250results about "Load supplying circuits" patented technology

The present invention provides a topology, method and system for bi-directional power conversion of excitation power supply for power battery testing, wherein the topology comprises a three-phase PWM (pulse width modulation) converter, a high-frequency isolation three-level LLC (logical link control) resonant converter and a DC-DC (direct current) converter forming a topology structure for a three-stage power conversion; an input end of the three-phase PWM converter is connected to a power grid side; the high-frequency isolation three-level LLC resonant converter is connected between the three-phase PWM converter and the DC-DC converter in series and is configured for realizing bi-directional DC voltage conversion and isolation, and to raise a busbar voltage between the high-frequency isolation three-level LLC resonant converter and the DC-DC converter; and, the DC-DC converter is configured to generate charging and discharging excitation currents for a power battery testing.

Disclosed is a power electronic intelligent battery unit, including: a battery module, the battery module comprising a plurality of battery cells connected in series and sensors for measuring the voltage, current, pressure and / or temperature of the battery cells; and an intelligent battery interface, the intelligent battery interface being connected to an output side of the battery module and the sensors, and the intelligent battery interface having a power interface and an information interface for the outside, wherein the battery module monitors the voltage, current, pressure and / or temperature information of the battery cells, while providing or absorbing power by means of the intelligent battery interface.

A device to process data associated with a surgical event of a surgery may include a processor. The processor may be configured to receive multiple data streams during the surgical event. The processor may be configured to select a primary data stream based on a surgical data interface via which the primary data stream is received. The processor may be configured to select a secondary data stream based on a surgical data interface via which the second data stream is received. The processor may be configured to identify the surgical data interfaces. The processor may be configured to generate situational data associated with the primary data stream based on the secondary data stream. The situational data may indicate a medical decision-making factor of the surgical event. The primary data stream and the situational data may be sent during the surgical event.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources, and an adder module including a processor. The processor is configured to execute instructions to selectively connect the supercapacitor or the electrochemical battery to an electric drivetrain to propel the vehicle. The processor may be configured to measure the selectable power sources and determine a set of the selectable power sources to connect to the system.

A system includes: an inverter configured to convert DC power to AC power, wherein the inverter includes: a power module including: a first substrate, a second substrate including a source plane and a gate plane separated from the source plane by a full trench, the source plane including a step trench, and the gate plane including an electrical connection through the second substrate to a gate input connection of the power module, a semiconductor die disposed between the first substrate and the second substrate, the step trench formed in a portion of the source plane corresponding to an edge of the semiconductor die, and the semiconductor die including a gate connected to the gate plane, and a sinter element disposed between the semiconductor die and the second substrate to connect the semiconductor die to the second substrate; a battery; and a motor.

A system for heating a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the first switch and a second switch. The system includes a processor in communication with the switches to execute instructions to control the switches to controllably source current to and from the battery, wherein the sources current to and from the battery may be of arbitrary shapes tuned to harmonics optimized for heat generation.

One aspect of the invention relates to a bidirectional on-board charger 2 for a vehicle 1, comprising:a bidirectional AC-to-DC converter 8 designed to supply power to an electrical power supply socket 6 for an external electrical device;means for detecting an electrical insulation fault 9, connected to a phase line 12 and to a neutral line 13 of said electrical power supply socket 6; a switch 16 arranged on said phase line 12; a switching means 18 designed to control the switch 16 between a first position P1 in which the means 9 are connected to the socket 6 and a second position P2; a resistor 20 which, when the switch 16 is in the second position P2, is electrically connected to the switch 16 and to a ground 10 of the vehicle.

Systems and methods directed to solar power-assisted hybrid battery balancing are disclosed. For example, operating the solar power-assisted hybrid battery balancing system includes determining accessibility of solar power from a plurality of solar panels and in response to determining solar power is not accessible, activating one or more arrangements of a plurality of switches to enable a battery balancing process including redistribution of stored energy among a plurality of battery cells to maintain a balanced state-of-charge across the plurality of battery cells and transferring of charge between battery cells via a capacitor coupled to output terminals of a solar charge controller. The method includes, in response to determining solar power is accessible, activating one or more other arrangements of the plurality of switches to enable a solar battery balancing process including directing of solar-generated electrical energy among the plurality of battery cells to maintain the balanced state-of-charge.

