Power supply unit

Abstract

The present application proposes a power supply device, which includes a mainboard and a power conversion module, wherein the mainboard includes a first side and a third side that are relatively arranged along a first direction, and a second side and a fourth side that are relatively arranged along a second direction; the power conversion module includes a primary circuit board and a secondary module; wherein the secondary module includes a secondary circuit board, the primary circuit board, the mainboard and the secondary circuit board are electrically connected, the primary circuit board and the secondary circuit board are separated from each other in space, the secondary module also includes a secondary element and a first magnetic core element, along the third direction, the secondary element is arranged at a position close to the mainboard, and the first magnetic core element is arranged at a position far from the mainboard, wherein the first direction, the second direction and the third direction are perpendicular to each other. By separating the primary circuit board and the secondary circuit board in space, the component layout in the power supply device is made more compact, thereby improving space utilization and power density.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a power supply device. Background Art

[0002] Currently, power supplies are gradually developing towards standardized sizes. At the same time, the power density of power supplies is also increasing. This results in limited device layout space within the limited internal space of the power supply. At the same time, the increase in power density will also lead to difficulties in heat dissipation inside the power supply.

[0003] Taking the 185mm long CRPS (Common Redundant Power Supplies) power supply as an example, power supplies below 2400W mostly use traditional coil winding pin-type transformers. This structure of transformer is not only large in size, but the pins will further occupy the layout space of the motherboard. After the power supply power is increased to 3200W, if the traditional transformer is still used, first of all, the space of the motherboard layout is limited. In addition, due to the increase in power, the power loss increases, which will also lead to challenges in the heat dissipation of the power supply. Utility Model Content

[0004] In view of this, the present application proposes a power supply device to improve one or more problems in the prior art.

[0005] A first aspect of an embodiment of the present application provides a power supply device, which includes a mainboard and a power conversion module, the mainboard including a first side and a third side arranged opposite to each other along a first direction, and a second side and a fourth side arranged opposite to each other along a second direction, wherein the first direction is perpendicular to the second direction; the power conversion module includes a primary circuit board and a secondary module; wherein the secondary module includes a secondary circuit board, the primary circuit board and the secondary circuit board are both arranged on the mainboard, so that the primary circuit board, the mainboard and the secondary circuit board are electrically connected, and the primary circuit board and the secondary circuit board are spatially separated from each other. The secondary circuit board is arranged at a position close to the third side, and the primary circuit board is arranged at a position away from the third side along the first direction. The secondary module also includes a secondary element and a first magnetic core element. The secondary element and the first magnetic core element are arranged on the secondary circuit board. Along a third direction perpendicular to the first direction and the second direction, the secondary element and the first magnetic core element are arranged adjacent to each other. The secondary element is arranged at a position close to the main board, and the first magnetic core element is arranged at a position away from the main board. The first magnetic core element is arranged on the secondary circuit board to form a transformer.

[0006] In some embodiments of the present application, the secondary side module also includes a second magnetic core element, which is arranged on the secondary side circuit board, wherein along the first direction, the first magnetic core element and the second magnetic core element are arranged adjacent to each other, and the second magnetic core element is arranged at a position away from the third side, and the second magnetic core element is arranged on the secondary side circuit board to form an inductor.

[0007] In some embodiments of the present application, N secondary modules are arranged on the main board, and the N secondary modules are arranged along the second direction, wherein the transformers composed of the first magnetic core element and the secondary circuit board in the N secondary modules are connected in parallel with each other, and the inductors composed of the second magnetic core element and the secondary circuit board in the N secondary modules are connected in series with each other.

[0008] In some embodiments of the present application, the first magnetic core element and the second magnetic core element are integrally formed.

[0009] In some embodiments of the present application, an air gap is formed between the first magnetic core element and the second magnetic core element.

[0010] In some embodiments of the present application, the first magnetic core element includes a first magnetic cover and a second magnetic cover, the second magnetic core element includes a third magnetic cover and a fourth magnetic cover, and the first magnetic cover, the second magnetic cover, the third magnetic cover and the fourth magnetic cover are all provided with winding posts and side posts, and the secondary circuit board is provided with a first opening and a second opening, wherein the winding posts of the first magnetic cover and the second magnetic cover are passed through the first opening to form the transformer with the secondary circuit board, and the winding posts of the third magnetic cover and the fourth magnetic cover are passed through the second opening to form the inductor with the secondary circuit board.

[0011] In some embodiments of the present application, a first pin and a second pin are provided on the secondary circuit board, the first pin and the second pin are inserted into the main board and electrically connected to the main board, and the first pin is electrically connected to the primary circuit board through the main board, wherein the projection of the second magnetic core element on the main board completely covers the projection of the first pin on the main board.

[0012] In some embodiments of the present application, the first pin and the second pin are spaced apart by a safety distance.

[0013] In some embodiments of the present application, along the second direction, the first pin includes a first surface and a second surface that are oppositely disposed, wherein the first surface is used as an electrical input terminal, and the second surface is used as an electrical output terminal.

[0014] In some embodiments of the present application, each of the secondary side modules includes a first secondary side circuit board and a second secondary side circuit board, wherein the first secondary side circuit board and the second secondary side circuit board are both provided with the first opening and the second opening, the winding post of the first magnetic cover is passed through the first opening of the first secondary side circuit board, the winding post of the second magnetic cover is passed through the first opening of the second secondary side circuit board, the winding post of the third magnetic cover is passed through the second opening of the first secondary side circuit board, and the winding post of the fourth magnetic cover is passed through the second opening of the second secondary side circuit board.

[0015] In some embodiments of the present application, the power supply device also includes a power factor correction inductor and a power factor correction board, the power factor correction inductor is arranged on the main board; the power factor correction board is arranged on the main board; wherein, along the second direction, the power factor correction inductor, the power factor correction board and the primary circuit board are arranged in parallel and spaced apart in sequence, and the power factor correction inductor is adjacent to the second side.

[0016] In some embodiments of the present application, the power factor correction inductor, the power factor correction board and the power conversion module are all located on a first horizontal area of ​​the main board along the first direction.

[0017] In some embodiments of the present application, the power supply device also includes a fan, which is arranged at a first corner of the main board, the first corner is adjacent to the first side and the second side, the airflow of the fan is facing the first horizontal area, and the fan and the power conversion module are both located on the first horizontal area.

[0018] In some embodiments of the present application, the power supply device further includes a connector disposed at a second corner of the mainboard, the second corner being adjacent to the first side and the fourth side, and the connector being adjacent to the fan along the second direction.

[0019] In some embodiments of the present application, the power supply device further includes an electromagnetic interference filtering module disposed on the mainboard, and along the first direction, the connector and the power conversion module are respectively located on opposite sides of the electromagnetic interference filtering module.

[0020] In some embodiments of the present application, the power supply device also includes an energy storage capacitor, which is arranged on the mainboard. The energy storage capacitor is adjacent to the fourth side. Along the second direction, the energy storage capacitor is located between the fourth side and the primary circuit board.

[0021] In some embodiments of the present application, the power supply device also includes an auxiliary power supply and control board module, which is arranged at a third corner of the main board, the third corner is adjacent to the third side and the fourth side, and the auxiliary power supply and control board module is located between the secondary side circuit board and the fourth side.

[0022] In some embodiments of the present application, the connector, the electromagnetic interference filtering module, the energy storage capacitor, the auxiliary power supply and the control board module are arranged in sequence on a second horizontal area along the first direction, and the second horizontal area is parallel to the first horizontal area and does not overlap with each other.

[0023] In summary, the technical solution of the present application optimizes the power circuit path by rationally arranging the power supply device. The technical solution of the present application reduces the volume of magnetic components and improves the power density of the power supply by adopting a modular circuit design for the power supply device. The technical solution of the present application optimizes the air duct so that the high power density power supply can fully dissipate heat and work stably.

[0024] The above description will be described in detail below with an implementation method, and a further explanation will be provided for the technical solution of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the above and other purposes, features, advantages and embodiments of the present application more clearly understood, the attached drawings are described as follows:

[0026] Figure 1 is a plan view of a power supply device according to some embodiments of the present application;

[0027] Figure 2 is a circuit diagram of a power conversion circuit according to some embodiments of the present application;

[0028] Figure 3 yes Figure 2 The block diagram of the power conversion circuit;

[0029] Figure 4 is a three-dimensional diagram of a secondary side module according to some embodiments of the present application;

[0030] Figure 5 is a circuit diagram of another power conversion circuit according to some embodiments of the present application;

[0031] Figure 6 is an exploded view of a secondary side module according to some embodiments of the present application; and

[0032] Figure 7 is a schematic diagram of a secondary side circuit board according to some embodiments of the present application.

[0033]

Explanation of symbols

[0034] In order to make the above and other objects, features, advantages and embodiments of the present application more clearly understood, the attached symbols are explained as follows:

[0035] 100: Power supply unit

[0036] 101: Fan

[0037] 102: Connector

[0038] 103:Electromagnetic interference filtering module

[0039] 104: Power factor correction inductor

[0040] 105: Power factor correction board

[0041] 106: Primary circuit board

[0042] 107: Energy storage capacitor

[0043] 108: Secondary side module

[0044] 109: Auxiliary power supply and control board module

[0045] 110: Power conversion module

[0046] 121: First horizontal area

[0047] 122: Second horizontal area

[0048] 190: Motherboard

[0049] 191: First side

[0050] 192: Second side

[0051] 193: Third side

[0052] 194: Fourth side

[0053] 300: Power conversion circuit

[0054] 400: Power conversion circuit

[0055] 510: Secondary side circuit board

[0056] 511: First secondary side circuit board

[0057] 512: Second side circuit board

[0058] 520: first magnetic core element

[0059] 521: First magnetic cover

[0060] 522: Second magnetic cover

[0061] 530: second magnetic core element

[0062] 531: The third magnetic cover

[0063] 532: The fourth magnetic cover

[0064] 541: First Opening

[0065] 542: Second opening

[0066] 551: First pin

[0067] 5511: First side

[0068] 5512: Side 2

[0069] 552: Second pin

[0070] Co, Co1, Co2: output capacitors

[0071] Cr, Cr1, Cr2: resonant capacitor

[0072] Lo: Output inductance

[0073] Lr, Lr1, Lr2: resonant inductor

[0074] Lm, Lm1, Lm2: Excitation inductance

[0075] Q1-Q4: primary switch

[0076] Q5, Q6, Q7, Q8: Secondary side switches

[0077] T1, T2: Transformer

[0078] Vin: Input voltage

[0079] Vout: output voltage

[0080] X: First direction

[0081] Y: Second direction

[0082] Z: Third direction DETAILED DESCRIPTION

[0083] In order to make the description of this application more detailed and complete, reference can be made to the attached drawings and various embodiments described below, in which the same numbers represent the same or similar components. On the other hand, well-known components and steps are not described in the embodiments to avoid unnecessary limitations on this application.

[0084] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] It should be noted that in the description of this application, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0086] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "an example", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0087] Please refer to Figure 1-7 The embodiment of the present application provides a power supply device 100, which can be applied to a server or widely used in related technical fields. The power supply device 100 provided in the embodiment of the present application enables the reasonable layout of the components in the power supply device through the arrangement of components and the optimized air duct. In addition, the high power density power supply can fully dissipate heat and work stably. The specific implementation of the power supply device 100 will be described below with reference to Figures 1-7.

[0088] Figure 1 is a plan view of a power supply device 100 according to some embodiments of the present application. Figure 2 is a circuit diagram of a power conversion circuit 300 according to some embodiments of the present application. Figure 3 yes Figure 2 1 is a block diagram of a power conversion circuit 300 . Figure 4 is a three-dimensional diagram of a secondary side module 108 according to some embodiments of the present application. Figure 5 is a circuit diagram of another power conversion circuit 400 according to some embodiments of the present application. Figure 6 is an exploded view of the secondary module 108 according to some embodiments of the present application. Figure 7 FIG. 5 is a schematic diagram of a secondary circuit board 510 according to some embodiments of the present application. Figure 1-7 As shown, the power supply device 100 includes a mainboard 190 and a power conversion module 110. The power conversion module 110 includes a primary circuit board 106 and a secondary module 108. The secondary module 108 includes a secondary circuit board 510. The primary circuit board 106 and the secondary circuit board 510 are both arranged on the mainboard 190, so that the primary circuit board 106, the mainboard 190 and the secondary circuit board 510 are electrically connected. The primary circuit board 106 and the secondary circuit board 510 are separated from each other in space.

[0089] It should be noted that by making the primary circuit board 106 and the secondary circuit board 510 separate from each other in space, the overall volume of the power conversion module can be reduced compared to a power conversion module with an ordinary primary and secondary circuit boards integrated, and the separated primary circuit board 106 can be placed at other positions of the main board 190, thereby improving the flexibility of component layout, increasing space utilization, and improving power density. At the same time, compared to an ordinary power conversion module with an ordinary primary and secondary circuit boards integrated, the power path of the present application flows from the primary circuit board 106 through the main board 190 to the secondary circuit board 510, so that the power path can be adjusted more flexibly.

[0090] Specifically, in some embodiments of the present application, the mainboard 190 of the power supply device 100 includes a first side 191, a second side 192, a third side 193 and a fourth side 194, wherein the first side 191 and the third side 193 are arranged opposite to each other along a first direction X, and the second side 192 and the fourth side 194 are arranged opposite to each other along a second direction Y. The first direction X and the second direction Y are perpendicular to each other. The first side 191 is connected to the second side 192, the second side 192 is connected to the third side 193, and the third side 193 is connected to the fourth side.

[0091] Specifically, refer to Figure 1 and Figure 4 The secondary module 108 further includes a first magnetic core element 520 and a plurality of secondary elements (such as secondary switches Q5 and Q6). The plurality of secondary elements and the first magnetic core element 520 are disposed on the secondary circuit board 510. In this case, the secondary module 108 includes a first magnetic core element 520 and a plurality of secondary elements (such as secondary switches Q5 and Q6). The plurality of secondary elements and the first magnetic core element 520 are disposed on the secondary circuit board 510. The first direction X and the second direction Y are perpendicular to each other along a third direction Z (i.e., the first direction X, the second direction Y and the third direction Z are perpendicular to each other). Figure 1 The Z direction in the figure is perpendicular to the paper plane), the secondary side element and the first magnetic core element 520 are arranged adjacent to each other, and the secondary side element is arranged at a position close to the main board 190, that is, Figure 4The first magnetic core element 520 is disposed below the first magnetic core element in the circuit board 510, so that the power path from the secondary module 108 to the main board 190 can be the shortest. The first magnetic core element 520 is disposed at a position away from the main board 190, and the first magnetic core element 520 is disposed on the secondary circuit board 510 to form a transformer Tx. Further, the circuit board is provided with a primary winding and a secondary winding (not shown in the figure), and the first magnetic core element 520 and the primary winding and the secondary winding disposed on the secondary circuit board 510 form a transformer Tx.

[0092] Please refer to Figure 4 In some embodiments of the present application, the secondary module 108 further includes a second magnetic core element 530, which is disposed on the secondary circuit board 510, wherein the first magnetic core element 520 and the second magnetic core element 530 are disposed adjacent to each other along the first direction X, and the second magnetic core element 530 is disposed at a position away from the third side 193, and the second magnetic core element 530 is disposed on the secondary circuit board 510 to form an inductor Lr (for example, a resonant inductor). Further, an inductor winding (not shown in the figure) is disposed on the circuit board, and the second magnetic core element 530 and the inductor winding disposed on the secondary circuit board 510 form the inductor Lr.

[0093] In some embodiments of the present case, N secondary modules 108 are arranged on the main board 190, and the N secondary modules 108 are arranged along the second direction Y, wherein the transformer Tx composed of the first magnetic core element 520 and the secondary circuit board 510 in each secondary module 108 is connected in parallel with each other, and the inductor Lr (for example, a resonant inductor) composed of the second magnetic core element 530 and the secondary circuit board 510 in each secondary module 108 is connected in series with each other. The specific number of secondary modules 108 needs to be selected according to the actual power, and there are two secondary modules 108. Figure 5 1 is a circuit diagram of another power conversion circuit 400 according to some embodiments of the present application. The layout of the primary circuit board 106 and the secondary module 108 is shown. The primary switches Q1-Q4 and their drive circuits, the resonant capacitors Cr1, Cr2, etc. are placed on the primary circuit board 106. The resonant inductors Lr1, Lr2, the transformers T1, T2, the excitation inductors Lm1, Lm2, the secondary switches Q5-Q8 and their drive circuits, etc. are placed on the two secondary modules 108. The primary circuit board 106 and the secondary module 108 are connected as follows. Figure 1 The input voltage Vin is input to the power conversion circuit 400, and the power conversion circuit 400 provides an output voltage Vout through the output capacitor Co. Figure 5 It can be seen from the figure that the two transformers T1 and T2 are connected in parallel with each other, and the two resonant inductors Lr1 and Lr2 are connected in series with each other.

[0094] In some embodiments of the present invention, Figure 4As shown, an air gap G is formed between the first magnetic core element 520 and the second magnetic core element 530, that is, the first magnetic core element 520 and the second magnetic core element 530 are separated from each other in space. In other embodiments of the present case, the first magnetic core element 520 and the second magnetic core element 530 can be integrally formed, that is, there is no air gap G between the two.

[0095] In some embodiments of the present invention, Figure 6 As shown, the first magnetic core element 520 includes a first magnetic cover 521 and a second magnetic cover 522, the second magnetic core element 530 includes a third magnetic cover 531 and a fourth magnetic cover 532, and the first magnetic cover 521, the second magnetic cover 522, the third magnetic cover 531 and the fourth magnetic cover 532 are all provided with winding posts and side posts, and the secondary circuit board 510 is provided with a first opening 541 and a second opening 542, wherein the winding posts of the first magnetic cover 521 and the second magnetic cover 522 are passed through the first opening 541 and the secondary circuit board 510 to form a transformer Tx, and the winding posts of the third magnetic cover 531 and the fourth magnetic cover 532 are passed through the second opening 542 and the inductor Lr of the secondary circuit board 510.

[0096] In some embodiments of the present invention, Figure 6 As shown, each secondary module 108 includes a first secondary circuit board 511 and a second secondary circuit board 512, wherein the first secondary circuit board 511 and the second secondary circuit board 512 are both provided with a first opening 541 and a second opening 542, the winding post of the first magnetic cover 521 is passed through the first opening 541 of the first secondary circuit board 511, the winding post of the second magnetic cover 522 is passed through the first opening 541 of the second secondary circuit board 512, the winding post of the third magnetic cover 531 is passed through the second opening 542 of the first secondary circuit board 511, and the winding post of the fourth magnetic cover 532 is passed through the second opening 542 of the second secondary circuit board 512. In some embodiments of the present case, the primary windings on the first circuit board 511 and the second circuit board 512 are connected in series, and the secondary windings are connected in parallel.

[0097] In some embodiments of the present case, the secondary circuit board 510 is provided with a first pin 551 and a second pin 552, the first pin 551 and the second pin 552 are inserted into the main board 190 and electrically connected to the main board 190, and the first pin 551 is electrically connected to the primary circuit board 106 through the main board 190, wherein the projection of the second magnetic core element 530 on the main board 190 completely shields the projection of the first pin 511 on the main board 190, such as Figure 5 As shown, along the third direction Z, the first pin 551 is completely disposed below the second magnetic core element 530. In addition, since the first pin 511 is connected to the primary circuit board 106 through the main board 190, referring to Figure 2 and Figure 5The power of the primary circuit board flows through the first pin 551 to the resonant inductor Lr formed by the second magnetic core element 530 and the secondary circuit board 510. Since the primary circuit and the secondary circuit have different voltage levels, a safety distance needs to be reserved between the two. Therefore, the first pin 551 belongs to the circuit element on the primary side, so it is necessary to reserve a safety distance with the secondary circuit, that is, the first pin 551 needs to reserve a safety distance with the second pin 552, the secondary circuit board 510 and the secondary elements. Specifically, a safety distance can be preset between the first pin 551 and the second pin 552. According to the standard, the safety distance can be set to 6.8 mm.

[0098] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the secondary side circuit of the power conversion circuit 300, 400 is a full-wave rectifier circuit, or a mid-wave rectifier circuit. In other embodiments of the present case, the secondary side may also be a full-bridge rectifier circuit or other circuits that can achieve a rectification function, but the present case is not limited to this.

[0099] In some embodiments of the present invention, Figure 7 As shown, along the second direction Y, the first pin 551 includes a first surface 5511 and a second surface 5512 that are arranged opposite to each other, wherein the first surface 5511 is used as an electrical input terminal, and the second surface 5512 is used as an electrical output terminal. By using both surfaces of a pin as input and output at the same time, the number of pins can be effectively reduced, thereby reducing the volume, and improving space utilization and power density.

[0100] The power conversion module 110 is disposed on the main board 190. The fan 101 is disposed at a first corner of the main board, wherein the first corner is adjacent to the first side 191 and the second side 192, the wind flow of the fan 101 faces the first horizontal area 121 along the first direction X, and the fan 101 and the power conversion module 110 are both located on the first horizontal area 121. The wind flow of the fan 101 is aligned with the power conversion module 110, and the fan 101 and the power conversion module 110 are both located on the first horizontal area 121 along the straight flow direction of the wind flow, so as to facilitate heat dissipation of the power module 110.

[0101] like Figure 1As shown, along the second direction Y, the power supply device 100 further includes a power factor correction inductor 104, a power factor correction board 105 and a primary circuit board 106. The power factor correction inductor 104, the power factor correction board 105 and the primary circuit board 106 are all arranged on the main board 190 and are arranged in parallel with each other in sequence, and the power factor correction inductor 104 is arranged adjacent to the second side 192. By arranging the power factor correction inductor 104 and the power factor correction board 105 adjacent to each other and arranging the primary circuit board 106 below the power factor correction board 105, in the path of power flow, the power flows from top to bottom, that is, from the power factor correction inductor 104 to the power factor correction board 105, and then to the primary circuit board 106, so as to ensure that the power flowing out of the primary circuit board 106 is not interfered by the power factor correction inductor 104 and the power factor correction board 105. In some embodiments of the present invention, the number of the power factor correction inductor 104 is preferably two.

[0102] At the same time, the power factor correction board 105 is located between the power factor correction inductor 104 and the primary circuit board 106. The length direction of any one of the power factor correction inductor 104, the power factor correction board 105 and the primary circuit board 106 is roughly parallel to the straight flow direction of the wind flow of the fan 101. The fan 101, the power factor correction inductor 104, the power factor correction board 105 and the primary circuit board 106 are all located on the first horizontal area 121 along the straight flow direction of the wind flow, which is more conducive to heat dissipation and has a short power path. That is, by arranging the power factor correction inductor 104, the power factor correction board 105 and the primary circuit board 106 in parallel with each other in sequence, the air duct circulation effect of the fan can be better, which is more conducive to the heat dissipation of the power supply device 110.

[0103] In some embodiments of the present application, the power factor correction inductor 104 , the power factor correction board 105 , and the power conversion module 110 are all located on the first horizontal area 121 of the main board 190 along the first direction X.

[0104] In some embodiments of the present application, the power supply device 100 further includes a connector 102 . The connector 102 is disposed at a second corner of the mainboard 190 , wherein the second corner is adjacent to the first side 191 and the fourth side 194 . Along the second direction Y, the connector 102 is adjacent to the fan 101 .

[0105] In some embodiments of the present application, the power supply device 100 further includes an EMI filter module 103. The EMI filter module 103 is disposed on the mainboard 190. Along the first direction X, the connector 102 and the power conversion module 110 are located on opposite sides of the EMI filter module 103 respectively.

[0106] It should be noted that the terms "about", "approximately" or "substantially" used herein are used to modify any quantity that may vary slightly, but such slight variations do not change its essence. In the embodiments, if there is no special explanation, the error range of the value modified by "about", "approximately" or "substantially" is generally allowed within 20%, preferably within 10%, and more preferably within 5%.

[0107] like Figure 1 As shown, the power factor correction inductor 104, the power factor correction board 105 and the primary circuit board 106 are all located between the secondary module 108 and the fan 101. The fan 101 and the secondary module 108 are both located in the first horizontal area 121 along the straight flow direction of the wind flow to facilitate heat dissipation.

[0108] In some embodiments of the present application, the power supply device 100 further includes an energy storage capacitor 107. The energy storage capacitor 107 is disposed on the mainboard 190, and the energy storage capacitor 107 is disposed adjacent to the fourth side 194. Along the second direction Y, the energy storage capacitor 107 is located between the fourth side 194 and the primary circuit board 106. The energy storage capacitor 107, which is relatively large in size, is placed at the lower side of the primary circuit board 106 to block the wind flow, and the wind flow can be better directed to the power factor correction inductor 104, the power factor correction board 105, the primary circuit board 106, and the secondary module 108.

[0109] In some embodiments of the present application, the power supply device 100 further includes an auxiliary power supply and control board module 109. The auxiliary power supply and control board module 109 is disposed at the third corner of the main board 190, the third corner is adjacent to the third side 193 and the fourth side 194, the connector 102, the electromagnetic interference filter module 103, the energy storage capacitor 107, the auxiliary power supply and control board module 109 are sequentially arranged on the second horizontal area 122 along the first direction X, and the second horizontal area 122 and the first horizontal area 121 are parallel to each other and do not overlap. For example, the auxiliary power supply and control board module 109 includes modules with less heat generation such as the auxiliary power supply and the control board, and has low requirements for heat dissipation. It is placed at the corner farthest from the fan 101 on the main board 190, and is placed in the second horizontal area 122 with the larger energy storage capacitor 107. For example, the control board uses a fully digital control fan 101 and a power conversion module 110.

[0110] In some embodiments of the present case, the fan 101, the connector 102, the power factor correction inductor 104, the power factor correction board 105, the primary circuit board 106, the energy storage capacitor 107, the secondary module 108, and the auxiliary power supply and control board module 109 are all erected on the main board 190. The filter element (not shown in the figure) of the electromagnetic interference filter module 103 is erected on the main board 190 and is located between the connector 102 and the energy storage capacitor 107, and the remaining circuits of the electromagnetic interference filter module 103 are arranged flat on the main board 190, so the height of the remaining circuits of the electromagnetic interference filter module 103 is much lower than the height of the fan 101 and the power conversion module 110, and the remaining circuits of the electromagnetic interference filter module 103 will not hinder the path of the wind flow of the fan 101 to the multiple power modules 110. Wherein, erect refers to along the third direction Z. In the first horizontal area 121, the height of the fan 101 is higher than the height of the electromagnetic interference filter module 103, that is, the height of the fan 101 is higher than the height of the remaining circuits of the electromagnetic interference filter module 103. In some embodiments of the present case, the number of filter elements is preferably two.

[0111] For example, the fan 101, connector 102, electromagnetic interference filter module 103, power factor correction inductor 104, power factor correction board 105, primary circuit board 106, energy storage capacitor 107, secondary module 108, and auxiliary power supply and control board module 109 on the mainboard 190 can all be modular components, and the electrical connection between the aforementioned modular components on the mainboard 190 can be achieved through the mainboard 190. Alternatively, some modular components on the mainboard 190 can also selectively achieve electrical connection without the mainboard 190. It should be understood that in the embodiments and claims, the description involving "electrical connection" can generally refer to a component being indirectly electrically coupled to another component through other components, or a component being directly electrically connected to another component without passing through other components.

[0112] like Figure 1 As shown in FIG. 1 , the power transmission path inside the power supply device 100 is as follows: the input power is first connected to the power supply device 100 through the input connector 102, and then connected to the power factor correction inductor 104 after passing through the electromagnetic interference filter module 103, and then connected to the next-level primary circuit board 106 after passing through the power factor correction board 105. Finally, it is output to the outside of the power supply device 100 through the input terminal after passing through the secondary module 108.

[0113] Figure 2 is a circuit diagram of a power conversion circuit 300 according to some embodiments of the present application, Figure 3 yes Figure 2 The block diagram of the power conversion circuit 300 is shown in FIG. Figures 2-3As shown in FIG. 1 , the layout of the primary circuit board 106 and the secondary module 108 is shown. The primary switches Q1-Q4 and their drive circuits, the resonant capacitor Cr, etc. are placed on the primary circuit board 106. The resonant inductor Lr, the transformer T1, the excitation inductor Lm, the secondary switches Q5 and Q6 and their drive circuits, etc. are placed on the secondary module 108. The primary circuit board 106 and the secondary module 108 are connected as shown in FIG. Figure 1 The input voltage Vin is input to the power conversion circuit 300, and the power conversion circuit 300 provides an output voltage Vout through the output inductor Lo and the output capacitor Co.

[0114] Figure 4 FIG. 1 is a perspective view of a secondary module 108 according to some embodiments of the present application. Figure 4 As shown, the secondary module 108 adopts a modular circuit design, and a complete circuit including secondary elements (such as secondary switches Q5 and Q6), resonant inductor Lr, transformer T1, etc. is integrated on the secondary circuit board (PCB) 510, wherein the windings of magnetic components such as the resonant inductor Lr and the transformer T1 are formed by copper plating in the secondary circuit board 510, which helps to improve the power density and reduce the circuit volume; and the larger magnetic components on the module circuit (i.e., the resonant inductor Lr and the transformer T1) will block the air duct and divert the wind to the secondary switches Q5 and Q6 that generate severe heat, thereby improving the heat dissipation efficiency.

[0115] In summary, the technical solution of the present application has obvious advantages and beneficial effects compared with the prior art. The reasonable layout of the power supply device 100 of the present application optimizes the power circuit path. The power supply device 100 of the present application adopts a modular circuit design, which reduces the volume of magnetic parts and improves the power density of the power supply. The optimized air duct of the present application enables the high power density power supply to fully dissipate heat and work stably.

[0116] Although the present application has been disclosed in the above implementation mode, it is not intended to limit the present application. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the definition of the attached claims.

Claims

1. A power supply device, characterized in that: include: A main board, comprising a first side and a third side arranged opposite to each other along a first direction, and a second side and a fourth side arranged opposite to each other along a second direction, wherein the first direction is perpendicular to the second direction; A power conversion module, including a primary side circuit board and a secondary side module; Among them, the secondary side module includes a secondary side circuit board, the primary side circuit board and the secondary side circuit board are both arranged on the main board, so that the primary side circuit board, the main board and the secondary side circuit board are electrically connected, the primary side circuit board and the secondary side circuit board are separated from each other in space, and along the first direction, the secondary side circuit board is arranged at a position close to the third side, and the primary side circuit board is arranged at a position away from the third side. The secondary side module also includes a secondary side element and a first magnetic core element, the secondary side element and the first magnetic core element are arranged on the secondary side circuit board, along the third direction perpendicular to the first direction and the second direction, the secondary side element and the first magnetic core element are arranged adjacent to each other, the secondary side element is arranged at a position close to the main board, and the first magnetic core element is arranged at a position away from the main board. The first magnetic core element is arranged on the secondary side circuit board to form a transformer.

2. The power supply device according to claim 1, characterized in that: The secondary side module also includes a second magnetic core element, which is arranged on the secondary side circuit board, wherein along the first direction, the first magnetic core element and the second magnetic core element are arranged adjacent to each other, and the second magnetic core element is arranged at a position away from the third side, and the second magnetic core element is arranged on the secondary side circuit board to form an inductor.

