Abstract: A battery management device includes a detection circuit, a charge control circuit, and a discharge control circuit. The detection circuit is configured to output a first control signal and a second control signal according to a volume of a rechargeable battery. The charge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to open a charge loop of the rechargeable battery according to the first control signal. The discharge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to close a discharge path of the rechargeable battery according to the second control signal.

Abstract: A power control circuit is disclosed. The power control circuit includes a first receiving circuit, a second receiving circuit, a first power supply circuit and a second power supply circuit. The first receiving circuit is electrically connected to a charging circuit and a first port and configured to charge a power unit according to a first port voltage. The second receiving circuit is electrically connected to the charging circuit and a second port and configured to charge the power unit according to a second port voltage. The second receiving circuit is further configured to be disabled according to the first port voltage. The first power supply circuit is configured to supply power to the first port. The second power supply circuit is configured to supply power to the second port. Thus, the power control circuit transmits power or data through different ports.

Abstract: A detection circuit is provided, including a connector and a processing circuit. The connector comprises a first detection terminal and a second detection terminal. The second detection terminal is electrically connected to a first reference potential. The processing circuit is electrically connected to the first detection terminal and is used for receiving a power supply signal. When the connector is connected to a connecting port, the first detection terminal is electrically connected with the second detection terminal through the connecting port to form an electrical loop, so that the processing circuit detects a detection potential on the first detection terminal, and then determines whether the connector is correctly connected to the connecting port.

Abstract: A power control circuit is disclosed. The power control circuit includes a first receiving circuit, a second receiving circuit, a first power supply circuit and a second power supply circuit. The first receiving circuit is electrically connected to a charging circuit and a first port and configured to charge a power unit according to a first port voltage. The second receiving circuit is electrically connected to the charging circuit and a second port and configured to charge the power unit according to a second port voltage. The second receiving circuit is further configured to be disabled according to the first port voltage. The first power supply circuit is configured to supply power to the first port. The second power supply circuit is configured to supply power to the second port. Thus, the power control circuit transmits power or data through different ports.

Abstract: A detection circuit is provided, including a connector and a processing circuit. The connector comprises a first detection terminal and a second detection terminal. The second detection terminal is electrically connected to a first reference potential. The processing circuit is electrically connected to the first detection terminal and is used for receiving a power supply signal. When the connector is connected to a connecting port, the first detection terminal is electrically connected with the second detection terminal through the connecting port to form an electrical loop, so that the processing circuit detects a detection potential on the first detection terminal, and then determines whether the connector is correctly connected to the connecting port.

Abstract: A charging-discharging module of the energy storage unit is provided. The charging-discharging module of the energy storage unit includes a first energy storage unit; a second energy storage unit; a first switching unit electrically connected to a first terminal of the second energy storage unit; a selecting circuit electrically connected to a first terminal of the first energy storage unit and the first switching unit to selectively conduct the first energy storage unit or the second energy storage unit to a system circuit; and a processing unit electrically connected to the first switching unit. A charging and discharging method is also provided.

Abstract: A charging circuit applied to a post-stage circuit includes a power converting circuit, a power storage circuit, a switching circuit and a processing circuit. The power converting circuit receives an external voltage and converts the external voltage to a charging voltage. The power storage circuit is coupled to the power converting circuit and receives the charging voltage to store the power. The switching circuit is coupled to the power converting circuit and the power storage circuit. The processing circuit is coupled to the switching circuit and controls the charging circuit operated in a first mode or a second mode. When operated in the first mode, the external voltage supplies power to the post-stage circuit. When operated in the second mode, the charging voltage supplies power to the post-stage circuit.

Abstract: A battery management device includes a detection circuit, a charge control circuit, and a discharge control circuit. The detection circuit is configured to output a first control signal and a second control signal according to a volume of a rechargeable battery. The charge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to open a charge loop of the rechargeable battery according to the first control signal. The discharge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to close a discharge path of the rechargeable battery according to the second control signal.

Abstract: A charging method of a portable electronic device, adapted to charge a battery module of a portable electronic device, the charging method comprising detecting a battery voltage and a charging current of the battery module; determining whether the portable electronic device operates at a constant current mode according to the battery voltage; entering an over voltage protection charging loop while the portable electronic device operates at the constant current mode and allows the battery module to be charged up at a maximum charging voltage, and leaving the over voltage protection charging loop while the charging current is smaller than a predetermined current, wherein the maximum charging voltage is gradually decreased according to a comparison result between the battery voltage and an overcharging protection voltage; and setting the maximum charging voltage as a full charge voltage while leaving the over voltage protection charging loop.

Abstract: The power supply module includes a switching power circuit, a switching unit, a power storage unit and a control unit. The switching power circuit is coupled between an input terminal and an output terminal, and used to convert a first voltage to a second voltage. The switching unit is connected to the switching power circuit in parallel. The power storage unit is coupled to the output terminal. The control unit is coupled to the switching unit and controls the switching unit to turn on selectively according to a detecting signal corresponding to a charging or discharging status of the power storage unit to output the first voltage to the output terminal.

