Module power supply, circuit system and electronic equipment

Abstract

The invention provides a module power supply, a circuit system and an electronic device, the module power supply is used for converting a first direct current into a second direct current, and the module power supply comprises a magnetic core structure, a planar transformer structure formed by a plurality of stacked winding layers, a current input structure and a current output structure. The current input structure is arranged on the horizontal side of the planar transformer structure, so that alternating current is input into the corresponding winding layers in the horizontal direction. And the current output structure is arranged on the horizontal side of the planar transformer structure, so that the current output structure can complete the rectification of alternating current in the horizontal direction, and the current circulation paths in each winding layer are ensured to be the same. Due to the fact that the circulation paths of currents in all the winding layers are the same, compared with a module power supply in the prior art, the overall impedance of the planar transformer structure can be reduced in an equal proportion along with increase of the number of the winding layers connected in parallel, and therefore loss of the module power supply is effectively optimized.

Description

Technical Field

[0001] The present invention relates to the field of power supplies, and in particular to a module power supply, a circuit system and an electronic device. Background Art

[0002] With the rapid development of artificial intelligence cloud computing centers and new energy vehicles, the industry's requirements for the power density and efficiency of 48V DC-DC module power supplies are getting higher and higher. Although increasing the switching frequency of the module power supply to the MHz level can effectively reduce the size of the module power supply and help improve the power density of the module power supply. However, in high-power application scenarios, the existing module power supply will produce significant losses due to the proximity effect and skin effect of high-frequency and high-current. Therefore, loss optimization design for the module power supply is crucial.

[0003] The prior art generally achieves the loss optimization of the module power supply by optimizing the overall impedance of the transformer in the module power supply. However, the prior art has limitations in optimizing the overall impedance of the transformer, which results in the limitation of the loss optimization of the module power supply.

[0004] Therefore, providing a module power supply that effectively optimizes the overall impedance of the transformer and thus effectively optimizes power loss has become a technical problem that the industry urgently needs to solve. Summary of the invention

[0005] The embodiments of the present invention provide a module power supply, a circuit system and an electronic device to solve the problem that the prior art has limitations in optimizing the overall impedance of the transformer, thereby limiting the loss optimization of the module power supply.

[0006] In order to solve the above technical problems, the technical solution of the present invention provides a modular power supply for converting a first direct current into a second direct current, and the modular power supply comprises:

[0007] Core structure;

[0008] A planar transformer structure, the planar transformer structure surrounds the magnetic core structure and is penetrated by the magnetic core structure, the planar transformer structure comprises: a plurality of winding layers, the plurality of winding layers are stacked in sequence along a vertical direction and connected in parallel, each winding layer is used to convert an input first alternating current into a corresponding second alternating current according to the magnetic core structure;

[0009] A current input structure, the current input structure being attached to the first side of the planar transformer structure, the current input structure being used to divide an externally input first direct current into a plurality of third direct currents, convert each third direct current into a corresponding first alternating current, and input each first alternating current into the corresponding winding layer along a horizontal direction;

[0010] a current output structure, the current output structure being attached to the second side of the planar transformer structure, the current output structure being used to rectify the second alternating current in each winding layer and output a fourth direct current, and to combine each of the fourth direct currents to output the second direct current;

[0011] The first side and the second side of the planar transformer structure are opposite to each other in a horizontal direction.

[0012] Optionally, the current input structure includes:

[0013] a plurality of primary switch substructures, wherein the plurality of primary switch substructures are all attached to the first side of the planar transformer structure, the plurality of primary switch substructures are arranged at intervals and connected in parallel on the first side of the planar transformer structure, and each of the primary switch substructures is used to convert the input third direct current into the corresponding first alternating current and output it to the corresponding winding layer in the planar transformer structure;

[0014] A patterned current input structure is disposed on the first side of the planar transformer structure, and the patterned current input structure is used to transmit the first alternating current to a corresponding winding layer in the planar transformer structure.

[0015] Optionally, the current output structure includes:

[0016] a plurality of secondary switch substructures, wherein the plurality of secondary switch substructures are all attached to the second side of the planar transformer structure, the plurality of secondary switch substructures are arranged at intervals and connected in parallel on the second side of the planar transformer structure, and each of the secondary switch substructures is used to rectify the corresponding second alternating current and output the fourth direct current;

[0017] A patterned current output structure is disposed on the second side of the planar transformer structure, and the patterned current output structure is used to transmit the second alternating current to the corresponding secondary side switch substructure.

[0018] Optionally, the current input structure includes:

[0019] a first device board structure, wherein a first surface of the first device board structure is attached to a first side of the planar transformer structure, and a plurality of first current through holes arranged at intervals are provided in the first device board structure, and each of the first current through holes is used to transmit the corresponding first alternating current to the corresponding winding layer;

[0020] a plurality of primary switch substructures, wherein the plurality of primary switch substructures are all attached to the second surface of the first device board structure, the plurality of primary switch substructures are arranged at intervals on the second surface of the first device board structure and connected in parallel, and each of the primary switch substructures is used to convert the input third direct current into the corresponding first alternating current and output it to the first device board structure;

[0021] The first surface and the second surface of the first device board structure are opposite to each other in a horizontal direction.

[0022] Optionally, the current output structure includes:

[0023] a second device board structure, wherein a first surface of the first device board structure is attached to a second side of the planar transformer structure, and a plurality of second current through holes arranged at intervals are provided in the second device board structure, and each of the second current through holes is used to output a second alternating current of a corresponding winding layer;

[0024] a plurality of secondary switch substructures, wherein the plurality of secondary switch substructures are all attached to the second surface of the second device board structure, the plurality of secondary switch substructures are arranged at intervals on the second surface of the second device board structure and connected in parallel, and each of the secondary switch substructures is used to rectify the corresponding second alternating current and output the fourth direct current;

[0025] The first surface and the second surface of the second device board structure are opposite to each other in a horizontal direction.

[0026] Optionally, the primary side switch substructure includes a full-bridge switch circuit.

[0027] Optionally, the secondary side switch substructure includes a bridge rectifier circuit.

[0028] Optionally, each of the winding layers includes a primary winding and a secondary winding; the primary winding is used to receive the first alternating current; the secondary winding is clamped in the primary winding, and the secondary winding is used to receive the second alternating current according to the alternating magnetic field generated by the magnetic core structure.

[0029] Optionally, the number of groups of the winding layers is greater than or equal to 3, and each group of winding layers includes a plurality of the winding layers.

[0030] The technical solution of the present invention also provides a circuit system, including the module power supply.

[0031] The technical solution of the present invention also provides an electronic device, comprising the circuit system.

[0032] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0033] The modular power supply provided by the technical solution of the present invention sets a current input structure on the horizontal side of the planar transformer structure so that a plurality of first alternating currents are input into the corresponding winding layers in the horizontal direction. The current output structure is also set on the horizontal side of the planar transformer structure so that the current output structure can complete the rectification of the second alternating current in each winding layer in the horizontal direction, that is, each first alternating current and each second alternating current only flow in their respective winding layers to achieve the DC conversion of the modular power supply, thereby ensuring that the current flow path in each winding layer is the same. Since the current flow path in each winding layer is the same, compared with the modular power supply of the prior art, the impedance of the planar transformer structure of the present invention can be reduced proportionally with the increase in the number of parallel winding layers, thereby effectively optimizing the loss of the modular power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a cross-sectional structural schematic diagram of an embodiment of a module power supply;

[0035] Figure 2 yes Figure 1 A 3D schematic diagram of the current path of the secondary winding in the module power supply embodiment shown;

[0036] Figure 3 is a current density distribution diagram of the secondary windings of different winding layers in an embodiment of a modular power supply;

[0037] Figure 4 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0038] Figure 5 is a current path diagram of a first alternating current in a corresponding winding layer in a module power supply provided by an embodiment of the present invention;

[0039] Figure 6 is a current density distribution diagram of secondary windings of different winding layers in a module power supply provided by an embodiment of the present invention;

[0040] Figure 7 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 2

[0041] Figure 8 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] As described in the background art, the prior art has limitations in optimizing the overall impedance of the transformer, which results in limited loss optimization of the module power supply.

