Power supply device

Patent metadata

Field	Value
Publication number	US-12355347-B2
Application number	US-202318209010-A
Country	US
Kind code	B2
Filing date	Jun 13, 2023
Priority date	Aug 2, 2022
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A power supply device is disclosed and includes a housing, a power board, an output terminal and a DCDC conversion module. The housing includes an accommodation space, and a first opening of a rear plate in communication with the accommodation space. The power board disposed in parallel to the lower plate is at least partially accommodated in the accommodation space, and a peripheral edge is disposed adjacent to the rear plate. The output terminal is disposed in parallel to the lower plate, and passes through the first opening of the rear plate. The DCDC conversion module is accommodated in the accommodation space and includes a primary circuit, a transformer and a secondary circuit. The transformer and the secondary circuit are arranged on the power board in sequence. The secondary circuit is arranged on part of the power board existing the peripheral edge and electrically connected to the output terminal.

First claim

What is claimed is:

1. A power supply device, comprising:
a housing comprising an accommodation space, a rear plate and a lower plate, wherein the rear plate comprises a first opening, and the first opening is in communication with the accommodation space;
a power board disposed in parallel to the lower plate, at least partially accommodating in the accommodation space, and comprising at least two first through-holes, a peripheral edge, a first side and a second side, wherein the first side and the second side are opposite to each other, the at least two first through-holes are passed through the first side and the second side of the power board, and the peripheral edge is disposed adjacent to the rear plate;
an output terminal disposed in parallel to the lower plate, and passing through the first opening of the rear plate; and
a DCDC conversion module accommodating in the accommodation space and comprising a primary circuit, a transformer and a secondary circuit, wherein the transformer and the secondary circuit are arranged on the power board in sequence, the secondary circuit is arranged on part of the power board existing the peripheral edge and electrically connected to the output terminal, and the transformer comprises a transformer winding, at least two first magnetic columns, a first magnetic cover plate and a second magnetic cover plate, wherein at least part of the transformer winding is formed by laying copper in the power board, the at least two first magnetic columns pass through the at least two first through-holes of the power board, respectively, and the first magnetic cover plate and the second magnetic cover plate are disposed correspondingly to the first side and the second side of the power board, respectively, and connected to each other through the at least two first magnetic columns;
wherein the primary circuit comprises a bus capacitor, and a capacitor body of the bus capacitor is extended along a first direction and disposed on the first magnetic cover plate of the transformer, and the first direction is perpendicular to the rear plate.

2. The power supply device according to claim 1 , wherein the primary circuit further comprises at least one primary power component, wherein the at least one primary power component is disposed on the first side of the power board, and the primary circuit, the transformer and the secondary circuit are arranged along the first direction in sequence.

3. The power supply device according to claim 2 , wherein the bus capacitor further comprises a bus-capacitor circuit board, and the bus-capacitor circuit board is inserted on the first side of the power board and disposed adjacent to the at least one primary power component, wherein an electrical connection between the bus-capacitor circuit and the at least one primary power component is implemented by laying copper pour in the power board, and an end of the capacitor body is connected to the bus-capacitor circuit board.

4. The power supply device according to claim 1 , wherein an electrical connection between the output terminal and the DCDC conversion module is implemented by laying copper in the power board.

5. The power supply device according to claim 1 , wherein the output terminal is a gold finger formed by laying copper in a portion of the power board existing the peripheral edge, and the gold finger is configured to connect to an external terminal.

6. The power supply device according to claim 1 , wherein the output terminal is a metal conductive sheet, the peripheral edge of the power board is accommodating in the accommodation space, a side of the metal conductive sheet is fixedly connected to the peripheral edge of the power board, and the metal conductive sheet is configured to connect to an external terminal.

7. The power supply device according to claim 1 , wherein a surface of the second magnetic cover plate is fixed to the second side of the power board by pasting.

8. The power supply device according to claim 1 , wherein the secondary circuit comprises at least one secondary power component and an output capacitor, and the at least one secondary power component and the output capacitor are arranged on the power board and electrically connected to each other by laying copper in the power board.

9. The power supply device according to claim 1 , wherein the DCDC conversion module further comprises an LLC resonant circuit, the LLC resonant circuit comprises a resonant inductor and a resonant capacitor, the resonant capacitor is disposed on the power board, and the resonant inductor and the resonant capacitor are arranged between the transformer and the primary circuit.

10. The power supply device according to claim 9 , wherein the resonant inductor comprises an inductor winding, at least one second magnetic column, a third magnetic cover plate and a fourth magnetic cover plate, the power board comprises at least one second through-hole, the at least one second through-hole is passed through the first side and the second side of the power board, and located between the at least two first through-holes and the peripheral edge, wherein at least part of the inductor winding is formed by laying copper in the power board, the at least one second magnetic column passes through the at least one second through-hole of the power board, and the third magnetic cover plate and the fourth magnetic cover plate are disposed correspondingly to the first side and the second side of the power board, respectively, and connected to each other through the at least one second magnetic column.

11. The power supply device according to claim 10 , further comprising an additional circuit board disposed between the power board and the first and the third magnetic cover plate, or disposed between the power board and the second and the fourth magnetic cover plate, wherein the additional circuit board comprises at least two third through-holes and at least one fourth through-hole, the at least two third through-holes and the at least one fourth through-hole are passed through the additional circuit board, the at least two first magnetic columns correspondingly pass through the at least two third through-holes of the additional circuit board, the at least one second magnetic column correspondingly passes through the at least one fourth through-hole of the additional circuit board, and part of the transformer winding and part of the inductor winding are formed by laying copper in the additional circuit board.

12. The power supply device according to claim 10 , wherein the third magnetic cover plate and the first magnetic cover plate are integrated into an integral structure, and/or the fourth magnetic cover plate and the second magnetic cover plate are integrated into an integral structure, and/or the fourth magnetic cover plate is fixed to the second side of the power board by pasting.

13. The power supply device according to claim 1 , further comprising an additional circuit board disposed between the power board and the first magnetic cover plate, or disposed between the power board and the second magnetic cover plate, wherein the additional circuit board comprises at least two third through-holes, the at least two third through-holes are passed through the additional circuit board, the at least two first magnetic columns correspondingly pass through the at least two third through-holes of the additional circuit board, and part of the transformer winding is formed by laying copper in the additional circuit board.

14. The power supply device according to claim 1 , wherein the power supply device further comprises an auxiliary power supply unit inserted on the first side

Assignees

• Delta Electronics Shanghai Co

Inventors

• Dong Kai
• Fan Bing
• Wang Dongyu
• Sun Weibo

Classifications

• H05K2201/1003

  Non-printed inductor · CPC title

• H05K1/115

  Via connections; Lands around holes or via connections (H05K1/112 takes precedence) · CPC title

• H02M3/33576

  having at least one active switching element at the secondary side of an isolation transformer · CPC title

• H01F27/24

  Magnetic cores · CPC title

• H05K2201/10015

  Non-printed capacitor · CPC title