CN106910609B - Inductor fabrication approach and inductor - Google Patents
Inductor fabrication approach and inductor Download PDFInfo
- Publication number
- CN106910609B CN106910609B CN201710104094.0A CN201710104094A CN106910609B CN 106910609 B CN106910609 B CN 106910609B CN 201710104094 A CN201710104094 A CN 201710104094A CN 106910609 B CN106910609 B CN 106910609B
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- magnetic core
- insulating tape
- inductor
- pedestal
- coil
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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
-
- 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
- H01F27/24—Magnetic cores
Abstract
The present invention provides a kind of inductor fabrication approach, including following: conducting wire is wound on the magnetic core column for be coated with the first insulating tape becomes inductance coil, and the second insulating tape for reinforcing inductance coil is wound outside inductance coil；Two insulation snap-gauges are inserted into the outside for being coated with the inductance coil of the second insulating tape；A third insulating tape is pasted respectively in magnetic core column two sides；The inductance coil insertion for posting third insulating tape is had in the magnetic core of annular frame structure；Magnetic core is fixed on pedestal；The terminal of conducting wire is drawn from the coil and is soldered in the signal pins of the pedestal；The inductor paint-dipping drying that upper step is obtained.The present invention also provides a kind of inductors.Inductor fabrication approach provided in an embodiment of the present invention can provide the production efficiency of inductor.
Description
Technical field
The present invention relates to the manufacturing methods of a kind of inductor and inductor.
Background technique
Inductor is the element that electric energy can be converted into magnetic energy and stored, and has filtering, inhibits immediate current, drop
The multiple functions characteristic such as low EMI noise and power conversion, is therefore widely used in electronic circuit field, such as oscillation, tuning, coupling
In the circuits such as conjunction, filtering, delay and deflection.The manufacture of common inductor is that shape on toroidal core is wound around using conducting wire
At coil, the through-hole that magnetic core surrounds is passed repeatedly through because conducting wire is longer, in winding process, because of the limitation of core structure, around
System needs staff to have been manually done, and manual coiling is cumbersome time-consuming, and the process of coiling be easy to cause the damage of conducting wire, operation
The individual difference and qualification of worker influences the quality of product also larger.Therefore, the production method of traditional inductor is raw
Production efficiency is lower, and product quality cannot be guaranteed.
Summary of the invention
In view of this, it is necessary to provide one kind can effectively improve the inductor fabrication approach of production efficiency and by the party
The inductor of method manufacture.
The embodiment of the present invention provides a kind of production method of inductor, comprising:
Conducting wire is wound on the magnetic core column for be coated with the first insulating tape becomes inductance coil, and use is wound outside inductance coil
In the second insulating tape for reinforcing inductance coil；
Two insulation snap-gauges are inserted into the outside for being coated with the inductance coil of the second insulating tape；
A third insulating tape is pasted respectively in magnetic core column two sides；
The inductance coil insertion for posting third insulating tape is had in the magnetic core of annular frame structure；
Magnetic core is fixed on pedestal；
The terminal of conducting wire is drawn from the coil and is soldered in the signal pins of the pedestal；
The inductor paint-dipping drying that upper step is obtained.
Preferably, the Kapton Tape that first insulating tape is 280 degree of heatproof or more；And/or
The Kapton Tape that the third insulating tape is 280 degree of heatproof or more.
Preferably, the polyester tape that second insulating tape is 130 degree of heatproof, and/or
The insulation snap-gauge is manufactured by reinforcing glass fiber.
Preferably, the conducting wire include at least one, it is per share include at least one metal wire.
Preferably, every wires be coated by polyester imine resin form, thermal level be 180 degree enamel covered wire, aluminum steel
Or copper-clad aluminum conductor.
Preferably, the top center of the pedestal is equipped with the groove for accommodating magnetic core, the signal pins are set to described
Pedestal periphery, the signal pins include a lead arm and an installing arm vertical with the lead arm, and the installing arm is from institute
The plane perpendicular for stating pedestal stretches out.
