Abstract: A power supply circuit supplies power from a first battery to a first load. The first load includes a capacitor that needs to be charged before activation. The power supply circuit includes: a main circuit that supplies power from the first battery to the first load; and a backup circuit having a precharge circuit for charging the capacitor and that supplies power from the first battery to the first load. When charging the capacitor, power is supplied from the first battery to the first load by using the backup circuit. After charging of the capacitor is completed, power is supplied from the first battery to the first load by using the main circuit.

Abstract: A control system may include a direct-current (DC) power bus for charging (e.g., trickle charging) internal energy storage elements in control devices of the control system. For example, the control devices may be motorized window treatments configured to adjust a position of a covering material to control the amount of daylight entering a space. The system may include a DC power supply that may generate a DC voltage on the DC power bus. For example, the DC power bus may extend from the DC power supply around the perimeter of a floor of the building and may be connected to all of the motorized window treatments on the floor (e.g., in a daisy-chain configuration). Wiring the DC power bus in such a manner may dramatically reduce the installation labor and wiring costs of an installation, as well as decreasing the chance of a miswire.

Abstract: A power source supply control device includes controllable switch units configured to switch provision or non-provision of power source electric power supply to respective loads from a main power source, load monitor units configured to monitor a state in each of one or more of the loads connected to downstream sides of switch units, and a switch control unit configured to control on/off of each of the switch units sequentially, based on monitor situations of the load monitor units, in which the switch control unit specifies an energization switching order to the loads according to a predetermined state.

Abstract: A power system (150) operable to implement a power balancing control scheme is provided. In one aspect, a power system (150) includes multiple independent power supplies (182A, 182B) with independent batteries (172A, 172B) feeding onto a common power bus (180). The power supplies (182A, 182B) regulate the voltage on the common power bus (180) at the same time. The power balancing control scheme, when implemented, causes the load on the common power bus (180) to be shared among the individual power supplies (182A, 182B) with a specified load distribution. The specified load distribution can be set or determined to balance the State of Charge (SoC) of the batteries (172A, 172B) over time whilst taking into account the constraints or limits of the elements (172A, 172B, 182A, 182B) of the power system (150).

Abstract: A line driver includes a first resistive component, a second resistive component, an operational amplifier and an adjustable current mirror array circuit. A first terminal of the second resistive component and the first resistive component are coupled to a node, and a second terminal of the second resistive component is coupled to an output terminal. The operational amplifier receives a common mode voltage through the first resistive component, and generates a first signal and a second signal according to the common mode voltage and an input signal. The adjustable current mirror array circuit generates a first current to the node and a second current to the output terminal in response to the first and second signals, and adjusts a ratio of the second current to the first current in response to multiple control bits so as to set an output impedance of the output terminal.

Abstract: A UPS system includes a plurality of UPSs coupled in parallel and each having a bypass switch and a controller that is in communication with the controller of the other UPSs and including: a first unit monitoring the current flowing through a bypass line of its UPS and determining the effective value of the current strength; a second unit collecting the effective values of all of the UPSs having the bypass switch closed and defining a reference effective value corresponding to the lowest collected effective value; a third unit determining a delay for closing the bypass switch of said UPS, the delay being zero if the effective value of its UPS is equal to the reference effective value; and a fourth unit keeping the bypass switch closed if the delay is zero, or opening it for a duration corresponding to the delay before closing it.

Abstract: The technology provides for a wearable device including a body and an accessory adapted to be attached to the body. The body includes a first coil configured to inductively transmit power. The body may further include first power management circuitry configured to control the first coil to transmit power according to a wireless charging standard, and to modulate the power transmitted through the first coil to transmit data according to a wireless communication standard. The accessory may include a second coil configured to inductively receive power. The accessory may further include second power management circuitry configured to control the second coil to receive the power transmitted through the first coil according to the wireless charging standard, and to control the second coil to receive the data transmitted through the first coil according to the wireless communication standard.

Abstract: An acoustic wave filter device includes first and second terminals, a longitudinally coupled resonator coupled between the first terminal and the second terminal, and an inductor connected between a path and a ground potential, the path connecting the first terminal and the longitudinally coupled resonator to each other. The longitudinally coupled resonator includes at least one first IDT electrode coupled to the first terminal, and at least one second IDT electrode connected to the second terminal. A total capacitance value of the at least one first IDT electrode is smaller than a total capacitance value of the at least one second IDT electrode.

Abstract: A vehicle power supply device includes a voltage decrease circuit, a control unit, and a voltage increase power supply unit. The voltage decrease circuit includes multiple MOSFETs as switching elements, receives a voltage supplied from a battery, decreases, by turning on and turning off the switching elements, the received voltage to an operation voltage of an operation target device, and outputs the decreased voltage to the operation target device. The control unit controls an operation of the voltage decrease circuit. The voltage increase power supply unit is connected with the voltage decrease circuit in parallel, receives the voltage supplied from the battery, increases the received voltage, and outputs the increased voltage to the control unit.

