive polar body according to claim 1, is characterized in that, base circle is real plane.
7. positive polar body according to claim 1, is characterized in that, Quan Shangyou interval, base through hole.
8. positive polar body according to claim 7, is characterized in that, described interval through hole has convex thorn around.
9. positive polar body according to claim 1, is characterized in that, the bossing on the base circle inward flange of described sizing circle body is shorter than collar wall.
10. positive polar body according to claim 1, is characterized in that, described bossing is triangle, semicircle, rectangle or whole ring plate.
11. positive polar bodys according to claim 1, is characterized in that, described sizing circle body be in stainless steel, stainless iron or conducting polymer composite any one.
12. positive polar bodys according to claim 1, is characterized in that, the height position of described collar wall is than the low 0～0.20mm of described positive electrode plane in described positive polar body.
13. positive polar bodys according to claim 1, is characterized in that, the width of described base circle is the 1/2-1/20 of described positive polar body width.
14. positive polar bodys according to claim 13, is characterized in that, the width of described base circle is 1/10 of described positive polar body width.
15. positive polar bodys according to claim 1, is characterized in that, the height of the bossing that described base circle inward flange makes progress is the 1/2-1/4 of collar wall height.
16. positive polar bodys according to claim 15, is characterized in that, the height of the bossing that described base circle inward flange makes progress is 1/3 of collar wall height.
17. 1 kinds of button cells, it is characterized in that, comprise: negative cover, sealing ring, negative material, barrier film, electrolyte, the positive polar body of any one in anode cover and claim 1-16, in described anode cover, hold anodal body, described base circle is positioned at the bottom of the shell of anode cover on inner surface, negative cover comprises covers the end and lid, in negative cover, hold negative material, barrier film is between positive electrode and negative material, and separate positive electrode and negative material, sealing ring is between anode cover and negative cover, for the insulation between anode cover and negative cover and the sealing of battery, between sealing ring and anode cover and between sealing ring and negative cover, there iing sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320117359.8U CN203503734U (en) | 2013-03-14 | 2013-03-14 | Positive body for button battery and button battery comprising positive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320117359.8U CN203503734U (en) | 2013-03-14 | 2013-03-14 | Positive body for button battery and button battery comprising positive body |
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| Publication Number | Publication Date |
|---|---|
| CN203503734U true CN203503734U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320117359.8U Expired - Lifetime CN203503734U (en) | 2013-03-14 | 2013-03-14 | Positive body for button battery and button battery comprising positive body |
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| CN (1) | CN203503734U (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 |
| CN110073521A (en) * | 2017-02-23 | 2019-07-30 | 松下知识产权经营株式会社 | Coin-shape cell |
-
2013
- 2013-03-14 CN CN201320117359.8U patent/CN203503734U/en not_active Expired - Lifetime
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 |
| CN110073521A (en) * | 2017-02-23 | 2019-07-30 | 松下知识产权经营株式会社 | Coin-shape cell |
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Granted publication date: 20140326 |