CN210041644U - Power supply assembly and electronic equipment - Google Patents
Power supply assembly and electronic equipment Download PDFInfo
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- CN210041644U CN210041644U CN201920897835.XU CN201920897835U CN210041644U CN 210041644 U CN210041644 U CN 210041644U CN 201920897835 U CN201920897835 U CN 201920897835U CN 210041644 U CN210041644 U CN 210041644U
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Abstract
The application discloses power supply assembly and electronic equipment relates to electron technical field. The power supply assembly comprises a radio frequency interference suppression module, a power supply line and a power interface, and the power supply line is coupled with the power interface; the radio frequency interference suppression module comprises an LC filtering module and an X capacitor, wherein the LC filtering module is coupled with a power supply line, the X capacitor is coupled with the power supply line, the LC filtering module is used for filtering high-frequency clutter signals, and the X capacitor is used for suppressing the electromagnetic interference of a power supply. The power supply assembly and the electronic equipment provided by the embodiment of the application can realize better filtering high-frequency clutter signals and suppress the electromagnetic interference of a power supply by connecting the LC filtering module with the X capacitor in a coupling manner.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a power supply assembly and an electronic device.
Background
With the rapid development of power and electronic technologies, the electromagnetic interference environment is becoming more severe, and the problem of radio frequency continuous interference of NB _ LTE _ BAND3 in CE authentication is mainly caused by a line for converting 12V power supply to 4V power supply of vehicle-mounted equipment. For these continuous interferences, the continuous interferences can be filtered by means of serially connecting the common mode inductor and the capacitor, however, after serially connecting the common mode inductor and the capacitor connected in series with 2000uF (the capacitor is close to the position of 12V), the electromagnetic interference problem still exists, even if a conventional magnetic ring is added, the effect is still not good, and there are interferences (circuit ripples, radio frequency interference, conducted interference, etc.) and the margin is not sufficient.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present application provides a power supply assembly and an electronic device to improve the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose.
In a first aspect, an embodiment of the present application provides a power supply assembly, which includes a radio frequency interference suppression module, a power supply line, and a power interface, where the power supply line is coupled with the power interface; the radio frequency interference suppression module comprises an LC filtering module and an X capacitor, wherein the LC filtering module is coupled with a power supply line, the X capacitor is coupled with the power supply line, the LC filtering module is used for filtering high-frequency clutter signals, and the X capacitor is used for suppressing electromagnetic interference of a power supply.
Furthermore, the power supply circuit comprises an anode power supply circuit and a cathode power supply circuit, the LC filter module comprises a first inductor and a first capacitor, the first inductor is connected in series with the anode power supply circuit, the first capacitor is connected in parallel with the anode power supply circuit, and one end of the first capacitor is configured as a ground terminal.
Further, the LC filter module further includes a second inductor and a second capacitor, the second inductor is connected in series with the negative power supply line, the second capacitor is connected in parallel with the negative power supply line, and one end of the second capacitor is configured as a ground terminal.
Further, the value ranges of the first inductor and the second inductor include: 105 nH-135 nH, and the value range of the first capacitor and the second capacitor comprises 30 PF-36 PF.
Further, the value of the first inductor is 120nH, and the value of the first capacitor is 33 PF.
Further, the value of the second inductor is 120nH, and the value of the second capacitor is 33 PF.
Further, the X capacitor is connected with the power supply line in parallel, and the X capacitor is arranged at a position which is less than 30mm away from the power interface.
Further, the value of the X capacitance is 1.5 uF.
In a second aspect, an embodiment of the present application provides an electronic device, including: the power supply assembly as described above; and the power supply assembly is coupled and connected with an interface of a power supply module of the terminal equipment.
Further, the value range of the LC filter module from the power module of the terminal device is as follows: 0 to 10 mm.
Compared with the prior art, the utility model provides a power supply unit and electronic equipment, the accessible is connected LC filter module and X capacitive coupling, realizes better filtering high frequency clutter signal, suppresses the electromagnetic interference of power.
These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
Drawings
Fig. 1 is a block diagram of an electronic device according to an embodiment of the present disclosure.
