JP2018011454A - 電池監視システム - Google Patents
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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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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- 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
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- H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
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- H—ELECTRICITY
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- 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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- 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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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
Description
以下、「電池監視システム」を車載主機として回転電機を備える車両(例えば、ハイブリッド車や電気自動車)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。
第2実施形態の電気的構成は、図1,2に示した第1実施形態の構成と同一である。第2実施形態における「第2取得部」としての電池制御装置50は、電圧検出と同期して充放電電流Iの検出値を取得する同期周期より短い所定周期毎に充放電電流Iの検出値を取得することで、同期周期中の複数の時点において充放電電流Iの検出値を取得する。
第3実施形態における「第2取得部」としての電池制御装置50は、第2実施形態と同様に、電圧検出と同期して充放電電流Iの検出値を取得する同期周期より短い所定周期毎に充放電電流Iの検出値を取得することで、同期周期中の複数の時点において充放電電流Iの検出値を取得する。
第4実施形態の電気的構成は、図1,2に示した第1実施形態の構成と同一である。「第1装置」としての電池制御装置50は、「第2装置」としてのインバータ制御装置60と、所定の通信周期で通信を行う。
・「平均値算出部」としての機能を電池制御装置50が備える構成としてもよい。即ち、電池制御装置50は、同期周期中の複数の時点において取得された電流センサ41による充放電電流Iの検出値に基づいて、充放電電流Iの平均値を算出してもよい。そして、電池制御装置50は、算出した充放電電流Iの平均値をインバータ制御装置60に送信するとよい。本変形例での構成では、電池制御装置50における処理が増加する一方で、インバータ制御装置60における処理を低減するとともに、電池制御装置50からインバータ制御装置60に送信する情報を低減することができる。
Claims (8)
- 蓄電池を監視する電池監視システムであって、
前記蓄電池の端子間電圧を検出する電圧検出部(42)と、
前記蓄電池に流れる充放電電流を検出する電流検出部(41)と、
所定の同期周期毎に、前記電圧検出部による前記端子間電圧の検出値と、前記電流検出部による前記充放電電流の検出値とを対応付けて取得する第1取得部(50)と、
前記第1取得部により対応付けて取得された前記端子間電圧の検出値、及び前記充放電電流の検出値に基づいて、前記蓄電池を制御する電池制御部(50)と、
前記同期周期中の複数の時点において、前記電流検出部による前記充放電電流の検出値を取得する第2取得部(50)と、
前記第2取得部が前記複数の時点で取得した前記充放電電流の検出値について、その平均値を算出する平均値算出部(50,60)と、を備える電池監視システム。 - 前記電圧検出部は、フライングキャパシタ方式の電圧検出を実施する請求項1に記載の電池監視システム。
- 前記第2取得部は、前記第1取得部が前記充放電電流の検出値を取得する時点、及び、その時点から前記同期周期より短い期間であって逐次異なる長さの期間が経過した時点において、前記充放電電流の検出値を取得する請求項1又は2に記載の電池監視システム。
- 前記電池制御部は、前記同期周期毎に前記蓄電池を制御するための所定処理を行うものであり、その所定処理は、前記第1取得部が前記充放電電流の検出値を取得する時点から前記同期周期より短い期間であって前記所定処理の実行状態に応じて変化する時点で終了するものであって、
前記第2取得部は、前記第1取得部が前記充放電電流の検出値を取得する時点、及び、前記所定処理が終了する時点において、前記充放電電流の検出値を取得する請求項3に記載の電池監視システム。 - 前記第2取得部は、前記同期周期より短い所定周期毎に前記充放電電流の検出値を取得することで、前記同期周期中の複数の時点において前記充放電電流の検出値を取得する請求項1又は2に記載の電池監視システム。
- 前記第2取得部は、前記充放電電流に所定のリプルが生じていることを条件として、前記所定周期を短い方向に変化させる請求項5に記載の電池監視システム。
- 前記第1取得部、前記第2取得部、及び、前記電池制御部を有する第1装置と、
前記平均値算出部を有し、前記第1装置とは異なる第2装置と、を備え、
前記第1装置は、前記第2装置に対し、前記第2取得部の取得した前記充放電電流の検出値を所定の通信周期で送信する送信部(50)を有し、
前記第2取得部は、前記通信周期中の複数の時点において、前記電流検出部による前記充放電電流の検出値を取得するものであって、
前記送信部は、前記通信周期毎に、前記第2取得部が前記複数の時点で取得した前記充放電電流の検出値を前記第2装置に対して送信する請求項1乃至6のいずれか1項に記載の電池監視システム。 - 蓄電池を監視する電池監視システムであって、
前記蓄電池の端子間電圧を検出する電圧検出部(42)と、
前記蓄電池に流れる充放電電流を検出する電流検出部(41)と、
所定の通信周期で通信を行う第1装置(50)及び第2装置(60)と、を備え、
前記第1装置は、
所定の同期周期毎に、前記電圧検出部による前記端子間電圧の検出値と、前記電流検出部による前記充放電電流の検出値とを対応付けて取得する第1取得部と、
前記第1取得部により対応付けて取得された前記端子間電圧の検出値、及び前記充放電電流の検出値に基づいて、前記蓄電池を制御する電池制御部と、
前記通信周期中の複数の時点において、前記電流検出部による前記充放電電流の検出値を取得する第2取得部と、
前記通信周期毎に、前記第2装置に対し、前記第2取得部の取得した複数の前記充放電電流の検出値を送信する送信部と、を備え、
前記第2装置は、前記送信部から受信した複数の前記充放電電流の検出値について、その平均値を算出する平均値算出部を備える電池監視システム。
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Cited By (4)
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JP2020053176A (ja) * | 2018-09-25 | 2020-04-02 | 株式会社デンソー | 電池監視システム |
CN111355435A (zh) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | 电机控制电路、车辆及其加热方法 |
CN111355433A (zh) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | 电机控制电路、车辆及其加热方法 |
JP2021162552A (ja) * | 2020-04-03 | 2021-10-11 | 株式会社Gsユアサ | 蓄電素子の管理装置、蓄電素子の計測方法、及び蓄電装置 |
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CN110521078B (zh) * | 2017-02-08 | 2023-09-22 | 循环充电控股有限公司 | 电池系统 |
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IT202000025441A1 (it) | 2020-10-28 | 2021-01-28 | Nesyt Spin Off S R L | Alimentatore intelligente per batterie |
CN114506244B (zh) * | 2022-01-28 | 2023-05-23 | 重庆长安新能源汽车科技有限公司 | 一种电动汽车充电剩余时间的估算方法及估算系统 |
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US10429446B2 (en) | 2019-10-01 |
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