[0044] The following takes an embodiment of a module power supply as an example and describes in detail the reasons why the technical personnel of the present invention found the problems existing in the existing module power supply in combination with the accompanying drawings:

[0045] in, Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of a module power supply.

[0046] Please refer to Figure 1 , Figure 1 The module power supply shown includes: a switch device 100 and a synchronous rectifier device 200 arranged at both the top and bottom layers of the power supply, a plurality of transformer winding layers 300 arranged in the middle of the power supply, and a magnetic core structure 400 arranged in the plurality of transformer winding layers 300. The working process of the module power supply is as follows:

[0047] The direct current enters the primary current path vertically from the switch devices 100 arranged at the top and bottom layers of the power supply, and is converted into a corresponding alternating current. The primary current path is composed of the current through holes of the primary winding in each transformer winding layer 300. The alternating current will be transmitted to the primary winding of each transformer winding layer 300 through the primary current path. The alternating current in the primary winding is transmitted to the corresponding secondary winding through the magnetic core structure 400, and is transmitted to the synchronous rectifier device 200 at the top layer of the power supply and the synchronous rectifier device 200 at the bottom layer of the power supply through the secondary current path. The secondary current path is composed of the current through holes of the secondary winding in each transformer winding layer 300. The alternating current passing through the synchronous rectifier device 200 is converted into a corresponding direct current and output, and returns to the corresponding secondary winding through the secondary current path to form a current loop. The current path in the secondary winding is specifically as follows: Figure 2 As shown. Among them, Figure 2 yes Figure 1 A 3D schematic diagram of the current path of the secondary winding in the module power supply embodiment is shown.

[0048] Taking a 48V module power supply as an example, if the output power of the module power supply is 800W, the output current of the module power supply will be as high as about 120A. Because of the proximity effect and skin effect of high-frequency current, the module power supply will produce significant losses. Among the total losses of the module power supply, the loss of the transformer generally accounts for more than half, so the loss optimization design of the transformer is a key technology to improve the performance of the power supply.

[0049] A common method for optimizing transformer losses is to optimize the overall impedance of the transformer winding layer 300. Figure 1 The embodiment shown generally increases the number of transformer winding layers 300 connected in parallel, that is, more transformer winding layers 300 are connected in parallel to reduce the overall impedance of the transformer winding layers 300, thereby reducing the loss of the transformer. However, the problem with this solution is that:

[0050] Please refer to Figure 2 As the number of transformer winding layers 300 connected in parallel increases, the distance between the transformer winding layer 300 located in the middle area and the top and bottom layers will increase accordingly, thereby increasing the primary current input distance and the secondary current rectification distance of the transformer winding layer 300 in the middle area, thereby causing the AC impedance of the transformer winding layer 300 in the middle area to become larger and larger. Therefore, in the process of increasing the number of transformer winding layers 300 connected in parallel, the rate of decrease of the overall impedance of the transformer winding layer 300 is not an approximately proportional trend, but is becoming slower and slower, thereby limiting the loss optimization of the transformer, and further limiting the loss optimization of the module power supply.

[0051] In addition to the qualitative analysis of AC impedance, the inventors also conducted actual current density simulations. The specific simulation results are as follows:

[0052] in, Figure 3 1 is a current density distribution diagram of the secondary windings of different winding layers in an embodiment of a module power supply.

