Toyota Jidosha Kabushiki Kaisha

Kazuhiko Sakakibara

Koji Ito

Hiroshi Sato

Michihiro Miyashita

Masanori Shinohara

Hiroyuki Toyama

Takeaki Suzuki

Ken Koibuchi

Tomoharu Maeda

Hiroaki Tabuchi

Nobuyuki Okabe

Ken Yoshida

Yuko Asano

Masato Chiba

A battery type identifying device is capable of identifying the type of a vehicle-mounted lead storage battery. The battery type identifying device includes: a charge processing unit which, on the condition that the state of a lead storage battery has reached a prescribed state as a result of a reduction in the amount of electricity stored therein from a fully charged state, carries out a determination charging process of charging the lead storage battery for a prescribed time; an accepted amount acquiring unit which acquires an amount accepted by the lead storage battery in the period during which the determination charging process is being carried out; and a determining unit which determines whether the lead storage battery is a liquid-type lead storage battery on the basis of the accepted amount acquired by the accepted amount acquiring unit.

Battery type identifying device, and method for identifying battery type

In performing double drive startup for starting up an engine while cranking the engine by both a first motor and a second motor, the cranking of the engine by one of the first motor and the second motor is finished earlier than the cranking of the engine by the other of the first motor and the second motor.

Engine apparatus

A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a battery sensor that measures an inter-terminal voltage of the lead storage battery. A control device that is applied to the drive system temporarily stops the engine when a temporary stop condition is satisfied, and starts up the engine again when a discharge amount of the lead storage battery in a period of the temporary stop is larger than a discharge upper limit amount. When an inrush voltage is equal to or lower than a restraint threshold, the discharge upper limit amount is set so as to be smaller than when the inrush voltage is higher than the restraint threshold.

Control device for drive system

A drive system includes an engine as a drive source, a lead storage battery that is charged using the engine as a motive power source, a starter that starts up the engine by being driven by electric power from the lead storage battery, and a voltage sensor that measures an inter-vehicle voltage of the lead storage battery. A control device that is applied to the drive system determines that the battery has been degraded, when a voltage difference between a first battery start-up voltage and a second battery start-up voltage is larger than a preset degradation determination threshold, the first battery start-up voltage being measured by the voltage sensor when the starter is driven, the second battery start-up voltage being measured by the voltage sensor when the starter is driven at a different timing from a timing when the first battery start-up voltage is measured.

A power supply unit includes an electronic control unit that executes; a first control for controlling first and second converters such that a voltage of the load power line becomes a predetermined voltage by driving the first converter in a state where the second converter is stopped, and a second control for controlling the first and second converters such that the voltage of the load power line becomes the predetermined voltage by driving the second converter in a state where the first converter is stopped. The electronic control unit is configured to, when shifting from first to second control, control the first and second converters such that the voltage of the load power line becomes the predetermined voltage by driving the second converter, and stop the first converter after an output current of the first converter has become less than a predetermined current.

Power supply unit

A vehicle charge control device includes a charge unit and a correction unit. The charge unit is configured to perform a charge operation for suppressing a deterioration in a battery by charging the battery until a charge end phase in which an acceptance current of the battery is smaller than a predetermined current value, the battery being mounted on a vehicle. The correction unit is configured to correct a charge rate of the battery based on a behavior of the acceptance current. In addition, the correction unit is configured to correct the charge rate based on the behavior in the charge end phase, in synchronization with the charge operation.

Vehicle charge control device to correct a state of charge

A control apparatus for a vehicle having an idle stop function includes a measurement unit that measures the characteristic of a battery provided in the vehicle, an identification unit that identifies the type of the battery based on the measured characteristic, and a control unit that stops the idle stop function in a case where the identified type of the battery indicates that the battery is not for an idle-stop vehicle, and permits execution of the idle stop function in a case where the execution of the idle stop function is permitted by an input of a predetermined signal from an external terminal even when the identified type of the battery indicates that the battery is not for the idle-stop vehicle.

Growing community of inventors

Toyota, Japan

Kazuhiko Sakakibara