Abstract: The invention relates to a control circuit (250) for a power supply unit (200) that has an input (207, 209) for receiving a mains supply (208), the control circuit (250) configured to: sample the input (207, 209) in order to obtain a first sample value; sample the input (207, 209) in order to obtain a second sample value subsequent to obtaining the first sample value; compare the first and second sample values to provide an outcome; set a delay interval in accordance with the outcome of the comparison of the first and second sample values; and sample the input (207, 209) in order to obtain a third sample value after the delay interval has elapsed.

Abstract: The invention relates to a battery comprising a battery housing and at least one battery cell and at least one fiber optic sensor which has at least one waveguide with a core and a material surrounding said core. At least one fiber Bragg grating is introduced in the core and is mechanically coupled to the battery housing and/or to the battery cell in order to detect a change in size of the battery housing and/or of the battery cell. At least a second fiber Bragg grating is introduced in the core and is mechanically decoupled from the battery housing and the battery cell. The invention further relates to a method for the open loop or closed loop control of the charging and/or discharging of a battery, measurement values being acquired by at least one fiber optic sensor.

Abstract: A switching charging circuit works by receiving an input voltage and then correspondingly outputting an output voltage to a battery. Within a standby duration, to assure that there is sufficient voltage provided for turning on switches in a switching circuit alternately when the switching charging circuit works in the charging duration again, a bootstrap capacitor is charged by a supply voltage. When the bootstrap capacitor is charged, a reverse current is generated by the battery and the reverse current flows towards the input end of the switching charging circuit. In addition, by means of the circuit configuration of this switching charging circuit, the reverse current originally flowing towards the input end of the switching charging circuit can flow back to the battery or to a system load.

Abstract: A protection IC includes a bias output terminal connected to a back gate of a MOS transistor, a load side terminal connected to a power supply path between a load and the MOS transistor, a load side switch inserted in an electric current path connecting the bias output terminal and the load side terminal, and a control circuit configured to control the load side switch based on a state of a secondary battery and thereby cause a back gate control signal for controlling a voltage of the back gate to be output from the bias output terminal. The load side switch is formed on an N-type silicon substrate and includes at least two NMOS transistors whose drains are connected to each other, and the control circuit is configured to simultaneously turn on or turn off the two NMOS transistors based on the state of the secondary battery.

Abstract: When a voltage value of an electrical storage device becomes higher than a predetermined voltage value for identifying an overcharged state of the electrical storage device, calculation of a heat generation amount of the electrical storage device based on a current value is started. When the calculated heat generation amount is larger than a predetermined amount, it is determined that the electrical storage device is in an abnormal state (abnormal state related to heating). Because the electrical storage device enters an easily heated state when the voltage value becomes higher than the predetermined voltage value, the heat generation amount may be monitored by starting calculation of the heat generation amount. Once the voltage value becomes higher than the predetermined voltage value, irrespective of a high/low relationship between the voltage value and the predetermined voltage value, the abnormal state may be determined by monitoring the heat generation amount.

Abstract: In a case where high-rate deterioration of a secondary battery progresses before execution of external charging by a charging device, an electronic control unit (ECU) executes an SOC adjustment process of adjusting an SOC of the secondary battery such that the SOC falls within a predetermined range. The predetermined range is a range where an expansion-contraction change of a negative electrode of the secondary battery along with charge and discharge of the secondary battery is small as compared with a case where the SOC is out of the predetermined range. After the execution of the SOC adjustment process, the ECU executes a process of moderating the high-rate deterioration so as to moderate the high-rate deterioration, and then executes the external charging.

Abstract: A protection circuit and an LED driving circuit are provided, which include a Zener diode, a potential dividing unit, a first switch unit, and a second switch unit. The cathode and anode of the Zener diode are connected to a first power source and an input terminal of the potential dividing unit, respectively. The control terminal, input terminal, and output terminal of the first switch unit are connected to an output terminal of the potential dividing unit, a second power source, and the control terminal of the second switch unit, respectively. The input terminal and output terminal of the second switch unit are connected to the second power source and a boost circuit, respectively.

