Electric motored vehicle and method for controlling electrically charging the same
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United States of America Patent
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Aug 19, 2014
Grant Date -
May 2, 2013
app pub date -
Jul 22, 2010
filing date -
Jul 22, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A charger (200) electrically charges a main battery via (10) an electric power conversion path extending through an isolation transformer (260) and providing electrical isolation between an external power supply (400) and the main battery (10) when first and second relays (RL1, RL2) are turned off and a relay (RL3) is turned on. In contrast, the charger (200) electrically charges the main battery (10) via an electric power conversion path bypassing the isolation transformer (260) and providing electrical connection between the external power supply (400) and the main battery (10) when the first and second relays (RL1, RL2) are turned on and the third relay (RL3) is turned off. The charger (200) can thus selectively apply employing the isolation transformer (260) to ensure electrical isolation in externally electrically charging the battery, and bypassing the isolation transformer (260) to give priority to high efficiency in externally electrically charging the battery, as the relays (RL1-RL3) are turned on/off as controlled.
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