CN205864383U - A kind of high-speed power high-frequency ac solid-state relay - Google Patents
A kind of high-speed power high-frequency ac solid-state relay Download PDFInfo
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- CN205864383U CN205864383U CN201620810664.9U CN201620810664U CN205864383U CN 205864383 U CN205864383 U CN 205864383U CN 201620810664 U CN201620810664 U CN 201620810664U CN 205864383 U CN205864383 U CN 205864383U
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Abstract
A kind of high-speed power high-frequency ac solid-state relay, include an outlet, two input terminals and two lead-out terminals, it is characterized in that: also include multi-resonant oscillating circuit, power amplification circuit, transformator, current rectifying and wave filtering circuit and the optocoupler drive circuit and IGBT pipe composite module being sequentially connected with by wire；Outlet connects multi-resonant oscillating circuit, the periodicity alternation square-wave voltage that multi-resonant oscillating circuit produces is after power amplification and boosting process, galvanic current pressure is provided for optocoupler drive circuit again after over commutation and Filtering Processing, optocoupler drive circuit receives the vulnerabilities scan signal of input terminal side, and by controlling opening and turning off of the IGBT pipe of two mutually opposing parallel connections in IGBT pipe composite module, it is achieved the on-off control to the controlled AC high voltage being in series with lead-out terminal；This utility model switching speed is fast, and controllable voltage x current is big, and power frequency is high, is particularly suited for the on-off control of electric automobile industry.
Description
Technical field
This utility model relates to a kind of relay, especially a kind of high-speed power high-frequency ac solid-state relay, it is adaptable to
Electric automobile industry.
Background technology
Currently, along with the rise of half waveguide technology, solid-state relay arises at the historic moment, and is widely used in power industry, especially
It it is electric automobile industry.
Traditional solid-state relay is generally four-terminal device, includes input circuit, isolation (coupling) circuit and output electricity
Road；Input circuit connects outlet and two inputs, and two the external control signal of inputs (voltage signal source), its
The control circuit of middle input is more than 5mA;The input of solid-state relay uses photoelectric coupling and transformer coupled with coupling of output
Two ways, wherein photoelectric coupling generally uses photodiode photo audion, and photodiode is bidirectional light controlled controlled
Silicon, photovoltaic cell, it is achieved control side and load-side isolation controls, and the transformer coupled control signal generation being to utilize input
Excitation high frequency signal is coupled to secondary, and through detection rectification, logic circuit process is formed and drives signal；Output circuit connects two
Outfan, and with load and controlled high-pressure series, output circuit mainly utilizes low speed controllable silicon to realize switching characteristic.
But, the low speed controllable silicon that existing solid-state relay uses for controlling high pressure complete needed for a break-make time
Between long, generally far larger than 5 μ s, and existing solid-state relay controllable voltage electric current is the highest, control frequency low, generally
50Hz or 60Hz, this can not meet the most far away the demand for control of the high-speed high frequency of motor in electric automobile.
Summary of the invention
The purpose of this utility model seeks to solve traditional solid-state relay make-and-break time length, controllable voltage electric current not
Height, control frequency are low, the problem that thus can not meet the demand for control of electric automobile, solid for this kind of high-speed power high-frequency ac
State relay.
Concrete scheme of the present utility model is: a kind of high-speed power high-frequency ac solid-state relay, includes a power supply
Socket and two input terminals and two lead-out terminals, be is characterized in that: also include the multi-resonant being sequentially connected with by wire
Swing circuit, power amplification circuit, transformator, current rectifying and wave filtering circuit and optocoupler drive circuit and IGBT pipe composite module；Multi resonant
Oscillating circuit connects outlet, for DC voltage is converted to periodically alternation square-wave voltage, and is delivered to power amplification
Circuit；Winding of the outfan connection transformer of power amplification circuit；Current rectifying and wave filtering circuit and optocoupler drive circuit are all provided with
Having two, transformator has two Secondary Winding, is connected respectively the exchange input side of two current rectifying and wave filtering circuits, each whole
The DC output side of stream filter circuit connects each optocoupler drive circuit, and provides galvanic current for optocoupler drive circuit
Pressure, the signal input part correspondence of two optocoupler drive circuits connects two input terminals；IGBT pipe composite module is by two mutually
The IGBT pipe composition of reverse parallel connection, and the collector and emitter of two IGBT pipes reversely correspondence is defeated with two respectively after connecting
Going out terminal correspondence to connect, the outfan correspondence of each optocoupler drive circuit connects grid and the emitter stage of one of them IGBT pipe.
