SECONDARY BATTERY CONTROL SYSTEM

• Main Authors: YAMAUCHI SHUKO, MOTOKURA KOHEI
• Format: Patent
• Language: English; Japanese
• Published: 22.06.2017
• 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

PROBLEM TO BE SOLVED: To achieve an exact estimation of a deterioration state corresponding to a use history of a secondary battery.SOLUTION: The secondary battery control system includes: a data storage part 41 acquiring and storing use history data of a battery 1, which is a secondary cell, including a current and a voltage of the battery 1 corresponding to use time of the battery 1; a data selection part 42 selecting data in a predetermined range from the use history data stored in the data storage part 41; an internal deterioration parameter calculation part 43 calculating an internal deterioration parameter corresponding to deterioration states of a capacity and an internal resistor of the battery 1 on the basis of the data selected by the data selection part 42; and a deterioration state estimation part 46 estimating a deterioration state of the battery 1 on the basis of the internal deterioration parameter calculated by the internal deterioration parameter calculation part 43.SELECTED DRAWING: Figure 3 【課題】二次電池の使用履歴に応じた劣化状態を正確に推定する。【解決手段】二次電池制御システムは、二次電池である電池１の使用時間に応じた電池１の電流および電圧を含む電池１の使用履歴データを取得して蓄積するデータ蓄積部４１と、データ蓄積部４１に蓄積された使用履歴データから所定範囲のデータを選択するデータ選択部４２と、データ選択部４２により選択されたデータに基づいて、電池１の容量および内部抵抗の劣化状態に応じた内部劣化パラメータを算出する内部劣化パラメータ算出部４３と、内部劣化パラメータ算出部４３により算出された内部劣化パラメータに基づいて、電池１の劣化状態を推定する劣化状態推定部４６と、を備える。【選択図】図３