Fig. 2 is a block diagram of a power supply assembly according to an embodiment of the present disclosure.
Fig. 3 is a schematic circuit structure diagram of a power supply assembly according to an embodiment of the present disclosure.
Detailed Description
In order to facilitate understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 invention belongs. The terminology used herein in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the description of the present invention, it should also be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
CE certification provides a uniform technical specification for trading of products in various countries in European markets, and simplifies the trading procedure. CE certification is required to be carried out on products of any country to enter the European Union and European free trade area, and a CE mark is attached to the products. CE certification is thus a pass for products to enter the european union and european trade free zone national markets.
The problem of radio frequency continuous interference of NB _ LTE _ BAND3 in CE authentication is mainly caused by a line for converting 12V power supply into 4V power supply of vehicle-mounted equipment and the like. As a way of filtering these continuous interferences, they can be filtered by connecting common mode inductors and capacitors in series.
However, the inventor finds in research that after the common mode inductor and the capacitor connected in series with 2000uF (the capacitor is close to 12V), the electromagnetic interference problem still exists, even if the conventional magnetic ring is still not effective, the interference (such as circuit ripple, radio frequency interference, conducted interference and the like) still exists, and the margin of the capacitor and the inductor is not enough.
Based on the above problems, the inventor has conducted a series of studies on the existing power supply assembly and electronic equipment, found that the existing power supply assembly is difficult to use, and comprehensively considered the requirements of users in practical application, and proposed the power supply assembly and the electronic equipment in the embodiments of the present application.
The power supply assembly and the electronic device provided by the embodiments of the present application will be described in detail by specific embodiments.
Referring to fig. 1, fig. 1 is a block diagram of an electronic device 300 according to an embodiment of the present disclosure. The electronic device 300 includes a power supply module 100 and a terminal device 200, wherein the power supply module 100 is connected to the terminal device 200, and the power supply module 100 is configured to supply power to the terminal device 200 and reduce electromagnetic interference or radio frequency interference generated during power supply. The power supply assembly 100 is coupled with an interface of a power supply module of the terminal device 200. The terminal device 200 may be a short-range wireless communication device, such as a Zigbee device or a bluetooth device, or may be a mobile phone, a tablet computer, or any other device with a mobile communication function, which is not limited herein.
Referring to fig. 2, fig. 2 is a block diagram of a circuit structure of a power supply assembly 100 according to an embodiment of the present disclosure. The power supply assembly 100 includes an rfi suppression module 10, a power supply line 20, and a power interface 30. The radio frequency interference suppression module 10 includes an LC filter module 11 and an X capacitor 12. The LC filtering module 11 is coupled with the power supply line 20, the X capacitor 12 is coupled with the power supply line 20, the LC filtering module 11 is used for filtering high-frequency clutter signals, and the X capacitor 12 is used for suppressing electromagnetic interference generated by the power interface in the power supply process. In some embodiments, the power supply line 20 may be a power line, a signal line, or the like, and different power supply lines 20 may have one or more input and output interfaces in the same or different forms to connect different terminal devices 200 or power interfaces 30. By integrating the LC filter module 11 and the X capacitor 12 on the power supply line 20, the interference signals in signal transmission can be further reduced, so as to effectively filter out the noise signals.
Referring to fig. 3, in the present embodiment, the power supply line 20 includes a positive power supply line 21 and a negative power supply line 22, and the LC filter module 11 includes a first inductor L1 and a first capacitor C1. The first inductor L1 is connected in series with the positive power supply line 21, and the first capacitor C1 is connected in parallel with the positive power supply line 21, wherein, as shown in fig. 1, one end of the first capacitor C1 may be configured as a ground terminal.
Specifically, one end of the first inductor L1 is connected to the terminal device 200, and optionally, for example, one end of the first inductor L1 may be connected to the positive electrode of the interface of the power module of the terminal device 200, and the other end of the first inductor L1 is connected to the positive power supply line 21. One end of the first capacitor C1 is connected to the positive power supply line 21, and the other end of the first capacitor C1 is configured as a ground terminal, and optionally, in some specific embodiments, the other end of the first capacitor C1 may be connected to the ground.
