阅读说明：本技术 一种紧凑型一体化滤波器 (Compact integrated filter ) 是由 张玉海 王刚 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种紧凑型一体化滤波器,包括塑胶件,所述塑胶件中预埋有铜排,所述铜排贯穿所述塑胶件的第一端和与第一端相对的第二端,所述塑胶件的第一端和第二端分别设置有第一电感和第二电感,所述塑胶件的第一端和第二端之间设置有电容。本发明安装方便、节省空间,解决了传统滤波器安装不方便的问题,铁氧体电感采用EE型开口设计,便于安装,差共模一体兼顾差模和共模的抑制。(The invention discloses a compact integrated filter, which comprises a plastic part, wherein copper bars are embedded in the plastic part, the copper bars penetrate through a first end and a second end opposite to the first end of the plastic part, the first end and the second end of the plastic part are respectively provided with a first inductor and a second inductor, and a capacitor is arranged between the first end and the second end of the plastic part. The ferrite inductor is convenient to install, saves space, solves the problem of inconvenience in installing the traditional filter, is convenient to install due to the fact that the ferrite inductor is designed by the EE-type opening, and can be used for inhibiting differential mode and common mode in a differential-common mode.)

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.

Technical Field

The invention relates to the field of filters, in particular to a compact integrated 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.

Disclosure of Invention

In view of the above technical problems in the related art, the present invention provides a compact integrated filter, which can solve the above problems.

In order to achieve the technical purpose, the technical scheme of the invention 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 invention has the beneficial effects that:

1. the filter is convenient to install, saves space and solves the problem that the traditional filter is inconvenient to install;

2. the invention is of integrated design, has simple and firm structure and stronger shock resistance;

3. the use of the inductor made of various materials, the filtering effect covers the EMC full frequency band;

4. the ferrite inductor adopts an EE-type opening design, is convenient to install, and can realize differential mode and common mode suppression in a differential mode and a common mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed 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 it is obvious for those skilled in the art to obtain other 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 clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

As shown in fig. 1 to 3, the compact integrated filter according to the embodiment of the present invention includes a plastic part 1, a copper bar 5 is embedded in the plastic part 1, the copper bar 5 penetrates through a first end and a second end of the plastic part 1, the first end and the second end of the plastic part 1 are respectively provided with a first inductor 4 and a second inductor 2, and a capacitor 3 is disposed between the first end and the second end of the plastic part 1.

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

In an embodiment of the present invention, a capacitor embedding location is preset between the first end and the second end of the plastic component 1, and the capacitor 3 is disposed in the capacitor embedding location.

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

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

In an embodiment of the present invention, potting glue is disposed 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.

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

In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.

When the compact integrated filter is used specifically, according to the compact integrated filter, the copper bar 5 is embedded in the plastic part 1, the two ends of the copper bar 5 are provided with the connecting through holes, so that cables can be conveniently connected, the contacts can be led out, and the capacitors can be conveniently connected, the first inductor 4 is a ferrite inductor and adopts an EE-shaped structure, an air gap is increased in the middle, the magnetic leakage of the inductor is increased, the inductor has the characteristics of differential mode and common mode, and the compact integrated filter is a differential-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 for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.