CN207459092U - A kind of button lithium ion battery - Google Patents
A kind of button lithium ion battery Download PDFInfo
- Publication number
- CN207459092U CN207459092U CN201721426535.0U CN201721426535U CN207459092U CN 207459092 U CN207459092 U CN 207459092U CN 201721426535 U CN201721426535 U CN 201721426535U CN 207459092 U CN207459092 U CN 207459092U
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- China
- Prior art keywords
- cover
- negative
- lithium ion
- ion battery
- separator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of button lithium ion battery, including negative cover, positive cover and circular separator；The edge of negative cover and positive cover is sealed by mould-injection part, and positive cover and negative cover surround a closed cavity, anti-corrosion of metal layer of the inner surface of the positive cover and negative cover coating with high oxidation potential, multiple arcs protrusion is evenly equipped on the inner surface of negative cover, and the negative pole currect collecting net being bonded with arc convex is equipped at the inner surface center of negative cover, separator is arranged in positive cover, the edge of separator upwardly extends to form edge, multiple heat emission holes are transversely provided on edge, the bottom of separator is equipped with the annular protrusion for being coaxial therewith the heart；Membrane is equipped between negative cover and separator, negative material is equipped between negative cover and membrane, positive electrode is equipped between membrane and separator.The utility model can be greatly improved the self-discharge performance of lithium ion battery and reduce the internal resistance of lithium ion battery, be a kind of button lithium ion battery with good electrochemical anti-corrosive performance.
Description
Technical field
The utility model is related to technical field of lithium ion, particularly a kind of button lithium ion battery.
Background technology
Button cell is also referred to as button cell, refers to battery of the appearance and size as a small button, is in general relatively large in diameter,
Thinner thickness (compared with No. 5 AA batteries of prismatic battery such as in the market), button cell are that battery is divided from shape
, equal corresponding cell classification has prismatic battery, rectangular cell, Special-shaped battery；Button cell is because the bodily form is smaller, therefore various
It is widely used in miniature electronic product, from 4.8mm to 30mm, thickness differs diameter from 1.0mm to 7.7mm；Generally
For the backup power supply of each electronic product, such as computer main board, electronic watch, electronic dictionary, electronic scale, remote controler, electronic toy,
Pacemaker, electronic hearing aid, counter, camera etc..
Button-type lithium cell at present, including be cascading negative cover, negative material, membrane, positive cover, afflux
Body, positive cover, negative cover outer peripheral edge is inlaid with sealant rubber ring, and after positive cover and negative cover coordinate, sealant rubber ring plays sealing and makees
With equipped with electrolyte in the sealing space that positive cover and negative cover cooperatively form.This button lithium battery, due to sealant rubber ring with
Positive cover comes into contact in a large area, and ensure that the sealing performance of battery, but this cell positive material is completely attached to positive cover, is made
Battery internal resistance is excessive, influences the discharge performance of battery；In addition, the surface of the negative cover of current button battery is all flat
, therefore negative material exoelectrical reaction area very little reduces the discharge performance of battery.
Utility model content
To solve problems of the prior art, the purpose of this utility model is to provide a kind of splendid knob of discharge performance
Detain lithium ion battery.
To achieve the above object, the technical solution adopted in the utility model is：A kind of button lithium ion battery, including cathode
Lid, positive cover and circular separator；The edge of the negative cover and the positive cover is sealed by mould-injection part, and positive cover and negative
Polar cap surrounds metal of the inner surface coating with high oxidation potential of a closed cavity, the positive cover and the negative cover
Erosion resistant coating is evenly equipped with multiple arcs protrusion on the inner surface of the negative cover, and is equipped at the inner surface center of negative cover and institute
The negative pole currect collecting net of arc convex fitting is stated, the separator is arranged in the positive cover, and the edge of the separator prolongs upwards
It stretches to form edge, multiple heat emission holes is transversely provided on the edge, the bottom of the separator is equipped with the annular for being coaxial therewith the heart
Protrusion；Membrane is equipped between the negative cover and the separator, negative material is equipped between the negative cover and the membrane,
Positive electrode is equipped between the membrane and the separator.
As further improvement of the utility model, the membrane is glass fibre membrane.
