CN214226668U - Ultralow-inductance large-current integrally-formed inductor - Google Patents
Ultralow-inductance large-current integrally-formed inductor Download PDFInfo
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- CN214226668U CN214226668U CN202022345565.7U CN202022345565U CN214226668U CN 214226668 U CN214226668 U CN 214226668U CN 202022345565 U CN202022345565 U CN 202022345565U CN 214226668 U CN214226668 U CN 214226668U
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- integrally formed
- conducting strip
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Abstract
The utility model discloses an ultralow sense heavy current integrated into one piece inductor, it is including adopting magnetic material integrated into one piece's airtight magnetic core casing and unsettled in its inside conducting strip, become the pin outside the magnetic core casing is drawn forth at the both ends of conducting strip. The utility model adopts the conducting strip to replace the coil wound by the prior thick wire, can realize the requirement of the ultra-low inductance and heavy current characteristic of the inductor, and has smaller deformation of the conducting strip and reduced cracking proportion in the process of adopting the magnetic core shell to be molded and integrally formed, thereby improving the product yield; additionally, the utility model discloses replace the coil with the conducting strip, saved the step of coil coiling in the conventional product manufacturing process, preparation simple process can improve production efficiency, is favorable to extensive volume production.
Description
Technical Field
The utility model relates to an integrated into one piece inductor, in particular to super low inductance heavy current integrated into one piece inductor.
Background
In the existing integrally formed inductor, the inductor with the inductance of less than 0.1 muH is usually produced by adopting a thick wire diameter flattening mode, and the defects are as follows: the inductor can not meet the requirement of product characteristics, and the coil is too thick and is easy to deform and crack during compression molding.
The chinese patent application CN111508694A discloses an ultra-low impedance hot press molding inductor, which uses a thick flat wire to realize ultra-low inductance and large current by horizontal winding, however, the preparation method has the disadvantages of difficult realization of ultra-low inductance, difficult winding of the coil, complex manufacturing process, and difficult large-scale mass production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can realize the super low heavy current of feeling, promote product yield, preparation simple process, improve production efficiency's super low heavy current integrated into one piece inductor.
The above object of the present invention is achieved by the following technical measures: the integrated inductor with ultralow inductance and large current is characterized by comprising a closed magnetic core shell integrally formed by magnetic materials and a conducting strip suspended in the closed magnetic core shell, wherein two ends of the conducting strip are led out of the magnetic core shell to form pins.
The utility model adopts the conducting strip to replace the coil wound by the prior thick wire, can realize the requirement of the ultra-low inductance and heavy current characteristic of the inductor, and has smaller deformation of the conducting strip and reduced cracking proportion in the process of adopting the magnetic core shell to be molded and integrally formed, thereby improving the product yield; additionally, the utility model discloses replace the coil with the conducting strip, saved the step of coil coiling in the conventional product manufacturing process, preparation simple process can improve production efficiency, is favorable to extensive volume production.
As an improvement of the utility model, the conducting strip adopts the metal material, and it is by sheet metal through punching press and lead frame integrated into one piece, the pin is a part of lead frame. The conducting strip directly forms the required terminal (namely the pin) through punching press, has saved steps such as spot welding in the manufacturing process of conventional product, further improves production efficiency.
As a preferred embodiment of the present invention, the conductive sheet is a copper sheet, the copper sheet is a U-shaped member horizontally placed, and the portion of the lead frame connected to the two arms of the copper sheet is a pair of pins.
Magnetic core casing mould pressing integrated into one piece specifically can adopt hot pressing or cold pressing mode.
As a preferred embodiment of the present invention, a recess is respectively established at two opposite edges of the bottom surface of the magnetic core casing, just a breach is respectively established to the relative both sides wall bottom of magnetic core casing, every breach and the recess intercommunication that corresponds, the pin is buckled downwards and is extended to in the recess via the breach.
The magnetic material of the utility model is amorphous, nanocrystalline or ferrite; the magnetic material is one or more than two of alloy powder cores such as iron-silicon powder core, iron-silicon-aluminum powder core, iron-silicon-chromium powder core and the like.
Compared with the prior art, the utility model discloses the effect that is showing as follows has:
the utility model discloses replace the coil of current thick wire material coiling with the conducting strip, can satisfy the demand of ultralow inductance volume heavy current.
Do a little the utility model discloses at magnetic core casing mould pressing in-process, the deflection of conducting strip is less, and the fracture proportion reduces, can promote the product yield.
The utility model discloses when keeping product characteristic advantage, the copper sheet material forms required terminal through direct punching press, has saved steps such as coil coiling, spot welding in the conventional product manufacturing process, obviously improves production efficiency, is favorable to extensive volume production.
Drawings
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the copper sheet and lead frame of the present invention;
fig. 3 is a schematic structural diagram of the magnetic core housing of the present invention formed integrally by die pressing.
