CN207442809U - A kind of solid-state relay - Google Patents
A kind of solid-state relay Download PDFInfo
- Publication number
- CN207442809U CN207442809U CN201721399517.8U CN201721399517U CN207442809U CN 207442809 U CN207442809 U CN 207442809U CN 201721399517 U CN201721399517 U CN 201721399517U CN 207442809 U CN207442809 U CN 207442809U
- Authority
- CN
- China
- Prior art keywords
- circuit
- state
- solid
- field
- effect tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000004224 protection Effects 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 33
- 230000005669 field effect Effects 0.000 claims description 46
- 230000005611 electricity Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 16
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model is related to a kind of solid-state relay, including：Control signal process circuit, state latching circuit, protection circuit, logical operation circuit, driving circuit and control switch; wherein; state latching circuit is connected respectively with control signal process circuit, protection circuit, logical operation circuit and driving circuit; control signal process circuit is also connected with logical operation circuit; logical operation circuit is also connected with driving circuit, and driving circuit is also connected with control switch.A kind of solid-state relay provided by the utility model, even if it realizes external control power input to break, it can also make the state of the on or off before control switch holding, solid-state relay has the function of state holding, and when state is kept, required energy is extremely low, is conducive to extend the service life with the solid-state relay that state is kept.
Description
Technical field
The utility model is related to relay field more particularly to a kind of solid-state relays for possessing state and keeping function.
Background technology
At present, solid-state relay can be divided into half control type solid-state relay and full-control type by the controllability of composition semiconductor devices
Solid-state relay.By taking full-control type solid-state relay as an example, as shown in figure 3, its switching device is mainly MOSFET (Metal-
Oxide-Semiconductor Field-Effect Transistor, metal-oxide semiconductor field effect transistor) and
IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), by two common sources
MOSFET and IGBT forms two-way controllable switch 37.During normal work, control power supply, interface circuit are provided to interface circuit 31
Controller 32 and other internal detection circuitries are given after 31 isolated from power, including temperature sensing circuit 33, voltage detecting circuit
34th, the preparation for receiving order is carried out in current detection circuit 35 etc., 32 electrification reset of controller, program operation.External control unit outside
It is sent and ordered to interface circuit 31 by data/address bus, which gives controller 32, controller after being isolated by interface circuit 31
32 data gathered according to command context and detection circuit are determined to the signal form of gate driving circuit 36, gate driving circuit
The signal that 36 controllers 32 provide amplifies the after-applied grid to two-way controllable switch 37, controls the logical of two-way controllable switch 37
It is disconnected.
As it can be seen that existing solid-state relay can only rely on the control power supply of external offer and maintain on off operating mode, control electricity
Source must exist always, reduce the reliability of system, and voltage detecting circuit and fly-wheel diode are required to power ground, increase
Add the complexity of system, and power end and load end cannot exchange, there are potential application risks.
Utility model content
Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide one kind and possess state holding
The solid-state relay of function.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
A kind of solid-state relay, including：Control signal process circuit, state latching circuit, protection circuit, logical operation electricity
Road, driving circuit and control switch, wherein, the state latching circuit respectively with the control signal process circuit, the guarantor
Protection circuit, the logical operation circuit are connected with the driving circuit, and the control signal process circuit is also transported with the logic
Circuit connection is calculated, the logical operation circuit is also connected with the driving circuit, and the driving circuit is also switched with the control
Connection.
The beneficial effects of the utility model are：A kind of solid-state relay provided by the utility model, at control signal
Reason circuit controls other circuit structures, and passes through logical operation circuit and carry out computing to the set signal of input and reset signal etc.
After control driving circuit, drive control switch, and state latch is carried out by state latching circuit, even if realizing external control
Power input is broken, and can also make the state of the on or off before control switch holding, and solid-state relay is protected with state
Function is held, and required energy is extremely low when state is kept, being conducive to extend has the function of making for the solid-state relay that state is kept
Use the service life.
Based on the above technical solutions, the utility model can also do following improvement.
Further, the control switch includes：First field-effect tube and the second field-effect tube, wherein：
The drain electrode access external circuits of first field-effect tube, the grid of first field-effect tube and the driving electricity
Road connects；
The drain electrode of second field-effect tube accesses the external circuits, grid and the drive of second field-effect tube
Dynamic circuit connection；
The source electrode of first field-effect tube is connected with the source electrode of second field-effect tube.
