US 6,661,685 B2 · Voltage conversion apparatus

Abstract

A voltage conversion apparatus is connected between a first charging/discharging device and a second charging/discharging device, and performs voltage conversion between the first and second charging/discharging devices. The apparatus includes a first switching device having one terminal connected to the first charging/discharging device, a second switching device connected between the other terminal of the first switching device and the earth, a third switching device having one terminal connected to the second charging/discharging device, a fourth switching device connected between the other terminal of the third switching device and the earth, and a coil provided between the other terminal of the first switching device and the other terminal of the third switching device. A controller is provided for controlling the first through fourth switching devices, such that the first and fourth switching devices are switched on and off in the same phase, and the second and third switching devices are switched on and off in the same phase that is reverse to that of switching of the first and fourth switching devices.

Claims11

Dependent claims

A voltage conversion apparatus which is connected between a first charging/discharging device and a second charging/discharging device and which performs voltage conversion between the first charging/discharging device and the second charging/discharging device, comprising:

a first switching device having a first terminal and a second terminal, the first terminal being connected to the first charging/discharging device;
a second switching device connected between the second terminal of the first switching device and ground;
a third switching device having a third terminal and a fourth terminal, the third terminal being connected to the second charging/discharging device;
a fourth switching device connected between the fourth terminal of the third switching device and the ground;
a coil provided between the second terminal of the first switching device and the fourth terminal of the third switching device;
and
a controller that controls operations of the first switching device, the second switching device, the third switching device and the fourth switching device, such that the first switching device and the fourth switching device are switched on and off in a first phase, and the second switching device and the third switching device are switched on and off in a second phase that is reverse to the first phase of switching of the first switching device and the fourth switching device.

4 more elements

a first switching device having a source and a drain, the drain being connected to the first charging/discharging device;
a second switching device having a drain connected to the source of the first switching device, the second switching device having a source connected to ground;
a third switching device having a source and a drain, the drain being connected to the second charging/discharging device;
a fourth switching device having a drain connected to the source of the third switching device, the fourth switching device having a source connected to the ground;
a coil provided between the source of the first switching device and the source of the third switching device;
and
a controller that controls operations of the first switching device, the second switching device, the third switching device and the fourth switching device, such that the first switching device and the fourth switching device are switched on and off in a first phase, and the second switching device and the third switching device are switched on and off in a second phase that is reverse to the first phase of switching of the first switching device and the fourth switching device.

4 more elements

Dependencies are inferred from the claim text.

Voltage conversion apparatus

Life of this patent

Voltage conversion apparatus

Life of this patent

Abstract

Claims11