CN208636402U - Detect the electron assistant contact circuit of high-voltage relay contact on-off - Google Patents
Detect the electron assistant contact circuit of high-voltage relay contact on-off Download PDFInfo
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- CN208636402U CN208636402U CN201821111001.3U CN201821111001U CN208636402U CN 208636402 U CN208636402 U CN 208636402U CN 201821111001 U CN201821111001 U CN 201821111001U CN 208636402 U CN208636402 U CN 208636402U
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Abstract
The utility model discloses a kind of electron assistant contact circuits for detecting high-voltage relay contact on-off, including high-voltage relay contact, it further include input power preprocessing module, isolated power supply module, relay contact detecting module, contacts status information isolation output module and relay Industrial detection indicating circuit, relay Industrial detection indicating circuit includes the contact connection indicating circuit module that indicator light is connected equipped with relay contact and the relay magnetic survey indicating circuit module equipped with relay coil driving indicator light；Isolated power supply module rear class exports detection power module, and isolated power supply module prime is electrically connected with direct-current input power supplying, and auxiliary contact two-terminal is isolated output module output end with contact connection information and is electrically connected.Effective monitoring can be carried out to high-voltage relay high-voltage contact on-off information state, obtain high-voltage contact on-off information state and indicate, provided for equipment operation and trouble hunting and accurately and reliably effectively analyze and determine information, improve service life.
Description
Technical field
The utility model relates to a kind of electron assistant contact relays, are related to a kind of integrated detection touching of direct-current high-voltage relay
The electron assistant contact circuit of point on-off, more particularly, to a kind of high-voltage contact for being used in detection senses direct-current high-voltage relay
The electron assistant contact circuit of the detection high-voltage relay contact on-off of electrical characteristics on-off information state.
Background technique
It usually can all use direct-current high-voltage relay in the equipment such as electric car, charging pile, convertible frequency air-conditioner, and mesh
Before be used in " the main contacts electrical property notification " function of direct-current high-voltage relay not truly in these equipment, equipment
System is difficult to obtain contact on-off whether normal information when doing information collection, Intelligent self-checking.Such as: relay coil is to electricity
, contact cannot be connected either with or without conducting, contact carbonization；In addition, the electricity went off for relay coil, electrical source of power either with or without
Cutting, if relay " contact adhesion " is not switched off.The unit status that intelligentized equipment is required to acquisition confirmation itself is good
Whether good.There is readme that there is the relay of " auxiliary contact " currently on the market, only one small switch of dynamic iron core mechanical linkage, no
Have " main contacts electrical property notification " function, if with its so-called " auxiliary contact " as relay contact on-off information collection,
When very needing to report extremely to main contacts carbonization or adhesion situation, the information that it gives is unpractiaca.
Utility model content
The utility model is that there is cannot be to relay in high pressure on-off work shape for the existing direct-current high-voltage relay of solution
Effective monitoring obtains the high-voltage contact on-off information state of high-voltage relay under state, is unfavorable for control and improves high-voltage relay use
The statuses such as reliability and service life and provide it is a kind of can the high-voltage contact on-off information state to high-voltage relay have
Effect monitoring, effectively obtains the on-off information state of two high-voltage contacts of high-voltage relay, provides for equipment operation and trouble hunting
Accurate and reliable effective analytical judgment information, improves the use reliability of high-voltage relay and the electron assistant contact of service life
Circuit.A kind of detection high pressure for the high-voltage contact electrical characteristics on-off information state being used in detection senses direct-current high-voltage relay after
The electron assistant contact circuit of appliance contact on-off.
The utility model is used the specific technical proposal is: a kind of detection high-voltage relay to solve above-mentioned technical problem
The electron assistant contact circuit of contact on-off, including high-voltage relay contact, electron assistant contact circuit, it is characterised in that: also
Including input power preprocessing module, isolated power supply module, 12V detection power module, relay contact detecting module, contact
Status information is isolated output module and relay Industrial detection indicating circuit, relay Industrial detection indicating circuit include be equipped with after
Indicating circuit module and the relay magnetic equipped with relay coil driving indicator light are connected in the contact that appliance contact connects indicator light
Power detects indicating circuit module；Isolated power supply module prime is electrically connected with direct-current input power supplying, and isolated power supply module rear class is defeated
Power supply is used in 12V detection out；Electron assistant contact two-terminal is isolated output module output end with contact connection information and is electrically connected.It can
Effective monitoring is carried out to the high-voltage contact on-off information state of high-voltage relay, effectively obtains two high-voltage contacts of high-voltage relay
On-off information state and obtain state change instruction warning in time, provided for equipment operation and trouble hunting accurate and reliable effective
Analytical judgment information.
