CN114239473B - Winding drawing method and automatic wiring software system for planar transformer - Google Patents
Winding drawing method and automatic wiring software system for planar transformer Download PDFInfo
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- CN114239473B CN114239473B CN202111483677.1A CN202111483677A CN114239473B CN 114239473 B CN114239473 B CN 114239473B CN 202111483677 A CN202111483677 A CN 202111483677A CN 114239473 B CN114239473 B CN 114239473B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/394—Routing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2115/00—Details relating to the type of the circuit
- G06F2115/12—Printed circuit boards [PCB] or multi-chip modules [MCM]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a winding drawing method and an automatic wiring software system for a planar transformer, wherein the winding drawing method comprises the following steps: selecting the type of a magnetic core of the planar transformer, inputting dimension parameters, inputting winding parameters, calculating single-layer information, drawing and calculating windings and outputting a PCB file, wherein the calculation of the single-layer information comprises the calculation of detailed distribution information of the windings of the planar transformer on all signal layers and shielding layers; the winding drawing calculation comprises the following steps of drawing and calculating coils and buried holes of the planar transformer winding on all signal layers and shielding layers: and establishing a mathematical model and a parameter object of the planar transformer winding, performing multipoint line segment tangent calculation in an absolute coordinate system and relative coordinate system interactive mode, and simultaneously considering input parameter constraint and algorithm boundary conditions to obtain drawing results of the coil and the buried hole. The method can quickly calculate the drawing result of the planar transformer winding and generate the PCB file, and meets the requirement of automatic wiring of the planar transformer winding.
Description
Technical Field
The invention relates to the technical field of planar transformers, in particular to a winding drawing method and an automatic wiring software system for a planar transformer.
Background
The planar transformer is characterized in that a flat continuous copper spiral line is etched on a printed circuit board and stacked on a magnetic core, has the characteristics of low modeling, low loss factor and low leakage inductance, has great advantages in the aspect of improving the characteristics of the switching power supply, and is a core component of the switching power supply.
For the design of the planar transformers of multiple varieties of small-batch high-integration switching power supplies, the planar transformers are generally drawn by designers manually, and the design and development problems of long multilayer stacking development period, poor consistency and much repetitive labor exist all the time. If there is a change or adjustment of the external parameters, it will result in a redesign of the planar transformer, greatly increasing the workload of the designer. Therefore, the automatic wiring of the planar transformer winding is realized, and the method has important significance and value for improving the efficiency and consistency of the design of the planar transformers of multiple varieties of small-batch high-integration switching power supplies.
The conventional planar transformer winding drawing is generally manually completed by designers, no standardized winding drawing logic and algorithm is formed, drawing habits of different designers are different, and uniform drawing rules and constraints are lacked, so that the product consistency is poor, the dependence on manpower is high, and the development efficiency is low.
Most of the existing automatic wiring functions are circuit design and development software functions, but the existing automatic wiring functions are only oriented to electronic components with electrical network attributes. The planar transformer is mainly designed by copper wires and buried holes, the electrical network attributes are the same, electronic components are not available, and the automatic wiring function of circuit design development software cannot achieve automatic wiring of the planar transformer.
In summary, the prior art cannot meet the requirement of automatic wiring of the planar transformer winding.
Disclosure of Invention
The invention provides a winding drawing method and an automatic wiring software system for a planar transformer aiming at the requirement characteristics of the design of the planar transformer of a multi-variety small-batch high-integration switching power supply, which can quickly calculate the winding drawing result of the planar transformer and generate a PCB (printed circuit board) file to realize the requirement of automatic wiring of the planar transformer winding.
The technical scheme adopted by the invention is as follows:
on one hand, the invention provides a winding drawing method facing a planar transformer, which comprises the following steps: selecting the type of a magnetic core of the planar transformer, inputting dimension parameters, inputting winding parameters, calculating single-layer information, drawing and calculating windings and outputting a PCB file, wherein the calculation of the single-layer information comprises the calculation of detailed distribution information of the windings of the planar transformer on all signal layers and shielding layers; the winding drawing calculation comprises the following steps of drawing and calculating coils and buried holes of the planar transformer winding on all signal layers and shielding layers: establishing a mathematical model and a parameter object of the planar transformer winding, performing multipoint line segment tangent calculation in an absolute coordinate system and relative coordinate system interactive mode, and simultaneously considering input parameter constraint and algorithm boundary conditions to obtain drawing results of the coil and the buried hole.
