CN209521640U - Vehicle device power supply noise filter circuit and circuit board applied to vehicle entertainment system - Google Patents
Vehicle device power supply noise filter circuit and circuit board applied to vehicle entertainment system Download PDFInfo
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- CN209521640U CN209521640U CN201920120110.XU CN201920120110U CN209521640U CN 209521640 U CN209521640 U CN 209521640U CN 201920120110 U CN201920120110 U CN 201920120110U CN 209521640 U CN209521640 U CN 209521640U
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Abstract
The utility model provides a kind of vehicle device power supply noise filter circuit and the circuit board applied to vehicle entertainment system, which includes: inductance, transient voltage suppressor, bilateral diac, multiple input capacitances and multiple output capacitances；The cathode of transient voltage suppressor connects power input, the plus earth of transient voltage suppressor；One end of bilateral diac connects power input, the other end ground connection of bilateral diac；Multiple input capacitance one end are connect with power input；One end of multiple output capacitances is connect with power output end；One end of inductance connects power input, and the other end of inductance connects power output end；Inductance includes: winding and magnetic core；Winding is wrapped on magnetic core by the way of unidirectionally winding.The vehicle device power supply noise filter circuit construction is simple, can effectively solve the problems, such as that superposition alternating current tests existing inductance and utters long and high-pitched sounds.
Description
Technical field
The utility model relates to vehicle device technical fields, more particularly, to vehicle device power supply noise filter circuit and are applied to vehicle
Carry the circuit board of entertainment systems.
Background technique
With the quick emergence of automobile industry, the especially rapid development of domestic automobile, so that more and more users couple
The demand and experience property of on-vehicle information amusement host IHU (Infotainment Head Unit) (abbreviation vehicle device) are higher and higher.
It has now been found that the vehicle device being mounted on automobile will appear the problem of uttering long and high-pitched sounds during engine start, leads to user
It is poor using vehicle device experience effect.
Utility model content
The purpose of this utility model is that in view of the above problems in the prior art, providing a kind of vehicle device power supply noise filtering
Circuit and circuit board applied to vehicle entertainment system are for solving the deficiencies in the prior art.
Specifically, the utility model embodiment provides a kind of vehicle device power supply noise filter circuit, is applied to car entertainment
The circuit board of system, the filter circuit include: inductance, transient voltage suppressor, bilateral diac, multiple inputs
Capacitor and multiple output capacitances；
The cathode of the transient voltage suppressor is connected to the power input on the circuit board of vehicle entertainment system,
The plus earth of the transient voltage suppressor；One end of the bilateral diac is connected to vehicle entertainment system
Power input on circuit board, the other end ground connection of the bilateral diac；
One end of each input capacitance is respectively connected to the power input on the circuit board of vehicle entertainment system, each institute
The other end for stating input capacitance is grounded；
One end of each output capacitance is respectively connected to the power output end on the circuit board of vehicle entertainment system, each institute
The other end for stating output capacitance is grounded；One end of the inductance is connected to the power input on the circuit board of vehicle entertainment system
End, the other end of the inductance are connected to the power output end on the circuit board of vehicle entertainment system；
The capacitance of each input capacitance is all different, and the capacitance of each output capacitance is all different；Each input
Capacitor is used to filter out the high and low frequency clutter noise that the power input on the circuit board through vehicle entertainment system introduces；It is described
Inductance exchanges logical direct current for hindering；Each output capacitance is used to filter out the power supply output on the circuit board through vehicle entertainment system
Hold the high and low frequency clutter noise introduced；
The inductance includes: pedestal, winding and magnetic core；The winding is wrapped in the magnetic core by the way of unidirectionally winding
On；Two through-holes are set on the pedestal.
As a further improvement of the above technical scheme, the magnetic core is toroidal cores.
As a further improvement of the above technical scheme, the toroidal cores include Multi-layer amorphous material layers, and each layer is non-
Brilliant material layers stack gradually the hollow circular setting around the toroidal cores.
As a further improvement of the above technical scheme, the inductance value of the inductance is 60-100uH.
