Abstract: An energy storage system including an energy storage string formed by rechargeable cells connected in series and an energy management device including a master control unit and at least a first local control unit associated to a first rechargeable cell. A storage string connecting circuit is coupling a positive string terminal with a negative string terminal and a cell connecting circuit is coupling a positive and a negative cell terminal of the first rechargeable cell. The storage string connecting circuit includes a first capacitor device forming with the energy storage string a first closed-loop LC-circuit, and/or the cell connecting circuit includes a second capacitor device forming with the first rechargeable cell a second closed-loop LC-circuit. A master AC signal generator and a local signal generator are configured for generating a first and a second AC pulse in respectively the storage string connecting circuit and the cell connecting circuit.

Abstract: A method of providing energy storage units to an energy storage system on a vessel adapted to use stored energy includes receiving notification at a charging station onshore, of a user energy storage requirement; dispatching an autonomous vehicle from the charging station with one or more replacement energy storage units for the system; removing one or more used energy storage units from an operational location of the system; inserting the replacement energy storage unit at the same operational location of the system; and returning the used energy storage unit to the charging station.

Abstract: Systems and methods for dynamically charging energy storage devices connected to a power grid or other power system are provided. Charging decisions for charging the energy storage devices may be optimized, for example by basing the decisions on historical data, to provide more efficient or effective charging and use of power. The historical data may include an amount of energy previously discharged by each of the energy storage devices, a previous charging decision for each of the devices, a previous total fixed load power request of the power grid, and/or a pervious amount of power received by the power grid, which may include power received from intermittent power sources. In some aspects, the present techniques do not require current system state information or explicit predictions of future intermittent power availability. In some aspects, charging decisions are based on a solution to an online optimization problem.

Abstract: An electronic device is provided. The electronic device includes a housing, a battery included within the housing, a connector electrically connected to an external power supply device including an integrated circuit (IC) and exposed to a part of the housing, and a power management unit included within the housing and electrically connected to the connector, wherein the power management unit is configured to communicate with the IC of the external power supply device, and wherein the connector is configured to receive a first current of a first current value during at least a part of the communication and to receive a second current of a second current value greater than the first current value during at least a part in which the communication is not performed.

Abstract: The disclosure provides a method for controlling a charging current of an electric vehicle and a charging device. The controlling method includes: sampling current temperature of the charging connection node; generating a current regulation amount according to the current temperature and a preset target temperature threshold; and regulating the charging current flowing through the charging connection node according to the current regulation amount.

Abstract: A battery pack disclosed herein is configured to be attached to a battery pack mount by moving the same downward with respect to the battery pack mount and be detached from the battery pack mount by moving the same upward with respect to the battery pack mount. The battery pack comprises a casing. The casing includes a first guide groove and a second guide groove on a side surface of the casing in a left-right direction, with the first and second guide grooves each extending upward from a lower end of the side surface. A length of the first guide groove in an up-down direction and a length of the second guide groove in the up-down direction are different.

Abstract: A system includes a first sense circuit configured to provide a first output representative of sensed current provided by a first battery coupled to a first load. A second sense circuit is configured to provide a second output representative of sensed current provided by a second battery coupled to the first load. An input current controller is coupled to receive the respective first and second outputs and to couple between the second battery and the first load to control the current provided by the second battery.

Abstract: One embodiment provides a battery pack including a housing, a plurality of battery cells supported by the housing, and a terminal block. The terminal block is configured to be coupled to a power tool to provide operating power from the plurality of battery cells to the power tool. The terminal block has a positive power terminal, a charging terminal, and a ground terminal. The battery pack also includes a charging circuit provided between the charging terminal and the plurality of battery cells. The charging circuit is configured to receive and transfer charging current above 12 Amperes to the plurality of battery cells during charging. The charging circuit includes a charging switch and a fuse coupled between the charging terminal and the charging switch.