Multi-resonant oscillating circuit described in this utility model uses 555 intervalometers, 555 intervalometers to have eight pins, wherein
Pin 8 and pin 4 are all connected with outlet, and are provided 4.7V DC source by outlet；Pin 7 connects swept resistance R7's
Contact, is in series with diode D1 between pin 7 and pin 6, and pin 6 and pin 2 phase short circuit；Pin 6, pin 5 and pin 1
Between correspondence be in series with electric capacity C1 and electric capacity C2, pin 1 ground connection；One end of swept resistance R7 is in series with resistance between pin 4
R1, is in series with resistance R2 and diode D2 between the other end of swept resistance R7 to pin 6；It is in series with between pin 4 and pin 3
Resistance R3, wherein pin 3 is as the outfan of multi-resonant oscillating circuit.
Power amplification circuit described in this utility model includes PNP type triode Q1 and NPN type triode Q2, Qi Zhongsan
The base stage of pole pipe Q1 is as the input of power amplification circuit, the base stage of the colelctor electrode connecting triode Q2 of audion Q1, three poles
The emitter stage of pipe Q1 connects one end of resistance R4, the other end ground connection of resistance R4；The emitter stage of audion Q2 connects outlet,
And provided 4.7V DC source, one end of a winding of the colelctor electrode connection transformer of audion Q2, transformation by outlet
The other end of winding of device is with resistance R4 altogether.
Optocoupler drive circuit described in this utility model uses TLP250 chip, and TLP250 chip has eight pins,
Pin 1 and the pin 4 of TLP250 chip are vacant, the pin 2 of TLP250 chip and pin 3 two input terminals of corresponding connection,
It is in series with current-limiting resistance between pin 2 and input terminal；Pin 5 connection corresponding with the pin 8 rectifying and wave-filtering electricity of TLP250 chip
The DC output side on road, is wherein parallel with electric capacity between pin 5 and pin 8, pin 5 ground connection, the exchange of current rectifying and wave filtering circuit is defeated
Enter the Secondary Winding of side connection transformer；The pin 6 of TLP250 chip and pin 7 short circuit, and as its of optocoupler drive circuit
In an outfan, this outfan connects the grid of one of them IGBT pipe, the pin 5 of TLP250 chip as optocoupler drive electricity
Another outfan on road, this outfan connects the emitter stage of described IGBT pipe, is parallel with voltage stabilizing between pin 6 and pin 5
Pipe and electric capacity.
Operation principle of the present utility model is as follows: first, and outlet side provides DC source for multi-resonant oscillating circuit, many
Resonance oscillation circuit produces periodically alternation square-wave voltage, and this alternating voltage is through the power amplification of power amplification circuit and transformator
Boosting process, alternating voltage is coupled to the front end of optocoupler drive circuit, and carries out rectification and filter through current rectifying and wave filtering circuit
Ripple provides galvanic current pressure for optocoupler drive circuit, to drive optocoupler after processing；Optocoupler drive circuit passes through two inputs
The vulnerabilities scan signal that terminal provides, the conducting of the IGBT pipe in control IGBT pipe composite module and cut-off, wherein due to IGBT
Pipe composite module is made up of the IGBT pipe of two mutually opposing parallel connections, and each IGBT pipe is driven by an optocoupler drive circuit
Dynamic, when IGBT pipe composite module constitutes series loop with load, controlled AC high voltage, then two in IGBT pipe composite module
Individual IGBT pipe will be in the positive half period of controlled AC high voltage and negative half-cycle alternate conduction, it is achieved thereby that solid-state relay
Switch control functions.
