CN208209816U - DC power supply means for anti-jamming and system - Google Patents
DC power supply means for anti-jamming and system Download PDFInfo
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- CN208209816U CN208209816U CN201820784622.1U CN201820784622U CN208209816U CN 208209816 U CN208209816 U CN 208209816U CN 201820784622 U CN201820784622 U CN 201820784622U CN 208209816 U CN208209816 U CN 208209816U
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Abstract
The utility model provides a kind of DC power supply means for anti-jamming and system, which includes: electromagnetic interference electromagnetic interface filter and at least two feedthrough capacitors, each feedthrough capacitor ground connection；At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter；At least two feedthrough capacitor is for inhibiting high-frequency interferencing signal.Since feedthrough capacitor has grounded inductor minimum, almost without the influence of lead-in inductance, and feedthrough capacitor the characteristics of its input/output terminal is isolated, can eliminate high-frequency coupling after mounting, so feedthrough capacitor has extraordinary filter effect.So installing feedthrough capacitor in DC power supply means for anti-jamming can achieve the purpose for inhibiting DC power supply medium-high frequency interference signal.
Description
Technical field
The utility model relates to motor-car technical field more particularly to a kind of DC power supply means for anti-jamming and systems.
Background technique
As electronic technology is widely applied in high-speed EMUs, it is connected in the DC power supply bus-bar system of EMU
Diversified vehicle electronic device, such as: small impedance, high current resistive or inductive load, low current, high voltage pulse hair
Generating apparatus load, high-frequency oscillator signal occurring source etc..When vehicle electronic device is in running order, direct current can be become
The potential radiation interference source of source bus, while can also become the conducted interference source for causing bus power quality to reduce.However, due to
The power supply of power supply units general DC busbar power-supply system, the vehicle electronic devices such as control, detection, the signal transmission of EMU generate
Interference these power supply units will be caused to break down, thus seriously threaten EMU safe operation, so needing to inhibit vehicle
Carry the interference that electronic equipment generates.
Electromagnetic interference (Electro Magnetic Interference, EMI) filter is used in the prior art, to vehicle
It carries the interference that electronic equipment generates to be inhibited, specifically, electromagnetic interface filter can be interfered with attenuation common-mode and the DM EMI that decays.
Wherein, Fig. 1 is the circuit diagram of electromagnetic interface filter in the prior art, as shown in Figure 1, common mode inductance Lc points in electromagnetic interface filter
Not in common mode capacitance Cy1, Cy2, Cy3, Cy4, for the common crosstalk between main track or negative wire and ground wire, consummately line is symmetrical for group
L-type filter circuit, play the role of attenuation common-mode interference.Differential mode inductance Ld and differential mode capacitor Cx2 in electromagnetic interface filter, needle
Differential mode crosstalk between match line and negative wire forms π type filter circuit, plays the role of the DM EMI that decays.Moreover, Ld is as poor
Mould inductance, while existing in the L-type filter circuit of common mode inductance Lc and common mode capacitance Cy composition, common mode filtering function is risen
Important function；Equally, the leakage inductance Le and common mode capacitance Cy of common mode inductance Lc exists in the π type filtering for differential mode crosstalk
In circuit, they also generate certain effect to differential mode filter effect simultaneously.
However, the common mode capacitor and differential mode capacitor device of existing electromagnetic interface filter can generate resonance, so that electromagnetic interface filter
The inhibiting effect of high-frequency interferencing signal is weakened, motor-car safe operation is influenced.
Utility model content
The utility model provides a kind of DC power supply means for anti-jamming and system, for inhibiting the high frequency in DC power supply to believe
Number interference.
In a first aspect, the utility model provides a kind of DC power supply means for anti-jamming, comprising: electromagnetic interface filter and at least two
A feedthrough capacitor, each feedthrough capacitor ground connection；
At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter；
At least two feedthrough capacitor is for inhibiting high-frequency interferencing signal.
At least one feedthrough capacitor and institute in an embodiment of the utility model, at least two feedthrough capacitor
The anode connection of the input terminal of electromagnetic interface filter is stated, the other feedthrough capacitors and the EMI at least two feedthrough capacitor are filtered
The cathode of the input terminal of wave device connects.
At least one feedthrough capacitor and institute in an embodiment of the utility model, at least two feedthrough capacitor
The anode connection of the output end of electromagnetic interface filter is stated, the other feedthrough capacitors and the EMI at least two feedthrough capacitor are filtered
The cathode of the output end of wave device connects.
Since feedthrough capacitor grounded inductor is minimum, almost without the influence of lead-in inductance, and feedthrough capacitor is after mounting
The characteristics of its input/output terminal is isolated, and can eliminate high-frequency coupling, so feedthrough capacitor has extraordinary filter effect.Institute
With being equipped with feedthrough capacitor in DC power supply means for anti-jamming can achieve the mesh for eliminating the high-frequency interferencing signal of DC power supply
's.
In an embodiment of the utility model, described device further include: at least one varistor；It is described at least one
Varistor is connected to the output end of the electromagnetic interface filter；
At least one described varistor is used to carry out overvoltage protection to the output end of the electromagnetic interface filter.
In an embodiment of the utility model, the varistor is three, a varistor and the EMI
The output end of filter is associated with, other two described varistor series connection, concatenated two compression resistances and the EMI are filtered
The output end of wave device is in parallel；
Junction ground connection between concatenated two varistors.
Varistor is a kind of votage limit type protection device, using the nonlinear characteristic of varistor, when overvoltage appears in
Two interpolars of varistor, varistor can be by voltage clampings to a relatively-stationary voltage value, to realize to rear class
The protection of circuit.That is when the voltage at varistor both ends is lower than itself threshold value, the electric current for flowing through it is minimum, presses at this time
Quick resistance is equivalent to the resistance of a resistance value infinity, can also regard the switch being in an off state as.On the contrary, working as pressure-sensitive electricity
When hindering the voltage at both ends higher than itself threshold value, the electric current for flowing through varistor increases sharply, and varistor is equivalent to a resistance value at this time
Infinitesimal resistance, can also regard the switch for being in closed state as, and the voltage at varistor both ends is maintained at one relatively
Fixed voltage value, at this time no matter curent change how many order of magnitude, the voltage at varistor both ends will remain unchanged as.So passing through
It is connected with varistor in the output end of electromagnetic interface filter, is equivalent to the output end peace in the circuit of DC power supply means for anti-jamming
Equipped with varistor, the effect of the voltage of the direct current of stable dc power supply means for anti-jamming output may be implemented in this way.
In an embodiment of the utility model, described device further include: at least one electrolytic capacitor；
At least one described electrolytic capacitor is in parallel with the output end of the electromagnetic interface filter.
In an embodiment of the utility model, the electrolytic capacitor be it is multiple, multiple electrolytic capacitors series connection and/or
Parallel connection, multiple electrolytic capacitors after series connection and/or parallel connection are in parallel with the output end of the electromagnetic interface filter.
Due to electrolytic capacitor not only with have the function of ordinary capacitor can charging and discharging, and have unit volume electricity
Capacity is very big and specified capacity can accomplish very big feature, since DC power supply means for anti-jamming requires storage capacitor
There is larger capacitance amount, so smooth voltage stabilizing function may be implemented in electrolytic capacitor.
In an embodiment of the utility model, described device further include: relay and at least two protective tubes；
The relay is connected to the output end of the electromagnetic interface filter, and the relay is also with described at least two
The input terminal of protective tube connects；
At least two protective tube is connected to the input terminal of the electromagnetic interface filter.
In an embodiment of the utility model, at least one protective tube and the EMI of at least two protective tube
The anode connection of the input terminal of filter；
Other protective tubes of at least two protective tube are connect with the cathode of the input terminal of the electromagnetic interface filter.
Since DC power supply means for anti-jamming is between DC power supply and electrical equipment, i.e., electrical equipment passes through direct current
Source means for anti-jamming obtains the power supply of DC power supply, so electrical equipment will when DC power supply means for anti-jamming breaks down
It can not work normally, to cause serious safety accident.By be provided in DC power supply means for anti-jamming relay and
Protective tube can ensure that electrical equipment can directly obtain the confession of DC power supply when DC power supply means for anti-jamming breaks down
Electricity, it is ensured that electrical equipment can work normally.
Second aspect, the utility model provide a kind of DC power supply jamproof system, comprising:
DC power supply, such as first aspect DC power supply means for anti-jamming described in the utility model and electrical equipment；
The DC power supply is connect with the input terminal of the DC power supply means for anti-jamming；
The electrical equipment is connect with the output end of the direct power supply means for anti-jamming.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the circuit diagram of electromagnetic interface filter in the prior art；
Fig. 2 is the schematic diagram for the DC power supply means for anti-jamming that an embodiment of the present invention provides；
Fig. 3 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides；
Fig. 4 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides；
Fig. 5 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides；
Fig. 6 is the schematic diagram for the DC power supply jamproof system that an embodiment of the present invention provides.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Electromagnetic interference (Electro Magnetic Interference, EMI) filter is used in the prior art, to vehicle
It carries the interference that electronic equipment generates to be inhibited, specifically, electromagnetic interface filter can be interfered with attenuation common-mode and the DM EMI that decays.
Wherein, Fig. 1 is the circuit diagram of electromagnetic interface filter in the prior art, as shown in Figure 1, common mode inductance Lc points in electromagnetic interface filter
Not in common mode capacitance Cy1, Cy2, Cy3, Cy4, for the common crosstalk between main track or negative wire and ground wire, consummately line is symmetrical for group
L-type filter circuit, play the role of attenuation common-mode interference.Differential mode inductance Ld and differential mode capacitor Cx2 in electromagnetic interface filter, needle
Differential mode crosstalk between match line and negative wire forms π type filter circuit, plays the role of the DM EMI that decays.Moreover, Ld is as poor
Mould inductance, while existing in the L-type filter circuit of common mode inductance Lc and common mode capacitance Cy composition, common mode filtering function is risen
Important function；Equally, the leakage inductance Le and common mode capacitance Cy of common mode inductance Lc exists in the π type filtering for differential mode crosstalk
In circuit, they also generate certain effect to differential mode filter effect simultaneously.
However, the common mode capacitor and differential mode capacitor device of existing electromagnetic interface filter can generate resonance, so that electromagnetic interface filter
The inhibiting effect of high-frequency interferencing signal is weakened, motor-car safe operation is influenced.
Based on above-mentioned problems of the prior art, the utility model provides a kind of DC power supply means for anti-jamming, should
Device has the function that inhibit high-frequency interferencing signal by the way that feedthrough capacitor is arranged on the basis of electromagnetic interface filter.It is practical using this
It is novel, can effectively filter out DC power supply interference in high frequency section, improve DC power supply be output to it is straight in electronic equipment
The quality of galvanic electricity.
When using the DC power supply means for anti-jamming of the utility model, the direct current in DC power supply passes through direct current first
Power supply means for anti-jamming is eliminated and is interfered due to caused by electrical equipment and external electromagnetic environment in direct current, then will be eliminated dry
Direct current after disturbing directly or indirectly is delivered to electrical equipment.
Fig. 2 is the schematic diagram for the DC power supply means for anti-jamming that an embodiment of the present invention provides, as shown in Fig. 2, this
The DC power supply means for anti-jamming of embodiment includes: electromagnetic interface filter and at least two feedthrough capacitors, and each feedthrough capacitor connects
Ground；At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter；Described at least two wear
Electrocardio holds for inhibiting high-frequency interferencing signal.
Since feedthrough capacitor grounded inductor is minimum, almost without the influence of lead-in inductance, and feedthrough capacitor is after mounting
The characteristics of its input/output terminal is isolated, and can eliminate high-frequency coupling, so feedthrough capacitor has extraordinary filter effect.Institute
With being equipped with feedthrough capacitor in DC power supply means for anti-jamming can achieve the mesh for eliminating the high-frequency interferencing signal of DC power supply
's.