Abstract: A method of providing an auxiliary power by an auxiliary power supply. The method may include converting an external power to a plurality of charging voltages; charging a charging circuit with a first charging voltage of the plurality of charging voltages; monitoring a voltage of the charging circuit; when capacitance of the charging circuit is less than a first reference capacitance, charging the charging circuit with a second charging voltage of the plurality of charging voltages, the second charging voltage being higher than the first charging voltage by a first voltage amount; and providing an auxiliary power to outside the auxiliary power supply. The auxiliary power may be generated based on the voltage of the charging circuit.

Abstract: One embodiment provides a battery pack including a housing, a plurality of battery cells supported by the housing, and a terminal block. The terminal block is configured to be coupled to a power tool to provide operating power from the plurality of battery cells to the power tool. The terminal block has a positive power terminal, a charging terminal, and a ground terminal. The battery pack also includes a charging circuit provided between the charging terminal and the plurality of battery cells. The charging circuit is configured to receive and transfer charging current above 12 Amperes to the plurality of battery cells during charging. The charging circuit includes a charging switch and a fuse coupled between the charging terminal and the charging switch.

Abstract: A dual-battery charging and discharging method is described to be used for a dual-screen terminal. The method includes: obtaining a state identifier of the first display screen and a state identifier of the second display screen; determining whether the dual-screen terminal is in a charging state; in response to determining that the dual-screen terminal is in a charging state, controlling the first battery and the second battery to be charged according to the state identifier of the first display screen and the state identifier of the second display screen; and in response to determining that the dual-screen terminal is not in a charging state, controlling whether the first battery and the second battery supply power to the dual-screen terminal according to the state identifier of the first display screen and the state identifier of the second display screen.

Abstract: UPS systems, methods, and computer-readable mediums utilizing electromechanical bypass relays to switch from an on-line mode of operation to a green/bypass mode of operation include control logic to adaptively adjust the timing of when an inverter of a UPS turns off to prevent backfeeding a utility. After the UPS is instructed to transition from the on-line mode to the green mode, a monitoring period begins. During the monitoring period, a parameter related to the output current of the inverter is monitored and compared to a predetermined threshold. If the parameter exceeds the predetermined threshold before a fixed period time has elapsed, the inverter is turned off early. If the inverter current does not exceed the predetermined value within the fixed period of time, the inverter is turned off.

Abstract: Provided are a battery quick charging method, a charging apparatus, and a device to-be-charged. The battery quick charging method includes the following. State parameters of a battery of a device to-be-charged are acquired, where the state parameters of the battery include a present temperature of the battery. A charging cut-off voltage corresponding to the present temperature is selected from a target parameter mapping relationship, where the charging cut-off voltage is higher than a rated voltage of the battery. Constant-current charging is performed on the battery until a voltage of the battery reaches the charging cut-off voltage and then performing of the constant-current charging on the battery is stopped.

Abstract: An electronic device is provided. The electronic device includes a housing, a battery included within the housing, a connector electrically connected to an external power supply device including an integrated circuit (IC) and exposed to a part of the housing, and a power management unit included within the housing and electrically connected to the connector, wherein the power management unit is configured to communicate with the IC of the external power supply device, and wherein the connector is configured to receive a first current of a first current value during at least a part of the communication and to receive a second current of a second current value greater than the first current value during at least a part in which the communication is not performed.

Abstract: Fluctuations in the battery life of a plurality of storage batteries are reduced. A DC power supplying system includes power conditioners that supply generated power of power generators to a DC bus, converters that perform voltage conversion on a bus voltage and supply load power to load appliances, bidirectional converters that execute charging operations that charge storage batteries and discharging operations that discharge the storage batteries, and an energy management system that causes the converters to execute a charging operation when the generated power exceeds the load power and to execute a discharging operation when the generated power is below the load power. During a charging operation, the energy management system applies a first voltage-current characteristic that linearly increases the charging current in keeping with an increase in the bus voltage to each bidirectional DC/DC converter with a slope in keeping with the SOC of a storage battery.

