Abstract: Provided is an output control method of a parallel battery energy storage device including an inverter. More particularly, the present disclosure relates to an output control method, wherein when an external battery is connected in parallel to an inverter equipped with an internal battery and is used, output power is limited depending on a capacity of the external battery, thereby ensuring user safety.

Abstract: A battery control unit includes a plurality of switching units, a first controller, and a plurality of bidirectional voltage converters including a ground terminal, a first, and a second input-output terminal. Each of a plurality of battery packs connected in parallel to each other includes a plurality of batteries connected in series with each other. The plurality of switching units are disposed corresponding to the plurality of batteries respectively, and are configured to switch between a connected state where a corresponding battery among the plurality of batteries is connected in series with non-corresponding battery among the plurality of batteries and a non-connected state where the corresponding battery is disconnected from series connection with the non-corresponding battery.

Abstract: This application is directed to an electronic device powered by one or more rechargeable battery cells. The electronic device includes a first negative temperature coefficient (NTC) thermistor proximate to the battery cells, and an open capacitor coupled in parallel with the NTC thermistor. The open capacitor has an open area and two electrodes that are at least partially exposed via the open area and electrically isolated. The electronic device further includes a control circuit coupled to the NTC thermistor and the open capacitor. The control circuit is configured to detect a voltage drop across the NTC thermistor and the open capacitor if conductive liquid enters the open area of the capacitor and electrically connects the two electrodes that are at least partially exposed via the open area.

Abstract: Induction charging devices equipped with solar panels are described. The charging device may comprise a housing containing at least one induction coil, a circuit board, and at least one solar panel operably coupled to the induction coil and the circuit board. The induction coil may be proximate a first surface of the housing to thereby define an induction area of the first surface. The solar panel may be coupled to or integrated into a second surface the housing such that the solar panel faces outward from the housing, e.g., for exposure to the sun or a source of artificial light. The first surface and the second surface may face in the same direction or opposite directions.

Abstract: A single-stage battery charger system includes a switched capacitor converter coupled between an input power source and a load, an inductor coupled between a midpoint of the switched capacitor converter and the load, and an isolation switch coupled between the midpoint and the load, wherein the isolation switch is configured such that the single-stage battery charger system functions as a multilevel switching charger when the isolation switch is turned off, and the single-stage battery charger system functions as a switched capacitor charger when the isolation switch is turned on.

Abstract: A compact battery and voltage supply controller apparatus for a tattoo machine is disclosed. The battery and controller are configured to connect the battery to the tattoo machine through replaceable internally received magnetic connection adapters. The toggle switch operated display screen provides easy-to-view status and health of the battery and incremental voltage adjustment using a voltage boost circuit and adjustment knob. The internal battery can be replaced and/or removed and recharged.

Abstract: A personal care product system is provided. The personal care product system has a stand that has a first stand permanent docking magnet. A stand inductive charging coil is also positioned within the stand. A handle that has a first handle permanent docking magnet is removably mounted to the stand. A handle inductive charging coil is positioned within the handle. A handle flux guiding member is in close proximity to a surface of the first handle permanent docking magnet to direct a magnetic field away from the inductive charging coils.

Abstract: A battery management system configured to electrically couple to a battery may include a boost converter comprising a plurality of switches arranged to provide a boosted output voltage at an output of the boost converter from a source voltage of the battery and a bypass switch coupled between the battery and the output, wherein the battery management system is operable in a plurality of modes comprising a bypass mode wherein the source voltage is bypassed to the output and when the battery management system is in the bypass mode, at least one switch of the plurality of switches is enabled to increase a conductance between the battery and the output.

Abstract: A power supply for providing an electric pulse to an electrical consumer is shown. The power supply has an input circuit, a storage capacitor, and an output circuit. The input circuit is configured to charge the storage capacitor up to a maximum voltage. The output circuit is configured to provide one or more pulses having a pulse voltage on the basis of a charge stored in the storage capacitor and to compensate for a reduction of the voltage of the storage capacitor by at least 30% down from the maximum voltage. Moreover, the power supply is configured such that the voltage of the storage capacitor is reduced by at least 30% during the generation of one or more pulses.

Abstract: A vehicle charging system for allowing an electric vehicle to automatically recognize the presence of, and communicate to properly equipped public or private wireless electric vehicle charging station(s) in order to automatically effectuate a partial or complete charging sequence at available opportunities in order to attain a fully charged power pack at all or most times. The vehicle charging system being configured to optimize the charging session with virtually any type of electric vehicle capable of wireless charging.

