CN215912078U

CN215912078U - Filter

Info

Publication number: CN215912078U
Application number: CN202122085025.4U
Authority: CN
Inventors: 蒋小刚
Original assignee: Beijing China Tsp Technology Co ltd; Jiangsu Bdstar Navigation Automotive Electronics Co ltd; Omo Software Co ltd; BDstar Intelligent and Connected Vehicle Technology Co Ltd
Current assignee: Beijing China Tsp Technology Co ltd; Jiangsu Bdstar Navigation Automotive Electronics Co ltd; Omo Software Co ltd; BDstar Intelligent and Connected Vehicle Technology Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-25
Anticipated expiration: 2031-08-30

Abstract

The utility model provides a filter, which relates to the technical field of power supply of electronic products, and is connected between a power supply and the electronic products; comprises a circuit board and components; the plurality of components are arranged on the surface of the circuit board; the circuit board comprises an input contact pin and an output contact pin, the input contact pin is arranged on the surface of the circuit board, which deviates from the component, and the output contact pin is arranged on the surface of the circuit board, which is provided with the component. The utility model solves the technical problems of large occupied size and narrow filtering range of the filter in the prior art.

Description

Filter

Technical Field

The utility model relates to the technical field of power supply of electronic products, in particular to a filter.

Background

Along with the development of economy, the electromagnetic compatibility problem of each electronic product emerges due to the increase of various electronic devices, and various filters are derived so as to solve the electromagnetic compatibility problem among the electronic products.

The existing vehicle-mounted electronic product is generally a simple C-type filter formed by adding a plurality of grounding capacitors with different capacities at a power conversion circuit to solve the problem of electromagnetic compatibility, and has the problems of large occupied volume and narrow filtering range.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a filter to solve the technical problems of large occupied volume and narrow filtering range of the filter in the prior art.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

a filter is connected between a power supply and an electronic product; the circuit board comprises a circuit board and components;

the number of the components is multiple, and the components are arranged on the surface of the circuit board;

the circuit board comprises an input contact pin and an output contact pin, the input contact pin is arranged on the surface of the circuit board deviating from the component, and the output contact pin is arranged on the surface of the circuit board provided with the component.

Further, in the present invention,

the plurality of components are electrically connected.

Further, in the present invention,

the component includes a feedthrough capacitor configured to reject high frequency signals.

Further, in the present invention,

the component comprises a low-frequency capacitor and a common-mode inductor, and the low-frequency capacitor is electrically connected with the common-mode inductor;

the low-frequency capacitor and the common-mode inductor are configured to achieve suppression of switching frequency and low-order harmonic of the power supply chip through electric connection.

Further, in the present invention,

the component comprises a differential mode inductor and a capacitor, and the differential mode inductor is electrically connected with the capacitor;

the differential-mode inductance and the capacitance are configured to achieve suppression of general interference through electrical connection.

Further, in the present invention,

the output contact pin comprises a first section and a second section, and the first section is connected with the second section in an included angle;

one end of the first section, which is far away from the second section, is electrically connected with the circuit board.

Further, in the present invention,

the output contact pin is provided with two, two the output contact pin is followed the width direction parallel interval of circuit board sets up.

Further, in the present invention,

the input contact pin is provided with two, two the input contact pin is along the width direction parallel interval of circuit board sets up.

Further, in the present invention,

the filter further comprises a shell, and the components are covered on the shell.

Further, in the present invention,

the terminal surface of shell is provided with the through-hole, output contact pin passes the through-hole.

By combining the technical scheme, the technical effect analysis realized by the utility model is as follows:

the utility model provides a filter, which is connected between a power supply and an electronic product; comprises a circuit board and components; the plurality of components are arranged on the surface of the circuit board; the circuit board comprises an input contact pin and an output contact pin, the input contact pin is arranged on the surface of the circuit board, which deviates from the component, and the output contact pin is arranged on the surface of the circuit board, which is provided with the component. The plurality of components are arranged on the surface of the circuit board, and the occupied space of the filter is saved by adopting integrated combination; the circuit board comprises an input contact pin and an output contact pin, so that the connection of the filter with a power supply and an electronic product is facilitated; the components are arranged in a plurality of numbers, and different components are combined with each other to realize the suppression of different harmonic waves, so that the filtering range is enlarged.

