CN110545143B - Electric control insulation circuit and electric control converter - Google Patents
Electric control insulation circuit and electric control converter Download PDFInfo
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- CN110545143B CN110545143B CN201910889977.6A CN201910889977A CN110545143B CN 110545143 B CN110545143 B CN 110545143B CN 201910889977 A CN201910889977 A CN 201910889977A CN 110545143 B CN110545143 B CN 110545143B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
- H04B10/802—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections for isolation, e.g. using optocouplers
Abstract
The invention provides an electric control insulating circuit and an electric control converter, wherein a basic insulating tape is arranged between a converter control circuit and a communication circuit, an additional insulating tape is arranged between the communication circuit and a WiFi circuit, and a reinforcing insulating tape is arranged between the WiFi circuit and the converter control circuit. Meanwhile, a first flyback converter is arranged in the area where the converter control circuit is located and the area where the communication circuit is located, an isolation power supply is formed between the converter control circuit and the communication circuit, a second flyback converter is arranged in the area where the communication circuit is located and the area where the WiFi circuit is located, and the isolation power supply is formed between the communication circuit and the WiFi circuit; on the premise of providing power for the converter control circuit, the communication circuit and the WiFi circuit, the danger possibly caused by electric shock is avoided by adopting an isolation mode.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to an electric control insulation circuit and an electric control converter.
Background
With the development of the technology level and the transformation of the consumer consumption concept, the concept of smart home is applied to the design of many household appliances. The intelligent home is characterized in that a home is used as a platform, facilities related to home life are integrated by utilizing a comprehensive wiring technology, a network communication technology, a safety precaution technology, an automatic control technology and an audio and video technology, an efficient management system of home facilities and family schedule affairs is constructed, home safety, convenience, comfortableness and artistry are improved, and an environment-friendly and energy-saving living environment is realized.
Inevitably, the air-conditioning industry is also influenced by the intelligent home concept, and the air-conditioning with the WiFi function is provided, so that the user can freely control the functions of starting, shutting down, temperature regulation and the like of the air-conditioning through the air-conditioning split machine remotely controlled by the mobile phone. However, when the WiFi module is installed on the electronic control converter, since the WiFi module is a silver circuit, the WiFi module must be insulated from the electronic control insulating circuit, but the existing electronic control insulating circuit only performs insulating processing on components inside the circuit, which cannot provide a good insulating environment, and cannot ensure effective transmission of WiFi signals.
Disclosure of Invention
The invention mainly aims to provide an electric control insulating circuit and an electric control converter, and aims to solve the problems that the existing electric control insulating circuit is not designed in place and cannot play a good insulating role.
In order to achieve the above object, the present invention provides an electronic control insulation circuit, which includes a converter control circuit, a communication circuit, a WiFi circuit, a basic insulation tape, an additional insulation tape, a reinforcing insulation tape, a first flyback converter, and a second flyback converter;
the base insulating tape is disposed between the inverter control circuit and the communication circuit, the additional insulating tape is disposed between the communication circuit and the WiFi circuit, and the reinforcing insulating tape is disposed between the inverter control circuit and the WiFi circuit;
the area of the converter control circuit is provided with a primary coil of the first flyback converter, the area of the communication circuit is provided with a secondary coil of the first flyback converter, the area of the communication circuit is provided with a primary coil of the second flyback converter, and the area of the WiFi circuit is provided with a secondary coil of the second flyback converter.
Optionally, the electronic control insulation circuit further includes an optical coupling communication circuit and an optical coupling relay circuit, where the optical coupling relay circuit includes a first optical coupling relay sub-circuit and a second optical coupling relay sub-circuit;
the optical coupling communication circuit is arranged between the converter control circuit and the communication circuit, the first optical coupling relay sub-circuit is arranged between the converter control circuit and the communication circuit, and the second optical coupling relay sub-circuit is arranged between the communication circuit and the WiFi circuit;
the optical coupler communication circuit is used for realizing the communication between the converter control circuit and the communication circuit;
the first optical coupling relay sub-circuit and the second optical coupling relay sub-circuit are used for realizing communication between the converter control circuit and the WiFi circuit.
