A battery management system includes a battery monitoring integrated circuit (BMIC) that diagnoses a state of a battery, a first overvoltage detection unit that generates a first detection signal by comparing a battery voltage of the battery with a first reference voltage, a second overvoltage detection unit that generates a second detection signal by comparing the battery voltage with a second reference voltage different from the first reference voltage, and a micro controller unit (MCU) that controls the battery according to a diagnosis signal from the BMIC and diagnoses an abnormality of an apparatus according to the first and second detection signals, and a battery management method.

A battery management system includes a battery monitoring integrated circuit (BMIC) that diagnoses a state of a battery, a first overvoltage detection unit that generates a first detection signal by comparing a battery voltage of the battery with a first reference voltage, a second overvoltage detection unit that generates a second detection signal by comparing the battery voltage with a second reference voltage different from the first reference voltage, and a micro controller unit (MCU) that controls the battery according to a diagnosis signal from the BMIC and diagnoses an abnormality of an apparatus according to the first and second detection signals, and a battery management method.

Accurate operation of a current monitor is provided by injecting a bias voltage to a maintain de-selected sense amplifier input in an active state. An electronic system includes an output stage to supply a load current and includes two push-pull output drivers having sense resistors supplying a first and a second sense voltage. An included mode control circuit selects between a first and a second operating mode and selects a polarity of the current. An included current monitor receives the sense voltages and has a control input coupled to the mode selection control circuit. The current monitor provides an output that is dependent on both sense voltages in the first operating mode and is indicative of one of the sense voltages selected according to the selected polarity in the second operating mode. The bias voltage is injected into an unselected sense inputs to maintain active operation of the sense amplifier.

Accurate operation of a current monitor is provided by injecting a bias voltage to a maintain de-selected sense amplifier input in an active state. An electronic system includes an output stage to supply a load current and includes two push-pull output drivers having sense resistors supplying a first and a second sense voltage. An included mode control circuit selects between a first and a second operating mode and selects a polarity of the current. An included current monitor receives the sense voltages and has a control input coupled to the mode selection control circuit. The current monitor provides an output that is dependent on both sense voltages in the first operating mode and is indicative of one of the sense voltages selected according to the selected polarity in the second operating mode. The bias voltage is injected into an unselected sense inputs to maintain active operation of the sense amplifier.

A battery state estimating apparatus and method that adds system noise to a recursive filter and corrects parameters used in an extended Kalman filter in consideration of an offset and variance of a current sensor and a voltage sensor.

A battery state estimating apparatus and method that adds system noise to a recursive filter and corrects parameters used in an extended Kalman filter in consideration of an offset and variance of a current sensor and a voltage sensor.

A fast charging method, apparatus, and device for a USB electronic device including obtaining, according to a preset charging current threshold, a corresponding charging data set of the electronic device under the present charging current threshold, determining, according to the charging data set, a maximum charging current value corresponding to the electronic device; setting the determined maximum charging current value as a charging current threshold of the electronic device, and controlling charging of the electronic device according to the charging current threshold.

A fast charging method, apparatus, and device for a USB electronic device including obtaining, according to a preset charging current threshold, a corresponding charging data set of the electronic device under the present charging current threshold, determining, according to the charging data set, a maximum charging current value corresponding to the electronic device; setting the determined maximum charging current value as a charging current threshold of the electronic device, and controlling charging of the electronic device according to the charging current threshold.

A battery system comprises: a battery pack including multiple battery cells; and a battery management system which measures the cell voltages of the multiple battery cells at the time of wake-up so as to configure numbers of the multiple battery cells, periodically measures the cell voltages of the multiple battery cells after the wake-up so as to detect a maximum cell voltage and a minimum cell voltage, compares the minimum cell voltage with the cell voltage of at least one first battery cell to be diagnosed, compares the maximum cell voltage with the cell voltage of at least one second battery cell to be diagnosed, and diagnoses, according to the results of the comparisons, whether the battery cells to be diagnosed are abnormal.

A battery system comprises: a battery pack including multiple battery cells; and a battery management system which measures the cell voltages of the multiple battery cells at the time of wake-up so as to configure numbers of the multiple battery cells, periodically measures the cell voltages of the multiple battery cells after the wake-up so as to detect a maximum cell voltage and a minimum cell voltage, compares the minimum cell voltage with the cell voltage of at least one first battery cell to be diagnosed, compares the maximum cell voltage with the cell voltage of at least one second battery cell to be diagnosed, and diagnoses, according to the results of the comparisons, whether the battery cells to be diagnosed are abnormal.