Abstract: The present disclosure discloses a charging system, a lightning protection method for a terminal during charging and a power adapter. The charging system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a second rectifier, a first charging interface, a second voltage sampling circuit, and a control unit. The control unit adjusts a duty ratio of a control signal such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement, and controls the switch unit to switch on for a first predetermined time period for discharging when the voltage value sampled is greater than a first predetermined voltage value. The terminal includes a second charging interface and a battery. When the second charging interface is coupled to the first charging interface, the second charging interface applies the third voltage to the battery.

Abstract: An apparatus includes a battery state module that determines a battery state of each of a plurality of battery cells forming a battery unit. A battery state includes a health of the battery cell. A battery state of a battery cell differs from a battery state of other battery cells of the battery unit. Each battery cell is connected to a shared bus through a bypass converter that provides power from the battery cell to the shared bus. A charge/discharge modification module determines, based on battery state, an amount to vary a charging characteristic for each battery cell compared to a reference charging characteristic. Each charging characteristic varies as a function of a reference state. A charge/discharge module adjusts charging/discharging of a battery cell of the battery unit based on the charging characteristic of the battery cell.

Abstract: A system and method for controlling charging of a low-voltage battery are provided. The method includes determining a state of charge of the low-voltage battery of a vehicle based on a voltage of the low-voltage battery and determining a state of charge of the low-voltage battery based on a magnitude of consumed power of a low-voltage direct current (DC) converter (LDC) providing charged power to the low-voltage battery during a period in which vehicle start-up is performed. A charged voltage of the low-voltage battery is then set based on a determination result of the state of charge of the low-voltage battery.

Abstract: A device management apparatus connected to a plurality of devices via a network includes a collecting unit that receives usage data indicating a status of use of each of the devices from each of the devices and that stores the received usage data in a storage device, and a common data acquiring unit that acquires common data that is common to the devices from the usage data of each of the devices stored in the storage device.

Abstract: System and method for charging a battery pack. One system includes a battery pack with at least one battery cell, a memory, and a charging circuit configured to control a charging current from a charger to the battery pack. The battery pack also includes an electronic processor configured to control the charging circuit and to determine a type of charger to which the battery pack is connected. The electronic processor is further configured to determine, based on the type of charger, a disconnect time and to control the charging circuit to allow the charging current to charge the battery pack. The electronic processor is further configured to control the charging circuit to electrically disconnect the battery pack from the charger after the disconnect time elapses and to control the charging circuit to electrically reconnect the battery pack and the charger after disconnecting the battery pack from the charger.

Abstract: When connection of a charging gun is detected, a charging-control ECU wakes up, and turns on a power supply relay to activate a charging-communication ECU. The charging-control ECU subsequently actives a power-control computer by communicating therewith. The power-control computer closes an SMR, and closes a power supply switch to activate a monitoring unit. If an abnormality occurs in inband communication, the charging-control ECU opens the power supply relay, instructs the power-control computer to shift into sleep mode, and subsequently shifts itself into sleep mode. The power-control computer opens the SMR and the power supply switch, and subsequently shifts into sleep mode.

Abstract: An system is provided that includes a first circuit that serially connects storage battery units, second circuits, and adjusters that adjust an amount of current flowing at the second circuits. The system also includes a controller that executes at least one of first control, where voltage at a first storage battery unit is made to be higher than voltage at a second storage battery unit regarding which prediction has been made that a degree of deterioration will be greater than the degree of deterioration of the first storage battery unit, and charging is stopped. The system further includes second control, where the adjusters are controlled and voltage at the first storage battery unit is made to be lower than voltage at the second storage battery unit, and discharging is stopped.

Abstract: In a voltage monitoring system, a voltage monitoring module includes an adjusting current control circuit to generate an adjusting current so that the operating current consumed by the voltage monitoring modules reaches a specified value corresponding to a first operation current setting command, and stops generating the adjusting current according to an operating current switching command; and an operating current measurement circuit to measure the operating current according to the operating current measuring command following the operating current switching command; and in which a module control circuit sends a second operation current setting command based on the operating current that was measured, and the adjusting current control circuit generates an adjusting current so that the operating current reaches a specified value corresponding to the second operating current setting command.