Optionally, the insulation distance of the primary insulation tape is less than the insulation distance of the additional insulation tape;
the insulation distance of the additional insulation tape is smaller than the insulation distance of the reinforcing insulation tape.
Optionally, the converter control circuit includes a converter, a first capacitor, a first diode, a transformer, a first triode, a second triode, and an electronic control processing chip;
the first end of the transformer primary coil is externally connected with an input voltage, the second end of the transformer primary coil is connected with the collector electrode of the first triode, the first end of the transformer secondary coil is connected with the anode of the first diode, the second end of the transformer secondary coil is connected with the output end of the converter, and the cathode of the first diode is connected with the input end of the converter;
an emitting electrode of the first triode is connected with a collecting electrode of the second triode, an emitting electrode of the second triode is connected with a first end of the first capacitor, and a second end of the first capacitor is connected with a base electrode of the first triode;
the first end of the first capacitor is grounded, and the base electrode of the second triode is connected with the electronic control processing chip.
Optionally, the converter control circuit further comprises a second capacitor and a second diode;
a first end of the second capacitor is connected with a cathode of the first diode and an input end of the converter respectively, and a second end of the second capacitor is connected with an output end of the converter;
the anode of the second diode is respectively connected with the emitter of the first triode and the collector of the second triode, and the cathode of the second diode is respectively connected with the base of the first triode and the second end of the first capacitor.
Optionally, the communication circuit includes a micro control unit, a communication driving chip, a third capacitor, a first resistor, and a second resistor;
the power end of the communication driving chip is connected with the first end of the first resistor, the second end of the first resistor is externally connected with a low-voltage power supply, the grounding end of the communication driving chip is grounded, the output end of the communication driving chip is connected with the input end of the micro control unit, the input end of the communication driving chip is connected with the first end of the third capacitor, the second end of the third capacitor is connected with the first output end of the micro control unit, the first end of the second resistor is grounded, and the second end of the second resistor is respectively connected with the first end of the third capacitor and the input end of the communication driving chip.
Optionally, the communication circuit comprises a third resistor, a fourth resistor and a fifth resistor;
the first end of the third resistor is connected with the second output end of the micro control unit, and the second end of the third resistor is used as the output end of the communication circuit;
the first end of the fourth resistor is grounded, and the second end of the fourth resistor is connected with the second end of the third resistor;
and the first end of the fifth resistor is connected with the third output end of the micro control unit, and the second end of the fifth resistor is used as the output end of the communication circuit.
Optionally, the WiFi circuit includes a WiFi chip, a third diode, a fourth capacitor, and a sixth resistor;
the grounding end of the WiFi chip is grounded, the input end of the WiFi chip is connected with the anode of the third diode, the cathode of the third diode is connected with the cathode of the fourth diode, the anode of the fourth diode is respectively connected with the first end of the sixth resistor and the output end of the WiFi chip, and the second end of the sixth resistor is used as the output end of the WiFi circuit;
and the first end of the fourth capacitor is respectively connected with the cathode of the third diode and the cathode of the fourth diode, and the second end of the fourth capacitor is grounded.
Optionally, the WiFi circuit further includes a seventh resistor and a fifth capacitor;
a first end of the seventh resistor is connected with an anode of the third diode, and a second end of the seventh resistor is used as an input end of the WiFi circuit;
and the first end of the fifth capacitor is respectively connected with the cathode of the fourth diode and the first end of the fourth capacitor, and the second end of the fifth capacitor is connected with the second end of the fourth capacitor.
Further, to achieve the above object, the present invention also provides an electric control inverter including an inverter control circuit configured as the inverter control circuit described above.
The invention provides an electric control insulating circuit and an electric control converter, wherein the electric control insulating circuit comprises a converter control circuit, a communication circuit, a WiFi circuit, a basic insulating tape, an additional insulating tape, a reinforcing insulating tape, a first flyback converter and a second flyback converter; the basic insulating tape is arranged between the converter control circuit and the communication circuit, the additional insulating tape is arranged between the communication circuit and the WiFi circuit, and the reinforcing insulating tape is arranged between the converter control circuit and the WiFi circuit; the area of the converter control circuit is provided with a primary coil of a first flyback converter, the area of the communication circuit is provided with a secondary coil of the first flyback converter, the area of the communication circuit is provided with a primary coil of a second flyback converter, and the area of the WiFi circuit is provided with a secondary coil of the second flyback converter.