[0053] Please refer to Figure 3 , Figure 3 The color table on the left is used to indicate the intensity of current density, and the intensity of current density increases from the bottom blue to the top red. Figure 3 The color distribution of different winding layers on the right side shows that the current density in the first secondary winding layer at the top layer and the sixth secondary winding layer at the bottom layer is the largest, but as the number of layers of the secondary winding approaches the middle area, the current density in the secondary winding is also decreasing. Among them, the current density in the third secondary winding layer and the fourth secondary winding layer is the smallest. Therefore, as the number of layers of the transformer winding layer 300 increases, the current density of the secondary winding closer to the middle area is smaller, that is, the contribution to improving the overall output power of the module power supply is also smaller.

[0054] It should be noted that the loss optimization problem existing in the above-mentioned module power supply embodiment was discovered by the inventor of this application after a lot of research and experiments. The discovery of this problem is the prerequisite for the successful research of the present application scheme; therefore, the discovery of this problem itself is an innovation in this field, which is inseparable from the technical solution of this application. As a whole, it is a major technological breakthrough in this field, with significant creativity and value.

[0055] In view of this, an embodiment of the present invention provides a new modular power supply for converting a first DC current into a second DC current, so that the overall impedance of the planar transformer structure decreases proportionally with an increase in the number of parallel winding layers.

[0056] in, Figure 4 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 1 .

[0057] Please refer to Figure 4 , the module power supply provided by the embodiment of the present invention includes:

[0058] Magnetic core structure 10;

[0059] A planar transformer structure 20, the planar transformer structure 20 surrounds the magnetic core structure 10 and is penetrated by the magnetic core structure 10, the planar transformer structure 20 comprises: a plurality of winding layers 21, the plurality of winding layers 21 are stacked in sequence along a vertical direction and connected in parallel, each winding layer 21 is used to transform an input first alternating current I4 into a corresponding second alternating current I5 according to the magnetic core structure 10;

[0060] Specifically: each of the winding layers 21 includes a primary winding 211 and a secondary winding 212; the primary winding 211 is used to receive the first alternating current I4; the secondary winding 212 is sandwiched in the primary winding 211 according to a sandwich winding method, and the secondary winding 212 is used to receive the second alternating current I5 according to the alternating magnetic field generated by the magnetic core structure 10.

[0061] A current input structure 30, wherein the current input structure 30 is attached to the first side of the planar transformer structure 20, and the current input structure 30 is used to divide the first direct current I1 input from the outside into a plurality of third direct currents I3, and convert each third direct current I3 into a corresponding first alternating current I4, and input each first alternating current I4 into the corresponding winding layer 21 along the horizontal direction;

[0062] a current output structure 40, the current output structure 40 being attached to the second side of the planar transformer structure 20, the current output structure 40 being used to rectify the second alternating current I5 in each winding layer 21 and output a fourth direct current I6, and to combine each of the fourth direct currents I6 to output the second direct current I2;

[0063] The first side and the second side of the planar transformer structure 20 are opposite to each other along a horizontal direction.

[0064] Please refer to Figure 4 In the embodiment of the present invention, the current input structure 30 is arranged on the horizontal side of the planar transformer structure 20, so that the first alternating currents I4 are all input to the primary windings 211 in the corresponding winding layer 21 along the horizontal direction. In the embodiment of the present invention, the current output structure 40 is also arranged on the other horizontal side of the planar transformer structure 20, so that the second alternating currents I5 in the secondary windings 212 are all rectified on the horizontal plane where the corresponding secondary windings 212 are located.

[0065] in, Figure 5 It is a current path diagram of a first alternating current in a corresponding winding layer in a module power supply provided by an embodiment of the present invention.