Abstract: The present disclosure provides a battery charging apparatus and a battery charging protection control method. A power adapter in the battery charging apparatus performs data communication with a charging control circuit; when the power adapter determines that overvoltage and/or overcurrent occurs in the direct current output by a communication interface of the power adapter, the power adapter notifies the charging control circuit to drive a controller in the electronic device to switch off a communication interface of the electronic device and switches off the direct current output automatically; when the charging control circuit determines that overvoltage and/or overcurrent occurs upon receiving output voltage and output current of the power adapter, the charging control circuit notifies the power adapter to switch off the direct current output and drives the controller in the electronic device to switch off the communication interface of the electronic device.

Abstract: A power supply apparatus includes a power supply unit configured to wirelessly supply power to an electronic apparatus, a communication unit configured to transmit, to the electronic apparatus, information indicating whether to perform a foreign object detection process for detecting a foreign object, and a control unit configured to cause the communication unit to transmit the information to the electronic apparatus before outputting of predetermined power to the electronic apparatus.

Abstract: Embodiments of the present invention relates to a charging device (and a charging method), the charging device for charging a battery pack, the battery pack being detachably mounted on a power tool to provide power to the power tool, wherein the charging device comprises: a parameter detecting unit configured to detect a parameter related to a charging current for the battery pack, the parameter comprising a temperature of the battery pack; and a control unit configured to adjust the charging current for the battery pack according to output of the parameter detecting unit to prevent the temperature of the battery pack from reaching a first preset temperature, wherein when the temperature of the battery pack reaches the first preset temperature, the battery pack enters an over-temperature protection state, thereby preventing a life of the battery pack from being affected, By adjusting the charging current, the present invention can not only ensure that the battery pack does not enter over-temperature protectio

Abstract: A method for improving a lifetime property and a charging rate of a lithium-sulfur secondary battery capable of both improving a lifetime property and a charging rate of the secondary battery by inducing a homogeneous reaction of the lithium-sulfur secondary battery by applying a charging rate differently for each section in a charging process of the lithium-sulfur secondary battery.

Abstract: A method of controlling a plurality of batteries and an electronic device to which the same is applied. The electronic device includes a housing and a plurality of batteries. The electronic device also includes a power management module, a plurality of current limiting ICs, and a processor operationally connected to the plurality of batteries, the power management module and the plurality of current limiting ICs. The processor is configured to sense a sum of the currents flowing into the plurality of batteries or a voltage of the power management module, perform a primary end of reducing a magnitude of the sum of the currents flowing into the plurality of batteries, sense the currents or voltages of the plurality of batteries, and perform a secondary end of blocking a current flowing into a battery.

Abstract: A charge and discharge control device of a battery charges the battery with a constant current in a constant current mode. When the voltage of the battery corresponds to an end-of-charge voltage, the charge and discharge control device converts the constant current mode to a constant voltage mode and thereby charges the battery with a constant voltage. The end-of-charge voltage is set as a first end-of-charge voltage minus a negative electrode threshold potential from the full-charge voltage of the battery, and the negative electrode threshold potential is a potential value of the negative electrode where a negative electrode active material contained in the battery causes a phase change.

Abstract: Various embodiments of the present technology may provide methods and apparatus for a battery. The apparatus may compute an ideal energy capability of the battery and an actual energy capability of the battery. The apparatus may compare the energy capabilities and determine whether to supply current to a load according to a default duty cycle or an adjusted duty cycle. The apparatus may provide an adjusted duty cycle by increasing the pulse width of the duty cycle or increasing the total period of the duty cycle.

Abstract: A power supply circuit, a power supply apparatus, and a control method are provided. The power supply circuit includes a primary unit, a modulating unit, a transformer, a secondary rectifier-filter unit, a voltage feedback unit, and a control unit. The control unit of the power supply circuit is configured to communicate with a device to-be-charged to adjust output power of the power supply circuit, to make at least one of output voltage and output current of the power supply circuit match a present charging stage of a battery of the device to-be-charged, and control the output voltage thereof within a first voltage range or a second voltage range.