Preferably, the input power preprocessing module include the insurance of F2 self- recoverage, D1 diode, D2 diode,
D3 diode, D4 diode, R3 resistance, C1 capacitor, VZ7 zener diode, Q1 triode, C14 capacitor, D1 diode, D2 bis-
Pole pipe, D3 diode and D4 diode form full-bridge circuit, and direct-current input power supplying polarity misconnection is effectively avoided to burn the wind of circuit
Danger.R3 resistance, C1 capacitor, VZ7 zener diode, Q1 triode, C14 capacitor form simple decompression voltage regulator, input it is straight
9 ~ 60VDC of galvanic electricity source simply drops pressure stabilizing in 9V ~ 18V, is exported by Q1 transistor emitter, C14 capacitor plays the role of burning voltage.
Preferably, the isolated power supply module includes isolating transformer B2, the 18th optical coupling isolator, the 17th pressure stabilizing
Device, DC-DC buck-boost chip U1 and full-wave rectification bridge, DC-DC buck-boost chip U1 input terminal and input power pre-process
The 1st transistor emitter of output end of module is electrically connected, and the 1st transistor collector is mutually electrically connected with full-wave rectification bridge output end
It connects, full-wave rectification bridge input terminal is electrically connected with direct-current input power supplying, isolating transformer B2 input terminal and DC-DC boost chip
Input terminal is in parallel with output end and connect, and the 18th optical coupling isolator output end emitter pin and DC-DC boost chip U1 are fed back
Pin electrical connection is held, is electrically connected with detection with power ground after the 69th resistance of DC-DC boost chip U1 feedback end pin serial connection, the
18 optical coupling isolator output end collector pins and the input terminal of DC-DC boost chip are electrically connected, and the 18th optical coupling isolator is defeated
Enter Dragon Boat Festival pole the 26th diode of connecting again after the 70th resistance of connecting to be followed by isolating transformer B2 output end, the 26th diode cathode
It is electrically connected with the 70th resistance, the isolating transformer B2 output end other end and detection are electrically connected with power ground, the 26th diode
Series connection node that cathode and the 70th resistance are connected in series and detection are with being parallel with the 16th capacitor between power ground.It improves detection and uses electricity
The reliable and stable validity in source reduces disturbing factor.
Preferably, the relay magnetic survey indicating circuit module include the 7th light emitting diode, the 2nd resistance and
After Hall switch U2, the 7th light emitting diode and the series connection of the 2nd resistance, the 7th light-emitting diodes tube cathode and Hall switch U2 output end phase
Electrical connection.Hall switch U2 induction field, relay coil power on, and Hall switch U2 senses magnetic field signal, Hall switch
The crus secunda output end of U2 powers on cathode, connects the 7th light emitting diode red colored lamp and lights, improves and drive to relay coil
Power-up state indicates reliable validity, simple and convenient effective.
Preferably, indicating circuit module is connected in the contact includes the 4th resistance, the 8th light emitting diode,
After 4th resistance is connected with the 8th light emitting diode, the cathode of the 8th light emitting diode connects detection power ground.4th resistance
The 3rd transistor collector of output end of the other end and relay contact detecting module be electrically connected, relay contact is connected, defeated
Electric current lights the 8th light emitting diode out.The 2nd triode, the 3rd triode, the 4th resistance, the 8th hair of relay contact detecting module
Optical diode, the 20th optical coupling isolator and the 1st capacitor, the 2nd transistor collector are connected in series with the 3rd transistor emitter, the 3rd hair
Emitter collector pole is sequentially connected in series after the 4th resistance, the 8th light emitting diode and is electrically connected with detection with power module cathode, the 2nd three pole
Pipe emitter and detection are electrically connected with power module anode 12V power supply, the 3rd transistor emitter and the 20th optical coupling isolator
Input terminal anode is electrically connected, negative with power module with detection after input terminal cathode the 75th resistance of series connection of the 20th optical coupling isolator
Pole is electrically connected；Two stationary contacts of high-voltage relay are connected on the 2nd three pole respectively
It manages, in the base loop of the 3rd triode.It improves relay sound contact and connects the reliable convenient validity of instruction.
