JP2021012065A - 電池監視装置 - Google Patents
電池監視装置 Download PDFInfo
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- JP2021012065A JP2021012065A JP2019125476A JP2019125476A JP2021012065A JP 2021012065 A JP2021012065 A JP 2021012065A JP 2019125476 A JP2019125476 A JP 2019125476A JP 2019125476 A JP2019125476 A JP 2019125476A JP 2021012065 A JP2021012065 A JP 2021012065A
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current 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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- 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
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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
- H01M10/44—Methods for charging or discharging
-
- 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
-
- 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
-
- 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
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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
-
- 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
Abstract
Description
以下、「電池監視装置」を車両(例えば、ハイブリッド車や電気自動車)の電源システムに適用した第1実施形態について、図面を参照しつつ説明する。
測定周波数fが周波数閾値fmのときは、図4に示すように、確実に位相θ>0となり、かつ、抵抗Racとなる周波数と、抵抗Racと抵抗Rdcの合計値Rtotalとなる周波数の間になる。このため、位相θがゼロで、測定周波数fが周波数閾値fmよりも大きい場合には、複素インピーダンスの絶対値|Z|が抵抗Racに相当すると判定することができる。一方、位相θがゼロで、測定周波数fが周波数閾値fmよりも小さい場合には、複素インピーダンスの絶対値|Z|が合計値Rtotalに相当すると判定することができる。
次に、第2実施形態の電池監視装置50について説明する。インピーダンス算出処理において、Avarage(X)、Avarage(Y)の算出精度を向上させるためには、ある程度の期間、電池セル42から交流信号Iを出力させ、掛算値X,Yをある程度繰り返して取得することが望ましい。しかしながら、図3の電池セル42のインピーダンスモデルに示すように、コンデンサCが存在しているため、掛算値X,Yをある程度繰り返して取得する場合、図12に示すような問題が生じる。
上記実施形態を以下のように変更してもよい。
Claims (6)
- 電解質と複数の電極とを含む蓄電池(42)の状態を監視する電池監視装置(50)において、
前記蓄電池に交流信号を流させる信号発生部(60)と、
前記交流信号が流れたときにおける前記蓄電池の電圧変動を応答信号として取得する応答信号取得部(51,65)と、
前記蓄電池の複素インピーダンスを算出する演算部(64)と、を備え、
前記演算部は、前記交流信号に同期して出力される第1の参照信号と前記応答信号との掛算値、及び前記交流信号の位相をシフトさせた第2の参照信号と前記応答信号との掛算値に基づいて、前記蓄電池の複素インピーダンスを算出するように構成されており、
前記交流信号は、矩形波信号であり、
前記第1の参照信号は、前記交流信号と同期して出力される矩形波信号であり、
前記第2の参照信号は、矩形波信号であって、前記第1の参照信号と重複して出力されないように位相がずらされている電池監視装置。 - 前記交流信号の出力周期の開始直前又は終了間際における前記蓄電池の電圧値を取得する電圧取得部(51、61)を備え、
前記応答信号取得部は、前記電圧取得部により取得した前記電圧値を基準とした場合における前記蓄電池の電圧変動を前記応答信号として取得する請求項1に記載の電池監視装置。 - 前記演算部は、算出した前記複素インピーダンスの位相又は虚部が所定の閾値よりも小さい場合、算出した複素インピーダンスに基づいて、制御指標を特定する請求項1又は2に記載の電池監視装置。
- 前記蓄電池には、前記蓄電池の蓄電状態に応じて、前記蓄電池を充放電させる均等化回路(52)が接続されており、
前記均等化回路は、抵抗及びスイッチ部の直列接続体により構成されており、
前記信号発生部は、前記蓄電池を電源として前記交流信号を出力させるように、前記均等化回路に対して指示をする請求項1〜3のうちいずれか1項に記載の電池監視装置。 - 前記矩形波信号は、デューティ比が1/2とされる請求項1〜4のうちいずれか1項に記載の電池監視装置。
- 前記第1の参照信号の振幅が正側とされた場合、第2の参照信号の振幅は、負側とされ、前記第2の参照信号は、前記第1の参照信号に対して1/2周期位相がずらされている請求項1〜5のうちいずれか1項に記載の電池監視装置。
Priority Applications (3)
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JP2019125476A JP7226147B2 (ja) | 2019-07-04 | 2019-07-04 | 電池監視装置 |
CN202010618897.XA CN112180263A (zh) | 2019-07-04 | 2020-06-30 | 电池监视装置 |
US16/921,036 US11644512B2 (en) | 2019-07-04 | 2020-07-06 | Battery monitoring device |
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JP2019125476A JP7226147B2 (ja) | 2019-07-04 | 2019-07-04 | 電池監視装置 |
