Abstract: The disclosure is related to a battery management of an electric vehicle. Particularly, the disclosure relates to performing the battery management according to a ‘state of charge’ (SOC) management condition predetermined for an electric vehicle battery.

Abstract: A charging circuit for an energy storage device having an inductive transmitter element designed to inductively receive a charging AC voltage. In one embodiment, a rectifier is coupled to the inductive transmitter element and designed to convert the received charging AC voltage into a charging DC voltage. The energy storage device has at least one energy supply section coupled between two output connections of the energy storage device. The energy supply section has one or more energy storage modules connected in series in the power supply section. The energy storage modules each have an energy storage cell module having at least one energy storage cell, and a coupling device having a large number of coupling elements.

Abstract: When an energy store of a vehicle is charged via a charging device, a voltage (U) which is made available by the charging device, at a terminal of the vehicle, is measured. A charging current (I) which is made available by the charging device and which charges the energy store is regulated as a function of this voltage (U) in order to limit the power loss during charging.

Abstract: A method and system to charge efficiently and safely batteries that power an electronic device and are comprised in an electronic device. The method and system performs measurement of electrical currents flowing in different branches of an electrical circuit that comprises the batteries and determines if there if there is a battery connection fault. The charge current used to charge the batteries is adjusted in accordance with the detected fault or absence thereof, in order not to exceed a safe current limit.

Abstract: Systems and methods for implementing a safety circuit in charging devices are disclosed. In an exemplary embodiment, a method may include closing a latch to stop delivery of a charging current to a battery when voltage produced by the battery indicates that the battery is non-rechargeable. The method may also include dropping a threshold from an initial value for the voltage produced by the battery to a baseline value so that the latch remains closed even if the voltage produced by the non-rechargeable battery drops below the initial value of the threshold. The method may also include resetting the latch each time a battery is connected to the charging device.

Abstract: Techniques are described herein that are capable of increasing efficiency of wireless power transfer. A wireless power transfer system includes features that allow the system to be deployed in public spaces such as airports or in commercial establishments such as restaurants or hotels to allow a user to recharge one or more portable electronic devices while away from home. To accommodate wireless recharging of a variety of device types and states, the system may receive parameters and/or state information associated with a portable electronic device to be recharged and may control the wireless power transfer in accordance with such parameters and/or state information. For instance, the system may increase efficiency of the wireless power transfer based on such parameters and/or state information. The system may also provide a secure and efficient means for obtaining required payment information from the user prior to the wireless power transfer, thereby facilitating fee-based recharging.

Abstract: Aspects of charger detection and optimization prior to host control are described herein. In various embodiments, a condition of whether reverse current is present on a system bus is detected. When the condition for reverse current is present, reverse current is sunk by one or more of various reverse current sink circuits. By relying upon one or more of the reverse current sink circuits, for safety, to address or mitigate the condition for reverse current, a detector may be able to identify or distinguish among several different types of charger or charging ports coupled to a system bus allowing a charger to be selected optimally. Further, an indicator of the type of charger or charging port coupled to the system bus is communicated over a single pin interface, for backwards compatibility with circuits capable of identifying between only two different types of chargers.

Abstract: A delayed power-on function for an electronic device is disclosed. A charging unit charges a rechargeable battery with a pre-charge current when a voltage of the rechargeable battery is less than a voltage threshold value and with a current larger than the pre-charge current when the voltage of the rechargeable battery is greater than the voltage threshold value. A disabling unit can disable power-on when the voltage of the rechargeable battery is less than the voltage threshold value. A user may also be notified when power-on is disabled.

Abstract: In a charging control system for recording data regarding charging a secondary battery, a status recording unit refers the charging voltage value and the charging current value and records the referred charging voltage, the referred charging current and reference time when the charging current value is referred and time when the charging voltage value is referred, on the recording unit. A battery protecting unit stops the charging the secondary battery when the charging voltage exceeds the predetermined target voltage value. The status recording unit starts recording of the charging voltage value, the charging current value, and the reference time on the recording unit, when the charging voltage exceeds the target voltage value as a result of a fail in stopping the charging by the battery protecting unit because of occurrence of a trouble in the battery protecting unit.