Advantageous effect using above-mentioned further scheme is：It is made of the field-effect tube and two diodes of two common sources
Two-way controllable switch can prevent electric current from being flowed from load to reversal of power, can ensure that system safely may be used in application scenes
Control.
Further, the control switch further includes：First resistor and second resistance, the first resistor and described second
Resistance series connection enters between the source electrode of first field-effect tube and the source electrode of second field-effect tube.
Further, the source electrode of first field-effect tube and second field-effect tube also respectively with the protection circuit
Connection.
Further, the control signal process circuit includes：Isolating chip, the isolating chip respectively with the state
Latch cicuit is connected with the logical operation circuit, and the isolating chip is also connected with external signal input circuit.
Further, the control signal process circuit further includes：Power regulator, the power regulator with it is described every
Off-chip piece connects, and the power regulator also be connected with external power supply input circuit, the power regulator for
The isolating chip provides regulated power supply.
Further, the isolating chip is also connected with the protection circuit, for provide the power regulator
Regulated power supply is sent to the protection circuit.
Further, the state latching circuit includes：Microcontroller, electric source monitoring circuit, the first battery and the second battery,
Anode of the microcontroller respectively with first battery and second battery is connected, the microcontroller also respectively with the electricity
Source observation circuit, the control signal process circuit, the protection circuit, the logical operation circuit and the driving circuit connect
It connects.
Further, further include：First clamp circuit, first clamp circuit respectively with first field-effect tube
Drain electrode is connected with the driving circuit.
Further, further include：Second clamp circuit, second clamp circuit respectively with second field-effect tube
Drain electrode is connected with the driving circuit.
Advantageous effect using above-mentioned further scheme is：Entire circuit using symmetrical design, realize power end and
The exchange of load end avoids security risk existing for reversed power end and load end during use, improves and use just
Profit, meanwhile, system is not required, which to provide ground wire, has various defencive functions, can be suitable for resistive, capacitive and inductive load,
The complexity of system is reduced, improves the practicability of system.
The advantages of the utility model additional aspect, will be set forth in part in the description, partly will be from following description
In become it is apparent or by the utility model practice recognize.
Description of the drawings
Fig. 1 is a kind of structure diagram for solid-state relay that the utility model embodiment one provides；
Fig. 2 is a kind of structure diagram for solid-state relay that the utility model embodiment two provides；
Fig. 3 is a kind of structure diagram for solid-state relay that the utility model background technology provides.
Specific embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of structure diagram of the solid-state relay provided for the utility model embodiment one, the solid-state
Relay includes：Control signal process circuit 1, state latching circuit 2, protection circuit 3, logical operation circuit 4, driving circuit 5
With control switch 6, wherein, state latching circuit 2 respectively with control signal process circuit 1, protection circuit 3, logical operation circuit 4
Connected with driving circuit 5, control signal process circuit 1 is also connected with logical operation circuit 4, logical operation circuit 4 also with driving
Circuit 5 connects, and driving circuit 5 is also connected with control switch 6.
Each circuit is further detailed below.
The input signal of control signal process circuit 1 shares 3, refers respectively to make power supply signal, set signal and reset
Signal, wherein, instruction power signal can input range be 6~12V, set signal and reset signal level scope for 3V~
10V。
Preferably, control signal process circuit 1 can include counnter attack module, Voltage stabilizing module and isolation module, control signal
Process circuit 1 is respectively carried out at counnter attack this 3 signals after instruction power signal, set signal and reset signal is received
Reason, voltage stabilizing processing and isolation processing, and signal is sent to state latching circuit 2 and logical operation circuit 4 by treated.
Set signal, reset signal and the protection circuit 3 that state latching circuit 2 provides control signal process circuit 1
The protection signal of offer is calculated, and obtains latch signal, and latch signal is sent to logical operation circuit 4.
Preferably, when set signal and reset signal are 0, protection signal is also 0, then state latching circuit 2
The state that output remains original is constant；When set signal be 1, reset signal 0, protection signal be 0 when, then state latch electricity
The latch signal that road 2 exports is 1 (set state)；When any one in reset signal and protection signal is 1, then state latch
The latch signal that circuit 2 exports is 0 (reset state).
Preferably, state latching circuit 2 switchs to set state equipped with certain time delay by reset state, so can be preferably
Protect circuit 3.