Preferably, being additionally provided with installation pin on the pedestal, the pedestal periphery is additionally provided with several downward opening U-shaped
Locating part.
Preferably, the magnetic core includes several magnetic core units being bonded side by side.
Preferably, the magnetic core column is that integral type or segmentation structure are located at when the magnetic core column is segmentation structure
Two sections of magnetic core columns at magnetic core column both ends are semi-cylindrical.
The embodiment of the present invention also provides a kind of inductor, including magnetic core, coil, the inductor further include a pedestal and
One magnetic core column, one end of the magnetic core are fixed on the pedestal, and the magnetic core column is located in the magnetic core, the coil winding
In on the magnetic core column, insulating layer is equipped between the coil and the magnetic core column and magnetic core.
The manufacturing method of inductor provided in an embodiment of the present invention, inductor no longer use traditional ring core structure,
But use seperated core structure, the first coiling inductance coil on linear magnetic core column, can be used automatic coil winding machine into
Row coiling, then the magnetic core column for being wound with inductance coil is placed in magnetic core.Compared to the mode of traditional coiling, the present invention is real
The method for applying example improves winding efficiency.And machine coiling can make the quality of product be guaranteed to avoid individual difference.
Detailed description of the invention
In attached drawing:
Fig. 1 shows the flow chart of the manufacturing method of the inductor of one embodiment of the invention.
Fig. 2 shows the stereogram exploded views of the inductor of one embodiment of the invention.
Fig. 3 shows a kind of schematic diagram for embodiment that magnetic core column shown in Fig. 2 is segmentation structure.
Fig. 4 shows the perspective view of the inductor of one embodiment of the invention.
Main element symbol description
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.It is appreciated that attached drawing is only for reference and description, not it is used to this hair
It is bright to limit.The size shown in attached drawing is only to be convenient for clearly describing, and does not limit proportionate relationship.
It should be noted that it can be directly to separately when a component is considered as " connection " another component
One component may be simultaneously present component placed in the middle.Unless otherwise defined, all technologies used herein and section are academic
Language has the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.Herein in the description of the invention
Used term, which is only for the purpose of describing specific embodiments, is not intended to limit the present invention.
Please refer to Fig. 1 and Fig. 2, the manufacturing method of the inductor 100 of one embodiment of the invention the following steps are included:
S1, conducting wire 11 is wound on the magnetic core column 20 for being coated with the first insulating tape 12 becomes inductance coil 10, in inductance
The second insulating tape 18 for reinforcing the inductance coil 10 is wound outside coil 10.
Specifically, ferrite of the magnetic core column 20 by curie point greater than 200 degree is made, the magnetic in present embodiment
The cross sectional shape of stem 20 is track type, and in other embodiments, the magnetic core column 20 can also be by other materials such as neodymium iron boron etc.
It is made, the cross sectional shape of the magnetic core column 20 can be rectangle, circle, ellipse or other shapes.
Because magnetic core column 20 is linear type, without perforation when surrounding 20 coiling of magnetic core column, can be used automatic
Coil winding machine surrounds the progress coiling of magnetic core column 20 for being coated with the first insulating tape 12, and automatic coil winding machine winding efficiency is high, automatic complete
At winding displacement, compared to the coiling processing that traditional manual coiling has been more suitable for batches of inductance coil.The conducting wire 11 can
Think a wires, or multiply and around structure, per share may include one or more metal wire, the metal wire example
It such as can be copper wire, aluminum steel or copper-clad aluminum conductor.In present embodiment, the conducting wire 11 includes two strands, and per share includes 50 gold
Belong to line (not shown).The metal wire use coated by polyester imine resin form, thermal level is the enamel covered wire of 180 degree.
First insulating tape 12 is scratch resistant adhesive tape, can select 280 degree of heatproof or more of Kapton Tape.Other
In embodiment, first insulating tape 12 can also be polyester tape.
Second insulating tape 18 is wound in outside inductance coil and wraps up the inductance coil 10, for reinforcing the inductance
Coil 10 prevents inductance coil 10 from loosening, and guarantees being set around on magnetic core column 20 for 10 compacted mass of inductance coil.Present embodiment
In, second insulating tape 18 can be higher than 130 degree of polyester tape for heatproof.
