| 摘要 |
The present disclosure discloses a bi-directional DC-DC converter, comprising a primary-side inverting/rectifying module, an isolated transformer, and a secondary-side rectifying/inverting module, wherein the primary-side inverting/rectifying module comprises a first bridge arm composed of a first switching component and a second switching component connected in series and a clamping circuit comprising a resonant inductor and a clamping bridge arm composed of a first semiconductor component and a second semiconductor component connected in series, and two terminals of the resonant inductor are respectively coupled to a common node of the first switching component and the second switching component and a common node of the first semiconductor component and the second semiconductor component. The present disclosure can improve transformer efficiency while achieving the soft switching of the switching components. |
| 主权项 |
1. A bi-directional DC-DC converter, comprising:
a primary-side inverting/rectifying module, two terminals of the primary-side inverting/rectifying module at a primary side being coupled to a first DC port, for receiving a DC power from the first DC port or outputting a DC power to the first DC port; an isolated transformer comprising a primary winding and a secondary winding, two terminals of the primary winding being respectively coupled to two terminals of the primary-side inverting/rectifying module at a secondary side; a secondary-side rectifying/inverting module comprising at least a switching component, wherein, two terminals of the secondary-side rectifying/inverting module at the primary side are respectively coupled to two terminals of the secondary winding, and two terminals of the secondary-side rectifying/inverting module at the secondary side are respectively coupled to a second DC port, and the secondary-side rectifying/inverting module is configured to rectify energy from the isolated transformer and output the rectified current to the second DC port, or receive a DC power from the second DC port; wherein the primary-side inverting/rectifying module comprises a first bridge arm composed of a first switching component and a second switching component connected in series and a clamping circuit comprising a resonant inductor and a clamping bridge arm composed of a first semiconductor component and a second semiconductor component connected in series, and two terminals of the resonant inductor are respectively coupled to a common node of the first switching component and the second switching component and a common node of the first semiconductor component and the second semiconductor component. |
