Control device and control method for non-aqueous secondary battery

• Main Authors: OMAE HIROKI, NAKASHIMA MAKOTO, OBATA HIROYUKI
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2014
• 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 prevent the discharging of a non-aqueous secondary battery from being excessively limited. [Solution] This control device controls the discharging of a non-aqueous secondary battery such that the discharge power of the non-aqueous secondary battery does not exceed an upper limit value, the control device comprising a current sensor and a controller. The controller calculates an evaluation value for evaluating a first degradation component from the discharge state detected by using the current sensor. The first degradation component is a component that reduces the output performance of the non-aqueous secondary battery in association with a deviation in ion concentration in the electrolyte caused by the discharging of the non-aqueous secondary battery. The controller calculates a second integrated value by integrating: a value found by reducing, by a correction coefficient, a first integrated value found by integrating past evaluation values that have exceeded a target value; and the present evalu