Patent application number | Description | Published |
20100094497 | ELECTRICAL POWERED VEHICLE INCORPORATING MOTOR AND INVERTER, AND CONTROL METHOD THEREFOR - In an electrical powered vehicle including a control device for generating an input/output power command value for a power storage device and a control device for controlling a power conversion device and a rotating electric machine, provided separately, when there is a sudden change in the rotational speed of a rotating electric machine, the input/output power command value of a power storage device intrinsically set by an HV-ECU is corrected corresponding to the change in the rotational speed of the rotating electric machine by a control device MG-ECU detecting the rotational speed of the rotating electric machine, without having to wait for modification of the input/output power command value from the HV-ECU. Accordingly, there can be prevented excessive charging and excessive discharging of a power storage device induced by delay in modifying the input/output power command value caused by transmission delay between control devices when the rotational speed of the rotating electric machine suddenly changes. | 04-15-2010 |
20110040436 | POWER SUPPLY SYSTEM FOR ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - A power supply system includes a main power storage device and a plurality of sub power storage devices. A converter is connected to selected one of the sub power storage devices to convert voltage between the selected sub power storage device and an electric power feeding line bidirectionally. When a request for switching the selected sub power storage device in use is generated, a converter steps up voltage on the electric power feeding line to a predetermined voltage, and thereafter a process for switching relays is performed. The predetermined voltage is higher than any of a voltage output from the main power storage device and a voltage output from a sub power storage device to be newly connected to the converter. Further, during the process for switching connection of the relays, upper limits on electric power input/output to/from the selected sub power storage device are set to 0. | 02-17-2011 |
20110178664 | HYBRID VEHICLE AND METHOD FOR CONTROLLING THE SAME - A power supply system includes a main power storage device and a plurality of sub power storage devices. A converter is connected to a selected one of the sub power storage devices to convert voltage between the selected sub power storage device and an electric power feeding line bidirectionally. In response to decrease in SOC of the selected sub power storage device being used, a request to switch the sub power storage device is generated and accordingly a switching process for a relay is performed. Here, while a process for starting or stopping an engine is being performed, the request to switch will not be generated even when decrease in SOC is detected. Likewise, while a process for switching the sub power storage device is being performed, the process for starting or stopping the engine will not be started even when a request to start or stop the engine is generated. | 07-21-2011 |
20110208383 | ELECTRIC POWERED VEHICLE AND CONTROL METHOD FOR THE SAME - A power supply system includes a main power storage device and a plurality of sub power storage devices. A converter is connected to a selected one of the sub power storage devices to perform voltage conversion bidirectionally between the selected sub power storage device and an electric power feeding line. A control device executes charging control for controlling input of electric power from a load device to the main power storage device and selected sub power storage device, and switching control for switching electrical connection between the plurality of sub power storage devices and electric power feeding line, according to a braking request of the electric powered vehicle. The control device prohibits or limits, until completion of one of the charging control and switching control, the other control. | 08-25-2011 |
20120010771 | HYBRID VEHICLE AND METHOD FOR CONTROLLING THE SAME - A power supply system includes a main power storage device and a plurality of sub power storage devices. A converter is connected to a selected one of the sub power storage devices to convert voltage between the selected sub power storage device and an electric power feeding line bidirectionally. The sub power storage device undergoes a connection switching process, and when the last sub power storage device is currently used, then, in accordance with that sub power storage device's SOC and the vehicle's state, a request is generated to disconnect the sub power storage device and a relay is turned off. In doing so, if a process is currently performed for starting or stopping an engine, generating the request is refrained even if a decreased SOC is sensed. Similarly, if a process is performed to disconnect a sub power storage device, and therewhile a request is generated to start/stop the engine, starting the process performed for starting or stopping the engine is refrained. | 01-12-2012 |
20120022738 | ELECTRIC POWERED VEHICLE AND CONTROL METHOD FOR THE SAME - An electric powered vehicle includes a motor, an inverter, a main power storage device, and a plurality of sub power storage devices. A converter is connected to a selected one of the plurality of sub power storage devices to perform voltage conversion bidirectionally between the selected sub power storage device and an electric power feeding line. A control device executes a disconnection process to disconnect a selected sub power storage device from the converter based on a state of charge of the selected sub power storage device when there is no new sub power storage device that can replace the selected sub power storage device. Further, the control device executes a braking process for the inverter for regenerative braking by the motor. The control device prohibits, during execution of one process of a disconnection process and braking process, the other process. | 01-26-2012 |
20120089290 | POWER SUPPLY SYSTEM FOR ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - A power supply system includes a main power storage device and a plurality of sub power storage devices. A converter is connected to a selected one of the sub power storage devices to convert voltage between the selected sub power storage device and an electric power feeding line bidirectionally. Connection of the sub power storage device is switched and, when the last sub power storage is used, a request to disconnect the sub power storage device is generated based on the SOC of the sub power storage device and the vehicle state. Specifically, where the SOC is included in a disconnection forced region in which the SOC is smaller than a reference lower limit, the sub power storage device is forced to be disconnected regardless of the vehicle state. Where the SOC is included in a disconnection permitted region in which the SOC is higher than that in the disconnection forced region, the disconnection request is generated on condition that the vehicle is in such a state that will not affect vehicle's drivability. | 04-12-2012 |
20120109442 | POWER SUPPLY SYSTEM FOR ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - A power supply system for a hybrid vehicle includes a main power storage device and a plurality of sub power storage devices used selectively. When SOC of each power storage device decreases to an SOC control target, the running mode transitions from a CD mode of running with stored electric energy with an engine stopped to a CS mode of running while maintaining stored electric energy by power generation of the engine. An ECU determines a usage pattern of the power storage devices in the CS mode and the CD mode at startup of the power supply system following the start of vehicle driving. Further, in accordance with the determined usage pattern, the ECU appropriately sets an individual SOC target for each power storage device such that, upon ensuring stored electric energy available at the start of the CS mode, stored electric energy to be used in the CD mode is maximized. | 05-03-2012 |