CN220651774U

CN220651774U - Magnetic element

Info

Publication number: CN220651774U
Application number: CN202322169660.XU
Authority: CN
Inventors: 肖明华; 刘凯川
Original assignee: Dongguan Mentech Optical and Magnetic Co Ltd
Current assignee: Dongguan Mentech Optical and Magnetic Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-03-22
Anticipated expiration: 2033-08-11

Abstract

The utility model belongs to the technical field of transformer structures, and particularly relates to a magnetic element, which comprises a shell, an inductor and a transformer, wherein the shell comprises a first shell for placing the inductor, a second shell for placing the transformer and a partition plate; the first casing is connected with the second casing, and the baffle sets up the junction at first casing and second casing, is connected with the setting element that is used for the location inductance on the baffle, is provided with sunken position and two piece at least spacing archs between second casing and the transformer, is connected with the welding leg on the transformer, is provided with the through-hole on the second casing, and the welding leg runs through the through-hole and extends the through-hole.

Description

Magnetic element

Technical Field

The utility model belongs to the technical field of transformer structures, and particularly relates to a magnetic element.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The magnetic element is used as an important component of the vehicle-mounted charger of the electric automobile, and as the requirements of the market on power transmission are increased, the volume requirements on the magnetic element are smaller, and the installation mode and the welding mode of the magnetic element are simpler. The magnetic element at least comprises an inductor and a transformer so as to realize the purpose of multiplexing output; however, this will cause the volume of the vehicle-mounted charger to be large, the manufacturing cost will be higher as the volume is larger, the heat generation/radiation ratio is increased as the volume is increased, and the heat radiation performance of the magnetic component is deteriorated, so that the power density of the magnetic component is reduced, the influence of electromagnetic interference generated by the magnetic component on other circuits is more serious, and meanwhile, the installation and welding of the large-volume magnetic component are more difficult.

Disclosure of Invention

In order to solve the above problems, the present utility model provides a magnetic element, which integrates a resonant inductor and a DC/DC transformer, saves space and cost, and improves ventilation and heat dissipation properties of the magnetic element.

According to some embodiments, the present utility model provides a magnetic element, which adopts the following technical scheme:

a magnetic element comprising a housing, an inductor and a transformer, the housing comprising a first housing for placing the inductor, a second housing for placing the transformer and a separator; the transformer comprises a first shell, a second shell, a partition plate, a positioning piece, a concave position and at least two limiting protrusions, wherein the first shell is connected with the second shell, the partition plate is arranged at the joint of the first shell and the second shell, the partition plate is connected with the positioning piece for positioning the inductor, the concave position and the at least two limiting protrusions are arranged between the second shell and the transformer, welding legs are connected to the transformer, through holes are formed in the second shell, and the welding legs penetrate through the through holes and extend out of the through holes.

As a further technical definition, the transformer comprises a first magnetic core and a first coil respectively wound on the first magnetic core, wherein the first magnetic core comprises two oppositely spliced U-shaped magnetic cores.

Further, the first coil is a flat wire.

Further, an insulating isolation material is arranged between the first magnetic core and the flat wire.

Further, the transformer further comprises a metal power strip, the first coil and the two first magnetic cores are located in the metal power strip, one end of the welding leg is connected with the metal power strip, and the welding leg is located between the two first magnetic cores.

As a further technical limitation, the inductor includes a second magnetic core and a second coil wound on the second magnetic core, and the second magnetic core adopts a circular magnetic core.

As a further technical limitation, the two side surfaces of the partition plate are provided with reinforcing ribs.

As a further technical definition, the limiting protrusion is connected to the inside of the first housing, and the top of the limiting protrusion abuts against the bottom of the first magnetic core.

Further, the locating piece is a locating column, the locating column is in a round table shape, and the radius is gradually increased from one end far away from the partition plate to the connecting position.

As a further technical definition, the first shell is provided with a dispensing position, and the dispensing position is located below the inductor.

