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US 11,063,518 B1Granted
Bi-directional isolated DC-DC converter for the electrification of transportation
AssigneeVanner, Inc.
InventorsAlexander Cook, Alexander Isurin
Life of this patent
Estimating the term…
Abstract
A topology for an isolated, bi-directional, DC-DC converter, that provides step-up and step-down functionality, with a reduced transformer turns ratio, allows a simplified transformer design with reduced cost and increased efficiency. This topology also has a very small level of re-circulating current, relative to other topologies regarding cost and performance.
Claims4
A bi-directional DC-DC converter (50) comprising:
- a first stage (30) comprising:
- a first port (22) connected between a first node (N1) and ground;
- the first port (22) being bi-directionally operable as an output or an input;
- the first port (22) being operatively connected to a primary winding (80) of a first transformer (Tr1);
- a second stage (40) comprising:
- a second port (24) connected between seventh and eighth nodes (N7, N8);
- the second port (24) being bi-directionally operable as an output or an input;
- the second port (24) being operatively connected to a secondary winding (82) of the first transformer (Tr1);
- the secondary winding of the first transformer having first and second terminals;
- a third stage (60) comprising:
- a second resonant inductor (Lr2) having first and second terminals,
- a fifth resonant capacitor (Cr5) having first and second terminals;
- a primary winding (90) of a second transformer (Tr2),
- the primary winding of the second transformer having first and second terminals;
- a secondary winding (92) of the second transformer (Tr2),
- the secondary winding of the second transformer having first and second terminals;
- a rectifier (70) having an input comprising first and second terminals;
- the rectifier (70) having an output comprising first and second terminals;
- the first terminal of the second resonant inductor (Lr2) being connected to a third node (N3);
- the second terminal of the second resonant inductor (Lr2) being connected to a thirteenth node (N13);
- the first terminal of the fifth resonant capacitor (Cr5) being connected to a fourth node (N4);
- the second terminal of the fifth resonant capacitor (Cr5) being connected to an eighteenth node (N18);
- the first terminal of the input of the rectifier (70) being connected to a fourteenth node (N14);
- the second terminal of the input of the rectifier (70) being connected to a seventeenth node (N17);
- the first terminal of the output of the rectifier (70) being connected to a sixteenth node (N16);
- the second terminal of the output of the rectifier (70) being connected to a fifteenth node (N15);
- the primary winding (90) of the second transformer (Tr2) being connected between the second resonant inductor (Lr2) and the fifth resonant capacitor (Cr5);
- the fourth and thirteenth nodes not always being at the same electrical potential.
25 more elements
A bi-directional DC-DC converter (50) comprising:
- a first stage (30) comprising:
- a first port (22) connected between a first node (N1) and ground;
- the first port (22) being bi-directionally operable as an output or an input;
- the first port (22) being operatively connected to a primary winding (80) of a first transformer (Tr1);
- a second stage (40) comprising:
- a second port (24) connected between seventh and eighth nodes (N7, N8);
- the second port (24) being bi-directionally operable as an output or an input;
- the second port (24) being operatively connected to a secondary winding (82) of the first transformer (Tr1);
- the secondary winding of the first transformer having first and second terminals;
- a third stage (60) comprising:
- a second resonant inductor (Lr2) having first and second terminals,
- a fifth resonant capacitor (Cr5) having first and second terminals;
- a primary winding (90) of a second transformer (Tr2),
- the primary winding of the second transformer having first and second terminals;
- a secondary winding (92) of the second transformer (Tr2),
- the secondary winding of the second transformer having first and second terminals;
- a rectifier (70) having an input comprising first and second terminals;
- the rectifier (70) having an output comprising first and second terminals;
- the first terminal of the second resonant inductor (Lr2) being connected to a third node (N3);
- the second terminal of the second resonant inductor (Lr2) being connected to a thirteenth node (N13);
- the first terminal of the fifth resonant capacitor (Cr5) being connected to a fourth node (N4);
- the second terminal of the fifth resonant capacitor (Cr5) being connected to an eighteenth node (N18);
- the first terminal of the primary winding (90) of the second transformer (Tr2) being connected to the thirteenth node (N13);
- the second terminal of the primary winding (90) of the second transformer (Tr2) being connected to the eighteenth node (N18);
- the first terminal of the secondary winding (92) of the second transformer (Tr2) being connected to a fourteenth node (N14);
- the second terminal of the secondary winding (92) of the second transformer (Tr2) being connected to a seventeenth node (N17);
- the first terminal of the input of the rectifier (70) being connected to the fourteenth node (N14);
- the second terminal of the input of the rectifier (70) being connected to the seventeenth node (N17);
- the first terminal of the output of the rectifier (70) being connected to a sixteenth node (N16);
- the second terminal of the output of the rectifier (70) being connected to a fifteenth node (N15).
27 more elements
Dependencies are inferred from the claim text.