Further, as a way of further increasing the effect of filtering out the high-frequency noise signals, the LC filter module 11 may further include a second inductor L2 and a second capacitor C2, the second inductor L2 is connected in series with the negative power supply line 22, and the second capacitor C2 is connected in parallel with the negative power supply line 22, wherein, as shown in fig. 1, one end of the second capacitor C2 may be configured as a ground end.
Specifically, one end of the second inductor L2 is connected to the terminal device 200, and optionally, for example, one end of the second inductor L2 may be connected to the negative electrode of the interface of the power module of the terminal device 200, and the other end of the second inductor L2 is connected to the negative electrode power supply line 22. One end of the second capacitor C21 is connected to the negative power supply line 22, and the other end of the second capacitor C2 is configured as a ground terminal, and optionally, in some specific embodiments, the other end of the second capacitor C2 may be connected to the ground.
In this embodiment, the value ranges of the first inductor L1 and the second inductor L2 may both include: 105 nH-135 nH, and the value ranges of the first capacitor C1 and the second capacitor C2 can both comprise 30 PF-36 PF. With the improvement of the power of the terminal equipment, in order to ensure the overcurrent capacity and the anti-interference capacity of the terminal equipment, as a mode, the values of the first inductor L1 and the second inductor L2 can be adjusted between 105nH and 135nH, and the values of the first capacitor C1 and the second capacitor C2 can be adjusted between 30PF and 36PF, so that the electromagnetic interference and the radio frequency interference can be better eliminated.
In this embodiment, in an implementation manner, a value of the first inductor L1 is 120nH, and a value of the first capacitor C1 is 33 PF. Further, the value of the second inductor L2 is 120nH, and the value of the second capacitor C2 is 33 PF. Through the first inductor and the second inductor of series connection 120nH, parallelly connected 33 PF's first electric capacity and second electric capacity, can more effective filtering high frequency clutter signal, realize the anti-jamming in the CE authentication.
Further, the X capacitor 12 in this embodiment is connected in parallel with the power supply line 20, and the X capacitor 12 may be disposed at a position less than 30mm away from the position of the power interface 30. It can be understood that a position closer to the power interface 30 usually generates larger electromagnetic interference and radio frequency interference, and then in order to better suppress the electromagnetic interference generated by the power supply in the power supply process, the embodiment selects to connect the X capacitor in parallel at a position less than 30mm away from the power interface, so as to better pass high frequency and low frequency, and filter the electromagnetic interference.
For example, in some specific embodiments, as shown in fig. 3, the X capacitor 12 may be disposed at a position where a distance between an intersection of one end pin of the X capacitor 12 and the positive electrode power supply line 21 and a positive electrode interface of the power interface 30 is 30mm (including 0mm to 30mm), and a distance between an intersection of the other end pin of the X capacitor 12 and the negative electrode power supply line 22 and a negative electrode interface of the power interface 30 is 30mm (including 0mm to 30 mm). Alternatively, the setting position of the X capacitor 12 is different, including the shape of the power supply line at the position of the X capacitor 12.
Specifically, in some embodiments, one end pin of the X capacitor 12 may be connected to the positive electrode power supply line 21, and the other end pin of the X capacitor 12 may be connected to the negative electrode power supply line 22.
In this embodiment, the value of the X capacitor 12 is 1.5 uF.
Further, the range of the distance between the LC filter module 11 and the power module of the terminal device 200 in this embodiment may be: 0-10 mm. In some embodiments, the LC filter modules at various distances may be adapted according to the model specification of the terminal device, and it can be understood that as the distance between the LC filter module 11 and the power supply module of the terminal device 200 decreases, the LC filter module 11 has a stronger ability to filter out noise (electromagnetic interference, radio frequency interference, and the like).