S2 is inserted into two insulation snap-gauges 16 in the outside for being coated with the inductance coil 10 of the second insulating tape 18.
Specifically, the insulation snap-gauge 16 can be made of plastics, the model of the plastics can be FR530, humidity index 155
DEG C, in other embodiments, the insulation snap-gauge 16 can also be manufactured by reinforcing glass fiber.The insulation snap-gauge 16 is U-shaped,
Including bottom plate 161 and the side plate 162 vertically extended by 161 two sides of bottom plate, the width of the bottom plate 161 substantially with the inductance
The width of coil 10 is equal.
S3 pastes a third insulating tape 19 in 20 two sides of magnetic core column respectively.
Specifically, the third insulating tape 19 can select 280 degree of heatproof or more of polyimides in present embodiment
Adhesive tape.In other embodiments, the third insulating tape 19 can also be polyester tape.The third insulating tape is for wrapping
Cover the end face of magnetic core column 20 and the side of inductance coil 10.
S4 has the merging of inductance coil 10 in the magnetic core 30 of annular frame structure.
Specifically, the magnetic core 30 can be made by iron silicon materials, in other embodiments, the magnetic core 30 can also be by iron-based
Non- crystalline flour, iron powder, aerosolization iron aluminum silicon powder or other materials production.The magnetic core 30 can be an integral structure, or point
Body formula structure, when being split type structure, it may include two or more magnetic core units 32, the magnetic core unit 32 have annular frame
Structure, such as rectangle, each magnetic core unit 32 has a predetermined power, and in present embodiment, the magnetic core 30 includes 3 magnetic core lists
Member 32.The opening face of 3 magnetic core units 32 is bonded side by side, and magnetic core 30 is made also to have annular frame structure.The present invention is real
Apply manufacturing method magnetic core list according to used in the power selection magnetic core 30 for the inductor to be made of the inductor of example
The quantity of member 32, provides elastic selection for the production and manufacture of inductor, no longer needs to redesign inductance according to different needs
Device saves the design and manufacturing time of inductor.It will be understood by those skilled in the art that the width W1 of the magnetic core column 20 with
The opening width W3 of the magnetic core unit 32 is adapted to, height H1 and institute of the inductance coil 10 between the two insulation snap-gauge 16
The height H3 for stating the opening of magnetic core unit 32 is adapted, and the length L1 (please referring to Fig. 3) of the magnetic core column 20 is set side by side with described
The sum of the thickness for the magnetic core unit 32 set is adapted.Those skilled in the art are further appreciated that the magnetic core column 20 may be
Segmental structure, the thickness of each section of magnetic core column is suitable with the thickness of the magnetic core unit 32, can be according to the inductance to be made
The quantity of magnetic core unit 32 used in device uses the magnetic core column of corresponding number section.Moreover, when using multistage magnetic core column, Ke Yiduo
Section magnetic core column is cuboid, can also be using the magnetic core column of interlude as cuboid, and the magnetic core column at both ends is semicylinder, and is made whole
The magnetic core column of body is in racetrack or ellipse.
Magnetic core 30 is fixed on pedestal 40 by S5.
Specifically, glue can be used or magnetic core 30 is fixed on pedestal 40 by other fixed structures.
The pedestal 40 can be made of plastics, and the models of the plastics can be FR530, and 155 DEG C of humidity index.The pedestal
40 top centers are equipped with the groove 42 for accommodating 30 end of magnetic core, and signal pins 44 are additionally provided on the pedestal 40 and installation is drawn
Foot 46.In present embodiment, the signal pins 44 are four, in the quadrangle of the pedestal 40, other embodiments, institute
Stating the quantity of signal pins can be other values according to the design needs, such as 2,6.The signal pins 44 include a lead
Arm 441 and an installing arm 442 vertical with the lead arm 441.The installing arm 442 extends perpendicularly out the bottom of the pedestal 40
Face, for being inserted into the telltale hole of the device such as circuit board of installing the inductor, the lead arm 441 stretches out the one of pedestal 40
Side.The installation pin 46 also extends perpendicularly out the bottom surface of the pedestal 40, for being inserted into the mounting hole of circuit board, with firmly
Inductor 100 is fixedly installed on circuit board.The top perimeter of the pedestal 40 is additionally provided with downward opening U-shaped locating part
43。
The terminal of conducting wire 11 is drawn from the inductance coil 10 and is soldered to the signal pins 44 of the pedestal 40 by S6
On.