According to the invention, the basic insulating tape is arranged between the converter control circuit and the communication circuit, the additional insulating tape is arranged between the communication circuit and the WiFi circuit, and the reinforcing insulating tape is arranged between the WiFi circuit and the converter control circuit. Meanwhile, a first flyback converter is arranged in the area where the converter control circuit is located and the area where the communication circuit is located, an isolation power supply is formed between the converter control circuit and the communication circuit, a second flyback converter is arranged in the area where the communication circuit is located and the area where the WiFi circuit is located, and the isolation power supply is formed between the communication circuit and the WiFi circuit; through the mode, on the premise of providing power for the converter control circuit, the communication circuit and the WiFi circuit, the danger possibly caused by electric shock is avoided by adopting an isolation mode, and the insulation requirement is further met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an electrically controlled isolation circuit according to the present invention;
FIG. 2 is a first partial schematic view of the electrically controlled isolation circuit of the present invention;
FIG. 3 is a second partial schematic view of the electrically controlled isolation circuit of the present invention;
fig. 4 is a third partial schematic diagram of the electrically controlled insulation circuit according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Converter control circuit | Q2 | |
| 20 | Communication circuit | R1 | A |
| 30 | WiFi circuit | R2 | |
| 40 | Basic insulating tape | R3 | |
| 50 | Additional insulating tape | R4 | |
| 60 | Reinforced insulating tape | R5 | |
| 70 | |
21 | |
| 80 | |
22 | Micro control unit |
| 11 | Converter with a voltage regulator | C3 | |
| 12 | Electric control processing chip | R6 | Sixth resistor |
| D1 | First diode | R7 | Seventh resistor |
| D2 | Second diode | D3 | Third diode |
| C1 | First capacitor | D4 | Fourth diode |
| C2 | Second capacitor | C4 | Fourth capacitor |
| T1 | Transformer device | C5 | Fifth capacitor |
| Q1 | A |
31 | WiFi chip |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an electronic control insulation circuit according to the present invention, where the electronic control insulation circuit includes a converter control circuit 10, a communication circuit 20, a WiFi circuit 30, a basic insulation tape 40, an additional insulation tape 50, a reinforcing insulation tape 60, a first flyback converter 70, and a second flyback converter 80; the basic insulating tape 40 is disposed between the inverter control circuit 10 and the communication circuit 20, the additional insulating tape 50 is disposed between the communication circuit 20 and the WiFi circuit 30, and the reinforcing insulating tape 60 is disposed between the inverter control circuit 10 and the WiFi circuit 30; the area where the converter control circuit 10 is located is provided with the primary coil of the first flyback converter 70, the area where the communication circuit 20 is located is provided with the secondary coil of the first flyback converter 70, the area where the communication circuit 20 is located is provided with the primary coil of the second flyback converter 80, and the area where the WiFi circuit 30 is located is provided with the secondary coil of the second flyback converter 80.
The selv (safe extra-low voltage) circuit is a secondary circuit that is properly designed and protected so that the voltage between any two accessible components, and between any accessible component and the protective ground of the device, does not exceed safe values under normal conditions or single fault conditions. Since the communication circuit 20 is an elv (extra-low voltage) circuit and the converter control circuit 10 is a high-voltage circuit, a basic insulating tape 40 is provided between the converter control circuit 10 and the communication circuit 20 to isolate the high-voltage circuit from the low-voltage circuit in order to insulate the converter control circuit 10 from the communication circuit 20; in order to achieve mutual isolation between the selv circuit and the elv circuit, an additional insulating tape 50 is provided between the communication circuit 20 and the WiFi circuit 30, ensuring that the WiFi circuit 30 remains a secure circuit that can be touched by a human hand after the primary insulating tape 40 fails; in order to achieve insulation between the inverter control circuit 10 and the WiFi circuit 30, a reinforcing insulating tape 60 is disposed between the inverter control circuit 10 and the WiFi circuit 30 to isolate the inverter control circuit 10 from the WiFi circuit 30, and in addition, a certain creepage distance and an electrical gap need to be designed between the inverter control circuit 10 and the WiFi circuit 30 to meet the relevant standards of the reinforcing insulating tape 60.
