Abstract: A secondary battery and a control section are included. An electrode of the secondary battery has a singular point at which a variation in an output voltage with respect to a capacity is singularly changed. The control section includes a detection section and a calculation setting section. The detection section changes the capacity of the secondary battery, and detects a singular point capacity which is the capacity at which the singular point appears. When the secondary battery is deteriorated, the calculation setting section calculates and sets at least one of an upper limit value and a lower limit value of the capacity by using a detection value of the singular point capacity after the deterioration so that a potential of the electrode does not deviate from a predetermined range.

Abstract: A battery control system includes a secondary battery producing gas inside thereof when being used; and a control unit that controls charging/discharging of the secondary battery. The control unit includes a capacity measuring unit that measures capacity of the secondary battery being deteriorated with the use of the same; and a stop commanding unit that stops charging/discharging of the secondary battery, when the capacity measured by the capacity measuring unit is less than or equal to a predetermined threshold.

Abstract: A battery control system including a secondary battery within which gas is generated with use, and a controller configured to control charging/discharging of the secondary battery. In the controller, a measurer is configured to measure a resistance of the secondary battery, and a stop director is configured to stop charging/discharging of the secondary battery when the resistance of the secondary battery has exceeded a predetermined resistance threshold.

Abstract: A secondary battery and a control section are included. An electrode of the secondary battery has a singular point at which a variation in an output voltage with respect to a capacity is singularly changed. The control section includes a detection section and a calculation setting section. The detection section changes the capacity of the secondary battery, and detects a singular point capacity which is the capacity at which the singular point appears. When the secondary battery is deteriorated, the calculation setting section calculates and sets at least one of an upper limit value and a lower limit value of the capacity by using a detection value of the singular point capacity after the deterioration so that a potential of the electrode does not deviate from a predetermined range.

Abstract: A battery control system including a secondary battery within which gas is generated with use, and a controller configured to control charging/discharging of the secondary battery. In the controller, a measurer is configured to measure a resistance of the secondary battery, and a stop director is configured to stop charging/discharging of the secondary battery when the resistance of the secondary battery has exceeded a predetermined resistance threshold.

Abstract: A battery control system includes a secondary battery producing gas inside thereof when being used; and a control unit that controls charging/discharging of the secondary battery. The control unit includes a capacity measuring unit that measures capacity of the secondary battery being deteriorated with the use of the same; and a stop commanding unit that stops charging/discharging of the secondary battery, when the capacity measured by the capacity measuring unit is less than or equal to a predetermined threshold.

Abstract: In a charging apparatus, a lithium rechargeable battery includes positive and negative electrodes containing active materials that allow absorption and discharge of lithium ions, and an electrolyte. The lithium rechargeable battery contains, in at least one of the electrolyte and the positive electrode, an oxidizable agent which is oxidizable by the positive electrode and which has an oxidation potential greater than a nominal voltage of the lithium rechargeable battery and less than a decomposition potential of the electrolyte. The charging apparatus includes a battery capacity recovering unit that charges the lithium rechargeable battery at a potential equal to or greater than the oxidation potential of the oxidizable agent in a part of a plurality of number of times of charging and discharging cycles.