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    • 8. 发明授权
    • Calculating remaining battery capacity based on battery-side end voltage and device-side end voltage
    • 基于电池侧端电压和器件端电压计算剩余电池容量
    • US07649339B2
    • 2010-01-19
    • US12074477
    • 2008-03-04
    • Masaki SakuraiYukio TsuchiyaHideyuki Sato
    • Masaki SakuraiYukio TsuchiyaHideyuki Sato
    • H01M10/46
    • G01R31/362G01R31/3655
    • A remaining battery capacity indicating apparatus includes an end voltage accumulated value setting unit operable to set an accumulated value indicative of a remaining capacity of a lithium-ion secondary battery, the accumulated value being set in a fully charged state of the battery so that the accumulated value reaches zero when a voltage in the battery is a device-side end voltage. It is determined whether a battery-side end voltage which ends discharges from the lithium-ion secondary battery corresponds to the device-side end voltage. If the battery-side end voltage does not correspond to the device-side end voltage, then the accumulated value is corrected in response to the device-side end voltage. A remaining capacity of the battery, corresponding to the device-side end voltage, is calculated based on the corrected accumulated value, and the calculated remaining capacity of the battery is displayed on a display unit. If the device-side end voltage does not correspond to the battery-side end voltage, then the remaining capacity of the battery is displayed on the device side.
    • 剩余电池容量指示装置包括终端电压累加值设定单元,其可操作以设定指示锂离子二次电池的剩余容量的累积值,所述累积值被设置在电池的完全充电状态,使得累积 当电池中的电压为器件侧端电压时,值达到零。 确定从锂离子二次电池排出的电池侧端电压是否对应于器件侧端电压。 如果电池侧端电压不对应于器件侧端电压,则根据器件侧端电压对累加值进行校正。 基于校正后的累计值计算与设备侧端电压相对应的电池的剩余容量,并将计算出的电池余量显示在显示单元上。 如果设备侧端电压不对应于电池侧端电压,则在设备侧显示电池的剩余容量。
    • 9. 发明申请
    • Battery Pack and Battery Protection Method
    • 电池组和电池保护方法
    • US20090220825A1
    • 2009-09-03
    • US11912853
    • 2007-02-02
    • Ryoichi NakashimaMasashi KumadaHideyuki SatoYoshio HaradaMichihiro KanekoKentaro Suzuki
    • Ryoichi NakashimaMasashi KumadaHideyuki SatoYoshio HaradaMichihiro KanekoKentaro Suzuki
    • H01M10/44H02H7/18H02J7/00
    • H02J7/0031H01M10/441H01M10/482H02J2007/0037H02J2007/004
    • A battery protection operation having higher safety is performed in a battery pack. Presence/absence of plural abnormal states including at least an overcharge state and an overdischarge state based on detected results of voltage between a positive terminal and a negative terminal of a battery cell as well as an overcurrent charge state and an overcurrent discharge state indicating that charge current and discharge current are excessive respectively based on detected results of charge and discharge current of the battery cell are determined at any time and an abnormality determination flag showing a determination result of respective abnormal states as a flag is stored. In addition, control states A to D according to combinations of respective operation states of the a discharge current shut-off circuit selectively shutting off discharge current of the battery cell and a charge current shut-off circuit selectively shutting off charge current of the battery cell are defined, and to which control state the state should be changed will be determined based on a value of the abnormality determination flag.
    • 在电池组中执行具有更高安全性的电池保护操作。 基于电池单元的正极端子和负极端子之间的电压的检测结果以及过电流充电状态和表示充电状态的过电流放电状态,存在至少包括过充电状态和过放电状态的多个异常状态的存在/不存在 根据检测到的电池单元的充放电电流的结果,电流和放电电流分别过大,存储表示作为标志的各异常状态的判定结果的异常判定标志。 此外,根据放电电流切断电路的各个工作状态的组合的选择性地关闭电池单元的放电电流和充电电流切断电路的选择性地关闭电池单元的充电电流的控制状态A至D 并且将基于异常判定标志的值来确定要改变状态的控制状态。