Logical operation circuit 4 performs the computing of logical "and", is receiving the latch signal of the transmission of state latching circuit 2,
And after the set signal and reset signal of the transmission of control signal process circuit 1, reset signal is negated first, then it will latch
After the computing of signal, set signal and the reset signal progress logical "and" negated, the first drive signal is exported to driving circuit
5。
Preferably, the supply voltage that logical operation circuit 4 can also be exported according to state latching circuit 2 detects signal, right
After latch signal, set signal, supply voltage detection signal and the reset signal that negates carry out the computing of logical "and", output the
One drive signal is to driving circuit 5.
It should be noted that logical operation circuit 4 only performs the function of itself, there is no changing on logical algorithm
Into can be that can realize the device, chip or circuit of logic "and" operation.
After driving circuit 5 is amplified processing to the first drive signal, according to amplified first drive signal to control
The on or off of switch 6 is controlled, meanwhile, state latching circuit 2 exports identical the second drive signal hair of a property
Driving circuit 5 is given, driving circuit 5 is not amplified processing to the second drive signal, when control signal process circuit 1 stops work
When making, the on or off of control switch 6 is maintained by the second drive signal.
A kind of solid-state relay provided in this embodiment controls other circuit structures by control signal process circuit 1, and
Driving circuit 5, drive control are controlled after carrying out computing to set signal of input and reset signal etc. by logical operation circuit 4
Switch 6, and pass through state latching circuit 2 and carry out state latch, it breaks, can also make even if realizing external control power input
The state of on or off before 6 holding of control switch, solid-state relay have the function of state holding, and when state is kept
Required energy is extremely low, is conducive to extend the service life with the solid-state relay that state is kept.
As shown in Fig. 2, a kind of structure diagram of the solid-state relay provided for the utility model embodiment two, the solid-state
Relay includes：Control signal process circuit 1, state latching circuit 2, protection circuit 3, logical operation circuit 4, driving circuit 5
With control switch 6, wherein, state latching circuit 2 respectively with control signal process circuit 1, protection circuit 3, logical operation circuit 4
Connected with driving circuit 5, control signal process circuit 1 is also connected with logical operation circuit 4, logical operation circuit 4 also with driving
Circuit 5 connects, and driving circuit 5 is also connected with control switch 6.
Preferably, control switch 6 can be to form two-way controllable switch by the MOSFET and IGBT of two common sources, below
The structure of control switch 6 is illustrated.
Control switch 6 includes：First field-effect tube 61 and the second field-effect tube 62, wherein：
The drain electrode access external circuits of first field-effect tube 61, the grid of the first field-effect tube 61 are connected with driving circuit 5.
The drain electrode access external circuits of second field-effect tube 62, the grid of the second field-effect tube 62 are connected with driving circuit 5.
The source electrode of first field-effect tube 61 and the second field-effect tube 62 is also connected with protection circuit 3 respectively.
It should be noted that external circuits can be power supply or load etc..
It is appreciated that field-effect tube is made of devices such as the diodes that is marked in figure.
The source electrode of first field-effect tube 61 is connected with the source electrode of the second field-effect tube 62.
Two-way controllable switch is formed by the field-effect tube and two diodes of two common sources, electric current can be prevented from load
It is flowed to reversal of power, can ensure that system is safely controllable in application scenes.
Preferably, control switch 6 can also include：First resistor 63 and second resistance 64,63 and second electricity of first resistor
64 series connection access of resistance can be played between the source electrode of the first field-effect tube 61 and the source electrode of the second field-effect tube 62 to control
The protective effect of switch 6.
The both ends of control switch 6 can be respectively connected to power supply or load.
Preferably, control signal process circuit 1 includes：Counnter attack diode, isolating chip 11 and power regulator 12, isolation
Chip 11 is connected respectively with state latching circuit 2 and logical operation circuit 4, isolating chip 11 also with external signal input circuit
Connection, isolating chip 11 are also connected with protection circuit 3, and the regulated power supply that power regulator 12 provides is sent to protection circuit 3.
Power regulator 12 is connected with isolating chip 11, and power regulator 12 is also connected with external power supply input circuit, power supply voltage stabilizing
Device 12 is used to provide regulated power supply to isolating chip 11.
Counnter attack diode is for instruction power signal, set signal and the reset signal counnter attack of input, power regulator 12
For carrying out voltage stabilizing processing to the instruction power signal of input, obtain regulated power supply and be supplied to isolating chip 11, isolating chip
11 are used to isolate the instruction power signal after reset signal, set signal and voltage stabilizing.
It should be noted that counnter attack diode can be arranged on isolating chip 11 and power regulator 12 according to actual demand
Signal input line on, no longer embodied in figure.
