Elevator apparatus including rechargeable power supply and temperature sensitive charging control
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United States of America Patent
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Sep 24, 2002
Grant Date -
Aug 30, 2001
app pub date -
Jan 31, 2001
filing date -
Feb 28, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An elevator control apparatus includes a converter; an inverter; a controller for controlling a motor based on the AC power having a variable voltage and a variable frequency supplied from the inverter and operating an elevator; a power storage unit for storing the DC power; a thermistor for detecting temperature of the power storage unit; a charge/discharge control circuit for controlling a charging and discharging of the power storage unit based on the detected temperature and issuing a drive signal; and a charge/discharge circuit for charging and discharging the power storage unit based on the drive signal. The elevator control apparatus estimates a charging and discharging capability of the power storage unit and protecting the power storage unit, restraining sudden deterioration of the power storage unit.
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