Abstract: A surface cleaning apparatus includes a floor cleaning unit and a portable surface cleaning unit. The floor cleaning unit includes a surface cleaning head and an upper section moveably mounted to the surface cleaning head between an upright storage position and a rearwardly inclined floor cleaning position. The portable surface cleaning unit is connectable to the floor cleaning unit, and includes a portable surface cleaning unit air inlet connectable in air flow communication with the floor cleaning unit, a main body, an air treatment member, a suction motor, a handle and a capacitor. A remote charger is provided wherein the capacitor is rechargeable at a rate of at least 4 C.

Abstract: A surface cleaning apparatus includes a floor cleaning unit and a portable surface cleaning unit. The floor cleaning unit includes a surface cleaning head having a charger and an upper section moveably mounted to the surface cleaning head between an upright storage position and a rearwardly inclined floor cleaning position. The portable surface cleaning unit is connectable to the floor cleaning unit, and includes a portable surface cleaning unit air inlet connectable in air flow communication with the floor cleaning unit, a main body, an air treatment member, a suction motor, a handle and a capacitor, wherein the capacitor is rechargeable at a rate of at least 4 C.

Abstract: An electric vehicle disclosed herein may include an AC inlet connectable with an AC power supply outside the vehicle, a main battery, and a power unit. The power unit may be connected to the main battery by a first battery power cable and a second battery power cable, and connected to the AC inlet by an AC inlet power cable. Inside the power unit, the AC inlet power cable may be connected to the second battery power cable via an AC/DC converter. Further, the first battery power cable may be connected to a power cable of a device other than the AC/DC converter.

Abstract: A power sensing and indication circuit includes a first device connector for charging a first device and having a first pin and a second pin, the first pin of the first device connector being connected to an output voltage port of a controller. The power sensing and indication circuit includes a first amplifier. The first amplifier has an inverting input port, a non-inverting input port and an output port. The power sensing and indication circuit includes a first set of multiple photodiodes for emitting light of a first color and a second set of multiple photodiodes for emitting light of a second color. The power sensing and indication circuit includes at least one of a transistor or a digital circuit to cause the first set of multiple diodes to emit light of the first color or the second set of multiple photodiodes to emit light of the second color.

Abstract: The disclosure reduces the occurrence of an inrush current upon electrical connection of a storage cell, allowing immediate use. A power supply apparatus is configured to convert DC power from a solar cell and a storage cell into AC power and includes: a first capacitor disposed between the solar cell and the storage cell; and a controller configured to charge the first capacitor with power from the solar cell or a power grid and, after a first voltage of the first capacitor exceeds a second voltage of the storage cell, to electrically connect the storage cell with the first capacitor.

Abstract: Equalization of the state of health of multiple serial strings of battery cells connected in parallel to a common direct current bus in an energy storage system utilized with a utility-sized renewable energy system or other system where optimum operational battery health is a requirement, and in particular is provided by a separate bi-directional DC-to-DC converter in each serial string that controls the charge and discharge of the multiple serial strings of battery cells to maximize efficiency of the stored energy and also provides galvanic isolation between the direct current bus and the multiple serial strings of battery cells.

Abstract: A surgical room power system including at least one source of power wired to a power source for a surgical room, the at least one source of power being wired to the surgical room; at least one power receiver; and a surgical power consumer wired to the at least one power receiver, the surgical power consumer being configured to assist a surgeon during a surgical procedure on a patient. The at least one source of power wirelessly transfers power to the at least one power receiver for powering the surgical power consumer.

Abstract: A circuit that indicates a warning of low battery life so that an instrument supported by a battery, may have the battery replaced before the battery dies. A switch and series resistor may be connected between the battery and a capacitor. The switch may turn on when the voltage on the capacitor is below a first predetermined voltage limit, and the switch may be turned off when the voltage at the capacitor is above a second predetermined voltage limit. When the switch is on, a voltage on the resistor can be measured and current consumption can be calculated with measured voltage, resistor value and duty cycle of the switch. When the battery is discharged, its internal resistance and then its duty cycle may increase. When the duty cycle hits 100 percent, the battery may be nearly dead but with enough life for the circuit to issue the low battery warning.

