JP4793338B2 - 組電池の状態監視装置 - Google Patents
組電池の状態監視装置 Download PDFInfo
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- JP4793338B2 JP4793338B2 JP2007176427A JP2007176427A JP4793338B2 JP 4793338 B2 JP4793338 B2 JP 4793338B2 JP 2007176427 A JP2007176427 A JP 2007176427A JP 2007176427 A JP2007176427 A JP 2007176427A JP 4793338 B2 JP4793338 B2 JP 4793338B2
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- 238000012806 monitoring device Methods 0.000 title claims description 24
- 238000012544 monitoring process Methods 0.000 claims description 163
- 238000004891 communication Methods 0.000 claims description 28
- 230000000903 blocking effect Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 description 17
- 238000009413 insulation Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 10
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- 238000011144 upstream manufacturing Methods 0.000 description 9
- 230000005856 abnormality Effects 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- 230000002265 prevention Effects 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
以下、本発明にかかる組電池の状態監視装置をハイブリッド車に搭載される組電池の状態監視装置に適用した第1の実施形態について、図面を参照しつつ説明する。
組電池10は、複数(ここではm×n個)のリチウム2次電池(電位セルB11〜Bnm)の直列接続体として構成されている。組電池10は、ブレーキ時の制動エネルギ等を車載発電機により電力回収する際の受け皿として機能するとともに、蓄えた電力を、DC−DCコンバータを介して低圧(例えば「12V」)の車載バッテリに供給するものである。また、組電池10は、車両加速時にはモータでエンジンをアシストする際の電力供給源として機能する。
上記各監視ユニットUiは、それぞれが集積回路(IC)としてチップ化されて構成されている。そしてこの場合、各監視ユニットUiを極力小型化するなどの目的から、各監視ユニットUiの耐圧は、各ブロック内の電池セルBi1〜Bimの電圧に応じて設定されている。しかし、この場合、例えば状態監視装置の製造時等において、各監視ユニットUiを互いに接続する際等に、監視ユニットUiの端子が何らかの部材と接触する際に静電気が生じることで、監視ユニットUiの端子に耐圧を超える電圧が印加されるおそれがある。
先の図1に示されるように、本実施形態では、組電池10の中央部分、すなわち、電池セルB(n/2)mと、電池セルB(n/2+1)1との間に、これらの間を絶縁するサービスプラグSPが設けられている。これにより、例えばメインテナンス時等の組電池10を含むループ回路の絶縁性を高めることが望まれる状況下、サービスプラグSPを開状態とすることで、組電池10の両端に何らかの部材が接触する場合であっても、組電池10を、電池セルB11〜B(n/2)mの直列接続体と、電池セルB(n/2+1)1〜Bnmの直列接続体とに分割することができる。ただし、サービスプラグSPが開状態とされるときであっても、監視ユニットU(n/2+1)及び監視ユニットU(n/2)の上記静電気保護機能と、クロック線CL又は信号線SLとによって、サービスプラグSPを迂回する経路が生成されるおそれがある。
以下、第2の実施形態について、先の第1の実施形態との相違点を中心に図面を参照しつつ説明する。
なお、上記各実施形態は、以下のように変更して実施してもよい。
Claims (9)
- 複数個の電池セルの直列接続体として構成される組電池を、単一の電池セル及び隣接するいくつかからなる電池セルのいずれかである単位電池にグループ化して且つ、これら各単位電池毎にその状態を監視する監視ユニットを備え、該監視ユニットのうちの2個以上の監視ユニットについて、隣接するもの同士が通信線によって互いに接続されてなる組電池の状態監視装置において、
前記通信線を介して前記監視ユニットのうちの低電位側から高電位側へと電流が流動することを阻止可能な阻止手段を備えることを特徴とする組電池の状態監視装置。 - 前記組電池には、隣接する前記単位電池間を導通及び遮断する組電池用開閉手段が設けられており、
前記阻止手段は、前記組電池用開閉手段によって絶縁される単位電池に対応する監視ユニット間に設けられてなることを特徴とする請求項1記載の組電池の状態監視装置。 - 前記阻止手段は、前記2個以上の監視ユニットのうちの高電位側の監視ユニットから低電位側の監視ユニットへと向かう方向を順方向とする整流手段を備えて構成されてなることを特徴とする請求項1又は2記載の組電池の状態監視装置。
- 前記整流手段は、前記通信線に設けられてなることを特徴とする請求項3記載の組電池の状態監視装置。
- 前記阻止手段は、前記通信線に設けられて且つ該通信線によって接続される監視ユニット間を導通及び遮断する通信線用開閉手段であることを特徴とする請求項1又は2記載の組電池の状態監視装置。
- 前記組電池には、隣接する前記単位電池間を導通及び遮断する組電池用開閉手段が設けられており、
前記通信線用開閉手段は、前記組電池用開閉手段と連動して開閉するよう設定されてなることを特徴とする請求項5記載の組電池の状態監視装置。 - 前記2個以上の監視ユニットによって監視対象とされる単位電池が前記組電池を構成する全ての単位電池であることを特徴とする請求項1〜6のいずれかに記載の組電池の状態監視装置。
- 前記阻止手段は、前記監視ユニットを略2等分する位置に設けられてなることを特徴とする請求項7記載の組電池の状態監視装置。
- 前記監視ユニットには、当該監視ユニット内部を静電気による過電圧から保護する静電気保護手段が、外部との信号の授受を行う端子に接続される態様にて備えられてなることを特徴とする請求項1〜8のいずれかに記載の組電池の状態監視装置。
Priority Applications (1)
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JP2007176427A JP4793338B2 (ja) | 2007-07-04 | 2007-07-04 | 組電池の状態監視装置 |
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JP2007176427A JP4793338B2 (ja) | 2007-07-04 | 2007-07-04 | 組電池の状態監視装置 |
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JP2009014498A JP2009014498A (ja) | 2009-01-22 |
JP4793338B2 true JP4793338B2 (ja) | 2011-10-12 |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2413152A4 (en) | 2009-03-25 | 2016-12-28 | Toshiba Kk | SECONDARY BATTERY AND VEHICLE |
JP2010249631A (ja) * | 2009-04-15 | 2010-11-04 | Yazaki Corp | 電池電圧計測装置 |
CN102303542B (zh) * | 2011-06-20 | 2012-10-10 | 江南大学 | 车用蓄电池检测系统 |
WO2013001680A1 (ja) | 2011-06-28 | 2013-01-03 | パナソニック株式会社 | 電圧計測装置 |
JP5620428B2 (ja) | 2012-03-26 | 2014-11-05 | 株式会社東芝 | 電池セル監視回路、および電池セル監視システム |
JPWO2015125936A1 (ja) * | 2014-02-20 | 2017-03-30 | 矢崎総業株式会社 | 電源装置 |
Family Cites Families (1)
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JP3649092B2 (ja) * | 2000-06-21 | 2005-05-18 | 日産自動車株式会社 | 組電池異常検出装置 |
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