196results about "Energy efficient vehicular charging" patented technology

Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and / or DC outputs. Each module can be independently monitored and controlled.

A charging system includes: a power converter configured to receive power from an external power network to generate charging power for electric buses; power rails electrically connected to the power converter and installed at a predetermined height according to a layout of a garage; a first charging network configured to horizontally move above a floor in the garage along the electric power rails to upper sides of the electric buses to contact the electric buses; a second charging network electrically connected to the power converter and providing a charging zone on a bottom surface of the garage by reflecting the layout to contact the electric buses parked in the charging zone; and a station controller configured to control a charging sequence of the electric buses by analyzing position information of the electric buses and calculating a shortest movement path and a charging order of the first charging network.

Provided are a method for charging a traction battery and a battery management system. The method for charging the traction battery is applied to a battery management system, where the method includes: obtaining an SOH of the traction battery; in a charging process of the traction battery, obtaining an SOC of the traction battery; determining an SOC interval value corresponding to discharging or stopping being charged of the traction battery based on the SOH of the traction battery; and when the SOC of the traction battery changes by the SOC interval value, controlling the traction battery to discharge or stop being charged. Through the technical solution, in the charging process of the traction battery, the discharging or the stopping being charged of the traction battery can be controlled to reduce the risk of lithium precipitation in the traction battery and improve the safety performance of the traction battery.

An electric vehicle (EV) charging station for fast charging (e.g. 5 to 15 minutes) an electric vehicle (EV). The EV charging station can be configured to charge multiple EVs and multiple conventional vehicles at the same time. The EV charging station can include a power source, an electric reservoir receiving power from the power source, an AC to DC power converter for receiving AC power from the power source and converting the AC power to DC power for supplying DC power to the electric reservoir, an EV charger receiving DC power from the electric reservoir; and a first DC to DC converter receiving DC power from the electrical reservoir and converting the DC power to DC power suitable for charging the electrical vehicle.

A system for power management of an automated storage and retrieval system includes a plurality container handling vehicles with at least one rechargeable power source for handling containers in a three dimensional underlying storage grid, a charging device for charging the at least one rechargeable power source, a power source for supplying power to the storage and retrieval system, and a monitoring system for monitoring energy prices. The monitoring system is configured to continuously update a power manager with energy prices. The power manager is configured to be updated with information regarding the level of charge of the rechargeable power sources and current resources in terms of the capacity and usage requirements of the container handling vehicles. The power manager is configured to adjust a power strategy of the automated storage and retrieval system according to the energy prices and to control the stored energy as an additional power source for the storage system during periods of high energy cost.

Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and / or DC outputs. Each module can be independently monitored and controlled.

Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and / or DC outputs. Each module can be independently monitored and controlled.

A battery charging system for a hybrid electric vehicle includes: a battery, a battery management system, and a support unit. The support unit includes an electronic control unit provided with a predefined motor speed constant (S) and a predefined state of charge value (SoC). The electronic control unit receives a real-time motor speed (SRT) from one or more sensing units and a real-time state of charge value (SoCRT) for the battery from the battery management system. The electronic control unit generates one of a first activation signal and a second activation signal based on one of the real-time motor speed (SRT) and the real-time state of charge value (SoCRT) of the battery. The battery management system initiates a voltage source inverter charging mode upon generation of the first activation signal and a boost converter charging mode upon generation of the second activation signal.

An electrical converter may include AC terminals, a first and second DC terminal, and converter modules. Each of the converter modules has an AC node. The second DC terminal forms a common node of the converter modules. A connection between the AC nodes of the converter modules and the AC terminals is reconfigurable allowing the electrical converter to operate according to a first mode of operation converting between a first AC signal having a first plurality of phase voltages and the DC signal, in which the converter modules are grouped in first groups, and according to a second mode of operation converting between a second AC signal having a single-phase voltage and the DC signal, in which the converter modules are rearranged in second groups. The electrical converter is configured to operate multiple converter modules assigned to a same group of the first groups and the second groups in parallel.

A power distribution system comprises a plurality of energy storage modules coupled in series. A plurality of electrically isolated power converters are each coupled across one or more of the energy storage modules. When enabled, the power converters provide a low voltage output to an output of the power distribution system. A control system controls the power converters to provide the low voltage output. The control system selectively enables the power converters to balance states of charge of the energy storage modules.

