JP2023016707A - 蓄電池の容量損失を算定する方法、装置およびコンピュータプログラム製品 - Google Patents
蓄電池の容量損失を算定する方法、装置およびコンピュータプログラム製品 Download PDFInfo
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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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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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
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
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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]
- G01R31/3644—Constructional arrangements
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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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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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]
- G01R31/382—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
- G01R31/386—Arrangements for measuring battery or accumulator variables using test-loads
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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]
- G01R31/396—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
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Abstract
Description
Claims (15)
- 蓄電池(2)の少なくとも1つの平均容量損失を算出する方法であって、
複数の負荷サイクル(100)を用いて前記蓄電池(2)の一連の測定の結果を提供するステップであって、前記負荷サイクル(100)が充電フェーズと放電フェーズを含み、前記結果が電流測定値を含む、ステップと、
第1および第2の計算規則により前記一連の測定の前記結果から前記蓄電池(2)の第1および第2の放電容量(Q0,i、Qmeas,i)を算出するステップであって、前記電流測定値の較正が前記第1および第2の計算規則に別々に含まれ、前記較正が前記電流測定値の算出するための計算規則である、ステップと、
前記電流測定値の前記較正により求められた前記第1および第2の放電容量(Q0,i,、Qmeas,i)の最大の一致が得られるように、最適化プロセスを実行するステップと、
を含む方法。 - 負荷サイクル(100)の前記第1の放電容量(Q0,i)が、前記負荷サイクル(100)の放電ドリフトと前記負荷サイクル(100)のクーロン効率から計算される、請求項1に記載の方法。
- 負荷サイクル(100)の前記第1の放電容量(Q0,i)が、前記負荷サイクル(100)の前記充電フェーズの後の容量値と、前記負荷サイクル(100)の前記充電フェーズの前の容量値とから計算される、請求項1に記載の方法。
- 負荷サイクルの前記第2の放電容量(Qmeas,i)が、先行する別の負荷サイクルに対する第1の放電容量と、前記負荷サイクルと別の負荷サイクルとの間にある負荷サイクルの容量損失の合計から算出される、請求項1から3のいずれか1項に記載の方法。
- 前記較正の計算と最適化のため、電流0Aにおける実電流値と測定電流値との差を示すオフセット値を用い、実電流と測定電流との比例係数を示す勾配値を用いる、請求項1から4のいずれか1項に記載の方法。
- 前記較正の計算および最適化のために、実電流と測定電流との間の非線形、特に二次関係を示す曲率係数を使用する、請求項1から4のいずれか1項に記載の方法。
- 前記較正の計算および最適化のために、実電流と測定電流との関係を、セクション内で線形でありかつ少なくとも3つの支持点を有する関係としてモデル化する、請求項1から4のいずれか1項に記載の方法。
- 前記一連の測定の前記結果を高精度クーロメトリ装置(4)によって生成する、請求項1から7のいずれか1項に記載の方法。
- 前記負荷サイクル(100)の充電および放電を、前記蓄電池(2)の下位電圧(26)と上位電圧(25)との間で行う、請求項1から8のいずれか1項に記載の方法。
- 連続する各負荷サイクル(100)において、前記負荷サイクル内に一定の温度が存在する、請求項1から9のいずれか1項に記載の方法。
- 第1の電荷シフトを第1の上側電荷状態(24)と第2の上側電荷状態(22)との差として算出し、第2の電荷シフトを第1の下側電荷状態(23)と第2の下側電荷状態(21)との差として算出し、前記第1の電荷シフトと前記第2の電荷シフトとの差からの容量損失を算定する、請求項1から10のいずれか1項に記載の方法。
- 2つ以上の連続した負荷サイクル(100)において、前記容量損失がほぼ一定になるまで前記負荷サイクル(100)を実行する、請求項1から11のいずれか1項に記載の方法。
- 計算ユニット(10)によるコンピュータ支援で実施する、請求項1から12のいずれか1項に記載の方法。
- 複数の負荷サイクル(100)を備えた蓄電池(2)の一連の測定の結果を記憶するメモリであって、前記負荷サイクル(100)は充電フェーズと放電フェーズを含み、前記結果が電流測定値を含む、メモリと、
計算ユニット(10)と、
を備え、
前記計算ユニット(10)が、
前記蓄電池(2)の第1および第2の放電容量(Q0、i、Qmeas、i)を前記一連の測定の前記結果から第1および第2の計算規則により算出するように設計されており、前記電流測定値の較正が前記第1および第2の計算規則に別々に加わるようにし、前記較正が前記電流測定値を算出するための計算規則であり、
前記算定された第1および第2の放電容量(Q0、i、Qmeas、i)の最大の一致が達成される前記電流測定値の較正がなされるように最適化プロセスを実行する、
ように構成されている、
ことを特徴とする請求項1から13のいずれか1項に記載の方法を実施するための装置(1)。 - プログラミング可能な計算ユニット(10)のメモリに直接ロード可能なコンピュータプログラム製品であって、前記計算ユニット(10)で実行されるときに、請求項1から13のいずれか1項に記載の方法を実行するためのプログラムコード手段を備える、コンピュータプログラム製品(13)。
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EP21187494 | 2021-07-23 | ||
EP21187494.6A EP4123320B1 (de) | 2021-07-23 | 2021-07-23 | Verfahren zum bestimmen eines kapazitätsverlusts eines batteriespeichers, vorrichtung und computerprogrammprodukt |
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US11946978B2 (en) | 2021-07-23 | 2024-04-02 | Siemens Aktiengesellschaft | Method, apparatus and computer program product for estimating the service life of battery storage systems |
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US11946978B2 (en) | 2021-07-23 | 2024-04-02 | Siemens Aktiengesellschaft | Method, apparatus and computer program product for estimating the service life of battery storage systems |
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