Toyota Jidosha Kabushiki Kaisha

Atsushi Nomura

Tomoko Oba

Shohei Oi

Daigo Nobe

Seiji Omura

A power supply device comprises a first boost converter configured to transmit electric power with conversion of a voltage between an electric load side and a power storage device side; a second boost converter connected in parallel to the first boost converter relative to an electric load and configured to transmit electric power with conversion of a voltage between the electric load side and the power storage side; and a control device configured to control the first boost converter and the second boost converter. At a predetermined time, the control device performs a loop current control that controls the first boost converter and the second boost converter such that a loop current flows in a closed circuit including the first boost converter and the second boost converter.

Power supply device

A vehicle includes: at least one rotary electric machine; an inverter that drives the rotary electric machine; a capacitor connected between a paired electric power lines that is connected to the inverter; and a control unit. When a vehicle collision is detected, the control unit executes first control for discharging electric charges stored in the capacitor by performing a switching operation of the inverter so as to prevent a flow of a q-axis current but cause a flow of a d-axis current to the rotary electric machine. The control unit stops the first control in a specified case and executes second control for performing the switching operation of the inverter so as to reduce the current flowing through the rotary electric machine to be lower than that during execution of the first control. The control unit executes third control for shutting down the inverter after execution of the second control.

Vehicle

A hybrid vehicle includes an engine, a first rotating electrical machine (first MG), a second rotating electrical machine (second MG), a planetary gear mechanism which mechanically couples these devices, a first inverter which drives the first MG, a second inverter which drives the second MG, and a controller. When the controller receives a fail signal from the first inverter, the controller performs shut-down control which brings the first inverter into a gate shut-down state with fuel supply to the engine being stopped. When the absolute value of an engine rotation speed Ne is more than or equal to a predetermined value &#x3b1; and the absolute value of a rotation speed Nm1 of the first MG is less than a threshold value &#x3b2; after the shut-down control is started, the controller determines that the first inverter has a short-circuit fault.

Hybrid vehicle

An ECU (Electronic Control Unit) controls a converter such that the converter is stopped when a fail signal FCV is output. The ECU further controls an inverter such that power operation and regenerative operation by a motor generator are performed in a state in which output of an ON signal to an IGBT (Insulated Gate Bipolar Transistor) element is set non-executable, when the fail signal FCV is output due to the IGBT element becoming short-circuited.

Motor drive apparatus, method of controlling motor drive apparatus, and electrically powered vehicle

A hybrid vehicle includes an electronic control unit that executes first discharge control in a state where an engine is stopped in the case where a collision detector detects a collision of the hybrid vehicle. The first discharge control includes bringing all switching elements on either one of an upper arm side and a lower arm side of either one of a first inverter and a second inverter into ON states; bringing another inverter into a gate blocking state; and discharging electric charges of a capacitor by using a discharge device until a voltage of the capacitor becomes lower than a threshold.

Hybrid vehicle and control method of hybrid vehicle

An internal combustion engine includes: a cylinder block having a block cooling water passage that supplies cooling water to a plurality of cylinder bores, and an inter-bore cooling water passage provided between cylinder bores that supplies cooling water between the cylinder bores; a cylinder head having a first cooling water passage to which cooling water is supplied from the block cooling water passage, and a second cooling water passage, which is provided independently from the first cooling water passage, and to which cooling water is supplied from the inter-bore cooling water passage; a heat exchanger; a first cooling water introducing part that leads cooling water, which is flown out from the first cooling water passage, to the heat exchanger; and a second cooling water introducing part that leads cooling water, which is flown out from the second cooling water passage, to a downstream side of the heat exchanger.

Internal combustion engine

An open deck type cylinder block () that is one embodiment of the present invention is configured as follows. A shallow portion () and a deep portion () are provided in a water jacket (). The shallow portion () is provided in a portion that is comparatively far from a head bolt hole (), while on the other hand the deep portion () is provided in a portion that is comparatively close to the head bolt hole (). A hollow portion () in which a block outer wall is hollowed toward a cylinder center side is provided between a bottom wall portion of the shallow portion () and a skirt portion () used as a crank case.

Growing community of inventors

Toyota, Japan

Atsushi Nomura