REQUIRED CHARGING TIME ESTIMATION METHOD, REQUIRED CHARGING TIME ESTIMATION DEVICE AND ELECTRIC VEHICLE

• Main Authors: TSUCHIYA FUMIAKI, SASAMOTO YUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

To provide a charging time estimation method and a charging time estimation device capable of accurately estimating a required charging time, and provide an electric vehicle comprising a function for estimating an accurate charging time.SOLUTION: A vehicle controller 4 commands a charging current value to a battery charger 7, such that a battery 61 is charged by a multistage constant current charging system. The vehicle controller 4 estimates a required time for charging the battery 61 (104). The vehicle controller 4 executes: a total capacity acquisition step (105) of acquiring total capacity of the battery 61; a current value acquisition step (107) of acquiring a charging current value in each of constant current charging steps; an achievable charging rate acquisition step (108) of acquiring an achievable charging rate that can be achieved in each of the constant current charging steps; and a step (109) of estimating a required time until completing the charging of the battery 61 on the basis of the total capacity of the battery 61, the charging current value in each of the constant current charging steps and the achievable charging rate in each of the constant current charging steps.SELECTED DRAWING: Figure 2 【課題】充電所要時間の正確な推定を可能とする充電時間推定方法および充電時間推定装置を提供する。正確な充電時間を推定する機能を備えた電動車両を提供する。【解決手段】車両コントローラ４は、充電器７に充電電流値を指令することにより、バッテリ６１を多段定電流充電方式で充電する。車両コントローラ４は、バッテリ６１を充電するための所要時間を推定する(104)。車両コントローラ４は、バッテリ６１の全体容量を取得する全体容量取得ステップ(105)と、各定電流充電ステップにおける充電電流値を取得する電流値取得ステップ(107)と、各定電流充電ステップにより到達可能な到達可能充電率を取得する到達可能充電率取得ステップ(108)と、バッテリ６１の全体容量、各定電流充電ステップにおける充電電流値、および各定電流充電ステップの到達可能充電率に基づいて、バッテリ６１の充電完了までの所要時間を推定するステップ(109)とを実行する。【選択図】図２