Abstract: Examples of a signal calculator include a voltage multiplier and a time divider. The voltage multiplier copies time information corresponding to a first voltage and generates a third voltage using a second current corresponding to a second voltage during a first period corresponding to the copied time information. The time divider generates an output according to a result of comparing a voltage generated by a first current on the basis of a voltage corresponding to a first time with a second voltage corresponding to a second time.

Abstract: A system and methods for delivering power to a multitude of portable electronic devices is provided. More specifically, the system and methods provide for powering different portable electronic devices through a central charging device. The method of delivering a power supply to a plurality of portable electronic devices includes determining a power requirement for each of the portable computing devices and supplying the power requirement to each of the portable computing devices in a daisy chain configuration using a central power device.

Abstract: Battery charger circuitry includes a linear regulator and a current control loop. The linear regulator provides a constant current to a battery while the battery charger circuitry is in a current control mode. While the battery charger circuitry is in a constant voltage mode, the current control loop to: determine whether a charging current provided to the battery is less than an end of charging reference current; in response to the charging current being less than the end of charging reference current, to place the battery charger circuitry into an end of charging state; in response to the battery charger circuitry be placed the end of charging state, and to start a timer; and in response to the timer expiring, to enter the battery charger circuitry into a done state to end charging of the battery.

Abstract: A voltage monitoring module includes a first terminal configured to be coupled to a high-potential-side terminal of a first battery cell, and a second terminal configured to be coupled to a low-potential-side of the first battery cell.

Abstract: A system and method for configuring a transport refrigeration unit (TRU) battery charger in a transport refrigeration system (TRS) is provided. The method includes receiving battery topology data indicating a battery topology of a TRU battery equipped in the TRS. The method also includes determining specific parameters for configuring a battery charging algorithm based on the battery topology data. Also, the method includes the TRU battery charger configuring the battery charging algorithm based on the specific parameters.

Abstract: A battery charging system comprises a voltage bus; at least one charging circuit comprising: an input connected to the voltage bus; an output; and a converter connected between the input and the output and configured to provide DC power to the output; a plurality of charging ports, each charging port comprising: an input; and a pair of contacts configured to connect to battery terminals, the pair of contacts being connected to the input to enable a voltage received at the input to be applied across the pair of contacts; and a plurality of switches configured to connect and disconnect the output of the at least one charging circuit to the input of any one of the charging ports in the plurality of charging ports; and a control unit operably connected to the plurality of switches and configured to operate the plurality of switches.

Abstract: A power supply system has a solar cell and a battery which comprises a plurality of modules. The number of modules used to supply electrical power to the load is controlled as well as the recharging of the modules, based on energy supply and demand data over a time period of multiple days. This enables the battery modules to be used more efficiently, and they can be charged and recharged less frequently on average, thereby extending the battery lifetime.

Abstract: The present invention provides a charging system that includes a charging adapter and a mobile terminal. The charging adapter includes: a second USB interface; and an adjusting circuit for rectifying and filtering the mains supply to obtain an original power signal, for performing a voltage adjustment on the original power signal, and for outputting a power signal after the voltage adjustment. The mobile terminal includes a first USB interface. P first power wires in the first USB interface and P second power wires in the second USB interface are correspondingly coupled, and Q first ground wires in the first USB interface and Q second ground wires in the second USB interface are correspondingly coupled. Because each first power wire and a corresponding second power wire are coupled, at least two charging circuits can be provided, and the charging system supports charging with a large current more than 3 A.

Abstract: A vacuum cleaner may include a cleaner body including a suction motor for generating suction force, a suction unit communicating with the cleaner body and suctioning air and dust, and a battery assembly for supplying power to the suction motor. The battery assembly may include a plurality of battery cells, an inner case including a plurality of cell cases having the plurality of battery cells respectively accommodated therein and spaced apart from each other, and an outer case having the inner case accommodated therein and including a flow hole in which air flows.

