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1. WO2019163112 - WORK VEHICLE POWER REGENERATION SYSTEM

Publication Number WO/2019/163112
Publication Date 29.08.2019
International Application No. PCT/JP2018/006828
International Filing Date 23.02.2018
IPC
B60L 7/14 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION 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
7Electrodynamic brake systems for vehicles in general
10Dynamic electric regenerative braking
14for vehicles propelled by ac motors
CPC
B60K 6/46
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
6Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
20the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
42characterised by the architecture of the hybrid electric vehicle
46Series type
B60L 1/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
1Supplying electric power to auxiliary equipment of vehicles
B60L 7/12
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
7Electrodynamic brake systems for vehicles in general
10Dynamic electric regenerative braking
12for vehicles propelled by dc motors
B60L 7/16
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
7Electrodynamic brake systems for vehicles in general
10Dynamic electric regenerative braking
16for vehicles comprising converters between the power source and the motor
B60W 20/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
20Control systems specially adapted for hybrid vehicles
B60W 2050/0026
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
50Details of control systems for road vehicle drive control not related to the control of a particular sub-unit ; , e.g. process diagnostic or vehicle driver interfaces
0001Details of the control system
0019Control system elements or transfer functions
0026Lookup tables or parameter maps
Applicants
  • 日立建機株式会社 HITACHI CONSTRUCTION MACHINERY CO., LTD. [JP]/[JP]
Inventors
  • 福田 直紀 FUKUDA Naoki
  • 荒井 雅嗣 ARAI Masatsugu
  • 清水 幸昭 SHIMIZU Yukiaki
  • 田中 貴照 TANAKA Takaaki
  • 田中 信太朗 TANAKA Shintarou
Agents
  • 特許業務法人 武和国際特許事務所 THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WORK VEHICLE POWER REGENERATION SYSTEM
(FR) SYSTÈME DE RÉGÉNÉRATION DE PUISSANCE D'ENGIN DE CHANTIER
(JA) 作業車両の電力回生システム
Abstract
(EN)
Provided is a work vehicle power regeneration system capable of effectively using regenerated electric energy. The work vehicle power regeneration system is provided with: a first electric circuit (C1) for supplying power generated by a first generator (12) to travel motors (10L, 10R); a voltage detector (55) for detecting an actual voltage of the first electric circuit; a second electric circuit (C2) for supplying power generated by a second generator (13) to an auxiliary device (19); a step-down device (60) having a high voltage side connected to the first electric circuit and a low voltage side connected to the second electric circuit; and a controller (49) for controlling the drive of the step-down device. The controller estimates, on the basis of information about the travel state of a work vehicle and the actual voltage detected by the voltage detector, the voltage of the first electric circuit after the elapse of a predetermined time from the present time point, and outputs a drive command to the step-down device if the voltage estimated by a voltage estimation unit is greater than or equal to a threshold value.
(FR)
La présente invention concerne un système de régénération de puissance d'engin de chantier capable d'utiliser efficacement de l'énergie électrique régénérée. Le système de régénération de puissance d'engin de chantier comprend : un premier circuit électrique (C1) pour fournir de l'énergie générée par un premier générateur (12) à des moteurs de déplacement (10L, 10R) ; un détecteur de tension (55) pour détecter une tension réelle du premier circuit électrique ; un second circuit électrique (C2) pour fournir de l'énergie générée par un second générateur (13) à un dispositif auxiliaire (19) ; un dispositif abaisseur (60) ayant un côté haute tension raccordé au premier circuit électrique et un côté basse tension raccordé au second circuit électrique ; et un dispositif de commande (49) pour commander l'entraînement du dispositif abaisseur. Le dispositif de commande estime, sur la base d'informations concernant l'état de déplacement d'un engin de chantier et de la tension réelle détectée par le détecteur de tension, la tension du premier circuit électrique après l'écoulement d'un temps prédéfini à partir du moment actuel, et fournit une commande d'entraînement au dispositif abaisseur si la tension estimée par une unité d'estimation de tension est supérieure ou égale à une valeur seuil.
(JA)
回生された電気エネルギを有効に利用できる作業車両の電力回生システムを提供する。 第1発電機(12)にて発電され、走行モータ(10L、10R)に電力を供給するための第1電気回路(C1)と、第1電気回路の実電圧を検出する電圧検出器(55)と、第2発電機(13)にて発電され、補機(19)に電力を供給するための第2電気回路(C2)と、高圧側が第1電気回路と接続され、低圧側が第2電気回路と接続された降圧装置(60)と、降圧装置の駆動を制御するコントローラ(49)と、を備え、コントローラは、作業車両の走行状態に関する情報および電圧検出器にて検出された実電圧に基づいて、現時点から所定時間経過後における第1電気回路の電圧を推定し、電圧推定部にて推定された電圧が閾値以上である場合に、降圧装置に駆動指令を出力する。
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