This utility model, compared with existing solid-state relay, has the advantage that
(1) at a high speed: this utility model completes the shortest 5us that needs of break-make, and present most of relay completes once
Break-make is to be far longer than 5us；
(2) voltage x current can be controlled bigger: this utility model is owing to using high-power IGBT pipe (insulated gate bipolar crystal
Pipe), at normal temperatures, its highest pressure voltage that can pass through is 600-1200V, and the highest transient current is 45-200A；
(3) power high-frequency: this utility model employs when design by two mutually opposing structures in parallel of high-power IGBT pipe
Becoming IGBT pipe composite module, when controlled alternating current is by IGBT pipe composite module, the IGBT pipe of two reverse parallel connections is alternately
Conducting or by, and the speed of two IGBT pipe mutually switching are quickly, and its frequency exceeds well over the frequency of industrial electrical 50Hz, full
The demand for control of motor in foot electric automobile；
(4) electric isolution property is good: use transformator and optocoupler drive circuit to play control side and load-side in this utility model
Control the effect of isolation, and multi-resonant oscillating circuit, power amplification circuit be respectively adopted with optocoupler drive circuit three different
Earth point, thus more preferable ensure that the isolation controlled between device.
Accompanying drawing explanation
Fig. 1 is control structure block diagram of the present utility model；
Fig. 2 is electrical schematic diagram of the present utility model.
In figure: 1 outlet, 2 input terminals, 3 lead-out terminals, 4 multi-resonant oscillating circuits, 5 power amplifications
Circuit, 6 transformators, 7 current rectifying and wave filtering circuits, 8 optocoupler drive circuits, 9 IGBT pipe composite modules, 10 loads,
11 vulnerabilities scan signals, 12 controlled AC high voltage.
Detailed description of the invention
Seeing Fig. 1-2, this utility model includes an outlet 1 and two input terminals 2 and two outfans
Son 3, particularly: also include be sequentially connected with by wire multi-resonant oscillating circuit 4, power amplification circuit 5, transformator 6, rectification
Filter circuit 7 and optocoupler drive circuit 8 and IGBT pipe composite module 9；Multi-resonant oscillating circuit 4 connects outlet 1, and being used for will
DC voltage is converted to periodically alternation square-wave voltage, and is delivered to power amplification circuit 5；The outfan of power amplification circuit 5
Winding of connection transformer 6；Current rectifying and wave filtering circuit 7 and optocoupler drive circuit 8 are equipped with two, and transformator 6 has two
Secondary Winding, is connected respectively the exchange input side of two current rectifying and wave filtering circuits 7, and the direct current of each current rectifying and wave filtering circuit 7 is defeated
Go out side and connect each optocoupler drive circuit 8, and provide galvanic current pressure, two optocouplers to drive electricity for optocoupler drive circuit 8
The signal input part correspondence on road 8 connects two input terminals 2；IGBT pipe composite module 9 is by the IGBT of two mutually opposing parallel connections
Pipe Q3, Q4 form, and wherein IGBT pipe Q3, Q4 are respectively two N-channel IGBT, and the collector and emitter of two IGBT pipes
Reversely corresponding connect after respectively with two corresponding connections of lead-out terminal 3, the outfan correspondence of each optocoupler drive circuit 8 connects it
In the grid of an IGBT pipe and emitter stage.
Multi-resonant oscillating circuit 4 described in the present embodiment uses 555 intervalometers, 555 intervalometers to have eight pins, Qi Zhongyin
Foot 8 and pin 4 are all connected with outlet, and are provided 4.7V DC source by outlet；Pin 7 connects touching of swept resistance R7
Head, is in series with diode D1 between pin 7 and pin 6, and pin 6 and pin 2 phase short circuit；Pin 6, pin 5 and pin 1 it
Between correspondence be in series with electric capacity C1 and electric capacity C2, pin 1 ground connection；One end of swept resistance R7 is in series with resistance R1 between pin 4,
The other end of swept resistance R7 is in series with resistance R2 and diode D2 between pin 6；It is in series with electricity between pin 4 and pin 3
Resistance R3, wherein pin 3 is as the outfan of multi-resonant oscillating circuit.Multi-resonant oscillating circuit 4 operationally, due to diode D1, D2
There is the unidirectional general character so that the charging and discharging of electric capacity C1 is separately carried out, then by regulation swept resistance R7, it is possible to change
The output duty cycle of circuit, thus realize the regulation to output.
