Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Denso Corporation

Kabushiki Kaisha Toyota Jidoshokki

Nippon Soken, Inc.

Naoyoshi Takamatsu

Masaki Okamura

Shuji Tomura

Naoki Yanagizawa

Shigeaki Goto

Toshifumi Yamakawa

Hirotsugu Ohata

Yoshitaka Niimi

Masanori Ishigaki

Takuya Sakamoto

Takaji Umeno

Satoshi Hirose

Fumitaka Yoshinaga

Satoru Ito

Shunya Kobayashi

Kosuke Hirano

Kenji Yamada

Hideto Hanada

Hiromichi Kuno

Daigo Kikuta

Hiroya Tsuji

Daigo Nobe

Takahide Sugiyama

Yasuhiro Koike

Yoshihiko Hiroe

Hiroyuki Sakakibara

Hiroo Fuma

Takeshi Yamazaki

Kazuki Fukatsu

Takanori Degaki

Kaoru Domon

A control device for an electric vehicle, includes: a DC power supply; a three-phase AC motor; an inverter that converts DC power supplied from the DC power supply into AC power and outputs the AC power to the three-phase AC motor; and a control unit that controls the inverter to control an input voltage to the three-phase AC motor. Further, when a parameter correlated with the input voltage includes a predetermined high frequency component, the control unit performs correction of adding a component for canceling out the high frequency component to the input voltage, and controls the three-phase AC motor based on the corrected input voltage.

Control device for electric vehicle

A power supply device includes a storage battery, a capacitor unit connected to the storage battery, a power converter including three phases connected to the storage battery in parallel, a control device configured to control a switching on and off of switching elements included in the three phases respectively, a first connection terminal connected to a P terminal of a DC charger and located between first and second switching elements in any one of the three phases, and a second connection terminal connected to an N terminal of the DC charger and located between third and fourth switching elements in another one of the three phases.

Power supply device

A charging device includes: a power supply circuit including a first inverter connected between a first storage battery and a load, and a second inverter connected between a second storage battery and the load, the power supply circuit being configured to drive the one load; a charging port configured to be connected to an external power supply when the first storage battery and the second storage battery are charged with power from the external power supply; and a relay configured to allow current to bypass the first inverter, the second inverter, and the load between a positive electrode terminal of the charging port and a negative electrode terminal of the charging port, when the first storage battery and the second storage battery are charged with the power from the external power supply.

Charging device

A charging device includes: first and second capacitors connected in series between a positive electrode and a negative electrode of a storage battery; first and second switching elements each including a plurality of switching elements; first and second terminals; first and second changeover switches; and a control circuit controlling opening and closing of the first switching elements and the second switching elements to switch between a first state to charge the first capacitor with an external direct-current power source and a second state to charge the second capacitor with the external direct-current power source.

A power supply device includes a storage battery; a capacitor unit having first and second capacitor; a three phase power converter, connected in parallel with the storage battery, each phase having first to fourth switching elements in series; three connection terminals electrically connectable to a three-phase AC charger; and a control unit, in a case where the three connection terminals and the three-phase AC charger are electrically connected between the first switching elements and the second switching elements for the respective three phases in the three-level inverter, before the storage battery is charged by means of the three-phase AC charger, charging the first capacitor with use of the storage battery and setting voltage of the second capacitor to 0 V.

A battery heating device includes: a capacitor connected in parallel between a battery and a load; a reactor connected to the capacitor; a first switch connected to a terminal on the load side of the reactor, and to one terminal of the capacitor; a second switch connected to a terminal on the load side of the reactor, and to another terminal of the capacitor; a controller configured to control an ON/OFF state of the first switch and the second switch; and a current sensor configured to detect a direction and a current value of a reactor current flowing in the reactor. The controller performs battery heating mode control including a first control of turning OFF the first switch and turning ON the second switch when a current value becomes substantially zero from a state where the reactor current flows from the load side to the battery side.

Battery heating device

A charging apparatus includes: an electric power source circuit including a first inverter and a second inverter to drive one motor; and a charging port having a positive electrode terminal connected to a positive electrode side of a first storage battery, and a negative electrode terminal connected to a negative electrode side of a second storage battery. In the case where the battery charger outputs first electric power, the first storage battery and the second storage battery are connected in parallel when being charged with the first electric power. In the case where the battery charger outputs second electric power that is larger than the first electric power, the first storage battery and the second storage battery are connected in series when being charged with the second electric power.

