Abstract: An embodiment of the present disclosure discloses a wireless charging device comprising a wireless receiving module, a controller, a first charging module, and a second charging module. The wireless receiving module is configured to receive a wireless charging signal in response to the wireless charging device being in a wireless sensing area, transmit a state indication signal to the controller, receive a charging indication signal from the controller, and determine whether to transmit the wireless charging signal to the first charging module according to the charging indication signal.

Abstract: In a portable device, a first battery has a positive terminal coupled to, through a first switch, an interface used to receive input power, and a negative terminal coupled to a reference terminal. A second battery has a positive terminal coupled to the interface, and a negative terminal coupled to the reference terminal through a second switch, and to the first battery's positive terminal through a third switch. A control circuitry controls the switches such that the device has multiple operation modes including at least a one-battery charging mode and a two-battery-in-series charging mode. In the one-battery charging mode, the circuitry turns off the third switch, and controls the other switches such that one battery is charged by the input power. In the two-battery-in-series charging mode, the control circuitry turns on the third switch and turns off the other switches, such that two batteries are charged by the input power.

Abstract: The present disclosure is directed to a battery charger for charging a connected battery pack. The battery charger is capable of determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value. The present disclosure is also directed to a method of charging a battery pack. The method includes determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value.

Abstract: Apparatuses and systems are provided for improving wireless power transmission for mobile devices. An enclosure for a mobile device may include a first electrical coil configured to establish a first wireless coupling with a transmitter coil of a power supply and a second electrical coil configured to establish a second wireless coupling with the first electrical coil and to establish a third wireless coupling with a receiver coil of a mobile device. A distance between the receiver coil and the transmitter coil may exceed a range over which the transmitter coil may be able to transfer power to the receiver coil via a single wireless coupling between the transmitter coil and the receiver coil. The first wireless coupling, the second wireless coupling, and the third wireless coupling, when established, may enable the transmitter coil to perform a wireless power transfer to the receiver coil.

Abstract: Systems for a current limiting circuit are provided. Aspects include a first set of batteries coupled to a battery terminal, a power converter coupled to a power converter terminal, wherein the battery terminal is coupled to the power converter terminal, a first current limiting circuit in series with the first set of batteries, wherein the current limiting circuit comprises a first circuit comprising a first transistor in series with a first diode, a second circuit comprising a second transistor in series with a second diode, a first RL circuit, wherein the first RL circuit, the first circuit, and the second circuit are arranged in parallel, a controller configured to operate the first current limiter in a plurality of modes including a battery discharge mode including the controller operating the first transistor in an off state, and operating the second transistor in a switching state.

Abstract: A portable charging case, including an unlocking assembly and a push rod, user can push the unlocking assembly in the direction towards the storage space after the portable lighting device is fully charged. The push rod then pushes the magnetic charging device away from the portable lighting device so that the magnetic charging device disconnects from the portable lighting device. Users can take the portable lighting device out from the charging case more quickly and easily, thereby enhancing user experience for using the charging case.

Abstract: An on-board charger is provided with a first stage for converting an alternating current (AC) voltage from an external power supply to a direct current (DC) voltage. A capacitor is coupled to the first stage to receive the DC voltage and to provide a DC-Link voltage. A second stage is coupled to the capacitor to boost the DC-Link voltage and to supply the boosted DC-Link voltage to charge a battery. A processor is programmed to adjust the DC-Link voltage between a first setpoint and a second setpoint based on a battery voltage value.

Abstract: The power conditioner determines possible total power and working individual power to be in a range that possible individual power of each of the power supply units is not exceeded. The possible total power is determined from the possible individual power, of each of the power supply units, determined based on the battery information detected by each of the unit controllers, collected by a master controller from each of the unit controllers. The working individual power is determined based on a power deviation indicating a difference of charging and discharging power between the power supply units. The power conditioner causes charging and discharging of each of the power supply units within the calculated working individual power.

Abstract: Various embodiments of a battery charging apparatus are disclosed, along with methods of charging and rejuvenating a battery using the apparatus. The apparatus may include a positive electrode and a negative electrode which are configured to connect to a battery, and a charging current generator generating a charging current that charges the battery for a period of time via the positive and and negative electrodes by adding electric charge to the battery. The charging current is generated based on parameters of the battery, including a charging constant and an initial charging state. In some embodiments, a natural logarithm of a ratio of the added electric charge to the initial charging state substantially equals to a product of the charging constant and a length of the period of time and negative one.

Abstract: A charging system includes: an interface configured to removably and electrically couple to an external battery; a connector configured to removably and electrically couple to an on-board diagnostic (OBD) port of a vehicle; charge management circuitry electrically coupled to the interface and the connector; and a microcontroller unit (MCU) coupled to the charge management circuitry. The MCU is configured to execute computer readable program code for managing an output of current from the external battery to a vehicle battery of the vehicle through the electrical coupling of the connector and the OBD port. The charging system can be used to prevent a vehicle battery from becoming discharged during extended periods of storage.