Meanwhile, the electronic control insulation circuit is further provided with a first flyback converter 70 and a second flyback converter 80, and the first flyback converter 70 and the second flyback converter 80 need to be designed in an insulation manner on a primary coil, a secondary coil and pins. Arranging a primary coil of the first flyback converter 70 in the area where the converter control circuit 10 is located, arranging a secondary coil of the first flyback converter 70 in the area where the communication circuit 20 is located, and providing an isolated power supply for the communication circuit 20 to work between the converter control circuit 10 and the communication circuit 20 through the work of the first flyback converter 70; the primary coil of the second flyback converter 80 is disposed in the area where the communication circuit 20 is located, the secondary coil of the second flyback converter 80 is disposed in the area where the WiFi circuit 30 is located, and an isolation circuit for the WiFi circuit 30 to operate is provided between the communication circuit 20 and the WiFi circuit 30 through the operation of the second flyback converter 80.
In the present embodiment, the basic insulating tape 40 is provided between the inverter control circuit 10 and the communication circuit 20, the additional insulating tape 50 is provided between the communication circuit 20 and the WiFi circuit 30, and the reinforcing insulating tape 60 is provided between the WiFi circuit 30 and the inverter control circuit 10, so that the inverter control circuit 10, the communication circuit 20, and the WiFi circuit 30 are insulated from each other, and the desired insulating effect is achieved. Meanwhile, a first flyback converter 70 is arranged in the area where the converter control circuit 10 is located and the area where the communication circuit 20 is located, an isolated power supply is formed between the converter control circuit 10 and the communication circuit 20, a second flyback converter 80 is arranged in the area where the communication circuit 20 is located and the area where the WiFi circuit 30 is located, and an isolated power supply is formed between the communication circuit 20 and the WiFi circuit 30; by the above method, on the premise of providing power for the converter control circuit 10, the communication circuit 20 and the WiFi circuit 30, the danger caused by electric shock is avoided by adopting an isolation method, and the insulation requirement is further met.
Further, the electronic control insulation circuit further comprises an optical coupling communication circuit 20 and an optical coupling relay circuit, wherein the optical coupling relay circuit comprises a first optical coupling relay sub-circuit and a second optical coupling relay sub-circuit; the optical coupling communication circuit 20 is arranged between the converter control circuit 10 and the communication circuit 20, the first optical coupling relay sub-circuit is arranged between the converter control circuit 10 and the communication circuit 20, and the second optical coupling relay sub-circuit is arranged between the communication circuit 20 and the WiFi circuit 30; the optical coupler communication circuit 20 is used for realizing communication between the converter control circuit 10 and the communication circuit 20; and the first optical coupling relay sub-circuit and the second optical coupling relay sub-circuit are used for realizing the communication between the converter control circuit 10 and the WiFi circuit 30.
Further, the insulation distance of the basic insulation tape 40 is smaller than that of the additional insulation tape 50; the insulation distance of the additional insulation tape 50 is smaller than that of the reinforcing insulation tape 60.