Abstract: A method for controlling a hybrid machine is disclosed. The hybrid machine may be equipped with a turbine engine, a generator connected in series with the turbine engine, an electrical energy storage device, and a motor drivingly connected to a power output component for the hybrid machine. A controller may receive a power demand signal, determine a power level in the electrical energy storage device, determine available inertial energy stored at least in rotating components of the turbine engine and the generator, and provide one or more control signals to selectively control powering the turbine engine to full power, selectively turn off all fuel to the turbine engine, selectively store excess energy as electrical energy by directing excess electrical energy from the generator to the electrical energy storage device, and selectively store excess energy as inertial energy.

Abstract: A charging control device includes a chopper circuit, a primary side coil, a primary side inverter circuit, and a control unit. A charged device includes a secondary side coil, and a secondary side rectifier circuit that is configured to be connectable to a storage cell. The control unit samples a secondary side signal at a second cycle, samples a primary side signal at a first cycle shorter than the second cycle, estimates the secondary side signal at a timing of the primary side signal sampled this time, based on the secondary side signal, the primary side signal obtained when the secondary side signal is sampled, and the primary side signal sampled this time, and performs feedback control of a control signal so that a predetermined signal of the secondary side rectifier circuit becomes constant.

Abstract: A wireless charging system comprising a wireless charger for charging a chargeable device in a charging region in a vehicle. The system includes a controller that detects a charging status of the chargeable device in the charging region and an indicator in proximity to or on the charging region for indicating the charging status by illuminating one or more light sources.

Abstract: In one embodiment, a battery charger can include: (i) a step-up converter configured to generate an output signal by boosting a DC input voltage, where a threshold voltage is greater than the DC input voltage; (ii) a charging control circuit configured to receive the output signal from the step-up converter, and to control charging of a battery; (iii) the charging control circuit being configured to regulate the output signal to maintain a charging current for the battery charging as a trickle current when a battery voltage is less than the threshold voltage; and (iv) the charging control circuit being configured to charge the battery directly by the output signal when the battery voltage is greater than the threshold voltage.

Abstract: Some embodiments of the present invention provide a system that adaptively charges a battery, wherein the battery is a lithium-ion battery which includes a transport-limiting electrode governed by diffusion, an electrolyte separator and a non-transport-limiting electrode. During operation, the system determines a lithium surface concentration at an interface between the transport-limiting electrode and the electrolyte separator based on a diffusion time for lithium in the transport-limiting electrode. Next, the system calculates a charging current or a charging voltage for the battery based on the determined lithium surface concentration. Finally, the system applies the charging current or the charging voltage to the battery.

Abstract: A charge control device includes a charge control circuit to control a charge of a secondary battery by controlling an output stage connected between a power supply and the secondary battery. The charge control circuit includes a first error amplifier to generate a first error voltage in response to a difference between a predetermined first reference voltage and a first feedback voltage. The value of the first feedback voltage is determined in accordance with a primary current supplied from the power supply to the output stage. The charge control circuit also includes a second error amplifier to generate a second error voltage in response to a difference between either one of a predetermined second reference voltage and the first error voltage, and a second feedback voltage. The value of the second feedback voltage is determined in accordance with a charge current supplied from the output stage to the secondary battery.

Abstract: This disclosure is directed to power delivery including out-of-band communication. In general, a device to be charged and a charging device may interact using two separate wireless signals. A first wireless signal (e.g., a radio frequency (RF) signal) may be employed to charge the device. A second wireless signal of a different type (e.g., an infrared (IR) signal) may be employed for inter-device communication. An example device may comprise a power module to receive a first wireless signal, a transmitter to transmit a second wireless signal, and a charging control module. The first wireless signal may be for conveying power from a charging device to the device, the second wireless signal may be for transmitting information from the device to the charging device, and the charging control module may be to cause the transmitter to transmit the second wireless signal based on an indication received from the power module.

Abstract: A system (1-2) for efficiently transferring harvested vibration energy to a battery (6) includes a piezo harvester (2) generating an AC output voltage (VP(t)) and current (IPZ(t)) and an active rectifier (3) to produce a harvested DC voltage (Vhrv) and current (Ihrv) which charge a capacitance (C0). An enable circuit (17) causes a DC-DC converter (4) to be enabled, thereby discharging the capacitance into the converter, when a comparator (A0,A1) of the rectifier which controls switches (S1-S4) thereof detects a direction reversal of the AC output current (IPZ(t)). Another comparator (13) causes the enable circuit (17) to disable the converter (4) when the DC voltage exceeds a threshold (VREF), thereby causing the capacitance be recharged.

Abstract: A USB charging system and the method thereof are disclosed. The USB charging system includes a hub device having a charging function module and a plurality of connection ports. The charging function module dynamically distributes the charging current to the connection ports based on power supply ability of a power unit for providing the charging current to at least one chargeable device wherein the charging current is greater than USB protocol current.

Abstract: In a non-contact charging method, variable information with which a resonance frequency of a resonance circuit of an equipment device having maximum charging power as the power transmitting frequency, and a resonance frequency or a Q value of a resonance circuit of a power receiving unit of an equipment device other than the equipment device having the maximum charging power as a resonance frequency or a Q value for charging depending on each charging power, and transmits to each equipment device variable information corresponding to each equipment device.

Abstract: A monitoring module monitors a charge level of a battery in a vehicle. A network interface module transmits a first set of charging parameters for charging the battery to a utility company and receives a reply and a charge return request from the utility company for returning charge from the battery to the utility company. The first set of charging parameters includes the charge level of the battery and a first time of the day for charging the battery. The reply includes a second time of the day for charging the battery. A control module generates a first signal based on the reply and the first set of charging parameters, and a second signal based on the charge return request and charge return parameters. A charging module charges the battery based on the first signal. A charge retrieval module returns the charge based on the second signal.

Abstract: A charging system may include a switching device to receive an output voltage from an alternative power source and to provide an output voltage of the charging system, and an algorithm device to provide a control signal to the switching device based on a sensed power from the power source and a sensed output voltage from the charging system.

Abstract: The present invention relates, in general, to a charge equalization apparatus for batteries and, more particularly, to a charge equalization apparatus, in which the primary windings (M11 to M1N) of a number of transformers (T1 to TN) corresponding to the number of battery cells are connected in parallel with each other, a switch (S) for controlling the flow of current of the primary windings (M11 to M1N) of the parallel-connected transformers is connected in series with the parallel-connected primary windings, respective secondary windings (M21 to M2N) corresponding to the primary windings are connected in parallel with the battery cells, and the battery cells are connected in series with each other.

Abstract: This battery controller of a vehicle includes an internal combustion engine, a generator; a battery; a battery state detector that detects a battery state including the remaining capacity of the battery; a degree-of-deterioration determination unit that determines the degree of deterioration of the battery based on the battery state; a neglect state detector; a monitoring time setting unit that sets a monitoring time to monitor the remaining capacity based on the degree of deterioration and the current remaining capacity of the battery when the neglect state of the vehicle is detected by the neglect state detector; and a charging necessity determination unit that determines whether or not the battery needs to be charged after the monitoring time set by the monitoring time setting unit passes. Charging of the battery by the generator is started when the charging necessity determination unit determines that the battery needs to be charged.

Abstract: A charging system, electronic apparatus, charge control method, and program applicable also to a movable-coil-type charging system are provided. A power receiving unit includes a charging section charging a secondary battery by using current induced in a power receiving coil; a charge state determining section monitoring a charge state of the secondary battery to determine whether charging of the secondary battery is required to be stopped; a command transmitting section stopping an operation of charging when determined that charging of the secondary battery is required to be stopped and transmitting a command to a power transmitting unit; a recharge determining section determining, while charging of the secondary battery is stopped, whether the secondary battery requires recharging; and a coupling releasing section temporarily releasing coupling of the power receiving coil and a power transmitting coil by electromagnetic induction when determined that the secondary battery requires recharging.

