JP2005043339A - 充電率推定方法、充電率推定装置、電池システム及び車両用電池システム - Google Patents
充電率推定方法、充電率推定装置、電池システム及び車両用電池システム Download PDFInfo
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- JP2005043339A JP2005043339A JP2004069762A JP2004069762A JP2005043339A JP 2005043339 A JP2005043339 A JP 2005043339A JP 2004069762 A JP2004069762 A JP 2004069762A JP 2004069762 A JP2004069762 A JP 2004069762A JP 2005043339 A JP2005043339 A JP 2005043339A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004364 calculation method Methods 0.000 claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 7
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- 238000012986 modification Methods 0.000 description 11
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- 230000008569 process Effects 0.000 description 9
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- 230000002238 attenuated effect Effects 0.000 description 4
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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]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
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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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
【解決手段】 本発明の充電率推定方法は、負荷に電力を供給する二次電池の充電率を推定すべく、処理に必要なパラメータの初期設定を行った後(ステップS11)、充放電終了後の所定時間内に二次電池の電圧を測定して時間軸上で複数の電圧測定値を取得し(ステップS12)、それらを用いて逐次計算を行い(ステップS14〜S21)、二次電池の開回路電圧の時間特性を近似する4次以上の指数減衰関数の係数を決定し、少なくとも決定した係数に基づき二次電池の開回路電圧の収束値を求め(ステップS22)、開回路電圧の収束値に基づき充電率を推定する(ステップS24)。
【選択図】 図4
Description
(1)式において、入力Xを経過時間とし、出力Yを開回路電圧とし、上記各係数を決定することにより、二次電池10の任意の時点における開回路電圧を高精度に近似することができる。
11…充電回路
12…電圧センサ
13…制御部
14…記憶部
20…負荷
Claims (10)
- 負荷に電力を供給する二次電池の充電率を推定する充電率推定方法であって、
充放電終了後の所定時間内に前記二次電池の電圧を測定し、時間軸上で複数の電圧測定値を取得し、
前記複数の電圧測定値を用いて逐次計算を行い、前記二次電池の開回路電圧の時間特性を近似する4次以上の指数減衰関数の係数を決定し、
少なくとも前記決定した係数に基づき前記二次電池の開回路電圧の収束値を求め、
前記開回路電圧の収束値に基づき前記充電率を推定する、
ことを特徴とする充電率推定方法。 - 時間軸上で前記複数の電圧測定値を取得するタイミングに応じて、前記4次以上の指数減衰関数に含まれる所定の項を除外して前記二次電池の開回路電圧の収束値を求めることを特徴とする請求項1に記載の充電率推定方法。
- 負荷に電力を供給する二次電池の充電率を推定する充電率推定装置であって、
前記二次電池の電圧を測定する電圧センサと、
前記充電率を推定するための演算を実行制御する制御部と、
前記電圧センサから出力される電圧値と、前記制御部による演算処理に必要なデータを記憶する記憶部と、
を備え、
前記制御部は、充放電終了後の所定時間内に前記電圧センサの出力を読み取り、時間軸上で複数の電圧測定値を取得して前記記憶部に格納し、前記記憶部から読み出した複数の電圧測定値を用いて逐次計算を行い、前記二次電池の開回路電圧の時間特性を近似する4次以上の指数減衰関数の係数を決定し、前記決定した係数に基づき前記二次電池の開回路電圧の収束値を求め、前記開回路電圧の収束値に基づき前記充電率を推定することにより前記演算を実行制御することを特徴とする充電率推定装置。 - 時間軸上で前記複数の電圧測定値を取得するタイミングに応じて、前記4次以上の指数減衰関数に含まれる所定の項を除外して前記二次電池の開回路電圧の収束値を求めることを特徴とする請求項5に記載の充電率推定装置。
- 請求項5から請求項8のいずれかに記載の充電率推定装置を備えた電池システム。
- 請求項5から請求項8のいずれかに記載の充電率推定装置を備えるとともに、前記二次電池は、車両に搭載される負荷に電力を供給する車両用二次電池であることを特徴とする車両用電池システム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004069762A JP4015128B2 (ja) | 2003-07-09 | 2004-03-11 | 充電率推定方法、充電率推定装置、電池システム及び車両用電池システム |
EP04747217A EP1643260B1 (en) | 2003-07-09 | 2004-07-08 | Charge rate estimating method, charge rate estimating unit and battery system |
PCT/JP2004/009749 WO2005006006A1 (ja) | 2003-07-09 | 2004-07-08 | 充電率推定方法、充電率推定装置及び電池システム |
