JP7443646B2 - 二次電池性能推定装置、システムおよびその方法 - Google Patents
二次電池性能推定装置、システムおよびその方法 Download PDFInfo
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- 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
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- 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
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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
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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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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- 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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
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- 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
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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
- H02J7/007—Regulation of charging or discharging current or voltage
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
本出願は、2020年9月29日付の韓国特許出願第10-2020-0126848号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示されたすべての内容は本明細書の一部として含まれる。
Claims (8)
- 二次電池が所定の基準電圧で定電圧放電される放電期間に前記二次電池から出力される放電電流を測定する電流センサと、
前記基準電圧および時間経過による前記放電電流の変化に基づいて前記放電期間のSOC(State of Charge)変化による抵抗変化の関係を算出する制御部とを含み、
前記制御部は、
前記放電期間のSOC変化による抵抗変化の関係に基づいて、前記二次電池の電圧降下による抵抗である第1抵抗、前記放電期間に前記二次電池の活物質内にイオンが挿入されることによって発生する抵抗である第2抵抗、前記二次電池においてイオンの移動によって発生する分極抵抗である第3抵抗それぞれの抵抗値を算出し、
前記制御部は、
前記放電期間のSOC変化による抵抗変化の関係において、
前記放電期間の始点の抵抗値を前記第1抵抗に対する抵抗値とし、
前記放電期間の始点の抵抗値に対応する第1ポイントと、前記SOC変化に対する前記抵抗変化の関係における前記SOC変化に対する前記抵抗変化の比率が第1基準値を超える第2ポイントとを結ぶ延長線において、前記放電期間の終点での抵抗値を前記第2抵抗の上限値として算出し、
前記第2抵抗の上限値と前記第1抵抗の抵抗値との差に基づいて前記第2抵抗の抵抗値を算出する、装置。 - 前記制御部は、
前記放電期間の終点の抵抗値と前記第2抵抗の上限値との差に基づいて前記第3抵抗の抵抗値を算出する、請求項1に記載の装置。 - 前記制御部は、
前記第3抵抗の抵抗値を第2基準値と比較して、前記二次電池の出力性能を判断する、請求項1または2に記載の装置。 - 前記二次電池の電圧を測定して前記制御部に伝達する電圧センサをさらに含む、請求項1から3のいずれか一項に記載の装置。
- 二次電池を所定の基準電圧で定電圧放電させる放電器と、
前記二次電池が放電される放電期間に前記二次電池から出力される放電電流を測定する電流センサと、
前記基準電圧および時間経過による前記放電電流の変化に基づいて前記放電期間のSOC(State of Charge)変化による抵抗変化の関係を算出する制御部とを含み、
前記制御部は、
前記放電期間のSOC変化による抵抗変化の関係に基づいて、前記二次電池の電圧降下による抵抗である第1抵抗、前記放電期間に前記二次電池の活物質内にイオンが挿入されることによって発生する抵抗である第2抵抗、前記二次電池においてイオンの移動によって発生する分極抵抗である第3抵抗それぞれの抵抗値を算出し、
前記制御部は、
前記放電期間のSOC変化による抵抗変化の関係において、
前記放電期間の始点の抵抗値を前記第1抵抗に対する抵抗値とし、
前記放電期間の始点の抵抗値に対応する第1ポイントと、前記SOC変化に対する前記抵抗変化の関係における前記SOC変化に対する前記抵抗変化の比率が第1基準値を超える第2ポイントとを結ぶ延長線において、前記放電期間で抵抗値を前記第2抵抗の上限値として算出し、
前記第2抵抗の上限値と前記第1抵抗の抵抗値との差に基づいて前記第2抵抗の抵抗値を算出する、システム。 - 前記制御部は、
前記放電期間の終点の抵抗値と前記第2抵抗の上限値との差に基づいて前記第3抵抗の抵抗値を算出する、請求項5に記載のシステム。 - 前記放電器は、
前記制御部の制御で前記二次電池を所定の定電流で放電させて、前記基準電圧に対応するように前記二次電池の電圧を低くする、請求項5または6に記載のシステム。 - 二次電池が所定の基準電圧で定電圧放電されるように制御する段階と、
前記二次電池が放電される放電期間に前記二次電池から出力される放電電流の測定値を受信する段階と、
前記基準電圧および時間経過による前記放電電流の変化に基づいて前記放電期間のSOC(State of Charge)変化による抵抗変化の関係を算出する段階と、
前記放電期間のSOC変化による抵抗変化の関係に基づいて、前記二次電池の電圧降下による抵抗である第1抵抗、前記放電期間に前記二次電池の活物質内にイオンが挿入されることによって発生する抵抗である第2抵抗、前記二次電池においてイオンの移動によって発生する分極抵抗である第3抵抗それぞれの抵抗値を算出する抵抗値算出段階とを含み、
前記抵抗値算出段階は、
前記放電期間の始点の抵抗値を前記第1抵抗に対する抵抗値として算出する段階と、
前記放電期間の始点の抵抗値に対応する第1ポイントと、前記SOC変化に対する前記抵抗変化の関係における前記SOC変化に対する前記抵抗変化の比率が第1基準値を超える第2ポイントとを結ぶ延長線において、前記放電期間の終点での抵抗値を前記第2抵抗の上限値として算出し、前記第2抵抗の上限値と前記第1抵抗の抵抗値との差に基づいて前記第2抵抗の抵抗値を算出する段階と、
前記放電期間の終点の抵抗値と前記第2抵抗の上限値との差に基づいて前記第3抵抗の抵抗値を算出する段階とを含む、方法。
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KR1020200126848A KR20220043447A (ko) | 2020-09-29 | 2020-09-29 | 이차전지 성능 추정 장치, 시스템 및 그 방법 |
KR10-2020-0126848 | 2020-09-29 | ||
PCT/KR2021/009685 WO2022071651A1 (ko) | 2020-09-29 | 2021-07-27 | 이차전지 성능 추정 장치, 시스템 및 그 방법 |
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JP2004134129A (ja) | 2002-10-08 | 2004-04-30 | Honda Motor Co Ltd | 蓄電池の充放電制御装置 |
JP2007179968A (ja) | 2005-12-28 | 2007-07-12 | Auto Network Gijutsu Kenkyusho:Kk | バッテリ状態管理装置 |
JP2014149280A (ja) | 2013-02-04 | 2014-08-21 | Toshiba Corp | 電池性能推定方法および電池性能推定装置 |
WO2016129260A1 (ja) | 2015-02-12 | 2016-08-18 | パナソニックIpマネジメント株式会社 | バッテリ種別判定装置およびバッテリ種別判定方法 |
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KR20070020322A (ko) * | 2003-06-23 | 2007-02-20 | 야자키 소교 가부시키가이샤 | 배터리의 열화 판정 방법 및 장치 |
JP5496612B2 (ja) * | 2009-11-11 | 2014-05-21 | 三洋電機株式会社 | 電池の充放電可能電流演算方法及び電源装置並びにこれを備える車両 |
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KR20220043447A (ko) | 2022-04-05 |
US20230341467A1 (en) | 2023-10-26 |
CN115485571A (zh) | 2022-12-16 |
WO2022071651A1 (ko) | 2022-04-07 |
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