Single-stage power conversion device and inductor assembly

A single-stage power conversion device, comprising a circuit substrate, two transformer assemblies, and three inductor assemblies, wherein the circuit substrate comprises an upper surface and a lower surface opposite to each other;

• Each of the transformer assemblies comprises a primary-side winding, at least two secondary-side winding combinations, and a transformer magnetic core, wherein each inductor assembly comprises an inductor winding and an inductor magnetic core;
• the primary-side winding and the secondary-side winding combination are arranged within the circuit substrate and/or on the upper surface and/or the lower surface;
• the transformer magnetic core is respectively assembled to the primary-side winding and the secondary-side winding combination from the upper surface and the lower surface;
• each of the inductor assemblies is provided on the lower surface;
• The transformer assemblies and the inductor assemblies are sequentially arranged according to the order of the inductor assembly, the transformer assembly, the inductor assembly, the transformer assembly, and the inductor assembly.

An inductor assembly, comprising an inductor magnetic core, an output inductor winding, and an auxiliary assembly;

• the inductor magnetic core includes a window and a frame surrounding the window, the frame includes a groove;
• the output inductor winding is in an "I" shape, and the output inductor winding is penetrated through the window;
• the auxiliary assembly is in an "n" shape, and the auxiliary assembly is spanned over the frame and is clamped in the groove;
• the auxiliary assembly includes an auxiliary winding and an auxiliary connector;
• and the auxiliary winding and the inductor winding are disposed in the window.

A single-stage power conversion device using a four-phase power circuit, comprising a circuit substrate and an adapter board;

• the circuit substrate and the adapter board both comprise an upper surface and a lower surface opposite to each other, and the lower surface of the circuit substrate is disposed adjacent to the upper surface of the adapter board;
• the upper surface of the circuit substrate has a first symmetry axis extending in an X-direction and a second symmetry axis extending in a Y-direction, and the circuit substrate is divided into a first region, a second region, a third region and a fourth region by the first symmetry axis and the second symmetry axis;
• the four regions are arranged clockwise according to the order of the first region, the second region, the fourth region and the third region;
• the first region is used for setting a first phase power circuit;
• the second region is used for setting a second phase power circuit;
• the third region is used for setting a third phase power circuit;
• the fourth region is used for setting a fourth phase power circuit;
• The first phase power circuit and the second phase power circuit are arranged on one side of the first symmetry axis, and are symmetrically arranged along the second symmetry axis;
• the third phase power circuit and the fourth phase power circuit are arranged on the other side of the first symmetry axis, and are symmetrically arranged along the second symmetry axis;
• the first phase power circuit and the third phase power circuit are symmetrically arranged along the first symmetry axis, and the second phase power circuit and the fourth phase power circuit are symmetrically arranged along the first symmetry axis;
• the main circuit topology of the four-phase power circuit is the same.