Abstract: A charging circuit applied to a post-stage circuit includes a power converting circuit, a power storage circuit, a switching circuit and a processing circuit. The power converting circuit receives an external voltage and converts the external voltage to a charging voltage. The power storage circuit is coupled to the power converting circuit and receives the charging voltage to store the power. The switching circuit is coupled to the power converting circuit and the power storage circuit. The processing circuit is coupled to the switching circuit and controls the charging circuit operated in a first mode or a second mode. When operated in the first mode, the external voltage supplies power to the post-stage circuit. When operated in the second mode, the charging voltage supplies power to the post-stage circuit.

Abstract: A charging-discharging module of the energy storage unit is provided. The charging-discharging module of the energy storage unit includes a first energy storage unit; a second energy storage unit; a first switching unit electrically connected to a first terminal of the second energy storage unit; a selecting circuit electrically connected to a first terminal of the first energy storage unit and the first switching unit to selectively conduct the first energy storage unit or the second energy storage unit to a system circuit; and a processing unit electrically connected to the first switching unit. A charging and discharging method is also provided.

Abstract: A power adapter includes a power converting circuit, a connecting terminal and a controller. The power converting circuit is used to convert an input voltage to an output voltage according to a control signal. The connecting terminal is connected to an electronic device to allow the output voltage outputted by the power converting circuit to charge the electronic device. The controller receives an identifying command from the electronic device when the electronic device is connected to the connecting terminal, and outputs the control signal according to the identifying command.

Abstract: A charging method and a portable electronic device using the same are provided. The charging method includes following steps: detecting a battery voltage and a charging current of a battery module; determining whether the portable electronic device operates at a constant voltage (CV) charging mode; executing an impedance calculation at the CV charging mode to obtain a first battery voltage corresponding to a first predetermined current and a second battery voltage corresponding to a second predetermined current; calculating a compensation impedance according to the predetermined current and the battery voltages; setting a maximum charging voltage according to the compensation impedance and executing a CV charging to the battery module accordingly; determining whether a current variation of the charging current is larger than a threshold value; re-executing the impedance calculation; updating a setting value of the maximum charging voltage when the current variation is larger than the threshold value.

Abstract: A wireless power supply and power receiving device includes a sensor, a control module, a coil module and a rectifying and switching module. The control module determines a position or a direction of the wireless power supply and power receiving device according to the sensor, and the rectifying and switching module selectively operates in a wireless power supply mode or a wireless power receiving mode according to the position or the direction. When in the wireless power supply mode, the rectifying and switching module converts the power energy to wireless power energy to provide power to a first external device by using the coil module. When in the wireless power receiving mode, the rectifying and switching module receives wireless power energy from a second external device via the coil module.

Abstract: A power supply control method and a portable electronic device using the same are provided. The power supply control method includes following steps: detecting an input voltage and an input current at a power input terminal of the portable electronic device; setting a plurality of detection loads sequentially to control a power adaptor to provide a detection current as the input current for the portable electronic device respectively; calculating an equivalent input impedance of the power input terminal according to the detection current and the corresponding input voltage; calculating an actual output voltage of the power adaptor according to the equivalent input impedance, the input voltage, and the input current; and setting a work load according to the actual output voltage to control the power adaptor to provide a work current as the input current for the portable electronic device.

Abstract: An electronic device includes an energy collection circuit, a rectifier circuit, and a control unit. The energy collection circuit receives an energy signal transmitted via transmission frequency from a wireless charger base. The rectifier circuit generates a drive voltage according to the energy signal. The control unit compares the drive voltage with a reference voltage, and compares the transmission frequency with a reference frequency. When the drive voltage is less than or equals to the reference voltage, or when the transmission frequency is lower than or equals to the reference frequency, the control unit outputs position deviation information. The electronic device detects the efficiency of the wireless charging, and reminds the user whether the position of the electronic device needs to be adjusted, which ensures an efficient charging.

Abstract: An electronic device and a method for recognizing output power of a power supply thereof are provided. The electronic device includes a host and a power supply. The power supply is coupled to the host, receives an input power and converts the input power to a supplied power. The power supply transmits the supplied power to the host, and loads a notification signal to the supplied power in at least a time period. The acknowledge signal is a periodic clock signal, and corresponds to the output power of the power supply. The power supply loads the acknowledge signal to the supplied power in one or more time periods, and transmits the acknowledge signal to the corresponding host. The host can get the output power of the power supply via the acknowledge signal, which can improve efficiency and security of the supplied power.

Abstract: A charging circuit and a charging method of a battery are disclosed. The charging circuit provides a charging current to charge the battery. The charging circuit includes a charging control module, a current detecting module and a compensation module. The charging control module provides a charging voltage. The current detecting module detects the charging current, and generates a detecting voltage according to the charging current. The compensation module detects the charging voltage, and provides a feedback voltage to the charging control module according to the detecting voltage and the charging voltage.

Abstract: A power adapter includes a power converting circuit, a connecting terminal and a controller. The power converting circuit is used to convert an input voltage to an output voltage according to a control signal. The connecting terminal is connected to an electronic device to allow the output voltage outputted by the power converting circuit to charge the electronic device. The controller receives an identifying command from the electronic device when the electronic device is connected to the connecting terminal, and outputs the control signal according to the identifying command.