Abstract: A charger having a fast transient response and a control method thereof are provided, which decide how to quickly respond to a requirement of a load by determining whether an input current reference signal indicating an input current is larger than or equal to a maximum safe current of a transformer. Therefore, the charger and the control method realize the fast transient response without having to control switching between a boost circuit and a buck circuit. Meanwhile, the charger and the control method thereof can be prevented from being damaged by an excessive input current and can stabilize an output voltage of the load more quickly.

Abstract: A battery charging method includes determining a battery overpotential based on a reference physical quantity and a battery physical quantity corresponding to a charging capacity of a battery while charging the battery in an initial charging step, determining whether a condition for changing a battery charging step is satisfied based on the battery overpotential, and changing the battery charging step from the initial charging step to an adjusted charging step in response to the condition being satisfied.

Abstract: A circuit provides for regulating charge and discharge current of a battery. A bypass circuit is connected to a terminal of the battery and connected in parallel with a load switch. The bypass circuit may selectively direct a bypass current around the load switch. A controller can operate in plural modes to control the bypass circuit. In a first mode, the controller controls one or more parameters of the bypass current based on values corresponding to a current at the terminal, a voltage at the terminal, and/or a temperature of the battery. In a second mode, the controller controls the bypass circuit to disable the bypass current.

Abstract: A battery includes plural battery cells that output a source voltage to power a device, such as an information handling system. A controller of the battery disconnects each battery cell at a predetermined interval for a predetermined time period, such as from a range of between 15 and 60 seconds, while maintaining the source voltage. The predetermined time and interval are selected based upon the load supplied by the battery and an estimated increase in battery output efficiency.

Abstract: A control method for controlling a battery charging circuit having at least one switch, includes: generating a first difference signal based on the difference between a charging current feedback signal and a charging current reference signal; generating a bias reference signal by proportionally integrating the first difference signal when the battery voltage is higher than a first threshold and less than a second threshold; generating a bias signal by proportionally integrating the difference between the sum of the bias reference signal and a system voltage reference signal and a system voltage feedback signal; generating a comparison signal by comparing the sum of the system voltage feedback signal and a ramp signal with the sum of the bias signal and the system voltage reference signal; and generating a control signal for controlling the at least one switch based on the comparison signal and a constant time period control signal.

Abstract: There is provided a battery comprising an electrochemical unit comprising at least one electrochemical cell. The at least one electrochemical cell comprises a cell anode, a cell cathode and an electrolyte in contact with said cell anode and cell cathode. The electrochemical unit further comprises a first contact electrode mounted on a surface of the electrochemical unit. The battery further comprises a second contact electrode positioned adjacent to the electrochemical unit, whereby the first and second contact electrodes face each other to allow a contact resistance between the first contact electrode and second contact electrode to be measured.

Abstract: A method and system are provided for transferring a load between a primary power source and a secondary power source. In accordance with the disclosure, a controller senses, via a sensor, an electrical signal providing power from the primary power source to the load. The controller also detects a non-conforming power event by determining that a parameter of the electrical signal is either more or less than a first threshold value. Responsive to the detection of the non-conforming power event, the controller determines a quantity of non-conforming power events that occur during a first time interval. The controller further can compares the determined quantity of non-conforming power events to a second threshold value. Responsive to the determined quantity of non-conforming power events being either greater or lesser than the second threshold value, the controller initiates a control signal, such as a control signal to initiate a load transfer.

Abstract: An intelligent battery charging system for improving battery safety, battery longevity, and battery charging efficiency. The intelligent battery charging system includes a memory that is arranged to store an intelligent battery controller system. The intelligent battery controller system is executable by a processor and is in communication with a device state sensor, a battery temperature sensor, one or more current sensors, and a battery charge level sensor. The intelligent battery controller system is configured to monitor, via the battery temperature sensor, a temperature of the battery for a mobile device and apply one or more of a plurality of remedial actions to lower the temperature of the battery when a battery temperature above a certain threshold is measured.

