Coil with variable inner diameter and electronic module made from the coil

Abstract

A coil with variable inner diameter is disclosed. The coil includes a coil body consisting of a plurality of turns of winding, and a connecting terminal configured to be connected to an external device, wherein the winding is wound to form at least two different inner diameters. And an electronic module made from the coil with variable inner diameter is also disclosed. The electronic module includes: electronic components including at least an integrated circuit chip; a coil with variable inner diameter, including a coil body having at least two different inner diameters and a connecting terminal; a connector, configured to be electrically connected with the electronic component and the coil; and a magnetic conductor, configured to enclose in and around the coil body and the electronic component.

Claims

1. A coil with a variable inner diameter, comprising: a coil body including first and second turns of winding disposed on or adjacent to one another and respectively forming first and second inner diameters, wherein a central axis of the first turn of winding extends through the second turn of winding and the first and second turns of winding are partially overlapped in a direction of the central axis; and a connecting terminal configured to be connected to an external device.

2. The coil of claim 1, wherein the first and second turns of winding are formed by a flat wire or a round wire.

3. The coil of claim 1, wherein at least one of the first and second turns of winding has a round, square, polygonal or oval shape.

4. An electronic module, comprising: an electronic component including an integrated circuit chip; a coil having a variable inner diameter, the coil including: a coil body including first and second turns of winding disposed on or adjacent to one another and respectively forming first and second inner diameters, wherein a central axis of the first turn of winding extends through the second turn of winding and the first and second turns of winding are partially overlapped in a direction of the central axis; and a connecting terminal; a connector configured to be electrically connected with the electronic component and the coil; and a magnetic conductor configured to enclose the coil body and the electronic component.

5. The electronic module of claim 4, wherein the electronic component further includes at least one of a resistance and a capacitance.

6. The electronic module of claim 4, wherein the first and second turns of winding are formed by a flat wire or a round wire.

7. The electronic module of claim 4, wherein at least one of the first and second turns of winding has a round, square, polygonal or oval shape.

8. The electronic module of claim 4, wherein the connector is a printed circuit board or a lead frame.

9. The electronic module of claim 8, wherein the connector further includes a terminal configured to be connected to an external device.

10. The electronic module of claim 4, wherein the magnetic conductor is made from magnetic powder by an encapsulating approach.

11. The electronic module of claim 10, wherein the encapsulating approach is molding or potting.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram illustrating a coil in the prior art.

(2) FIG. 2 is a schematic diagram illustrating a coil according to one embodiment of the present disclosure.

(3) FIG. 3 is a schematic diagram illustrating an electronic module made from the coil according to one embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

(4) The present disclosure may be best understood by reference to the following description taken in conjunction with embodiments and reference to the accompanying drawings.

(5) According to an aspect of the present disclosure, a coil with variable inner diameter is provided. As shown in FIG. 2, in one embodiment of the present disclosure, the coil with variable inner diameter includes a coil body consisting of a plurality of turns of winding, and a connecting terminal configured to be connected to an external device, where the coil is formed with at least two different inner diameters.

(6) Wherein, the winding can be formed by a flat wire or a round wire.

(7) Wherein, the inner diameter of the winding has a round, square, polygonal, oval shape or other shape.

(8) In this way, for a product to be designed in a special shape, the coil with variable inner diameter can either meet design requirements on a product in special shape or optimize the volume occupied by the product. Meanwhile, the coil with variable inner diameter can easily meet electronic products upgrades, and reduce the waste of coils and other materials, to reduce production cost.

(9) According to another aspect of the present disclosure, it also provides an electronic module made from the coil with variable inner diameter. As shown in FIG. 3, in one embodiment of the present disclosure, the integrated circuit chip is a unit module integrated a MOSFET, a drive circuit, a pulse width modulator and a controller. One advantage of such configuration is to fully utilize the space available and give largest possible space for magnetic components, such as inductor and transformer.

(10) In another embodiment of the present disclosure, the electronic components also includes a resistance, a capacitance or other electronic components.

(11) The coil with variable inner diameter includes a coil body including at least two different inner diameters and a connecting terminal.

(12) Wherein, the winding can be a flat wire, a round wire or a wire in other shapes.

(13) Wherein, the shape of the inner diameter can be round, square, polygonal, oval or other shapes.

(14) The connector is electrically connected with the electronic components and the coil with variable inner diameter.

(15) Optionally, the connector can be a printed circuit board or a lead frame.

(16) In another embodiment of the present disclosure, the connector also includes a terminal configured to be connected with an external device.

(17) The magnetic conductor is configured to enclose in and around the coil body and the electronic component, and can be used as a magnetic core of the coil.

(18) In one embodiment of the present disclosure, the magnetic conductor is formed from magnetic powder by an encapsulating approach, and the encapsulating approach can be molding or potting.

(19) With the above electronic module made from the coil with variable inner diameter, requirements for designing various special products and upgrading the coil device can be better handled, so as to greatly broaden the coil market, and to reduce the waste of coils and other materials and production cost.

(20) The embodiments are chosen and described in order to explain the principles of the disclosure and their practical application so as to activate others skilled in the art to utilize the disclosure and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present disclosure pertains without departing from its spirit and scope.