Abstract: The charge and discharge control apparatus divides a stored electricity amount of a storage battery into a backup electricity amount and a plurality of predetermined discharge amount corresponding to a plurality of dispatching time points. Each of the dispatching time points corresponds to a dispatching period and a predetermined discharge power. The charge and discharge control apparatus receives a load parameter of an electric loop at each dispatching time point. Each load parameter carries a load power of the electric loop. The charge and discharge control apparatus performs the following operations at each dispatching time point: (i) deciding a real discharge power that the storage battery provides to the electric loop according to a dispatching threshold and the load power corresponding to the dispatching time point and (ii) updating the backup electricity amount according to the real discharge power and the predetermined discharge amount.

Abstract: A switched-mode power supply is provided which has at least one power circuit for supplying a first electrical consumer, and at least one auxiliary power supply unit for generating a first transformer-coupled output voltage for a switching controller for controlling or regulating the power circuit, and at least one further transformer-coupled output voltage for at least one further electrical consumer in a first operating mode. The first and the at least one further transformer-coupled output voltage of the at least one auxiliary power supply unit are variable in comparison with the first operating mode in a further operating mode of the switched-mode power supply.

Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.

Abstract: An electronic device includes an internal battery, a first battery, and a second battery. The device further includes a first latch for locking the first battery and a second latch for locking the second battery. The device further includes a latch state detector for determining whether each of the first and second latches are open or closed, and a remaining battery power detector for detecting the remaining power in each of the first battery, the second battery, and the internal battery. The device further includes an LED and an LED controller for controlling the on-off of the LED. The LED controller operates as follows when the first or second latch is determined to be opened. If at least one of the first battery, the second battery, and the internal battery can supply electric power to the electronic device, the LED controller lights the LED in a first ON state.

Abstract: A battery protection integrated circuit for protecting a secondary battery by controlling a charge or discharge operation of the secondary battery includes a power supply terminal connected to a positive electrode of the secondary battery; a ground terminal connected to a negative electrode of the secondary battery; an input terminal connected to a negative terminal coupled to ground of a load; a control terminal at which a control signal is input, wherein the control signal has a voltage level with reference to a potential at the negative terminal; a signal detection circuit configured to detect a relative voltage level of the control signal input at the control terminal with reference to a potential at the input terminal; and a control circuit configured to control open/close of a switching circuit connected to a charge or discharge path between the negative electrode and the negative terminal based on the control signal.

Abstract: One or more powertrains can include a motor-generator disposed therein that is electrically coupled to an energy storage device through an inverter gate. A regulation strategy can monitor operation of the powertrain to regulate the inverter gate to selectively discharge energy from the energy storage device to the motor-generator to assist the powertrain or to charge energy from the motor-generator to the energy storage device for future use. In an aspect, the regulation strategy may maintain a consistent speed of an internal combustion engine associated with the powertrain. In another aspect, the regulation strategy may regulate simultaneous operation of first and second powertrains disposed a parallel relation.

Abstract: A system for optimizing the use of network bandwidth by a mobile device including a mobile application client, which resides on the mobile device, and is connected to a cloud server, wherein the system analyzes user content consumption, provides a prefetching schedule to the mobile device, and the mobile device prefetches content partially in accordance with the schedule. A method of optimizing the use of network bandwidth using the system is also provided.

Abstract: A controller for a lithium ion secondary battery, includes an electronic control unit configured to: detect an SOC of a lithium ion secondary battery that is a controlled object; set an upper limit SOC and lower limit SOC of a range of use of the lithium ion secondary battery on the basis of the SOC of the lithium ion secondary battery; record a charge history and discharge history of the lithium ion secondary battery; determine whether the lithium ion secondary battery is in an excessive charging state or an excessive discharging state on the basis of the charge history and the discharge history; and raise the lower limit SOC when the lithium ion secondary battery is in the excessive charging state or lower the upper limit SOC when the lithium ion secondary battery is in the excessive discharging state.