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

the product of the utility model is highly integrated, integrates the resonant inductor and the DC/DC transformer, saves space and saves cost; the magnetic element is made into an air core coil structure, a certain gap is formed between the coil and the magnetic core, ventilation and heat dissipation are facilitated, and the structure is superior to the structure directly wound on the magnetic core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic diagram of a magnetic element in an embodiment of the utility model;

FIG. 2 is an exploded view of a magnetic element in an embodiment of the utility model;

FIG. 3 is a schematic view of the location of a positioning post according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the position of the limit bump in an embodiment of the present utility model;

FIG. 5 is a schematic diagram showing the position of a concave portion in an embodiment of the present utility model;

wherein, 1, U-shaped magnetic core, 2, metal power strip, 3, limited block, 4, flat wire, 5, shell, 6, round magnetic core, 7, a concave position, 8, a positioning column, 9, a reinforcing rib, 10, a baffle plate, 11, welding legs, 12 and a limiting bulge.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. refer to an orientation or a positional relationship based on that shown in the drawings, and are merely relational terms, which are used for convenience in describing structural relationships of various components or elements of the present utility model, and do not denote any one of the components or elements of the present utility model, and are not to be construed as limiting the present utility model.

In the present utility model, terms such as "fixedly attached," "connected," "coupled," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present utility model can be determined according to circumstances by a person skilled in the relevant art or the art, and is not to be construed as limiting the present utility model.

Examples

This embodiment describes a magnetic element.

A magnetic element as shown in fig. 1, 2, 3, 4 and 5, comprising a housing 5, an inductor and a transformer; wherein the housing 5 comprises a first housing for placing an inductor, a second housing for placing a transformer and a partition plate; the first casing is connected with the second casing, and the baffle sets up the junction at first casing and second casing, is connected with the setting element that is used for the location inductance on the baffle, is provided with sunken position and two piece at least spacing archs between second casing and the transformer, is connected with leg 11 on the transformer, is provided with the through-hole on the second casing, and leg 11 runs through the through-hole and extends the through-hole.

The transformer comprises a first magnetic core and a first coil wound on the first magnetic core respectively, wherein the first magnetic core comprises two U-shaped magnetic cores 1 which are spliced oppositely; the inductor comprises a second magnetic core and a second coil wound on the second magnetic core, and the second magnetic core adopts a round magnetic core 6.

In this embodiment, the first magnetic core adopts a square magnetic core, and the square magnetic core includes two U-shaped magnetic cores 1; the second magnetic core adopts a round magnetic core 6; in other embodiments, the second magnetic core may take the form of a square magnetic core that is identical to the first magnetic core structure.

As one or more embodiments, a partition board 10 is arranged between the U-shaped magnetic core 1 and the circular magnetic core 6, wherein the height of the partition board 10 is larger than that of the U-shaped magnetic core 1 and the circular magnetic core 6, a reinforcing rib 9 is arranged on the partition board 10 close to the side of the circular magnetic core 6, the partition board 10 is connected with the circular magnetic core 6 through a positioning column 8, and a plurality of concave positions 7 and limiting protrusions 12 are arranged on one side of the shell 5 close to the side of the U-shaped magnetic core 1.

In the present embodiment, the recessed portion 7 is provided on the housing 5 near the U-shaped magnetic core 1 and the circular magnetic core 6 for preventing deformation of the housing 5; in other embodiments, the housing 5 near the circular core 6 may not have the recess 7 because the contact surface between the circular core 6 and the housing 5 is smaller.

The center of the partition board 10 is provided with a positioning column 8, and the positioning column 8 in the embodiment is in a round table shape, wherein one end of the round table shape with a larger diameter is connected with the partition board 10, so that the round magnetic core 6 is not easy to move; the inductance of the resonant magnetic ring beside (the wire is wound on the outer surface of the round magnetic core 6) is fixed on the positioning column 8, and is separated from the transformer by the partition board 10, so that the magnetic field and heat are isolated, and the heat superposition and magnetic field interference of the inductance and the transformer are reduced.

