Electric system of electric vehicle
First Claim
1. An electric system of an electric vehicle comprising:
- a main secondary battery;
a power converter converting DC power of the main secondary battery into AC power, the power converter having a regenerative function enabling AC to DC conversion;
an AC motor driving wheels of the electric vehicle, the AC motor including windings whose first terminals are connected to the AC side output of the power converter;
a switch including a plurality of switching circuits, first terminals of the switching circuits being each connected to second terminals of the windings, second terminals of the switching circuits being shortcircuited; and
a charging connector to be connected to an external AC power source while charging the main secondary battery, the charging connector being connected to the first terminals of the switching circuits of the switch.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric system of an electric vehicle, in which an AC voltage is applied from an external AC power source to the inverter via windings of an AC motor during the charging operation of a main secondary battery. The inverter has a regenerative function enabling reverse conversion, and the motor windings operate as reactors. A contactor whose first terminals are connected to terminals of the windings and whose second terminals are shortcircuited is provided. The first terminals of the contactor are connected via connecting lines to a charging connector which is to be connected to the external power source. A portion of the vehicle body is connected to the charging connector via a ground line, and is grounded. The contactor is opened when the main secondary battery is charged, and is closed when the electric vehicle is driven.
106 Citations
20 Claims
-
1. An electric system of an electric vehicle comprising:
-
a main secondary battery; a power converter converting DC power of the main secondary battery into AC power, the power converter having a regenerative function enabling AC to DC conversion; an AC motor driving wheels of the electric vehicle, the AC motor including windings whose first terminals are connected to the AC side output of the power converter; a switch including a plurality of switching circuits, first terminals of the switching circuits being each connected to second terminals of the windings, second terminals of the switching circuits being shortcircuited; and a charging connector to be connected to an external AC power source while charging the main secondary battery, the charging connector being connected to the first terminals of the switching circuits of the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An electric vehicle for use with a battery, comprising:
-
an AC motor having a plurality of windings; means for selectively connecting the windings to one another or isolating the windings from one another; an inverter connected between the battery and the windings; and a charging connector, connected to at least one of the windings, to receive power from an external AC power source for charging the battery through said at least one of the windings and the inverter when the windings are isolated from one another. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. an electric vehicle for use with a battery, comprising:
-
an AC motor having first and second windings; an inverter connected between the battery and the windings; a switch to selectively connect the windings to one another or isolate the windings from one another; and a charging connector, connected to the switch, to receive power from an external power source for charging the battery. - View Dependent Claims (19, 20)
-
Specification