In addition, feedthrough capacitor can be directly installed on the metal decking of DC power supply means for anti-jamming, the feedthrough capacitor
Its input/output terminal can be isolated by the metal decking after mounting.
In one embodiment, at least one feedthrough capacitor at least two feedthrough capacitor and the electromagnetic interface filter
Input terminal anode connection, the input of other feedthrough capacitors and the electromagnetic interface filter at least two feedthrough capacitor
The cathode at end connects.
In another embodiment, at least one feedthrough capacitor at least two feedthrough capacitor and the EMI are filtered
The anode of the output end of device connects, and other feedthrough capacitors at least two feedthrough capacitor are defeated with the electromagnetic interface filter
The cathode of outlet connects.
Wherein, Fig. 2 is shown with the quantity of feedthrough capacitor for two, respectively feedthrough capacitor C1 and feedthrough capacitor C2, and
The input terminal that feedthrough capacitor is connected to electromagnetic interface filter is to exemplify, as shown in Fig. 2, the input of feedthrough capacitor C1 and electromagnetic interface filter
The cathode of the input terminal of the anode connection at end, feedthrough capacitor C2 and electromagnetic interface filter connects.Feedthrough capacitor C1, feedthrough capacitor C2 can
To be directly installed on the metal decking of DC power supply means for anti-jamming, feedthrough capacitor and metallic shield box panel can use
It combines closely and plays High-frequency Interference buffer action.Wherein, metallic shield box panel can be the outer of DC power supply means for anti-jamming
Shell is made by the material with shielding action.By the way that feedthrough capacitor C1, feedthrough capacitor C2 are connected to by way of being spirally connected
On metallic shield box panel, since metal shielding box is connect with ground wire, so feedthrough capacitor C1, C2 are also grounding connection.By
It is dispersed in around center conductor in the range of 360 degree in earth-current, making feedthrough capacitor C1, C2, there is no lead-in inductances, guarantee to wear
Electrocardio holds C1, C2 and keeps good performance in very high band limits, that is, plays to high-frequency interferencing signal and inhibits to imitate well
Fruit.
Wherein, in view of the factors such as cost, the anti-jamming effectiveness of DC power supply means for anti-jamming, punching in the utility model
The quantity of capacitor is two best.Moreover, feedthrough capacitor is connected to the positive and negative anodes of the input terminal of electromagnetic interface filter, but wear
Electrocardio holds the positive and negative anodes that can also be connected to the input terminal of electromagnetic interface filter.But so number of the utility model to feedthrough capacitor
Amount and position are with no restrictions.
Fig. 3 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides, as shown in figure 3,
The DC power supply means for anti-jamming of the present embodiment includes: electromagnetic interface filter and at least two feedthrough capacitors, each feedthrough capacitor
Ground connection.At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter, and described at least two
Feedthrough capacitor is for inhibiting high-frequency interferencing signal.This partial content may refer to the description in embodiment illustrated in fig. 2, herein no longer
It repeats.
It can also include: at least one on the basis of the DC power supply means for anti-jamming embodiment shown in Fig. 2 of the present embodiment
A varistor；At least one described varistor is connected to the output end of the electromagnetic interface filter.At least one described pressure-sensitive electricity
It hinders and carries out overvoltage protection for the output end to the electromagnetic interface filter.
Varistor is a kind of votage limit type protection device, using the nonlinear characteristic of varistor, when overvoltage appears in
Two interpolars of varistor, varistor can be by voltage clampings to a relatively-stationary voltage value, to realize to rear class
The protection of circuit.That is when the voltage at varistor both ends is lower than itself threshold value, the electric current for flowing through it is minimum, presses at this time
Quick resistance is equivalent to the resistance of a resistance value infinity, can also regard the switch being in an off state as.On the contrary, working as pressure-sensitive electricity
When hindering the voltage at both ends higher than itself threshold value, the electric current for flowing through varistor increases sharply, and varistor is equivalent to a resistance value at this time
Infinitesimal resistance, can also regard the switch for being in closed state as, and the voltage at varistor both ends is maintained at one relatively
Fixed voltage value, at this time no matter curent change how many order of magnitude, the voltage at varistor both ends will remain unchanged as.So passing through
It is connected with varistor in the output end of electromagnetic interface filter, is equivalent to the output end peace in the circuit of DC power supply means for anti-jamming
Equipped with varistor, the effect of the voltage of the direct current of stable dc power supply means for anti-jamming output may be implemented in this way.