[0066] Please refer to Figure 5 ,Depend on Figure 5It can be seen that the current path of the first alternating current I4 is specifically: horizontal input from the current input structure 30 to the corresponding winding layer 21 - flowing through the winding in the corresponding winding layer 21 - flowing through the current input structure 30 at the same horizontal position and then returning to the corresponding winding layer 21. Therefore, the current path of the first alternating current I4 only includes the corresponding primary winding 211 and the current input structure 30 at the same horizontal plane. Because the winding lengths of different primary windings 211 are approximately the same, and the paths of the current flowing through the current input structure 30 at different horizontal planes are also approximately the same, the current paths of the first alternating current I4 corresponding to different winding layers 21 are approximately the same. Since the current path of each second alternating current I5 only includes the corresponding secondary winding 212 and the current output structure 40 at the same horizontal plane, the current paths of the second alternating current I5 corresponding to different winding layers 21 are also approximately the same.

[0067] Since the circuit path of the first AC current I4 in each winding layer 21 is approximately the same, and the circuit path of the second AC current I5 in each winding layer 21 is also approximately the same, the AC impedance of each winding layer 21 is also approximately the same, and does not increase with the increase in the number of winding layers 21 in parallel, so that the overall impedance of the planar transformer structure 20 in the embodiment of the present invention will decrease proportionally with the increase in the number of winding layers 21 in parallel, thereby achieving more effective loss optimization of the planar transformer structure 20, and then more effective loss optimization of the module power supply. Therefore, under the premise of the same loss optimization, compared with the prior art, the embodiment of the present invention provides a module power supply with a smaller volume, thereby meeting the requirements of high power, high power density, and high efficiency of the module power supply.

[0068] In order to further illustrate that the AC impedance of each winding layer 21 is approximately the same, a current density distribution diagram of the secondary windings of different winding layers in the module power supply provided by an embodiment of the present invention is provided below.

[0069] in, Figure 6 It is a current density distribution diagram of the secondary windings of different winding layers in the module power supply provided by an embodiment of the present invention.

[0070] Similar to Figure 3 , Figure 6 The color table on the left is used to indicate the intensity of current density, and the intensity of current density increases from the bottom blue to the top red. Figure 3 It can be seen from the color distribution of different winding layers on the right that the current density of different winding layers is maintained in the range of 15%-17%, thereby achieving the balance of current density in different winding layers, and then achieving approximately the same AC impedance of different winding layers.

[0071] The loss optimization of the module power supply of this embodiment has an advantage when the number of parallel winding layers 21 is continuously increased. The module power supply of this embodiment also has an optimization effect on the loss of a single winding layer 21 .

[0072] Specific reference Figure 2 and Figure 5 It can be seen that in the prior art, the AC current in the secondary winding 212 has three current paths with opposite current directions, specifically including: the path of the input secondary current path and the output secondary current path, the upward and downward paths, and the path of the input rectifier device and the output rectifier device, which will aggravate the proximity effect of the current, thereby increasing the AC impedance of the winding layer 21. In the present application, compared with the prior art, the first AC current I4 has much fewer current paths with opposite current directions, which reduces the proximity effect of the current in a single winding layer 21, thereby further optimizing the overall impedance of the planar transformer structure 20, and further optimizing the loss of the module power supply.

[0073] It should be noted that the specific configuration of the magnetic core structure 10 may refer to the magnetic core configuration of an existing module power supply, and will not be elaborated herein.

[0074] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0075] As a specific implementation, the number of parallel layers of the winding layer 21 can be set to more than 20, and from the above description, it can be seen that compared with the prior art, the advantage of the module power supply provided by the embodiment of the present invention in loss optimization will continue to increase with the increase in the number of parallel winding layers 21. Of course, the number of parallel winding layers 21 can be set according to the actual power output requirements, and is not limited here.

[0076] in, Figure 7 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 2 .

[0077] Please refer to Figure 7 As a specific implementation, the current input structure 30 includes:

[0078] a plurality of primary switch substructures 32, wherein the plurality of primary switch substructures 32 are all attached to the first side of the planar transformer structure 20, the plurality of primary switch substructures 32 are arranged at intervals on the first side of the planar transformer structure 20 and connected in parallel, and each of the primary switch substructures 32 is used to convert the input third direct current I3 into the corresponding first alternating current I4 and output it to the corresponding winding layer in the planar transformer structure 20;

[0079] A patterned current input structure is disposed on the first side of the planar transformer structure 20 , and the patterned current input structure is used to transmit the first alternating current I4 to a corresponding winding layer in the planar transformer structure 20 .

