38results about "Electric devices" patented technology

An electrically driven hub includes an electrical mechanism including an electrical motor and a planetary gear system connected to the electrical mechanism. A first fixed shaft is connected to the stator of the electrical motor and a second fixed shaft is connected to a second end of the stator of the electrical motor. The first and second fixed shafts are connected to the vehicle frame. A one-way clutch is connected between a cover of the hub and the planetary gear system so that the hub is rotated when the planetary gear system is activated by the motor.

A power unit including a plurality of series-connected battery modules and a safety circuit.A service plug is inserted from the side of a terminal board of a battery pack, thereby establishing an electrical connection among battery modules. A connector is provided on a back of a terminal cover by way of a projecting section, and a second safety switch is activated by attachment of a terminal cover and insertion of the connector to the terminal board, thereby establishing an electrical connection among the battery modules. Even when the service plug is attached at the time of completion of maintenance without attachment of the terminal cover, the battery modules are still kept in an unconnected state by means of a second switch, and energization, which would otherwise arise with exposed terminals, is prevented.

An in-wheel assembly is provided, and the in-wheel assembly includes an in-wheel actuator and a wheel. The in-wheel actuator includes a driving motor; a decelerator which is disposed inside the driving motor and configured to reduce a rotational speed of the driving motor; and a hollow shaft which is disposed inside the driving motor and configured to transfer a rotational force of the driving motor to the decelerator, which is accommodated in a hollow of the hollow shaft, and circulates fluid inside of the driving motor with respect to a surface of the decelerator when driven to rotate by the driving motor. The wheel accommodates the in-wheel actuator and receives a rotational speed reduced by the decelerator to rotate.

A system for providing vehicle manipulation device information provides information about a manipulation device such as a switch or a button to a user in advance, before the user manipulates a device mounted on a vehicle, thus improving convenience in manipulation and driving stability. The system includes a proximity sensor installed in a manipulation portion having the manipulation device for manipulating the device mounted on the vehicle to sense an object that approaches the manipulation portion. The system also includes a controller that receives an approach sensing signal from the proximity sensor, and outputs a control signal for displaying manipulation device information of the manipulation portion, and a display unit for displaying the manipulation device information of the manipulation portion.

A system for activating and deactivating a remotely controlled vehicle starter includes a handheld mobile communication device having at least a speaker mounted therein and a wireless transmitter having at least a start switch mounted therein. A first wire connects a negative voltage supply path to the speaker circuit with a negative voltage supply path to the start switch circuit. A variable resistor is provided and has a pair of end terminals. There is a second wire having each of a first end thereof electrically connected to a positive voltage supply path to the speaker circuit and an opposed second end thereof electrically connected to one terminal end of the variable resistor. A third wire is also provided to connect an opposed end terminal of the variable resistor to a positive voltage supply path to the start switch.

A motor control circuit includes a power relay, a converter division, a smoothing condenser, a control circuit and a motor drive circuit, and is connected to a battery as high voltage power and to an electrical motor. The battery is connected with a driving battery having the high voltage such as 288V etc. A step down circuit reduces the high voltage to a low voltage such as 36V etc., charges a low voltage charge device and supplies drive power to the motor drive circuit. When the vehicle collision is occurred, the control circuit detects the collision by a value of detected acceleration, a power change relay is turned on to change to the power source from the low voltage charge device after voltage of the smoothing condenser is reduced, thereby connecting the low voltage to the motor drive circuit.

The invention discloses a battery emergency disconnection system based on accurate measurement. The battery emergency disconnection system comprises a high-voltage electric load, a processor unit anda battery, wherein the battery is electrically connected with a burning explosion type fuse and a copper bar; the burning explosion type fuse is electrically connected with a high-voltage electric load through the processor unit, the copper bar is electrically connected with a temperature sensor through the processor unit, meanwhile, the copper bar and the temperature sensor are electrically connected with a relay, and the relay is electrically connected with the high-voltage electric load. According to the battery emergency disconnection system, the loss of charging and discharging of the battery is reduced through an alternative scheme, the action time of the fuse is prolonged, the current coverage range of the fuse for battery protection is increased, and the thermal runaway risk of thebattery due to overcurrent is reduced.

An electric leakage detection device for an in-vehicle power supply system includes: a detection signal generation unit for applying an AC voltage to a voltage application point on a wire connecting a power conversion circuit and a power supply, said power conversion circuit converting the power from the power supply to AC power and supplying the AC power to an electric motor; a voltage measurement unit for measuring the voltage at a voltage measurement point between said detection signal generation unit and said voltage application point; and an electric leakage detection unit for detecting, when a control device for said electric motor is providing said electric motor with an instruction for holding a constant rotation angle, whether or not electric leakage is present between said power conversion circuit and said electric motor depending on the voltage at said voltage measurement point measured by said voltage measurement unit.

A charging device for an electric vehicle is disclosed. A mal-operation detection unit detects whether a start operation part is operated mistakenly by an electric vehicle user; when mal-operation is detected by the a charging control unit during processes where batteries in the electric vehicle are charged by an external power source arranged outside the electric vehicle, the batteries are kept being charged.

A control system for a vehicle having a first wheel arranged to be driven by a first electric motor and a second wheel arranged to be driven by a second electric motor, wherein the first wheel and thesecond wheel are transversely located on the vehicle relative to each other, the control system comprising a first controller associated with the first electric motor and a second controller associated with the second electric motor, wherein the first controller includes means for estimating a first power value for the power applied to the second wheel by the second electric motor when the secondelectric motor is placed in a first motor configuration and means for estimating a second power value for the power applied to the second wheel by the second electric motor when the second electric motor is placed in a second motor configuration, wherein upon the occurrence of a predetermined condition the first controller is arranged to determine a first power differential between the power being applied to the first wheel by the first electric motor and the first power value and a second power differential between the power being applied to the first wheel by the first electric motor and the second power value, wherein if the first controller determines that if either the first power differential or the second power differential is greater than a predetermined value the first controlleris arranged to adjust the torque generated by the first electric motor or if both the first power differential and the second power differential are less than a predetermined value the first controller is arranged to maintain the torque generated by the first electric motor.

The system has a three-phase inverter (1) connected to primary ends (2a-2c) of windings (3a-3c) of three phases of a permanent magnet three-phase motor (4). A three-phase isolation contactor (9') is placed on two of the windings between the inverter and the respective primary end. Secondary ends (5a-5c) of the windings are connected to a common point (6), and a neutral double contactor (11) is placed on the two windings between the point and the respective secondary end. The contactors (9', 11) are respectively placed between the ends (2a, 5a) and the ends (2c, 5c). An independent claim is also included for a method for deactivating a permanent magnet four-phase motor for a railway vehicle in case of an internal defect.