A method for discharging at least one battery cell of a battery for a motor vehicle in the event of at least one specific detected fault concerning the battery. The specific fault is detected and, depending on the detection of the fault, an emergency discharge process for at least partially discharging the at least a battery cell is initiated. In doing so, the at least one battery cell is at least partially discharged during the emergency discharge process via at least one on-board electrical consumer of the motor vehicle external to the battery and / or a power supply system external to the motor vehicle.

The inventive concepts provide a bidirectional switching converter including a first power metal oxide semiconductor field effect transistor (MOSFET) connecting an input voltage node to a switching node, a second power MOSFET connecting the switching node to a ground node, and a zero current detection (ZCD) auto-calibration circuit configured to perform one of an operation of generating a first offset for varying a turn-on time of the first power MOSFET according to an operation mode and an operation of generating a second offset for varying a turn-on time of the second power MOSFET according to the operation mode.

A computer system determines a compensation current adapted to counteract at least parts of a charge equalization current expected to be generated by an activation of an additional battery pack in parallel connection with one or more currently activated battery packs. The compensation current is determined as a current range between a lower and upper compensation current limits. The lower limit is based on a voltage of the additional battery pack, and a voltage and impedance of the currently activated battery packs. The upper limit is based on a maximum discharge ability of a system powered by the currently activated battery packs, a maximum discharge ability of the currently activated battery packs, a voltage and impedance of the additional battery pack, and a voltage and impedance of the one or more currently activated battery packs.

A battery pack includes a set of blocks of battery cells, where each of the blocks is connected in series, and a set of AC impedance circuits, where each of the AC impedance circuits is electrically connected to at least one of the blocks of battery cells in the set of blocks of battery cells to apply an AC excitation signal to the at least one of the blocks in the set of blocks. The battery pack includes a controller configured to: calculate an impedance value for each of the at least one of the blocks of battery cells based on the AC excitation signal applied to each of the at least one of the blocks of battery cells, and adjust a parameter of the battery pack based on the calculated impedance value for each of the at least one of the blocks of battery cells.

Electrochemical cell and battery management systems comprise at least one battery comprising two or more strings of cells, each string of cells comprising two or more cells. The system includes a multiplexing switch apparatus connected to each string of cells and a controller. the controller is used to control various aspects of the charge and / or discharge of the electrochemical cell and / or battery.

A nicotine delivery device (200) for generating a mist containing nicotine for inhalation by a user. The device comprises a mist generator device (201) and a driver device (202). The driver device (202) is configured to drive the mist generator device (201) at an optimum frequency to maximise the efficiency of mist generation by the mist generator device (201).

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes power packs and a photovoltaic array with interconnected photovoltaic cells that supplies electric charge to the power packs for charging the power packs. A charge management database stores data tracking respective charge cycles of the power packs based on the charging and discharging of the power packs. An energy control system controls flow of power in the system to control the charging and the discharging of the power packs, optimizes the flow of power in the system based on the respective charge cycles as tracked in the data stored in the charge management database, and updates the charge management database based on the optimization(s). An output interface outputs a status of the power packs based on the flow of power, for instance to indicate effect(s) of the optimization(s) on the power packs.

Apparatuses, systems, and methods are described for providing a sensor device. The system includes a control unit and a sensing unit. The sensing unit is coupleable to the control unit via a current loop and includes an input terminal coupleable to the current loop, at least one energy storage unit configured to be charged to a first voltage from the input terminal, a sensing element configured to sense an environmental parameter, wherein the sensing element receives power from the at least one energy storage unit at a second voltage, and wherein the second voltage is lower than the first voltage, a controller configured to receive a sensor signal from the sensing element and to generate an output signal, and an output terminal coupleable to the current loop and configured to transmit output corresponding to the output signal to the control unit via the current loop.

Power packs configured to supply power to a common load are provided. A power pack includes a first power source; a second power source; at least one adapter configured to receive the common load and electrically couple the common load to at least one of the first power source or the second power source for supplying power to the common load; a tether interface electrically coupled to the at least one adapter, the first power source, and the second power source and configured to arrange the first power source and the second power source in series or in parallel; and a control circuit comprising at least one controller for performing a plurality of operations.