As further improvement of the utility model, the anti-corrosion of metal layer is metallic aluminium or Titanium.
As further improvement of the utility model, the aperture of the heat emission hole is 0.4-0.8mm.
As further improvement of the utility model, the negative material for doping nano-structure porous silicon, the anode material
Expect for lithium metal.
As further improvement of the utility model, the bottom of the separator is equipped with the annular that 1-3 groups are coaxial therewith the heart
Protrusion,
As further improvement of the utility model, the cross section of the annular protrusion is handstand taper or semicircle.
As further improvement of the utility model, between the positive cover and negative cover be equipped with for separate positive cover and
The insulating protective sleeve of negative cover.
The beneficial effects of the utility model are：
1st, positive cover and cathode interior surface are coated with the anti-corrosion of metal layer with high oxidation potential in the utility model, prevent
Major structure is big into lithium ion battery self discharge, and the internal resistance of lithium ion battery is prevented to rise；It is uniformly distributed multiple on the inner surface of negative cover
Arc convex increases the exoelectrical reaction area between negative cover and negative material, makes lithium ion battery negative material abundant
A reaction is put in participation, enhances the discharge performance of lithium ion battery；Positive electrode does not contact in separator between positive cover,
The contact resistance of inside lithium ion cell is greatly reduced, improves the discharge performance of lithium ion battery；So this practicality is new
Type can be greatly improved the self-discharge performance of lithium ion battery and reduce the internal resistance of lithium ion battery, be that one kind has good electrification
Learn the button lithium ion battery of antiseptic property.
2nd, the utility model is using glass fibre membrane as membrane, and compared with common diaphragm, hole is filtered, imbibition rate is higher, and
High temperature resistance is good, improves the shelf characteric of button lithium ion battery.
3rd, the anti-corrosion of metal layer of the utility model uses metallic aluminium or Titanium, under metallic aluminium or Titanium high potential almost
Electrochemical corrosion does not occur.
4th, 0.4-0.8mm is in the aperture of heat emission hole on the utility model separator, excellent in heat dissipation effect.
5th, the negative material that the utility model uses is the nano-structure porous silicon of doping, and nano-structure porous silicon itself is with hole knot
Structure can effectively offset the volume expansion generated in lithium ion battery discharge process, and itself have doping electric conductivity, so as to
Greatly improve the discharge performance of lithium ion battery.
6th, the utility model sets 1-3 group annular protrusions, can guarantee just while inside lithium ion cell resistance is reduced
The conduction of electric current between pole material and anode cover improves the discharge performance of lithium ion battery to greatest extent.
7th, insulating protective sleeve is equipped between the utility model positive cover and negative cover, it can be effectively by negative cover and positive cover
Insulation separates, and avoids lithium ion battery short circuit, has prevented security risk, made the security that product uses more preferably.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment；
Fig. 2 is the top view of the utility model embodiment separator；
Reference numeral：
1- negative covers, 2- positive covers, 3- separators, 4- mould-injection parts, 5- anti-corrosion of metal layers, 6- arc convex, 7- affluxs
Net, 8- edges, 9- heat emission holes, 10- annular protrusions, 11- membranes, 12- negative materials, 13- positive electrodes, 14- insulating protective sleeves.
Specific embodiment
The embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment
In one of the embodiments, as depicted in figs. 1 and 2, a kind of button lithium ion battery, including negative cover 1, anode
Lid 2 and circular separator 3；The edge of the negative cover 1 and the positive cover 2 is sealed by mould-injection part 4, and positive cover 2 and negative
Polar cap 1 surrounds a closed cavity, and the inner surface coating of the positive cover 2 and the negative cover 1 has high oxidation potential
Anti-corrosion of metal layer 5 is evenly equipped with multiple arcs protrusion 6 on the inner surface of the negative cover 1, and at the inner surface center of negative cover 1
Equipped with the negative pole currect collecting net 7 being bonded with the arc convex 6, the separator 3 is arranged in the positive cover 2, the separator 3
Edge upwardly extend to form edge 8, multiple heat emission holes 9 are transversely provided on the edge 8, the bottom of the separator 3 is equipped with
It is coaxial therewith the annular protrusion 10 of the heart；Membrane 11, the negative cover 1 and institute are equipped between the negative cover 1 and the separator 3
It states and negative material 12 is equipped between membrane 11, positive electrode 13 is equipped between the membrane 11 and the separator 3.