Power amplification circuit 5 described in the present embodiment includes PNP type triode Q1 and NPN type triode Q2, Qi Zhongsan
The base stage of pole pipe Q1 is as the input of power amplification circuit, the base stage of the colelctor electrode connecting triode Q2 of audion Q1, three poles
The emitter stage of pipe Q1 connects one end of resistance R4, the other end ground connection of resistance R4；The emitter stage of audion Q2 connects outlet,
And provided 4.7V DC source, one end of a winding of the colelctor electrode connection transformer of audion Q2, transformation by outlet
The other end of winding of device is with resistance R4 altogether.Power amplification circuit 5 operationally, when the output of multi-resonant oscillating circuit 4
End turns on for (pin 3 of multi-resonant oscillating circuit 4 is connected with the base stage of audion Q1) during high level, audion Q1, then three pole
The voltage of the colelctor electrode of pipe Q1 reduces, so that audion Q2 conducting, owing to the resistance of transformer coil is less, then transformator
Primary side just can obtain bigger output.
Optocoupler drive circuit described in the present embodiment 8 uses TLP250 chip, TLP250 chip to have eight pins,
Pin 1 and the pin 4 of TLP250 chip are vacant, the pin 2 of TLP250 chip and pin 3 two input terminals of corresponding connection,
It is in series with current-limiting resistance between pin 2 and input terminal；Pin 5 connection corresponding with the pin 8 rectifying and wave-filtering electricity of TLP250 chip
The DC output side on road, is wherein parallel with electric capacity between pin 5 and pin 8, pin 5 ground connection, the exchange of current rectifying and wave filtering circuit is defeated
Entering the Secondary Winding of side connection transformer, wherein the primary side of transformator is 1:3 with the ratio of the number of turn of secondary side winding；TLP250
The pin 6 of chip and pin 7 short circuit, and as one of them outfan of optocoupler drive circuit, this outfan connects wherein one
The grid of individual IGBT pipe, the pin 5 of TLP250 chip connects institute as another outfan of optocoupler drive circuit, this outfan
State the emitter stage of IGBT pipe, between pin 6 and pin 5, be parallel with stabilivolt and electric capacity.
Operationally, 4.7V DC voltage is become periodically alternation square-wave voltage to this utility model by multi-resonant oscillating circuit 4,
This voltage power amplifies and after boosting process, then obtains the stable DC voltage of a 15V-18V through rectifying and wave-filtering, as light
The supply voltage of coupling drive circuit 8.
By controlling the vulnerabilities scan signal 11 from two input terminal 2 inputs, it is possible to obtain at integrated optocoupler outfan
To high level or low level.When the potential difference of the vulnerabilities scan signal 11 from two input terminal 2 inputs is more than 4V, optocoupler is defeated
When going out high level, IGBT pipe will turn on, and will form path between its colelctor electrode and emitter stage, when from two input terminals 2
When the potential difference of the vulnerabilities scan signal 11 of input is 0V, integrated optocoupler output low level, IGBT pipe will end, so passing through
Control just can control conducting and the cut-off of IGBT pipe from the vulnerabilities scan signal 11 of two input terminal 2 inputs, it is achieved solid-state
The switching function of relay.
When the vulnerabilities scan signal 11 inputted from two input terminals 2 is alternation control signal, integrated optocoupler outfan
Square wave will be exported, if the frequency of input signal strengthens, then the frequency of output square wave also can increase, due to integrated optocoupler
The highest frequency of TLP250 chip input signal is 25kHz, is i.e. equivalent in the ideal situation by described in the utility model solid
State relay the highest can operating frequency up to 25kHz, it is achieved purpose at a high speed；Meanwhile, due to final output circuit it is
It is made up of two IGBT pipe reverse parallel connections in IGBT pipe composite module 9, and each IGBT pipe is by an optocoupler drive circuit 8
Drive, when IGBT pipe composite module 9 constitutes series loop with load 10, controlled AC high voltage 12, then IGBT pipe combination die
Two IGBT pipes in block 9 in the positive half period of controlled AC high voltage 12 and negative half-cycle alternate conduction, thus will realize
Solid-state relay carries out altofrequency ground on-off control.