Wherein, the quantity of varistor is three, and the output end of a varistor and the electromagnetic interface filter closes
The output end of connection, other two described varistor series connection, concatenated two compression resistances and the electromagnetic interface filter is simultaneously
Connection.Junction ground connection between concatenated two varistors.
As shown in figure 3, three varistors are respectively CVR1, CVR2, CVR3.Wherein, varistor CVR1, CVR2 goes here and there
Connection, the varistor CVR1, varistor CVR2 after series connection are in parallel with the output end of electromagnetic interface filter, and by varistor
CVR1, varistor CVR2 are connected in series point and connect with ground wire.When positive and negative voltage is applied on varistor CVR1, CVR2
When voltage is lower than the threshold values of varistor CVR1, CVR2, the electric current for flowing through varistor CVR1, CVR2 is minimum, varistor resistance
It is worth high presentation open-circuit condition.When varistor CVR1, CVR2 both end voltage is higher than threshold values, the electric current for flowing through varistor swashs
Increase, resistance value, which declines rapidly, is connected high current of releasing, and makes the abnormal overvoltage often occurred in its suppression circuit, protects the circuit from
The damage of overvoltage, realize positive and negative power supply over the ground between over-voltage protection function.Varistor CVR3 and electromagnetic interface filter it is defeated
Outlet is in parallel, realizes over-voltage protection function between positive and negative power supply.When the electricity of the direct current of DC power supply means for anti-jamming output
When pressure is more than the threshold value of varistor, varistor CVR3 ensures the DC voltage of the output end of DC power supply means for anti-jamming
The voltage value of a comparatively safe fixation is maintained, guarantees the Electrical Safety of electrical equipment in high-speed EMUs, to make height
Fast EMU safe operation.
Wherein, the varistor of same model can be used in the utility model, but in practical applications, it can be according to pressure-sensitive
The varistor of the position of resistance and demand selection different model, but when selecting the varistor of same model, according to circuit
In varistor is selected to the peak demand of varistor.In addition the utility model does not limit quantity and the position of varistor,
It is selected according to concrete application demand.
Fig. 4 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides, as shown in figure 4,
The DC power supply means for anti-jamming of the present embodiment includes: electromagnetic interface filter and at least two feedthrough capacitors, each feedthrough capacitor
Ground connection.At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter, and described at least two
Feedthrough capacitor is for inhibiting high-frequency interferencing signal.This partial content may refer to the description in embodiment illustrated in fig. 2, herein no longer
It repeats.
The DC power supply means for anti-jamming of the present embodiment can also include: at least one electrolytic capacitor；It is described at least one
Electrolytic capacitor is in parallel with the output end of the electromagnetic interface filter.
Due to electrolytic capacitor not only with have the function of ordinary capacitor can charging and discharging, and have unit volume electricity
Capacity is very big and specified capacity can accomplish very big feature, since DC power supply means for anti-jamming requires storage capacitor
There is larger capacitance amount, so smooth voltage stabilizing function may be implemented in electrolytic capacitor.
Wherein, the quantity of the electrolytic capacitor can be multiple, multiple electrolytic capacitor series connection and/or in parallel, series connection
And/or multiple electrolytic capacitors after parallel connection are in parallel with the output end of the electromagnetic interface filter.
