CN212518935U - Solid-state relay with adjustable intelligence - Google Patents
Solid-state relay with adjustable intelligence Download PDFInfo
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- CN212518935U CN212518935U CN202022055007.7U CN202022055007U CN212518935U CN 212518935 U CN212518935 U CN 212518935U CN 202022055007 U CN202022055007 U CN 202022055007U CN 212518935 U CN212518935 U CN 212518935U
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Abstract
The utility model relates to a power electronics technical field specifically is a solid state relay with adjustable intelligence, include: the relay main body comprises a plurality of regulating circuits consisting of power devices and photoelectric couplers, and corresponding rated currents are output by switching on one or more regulating circuits; the detection unit is used for detecting the temperature around the relay main body and the load state of each adjusting circuit and feeding back detection data to the control unit; the control unit receives a control signal input and transmitted by the control signal and detection data fed back by the detection unit, and controls the on-off of the regulating circuit in the relay main body. The utility model has the advantages that: the rated current output by the relay main body is automatically adjusted according to the requirement of the load, so that the requirement of the load is met and the energy consumption is reduced; the control unit also synchronously realizes temperature compensation, and improves the stability and reliability of the relay main body.
Description
Technical Field
The utility model relates to a power electronic technology field specifically is a solid state relay with adjustable intelligence.
Background
At present, solid-state relays widely applied in the field of industrial and automation equipment adopt a one-way or two-way silicon controlled rectifier chip as a core power control device, and a trigger control circuit is added to form an electronic switching device system. The electromagnetic contactor has certain defects due to the working principle and specific structural problems of the electromagnetic contactor, has great hidden dangers in the use process of electrical equipment, is easy to cause unreliable work and various faults, and causes disastrous accidents such as fire and the like due to burning or adhesion of contacts.
The existing solid-state relay is not intelligent enough, cannot select rated current according to the application scene, cannot limit the current of each level according to the requirements of users and the purpose or use of a system, needs to artificially replace the corresponding relay every time, and can cause the pad of a circuit board to be damaged due to heat after being welded for many times; therefore, manpower is wasted, the research and development cost is increased, and the research and development speed is reduced; during operation, particularly in high-power load application, the thyristor can generate larger power consumption and heating problems, and the stability and reliability of the operation of the solid-state relay are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solid-state relay with adjustable intelligence to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an intelligently adjustable solid state relay comprising: the relay main body comprises a plurality of regulating circuits consisting of power devices and photoelectric couplers, and corresponding rated currents are output by switching on one or more regulating circuits; the detection unit is used for detecting the temperature around the relay main body and the load state of each adjusting circuit and feeding back detection data to the control unit; the control unit receives a control signal input and transmitted by the control signal and detection data fed back by the detection unit, and controls the on-off of the regulating circuit in the relay main body to realize the regulation of the rated current output by the relay main body.
As a further aspect of the present invention: the detection unit comprises a temperature detection element, and the temperature detection element is used for detecting the temperatures of the power device, the detected power supply and the regulating circuit and feeding back detection data to the control unit.
As a further aspect of the present invention: the detection unit further comprises a plurality of current sensors, and the current sensors are arranged on the relay main body and used for detecting the load state of the relay main body.
As a further aspect of the present invention: the relay further comprises a heat dissipation element, and the heat dissipation element is used for reducing the temperature of the relay main body.
As a further aspect of the present invention: the control unit controls the on-off of the adjusting circuit through the switch, and the protection element is used for protecting all parts on the adjusting circuit.
As a further aspect of the present invention: the protection element comprises fuses which are connected in series between the photoelectric coupler and the power device respectively and used for protecting the power device.
As a further aspect of the present invention: the adjusting circuit is also provided with an adjustable resistance element, and the control unit adjusts the voltage and the current of the adjusting circuit through the adjustable resistance element.
As a further aspect of the present invention: the relay comprises a relay main body and is characterized in that a relay shell is sleeved outside the relay main body, a plurality of input pins and output pins are arranged on the relay shell, and the input pins and the output pins are respectively connected with corresponding joints of an adjusting circuit.
Compared with the prior art, the beneficial effects of the utility model are that: the rated current output by the relay main body is automatically adjusted according to the requirement of the load, so that the requirement of the load is met, the energy consumption is reduced, and the energy conservation is realized; the control unit adjusts the rated current output by the relay main body to realize temperature compensation synchronously, and the working stability and reliability of the relay main body are improved.
