CN2305759Y - Lithium ion button cell - Google Patents
Lithium ion button cell Download PDFInfo
- Publication number
- CN2305759Y CN2305759Y CN97241178U CN97241178U CN2305759Y CN 2305759 Y CN2305759 Y CN 2305759Y CN 97241178 U CN97241178 U CN 97241178U CN 97241178 U CN97241178 U CN 97241178U CN 2305759 Y CN2305759 Y CN 2305759Y
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- reaction layer
- electrochemical reaction
- collector
- electrochemical
- 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 - Lifetime
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 31
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000036632 reaction speed Effects 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910014806 LiMn2O4 LiNiO2 Inorganic materials 0.000 description 1
- YZSKZXUDGLALTQ-UHFFFAOYSA-N [Li][C] Chemical compound [Li][C] YZSKZXUDGLALTQ-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000036755 cellular response Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006900 dealkylation reaction Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Images
Classifications
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- Y02E60/12—
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to a lithium ion button cell which comprises an electrochemical reaction layer, a current collecting body, electrolyte fluid, an electrode shell and a sealing ring. The electrochemical reaction layer is a multi-layer electrochemical reaction layer which is composed of a positive electrode, a membrane and a negative electrode. When the utility model is used, the effective reaction area of the lithium ion can be enlarged, and the reaction speed of the electrochemical embedment and the electrochemical emergence of the lithium ion cell can be increased. The utility model has the advantages of high service voltage, high current, good impulse performance, strong load capacity, good safety performance, good circulation performance, light weight, small volume, high specific energy, etc. The utility model is suitable for portable-type miniature electrical equipment and other large-sized electrical equipment.
Description
The utility model relates to a kind of battery, especially directly changes the lithium ion battery that chemical energy is an electric energy.
Along with development of electronic technology, portable set such as portable computer, portable video camera, mobile phone use amount increase considerably, and lithium ion battery has shown great vitality.At present, this lithium ion rechargeable alkaline cells is in the majority with button cell, in light weight, volume is little, also can make the cartridge type battery, is convenient to use other aspects.Positive electrode is generally Li
+With the composite oxides of Co, Ni, Mn etc., as negative material graphite, coke etc. are arranged, it all adopts the active material that can supply the free embedding of lithium ion to take off, and positive and negative pole material is made the certain thickness reaction block respectively, separates with a barrier film, during charging, Li
+Overflow from positive pole, embed negative pole; During discharge, Li
+Then deviate from, insert positive pole, only in the reaction block effective area, carry out from negative pole, continuous charge and discharge cycles, material structure does not have significant change.Avoid in the charging process as negative pole with material with carbon element alternative metals lithium, lithium metal deposits on cathode of lithium, produces lithium skill crystalline substance, and in a single day this crystal breaks through membrane layer will short circuit and influence fail safe and cyclicity.
The purpose of this utility model provides a kind of lithium ion battery that enlarges cell electrochemical reaction positive and negative electrode material response area, the specific energy height, and load capacity strengthens, and the while is in light weight, volume is little, convenient being suitable for.
The realization the technical solution of the utility model is: a kind of lithium-ion button battery, by electrochemical reaction layer, collector, sealing ring, electrode shell, electrolyte is formed, it is characterized in that: by anodal [2], barrier film [9], the electrochemical reaction layer [10] that negative pole [8] constitutes is the multilayered electrochemical conversion zone, wherein anodal [2] connect with collector [3], negative pole [8] connects with collector [7], electrochemical reaction layer [10] and collector [3], [7] place both positive and negative polarity shell [1], [5] in, collector [3], [7] respectively with just, negative electrode casing [1], [5] connect, just, negative electrode casing [1], [5] be filled with electrolyte [4] and driving fit in.
And electrochemical reaction layer [10] reaction surface can be that tetrahedron, six shapes, polygon or two sides are circular arc, and positive and negative electrode shell [1], [5] can be by sealing ring [6] driving fit.
And electrochemical reaction layer [10] anodal [2], negative pole [8] material can be stratiform or tunnel structure, and laminate shape and thickness are 0.01mm～0.5mm, and collector [3], [7] can be that laminar or the netted and thickness of metal material is at 0.1um～40um.
The utlity model has following advantage:
1, because the positive and negative electrode material is stratiform or tunnel structure active material, the positive and negative electrode material is stacked to be the multilayered electrochemical conversion zone, has enlarged existing button cell response area, has effectively increased the lithium ion embedding, has deviate from the electrochemical reaction ability, thereby specific power improves greatly, the operating voltage height.
2, button cell is in light weight, volume is little, seals simple and reliable.Can be used for portable set, overcome the problem that lithium metal is made the lithium secondary battery generation Li dendrite of negative pole, have more fail safe owing to adopt.
3, in the battery profile during rounded, square or other shapes, the electrochemical reaction layer of placing in the positive and negative electrode shell can be that tetrahedron, six shapes, polygon or two sides are circular arc, enlarge the reaction effective area as far as possible, have good heavy current pulse performance.
4, have the favorable charge-discharge cycle characteristics, cycle life is good, and memory-less effect, and is of many uses, not only to little, the lightweight miniature electrical equipment development of volume, also can develop to Large Electric equipment.