Charging apparatus

A vehicle control device includes: first and second power supplies, and a control unit controlling to, when a remaining capacity difference between the first power supply and the second power supply is large, to reduce a first operating range, in which the connection state with the electrical load is controlled to be series connection state of the power supplies, and increase a second operating range, in which the connection state with the electrical load is controlled to be the parallel connection state of the power supplies or the single connection state of one of the power supplies having a larger remaining capacity, as compared with a case where the remaining capacity difference is small.

Vehicle control device

A power supply of a vehicle includes a first switching element, a second switching element, a third switching element, a first battery, a reactor element, a second battery, a smoothing capacitor, and a controller. When the connection state of the first battery and the second battery is switched from the series connection state to the parallel connection state, the controller is configured to perform a transition control so that a voltage of the smoothing capacitor is decreased to the higher of a voltage of the first battery and a voltage of the second battery, and perform a switching control to turn on the first switching element after a diode of the first switching element is energized.

Power supply for vehicle and control method of power supply

A power supply device of a vehicle includes a negative electrode terminal connected to a first battery; a positive electrode terminal connected to a second battery; a first positive electrode side relay between a first node and the first battery; a first capacitor connected between the first node and a negative line; a first negative electrode side relay between the first battery and the negative line; a first precharge relay and a first resistive element connected in parallel with the first negative electrode side relay; a second positive electrode side relay between a third node and the second battery; a second capacitor between the third node and a second node; a second negative electrode side relay between the second battery and the second node; and a second precharge relay and a second resistive element connected in parallel with the second positive electrode side relay.

Power supply device of vehicle

A power-supply apparatus includes: an energy storage unit including energy storage modules; switches conducting or shutting off a current and switching a connection state of the storage modules; a voltage control unit switching a voltage of the energy storage unit; drive units, connected to the energy storage unit in series, driving respective external rotating electrical machines; and a capacitor connected to the drive units. Further, the power-supply apparatus includes a control unit that, when the voltage control unit switches the voltages of the energy storage unit, supplies electric power regenerated in the drive units to the capacitor and discharges the capacitor, and after an absolute value of a voltage difference between a post-switching voltage of the energy storage unit and a voltage of the capacitor is less than a predetermined value, controls so that the post-switching voltage of the energy storage unit is applied to the capacitor.

Power-supply apparatus

A relative maximum point and a relative minimum point, are provided in a first reactor current and a second reactor current within one control cycle as a result of control of on and off of switching elements. At least one of the inflection points in the first and second reactor currents, a plurality of switching elements to simultaneously be turned on or and off are controlled to be turned on or off in a prescribed order with a time lag being set. At the inflection point with the time lag being set, a switching loss is produced in a switching element turned on later or a switching element turned on earlier in accordance with the prescribed order.

Power supply system for controlling DC voltage between power lines

An electric motor control apparatus controls an electric motor system that includes a power converter including switching elements and a three-phase alternating-current motor. The electric motor control apparatus includes generating devices for generating modulation signals by respectively adding corresponding triple harmonic signals to phase voltage command signals and a control device for controlling switching elements on the basis of a magnitude relation between each of the modulation signals and a carrier signal. Each of the triple harmonic signals includes a signal component that increases the absolute value of a peak value of a signal level of the corresponding modulation signal above the absolute value of a peak value of a signal level of the carrier signal in a corresponding one of phases.

Electric motor control apparatus and electric motor control method

A control apparatus for the boost converter to reduce the total loss is proposed. The control apparatus for the boost converter which controls the boost converter in a power system, the system has a DC power source having source voltage; the boost converter including a switching device and boosting the source voltage by predetermined boost control including change of switching state of the switching device based on boost instruction voltage and outputs the boosted voltage to a load apparatus; and a voltage detecting device detecting output voltage of the boost converter, the control apparatus has: a boost controlling device performing the boost control; and an intermittent controlling device performing intermittent process of the boost control based on the detected output voltage to keep the output voltage within range including the boost instruction voltage which is used when the last boost control is performed.

Control apparatus for boost converter

Provided is a motor controller that controls a motor system including: a power converter, a smoothing capacitor, a three-phase AC motor, and a current sensor. The motor controller is provided with an electronic control unit. The electronic control unit specifies a target phase that is a phase of a second phase voltage command signal having a largest difference from a first phase voltage command signal having a signal level that is neither a maximum nor a minimum signal level, based on three phase voltage command signals generated from the detection value of the current sensor, and corrects the detection value of the current sensor, which detects the phase current of the target phase, such that a terminal voltage of the smoothing capacitor matches the desired voltage value.

Growing community of inventors

Shizuoka-ken, Japan

Naoyoshi Takamatsu