JP2023531680A - 放電電圧グラフ予測方法およびこれを利用したバッテリーシステム - Google Patents
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- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
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- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- 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
- G01R31/387—Determining ampere-hour charge capacity or SoC
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- G—PHYSICS
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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]
- G01R31/396—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
- H01M10/48—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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or 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
- H02J7/0047—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]
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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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
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
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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
- 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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- 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
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- 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
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- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims (10)
- バッテリーセルに対する定電流放電グラフ予測方法において、
第1定電流の放電によりバッテリーセル電圧が第1放電限界電圧まで減少するのにかかる第1時間を測定する段階;
第2定電流の放電により前記バッテリーセル電圧が第2放電限界電圧まで減少するのにかかる第2時間を測定する段階;および
前記第1定電流、前記第1時間、前記第2定電流、および前記第2時間に基づいて放電時の定電流および放電時間の間の関係における比例定数および指数パラメータを算出する段階を含み、
前記第1放電限界電圧は、放電電流が0である時の放電基準電圧から前記第1定電流および前記バッテリーセルの内部抵抗による第1電圧降下を差し引いた電圧であり、前記第2放電限界電圧は、前記放電基準電圧から前記第2定電流および前記バッテリーセルの内部抵抗による第2電圧降下を差し引いた電圧である、定電流放電グラフ予測方法。 - 第3定電流で前記バッテリーセルを放電する時、前記バッテリーセルの電圧が第3放電限界電圧までかかる時間を前記比例定数および前記指数パラメータを利用して予測する段階をさらに含み、
前記第3放電限界電圧は、前記放電基準電圧から前記第3定電流および前記バッテリーセルの内部抵抗による第3電圧降下を差し引いた電圧である、請求項1に記載の定電流放電グラフ予測方法。 - 前記第1定電流、前記第2定電流、および前記第3定電流により放電開始時点の前記バッテリーセルのSOCおよびセルの温度は同一である、請求項2に記載の定電流放電グラフ予測方法。
- 前記放電基準電圧を変更する段階;
第4定電流の放電により前記バッテリーセル電圧が第4放電限界電圧まで減少するのにかかる第3時間を測定する段階;
第5定電流の放電により前記バッテリーセル電圧が第5放電限界電圧まで減少するのにかかる第4時間を測定する段階;および
前記第4定電流および前記第3時間、そして前記第5定電流および前記第4時間に基づいて放電電流および時間の間の関係における比例定数および指数パラメータを算出する段階をさらに含み、
前記第4放電限界電圧は、前記変更された放電基準電圧から前記第3定電流および前記バッテリーセルの内部抵抗による第4電圧降下を差し引いた電圧であり、前記第5放電限界電圧は、前記変更された放電基準電圧から前記第4定電流および前記バッテリーセルの内部抵抗による第5電圧降下を差し引いた電圧である、請求項2または3に記載の定電流放電グラフ予測方法。 - 第6定電流で前記バッテリーセルを放電する時、前記バッテリーセルの電圧が第6放電限界電圧までかかる時間を前記比例定数および前記指数パラメータを利用して予測する段階をさらに含み、
前記第6放電限界電圧は、前記変更された放電基準電圧から前記第6定電流および前記バッテリーセルの内部抵抗による第6電圧降下を差し引いた電圧である、請求項4に記載の定電流放電グラフ予測方法。 - 複数のバッテリーセル;および
定電流の放電時、複数のバッテリーセル電圧のそれぞれが対応する放電限界電圧まで到達するのにかかる放電時間を予測するバッテリー管理システムを含み、
前記バッテリー管理システムは、
定電流および放電時間の間の関係を定義する比例定数および指数パラメータに関する情報を保存し、
前記複数のバッテリーセルのうちの一つに対する比例定数および指数パラメータは、第1定電流の放電により前記バッテリーセル電圧が第1放電限界電圧まで減少するのにかかる第1時間を測定し、第2定電流の放電により前記バッテリーセル電圧が第2放電限界電圧まで減少するのにかかる第2時間を測定した後、前記第1定電流および前記第1時間、そして前記第2定電流および前記第2時間に基づいて算出し、
前記第1放電限界電圧は、放電電流が0である時の放電基準電圧から前記第1定電流および前記バッテリーセルの内部抵抗による第1電圧降下を差し引いた電圧であり、前記第2放電限界電圧は、前記放電基準電圧から前記第2定電流および前記バッテリーセルの内部抵抗による第2電圧降下を差し引いた電圧である、バッテリーシステム。 - 前記バッテリー管理システムは、
第3定電流で前記バッテリーセルを放電する時、前記バッテリーセルの電圧が第3放電限界電圧までかかる放電時間を前記比例定数および前記指数パラメータを利用して予測し、
前記第3放電限界電圧は、前記放電基準電圧から前記第3定電流および前記バッテリーセルの内部抵抗による第3電圧降下を差し引いた電圧である、請求項7に記載のバッテリーシステム。 - 前記第1定電流、前記第2定電流、および前記第3定電流により放電開始時点の前記バッテリーセルのSOCおよびセルの温度は同一である、請求項8に記載のバッテリーシステム。
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PCT/KR2021/019714 WO2022149770A1 (ko) | 2021-01-08 | 2021-12-23 | 방전 전압 그래프 예측 방법 및 이를 이용한 배터리 시스템 |
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EP0637754B1 (en) * | 1993-01-27 | 2002-09-25 | Seiko Epson Corporation | Battery capacity meter |
JPH08136626A (ja) * | 1994-09-16 | 1996-05-31 | Seiko Epson Corp | バッテリー残存容量計及びバッテリー残存容量の演算方法 |
DE60020821T2 (de) * | 1999-10-08 | 2006-05-11 | Yazaki Corp. | Verfahren zur berechnung der kapazität einer batterie und vorrichtung dafür |
US6529840B1 (en) * | 1999-10-26 | 2003-03-04 | Cellon France | Device for estimating the state of charge of a battery |
JP5031231B2 (ja) | 2005-12-09 | 2012-09-19 | 株式会社Nttファシリティーズ | 放電時間算出装置及び放電時間算出方法 |
KR101134894B1 (ko) * | 2006-06-28 | 2012-04-13 | 엘지전자 주식회사 | 배터리 잔량 검출과 표시를 위한 장치 및 방법 |
JP4956476B2 (ja) * | 2008-03-31 | 2012-06-20 | 古河電気工業株式会社 | バッテリの放電持続時間予測方法、バッテリ状態検知方法、バッテリ状態検知装置及びバッテリ電源システム |
TWI431835B (zh) | 2011-09-08 | 2014-03-21 | Askey Technology Jiang Su Ltd | 電池充放電管理系統及方法 |
JP2013253991A (ja) | 2012-11-30 | 2013-12-19 | Gs Yuasa Corp | 蓄電素子の劣化後容量推定装置、劣化後容量推定方法及び蓄電システム |
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