Claims (4)
1. a high-speed power high-frequency ac solid-state relay, includes an outlet and two input terminals and two
Lead-out terminal, is characterized in that: also include be sequentially connected with by wire multi-resonant oscillating circuit, power amplification circuit, transformator,
Current rectifying and wave filtering circuit and optocoupler drive circuit and IGBT pipe composite module；Multi-resonant oscillating circuit connects outlet, and being used for will
DC voltage is converted to periodically alternation square-wave voltage, and is delivered to power amplification circuit；The outfan of power amplification circuit is even
Connect a winding of transformator；Current rectifying and wave filtering circuit and optocoupler drive circuit are equipped with two, transformator have two secondaries around
Group, is connected respectively the exchange input side of two current rectifying and wave filtering circuits, and the DC output side of each current rectifying and wave filtering circuit connects
Each optocoupler drive circuit, and provide galvanic current pressure for optocoupler drive circuit, the signal of two optocoupler drive circuits is defeated
Enter end correspondence and connect two input terminals；IGBT pipe composite module is made up of the IGBT pipe of two mutually opposing parallel connections, and two
The collector and emitter of individual IGBT pipe reversely corresponding connect after corresponding with two lead-out terminals respectively connect, each optocoupler drives
The outfan correspondence of circuit connects grid and the emitter stage of one of them IGBT pipe.
A kind of high-speed power high-frequency ac solid-state relay the most according to claim 1, is characterized in that: described multi-harmonic-oscillations
Circuit uses 555 intervalometers, 555 intervalometers to have eight pins, and wherein pin 8 and pin 4 are all connected with outlet, and by electricity
Source socket provides 4.7V DC source；Pin 7 connects the contact of swept resistance R7, is in series with diode between pin 7 and pin 6
D1, and pin 6 and pin 2 phase short circuit；Corresponding between pin 6, pin 5 and pin 1 it is in series with electric capacity C1 and electric capacity C2, pin
1 ground connection；One end of swept resistance R7 is in series with resistance R1 between pin 4, goes here and there between the other end of swept resistance R7 to pin 6
It is associated with resistance R2 and diode D2；Being in series with resistance R3 between pin 4 and pin 3, wherein pin 3 is as multi-resonant oscillating circuit
Outfan.
A kind of high-speed power high-frequency ac solid-state relay the most according to claim 1, is characterized in that: described power amplification
Circuit includes PNP type triode Q1 and NPN type triode Q2, wherein defeated as power amplification circuit of the base stage of audion Q1
Entering end, the base stage of the colelctor electrode connecting triode Q2 of audion Q1, the emitter stage of audion Q1 connects one end of resistance R4, resistance
The other end ground connection of R4；The emitter stage of audion Q2 connects outlet, and is provided 4.7V DC source, three poles by outlet
One end of winding of the colelctor electrode connection transformer of pipe Q2, the other end of a winding of transformator is with resistance R4 altogether.
A kind of high-speed power high-frequency ac solid-state relay the most according to claim 1, is characterized in that: described optocoupler drives
Circuit uses TLP250 chip, and TLP250 chip has eight pins, and pin 1 and the pin 4 of TLP250 chip are vacant, TLP250
The pin 2 of chip and pin 3 two input terminals of corresponding connection, be in series with current-limiting resistance between pin 2 and input terminal；
Pin 5 DC output side that connect current rectifying and wave filtering circuit corresponding with pin 8 of TLP250 chip, wherein between pin 5 and pin 8
It is parallel with electric capacity, pin 5 ground connection, the Secondary Winding of the exchange input side connection transformer of current rectifying and wave filtering circuit；TLP250 chip
Pin 6 and pin 7 short circuit, and as one of them outfan of optocoupler drive circuit, this outfan connects one of them
The grid of IGBT pipe, the pin 5 of TLP250 chip connects described as another outfan of optocoupler drive circuit, this outfan
The emitter stage of IGBT pipe, is parallel with stabilivolt and electric capacity between pin 6 and pin 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620810664.9U CN205864383U (en) | 2016-07-29 | 2016-07-29 | A kind of high-speed power high-frequency ac solid-state relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620810664.9U CN205864383U (en) | 2016-07-29 | 2016-07-29 | A kind of high-speed power high-frequency ac solid-state relay |
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| Publication Number | Publication Date |
|---|---|
| CN205864383U true CN205864383U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620810664.9U Expired - Fee Related CN205864383U (en) | 2016-07-29 | 2016-07-29 | A kind of high-speed power high-frequency ac solid-state relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371444A (en) * | 2020-03-18 | 2020-07-03 | 江苏固特电气控制技术有限公司 | High-voltage direct-current solid-state relay circuit |
-
2016
- 2016-07-29 CN CN201620810664.9U patent/CN205864383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371444A (en) * | 2020-03-18 | 2020-07-03 | 江苏固特电气控制技术有限公司 | High-voltage direct-current solid-state relay circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20210729 |