CN108320896A - A kind of mutual inductor and production method using ultracrystallite punching, permalloy shielding - Google Patents
A kind of mutual inductor and production method using ultracrystallite punching, permalloy shielding Download PDFInfo
- Publication number
- CN108320896A CN108320896A CN201810411146.3A CN201810411146A CN108320896A CN 108320896 A CN108320896 A CN 108320896A CN 201810411146 A CN201810411146 A CN 201810411146A CN 108320896 A CN108320896 A CN 108320896A
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- Prior art keywords
- mutual inductor
- punching
- shell
- magnetic core
- pieces
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
-
- 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
- H01F27/02—Casings
-
- 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
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
- 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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
Abstract
Ultracrystallite punching is used the present invention relates to a kind of, the mutual inductor and production method of permalloy shielding, it uses ultracrystallite, have the advantages that magnetic permeability is high, ensure that the consistency of mutual inductor is better than product at the same level, permalloy shielding case is used simultaneously, reduce external magnetic field to interference caused by mutual inductor, the ability that this mutual inductor can test low current is higher than product at the same level, it is symmetrically installed using both sides coiling, mutual inductor leakage reactance can be reduced, reduce the loss of mutual inductor, improve the accuracy of mutual inductor, general producer mutual inductor is limited to technical matters, it can only unilateral coiling, even if bilateral coiling, it is also from fly line outside mutual inductor, it is not beautiful enough, and the present invention is using internal quickly connection, it is i.e. both artistic and practical, the installation speed of mutual inductor is greatly accelerated again.
Description
Technical field
The present invention relates to a kind of mutual inductor shielded using ultracrystallite punching, permalloy and production methods.
Background technology
No matter magnetic material on the market at present, be used as the magnetic core of inductive reactance or mutual inductor, general from cost consideration
All it is to use strip coil around such as silicon steel iron core, ultracrystallite iron core, permalloy iron core.But in order to need to make special shape
Shape is conducive to process, then silicon steel punching or permalloy punching can only be used to be stacked and formed.But the magnetic permeability of silicon steel punching
It is too low, it is difficult to reach the required precision of mutual inductor；And if using permalloy punching, cost is too high, while its magnetic flux is close
Degree is too low, is unfavorable for making the mutual inductor of high current or reactor.
All the problems above is avoided if it can be processed using ultracrystallite punching, because ultracrystallite possesses suitable magnetic
Flux density and higher magnetic permeability, but since the monolithic of ultracrystallite is too crisp, punching can not be made.
Invention content
The purpose of the present invention is to overcome the above shortcomings and to provide utilize ultracrystallite punching, possess suitable magnetic flux density with
And higher magnetic permeability, and a kind of mutual inductor shielded using ultracrystallite punching, permalloy of magnetic interference can be reduced
And production method.
The object of the present invention is achieved like this：
A kind of mutual inductor shielded using ultracrystallite punching, permalloy, it is made of magnetic core, shielding case and shell；
Wherein magnetic core includes the two pieces of punchings in left and right, and every piece of punching is formed by stacking by polylith monolithic ultra micro chip, punching
Surface be coated with resinous coat, and be wound with coil in two punchings；
The shielding case is to be stamped to form by permalloy, and shielding case is spliced for two pieces by left and right, every piece of shape
Shape is consistent with the shape of monolithic magnetic core, and two pieces of left and right can split and magnetic core is allowed to be put into wherein up and down, left after magnetic core is put into
There are gaps among right two pieces of shielding cases；
The shell is spliced by upper and lower two half-shells, after the sub-assembly that magnetic core, shielding case form is put into shell, shell
Up and down spell merga pass hasp complete shell and magnetic core, shielding case fix, to constitute complete mutual inductor.
The fixed connection point of terminal is equipped in shell.
After the sub-assembly that the magnetic core, shielding case form is put into shell, shrapnel is added between sub-assembly both sides and shell.
Every piece of punching is formed by stacking by polylith monolithic ultra micro chip, and the thickness of monolithic ultra micro chip is 30um.
