CN215871998U - Power conversion circuit board - Google Patents
Power conversion circuit board Download PDFInfo
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- CN215871998U CN215871998U CN202120657464.5U CN202120657464U CN215871998U CN 215871998 U CN215871998 U CN 215871998U CN 202120657464 U CN202120657464 U CN 202120657464U CN 215871998 U CN215871998 U CN 215871998U
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Abstract
The application provides a power conversion circuit board, includes: at least one layer of independent device board and at least one layer of main power board; the layers are vertically laminated or distributed in a staggered manner and are electrically connected through a connecting element with loading capacity; that is, the layout scheme of the prior art that all the circuit boards are tiled on a horizontal plane is adjusted to be a layout scheme of multilayer stacking, and then the total layout area of the circuit boards is reduced, and simultaneously the power loop area of the circuit boards can be reduced, so that the loss of the power converter is reduced, the anti-electromagnetic interference capability of the power converter is improved, the generation of parasitic inductance is reduced, and the oscillation amplitude is reduced.
Description
Technical Field
The utility model relates to the field of integrated circuits, in particular to a power conversion circuit board.
Background
PCB (Printed Circuit Board) is an important electronic component, and is also a support for electronic components, and a carrier for electrical connection of electronic components.
At present, the PCB is continuously developed towards high precision, high density and high reliability, and the PCB is continuously reduced in size, cost and performance, so that the PCB maintains strong vitality in the development engineering of future electronic devices.
However, as shown in fig. 11, in the conventional PCB layout scheme for the power converter, the power circuit boards of the power converter are generally laid out on a horizontal plane; that is, in the conventional layout manner, required components such as a power device, a magnetic device, a control device, and an input/output terminal are all tiled on a horizontal plane, which not only requires a large layout area, but also increases the power loop area of the whole power converter, resulting in an increase in loss of the power converter.
SUMMERY OF THE UTILITY MODEL
Based on the defects of the prior art, the utility model provides a power conversion circuit board to solve the problems of overlarge layout area and increased loss caused by the increase of the area of a power loop circuit due to the PCB layout scheme that required components such as a power device, a magnetic device, a control device, an input/output terminal and the like are all tiled on a horizontal plane in the conventional power converter.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the application discloses power conversion circuit board includes: at least one layer of independent device board and at least one layer of main power board;
the layers are stacked up and down or distributed in staggered layers, and are electrically connected through a connecting element with loading capacity.
Optionally, in the above power conversion circuit board, when the independent device board has only one layer, the independent device board is provided with: at least one module in a power converter;
when the independent device boards are in multiple layers, each independent device board is provided with one power converter, and the power converters are connected in parallel.
Optionally, in the above power conversion circuit board, the power converter includes: an ACDC converter, and/or a DCAC converter.
Optionally, in the power conversion circuit board, the ACDC converter includes: inductance combination module and rectifier module and switch combination module that link to each other with it.
Optionally, in the above power conversion circuit board, the DCAC converter includes: switch composite module, inductance-capacitance composite module and transformer composite module of interconnect.
Optionally, in the above power conversion circuit board, when the power converter includes only the ACDC converter, the module disposed on the main power board includes:
the energy storage filtering module is arranged on the direct current side of the ACDC converter;
the soft start circuit is arranged on the alternating current side of the ACDC converter; and the number of the first and second groups,
and the other side of the soft start circuit is connected with an EMC circuit.
Optionally, in the above power conversion circuit board, when the power converter includes only the DCAC converter, the module disposed on the main power board includes:
the energy storage filtering module is arranged on the direct current side of the DCAC converter;
the rectification module is arranged on the alternating current side of the DCAC converter; and the number of the first and second groups,
and the other side of the rectifying module is sequentially connected with the filter circuit and the specific function module.
Optionally, in the above power conversion circuit board, when the power converter includes both the ACDC converter and the DCAC converter, the module disposed on the main power board includes:
the energy storage filtering modules are arranged on the direct current side of the ACDC converter and the direct current side of the DCAC converter;
the soft start circuit is arranged on the alternating current side of the ACDC converter;
the EMC circuit is connected to the other side of the soft start circuit;
the rectification module is arranged on the alternating current side of the DCAC converter; and the number of the first and second groups,
and the other side of the rectifying module is sequentially connected with the filter circuit and the specific function module.
Optionally, when the power converter includes the DCAC converter, the module disposed on the main power board further includes:
an EMC circuit connected between the filter circuit and the specific functional module.
Optionally, in the power conversion circuit board, the specific function module is an output anti-reverse module.
Optionally, in the above power conversion circuit board, the module disposed on the main power board further includes: the input terminal and the output terminal of the external device are connected.
Optionally, in the power conversion circuit board, when the main power board has only one layer, each corresponding module is disposed on the main power board;
when the main power board has multiple layers, each corresponding module is respectively arranged on the corresponding main power board.
Optionally, in the above power conversion circuit board, when the independent device board has only one layer, the devices disposed on the independent device board are: a magnetic device;
all other devices except the magnetic device are arranged on the main power board.
Optionally, in the above power conversion circuit board, the magnetic device includes: an inductor in the power converter and a main transformer.
Optionally, in the power conversion circuit board described above, the connection element is: at least any one of copper column, copper bar, wire rod, butt joint terminal and PCB.
Based on above-mentioned power conversion circuit board that this application embodiment provided includes: at least one layer of independent device board and at least one layer of main power board; the layers are vertically laminated or distributed in a staggered manner and are electrically connected through a connecting element with loading capacity; that is, the layout scheme of the prior art that all the circuit boards are tiled on a horizontal plane is adjusted to be a layout scheme of multilayer stacking, and then the total layout area of the circuit boards is reduced, and simultaneously the power loop area of the circuit boards can be reduced, so that the loss of the power converter is reduced, the anti-electromagnetic interference capability of the power converter is improved, the generation of parasitic inductance is reduced, and the oscillation amplitude is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power conversion circuit board according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a DCAC converter according to an embodiment of the present application;
fig. 3 is a schematic diagram of a module layout of a main power board according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a topology of a power converter according to an embodiment of the present application;
FIG. 5 is a schematic diagram of another power converter topology provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of an ACDC converter according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a module layout of another main power board according to an embodiment of the present application;
fig. 8 is a schematic block layout diagram of another main power board according to an embodiment of the present disclosure;
FIG. 9 is a schematic layout diagram of a standalone device board according to an embodiment of the present application;
fig. 10 is a schematic layout diagram of all devices except the magnetic device on the main power board according to the embodiment of the present application;
fig. 11 is a schematic diagram of a PCB layout of a power converter in the prior art.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a power conversion circuit board to solve the problem that the layout area is too big and the loss increases because of the increase of power loop area that present power converter all tiles the PCB layout scheme on a horizontal plane with components and parts such as required power device, magnetic device, controlling means, input/output terminal, brought.
Referring to fig. 1, the power conversion circuit board mainly includes: at least one layer of individual device boards 101 and at least one layer of main power boards 102. In fig. 1, only one independent device board 101 and one main power board 102 are taken as an example, but in practical application, multiple layers of independent device boards 101 and multiple layers of main power boards 102 may be set according to specific application environments and user requirements, and no matter how many layers are set, the principle is the same, and the description is omitted.
The layers are stacked up and down or distributed in staggered layers, and are electrically connected through a connecting element with loading capacity.
In practical applications, in each layer of the upper and lower stacked distribution, the independent device board 101 may be disposed below the main power board 102, that is, in the layout manner shown in fig. 1, or the main power board 102 may be disposed above the independent device board 101, and the present application does not specifically limit the hierarchical distribution manner of each independent device board 101 and main power board 102, and both of them belong to the protection scope of the present application.
In each layer adopting the staggered distribution, the independent device board 101 and the main power board 102 may be respectively disposed on different planes according to the specific application environment and the user requirements. Taking a horizontal plane as an example, for example, the independent device board 101 is disposed on a relatively lower horizontal plane, and the main power board 102 is disposed on a relatively upper horizontal plane; or, the main power board 102 is disposed on a relatively lower horizontal plane, and the independent device board 101 is disposed on a relatively upper horizontal plane, etc., and the present application does not limit the specific manner of staggered distribution, and all of them belong to the protection scope of the present application.
It should be noted that the connecting element with loading capability may be: any one or more of copper columns, copper bars, wires, butt terminals and PCBs, but the utility model is not limited thereto, and may also be other existing connecting elements with load carrying capability. The specific selection condition of the connecting element with the loading capacity can be determined according to the specific application environment and the user requirement, and the application is not limited and belongs to the protection scope of the application.