The present invention relates to a reverse buck-boost type integrated charger, and more particularly, to a reverse buck-boost type integrated charger applied to a vehicle in which a replaceable battery is applied. An object of the reverse buck-boost type integrated charger according to the present invention is to provide a reverse buck-boost type integrated charger which is relatively economical, can be implemented in a small volume, and has a simple structure in an electric vehicle in which a replaceable charging system is applied.

A vehicle is operable in three modes of operation. The vehicle includes a first electromagnetic device, a second electromagnetic device electrically coupled to the first electromagnetic device, and an engine coupled to the first electromagnetic device and configured to drive the first electromagnetic device to provide electrical energy. In each of the three modes of operation, whenever the engine drives the first electromagnetic device to provide the electrical energy, the first electromagnetic device operates without providing the electrical energy to an energy storage device.

When regeneration operation is being performed, electric power on a main-machine side is supplied to an auxiliary-machine side, a voltage on the auxiliary-machine side is controlled to become a first voltage value predetermined on the basis of operating voltage specifications of an auxiliary apparatus, a generator on the auxiliary-machine side is deactivated to stop supply of electric power to the auxiliary-machine side, and electric power on the auxiliary-machine side is supplied to a power storage apparatus. When the regeneration operation is ended, the supply of the electric power from the main-machine side to the auxiliary-machine side is stopped, the generator on the auxiliary-machine side is activated, the generator on the auxiliary-machine side is controlled such that a voltage on the auxiliary-machine side becomes the first voltage value, electric power of the power storage apparatus is supplied to the auxiliary-machine side, and the voltage on the auxiliary-machine side is controlled to become a second voltage value higher than the first voltage value. This enables reduction of fluctuations of a voltage supplied to auxiliary machines at a time of switching of regeneration operation by travel motors.

A DC charging circuit includes a first inverter module corresponding to a first battery; a second inverter module corresponding to second battery; and DC terminals tapping off a high-side of the first inverter module and a low-side of the second inverter module. A front-end switching circuit is also described. The front-end switching circuit controls charging input from a DC source to at least one inverter circuit, each inverter circuit corresponding to at least one respective battery. The front-end switching circuit is an add-on for interfacing to high voltage DC inputs.

Charging device comprising: a battery (106) suitable and configured to store DC voltage; first and second motors (101, 102) suitable and configured to operate as a motor or a generator; first and second inverters (103, 104) suitable and configured to operate the first and second motors (101, 102); a voltage transformer (105) suitable and configured to increase the DC voltage of the battery (106) to supply it to the first and second inverters (103, 104) and to increase the DC voltage of the inverter to supply it to the battery (106); and a charging controller (200) suitable and configured to operate the first and second inverters (103, 104) as a booster or generator.to operate voltage amplifiers or to operate the voltage transformer (105) as a step-down converter, according to a voltage which is input via a neutral point of the first and second motors (101, 102) and the voltage of the battery (106), wherein the charging control element (200) is configured to switch off the voltage transformer (105) so that the voltage which is increased by the first inverter (103) or the second inverter (104) charges the battery (106) when the voltage which is input via the neutral point of the first and second motors (101, 102) is less than the battery voltage.

Vehicle (112), comprising: a pre-charging circuit designed to selectively couple a resistor (202, 302, 402) via either a first (206, 306, 406) or a second contactor (208, 308, 408) designed to selectively couple terminals of a battery (124) to a load bus (152); and a controller (220, 320, 420) programmed to couple the resistor (202, 302, 402) via the second contactor (208, 308, 408) in response to a pre-charge request in a case where the first contactor (206, 306, 406) is closed when commanded to open and the second contactor (208, 308, 408) is open, in order to pre-charge the load bus (152), characterized by the fact that The controller (220, 320, 420) is further programmed to, in response to the pre-charge request in a case where both the first contactor (206, 306, 406) and the second contactor (208, 308, 408) are open and following an immediately preceding pre-charge request that resulted in the resistor (202, 302, 402) being coupled via the first contactor (206, 306, 406), couple the resistor (202, 302, 402) via the second contactor (208, 308, 408) in order to pre-charge the load bus (152).

In a vehicle power supply device mounted on a vehicle and obtaining a low voltage power supply from a high voltage power supply via a step-down unit, electric shock of a human body is prevented without using an insulation unit such as a transformer. A prescribed group of storage elements is selectively connected to a low voltage load from a high voltage power supply formed by connecting storage elements in series, thereby performing power conversion from high voltage to low voltage, and in this structure, during cutting off of a high voltage circuit by a cutting unit provided between the high voltage power supply and a high voltage load, a leakage resistance from the high voltage circuit to ground is measured, and when the value is below a prescribed value, power supply from the high voltage power supply to the high voltage load device is cut off, thereby preventing electric shock.