Drawings
Fig. 1 is the embodiment of the present invention provides a schematic structural diagram of an intelligent adjustable solid-state relay.
Fig. 2 is a block diagram of a control unit according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the relay main body in the embodiment of the present invention.
Fig. 4 is a partial circuit diagram of the relay main body in the embodiment of the present invention.
Fig. 5 is a schematic control flow diagram of an embodiment of the present invention, in which the solid-state relay is intelligently adjustable.
Fig. 6 is the embodiment of the present invention, which illustrates a temperature compensation process of the intelligent adjustable solid-state relay.
In the drawings: 1. an input pin I; 2. inputting a pin II; 3. an output pin I; 4. an output pin II; 5. an output pin III; 6. an output pin IV; 7. a heat sink and a thermistor; 8. a relay main body; 9. a detection unit; 10. a control unit; 11. and an output pin V.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Referring to fig. 1-3, in an embodiment of the present invention, an intelligent adjustable solid state relay includes: the relay main body comprises a plurality of regulating circuits consisting of power devices and photoelectric couplers, and corresponding rated currents are output by switching on one or more regulating circuits; the detection unit 9 is used for detecting the temperature around the relay main body 8 and the load state of each adjusting circuit, and feeding back detection data to the control unit 10; the control unit 10 receives a control signal input and transmitted by the control signal and detection data fed back by the detection unit 9, and controls the on-off of the regulating circuit in the relay main body 8, so that the regulation of the rated current output by the relay main body 8 is realized.
Specifically, the intelligent adjustable solid-state relay is connected to a power supply to be tested and is used for driving the power supply to be tested to work according to an external control signal; the method has the following working modes in a normal state: as shown in fig. 3, the control unit controls the corresponding photoelectric coupler 1 (optical coupler 1) to be turned on and controls a part of circuits in one regulating circuit to be turned on, the energized power device 1 outputs a rated current to drive a load (a power source to be measured) through a signal output end, and if the rated current cannot drive the load, the control unit continues to control another part of circuits in one regulating circuit to be turned on; the signal output end outputs a rated current II to drive a load (a power supply to be detected), and if the rated current II cannot drive the load; the control unit controls the corresponding photoelectric coupler 2 (optical coupler 2) to be conducted, the control unit controls a regulating circuit connected with the photoelectric coupler 2 to be conducted, the electrified power device 2 outputs a rated current three driving load (a power source to be tested) through a signal output end, and if the rated current three can drive the load, the current rated current three output is kept; if the load cannot be driven by the rated current III, the optocoupler n is continuously conducted, and meanwhile, the adjusting circuit corresponding to the optocoupler n is switched on until the electrified power device n can drive the load by the rated current n of the signal output end. Before the process begins, the detection unit feeds back the initial state of each component of the regulating circuit to the control unit, and the control unit controls the connection of the subsequent regulating circuit according to the fed-back detection data; after the process is started, the detection unit detects the state change of each component of the regulating circuit in real time and feeds detection data back to the control unit, and the control unit intelligently regulates the switching-on power of each component of the regulating circuit according to the fed-back detection data.
And under the abnormal state of part of regulating circuits: when the intelligent adjustable solid-state relay is connected to a tested power supply, the detection unit detects the initial values of the switching state and the performance adjustment in the relay main body and feeds detection data back to the control unit, so that when the rated current is output to drive the tested power supply (load), the control unit can avoid the control on partial circuits in the adjusting circuit and switch on other normal circuits; the usability of the intelligent adjustable solid-state relay is improved, and the repeatability of the intelligent adjustable solid-state relay is increased.
In addition, in the process that the relay main body outputs rated current to drive a tested power supply (load), heat energy generated by components in the regulating circuit can affect the performance of the relay main body, at the moment, the detecting unit detects the temperature of relevant components in real time and feeds detected temperature data back to the control unit, and the control unit reduces the working power of the relevant components to reduce the temperature, so that the temperature compensation effect is achieved; the mode selection of the relay main body is ensured to be normally carried out, the relay main body can meet the requirement of a load, the stability of the relay main body is ensured, and the efficiency is maximized; the intelligent adjustable solid-state relay has the advantages that efficient and reliable work can be guaranteed when the temperature changes, the contact well performance of the intelligent adjustable solid-state relay is improved, and meanwhile the capacity of the intelligent adjustable solid-state relay load is guaranteed.