Specifically, the conducting wire 11 may have centainly after the inductance coil 10 extraction with the signal pins 44 that need to be connect
Distance, can by lead-out wire pass through locating part 43 opening further around be set to lead arm 441 on (please refer to Fig. 4), then by scolding tin into
Row welding, the trend of lead-out wire can be constrained in the locating part 43, and is tensioned lead-out wire, can effectively realize the folder to conducting wire 11
It holds and limits, can also make the cabling of conducting wire 11 beautiful, it is solid and reliable, it is easy to arrange.After conducting wire 11 is drawn from inductance coil 10
When the distance of the extremely signal pins 44 is longer, insulating sleeve can also be arranged on lead-out wire to prevent lead-out wire and magnetic core 30
Short circuit.
S7, by inductor paint-dipping drying.
Specifically, the outside of the magnetic core and inductance coil is coated on using the high-temp glue of high-temp glue such as high temperature resistant 180 degree,
It further fastens inductor and inductor is protected.
The manufacturing method of inductor provided in an embodiment of the present invention, inductor no longer use traditional ring core structure,
But seperated core structure is used, first the coiling inductance coil 10 on linear magnetic core column 20, can be used automatic winding
Machine carries out coiling, then the magnetic core column for being wound with inductance coil 10 is placed in magnetic core 30.The manufacturing man-hours of traditional inductor usually needs
400 seconds are wanted, is shorten to 120 seconds using the manufacturing man-hours of the manufacturing method of the present invention inductor, compared to traditional coiling
Mode, the method for the embodiment of the present invention improves winding efficiency.And machine coiling can make product to avoid individual difference
Quality be guaranteed.
Please also refer to Fig. 4, for the structure chart for the inductor 100 for using inductor fabrication approach of the invention to make, institute
It states inductor 100 and includes pedestal 40, the magnetic core 30 being fixedly installed on pedestal 40 and the magnetic core column 20 in magnetic core 30, it is described
Inductance coil 10 is wound on magnetic core column 20, and the first insulating tape 12 is equipped between the magnetic core column 20 and inductance coil 10 and is carried out absolutely
Edge.It is carried out outside the inductance coil 10 by the second insulating tape 18, insulation snap-gauge 16 and third insulating tape 19 and magnetic core 30
Insulation.The cross sectional shape of the magnetic core column 20 can be track type, rectangle, circle, ellipse or other shapes.The magnetic core column
20 can also be an integral structure or multi-segment structure, can be cuboid with multistage magnetic core column when using multi-segment structure,
Can be using the magnetic core column of interlude as cuboid, the magnetic core column at both ends is semicylinder.The magnetic core 30 or integral type knot
Structure or segmentation structure can choose the quantity for the magnetic core unit 32 that inductor includes according to the power of inductor.The inductance
It is provided with insulating tape made of insulating materials or insulation snap-gauge between coil 10 and magnetic core column 20 and magnetic core 30, can effectively prevent
Because conducting wire damages the short-circuit conditions that may cause.
The pedestal 40 can facilitate inductor to be installed on circuit board, and the top center of the pedestal 40 is equipped with for accommodating
The groove 42 of 30 end of magnetic core is additionally provided with signal pins 44 and installation pin 46 on the pedestal 40.The signal pins 44 are wrapped
Include a lead arm 441 and an installing arm 442 vertical with the lead arm 441.The installing arm 442 extends perpendicularly out the pedestal
40 bottom surface, for being inserted into the telltale hole of the device such as circuit board of installing the inductor, the lead arm 441 stretches out pedestal
40 side.The installation pin 46 also stretches out the bottom surface of the pedestal 40, for being inserted into the mounting hole of circuit board, with firm
Inductor 100 is fixedly installed on circuit board by ground.The top perimeter of the pedestal 40 is additionally provided with downward opening U-shaped limit
Part 43 can limit lead-out wire.The lead-out wire is welded in signal pins 44.
