Provided is a battery management device capable of effectively utilizing battery performance while securing battery life. The battery management device includes: a divergence amount calculation unit 106 that calculates a divergence amount Z between a life target value or a degradation amount target value of a storage battery, which is a secondary battery, and a life prediction value or a degradation amount prediction value according to use history of the storage battery in an arbitrary period from the past to the present; and a limit value change unit 108 that changes charge/discharge limit values L 1A and L 2A for controlling degradation of the storage battery based on the divergence amount Z calculated by the divergence amount calculation unit 106. The limit value change unit 108 includes a first limit value calculation unit 1082 that calculates a first limit value set that is a combination of the charge/discharge limit values L 1A and L 2A for each of a plurality of types of control parameters that change in correlation with each other based on the divergence amount Z.
BATTERY MANAGEMENT DEVICE, BATTERY SYSTEM, AND HYBRID VEHICLE CONTROL SYSTEM
Patent
Elektronische Ressource
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