초록 ▼

A monitoring apparatus and method are disclosed for monitoring and/or indicating energy that a battery power source has then remaining and/or can deliver for utilization purposes as, for example, to an electric vehicle. A battery mathematical model forms the basis for monitoring with a capacity pred

A monitoring apparatus and method are disclosed for monitoring and/or indicating energy that a battery power source has then remaining and/or can deliver for utilization purposes as, for example, to an electric vehicle. A battery mathematical model forms the basis for monitoring with a capacity prediction determined from measurement of the discharge current rate and stored battery parameters. The predicted capacity is used to provide a state-of-charge indication. Self-calibration over the life of the battery power supply is enacted through use of a feedback voltage based upon the difference between predicted and measured voltages to correct the battery mathematical model. Through use of a microprocessor with central information storage of temperature, current and voltage, system behavior is monitored, and system flexibility is enhanced.

대표청구항 ▼

A monitoring device for a battery power supply, said device comprising: input means adapted to receive a current signal from a battery power supply to be monitored; first capacity means connected with said input means to receive said current signal therefrom and responsive thereto providing an outpu

A monitoring device for a battery power supply, said device comprising: input means adapted to receive a current signal from a battery power supply to be monitored; first capacity means connected with said input means to receive said current signal therefrom and responsive thereto providing an output signal indicative of the used capacity of a said battery power supply then being monitored; second capacity means connected with said input means to receive said current signal therefrom, said second capacity means providing predicted parameters dependent upon the diffusion characteristics of said battery power supply, and said second capacity means being responsive to said current signal and to said predicted parameters of said battery power supply to provide an output signal indicative of the predicted remaining capacity of a said battery power supply then being monitored; and determining means connected with first and second capacity means to receive said outputs therefrom and responsive thereto providing an output signal indicative of the state-of-charge of said battery power supply then being monitored.