CN218957523U

CN218957523U - Skeleton-free small-sized high-current inductor

Info

Publication number: CN218957523U
Application number: CN202320026088.9U
Authority: CN
Inventors: 刘小龙; 张显
Original assignee: Dongguan Jianyangda Electronics Technology Co ltd
Current assignee: Dongguan Jianyangda Electronics Technology Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-02
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a small-sized large-current inductor without a framework, which relates to the field of inductor design and comprises a film covered wire and two magnetic cores, wherein the film covered wire is wound between the two magnetic cores and forms a coil arrangement; both ends of the membrane covered wire are electrically connected with round terminals; the film covered wire comprises a copper wire, a NOMEX insulating film and a KAPTON adhesive tape, wherein the NOMEX insulating film is arranged on the outer side of the copper wire in a covering mode, and the KAPTON adhesive tape is arranged on the outer side of the NOMEX insulating film in a covering mode; the two magnetic cores are stuck and fixed through high-temperature epoxy glue, and the coil is stuck and fixed between the two magnetic cores through high-temperature epoxy glue; the beneficial effects are that: the product has no skeleton design, utilizes high temperature epoxy to glue and provides fixedly for the coil, guarantees the stable installation of coil in two magnetic rings, and high temperature epoxy can replace the function of skeleton, can reduce the volume of inductance.

Description

Skeleton-free small-sized high-current inductor

Technical Field

The utility model relates to the field of inductor design, in particular to a small-sized high-current inductor without a framework.

Background

Inductance is a property of a closed loop and is a physical quantity. When current passes through the coil, a magnetic field is induced in the coil, which in turn generates an induced current that resists the current passing through the coil. It is a circuit parameter describing the effect of induced electromotive force induced in the present coil or in another coil due to a change in coil current. Inductance is a generic term for self inductance and mutual inductance. Devices that provide inductance are referred to as inductors.

In Chinese patent (publication No. CN 211578522U, publication No. 2020.09.25) an inductor fixing base and an inductor with the same are disclosed, wherein the inductor structure is formed by winding copper wires on a framework and then forming an inductor element through an outer magnetic ring, the structure of the framework cannot be directly removed by the inductor structure on the market, the requirements of large current and large power are difficult to be met, the inductor is generally installed by wiring through PIN needles, the inductor is difficult to detach and replace after welding, and the inductor is inconvenient to use.

Disclosure of Invention

The utility model provides a technical scheme capable of solving the problems in order to overcome the defects of the prior art.

The small-sized high-current inductor without the framework comprises a film covered wire and two magnetic cores, wherein the film covered wire is wound between the two magnetic cores and forms a coil arrangement;

the two ends of the film covered wire are respectively provided with the magnetic core, and the two ends of the film covered wire are respectively and electrically connected with the round terminals;

the film covered wire comprises a copper wire, a NOMEX insulating film and a KAPTON adhesive tape, wherein the NOMEX insulating film is arranged on the outer side of the copper wire in a covering mode, and the KAPTON adhesive tape is arranged on the outer side of the NOMEX insulating film in a covering mode;

the two magnetic cores are stuck and fixed through high-temperature epoxy glue, and the coil is stuck and fixed between the two magnetic cores through the high-temperature epoxy glue.

As a further scheme of the utility model: the high-temperature magnetic tape is characterized in that KAPTON films are respectively mounted on the upper side and the lower side of the coil in a pasting mode, a high-temperature adhesive tape is mounted on the outer ring of the coil in a wrapping mode, and the coil is mutually separated from the two magnetic cores through the KAPTON films and the high-temperature adhesive tape.

As a further scheme of the utility model: the number of turns of the NOMEX insulating film coated on the outer side of the copper wire is 1TS, and the number of turns of the KAPTON adhesive tape coated on the outer side of the NOMEX insulating film is 2TS.

As a further scheme of the utility model: the thermal shrinkage sleeve is sleeved at the joint between the round terminal and the film covered wire, and the round terminal is made of galvanized copper.