Preferably, the relay contact detecting module includes the 2nd triode of enter line side detection circuit, the 28th 2 pole
Pipe, the 73rd resistance, the 30th diode, the 6th diode, J_A socket, the 3rd triode of outgoing line side detection circuit, the 9th diode, the
74 resistance, the 31st diode, the 11st diode, J_B socket, the 77th resistance of common return, the 29th diode, the 10th diode,
J_D socket, relay contact enter line side contact are drawn signal detection line signal 1 and are connect with contact end of probe J-A, visit with contact
Slowdown monitoring circuit tandem high pressure diode D6, D30, the cathode contacts point end of high-voltage diode D6, the positive contact of high-voltage diode D30
Point detection circuit end；Relay contact outgoing line side contact is drawn signal detection line signal 2 and is connect with contact end of probe J-B, with touching
Point detection circuit tandem high pressure diode D11, D31, the cathode contacts point end of high-voltage diode D11, the sun of high-voltage diode D31
Pole contact point detection circuit end；Relay movable contact draws signal detection line signal 3 and contact detection route common return J-D connects
It connects.Relay contact disconnects, and movable contact is separated with stationary contact, by the same of bilateral high-voltage diode between the stationary contact of inlet-outlet line two sides
It is blocked to isolation, pressure-resistant and insulation safety is reliable between guaranteeing two contacts.
Preferably, the base loop of the 2nd triode and the 3rd triode includes enter line side diode, outgoing line side
Diode, the 73rd resistance, the 74th resistance, the 28th diode and the 9th diode, enter line side diode are connected with the 73rd resistance, the
Again with the 28th Diode series, the 28th diode anode is electrically connected 73 resistance with the 2nd transistor base, enter line side diode yin
Pole is electrically connected with relay enter line side stationary contact；Outgoing line side diode is connected with the 74th resistance, the 74th resistance again with the 9th two pole
Pipe series connection, the 9th diode anode are electrically connected with the 3rd transistor base, and outgoing line side diode cathode and relay outgoing line side are quiet
Contact is electrically connected.It improves base loop sampling and obtains reliable validity, improve and block external high pressure protective action, reduce damage
Phenomenon of the failure occurs.
Preferably, the enter line side diode uses two diode anode and cathodes of the 6th diode and the 30th diode
It is mutually connected in series, the 6th diode cathode is electrically connected with relay enter line side stationary contact；Outgoing line side diode uses the 11st 2
Pole pipe is mutually connected in series with two diode anode and cathodes of the 31st diode, the 11st diode cathode and relay outgoing line side stationary contact
Point is electrically connected.It improves and blocks external high pressure protective action, reduction damages phenomenon of the failure.
Preferably, the 28th diode cathode is electrically connected with the 29th diode, the 29th diode anode and detection
It is electrically connected with power module power ground；9th diode cathode is electrically connected with the 10th diode, the 10th diode anode
It is electrically connected with detection with power module power ground.It improves and blocks external high pressure protective action, reduction damages phenomenon of the failure.
Preferably, the 1st transistor base and detection be parallel between power module power ground voltage-stabiliser tube and
1st capacitor, the 1st transistor emitter and detection are with being parallel with the 14th capacitor between power module power ground；18th light-coupled isolation
With the 17th voltage-stablizer is parallel between power module power ground, the 18th optical coupling isolator input terminal is negative for device input terminal cathode and detection
Pole is sequentially connected in series after the 15th capacitor and the 71st resistance and is electrically connected with detection with power module positive pole.It is steady to improve isolated power supply
Determine reliability.
Preferably, the 17th voltage-stablizer is adjustable three end-apparatus, the adjustable side pin serial connection of the 17th voltage-stablizer the
It is electrically connected and is connect with power module power ground with detection after 72 resistance, after the 71st resistance of adjustable side pin serial connection of the 17th voltage-stablizer
It is electrically connected with detection with power module positive pole.Improve isolated power supply reliability.
The beneficial effects of the utility model are: can the high-voltage contact on-off information state to high-voltage relay effectively supervised
Control effectively obtains the on-off information state of two high-voltage contacts of high-voltage relay and obtains state change instruction warning in time and accuses
Know, provides accurate and reliable effective analytical judgment information for equipment operation and trouble hunting, improve the both ends " auxiliary contact " S1, S2
The variation of resistance value, report be main contacts electrical characteristics switching information output, can be used as the signal acquisition of low-voltage control circuit,
Improve the use reliability and service life of direct-current high-voltage relay.Or adhesion non-conductive for contact carbonization does not power off, normally
Conducting and disconnection, what is all perceived is true
It is vivid to cut, and report is transmitted in a manner of auxiliary contact.The electron assistant contact circuit of the utility model is installed in
Matched high-voltage relay structure makes optical coupling isolator output end and random or remote supervisory and control(ling) equipment in electron assistant contact circuit
It mutually monitors, perfect combination is traditional relay function 1+1 at " electron assistant contact relay ", and " auxiliary contact " both ends are defeated
It out, is the live broadcast of main contacts, information is accurate and reliable.If user is in need random or long-range verification relay operating status
Demand, selection this " electron assistant contact relay ", user and equipment designer can be allowed happily to be satisfied with.Supplementary contact on-off letter
The high voltage direct current relay of sensing function is ceased, wherein the both ends title of electron assistant contact circuit isolation output says " auxiliary touching
The electron assistant contact circuit of point ", detection high-voltage relay contact on-off is installed in matched high-voltage relay structure, and perfect group
Synthesis " relay with electron assistant contact ", therefore, title " electron assistant contact relay ".It has with lower terminal: line
Enclose power input (red line+, black line -)；Detecting module power input (pink colo(u)r streak+, grey lines -)；High pressure stationary contact is defeated
Out (it is flat bury nut retainer+, flat bury nut retainer -)；Auxiliary contact export (two white wires, without positive and negative).
