Abstract: In a rechargeable battery set, an average voltage is computed from average voltage drop produced by the sum of internal resistances of each battery cell. A calculated internal resistance of each battery cell is then computed from a measured voltage of each battery cell and the average voltage. Finally, the measured voltage of each battery cell is calibrated according to the calculated internal resistance and a calibrated voltage of each battery cell may be computed. In such way, the calibrated voltage of each battery cell is much closer to a real voltage of the battery cell, which provides a battery control unit more precise information when charging/discharging the battery cells.

Abstract: By analyzing consecutive timestamps at which the battery cell is fully charged in two or more previous time intervals, the charging control method utilizes these consecutive timestamps of a sub-section of each time interval as a charging control way to the rechargeable battery in a present time interval. The charging process of the rechargeable battery in corresponding timestamps of the present time interval is limited to a specific proportion of the fully charged capacity of the battery cells. In such way, the rechargeable battery may have fewer chances to be fully charged at some less used time, which substantially increases the life of the battery.

Abstract: A power consumption reduction method controls a rechargeable battery to enter a sleep mode after the electronic system is shutdown with the output current of the rechargeable battery falling under a first current value or the rechargeable battery is in a non-communication status for over a first delay time. When in the sleep mode, a control unit further controls the rechargeable battery to enter a power saving mode when the output voltage of the rechargeable battery falls under a predefined voltage or the RSOC of the rechargeable battery is lower than a percentage of FCC, and the output current of the rechargeable battery falls under a second current value or the rechargeable battery is in the non-communication status for over a second delay time. The method shuts down all power-consuming circuits and components under long-time idling of the battery, capable of preventing overly discharging and malfunction of the rechargeable battery.

Abstract: A power consumption reduction method controls a rechargeable battery to enter a sleep mode after the electronic system is shutdown with the output current of the rechargeable battery falling under a first current value or the rechargeable battery is in a non-communication status for over a first delay time. When in the sleep mode, a control unit further controls the rechargeable battery to enter a power saving mode when the output voltage of the rechargeable battery falls under a predefined voltage or the RSOC of the rechargeable battery is lower than a percentage of FCC, and the output current of the rechargeable battery falls under a second current value or the rechargeable battery is in the non-communication status for over a second delay time. The method shuts down all power-consuming circuits and components under long-time idling of the battery, capable of preventing overly discharging and malfunction of the rechargeable battery.

Abstract: By analyzing consecutive timestamps at which the battery cell is fully charged in two or more previous time intervals, the charging control method utilizes these consecutive timestamps of a sub-section of each time interval as a charging control way to the rechargeable battery in a present time interval. The charging process of the rechargeable battery in corresponding timestamps of the present time interval is limited to a specific proportion of the fully charged capacity of the battery cells. In such way, the rechargeable battery may have fewer chances to be fully charged at some less used time, which substantially increases the life of the battery.