In addition, the quantity of electrolytic capacitor may be one, as shown in figure 4, electrolytic capacitor is C3.Electrolytic capacitor C3 with
The output end of electromagnetic interface filter is in parallel, is equivalent to the output end that DC power supply means for anti-jamming is arranged in electrolytic capacitor C3.Work as electrolysis
When capacitor C3 both end voltage is significantly larger than normal voltage value, electrolytic capacitor C3 can keep DC power supply anti-interference by absorbing electric energy
The voltage of the output end of device reduces；When electrolytic capacitor C3 both end voltage is well below circuit normal voltage value, electrolytic capacitor
The voltage raising that C3 can make the output end of DC power supply means for anti-jamming by discharging electric energy, makes DC power supply means for anti-jamming
The voltage smooth change of the direct current of output is simultaneously maintained at safe handling range, and it is anti-to DC power supply dry to reduce alternation pulse ripple
The voltage fluctuation disturbing the influence of device, while being generated in the also absorbable DC power supply means for anti-jamming course of work with via exchanging
The interference that power supply seals in, so that the working performance of DC power supply means for anti-jamming is more stable.
Wherein, in the present invention in view of the factors such as cost, the volume of DC power supply means for anti-jamming, electrolytic capacitor
Quantity be one best.But in actual use, the quantity of electrolytic capacitor can be multiple, and the utility model does not limit
Connection type between multiple electrolytic capacitors.
In addition, DC power supply means for anti-jamming shown in Fig. 4 can also include: at least one varistor；It is described at least
One varistor is connected to the output end of the electromagnetic interface filter.At least one described varistor is used to filter the EMI
The output end of device carries out overvoltage protection.The associated description that may refer in embodiment illustrated in fig. 3 is specifically described, it is no longer superfluous herein
It states.
Wherein, at least one varistor can be set electromagnetic interface filter output end and at least one electrolytic capacitor it
Between, but it is not limited to this.
Fig. 5 is the schematic diagram for the DC power supply means for anti-jamming that another embodiment of the utility model provides, as shown in figure 5,
The DC power supply means for anti-jamming of the present embodiment includes: electromagnetic interface filter and at least two feedthrough capacitors, each feedthrough capacitor
Ground connection.At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter, and described at least two
Feedthrough capacitor is for inhibiting high-frequency interferencing signal.This partial content may refer to the description in embodiment illustrated in fig. 2, herein no longer
It repeats.
The DC power supply means for anti-jamming of the present embodiment can also include: relay and at least two protective tubes.It is described after
Electric appliance is connected to the output end of the electromagnetic interface filter, and input terminal of the relay also at least two protective tube
Connection.At least two protective tube is connected to the input terminal of the electromagnetic interface filter.
Since DC power supply means for anti-jamming is between DC power supply and electrical equipment, i.e., electrical equipment passes through direct current
Source means for anti-jamming obtains the power supply of DC power supply, so electrical equipment will when DC power supply means for anti-jamming breaks down
It can not work normally, to cause serious safety accident.By be provided in DC power supply means for anti-jamming relay and
Protective tube can ensure that electrical equipment can directly obtain the confession of DC power supply when DC power supply means for anti-jamming breaks down
Electricity, it is ensured that electrical equipment can work normally.
Wherein, the anode of the input terminal of at least one protective tube and electromagnetic interface filter of at least two protective tube
Connection；Other protective tubes of at least two protective tube are connect with the cathode of the input terminal of the electromagnetic interface filter.