The manufacturing method of inductor provided in an embodiment of the present invention can have the same performance of traditional inductor, Er Qieneng
The manufacture efficiency for improving inductor, is particularly suitable for producing on a large scale.
Embodiment of the present invention and the "an" of singular used in the attached claims, " described " and
"the" is also intended to including most forms, unless the context clearly indicates other meaning.It is also understood that art used herein
Language "and/or" refers to may combine comprising one or more associated any or all of project listed.Term " first ",
" second " is only used for the purpose of description, is not understood to indicate or imply relative importance.In the description of this specification, art
The description of language " other embodiments ", " the present embodiment " etc. means specific features described in conjunction with this embodiment or example, structure, material
Material or feature are included at least one embodiment or example of the invention.In the present specification, to the schematic of above-mentioned term
Statement is not necessarily referring to identical embodiment or example.Moreover, the particular features, structures, materials, or characteristics of description can be
It can be combined in any suitable manner in any one or more embodiment or examples.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of inductor fabrication approach, characterized in that it comprises the following steps:
Conducting wire is wound on the magnetic core column for be coated with the first insulating tape becomes inductance coil, and winding is for adding outside inductance coil
Gu the second insulating tape of inductance coil；
Two insulation snap-gauges are inserted into the outside for being coated with the inductance coil of the second insulating tape；
A third insulating tape, the heatproof degree of the third insulating tape and the edge insulator are pasted respectively in magnetic core column two sides
The heatproof degree of plate is different；
The inductance coil insertion for posting third insulating tape is had in the magnetic core of annular frame structure；
Magnetic core is fixed on pedestal；
The terminal of conducting wire is drawn from the coil and is soldered in the signal pins of the pedestal；
The inductor paint-dipping drying that upper step is obtained；
Wherein, the signal pins be set to the pedestal periphery, the signal pins include a lead arm and one with the lead
The vertical installing arm of arm, the lead arm stretch out the side of the pedestal, and the installing arm is stretched from the plane perpendicular of the pedestal
Out；
Wherein, the pedestal periphery is additionally provided with several downward opening U-shaped locating parts；
Wherein, the end face of the third insulating tape cladding magnetic core column and the side of inductance coil, and the third insulating tape
It include upper, middle and lower, described two insulation snap-gauges are separately positioned on the opposite two sides of the inductance coil, each
The snap-gauge that insulate is U-shaped, and the top and lower part for the third insulating tape that reclines respectively.
2. inductor fabrication approach as described in claim 1, which is characterized in that first insulating tape is 280 degree of heatproof
Above Kapton Tape；And/or
The Kapton Tape that the third insulating tape is 280 degree of heatproof or more.
3. inductor fabrication approach as described in claim 1, which is characterized in that second insulating tape is 130 degree of heatproof
Polyester tape, and/or
The insulation snap-gauge is manufactured by reinforcing glass fiber.
4. inductor fabrication approach as described in claim 1, which is characterized in that the conducting wire include at least one, per share packet
Include at least one metal wire.
5. inductor fabrication approach as claimed in claim 4, which is characterized in that every wires are applied by polyester imine resin
Enamel covered wire, aluminum steel or the copper-clad aluminum conductor that system forms, thermal level is 180 degree.
6. inductor fabrication approach as described in claim 1, which is characterized in that the top center of the pedestal is equipped with for holding
Set the groove of magnetic core.
7. inductor fabrication approach as claimed in claim 6, which is characterized in that be additionally provided with installation pin on the pedestal.
8. inductor fabrication approach as described in claim 1, which is characterized in that the magnetic core includes several magnetic being bonded side by side
Core unit.
