CN111627648A - Choke coil and manufacturing method thereof - Google Patents

Choke coil and manufacturing method thereof Download PDF

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Publication number
CN111627648A
CN111627648A CN202010299110.8A CN202010299110A CN111627648A CN 111627648 A CN111627648 A CN 111627648A CN 202010299110 A CN202010299110 A CN 202010299110A CN 111627648 A CN111627648 A CN 111627648A
Authority
CN
China
Prior art keywords
core
electrode
winding coil
lead
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010299110.8A
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Chinese (zh)
Inventor
王楚威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUNSHAN XINYOULI AUTOMATION Co.,Ltd.
Original Assignee
Kunshan Aodier Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Aodier Intelligent Technology Co ltd filed Critical Kunshan Aodier Intelligent Technology Co ltd
Priority to CN202010299110.8A priority Critical patent/CN111627648A/en
Publication of CN111627648A publication Critical patent/CN111627648A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type
    • H01F17/04Fixed inductances of the signal type with magnetic core
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/255Magnetic cores made from particles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263Fastening parts of the core together
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • H01F27/292Surface mounted devices
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening or mounting coils or windings on core, casing or other support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus 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
    • H01F41/02Apparatus 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
    • H01F41/0206Manufacturing of magnetic cores by mechanical means
    • H01F41/0246Manufacturing of magnetic circuits by moulding or by pressing powder
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type
    • H01F17/04Fixed inductances of the signal type with magnetic core
    • H01F2017/048Fixed inductances of the signal type with magnetic core with encapsulating core, e.g. made of resin and magnetic powder

Abstract

The invention relates to a choke coil and a manufacturing method thereof, wherein the choke coil comprises a core body, a winding coil, a magnet, a first electrode and a second electrode, the core body comprises a base and a core column, the base is provided with a top surface and a bottom surface, the top surface and the bottom surface are opposite, one end of the core column is connected with the top surface, the winding coil is positioned on the periphery of the core column, the winding coil is provided with a first lead and a second lead, the first lead is connected with the first electrode, the second lead is connected with the second electrode, and the magnet covers the core column, the part of the base except the bottom surface and the winding coil. The invention has the beneficial effects that: the magnets occupy the core surface, enhance the effective permeability characteristics of the core, and the magnetic circuit conducts uniformly, core losses can be minimized, high saturation current under heavy loads, and low core losses under light loads.