Further, the selection of the type of the planar transformer core comprises: and reading out the required magnetic core model from all the magnetic core models of the planar transformer in the database.
Further, the dimensional parameter input comprises: drawing rules and size constraints of the input planar transformer winding design.
Further, the winding parameter inputs include: and inputting the total number of layers of the planar transformer, the number of turns of the winding, the number of layers of the winding, the starting point position, the rotating direction and the distribution information of the shielding layer.
Further, the PCB file output includes: and outputting the PCB files of the drawing results of the planar transformer winding on all the signal layers and the shielding layers, and storing the PCB files in a PCB ASCII file type.
On the other hand, the invention provides an automatic wiring software system for a planar transformer, which can quickly meet the automatic wiring requirement of the planar transformer of a multi-variety small-batch high-integration switching power supply by matching with the winding drawing method for the planar transformer, and the automatic wiring software system comprises: the device comprises a magnetic core model import and export module, a size parameter input module, a winding parameter input module, a single-layer information calculation module, a single-layer information display module, a winding drawing calculation module and a PCB file output module, wherein the single-layer information calculation module is used for calculating the layer of each signal layer, the number of turns of a winding, the starting position, the rotation direction and the layer of each shielding layer according to the data of the winding parameter input module; and the winding drawing calculation module is used for rapidly obtaining a winding drawing result by adopting an object-oriented loop nesting calculation mode.
Furthermore, the magnetic core model import and export module is used for reading and writing the magnetic core model into the database in real time, so as to update the database.
Further, the size parameter input module is used for forming drawing rules and constraints of the unified planar transformer winding design in a manner of editable default values.
Further, the winding parameters input by the winding parameter input module include total number of layers of the planar transformer, starting position, rotation direction, number of shielding layers, shielding layer distribution and winding information, and the winding information includes winding number, number of turns of winding and number of layers of winding, which are added or deleted in a table form.
Furthermore, the single-layer information display module is used for displaying the single-layer information calculation result in a table mode, and the PCB file output module is used for outputting the winding drawing calculation result file in a specified path according to the PCB ASCII file type.
The invention has the beneficial effects that:
the invention provides a winding drawing method and an automatic wiring software system for a planar transformer aiming at the requirement characteristics of the design of the planar transformer of a multi-variety small-batch high-integration switching power supply, which can quickly calculate the winding drawing result of the planar transformer and generate a PCB file. By establishing a mathematical model and a parameter object of the planar transformer winding, multipoint line segment tangent calculation is carried out in an absolute coordinate system and relative coordinate system interactive mode, input parameter constraint and algorithm boundary conditions are considered, drawing calculation and PCB file output functions of the planar transformer winding are realized, automatic wiring requirements of the planar transformer winding are met, and efficiency and consistency of design of the planar transformer of the multi-variety small-batch high-integration switching power supply are greatly improved.
Drawings
Fig. 1 is a flowchart of a winding drawing method for a planar transformer according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of dimensional parameters of a planar transformer according to an embodiment of the present invention.
Fig. 3 is a parameter diagram of a planar transformer according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of displaying single-layer information of the planar transformer according to the embodiment of the invention.
Fig. 5 is a schematic diagram of a planar transformer PCB ascii file according to an embodiment of the invention.
Fig. 6 is a schematic diagram of the automatic wiring result of the planar transformer winding according to the embodiment of the invention.
Reference numerals are as follows: d 1-distance from coil or buried hole to PCB boundary, d 2-distance from coil to 2 layers of buried hole, d 3-distance from coil to 4 layers of buried hole, and d 4-distance between coils.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a winding drawing method facing a planar transformer, as shown in fig. 1, including the following steps:
selecting the type of the planar transformer magnetic core: and reading out the required magnetic core model from all the magnetic core models of the planar transformer in the database. As shown in fig. 2, the planar transformer core data read are size a, size B, size C, and size D.
Inputting size parameters: drawing rules and size constraints of the input planar transformer winding design. As shown in fig. 2, the size constraint parameters are a size d1, a size d2, a size d3, a size d4, a buried via diameter M, and a buried via aperture S.
