Abstract: A device estimates the health of a battery by first collecting measurements of the battery over multiple charging and discharging cycles. Scores are assigned to the measurements according to scoring rules stored in a memory of the device. The device calculates battery based on an average of the measurements, where each measurement has an assigned score greater than a threshold.

Abstract: The present invention provides a multi-battery system including a plurality of devices and a processing circuit. Each of the plurality of devices includes a battery, a measurement circuit and a communication interface, wherein the measurement circuit is configured to measure the battery to generate battery information, and the communication interface is configured to transmit the battery information. The processing circuit is configured to receive the plurality of battery information of the plurality of devices, and use a universal gauge master algorithm to process the battery information of the plurality of devices to generate a plurality of gauge results, respectively.

Abstract: A device estimates the health of a battery by first collecting measurements of the battery over multiple charging and discharging cycles. Scores are assigned to the measurements according to scoring rules stored in a memory of the device. The device calculates battery based on an average of the measurements, where each measurement has an assigned score greater than a threshold.

Abstract: A method for estimating a battery power percentage of a battery includes: performing a first fuel gauge operation upon the battery; and using the first fuel gauge operation to generate the battery power percentage of the battery by referring to information measured by a second fuel gauge operation performed upon the battery wherein the second fuel gauge operation is different from the first fuel gauge operation.

Abstract: A method for calibrating a coulomb counting based state-of-charge (SOC) estimation of a battery cell includes: determining whether the battery cell is in a specific charge state; calibrating an initial value for use in the coulomb counting based SOC estimation according to an open circuit voltage (OCV)-based SOC of the battery cell if the battery cell is not in the specific charge state; calibrating the initial value according to a predetermined value if the battery cell is in the specific charge state; and applying the calibrated initial value to the coulomb counting based SOC estimation and restarting an integration of the coulomb counting based SOC estimation based on the calibrated initial value.

Abstract: A battery charging system for charging a battery of a portable device includes: a power supplier, generating a power supplier output voltage and a power supplier output current; and a charging circuit, dynamically updating an over-voltage protection threshold and/or an over-current protection threshold based on a charging current, a battery cell charging voltage and an equivalent impedance of a charge path. The power supplier output current and/or the over-voltage protection threshold and/or the over-current protection threshold are time-varying during the battery is charged. The power supplier performs over-voltage protection and/or over-current protection based on the over-voltage protection threshold and/or the over-current protection threshold from the charging circuit.

Abstract: A method for calibrating a coulomb counting based state-of-charge (SOC) estimation of a battery cell includes: determining whether the battery cell is in a specific charge state; calibrating an initial value for use in the coulomb counting based SOC estimation according to an open circuit voltage (OCV)-based SOC of the battery cell if the battery cell is not in the specific charge state; calibrating the initial value according to a predetermined value if the battery cell is in the specific charge state; and applying the calibrated initial value to the coulomb counting based SOC estimation and restarting an integration of the coulomb counting based SOC estimation based on the calibrated initial value.

Abstract: A state-of-charge (SOC) indication method includes: determining estimated values of a SOC of a battery cell according to at least information regarding a characteristics measurement of the battery cell; performing a smooth and monotonic processing on the estimated values of the SOC to process unusual change in the estimated values, so as to generate processed values of the SOC; remapping the processed values of the SOC according to a remapping threshold setting to obtain remapped values of the SOC; and indicating the SOC of the battery cell with the remapped values.

Abstract: A battery charging system for charging a battery of a portable device includes: a power supplier, generating a power supplier output voltage and a power supplier output current; and a charging circuit, dynamically updating an over-voltage protection threshold and/or an over-current protection threshold based on a charging current, a battery cell charging voltage and an equivalent impedance of a charge path. The power supplier output current and/or the over-voltage protection threshold and/or the over-current protection threshold are time-varying during the battery is charged. The power supplier performs over-voltage protection and/or over-current protection based on the over-voltage protection threshold and/or the over-current protection threshold from the charging circuit.

Abstract: A mobile device performs thermal management during concurrent battery charging and workload execution based on a thermal headroom. The thermal headroom is an amount of power, in a form of heat, that heat dissipation hardware in the mobile device is estimated to dissipate when the mobile device operates at a target temperature. After the thermal headroom is determined, the mobile device determines a first power allocation to system loading, which is caused by one or more applications running on the mobile device. The first power allocation is subtracted from the thermal headroom to obtain a second power allocation to a charger, which charges a battery module of the mobile device while the one or more application are running. The mobile device then sets an input power limit of the charger based on the second power allocation.

Abstract: A method for estimating a battery power percentage of a battery includes: performing a first fuel gauge operation upon the battery; and using the first fuel gauge operation to generate the battery power percentage of the battery by referring to information measured by a second fuel gauge operation performed upon the battery wherein the second fuel gauge operation is different from the first fuel gauge operation.

Abstract: A method capable of accurately estimating a power percentage of a battery includes: performing a first fuel gauge operation to measure a power percentage of the battery to generate first information; performing a second fuel gauge operation to measure the power percentage of the battery to generate second information, the first fuel gauge operation being different from the second fuel gauge operation; and, dynamically determining one among at least the first percentage and the second percentage as the power percentage of the battery.

Abstract: Methods are provided to be able to efficiently and precisely estimate/predict an available capacity of a battery. One method is arranged to estimate/predict the available capacity of the battery according to a first battery percentage result, a second battery percentage result, and a calculated power when the battery is being operated or used within a specific operating range distinct from a normal operating range. Another method is arranged to estimate the available capacity by measuring battery's internal resistance and referencing a precise battery aging model.