CONTROL METHOD OF HYBRID VEHICLE
First Claim
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1. A hybrid vehicle, comprising:
- a motor unit connected to an engine via a rotation element;
a high voltage battery electrically connected to the motor unit to operate the motor unit;
a low voltage battery electrically connected to the high voltage battery through a two-way converter; and
a control portion configured to boost voltage of the low voltage battery to charge the high voltage battery with high voltage through the two-way converter when a state of charge of the high voltage battery is less than a first predetermined value.
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Abstract
Disclosed is a system for controlling a hybrid vehicle when the state of charge of a high voltage battery is sufficiently low. In particular, a motor unit is connected to an engine via a rotation element, a high voltage battery is electrically connected to the motor unit to provide power thereto, and a low voltage battery is electrically connected to the high voltage battery through a two-way converter. Advantageously, a control portion is configured to boost voltage of the low voltage battery to supply the high voltage battery with high voltage through the two-way converter when the state of charge of the high voltage battery falls below a first predetermined value.
45 Citations
16 Claims
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1. A hybrid vehicle, comprising:
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a motor unit connected to an engine via a rotation element; a high voltage battery electrically connected to the motor unit to operate the motor unit; a low voltage battery electrically connected to the high voltage battery through a two-way converter; and a control portion configured to boost voltage of the low voltage battery to charge the high voltage battery with high voltage through the two-way converter when a state of charge of the high voltage battery is less than a first predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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determining, by a control portion, whether the state of charge of a high voltage battery in a hybrid vehicle is less than a predetermined value; in response to the state of charge of the high voltage battery falling below a predetermined value, boosting, by the control portion, voltage of a low voltage battery to charge the high voltage battery with high voltage through the two-way converter; and starting an engine through via a motor unit powered by the high voltage battery as a result the high voltage battery receiving an electrical charge from the low voltage battery. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification