Abstract: A circuit for effectively controlling the process of pre-charging a power capacitor, comprising an integrator circuit consisting of an operational amplifier implementing a voltage dependent current source, the power capacitor is being connected between the output of the integrator and ground; a high side driver connected to the positive input of the integrator via a serial current limiting resistor, for generating control signals provided to the dependent current source, the negative terminal of the driver being connected to the negative input of the integrator; a control capacitor connected between the positive input of the operational amplifier and ground. Upon activating the driver by an activation pulse, the power capacitor is being charged in a constant current determined by the current limiting resistor, until reaching a desired voltage, while the voltage across the power capacitor follows the volage across the control capacitor.

Abstract: A portable electric energy storage system and a power regulation method thereof are provided. The portable electric energy storage system includes a housing, and an inverter and an energy storage battery disposed in the housing, and further includes: a power detector configured to detect a present power Pt of a connected load; a first comparator configured to compare the present power Pt with a rated power Pe of the inverter; a first actuator configured to regulate an output power of the inverter to a first preset power P1 if the present power Pt is greater than the rated power Pe of the inverter; and a second actuator configured to gradually regulate the output power of the inverter to a second preset power P2 after the connected load is driven to start operation or operate for a period of time; or determine whether to stop driving output of the load.

Abstract: Methods and apparatuses are described for use in self-reconfigurable multi-cell batteries. The methods include receiving, by a controller, a communication from an external unit, and reconfiguring a multi-cell battery based on the communication. The external unit includes one of a load and a battery charger. The multi-cell battery includes a plurality of switches and a plurality of battery cores operatively coupled to each other, wherein each battery core includes at least one battery cell. The plurality of switches may be controlled to reconfigure the multi-cell battery based on the communication received from the external unit. The multi-cell battery may be reconfigured by connecting the plurality of battery cores in a series configuration or a parallel configuration.

Abstract: A switching circuit for controlling charging input from a DC source to at least one inverter circuit, each inverter circuit corresponding to at least one respective battery, the switching circuit is provided with a switching device which when positioned in series with the inverter circuit and the DC source, the switching device configured to control the charging input provided to the at least one respective battery, the switching device controllable in conjunction with switches in the at least one inverter circuit based on at least one voltage of the at least one respective battery.

Abstract: Provided are a battery protection circuit and a lithium battery system. The battery protection circuit includes a switch circuit, a drive control circuit, a reverse connection protection circuit and a power supply circuit. A first input terminal of the reverse connection protection circuit is connected to an output terminal of the power supply circuit. An output terminal of the reverse connection protection circuit is connected to a second input terminal of the drive control circuit. The reverse connection protection circuit is configured to output a reverse connection control signal when the battery is reversely connected to a charger. The drive control circuit is configured to control, according to the reverse connection control signal, the switch circuit to turn off.

Abstract: A battery management system including a first connection unit, a first slave controller and a master controller. The first connection unit electrically connects a first battery cell included in a first battery group to the first slave controller. Power from the first battery group is supplied to the first slave controller through a first power line included in the first connection unit. The first slave controller determines a first reference voltage value indicating a voltage of the first battery cell during the execution of the first communication mode, and determines a first comparative voltage value indicating a voltage of the first battery cell during the execution of the second communication model. The master controller determines whether the first power line has an open circuit fault based on the first reference voltage value and the first comparative voltage value.

Abstract: Uses of artificial intelligence in battery technology including a method that includes receiving a trained model, receiving sensor data from at least one sensor associated with a battery, and executing the trained model by a processor. Executing the trained model includes providing the sensor data as input to the trained model to generate a model output. The method also includes sending, from the processor to a charge controller coupled to the battery, a control signal that is based on the model output and automatically, by the charge controller, initiating or terminating charging of the battery based on the control signal.

Abstract: A fuel cell system includes a fuel cell stack and a control device that controls operation of the fuel cell system based on a measured voltage value measured by a voltage sensor. When the fuel cell system is started and a value measured by a temperature sensor is equal to or less than a temperature determined in advance, the control device raises the voltage of the fuel cell stack until a voltage condition determined in advance is met, by supplying a cathode with an oxidant gas before current sweep is started. The control device sets a voltage command value and a current command value such that an operation point of the fuel cell stack is on an equal power line of the fuel cell stack when the operation point is caused to transition in at least a part of a transition period.

Abstract: Devices and methods described herein relate to wireless recharging from a distance, and increasing the efficiency of such charging by intelligently or autonomously changing the rectification mode of the implanted device.

