A charge and discharge control device is provide. The charge and discharge control device includes a determination circuitry configured to determine an ion diffusion rate associated with electric conduction in a secondary battery, and determine a time integrated value of an overcharged amount of an active material based on the ion diffusion rate and a charge condition; an evaluation circuitry configured to evaluate the charge condition of the secondary battery based on a determination result obtained by the determination circuitry; and a charge and discharge controller configured to control state of current application and voltage application to the secondary battery at a time of charging or discharging the secondary battery based on an evaluation result obtained by the evaluation circuitry.
Charge and discharge control device, charge and discharge control method, battery pack, electronic equipment, electric vehicle, power tool and power storage system
2020-12-15
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
European Patent Office | 2015
|CHARGE/DISCHARGE CONTROL DEVICE, BATTERY PACK, VEHICLE AND CHARGE/DISCHARGE CONTROL METHOD
European Patent Office | 2021
|CHARGE/DISCHARGE CONTROL SYSTEM, BATTERY VEHICLE, AND CHARGE/DISCHARGE CONTROL METHOD
European Patent Office | 2020
|CHARGE/DISCHARGE CONTROL METHOD FOR POWER STORAGE SYSTEM AND CHARGE/DISCHARGE CONTROL DEVICE
European Patent Office | 2021
|European Patent Office | 2018
|