It wherein, is two to exemplify with the quantity of protective tube, as shown in figure 5, relay is Ka, protective tube is respectively F1
And F2.The input terminal 7 of relay Ka is connect with the anode of the output end of electromagnetic interface filter, and the output end 8 and EMI of relay Ka is filtered
The cathode of the output end of wave device connects, and is equivalent to the output end that DC power supply means for anti-jamming is arranged in relay Ka.Protective tube
F1, protective tube F2 are connected to the anode and cathode of the input terminal of electromagnetic interface filter, are equivalent to protective tube F1, protective tube F2 is set
Set the input terminal in DC power supply means for anti-jamming.When DC power supply means for anti-jamming is in normal operating conditions, relay
Ka has electric current to pass through, and so that relay Ka is kept attracting state, that is, the direct current by DC power supply means for anti-jamming passes through relay
Normally opened contact 4, normally opened contact 6 (anode) and normally opened contact 1, (cathode) out-put supply of normally opened contact 3 of device Ka is electrical equipment
Power supply.When overcurrent or short circuit occur for DC power supply means for anti-jamming, protective tube F1 or protective tube F2 fusing lead to DC power supply
Means for anti-jamming can not out-put supply, relay Ka do not have electric current to pass through, remains off relay Ka, that is, direct current
DC power supply means for anti-jamming is not passed through in source, but passes through the normally-closed contact 4 of relay Ka, normally-closed contact 5 (anode) and normal
Closed contact 1, normally-closed contact 2 (cathode) directly out-put supply are power supply for electrical equipment, by DC power supply means for anti-jamming circuit
Road.
Wherein, protective tube F1 and protective tube F2 shown in fig. 5 are also connect with the output end of feedthrough capacitor, such as can also will be protected
Before dangerous pipe F1, F2 are separately mounted to threading capacitor C1, C2, but it is to ensure that the contact 5 of relay Ka is accessed before protective tube F1,
The contact 3 of relay Ka is accessed before protective tube F2.But the utility model does not limit to be protected in DC power supply means for anti-jamming circuit
The position of dangerous pipe F1, F2 in DC power supply means for anti-jamming circuit, in addition, the utility model is not limited in practical application directly
The quantity of protective tube in the means for anti-jamming of galvanic electricity source.
Further, it whether is in state in normal work for detection DC power supply means for anti-jamming, it is anti-in DC power supply
The output end of countermeasure set can also connect a detection device, and detection device can detecte galvanic electricity source means for anti-jamming output end
Current Voltage state, thus one feedback signal of output, for prompting the working condition of direct current means for anti-jamming, when direct current is anti-dry
It disturbs and exports high level when device is in normal operating conditions, when malfunction exports low level.
In addition as shown in figure 5, DC power supply means for anti-jamming can also include: at least one varistor；It is described at least
One varistor is connected to the output end of the electromagnetic interface filter.At least one described varistor is used to filter the EMI
The output end of device carries out overvoltage protection.The associated description that may refer in embodiment illustrated in fig. 3 is specifically described, it is no longer superfluous herein
It states.
In addition as shown in figure 5, DC power supply means for anti-jamming can also include: at least one electrolytic capacitor.It is described at least
One electrolytic capacitor is in parallel with the output end of the electromagnetic interface filter.Specifically describe the correlation that may refer in embodiment illustrated in fig. 4
Description, details are not described herein again.
In addition, the DC power supply means for anti-jamming of the utility model can effectively press down by adjusting the parameter value of each component
The interference of the direct current of the DC power supply output of any voltage value processed.Wherein, with the anti-interference dress of the DC power supply of the utility model
Set inhibit EMU on voltage be 110V DC power supply in interference for, the parameter value of each component, punching in explanatory diagram 5
Capacitor C1, C2 parameter is all 1000pF, and it is all 1uF that difference, which touches capacitor Cx1, Cx2 parameter, flows through the upper current limit of protective tube F1, F2
It is all 5A, the parameter of common mode inductance Lc is 0.9mH, and it is all 0.033uF, differential mode that difference, which touches the parameter of capacitor Cy1, Cy2, Cy3, Cy4,
The parameter of inductance Ld is all 1.4mH, and the model parameter of varistor CVR1, CVR2, CVR3 are all 10D471K, electrolytic capacitor C3
Parameter be 450V/220uF.
It should be noted that electromagnetic interface filter may refer to the phase of electromagnetic interface filter in the prior art in stating any embodiment
Description is closed, details are not described herein again.Such as the electromagnetic interface filter in the utility model may refer to shown in Fig. 1.