Description

Choke coil and manufacturing method thereof
Technical Field
The present invention relates to a choke coil, and more particularly, to a choke coil and a method of manufacturing the same.
Background
Iron core inductors, also known as chokes, reactors or inductors, are widely used in electronic devices and are of a wide variety. Generally, the core inductor can be classified into a power filter choke, an ac choke (including an inductor), and a saturation choke, and the former two are used at most
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a choke coil and a manufacturing method thereof.
The invention is realized by the following technical scheme:
the utility model provides a choke, includes core, winding coil, magnet, first electrode and second electrode, the core includes base and core post, the base has top surface and bottom surface, top surface and bottom surface are relative, the top surface is connected to the one end of core post, base and core post body coupling, the winding coil is located the core post peripherally, the winding coil has first lead wire and second lead wire, first pin connection first electrode, second pin connection second electrode, the magnet covers core post, the base except that the bottom surface part and winding coil.
According to the above technical solution, preferably, the winding coil is a wound air core coil having a first lead and a second lead, and the winding coil is coaxially fixed to the periphery of the core column.
According to the above technical solution, preferably, the first electrode and the second electrode are both mounted on the bottom surface of the base.
According to the above technical solution, preferably, the base is provided with two grooves, and the first lead and the second lead pass through the grooves and connect the first electrode and the second electrode.
A manufacturing method of a choke coil, the choke coil comprising a core, a winding coil, a magnet, a first electrode and a second electrode, the core and the magnet each being made of a mixture of a non-magnetic material and a soft magnetic metal material;
the method comprises the following steps: the core body is arranged in the die at a speed of 30-50KG/mm2The pressure of (3) is pressed and formed;
step two: the winding coil is pre-wound, the winding coil is arranged on the core body, and a first lead and a second lead of the winding coil are respectively connected with a first electrode and a second electrode;
step three: covering the core column, the base except the bottom surface and the winding coil with a magnet, heating the magnet at 110-150 deg.C and adding 30-50KG/mm2And (5) pressing and molding to obtain a fixed shape.
According to the above technical solution, preferably, the soft magnetic metal material is composed of one or more alloy powders of Fe-Si, Fe-Cr-Si, and Fe-AL-Si, the non-magnetic material includes a resin and an additive, and the core body has a concentration of the soft magnetic metal material higher than that of the magnetic body.
According to the above technical scheme, preferably, the winding coil is wound into a hollow coil by a single-shaft or multi-shaft winding machine, the material of the winding coil is an insulating self-adhesive enameled copper wire, the cross-sectional shape of the winding coil comprises a flat wire or a round wire, the wound winding coil is assembled on a core body, a first lead and a second lead of the winding coil are bent in an opposite or parallel mode and are flatly attached to a base of the core body, and the first lead and the second lead are connected with a first electrode and a second electrode in a tin-dipping or tinning mode after the enamel is cleaned by laser.
The invention has the beneficial effects that: the magnets occupy the surface of the core and enhance the effective permeability characteristics of the core. And the magnetic circuit is uniformly conducted, the core loss can be minimized, there is a high saturation current under a heavy load, and there is a low core loss at a light load.
Drawings
Fig. 1 shows a schematic front view of an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a winding coil structure of an embodiment of the present invention.
FIG. 3 shows a schematic view of a T-core configuration of an embodiment of the present invention.
FIG. 4 shows a schematic of an E-core configuration of an embodiment of the present invention.
FIG. 5 shows a schematic of a U-shaped core configuration of an embodiment of the present invention.
Fig. 6 shows a schematic view of a racetrack core body configuration of an embodiment of the invention.
In the figure: 1. the magnetic core comprises a core body, 2 winding coils, 3 magnets, 4 first electrodes, 5 second electrodes, 6 a base, 7 core columns, 8 top surfaces, 9 bottom surfaces, 10 first leads, 11 second leads and 12 grooves.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in the drawings, the choke coil of the invention comprises a core body 1, a winding coil 2, a magnet 3, a first electrode 4 and a second electrode 5, wherein the core body comprises a base 6 and a core column 7, the base has a top surface 8 and a bottom surface 9, the top surface and the bottom surface are opposite, one end of the core column is connected with the top surface, the base is integrally connected with the core column, the winding coil is positioned at the periphery of the core column, the winding coil is provided with a first lead 10 and a second lead 11, the first lead is connected with the first electrode, the second lead is connected with the second electrode, and the magnet covers the core column, the base and the winding coil except the bottom surface.
The working principle of the embodiment is as follows: the core is a magnetic core, the core and the winding coil form a choke, a first lead and a second lead of the winding coil are connected with a first electrode and a second electrode, and the first electrode and the second electrode are made of metal materials and are convenient to connect with an external circuit. The magnet covers the body pillar, the base except the bottom surface and the winding coil, the magnet and the bottom surface of the base form a shell of the choke coil, and the magnet occupies the surface of the core to enhance the effective magnetic permeability of the core. And because the base is integrally connected with the core column, the magnetic circuit conduction is uniform, the core loss can be minimized, the core has high saturation current under heavy load, and the core has low core loss under light load.
According to the above embodiment, preferably, the winding coil is a wound air core coil having a first lead and a second lead, and the winding coil is coaxially fixed on the periphery of the core column.
According to the above embodiment, preferably, the first electrode and the second electrode are both mounted on the bottom surface of the base.
According to the above embodiment, preferably, the base is provided with two grooves 12, and the first and second leads pass through the grooves and connect the first and second electrodes.