In this embodiment, the electronic control insulating circuit further includes an optical coupling communication circuit 20 (not labeled) and an optical coupling relay circuit (not labeled), wherein the optical coupling relay circuit includes a first optical coupling relay sub-circuit and a second optical coupling relay sub-circuit, and the mutual communication between the converter control circuit 10 and the communication circuit 20, and between the converter control circuit 10 and the WiFi circuit 30 is realized by setting the optical coupling communication circuit 20 and the optical coupling relay circuit. It is easy to understand that, since neither the converter control circuit 10 nor the communication circuit 20 is a safety circuit, the isolated communication between the converter control circuit 10 and the communication circuit 20 can be realized only by providing one optocoupler communication circuit 20 between them. Because the WiFi circuit 30 is a selv circuit, which is a safety circuit, the communication between the WiFi circuit 30 and the converter control circuit 10 needs to realize two-stage isolation, the one-stage simple optical coupling isolation communication does not realize the requirement of double insulation, the optical coupling relay circuit includes a first optical coupling relay sub-circuit and a second optical coupling relay sub-circuit, two-stage isolation is realized between the WiFi circuit 30 and the converter control circuit 10 through the first optical coupling relay sub-circuit and the second optical coupling relay sub-circuit, thereby enabling communication between the converter control circuit 10 and the communication circuit. As an embodiment, the structures of the wide-body optocoupler in the optocoupler communication circuit 20 and the optocoupler relay circuit are consistent with those of a common optocoupler, and in order to achieve a better insulation effect, the crawler distance and the electrical gap of the wide-body optocoupler body can be increased, and preferably, the wide-body optocoupler can be an ACNT _ hxx series optocoupler of AVAGO.
In order to achieve better insulation effect, the insulation distance of the reinforcing insulation tape 60 should be greater than that of the additional insulation tape 50, and the insulation distance of the additional insulation tape 50 should be greater than that of the basic insulation tape 40. Preferably, the insulation distance of the basic insulation tape 40 is set to 4mm when the power supply voltage is 220V, in which case the insulation distance of the additional insulation tape 50 is set to 8mm, and the insulation distance of the reinforcing insulation tape 60 is set to 8mm or more.
Further, referring to fig. 2, fig. 2 is a first partial schematic diagram of the electric control insulation circuit of the present invention, the converter control circuit 10 includes a converter 11, a first capacitor C1, a first diode D1, a transformer T1, a first transistor Q1, a second transistor Q2, and an electric control processing chip 12; a first end of a primary coil of the transformer T1 is externally connected with an input voltage, a second end of a primary coil of the transformer T1 is connected with a collector of the first triode Q1, a first end of a secondary coil of the transformer T1 is connected with an anode of the first diode D1, a second end of a secondary coil of the transformer T1 is connected with an output end of the converter 11, and a cathode of the first diode D1 is connected with an input end of the converter 11; an emitter of the first triode Q1 is connected to a collector of the second triode Q2, an emitter of the second triode Q2 is connected to a first end of the first capacitor C1, and a second end of the first capacitor C1 is connected to a base of the first triode Q1; the first end of the first capacitor C1 is grounded, and the base of the second transistor Q2 is connected to the electronic control processing chip 12.
Further, the converter control circuit 10 further includes a second capacitor C2 and a second diode D2; a first end of the second capacitor C2 is connected to the cathode of the first diode D1 and the input end of the converter 11, respectively, and a second end of the second capacitor C2 is connected to the output end of the converter 11; an anode of the second diode D2 is connected to an emitter of the first transistor Q1 and a collector of the second transistor Q2, respectively, and a cathode of the second diode D2 is connected to a base of the first transistor Q1 and a second end of the first capacitor C1, respectively.
In this embodiment, the supply voltage in the converter control circuit 10 is related to the windings of the coil of the transformer T1, and the more windings of the coil of the transformer T1, the greater the voltage that the converter control circuit 10 needs to provide. In addition, the insulation layer between the primary winding and the secondary winding of the transformer T1 must meet the certification requirement of basic insulation, and the creepage distance and the electrical clearance between the different pins in the electronic control processing chip 12 also need to meet the requirement of basic insulation. The converter control circuit 10 is connected with the communication circuit 20 through the optical coupling communication circuit 20, and is connected with the WiFi circuit 30 through the optical coupling relay circuit, and the electronic control processing chip 12 in the converter control circuit 10 controls the channel circuit and the WiFi circuit 30 to work. It is easily understood that the inverter control circuit 10 in the present embodiment can be configured in other configurations, and the present embodiment is not specifically described here.