Fig. 1, the cross section view of lithium ion battery;
Fig. 2, lithium ion battery electrochemical reaction layer;
Fig. 3, one of lithium ion battery electrochemical reaction layer vertical view;
Fig. 4, two of lithium ion battery electrochemical reaction layer vertical view;
Fig. 5, three of lithium ion battery electrochemical reaction layer vertical view.
With reference to Fig. 1,2,3,4,5 anode material for lithium-ion batteries LiCoO
2, LiMn
2O
4LiNiO
2Deng the composite oxides of lithium and bonding agent proper proportion applied thickness is that positive electrode [2] joins aluminium foil and makes collector [3] on the aluminium foil about 0.02mm, and aluminium foil can be laminar or netted; Negative material generally can be by graphite, coke, pyrolytic carbon, carbon fiber, amorphous Sn O
2Being coated in thickness with the bonding agent proper proportion is on the Copper Foil about 0.02mm, negative material [8] joins Copper Foil and makes collector [7], Copper Foil can be laminar or netted, with positive pole [2], barrier film [9], the electrochemical reaction layer [10] of the stacked formation of negative pole [8], be rolled into the multilayered electrochemical conversion zone, with multilayer lithium ion electrochemical conversion zone and collector [3], [7] just put, negative electrode casing [1], [5] in, collector [2] connects with anode cover [1], collector [7] connects with negative electrode casing [5], electrode shell [1], [5] Nei electrolyte [4] is by sealed picture [6] driving fit, wherein electrolyte [4] can be by organic solvent, as ethylene carbonate, dimethyl carbonate and conducting salt are formed as lithium perchlorate.Embed, deviate from reaction material and all have stratiform or tunnel structure as lithium ion battery electrochemistry, during charging, lithium ion moves toward negative pole from anodal, during discharge, lithium ion moves toward anodal from negative pole, during charging, anodal lithium ion embeds between the carbon-coating of negative pole, in battery, form the lithium carbon intercalation compound, and lithium ion can move between both positive and negative polarity when discharging and recharging.Carry out multilayer lithium ion embedding dealkylation reaction, specific energy improves greatly, when the profile of lithium ion battery can be square, circular or other shapes, for ease of effectively utilizing its lithium ion battery inner casing volume or cross-sectional area, multilayer electro-chemical reaction layer can make that tetrahedron, six shapes, polygon or two sides are circular arc shown in Fig. 3,4,5, more effectively enlarge response area. increase lithium ion battery respond, safety and cycle life height.
Claims (3)
1, a kind of lithium-ion button battery, by electrochemical reaction layer, collector, sealing ring, electrode shell electrolyte is formed, it is characterized in that: by anodal [2], barrier film [9], the electrochemical reaction layer [10] that negative pole [8] constitutes is the multilayered electrochemical conversion zone, wherein anodal [2] connect with collector [3], negative pole [8] connects with collector [7], electrochemical reaction layer [10] and collector [3], [7] place both positive and negative polarity shell [1], [5] in, collector [3], [7] respectively with just, negative electrode casing [1], [5] connect, just, negative pole housing [1], [5] be filled with electrolyte [4] and driving fit in.
2, lithium-ion button battery according to claim 1 is characterized in that: electrochemical reaction layer [10] reaction surface can be that tetrahedron, six shapes, polygon or two sides are circular arc, and positive and negative electrode shell [1], [5] can be by sealing ring [6] driving fit.
3, according to claim 1,2 described lithium-ion button batteries, it is characterized in that: the positive pole [2] of electrochemical reaction layer [10], negative pole [8] material can be stratiform or tunnel structure, laminate shape and thickness is 0.01mm～0.5mm, and collector [3], [7] can be that laminar or the netted and thickness of metal material is at 0.1um～40um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97241178U CN2305759Y (en) | 1997-08-18 | 1997-08-18 | Lithium ion button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97241178U CN2305759Y (en) | 1997-08-18 | 1997-08-18 | Lithium ion button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2305759Y true CN2305759Y (en) | 1999-01-27 |
Family
ID=33950719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97241178U Expired - Lifetime CN2305759Y (en) | 1997-08-18 | 1997-08-18 | Lithium ion button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2305759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944587A (en) * | 2010-08-06 | 2011-01-12 | 广州市鹏辉电池有限公司 | Lithium manganese button secondary cell cathode and cell |
| CN102694202A (en) * | 2012-06-29 | 2012-09-26 | 广东凯德能源科技有限公司 | Button type lithium ion battery |
-
1997
- 1997-08-18 CN CN97241178U patent/CN2305759Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944587A (en) * | 2010-08-06 | 2011-01-12 | 广州市鹏辉电池有限公司 | Lithium manganese button secondary cell cathode and cell |
| CN101944587B (en) * | 2010-08-06 | 2013-10-16 | 广州鹏辉能源科技股份有限公司 | Lithium manganese button secondary cell cathode and cell |
| CN102694202A (en) * | 2012-06-29 | 2012-09-26 | 广东凯德能源科技有限公司 | Button type lithium ion battery |
| CN102694202B (en) * | 2012-06-29 | 2014-07-30 | 广东凯德能源科技有限公司 | Button type lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |