JP2013099087A - 電源装置 - Google Patents
電源装置 Download PDFInfo
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- JP2013099087A JP2013099087A JP2011239190A JP2011239190A JP2013099087A JP 2013099087 A JP2013099087 A JP 2013099087A JP 2011239190 A JP2011239190 A JP 2011239190A JP 2011239190 A JP2011239190 A JP 2011239190A JP 2013099087 A JP2013099087 A JP 2013099087A
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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
- B60L58/20—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 different nominal voltages
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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
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
- H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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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
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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
- B60L2240/549—Current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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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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- 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
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
【解決手段】電源装置1は、高圧バッテリー11から入力された直流電力を所定電圧の直流電力に変換して補機バッテリー9および電装品10へ供給するものであり、電圧変換回路2、電圧測定回路3、電流測定回路4およびマイコン5を備える。電圧変換回路2は、高圧バッテリー11から入力される直流電力の電圧変換を行う。電圧測定回路3は、電源装置1内のグランド電位と、電源装置1内のグランド電位と接地用ケーブル6を介して接続されているシャーシ8の接地点との間の電位差を示す電圧値を測定する。電流測定回路4は、負荷電流の電流値を測定する。マイコン5は、電圧測定回路3により測定された電圧値と、電流測定回路4により測定された電流値とに基づいて、電源装置1の接地状態に応じた抵抗値を算出する。
【選択図】図1
Description
Rtotal=1/{1/Rg+1/Rc1+1/(Rc2+Rs)} ・・・(1)
Rtotal=1/{1/Rc1+1/(Rc2+Rs)} ・・・(2)
2 電圧変換回路
3 電圧測定回路
4 電流測定回路
5 マイコン
6 接地用ケーブル
6a、6b プラグ
7 検出用ケーブル
8 シャーシ
9 補機バッテリー
10 電装品
11 高圧バッテリー
12a、12b シールド線
13a、13b、13c、13d、13e、13f ボルト
14a 信号出力回路
14b 情報入出力回路
15 表示回路
16 メモリ
111 ケース
121 ケース
Claims (9)
- 入力された直流電力を所定電圧の直流電力に変換して外部へ供給する電源装置であって、
前記入力された直流電力の電圧変換を行う電圧変換回路と、
前記電源装置内のグランド電位と、前記電源装置外に設けられ前記グランド電位と接地用ケーブルを介して接続されている接地点との間の電位差を示す電圧値を測定する電圧測定回路と、
前記電源装置から前記直流電力が供給される際に流れる負荷電流の電流値を測定する電流測定回路と、
前記電圧測定回路により測定された電圧値と、前記電流測定回路により測定された電流値とに基づいて、前記電源装置の接地状態に応じた抵抗値を算出する演算回路とを備えることを特徴とする電源装置。 - 請求項1に記載の電源装置において、
前記演算回路により算出された抵抗値が所定の閾値以上である場合、外部へ供給する直流電力を制限することを特徴とする電源装置。 - 請求項1または2に記載の電源装置において、
前記演算回路により算出された抵抗値が所定の閾値以上である場合、所定の信号を外部へ出力する信号出力回路をさらに備えることを特徴とする電源装置。 - 請求項3に記載された電源装置において、
前記信号出力回路により出力された前記信号に応じて所定の表示を行う表示回路をさらに備えることを特徴とする電源装置。 - 請求項1乃至4のいずれか一項に記載の電源装置において、
前記演算回路により算出された抵抗値を記憶するメモリをさらに備えることを特徴とする電源装置。 - 請求項5に記載の電源装置において、
前記メモリに記憶された抵抗値の情報を外部へ出力する情報出力回路をさらに備えることを特徴とする電源装置。 - 請求項1乃至6のいずれか一項に記載の電源装置において、
前記演算回路により算出された抵抗値と比較するための閾値の情報を外部から入力する情報入力回路と、
前記情報入力回路により入力された閾値の情報を記憶するメモリとをさらに備えることを特徴とする電源装置。 - 請求項7に記載の電源装置において、
前記演算回路により算出された抵抗値と、前記メモリに記憶された閾値とを比較することを特徴とする電源装置。 - 請求項1乃至8のいずれか一項に記載の電源装置において、
前記電圧測定回路は、前記接地点と接続されている入力線が抵抗を介して所定の電源電圧に接続されていることを特徴とする電源装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011239190A JP5629671B2 (ja) | 2011-10-31 | 2011-10-31 | 電源装置 |
PCT/JP2012/078165 WO2013065734A1 (ja) | 2011-10-31 | 2012-10-31 | 電源装置 |
DE112012004542.4T DE112012004542T5 (de) | 2011-10-31 | 2012-10-31 | Leistungsversorgungsvorrichtung |
CN201280052594.XA CN104025439B (zh) | 2011-10-31 | 2012-10-31 | 电源装置 |
US14/353,696 US10232716B2 (en) | 2011-10-31 | 2012-10-31 | Power supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011239190A JP5629671B2 (ja) | 2011-10-31 | 2011-10-31 | 電源装置 |
Publications (2)
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JP2013099087A true JP2013099087A (ja) | 2013-05-20 |
JP5629671B2 JP5629671B2 (ja) | 2014-11-26 |
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JP2011239190A Active JP5629671B2 (ja) | 2011-10-31 | 2011-10-31 | 電源装置 |
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US (1) | US10232716B2 (ja) |
JP (1) | JP5629671B2 (ja) |
CN (1) | CN104025439B (ja) |
DE (1) | DE112012004542T5 (ja) |
WO (1) | WO2013065734A1 (ja) |
Cited By (9)
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JP2014187730A (ja) * | 2013-03-21 | 2014-10-02 | Sanyo Electric Co Ltd | 電源システム |
JP2017114399A (ja) * | 2015-12-25 | 2017-06-29 | ダイハツ工業株式会社 | 高電圧保護構造 |
JP2017184494A (ja) * | 2016-03-30 | 2017-10-05 | 株式会社ケーヒン | 電圧検出装置及び給電制御装置 |
JP2019144272A (ja) * | 2019-05-20 | 2019-08-29 | テンパール工業株式会社 | 差込接続ユニット |
JPWO2019021768A1 (ja) * | 2017-07-25 | 2020-06-11 | パナソニックIpマネジメント株式会社 | アーク溶接機 |
JP2020205663A (ja) * | 2019-06-14 | 2020-12-24 | 株式会社デンソー | 電源システム |
JP2021018087A (ja) * | 2019-07-18 | 2021-02-15 | 矢崎総業株式会社 | ワイヤハーネス製造システム及びワイヤハーネス製造方法 |
JP2022517496A (ja) * | 2019-01-03 | 2022-03-09 | エルジー エナジー ソリューション リミテッド | 絶縁抵抗測定装置及び方法 |
JP7421259B2 (ja) | 2020-12-02 | 2024-01-24 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
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DE102014017571B4 (de) | 2014-11-27 | 2021-01-21 | Audi Ag | Kraftfahrzeug mit einer Steuervorrichtung für einen elektrischen Starter |
US9755518B2 (en) | 2016-02-05 | 2017-09-05 | Qualcomm Incorporated | Current measurments in switching regulators |
DE102017209445A1 (de) * | 2017-06-02 | 2018-12-06 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Überprüfung eines Massesystems |
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JP7096193B2 (ja) * | 2019-04-04 | 2022-07-05 | 矢崎総業株式会社 | 電池制御ユニット及び電池システム |
CA3137550C (en) | 2019-04-23 | 2024-05-21 | Dpm Technologies Inc. | Fault tolerant rotating electric machine |
CN110707902A (zh) * | 2019-09-23 | 2020-01-17 | 清华大学 | 一种电力电子变压器功率模块的抗扰电路 |
US11897362B2 (en) * | 2021-05-04 | 2024-02-13 | Exro Technologies Inc. | Systems and methods for individual control of a plurality of controllable units of battery cells |
US11967913B2 (en) | 2021-05-13 | 2024-04-23 | Exro Technologies Inc. | Method and apparatus to drive coils of a multiphase electric machine |
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JP2010054468A (ja) * | 2008-08-29 | 2010-03-11 | Sanyo Electric Co Ltd | 車両用の電源装置 |
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JP2022517496A (ja) * | 2019-01-03 | 2022-03-09 | エルジー エナジー ソリューション リミテッド | 絶縁抵抗測定装置及び方法 |
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JP2021018087A (ja) * | 2019-07-18 | 2021-02-15 | 矢崎総業株式会社 | ワイヤハーネス製造システム及びワイヤハーネス製造方法 |
JP7421259B2 (ja) | 2020-12-02 | 2024-01-24 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
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DE112012004542T5 (de) | 2014-08-14 |
US20150291041A1 (en) | 2015-10-15 |
CN104025439B (zh) | 2017-12-22 |
WO2013065734A1 (ja) | 2013-05-10 |
CN104025439A (zh) | 2014-09-03 |
JP5629671B2 (ja) | 2014-11-26 |
US10232716B2 (en) | 2019-03-19 |
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