BATTERY CAPACITY ESTIMATION DEVICE, CHARGING PLAN GENERATION DEVICE, DISCHARGING PLAN GENERATION DEVICE, AND BATTERY CAPACITY ESTIMATION METHOD

• Main Authors: OKADA WATARU, NISHIKAWA TAKEO, NAGAOKA SHINGO, CHEN CHEN, IKEMOTO SATORU, NAKAI TAKUYA
• Format: Patent
• Language: English; Japanese
• Published: 28.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

To estimate battery capacity of a storage battery without acquiring information on the battery capacity from a storage battery side.SOLUTION: A battery capacity estimation device for estimating battery capacity of a storage battery includes: a characteristics information acquisition unit for acquiring charging characteristics information of the storage battery in which at least one of a charging current for charging the storage battery, a charging voltage, and charging power is associated with the battery capacity; and a capacity estimation unit for performing first charging by outputting power of a first output power value to the storage battery for a predetermined time required for estimating the battery capacity to perform estimation processing for estimating the battery capacity based on at least the first output power value.SELECTED DRAWING: Figure 1 【課題】蓄電池側から電池容量の情報を取得せずとも、蓄電池の電池容量を推定する。【解決手段】蓄電池の電池容量を推定する電池容量推定装置であって、前記蓄電池を充電する充電電流、充電電圧及び充電電力の少なくともいずれかと前記電池容量とを関連付けた前記蓄電池の充電特性情報を取得する特性情報取得部と、前記電池容量の推定に必要な所定時間にわたり第１出力電力値の電力を前記蓄電池に出力して第１充電を行い、少なくとも前記第１出力電力値に基づいて前記電池容量を推定する推定処理を行う容量推定部と、を備えたことを特徴とする電池容量推定装置。【選択図】図１