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1. EP3785973 - METHOD FOR CONTROLLING A CURRENT DISTRIBUTION, CONTROL DEVICE FOR RUNNING SAID METHOD AND CURRENT SHARING SYSTEM

Office
European Patent Office
Application Number 19210329
Application Date 20.11.2019
Publication Number 3785973
Publication Date 03.03.2021
Publication Kind A1
IPC
B60L 1/00
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
1Supplying electric power to auxiliary equipment of electrically-propelled vehicles
B60L 15/20
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
15Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
20for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
CPC
B60L 1/003
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
1Supplying electric power to auxiliary equipment of vehicles
003to auxiliary motors, e.g. for pumps, compressors
B60L 15/2045
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
15Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
20for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
2045for optimising the use of energy
B60L 2200/40
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2200Type of vehicles
40Working vehicles
B60L 2220/42
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2220Electrical machine types; Structures or applications thereof
40Electrical machine applications
42with use of more than one motor
B60L 2240/429
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2240Control parameters of input or output; Target parameters
40Drive Train control parameters
42related to electric machines
429Current
B60K 25/00
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
25Auxiliary drives
Applicants GUANGXI LIUGONG MACHINERY CO
Inventors ANSCHUTZ ANDREW
Designated States
Priority Data 2019102572 26.08.2019 CN
Title
(DE) VERFAHREN ZUR STEUERUNG EINER STROMVERTEILUNG, STEUERUNGSVORRICHTUNG ZUR AUSFÜHRUNG DES BESAGTEN VERFAHRENS UND STROMTEILUNGSSYSTEM
(EN) METHOD FOR CONTROLLING A CURRENT DISTRIBUTION, CONTROL DEVICE FOR RUNNING SAID METHOD AND CURRENT SHARING SYSTEM
(FR) PROCÉDÉ DE COMMANDE DE DISTRIBUTION DE COURANT, DISPOSITIF DE COMMANDE POUR EXÉCUTER LEDIT PROCÉDÉ ET SYSTÈME DE PARTAGE DE COURANT
Abstract
(EN)
The invention relates to a method for controlling a current distribution between multiple electric motor devices in a current sharing system of an electrically driven construction machine, the method comprising the steps of: estimating a first current demand for a first electric motor device powered by a battery system and estimating a second current demand for a second electric motor device powered by the battery system; determining an available amount of current available in the current sharing system; splitting the available amount of current into a first portion for driving the first electric motor device and a second portion for driving the second electric motor device, wherein the splitting is based on the estimations of the first current demand and the second current demand. The invention further relates to a control device which is configured to run said method and to a current sharing system for an electrically driven construction machine.