Abstract: A method for coordinating charging processes of electric vehicles. A respective supply signal (S1), with at least data on an available quantity of energy and a current geographic position, is transmitted by mobile supplier units, and a respective demand signal (S2), with at least data on a demanded quantity of energy and a current geographic position, is transmitted by mobile procuring units to a central computer (P2). On the basis of the supply signals (S1) and the demand signals (S2), possible combinations, each composed of a supplier unit and a procuring unit, together with a respective evaluation value, are created by the central computer (P3). Specific combinations are selected by an optimization method (P4), and respective selected combinations and data regarding an energy transfer process are transmitted to the respective supplier units and the respective procuring units of the selected combinations by a coordination signal (S3) (P5).

Abstract: A capacitor pre-charge circuit configured to avoid inrush to a capacitor can include a plurality of components configured to ramp a pre-charge voltage over time up to a voltage maximum such that the a pre-charge voltage-over-time curve is not an asymptote. The plurality of components can be configured to linearly ramp voltage, for example, to the voltage maximum. In certain embodiments, the circuit can include an integrated voltage sense circuit.

Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a receptacle configured to receive power for charging the power supply from a plug connected to an external power supply; a charger configured to control charging of the power supply by power received by the receptacle; and a controller. The receptacle and the power supply are connected in parallel with the charger, and the charger is configured to supply power from the receptacle and the power supply to the controller via the charger.

Abstract: A support stand for mobile devices which may be arranged in multiple configurations to support different devices in different orientations, and which may support a wireless charger. An exemplary embodiment may include a support member for supporting a mobile device which is pivotably connected to a base. One or more arms may be removably connected to the support member. The arms may each be connectable to the support member in a first position in which the arms are parallel to the support member and a second position in which the arms are not parallel (e.g., perpendicular) to the support member. The arms may be interchangeably connected in different positions to support a wide range of mobile devices. A wireless charger may be secured to the support member such that the mobile device may rest upon the wireless charger when supported by the support member.

Abstract: An equalization circuit includes a cell selection circuit that is provided between n cells and an inductor, and that can electrically connect both ends of any cell of the n cells to both ends of the inductor. An energy holding-consuming circuit can form a closed loop including the inductor when the cell selection circuit does not select any cell. The energy holding-consuming circuit also can form a closed loop of a first pattern with a small resistance component of the closed loop and a closed loop of a second pattern with a large resistance component of the closed loop.

Abstract: A device including a first receptacle for receiving a first electronic device, a second receptacle for receiving a second electronic device, a first switching charger for fast charging the first electronic device, and a second switching charger for fast charging the second electronic device. The device may determine that the first electronic device is communicatively coupled to the device within the first receptacle and that the second electronic device is communicatively coupled to the device within the second receptacle. The device may receive a first request from the first electronic device to fast charge the first electronic device via the first switching charger and charge the first electronic device via the first switching charger. Additionally, the device may receive a second request from the second electronic device to fast charge the second electronic device via the second switching charger and charge the second electronic device via the second switching charger.

Abstract: Systems and methods of this disclosure use low voltage energy storage devices to supply power at a medium voltage from an uninterruptible power supply (UPS) to a data center load. The UPS includes a low voltage energy storage device (ultracapacitor/battery), a high frequency (HF) bidirectional DC-DC converter, and a multi-level (ML) inverter. The HF DC-DC converter uses a plurality of HF planar transformers, multiple H-bridge circuits, and gate drivers for driving IGBT devices to generate a medium DC voltage from the ultracapacitor/battery energy storage. The gate drivers are controlled by a zero voltage switching (ZVS) controller, which introduces a phase shift between the voltage on the primary and secondary sides of the transformers.

Abstract: A charging device includes: a power supply circuit including a first inverter connected between a first storage battery and a load, and a second inverter connected between a second storage battery and the load, the power supply circuit being configured to drive the one load; a charging port configured to be connected to an external power supply when the first storage battery and the second storage battery are charged with power from the external power supply; and a relay configured to allow current to bypass the first inverter, the second inverter, and the load between a positive electrode terminal of the charging port and a negative electrode terminal of the charging port, when the first storage battery and the second storage battery are charged with the power from the external power supply.

Abstract: A compact battery and voltage supply controller apparatus for a tattoo machine is disclosed. The battery and controller are configured to connect the battery to the tattoo machine through replaceable internally received magnetic connection adapters. The toggle switch operated display screen provides easy-to-view status and health of the battery and incremental voltage adjustment using a voltage boost circuit and adjustment knob. The internal battery can be replaced and/or removed and recharged.

Abstract: A battery management system is provided. The battery management system includes a controller comprising at least one processor and at least one memory. The at least one memory comprising instructions executed by the at least one processor to receive load information about a load from a load sensor, receive battery operating information from a battery sensor, determine a number of battery modules needed to supply the load and operate each battery module at or below a preferred discharge rate based on the load information and the battery operating information, select a group of battery modules included in the battery based on the number of battery modules and the battery operating information, each battery module included in the group of batteries having a current depth of discharge within the preferred depth of discharge range, and instruct the battery to supply the load using the group of battery modules.