CN111192749A - High-voltage power transformer of electron beam generator and assembly process thereof - Google Patents
High-voltage power transformer of electron beam generator and assembly process thereof Download PDFInfo
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- CN111192749A CN111192749A CN202010208228.5A CN202010208228A CN111192749A CN 111192749 A CN111192749 A CN 111192749A CN 202010208228 A CN202010208228 A CN 202010208228A CN 111192749 A CN111192749 A CN 111192749A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2814—Printed windings with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a high-voltage power transformer of an electron beam generator, which comprises two E-shaped magnetic cores, a magnetic core positioning block, a primary side framework, a primary side winding, a secondary side winding PCB circuit board and an insulating square barrel, wherein the two E-shaped magnetic cores are arranged on the two E-shaped magnetic cores; the primary winding is wound on the primary side framework, the insulating square barrel is sleeved on the primary winding, the secondary winding PCB is sleeved outside the insulating square barrel, the primary winding, the insulating square barrel and the secondary winding PCB are integrated, the magnetic core positioning block is used for limiting the E-shaped magnetic cores, the two E-shaped magnetic cores are placed up and down, the middle column of each E-shaped magnetic core is placed in the middle hole of the primary side framework, and the side column is sleeved outside the secondary winding. The secondary coil of the design adopts a PCB circuit board mode, and the whole structure of the transformer is compact by controlling the production process of the transformer, the primary input voltage generates a magnetic field, the interference to the secondary is small, a gap is reserved between the PCB circuit boards of the secondary winding, the heat dissipation is good, the performance is stable, the use is long, and the voltage fluctuation is small.
Description
Technical Field
The present invention relates to a transformer device, and more particularly to a transformer device for a high voltage power supply of an electron beam generator.
Background
The high-voltage power supply used by the electron beam generator is a precise high-voltage direct-current power supply, the output voltage performance is required to be stable, the precision is high, the voltage fluctuation is extremely small in use, the phenomena of discharging and the like cannot occur, and the transformer must be reliable, durable and good in stability. At present, no standard transformer suitable for high-end equipment such as an electron beam welding machine and an electron beam 3D printer is available in the market, and for the reasons, the transformer for the electron beam high-voltage generator is designed, so that the problems of stable voltage transmission and long-time working are solved.
Disclosure of the invention
The invention provides a transformer for a high-voltage direct-current power supply required by an electron beam generator, and aims to realize stable voltage, small fluctuation and long-time work and ensure stable output performance of the high-voltage power supply of the electron beam generator.
In order to achieve the above object, the technical solution of the present invention is as follows:
a high-voltage power transformer of an electron beam generator comprises two E-shaped magnetic cores, magnetic core positioning blocks, a primary side framework, a primary side winding, a secondary side winding PCB circuit board and an insulating square barrel; the primary winding is wound on the primary side framework, the insulating square barrel is sleeved on the primary winding, the secondary winding PCB is sleeved outside the insulating square barrel, the primary winding, the insulating square barrel and the secondary winding PCB are integrated, the magnetic core positioning block is used for limiting the E-shaped magnetic cores, the two E-shaped magnetic cores are placed up and down, the middle column of each E-shaped magnetic core is placed in the middle hole of the primary side framework, and the side column is sleeved outside the secondary winding.
The E-shaped magnetic core is made of ferrite and is formed by a beam, side columns and a middle column in an E shape.
The magnetic core positioning block is made of insulating materials and is rectangular.
The primary side framework is made of insulating materials and is rectangular box-shaped.
The primary winding is formed by winding an enameled wire on the outer side of the primary framework, and the number of turns and the wire diameter are determined by design calculation.
The secondary winding PCB circuit board is formed by etching and precisely manufacturing a copper-clad plate, and a plurality of (more than or equal to 2) same PCB boards are connected in series.
The distance between every two circuit boards of the secondary winding PCB circuit board is 3-4 mm.
A high-voltage power transformer of an electron beam generator comprises the following assembly processes:
(1) firstly, winding a primary winding on a primary side framework, fixing the primary winding by using insulating glue, and binding two ends of the winding by using wires made of insulating materials for later use;
(2) two magnetic core positioning blocks are symmetrically and fixedly arranged on the insulating fixing plate, a square groove in the middle of each positioning block faces inwards, a magnetic core insulating protection groove is erected in a square groove in the middle of each magnetic core positioning block, the magnetic core protection groove faces inwards; placing the E-shaped magnetic core on an insulation fixing plate along the magnetic core insulation protection groove, wherein the side column and the middle column of the E-shaped magnetic core are upward, and the magnetic core beam is attached to the insulation fixing plate;
(3) placing a primary side framework wound with a primary side winding into an E-shaped magnetic core middle column, then installing a secondary side winding PCB circuit board on the assembled magnetic core, overlapping and installing a plurality of secondary side winding PCB circuit boards 9, connecting the input end of each secondary side winding PCB circuit board with the output end of an adjacent board in series, and so on; after the assembly and series connection process of the secondary winding PCB circuit board is completed, the insulating square barrel is placed in the middle of the middle square hole of the secondary winding PCB circuit board;
(4) taking a main framework, wherein a flat surface is arranged on the main framework, one side of the main framework, which is provided with a middle boss and a side boss, is downward, the middle boss of the main framework is pressed on a primary side framework and is sleeved in a middle square hole of an insulating square barrel, and a magnetic core insulating protection groove assembled in the previous process is arranged in a side square groove of the main framework;
(5) taking an E-shaped magnetic core, arranging a cross beam on the E-shaped magnetic core, arranging side columns and a magnetic core middle column on two sides of the magnetic core downwards respectively, arranging the magnetic core middle column into a square hole in the center of the main framework, and arranging the side columns on the left side and the right side of the magnetic core into magnetic core insulation protective grooves on the left side and the right side respectively, wherein the magnetic core insulation protective grooves are vertically symmetrical to the E-shaped magnetic core installed in the previous working procedure;
(6) taking an insulating fixing plate, wherein the insulating fixing plate is vertically symmetrical to the insulating fixing plate installed in the previous process, taking two magnetic core positioning blocks, and clamping two sides of a magnetic core in a square groove in the middle of each magnetic core positioning block;
(7) and taking the fixing frame, placing the fixing frame between the two insulating fixing plates, wherein the upper crossbeam of the fixing frame and the main framework are at the same side, and the reinforcing connecting angle piece on the fixing frame is arranged at the outer side to connect and fasten the two insulating fixing plates to finish assembly.
Further, in the step (3), the distance between the insulating square barrel and the periphery of the middle square hole of the secondary winding PCB is kept to be 3-4mm, and the middle hole of the square barrel, the primary winding and the primary side framework are kept to be in equal gaps, so that the insulating oil (gas) flow, the heat dissipation and the uniform magnetic flux distribution are facilitated.
The invention has the beneficial effects that:
the secondary coil of the design adopts a PCB circuit board mode, and the whole structure of the transformer is compact by controlling the production process of the transformer, the primary input voltage generates a magnetic field, the interference to the secondary is small, a gap is reserved between the PCB circuit boards of the secondary winding, the heat dissipation is good, the performance is stable, the use is long, and the voltage fluctuation is small.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top plan view of the present invention;
FIG. 4 is an isometric view of the present invention;
FIG. 5 is a schematic view of an insulating fixing plate according to the present invention;
FIG. 6 is a schematic view of the present invention;
FIG. 7 is a schematic view of the E core of the present invention;
FIG. 8 is a schematic view of a positioning block of the magnetic core according to the present invention;
FIG. 9 is a schematic view of a magnetic core insulation shield groove of the present invention;
FIG. 10 is a schematic diagram of a primary winding and a primary skeleton according to the present invention;
FIG. 11 is a schematic view of an insulating square barrel of the present invention;
FIG. 12 is a schematic diagram of a secondary winding PCB circuit board of the present invention;
FIG. 13 is a schematic view of the main frame of the present invention.
In the figure: 1. the insulation fixing plate comprises an insulation fixing plate, a mounting fixing frame, a magnetic core of an E type, a magnetic core positioning block, a magnetic core insulation protection groove, a primary side framework, a primary side winding, an insulation square barrel, a secondary side winding PCB (printed circuit board), a main framework, an insulation material bolt and a nut, and a metal material screw and a nut, wherein the insulation fixing plate is 2; 1-1, a fixing frame mounting hole, 1-2, a magnetic core fixing mounting hole, 1-3, a hoisting grabbing square hole, 1-4, a heat conduction square hole, 1-5, a positioning block mounting hole, 1-6, an insulation fixing plate connecting hole, 2-1, an upper cross beam, 2-2, side edges, 2-3, a lower cross beam, 2-4, a fastening connecting corner piece, 2-5, a box body connecting hole, 2-6, an insulation fixing plate mounting hole, 3-1, a cross beam, 3-2, a side edge column, 3-3, a middle column, 4-1, a middle boss, 4-2, a middle square groove, 4-3, an insulation fixing plate mounting hole, 5-1, a magnetic core protection groove, 6-1, a center square hole, 8-1, an insulation square barrel center hole, 9-1, a secondary side winding PCB middle square hole, 9-2 parts of PCB mounting holes, 9-3 parts of secondary windings, 9-4 parts of secondary windings, 9-5 parts of secondary winding PCB wiring areas, 9-6 parts of secondary winding input and output ends, 10-1 parts of side square grooves, 10-2 parts of middle bosses, 10-3 parts of middle square holes, 10-4 parts of side bosses and 10-5 parts of mounting holes.
