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Method and its device which rate the accumulation of electricity quantity inside the electrochemistry electric battery and the battery
Method and its device which rate the accumulation of electricity quantity inside the electrochemistry electric battery and the battery
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机译:评估电化学电池和电池内部电量累积的方法及其装置
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摘要
A testing device applies time-varying electrical excitation to a cell or battery and senses the resulting time-varying electrical response. Computation circuitry within the device uses voltage and current signals derived from the excitation and response signals as inputs and computes values of elements of an equivalent circuit representation of the cell or battery. The relative charge SOC) of the cell or battery is calculated from the value of the conductance component G of a particular parallel G-C subcircuit of the equivalent circuit. The absolute charge (Ah) contained in the cell or battery is calculated from the value of the capacitance component C of a different parallel G-C subcircuit. Relative or absolute charge values are then either displayed to the user or are used to control an external process such as charging of the battery.
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