Detailed description of the invention:
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the circuit principle structure of the electron assistant contact circuit of the utility model detection high-voltage relay contact on-off
Block diagram representation.
Fig. 2 is the circuit structure signal of the electron assistant contact circuit of the utility model detection high-voltage relay contact on-off
Figure.
Fig. 3 is relay construction schematic diagram used in Fig. 2 circuit structure.
Specific embodiment
In Fig. 1, embodiment shown in Fig. 2, a kind of electron assistant contact detection electricity detecting high-voltage relay contact on-off
Road, including 60 contact of high-voltage relay further include isolated power supply module 10, detection power module 20, relay contact detection
Module 90, relay contact detecting module are electrically connected with three line of relay contact, contact connects information and output module 50 is isolated
With relay Industrial detection indicating circuit, relay Industrial detection indicating circuit includes being equipped with relay contact to connect indicator light
The contact of D8 connects indicating circuit module 40 and is equipped with the relay magnetic survey instruction of relay coil driving indicator light D7
Circuit module 30；Isolated power supply module rear class exports detection power supply 20,10 prime of isolated power supply module and 9V to 60V input electricity
Source preprocessing module 80 is electrically connected, and auxiliary contact two-terminal 70 connects information with contact and 50 output end of output module mutually electricity is isolated
Connection.Auxiliary contact two-terminal, which is picked out using conducting wire to information collection, remotely to be monitored or with machine monitoring, can be according to actual monitored need
It asks and is selected by user: auxiliary contact two-terminal 70 can for example be connect in low-voltage circuit, information collection is used for, by auxiliary contact two
The first output contact S1 in terminal 70 meets+5V, the second output contact S2 series connection below-center offset resistance 5K to ground, such second
The low and high level of output contact S2 is exactly the on-off information of relay contact, high-logical, low-disconnected；User can also cooperate field to imitate
Should pipe metal-oxide-semiconductor composition one or more either synchronously or asynchronously switched with relay.In short, user can be with flexible Application.Auxiliary contact
Two-terminal is electrically connected with two test pens of ohmmeter, and the resistance change between auxiliary contact both ends S1 and S2 can be detected,
Resistance value is less than 50 Ω when high-voltage relay contact is connected, and resistance value is infinitely great when high-voltage relay contact disconnects.This circuit is made as
One wiring board.It is mounted in relay shell body and (designs reserved space in relay inner cavity).Form a complete relay, name
Claim " auxiliary contact relay ", there are two main contacts ends for the relay output end: enter line side (inside burying nut) and outgoing line side (inside bury
Nut)；Two auxiliary contact ends: two conducting wires.In text and principle S1, S2 described in figure are two terminals, and S1 is electrically connected light
3 feet of coupling solid-state relay U20；4 feet of S2 electrical connection optocoupler solid-state relay U20.Two conducting wires of auxiliary contact output provide
The low pressure awareness apparatus of user is connected for the judgement to main contacts switching to user.Stationary contact group is installed on relay
Part and movable contact spring 05, installation, which is connected with, on movable contact spring returns power spring 04 and movable contact signal wire J-d, movable contact spring 05 and quiet output group
Ceramic cavity 03 is installed between part, quiet output precision includes enter line side stationary contact component 01 and outgoing line side stationary contact component 02,
Installation is connected with enter line side stationary contact signal wire J-a on enter line side stationary contact component 01, installs on outgoing line side stationary contact component 02
It is connected with outgoing line side stationary contact signal wire J-b, enter line side stationary contact signal wire J-a, outgoing line side stationary contact signal wire J-b and dynamic touching
Point signal wire J-d respectively be mounted on electron assistant contact circuit in relay (though do not drawn especially in Fig. 3, it is entire to examine
Survey is integral installation in relay with electronics auxiliary contact circuit) relay enter line side stationary contact J-A, relay goes out
Line side stationary contact J-B and the corresponding electrical connection of relay movable contact J-D.