Based on the above, the power conversion circuit board provided in the embodiment of the present application adjusts the layout scheme that is all tiled on a horizontal plane in the prior art to the layout scheme that is stacked in multiple layers, and then, reduces the total layout area of the circuit board, and can also reduce the power loop area, thereby reducing the loss of the power converter, improving the anti-electromagnetic interference capability of the power converter, reducing the generation of parasitic inductance, and reducing the oscillation amplitude.
In practical applications, the circuit disposed on the power conversion circuit board is mainly used for realizing power conversion, and therefore, the main device thereof is a power converter, such as at least one of an ACDC converter and a DCAC converter. When the required power level of the power conversion circuit board is not high, namely is lower than a certain threshold value, the independent device board can only have one layer, and the independent device board is provided with: at least one module in the power converter; that is, any one of the modules in the power converter may be isolated, or the power converter may be isolated as a whole. When the required power level of the power conversion circuit board is higher, namely higher than a certain threshold value, the power conversion circuit board can be set to be provided with a plurality of layers of independent device boards, each independent device board is provided with one power converter, and the power converters are connected in parallel.
It should be noted that, the power converter in practical application may include: the ACDC converter or the DCAC converter or the ACDC converter and the DCAC converter which are connected in series; that is, according to different types of the power converter, the following three cases can be specifically classified:
(1) the power converter includes only a DCAC converter.
As shown in fig. 2, the DCAC converter includes: switch combination module 201, inductance-capacitance combination module 202 and transformer combination module 203 that interconnect.
Taking fig. 2 as an example, when the independent device board is only one layer, the modules disposed on the independent device board may be: at least one of switch composite module 201, inductance-capacitance module 202 and transformer composite module 203, concrete setting condition is according to specific application environment and user's demand confirm can, all belong to the protection scope of this application.
In practical applications, when the power converter includes only a DCAC converter, the module disposed on the main power board, as shown in fig. 3, includes: the energy storage filtering module 401 is arranged on the direct current side of the DCAC converter; a rectification module 402 disposed on the ac side of the DCAC converter; and a filter circuit 403, an EMC (Electro MagneTIc CompaTIbility) circuit 404, and a specific function module 405, which are connected to the other side of the rectifying module 402 in sequence.
Accordingly, the various modules in FIG. 3, the expanded topology may be as shown in FIG. 4. Wherein the specific function module 405 may be an output anti-reverse module, i.e. the output anti-reverse 25, 26 shown in fig. 4. The energy storage filter module 401 can be the bus capacitor 1 in FIG. 4, the rectifier module 402 can be the output rectifier tubes 11, 14 shown in FIG. 4, the filter circuit 403 can be the filter capacitors 18-21 shown in FIG. 4, and the EMC circuit 403 can be the EMC circuits 22-24 shown in FIG. 4. In practical applications, when the power converter only includes the DCAC converter, the module disposed on the main power board in the power conversion circuit board may also omit the EMC circuit 403, and the topology structure thereof is shown in fig. 5, which is not described herein again.
(2) The power converter includes only an ACDC converter.
As shown in fig. 6, the ACDC converter includes: the inductor combination module 301 and its associated rectifier module 302 and switch combination module 303.
Similarly, taking fig. 6 as an example, when the independent device board is only one layer, the modules disposed on the independent device board may be: at least one of inductance combination module 301, rectifier module 302 and switch combination module 303, specific setting condition is according to specific application environment and user's demand confirm can, all belong to the protection scope of this application.
The topology of the power converter is as follows from the prior art, and is not described herein.
In practical applications, when the power converter includes only the ACDC converter, as shown in fig. 7, the modules disposed on the main power board may include: the energy storage filtering module 503 is arranged on the direct current side of the ACDC converter; a soft start circuit 502 arranged on the AC side of the ACDC converter; and an EMC circuit 501 connected to the other side of the soft start circuit 502.
It should be noted that, for the specific structures of the energy storage filter module 503, the soft start circuit 502, and the EMC circuit 501, reference may also be made to the prior art, and details of this application are not described herein again.
(3) When the power converter includes both the ACDC converter and the DCAC converter, as shown in fig. 8, the modules disposed on the main power board include: the energy storage filtering modules 503 are arranged on the direct current side of the ACDC converter and the direct current side of the DCAC converter; a soft start circuit 502 arranged on the AC side of the ACDC converter; an EMC circuit 501 connected to the other side of the soft start circuit 502; a rectification module 402 disposed on the ac side of the DCAC converter; and a filter circuit 403, an EMC circuit 404 and a specific function module 405 connected in sequence on the other side of the rectifying module 402.