Abstract: A battery controller and method for controlling a battery include generating a battery capacity prediction model that characterizes a battery capacity decay rate. Future battery capacity for a battery under control is predicted based on the battery capacity prediction model and a present value of the battery capacity. One or more operational parameters of the battery under control is controlled based on the predicted future battery capacity.

Abstract: An energy storage device includes an integrated fuel gauge that is operatively connected to the energy storage device. The fuel gauge evaluates an operating parameter of the energy storage device and dynamically determines a state of charge. The fuel gauge communicates a communication including a requested operating parameter to the charging component with the single communication line and the signal indicates to an operating system component a change of an energy storage device state. The signal is used to trigger an alert or interrupt that causes the operating system component to display the change of the energy storage state based on the signal.

Abstract: A remote battery monitor that is configurable based upon the data from the battery and is able to monitor the condition of the battery while the battery is present in a circuit.

Abstract: Systems and methods for charging and discharging a plurality of batteries are described herein. In some embodiments, a system includes a battery module, an energy storage system electrically coupled to the battery module, a power source, and a controller. The energy storage system is operable in a first operating state in which energy is transferred from the energy storage system to the battery module to charge the battery module, and a second operating state in which energy is transferred from the battery module to the energy storage system to discharge the battery module. The power source electrically coupled to the energy storage system and is configured to transfer energy from the power source to the energy storage system based on an amount of stored energy in the energy storage system. The controller is operably coupled to the battery module and is configured to monitor and control a charging state of the battery module.

Abstract: A device determines a first voltage measurement of an output of a first brick. The device further determines a second voltage measurement associated with a second brick. The first brick is larger in size than the second brick. The device ramps up an output voltage of the second brick when the second voltage measurement is less than the first voltage measurement.

Abstract: A battery device in one aspect of the present disclosure comprises a battery, a cell voltage monitoring part, a power supply line, a plurality of monitor lines, and an interrupter. The interrupter interrupts the power supply line and all of the plurality of monitor lines when the battery enters an overdischarge state.

Abstract: An arrangement, system and method are described which enhance efficiency, reduce the stray field of wireless power transfer, and make use of special coil geometries for transmitter and receiver. The coil geometry is an approximation of a multipole current. Such currents have a faster decaying electromagnetic field compared to traditional coils. This allows higher power densities to be transferred.

Abstract: A battery pack includes a battery including at least one battery cell, a switching element including a charging switch and a discharging switch arranged on a high current path via which a charging current and a discharging current flow, a battery manager configured to monitor a voltage and a current of the battery, and to controlling charging and discharging of the battery based on the voltage of the battery, and a switch driver configured to output a second driving signal for driving the charging switch according to a control signal from the battery manager, wherein the battery manager is further configured to set a charging current limit based on a deterioration degree of the battery, and to control the charging switch by using the switch driver so that a magnitude of the charging current applied to the battery is equal to or less than the charging current limit.

Abstract: An object is to achieve low power consumption and a long lifetime of a semiconductor device having a wireless communication function. The object can be achieved in such a manner that a battery serving as a power supply source and a specific circuit are electrically connected to each other through a transistor in which a channel formation region is formed using an oxide semiconductor. The hydrogen concentration of the oxide semiconductor is lower than or equal to 5×1019 (atoms/cm3). Therefore, leakage current of the transistor can be reduced. As a result, power consumption of the semiconductor device in a standby state can be reduced. Further, the semiconductor device can have a long lifetime.

Abstract: Provided is a device for estimating secondary cell status using multiple models. The device for estimating secondary cell status uses multiple models, model 1, model 2, and model 3, to estimate the status of respective secondary cells. An arithmetic unit compares the estimated voltage values obtained from model 1, model 2, and model 3 with measured voltage values, sets the model having the highest correlation as the optimal model, optimizes the parameters of such model, and estimates secondary cell status.

