Abstract: This application discloses wireless charging apparatuses, methods, and systems. One apparatus includes: a direct current to alternating current (DC-to-AC) inverter circuit configured to invert a DC output by a DC power supply to an AC; a compensation circuit configured to compensate the AC output by the DC-to-AC inverter circuit and send the AC obtained after the compensation to a transmitting coil; the transmitting coil configured to receive the AC and generate an AC magnetic field; an impedance adjustment circuit comprising one or more inductive branches; and a controller configured to control on or off of the switch in the inductive branch to change a current flowing out of the lagging bridge arm to enable a controllable switching transistor of the lagging bridge arm to implement zero-voltage switching.

Abstract: The present disclosure relates to a wireless-chargeable device and an apparatus for controlling a magnetic field strength of a magnetic field generated by an electromagnet. The wireless-chargeable device includes an electromagnet (102) and a control circuit (104). The control circuit (104) is configured to control a magnetic field strength generated by an electro-magnet for alignment of a power-receiving coil (106) of the wireless-chargeable device with respect to a power-transmitting coil of a wireless power supply device.

Abstract: Systems, methods and apparatus for wireless charging are disclosed. An apparatus has a wireless charging apparatus has a battery charging power source coupled to a charging circuit, a plurality of charging cells configured to provide a charging surface, and a controller. The controller may be configured to provide a pulse to the charging circuit, detect a frequency of oscillation of the charging circuit responsive to the pulse or a rate of decay of the oscillation of the charging circuit, and determine that a chargeable device has been placed in proximity to a coil of the charging circuit based on changes in a characteristic of the charging circuit. The pulse may have a duration that is less than half the period of a nominal resonant frequency of the charging circuit.

Abstract: The present application discloses a wake-up method and wake-up system for a battery management system. The method may include converting, by a conversion unit, a low-voltage power signal detected at a low-voltage input port into a high-voltage wake-up signal, and receiving, by a high-voltage control module, a working voltage provided by a power battery pack under control of the high-voltage wake-up signal; controlling, by the high-voltage control module, the high-voltage transmission module to be turned on, providing the working voltage to a synchronous rectifying module by the turned-on high-voltage transmission module, and converting high-voltage electric energy provided by the power battery pack into low-voltage electric energy; and transmitting, under control of the synchronous rectifying module, the low-voltage electric energy to the low-voltage controller, and waking up the battery management system by the low-voltage controller.

Abstract: A battery control circuit controls a balance of cell voltage values of cells coupled in series, and includes connection terminals respectively coupling to a positive electrode of a corresponding cell, a ground terminal coupled to an internal ground of the battery control circuit and coupling to a negative electrode of a cell located at a lowest stage of the cells, a control circuit to select, from the connection terminals, at least one connection terminal coupled to the internal ground via an internal current path of the battery control circuit, and a current generation circuit to supply a terminal current whose current value varies according to the cell voltage value of the cell whose positive electrode is coupled to the at least one of the connection terminals selected by the control circuit, from the at least one of the connection terminals to the internal ground via the internal current path.

Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system operates a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting the input voltage from the power source and a low-voltage state in the battery during operation of the charging circuit, the system uses a first inductor group in the charging circuit to down-convert the input voltage to a target voltage of the battery that is lower than a voltage requirement of the high-voltage subsystem. The system also uses a second inductor group in the charging circuit to up-convert the target voltage to power the high-voltage subsystem.

Abstract: Methods and apparatus to charge electric vehicles are disclosed. An example method includes monitoring, via a processor, a battery charge level of an electric vehicle receiving a battery charge from a mobile charging unit. The example method includes determining, via the processor, a remaining trip distance of the electric vehicle from a location of the battery charge to a trip destination. The example method further includes determining, via the processor, a target charge level for the battery charge. The target charge level corresponds to when the battery charge level provides a first probability that the electric vehicle will reach the trip destination without an additional battery charge. The example method also includes generating, via the processor, a signal to stop the battery charge when the battery charge level reaches the target charge level.

Abstract: A solar charging control device that controls a charged state of a plurality of vehicles connected to each other so that the vehicles are configured to transmit and receive power via a power network in a vehicle sharing system that uses vehicles each having a solar power generation device mounted therein includes an electronic control device. The electronic control device receives a reservation for use of the vehicle, manages rental and return of the vehicles based on the reservation for use, sets the vehicle of which the amount of charging of the battery satisfies a predetermined condition among the vehicles connected to the power network as a charging target vehicle, and manages power transmission and reception via the power network so that a battery of the charging target vehicle is able to be charged using a generation power of the solar power generation device mounted in another vehicle.

Abstract: An electric charging control device is obtained which detects welding abnormality of an electric contactor(s) along charging passages from an electric charging plug reaching a main battery; electric charging contactors and main electric contactors are connected in series; a first voltage monitoring circuit connected between power-supply points P1 and N1, a second voltage monitoring circuit connected therebetween, and a voltage-level detection circuit connected between the midpoints P2 and N2 are provided for producing a first voltage detection signal DET1, a second voltage detection signal DET2, and a main voltage detection signal DET0, each of which is a respective determination logic signal responding to the presence or absence of a monitored voltage; and a test voltage is received from either one of the main battery and a ground-based electric charging power-source apparatus, so that the presence or absence of welding abnormality in any one of the contactors is determined.