A computer system can remotely manage a vehicle's operational settings. The computer system can cause operational settings data to be downloaded to a vehicle to control one or more operations of the vehicle. The computer system can generate download event information indicating the operational settings data downloaded to the vehicle and a user associated with the vehicle. The computer system can access a pricing structure associated with operational settings. The computer system can charge the user based on the pricing structure and the download event information.

The present invention discloses a two-output charging circuit and a method for controlling its auxiliary circuit switch. The two-output charging circuit includes two first-stage switch transistors in the half-bridge inverter circuit generating dead time at changing-over and turn-on, and the second-stage switch transistor being turned off within the dead time. In the present invention, making use of a magnetic core to return from the reverse in its bidirectional magnetization process generates dead time, and controlling the time sequence of the switch device of the post-circuit in the dead time abates the voltage stress of the synchronous rectifier diode and reduces the loss of the absorption circuit of the synchronous rectifier circuit.

A method for starting a hybrid fuel cell system (10), the method comprising: Providing a high-voltage electric bus (16); Providing a fuel cell stack (12) electrically coupled to the high-voltage electrical bus (16); Providing a high-voltage direct current power storage device (14) electrically coupled to the high-voltage electrical bus (16); Providing a diode (28) in the high voltage electrical bus (16) that prevents access of voltage from the high voltage storage device (14) to the fuel cell stack (12); Providing a bypass line (30) around the diode (28); Providing a fuel cell stack switch (18) between the fuel cell stack (12) and the high voltage electrical bus (16); electrical coupling of system loads to the high-voltage electrical bus; electrically coupling a low voltage / high voltage boost converter (36) to the high voltage electrical bus (16); Closing a bypass switch (32) in the bypass line (30) to allow electrical power from the high voltage direct current storage device (14) to bypass the diode (28) and operate the system loads (24); Starting the fuel cell stack (12) using the system loads (24); Determining whether an output voltage of the fuel cell stack (12) is stable; Opening the bypass switch (32) when the voltage of the fuel cell stack (12) is stable; and Closing the fuel cell stack switch (18) after opening the bypass switch (32).

The present invention discloses a double-edge trigger circuit for OBC charging wake-up, including a wake-up switch circuit connected to a circuit to be awakened, wherein the wake-up switch circuit outputs a wake-up trigger signal to wake up the circuit to be awakened when in operation, and also includes a trigger circuit connected to the wake-up switch circuit and used to control the wake-up switch circuit to send the wake-up trigger signal, wherein the trigger circuit can control the wake-up switch circuit to output the wake-up trigger signal when the connected CP signal is at a rising edge or a falling edge. Compared with the prior art, the present invention has the characteristics of rising and falling double-edge triggering, which can meet the functions of OBC plug-in wake-up, pull-out wake-up, and scheduled charging during charging. It has the advantages of simple circuit and low cost, and the wake-up does not require the participation of the MCU controller, has high reliability, and has low static current in sleep mode.

The invention relates to a charging device (100) having a first connection (110_1, 110_2) on the input side for connection to an electrical energy source (200), a second connection (190_1, 190_2) on the output side for connection to a battery (300) to be charged, and a transformer (150), a primary winding (150_1) of which is electrically connected to the first connection (110_1, 110_2) by means of a primary circuit (400) and a secondary winding (150_2) of which is electrically connected to the second connection (190_1, 190_2) by means of a secondary circuit (500).

In a conversion device, a second conversion circuit may be connected to a second coil of a transformer to perform bidirectional power conversion. Another second conversion circuit may be connected to a second coil of another transformer to perform bidirectional power conversion. A third conversion circuit may convert AC power input to another second coil of the transformer to DC power and output the DC power to a common path. Another third conversion circuit may convert AC power input to another second coil of the other transformer to DC power and output the DC power to the common path.

A series circuit includes a capacitor connected in series with output terminals of a power converter. The power converter provides an auxiliary voltage and a controller controls the auxiliary voltage according to a selected function, such that the series circuit behaves as a capacitor, an inductor, or an impedance, based on the selected function. The controller may sense a voltage across the capacitor and use the sensed voltage to control the auxiliary voltage according to the selected function. The series circuit may be connected in parallel with output terminals of an AC-DC converter, wherein the series circuit operates according to a selected mode to produce the auxiliary voltage, and the auxiliary voltage substantially cancels a low frequency AC voltage ripple across the capacitor, such that a substantially pure DC output voltage is delivered to the load.