Abstract: Embodiments of the present disclosure relate to a method and apparatus for charging a battery pack. The method comprises: detecting voltages of batteries in the battery pack in real time; charging the battery pack with a charging current that is at least based on the detected voltages; and performing, on the batteries in the battery pack, balance charging by a digital discharging signal. A solution according to the present disclosure may reduce the costs and achieve a more flexible and safe charging approach.

Abstract: A method and associated computer program product and system are disclosed. The method comprises, while a battery-operated vehicle is not being charged by a power supply, receiving a first input at a user interface displayed on a computing device. The method further comprises, responsive to the first input, wirelessly transmitting a first control signal to the battery-operated vehicle to control motive operation thereof. The method further comprises, responsive to receiving an indication that the battery-operated vehicle is being charged by the power supply, displaying one or more tasks to be completed using the user interface. The method further comprises receiving a second input at the user interface while the one or more tasks are displayed, and responsive to the second input, wirelessly transmitting a second control signal to operate one or more output devices of the battery-operated vehicle.

Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.

Abstract: A storage battery device, a charging and discharging monitoring method and device thereof and a corresponding system are described. The storage battery device includes multiple storage batteries connected in parallel. A storage battery switching unit connected in series with each storage battery is arranged on a parallel branch circuit where the storage battery is located, and includes a charging control unit configured to switch on or switch off a charging loop of the storage battery and a discharging control unit connected in parallel with the charging control unit and configured to switch on or switch off a discharging loop of the storage battery.

Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.

Abstract: Battery charging systems and the operations thereof are provided. The battery charging systems provide fast charging. The battery charging systems include a charging unit, a battery, a battery management system, and a number of sensors and battery monitors. The battery includes one or more cells. The battery charging systems include a fast-charge profile including a number of stages.

Abstract: A battery charging method includes determining a battery overpotential based on a reference physical quantity and a battery physical quantity corresponding to a charging capacity of a battery while charging the battery in an initial charging step, determining whether a condition for changing a battery charging step is satisfied based on the battery overpotential, and changing the battery charging step from the initial charging step to an adjusted charging step in response to the condition being satisfied.

Abstract: A charger includes: a charging circuit which receives an electric power from external equipment and charges a secondary battery; a control device which determines a power supply capability of the external equipment on the basis of the electric power that is supplied to the charging circuit from the external equipment; and a display device that displays the power supply capability of the external equipment, which has been determined by the control device.

Abstract: In a power control device for a vehicle in which an electric motor for driving the vehicle to travel is supplied with power from a battery mounted on the vehicle and a fuel cell, a control unit sets a target charging rate (SOCt) of the battery in such a manner that the target charging rate decreases as a remaining fuel amount (Qf) of the fuel cell decreases after the power generation of the fuel cell is started during high-output/high-speed travelling and controls a power generation output (Pf) of the fuel cell based on a difference between the target charging rate (SOCt) and a current charging rate (SOC).

Abstract: An example method to reduce data handling on lithium ion battery monitors is provided and includes receiving a request from a micro-controller for data associated with one or more cells, receiving signals corresponding to monitored properties from the cells, calculating derivative properties from the monitored properties, dividing a default data into a plurality of portions, and sending the derivative properties and one of the portions to the micro-controller according to at least a first compute logic option or a second compute logic option. The default data can include cell voltages, auxiliary inputs, stack voltage, reference output voltage, analog voltage output, analog voltage input, temperature, and reference buffer voltage. The default data is provided sequentially to the micro-controller in as many consecutive read backs as the number of portions, where each portion corresponds to the default data measured at a distinct time instant.

Abstract: A method of controlling an electrically heated aerosol-generating system is provided, the system including a charging device including a first rechargeable power supply, and an electrically heated aerosol-generating device configured to receive an aerosol-generating substrate and including a second rechargeable power supply, and at least one electrical heating element; and the method including monitoring an ambient temperature adjacent the charging device, determining a charging current, for charging the rechargeable power supply of the charging device, in dependence on the ambient temperature, and charging the rechargeable power supply of the charging device at the determined charging current. There is also provided a system and device for performing the method.