Abstract: A wireless power transfer system is provided. The wireless power transfer system comprises a resonator comprising a capacitor. The capacitor comprises at least two active electrodes; and a passive electrode adjacent the active electrodes and configured to encompass the active electrodes to at least partially eliminate environmental influences affecting the active electrodes and to increase the overall capacitance of the system. The resonator further comprises at least one inductive coil electrically connected to the active electrodes, wherein the resonator is configured to extract power from a generated electric field via resonant electric field coupling.

Abstract: A charger circuit with temperature compensation function includes: a power converter, an input voltage sense circuit, an output adjustment circuit and a charging control circuit. The power converter converts an input voltage supplied from a photovoltaic power module to an output voltage. The input voltage sense circuit generates a signal related to the input voltage according to the input voltage. The output adjustment circuit generates an output adjustment signal according to the signal related to the input voltage. The charging control circuit generates a control signal according to the output adjustment signal, thereby adjusting a level of an output current supplied from the power converter. When a level of the input voltage is smaller than a predetermined voltage threshold, the power converter decreases the output current.

Abstract: A hybrid battery charger is disclosed that includes a linear charger circuit for providing vehicle starting current and battery charging and a high frequency battery charging circuit that provides battery charging current. The linear charger circuit and the high frequency battery charging circuits are selectively enabled to provide vehicle starting current, maximum charging current and optimum efficiency.

Abstract: A battery management circuit and method for managing a power supply and one or more battery strings includes a current sensing circuit and a battery measurement circuit. The current sensing circuit is configured to: receive a current signal from at least one of the battery strings at a first terminal of the current sensing circuit; measure a magnitude of the current signal; and provide a current sensing signal indicative of the magnitude of the current signal at a third terminal of the current sensing circuit. The battery measurement circuit is configured to: receive a current sensing signal at a third terminal of the battery management circuit; measure one or more characteristics of the at least one of the battery strings; and provide a power supply control signal at a first terminal of the battery measurement circuit.

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: The present disclosure includes a method that includes receiving, via a processor disposed within a lithium ion battery module, a voltage signal associated with a resistor coupled to a negative terminal of the lithium ion battery module. The negative terminal of the lithium ion battery module is coupled to a negative terminal of a lead acid battery module. The method also includes determining, via the processor, one or more properties associated with the lead acid battery module based on the voltage signal.

Abstract: An electric vehicle (EV) charging system includes a number of output connections (e.g., cables). Each of the output connections is connected to at least one head, and each head can be connected concurrently to an EV. A charging current is directed to a first one of the output connections if a first EV is connected to a head connected to the first one of the output connections. Then, the charging current to the first one of the output connections can be stopped, switched to a second one of the output connections, and restarted if a second EV is connected to a head connected to the second one of the output connections. A graphical user interface (GUI) is rendered on the display of a computer system. The GUI includes elements that indicate which output connection of the charging station is receiving a charging current.

Abstract: A system may include an adapter, a charger, and a connector. The adapter is configured to receive an alternating current (AC) signal and generate an adapter signal, the adapter signal being generated based on an up-conversion of the AC signal. The charger is configured to generate a direct current (DC) signal from the adapter signal using one or more energy storage elements and supply the DC signal to a load, in which the adapter signal has a voltage greater than that of the DC signal. The connector is configured to couple the adapter and the charger. In some aspects, the adapter signal is adjusted based on one or more measurements of the DC signal at an output of the charger to maintain a target power for charging the load.

Abstract: A motorized personal transport controller and charging port for conveniently charging electronic devices includes a control housing having a top side, an outer perimeter, and a bottom side. The top side, the outer perimeter, and the bottom side form an inner cavity. The control housing is configured to be coupled to a motorized personal transport. A plurality of controls is coupled to the control housing and is configured to control the motorized personal transport. A charging means is coupled to the control housing. The charging means is configured to be in operational communication with a battery of the motorized personal and to charge a plurality of personal electronic devices.

Abstract: A charging connector includes a first electrical socket and a second electrical socket. A first sleeve and a second sleeve are provided, such that the first sleeve is concentrically coupled to the first electrical socket and the second sleeve is concentrically coupled to the second electrical socket. A manifold assembly is adapted to enclose the first and second electrical sockets and the first and second sleeves, such that the first and second sleeves and the manifold assembly create a hollow interior space there between. An inlet conduit and an outlet conduit within the manifold assembly such that inlet conduit, the interior space, and the outlet conduit together create a fluid flow path.

Abstract: A battery management system (BMS) manages a battery using a master device, a sub-master device corresponding to each of battery packs, and a slave device corresponding to each of battery cells. Data is transmitted from the master device through the sub-master device to the slave device using an electrical signal, and the data includes a control message for controlling a battery cell. Data transmitted from the slave device through the sub-master device to the master device using an optical signal, and the data includes information associated with a battery cell acquired in the slave device.