CN113923920B

CN113923920B - Filtering module and electronic equipment with same

Info

Publication number: CN113923920B
Application number: CN202010659301.0A
Authority: CN
Inventors: 吴斌; 龙保川; 梁树林; 王超
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2023-05-09
Anticipated expiration: 2040-07-09
Also published as: CN113923920A

Abstract

The invention discloses a filtering module and an electronic device with the same, wherein the filtering module comprises: at least one capacitor electrically connected to the circuit board, the capacitor being provided on one side in a thickness direction of the circuit board; and at least one inductor, the inductor is arranged on one side of the thickness direction of the circuit board, the inductor and the capacitor are overlapped in the thickness direction of the circuit board, and the inductor is electrically connected with the circuit board. According to the filter module, the capacitor and the inductor are arranged on the same side of the thickness direction of the circuit board, and the inductor and the capacitor are overlapped in the thickness direction of the circuit board, so that the occupied space of the filter module is small, and the miniaturization design of the filter module is facilitated.

Description

Filtering module and electronic equipment with same

Technical Field

The invention relates to the technical field of electronic equipment, in particular to a filtering module and electronic equipment with the same.

Background

In the related art, the capacitor and the inductor on the filter module are both arranged on the circuit board, and the capacitor and the inductor are transversely arranged side by side on the circuit board, so that the capacitor and the inductor occupy a larger space during installation. In addition, the heat dissipation of inductance mainly relies on bonding heat conduction gasket between the bottom of the coil of inductance and the box to carry out the contact heat dissipation, because heat dissipation area is less, the magnetic core of inductance does not have good heat dissipation route for the heat of magnetic core can't effectively dispel, thereby the radiating effect is relatively poor.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a filtering module, which reduces the space occupied by the capacitor and the inductor in the lateral direction, reduces the volume of the filtering module, and facilitates the miniaturization design of the filtering module.

Another object of the present invention is to provide an electronic device having the above filtering module.

The filter module according to the embodiment of the first aspect of the present invention includes: at least one capacitor electrically connected to the circuit board, the capacitor being provided on one side in a thickness direction of the circuit board; and at least one inductor, the inductor is arranged on one side of the thickness direction of the circuit board, the inductor and the capacitor are overlapped in the thickness direction of the circuit board, and the inductor is electrically connected with the circuit board.

According to the filter module provided by the embodiment of the invention, the capacitor and the inductor are arranged on the same side of the thickness direction of the circuit board, and the inductor and the capacitor are overlapped in the thickness direction of the circuit board, so that the occupied space of the filter module is smaller, and the miniaturization design of the filter module is facilitated.

According to some embodiments of the invention, the inductor is located on a side of the capacitor remote from the circuit board; the inductor comprises a shell, a magnetic core and a coil, wherein the magnetic core is arranged in the shell, the coil is wound on the magnetic core, and the coil is provided with a plurality of outgoing lines; and one side of the shell facing the circuit board is provided with a plurality of guide posts, and a plurality of outgoing lines respectively penetrate through the guide posts to be electrically connected with the circuit board.

According to some embodiments of the invention, the plurality of guide posts form a plurality of guide post groups, the plurality of guide post groups are arranged at intervals along a first direction, each guide post group comprises two guide posts arranged at intervals along a second direction perpendicular to the first direction, a guide plate is connected between the two guide posts of each guide post group, and the capacitor is arranged between two adjacent guide plates.

According to some embodiments of the invention, the inductance is a plurality of the inductances, and the inductances are arranged along the first direction and are connected with each other; the capacitors are arranged in a plurality, and the capacitors are arranged along the first direction.

According to some embodiments of the invention, the housing comprises: a body, the top of which is open; the cover body is arranged at the top of the body, an accommodating space is defined between the cover body and the body, the accommodating space is internally provided with the magnetic core and the coil, and the accommodating space is internally filled with heat-dissipating glue.

According to some embodiments of the invention, the cover is formed with at least one through hole therethrough.

According to some embodiments of the invention, a positioning column extending towards the cover body is arranged in the body, and the magnetic core is sleeved on the positioning column.

According to some embodiments of the invention, the body further comprises: one end of each first reinforcing rib is connected with the outer peripheral surface of one end, far away from the cover body, of the positioning column, and the other end of each first reinforcing rib is connected with the inner peripheral surface of the body; and a plurality of second reinforcing ribs, each second reinforcing rib being connected between two adjacent first reinforcing ribs.

According to some embodiments of the invention, the filtering module further comprises: the inductor is arranged on the box body; and the heat conduction gasket is positioned between the box body and the inductor.