The shape of the core includes: e-shaped, T-shaped, cylindrical, conical, U-shaped and runway-shaped.
A manufacturing method of a choke coil, the choke coil comprising a core, a winding coil, a magnet, a first electrode and a second electrode, the core and the magnet each being made of a mixture of a non-magnetic material and a soft magnetic metal material;
the method comprises the following steps: the core body is arranged in the die at a speed of 30-50KG/mm2The pressure of (3) is pressed and formed;
step two: the winding coil is pre-wound, the winding coil is arranged on the core body, and a first lead and a second lead of the winding coil are respectively connected with a first electrode and a second electrode;
step three: covering the core column, the base except the bottom surface and the winding coil with a magnet, heating the magnet at 110-150 deg.C and adding 30-50KG/mm2And (5) pressing and molding to obtain a fixed shape.
The magnet is heated and pressurized through a specific mould, so that the electrode and the coil of the base are prevented from being damaged.
According to the above technical solution, preferably, the soft magnetic metal material is composed of one or more alloy powders of Fe-Si, Fe-Cr-Si, and Fe-AL-Si, the non-magnetic material includes a resin and an additive, and the core body has a concentration of the soft magnetic metal material higher than that of the magnetic body.
According to the above technical scheme, preferably, the winding coil is wound into a hollow coil by a single-shaft or multi-shaft winding machine, the material of the winding coil is an insulating self-adhesive enameled copper wire, the cross-sectional shape of the winding coil comprises a flat wire or a round wire, the wound winding coil is assembled on a core body, a first lead and a second lead of the winding coil are bent in an opposite or parallel mode and are flatly attached to a base of the core body, and the first lead and the second lead are connected with a first electrode and a second electrode in a tin-dipping or tinning mode after the enamel is cleaned by laser.
The invention has the beneficial effects that:
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A choke, characterized by: including core, winding coil, magnet, first electrode and second electrode, the core includes base and core post, the base has top surface and bottom surface, top surface and bottom surface are relative, the top surface is connected to the one end of core post, base and core post body coupling, the winding coil is located the core post peripherally, the winding coil has first lead wire and second lead wire, first pin connection first electrode, the second pin connection second electrode, the magnet covers core post, the base except that the bottom surface part and the winding coil.
2. A choke in accordance with claim 1, wherein: the winding coil is a wound air core coil with a first lead and a second lead, and the winding coil is coaxially fixed on the periphery of the core column.
3. A choke in accordance with claim 1, wherein: the first electrode and the second electrode are both arranged on the bottom surface of the base.
4. A choke in accordance with claim 1, wherein: the base is provided with two grooves, and the first lead and the second lead penetrate through the grooves and are connected with the first electrode and the second electrode.
5. A method of manufacturing a choke coil, comprising: the choke coil comprises a core, a winding coil, a magnet, a first electrode and a second electrode, wherein the core and the magnet are both made of a mixture of a non-magnetic material and a soft magnetic metal material;
the method comprises the following steps: the core body is arranged in the die at a speed of 30-50KG/mm2The pressure of (3) is pressed and formed;
step two: the winding coil is pre-wound, the winding coil is arranged on the core body, and a first lead and a second lead of the winding coil are respectively connected with a first electrode and a second electrode;
step three: covering the core column, the base except the bottom surface and the winding coil with a magnet, heating the magnet at 110-150 deg.C and adding 30-50KG/mm2And (5) pressing and molding to obtain a fixed shape.
6. A manufacturing method of a choke coil according to claim 5, characterized in that: the soft magnetic metal material is composed of one or more alloy powders of Fe-Si, Fe-Cr-Si and Fe-AL-Si, the non-magnetic material comprises resin and additive, and the concentration of the soft magnetic metal material of the core body is higher than that of the soft magnetic metal material of the magnet.
7. A manufacturing method of a choke coil according to claim 5, characterized in that: the winding coil is the hollow coil by unipolar or multiaxis coiling machine coiling, the material of winding coil is insulating self-adhesion enameled copper line, the cross sectional shape of winding coil includes flat wire or round wire, and the winding coil after the coiling is assembled on the core, and the first lead wire and the second lead wire of winding coil buckle with subtend or parallel mode and tie in the core base, and first lead wire and second lead wire are with laser clearance enamel back be stained with tin or tin-plating connect first electrode and second electrode.
CN202010299110.8A 2020-04-16 2020-04-16 Choke coil and manufacturing method thereof Pending CN111627648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010299110.8A CN111627648A (en) 2020-04-16 2020-04-16 Choke coil and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010299110.8A CN111627648A (en) 2020-04-16 2020-04-16 Choke coil and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN111627648A true CN111627648A (en) 2020-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010299110.8A Pending CN111627648A (en) 2020-04-16 2020-04-16 Choke coil and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN111627648A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178312A (en) * 2021-03-27 2021-07-27 蚌埠市双环电感股份有限公司 Integrated into one piece inductance that direct current superposition characteristic is high
CN114068152A (en) * 2021-12-14 2022-02-18 苏州邦鼎新材料有限公司 High-performance high-quality integrated inductance element structure and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178312A (en) * 2021-03-27 2021-07-27 蚌埠市双环电感股份有限公司 Integrated into one piece inductance that direct current superposition characteristic is high
CN114068152A (en) * 2021-12-14 2022-02-18 苏州邦鼎新材料有限公司 High-performance high-quality integrated inductance element structure and manufacturing method thereof

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PB01 Publication
PB01 Publication
TA01 Transfer of patent application right

Effective date of registration: 20201030

Address after: Room 15, 367-15 Youbi Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province

Applicant after: KUNSHAN XINYOULI AUTOMATION Co.,Ltd.

Address before: Room 209, Building A1, 756 Kuntai Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province

Applicant before: KUNSHAN AODIER INTELLIGENT TECHNOLOGY Co.,Ltd.

TA01 Transfer of patent application right