JP2012090392A - 電池状態監視装置 - Google Patents
電池状態監視装置 Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- 238000012806 monitoring device Methods 0.000 claims description 27
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 29
- 238000000034 method Methods 0.000 description 25
- 238000006243 chemical reaction Methods 0.000 description 16
- 238000012545 processing Methods 0.000 description 15
- 230000005856 abnormality Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
- 238000003745 diagnosis Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process 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
- H01M10/48—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
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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
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
【解決手段】マイコン70により、複数の電池セル11のうち、セル電圧が最も高い電池セル11およびセル電圧が最も低い電池セル11の少なくとも2つの電池セル11を特定し、これらの電池セル11を重点的に監視する。このように、監視すべき電池セル11を限定することで、監視対象の電池セル11を高速に監視することができる。また、監視すべき電池セル11のセル電圧を検出しているので、セル電圧を精度良く監視することができる。したがって、各電池セル11を高速かつ精度良く監視することができる。
【選択図】図1
Description
以下、本発明の第1実施形態について図を参照して説明する。図1は、本実施形態に係る電池状態監視装置を含んだ電池状態監視システムの全体構成図である。この図に示されるように、電池状態監視システムは、組電池10と電池状態監視装置20とを備えて構成されている。
本実施形態では、第1実施形態と異なる部分について説明する。上記第1実施形態では、全セル電圧検出方式によりセル電圧を検出していたが、本実施形態では全セル電圧検出方式とコンパレータ方式とを併用して電池セル11を監視する構成となっている。
本実施形態では、第2実施形態と異なる部分について説明する。図7(a)は、本実施形態に係るセル番号生成回路94の構成図であり、図7(b)はセル番号生成回路94から出力されるSIN信号の一例を示した図である。
本実施形態では、第2、第3実施形態と異なる部分について説明する。本実施形態では、例えば図3および図4に示される構成において、比較器80における所定の閾値は2値に設定されている。本実施形態においても所定の閾値は電池セル11の常用使用電圧範囲内に設定されている。
本実施形態では、第1〜第4実施形態と異なる部分について説明する。上述のように、図1や図3に示される電池状態監視装置20の構成において、マイコン70は組電池10の残存容量SOCを取得するために組電池10を構成する各電池セル11のセル電圧と組電池10に流れる電流とを測定している。
上記各実施形態で示された電池状態監視装置20の構成は一例であり、上記で示した構成に限定されることなく、本発明の特徴を含んだ他の構成とすることもできる。例えば、上記各実施形態では、組電池10を構成するすべての電池セル11に対して1つの比較器80や電圧変換回路90が設けられていたが、組電池10を構成する複数の電池セル11を所定の数で区分けしたブロック毎に設けても良い。
11 電池セル
20 電池状態監視装置
30 セル選択スイッチ
40 差動増幅回路
50 A/Dコンバータ
70 マイコン(監視手段)
80 比較器
81d〜83d コンパレータ
90 電圧変換回路
94 セル番号生成回路
Claims (10)
- 直列接続された複数の電池セルのセル電圧を検出し、検出したセル電圧に基づいて前記複数の電池セルの状態をそれぞれ監視する電池状態監視装置であって、
前記複数の電池セルのうち、セル電圧が最も高い電池セルおよびセル電圧が最も低い電池セルを監視する監視手段を備えていることを特徴とする電池状態監視装置。 - 前記複数の電池セルに対してそれぞれ設けられると共に前記電池セルのセル電圧と所定の閾値とをそれぞれ比較する複数のコンパレータを備えていることを特徴とする請求項1に記載の電池状態監視装置。
- 前記複数のコンパレータは、前記複数の電池セルのうち対応する電池セルのセル電圧と所定の閾値とをそれぞれ比較することで、前記複数の電池セルの中からセル電圧が最も高い電池セルおよびセル電圧が最も低い電池セルを検出することを特徴とする請求項2に記載の電池状態監視装置。
- 前記所定の閾値は、前記複数の電池セルの常用使用電圧範囲内に設定されていることを特徴とする請求項2または3に記載の電池状態監視装置。
- 前記所定の閾値は、2値以上に設定されていることを特徴とする請求項2ないし4のいずれか1つに記載の電池状態監視装置。
- 前記所定の閾値は、1つの値に設定されていることを特徴とする請求項2ないし4のいずれか1つに記載の電池状態監視装置。
- 前記複数のコンパレータの出力に基づき、前記複数の電池セルの中からセル電圧が最も高い電池セルもしくはセル電圧が最も低い電池セルを確定した後に、当該確定した電池セルを特定する情報を含むデータを前記監視手段に出力するセル番号生成回路を備えていることを特徴とする請求項6に記載の電池状態監視装置。