As a further improvement of the above technical scheme, the inductance value of the inductance is 80uH.
As a further improvement of the above technical scheme, the outer surface of the inductance is also enclosed with insulation sleeve.
As a further improvement of the above technical scheme, the winding selects enamel-cover copper wire, the both ends setting of the copper wire
There is tin coating, the diameter of the copper wire is 0.8-1.2mm.
As a further improvement of the above technical scheme, the input voltage of the power input is 12V.
As a further improvement of the above technical scheme, the quantity of the input capacitance is three, including first capacitor, the
Two capacitors and third capacitor；
The capacitance range of the first capacitor is 0.1-0.47 μ F, and the capacitance range of second capacitor is 820-
1200pF, the capacitance range of the third capacitor are 0.0082-0.18 μ F；
The quantity of the output capacitance is four, including the 4th capacitor, the 5th capacitor, the 6th capacitor and the 7th capacitor；
The capacitance range of 4th capacitor is 1000-3300 μ F, and the capacitance range of the 5th capacitor is 0.1-0.47 μ
F, the capacitance range of the 6th capacitor are 0.0082-0.18 μ F, and the capacitance range of the 7th capacitor is 820-1200pF.
The utility model embodiment additionally provides a kind of circuit board applied to vehicle entertainment system, sets on the circuit board
It is equipped with above-described vehicle device power supply noise filter circuit, power input and power supply output are additionally provided on the circuit board
End；
It is defeated that the cathode of transient voltage suppressor in the vehicle device power supply noise filter circuit is connected to the power supply
Enter end, one end of the bilateral diac in the vehicle device power supply noise filter circuit is connected to the power input
End；
One end of each input capacitance in the vehicle device power supply noise filter circuit is respectively connected to the power input；
One end of each output capacitance in the vehicle device power supply noise filter circuit is respectively connected to the power output end；
One end of inductance in the vehicle device power supply noise filter circuit is connected to the power input, the inductance
The other end is connected to the power output end.
Using technical solution provided by the utility model, compared with existing well-known technique, at least have following beneficial to effect
Fruit: the beneficial effects of the utility model are: utter long and high-pitched sounds problem of the vehicle device under complicated power utilization environment can be effectively eliminated, improving user makes
With the experience sense of vehicle device.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the electrical connection diagram for the vehicle device power supply noise filter circuit that an embodiment of the present invention proposes；
Fig. 2 is the structural schematic diagram for the inductance that an embodiment of the present invention proposes；
Fig. 3 is the front view for the inductance that an embodiment of the present invention proposes；
Fig. 4 is the left view for the inductance that an embodiment of the present invention proposes.
Main element symbol description:
11- magnetic core；12- winding；13- pedestal；14- insulation sleeve.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Embodiment 1
As shown in Figure 1, the utility model embodiment provides a kind of vehicle device power supply noise filter circuit, it is applied to vehicle-mounted joy
The circuit board of music system, the filter circuit include: inductance L1, transient voltage suppressor TVS1, bilateral diac
DIAC1, multiple input capacitances (first capacitor C1, the second capacitor C2 and third capacitor C3) and multiple output capacitances the (the 4th
Capacitor C4, the 5th capacitor C5, the 6th capacitor C6 and the 7th capacitor C7).
The cathode of transient voltage suppressor TVS1 is connected to the power input on the circuit board of vehicle entertainment system,
The plus earth of transient voltage suppressor TVS1.
Power input on one end to the circuit board of vehicle entertainment system of bilateral diac DIAC1, bilateral touching
Send out the other end ground connection of diode DIAC1.
First capacitor C1, the second capacitor C2, third capacitor C3 one end with the electricity on the circuit board of vehicle entertainment system
Source input terminal connection, first capacitor C1, the second capacitor C2, third capacitor C3 the other end be grounded.First capacitor C1, the second electricity
Appearance C2, third capacitor C3 select different capacitances, for filtering the interference electromagnetic wave of different frequency range.
