REMAINING BATTERY CHARGING TIME ESTIMATION METHOD AND APPARATUS

• Main Authors: NIU, Wei, XU, Haihua, LI, Jintao, ZHAO, Weihong, TIAN, Hao, HU, Zhengnan, JU, Jingchen, GUAN, Bicong, NIU, Yaqi, DENG, Zhongqing, WU, Xuejian
• Format: Patent
• Language: English; French; German
• Published: 08.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL

Disclosed are a remaining battery charging time estimation method and apparatus. The method comprises: determining charge intervals (S102); estimating non end-of-charge charging times; estimating an end-of-charge time according to multiple stored historical end-of-charge times (S106); summing an early-charge time, a mid-charge time, a late-charge time, and the end-of-charge time to obtain a theoretical remaining charging time and displaying timing (S108); during a charging process, repeatedly performing the described steps S102-S108 at intervals of a preset time period, and correcting a displayed remaining charging time displayed in a current period according to the theoretical remaining charging time determined in the current period (S110); and when a current battery charge amount reaches a starting end of end-of-charge, using the end-of charge time as the displayed remaining charging time, and displaying a countdown until the battery charge amount reaches a target charge amount (S112). Accuracy of the estimated remaining charging time is improved by correcting a displayed battery initial remaining charging time by means of determining a battery theoretical remaining charging time in real time.