As a further scheme of the utility model: the film-covered wire is wound between the two magnetic cores in a clockwise direction to form the coil.

As a further scheme of the utility model: the winding circle number of the coil is 18TS, and the specification of the film-covered wire is phi 0.10 x 120P.

As a further scheme of the utility model: the copper wire adopts a 2UEW enameled wire.

As a further scheme of the utility model: and the high-temperature epoxy glue adopts G500 glue.

As a further scheme of the utility model: the middle parts of the two magnetic cores are respectively provided with a center pillar, the film covered wire is wound on the center pillar of the magnetic core, and an air GAP is formed by grinding GAP at the end parts of the center pillars.

As a further scheme of the utility model: the core adopts RM10 magnetic core, the material of magnetic core is GP95.

Compared with the prior art, the utility model has the beneficial effects that:

1. the product has no skeleton design, the whole volume can be reduced, the high-temperature epoxy glue is used for fixing the coil, the stable installation of the coil in the two magnetic rings is ensured, the high-temperature epoxy glue can replace the skeleton function, and the effect of reducing the inductance volume is realized;

2. the arrangement of the film covered wire is that the NOMEX insulating film and the KAPTON adhesive tape are covered on the outer side of the copper wire, so that the effect of mutual isolation between the film covered wire and the magnetic core can be achieved, and the stable operation of the inductance device is ensured;

3. the circular terminal is arranged to facilitate the wiring installation of the inductance device, can be assembled on the contact through a screw, and is convenient for installation and disassembly;

4. the high-temperature epoxy adhesive can bear high temperature without damage, so that the inductance device can be suitable for places with high current and high power.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic side elevational view of the present utility model;

FIG. 4 is a schematic cross-sectional structure of a membrane covered wire;

fig. 5 is a schematic diagram of the structure of two cores.

The figure shows: 1. film covered wire; 1-1, copper wire; 1-2, NOMEX insulating film; 1-3, KAPTON tape; 2. a magnetic core; 3. a coil; 4. a circular terminal; 5. high-temperature epoxy glue; 6. KAPTON film; 7. high temperature adhesive tape; 8. a heat-shrinkable sleeve; 9. a center column; 10. an air gap.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-5, the skeleton-free small-sized high-current inductor comprises a film covered wire 1 and two magnetic cores 2, wherein the film covered wire 1 is wound between the two magnetic cores 2 and is arranged to form a coil 3;

the two ends of the film covered wire 1 are respectively provided with the magnetic core 2, and the two ends of the film covered wire 1 are respectively and electrically connected with the circular terminal 4;

the film covered wire 1 comprises a copper wire 1-1, a NOMEX insulating film 1-2 and a KAPTON adhesive tape 1-3, wherein the NOMEX insulating film 1-2 is arranged on the outer side of the copper wire 1-1 in a covering mode, and the KAPTON adhesive tape 1-3 is arranged on the outer side of the NOMEX insulating film 1-2 in a covering mode;

the two magnetic cores 2 are fixed by being stuck through high-temperature epoxy glue 5, and the coil 3 is fixed between the two magnetic cores 2 by being stuck through the high-temperature epoxy glue 5;

the principle is as follows: the product has no skeleton design, can reduce holistic volume, utilize high temperature epoxy glue 5 to provide fixedly for coil 3, guarantee the stable installation of coil 3 in two magnetic rings 2, high temperature epoxy glue 5 can replace the function of skeleton, realize reducing inductance volume's effect, in addition, the setting of membrane covered wire 1 is in copper line 1-1's outside cladding NOMEX insulating film 1-2 and KAPTON sticky tape 1-3, can play the effect of keeping apart each other with magnetic core 2, circular terminal 4's setting can be convenient in inductance device's wiring installation, accessible screw equipment is to the contact, be convenient for install and dismantle, high temperature epoxy glue 5 can bear the high temperature and do not take place to damage, let inductance device can be applicable to heavy current and high-power production.

