| Omron Automotive Electronics Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120125754 | SWITCH DEVICE - In the switch device including the case in which switches are accommodated, tube portions provided on an upper surface of the case, operation knobs swingably provided to the tube portions, operation rods for transmitting movement of the operation knobs to the switches, and the cover covering the upper surface of the case while exposing the operation knobs, projections protruding on the side of the cover are provided on the upper surface of the case, projections protruding on the side of the case are provided on a back surface of the cover, and the projections are arranged in a space between the cover and the case formed when the case is covered by the cover so as to be overlapped with each other when seen from the front and back direction. | 05-24-2012 |
| 20120109562 | ROTATIONAL ANGLE DETECTION DEVICE - A rotational angle detection device has a resolver in which an excitation coil, a first output coil and a second output coil are provided on a periphery of a rotor coupled to a rotation shaft, an excitation signal generator circuit that generates an excitation signal and sends the excitation signal to the excitation coil, and a rotational angle calculation unit that performs sampling for respective output signals of the first output coil and the second output coil in a predetermined cycle, and calculates a rotational angle of the rotation shaft based on two sampling signals obtained as a result of the sampling. The excitation signal generator circuit is of a single excitation mode and generates a single excitation signal. | 05-03-2012 |
| 20120092896 | SWITCHING POWER SUPPLY DEVICE - A system simplification can be achieved by reducing the number of sensors required to detect currents and voltages when an output current is estimated. a switching power supply device | 04-19-2012 |
| 20120091793 | VEHICLE WINDOW OPENING AND CLOSING CONTROL DEVICE - The driver seat unit and the other-seat unit are connected by the single signal line. A direction of a current passed through a motor is switched using contacts of a window opening switch and a window closing switch in the other-seat unit. When a window closing manipulation is performed by the driver seat unit, the current is passed through a coil of a relay via the contacts of the window closing switch, and a contact of the relay is switched to pass a forward current through the motor. When a window opening manipulation is performed by the driver seat unit, the current is passed through a coil of a relay via the contacts of the window opening switch, and a contact of the relay is switched to pass a reverse current through the motor. | 04-19-2012 |
| 20120062167 | DC-DC CONVERTER - A DC-DC converter includes a power conversion unit, a load amount detector, a charge detector that detects whether or not a battery is being charged, a switching frequency setting unit, and a switching controller. The load amount detector detects a load amount of the power conversion unit. The switching frequency setting unit sets a switching frequency of a switching element based on the load amount when the charge detector detects that the battery is not being charged, and sets the switching frequency of the switching element to a predetermined value when the charge detector detects that the battery is being charged. | 03-15-2012 |
| 20120056478 | POWER-SUPPLY CONTROL DEVICE - A power-supply control device for battery having a plurality of cells connected in series has a voltage conversion unit that steps down a voltage at the battery to supply the stepped-down voltage to a first load, a first opening and closing unit that opens and closes a supply path of first power from the battery to the voltage conversion unit and a second load, a battery control unit that detects abnormality of the battery, controls opening and closing of the first opening and closing unit, and is operated by second power supplied from the battery or third power supplied from the voltage conversion unit, the second power being lower than the first power, and a second opening and closing unit that opens and closes a supply path of the second power from the battery to the battery control unit. | 03-08-2012 |
| 20120032517 | DC-DC CONVERTER - A voltage drop of an output voltage of a DC-DC converter, caused by a wiring resistance, can properly be compensated at low cost. The DC-DC converter is connected to a low-voltage battery through an ignition switch and started up by the ignition switch. A transformation unit transforms a voltage inputted from a high-voltage battery and supplies the voltage to the low-voltage battery. A control circuit calculates a wiring resistance between the transformation unit and the low-voltage battery based on the voltage inputted from the low-voltage battery through the ignition switch in connecting the ignition switch and an output voltage and an output current of the transformation unit. The control circuit corrects a command value of the output voltage of the transformation unit based on the calculated wiring resistance to control the output voltage of the transformation unit. The invention can be applied to a DC-DC converter for electric-powered vehicle. | 02-09-2012 |
| 20110285335 | MOTOR DRIVE DEVICE - A motor drive device includes an inverter circuit, a driver circuit for outputting a PWM signal to the inverter circuit, a booster circuit for boosting a power supply voltage supplied from a power supply circuit, a fail safe circuit arranged between the inverter circuit and the motor, and a fail safe drive unit for outputting a signal for turning ON/OFF a semiconductor switching element of the fail safe circuit. A boost voltage output from the booster circuit is supplied to the driver circuit and also supplied to the fail safe drive unit. The fail safe drive unit drives the semiconductor switching element of the fail safe circuit by such boost voltage. | 11-24-2011 |
