Title:
DRIVE CONTROL DEVICE FOR HYBRID VEHICLE AND DRIVE CONTROL METHOD FOR HYBRID VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/241470
Kind Code:
A1
Abstract:
In a case where the temperature of an electric motor (1) is such that it is estimated that a temperature increase in a first section (p-f1) reaches a predetermined value, the first section being a path in which the electric motor is predicted to generate heat, and that a temperature increase in a second section (f1-f2) does not reach a predetermined value, the second section being a path in which the electric motor generates less heat than in the first section, on the basis of the power consumption of the electric motor in the first section and the second section, the first section is made a hybrid traveling section in which the electric motor and an engine (2) are used, with a torque limitation on the electric motor, and the second section is made a traveling section in which only the electric motor is used. As a result, the electric motor is inhibited from overheating in the first section such as a hill-climbing section, and stable traveling with the electric motor is performed in the second section in which the effect of fuel efficiency improvement is high, whereby the fuel efficiency is improved. In particular, in a case where a difference (ΔEm) between a power consumption rate (Em1) in the first section and a power consumption rate (Em2) in the second section is greater than a threshold (EmT) calculated from section distances (d1, d2) of the first section and the second section, a temperature threshold (Tlim1) for the torque limitation on the electric motor is set low so as to prevent the electric motor from overheating.
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Inventors:
TAKUMA HIROAKI (JP)
Application Number:
PCT/JP2020/020234
Publication Date:
December 03, 2020
Filing Date:
May 22, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60W10/08; B60L15/20; B60L50/16; B60W10/06; B60W20/12; B60W20/15; B60W20/50
Domestic Patent References:
| WO2013132593A1 | 2013-09-12 |
Foreign References:
| JP2016220271A | 2016-12-22 | |||
| JP2010115053A | 2010-05-20 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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