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    • 2. 发明授权
    • Method for charging a battery
    • Verfahren zur Ladung einer Batterie
    • EP1227563B1
    • 2017-04-12
    • EP01310890.7
    • 2001-12-24
    • Nytell Software LLC
    • Ruha, AnttiRuotsalainen, TarmoTervaluoto, Jussi-PekkaKauppinen, Jani
    • H02J7/00H02J7/04H02J7/16G01R31/36H01M10/44H02M1/00
    • H01M10/44G01R31/3606H02J7/0072H02M2001/0009
    • Disclosed is a method for charging a battery and circuitry for performing the method. The method includes steps of: (a) generating a charging current (Ich) for a battery; (b) generating a replica current (Irep) of Ich, where Irep=Ich/N, where N > 1; (c) measuring a voltage drop induced by Irep across a measurement resistance; and (d) using the measured voltage drop for controlling a magnitude of Ich. Preferably N is greater than about 10, more preferably N is greater than about 100, and in the most preferred embodiment N is in a range of about 100 to about 1000. The step of generating the charging current (Ich) includes a step of operating a first device having an input node coupled to a source of charging current, the step of generating the replica current (Irep) includes a step of operating a second device having an input node coupled to the source of charging current; wherein the first device and the second device are both driven with the same control signal. The control signal may be a pulse width modulated signal having a pulse width that is controlled as a function of the measured voltage drop across the measurement resistance, or a DC voltage having an adjustable voltage value. In the preferred embodiment the step of generating the replica current (Irep) includes a step of operating a servo loop to force a potential appearing at an output node of the second device to equal a potential appearing at an output node of the first device. A battery discharge measurement circuit is also disclosed, and operates in accordance with the same principles as the battery charging circuit.
    • 公开了一种用于对用于执行该方法的电池和电路进行充电的方法。 该方法包括以下步骤:(a)产生用于电池的充电电流(Ich); (b)产生Ich的复制电流(Irep),其中Irep = Ich / N,其中N> 1; (c)通过测量电阻测量由Irep引起的电压降; 和(d)使用测量的电压降来控制Ich的大小。 优选地,N大于约10,更优选N大于约100,并且在最优选的实施方案中,N在约100至约1000的范围内。产生充电电流(Ich)的步骤包括操作步骤 具有耦合到充电电流源的输入节点的第一装置,产生复制电流(Irep)的步骤包括操作具有耦合到充电电流源的输入节点的第二装置的步骤; 其中第一装置和第二装置都以相同的控制信号驱动。 控制信号可以是具有脉冲宽度的脉宽调制信号,该脉冲宽度被控制为测量电阻上测量的电压降的函数,或具有可调电压值的直流电压。 在优选实施例中,生成复制电流(Irep)的步骤包括操作伺服环路以迫使出现在第二设备的输出节点处的电位等于出现在第一设备的输出节点处的电位的步骤。 还公开了电池放电测量电路,并且根据与电池充电电路相同的原理进行操作。