Abstract: A method for determining an operating temperature of a battery cell in which (i) a value of a measure variable for determining an external temperature of the battery cell is detected, (ii) an internal temperature of the battery cell is determined by detecting an electrical impedance of the battery cell, and (iii) a value of the operating temperature of the battery cell is determined from the external and/or the internal temperature. The internal temperature of the battery cell in a first operating state of the battery cell is determined more frequently when the value of the determined external temperature, the internal temperature and/or the operating temperature lies within a predefined first safe range, and is determined less frequently when the value of the determined external temperature, the internal temperature and/or the operating temperature lies outside the predefined first safe range.

Abstract: An inductance component has a given value causing a time constant of a circuit composed of one of first and second routes in which an abnormality does not occur and a connection path connecting the first and second routes not to allow a voltage of one of loads disposed in the other one of the routes to decrease to less than a lower limit of an operating voltage of one of loads during a shut-off period, which starts from a time when it is determined by an abnormality determiner that an abnormality has occurred in any one of the first route and the second route to a time when an inter-route switch enters a switched off state upon receiving a switch-off command from a state controller.

Abstract: An integrated fuel management system can include a switching unit coupled to an electric vehicle (EV) charging station, a computer system, a first electronic unit, and a second electronic unit. The first electronic unit can be coupled to the switching unit and operable for providing state information for the EV charging station to the computer system. The second electronic unit can be coupled to a fueling station for types of vehicles that use fuel and operable for providing state information for the fueling station to the computer system. Further, the computer system can be operable for displaying the state information for the EV charging station and for displaying the state information for the fueling station.

Abstract: Various embodiments of the present invention relate to wireless power transfer (WPT).

Abstract: An electric power charge and discharge system for an electronic device having a battery, by which the electronic device can be used for a long period of time. In a wireless communication device including a wireless driving portion including a first battery and a wireless charging portion including a second battery, the first battery is charged by electric power from a fixed power supply and the second battery is charged by using electromagnetic waves existing in an external space. Further, the first battery and the second battery are discharged alternately, and during a period in which the first battery is discharged, the second battery is charged.

Abstract: An apparatus is disclosed for adaptive multi-mode charging. In an example aspect, the apparatus includes at least one charger having a first node and a second node. The at least one charger is configured to accept an input voltage at the first node. The at least one charger is also configured to selectively operate in a first mode to generate a first output voltage at the second node that is greater than or less than the input voltage or operate in a second mode to generate a second output voltage at the second node that is substantially equal to the input voltage.

Abstract: A battery protection circuit with a novel configuration and a power storage device including the battery protection circuit are provided. The battery protection circuit includes a switch circuit for controlling charge and discharge of a battery cell; the switch circuit includes a mechanical relay, a first transistor, and a second transistor; the switch circuit has a function of controlling electrical connection between a first terminal and a second terminal; the mechanical relay has a function of breaking electrical connection between the first terminal and the second terminal; the first transistor has a function of supplying first current between the first terminal and the second terminal; the second transistor has a function of supplying second current between the first terminal and the second terminal; and the first current is higher than the second current.

Abstract: A battery charging method includes: acquiring a current static voltage of a battery in a current charging stage, and determining the maximum charging current matching with the current static voltage, during staged charging of the battery; and charging the battery according to the maximum charging current. The charging speed can be guaranteed, and the overvoltage protection cannot be triggered during each charging stage, thereby preventing damages to battery cells.

Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).

Abstract: A flat panel substrate with integrated antennas and wireless power transmission system for delivering power to a receiving device is presented herein. A method can comprise depositing, onto a flat panel substrate, an antenna layer comprising multiple adaptively phased antennas elements; and depositing, onto the flat panel substrate, respective thin film transistor (TFT)-based antenna management circuits for the multiple adaptively phased antenna elements—the respective TFT-based antenna management circuits being operable to measure respective first phases at which first signals are received at the multiple adaptively phased antenna elements, and based on the respective first phases, control respective second phases at which second signals are transmitted from the multiple adaptively phased antenna elements to facilitate delivery, via the second signals, of power to the receiving device.

Abstract: A method for assessing a state of charge/discharge (SOC/SOD) for a secondary electrochemical cell, the cell having a first operational mode during which the cell is charged from a power supply connected to terminals of the cell, a second operational mode during which the cell is discharged into a load and a rest mode, the method comprising steps of measuring entropy and enthalpy for the electrochemical cell in the course of the first and second operational modes and during rest, and calculating a data representative of the state of charge/discharge (SOC/SOD).