Abstract: A controller for controlling power delivery to a battery includes a first terminal that provides a first signal to enable a bypass path to deliver power from an interface to charge the battery, and includes a second terminal that provides a second signal to enable a conversion circuit to convert input power received at the interface to output power to charge the battery. The controller also includes circuitry that determines whether a first adapter or a second adapter is connected to the interface, generates the second signal if the second adapter is connected to the interface, generates the first signal and a request if the first adapter is connected to the interface, and provides the request to the first adapter through the interface. The request includes information indicative of a target level and an instruction that causes the first adapter to provide power at the target level to the interface.

Abstract: A dual input power management method includes: monitoring whether a first input terminal has a power supply and whether a second input terminal has a power supply, and accordingly generating a first monitor signal and a second monitor signal; generating a priority signal based on the first monitor signal, the second monitor signal, and an enable signal, to determine an input priority of the first input terminal and the second input terminal; generating a control signal based on a feedback signal indicative of an output voltage and a reference signal; and regulating the output voltage based on the priority signal and the control signal.

Abstract: A battery management system includes multiple sensors, status detection circuitry, and fault detection circuitry. The sensors sense statuses of a battery pack. The status detection circuitry detects whether the battery pack is in a normal condition based on the statuses to generate a detection result. The fault detection circuitry detects whether a fault is present in the battery pack. The sensors include a current sensor that senses a battery current of the battery pack. The fault detection circuitry includes a detection circuit that monitors a rate of change of a voltage at a terminal of the battery pack, and detects whether a fault is present in the current sensor based on a result of a comparison between the rate of change and a threshold and based on the detection result.

Abstract: A dual input power management method includes: monitoring whether a first input terminal has a power supply and whether a second input terminal has a power supply, and accordingly generating a first monitor signal and a second monitor signal; generating a priority signal based on the first monitor signal, the second monitor signal, and an enable signal, to determine an input priority of the first input terminal and the second input terminal; generating a control signal based on a feedback signal indicative of an output voltage and a reference signal; and regulating the output voltage based on the priority signal and the control signal.

Abstract: A battery system comprising multiple battery packs. A battery pack of the battery packs includes a battery, voltage sense circuitry, a control circuit, a control switch and current regulation circuitry. The voltage sense circuitry senses a battery voltage of the battery and an input voltage of the battery pack. The control circuit is coupled to the sense circuitry and is operable for adjusting a level of a reference signal based on attribute data associated with the battery pack and a difference between the battery voltage and the input voltage. The control switch is operable for passing a battery current flowing through the battery. The current regulation circuitry is coupled to the control circuit and the control switch, and is operable for controlling the control switch to regulate the battery current according to the reference signal.

Abstract: A battery controller includes a first driving pin, a second driving pin and a third driving pin. The first driving pin is coupled to a charge switch and is operable for turning on the charge switch to enable a battery pack to be charged by a power source. The second driving pin is coupled to a first discharge switch and is operable for turning on the first discharge switch to enable the battery pack to power a first load. The third driving pin is coupled to a second discharge switch and is operable for turning on the second discharge switch to enable the battery pack to power a second load.

Abstract: A controller for controlling power delivery to a battery includes a first terminal that provides a first signal to enable a bypass path to deliver power from an interface to charge the battery, and includes a second terminal that provides a second signal to enable a conversion circuit to convert input power received at the interface to output power to charge the battery. The controller also includes circuitry that determines whether a first adapter or a second adapter is connected to the interface, generates the second signal if the second adapter is connected to the interface, generates the first signal and a request if the first adapter is connected to the interface, and provides the request to the first adapter through the interface. The request includes information indicative of a target level and an instruction that causes the first adapter to provide power at the target level to the interface.

Abstract: A charge/discharge switch control circuit for a battery pack includes a set of driving terminals and detection circuitry coupled to the driving terminals. The driving terminals provide driving signals to control a status of a switch circuit to enable charging or discharging of the battery pack. The detection circuitry receives voltages at multiple terminals of the switch circuit, and detects a status of an interface of the battery pack according to the status of the switch circuit and a difference between the voltages. The interface can receive power to charge the battery pack and provide power from the battery pack to a load.

Abstract: A battery pack receives a charging current from a charger via a power line. The battery pack includes a battery management unit and a transmitting unit. The battery management unit is coupled to a plurality of battery cells and is operable for acquiring data associated with the battery pack. The transmitting unit is coupled to the battery management unit and is operable for transmitting the data to the charger via a power line.

Abstract: A battery module includes: a battery pack including multiple cells; control circuits corresponding to the cells, each control circuit including a control unit for managing the corresponding cell and a compensation unit for generating a corresponding compensation current such that the sum of the corresponding consumed current and the corresponding compensation current is equal to a target total current, where the control circuits include a first control circuit and a second control circuit, where the first control circuit includes a first control unit operating with a first consumed current, the second control circuit includes a second control unit operating with a second consumed current, and where the first control circuit conditionally generates a first compensation current and the second control circuit conditionally generates a second compensation current based on a comparison of the first consumed current and the second consumed current.