In conclusion, the intelligent adjustable solid-state relay has low energy consumption in a standby state; when the load is driven, the control unit can adjust the magnitude of the driving current to meet the load requirement; but also has temperature compensation capability. The stability and the reliability of relay main part work have been improved.
Referring to fig. 1, in another embodiment of the present invention, a relay housing is sleeved outside the relay main body 8, and a plurality of input pins and output pins are arranged on the relay housing, and the input pins and the output pins are respectively connected to corresponding joints of the regulating circuit.
Specifically, the input pins include an input pin I1 and an input pin II2, and the output pins include an output pin I3, an output pin II4, an output pin III5, an output pin IV6, and an output pin V11; respectively connected with corresponding joints of the regulating circuit.
Referring to fig. 4, in another embodiment of the present invention, a switch and a protection element are disposed on the adjusting circuit, the control unit controls the on/off of the adjusting circuit through the switch, and the protection element is used for protecting each component on the adjusting circuit.
The protection element comprises fuses, and the fuses are fuse F1, fuse F2 and fuse F3 respectively; are connected in series between the photoelectric coupler and the power device and used for protecting the power device. The adjusting circuit is also provided with an adjustable resistance element, and the control unit adjusts the voltage and the current of the adjusting circuit through the adjustable resistance element.
The adjustable resistance element comprises an adjustable resistor R1, an adjustable resistor R2, an adjustable resistor R4 and an adjustable resistor R5; further, the detection unit further includes current sensors, and the current sensors are respectively: current sensor a2, current sensor A3, current sensor a4, current sensor C2, current sensor C3, current sensor C4; for detecting the load state of the relay main body 8. The regulating circuit comprises a resistor R3; one end, marked as 1, of an adjustable resistor R1 and one end, marked as a, of the adjustable resistor R1 are connected with the control unit, the other end of the adjustable resistor R1 is connected with the anode of a diode in an optocoupler U1, the cathode of the adjustable resistor R1 is connected with an output pin V11, the collector of a triode of an optocoupler U1 connected to the control unit is connected with one end of a resistor R3, the other end of a resistor R3 is connected with an output pin I3 and is connected with one end of a fuse F3, the emitter of the triode of the optocoupler U1 is connected with one end of a fuse 737F 3, the other end of the fuse F1 is connected with one end of an adjustable resistor R4, the b end of the adjustable resistor R4 is connected with the control unit, the other end of; the current sensor A2 is connected between the adjustable resistor R1 and the optocoupler U1, the current sensor A3 is connected between the adjustable resistor R4 and the base electrode of the power tube Q1, and the current sensor A4 is connected between the fuse F3 and the collector electrode of the power tube Q1; one end of the adjustable resistor R2, which is numbered 2, and one end of the adjustable resistor R2, which is numbered c, are respectively connected with the control unit, the other end of the adjustable resistor R2 is connected with the anode of a diode in the optocoupler U2, the cathode of the adjustable resistor R2 is connected with the control unit through an output pin VI21, the collector of the triode of the optocoupler U2 is connected with one end of a resistor R3, the emitter of the triode of the optocoupler U2 is connected with one end of a fuse F2, the other end of the fuse F2 is connected with one end of an adjustable resistor R5, the d end of the adjustable resistor is connected with the control unit, the other end of the adjustable resistor D is connected with the base of a power tube Q2, the collector of the power tube 539Q 2; the current sensor C2 is connected between the adjustable resistor R2 and the optocoupler U2, the current sensor C3 is connected between the adjustable resistor R5 and the base electrode of the power tube Q2, and the current sensor C4 is connected between one end of the switch S1 and the collector electrode of the power tube Q2; a power transistor Q1 is connected to the emitter of power transistor Q2 and to output pin II 4.