Drawings

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

Fig. 1 is a schematic perspective view of a filter according to an embodiment of the present invention;

fig. 2 is a schematic perspective view 1 (including a housing) of a filter according to an embodiment of the present invention;

fig. 3 is a schematic perspective view 2 (including a housing) of a filter according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a filter according to an embodiment of the present invention.

Icon:

100-a circuit board; 200-components; 110-input pin; 120-output pin; 210-feedthrough capacitors; 220-low frequency capacitance; 230-common mode inductance; 240-differential mode inductance; 250-capacitance; 121-first section; 122-a second segment; 300-a housing; 310-through holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

In view of this, the filter provided in the embodiments of the present invention is connected between the power supply and the electronic product; comprises a circuit board 100 and a component 200; a plurality of components 200 are arranged, and the plurality of components 200 are arranged on the surface of the circuit board 100; the circuit board 100 includes input pins 110 and output pins 120, the input pins 110 are disposed on a surface of the circuit board 100 facing away from the component 200, and the output pins 120 are disposed on a surface of the circuit board 100 where the component 200 is disposed. The plurality of components 200 are arranged on the surface of the circuit board 100, and the occupied space of the filter is saved by adopting integrated combination; the circuit board 100 includes an input pin 110 and an output pin 120, which facilitate connection of the filter with a power supply and an electronic product; the components 200 are provided in a plurality, and different components 200 can be combined with each other to suppress different harmonics, so that the filtering range is enlarged.

The shape and structure of the filter are explained in detail below:

in an alternative aspect of an embodiment of the present invention, referring to fig. 1, a plurality of components 200 are electrically connected.

The plurality of components 200 are electrically connected to each other, so that current flows through each component 200; because the characteristics of each component 200 are different, the current circulation effect that reaches is different, and the different connection mode of each component 200 can realize the inhibitory action to different harmonics, has increased the filtering range.

In an alternative aspect of an embodiment of the present invention, component 200 includes a feedthrough capacitor 210, where feedthrough capacitor 210 is configured to reject high frequency signals.

Specifically, the feedthrough capacitor 210 is directly mounted on the circuit board 100, and preferably, the feedthrough capacitor 210 is soldered to the circuit board 100, although other connection methods, such as a screw connection, should be considered within the scope of the embodiments of the present invention.

The components 200 include a feedthrough capacitor 210, the feedthrough capacitor 210 can be matched with other components 200 to form a high-frequency feedthrough capacitor 210 filter assembly, and the high-frequency feedthrough capacitor 210 filter assembly is mainly used for suppressing high-frequency signals for various high-frequency interferences of vehicle-mounted equipment, such as higher harmonics of various clock crystal oscillators.

In an alternative of the embodiment of the present invention, the component 200 includes a low-frequency capacitor 220 and a common-mode inductor 230, and the low-frequency capacitor 220 is electrically connected to the common-mode inductor 230; the low-frequency capacitor 220 and the common-mode inductor 230 are configured to electrically connect to suppress the switching frequency and low-order harmonics of the power chip.

Specifically, the low frequency capacitor 220 is mounted on the circuit board 100, and preferably, the low frequency capacitor 220 is soldered on the circuit board 100, but of course, other connection manners should be within the scope of the embodiments of the present invention; the common mode inductor 230 is mounted on the circuit board 100, and preferably, the common mode inductor 230 is soldered on the circuit board 100, but of course, other connection manners should be within the scope of the embodiments of the present invention; the low-frequency capacitor 220 is electrically connected with the common-mode inductor 230 to realize current conduction.

The component 200 comprises a low-frequency capacitor 220 and a common-mode inductor 230, the low-frequency capacitor 220 is electrically connected with the common-mode inductor 230 to form a high-capacity low-frequency filter circuit, and the low-frequency filter circuit mainly aims at the switching frequency and other low-order harmonics of a power supply chip and achieves suppression of low-frequency signals.

In an alternative of the embodiment of the present invention, the component 200 includes a differential mode inductor 240 and a capacitor 250, and the differential mode inductor 240 is electrically connected to the capacitor 250; the differential-mode inductance 240 and the capacitance 250 are configured to achieve suppression of general interference through electrical connection.

Specifically, the differential-mode inductor 240 is mounted on the circuit board 100, and preferably, the differential-mode inductor 240 is soldered on the circuit board 100, but of course, other connection manners should be within the scope of the embodiments of the present invention; the capacitor 250 is mounted on the circuit board 100, and preferably, the capacitor 250 is soldered on the circuit board 100, but of course, other connection methods are also within the scope of the embodiments of the present invention; the differential mode inductor 240 is electrically connected with the capacitor 250 to realize current conduction.