DE602004017471T DE602004017471D1 (de) | 2003-07-09 | 2004-07-08 | Ladezustandsschätzverfahren, gerät und batteriesystem |
US10/552,674 US7525284B2 (en) | 2003-07-09 | 2004-07-08 | Charging rate estimating method, charging rate estimating unit and battery system |
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JP2003194655 | 2003-07-09 | ||
JP2004069762A JP4015128B2 (ja) | 2003-07-09 | 2004-03-11 | 充電率推定方法、充電率推定装置、電池システム及び車両用電池システム |
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JP2005043339A true JP2005043339A (ja) | 2005-02-17 |
JP4015128B2 JP4015128B2 (ja) | 2007-11-28 |
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US (1) | US7525284B2 (ja) |
EP (1) | EP1643260B1 (ja) |
JP (1) | JP4015128B2 (ja) |
DE (1) | DE602004017471D1 (ja) |
WO (1) | WO2005006006A1 (ja) |
Cited By (18)
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WO2006129802A1 (ja) * | 2005-06-03 | 2006-12-07 | The Furukawa Electric Co., Ltd. | 充電率/残存容量推定方法、電池の状態検知センサ及び電池電源システム |
JP2008096328A (ja) * | 2006-10-13 | 2008-04-24 | Furukawa Electric Co Ltd:The | 充電率推定方法、充電率推定装置及び二次電池電源システム |
EP1975635A2 (en) | 2007-03-29 | 2008-10-01 | The Furukawa Electric Co., Ltd. | Method and device for estimating battery residual capacity, and battery power supply system |
JP2009257784A (ja) * | 2008-04-11 | 2009-11-05 | Furukawa Electric Co Ltd:The | 蓄電池の状態検知方法 |
JP2010014636A (ja) * | 2008-07-07 | 2010-01-21 | Furukawa Electric Co Ltd:The | 二次電池の状態検知方法、状態検知装置及び二次電池電源システム |
JP4860768B2 (ja) * | 2007-08-22 | 2012-01-25 | エルジー・ケム・リミテッド | バッテリー開放電圧推定装置、これを用いたバッテリー充電状態推定装置及びその制御方法 |
JP2012508880A (ja) * | 2008-11-17 | 2012-04-12 | オーチス エレベータ カンパニー | バッテリ充電状態較正 |
DE102012102375A1 (de) | 2011-03-23 | 2012-09-27 | Suzuki Motor Corp. | Batteriezustands-Überwachungsvorrichtung |
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WO2020175667A1 (ja) | 2019-02-28 | 2020-09-03 | 古河電気工業株式会社 | 充電可能電池状態検出装置および充電可能電池状態検出方法 |
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2004
- 2004-03-11 JP JP2004069762A patent/JP4015128B2/ja not_active Expired - Lifetime
- 2004-07-08 WO PCT/JP2004/009749 patent/WO2005006006A1/ja active Application Filing
- 2004-07-08 EP EP04747217A patent/EP1643260B1/en not_active Expired - Lifetime
- 2004-07-08 DE DE602004017471T patent/DE602004017471D1/de not_active Expired - Lifetime
- 2004-07-08 US US10/552,674 patent/US7525284B2/en not_active Expired - Lifetime
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Publication number | Publication date |
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WO2005006006A1 (ja) | 2005-01-20 |
EP1643260A4 (en) | 2006-08-16 |
US7525284B2 (en) | 2009-04-28 |
US20060208704A1 (en) | 2006-09-21 |
EP1643260A1 (en) | 2006-04-05 |
EP1643260B1 (en) | 2008-10-29 |
DE602004017471D1 (de) | 2008-12-11 |
WO2005006006A9 (ja) | 2005-03-17 |
JP4015128B2 (ja) | 2007-11-28 |
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