A kind of production method of the mutual inductor shielded using ultracrystallite punching, permalloy, the step of production method be：
1) it takes ten monolithic ultracrystallites to be superimposed up and down, and recruitment is clamping, puts annealing furnace tempering into, after taking-up,
With high-viscosity glue water cure, the ultra micro chip being superimposed can be become after solidification, then make needs with punching machine or with wire cutting
Punching shape, subsequent multi-disc punching recruitment folding, which is added together, to be clipped, double tempering, it is secondary use glue curing, with rear end face
It is polished with sand paper, ensures that two panels punching pairing is opaque, and in the surface coated with resins coating of punching, in two punchings after insulation
Upper coiling simultaneously connects secondary terminals, and connects internal connection terminal and two pieces of magnetic cores are made；
2) the two pieces of shielding cases that can be split up and down in left and right, the monolithic of the two pieces of shielding cases in left and right is made with permalloy punching press
Shape is consistent with magnetic core, and size is more than magnetic core, and two pieces of magnetic cores are respectively put into the two pieces of shielding cases in left and right and form sub-assembly, left
There are gaps for the centre of right two pieces of shielding cases, and shielding case is avoided to form short-circuited conducting sleeve；
3) the about two pieces shells being spliced are made, in shell in equipped with the place for being specially fixedly connected with terminal, magnetic core,
The sub-assembly of shielding case composition is put into shell, and spring is added between sub-assembly and outer casing inner wall, ensures magnetic core and connector
Contact is good, then by upper and lower two pieces of shell splits, the fixation of shell is completed by hasp outside the shell, finally by super
Complete mutual inductor has just been made in sound wave cleaning.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of this mutual inductor and production method using ultracrystallite punching, permalloy shielding, it uses ultracrystallite, has
The high advantage of magnetic permeability ensures that the consistency of mutual inductor is better than product at the same level, while using permalloy shielding case, reduces extraneous
To interference caused by mutual inductor, the ability that this mutual inductor can test low current is higher than product at the same level in magnetic field, using both sides around
Line is symmetrically installed, and can reduce mutual inductor leakage reactance, reduces the loss of mutual inductor, improves the accuracy of mutual inductor, and general producer is mutual
Sensor is limited to technical matters, can only unilateral coiling, even if bilateral coiling, and the fly line outside the mutual inductor is not beautiful enough, and
The present invention is quickly connected using internal, i.e., both artistic and practical, and greatly accelerates the installation speed of mutual inductor.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the mutual inductor shielded using ultracrystallite punching, permalloy of the present invention.
Fig. 2 is the structural schematic diagram of magnetic core in the present invention.
Fig. 3 is the structural schematic diagram of punching in the magnetic core in Fig. 2.
Fig. 4 is the overlaying structure figure of punching in Fig. 3.
Fig. 5 is the structural schematic diagram after the punching wound around coil in Fig. 3.
Fig. 6 is the structural schematic diagram of shielding case in the present invention.
Fig. 7 is the schematic diagram before shielding case on magnetic core cover.
Fig. 8 is schematic diagram when magnetic core and shielding case are put into shell lower half.
Wherein：Magnetic core 1, shielding case 2, shell 3, punching 4, coil 5, hasp 6.
Specific implementation mode
Referring to Fig. 1, the present invention relates to a kind of mutual inductors shielded using ultracrystallite punching, permalloy, it is by magnetic core
1, shielding case 2 and shell 3 form.
Such as Fig. 2 to Fig. 5, wherein magnetic core 1 includes the two pieces of punchings 4 in left and right, and every piece of punching 4 is by the list of polylith 30um thickness
The superposition tempering solidification of piece ultra micro chip, then made of punching machine or wire cutting, then double tempering solidification, the surface of punching 4
Insulating effect is played coated with resinous coat, being wound with coil 5 in two punchings 4 after insulation is made complete magnetic core 1.
The production method of magnetic core 1 is：The normal thickness of monolithic ultracrystallite is 30um, and ten are superimposed, tooling is used
It clips, is tempered into annealing furnace, after taking-up, with high-viscosity glue water cure, the ultra micro chip of 0.3mm can be become after solidification, then
The shape that the punching 4 of needs is made with punching machine (quantity can use wire cutting less), finally uses tooling with the punching 4 of required the piece number
It is superimposed, double tempering, secondary that glue curing, end face is used to be polished with sand paper, two panels magnetic core pairing is opaque, then
Insulating effect is played in the surface coated with resins coating of punching 4, coiling 5 and secondary terminals are connect in two punchings 4 after insulation,
And it connects internal connection terminal and magnetic core 1 is made.
Such as Fig. 6 and Fig. 7, the shielding case 2 is to be stamped to form by permalloy, and shielding case 2 is by the splicing of two pieces of left and right
Form, every piece of shape is consistent with the shape of monolithic magnetic core 1, only slightly larger than the specification of magnetic core 1, and left and right two pieces can on
Lower fractionation allows magnetic core 1 to be put into and wherein forms sub-assembly, and after magnetic core 1 is put into, there are gaps for the centre of the two pieces of shielding cases 2 in left and right, keep away
Exempt from shielding case 2 and forms short-circuited conducting sleeve.
Such as Fig. 1 and Fig. 8, the shell 3 is spliced by upper and lower two half-shells, the sub-assembly that magnetic core 1, shielding case 2 form
After being put into shell 3, shrapnel is added on sub-assembly both sides, ensures that magnetic core 1 and connector contact are good, is equipped in shell 3 in addition
The special place for being fixedly connected with terminal prevents the sliding of magnetic core 1 from causing change in location, after about 3 split of shell, finally by outside
Hasp 6 outside shell 3 completes the fixation of shell 3 and magnetic core 1, shielding case 2, and passes through ultrasonic cleaning, has just been made complete
Mutual inductor.
