Abstract: A system for balancing a battery assembly and related methods for making and using same are provided. The system can obtain a status of a battery assembly with a plurality of batteries. One or more of the batteries can be selected based on the obtained status, and the selected batteries can be balanced. The system, for example, can control active balancing of the selected batteries when the battery assembly is in a static state and control selective discharging of the selected batteries when the battery assembly is in a discharging state. When the battery assembly is in a charging state, selective charging of the selected batteries can be controlled. One or more cells that comprise the individual batteries alternatively can be selected for balancing. A protective circuit can help ensure safety of the balancing. Battery balancing can be energy-efficient and time-efficient. The lifetime of the battery assembly can be extended.

Abstract: Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.

Abstract: A charging device and method for controlling the same may include a charging connector connectable to a vehicle; a power connector connectable to a power source; a communication module configured to receive beacon signals from a plurality of beacons and send beacon information included in the received beacon signals to a charging management server; and a controller configured to, upon reception of a charging authorization signal from the charging management server, charge the vehicle connected to the charging connector and control the communication module to send information related to an amount of power used for charging the vehicle to the charging management server.

Abstract: A motor driving and battery charging apparatus is provided. The apparatus includes a motor having a plurality of coils, a rectifier circuit connected to the plurality of coils, and a high voltage battery. An inverter generates a driving current from an output voltage of the high voltage battery and supplies the driving current to the motor while the motor operates. While the high voltage battery is charged, the rectifier circuit rectifies an alternating current (AC) of an external power source, the motor and the inverter compensate for a power factor of the current rectified by the rectifier circuit, and the high voltage battery is charged with an output current of the motor and the inverter.

Abstract: A device for monitoring electricity generation comprising: an acquirer that acquires a total value of cell voltage from multiple cells including fuel cells; an increaser that increases the anode gas now rate to the multiple cells when the total value shows a possibility of negative voltage occurring in some of the multiple cells; and a judger that judges if negative voltage occurred in some of the multiple cells based on the total value following the increase of the anode gas flow rate.

Abstract: A quick-charging control method and system are suitable for mobile terminals. The method includes: a first controller obtaining a voltage value of a cell, and sending the voltage value to a second controller; the second controller searching a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell, and sending the current regulation instruction to a regulation circuit; the regulation circuit performing a current regulation according the current regulation instruction, and outputting a power signal; the second controller sending a second switch-off instruction to the first controller and a second switch circuit respectively if second abnormal charging information is detected; and the second switch circuit, controlling the charging adapter to stop sending the power signal after the current regulation if the second switch circuit receives the second switch-off instruction.

Abstract: A method of managing a battery system, the battery system including at least one battery cell, at least one sensor configured to measure at least one characteristic of the battery cell, and a battery management system including a microprocessor and a memory, the method comprising receiving by the battery management system, from the at least one sensor at least one measured characteristic of the battery cell at a first time and at least one measured characteristic of the battery cell at a second time. The battery management system estimating, at least one state of the battery cell by applying a physics-based battery model, the physics based battery model being based on differential algebraic equations; and regulating by the battery management system, at least one of charging or discharging of the battery cell based on the at least one estimated state.

Abstract: Battery malfunction is limited by accelerating battery discharge once battery voltage reaches a low voltage threshold. This can be done programmatically and/or using a hardware arrangement that shorts the battery to ground when the low voltage threshold is reached.

Abstract: Provided is a first coil device that faces a second coil device in a facing direction, and wirelessly transmits or receives power, the first coil device including a first coil portion, and a first auxiliary magnetic member provided adjacent to the first coil portion in a first direction orthogonal to the facing direction. The first auxiliary magnetic member is configured to be closer to the second coil device with increasing distance in the first direction from the first coil portion.

Abstract: A pilot signal detection and indication unit includes a pilot signal scaling unit structured to generate a scaled pilot signal by shifting a pilot signal using a bias voltage and scaling down the pilot signal, a pilot signal duty cycle comparator unit structured to generate a limited pilot signal that has a fixed peak voltage and a duty cycle that is equivalent to the duty cycle of the pilot signal, a processing unit structured to determine a voltage value and the duty cycle value of the pilot signal from the scaled pilot signal and the limited pilot signal, and to generate an indication signal based on the determined voltage value and duty cycle value, and an indication unit having a number of indicators and being structured to activate selected ones of the number of indicators based on the indication signal.

Abstract: The present disclosure relates to a foreign object detection method of a wireless power transmitter, and the method may include acquiring the frequency characteristics of a current flowing through a coil within the wireless power transmitter, comparing a peak frequency with a resonant frequency, and detecting whether or not the foreign object is placed on the transmitter through the comparison. In addition, the present disclosure relates to an interference avoidance method of a wireless power transmitter, and the method may include connecting a head unit of an automobile in a wireless manner through a communication device, receiving a first signal for avoiding interference from the head unit to stop wireless charging or change a first frequency band to a second frequency band, and receiving a second signal from the head unit to resume the wireless charging or change to the first frequency band.

Abstract: A differential voltage measurement device includes a first capacitor, a second capacitor of which the capacity is smaller than that of the first capacitor, a differential amplification unit which outputs a voltage according to a differential voltage between a voltage held in the first capacitor and a voltage held in the second capacitor, and a control unit which guides a first voltage to the first capacitor and guides a second voltage to the second capacitor in a state where the first capacitor holds the first voltage.