- 前記監視手段は、前記複数の電池セルに対して所定量の充電または放電を行った後に、前記複数の電池セルの監視を開始することを特徴とする請求項6または7に記載の電池状態監視装置。
- 前記監視手段は、前記複数の電池セルのうち内部抵抗が最も高い電池セルを監視することを特徴とする請求項1ないし8のいずれか1つに記載の電池状態監視装置。
- 直列接続された複数の電池セルのセル電圧を検出し、検出したセル電圧に基づいて前記複数の電池セルの状態をそれぞれ監視する電池状態監視装置であって、
前記複数の電池セルのうち内部抵抗が最も高い電池セルの監視を行う監視手段を備えていることを特徴とする電池状態監視装置。
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JP2010233579A JP5299397B2 (ja) | 2010-10-18 | 2010-10-18 | 電池状態監視装置 |
US13/275,585 US8878493B2 (en) | 2010-10-18 | 2011-10-18 | Apparatus for monitoring operation state of battery pack composed of plurality of cells mutually connected in series |
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JP2010233579A JP5299397B2 (ja) | 2010-10-18 | 2010-10-18 | 電池状態監視装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014023228A (ja) * | 2012-07-16 | 2014-02-03 | Denso Corp | 電池監視装置 |
EP2876455A1 (en) | 2013-11-21 | 2015-05-27 | Sony Corporation | Power storage member monitoring device, power storage apparatus, and power storage member monitoring method |
JP2017050166A (ja) * | 2015-09-02 | 2017-03-09 | Fdk株式会社 | 蓄電モジュール |
US10473726B2 (en) | 2016-01-04 | 2019-11-12 | Samsung Electronics Co., Ltd. | Battery management method and battery management apparatus |
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WO2014115513A1 (ja) * | 2013-01-22 | 2014-07-31 | 三洋電機株式会社 | 電池モジュールの故障推定システム |
JP2015119614A (ja) * | 2013-11-15 | 2015-06-25 | 株式会社リコー | 蓄電状態調整回路、蓄電状態調整装置及び電池パック |
JP2015154606A (ja) | 2014-02-14 | 2015-08-24 | 株式会社リコー | 蓄電状態調整回路、蓄電状態調整システム、及び電池パック |
EP3149499B1 (en) * | 2014-06-02 | 2018-01-31 | Volvo Truck Corporation | A method and system for monitoring the status of battery cells |
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Cited By (5)
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JP2014023228A (ja) * | 2012-07-16 | 2014-02-03 | Denso Corp | 電池監視装置 |
EP2876455A1 (en) | 2013-11-21 | 2015-05-27 | Sony Corporation | Power storage member monitoring device, power storage apparatus, and power storage member monitoring method |
US10845423B2 (en) | 2013-11-21 | 2020-11-24 | Murata Manufacturing Co., Ltd. | Power storage member monitoring device, power storage apparatus, and power storage member monitoring method |
JP2017050166A (ja) * | 2015-09-02 | 2017-03-09 | Fdk株式会社 | 蓄電モジュール |
US10473726B2 (en) | 2016-01-04 | 2019-11-12 | Samsung Electronics Co., Ltd. | Battery management method and battery management apparatus |
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US20120153961A1 (en) | 2012-06-21 |
JP5299397B2 (ja) | 2013-09-25 |
US8878493B2 (en) | 2014-11-04 |
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