Claims (5)
1. a kind of mutual inductor shielded using ultracrystallite punching, permalloy, it is characterised in that：It is by magnetic core (1), shielding case
(2) it is formed with shell (3)；
Wherein magnetic core (1) includes the two pieces of punchings (4) in left and right, and every piece of punching (4) is formed by stacking by polylith monolithic ultra micro chip,
The surface of punching (4) is coated with resinous coat, and is wound with coil (5) on two punchings (4)；
The shielding case (2) is to be stamped to form by permalloy, and shielding case (2) is spliced for two pieces by left and right, every piece
Shape is consistent with the shape of monolithic magnetic core (1), and two pieces of left and right can split and magnetic core (1) is allowed to be put into wherein up and down, magnetic core
(1) after being put into, two pieces of left and right shielding case (2) is intermediate, and there are gaps；
The shell (3) is spliced by upper and lower two half-shells, and the sub-assembly that magnetic core (1), shielding case (2) form is put into shell
(3) after, shell (3) spell up and down merga pass hasp (6) complete shell (3) and magnetic core (1), shielding case (2) it is fixed, to group
At complete mutual inductor.
2. a kind of mutual inductor shielded using ultracrystallite punching, permalloy according to claim 1, it is characterised in that：
The fixed connection point of terminal is equipped in shell (3).
3. a kind of mutual inductor shielded using ultracrystallite punching, permalloy according to claim 1, it is characterised in that：
After the sub-assembly that the magnetic core (1), shielding case (2) form is put into shell (3), bullet is added between sub-assembly both sides and shell (3)
Piece.
4. a kind of mutual inductor shielded using ultracrystallite punching, permalloy according to claim 1, it is characterised in that：
Every piece of punching (4) is formed by stacking by polylith monolithic ultra micro chip, and the thickness of monolithic ultra micro chip is 30um.
5. a kind of production method of mutual inductor shielded using ultracrystallite punching, permalloy as described in claim 1, special
Sign is：The step of production method is：
1) it takes ten monolithic ultracrystallites to be superimposed up and down, and recruitment is clamping, annealing furnace tempering is put into, after taking-up, with height
Viscosity glue curing can become the ultra micro chip being superimposed, rushing for needs is then made with punching machine or with wire cutting after solidification
Piece shape, subsequent multi-disc punching recruitment folding, which is added together, to be clipped, double tempering, secondary to use glue curing, with rear end face sand
Paper is polished, and ensures that two panels punching pairing is opaque, and in the surface coated with resins coating of punching, after insulation in two punchings around
Coil simultaneously connects secondary terminals, and connects internal connection terminal and two pieces of magnetic cores are made；
2) the two pieces of shielding cases that can be split up and down in left and right, the monolithic shape of the two pieces of shielding cases in left and right is made with permalloy punching press
Consistent with magnetic core, size is more than magnetic core, and two pieces of magnetic cores are respectively put into the two pieces of shielding cases in left and right and form sub-assembly, left and right two
There are gaps for the centre of block shielding case, and shielding case is avoided to form short-circuited conducting sleeve；
3) the about two pieces shells being spliced are made, in shell in equipped with the place for being specially fixedly connected with terminal, magnetic core, shielding
The sub-assembly of cover composition is put into shell, and spring is added between sub-assembly and outer casing inner wall, ensures magnetic core and connector contact
Well, the fixation of shell is then completed into upper and lower two pieces of shell splits by hasp outside the shell, finally passes through ultrasonic wave
Complete mutual inductor has just been made in cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810411146.3A CN108320896A (en) | 2018-05-02 | 2018-05-02 | A kind of mutual inductor and production method using ultracrystallite punching, permalloy shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810411146.3A CN108320896A (en) | 2018-05-02 | 2018-05-02 | A kind of mutual inductor and production method using ultracrystallite punching, permalloy shielding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108320896A true CN108320896A (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810411146.3A Withdrawn CN108320896A (en) | 2018-05-02 | 2018-05-02 | A kind of mutual inductor and production method using ultracrystallite punching, permalloy shielding |
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| CN (1) | CN108320896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672916A (en) * | 2019-10-22 | 2020-01-10 | 绵阳市维博电子有限责任公司 | Open-type digital direct current measuring device |
| CN110672915A (en) * | 2019-10-22 | 2020-01-10 | 绵阳市维博电子有限责任公司 | Direct current measuring method based on open type structure |
| CN111740585A (en) * | 2020-06-04 | 2020-10-02 | 许继集团有限公司 | Electromagnetic interference preventing flexible direct current converter valve secondary board card and manufacturing method |
-
2018
- 2018-05-02 CN CN201810411146.3A patent/CN108320896A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672916A (en) * | 2019-10-22 | 2020-01-10 | 绵阳市维博电子有限责任公司 | Open-type digital direct current measuring device |
| CN110672915A (en) * | 2019-10-22 | 2020-01-10 | 绵阳市维博电子有限责任公司 | Direct current measuring method based on open type structure |
| CN111740585A (en) * | 2020-06-04 | 2020-10-02 | 许继集团有限公司 | Electromagnetic interference preventing flexible direct current converter valve secondary board card and manufacturing method |
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Application publication date: 20180724 |