System for controlling the charging power of an environmentally friendly vehicle, comprising: a battery (100), an inverter (300) having a plurality of branches (310, 320, 330, 340) which have a plurality of power conversion devices (312, 314, 322, 324, 332, 334, 342, 344), wherein the branches (310, 320, 330, 340) are supplied with power by being connected to a power supply unit (200), and wherein both ends of each of the branches (310, 320, 330, 340) are connected to the battery (100), one or more switches (400) arranged between one or more of the branches (310, 320, 330, 340) and the power supply unit (200), and a control device (500) which is configured to change a power transmission path from the power supply unit (200) by determining the phase of the power supplied by the power supply unit (200) and actuating the switch (400) based on the phase of the supplied power, where the inverter (300) has: a first branch (310), a second branch (320), a third branch (330) and a fourth branch (340), wherein the first branch (310) comprises a first power conversion unit (312) and a second power conversion unit (314), the second branch (320) has a third power conversion device (322) and a fourth power conversion device (324), the third branch (330) has a fifth power conversion device (332) and a sixth power conversion device (334), and the fourth branch (340) has a seventh power conversion device (342) and an eighth power conversion device (344).

A charging device, a vehicle, and a method for controlling charging of the charging device are provided. The charging device (1) includes a first DC conversion module (10) that converts a DC current signal output from a power battery (16) into a DC current signal required for a storage battery (15) and includes a first half-bridge LLC circuit unit (11) and a second half-bridge LLC circuit unit (12) arranged in parallel, and a control module (20) connected to the first half-bridge LLC circuit unit (11) and the second half-bridge LLC circuit unit (12), respectively, that obtains a total output current of the first DC conversion module (10) and controls the first half-bridge LLC circuit unit (11) and the second half-bridge LLC circuit unit (12) to alternately operate when the total output current is less than a current threshold. The charging device (1) can reduce switch losses and improve charging efficiency.

Embodiments of the inventive concept measure the amount of electrical power being consumed in one or more houses or buildings, before the utility meter or meters. These measurements are used by a smart load manager (SLM) apparatus, in addition to information about the maximum capacity of the electrical lines that are being measured, to maximize the number of electric vehicle supply equipment (EVSE) units that can be installed in the one or more buildings, and maximize the amount of power that is available for electric vehicle (EV) charging at any given time.

The present disclosure provides an "integrated DC vehicle charger." A vehicle has a drive system including a battery, two inverters, a motor, and a switch. The vehicle also has a controller that operates the switch to couple one of the inverters to a charging port and operates at least one of the inverters to cause DC current from the charging port to flow through the one of the inverters, the motor, and the other of the inverters to the battery in sequence in response to a charging mode.

An apparatus for a power system. The apparatus includes multiple electrical power sources and an enclosure operatively connected to the power sources at multiple input terminals. Multiple loads operatively connect to the enclosure at multiple output terminals by multiple cables. The enclosure includes the input terminals and the output terminals and a controller unit. Multiple selection units operatively connect to the controller unit, multiple power converters are connected to multiple connection paths. The selection units connect to at least one of multiple switches connected in the connection paths. Multiple sensor units are operatively attached to the controller unit which is configured to sence multiple parameters in the connection paths. Responsive to the parameters sensed by the sensor units, the selection units select the connection paths between the electrical power sources and the loads.

In the case where the regenerative operation is in progress, the electric power from the main machine side is supplied to the sub machine side, the voltage of the sub machine side is made to be a first voltage value which is prescribed in advance based on the operation voltage specification of the sub machine device, the electric power to the sub machine side is stopped by stopping the electric generator of the sub machine side, and the electric power of the sub machine side is supplied to the electric storage device. In the case where the regenerative operation has ended, the supply of the electric power from the main machine side to the sub machine side is stopped, and the electric generator of the sub machine side is controlled so that the electric generator of the sub machine side is started, the voltage of the sub machine side is made to be the first voltage value, and the electric power of the electric storage device is controlled so that the electric power of the electric storage device is supplied to the sub machine side and the voltage of the sub machine side is made to be a second voltage value which is higher than the first voltage value. Thus, it is possible to suppress the variation of the supply voltage supplied to the sub machine at the time of switching the regenerative operation based on the traveling motor.