The optocoupler U1 and the optocoupler U2 are used for electrical isolation, so that the control unit and the load are ensured not to interfere with each other, and the adjustable resistor R1, the adjustable resistor R2, the adjustable resistor R4 and the adjustable resistor R5 are controlled by the control unit and are used for adjusting the resistance value of the adjusting circuit so as to limit the switching-on current of each optocoupler and the power tube, so that the switching-on time and the switching-on proportion can be controlled, the tube voltage drop can be effectively reduced, and the power loss is reduced; meanwhile, the influence of the temperature on the relay main body can be reduced; fuse F1, fuse F2 and fuse F3 are used for protecting the safe work of each part, guarantee to cut off the power fast under the condition of overcurrent, and fuse F1, fuse F2 and fuse F3 are recoverable type simultaneously, are favorable to reusing. The current sensor A2, the current sensor A3, the current sensor A4, the current sensor C2, the current sensor C3 and the current sensor C4 are respectively used for detecting the current at the connection positions of the current sensors, and the control unit is ensured to accurately control each adjusting circuit. The switch S1 can be selectively closed or opened under the control of the control unit to meet different rated currents.
As shown in fig. 5, the control unit works as follows: 1) the control unit initializes each parameter of each adjusting circuit and detects the initial position of each adjustable resistor and the state of the switch; 2) waiting for the instruction of the signal input unit, and jumping to the step 3) when receiving a control signal transmitted by the control signal input, namely a relay action instruction, or executing the step 2); 3) the control unit sends an instruction to the optocoupler U1, the optocoupler U1 acts, meanwhile, the detection unit detects data and feeds the data back to the control unit in real time, whether the path meets the current requirement of the load or not is judged, if yes, the circuit works normally, and if not, the circuit jumps to the step 4); 4) the control unit adjusts the resistance values of the adjustable resistor R1 and the adjustable resistor R4, increases the conduction rate of the optocoupler U1 and the power tube Q1, judges whether the current requirement of the load is met by the current path, normally works if the current requirement of the load is met, and jumps to the step 5 if the current requirement of the load is not met); 5) The control unit sends an instruction to the switch S1 and the optocoupler U1, the switch S1 is closed, the optocoupler U2 acts at the same time, a parallel mode with the power tube Q1 and the power tube Q2 is carried out, whether the current requirement of the load is met by the path is judged, if yes, the circuit normally works, and if not, the circuit jumps to the step 6); 6) the control unit adjusts the resistance values of the adjustable resistor R1, the adjustable resistor R4, the adjustable resistor R2 and the adjustable resistor R5, increases the conduction rates of the optocoupler U1 and the power tube Q1, and the optocoupler U2 and the power tube Q2, judges whether the path meets the current requirement of the load, works normally if the path meets the current requirement of the load, and jumps to the step 7 if the path does not meet the current requirement of the load; 7) and selecting other modules in the relay main body to ensure that the current requirement is met, and entering a working state.
Further, step 8) is performed after the above-mentioned step 7); 8) judging whether temperature compensation is needed, if not, continuing the state work of the step 7), and if so, carrying out temperature compensation control. Temperature compensation guarantees that when the temperature changes, the intelligent adjustable solid-state relay can work efficiently and reliably, contact well performance of the intelligent adjustable solid-state relay is improved, and load capacity is guaranteed.
Referring to fig. 4, in another embodiment of the present invention, the detecting unit 9 includes a temperature detecting element, and the temperature detecting element is used for detecting the temperatures of the power device, the power source to be detected, and the regulating circuit, and feeding back the detected data to the control unit.
The temperature detection element comprises a thermistor, and the thermistor detects the temperatures of the power device, the power supply to be detected and the regulating circuit and feeds detection data back to the control unit. The control unit adopts a microprocessor; and receiving and processing the feedback data of the detection unit through a microprocessor, and controlling the relay main body to work.
As shown in fig. 6, when the resistance value of the thermistor triggers the temperature compensation control of the microprocessor, the microprocessor determines the current temperature, calculates the temperature compensation coefficient, and then adjusts the adjustable resistors R1 and R4 in the adjusting circuit to reduce the conduction rate, thereby reducing the temperature and realizing the temperature compensation.
Referring to fig. 1, in another embodiment of the present invention, the relay further includes a heat dissipation element for reducing the temperature of the relay main body.
The heat dissipation element includes a heat dissipation plate, the heat dissipation plate and the thermistor 7 are disposed at the bottom of the power device, and the heat dissipation plate reduces the temperature around the power device of the relay main body 8. The relay has the advantages that reliable work of all parts can be guaranteed when the temperature changes, contact well performance of the relay main body 8 is improved, and meanwhile load capacity is guaranteed.