Detailed Description
The present invention will be described in detail with reference to examples.
As shown in fig. 1 to 13, an isolation transformer includes an insulation fixing plate 1, a mounting fixing frame 2, an E-shaped magnetic core 3, a magnetic core positioning block 4, a magnetic core insulation protection slot 5, a primary side frame 6, a primary side winding 7, an insulation square barrel 8, a secondary side winding PCB 9, a primary frame 10, a stud bolt and a nut 11, and the like.
The insulating fixing plate 1 is provided with an installation positioning hole, an oil circulation square hole and a magnetic core installation positioning hole which are arranged in a left-right mode.
The mounting and fixing frame 2 is made of metal, is used for connecting the insulating fixing plate and is connected to the transformer box body, and has the function of grounding and releasing static electricity.
The E-shaped magnetic core 3 is made of ferrite and is provided with a beam, side columns and a middle column, and is in an E shape.
The magnetic core positioning block 4 is made of insulating materials, is rectangular, is limited by a magnetic core, is provided with a connecting and fixing hole, and is limited by a magnetic core square groove.
The magnetic core insulation protective groove 5 is in a strip-shaped square groove shape.
The primary side framework 6 is made of insulating materials and is rectangular box-shaped, the outer side of the primary side framework is wound around the primary side winding, and an inner hole is sleeved on the middle column of the magnetic core.
The primary winding 7 is formed by winding an enameled wire on the outer side of a primary framework, and the number of turns and the wire diameter are determined by design calculation.
The insulating square barrel 8 is in a rectangular square barrel shape and is arranged between the primary winding and the secondary winding to play a role in isolation and insulation protection.
The secondary winding PCB circuit board 9 is formed by etching and precisely manufacturing a copper-clad plate, and is formed by connecting a plurality of same PCB plates in series.
The main framework 10 is made of insulating materials, has the functions of compressing and fixing the magnetic core, fixing the magnetic core insulating protective groove, fixing the primary framework and fixing the insulating square barrel, is provided with unthreaded holes at the periphery of the main framework, fastens the transformer through bolts and nuts, and is connected on the fixing plate.
The bolt (with insulating material and metal material) plays a role in fixing, connecting and compressing the fixed plate coil and the framework.
An isolation transformer comprises the following assembly processes:
before the invention is assembled, a primary winding 7 is wound on a primary framework 6, the wire diameter and the number of turns of the primary winding are determined by design calculation, the primary winding is fixed by insulating glue, and two ends of the winding are firmly tied by wires made of insulating materials for standby. The two ends of the primary winding are properly left with allowance and used as input and output ends.
Two magnetic core positioning blocks 4 are symmetrically arranged on the insulating fixing plate 1, square grooves 4-2 in the middle of the positioning blocks are inward, and bolts and nuts 11 penetrate through positioning mounting holes 1-5 of the insulating fixing plate and holes 4-3 in the magnetic core positioning blocks to be connected and fastened.
The magnetic core insulation protective groove 5 is erected in the middle square groove 4-2 of the magnetic core positioning block, the left side and the right side are respectively provided, and the magnetic core protective groove 5-1 faces inwards.
And (3) placing the E-shaped magnetic core 3 on the insulating fixing plate 1 along the magnetic core insulating protection groove 5-1, wherein the side column 3-2 and the middle column 3-3 of the E-shaped magnetic core are upward, and the magnetic core beam 3-1 is attached to the insulating fixing plate 1.
And placing the primary side framework 6 of the wound primary side winding 7 into the middle column 3-3 of the E-shaped magnetic core.
The ten screw rods 11 made of insulating materials are respectively placed into the holes 1-2 in the insulating fixing plate 1 and are fastened by insulating material nuts, the insulating material nuts are screwed into each screw rod 11, and the upper surface of each nut is 10 millimeters higher than the thickness of the magnetic core beam 3-1. A secondary winding PCB (printed circuit board) 9 is installed on an assembled magnetic core, a hole 9-2 of the secondary winding PCB passes through a screw rod 11, a primary winding 6 and a primary winding framework 7 are arranged in a square hole 9-1 in the middle of the secondary winding PCB, so that a plurality of secondary winding PCB 9 are installed in a superposition mode, the specific number of the secondary winding PCB is calculated by design, a distance of about 3 millimeters is kept between every two adjacent secondary winding PCBs 9, the secondary winding PCB is beneficial to entering and flowing of insulating oil (gas), and the heat dissipation and insulation effects are achieved. The input end of each secondary winding PCB circuit board is connected with the output end of the adjacent board in series, and so on.