[0080] The primary switch substructure 32 is specifically a full-bridge switch circuit, which is used to convert the input third DC current I3 into the corresponding first AC current I4. Since the full-bridge switch circuit is a conventional technical means in this field, its specific circuit structure and working principle are not described in detail. The switch tube in the full-bridge switch circuit can be any one of a silicon-based MOS tube, a gallium nitride tube and a silicon carbide tube. Of course, in addition to the full-bridge switch circuit, the primary switch substructure 32 can also select other circuits with switch rectification function, which are not limited here.

[0081] Since the thickness of a single primary switch substructure 32 is greater than the thickness of a single winding layer 21 , the number of the primary switch substructures 32 should be less than the number of the winding layers 21 , which is not limited here.

[0082] The current input structure 40 includes:

[0083] a plurality of secondary switch substructures 42, wherein the plurality of secondary switch substructures 42 are all attached to the second side of the planar transformer structure 20, the plurality of secondary switch substructures 42 are arranged at intervals on the second side of the planar transformer structure 20 and connected in parallel, and each of the secondary switch substructures 42 is used to rectify the corresponding second alternating current I5 and output the fourth direct current I6;

[0084] A patterned current output structure is disposed on the second side of the planar transformer structure 20 , and the patterned current output structure is used to transmit the second alternating current I5 to the corresponding secondary-side switch substructure 42 .

[0085] Among them, the secondary side switch substructure 42 is specifically a bridge rectifier circuit, which is used to convert the input second alternating current I5 into the corresponding fourth direct current I6. Since the bridge rectifier circuit is a conventional technical means in this field, its specific circuit structure and working principle are not repeated. Among them, the switch tube in the bridge rectifier circuit can be selected from any one of a silicon-based MOS tube, a gallium nitride tube and a silicon carbide tube. Of course, in addition to the bridge rectifier circuit, the secondary side switch substructure 42 can also select other circuits with switch rectification function, which is not limited here.

[0086] Since the thickness of a single secondary switch substructure 42 is also greater than the thickness of a single winding layer 21 , the number of the secondary switch substructures 42 is also less than the number of the winding layers 21 , which is not limited here.

[0087] Wherein, the patterned current input structure and the patterned current output structure are both copper-plated structures or half-hole structures arranged on the side of the planar transformer structure.

[0088] Apart from Figure 7 In addition to the structure shown, the current input structure 30 and the current output structure 40 may also include other embodiments, the specific structure is as follows:

[0089] in, Figure 8 The simplified cross-sectional structure of the module power supply provided by the embodiment of the present invention is shown in FIG. Figure 3 .

[0090] Please refer to Figure 8 As a specific implementation, the current input structure 30 further includes:

[0091] A first device board structure 31, wherein the first surface of the first device board structure 31 is attached to the first side of the planar transformer structure 20, and a plurality of first current through holes 311 arranged at intervals are provided in the first device board structure, and each of the first current through holes 311 is used to transmit the corresponding first alternating current I4 to the corresponding winding layer 21.

[0092] The first device board structure 31 is specifically a device board. The first surface of the device board is welded to the first side of the planar transformer structure 20. The device board is provided with a plurality of first current through holes 311, and the plurality of first current through holes 311 respectively correspond to a plurality of first alternating currents I4, and each of the first current through holes 311 is arranged at a vertical position in the device board according to a current path pre-designed corresponding to the first alternating current I4.