Abstract: An energy storage system includes: a battery configured to at least store received electrical energy in a form of direct current, or output the stored electrical energy; a power conditioning system configured to convert an electrical characteristic to charge or discharge the battery; and a battery management system configured to monitor state information of the battery, wherein the battery includes a plurality of battery packs each including a respective plurality of battery cells, wherein the battery management system includes: battery pack circuit boards which are disposed in each of the plurality of battery packs, and configured to obtain state information of the plurality of battery cells included in each battery pack; and a main circuit board coupled to the battery pack circuit boards by a communication line, and configured to receive state information obtained by the battery pack circuit boards from each battery pack.

Abstract: A powered building system that includes an electric power distribution system configured to distribute electrical power to a plurality of receptacles; one or more load sources; and one or more battery systems associated with: a respective receptacle of the plurality of receptacles and a respective load source of the one or more load sources.

Abstract: An energy storage system for a vehicle, includes one or more battery units for storing electrical energy; at least one high voltage switch for connection and disconnection of the one or more battery units to at least one load, such as an electrical machine; a fuse for disconnection of the one or more battery units when the energy storage system experiences an overcurrent being above a predetermined overcurrent value. The energy storage system is configured to during use, identify if a condition has occurred which requires immediate shutdown of the energy storage system.

Abstract: The present disclosure discloses a DC home power consumption system and a wiring method for home appliances based on the system. The system includes: a home power supply configured to supply power for the home power consumption system; a high-voltage DC bus connected to the home power supply and configured to supply power for a high-power appliance; a low-voltage DC bus connected to the home power supply or the high-voltage DC bus and configured to supply power for a low-power appliance.

Abstract: In a charge/discharge control apparatus, a voltage conversion unit performs voltage conversion between a second conductive path and a third conductive path. A first switch switches between an on state where a current is allowed to flow from a first conductive path to the second conductive path and an off state where the current is blocked. A second switch switches between an on state where a current is allowed to flow from the second conductive path to a second power path, and an off state where the current is blocked. An auxiliary charging unit switches between a supply state where power is supplied to a power storage unit via a path different from a path including the voltage conversion unit, based on power supplied via the first conductive path, and a stopped state where the supply of power via the path is stopped.

Abstract: A power supply circuit includes a load cable connecting a first battery and a first load; a load cable connecting a second battery and a second load; a transistor provided between a first generator and the load cable; and a transistor provided between the first generator and the load cable, wherein the transistors are turned OFF in a case where power is to be supplied from the first generator to the first load and second load.

Abstract: A hybrid power module is provided. The power module is associated with a truck having a lift gate. The power module includes a super capacitor comprising a bank of capacitors, with the super capacitor being in electrical communication with an alternator of the truck. The power module also includes a battery, a switch, a DC/DC boost converter, and electrical wiring. The electrical wiring connects the capacitor bank and first battery to the switch, and further connects the switch to a motor for the lift gate. The super capacitor and the first battery are positioned in parallel, with the super capacitor and the first battery residing proximate the lift gate. The super capacitor contains enough energy to power the electric motor for the lift gate through at least two operating cycles without the battery, protecting the lift gate if the battery goes weak.

Abstract: An electrical power system for a delivery vehicle. The power system is used in connection with a vehicle having an engine, and a liftgate powered by an electric motor. The power system includes a first battery, a second battery, and an alternator. The electrical power system also includes a super capacitor. The super capacitor has a first capacitor bank and a second capacitor bank, wherein each of the first and second capacitor banks comprises ultra-capacitor cells placed in series. The first and second capacitor banks reside in parallel. In addition, the first and second batteries reside in parallel with the second capacitor bank. Together, the batteries and the second capacitor bank supply power to the liftgate motor. Finally, the first capacitor bank is in electrical communication with the alternator and supplies power, with the alternator, to a relay start for the delivery vehicle to start the engine.

Abstract: A system and method is provided for data over power in an aircraft that includes a direct current power source for providing power over power lines to devices onboard the aircraft and a data injector coupled to the power lines for digitally modulating radio frequency data onto twisted pair data over power lines to provide data and power to the devices. A controller is coupled to the direct current power source and the data injector for providing the data to digitally modulate the radio frequency onto the twisted pair data over power lines such that power for the devices onboard the aircraft and data for control of the device onboard the aircraft are provided to the devices onboard the aircraft over the twisted pair data over power lines.

Abstract: A wireless power transmission system includes a transmission line, one end of which is connected to a power reception unit configured to receive AC power, a splitting unit, one end of which is connected to an other end of the transmission line and an other end of which is split into a plurality of transmission lines, a first rectification unit connected to a second transmission line of the splitting unit, and a second rectification unit connected to a third transmission line. A transmission line length of the second transmission line and a transmission line length of the third transmission line are each substantially equal to one fourth of a wavelength of the AC power.

Abstract: A flexible load management (FLM) system and technique adaptively monitors and manages power consumption of a premises. The FLM system includes a virtual critical load panel (vCLP) that utilizes circuit breakers in combination with companion modules (i.e., intelligent controllers) to vary a prioritization arrangement of loads in the premises by time of day, season or even dynamically. The vCLP is a prioritized enumeration (i.e., prioritization) of the loads within the premises, wherein the loads are considered sufficiently important such that they are protected by a local power source. The vCLP is dynamically configurable by a user in real time according to an instantaneous demand for the prioritized loads that is used to determine a number of branch circuits associated with the loads that is able to be powered-on at any time.