AUTOMOBILE
First Claim
1. An automobile, comprising:
- a motor configured to drive the automobile;
a high-voltage battery connected to the motor via a high-voltage-system electric power line;
a charger connected to the high-voltage-system electric power line, the charger being capable of charging the high-voltage battery with electric power from an external electric-power source;
a low-voltage device connected to a low-voltage-system electric power line;
a first DC/DC converter connected to the high-voltage-system electric power line and the low-voltage-system electric power line, the first DC/DC converter being capable of supplying electric power of the high-voltage-system electric power line to the low-voltage-system electric power line with step down of voltage;
a second DC/DC converter connected to the high-voltage-system electric power line on a side closer to the charger than the first DC/DC converter and to the low-voltage-system electric power line, the second DC/DC converter having a rated output that is lower than a rated output of the first DC/DC converter and being capable of supplying electric power of the high-voltage-system electric power line to the low-voltage-system electric power line with step down of voltage; and
an electronic control unit that is configured to, in a case where ignition-on operation is made in first electric power supply processing during the external charging, the first electric power supply processing being processing in which only the second DC/DC converter is selected to run from between the first DC/DC converter and the second DC/DC converter to supply electric power to the low-voltage-system electric power line, a post-operation electric energy being an electric energy consumption of the low-voltage device after the ignition-on operation,i) continue the first electric power supply processing when the post-operation electric energy is not larger than a predetermined electric energy, andii) make a switch to second electric power supply processing in which only the first DC/DC converter is selected to run from between the first DC/DC converter and the second DC/DC converter to supply electric power to the low-voltage-system electric power line when the post-operation electric energy exceeds the predetermined electric energy.
1 Assignment
0 Petitions
Accused Products
Abstract
When ignition-on operation is made in first electric power supply processing during external charging, and a post-operation electric energy is not larger than a predetermined electric energy that is an electric energy consumption of a low-voltage device after the ignition-on operation, an automobile continues the first electric power supply processing. In the first electric power supply processing, from between a first DC/DC converter and a second DC/DC converter, only the second DC/DC converter is selected to run to supply electric power to a low-voltage-system electric power line. When the post-operation electric energy exceeds the predetermined electric energy, the automobile makes a switch to second electric power supply processing in which only the first DC/DC converter is selected to run from between the first DC/DC converter and the second DC/DC converter to supply electric power to the low-voltage-system electric power line.
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Citations
8 Claims
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1. An automobile, comprising:
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a motor configured to drive the automobile; a high-voltage battery connected to the motor via a high-voltage-system electric power line; a charger connected to the high-voltage-system electric power line, the charger being capable of charging the high-voltage battery with electric power from an external electric-power source; a low-voltage device connected to a low-voltage-system electric power line; a first DC/DC converter connected to the high-voltage-system electric power line and the low-voltage-system electric power line, the first DC/DC converter being capable of supplying electric power of the high-voltage-system electric power line to the low-voltage-system electric power line with step down of voltage; a second DC/DC converter connected to the high-voltage-system electric power line on a side closer to the charger than the first DC/DC converter and to the low-voltage-system electric power line, the second DC/DC converter having a rated output that is lower than a rated output of the first DC/DC converter and being capable of supplying electric power of the high-voltage-system electric power line to the low-voltage-system electric power line with step down of voltage; and an electronic control unit that is configured to, in a case where ignition-on operation is made in first electric power supply processing during the external charging, the first electric power supply processing being processing in which only the second DC/DC converter is selected to run from between the first DC/DC converter and the second DC/DC converter to supply electric power to the low-voltage-system electric power line, a post-operation electric energy being an electric energy consumption of the low-voltage device after the ignition-on operation, i) continue the first electric power supply processing when the post-operation electric energy is not larger than a predetermined electric energy, and ii) make a switch to second electric power supply processing in which only the first DC/DC converter is selected to run from between the first DC/DC converter and the second DC/DC converter to supply electric power to the low-voltage-system electric power line when the post-operation electric energy exceeds the predetermined electric energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification