JP7094345B2 - 二次電池の劣化判定システム及び劣化判定方法 - Google Patents
二次電池の劣化判定システム及び劣化判定方法 Download PDFInfo
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- strain gauges
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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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- 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
-
- 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
- H02J7/005—Detection of state of health [SOH]
-
- 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
- H01M10/44—Methods for charging or discharging
- H01M10/445—Methods for charging or discharging in response to gas pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Description
2 リチウムイオン電池(二次電池)
3 充電装置
4 制御装置
5A~5D ひずみゲージ(圧力検出部)
21 筐体
22 正極端子
23 負極端子
24 主面
24A~24D 角部
41 充電制御部
42 劣化判定部
ステップS01 圧力検出ステップ
ステップS02 劣化判定ステップ
S1~S4 測定値
G 膨張最大位置
L1 x軸方向の辺の長さ
L2 y軸方向の辺の長さ
Claims (6)
- 二次電池の表面の略矩形状の主面に取り付けられ、取付位置の電池表面の圧力を検出する4つのひずみゲージと、
前記4つのひずみゲージの測定値に基づいて、前記二次電池の劣化を判定する劣化判定部と、
を備え、
前記劣化判定部は、前記二次電池の表面のうち、前記4つのひずみゲージにより区画される領域の中で、体積膨張が最大となる膨張最大位置を推定する、
二次電池の劣化判定システム。 - 前記二次電池の前記表面のうちの一面に4つの前記ひずみゲージが配置され、
前記劣化判定部は、
前記一面の中央位置を原点とし、前記4つのひずみゲージのそれぞれが各象限に配置されるように二次元座標系を設定し、
前記ひずみゲージのうち、前記二次元座標系のx軸の正側に配置される2つの前記ひずみゲージの測定値の和と、前記二次元座標系のx軸の負側に配置される2つの前記ひずみゲージの測定値の和との差分を計算し、該差分に応じて前記中央位置からのx軸方向のズレ量を算出し、
前記ひずみゲージのうち、前記二次元座標系のy軸の正側に配置される2つの前記ひずみゲージの測定値の和と、前記二次元座標系のy軸の負側に配置される2つの前記ひずみゲージの測定値の和との差分を計算し、該差分に応じて前記中央位置からのy軸方向のズレ量を算出し、
前記x軸方向のズレ量、及び、前記y軸方向のズレ量に基づいて、前記膨張最大位置の座標を算出する、
請求項1に記載の二次電池の劣化判定システム。 - 前記二次電池はリチウムイオン電池である、
請求項1または2に記載の二次電池の劣化判定システム。 - 前記4つのひずみゲージのそれぞれの中間位置にさらにひずみゲージを備える、
請求項1~3のいずれか1項に記載の二次電池の劣化判定システム。 - 前記二次電池の充電を制御する充電制御部をさらに備え、
前記充電制御部は、前記劣化判定部により推定された前記膨張最大位置に基づいて充電制御を行う、
請求項1~4のいずれか1項に記載の二次電池の劣化判定システム。 - 二次電池の表面の略矩形状の主面に取り付けられた4つのひずみゲージにより、取付位置の電池表面の圧力を検出する圧力検出ステップと、
前記4つのひずみゲージの測定値に基づいて、前記二次電池の劣化を判定する劣化判定ステップと、を含み、
前記劣化判定ステップでは、前記二次電池の表面のうち、前記4つのひずみゲージにより区画される領域の中で、体積膨張が最大となる膨張最大位置が推定される、
二次電池の劣化判定方法。
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JP2013020826A (ja) | 2011-07-12 | 2013-01-31 | Toyota Motor Corp | 組電池の状態検出装置 |
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JP2010032492A (ja) | 2008-07-02 | 2010-02-12 | Toyota Motor Corp | 圧力測定装置及び厚み測定装置 |
JP2013020826A (ja) | 2011-07-12 | 2013-01-31 | Toyota Motor Corp | 組電池の状態検出装置 |
JP2015521347A (ja) | 2012-05-14 | 2015-07-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | ガルバニ素子のためのカバーフィルム、電気化学的蓄電装置、電気化学的蓄電装置システム、ガルバニ素子のカバーのためのフレキシブルフィルム、及び、電気化学的蓄電装置の状態パラメータを算出するための方法 |
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EP3817127A1 (en) | 2021-05-05 |
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