3. The power supply device according to claim 2, characterized in that: N secondary modules are arranged on the main board, and the N secondary modules are arranged along the second direction, wherein the transformers composed of the first magnetic core element and the secondary circuit board in the N secondary modules are connected in parallel with each other, and the inductors composed of the second magnetic core element and the secondary circuit board in the N secondary modules are connected in series with each other.

4. The power supply device according to claim 2, characterized in that: The first magnetic core element and the second magnetic core element are integrally formed.

5. The power supply device according to claim 2, characterized in that: An air gap is formed between the first magnetic core element and the second magnetic core element.

6. The power supply device according to claim 2, characterized in that: The first magnetic core element includes a first magnetic cover and a second magnetic cover, the second magnetic core element includes a third magnetic cover and a fourth magnetic cover, and the first magnetic cover, the second magnetic cover, the third magnetic cover and the fourth magnetic cover are all provided with winding posts and side posts, and the secondary circuit board is provided with a first opening and a second opening, wherein the winding posts of the first magnetic cover and the second magnetic cover are passed through the first opening to form the transformer with the secondary circuit board, and the winding posts of the third magnetic cover and the fourth magnetic cover are passed through the second opening to form the inductor with the secondary circuit board.

7. The power supply device according to claim 2, characterized in that: The secondary circuit board is provided with a first pin and a second pin, the first pin and the second pin are inserted into the main board and electrically connected to the main board, and the first pin is electrically connected to the primary circuit board through the main board, wherein the projection of the second magnetic core element on the main board completely covers the projection of the first pin on the main board.

8. The power supply device according to claim 7, characterized in that: The first pin and the second pin are spaced apart by a safety distance.

9. The power supply device according to claim 7, characterized in that: Along the second direction, the first pin includes a first surface and a second surface that are oppositely disposed, wherein the first surface is used as an electrical input terminal, and the second surface is used as an electrical output terminal.

10. The power supply device according to claim 6, characterized in that: Each of the secondary side modules includes a first secondary side circuit board and a second secondary side circuit board, wherein the first secondary side circuit board and the second secondary side circuit board are both provided with the first opening and the second opening, the winding post of the first magnetic cover is passed through the first opening of the first secondary side circuit board, the winding post of the second magnetic cover is passed through the first opening of the second secondary side circuit board, the winding post of the third magnetic cover is passed through the second opening of the first secondary side circuit board, and the winding post of the fourth magnetic cover is passed through the second opening of the second secondary side circuit board.

11. The power supply device according to claim 1, characterized in that: Also includes: A power factor correction inductor is arranged on the main board; A power factor correction board is arranged on the main board; Wherein, along the second direction, the power factor correction inductor, the power factor correction board and the primary circuit board are arranged in parallel and spaced apart in sequence, and the power factor correction inductor is adjacent to the second side.

12. The power supply device according to claim 11, characterized in that: The power factor correction inductor, the power factor correction board and the power conversion module are all located on a first horizontal area of ​​the main board along the first direction.

13. The power supply device according to claim 12, characterized in that: Also includes: A fan is arranged at a first corner of the mainboard, the first corner is adjacent to the first side and the second side, the wind flow of the fan faces the first horizontal area, and the fan and the power conversion module are both located on the first horizontal area.

14. The power supply device according to claim 13, characterized in that: Also includes: The connector is arranged at a second corner of the mainboard, the second corner is adjacent to the first side and the fourth side, and the connector is adjacent to the fan along the second direction.

15. The power supply device according to claim 14, characterized in that: Also includes: The electromagnetic interference filter module is arranged on the main board. Along the first direction, the connector and the power conversion module are respectively located on two opposite sides of the electromagnetic interference filter module.

16. The power supply device according to claim 15, characterized in that: Also includes: An energy storage capacitor is arranged on the main board. The energy storage capacitor is arranged adjacent to the fourth side. Along the second direction, the energy storage capacitor is located between the fourth side and the primary circuit board.

17. The power supply device according to claim 16, characterized in that: Also includes: The auxiliary power supply and control board module is arranged at the third corner of the main board, the third corner is adjacent to the third side and the fourth side, and the auxiliary power supply and control board module is located between the secondary side circuit board and the fourth side.

18. The power supply device according to claim 17, characterized in that: The connector, the electromagnetic interference filter module, the energy storage capacitor, the auxiliary power supply and the control board module are sequentially arranged in a second horizontal area along the first direction, and the second horizontal area is parallel to the first horizontal area and does not overlap.

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