Abstract: Described herein are techniques related to near field coupling and wireless charging or wireless power transfer (WPT). More particularly, an induced current at a receiving coil antenna is measured and utilized as a basis for re-alignment with a transmitting coil antenna is described.

Abstract: A charging system can be connected to a power system and a storage battery unit, including: a charging apparatus that charges the storage battery unit; a measurement unit that measures at least one piece of information on a current, a voltage, and a harmonic wave of the power system; and a control apparatus that transmits to the charging apparatus, according to the at least one information measured by the measurement unit, a command for controlling charging with respect to the storage battery unit.

Abstract: The present invention relates generally to a method and apparatus for the management of individual cells in a battery system. More particularly, the present invention relates to the control of charging a battery system such that the cells stay balanced and the ability to produce a battery system profile and cell profile to adapt to the changes of the cells within the battery system.

Abstract: Circuitry in an electronic device may be attached to external device, such as a power supply, to receive a voltage at a desired voltage level from the external device. The circuitry may assert one of several electrical configurations on the cabling that electrically connects the portable device to the external device to indicate to the external device a desired voltage level.

Abstract: A shunt circuit includes: a shunt resistor; a transistor connected in parallel to a storage element via the shunt resistor; a first OP amplifier configured to compare a battery voltage supplied to the storage element with a detection voltage; and a second OP amplifier configured to shunt a shunt current from a charging current supplied from a charging unit when the battery voltage reaches the detection voltage. The detection voltage is increased step by step, and the shunt current is increased whenever the battery voltage reaches the detection voltage.

Abstract: In accordance with an aspect of the present disclosure, an electrical system for an automotive vehicle has an electrical generating machine and a battery. A set point voltage, which sets an output voltage of the electrical generating machine, is set by an electronic control unit (ECU). The ECU selects one of a plurality of control modes for controlling the alternator based on an operating state of the vehicle as determined from vehicle operating parameters. The ECU selects a range for the set point voltage based on the selected control mode and then sets the set point voltage within the range based on feedback parameters for that control mode. In an aspect, the control modes include a trickle charge mode and battery charge current is the feedback parameter and the ECU controls the set point voltage within the range to maintain a predetermined battery charge current.

Abstract: An installation and a method for charging an electric battery for an electric vehicle. The electric vehicle comprises an on-board computer. The installation comprises a main power source delivering a charging power Pc1. The charging method comprises the step of determining the charging power Pc to be delivered to the electric battery in relation to a charging voltage and/or current set point demanded at an instant t by the onboard computer. The charging power is compared against the charging power Pc1 delivered by a main power source. If Pc>Pc1, at least one auxiliary power source delivering a charging power Pc2 is utilized in addition to the main power source such that the sum of the charging powers delivered by the power sources is equal to the charging power Pc.

Abstract: A method of charging a battery includes following steps: First, a charging voltage is provided to charge the battery. Afterward, a charging control variable is judged whether to reach to an adjustment value. Afterward, the charging voltage is adjusted with a first voltage difference to continuously charge the battery when the charging control variable reaches to the adjustment value. Afterward, a health state value of the battery is judged whether less than or equal to a critical health state value. Finally, the charging voltage is increased with a second voltage difference to continuously charge the battery when the health state value of the battery is less than or equal to the critical health state value.

Abstract: A method and system to manage battery pack having a plurality of rechargeable battery cells connected in series is disclosed. The system comprises a plurality of identical voltage detection and charging modules, one for each of the plurality of battery cells. The system also comprises a multiplexer connected to and multiplexing each of the voltage detection and charging modules. Each of the modules has one or two wires connecting to the positive side of its corresponding battery cell and another set of one or two wires connecting to the negative side of the battery cell.