A charging module for an electric vehicle (EV), the charging module which includes: a high frequency AC interface, configured to receive and externally output AC at a high frequency of 70 kHz-95 kHz in a high frequency AC mode, a DC interface, configured to receive and externally output DC in a DC mode, a rectification component, a first switch configured to switch the charging module between the high frequency AC mode and the DC mode, and optionally, a second switch configured to switch between the existing EV onboard charger and the charging module, wherein the charging module is configured to be coupled to an existing EV onboard charger, to enable the onboard charger to receive and externally output high frequency AC and DC.

This application provides an uninterruptible power supply (UPS), an uninterruptible power supply control method, a related apparatus, and a system. In one example, the UPS determines a target value of a SOC of a battery of the UPS; and controls, based on the determined target value, a rectifier circuit and a direct current-to-direct current circuit in the UPS to charge the battery to make the SOC of the battery equal to the target value, or controls, based on the determined target value, an inverter circuit and a direct current-to-direct current circuit in the UPS to discharge the battery to make the SOC of the battery equal to the target value.

A drive system includes: a first inverter that outputs first alternating current by switching first direct current with a switching element (first switching element), to an electric motor generating power for propelling a vehicle; a second inverter that supplies, to the electric motor, second alternating current having the same frequency as the first alternating current by switching direct current with a switching element (second switching element); and a control part that performs PWM control on the first inverter and the second inverter such that an ON-time of the first switching element in one cycle of the first alternating current becomes longer than an ON-time of the second switching element when the direct current is smaller than the direct current.

A voltage conversion circuit and a portable power source are described herein. The voltage conversion circuit may include a first DCDC converter, with a first terminal connected to a battery and a second terminal connected to a first charging interface; a second DCDC converter connected in parallel to the first DCDC converter, with a first terminal connected to the battery and a second terminal connected to a second charging interface. A switch assembly may be connected in parallel between the first DCDC converter and the second DCDC converter. A microprocessor may enable at least one of the first DCDC converter and the second DCDC converter to be in operation by controlling the on / off of the switch assembly. This assembly may share heat losses between the DCDC converters in a small volume package.

The present disclosure provides a power supply circuit, a sensing device and an application thereof, comprising: a transducer; an energy storage assembly operably connected to the transducer; a power supply assembly electrically connected between the energy storage assembly and a power consumption module so that the energy storage assembly does not supply power to the power consumption module when the power consumption module is in a non-powered state and the output voltage is within a specified voltage interval; and the energy storage assembly is caused to supply power to the power consumption module when the output voltage is within a non-specified voltage interval.

According to one embodiment, a power supply / demand device includes a virtual synchronous inverter and a storage battery. The virtual synchronous inverter is connected to a power system. Charging and discharging of the storage battery are controlled by the virtual synchronous inverter. The virtual synchronous inverter is connected to the power system in parallel with other inverters. The virtual synchronous inverter is capable of calculating a first standby time having any length and performing control of the storage battery corresponding to an operation instruction after a lapse of the first standby time, when receiving the operation instruction accompanied by output of power to the power system or input of power from the power system.

The present invention relates to an aerosol generating device comprising a cavity for receiving an aerosol-forming substrate, an electric heater arranged to heat the aerosol-forming substrate when the aerosol-forming substrate is received in the cavity, a rechargeable power source, and a controller arranged to control the supply of power from the rechargeable power source to the electric heater during a first time period and a second time period following the first time period. The controller is arranged to determine an initial temperature of the electric heater and to determine a rate of temperature rise of the electric heater during the first time period by determining a time taken to raise the temperature of the electric heater from a first predetermined temperature to a second predetermined temperature during the first time period. The controller is also arranged to adjust the supply of power from the power source to the electric heater during the second time period based on the initial temperature of the electric heater and based on the determined rate of temperature rise of the electric heater during the first time period. The present invention relates to an aerosol generating system comprising an aerosol generating device. The present invention relates to a method of controlling an aerosol generating device and a computer program for carrying out the method.