Inputting winding parameters: and inputting the total number of layers of the planar transformer, the number of turns of the winding, the number of layers of the winding, the position of a starting point, the rotating direction and the distribution information of the shielding layer. As shown in fig. 3, the starting positions are an X-axis positive half shaft and an X-axis negative half shaft; the rotation directions are clockwise and anticlockwise; the number of shielding layers is 1, 2 and 4; the shielding layer is distributed into a single-end surface layer, a single-end inner layer, a symmetrical surface layer and a symmetrical inner layer.
Single-layer information calculation: and calculating the detailed distribution information of the planar transformer winding in all the signal layers and the shielding layers. As shown in fig. 4, the information of the signal layer is the layer, the number of turns, the starting point position and the rotating direction; the shielding layer information is the layer of the shielding layer.
And (3) winding drawing calculation: and drawing and calculating coils and buried holes of the planar transformer winding in all the signal layers and the shielding layers. Specifically, a mathematical model and a parameter object of the planar transformer winding are established, multipoint line segment tangent calculation is carried out in an absolute coordinate system and relative coordinate system interactive mode, and meanwhile drawing results of the coil and the buried hole are obtained by considering input parameter constraint and algorithm boundary conditions.
And (3) outputting a PCB file: and outputting the PCB files of the drawing results of the planar transformer winding on all the signal layers and the shielding layers, and storing the PCB files in a PCB ASCII file type, as shown in FIG. 5.
The winding drawing method can quickly meet the automatic wiring requirement of the planar transformer of the multi-variety small-batch high-integration switching power supply, and quickly obtain the winding drawing result in an object-oriented loop nesting calculation mode.
Example 2
This example is based on example 1:
the embodiment provides an automatic wiring software system for a planar transformer, which, in cooperation with the winding drawing method for a planar transformer in embodiment 1, can quickly meet the automatic wiring requirements of planar transformers of multiple varieties of small-batch high-integration switching power supplies, and quickly obtain winding drawing results in an object-oriented loop nesting calculation manner, as shown in fig. 6. Specifically, the automatic wiring software system includes:
and the magnetic core model import and export module is used for reading and writing the magnetic core model into the database in real time to update the database. As shown in fig. 2, the planar transformer core data read are size a, size B, size C, and size D.
And the size parameter input module is used for forming drawing rules and size constraints of the unified planar transformer winding design in a default editable mode. As shown in fig. 2, the size constraint parameters are a size d1, a size d2, a size d3, a size d4, a buried via diameter M, and a buried via aperture S.
And the winding parameter input module is used for inputting winding parameters, wherein the winding parameters comprise the total number of layers of the planar transformer, the starting position, the rotating direction, the number of shielding layers, the distribution of the shielding layers and winding information, and the winding information comprises winding numbers, the number of turns of the winding and the number of the layers of the winding, and is added or deleted in a table form. As shown in fig. 3, the starting positions are an X-axis positive half shaft and an X-axis negative half shaft; the rotation directions are clockwise and anticlockwise; the shielding layers are 1, 2 and 4; the shielding layer is distributed into a single-end surface layer, a single-end inner layer, a symmetrical surface layer and a symmetrical inner layer.
And the single-layer information calculation module is used for calculating the layer of each signal layer, the number of turns of the winding, the starting point position, the rotation direction and the layer of each shielding layer according to the data of the winding parameter input module.
And the single-layer information display module is used for displaying the single-layer information calculation result in a table mode.
And the winding drawing calculation module is used for rapidly solving a winding drawing result by adopting an object-oriented loop nesting calculation mode. Specifically, a mathematical model and a parameter object of the planar transformer winding are established, multipoint line segment tangent calculation is carried out in an absolute coordinate system and relative coordinate system interactive mode, and meanwhile drawing results of the coil and the buried hole are obtained by considering input parameter constraint and algorithm boundary conditions.
And the PCB file output module is used for outputting the winding drawing calculation result file by adopting the PCB ASCII file type and storing the winding drawing calculation result file in a specified path, as shown in FIG. 5.
It should be noted that the foregoing method embodiments are described as a series of acts or combinations for simplicity in description, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art will recognize that the embodiments described in this specification are preferred embodiments and that acts or modules referred to are not necessarily required for this application.