An electronic device according to an embodiment of the second aspect of the present invention comprises a filtering module according to an embodiment of the first aspect of the present invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a cross-sectional view of a filter module according to an embodiment of the present invention;

FIG. 2 is an assembled schematic diagram of the capacitance and inductance of a filter module according to an embodiment of the invention;

FIG. 3 is a schematic diagram of the inductance of a filter module according to an embodiment of the invention;

fig. 4 is an exploded view of the inductance of a filter module according to an embodiment of the present invention.

Reference numerals:

100: a filtering module;

1: a circuit board; 2: a capacitor; 3: an inductance; 31: a housing; 311: a body; 3111: positioning columns;

3112: a first reinforcing rib; 3113: a second reinforcing rib; 312: a cover body; 3121: a through hole;

313: an accommodation space; 32: a magnetic core; 33: a coil; 34: a guide post; 35: a guide plate;

4: a case; 5: a thermally conductive gasket.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

A filter module 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

As shown in fig. 1-4, a filter module 100 according to an embodiment of the first aspect of the invention comprises at least one capacitor 2 and at least one inductor 3.

Specifically, the capacitor 2 is electrically connected to the circuit board 1, and the capacitor 2 is provided on one side in the thickness direction of the circuit board 1. The inductor 3 is provided on the above-described side in the thickness direction of the circuit board 1, the inductor 3 and the capacitor 2 are stacked in the thickness direction of the circuit board 1, and the inductor 3 is electrically connected to the circuit board 1.

For example, in the examples of fig. 1 and 2, the capacitor 2 and the inductor 3 are both located on the lower side of the circuit board 1, and the capacitor 2 and the inductor 3 are arranged above and below. Therefore, compared with the traditional filter module, the transverse occupied space of the capacitor 2 and the inductor 3 is reduced, so that the size of the filter module 100 is reduced, and the miniaturization design of the filter module 100 is facilitated. Meanwhile, the capacitor 2 and the inductor 3 are electrically connected with the circuit board 1, so that the filter module 100 can work normally.

According to the filter module 100 of the embodiment of the invention, the capacitor 2 and the inductor 3 are arranged on the same side of the thickness direction of the circuit board 1, and the inductor 3 and the capacitor 2 are overlapped in the thickness direction of the circuit board 1, so that the occupied space of the filter module 100 is small, and the miniaturization design of the filter module 100 is facilitated.

According to some embodiments of the invention, the inductance 3 is located on the side of the capacitance 2 remote from the circuit board 1. Referring to fig. 1 and 2, both the capacitor 2 and the inductor 3 are located below the circuit board 1, and the capacitor 2 is located between the inductor 3 and the circuit board 1. Thereby, since the volume of the capacitor 2 is relatively small, by disposing the capacitor 2 between the circuit board 1 and the inductor 3, the volume of the filter module 100 can be further reduced, so that the structure of the filter module 100 is more compact.

Further, referring to fig. 3 and 4, the inductor 3 includes a case 31, a core 32, and a coil 33, the core 32 is provided in the case 31, the coil 33 is wound around the core 32, and the coil 33 has a plurality of lead wires. In the description of the present invention, "plurality" means two or more. The shell 31 can protect the magnetic core 32 and the coil 33, and can effectively ensure the cleanness of the magnetic core 32 and the coil 33 and prolong the service life of the inductor 3. The side of the housing 31 facing the circuit board 1 is provided with a plurality of guide posts 34, the plurality of guide posts 34 extend towards the direction of the circuit board 1, and a plurality of outgoing lines respectively pass through the plurality of guide posts 34 to be electrically connected with the circuit board 1. Therefore, the plurality of guide posts 34 can respectively protect the plurality of outgoing lines, the plurality of guide posts 34 can support the circuit board 1, the structural strength of the filter module 100 is improved, meanwhile, the capacitor 2 can be reliably arranged between the circuit board 1 and the inductor 3, the service life of the capacitor 2 is prolonged, and the assembly efficiency is improved.