Preferably, when the scope of externally input instruction power signal is relatively narrow, the width in control signal process circuit 1
Scope input power voltage-stablizer 12 can be cancelled.
Preferably, state latching circuit 2 includes：Microcontroller 21, electric source monitoring circuit 22, the first battery 23 and the second battery
24, anode of the microcontroller 21 respectively with the first battery 23 and the second battery 24 is connected, and microcontroller 21 is also electric with power supply monitoring respectively
Road 22, control signal process circuit 1, protection circuit 3, logical operation circuit 4 and driving circuit 5 connect.
Electric source monitoring circuit 22 sends out detection signal for detecting the service condition of the first battery 23 and the second battery 24
Give microcontroller 21.
Microcontroller 21 can receive from external set signal, reset signal and the excess temperature of inside signal and cross information carrying
Number, and the second drive signal for exporting maintenance state is supplied to driving circuit 5.
Preferably, microcontroller 21 works in SLEEP patterns in not external control command, and current drain is nA ranks,
Be conducive to extend the service life of battery.
Preferably, the first battery 23 and the second battery 24 can be primary battery or rechargeable battery and super electricity
The energy storage devices such as appearance, since the self-discharge current of current rechargeable battery and super capacitor is larger, they are for state latch electricity
It needs periodically to charge to it during road 2.
Preferably, if system is capable of providing ground wire, the first battery 23, the second battery 24 in state latching circuit 2
It can cancel with electric source monitoring circuit 22, solid-state relay still possesses state and keeps function.
Preferably, state latching circuit 2 can be made of microcontroller 21 and peripheral circuit, can also be by gate circuit, triggering
The discrete devices such as device form, and can also be made of devices such as DSP, FPGA, these devices can realize state latching circuit 2
State latch function.
It should be noted that state latching circuit 2 only performs the function of itself, there is no the improvement on algorithm, can
Think device, chip or the circuit that can be realized and be judged signal " 0 " " 1 ".
Preferably, further include：First clamp circuit 7, the first clamp circuit 7 respectively with the drain electrode of the first field-effect tube 61 and
Driving circuit 5 connects.
Preferably, further include：Second clamp circuit 8, the second clamp circuit 8 respectively with the drain electrode of the second field-effect tube 62 and
Driving circuit 5 connects.
Preferably, the first clamp circuit 7 and the second clamp circuit 8 can also be included simultaneously, entire circuit is used and symmetrically set
Meter, exchanges power end and load end, avoids security risk existing for reversed power end and load end during use,
Improve the convenience used, meanwhile, be not required system provide ground wire i.e. have various defencive functions, can be suitable for it is resistive,
Capacitive and inductive load reduce the complexity of system, improve the practicability of system.
It should be noted that the first clamp circuit 7 and the second clamp circuit 8 can be：Can arbitrarily realize electric current and/or
The circuit of voltage limitation, for example, can be circuit being made of diode, resistance and metal-oxide-semiconductor etc., due to the species of clamp circuit
Have very much, details are not described herein.
A kind of application example of solid-state relay provided in this embodiment is given below.
When the band inductive load shut-off of solid-state relay access, the voltage born on control switch 6 has been more than specified electricity
Source voltage 28V, when the voltage rises to 35V, the first clamp circuit 7 and the second clamp circuit 8 act, will be on control switch 6
The voltage clamping born is in 35V.
When the band capacitive load of solid-state relay access is opened, the electric current born on control switch 6 has been more than specified negative
Electric current 10A is carried, when the electric current rises to certain value, the first clamp circuit 7 and the second clamp circuit 8 act, by control switch 6
On the current-clamp born in 40A.
When solid-state relay overloads, the electric current born on control switch 6 has been more than nominal load current 10A, when the electricity
When stream rises to 20A, protection circuit 3 exports a current protection signal to state latching circuit 2, while to driving circuit 5 one
A cut-off signals, after overloading phenomenon elimination, state latching circuit 2 is able to maintain that the off state of solid-state relay.
When solid-state relay excess temperature, the temperature born on control switch 6 has been more than preset temperature threshold value, when temperature rises
During to 120 DEG C, protection circuit 3 exports a temperature protection signal to state latching circuit 2, while gives driving circuit 5 one passes
Break signal, after being eliminated so as to excess temperature phenomenon, state latching circuit 2 is able to maintain that the off state of solid-state relay.
When solid-state relay is operated in state switching, i.e. the energy of the switching of solid-state relay state or maintenance is all by controlling
When signal processing circuit 1 provides, in the event of phenomenon, excess temperature phenomenon is overloaded, state latching circuit 2 is in overload phenomenon, excess temperature
Phenomenon is delayed 20ms again to switch 6 is controlled to switch over after eliminating.
