CN212258916U

CN212258916U - Compact integrated filter

Info

Publication number: CN212258916U
Application number: CN202020836072.0U
Authority: CN
Inventors: 张玉海; 王刚
Original assignee: Green Century Technology Co ltd
Current assignee: Beijing Electromagnetic Measurement Technology Co.,Ltd.
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-29
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a compact integration wave filter, including the plastic part, pre-buried in the plastic part has the copper bar, the copper bar runs through the first end of plastic part and the second end relative with the first end, the first end and the second end of plastic part are provided with first inductance and second inductance respectively, be provided with electric capacity between the first end and the second end of plastic part. The utility model discloses simple to operate, save space, solved the inconvenient problem of traditional wave filter installation, the ferrite inductance adopts EE type open design, the installation of being convenient for, the suppression of differential mode and common mode is compromise to the difference mode of difference mode and common mode an organic whole.

Description

Compact integrated filter

Technical Field

The utility model relates to a wave filter field particularly, relates to a compact integration wave filter.

Background

Most filter inner structure designs at present all adopting independent structure, and inductance, electric capacity, copper bar and outer structure are discrete type structure, and this kind of structure is convenient for debug at the actual operation in-process, is convenient for change electric capacity and inductance and does EMC rectification. However, due to the separated structure, a plurality of links need to be combined in the actual assembly process of the filter, and the installation process and the control points are more. In addition, the installation of independent structures, particularly copper bars, needs fasteners to fix, and similar structures can be adopted in static equipment such as photovoltaic and large-scale non-mobile power supplies. However, in some mobile devices, such as automobiles, rail transportation, motors, and the like, the devices used therein are required to have high shock resistance. Particularly, the electric automobile service environment not only needs higher shock resistance, but also makes clear limitation on the size of equipment. For such a requirement, the conventional filter structure cannot meet the actual use requirement, and further optimization of the structure is required.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a compact integration wave filter can solve above-mentioned problem.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a compact integration wave filter, includes the plastic part, pre-buried in the plastic part has the copper bar, the copper bar runs through the first end of plastic part and the second end relative with first end, the first end and the second end of plastic part are provided with first inductance and second inductance respectively, be provided with electric capacity between the first end of plastic part and the second end.

Furthermore, a first inductor embedding position and a second inductor embedding position are preset at the first end and the second end of the plastic part, and the first inductor embedding position and the second inductor embedding position are respectively provided with the first inductor and the second inductor.

Furthermore, a capacitor embedding position is preset between the first end and the second end of the plastic part, and the capacitor is arranged in the capacitor embedding position.

Furthermore, the first inductor comprises two E-shaped sub-inductors which are oppositely arranged, and the copper bar is arranged in a cavity formed by the two E-shaped sub-inductors in a surrounding manner.

Furthermore, two ends of the copper bar are provided with connecting through holes.

Furthermore, potting glue is arranged between the first inductor and the first inductor embedding position, between the second inductor and the second inductor embedding position and between the capacitor and the capacitor embedding position.

Further, the first inductor is a ferrite inductor.

Further, the second inductor is a nanocrystalline inductor.

The utility model has the advantages that:

1. the utility model has convenient installation and space saving, and solves the problem of inconvenient installation of the traditional filter;

2. the utility model is an integrated design, has simple and firm structure and stronger shock resistance;

3. the utility model discloses the use of multiple material inductance, the filtering effect covers EMC full frequency channel;

4. the utility model discloses the ferrite inductance adopts EE type opening design, the installation of being convenient for, and the suppression of differential mode and common mode is compromise to the difference mode of difference mode an organic whole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a compact integral filter;

FIG. 2 is a top sectional view of a compact integral filter;

fig. 3 is a front sectional view of a compact integrated filter.

In the figure: 1. the capacitor comprises a plastic part, 2, a second inductor, 3, a capacitor, 4, a first inductor and 5 copper bars.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

As shown in fig. 1-3, according to the embodiment of the utility model provides a compact integration wave filter, including plastic part 1, pre-buried copper bar 5 in the plastic part 1, copper bar 5 runs through the first end of plastic part 1 and the second end relative with the first end, the first end and the second end of plastic part 1 are provided with first inductance 4 and second inductance 2 respectively, be provided with electric capacity 3 between the first end of plastic part 1 and the second end.