Specifically, in the present embodiment, the capacitance range of first capacitor is 0.1-0.47 μ F, the capacitance range of the second capacitor
For 820-1200pF, the capacitance range of third capacitor is 0.0082-0.18 μ F.First capacitor C1, the second capacitor C2, third capacitor
Patch capacitor can be selected in C3.
4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7 one end with the electricity of vehicle entertainment system
Power output end connection on the plate of road, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the other end of the 7th capacitor C7 are equal
Ground connection；4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7 select different capacitances, for filtering difference
The interference electromagnetic wave of frequency range.
Specifically, in the present embodiment, the quantity of the output capacitance is four, including the 4th capacitor, the 5th capacitor, the
Six capacitors and the 7th capacitor；The capacitance range of 4th capacitor is 1000-3300 μ F, and the capacitance range of the 5th capacitor is 0.1-0.47
μ F, the capacitance range of the 6th capacitor are 0.0082-0.18 μ F, and the capacitance range of the 7th capacitor is 820-1200pF.4th capacitor
C4 can select electrolytic capacitor.Patch capacitor can be selected in 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7.
One end of inductance L1 is connected to the power input on the circuit board of vehicle entertainment system, the other end of inductance L1
The power output end being connected on the circuit board of vehicle entertainment system.
First capacitor C1, the second capacitor C2, third capacitor C3 are used to filter out the high and low frequency introduced through power input miscellaneous
Dissipate noise；Inductance L1 exchanges logical direct current for hindering；4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7 are used for
Filter out the high and low frequency clutter noise introduced through power output end.
As shown in Fig. 2, inductance L1 includes: pedestal 13, winding 12 and magnetic core 11.
Winding 12 is wrapped on magnetic core 11 by the way of unidirectionally winding；Two are arranged on pedestal 13 allows coiling to pass through
Through-hole；Coiling passes through pin of the part of through-hole as inductance.
The magnetic core 11 for being wound with winding 12 can be fixed on pedestal 13 by hot melt adhesive vertical type.
In the present embodiment, magnetic core 11 is toroidal cores.It is set as circular ring shape and facilitates winding 12 twining on magnetic core 11
More uniform around obtaining, simultaneously because the enclosed construction of circular ring shape, flux loss is few, and inductance value is higher.
Toroidal cores include Multi-layer amorphous material layers, and each layer amorphous material layers stack gradually in toroidal cores
Empty round setting.
Amorphous material layers are the ferromagnetism iron cores by being made with ferromagnetic amorphous alloy.Amorphous metal or
Alloy is also glassy metal, a kind of tool that the metal or alloy after referring to fusing is obtained via certain form nonequilibrium process
There is the material of amorphous state (also known as glassy state) structure, is usually obtained by molten condition through rapid quenching.Due to metal or conjunction
Atom has little time ordered arrangement crystallization when gold solidification, metal or alloy without forming core, the crystallization process such as grow up, and in room temperature or
Low temperature retains the disorderly arranged state of aggregation of liquid atomic, atom no longer at long-range order, periodical and regularly arranged, but
In a kind of longrange disorder ordered state, many properties of amorphous material are assigned thus, for example, high-intensitive and hardness, good
Good corrosion resistance, soft magnetism, invar characteristic, Ai Lin watts of property, superconductivity, radiation hardness damage etc..
In the present embodiment, the inductance value of inductance is 60-100uH.It is preferred that the inductance value of inductance is 80uH.
In the present embodiment, winding 12 selects enamel-cover copper wire, and the both ends of copper wire are provided with tin coating, and the diameter of copper wire is
0.8-1.2mm.It is preferred that 1.0mm.
Pedestal 13 selects rectangular plastic isolation material, and setting pedestal is conveniently fixedly welded inductance component.
The length of rectangular base is slightly larger than the outer diameter of circular ring shape magnetism.The width of rectangular base is slightly larger than circular ring shape magnetism
Thickness.As shown in Figure 3, Figure 4, the outer surface of inductance is also enclosed with insulation sleeve 14.