According to some embodiments of the present invention, as shown in fig. 3 and 4, a plurality of guide posts 34 form a plurality of guide post groups, the plurality of guide post groups are arranged at intervals along a first direction, each guide post group includes two guide posts 34 arranged at intervals along a second direction perpendicular to the first direction, a guide plate 35 is connected between the two guide posts 34 of each guide post group, and the capacitor 2 is arranged between the two adjacent guide plates 35. Specifically, both ends in the length direction of the guide plate 35 are respectively provided with mounting cylinders, and the two guide posts 34 of each guide post group pass through the corresponding mounting cylinders, respectively, to fix the guide plate 35 between the two guide posts 34. By providing the guide plate 35, the supporting function of the guide post 34 can be effectively enhanced, and the circuit board 1 and the capacitor 2 can be better supported, so that the structural strength of the filter module 100 can be further improved. In addition, since the capacitor 2 is arranged between the adjacent two guide plates 35, the capacitor 2 can be limited, and the capacitor 2 can be conveniently installed.

According to some embodiments of the present invention, referring to fig. 2 to 4, the plurality of inductors 3 are plural, and the plurality of inductors 3 are arranged along the first direction and connected to each other. The plurality of capacitors 2 are arranged along the first direction. Therefore, by arranging the plurality of capacitors 2 and the plurality of inductors 3, the working efficiency of the filter module 100 can be effectively improved, the plurality of inductors 3 are connected with each other along the first direction, and the plurality of capacitors 2 are distributed along the first direction, so that the structure of the filter module 100 is more compact, and the volume of the filter module 100 can be further reduced.

According to some embodiments of the present invention, as shown in fig. 4, the housing 31 includes a body 311 and a cover 312, the top of the body 311 is opened, the cover 312 is disposed on the top of the body 311, an accommodating space 313 is defined between the cover 312 and the body 311, and the magnetic core 32 and the coil 33 are disposed in the accommodating space 313. By the arrangement, the magnetic core 32 and the coil 33 can be located in the closed space, cleanliness of the magnetic core 32 and the coil 33 can be effectively guaranteed, and the service life of the inductor 3 is prolonged. The accommodating space 313 is filled with a heat-dissipating adhesive. When the inductor 3 is operated, heat generated from the coil 33 and the magnetic core 32 can be transferred to the body 311 through the heat dissipation glue and transferred to the outside air through the body 311 so as to dissipate heat from the coil 33 and the magnetic core 32. Compared with the traditional filtering module, the heat dissipation glue is filled in the accommodating space 313, so that the contact area between the coil 33 and the magnetic core 32 and the heat dissipation glue is effectively increased, and the heat dissipation efficiency of the inductor 3 is improved. In addition, the heat dissipation glue has a vibration reduction effect, and the vibration resistance of the inductor 3 can be effectively increased.

In some alternative embodiments, at least one through hole 3121 is formed through cover 312. For example, in the examples of fig. 2 to 4, the cover 312 is formed with a plurality of through holes 3121, and the plurality of through holes 3121 are arranged at intervals along the circumferential direction of the central axis of the cover 312, and when the cover 312 is mounted on the body 311, the heat dissipation glue can be poured into the accommodating space 313 through the plurality of through holes 3121, so that the pouring is convenient, and meanwhile, the material consumption of the cover 312 is saved, and the cost is reduced.

According to some embodiments of the present invention, a positioning post 3111 extending toward the cover 312 is disposed in the body 311, and the magnetic core 32 is sleeved on the positioning post 3111. As shown in fig. 4, a positioning column 3111 is provided at a middle portion of the bottom of the body 311, and the positioning column 3111 extends in the up-down direction. When the magnetic core 32 is installed, the magnetic core 32 can be sleeved on the positioning column 3111 to ensure the accuracy of the position of the magnetic core 32, meanwhile, the stability of the magnetic core 32 is ensured, the magnetic core 32 can be effectively prevented from shaking in the shell 31, and the inductor 3 can work normally.

Further, referring to fig. 4, the body 311 further includes a plurality of first reinforcing ribs 3112 and a plurality of second reinforcing ribs 3113, one end of each first reinforcing rib 3112 is connected to an outer circumferential surface of one end of the positioning column 3111 remote from the cover 312, the other end of each first reinforcing rib 3112 is connected to an inner circumferential surface of the body 311, and each second reinforcing rib 3113 is connected between two adjacent first reinforcing ribs 3112. So arranged, the plurality of first reinforcing ribs 3112 and the plurality of second reinforcing ribs 3113 can play a supporting role on the positioning column 3111 while ensuring structural strength of the positioning column 3111.

