JP5372495B2 - 二次電池の保護回路及びそれを備えた二次電池 - Google Patents
二次電池の保護回路及びそれを備えた二次電池 Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
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- 229910045601 alloy Inorganic materials 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002388 carbon-based active material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
図1には、本発明の第1実施例による二次電池の保護回路の構成を示している。
図2には、本発明の第2実施例による二次電池の保護回路の構成を示している。
正極活物質としてのLiCoO2と導電剤、バインダーを混ぜ合わせてスラリーを調製し、該スラリーをアルミニウム箔にコーティングして正極を作製した。負極は、活物質としてカーボン系活物質を使用し、導電剤、バインダーを混ぜ合わせてスラリーを調製した後、該スラリーを銅箔にコーティングして負極を作製した。このような方式で作製された両電極の間にPE(ポリエチレン)/PP(ポリプロピレン)からなるセパレータを挟み込んで、巻回して金属缶からなる外装材に挿入することにより角形二次電池を構成した。ここで、上記角形二次電池における電解液としてはEC/PC系を使用し、二次電池の容量は800mAhであった。
バイメタルと抵抗を使っていないことを除いては、第3実施例と同様にして二次電池を用意し、第3実施例と同じ方法にて実験を施した。その結果を図5及び図6に示す。図5及び図6を参照すれば、上記二次電池が高温で爆発することが分かる。
抵抗を使っていないことを除いては、第3実施例と同様にして二次電池を用意し、第3実施例と同じ方法にて実験を施した。その結果を図7及び図8に示す。図7及び図8を参照すれば、上記二次電池が爆発しバイメタルが破壊していることが分かる。
2Ωの抵抗を使っていることを除いては、第3実施例と同様にして二次電池を用意し、第3実施例と同じ方法にて実験を施した。その結果を図9及び図10に示す。図9及び図10を参照すれば、上記二次電池の爆発や発火、バイメタルの破壊現象は起こっていないことが分かる。
5Ωの抵抗を使っていることを除いては、第3実施例と同様にして二次電池を用意し、第3実施例と同じ方法にて実験を施した。その結果を図11及び図12に示す。図11及び図12を参照すれば、上記二次電池の爆発や発火、バイメタルの破壊現象は起こっていないことが分かる。
Claims (8)
- 二次電池の保護回路であって、
前記二次電池の負極と外部電極の負極との間に第1端が共通に接続され、第2端がバイメタルに接続された抵抗と、
第1端と第2端とを備えたバイメタルと、
前記二次電池の負極と前記外部電極の負極とを接続する導線とを含んでなり、
室温で、前記バイメタルの第1端が、前記二次電池の正極と前記外部電極の正極とに接続され、前記バイメタルの第2端が抵抗の第2端と接続され、
高温で、前記バイメタルの第2端が、前記二次電池の正極と前記外部電極の負極とを抵抗を介して接続し、前記バイメタルの第1端が、前記二次電池の正極に正続されない、二次電池の保護回路。 - 前記抵抗が、前記二次電池の負極に形成された伝導体を介して前記二次電池の負極に接続されることを特徴とする、請求項1に記載の二次電池の保護回路。
- 前記抵抗が、前記バイメタルが破壊しないように十分に大きな抵抗値を有し、且つ、
前記二次電池が安全に放電するに足りる十分に小さい抵抗値を有する抵抗であることを特徴とする、請求項1又は2に記載の二次電池の保護回路。 - 前記抵抗が、前記バイメタルに直接接続され、又は前記バイメタルに導線を介して接続されることを特徴とする、請求項1に記載の二次電池の保護回路。
- 二次電池の保護回路であって、
第1端が前記二次電池の負極と接続され、第2端が外部電極の負極に接続される抵抗と、
第1端と第2端とを備えたバイメタルとを含んでなり、
室温で、前記バイメタルの第1端が、前記二次電池の正極と前記外部電極の正極とに接続され、前記バイメタルの第2端が、前記抵抗の第2端と前記外部電極の負極とに接続され、
高温で、前記バイメタルの第2端が、前記二次電池の正極と、前記外部電極の負極と、及び前記抵抗の第2端に接続され、前記バイメタルの第1端が、前記二次電池の正極に正続されない、二次電池の保護回路。 - 前記抵抗が、前記二次電池の負極に形成された伝導体を介して前記二次電池の負極に接続されることを特徴とする、請求項5に記載の二次電池の保護回路。
- 前記抵抗が、前記バイメタルが破壊しないように十分に大きな抵抗値を有し、且つ、
前記二次電池が、安全に放電するに足りる十分に小さい抵抗値を有する抵抗であることを特徴とする、請求項5又は6に記載の二次電池の保護回路。 - 請求項1乃至7の何れかに記載の二次電池の保護回路を備えた、二次電池。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2005-0038676 | 2005-05-10 | ||
KR20050038676 | 2005-05-10 | ||
PCT/KR2006/001750 WO2006121290A1 (en) | 2005-05-10 | 2006-05-10 | Protection circuit for secondary battery and secondary battery comprising the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013129000A Division JP5723925B2 (ja) | 2005-05-10 | 2013-06-19 | 二次電池の保護回路及びそれを備えた二次電池 |
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JP2008541374A JP2008541374A (ja) | 2008-11-20 |
JP5372495B2 true JP5372495B2 (ja) | 2013-12-18 |
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JP2008511054A Active JP5372495B2 (ja) | 2005-05-10 | 2006-05-10 | 二次電池の保護回路及びそれを備えた二次電池 |
JP2013129000A Active JP5723925B2 (ja) | 2005-05-10 | 2013-06-19 | 二次電池の保護回路及びそれを備えた二次電池 |
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Country Status (6)
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US (1) | US8574733B2 (ja) |
JP (2) | JP5372495B2 (ja) |
KR (1) | KR100786941B1 (ja) |
CN (1) | CN101171704B (ja) |
TW (1) | TW200707876A (ja) |
WO (1) | WO2006121290A1 (ja) |
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-
2006
- 2006-05-09 KR KR1020060041576A patent/KR100786941B1/ko active IP Right Grant
- 2006-05-10 WO PCT/KR2006/001750 patent/WO2006121290A1/en active Application Filing
- 2006-05-10 JP JP2008511054A patent/JP5372495B2/ja active Active
- 2006-05-10 US US11/431,360 patent/US8574733B2/en active Active
- 2006-05-10 CN CN2006800159844A patent/CN101171704B/zh active Active
- 2006-05-10 TW TW095116511A patent/TW200707876A/zh unknown
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TW200707876A (en) | 2007-02-16 |
US20060275653A1 (en) | 2006-12-07 |
US8574733B2 (en) | 2013-11-05 |
JP2008541374A (ja) | 2008-11-20 |
JP2013239442A (ja) | 2013-11-28 |
CN101171704A (zh) | 2008-04-30 |
CN101171704B (zh) | 2011-11-16 |
WO2006121290A1 (en) | 2006-11-16 |
KR20060116723A (ko) | 2006-11-15 |
KR100786941B1 (ko) | 2007-12-17 |
JP5723925B2 (ja) | 2015-05-27 |
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