In the present embodiment, the voltage of power supply is 12V.Due to the typically no built-in power of vehicle device, external power supply is needed to supply
Electricity is generally exactly the battery of vehicle self-carrying for the power supply on vehicle.The battery on vehicle is typically all to select 12V at present
Lead-acid accumulator.Therefore, vehicle device selects 12V power supply power supply, is input to vehicle device through power input, powers for vehicle device.
The following table 1 is for the test data under different induction.
The various electrical sensings of table 1 are taken temperature
Winding wire diameter in above table refers to the bare wire diameter for the plain conductor that inductance uses, and does not include the insulation outside winding
Layer.
The magnetic core of the amorphous cyclic formula in magnetic core mode in above table refers to that magnetic core is toroidal cores, and the circle
Shape ring-shaped magnetic core includes Multi-layer amorphous material layers, and each layer amorphous material layers stack gradually the hollow circle around the toroidal cores
Shape setting；The magnetic core of compressed particle formula in magnetic core mode, which refers to, passes through the circular annular form that compression process is formed using ferromagnetic particle
Magnetic core.
In phenomenon in above table, image can normally be shown by shielding the bright display screen for referring to vehicle device, and screen, which does not work, refers to vehicle device
Display screen cannot be lighted, and cannot normally show image.
As can be known from the above table, by the inductance in the power circuit for the circuit board for improving vehicle entertainment system, vehicle device is uttered long and high-pitched sounds existing
As disappearing, the display screen of vehicle device can normally show that other function is also without exception, work normally, and can pass through electrical performance test
It is tested with EMC.This programme can effectively eliminate vehicle device by improving inductance self structure and utter long and high-pitched sounds problem, have no need to change peripheral circuit
Layout, do not need increase electronic component, help to improve the versatility of automobile and engineering products, the product quality for volume production vehicle device provides
Effective guarantee.
The application by setting vehicle device power supply noise filter circuit and to the inductance in circuit from inductance manufacture craft, adopt
Material, winding canoe, inductance resistance value and line footpath etc., which are started with, to be transformed, and efficiently solve that vehicle device utters long and high-pitched sounds asks
Topic.
Embodiment 2
The utility model embodiment provides a kind of circuit board applied to vehicle entertainment system, is provided with reality on circuit board
The vehicle device power supply noise filter circuit in example 1 is applied, is additionally provided with power input and power output end on circuit board；Vehicle device power supply
The cathode of transient voltage suppressor in noise filter circuit is connected to power input, vehicle device power supply noise filter circuit
In one end of bilateral diac be connected to power input；Each input capacitance in vehicle device power supply noise filter circuit
One end is respectively connected to power input；One end of each output capacitance in vehicle device power supply noise filter circuit is respectively connected to electricity
Source output terminal；One end of inductance in vehicle device power supply noise filter circuit is connected to power input, the other end connection of inductance
To power output end.
It will be appreciated by those skilled in the art that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, module in attached drawing or
Process is not necessarily implemented necessary to the utility model.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also be carried out corresponding change and is located at the one or more dresses for being different from this implement scene
In setting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
Above-mentioned the utility model serial number is for illustration only, does not represent the superiority and inferiority of implement scene.Disclosed above is only this
Several specific implementation scenes of utility model, still, the utility model is not limited to this, any those skilled in the art's energy
Think of variation should all fall into the protection scope of the utility model.
Claims (10)
1. a kind of vehicle device power supply noise filter circuit, the circuit board applied to vehicle entertainment system, which is characterized in that the filtering
Circuit includes: inductance, transient voltage suppressor, bilateral diac, multiple input capacitances and multiple output capacitances；
The cathode of the transient voltage suppressor is connected to the power input on the circuit board of vehicle entertainment system, described
The plus earth of transient voltage suppressor；One end of the bilateral diac is connected to the circuit of vehicle entertainment system
Power input on plate, the other end ground connection of the bilateral diac；
One end of each input capacitance is respectively connected to the power input on the circuit board of vehicle entertainment system, each described defeated
The other end for entering capacitor is grounded；
One end of each output capacitance is respectively connected to the power output end on the circuit board of vehicle entertainment system, each described defeated
The other end of capacitor is grounded out；One end of the inductance is connected to the power input on the circuit board of vehicle entertainment system,
The other end of the inductance is connected to the power output end on the circuit board of vehicle entertainment system；
The capacitance of each input capacitance is all different, and the capacitance of each output capacitance is all different；Each input capacitance
For filtering out the high and low frequency clutter noise of the introducing of the power input on the circuit board through vehicle entertainment system；The inductance
Logical direct current is exchanged for hindering；The power output end that each output capacitance is used to filter out on the circuit board through vehicle entertainment system draws
The high and low frequency clutter noise entered；
The inductance includes: pedestal, winding and magnetic core；The winding is wrapped on the magnetic core by the way of unidirectionally winding；
Two through-holes are set on the pedestal.
2. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that the magnetic core is annular magnetic
Core.
3. vehicle device power supply noise filter circuit according to claim 2, which is characterized in that the toroidal cores include more
Layer amorphous material layers, each layer amorphous material layers stack gradually the hollow circular setting around the toroidal cores.
4. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that the inductance value of the inductance is 60-
100uH。
5. vehicle device power supply noise filter circuit according to claim 4, which is characterized in that the inductance value of the inductance is
80uH。
6. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that also wrap the outer surface of the inductance
It is wrapped with insulation sleeve.
7. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that the winding selects enamel-cover copper
Silk, the both ends of the copper wire are provided with tin coating, and the diameter of the copper wire is 0.8-1.2mm.
8. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that the input of the power input
Voltage is 12V.
9. vehicle device power supply noise filter circuit according to claim 1, which is characterized in that the quantity of the input capacitance is
Three, including first capacitor, the second capacitor and third capacitor；
The capacitance range of the first capacitor is 0.1-0.47 μ F, and the capacitance range of second capacitor is 820-1200pF, institute
The capacitance range for stating third capacitor is 0.0082-0.18 μ F；
The quantity of the output capacitance is four, including the 4th capacitor, the 5th capacitor, the 6th capacitor and the 7th capacitor；
The capacitance range of 4th capacitor is 1000-3300 μ F, and the capacitance range of the 5th capacitor is 0.1-0.47 μ F, institute
The capacitance range for stating the 6th capacitor is 0.0082-0.18 μ F, and the capacitance range of the 7th capacitor is 820-1200pF.
10. a kind of circuit board applied to vehicle entertainment system, which is characterized in that be provided with claim 1- on the circuit board
9 described in any item vehicle device power supply noise filter circuits are additionally provided with power input and power output end on the circuit board；
The cathode of transient voltage suppressor in the vehicle device power supply noise filter circuit is connected to the power input,
One end of the bilateral diac in the vehicle device power supply noise filter circuit is connected to the power input；
One end of each input capacitance in the vehicle device power supply noise filter circuit is respectively connected to the power input；
One end of each output capacitance in the vehicle device power supply noise filter circuit is respectively connected to the power output end；
One end of inductance in the vehicle device power supply noise filter circuit is connected to the power input, the inductance it is another
End is connected to the power output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120110.XU CN209521640U (en) | 2019-01-23 | 2019-01-23 | Vehicle device power supply noise filter circuit and circuit board applied to vehicle entertainment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120110.XU CN209521640U (en) | 2019-01-23 | 2019-01-23 | Vehicle device power supply noise filter circuit and circuit board applied to vehicle entertainment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209521640U true CN209521640U (en) | 2019-10-22 |
Family
ID=68230852
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920120110.XU Active CN209521640U (en) | 2019-01-23 | 2019-01-23 | Vehicle device power supply noise filter circuit and circuit board applied to vehicle entertainment system |
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| CN (1) | CN209521640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219216A (en) * | 2021-04-23 | 2021-08-06 | 华南理工大学 | Gallium nitride microwave transistor test fixture and working method thereof |
-
2019
- 2019-01-23 CN CN201920120110.XU patent/CN209521640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219216A (en) * | 2021-04-23 | 2021-08-06 | 华南理工大学 | Gallium nitride microwave transistor test fixture and working method thereof |
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