In the utility model, positive cover 2 and 1 inner surface of negative cover are coated with the anti-corrosion of metal layer 5 with high oxidation potential,
Anti-corrosion of metal layer 5 is using the metal material that electrochemical corrosion hardly occurs, the entire operating voltage model of button lithium ion battery
Electrochemical corrosion does not occur under enclosing, prevents from causing lithium ion battery self discharge big, the internal resistance of lithium ion battery is prevented to rise, effectively
Keep the performance of lithium ion battery；Multiple arcs protrusion 6 is evenly equipped on the inner surface of negative cover 1, and in the inner surface of negative cover 1
Be equipped with the negative pole currect collecting net 7 that is bonded with the arc convex 6 at the heart, arc convex 6 increase negative cover 1 and negative material 12 it
Between exoelectrical reaction area, make lithium ion battery negative material 12 that can fully participate in exoelectrical reaction, enhance lithium ion battery
Discharge performance, in addition 1 end face of negative cover is in punching press die forging process, when forming arc convex 6, since local elongation deforms, makes
1 inner wall of negative cover is deteriorated in process since vapor and oxygen react formed oxide layer, lithium ion
Battery cathode surface-active increases, and reduces the internal resistance of lithium ion battery；Separator 3 is provided in positive cover 2, separator 3
Edge upwardly extends to form edge 8, can be placed in positive electrode 13 in the cavity that membrane 11 and separator 3 are formed, on edge 8
The heat that the heat emission hole 9 laterally set generates lithium ion battery in discharge process be dispersed into time the surface of positive cover 2 into
Row heat dissipation, effectively prevents the energy accumulating of positive electrode 13 in use, influences the service life of lithium ion battery, separator
3 bottom is equipped with the annular protrusion 10 for being coaxial therewith the heart, and the end of such annular protrusion 10 and the positive cover 2 of lithium ion battery connect
Touch, realize the conduction of electric current, and positive electrode 13 does not contact in separator 3 between positive cover 2, be greatly reduced lithium from
The contact resistance of sub- inside battery improves the discharge performance of lithium ion battery.
In another embodiment, as shown in Figure 1, the membrane 11 is glass fibre membrane.Made using glass fibre membrane
For membrane 11, compared with common diaphragm, hole filter, imbibition rate are higher, and high temperature resistance is good, improves button lithium ion battery
Shelf characteric.
In another embodiment, as shown in Figure 1, the anti-corrosion of metal layer 5 is metallic aluminium or Titanium.Metallic aluminium or
Electrochemical corrosion hardly occurs under Titanium high potential, when it is implemented, vacuum coating may be employed in metallic aluminium or Titanium
Method can also form anti-corrosion of metal layer 5 using heat spraying method on the inner surface of positive cover and negative cover.
In another embodiment, as shown in Figure 1, the aperture of the heat emission hole 9 is 0.4mm.
In another embodiment, as shown in Figure 1, the aperture of the heat emission hole 9 is 0.6mm.
In another embodiment, as shown in Figure 1, the aperture of the heat emission hole 9 is 0.8mm.
When the aperture of heat emission hole 9 is 0.4-0.8mm, excellent in heat dissipation effect.
In another embodiment, the negative material 12 is the nano-structure porous silicon of doping, and the positive electrode 13 is
Lithium metal.Nano-structure porous silicon itself has pore structure, can effectively offset the volume generated in lithium ion battery discharge process
Expansion, and itself there is doping electric conductivity, so as to greatly improve the discharge performance of lithium ion battery.
In another embodiment, as depicted in figs. 1 and 2, the bottom of the separator 3 is coaxial therewith the heart equipped with 1 group
Annular protrusion 10.
In another embodiment, as depicted in figs. 1 and 2, the bottom of the separator 3 is coaxial therewith the heart equipped with 2 groups
Annular protrusion 10.
In another embodiment, as depicted in figs. 1 and 2, the bottom of the separator 3 is coaxial therewith the heart equipped with 3 groups
Annular protrusion 10.
