Abstract: A device may cause constant voltage pulse charging of a battery by a battery charger. The device may determine a first voltage value associated with the battery and may cause, based on the first voltage value satisfying a voltage value threshold, the constant voltage pulse charging of the battery to pause for a first period of time. The device may determine, after the first period of time, a second voltage value associated with the battery and may cause, based on the second voltage value satisfying the voltage value threshold, the constant voltage pulse charging of the battery to pause for a second period of time. The device may determine, after the second period of time, a third voltage value associated with the battery and may cause, based on the third voltage value satisfying the voltage value threshold, the constant voltage pulse charging of the battery to cease.

Abstract: A method selects one or a plurality of sets of values characterizing an electric power of a power source capable of powering a device coupled to the power source via a connection interface. The selection is carried out according to values, characterizing the power supplied by the power source, measured at the connection interface.

Abstract: Provided are battery management apparatuses and methods. The battery management apparatus includes a converter configured to acquire and convert information of a battery cell, an antenna configured to transmit the converted information to an adjacent battery cell and to receive converted information of the adjacent battery cell, in response to a command of a controller, and a coil configured to wirelessly charge or discharge the adjacent battery cell, in response to another command of the controller, wherein the controller is configured to control the wireless charging or the wireless discharging based on information of the adjacent battery cell.

Abstract: A rapid charging method and a system for a mobile terminal are provided, which are capable of increasing charging current and dissipating heat. The method includes communicating a controller of the mobile terminal with the charging accessory through a Type-C interface after the mobile terminal detects that the charger is connected to an electric power supply; turning on a load switch by the controller, so that the microcontroller controls a first charging integrated circuit (IC) to start charging, and the controller controls a second charging IC of the mobile terminal to start charging; and stopping charging of the second charging IC of the mobile terminal, and charging the first charging IC of the charging accessory until power of the battery is full when a charging current gradually decreases to a threshold.

Abstract: Methods and systems for depassivating completion tool batteries are provided. In one embodiment, the methods comprise: providing a completion tool disposed within a wellbore penetrating at least a portion of a subterranean formation, wherein the completion tool is electrically coupled to an at least partially passivated lithium battery; depassivating the at least partially passivated lithium battery in the wellbore by discharging the lithium battery; and powering the completion tool with the at least partially depassivated lithium battery.

Abstract: A smart charging method can supply a charging device with power, and the charging device includes charging regions disposed inside thereof, and each charging region includes sockets for charging mobile electronic devices. The charging device includes a control circuit to perform automatic charging control on the mobile electronic devices plugged into the charging regions. During process of the automatic charging control, inrush current is filtered out, and when the total current required by at least two charging regions is higher than a maximal current supply value, the at least two charging regions take turn to charge for a first charging period; otherwise, the charging regions satisfying the condition, and remaining charging region can take turn to charge for a second charging period until the mobile electronic devices are fully charged. The smart charging method can filter out inrush current and effectively increase the charging efficiency.

Abstract: An electronic timepiece includes a secondary battery, a first power feeder, a second power feeder, and a processor. The first power feeder feeds power to the secondary battery. The second power feeder feeds power to the secondary battery at a current larger than a current fed by the first power feeder. The processor determines remaining power of the secondary battery based on different references that are a reference of when the first power feeder is feeding the power to the secondary battery and a reference of when the second power feeder is feeding the power to the secondary battery.

Abstract: The invention relates to a method for combined use of various batteries, and belongs to the technical field of batteries. The method comprises the steps: setting a full-charge reference capacity of batteries; selecting the batteries meeting the capacity requirement selected from a battery set to form a new battery set, and then forming a set including various batteries; selecting battery modules to form a set; and adjusting the state of charge of the selected battery modules, and then connecting the battery modules in series for use. As a supplement to existing usage methods, the management method for combined use of various batteries can fulfill safe and reasonable series use of different types of batteries, and lithium ion batteries are used more effectively.

Abstract: A fast charging station, battery system and method for charging battery systems can be applied to most battery types in use for electric vehicles (EVs), electronic devices, and wireless electrical machines. The system provides for two or more charging ports in the electronic device, such as an EV, that may be able to receive and recognize a charging type, such as charging voltage, current and the like, and provide directed charging to multiple battery sub-packs that make up the entire battery. By charging sub-packs in parallel, the charge time can be substantially reduced. The system further provides a charging station with two or more electrical connections provided at each stall, providing for fast charge of an electrical device, such as an EV, positioned at each stall.

Abstract: A modularized extendable battery changing station device and a charging rack are disclosed, which belong to the technical field of electric vehicle battery charging and swapping. The present technical solutions aim to the solve problems of occupying a large area, a low modularity degree and poor extendibility of the existing battery changing station. For this purpose, the battery changing station device provided in the present technical solutions comprises a charging rack and a battery transfer device; the charging rack comprises at least a battery storage module, the battery storage module being able to realize the storage and charging of a battery, and the battery transfer device being able to pass through the battery storage module. The extendable battery changing station device provided in the technical solutions is able to integrate the functions of power battery transfer, storage and charging.