| 20110273122 | MOTOR DRIVE DEVICE - A motor drive device has an inverter circuit, in which at least three sets of a pair of upper and lower arms including a semiconductor switching element on an upper arm and a lower arm is arranged, for supplying voltage to a motor based on ON/OFF operation of each semiconductor switching element by a PWM (Pulse Width Modulation) signal, an inverter drive unit for outputting the PWM signal to each semiconductor switching element of the inverter circuit, a fail safe circuit, arranged between the inverter circuit and the motor, including a semiconductor switching element for shielding the voltage supply from the inverter circuit to the motor for each phase, and a fail safe drive unit for outputting a signal for turning ON/OFF the semiconductor switching element of the fail safe circuit. | 11-10-2011 |
| 20110260034 | PHOTO DETECTION DEVICE - A photo detection device, which is disposed in a vehicle, includes a first photo detection element that detects light and a first signal processing unit that performs a predetermined process based on a detection result of the first photo detection element. The photo detection device also includes a first board on which the first photo detection element is mounted and a second board on which the first signal processing unit is mounted. Additionally, the photo detection device includes a holding member that holds the first board and the second board and a housing that accommodates the holding member. The holding member holds the first board and the second board such that the second board is arranged in a second plane different from a first plane in which the first board is arranged. | 10-27-2011 |
| 20110248656 | MOTOR DRIVE DEVICE - A motor drive device has a drive circuit for driving a motor, and a control section for controlling the drive circuit. The control section has a current command value calculating portion for calculating a current command value, a rotation calculating portion for calculating a rotation angle and an angular speed of the motor, a current command value correcting portion for correcting the current command value based on the rotation angle, a voltage command value calculating portion for calculating a voltage command value based on the current command value, a voltage command value correcting portion for correcting the voltage command value based on the current command value and the rotation angle and the angular speed, and a drive signal generating portion for generating a drive signal based on the voltage command value. | 10-13-2011 |
| 20110234138 | MOTOR DRIVE DEVICE - A motor drive device has a drive unit having at least three pairs of upper and lower arms including switching elements at each of the upper arm and the lower arm, for driving a motor based on an ON/OFF operation of each of the switching elements by a PWM signal, a single current detection resistor for detecting a current flowing to the drive unit, and a control unit for detecting a current value of a current flowing to each phase of the motor based on the current flowing to the current detection resistor, and outputting the PWM signal to each of the switching elements based on a target current value of each phase and the detected current value of each phase. | 09-29-2011 |
| 20110221368 | MOTOR DRIVE DEVICE - A motor drive device capable of suppressing generation of torque ripple and abnormal noise includes an inverter, and a control section for controlling the inverter. The control section includes a current command value calculation unit for calculating a current command value, a rotation calculation unit for calculating a rotation angle and an angular speed of the motor, a drive signal generation unit for generating a PWM signal, a correction signal generation unit for generating a correction signal for correcting the PWM signal to compensate for the dead time of the inverter, and an application current setting unit for adding a dead time to the PWM signal corrected by the correction signal and outputting the resulting signal to the inverter. The correction signal generation unit generates the correction signal based on the current command value and the rotation angle and the angular speed calculated by the rotation calculation unit. | 09-15-2011 |
| 20110202197 | POWER SUPPLY SYSTEM AND POWER SUPPLY CONTROL METHOD - The power supply system, which may be used with an electric car, extends the life of a high voltage battery while minimizing electric power required for vehicle actions. A temperature sensor measures a temperature of the high voltage battery. A controller preferentially drives first loads given first priority among a plurality of loads driven by the high voltage battery, other than a drive motor, based on an electric power amount that the high voltage battery is able to output and an electric power amount required by the drive motor for driving a vehicle when the temperature of the high voltage battery is not higher than a predetermined temperature. The controller preferentially drives in-vehicle devices of the highest priority among in-vehicle devices based on the electric power amount that the high voltage battery is able to output and the required electric power amount of the drive motor for driving the vehicle. | 08-18-2011 |
| 20110128007 | PORTABLE DEVICE FOR DISPLAYING CHARGE INFORMATION AND CHARGE INFORMATION DISPLAY SYSTEM - A portable device for displaying charge information has a transmission unit for wirelessly transmitting a signal, requesting charge information on a battery, to a controller provided with a unit for detecting a remaining amount of a battery, a reception unit for wirelessly receiving the charge information from the controller, a storage unit for storing charge information received by the reception unit, a display unit for displaying charge information stored into the storage unit, and a charge prediction information calculating unit for calculating prediction information regarding a state-of-charge of the battery based upon charge information stored in the storage unit in the case of the reception unit being unable to receive charge information from the controller after transmitting a signal requesting charge information from the transmission unit. The prediction information calculated by the charge prediction information calculating unit is displayed in the display unit. | 06-02-2011 |
