Electric automobile
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 10, 2015
Grant Date -
Dec 12, 2013
app pub date -
Feb 10, 2012
filing date -
Feb 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric vehicle includes an inverter unit and an ECU. The inverter unit or the ECU includes a magnetic force estimator that estimates a magnetic force of a permanent magnet structure associated with a motor rotor of a motor unit. The inverter unit or the ECU may also include a determiner for the estimated magnetic force and an abnormalities-responsive motor drive limiter. The estimator is configured to estimate, according to a predefined rule, the magnetic force, based on at least two detection signals selected from a group consisting of a detection signal indicating a rotational frequency of the motor unit, a detection signal indicating a motor voltage of the motor unit and a detection signal indicating a motor current of the motor unit.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B60K Class
- 1466 Applications Filed
- 1292 Patents Issued To-Date
- 88.14 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B60K Class
- 6.45 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 10, 2027 |