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JP2021012065A true JP2021012065A (ja) | 2021-02-04 |
JP7226147B2 JP7226147B2 (ja) | 2023-02-21 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023276577A1 (ja) * | 2021-06-29 | 2023-01-05 | 株式会社デンソー | 電池測定装置及び電池測定方法 |
JP7482920B2 (ja) | 2022-03-14 | 2024-05-14 | 本田技研工業株式会社 | 制御装置、制御方法及びプログラム |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7259614B2 (ja) * | 2019-07-19 | 2023-04-18 | 株式会社デンソー | 電池監視装置 |
EP3998487A1 (en) | 2021-02-19 | 2022-05-18 | Lilium eAircraft GmbH | Battery management system for an electric air vehicle |
US11549994B1 (en) | 2021-11-18 | 2023-01-10 | Beta Air, Llc | Pack monitoring unit for an electric aircraft battery pack and methods of use for battery management |
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JPH04109174A (ja) * | 1990-08-29 | 1992-04-10 | Advantest Corp | インピーダンス測定装置 |
JP2006071306A (ja) * | 2004-08-31 | 2006-03-16 | Hioki Ee Corp | 電池特性測定装置 |
JP2014052186A (ja) * | 2012-09-04 | 2014-03-20 | Honda Motor Co Ltd | 2次電池の容量維持率推定方法 |
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US10775440B2 (en) * | 2016-08-28 | 2020-09-15 | The Board Of Trustees Of The University Of Alabama | Methods, apparatuses, and systems for measuring impedance spectrum, power spectrum, or spectral density using frequency component analysis of power converter voltage and current ripples |
US11435405B2 (en) * | 2017-07-13 | 2022-09-06 | The Governing Council Of The University Of Toronto | Electrical architecture for electrochemical impedance spectroscopy |
JP6567616B2 (ja) * | 2017-09-11 | 2019-08-28 | プライムアースEvエナジー株式会社 | 二次電池状態判定方法及び二次電池状態判定装置 |
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KR102002859B1 (ko) * | 2018-03-26 | 2019-07-23 | 숭실대학교산학협력단 | 배터리 진단 기능을 갖는 충전기 및 그 제어방법 |
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JP7172838B2 (ja) | 2019-04-26 | 2022-11-16 | 株式会社デンソー | 電池監視装置 |
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- 2019-07-04 JP JP2019125476A patent/JP7226147B2/ja active Active
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- 2020-06-30 CN CN202010618897.XA patent/CN112180263A/zh active Pending
- 2020-07-06 US US16/921,036 patent/US11644512B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04109174A (ja) * | 1990-08-29 | 1992-04-10 | Advantest Corp | インピーダンス測定装置 |
JP2006071306A (ja) * | 2004-08-31 | 2006-03-16 | Hioki Ee Corp | 電池特性測定装置 |
JP2014052186A (ja) * | 2012-09-04 | 2014-03-20 | Honda Motor Co Ltd | 2次電池の容量維持率推定方法 |
JP2014126532A (ja) * | 2012-12-27 | 2014-07-07 | Waseda Univ | 電気化学システム |
JP2018190502A (ja) * | 2017-04-28 | 2018-11-29 | トヨタ自動車株式会社 | 二次電池システム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023276577A1 (ja) * | 2021-06-29 | 2023-01-05 | 株式会社デンソー | 電池測定装置及び電池測定方法 |
JP7482920B2 (ja) | 2022-03-14 | 2024-05-14 | 本田技研工業株式会社 | 制御装置、制御方法及びプログラム |
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US20210003638A1 (en) | 2021-01-07 |
US11644512B2 (en) | 2023-05-09 |
CN112180263A (zh) | 2021-01-05 |
JP7226147B2 (ja) | 2023-02-21 |
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