JP2019102287A - 二次電池システム - Google Patents
二次電池システム Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
Description
<二次電池システムの構成>
図1は、本実施の形態に係る二次電池システムが搭載された車両の全体構成を概略的に示す図である。図1を参照して、車両1は、ハイブリッド車両である。しかし、本開示に係る二次電池システムが搭載可能な車両はハイブリッド車両(プラグインハイブリッド車を含む)に限られない。本開示に係る二次電池システムは、二次電池システムから供給される電力を用いて駆動力を発生させる車両全般に搭載可能である。そのため、車両1は、電気自動車または燃料電池車であってもよい。
以上のように構成された二次電池システム2において、組電池10の劣化に伴い、組電池10の内部抵抗が増加する。内部抵抗増加の原因としては、いずれかの組電池10内のいずれかのセルにおいて、電極の剥離、集電体の溶接部分の剥離、電極活物質の滑落等に起因して実効電極面積が低下することなどが挙げられる。組電池10の内部抵抗の増加前と増加後とでは、以下に説明するように、組電池10内(ブロック内)を流れる電流分布に変化が生じる。
R1=R/N ・・・(1)
1/R2=(N−1)×1/R+1/αR ・・・(2)
R2=αR/{α(N−1)+1} ・・・(3)
K=R2/R1=αN/{α(N−1)+1} ・・・(4)
IX:IY=αR:{R/(N−1)} ・・・(5)
IX=α(N−1)/{α(N−1)+1)}×IB ・・・(6)
Inor=α/{α(N−1)+1)}×IB ・・・(7)
Inor=K×IB/N ・・・(8)
図4は、本実施の形態における組電池10の保護電流IBpの算出方法を示すフローチャートである。図4ならびに後述する図6および図7に示すフローチャートは、たとえば所定周期が経過する度に図示しないメインルーチンから呼び出されて実行される。各ステップ(Sと略す)は、基本的にはECU100によるソフトウェア処理によって実現されるが、ECU100内に作製された電子回路によるハードウェア処理によって実現されてもよい。
保護電流IBpの算出手法としては、図4および図5にて説明した手法以外の手法も考えられる。たとえば、以下の変形例1,2に示すような手法を採用することもできる。
図7は、本実施の形態の変形例2における組電池10の保護電流IBpの算出方法を示すフローチャートである。この変形例2では、ブロック11〜1Mの内部抵抗R1〜RM(Ri)を算出して、その中から最低抵抗Rminを算出するのに代えて、ある組電池10の状態(TB,SOC)において内部抵抗が最も低くなる理想的(あるいは仮想的)なブロックを想定して、そのブロックの内部抵抗が算出される。
組電池10としてリチウムイオン二次電池の組電池が採用される場合に、比較的大きな電流での充放電が継続的に行なわれると、組電池10の内部抵抗が増加する劣化現象である「ハイレート劣化」が生じ得る。ハイレート劣化は、電極体の内部でのリチウムイオンの濃度分布(塩濃度分布)が偏ることを1つの要因として生じる劣化である。本実施の形態において、ECU100は、組電池10のハイレート劣化の進行を抑制するための「ハイレート劣化抑制制御」を実行することが可能である。ハイレート劣化の進行には、たとえばSOCが関連することが知られている。
組電池10としてリチウムイオン二次電池の組電池が採用される場合に、組電池10の使用態様によっては、主として連続充電時には負極表面にリチウム金属が析出することによって組電池10の発熱あるいは性能低下を招くおそれがあったり、主として連続放電時には内部抵抗が増加したりするおそれがあることが知られている。本実施の形態において、ECU100は、リチウム金属の析出を抑制するための「リチウム析出抑制制御」を実行する。
Claims (1)
- 組電池と、
前記組電池に入出力される電流を検出する電流センサと、
前記組電池の電流値に従って前記組電池の保護制御を実行する制御装置とを備え、
前記組電池は、直列接続された複数のブロックを含み、
前記複数のブロックの各々は、並列接続された互いに同数のセルを含み、
前記制御装置は、
前記複数のブロックのうちの第1のブロックの内部抵抗を示す第1の内部抵抗と、前記複数のブロックのうちの第2のブロックの内部抵抗を示す第2の内部抵抗とを算出し、
前記第1および第2の内部抵抗のうちの高い方の内部抵抗を低い方の内部抵抗で除算した内部抵抗比を算出し、
算出された内部抵抗比と前記電流センサにより検出された電流値とが乗算された値を前記保護制御に使用する、二次電池システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2017232515A JP7067909B2 (ja) | 2017-12-04 | 2017-12-04 | 二次電池システム |
PCT/IB2018/001367 WO2019111045A1 (en) | 2017-12-04 | 2018-11-30 | Secondary battery system and control method for secondary battery |
US16/768,376 US11251473B2 (en) | 2017-12-04 | 2018-11-30 | Secondary battery system and control method for secondary battery |
CN201880077773.6A CN111433967B (zh) | 2017-12-04 | 2018-11-30 | 二次电池系统和用于二次电池的控制方法 |
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JP2017232515A JP7067909B2 (ja) | 2017-12-04 | 2017-12-04 | 二次電池システム |
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JP2019102287A true JP2019102287A (ja) | 2019-06-24 |
JP7067909B2 JP7067909B2 (ja) | 2022-05-16 |
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US (1) | US11251473B2 (ja) |