[0093] A plurality of primary switch substructures 32, each of which is attached to the second surface of the first device board structure 31, wherein the first surface and the second surface of the first device board structure 31 are opposite to each other in a horizontal direction. The plurality of primary switch substructures 32 are arranged at intervals on the second surface of the first device board structure 31 and connected in parallel, and each of the primary switch substructures 32 is used to convert the input third direct current I3 into the corresponding first alternating current I4 and output it to the first device board structure 31.

[0094] The current output structure 40 further includes:

[0095] A second device board structure 41, wherein the first surface of the first device board structure 31 is attached to the second side of the planar transformer structure 20, and a plurality of second current through holes 411 arranged at intervals are provided in the second device board structure, and each of the second current through holes 411 is used to output the second alternating current I5 of the corresponding winding layer 21.

[0096] The second device board structure 41 is also specifically a device board. The first surface of the device board is welded to the second side of the planar transformer structure 20. A plurality of second current through holes 411 are arranged in the device board, and the plurality of second current through holes 411 correspond to a plurality of second alternating currents 15 respectively. Each of the second current through holes 411 is arranged at a vertical position in the device board according to a pre-designed current path corresponding to the second alternating current 15.

[0097] A plurality of secondary switch substructures 42, wherein the plurality of secondary switch substructures 42 are all attached to the second surface of the second device board structure 41, wherein the first surface and the second surface of the second device board structure 41 are opposite to each other in the horizontal direction. The plurality of secondary switch substructures 42 are arranged at intervals on the second surface of the second device board structure 41 and connected in parallel, and each of the secondary switch substructures 42 is used to rectify the corresponding second alternating current I5 and output the fourth direct current I6. Since the plurality of secondary switch substructures 42 are connected in parallel, the fourth direct current I6 output by each of the secondary switch substructures 42 will be combined into the second direct current I2 to complete the current conversion function of the module power supply.

[0098] In summary, the modular power supply provided by the embodiment of the present invention sets the current input structure on the horizontal side of the planar transformer structure so that a plurality of first alternating currents are input to the primary windings in the corresponding winding layer in the horizontal direction; and sets the current output structure on the other horizontal side of the planar transformer structure so that the second alternating currents in a plurality of secondary windings are rectified in the horizontal plane where the corresponding secondary windings are located. Therefore, the AC impedance of each winding layer is approximately the same and does not increase with the increase in the number of winding layers in parallel, so that the overall impedance of the planar transformer structure in the embodiment of the present invention will decrease proportionally with the increase in the number of winding layers in parallel, thereby achieving more effective loss optimization of the planar transformer structure, and then more effective loss optimization of the modular power supply. Therefore, under the premise of the same loss optimization, compared with the prior art, the modular power supply provided by the embodiment of the present invention has a smaller volume, thereby meeting the requirements of high power, high power density and high efficiency of the modular power supply.

[0099] At the same time, since the module power supply provided by the embodiment of the present invention changes the current path of a single AC current from the original need to pass through a vertical current through hole to only need to flow horizontally, the proximity effect of the AC current in a single winding layer is optimized, thereby further optimizing the overall impedance of the planar transformer structure, that is, further optimizing the loss of the module power supply.

[0100] An embodiment of the present invention further provides a circuit system, comprising the module power supply provided by the embodiment of the present invention.

[0101] An embodiment of the present invention further provides an electronic device, comprising the circuit system provided by the embodiment of the present invention.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A module power supply, characterized in that: For converting a first direct current into a second direct current, the module power supply comprises: Core structure; A planar transformer structure, the planar transformer structure surrounds the magnetic core structure and is penetrated by the magnetic core structure, the planar transformer structure comprises: a plurality of winding layers, the plurality of winding layers are stacked in sequence along a vertical direction and connected in parallel, each winding layer is used to convert an input first alternating current into a corresponding second alternating current according to the magnetic core structure; A current input structure, the current input structure being attached to the first side of the planar transformer structure, the current input structure being used to divide an externally input first direct current into a plurality of third direct currents, convert each third direct current into a corresponding first alternating current, and input each first alternating current into the corresponding winding layer along a horizontal direction; a current output structure, the current output structure being attached to the second side of the planar transformer structure, the current output structure being used to rectify the second alternating current in each winding layer and output a fourth direct current, and to combine each of the fourth direct currents to output the second direct current; The first side and the second side of the planar transformer structure are opposite to each other in a horizontal direction.