In an embodiment of the present invention, the first inductor embedding position and the second inductor embedding position are preset at the first end and the second end of the plastic component 1, and the first inductor embedding position and the second inductor embedding position are respectively set at the first inductor 4 and the second inductor 2.

In an embodiment of the present invention, an electric capacity embedding position is preset between the first end and the second end of the plastic component 1, and the electric capacity 3 is disposed in the electric capacity embedding position.

In a specific embodiment of the present invention, the first inductor 4 includes two opposite E-shaped sub-inductors, and the copper bar 5 is disposed in the cavity formed by the two E-shaped sub-inductors.

In a specific embodiment of the present invention, the two ends of the copper bar 5 are provided with connecting through holes.

In an embodiment of the present invention, the first inductor 4 and the first inductor are embedded between the positions, the second inductor 2 and the second inductor are embedded between the positions, the capacitor 3 and the capacitor are embedded between the positions, and the embedding glue is disposed between the positions.

In a specific embodiment of the present invention, the first inductor 4 is a ferrite inductor.

For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.

When the compact integrated filter is used specifically, according to the utility model, the copper bar 5 is embedded in the plastic part 1, the two ends of the copper bar 5 are provided with connecting through holes, which is convenient for connecting cables, leading out contacts and connecting capacitors, the first inductor 4 adopts an EE-shaped structure for ferrite inductors, an air gap is increased in the middle, and the magnetic leakage of the inductor is increased, so that the inductor takes account of the characteristics of differential mode and common mode, and is a differential-mode and common-mode integrated scheme;

the second inductor 2 adopts a nanocrystalline inductor, and utilizes the characteristic of high new performance of the low frequency (less than or equal to 1 MHz) of the inductor to make up the defect of insufficient performance of ferrite under the low frequency, and the preset embedding enables the nanocrystalline bare core to be directly placed into the plastic shell for encapsulation, protects the magnetic core, enables the magnetic core and the filter to form a whole, and ensures the anti-seismic requirement. Gaps among the first inductor 4, the second inductor 2 and the capacitor 3 in the assembling process are filled and sealed by glue to form a whole, and the used pouring sealant is high-performance silica gel, has the characteristics of flexibility, high heat conduction and flame retardance, can effectively protect the inductors and reduces stress borne by the inductors.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a compact integration wave filter, includes plastic part (1), its characterized in that, pre-buried in plastic part (1) has copper bar (5), copper bar (5) run through the first end of plastic part (1) and hold with the second that first end is relative, the first end and the second end of plastic part (1) are provided with first inductance (4) and second inductance (2) respectively, be provided with electric capacity (3) between the first end and the second end of plastic part (1).

2. The compact integrated filter according to claim 1, wherein a first inductor embedding position and a second inductor embedding position are preset at the first end and the second end of the plastic part (1), and the first inductor embedding position and the second inductor embedding position are respectively provided with the first inductor (4) and the second inductor (2).

3. The compact integrated filter according to claim 2, characterized in that a capacitor embedding position is preset between the first end and the second end of the plastic part (1), and the capacitor (3) is arranged in the capacitor embedding position.

4. The compact integrated filter according to claim 1, wherein the first inductor (4) comprises two opposite E-shaped sub-inductors, and the copper bar (5) is disposed in a cavity formed by the two E-shaped sub-inductors in a surrounding manner.

5. The compact integrated filter according to claim 1, characterized in that both ends of the copper bar (5) are provided with connecting through holes.

6. The compact integrated filter according to claim 3, wherein potting glue is provided between the first inductor (4) and the first inductor embedding location, between the second inductor (2) and the second inductor embedding location, and between the capacitor (3) and the capacitor embedding location.

7. The compact integrated filter according to claim 1, characterized in that the first inductance (4) is a ferrite inductance.

8. The compact integrated filter according to claim 1, characterized in that said second inductor (2) is a nanocrystalline inductor.