According to some embodiments of the invention, the filter module 100 further comprises a housing 4 and a thermally conductive pad 5, the inductor 3 being mounted on the housing 4, the thermally conductive pad 5 being located between the housing 4 and the inductor 3. For example, referring to fig. 1, a case 4 is installed below a circuit board 1, an inductor 3 is installed at a side of the case 4 facing the circuit board 1, and a heat conductive pad 5 is installed at a bottom of a body 311 of the inductor 3. When the inductor 3 works, the coil 33 and the magnetic core 32 generate heat, a part of heat can be transferred to the outside air through the side wall of the body 311 through the heat dissipation glue to dissipate heat, and the other part of heat can be transferred to the box 4 through the bottom wall of the body 311 through the heat conduction gasket 5 and then transferred to the outside through the box 4 to dissipate heat, so that the heat dissipation efficiency of the inductor 3 is further improved.

An electronic device (not shown) according to an embodiment of the second aspect of the present invention comprises a filtering module 100 according to an embodiment of the first aspect of the present invention described above.

According to the electronic device of the embodiment of the present invention, by adopting the filtering module 100 according to the above-described first aspect of the present invention, the miniaturization design of the electronic device is facilitated, and the heat dissipation effect of the electronic device is improved.

Alternatively, the electronic device may be any of various types of computer system devices that are mobile or portable and that perform wireless communications. In particular, the electronic device may be a mobile phone or a smart phone (e.g., iPhone (TM) -based, android (TM) -based phones), a portable gaming device (e.g., nintendo DS (TM), play Station Portable TM, game-body Advance (TM), iPhone (TM)), a laptop, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and devices such as watches, in-ear headphones, pendants, headsets, etc., the electronic device may also be other wearable devices (e.g., a head-mounted device (HMD) such as e-glasses, electronic clothing, electronic bracelets, electronic necklaces, electronic tattoos, or smartwatches).

Alternatively, the electronic device may be any of a number of electronic devices including, but not limited to, cellular telephones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbooks, personal Digital Assistants (PDAs), portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) audio layer (MP 3) players, portable medical devices, and digital cameras, and combinations thereof. In some cases, the electronic device may perform a variety of functions (e.g., playing music, displaying video, storing pictures, and receiving and sending phone calls). The electronic device may be a portable device such as a cellular telephone, media player, other handheld device, wristwatch device, pendant device, earpiece device, or other compact portable device, if desired.

Other components and operations of an electronic device according to embodiments of the present invention, such as any one of various types of computer system devices, or any one of a plurality of electronic devices, that are mobile or portable and perform wireless communications, are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter module, comprising:

at least one capacitor electrically connected to the circuit board, the capacitor being provided on one side in a thickness direction of the circuit board;

at least one inductor provided on the one side in the thickness direction of the circuit board, the inductor and the capacitor being stacked in the thickness direction of the circuit board, the inductor being electrically connected to the circuit board;

the inductor is positioned on one side of the capacitor away from the circuit board;

the inductor comprises a shell, a magnetic core and a coil, wherein the magnetic core is arranged in the shell, the coil is wound on the magnetic core, and the coil is provided with a plurality of outgoing lines;

a plurality of guide posts are arranged on one side of the shell facing the circuit board, and a plurality of outgoing lines respectively penetrate through the guide posts to be electrically connected with the circuit board;

the guide posts form a plurality of guide post groups, the guide post groups are arranged at intervals along a first direction, each guide post group comprises two guide posts arranged at intervals along a second direction perpendicular to the first direction, a guide plate is arranged between the two guide posts of each guide post group, and the capacitor is arranged between the two adjacent guide plates.

2. The filter module of claim 1, wherein the plurality of inductors are arranged in the first direction and are connected to each other;

the capacitors are arranged in a plurality, and the capacitors are arranged along the first direction.

3. The filter module of claim 1, wherein the housing comprises:

a body, the top of which is open;

the cover body is arranged at the top of the body, an accommodating space is defined between the cover body and the body, the accommodating space is internally provided with the magnetic core and the coil, and the accommodating space is internally filled with heat-dissipating glue.

4. A filter module according to claim 3, wherein the cover has at least one through hole formed therethrough.

5. A filter module according to claim 3, wherein a positioning column extending towards the cover body is arranged in the body, and the magnetic core is sleeved on the positioning column.

6. The filtering module of claim 5, further comprising:

one end of each first reinforcing rib is connected with the outer peripheral surface of one end, far away from the cover body, of the positioning column, and the other end of each first reinforcing rib is connected with the inner peripheral surface of the body;

and a plurality of second reinforcing ribs, each second reinforcing rib being connected between two adjacent first reinforcing ribs.

7. The filter module of any of claims 1-6, further comprising:

the inductor is arranged on the box body;

and the heat conduction gasket is positioned between the box body and the inductor.

8. An electronic device comprising a filtering module according to any of claims 1-7.