It should be noted that, for the related descriptions of the energy storage filter module 503, the soft start circuit 502, the EMC circuit 501, the rectifier module 402, the filter circuit 403, the EMC circuit 404, and the specific function module 405, reference may be made to the above illustrated embodiments, and details are not described here. Also, the EMC circuit 404 between the filter circuit 403 and the specific function module 405 may be replaced with a capacitance between the output relays 15-17 and the output anti-inversions 25, 26 as shown in FIG. 5.
It should be noted that, in practical applications, when facing a high-power converter, due to the limitation of device development, a plurality of power conversion circuit boards connected in parallel or a plurality of converters are generally required to be used to increase the power level, but with the increase of power devices, a larger area is required for layout, and when a heat dissipation device needs to be provided for the power devices, the layout area of the heat dissipation device is also increased additionally, so that not only the area of the whole power loop is increased, but also the loss of the power loop is further increased. Therefore, when the independent device boards in the present application are arranged in multiple layers, each independent device board is provided with one power converter, and each power converter is connected in parallel, that is, each DCAC converter shown in fig. 3, fig. 7, and fig. 8 is connected in parallel, or each ACDC converter is connected in parallel, so that the power level of the power conversion circuit board is improved, and the problems of loop area increase and loss increase caused by too large layout area of a single layer can be avoided.
Optionally, in practical applications, the module disposed on the main power board further includes: the input terminal and the output terminal of the external device are connected.
In practical applications, if the power converter only includes the ACDC converter, such as the case shown in fig. 7, in this case, the left side of the EMC circuit 501 in fig. 7 is connected to the input-side external device through the input terminal, and the right side of the energy storage filter module 503 is connected to the output-side external device through the output terminal.
However, if the power converter includes only a DCAC converter, such as the case shown in fig. 3, the left side of the energy storage and filtering module 401 (i.e., the bus capacitor 1 shown in fig. 4 or fig. 5) in the DCAC converter is connected to the input side external device through the input terminal; the right side of the specific function module 405 (i.e., the output anti-reverse 25, 26 of fig. 4 or 5) is connected to the output side external device through the output terminal.
In the case where the power converter includes both the ACDC converter and the DCAC converter, as shown in fig. 8, the EMC circuit 501 in fig. 8 has its left side connected to the input-side external device through the input terminal and has its right side connected to the output-side external device through the output terminal.
It should be noted that, in practical applications, on the basis of the power conversion circuit board shown in each of the above embodiments, if the main power board is only one layer, each corresponding module is disposed on the main power board; when the main power board has multiple layers, each corresponding module is respectively arranged on the corresponding main power board. The specific setting conditions of each module can be determined according to specific application environments and user requirements, and the application is not particularly limited and belongs to the protection scope of the application.
In another embodiment of the present application, a specific implementation is provided, in the power conversion circuit board, the independent device board is only one layer, the devices disposed on the independent device board only include magnetic devices, and all other devices except the magnetic devices are disposed on the main power board.
Taking the topology shown in fig. 4 or fig. 5 as an example, in practical applications, as shown in fig. 9, the magnetic device may include: the inductance in the power converter (including the resonant inductance 5 and the resonant inductance 6 shown in fig. 4, 5 and 9) and the main transformer (such as the main transformer 12 and the main transformer 13 in fig. 4, 5 and 9).
In the case where the power converter has the topology shown in fig. 4, all other devices provided on the main power board may be all other devices except the resonant inductor 5, the resonant inductor 6, the main transformer 12, and the main transformer 13 shown in fig. 4 as shown in fig. 10.
In this embodiment, the magnetic devices, i.e., the inductor and the main transformer, in a circuit board (as shown in fig. 11) horizontally arranged in the prior art are separated to form an independent circuit board (as shown in fig. 9) with a smaller occupied area, and meanwhile, due to the removal of the magnetic devices in the original layout, the layout required by the main power circuit board shown in fig. 10 can be reduced to a large area (e.g., 135mm × 410mm), which can be reduced to about 60% of the original area. The two circuit boards are distributed and distributed in a vertically staggered mode, and are electrically connected by using connecting elements with carrying capacity.