The component 200 includes a differential mode inductor 240 and a capacitor 250, the differential mode inductor 240 and the capacitor 250 are electrically connected and matched to form a low-pass filter circuit, and electromagnetic interference on a frequency band from 1Mhz to 100Mhz is realized mainly for general interference, such as interference of an internal chip, a circuit and the like coupled to a power line.

In an alternative embodiment of the present invention, referring to fig. 4, the component 200 includes a feedthrough capacitor 210, a low-frequency capacitor 220, a common-mode inductor 230, a differential-mode inductor 240, and a capacitor 250.

Specifically, the feedthrough capacitor 210, the low frequency capacitor 220, the common mode inductor 230, the differential mode inductor 240, and the capacitor 250 are all mounted on the circuit board 100 and electrically connected.

The components 200 comprise a feedthrough capacitor 210, a low-frequency capacitor 220, a common-mode inductor 230, a differential-mode inductor 240 and a capacitor 250, and the components 200 are electrically connected, so that the suppression of various high-frequency interferences of the vehicle-mounted equipment, such as higher harmonics of various clock crystal oscillators, and the suppression of the switching frequency of a power supply chip and other low-order harmonics, and the suppression of general electromagnetic interference are realized.

In an alternative of the embodiment of the present invention, the feedthrough capacitor 210 is used as a first set of filter circuits, the low-frequency capacitor 220 and the common-mode inductor 230 are used as a second set of filter circuits, and the differential-mode inductor 240 and the capacitor 250 are used as a third set of filter circuits, which can be randomly combined.

Specifically, the combination of the first group of filter circuits and the second group of filter circuits realizes the suppression of various high-frequency signal interferences of the vehicle-mounted equipment and the switching frequency and other low-frequency harmonics of the power chip; the first group of filter circuits and the third group of filter circuits are combined to realize the suppression of various high-frequency signal interferences and general electromagnetic interferences of the vehicle-mounted equipment; the second group of filter circuits and the third group of filter circuits are combined to realize the suppression of the switching frequency and other low-frequency harmonics of the power supply chip and general electromagnetic interference.

The first group of filter circuits, the second group of filter circuits and the third group of filter circuits can be randomly combined, the application range of the filter is expanded, and a user can select filters with different functions according to specific use environments.

In an alternative of the embodiment of the present invention, in a use state, one end of the output pin 120 is connected to the surface of the circuit board 100 on which the component 200 is disposed, and the other end is connected to the electronic product.

One end of the output pin 120 is connected to the circuit board 100, and the other end is connected to the electronic product, so that the circuit board 100 is connected to the electronic product, and when a current flows through the circuit board 100, the current can be conducted to the electronic product to supply power to the electronic product.

In an alternative of the embodiment of the present invention, the output pin 120 includes a first section 121 and a second section 122, and the first section 121 and the second section 122 are connected at an included angle; an end of the first segment 121 facing away from the second segment 122 is electrically connected to the circuit board 100.

The output pin 120 includes a first section 121 and a second section 122, and the first section 121 and the second section 122 are disposed at an included angle, so that the output pin 120 is conveniently connected to input ports of other electronic products. Furthermore, the first section 121 and the second section 122 are vertically arranged, so that the production and the processing are convenient, and the appearance uniformity of the filter is improved.

In an alternative to the present embodiment, the first segment 121 and the second segment 122 are integrally connected.

The first section 121 and the second section 122 are integrally connected, so that the internal bonding strength of the output pin 120 is improved, and the service life of the output pin 120 is prolonged. Of course, other connection methods, such as a threaded connection, etc., are also within the scope of the embodiments of the present invention.

In an alternative of the embodiment of the present invention, two output pins 120 are provided, and the two output pins 120 are spaced in parallel along the width direction of the circuit board 100.

The number of the output pins 120 is two, and the two output pins 120 are arranged in parallel at intervals and matched with the input interface of the electronic product, so that the direct connection with the input interface of the electronic product can be realized. In addition, the output pin 120 can be directly inserted into the input interface of the electronic product, and the operation is convenient.

In an alternative of the embodiment of the present invention, in a use state, one end of the input pin 110 is connected to a surface of the circuit board 100 away from the component 200, and the other end is connected to a power supply.

One end of the input pin 110 is connected to the power supply, and the other end is connected to the circuit board 100, so as to conduct the current.