After the assembly and series connection process of the secondary winding PCB circuit board 9 is completed, the insulating square barrel 8 is placed in the middle of the middle square hole 9-1 of the secondary winding PCB circuit board 9, the square barrel 8 and the periphery of the middle square hole 9-1 of the secondary winding PCB circuit board 9 keep an interval of about 4mm, and the middle hole 8-1 of the square barrel, the primary winding 7 and the primary side framework 6 keep equal gaps, so that the flow of insulating oil (gas) is facilitated, the heat dissipation is facilitated, and the uniform distribution of magnetic flux is facilitated.
A main framework 10 is taken, a flat surface is arranged on the upper surface, one side with a middle boss 10-2 and a side boss 10-4 is downward, the middle boss 10-2 of the main framework 10 is pressed on a primary framework and is sleeved in a middle square hole 8-1 of an insulating square barrel 8. The magnetic core insulation protective groove 5 assembled in the previous working procedure is arranged in the square groove 10-1 on the side edge of the main framework in the working procedure, and the screw 11 assembled in the previous working procedure penetrates through the mounting hole 10-5 of the main framework and is fastened by a nut.
And taking an E-shaped magnetic core 3, arranging a cross beam 3-1 on the top, respectively placing side columns 3-2 and a magnetic core middle column 3-3 on two sides of the magnetic core downwards, placing the magnetic core middle column into a central square hole 10-3 of the main framework, respectively placing the side columns 3-2 on the left side and the right side of the magnetic core into magnetic core insulation protective grooves 5-1 on the left side and the right side, and vertically symmetrical with the E-shaped magnetic core installed in the previous working procedure.
And then taking the insulating fixing plate 1, and vertically symmetrical with the insulating fixing plate 1 installed in the previous procedure, wherein a screw rod 11 installed in the previous procedure penetrates through a magnetic core fixing and installing hole 1-2 on the newly installed insulating fixing plate 1 and is fastened by a nut.
Two magnetic core positioning blocks 4 are taken, two sides of a magnetic core 3 are respectively clamped in a square groove 4-2 in the middle of the magnetic core positioning block, and a mounting hole 4-3 on the magnetic core positioning block 4 and a positioning mounting hole 1-5 on the insulating fixing plate 1 are connected and fastened through bolts and nuts.
A fixing frame 2 is placed between two insulation fixing plates 1, a beam 2-1 on the fixing frame 2 is at the same side with a main framework 10, a reinforced connection angle piece 2-4 on the fixing frame 2 is at the outer side, and fixing frame mounting holes 2-6 are in one-to-one correspondence with the insulation fixing plate mounting holes 1-1 and are fastened by screws.
Ten metal screws 12 with proper length penetrate through the holes 1-6 (the diameter of the screw is matched with the hole) on the two insulation fixing plates 1 and are fastened by metal nuts.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (9)
1. A high-voltage power transformer of an electron beam generator is characterized in that: the device comprises two E-shaped magnetic cores, a magnetic core positioning block, a primary side framework, a primary side winding, a secondary side winding PCB and an insulating square barrel; the primary winding is wound on the primary side framework, the insulating square barrel is sleeved on the primary winding, the secondary winding PCB is sleeved outside the insulating square barrel, the primary winding, the insulating square barrel and the secondary winding PCB are integrated, the magnetic core positioning block is used for limiting the E-shaped magnetic cores, the two E-shaped magnetic cores are placed up and down, the middle column of each E-shaped magnetic core is placed in the middle hole of the primary side framework, and the side column is sleeved outside the secondary winding.
2. A high voltage power transformer for an electron beam generator as claimed in claim 1, wherein: the E-shaped magnetic core is made of ferrite and is formed by a beam, side columns and a middle column in an E shape.
3. A high voltage power transformer for an electron beam generator as claimed in claim 1, wherein: the magnetic core positioning block is made of insulating materials and is rectangular.
4. A high voltage power transformer for an electron beam generator as claimed in claim 1, wherein: the primary side framework is made of insulating materials and is rectangular box-shaped.
5. A high voltage power transformer for an electron beam generator as claimed in claim 1, wherein: the primary winding is formed by winding an enameled wire on the outer side of the primary framework, and the number of turns and the wire diameter are determined by design calculation.