1-3 groups annular protrusion 10 is set primarily to ensureing to ensure just while inside lithium ion cell resistance is reduced
The conduction of electric current between pole material 13 and positive cover 2 improves the discharge performance of lithium ion battery to greatest extent.
In another embodiment, as depicted in figs. 1 and 2, the cross section of the annular protrusion 10 for handstand taper or
It is semicircle.For the taper or semicircle of handstand when being contacted with positive cover 2, annular protrusion 10 and the contact area of positive cover 2 are minimum,
The internal resistance of lithium ion battery can be reduced to greatest extent.
In another embodiment, as shown in Figure 1, being equipped with to separate anode between the positive cover 2 and negative cover 1
Lid 2 and the insulating protective sleeve of negative cover 1 14.Insulating protective sleeve 14 can effectively separate negative cover 1 and the insulation of positive cover 2, keep away
Exempt from lithium ion battery short circuit, prevented security risk, made the security that product uses more preferably, in specific implementation process, insulation
Protective case 14 can be with 4 integrated injection molding of mould-injection part.
Embodiment described above only expresses specific embodiment of the present utility model, and description is more specific and detailed,
But it should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (8)
1. a kind of button lithium ion battery, which is characterized in that including negative cover, positive cover and circular separator；The negative cover
It is sealed with the edge of the positive cover by mould-injection part, and positive cover and negative cover surround a closed cavity, the anode
Lid and the coating of the inner surface of the negative cover have the anti-corrosion of metal layer of high oxidation potential, are evenly distributed on the inner surface of the negative cover
There is multiple arcs protrusion, and the negative pole currect collecting net being bonded with the arc convex is equipped at the inner surface center of negative cover, it is described
Separator is arranged in the positive cover, and the edge of the separator upwardly extends to form edge, is transversely provided on the edge more
A heat emission hole, the bottom of the separator are equipped with the annular protrusion for being coaxial therewith the heart；Between the negative cover and the separator
Equipped with membrane, negative material is equipped between the negative cover and the membrane, is equipped with just between the membrane and the separator
Pole material.
2. button lithium ion battery according to claim 1, which is characterized in that the membrane is glass fibre membrane.
3. button lithium ion battery according to claim 1, which is characterized in that the anti-corrosion of metal layer is metallic aluminium or gold
Belong to titanium.
4. button lithium ion battery according to claim 1, which is characterized in that the aperture of the heat emission hole is 0.4-
0.8mm。
5. button lithium ion battery according to claim 1, which is characterized in that the negative material is more for the nanometer of doping
Hole silicon, the positive electrode are lithium metal.
6. button lithium ion battery according to claim 1, which is characterized in that the bottom of the separator is equipped with 1-3 groups
It is coaxial therewith the annular protrusion of the heart.
7. button lithium ion battery according to claim 1, which is characterized in that the cross section of the annular protrusion is handstand
Taper or semicircle.
8. button lithium ion battery according to claim 1, which is characterized in that be equipped between the positive cover and negative cover
For separating the insulating protective sleeve of positive cover and negative cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426535.0U CN207459092U (en) | 2017-10-31 | 2017-10-31 | A kind of button lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426535.0U CN207459092U (en) | 2017-10-31 | 2017-10-31 | A kind of button lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207459092U true CN207459092U (en) | 2018-06-05 |
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ID=62252814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721426535.0U Expired - Fee Related CN207459092U (en) | 2017-10-31 | 2017-10-31 | A kind of button lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207459092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013525A (en) * | 2021-03-08 | 2021-06-22 | 张家港希弗新能源科技有限公司 | Lithium carbon fluoride battery |
| CN115461927A (en) * | 2020-04-30 | 2022-12-09 | 株式会社村田制作所 | Secondary battery |
-
2017
- 2017-10-31 CN CN201721426535.0U patent/CN207459092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115461927A (en) * | 2020-04-30 | 2022-12-09 | 株式会社村田制作所 | Secondary battery |
| CN113013525A (en) * | 2021-03-08 | 2021-06-22 | 张家港希弗新能源科技有限公司 | Lithium carbon fluoride battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20181031 |