7results about "Energy efficient vehicular charging" patented technology

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.

The present invention relates to an apparatus and method for controlling an on-board charger for an electric vehicle. An on-board charger and a control method thereof are provided. The on-board charger includes a control pilot (CP) reception module that detects a CP signal, a proximity detection (PD) reception module that detects a PD signal, and a processor configured to repeatedly execute a low power operation mode and a low power stop mode for a predetermined period of time in a standby state for a reservation charge and a completion state of the reservation charge, the low power operation mode supplies a voltage to the CP reception module and the PD reception module, and the low power stop mode blocks the supply of the voltage to the CP reception module and the PD reception module.

This application provides a charging circuit of an on-board charger, an on-board charger, and a charging control method, and relates to the field of on-board charger technologies. A second end of a first power conversion circuit of the charging circuit is connected to a first end of a second power conversion circuit, a high-voltage output end of the second power conversion circuit charges a power battery pack of an electric vehicle, and a first low-voltage output end of the second power conversion circuit supplies power to a low-voltage system of the electric vehicle. The first power conversion circuit is configured to, when the electric vehicle is in a charging mode, convert an alternating current input from a first end of the first power conversion circuit into a direct current and transmit the direct current to the first end of the second power conversion circuit, and is further configured to, when the electric vehicle is in a driving mode, perform direct current conversion on the direct current obtained from the second power conversion circuit and supply a converted current to the low-voltage system. The second power conversion circuit is configured to, when the electric vehicle is in the driving mode, convert a high voltage of the power battery pack into a low voltage, transmit the low voltage to the first low-voltage output end, and output a direct current to the first power conversion circuit.

The embodiment of the present application provides a kind of power conversion system and control method, power conversion system includes multiple power modules, each power module contains first port, second port and third port, wherein, the first port of each power module is connected with external device respectively, the second port of each power module is independent of each other, as independent port output power, the third port of each power module is connected in parallel to form a power bus, and, the power of the third port of each power module flows bidirectionally.Therefore, when the load of output port is unbalanced, the power bus formed by the third port in parallel realizes the power scheduling between multiple power modules, so that the power input by each power module through the first port is as equal as possible, reduce or eliminate the problem of DC link voltage sharing caused by load imbalance.

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

A charging system for electric vehicles is disclosed, which includes at least one charging port with an interface for power exchange with at least one electric vehicle, and at least one power converter for converting power from a power source such as a power grid to a suitable format for charging the vehicle. The power converter can be at a remote location from the charging port, such as a separate room, and / or a separate building.

To provide a power conversion device capable of reducing a noise generated at temperature rising control of a battery pack.SOLUTION: A power conversion device 10 comprises: a rotary electric machine 40 that has respective phase coils 41U, 41V, and 41W; an inverter 30 that has series connection bodies of upper and lower arm switches QUH, QVH, QWH, QUL, QVL, and QWL; and a capacitor 31 connected in parallel with the series connection bodies. Further, the power conversion device 10 comprises: a connection path 60 electrically connecting between an intermediate terminal B of a battery pack 20 and a neutral point O; and a control device 70 that performs switching control of the inverter 30 so as to apply a current between a first accumulator battery 21 and a second accumulator battery 22 configuring the battery pack 20 via the inverter 30, the phase coils 41U, 41V, and 41W and the connection path 60.SELECTED DRAWING: Figure 1