Invention Grant
- Patent Title: Electric automobile
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Application No.: US14587240Application Date: 2014-12-31
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Publication No.: US09751409B2Publication Date: 2017-09-05
- Inventor: Takayoshi Ozaki
- Applicant: NTN CORPORATION
- Applicant Address: JP Osaka
- Assignee: NTN CORPORATION
- Current Assignee: NTN CORPORATION
- Current Assignee Address: JP Osaka
- Priority: JP2011-039854 20110225; JP2011-039855 20110225
- Main IPC: B60L15/02
- IPC: B60L15/02 ; B60L3/06 ; B60L3/12 ; B60L1/00 ; B60L3/00 ; B60L11/18 ; B60L15/20 ; H02P6/28 ; H02P29/032 ; H02P29/64

Abstract:
An electric vehicle includes a motor unit configured to drive a wheel, the motor unit including motor coils; a control system including an inverter; a temperature sensor configured to sense temperature of the motor coils or the inverter; and a limiter configured to, if the temperature sensed by the temperature sensor is equal to or greater than a motor coils temperature threshold, reduce a motor current of the motor unit until a derivative dTmc/dt of the sensed temperature with time drops to zero or below, or to, if the temperature sensed by the temperature sensor is equal to or greater than an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature with time drops to zero or below. The limiter is further configured to stop reducing a motor current of the motor or limiting the current command to the inverter.
Public/Granted literature
- US20150120123A1 ELECTRIC AUTOMOBILE Public/Granted day:2015-04-30
Information query
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