As a further scheme of the utility model: KAPTON films 6 are respectively attached to the upper side and the lower side of the coil 3, a high-temperature adhesive tape 7 is wrapped and installed at the outer ring of the coil 3, and the coil 3 is mutually separated from the two magnetic cores 2 through the KAPTON films 6 and the high-temperature adhesive tape 7; the coil 3 and the two magnetic cores 2 can be completely separated, so that the operation of the inductance device is more stable.

As a further scheme of the utility model: the number of turns of the NOMEX insulating film 1-2 coated on the outer side of the copper wire 1-1 is 1TS, and the number of turns of the KAPTON adhesive tape 1-3 coated on the outer side of the NOMEX insulating film 1-2 is 2TS.

As a further scheme of the utility model: a heat shrinkage sleeve 8 is sleeved at the joint between the round terminal 4 and the film covered wire 1, and the round terminal 4 is made of galvanized copper; after the heat shrinkage sleeve 8 is sleeved, the heat shrinkage sleeve 8 is required to be heated to shrink, so that protection is provided for the round terminal 4 and the covered wire 1, and poor contact of welding parts of the round terminal 4 and the covered wire 1 can be avoided.

As a further scheme of the utility model: the film-covered wire 1 is wound between the two magnetic cores 2 in the clockwise direction to form the coil 3.

As a further scheme of the utility model: the number of windings of the coil 3 is 18TS, and the specification of the film covered wire 1 is Φ0.10x120p.

As a further scheme of the utility model: the copper wire 1-1 adopts a 2UEW enameled wire.

As a further scheme of the utility model: and the high-temperature epoxy glue 5 is G500 glue.

As a further scheme of the utility model: the middle parts of the two magnetic cores 2 are respectively provided with a middle column 9, the film covered wire 1 is wound on the middle columns 9 of the magnetic cores 2, and an air GAP 10 is formed by grinding GAP at the end parts of the middle columns 9; the provision of the air gap 10 prevents saturation of the inductive device.

As a further scheme of the utility model: the core 2 adopts RM10 magnetic core, the material of core 2 is GP95.

The present embodiment is not limited in any way by the shape, material, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the scope of protection of the technical solution of the present utility model.

Claims

1. The small-size heavy current inductance of no skeleton formula, its characterized in that: the film-covered wire is wound between the two magnetic cores and forms a coil arrangement;

2. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the high-temperature magnetic tape is characterized in that KAPTON films are respectively mounted on the upper side and the lower side of the coil in a pasting mode, a high-temperature adhesive tape is mounted on the outer ring of the coil in a wrapping mode, and the coil is mutually separated from the two magnetic cores through the KAPTON films and the high-temperature adhesive tape.

3. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the number of turns of the NOMEX insulating film coated on the outer side of the copper wire is 1TS, and the number of turns of the KAPTON adhesive tape coated on the outer side of the NOMEX insulating film is 2TS.

4. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the thermal shrinkage sleeve is sleeved at the joint between the round terminal and the film covered wire, and the round terminal is made of galvanized copper.

5. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the film-covered wire is wound between the two magnetic cores in a clockwise direction to form the coil.

6. The skeleton-free small-sized high-current inductor according to any one of claims 1 or 5, wherein: the winding circle number of the coil is 18TS, and the specification of the film-covered wire is phi 0.10 x 120P.

7. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the copper wire adopts a 2UEW enameled wire.

8. The skeleton-free small-sized high-current inductor according to claim 1, wherein: and the high-temperature epoxy glue adopts G500 glue.

9. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the middle parts of the two magnetic cores are respectively provided with a center pillar, the film covered wire is wound on the center pillar of the magnetic core, and an air GAP is formed by grinding GAP at the end parts of the center pillars.

10. The skeleton-free small-sized high-current inductor according to claim 1, wherein: the core adopts RM10 magnetic core, the material of magnetic core is GP95.