9. inductor fabrication approach as described in claim 1, which is characterized in that the magnetic core column is integral type or segmented knot
Structure, when the magnetic core column is segmentation structure, two sections of magnetic core columns positioned at magnetic core column both ends are semi-cylindrical.
10. a kind of inductor, including magnetic core, coil, which is characterized in that the inductor further includes a pedestal and a magnetic core column,
One end of the magnetic core is fixed on the pedestal, and the magnetic core column is located in the magnetic core, and the coil winding is in the magnetic
On stem, insulating layer is equipped between the coil and the magnetic core column and magnetic core, wherein between the coil and the magnetic core
Insulating layer includes: to be wrapped in the second insulating tape for being used to reinforce the coil outside the coil；It is inserted in and is coated with second absolutely
Two insulation snap-gauges in the outside of the coil of edge adhesive tape；It is pasted onto the third insulating tape of magnetic core column two sides, the third
The heatproof degree of insulating tape is different from the insulation heatproof degree of snap-gauge；Wherein, signal pins are set to the pedestal periphery,
The signal pins include that a lead arm and an installing arm vertical with the lead arm, the lead arm stretch out the pedestal
Side, the installing arm are stretched out from the plane perpendicular of the pedestal；Wherein, the pedestal periphery is additionally provided with several downward opening
U-shaped locating part；Wherein, the end face of the third insulating tape cladding magnetic core column and the side of inductance coil, and the third
Insulating tape includes upper, middle and lower, and described two insulation snap-gauges are separately positioned on the opposite of the inductance coil
Two sides, each insulation snap-gauge is U-shaped, and the top and lower part for the third insulating tape that reclines respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104094.0A CN106910609B (en) | 2017-02-24 | 2017-02-24 | Inductor fabrication approach and inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104094.0A CN106910609B (en) | 2017-02-24 | 2017-02-24 | Inductor fabrication approach and inductor |
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| Publication Number | Publication Date |
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| CN106910609A CN106910609A (en) | 2017-06-30 |
| CN106910609B true CN106910609B (en) | 2019-02-01 |
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| CN111034136B (en) * | 2017-08-21 | 2021-04-20 | 华为技术有限公司 | Inductor structure and manufacturing method thereof |
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|---|---|---|---|---|
| CN101552090A (en) * | 2008-12-15 | 2009-10-07 | 珠海科德电子有限公司 | High power density low-loss EV type inductor |
| CN202615984U (en) * | 2012-07-10 | 2012-12-19 | 成都驰驭电子科技有限公司 | Common-mode vertical inductor |
| CN203013486U (en) * | 2012-11-20 | 2013-06-19 | 绵阳普思电子有限公司 | Micro flyback transformer |
| CN203787245U (en) * | 2014-04-21 | 2014-08-20 | 广东易事特电源股份有限公司 | Improved UPS (uninterruptible power supply) inductor |
| CN104377023A (en) * | 2014-11-27 | 2015-02-25 | 广州金升阳科技有限公司 | Current transformer |
| CN205828044U (en) * | 2016-09-30 | 2016-12-21 | 青岛云路新能源科技有限公司 | Mixed magnetic circuit inducer |
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2017
- 2017-02-24 CN CN201710104094.0A patent/CN106910609B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552090A (en) * | 2008-12-15 | 2009-10-07 | 珠海科德电子有限公司 | High power density low-loss EV type inductor |
| CN202615984U (en) * | 2012-07-10 | 2012-12-19 | 成都驰驭电子科技有限公司 | Common-mode vertical inductor |
| CN203013486U (en) * | 2012-11-20 | 2013-06-19 | 绵阳普思电子有限公司 | Micro flyback transformer |
| CN203787245U (en) * | 2014-04-21 | 2014-08-20 | 广东易事特电源股份有限公司 | Improved UPS (uninterruptible power supply) inductor |
| CN104377023A (en) * | 2014-11-27 | 2015-02-25 | 广州金升阳科技有限公司 | Current transformer |
| CN205828044U (en) * | 2016-09-30 | 2016-12-21 | 青岛云路新能源科技有限公司 | Mixed magnetic circuit inducer |
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| CN106910609A (en) | 2017-06-30 |
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