Abstract: A secondary-battery protecting integrated circuit includes, a power supply terminal connected to a positive electrode of the secondary battery, a ground terminal connected to a negative electrode, an input terminal connected to the negative terminal, a control terminal at which a control signal is input, a pull-down resistor connected between the control terminal and the ground terminal, a voltage monitoring circuit monitoring a voltage between the control terminal and the ground terminal, a voltage comparison circuit configured to compare a voltage at the control terminal with a voltage at the input terminal; and a control circuit configured to perform an operation in which a discharge operation of the secondary battery is prevented by turning off a discharge control transistor included in the switch circuit in response to the voltage monitoring circuit detecting that the voltage between the control terminal and the ground terminal is greater than a first threshold.

Abstract: An In-Building Communications system is disclosed which permits communication in tunnels, underground parking garages, tall buildings such as skyscrapers, buildings having thick walls of concrete or metal, and/or any building which has communication dead zones due to electromagnetic shielding. The invention includes a portable bi-directional amplifier (BDA) system, an outdoor antenna system attached to the building or independently mountable, an indoor antenna system attached to the building or independently mountable inside the building, and a standardized, In-Building Communications (IBC) interface box affixed preferably to the exterior of the building. The interface box communicates with antenna systems attached to the building.

Abstract: Various embodiments determine a remaining battery capacity of a battery in an energy storage battery support system. In one embodiment, a battery is operated at a state of charge which may include being charged, being discharged, and being idle. A change in the state of charge is detected after a duration of time. The amount of remaining battery capacity is calculated based upon the duration of time and the state of charge of the battery during the duration of time. The operating, detecting and calculating are repeated until the amount of remaining battery capacity reaches a predetermined value. The remaining battery capacity after the duration of time is calculated using the battery capacity at the beginning of the duration of time. The battery may be used as an energy source in an electric power distribution grid. The battery is replaced when the remaining battery capacity reaches an end-of-useful-life value.

Abstract: An electrical combination includes a power tool and battery pack. The battery pack includes a detection terminal and a normal terminal, two detection circuits, and a control module for respectively connecting with the two terminals. The control module can detect and compare voltage signals in the detection circuits. One detection circuit is used to provide a comparing reference and the other detection circuit is used as a circuit of the terminals and to apply the same voltage on the terminals. A difference between voltages sampled from voltage sampling points and a predetermined value is compared to determine whether the resistance of the terminals is increased. The method can help to decide whether the connection of terminals is good or not.

Abstract: A battery charger monitors the voltages across individual batteries in a battery system during recharging of the batteries. The charger identifies a least voltage measurement and identifies the batteries in the battery system that have a voltage measurement that is a predetermined voltage differential above the least voltage measurement. A controller in the charger operates switches to connect a resistor in parallel across each battery having a voltage measurement above the least voltage measurement by the predetermined voltage differential in a one-to-one correspondence to reduce the charge returned to the battery during recharging.

Abstract: A boat is disclosed. The boat includes an electrical storage having a storage element electrically connected to a positive and a negative pole. The boat also includes a water sensor configured to determine whether one of the poles is in contact with water, and a disconnection device operatively connected to the water sensor and configured to interrupt the electrical connection between at least one of the poles and the storage element when the water sensor determines that one of the poles is in contact with water.

Abstract: An electrical storage system includes an electrical storage device (10); a relay (SMR-B, SMR-G, SMR-P) switching between on/off states; a current interruption circuit (60) interrupting energization of the electrical storage device by causing the relay to switch from the on state to the off state; and a controller (30) executing drive control over the relay. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating overcharging/overdischarging of any one electrical storage block by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; and a transistor (68) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit. The controller determines an energization state of the electrical storage device by executing control for turning on the relay while control for causing the alarm circuit to output the alarm signal is being executed.

Abstract: A battery management system can be provided which can include a plurality of battery management units connected in series and a host controller. Each battery management unit can include a battery cell, an isolation element, and at least one bypass element. The isolation element is connected with the battery cell in series, and the battery cell is isolated by turning off the isolation element. The bypass elements can be in parallel connection with the battery cell and isolation element, and the battery cell is bypassed by turning on the bypass element. A battery management method can include: activating the battery cell of the battery management unit by turning on the isolation element and turning off the bypass elements of the battery management unit; and deactivating the battery cell of the battery management unit by turning off the isolation element and turning on the bypass elements of the battery management unit.