In practical application, the independent device board provided with the magnetic device can be arranged on the bottom layer, and the main power board is arranged on the upper layer. If the independent device board at the bottom layer is electrically connected with the main power board through the copper column, the pins of the magnetic devices on the independent device board can be led to the pins, close to the resonant capacitor, on the main power board by the copper column, so that the resonant capacitor on the main power board is close to the DC power tube in the switch combined module as far as possible, and the loop area of the whole main power board is relatively small.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (15)
1. A power conversion circuit board, comprising: at least one layer of independent device board and at least one layer of main power board;
the layers are stacked up and down or distributed in staggered layers, and are electrically connected through a connecting element with loading capacity.
2. The power conversion circuit board according to claim 1, wherein when the individual device board has only one layer, the individual device board is provided with: at least one module in a power converter;
when the independent device boards are in multiple layers, each independent device board is provided with one power converter, and the power converters are connected in parallel.
3. The power conversion circuit board according to claim 2, wherein the power converter comprises: an ACDC converter, and/or a DCAC converter, and/or a DCDC converter.
4. The power conversion circuit board of claim 3, wherein the ACDC converter comprises: inductance combination module and rectifier module and switch combination module that link to each other with it.
5. The power conversion circuit board according to claim 3, wherein the DCAC converter includes: switch composite module, inductance-capacitance composite module and transformer composite module of interconnect.
6. The power conversion circuit board of claim 3, wherein when the power converter comprises only the ACDC converter, the module disposed on the main power board comprises:
the energy storage filtering module is arranged on the direct current side of the ACDC converter;
the soft start circuit is arranged on the alternating current side of the ACDC converter; and the number of the first and second groups,
and the other side of the soft start circuit is connected with an EMC circuit.
7. The power conversion circuit board of claim 3, wherein when the power converter includes only the DCAC converter, the module disposed on the main power board includes:
the energy storage filtering module is arranged on the direct current side of the DCAC converter;
the rectification module is arranged on the alternating current side of the DCAC converter; and the number of the first and second groups,
and the other side of the rectifying module is sequentially connected with the filter circuit and the specific function module.
8. A power conversion circuit board according to claim 3, wherein when the power converter includes both the ACDC converter and the DCAC converter, the module provided on the main power board includes:
the energy storage filtering modules are arranged on the direct current side of the ACDC converter and the direct current side of the DCAC converter;
the soft start circuit is arranged on the alternating current side of the ACDC converter;
the EMC circuit is connected to the other side of the soft start circuit;
the rectification module is arranged on the alternating current side of the DCAC converter; and the number of the first and second groups,
and the other side of the rectifying module is sequentially connected with the filter circuit and the specific function module.
9. The power conversion circuit board according to claim 7 or 8, wherein the module provided on the main power board further comprises:
an EMC circuit connected between the filter circuit and the specific functional module.
10. The power conversion circuit board according to claim 7 or 8, wherein the specific function module is an output anti-reverse module.
11. The power conversion circuit board of any of claims 6-8, wherein the module disposed on the main power board further comprises: the input terminal and the output terminal of the external device are connected.
12. The power conversion circuit board according to any one of claims 6 to 8, wherein when the main power board has only one layer, each corresponding module is disposed on the main power board;
when the main power board has multiple layers, each corresponding module is respectively arranged on the corresponding main power board.
13. The power conversion circuit board according to claim 1, wherein when the individual device board has only one layer, the devices provided on the individual device board are: a magnetic device;
all other devices except the magnetic device are arranged on the main power board.
14. The power conversion circuit board according to claim 13, wherein the magnetic device comprises: an inductor in the power converter and a main transformer.
15. A power conversion circuit board according to any one of claims 1 to 8 and 13 to 14, wherein the connection member is: at least any one of copper column, copper bar, wire rod, butt joint terminal and PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120657464.5U CN215871998U (en) | 2021-03-31 | 2021-03-31 | Power conversion circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120657464.5U CN215871998U (en) | 2021-03-31 | 2021-03-31 | Power conversion circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN215871998U true CN215871998U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120657464.5U Active CN215871998U (en) | 2021-03-31 | 2021-03-31 | Power conversion circuit board |
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| CN (1) | CN215871998U (en) |
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2021
- 2021-03-31 CN CN202120657464.5U patent/CN215871998U/en active Active
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