Abstract: Embodiments herein describe methods and systems for controlling the power state of a tool. A tool is placed into an active mode upon initial power up, as typically indicated by one or more indicators. The tool is automatically placed into an inactive mode upon the expiration of a timer, if the tool motor was not activated. If the tool is activated, such as by pressing the tool switch, prior to expiration of the timer, the timer resets. A display is provided to signal the user as to the current active status and/or current mode of the tool.

Abstract: A wireless power transmitting device for wirelessly transmitting power to an electronic device is provided. The wireless power transmitting device includes a first coil configured to have a first number of windings and to receive power to be transmitted to the electronic device, thereby generating a magnetic field; and a second coil configured to have a second number of windings, which is different from the first number of windings, wherein an induced electromotive force generated, based on the magnetic field generated from the first coil, in the second coil is used for operation of at least one hardware component of the wireless power transmitting device, and wherein a ratio of a voltage applied to the first coil to a voltage applied to the second coil is determined by a ratio of the first number of windings to the second number of windings.

Abstract: Disclosed is an electronic device including a battery; a temperature sensor; a charging circuit configured to charge the battery; a coil antenna; and at least one processor configured to measure a temperature corresponding to at least a part of the electronic device by using the temperature sensor; charge the battery depending on a first charging characteristic by using the charging circuit and supply a current to the coil antenna to allow the coil antenna to emit heat, when the temperature satisfies a first specified condition; and charge the battery depending on a second charging characteristic by using the charging circuit, when the temperature satisfies a second specified condition, after the current is supplied.

Abstract: Various embodiments provide battery packs. A battery pack includes: a battery including at least one battery cell and configured to be discharged at a first discharge current or a second discharge current; and a switch connected to the battery and placed on a high current path through which charge current and discharge current of the battery flow, wherein when the discharge current of the battery is the first discharge current, discharging of the battery is stopped as voltage of the battery reaches a first discharge cut-off voltage, and when the discharge current of the battery is the second discharge current, discharging of the battery is stopped as the voltage of the battery reaches a second discharge cut-off voltage, wherein the first discharge current is greater than the second discharge current, and the first discharge cut-off voltage is greater than the second discharge cut-off voltage.

Abstract: Methods, systems, and devices for protecting a wireless power transfer system. One aspect features a sensor network for a wireless power transfer system. The sensor network includes a differential voltage sensing circuit and a current sensing circuit. The differential voltage sensing circuit is arranged within a wireless power transfer system to measure a rate of change of a voltage difference between portions of an impedance matching network and generate a first signal representing the rate of change of the voltage difference. The current sensing circuit is coupled to the differential voltage sensing circuit and configured to calculate, based on the first signal, a current through a resonator coil coupled to the wireless power transfer system.

Abstract: An electronic device comprises a connector that receives power supplied from a power supply apparatus, a charging unit that charges a battery using power received from the power supply apparatus, and a testing unit that tests a power supply capability of the power supply apparatus by passing current supplied from the power supply apparatus to a load unit in a state where receiving power from the power supply apparatus is limited by the charging unit.

Abstract: A charging device is provided. The charging device includes an output terminal unit connected to an input terminal unit of a battery pack. The output terminal unit includes a terminal body including an output terminal connected to the input terminal unit and a terminal cover which covers the output terminal before the input terminal unit of the battery pack is connected to the output terminal unit and through which the output terminal passes while the input terminal unit of the battery pack is connected to the output terminal unit.

Abstract: Provided is a resonance converter for a wireless charger, which includes a full bridge inverter connected to an input power source that supplies an input voltage and having first to fourth switches, a resonance tank having a plurality of resonators composed of capacitors and coils connected in series and configured to receive the input voltage from the full bridge inverter and perform voltage conversion in an inductive power transfer manner among the plurality of resonators, and a rectification bridge configured to rectify an output voltage sent from the resonance tank and transfer the rectified output voltage to a battery.

Abstract: An electronic module includes wireless data transmission circuitry configured to receive from a base station a signal corresponding uniquely to a battery device, wireless charging circuitry coupled with the wireless data transmission circuitry and configured to receive energy wirelessly transmitted from the base station, and a controller configured to, in response to the wireless data transmission circuitry receiving the signal, cause the wireless charging circuitry to charge a battery module of the battery device corresponding to the signal using the received wirelessly transmitted energy.

Abstract: A tablet charging cabinet includes a storage space having a base, a top wall, two opposed side walls, and a back wall, and a plurality of angled partition panels defining a plurality of storage and charging compartments at different elevations therein, each compartment having a respective connector at the back of the respective panels. Each connector is configured for providing power supply and network connection to a respective electronic device connected thereto. At least two alignment posts located on two sides of each connector to facilitate alignment of an electronic device to a respective connector. Each partition panel is configured to have an opening to allow a charging indicator light of an electronic device to be visible from outside the cabinet. The plurality of partition panels are angled downward toward the back wall to facilitate connection of an electronic device to a respective connector.