Detailed Description
As shown in fig. 1-3, it is the utility model relates to an ultralow sense heavy current integrated into one piece inductor, it includes the airtight magnetic core casing 1 that adopts magnetic material mould pressing integrated into one piece and unsettled in its inside conducting strip, in this embodiment, magnetic core casing 1 is the oblate shell, and magnetic material is amorphous, nanocrystalline or ferrite, also can be one or more than two in the alloy powder cores such as iron silicon system powder core, iron silicon aluminium powder core and iron silicon chromium powder core. The mould pressing integral forming can adopt a hot pressing or cold pressing mode. The conducting strip adopts copper sheet 2, and the both ends of copper sheet 2 draw forth magnetic core casing 1 outside and become pin 3. The copper sheet 2 replaces the coil wound by the existing thick wire, the requirement of ultralow inductance and large current can be met, in the die pressing process, the deformation of the copper sheet 2 is small, the cracking proportion is reduced, and the product yield can be improved. The copper sheet 2 is formed integrally with the lead frame 4 by stamping a copper sheet material, and the leads 3 are a part of the lead frame 4. The copper sheet 2 is directly formed into a required terminal (namely a pin) through stamping, so that the steps of winding a coil, spot welding and the like in the manufacturing process of a conventional product are omitted, the production efficiency is obviously improved, and large-scale mass production is facilitated.
In this embodiment, the copper sheet 2 is a U-shaped member horizontally placed, and the portion of the lead frame 4 connected to the two arms of the copper sheet 2 is a pair of leads 3. The bottom surface of the magnetic core shell 1 is provided with a groove at two opposite edges, the bottom of two opposite side walls of the magnetic core shell 1 is provided with a notch 5, each notch 5 is communicated with the corresponding groove, and the pin 3 bends downwards and extends into the groove through the notch 5.
The utility model discloses a manufacture process as follows: the copper sheet is directly formed into a required shape by punching, and then is cleaned, plated with nickel on the surface layer and plated with tin to form a required integrally-formed terminal, which is shown in figure 2; forming the magnetic core shell in a mould pressing mode to obtain a semi-finished product of the inductor, and referring to fig. 3; and baking, cutting, forming electrodes and the like to obtain a finished inductor product, which is shown in figure 1.
The embodiment of the present invention is not limited to this, and according to the above-mentioned content of the present invention, according to the common technical knowledge and the conventional means in the field, the shape and size of the copper sheet terminal of the present invention can have various embodiments; the molding powder used by the magnetic core shell can be other different magnetic materials except amorphous, nanocrystalline, ferrite and magnetic powder cores; the integral molding method of the magnetic core shell can also adopt other molding modes except hot pressing and cold pressing. Therefore, the present invention can also make other modifications, replacements, or alterations in various forms, all falling within the scope of protection of the present invention.
Claims (8)
1. The utility model provides an ultralow big current integrated into one piece inductor that inducts which characterized in that: the magnetic core comprises a closed magnetic core shell integrally formed by magnetic materials and a conducting strip suspended in the closed magnetic core shell, wherein two ends of the conducting strip are led out of the magnetic core shell to form pins.
2. An ultra-low inductance high current integrally formed inductor according to claim 1, wherein: the conducting plate is made of metal and is integrally formed with the lead frame by stamping a metal sheet, and the pins are part of the lead frame.
3. An ultra-low inductance high current integrally formed inductor according to claim 2, wherein: the magnetic core shell is integrally formed by die pressing.
4. An ultra-low inductance high current integrally formed inductor according to claim 3, wherein: the magnetic core shell is integrally formed by hot pressing or cold pressing.
5. An ultralow-inductance and large-current integrally-formed inductor according to any one of claims 2 to 4, wherein: the conducting strip is a copper sheet, the copper sheet is a U-shaped piece which is horizontally placed, and the part of the lead frame, which is connected with the two arms of the copper sheet, is a pair of pins.
6. An ultra-low inductance high current integrally formed inductor according to claim 5, wherein: the bottom surface of the magnetic core shell is provided with two grooves at two opposite edges, a notch is arranged at the bottom of each of two opposite side walls of the magnetic core shell, each notch is communicated with the corresponding groove, and the pins are bent downwards and extend into the grooves through the notches.
7. An ultra-low inductance high current integrally formed inductor according to claim 6, wherein: the magnetic material is amorphous, nanocrystalline or ferrite.
8. An ultra-low inductance high current integrally formed inductor according to claim 6, wherein: the magnetic material is one of an iron-silicon powder core, an iron-silicon-aluminum powder core and an iron-silicon-chromium powder core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022345565.7U CN214226668U (en) | 2020-10-20 | 2020-10-20 | Ultralow-inductance large-current integrally-formed inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022345565.7U CN214226668U (en) | 2020-10-20 | 2020-10-20 | Ultralow-inductance large-current integrally-formed inductor |
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| Publication Number | Publication Date |
|---|---|
| CN214226668U true CN214226668U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022345565.7U Active CN214226668U (en) | 2020-10-20 | 2020-10-20 | Ultralow-inductance large-current integrally-formed inductor |
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| CN (1) | CN214226668U (en) |
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- 2020-10-20 CN CN202022345565.7U patent/CN214226668U/en active Active
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