Abstract: A battery module includes: a battery pack including multiple cells; control circuits corresponding to the cells, each control circuit including a control unit for managing the corresponding cell and a compensation unit for generating a corresponding compensation current such that the sum of the corresponding consumed current and the corresponding compensation current is equal to a target total current, where the control circuits include a first control circuit and a second control circuit, where the first control circuit includes a first control unit operating with a first consumed current, the second control circuit includes a second control unit operating with a second consumed current, and where the first control circuit conditionally generates a first compensation current and the second control circuit conditionally generates a second compensation current based on a comparison of the first consumed current and the second consumed current.

Abstract: A battery module includes: a battery pack including multiple cells; control circuits corresponding to the cells, each control circuit including a control unit for managing the corresponding cell and a compensation unit for generating a corresponding compensation current such that the sum of the corresponding consumed current and the corresponding compensation current is equal to a target total current, where the control circuits include a first control circuit and a second control circuit, where the first control circuit includes a first control unit operating with a first consumed current, the second control circuit includes a second control unit operating with a second consumed current, and where the first control circuit conditionally generates a first compensation current and the second control circuit conditionally generates a second compensation current based on a comparison of the first consumed current and the second consumed current.

Abstract: A circuit measures a cell voltage of a cell in a battery. The circuit includes a measurement circuit and a current generator. The measurement circuit includes a first terminal coupled to a positive terminal of a cell via a first resistive element and includes a second terminal coupled to a negative terminal of the cell via a second resistive element. The measurement circuit consumes a first current. The current generator generates a first compensation current according to the first current. The first current and the first compensation current flow from the positive terminal through the first resistive element to the first terminal. The measurement circuit calculates the cell voltage according to a first voltage difference between the first and second terminals when the first compensation current is disabled and according to a second voltage difference between the first and second terminals when the first compensation current is enabled.

Abstract: Method, system, and programs for calibrating battery pack voltage are disclosed. A negative terminal voltage of a cell is changed from a first to a second negative terminal voltage so that a cell voltage is changed from a first to a second output voltage. A positive terminal voltage of the cell is maintained at a substantially constant level. A differential-mode calibration parameter is calculated based on a difference between the first and second output voltages and a difference between the first and second negative terminal voltages. The negative terminal voltage of the cell is then changed from the first to second negative terminal voltage so that the positive terminal voltage of the cell is changed from a first to a second positive terminal voltage and the output voltage is changed from a third to a fourth output voltage. The cell voltage is maintained at a substantially constant value.

Abstract: A charger includes a first terminal, a second terminal and a third terminal. The first terminal and the second terminal are configured for providing an output power to a battery module. The charger also includes a signal generation unit configured for generating an identity signal which indicates an identity of the charger. The charger is configured for outputting the identity signal to the battery module via the third terminal.

Abstract: The present application provides systems and methods for battery temperature detection and parasitic resistance compensation. Compensation circuitry is provided to generate a compensation current, proportional to a battery charging or discharging current, to compensate for the parasitic resistance associated with the line connection between a charger/monitor and a battery pack. The compensation current operates to adjust a reference current supplied to a temperature sensor, to enable accurate temperature measurement of the battery pack while reducing or eliminating influence from the parasitic resistance. The compensation circuitry can be utilized in a battery charger topology to enhance battery charging control and/or a battery monitoring topology to enhance battery discharge control.

Abstract: A method for balancing multiple battery cells which are grouped into multiple battery modules includes: obtaining cell parameters of the battery cells, respectively; calculating an average cell parameter for each of the battery modules according to the cell parameters; identifying a donator module and a receiver module from the battery modules based upon the average cell parameter; and transferring energy from the donator module to the receiver module to balance the battery cells.

Abstract: A charger includes a first terminal, a second terminal and a third terminal. The first terminal and the second terminal are configured for providing an output power to a battery module. The charger also includes a signal generation unit configured for generating an identity signal which indicates an identity of the charger. The charger is configured for outputting the identity signal to the battery module via the third terminal.

Abstract: A battery module includes: a battery pack including multiple cells; control circuits corresponding to the cells, each control circuit including a control unit for managing the corresponding cell and a compensation unit for generating a corresponding compensation current such that the sum of the corresponding consumed current and the corresponding compensation current is equal to a target total current, where the control circuits include a first control circuit and a second control circuit, where the first control circuit includes a first control unit operating with a first consumed current, the second control circuit includes a second control unit operating with a second consumed current, and where the first control circuit conditionally generates a first compensation current and the second control circuit conditionally generates a second compensation current based on a comparison of the first consumed current and the second consumed current.

Abstract: A detection circuit includes a sensing unit, a signal reference source, and a detecting unit. The sensing unit provides a sensed signal by sensing an input signal representing a status of a battery. The signal reference source comprises a reference node and determines a signal reference at the reference node, and receives and is biased by the sensed signal at the same reference node to generate a trigger signal indicative of a difference between the sensed signal and the signal reference. The detecting unit is coupled to the signal reference source and generates an output signal according to the trigger signal to indicate an abnormal condition is present in the battery.