2. The modular power supply according to claim 1, characterized in that: The current input structure comprises: a plurality of primary switch substructures, wherein the plurality of primary switch substructures are all attached to the first side of the planar transformer structure, the plurality of primary switch substructures are arranged at intervals and connected in parallel on the first side of the planar transformer structure, and each of the primary switch substructures is used to convert the input third direct current into the corresponding first alternating current and output it to the corresponding winding layer in the planar transformer structure; A patterned current input structure is disposed on the first side of the planar transformer structure, and the patterned current input structure is used to transmit the first alternating current to a corresponding winding layer in the planar transformer structure.

3. The modular power supply according to claim 2, wherein the current output structure comprises: a plurality of secondary switch substructures, wherein the plurality of secondary switch substructures are all attached to the second side of the planar transformer structure, the plurality of secondary switch substructures are arranged at intervals and connected in parallel on the second side of the planar transformer structure, and each of the secondary switch substructures is used to rectify the corresponding second alternating current and output the fourth direct current; A patterned current output structure is disposed on the second side of the planar transformer structure, and the patterned current output structure is used to transmit the second alternating current to the corresponding secondary side switch substructure.

4. The modular power supply according to claim 1, characterized in that: The current input structure comprises: a first device board structure, wherein a first surface of the first device board structure is attached to a first side of the planar transformer structure, and a plurality of first current through holes arranged at intervals are provided in the first device board structure, and each of the first current through holes is used to transmit the corresponding first alternating current to the corresponding winding layer; a plurality of primary switch substructures, wherein the plurality of primary switch substructures are all attached to the second surface of the first device board structure, the plurality of primary switch substructures are arranged at intervals on the second surface of the first device board structure and connected in parallel, and each of the primary switch substructures is used to convert the input third direct current into the corresponding first alternating current and output it to the first device board structure; The first surface and the second surface of the first device board structure are opposite to each other in a horizontal direction.

5. The modular power supply according to claim 4, characterized in that: The current output structure comprises: a second device board structure, wherein a first surface of the first device board structure is attached to a second side of the planar transformer structure, and a plurality of second current through holes arranged at intervals are provided in the second device board structure, and each of the second current through holes is used to output a second alternating current of a corresponding winding layer; a plurality of secondary switch substructures, wherein the plurality of secondary switch substructures are all attached to the second surface of the second device board structure, the plurality of secondary switch substructures are arranged at intervals on the second surface of the second device board structure and connected in parallel, and each of the secondary switch substructures is used to rectify the corresponding second alternating current and output the fourth direct current; The first surface and the second surface of the second device board structure are opposite to each other in a horizontal direction.

6. The modular power supply according to claim 2 or 4, characterized in that: The primary switch substructure includes a full-bridge switch circuit.

7. The modular power supply according to claim 3 or 5, characterized in that: The secondary side switch substructure includes a bridge rectifier circuit.

8. The modular power supply according to any one of claims 1 to 5, characterized in that: Each of the winding layers includes a primary winding and a secondary winding; the primary winding is used to receive the first alternating current; the secondary winding is clamped in the primary winding, and the secondary winding is used to receive the second alternating current according to the alternating magnetic field generated by the magnetic core structure.

9. The modular power supply according to any one of claims 1 to 5, characterized in that: The number of groups of the winding layers is greater than or equal to 3, and each group of winding layers includes a plurality of the winding layers.

10. A circuit system, characterized in that: A module power supply comprising any one of claims 1 to 9.

11. An electronic device, characterized in that: A circuit system comprising the circuit system of claim 10.

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