Relay magnetic survey indicating circuit module includes the 7th light emitting diode D7, the 2nd resistance R2 and Hall switch U2,
After 7th light emitting diode D7 and the 2nd resistance R2 series connection, the 7th light emitting diode D7 cathode is mutually electrically connected with Hall switch U2 output end
It connects.Hall switch induction field, relay coil power on, and magnetic field strength opens Hall switch, connect the 7th light emitting diode D7
Red colored lamp is lighted.Contact connects indicating circuit module and shines including the 2nd triode Q2, the 3rd triode Q3, the 4th resistance R4, the 8th
Diode D8, the 20th optical coupling isolator U20 and the 1st capacitor C1, the 2nd triode Q2 collector and the 3rd triode Q3 emitter phase
Series connection, the 3rd emitter Q3 collector are born after being sequentially connected in series the 4th resistance R4, the 8th light emitting diode D8 with detection power module
Pole-VO is electrically connected, and the 2nd triode Q2 emitter and detection are electrically connected with power module anode+12V, the 3rd triode Q3 hair
The 1st pin of input terminal anode of emitter-base bandgap grading and the 20th optical coupling isolator U20 is electrically connected, the input terminal of the 20th optical coupling isolator U20
It is electrically connected with detection with power module cathode after the 75th resistance R75 of cathode series connection；Two stationary contacts of high-voltage relay are gone here and there respectively
It is associated in the base loop of the 2nd triode, the 3rd triode.20th optical coupling isolator U20 photoelectric coupled device is also possible to solid-state
Relay, regardless of direction, load capacity when the 3rd pin of output, the 4th pin of the 20th optical coupling isolator U20 connect circuit
0.13A.Isolated power supply module includes isolating transformer B2, the 18th optical coupling isolator U18, the 17th voltage-stablizer U17, DC-DC boosting
Chip U1 and full-wave rectification bridge, full-wave rectification bridge is by the 1st diode, the 2nd diode, the 3rd diode and common group of the 4th diode
Close and constitute, DC-DC boost chip U1 input terminal is electrically connected with the 1st triode Q1 emitter, the 1st triode Q1 collector with entirely
Wave rectification bridge output end is electrically connected, the input terminal and output end phase of isolating transformer B2 input terminal and DC-DC boost chip U1
It being connected in parallel, the 18th optical coupling isolator U18 output end emitter pin is electrically connected with DC-DC decompression chip U1 feedback end pin,
It is electrically connected with detection with power module power ground after DC-DC decompression the 69th resistance R69 of chip U1 feedback end pin serial connection, the 18th
Optical coupling isolator U18 output end collector pin and the input terminal of DC-DC decompression chip U1 are electrically connected, the 18th optical coupling isolator
The 26th diode D26 that connects again after the 70th resistance R70 of U18 input terminal anode series connection is followed by isolating transformer B2 output end, the
26 diode D26 cathodes are electrically connected with the 70th resistance R70, the isolating transformer B2 output end other end and detection power module
Power ground is electrically connected, the series connection node that the 26th diode D26 cathode and the 70th resistance R70 are connected in series and detection power module
The 16th capacitor C16 is parallel between power ground.After 1st resistance R1 and the 5th Diode series with isolating transformer B2 input terminal phase
Parallel connection, the 5th diode anode are electrically connected with DC-DC decompression chip U1 output end.Isolating transformer B2 is high frequency transformer device,
First pole isolation, isolation voltage are exchanged greater than 2750V.DC-DC is depressured chip U1, error amplification adjustment chip U17 and isolation and becomes
Depressor B2 combination generates a detection power module power supply+12V in the isolation of the 16th capacitor both ends.2nd triode Q2 and
The base loop of 3 triode Q3 includes enter line side diode, outgoing line side diode, the 73rd resistance R73, the 74th resistance R74, the 28th
Diode D28 and the 9th diode D9, enter line side diode are connected with the 73rd resistance R73, the 73rd resistance R73 again with the 28th 2 pole
Pipe D28 series connection, the 28th diode D28 anode are electrically connected with the 2nd triode Q2 base stage, enter line side diode cathode and relay
Enter line side stationary contact J-A is electrically connected；Outgoing line side diode is connected with the 74th resistance, the 74th resistance again with the 9th Diode series,
9th diode anode is electrically connected with the 3rd transistor base, outgoing line side diode cathode and relay outgoing line side stationary contact J-B
It is electrically connected.Movable contact J-D ground terminal and detection are electrically connected with power module power ground in relay；Enter line side diode
Mutually be connected in series using two diode anode and cathodes of the 6th diode D6 and the 30th diode D30, the 6th diode D6 cathode with
Relay enter line side stationary contact J-A is electrically connected；Outgoing line side diode uses the 11st diode D11 and the 31st diode D31 two
A diode anode and cathode is mutually connected in series, and the 11st diode D11 cathode is electrically connected with relay outgoing line side stationary contact J-B.