JP (1) | JP7067909B2 (ja) |
CN (1) | CN111433967B (ja) |
WO (1) | WO2019111045A1 (ja) |
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KR102242248B1 (ko) * | 2017-05-02 | 2021-04-20 | 주식회사 엘지화학 | 이차전지의 용접 검사장치 및 검사방법 |
EP3871919B1 (en) * | 2020-02-25 | 2022-04-06 | Samsung SDI Co., Ltd. | Method and detection unit for detecting inhomogeneous cell performance of a battery system |
US20220085634A1 (en) * | 2020-09-15 | 2022-03-17 | Panasonic Intellectual Property Management Co., Ltd. | Method of controlling secondary battery and battery system |
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US20090112496A1 (en) * | 2007-10-30 | 2009-04-30 | Sony Corporation | Battery pack, method of charging secondary battery and battery charger |
JP2017211262A (ja) * | 2016-05-25 | 2017-11-30 | トヨタ自動車株式会社 | セル断線検査方法 |
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JP4009416B2 (ja) * | 1999-10-25 | 2007-11-14 | 松下電器産業株式会社 | 組電池制御装置 |
JP4840154B2 (ja) | 2007-01-23 | 2011-12-21 | パナソニック株式会社 | 電源機器 |
JP5017084B2 (ja) * | 2007-03-09 | 2012-09-05 | 株式会社日立製作所 | 電池制御方法及びそのシステム |
GB2461350B (en) * | 2007-12-27 | 2011-03-30 | Hitachi Ltd | Battery control method and system |
CN102089956B (zh) | 2008-07-11 | 2013-06-05 | 丰田自动车株式会社 | 电池的充放电控制装置以及具备该装置的混合动力汽车 |
JP2011155829A (ja) * | 2009-12-28 | 2011-08-11 | Sanyo Electric Co Ltd | バッテリシステムおよびそれを備えた電動車両 |
JP4898982B1 (ja) * | 2010-08-31 | 2012-03-21 | パナソニック株式会社 | 電池電源装置、及び電池電源システム |
JP2014157662A (ja) * | 2013-02-14 | 2014-08-28 | Toyota Motor Corp | 電池システム |
JP6443656B2 (ja) * | 2014-07-02 | 2018-12-26 | パナソニックIpマネジメント株式会社 | 電池状態判定装置 |
US10266063B2 (en) * | 2015-03-02 | 2019-04-23 | Hitachi Automotive Systems, Ltd. | Battery controller and vehicle system |
JP2017055551A (ja) * | 2015-09-09 | 2017-03-16 | 日立オートモティブシステムズ株式会社 | 蓄電池制御装置 |
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- 2017-12-04 JP JP2017232515A patent/JP7067909B2/ja active Active
-
2018
- 2018-11-30 US US16/768,376 patent/US11251473B2/en active Active
- 2018-11-30 CN CN201880077773.6A patent/CN111433967B/zh active Active
- 2018-11-30 WO PCT/IB2018/001367 patent/WO2019111045A1/en active Application Filing
Patent Citations (3)
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US20090112496A1 (en) * | 2007-10-30 | 2009-04-30 | Sony Corporation | Battery pack, method of charging secondary battery and battery charger |
JP2009112113A (ja) * | 2007-10-30 | 2009-05-21 | Sony Corp | 電池パック、二次電池の充電方法、および充電装置 |
JP2017211262A (ja) * | 2016-05-25 | 2017-11-30 | トヨタ自動車株式会社 | セル断線検査方法 |
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US20200303787A1 (en) | 2020-09-24 |
CN111433967A (zh) | 2020-07-17 |
WO2019111045A1 (en) | 2019-06-13 |
JP7067909B2 (ja) | 2022-05-16 |
US11251473B2 (en) | 2022-02-15 |
CN111433967B (zh) | 2023-12-12 |
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