The utility model discloses a theory of operation: the intelligent adjustable solid-state relay is connected to a tested power supply and used for driving the tested power supply to work according to an external control signal; the method has the following working modes in a normal state: as shown in fig. 3, the control unit controls the corresponding photoelectric coupler 1 (optical coupler 1) to be turned on and controls a part of circuits in one regulating circuit to be turned on, the energized power device 1 outputs a rated current to drive a load (a power source to be measured) through a signal output end, and if the rated current cannot drive the load, the control unit continues to control another part of circuits in one regulating circuit to be turned on; the signal output end outputs a rated current II to drive a load (a power supply to be detected), and if the rated current II cannot drive the load; the control unit controls the corresponding photoelectric coupler 2 (optical coupler 2) to be conducted, the control unit controls a regulating circuit connected with the photoelectric coupler 2 to be conducted, the electrified power device 2 outputs a rated current three driving load (a power source to be tested) through a signal output end, and if the rated current three can drive the load, the current rated current three output is kept; if the load cannot be driven by the rated current III, the optocoupler n is continuously conducted, and meanwhile, the adjusting circuit corresponding to the optocoupler n is switched on until the electrified power device n can drive the load by the rated current n of the signal output end.
It should be noted that the microprocessor and the photoelectric coupler adopted by the present invention are applications of the prior art, and those skilled in the art can implement the functions to be achieved according to the related descriptions, or implement the technical characteristics to be achieved through the similar techniques, and they are not described in detail herein.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. An intelligently adjustable solid state relay, comprising:
the relay main body comprises a plurality of regulating circuits consisting of power devices and photoelectric couplers, and corresponding rated currents are output by switching on one or more regulating circuits; and
the relay comprises a relay body, a detection unit and a control unit, wherein the relay body is respectively connected with the detection unit and the control unit, and the detection unit is used for detecting the temperature around the relay body and the load state of each adjusting circuit and feeding back detection data to the control unit;
the control unit receives a control signal input and transmitted by the control signal and detection data fed back by the detection unit, and controls the on-off of the regulating circuit in the relay main body to realize the regulation of the rated current output by the relay main body.
2. The intelligent adjustable solid-state relay according to claim 1, wherein the detection unit comprises a temperature detection element, and the temperature detection element is used for detecting the temperature of the power device, the power supply to be detected and the adjusting circuit and feeding back detection data to the control unit.
3. The intelligently adjustable solid state relay according to claim 2, wherein said detection unit further comprises a plurality of current sensors disposed on the relay body for detecting a load state of the relay body.
4. The intelligently adjustable solid state relay of claim 1, further comprising a heat sink element for reducing a temperature of the relay body.
5. The intelligent adjustable solid-state relay according to claim 1, wherein the adjusting circuit is provided with a switch and a protection element, the control unit controls the on/off of the adjusting circuit through the switch, and the protection element is used for protecting each component on the adjusting circuit.
6. The intelligently adjustable solid state relay according to claim 5, wherein the protection element comprises fuses, each of the fuses being connected in series between a photocoupler and a power device for protecting the power device.
7. A smart adjustable solid state relay according to claim 5, wherein the adjusting circuit is further provided with an adjustable resistive element, and the control unit adjusts the voltage and current of the adjusting circuit through the adjustable resistive element.
8. An intelligent adjustable solid-state relay according to claim 1, wherein the relay body is externally sleeved with a relay housing, the relay housing is provided with a plurality of input pins and output pins, and the input pins and the output pins are respectively connected with corresponding joints of the adjusting circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055007.7U CN212518935U (en) | 2020-09-18 | 2020-09-18 | Solid-state relay with adjustable intelligence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055007.7U CN212518935U (en) | 2020-09-18 | 2020-09-18 | Solid-state relay with adjustable intelligence |
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| CN212518935U true CN212518935U (en) | 2021-02-09 |
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Address after: Floor 2, Building 2, Electronic Information Industry Park, South of Zuidong Street and West of Jinxiu Road, Luannan Economic Development Zone, Tangshan City, Hebei Province 063599 Patentee after: Tangshan Hangqing Microelectronics Co.,Ltd. Country or region after: China Address before: 063500 qingtuoying Town, LUANNAN COUNTY, Tangshan City, Hebei Province Patentee before: Tangshan Hangqing New Energy Co.,Ltd. Country or region before: China |