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1. WO2021058864 - CONTROL OF TORQUE IN ELECTRIC LIFT TRUCKS

Publication Number WO/2021/058864
Publication Date 01.04.2021
International Application No. PCT/FI2020/050616
International Filing Date 23.09.2020
IPC
B60L 15/20 2006.01
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
B60L 15/00 2006.01
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
B60L 50/60 2019.01
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
50Electric propulsion with power supplied within the vehicle
50using propulsion power supplied by batteries or fuel cells
60using power supplied by batteries
CPC
B60L 15/00
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
B60L 15/20
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
B60L 2200/40
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2200Type of vehicles
40Working vehicles
B60L 2240/12
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2240Control parameters of input or output; Target parameters
10Vehicle control parameters
12Speed
B60L 2240/16
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2240Control parameters of input or output; Target parameters
10Vehicle control parameters
14Acceleration
16longitudinal
B60L 2240/36
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2240Control parameters of input or output; Target parameters
10Vehicle control parameters
36Temperature of vehicle components or parts
Applicants
  • MITSUBISHI LOGISNEXT EUROPE OY [FI]/[FI]
Inventors
  • LAAKSONEN, Janne
Agents
  • BERGGREN OY
Priority Data
2019582527.09.2019FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL OF TORQUE IN ELECTRIC LIFT TRUCKS
(FR) COMMANDE DE COUPLE DANS DES CHARIOTS ÉLÉVATEURS ÉLECTRIQUES
Abstract
(EN)
The present invention relates to a method for controlling a torque generated by at least one electric motor (130) of an electric lift truck (100), the method comprises: detecting (210) a fulfilment of at least one criterion when the torque of the at least one electric motor (130) is in a first mode, the fulfilment of the at least one criterion indicating insufficient amount of the torque in to maintain a motion of the electric lift truck (100), triggering (220) an electrical drive (140) of the at least one electric motor (130) to generate a control signal to generate a torque being larger than the torque of the at least one electric motor (130) in the first mode to change the torque to an increased torque mode. Some aspects relate to a control unit (150), to a computer program product and to an electric lift truck (100).
(FR)
La présente invention concerne un procédé de commande d'un couple généré par au moins un moteur électrique (130) d'un chariot élévateur électrique (100), le procédé comprenant les étapes consistant à : détecter (210) la satisfaction d'au moins un critère lorsque le couple du ou des moteurs électriques (130) est dans un premier mode, la satisfaction du ou des critères indiquant une quantité insuffisante du couple pour maintenir un mouvement du chariot élévateur électrique (100), déclencher (220) un élément d'entraînement électrique (140) du ou des moteurs électriques (130) pour générer un signal de commande pour générer un couple supérieur au couple du ou des moteurs électriques (130) dans le premier mode pour faire passer le couple à un mode de couple accru. Certains aspects concernent une unité de commande (150), un produit-programme informatique et un chariot élévateur électrique (100).
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