When solid-state relay, which is operated in, keeps opening state, state latching circuit 2 is merely responsible for protection circuit 3 and control
Switch 6 maintains to open required energy, 10 μ A of electric current ＜.
When solid-state relay, which is operated in, to be held off, state latching circuit 2 is merely responsible for control switch 6 and maintains to close
Disconnected required energy, 3 μ A of electric current ＜, meanwhile, protection circuit 3 is stopped.
When the depleted of energy of 2000mAH the first batteries 23 and the second battery 24 that maintain the work of state latching circuit 2, Gu
State relay loses state and keeps function, and in this state, driving circuit 5 can ensure solid-state relay in the reset state
Reliable turn-off.
Preferably, when the energy density of energy storage device further improves, and the energy consumption of state latching circuit 2 further reduces
When, can possess the utility model more multi-functional, for example, I2T inverse-time overcurrent protections, soft start, bus communication, protection door
The functions such as limit can be set, electric current and voltage change ratio are controllable.
Preferably, which can also be by changing the parameter of each device, applied to alternating current circuit.
Preferably, which can also be by changing the parameter of each device, the electricity applied to other voltage specifications
Road.
A kind of solid-state relay provided in this embodiment controls other circuits, status lock by control signal process circuit 1
It deposits circuit 2 and carries out state latch, driving circuit 5 is controlled after 4 computing of logical operation circuit, drive control switch 6 is realized and disobeyed
The external control power supply provided is provided and maintains on off operating mode, and solid-state relay required energy when state is kept is extremely low, favorably
In extend have the function of state keep solid-state relay service life, and solid-state relay be not required system offer ground wire be
With various defencive functions, resistive, capacitive and inductive load can be suitable for, and power end and load end can exchange, and reduce
Requirement, and switching device used is wholly-controled device, driving circuit 5 can be such that it quickly turns on and off.
Reader should be understood that in the description of this specification, reference term " one embodiment ", " some embodiments ", " show
The description of example ", " specific example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure,
Material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned term
Schematic representation need not be directed to identical embodiment or example.Moreover, description specific features, structure, material or
Feature may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, in not conflicting situation
Under, those skilled in the art can be by the different embodiments described in this specification or example and different embodiments or example
Feature be combined and combine.
It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description
The specific work process with unit is put, may be referred to the corresponding process in preceding method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed apparatus and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, is only
A kind of division of logic function, can there is an other dividing mode in actual implementation, for example, multiple units or component can combine or
Person is desirably integrated into another system or some features can be ignored or does not perform.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
Component may or may not be physical location, you can be located at a place or can also be distributed to multiple networks
On unit.Some or all of unit therein can be selected to realize the utility model embodiment scheme according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit,
Can be that unit is individually physically present or two or more units integrate in a unit.Above-mentioned collection
Into unit both may be employed hardware form realize, can also be realized in the form of SFU software functional unit.
If integrated unit is realized in the form of SFU software functional unit and is independent production marketing or in use, can
To be stored in a computer read/write memory medium.Based on such understanding, the technical solution of the utility model is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or the network equipment etc.) performs the complete of each embodiment method of the utility model
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-
OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. are various to store
The medium of program code.
More than, it is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited thereto,
In the technical scope that any one skilled in the art discloses in the utility model, it can readily occur in various equivalent
Modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, the utility model
Protection domain should be subject to the protection scope in claims.
Claims (10)
1. a kind of solid-state relay, which is characterized in that including：Control signal process circuit, state latching circuit, protection circuit,
Logical operation circuit, driving circuit and control switch, wherein, the state latching circuit is electric with control signal processing respectively
Road, protection circuit, the logical operation circuit are connected with the driving circuit, the control signal process circuit also with institute
State logical operation circuit connection, the logical operation circuit is also connected with the driving circuit, the driving circuit also with it is described
Control switch connection.
2. solid-state relay according to claim 1, which is characterized in that the control switch includes：First field-effect tube
With the second field-effect tube, wherein：
The drain electrode access external circuits of first field-effect tube, grid and the driving circuit of first field-effect tube connect
It connects；
The drain electrode of second field-effect tube accesses the external circuits, the grid of second field-effect tube and the driving electricity
Road connects；
The source electrode of first field-effect tube is connected with the source electrode of second field-effect tube.