A power conversion apparatus includes: an upper arm switch (SWH) and a lower arm switch (SWL) that are connected in series; a first capacitor (21) that is electrically connected in parallel to the upper arm switch and the lower arm switch; a coil (11) of which a first end side is electrically connected to a connection point between the upper arm switch and the lower arm switch; a second capacitor (90); a high-potential-side electrical path (22H) that is electrically connected to the upper arm switch; and a low-potential-side electrical path (22L) that is electrically connected to the lower arm switch. One of the high-potential-side electrical path and the low-potential-side electrical path and a second end side of the coil are electrically connected via the second capacitor. The other of the high-potential-side electrical path and the low-potential-side electrical path and the second end side of the coil are electrically connected via a power storage unit (33). The power conversion apparatus includes a control unit (100) that performs switching of the upper arm switch and the lower arm switch.

One aspect of the present disclosure is a battery pack that supplies electric power to an electric work machine, comprising a first battery-signal terminal and a second battery-signal terminal. The first battery-signal terminal outputs, to the electric work machine, a first signal indicating that discharging is to be prohibited or permitted. The second battery-signal terminal outputs, to the electric work machine, a second signal indicating that discharging is to be prohibited or permitted.

The present disclosure provides an on-board charger and inverter system (100, 200, 300) for a vehicle. The system comprises a unified charger cum traction inverter (UCCTI) configured for bidirectional conversion between alternating current and direct current, a rechargeable battery coupled to the UCCTI (1, 9, 16), and a dual three-phase permanent magnet synchronous motor (PMSM) (3, 11, 18) having a first three-phase terminal set (3a) coupled to the UCCTI (1, 9, 16) and a second three-phase terminal set (3b) selectively connectable to an external alternating current source (5, 13, 20). A controller (4, 12, 19) configures the dual three-phase PMSM (3, 11, 18) to operate as a transformer during charging or as a propulsion motor during traction. The UCCTI (1, 9, 16) operates in a first charging mode using three-phase alternating current, a second charging mode using single-phase alternating current, a third traction mode supplying three-phase alternating current to the PMSM (3, 11, 18), and a fourth traction mode supplying single-phase alternating current to the PMSM (3, 11, 18), thereby enabling integrated charging and propulsion functions.

An AC battery system is provided herein and comprises a plurality of microinverters, a first battery pack comprising a first plurality of battery cells and a second battery pack comprising a second plurality of battery cells. Each of the first plurality of battery cells and the second plurality of battery cells are connected to the plurality of microinverters via a first bus and a second bus comprising a respective first semiconductor switch and a second semiconductor switch, and a controller operatively connected to the plurality of microinverters and the first plurality of battery cells and the second plurality of battery cells and configured to control the plurality of microinverters to at least one of open or close the first semiconductor switch and the second semiconductor switch based on a voltage and an impedance of a first cell of the first plurality of battery cells and a first cell of the second plurality of battery cells.

Systems and methods for remote power tool control are provided. In one example, a battery pack is coupled to a power tool device. The battery pack includes a pack transceiver and a pack electronic processor. The pack electronic processor is coupled to the pack transceiver and is configured to determine that the power tool device is remotely controllable. The pack electronic processor is further configured to receive, wirelessly via a pack transceiver of the battery pack, a remote control command from a mobile device, and to provide the remote control command to the power tool device. The system further includes a tool electronic processor of the power tool device in communication with the pack electronic processor. The tool electronic processor is configured to control the power tool device to perform an action specified by the remote control command in response to receiving the remote control command.

A power conversion circuit is coupled to a motor and a wireless charging transmitter device. Power conversion circuit includes an inverter and a processor. Inverter includes three half-bridge circuits. Three half-bridge circuits are respectively coupled to a battery, motor and wireless charging transmitter device. Each of three half-bridge circuits includes two switches. Processor is coupled to switches of three half-bridge circuits and generates a plurality of control signals at a first stage to respectively control switches according to a first level of each of control signals, so that battery supplies power to motor. Processor adjusts first level of each of control signals to a second level during a second stage to turn off one of three half-bridge and to turn on switches of the other two of three half-bridge alternately so as to adjust a power supply of wireless charging transmitter device to charge battery to a target power.