Patent ID: 8896269
Filing Date: 2014-11-25
Classification: G06F,H01M,H02J,Y02E

Abstract:
1. A battery management device for managing a rechargeable battery in a portable computer, the portable computer having a charge circuit for charging the rechargeable battery, the battery management device comprises: a discharge circuit for discharging the rechargeable battery; an acquiring module configured to acquire a mode determining parameter; a first determining module configured to determine whether a battery storage mode is entered according to the mode determining parameter; a first control module configured to control the charge circuit or the discharge circuit, thereby controlling the amount of electrical charge in the rechargeable battery that is in the battery storage mode such that the amount of electrical charge in the rechargeable battery is lower than a second amount of electrical charge threshold, wherein the performance of the rechargeable battery when being stored with an amount of electrical charge that is lower than the second amount of electrical charge threshold is better relative to the performance when being stored with an amount of electrical charge that is higher than the second amount of electrical charge threshold; wherein the mode determining parameter comprises the amount of electrical charge in the rechargeable battery and a current usage state of an external power supply, the first determining module configured to determine that the battery storage mode is entered when the period during which the amount of electrical charge of the battery is higher than a first amount of electrical charge threshold that exceeds a first time threshold and meanwhile the portable computer currently uses the external power supply, and determine that the battery storage mode is not entered when the period during which the amount of electric charge of the battery is higher than the first amount of electric charge threshold exceeds a first time threshold and the portable computer does not currently use the external power supply, the second amount of electrical charge threshold that is less than the first amount of electrical charge threshold; wherein the current usage state of the external power supply is an actual current usage state of the external power supply and is not predicted.