Title:
ELECTRIC VEHICLE
Document Type and Number:
Japanese Patent JP2015220802
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technique related to an electric vehicle incorporated with an auxiliary motor enabling a two-wheel drive vehicle to be a temporary four-wheel drive, the technique for suppressing a temperature rise in an inverter for the auxiliary motor without limiting the torque of the auxiliary motor necessary to eliminate a generated slip as much as possible.SOLUTION: An electric vehicle allows selection of two-wheel drive and four-wheel drive, and includes an inverter for supplying power to a main motor for driving a front wheel and to a sub-motor for driving a rear wheel. A controller of the electric vehicle performs: determining a first requirement output to be output from a sub-motor while no slip has occurred and a second requirement output to be output from the sub-motor when occurrence of a slip is detected, and supplying the determined outputs to the inverter; and decreasing an upper limit value of the first requirement output in the case of a temperature of the inverter being higher than a first threshold temperature T1 and decreasing an upper limit value of the second requirement output in the case of a temperature of the inverter being higher than a second threshold temperature T2 (where T2>T1).
Inventors:
UKI SHINICHIRO
Application Number:
JP2014101166A
Publication Date:
December 07, 2015
Filing Date:
May 15, 2014
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60L3/00; B60K6/445; B60K6/52; B60L15/22; B60W10/08; B60W20/00
Domestic Patent References:
| JP2005312187A | 2005-11-04 | |||
| JP2007189764A | 2007-07-26 | |||
| JP2007276641A | 2007-10-25 | |||
| JP2005170086A | 2005-06-30 | |||
| JP2003199207A | 2003-07-11 |
Attorney, Agent or Firm:
Kaiyu International Patent Office