Abstract: A charging pile includes a plurality of charging guns and a single heat dissipation module. The plurality of charging guns is connected to the heat dissipation module for heat dissipation via heat exchange. A power distribution system for the charging pile includes: a power module for supplying power to the plurality of charging guns; a control unit connected to the power module and the heat dissipation module for determining an output current of each charging gun depending on the maximum heat dissipation power PlossMax of the heat dissipation module and the maximum heat loss PchargerMax of each charging gun when the plurality of charging guns charge simultaneously; and a power distribution unit connected to the power module and the control unit for distributing the power supplied by the power module to a device through a charging gun connected thereto depending on the output current of that charging gun.

Abstract: A battery charger system includes multiple power channels to accommodate multiple battery chargers through a power input port. Each power channel includes a power outlet electrically coupled to the power input port through a relay. Each power channel further includes a current sensor. A controller is configured to estimate current in each of the power channels using the sensor signals, and configured to control the relays. The battery charger system is configured to provide power to the outlets by closing the corresponding relays, until the total current estimate is more than a maximum current limit, at which point the controller is configured to open the most recently closed relay. The controller is further configured to sequentially close remaining relays after the total current drops sufficiently, while maintaining the total current below the maximum current limit.

Abstract: A battery quick-change device of a portable power station includes a power station housing and several detachable batteries; the power station housing has several battery compartments for accommodating the several detachable batteries; each of the several battery compartments is provided with a compartment opening and a first connector located in a respective battery compartment; each of the several detachable batteries is provided with a second connector capable of being inserted into the first connector; each of the several detachable batteries is assembled into a respective battery compartment through the compartment opening, and the second connector is inserted into the first connector; and the several detachable batteries when assembled into the several battery compartments are electrically connected in parallel.

Abstract: An electrical architecture includes multiple nodal controllers, at least two power sources, and a power supply network. Each nodal controller includes at least one output port configured to be connected to an electrical load operating with a voltage of multiple different voltages. The at least two power sources are associated with the multiple different voltages and configured to supply the multiple nodal controllers through the power supply network. The power supply network includes a power line connecting the multiple nodal controllers to each other in a ring and is configured to supply the multiple nodal controllers with electrical power from the at least two power sources. Each nodal controller of the multiple nodal controllers is linked to the power line via a bidirectional DC/DC converter and is configured to control a sleep or a wake-up mode responsive to detection of a corresponding voltage transition within the power supply network.

Abstract: The application relates to battery internal resistance detection device and method for power conversion device. The detection device includes a data acquisition module for acquiring a battery voltage and a battery current to obtain a DC voltage, an AC voltage, a DC current and an AC current, a first calculation module for receiving the AC current and the AC voltage at a certain instant to output a first internal resistance value and a battery capacitance, a second calculation module for receiving a plurality of DC currents and a plurality of DC voltages at multiple instants and the battery capacitance to output a second internal resistance value, and a selection module for receiving the first and second internal resistance value and selecting one of the first and second internal resistance value as battery internal resistance value. The application improves detection accuracy of battery internal resistance by combining DC and AC algorithms.

Abstract: Battery charging in a battery charging system (BCS) involves measuring an output voltage of a battery connected to the BCS and determining an output voltage type of the battery. The battery is also evaluated to determine a condition of the battery for accepting a charge. Based upon the evaluation the BCS performs can automatically initiate a charge cycle for the battery in accordance with the battery output voltage type which has been determined. The BCS can also trigger an indication that the battery is not in condition for accepting a charge. A range of output charging voltages is produced using a transformer, and a switch network.

Abstract: An enhanced conductivity battery device for use in a battery jump starting device. The enhanced conductivity device providing enhanced conductivity from the enhanced conductivity device to a battery being jump started.

Abstract: A method controls a charging or discharging current of a removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, using a first monitoring unit integrated in the removable battery pack and a further monitoring unit integrated in the electrical device. The method includes monitoring a defined control potential of a signal or data contact between the removable battery pack and the electrical device using the further monitoring unit.

Abstract: A power supply device includes a plurality of battery modules, the battery modules are connected to one another in series according to a gate driving signal from a controller, the power supply device delays the gate driving signal in a gate driving signal processing circuit included in each of the battery modules, and thereafter, transmits the gate driving signal from an upstream to a downstream of the series connection, and the power supply device controls the battery modules by superimposing a control signal for the battery module on the gate driving signal.

Abstract: An electronic device configured to operate in a plurality of power modes includes a power receiving circuit receiving wireless power from an power transmitting device; and a processor configured to control an operation of the electronic device, wherein the plurality of power modes include a power charging mode in which the wireless power is continuously provided, a power hold mode in which a state where the wireless power is provided and a state where the wireless power is cut off are periodically repeated in a ping period, and a power cutoff mode in which the wireless power is cut off, wherein the power receiving circuit generates a ping flag signal alternates between a high level and a low level with the ping period in the power hold mode, and changes the power mode based on a counting value obtained by counting particular level sections of the ping flag signal.