Electromotive vehicle

Patent metadata

Field	Value
Publication number	US-2016368488-A1
Application number	US-201615180755-A
Country	US
Kind code	A1
Filing date	Jun 13, 2016
Priority date	Jun 16, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

An electromotive vehicle includes: an electrical storage device; a rotary electric machine; a transmission device; an engine; and an electronic control unit. The electronic control unit is configured to, when decelerating force acts on the vehicle due to engine brake force of the engine and upshift control is executed in the transmission device and when an upper limit value of input electric power that is allowed at the time of charging the electrical storage device is smaller than a threshold, control the rotary electric machine such that torque of the rotary electric machine gradually increases by the time the upshift control completes, at which the decelerating force that acts on the vehicle becomes decelerating force reduced as a result of the upshift control.

First claim

What is claimed is:

1 . An electromotive vehicle comprising:
an electrical storage device; a rotary electric machine serving as a drive source of a vehicle and a generating source for generating electric power, the rotary electric machine being configured to exchange electric power with the electrical storage device; a transmission device including an input shaft and an output shaft, a rotary shaft of the rotary electric machine being connected to the input shaft, a drive wheel being connected to the output shaft, the transmission device being configured to be able to change a rotation speed of the input shaft and then transmit the changed rotation speed to the output shaft; an engine serving as a drive source of the vehicle, the engine being connected to the input shaft of the transmission device; and an electronic control unit configured to control an operation of the rotary electric machine and an operation of the transmission device, wherein the electronic control unit is configured to, when decelerating force acts on the vehicle due to engine brake force of the engine and upshift control is executed in the transmission device and when an upper limit value of input electric power that is allowed at the time of charging the electrical storage device is smaller than a threshold, control the rotary electric machine such that torque of the rotary electric machine gradually increases by the time the upshift control completes, at which the decelerating force that acts on the vehicle becomes decelerating force reduced as a result of the upshift control.

2 . The electromotive vehicle according to claim 1 , wherein
the electronic control unit is configured to, when the rotation speed of the rotary electric machine reaches a rotation speed threshold lower than a rotation limit value, execute the upshift control.

3 . The electromotive vehicle according to claim 1 , wherein
the electronic control unit is configured to, when the upper limit value is larger than the threshold in a case where the upshift control is executed, allow generation of negative torque that is output from the rotary electric machine.

4 . The electromotive vehicle according to claim 1 , wherein
the electronic control unit is configured to control the rotary electric machine such that torque output of the rotary electric machine stops at the same time as the upshift control completes.

Assignees

• Toyota Motor Co Ltd

Inventors

• Sato Shun
• Tsutsumi Takahiko
• Sugimura Toshio

Classifications

• B60Y2300/74

  Reducing shift shocks · CPC title

• B60W10/08

  including control of electric propulsion units, e.g. motors or generators · CPC title

• Y10S903/93

  Conjoint control of different elements · CPC title

• Y10S903/919

  Stepped shift · CPC title

• B60W30/025 Primary

  related to comfort of drivers or passengers · CPC title