3. solid-state relay according to claim 2, which is characterized in that the control switch further includes：First resistor and
Second resistance, the first resistor and second resistance series connection access are in the source electrode and described second of first field-effect tube
Between the source electrode of field-effect tube.
4. solid-state relay according to claim 2, which is characterized in that first field-effect tube and second effect
Should pipe source electrode also respectively with it is described protection circuit be connected.
5. solid-state relay according to claim 1, which is characterized in that the control signal process circuit includes：Isolation
Chip, the isolating chip are connected respectively with the state latching circuit and the logical operation circuit, and the isolating chip is also
It is connected with external signal input circuit.
6. solid-state relay according to claim 5, which is characterized in that the control signal process circuit further includes：Electricity
Source voltage-stablizer, the power regulator are connected with the isolating chip, and the power regulator is also electric with external power input
Road connects, and the power regulator is used to provide regulated power supply to the isolating chip.
7. solid-state relay according to claim 6, which is characterized in that the isolating chip also connects with the protection circuit
It connects, the regulated power supply for the power regulator to be provided is sent to the protection circuit.
8. solid-state relay according to claim 1, which is characterized in that the state latching circuit includes：Monolithic is mechanical, electrical
Source observation circuit, the first battery and the second battery, the microcontroller respectively with first battery and second battery just
Pole connect, the microcontroller also respectively with the electric source monitoring circuit, the control signal process circuit, it is described protection circuit,
The logical operation circuit is connected with the driving circuit.
9. solid-state relay according to any one of claim 2 to 4, which is characterized in that further include：First clamper electricity
Road, first clamp circuit are connected respectively with the drain electrode of first field-effect tube and the driving circuit.
10. solid-state relay according to any one of claim 2 to 4, which is characterized in that further include：Second clamper electricity
Road, second clamp circuit are connected respectively with the drain electrode of second field-effect tube and the driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721399517.8U CN207442809U (en) | 2017-10-26 | 2017-10-26 | A kind of solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721399517.8U CN207442809U (en) | 2017-10-26 | 2017-10-26 | A kind of solid-state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207442809U true CN207442809U (en) | 2018-06-01 |
Family
ID=62293998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721399517.8U Expired - Fee Related CN207442809U (en) | 2017-10-26 | 2017-10-26 | A kind of solid-state relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207442809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681996A (en) * | 2017-10-26 | 2018-02-09 | 北京国科天宏自动化技术有限公司 | A kind of solid-state relay |
-
2017
- 2017-10-26 CN CN201721399517.8U patent/CN207442809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681996A (en) * | 2017-10-26 | 2018-02-09 | 北京国科天宏自动化技术有限公司 | A kind of solid-state relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140218832A1 (en) | Bidirectional hybrid breaker | |
| KR20160099560A (en) | Voltage clipping | |
| CN102916460B (en) | Power supply supply control system and semiconductor integrated circuit | |
| CN203056953U (en) | Driver and bus capacitor discharge circuit thereof | |
| CN107681996A (en) | A kind of solid-state relay | |
| CN203604230U (en) | Control circuit for fan | |
| CN109670348A (en) | The highly reliable universal solid state hard disk rapid physical of one kind destroys circuit and method | |
| CN108631269A (en) | Smart Power Module for resonance inverter | |
| CN105958984A (en) | Fast blocking switch | |
| CN107196269A (en) | A kind of DC protection circuit and its guard method | |
| CN108832696A (en) | Lithium battery group | |
| CN207442809U (en) | A kind of solid-state relay | |
| CN205563548U (en) | Hot plug circuit | |
| CN203840311U (en) | Solid state power controller | |
| CN109830947A (en) | Control is poured in using Multi- Switch | |
| CN103457231B (en) | Intelligent rapid MCR controller with stored energy detection and judgment functions | |
| CN103269099B (en) | Battery charge-discharge circuit | |
| CN209233749U (en) | Driver current-limited startup circuit for DC power-supply system | |
| CN102998515B (en) | Over-current detection and protection circuit for output channel | |
| CN107703824A (en) | Air cooler drive feedback intelligent power supply control system | |
| CN104253407A (en) | Outdoor overcurrent protector suitable for protecting railway circuit safety | |
| CN204243718U (en) | Be suitable for the outdoor use overcurrent protector protecting railway circuit safety | |
| CN106370922A (en) | Solid state power controller and fault current record method | |
| CN101763158B (en) | Power supply monitoring and isolation control system for airborne equipment computer | |
| CN204391717U (en) | A kind of Novel electric surge protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 |