Abstract: Provided are a charging rate leveling device and a power supply system including the charging rate leveling device capable of leveling more quickly a charging rate of a plurality of battery cells a battery pack includes. In the power supply system a controlling device includes a two-way DC/DC convertor connected to an auxiliary battery separated from the battery pack, a switch array capable of selectively connecting each of the plurality of auxiliary battery cells the battery pack includes to the two-way DC/DC convertor, so as to charge the battery cell with electric power of the auxiliary battery, and a controller controlling the switch array to connect the lowest voltage battery cell selected among the plurality of battery cells, so as to reduce a difference between charging rates SOC of each of the plurality of battery cells.

Abstract: A battery voltage monitoring apparatus monitoring a voltage of an assembled battery, the assembled battery including a plurality of battery cells, comprising; a first voltage sensor module that monitors voltages of a plurality of battery cells arranged at a high voltage side; and a second voltage sensor module that monitors voltages of a plurality of battery cells arranged at a low voltage side, wherein the second voltage sensor module comprises a voltage sensor that is connected to a terminal and detects a voltage of a battery cell connected to the terminal, the terminal being supplied with a power source potential of the second voltage sensor module, the voltage sensor comprises a comparator including a first terminal and a second terminal, the first terminal being supplied with a voltage according to the voltage of the battery cell, the second terminal being supplied with a reference voltage.

Abstract: A bidirectional inductive and conductive electrical apparatus can include: an inverter including a first inverter leg, a second inverter leg, and a control switch disposed between a first upper node of the first inverter leg and a second upper node of the second inverter leg; and an inductor component connecting a first middle node the first inverter leg and a second middle node of the second inverter leg, the control switch configured to connect the first upper node to the second upper node under an ON state during inductive power transfer and configured to disconnect the first upper node from the second upper node under an OFF state during conductive power transfer.

Abstract: The present invention provides a method for controlling a charging voltage of a 12V auxiliary battery for a hybrid vehicle, which can (1) improve charging efficiency of an auxiliary battery by increasing the output voltage of a DC-DC converter during cold start when the outside air temperature is low, (2) improve the charging efficiency of the auxiliary battery by increasing or decreasing the output power of the DC-DC converter according to the state of charge of the auxiliary battery and by increasing the output voltage of the DC-DC converter when many electrical loads are turned on, and (3) allow the DC-DC converter to provide continuous power supply for charging the auxiliary battery by turning on a main switch disposed between a high voltage battery and the DC-DC converter based on a reverse power conversion operation of the DC-DC converter even in the case where the voltage of the auxiliary battery falls below 9V.

Abstract: An electronic device and a method for controlling power supply are provided. The electronic device includes a first transmission port, a second transmission port, a switching power circuit and a control unit. The first transmission port is connected to a first external device, and the second transmission port is connected to a second external device. The switching power circuit is coupled to the first transmission port, the second transmission port and the power storage unit. The control unit controls the switching power circuit according to the voltage level of the first detecting pin of the first transmission port and the voltage level of the second detecting pin of the second transmission port, so as to make the first external device and the second external device to transmit power to the power storage unit.

Abstract: A balance correction apparatus is stopped at an appropriate timing. Provided are an inductor; a first switching device electrically connected between another end of the inductor and another end of the first electric storage cell; a second switching device electrically connected between another end of the inductor and another end of the second electric storage cell; and a control section supplying a control signal to control ON/OFF operations of the first switching device and the second switching device, to the first switching device and the second switching device, where the control section obtains information representing a voltage difference between the first electric storage cell and the second electric storage cell, and the control section supplies the control signal to cause both of the first switching device and the second switching device to operate to be OFF, when the voltage difference is equal to or smaller than a predetermined value.

Abstract: An apparatus for transmitting charging power wirelessly to a vehicle is provided. The apparatus comprises a first coupler having a first reactance at an operating frequency and configured to wirelessly receive power from a power source, the first coupler wound on a ferromagnetic core. The apparatus comprises a first capacitor having a second reactance at the operating frequency and electrically connected in series with the first coupler, the second reactance having a magnitude equal to a magnitude of the first reactance. The apparatus comprises a second capacitor electrically connected in parallel across the first coupler and the first capacitor. The apparatus comprises a first base coupler configured to be electrically connected in parallel across the second capacitor via a first switch. A magnitude of a peak voltage across the second capacitor is proportional to a magnitude of a peak voltage induced in the first coupler at the operating frequency.

Abstract: A charging apparatus for wireless earphones includes a rechargeable battery, first and second electrical cables, and first and second charging receptacles. The first charging receptacle is electrically connected to the rechargeable battery by the first electrical cable and includes a cavity for receiving a first one of the wireless earphones. The first charging receptacle further includes first electrical contacts to electrically interface to electrical contacts of the first wireless earphone and a first audio path between an outer surface of the first charging receptacle and an inner surface of the cavity. The second charging receptacle is electrically connected to the rechargeable battery by the second electrical cable and includes a cavity for receiving a second one of the wireless earphones. The second charging receptacle further includes second electrical contacts to electrically interface to electrical contacts of the second wireless earphone. The second charging receptacle also includes an audio path.