6. A high voltage power transformer for an electron beam generator as claimed in claim 1, wherein: the secondary winding PCB circuit board is formed by etching and precisely manufacturing a copper-clad plate, and a plurality of same PCB boards are connected in series.
7. A high voltage power transformer for an electron beam generator as claimed in claim 6, wherein: the distance between every two circuit boards of the secondary winding PCB circuit board is 3-4 mm.
8. A high voltage power transformer for an electron beam generator as claimed in claim 1, assembled by the process of:
(1) firstly, winding a primary winding on a primary side framework, fixing the primary winding by using insulating glue, and binding two ends of the winding by using wires made of insulating materials for later use;
(2) two magnetic core positioning blocks are symmetrically and fixedly arranged on the insulating fixing plate, a square groove in the middle of each positioning block faces inwards, a magnetic core insulating protection groove is erected in a square groove in the middle of each magnetic core positioning block, the magnetic core protection groove faces inwards; placing the E-shaped magnetic core on an insulation fixing plate along the magnetic core insulation protection groove, wherein the side column and the middle column of the E-shaped magnetic core are upward, and the magnetic core beam is attached to the insulation fixing plate;
(3) placing a primary side framework wound with a primary side winding into an E-shaped magnetic core middle column, then installing a secondary side winding PCB circuit board on the assembled magnetic core, overlapping and installing a plurality of secondary side winding PCB circuit boards 9, connecting the input end of each secondary side winding PCB circuit board with the output end of an adjacent board in series, and so on; after the assembly and series connection process of the secondary winding PCB circuit board is completed, the insulating square barrel is placed in the middle of the middle square hole of the secondary winding PCB circuit board;
(4) taking a main framework, wherein a flat surface is arranged on the main framework, one side of the main framework, which is provided with a middle boss and a side boss, is downward, the middle boss of the main framework is pressed on a primary side framework and is sleeved in a middle square hole of an insulating square barrel, and a magnetic core insulating protection groove assembled in the previous process is arranged in a side square groove of the main framework;
(5) taking an E-shaped magnetic core, arranging a cross beam on the E-shaped magnetic core, arranging side columns and a magnetic core middle column on two sides of the magnetic core downwards respectively, arranging the magnetic core middle column into a square hole in the center of the main framework, and arranging the side columns on the left side and the right side of the magnetic core into magnetic core insulation protective grooves on the left side and the right side respectively, wherein the magnetic core insulation protective grooves are vertically symmetrical to the E-shaped magnetic core installed in the previous working procedure;
(6) taking an insulating fixing plate, wherein the insulating fixing plate is vertically symmetrical to the insulating fixing plate installed in the previous process, taking two magnetic core positioning blocks, and clamping two sides of a magnetic core in a square groove in the middle of each magnetic core positioning block;
(7) and taking the fixing frame, placing the fixing frame between the two insulating fixing plates, wherein the upper crossbeam of the fixing frame and the main framework are at the same side, and the reinforcing connecting angle piece on the fixing frame is arranged at the outer side to connect and fasten the two insulating fixing plates to finish assembly.
9. A high voltage power transformer for an electron beam generator as claimed in claim 8, wherein: in the step (3), the distance between the insulating square barrel and the periphery of the middle square hole of the secondary winding PCB keeps 3-4mm, and the middle hole of the square barrel keeps equal gaps with the primary winding and the primary side framework, so that the insulating square barrel is favorable for flowing insulating oil and air, is favorable for heat dissipation and is favorable for uniform distribution of magnetic flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208228.5A CN111192749A (en) | 2020-03-23 | 2020-03-23 | High-voltage power transformer of electron beam generator and assembly process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208228.5A CN111192749A (en) | 2020-03-23 | 2020-03-23 | High-voltage power transformer of electron beam generator and assembly process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111192749A true CN111192749A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010208228.5A Pending CN111192749A (en) | 2020-03-23 | 2020-03-23 | High-voltage power transformer of electron beam generator and assembly process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707430A (en) * | 2021-09-03 | 2021-11-26 | 捷蒽迪电子科技(上海)有限公司 | PCB winding device and power module |
-
2020
- 2020-03-23 CN CN202010208228.5A patent/CN111192749A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707430A (en) * | 2021-09-03 | 2021-11-26 | 捷蒽迪电子科技(上海)有限公司 | PCB winding device and power module |
| CN113707430B (en) * | 2021-09-03 | 2024-01-26 | 捷蒽迪电子科技(上海)有限公司 | PCB winding device and power module |
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