Fig. 6 is the schematic diagram for the DC power supply jamproof system that an embodiment of the present invention provides, as shown in fig. 6, this
The DC power supply jamproof system of embodiment may include: DC power supply, DC power supply means for anti-jamming and electrical equipment.Wherein
DC power supply means for anti-jamming can be directly connected to electrical equipment, can also be indirectly connected with, such as DC power supply means for anti-jamming
It is directly connect with electrical equipment, direct current is fed directly to electrical equipment；DC power supply means for anti-jamming can also pass through socket
Etc. equipment be indirectly connected with electrical equipment, first direct current is transported in socket, electricity is then delivered to by electricity consumption by socket and is set
In standby.
Wherein, DC power supply means for anti-jamming can use the structure of Fig. 2~Fig. 5 any device embodiment, realize former
Reason is similar with technical effect, and details are not described herein again.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of DC power supply means for anti-jamming characterized by comprising
Electromagnetic interference electromagnetic interface filter and at least two feedthrough capacitors, each feedthrough capacitor ground connection；
At least two feedthrough capacitor is connected to the input terminal and/or output end of the electromagnetic interface filter；
At least two feedthrough capacitor is for inhibiting high-frequency interferencing signal.
2. the apparatus according to claim 1, which is characterized in that at least one punching at least two feedthrough capacitor
The anode of capacitor and the input terminal of the electromagnetic interface filter connect, other feedthrough capacitors at least two feedthrough capacitor and
The cathode of the input terminal of the electromagnetic interface filter connects.
3. the apparatus according to claim 1, which is characterized in that at least one punching at least two feedthrough capacitor
The anode of capacitor and the output end of the electromagnetic interface filter connect, other feedthrough capacitors at least two feedthrough capacitor and
The cathode of the output end of the electromagnetic interface filter connects.
4. device according to claim 1-3, which is characterized in that further include: at least one varistor；It is described
At least one varistor is connected to the output end of the electromagnetic interface filter；
At least one described varistor is used to carry out overvoltage protection to the output end of the electromagnetic interface filter.
5. device according to claim 4, which is characterized in that the varistor is three, a varistor
It is in parallel with the output end of the electromagnetic interface filter, other two described varistor series connection, concatenated two varistors with
The output end of the electromagnetic interface filter is in parallel；
Junction ground connection between concatenated two varistors.
6. device according to claim 1-3, which is characterized in that further include: at least one electrolytic capacitor；
At least one described electrolytic capacitor is in parallel with the output end of the electromagnetic interface filter.
7. device according to claim 6, which is characterized in that the electrolytic capacitor is multiple, multiple electrolytic capacitors
Series connection and/or parallel connection, multiple electrolytic capacitors after series connection and/or parallel connection are in parallel with the output end of the electromagnetic interface filter.
8. device according to claim 1-3, which is characterized in that further include: relay and at least two insurances
Pipe；
The relay is connected to the output end of the electromagnetic interface filter, and the relay also insures with described at least two
The input terminal of pipe connects；
At least two protective tube is connected to the input terminal of the electromagnetic interface filter.
9. device according to claim 8, which is characterized in that at least one protective tube of at least two protective tube with
The anode connection of the input terminal of the electromagnetic interface filter；
Other protective tubes of at least two protective tube are connect with the cathode of the input terminal of the electromagnetic interface filter.
10. a kind of DC power supply jamproof system characterized by comprising
The described in any item DC power supply means for anti-jammings of DC power supply, such as claim 1-9 and electrical equipment；
The DC power supply is connect with the input terminal of the DC power supply means for anti-jamming；
The electrical equipment is connect with the output end of the DC power supply means for anti-jamming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784622.1U CN208209816U (en) | 2018-05-24 | 2018-05-24 | DC power supply means for anti-jamming and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784622.1U CN208209816U (en) | 2018-05-24 | 2018-05-24 | DC power supply means for anti-jamming and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208209816U true CN208209816U (en) | 2018-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820784622.1U Active CN208209816U (en) | 2018-05-24 | 2018-05-24 | DC power supply means for anti-jamming and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208209816U (en) |
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2018
- 2018-05-24 CN CN201820784622.1U patent/CN208209816U/en active Active
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