28th diode D28 cathode is electrically connected with the 29th diode D29, the 29th diode D29 anode and detection power module power supply
Ground is electrically connected；The 9th diode D9 cathode is electrically connected with the 10th diode D10, the 10th diode D10 anode and detection
It is electrically connected with power module power ground.Stationary contact J-D and relay enter line side stationary contact J-A and relay outlet in relay
Side stationary contact J-B phase moving contact or disconnection.28th diode D28, the 30th diode D30, the 6th diode D6, the 9th in circuit
The effect of diode D9, the 31st diode D31, the 11st diode D11, the 10th diode D10 and the 29th diode D29 are to be
External high pressure is blocked to harass, multiple anti-interference protection improves and detects reliable and stable validity.1st triode Q1 base stage and detection
With being parallel with voltage-stabiliser tube ZV7 and the 1st capacitor C1 between power module power ground, the 1st triode Q1 emitter and detection power supply
The 14th capacitor C14 is parallel between modular power source ground；18th optical coupling isolator U18 input terminal cathode and detection power module electricity
Error amplification adjustment chip U17 is parallel between the ground of source, the 18th optical coupling isolator U18 input terminal cathode is sequentially connected in series the 15th capacitor
It is electrically connected with detection with power module positive pole after C15 and the 71st resistance R71.The control input of error amplification adjustment chip
It is electrically connected and is connect with power module power ground with detection after the 72nd resistance R72 of pin serial connection of end, error amplification adjustment chip U17's
It is electrically connected with detection with power module positive pole after the 71st resistance R71 of control signal pin serial connection.
Circuit work when, isolated power supply module 10 the 16th both ends capacitor C16 establish+12V isolated power supply be it is upper just
It is lower negative.16th capacitor C16 just-the 2nd triode Q3 of triode Q2-the 3rd-(the 4th light emitting diode of resistance R4-the 8th D8 blue
Lamp) in parallel (1, the 2 resistance R75 of foot-the 75th of the 20th optical coupling isolator U20)) the-the 16th capacitor C16 is negative collectively forms circuit, it takes
Name " circuit 1 "；Two stationary contacts of high-voltage relay are connected in the base loop of the 2nd triode Q2 and the 3rd triode Q3: 1
Road are as follows: the 16th capacitor C16 just-the 2nd triode Q2 emitter-the 2nd triode Q2 base stage-the 28th diode D28-the 73rd electricity
Hinder 6 diode D6 of the 30th diode D30-the of R73-- relay enter line side stationary contact J-A-relay movable contact J-D-the
16 capacitor C16 are negative；Another way are as follows: the 16th capacitor C16 just-the 3rd triode Q3 emitter-the 3rd triode Q3 base stage-the 9th two
The diode of diode D31-the 11st of resistance R74-the 31st of pole pipe D9-the 74th D11-relay outgoing line side stationary contact J-B-after
The electric appliance movable contact capacitor C16 of J-D-the 16th is negative.Wherein relay enter line side stationary contact J-A-relay movable contact J-D electrical characteristics
When circulation, the 2nd triode Q2 forms base current, therefore the 2nd triode Q2 collector is connected.Relay outgoing line side stationary contact J-
When B-relay movable contact J-D electrical characteristics circulation, the 3rd triode Q3 forms base current, therefore the 3rd triode Q3 collector
Conducting.Therefore relay enter line side stationary contact J-A-relay movable contact J-D-relay outgoing line side stationary contact J-B electrical characteristics stream
When logical, the 2nd triode Q2, the 3rd triode Q3 two form base current, the 2nd triode Q2, the 3rd triode Q3 current collection by all means
Pole is all connected, and it is logical that mentioned-above " circuit 1 " forms electric current, and the 8th light emitting diode D8 blue lamp lights, the 20th light-coupled isolation
Infrared light-emitting diode is also lighted inside 1,2 feet of device U20, the resistance value of photosensitive part the 3rd, 4 feet in the 20th optical coupling isolator U20
Less than 50 ohm, definition is i.e. " logical ".Conversely, relay enter line side stationary contact J-A-relay movable contact J-D-relay outlet
When side stationary contact J-B electrical characteristics are obstructed, blue lamp does not work yet, the resistance value of photosensitive part the 3rd, 4 feet in the 20th optical coupling isolator U20
100M can be greater than so that up to infinity, it is skip that " 50 ohm " to " 100M or more " are intermediate here.Due to relay contact two
End is exactly a part of auxiliary contact circuit, and the contact series of relay are that it is switched in person in auxiliary contact detection circuit
Auxiliary contact indicator light and photoelectric coupling input.If the contact of relay electrically can turn on, D8 blue lamp indicator light is bright, optocoupler
Isolator U20 the 3rd, between the 4th pin resistance value (namely auxiliary contact) resistance value less than 50 ohm；If the contact of relay is electrical
Can be obstructed, D8 blue lamp indicator light does not just work, optical coupling isolator U20 the 3rd, resistance value (namely auxiliary contact) between the 4th pin
Resistance value is greater than 100M ohm (infinities).What is re-extended says, if the contact carbonization of relay, aging, although relay
Device has actuation, but the electrical property of contact is not necessarily exactly to be connected." auxiliary contact " of the utility model are true reflection relays
The on-off of " electrical characteristics " of contact.Due to the 8th light emitting diode D8 blue lamp it is bright whether and the 20th optical coupling isolator U20 3,
4 feet (i.e. auxiliary contact) resistance value " less than 50 ohm " and " being greater than 100M " are the through and off of relay contact as a result, therefore
Information feedback is accurate and reliable.