In some embodiments, the distance between the power supply line between the LC filter module 11 and the X capacitor 12 may be set according to actual requirements, for example, 1 meter, 2 meters, 5 meters, or 10 meters, where it is to be noted that, under the condition that the distance between the LC filter module 11 and the interface of the power module of the terminal device 200 is fixed, and the distance between the X capacitor 12 and the power interface 30 is fixed, the length of the distance between the power supply line between the LC filter module 11 and the X capacitor 12 does not affect the ability of the LC filter module 11 and the X capacitor 12 to filter noise.
It is understood that the power supply components in the present embodiment, the power supply lines including the LC filter module 11 and the X capacitor 12, may be configured to adapt to the shape of the power interface of the terminal device and the line shape of the power interface, and optionally, may be configured to a specific line shape according to the user's requirement.
It will be appreciated that features from the various embodiments described above may be combined with each other and form new embodiments.
The power supply assembly and the electronic equipment provided by the embodiment realize better filtering of high-frequency clutter signals and suppress electromagnetic interference of a power supply by coupling the LC filtering module and the X capacitor.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A power supply assembly, comprising: the radio frequency interference suppression device comprises a radio frequency interference suppression module, a power supply line and a power supply interface, wherein the power supply line is coupled with the power supply interface;
the radio frequency interference suppression module comprises an LC filtering module and an X capacitor, wherein the LC filtering module is coupled with a power supply line, the X capacitor is coupled with the power supply line, the LC filtering module is used for filtering high-frequency clutter signals, and the X capacitor is used for suppressing electromagnetic interference of a power supply.
2. The power supply assembly of claim 1, wherein the power supply lines comprise a positive power supply line and a negative power supply line, the LC filter module comprises a first inductor and a first capacitor, the first inductor is connected in series with the positive power supply line, the first capacitor is connected in parallel with the positive power supply line, and one end of the first capacitor is configured as a ground terminal.
3. The power supply assembly of claim 2, wherein the LC filter module further comprises a second inductor and a second capacitor, the second inductor is connected in series with the negative power supply line, the second capacitor is connected in parallel with the negative power supply line, and one end of the second capacitor is configured as a ground terminal.
4. The power supply assembly of claim 3, wherein the range of values of the first inductor and the second inductor comprises: 105 nH-135 nH, and the value range of the first capacitor and the second capacitor comprises 30 PF-36 PF.
5. The power supply assembly of claim 4, wherein the first inductor has a value of 120nH and the first capacitor has a value of 33 PF.
6. The power supply assembly of claim 4, wherein the second inductor has a value of 120nH, and the second capacitor has a value of 33 PF.
7. The power supply assembly of claim 1, wherein the X capacitor is connected in parallel with the power supply line, the X capacitor being disposed at a distance of less than 30mm from the location of the power interface.
8. The power supply assembly of claim 6, wherein the value of the X capacitance is 1.5 uF.
9. An electronic device, comprising:
the power supply assembly of any one of claims 1-8;
and the power supply assembly is coupled and connected with an interface of a power supply module of the terminal equipment.
10. The electronic device of claim 9, wherein a range of values of the LC filter module from the power module of the terminal device is: 0 to 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920897835.XU CN210041644U (en) | 2019-06-14 | 2019-06-14 | Power supply assembly and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920897835.XU CN210041644U (en) | 2019-06-14 | 2019-06-14 | Power supply assembly and electronic equipment |
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| Publication Number | Publication Date |
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| CN210041644U true CN210041644U (en) | 2020-02-07 |
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| CN201920897835.XU Active CN210041644U (en) | 2019-06-14 | 2019-06-14 | Power supply assembly and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224790A (en) * | 2020-02-24 | 2020-06-02 | 广东美的暖通设备有限公司 | Power supply circuit, drive-by-wire equipment and air conditioner |
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2019
- 2019-06-14 CN CN201920897835.XU patent/CN210041644U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224790A (en) * | 2020-02-24 | 2020-06-02 | 广东美的暖通设备有限公司 | Power supply circuit, drive-by-wire equipment and air conditioner |
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Denomination of utility model: Power supply components and electronic equipment Effective date of registration: 20230317 Granted publication date: 20200207 Pledgee: Zhuhai Aisheng Technology Co.,Ltd. Pledgor: SHENZHEN FEIBIT ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2023980035300 |