BATTERY SYSTEM
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Jul 1, 2024
filing date -
Jul 1, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
The DC power of the battery is converted into AC power by an inverter to drive a motor generator (MG). The control ECU executes the temperature raising control at the time of low temperature of the battery. During the temperature raising control, the control ECU sets the carrier frequency of the inverter to the resonance frequency of the battery circuit including the battery. The frequency of the switching ripple current coincides with the resonance frequency, and the amplitude of the current ripple increases, so that the battery can be efficiently raised in temperature (heated). The sound pressure level increases only in the region of the resonance frequency, and an increase in loudness can be reduced.
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