Claims (8)
1. A winding drawing method facing a planar transformer is characterized by comprising the following steps: the method comprises the steps of selecting the type of a magnetic core of the planar transformer, inputting dimension parameters, inputting winding parameters, calculating single-layer information, drawing and calculating windings and outputting a PCB (printed circuit board) file, wherein the single-layer information calculation comprises the detailed distribution information of the windings of the planar transformer on all signal layers and shielding layers, the signal layer information comprises the layer where the windings are located, the number of turns, the position of a starting point and the rotating direction, and the shielding layer information comprises the layer where the windings are located; the winding drawing calculation comprises the following steps of drawing and calculating coils and buried holes of the planar transformer winding on all signal layers and shielding layers: establishing a mathematical model and a parameter object of a planar transformer winding, performing multipoint line segment tangent calculation in an absolute coordinate system and relative coordinate system interactive mode, and simultaneously considering input parameter constraint and algorithm boundary conditions to obtain drawing results of a coil and a buried hole; the PCB file output comprises: and outputting the PCB files of the drawing results of the planar transformer winding on all the signal layers and the shielding layers, and storing the PCB files in a PCB ASCII file type.
2. The planar transformer-oriented winding drawing method according to claim 1, wherein the selection of the type of the planar transformer core comprises: and reading out the required magnetic core model from all the magnetic core models of the planar transformer in the database.
3. The planar transformer oriented winding drawing method of claim 1, wherein the dimensional parameter input comprises: drawing rules and size constraints of the input planar transformer winding design.
4. The winding drawing method for the planar transformer according to claim 1, wherein the winding parameter input comprises: and inputting the total number of layers of the planar transformer, the number of turns of the winding, the number of layers of the winding, the starting point position, the rotating direction and the distribution information of the shielding layer.
5. An automatic wiring software system for a planar transformer, comprising: the device comprises a magnetic core model import and export module, a size parameter input module, a winding parameter input module, a single-layer information calculation module, a single-layer information display module, a winding drawing calculation module and a PCB file output module, wherein the single-layer information calculation module is used for calculating the layer of each signal layer, the number of turns of a winding, the starting position, the rotation direction and the layer of each shielding layer according to the data of the winding parameter input module; the single-layer information display module is used for displaying the single-layer information calculation result in a table mode; the winding drawing calculation module is used for rapidly obtaining a winding drawing result by adopting an object-oriented loop nesting calculation mode, carrying out multipoint line segment tangent calculation by establishing a mathematical model and a parameter object of a planar transformer winding in an interactive mode of an absolute coordinate system and a relative coordinate system, and simultaneously considering input parameter constraint and algorithm boundary conditions to obtain the drawing results of the coil and the buried hole; and the PCB file output module is used for outputting a winding drawing calculation result file by adopting a PCB ASCII file type and storing the winding drawing calculation result file in a specified path.
6. The automatic wiring software system for the planar transformer as claimed in claim 5, wherein the magnetic core model import and export module is configured to read and write the magnetic core model into the database in real time, so as to update the database.
7. The automatic wiring software system for planar transformers according to claim 5, wherein said dimensional parameter input module is used to form drawing rules and constraints for unified planar transformer winding design in a manner editable by default values.
8. The automatic wiring software system for the planar transformer as claimed in claim 5, wherein the winding parameters input by the winding parameter input module include total number of layers of the planar transformer, starting position, rotation direction, number of shielding layers, distribution of the shielding layers, and winding information, and the winding information includes winding number, number of turns of the winding, and number of layers of the winding, which are added or deleted in a table form.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7797661B2 (en) * | 2004-09-03 | 2010-09-14 | Abb Research Ag | Method and apparatus for describing and managing properties of a transformer coil |
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- 2021-12-07 CN CN202111483677.1A patent/CN114239473B/en active Active
Patent Citations (4)
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| CN102222124A (en) * | 2011-03-22 | 2011-10-19 | 北京航空航天大学 | Platform and method for automatically generating design schematic diagram of automatic test system |
| CN106599488A (en) * | 2016-12-16 | 2017-04-26 | 保定天威集团特变电气有限公司 | Automatic transformer coil drawing method and system |
| CN112818500A (en) * | 2019-11-15 | 2021-05-18 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Visual modeling method for transformer winding |
| CN111312490A (en) * | 2020-02-21 | 2020-06-19 | 中国矿业大学 | PCB active planar transformer and manufacturing method thereof |
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