The above content and structure describe the utility model product basic principles and main features and the utility model it is excellent
Point, it should be understood by those skilled in the art that.Only illustrate the principles of the present invention described in examples detailed above and specification,
On the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes and improvements, these variations
It is belonged within the scope of the claimed invention with improvement.The utility model requires protection scope is wanted by appended right
Ask book and its equivalent thereof.
Claims (10)
1. a kind of electron assistant contact circuit for detecting high-voltage relay contact on-off, including high-voltage relay contact, feature
Be: further include input power preprocessing module, isolated power supply module, relay contact detecting module, contacts status information every
From output module and relay Industrial detection indicating circuit, relay Industrial detection indicating circuit includes connecing equipped with relay contact
Indicating circuit module and the relay magnetic survey instruction equipped with relay coil driving indicator light are connected in the contact of logical indicator light
Circuit module；Isolated power supply module rear class exports detection power module, isolated power supply module prime and direct-current input power supplying phase
Electrical connection, auxiliary contact two-terminal are isolated output module output end with contact connection information and are electrically connected.
2. the electron assistant contact circuit of detection high-voltage relay contact on-off described in accordance with the claim 1, it is characterised in that
Input power preprocessing module includes the insurance of F2 self- recoverage, D1 diode, D2 diode, D3 diode, D4 diode, R3 electricity
Resistance, C1 capacitor, VZ7 zener diode, Q1 triode, C14 capacitor, D1 diode, D2 diode, D3 diode and D4 diode
Full-bridge circuit is formed, R3 resistance, C1 capacitor, VZ7 zener diode, Q1 triode, C14 capacitor form simple lowering and stabilizing blood pressure electricity
Road.
3. the electron assistant contact circuit of detection high-voltage relay contact on-off described in accordance with the claim 1, it is characterised in that:
The relay magnetic survey indicating circuit module include the 7th light emitting diode, the 2nd resistance and Hall switch, the 7th shine two
After pole pipe and the series connection of the 2nd resistance, the 7th light-emitting diodes tube cathode is electrically connected with Hall switch output end.
4. the electron assistant contact circuit of detection high-voltage relay contact on-off described in accordance with the claim 1, it is characterised in that:
It includes the 2nd triode, the 3rd triode, the 4th resistance, the 8th light emitting diode, the 20th that indicating circuit module is connected in the contact
Optical coupling isolator and the 1st capacitor, the 2nd transistor collector are connected in series with the 3rd transistor emitter, the 3rd emitter collector according to
It is electrically connected with detection with power module cathode after the 4th resistance of secondary series connection, the 8th light emitting diode, the 2nd transistor emitter and spy
Survey is electrically connected with power module anode 12V power supply, the input terminal anode phase of the 3rd transistor collector and the 20th optical coupling isolator
It is electrically connected, is electrically connected with detection with power module cathode after input terminal cathode the 75th resistance of series connection of the 20th optical coupling isolator；
Two stationary contacts of high-voltage relay are connected on respectively in the base loop of the 2nd triode, the 3rd triode.