In an alternative of the embodiment of the present invention, two input pins 110 are provided, and the two input pins 110 are spaced in parallel along the width direction of the circuit board 100.

The number of the input pins 110 is two, and the two input pins 110 are arranged in parallel at intervals and matched with the output interface of the power supply, so that the direct connection with the output interface of the power supply can be realized. In addition, the input pin 110 can be directly inserted into the output interface of the power supply, and the operation is convenient.

In an alternative of the embodiment of the present invention, please refer to fig. 2, the filter further includes a housing 300, and the component 200 is covered by the housing 300.

The housing 300 covers the element to protect the element from damage during use. In addition, the housing 300 shields the internal filter circuit, and isolates the input pin 110 from the output pin 120, which is convenient for operation. Preferably, the housing 300 is made of a metal material, so that the stability of the housing 300 is improved, and the internal filter circuit is shielded.

In an alternative embodiment of the present invention, referring to fig. 3, the end face of the housing 300 is provided with a through hole 310, and the output pin 120 passes through the through hole 310.

The end surface of the housing 300 is provided with a through hole 310 for the output pin 120 to pass through, so that the output pin 120 is exposed out of the housing 300, and the output pin 120 is conveniently connected with an electronic product.

In an alternative of the embodiment of the present invention, there are two through holes 310, and the two through holes 310 are disposed in one-to-one correspondence with the two output pins 120.

Two through holes 310 are provided, and the two through holes 310 are provided in one-to-one correspondence with the two output pins 120. The two output pins 120 are exposed out of the housing 300, which facilitates the connection between the output pins 120 and the electronic product.

In an alternative to the present embodiment, the housing 300 is provided in a square shape.

Specifically, the housing 300 is provided in a hollow square structure.

The housing 300 is configured as a hollow square structure, the hollow part is used for accommodating a plurality of components 200, and the square structure is matched with the structure of the circuit board 100, so that the housing 300 is convenient to mount. Of course, other configurations are also within the scope of the embodiments of the present invention.

In an alternative of the present embodiment, the housing 300 is detachably connected to the circuit board 100.

Specifically, the housing 300 is screwed with the circuit board 100 using a fastener.

The housing 300 is detachably connected to the circuit board 100, which facilitates installation and maintenance of the internal filter circuit. Of course, other connection methods, such as welding, etc., are also within the scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filter is connected between a power supply and an electronic product; it is characterized by comprising: a circuit board (100) and a component (200);

the number of the components (200) is multiple, and the components (200) are arranged on the surface of the circuit board (100);

circuit board (100) are including input contact pin (110) and output contact pin (120), input contact pin (110) are located circuit board (100) deviate from the surface of components and parts (200), output contact pin (120) are located circuit board (100) are equipped with the surface of components and parts (200).

2. A filter according to claim 1, characterised in that a plurality of said components (200) are electrically connected.

3. The filter of claim 1, wherein the component (200) comprises a feedthrough capacitor (210), the feedthrough capacitor (210) configured to reject high frequency signals.

4. The filter of claim 1, wherein the component (200) comprises a low frequency capacitor (220) and a common mode inductor (230), the low frequency capacitor (220) being electrically connected to the common mode inductor (230);

the low-frequency capacitor (220) and the common-mode inductor (230) are configured to realize the suppression of the switching frequency and low-order harmonic of the power supply chip through electric connection.

5. The filter of claim 1, wherein the component (200) comprises a differential mode inductor (240) and a capacitor (250), the differential mode inductor (240) being electrically connected to the capacitor (250);

the differential-mode inductance (240) and the capacitance (250) are configured to achieve suppression of general interference through electrical connection.

6. The filter according to claim 1, characterized in that the output pin (120) comprises a first section (121) and a second section (122), the first section (121) and the second section (122) being connected at an angle;

the end of the first section (121) facing away from the second section (122) is electrically connected to the circuit board (100).

7. The filter of claim 1, wherein the output pins (120) are provided in two, and the two output pins (120) are spaced in parallel along the width direction of the circuit board (100).

8. The filter of claim 1, wherein the input pins (110) are provided in two, and the two input pins (110) are spaced in parallel along the width direction of the circuit board (100).

9. The filter of claim 1, further comprising a housing (300), wherein the housing (300) covers the component (200).

10. A filter according to claim 9, characterized in that the end face of the housing (300) is provided with a through hole (310), the output pin (120) passing through the through hole (310).