As one or more embodiments, the U-shaped magnetic core 1 is wound with a flat wire 4 to reduce the occupied volume; an insulating isolation material is arranged between the U-shaped magnetic core 1 and the flat wire 4.

In this embodiment, an insulating tape is used as the insulating spacer; in other embodiments, other materials may be used for the insulating spacer material.

As one or more embodiments, the metal strip 2 is disposed on the outer side of the U-shaped magnetic cores 1, the terminal of the metal strip 2 between the two U-shaped magnetic cores 1 is provided with a solder leg 11, and the solder leg 11 passes through a through hole provided on the housing 5 to be connected with other circuit elements.

As one or more embodiments, at least two limiting blocks 3 are provided, and a circular magnetic core 6 is arranged between the two limiting blocks 3; meanwhile, glue for limiting point glue is smeared on the shell 5 between the limiting blocks 3, and the round magnetic core 6 is fully isolated from other circuit elements.

In this embodiment, a through hole for threading and limiting dispensing is provided at the bottom of the housing 5.

As one or more embodiments, the limit protrusions 12 are disposed near four corners of the housing 5 of the U-shaped magnetic core 1, and the limit protrusions 12 are disposed at least four; each U-shaped magnetic core 1 is arranged between the limiting protrusions 12, and the positioning of the U-shaped magnetic cores 1 is carried out through the limiting protrusions 12; meanwhile, the limiting protrusions 12 can also serve as supporting points, so that gaps are reserved between the U-shaped magnetic core 1 and the shell 5, and the possibility of tilting is reduced.

The product of the utility model is highly integrated, high-density integrated with the resonant inductor, the vehicle-mounted charger transformer and the DC/DC transformer, thereby saving space and cost; the magnetic element is made into an air core coil structure, a certain gap is formed between the coil and the magnetic core, ventilation and heat dissipation are facilitated, and the structure is superior to the structure directly wound on the magnetic core.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims

1. A magnetic element, which is characterized by comprising a shell, an inductor and a transformer, wherein the shell comprises a first shell used for placing the inductor, a second shell used for placing the transformer and a baffle plate; the first casing is connected with the second casing, and the baffle sets up the junction at first casing and second casing, is connected with the setting element that is used for the location inductance on the baffle, is provided with sunken position and two piece at least spacing archs between second casing and the transformer, is connected with the welding leg on the transformer, is provided with the through-hole on the second casing, and the welding leg runs through the through-hole and extends the through-hole.

2. A magnetic component as in claim 1 wherein the transformer comprises a first core and a first coil wound around the first core, the first core comprising two oppositely spliced U-shaped cores.

3. A magnetic element as claimed in claim 2, characterized in that the first coil is a flat wire.

4. A magnetic component as in claim 3, wherein an insulating spacer material is disposed between the first core and the flat wire.

5. The magnetic component of claim 2, wherein the transformer further comprises a metal strip, the first coil and the two first cores are positioned in the metal strip, and one end of the leg is connected to the metal strip and positioned between the two first cores.

6. A magnetic component as in claim 1 wherein the inductor comprises a second core and a second coil wound around the second core, the second core being a round core.

7. A magnetic element as claimed in claim 1, wherein the spacer is provided with reinforcing ribs on both side surfaces.

8. A magnetic component as in claim 1 wherein the spacing protrusion is connected to the interior of the first housing, the top of the spacing protrusion abutting the bottom of the first core.

9. A magnetic component as claimed in claim 8, wherein the positioning member is a positioning post, the positioning post is in the shape of a circular truncated cone, and the radius increases gradually from the end far from the partition plate to the connection point.

10. The magnetic element of claim 1 wherein the first housing is provided with a dispensing location, the dispensing location being located below the inductor.