5. the electron assistant contact circuit of detection high-voltage relay contact on-off described in accordance with the claim 1, it is characterised in that:
The isolated power supply module includes isolating transformer, the 18th optical coupling isolator, the 17th voltage-stablizer, DC-DC boost chip and complete
Wave rectifier bridge, DC-DC decompression chip input terminal are electrically connected with the 1st transistor emitter, and the 1st transistor collector and all-wave are whole
Stream bridge output end be electrically connected, full-wave rectification bridge input terminal is electrically connected with direct-current input power supplying, isolating transformer input terminal and
The input terminal of DC-DC boost chip is in parallel with output end to be connect, the 18th optical coupling isolator output end emitter pin and DC-DC
The electrical connection of boost chip feedback end pin, after the 69th resistance of DC-DC boost chip feedback end pin serial connection with detection power supply mould
Block power ground is electrically connected, and the 18th optical coupling isolator output end collector pin and the input terminal of DC-DC boost chip are mutually electrically connected
It connects, the 26th diode of connecting again after the 18th optical coupling isolator input terminal anode the 70th resistance of series connection is followed by isolating transformer exporting
End, the 26th diode cathode are electrically connected with the 70th resistance, the isolating transformer output end other end and detection power module electricity
Be electrically connected to source, the series connection node and detection power module power ground that the 26th diode cathode and the 70th resistance are connected in series it
Between be parallel with the 16th capacitor.
6. detecting the electron assistant contact circuit of high-voltage relay contact on-off according to claim 4, it is characterised in that:
The base loop of 2nd triode and the 3rd triode includes enter line side diode, outgoing line side diode, the 73rd resistance,
74 resistance, the 28th diode and the 9th diode, enter line side diode are connected with the 73rd resistance, the 73rd resistance again with the 28th 2 pole
Pipe series connection, the 28th diode anode are electrically connected with the 2nd transistor base, and enter line side diode cathode and relay enter line side are quiet
Contact is electrically connected；Outgoing line side diode is connected with the 74th resistance, the 74th resistance again with the 9th Diode series, the 9th diode sun
Pole is electrically connected with the 3rd transistor base, and outgoing line side diode cathode is electrically connected with relay outgoing line side stationary contact.
7. detecting the electron assistant contact circuit of high-voltage relay contact on-off according to claim 6, it is characterised in that:
The enter line side diode is mutually connected in series using two diode anode and cathodes of the 6th diode and the 30th diode, and the 6th two
Pole pipe cathode is electrically connected with relay enter line side stationary contact；Outgoing line side diode uses the 11st diode and the 31st diode two
A diode anode and cathode is mutually connected in series, and the 11st diode cathode is electrically connected with relay outgoing line side stationary contact.
8. detecting the electron assistant contact circuit of high-voltage relay contact on-off according to claim 6, it is characterised in that:
28th diode cathode is electrically connected with the 29th diode, the 29th diode anode and detection power module power ground phase
Electrical connection；9th diode cathode is electrically connected with the 10th diode, the 10th diode anode and detection power module electricity
Source it is electrically connected.
9. detecting the electron assistant contact circuit of high-voltage relay contact on-off according to claim 5, it is characterised in that:
1st transistor base and detection is with being parallel with voltage-stabiliser tube and the 1st capacitor, the 1st triode between power module power ground
Emitter and detection are with being parallel with the 14th capacitor between power module power ground；18th optical coupling isolator input terminal cathode and detection
With error amplification adjustment chip is parallel between power module power ground, the 18th optical coupling isolator input terminal cathode is sequentially connected in series the
It is electrically connected with detection with power module positive pole after 15 capacitors and the 71st resistance.
10. detecting the electron assistant contact circuit of high-voltage relay contact on-off according to claim 9, feature exists
After the described error amplification adjustment chip, the 72nd resistance of control signal pin serial connection of error amplification adjustment chip with spy
Survey is electrically connected with power module power ground and is connect, error amplification adjustment chip the 71st resistance of control signal pin serial connection after with
Detection is electrically connected with power module positive pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111001.3U CN208636402U (en) | 2018-07-13 | 2018-07-13 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111001.3U CN208636402U (en) | 2018-07-13 | 2018-07-13 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
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| Publication Number | Publication Date |
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| CN208636402U true CN208636402U (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821111001.3U Active CN208636402U (en) | 2018-07-13 | 2018-07-13 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031107A (en) * | 2018-07-13 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
| CN113556112A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Solid relay and application thereof |
-
2018
- 2018-07-13 CN CN201821111001.3U patent/CN208636402U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031107A (en) * | 2018-07-13 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
| CN109031107B (en) * | 2018-07-13 | 2023-10-03 | 浙江英洛华新能源科技有限公司 | Electronic auxiliary contact circuit for detecting on-off of high-voltage relay contact |
| CN113556112A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Solid relay and application thereof |
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