SECONDARY BATTERY MODULE

• Main Authors: KAMATA TAKAMITSU, OKAWA KEIICHIRO, KAYANO HIROSHI, SOMA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.04.2018
• 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 provide a deterioration prediction method and deterioration prediction device that take into consideration variations for each battery.SOLUTION: A secondary battery module according to the present invention includes: a secondary battery; a current measurement unit that measures a current of the secondary battery; a temperature measurement unit that measures a temperature of the secondary battery; a timer that clocks a time; and a calculation unit that calculates an integration amount of a current time of the secondary battery and a use SOC range from the measured current and the time clocked by the timer. In the secondary battery module, the calculation unit calculates an integration amount of a current time within a first temperature range and second temperature range in a prescribed SOC range, converts the integration amount of the current time within the first temperature range into an integration amount of a current time within the second temperature range, and calculates a total deterioration rate using a value obtained by summing up the integration amount of the current time within the second temperature range and the converted integration amount of the current time.SELECTED DRAWING: Figure 9 【課題】電池毎のばらつきも考慮した劣化予測方法及び劣化予測装置を提供することを課題とする。【解決手段】本発明における二次電池モジュールは、二次電池と、前記二次電池の電流を測定する電流測定部と、前記二次電池の温度を測定する温度測定部と、時間を測定するタイマーと、前記測定された電流及び前記タイマーによる前記時間から前記二次電池の電流時間積算量及び使用ＳＯＣ範囲を算出する演算部と、を有する二次電池モジュールにおいて、前記演算部は、所定ＳＯＣ範囲における第一の温度範囲及び第二の温度範囲での電流時間積算量を算出し、前記第一の温度範囲における電流時間積算量を第二の温度範囲における電流時間積算量に変換し、前記第二の温度範囲における電流時間積算量と前記変換された電流時間積算量とを合算した値を用いて総劣化率を算出する。【選択図】図９