Abstract: A battery cell charger for rapidly charging a lithium ion battery cell (or string of series-parallel connected cells) having a maximum battery cell voltage the battery cell charging system including: a circuit for charging the battery cell using an adjustable voltage charging-profile to apply a charging voltage and a charging current to the battery cell wherein the adjustable voltage charging-profile includes: a first charging stage with a constant first stage charging current and an increasing battery cell voltage with the first stage charging current provided until the first stage charging voltage is about equal to a first stage complete voltage less than the maximum battery cell voltage; one or more intermediate charging stages, each intermediate stage selected from the group consisting of one or more of an intermediate constant voltage stage that provides a decreasing charging current, an intermediate constant current stage that produces an increasing battery cell voltage, and combinations thereof; and a

Abstract: A system is provided to allow for charging of a chemical storage device without a rectifier. A gate is used in conjunction with a gate controller. The gate controller monitors input voltage and opens the gate when voltage crosses a zero crossing in a first direction. The gate monitor then closes the gate when the voltage crosses a zero crossing in a second direction. This increases the chances that the output power will have voltage in a single direction. This output power is then fed to a chemical storage device, where it can be stored and used by one or more electronic devices.

Abstract: There are provided a power supplying apparatus controlling voltage of a power factor correcting circuit according to a power state and a power charging apparatus controlling voltage of a power factor correcting circuit according to a charging state of a battery. The power supplying apparatus includes: a power factor correcting circuit switching input power to correct a power factor thereof and adjusting a voltage level of the power of which the power factor has been corrected according to a state of power transferred to a load; and a resonant DC to DC converting circuit having a resonance frequency varied according to a voltage level of DC power from the power factor correcting circuit and converting the DC power from the power factor correcting circuit into supply power having a preset level according to the resonance frequency.

Abstract: Embodiments for a battery charger include a single conversion switched mode power supply having a bias winding on the primary side of the power transformer. The bias winding produces an output that is proportional to the voltage produced on the secondary winding, and is sensed by a programmable voltage sensing circuit. The programmable voltage sensing circuit is programmed by a voltage select signal from the secondary side of the charger to produce an sense signal that is proportional to the output of the bias winding by a selected factor corresponding to a battery type of a battery being charged.

Abstract: A battery charger including a converter unit, a terminal adaptor, a cable, a battery, and/or multiple power connectors. A terminal, such as an electronic device, can be connected to the converter unit using the cable or directly to the converter unit without the cable. The converter unit determines when to draw power from an external power and when to cease drawing power from the external power source by detecting a power enablement condition or a power disablement condition. The power disablement condition occurs when the terminal is fully charged, the terminal is disconnected from the converter unit, and/or a charge time of the terminal exceeds the predetermined charge time threshold. The power enablement condition occurs when the terminal is initially connected to the converter unit and/or the terminal needs to be charged. The battery supplies power to components of the converter unit and/or the terminal.

Abstract: Described herein are materials for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high stability during battery cycling up to high temperatures high voltages, high discharge capacity, high coulombic efficiency, and excellent retention of discharge capacity and coulombic efficiency over several cycles of charging and discharging. In some embodiments, a high voltage electrolyte includes a base electrolyte and a set of additive compounds, which impart these desirable performance characteristics.

Abstract: Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Abstract: A voltage conversion circuit for a charging device includes a voltage-stabilizing circuit and a switching circuit. The voltage-stabilizing circuit includes a voltage stabilizer circuit and a feedback resistor, the voltage stabilizer circuit comprises an input pin, an output pin, and a feedback pin. The switching circuit includes a switch and at least two divider resistors, the switch comprises at least two data input terminals, a data output terminal, and two control terminals. The input pin is connected to a power source, and the feedback resistor is connected between the feedback pin and ground. The data input terminals are respectively connected to the output pin through one of the divider resistors, the data output terminal is connected between the feedback pin and the feedback resistor, the two control terminals are capable of receiving control signals to control the data output terminal to selectively connect to one of the data input terminals.

Abstract: A rechargeable battery pack is discontinuously charged in multiple discrete charging intervals. Reductions in battery pack voltage that occur during non-charging intervals, each transpiring between a respective pair of the discrete charging intervals, are measured. Multiple resistance values that characterize the internal resistance (DC resistance) of the battery pack are generated based on the reductions in battery pack voltage that occur during the non-charging intervals.

Abstract: A battery system comprises at least two modules which include a plurality of battery cells, with each module being associated with a cell voltage detection unit which is connected to a central controller via a common communication bus. Each module additionally includes a module voltage detection unit which is connected to the central controller and is configured to separately detect the voltage of the associated module.

Abstract: Mechanical, electronic, and business method facets are combined to create a highly integrated transportable power plant. A vehicle system incorporates and transports and electrical system capable of using alternating current and direct current electrical power inputs to charge onboard energy storage modules. The electrical system also provides alternating current and direct current electrical outputs via a bank of interoperable connectors whereby appliances such as cell phones and battery operating lighting products may be efficiently recharged. An enclosure of the vehicle system protects the electrical components, provides shelter for the operator, supports roof-mounted, flexible photovoltaic panels, and provides shelf surfaces for organizing and protecting devices being recharged.

Abstract: Techniques are provided for selecting a charge current to be sunk by a mobile electronic device. A charging device is received at a connector of the mobile electronic device. The charging device is configured to supply a charge current to a rechargeable battery of the mobile electronic device. One or more data signals is/are received from the charging device at an interface circuit of the mobile electronic device on one or more data signal lines through the connector. One or more control signals are applied to the interface circuit to enable data signal values to be generated for the data signal(s) based on the control signal(s) and a type of the charging device. The data signal values are mapped to a maximum charge current for the rechargeable battery. The charge current supplied by the charging device to the rechargeable battery is limited to the selected maximum charge current.

Abstract: A method for processing a power source state and a terminal supporting the same, wherein the terminal includes a power source configured to supply a specific electric power; a charger IC configured to collect power source information transmitted from a charger to the power source; a gauge IC configured to collect charging information of the power source and to generate gauging information to display a fuel gauge indicating a charging state of the power source based on the power source information transmitted by the charger IC; a control unit configured to display the fuel gauge based on the gauging information transmitted by the gauge IC; and a display unit configured to display the fuel gauge.

Abstract: Systems and methods provide LED-based emergency lighting utilizing AC-DC switch mode power conversion technology, NiMH battery technology, and emergency lighting lamps that use high power white LEDs as the emergency lighting source. A low voltage microprocessor based circuit design reduces the battery input voltage for the unit to a nominal level of 2.4VDC. The microprocessor executes a pulse charging algorithm to lower battery maintenance mode power consumption levels and extend the useful life of the battery. Brownout detection technology does not require the determination of the AC input voltage level or transmission of the brownout detection signal to the secondary side of the circuit. A rechargeable battery is charged by a charge current selectively set to a bulk charge value, a trickle charge high value, or a trickle charge low value based on sampling of the voltage of the rechargeable battery and the charge current.

Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: A method for controlling a specific electric machine includes receiving with a controller a back electromotive force (BEMF) coefficient for the specific electric machine. The controller is configured to control operation of an inverter coupled to the electric machine where the inverter is configured to provide or receive multi-phase electricity to or from the electric machine in motor mode or generator mode, respectively. The method further includes receiving with the controller an input related to a selected torque to be applied by or a selected power to be removed from the electric machine. The method further includes determining a first electrical parameter the inverter is to apply to in motor mode or a second electrical parameter the inverter is to convert power to in generator mode using the BEMF coefficient, and applying the first electrical parameter to the electric machine or converting the received power to the second electrical parameter.

Abstract: A method is provided for detecting an open cell tap condition in a battery pack. The method includes: applying a detection voltage across an electrical impedance that is coupled to a measurement node, where the detection voltage exceeds voltage measures at a node disposed between serially coupled battery cells of the battery pack and the measurement node is coupled by a circuit path to said node; measuring the voltage at the measurement node while the detection voltage is being applied; and detecting a break in the circuit path when the voltage measured at the measurement node is substantially equal to the detection voltage.