Further, referring to fig. 3, fig. 3 is a second partial schematic diagram of the electrically controlled insulating circuit of the present invention, in which the communication circuit 20 includes a micro control unit 22, a communication driving chip 21, a third capacitor C3, a first resistor R1, and a second resistor R2; the power supply end of the communication driving chip 21 is connected with the first end of the first resistor R1, the second end of the first resistor R1 is externally connected with a low-voltage power supply, the ground end of the communication driving chip 21 is grounded, the output end of the communication driving chip 21 is connected with the input end of the micro-control unit 22, the input end of the communication driving chip 21 is connected with the first end of the third capacitor C3, the second end of the third capacitor C3 is connected with the first output end of the micro-control unit 22, the first end of the second resistor R2 is grounded, and the second end of the second resistor R2 is respectively connected with the first end of the third capacitor C3 and the input end of the communication driving chip 21.
Further, the communication circuit 20 includes a third resistor R3, a fourth resistor R4, and a fifth resistor R5; a first terminal of the third resistor R3 is connected to a second output terminal of the micro control unit 22, and a second terminal of the third resistor R3 is used as an output terminal of the communication circuit 20; a first end of the fourth resistor R4 is grounded, and a second end of the fourth resistor R4 is connected with a second end of the third resistor R3; a first terminal of the fifth resistor R5 is connected to the third output terminal of the micro control unit 22, and a second terminal of the fifth resistor R5 is used as the output terminal of the communication circuit 20.
The communication circuit 20 includes a communication driving chip 21 and a micro control unit 22, and since the communication circuit 20 is connected to the converter control circuit 10 through the optical coupling communication circuit 20, the communication driving chip 21 controls the communication driving chip 21 to output different signals according to an instruction sent by the electronic control processing chip 12, and the communication circuit 20 can also adjust the working mode of the converter control circuit 10 by sending a corresponding instruction to the converter control circuit 10. It is easily understood that the communication circuit 20 in the present embodiment can be configured in other structures, and the present embodiment is not specifically described here.
Further, referring to fig. 4, fig. 4 is a third partial schematic view of the electrically controlled insulating circuit of the present invention, in which the WiFi circuit 30 includes a WiFi chip 31, a third diode D3, a fourth diode D4, a fourth capacitor C4, a sixth resistor R6, a seventh resistor R7, and a fifth capacitor C5; the ground terminal of the WiFi chip 31 is grounded, the input terminal of the WiFi chip 31 is connected to the anode of the third diode D3, the cathode of the third diode D3 is connected to the cathode of the fourth diode D4, the anode of the fourth diode D4 is connected to the first terminal of the sixth resistor R6 and the output terminal of the WiFi chip 31, respectively, and the second terminal of the sixth resistor R6 is used as the output terminal of the WiFi circuit 30; a first end of the fourth capacitor C4 is connected to the cathode of the third diode D3 and the cathode of the fourth diode D4, respectively, and a second end of the fourth capacitor C4 is grounded; a first end of the seventh resistor R7 is connected to the anode of the third diode D3, and a second end of the seventh resistor R7 is used as the input end of the WiFi circuit 30; a first terminal of the fifth capacitor C5 is connected to the cathode of the fourth diode D4 and the first terminal of the fourth capacitor C4, respectively, and a second terminal of the fifth capacitor C5 is connected to the second terminal of the fourth capacitor C4.
In this embodiment, the WiFi circuit 30 establishes a communication connection with an external data hotspot through the configured WiFi chip 31, so that the air conditioner has a WiFi function. It is easy to understand that, certain insulation designs are also required between different pins in the WiFi chip 31, so as to further meet the insulation requirements. It is to be understood that the WiFi circuit 30 in the present embodiment can be configured in other structures, and the present embodiment is not specifically set forth herein.
Further, the present invention also provides an electronic control converter, which includes an electronic control insulating circuit, and the structure of the electronic control insulating circuit can refer to the above embodiments, and is not described herein again. It should be understood that, because the electronic control converter of the present embodiment adopts the technical solution of the above electronic control insulating circuit, the electronic control converter has all the beneficial effects of the above electronic control insulating circuit.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An electric control insulation circuit is applied to intelligent household equipment and is characterized by comprising a converter control circuit, a communication circuit, a WiFi circuit, a basic insulation tape, an additional insulation tape, a reinforcing insulation tape, a first flyback converter and a second flyback converter;
the base insulating tape is disposed between the inverter control circuit and the communication circuit, the additional insulating tape is disposed between the communication circuit and the WiFi circuit, and the reinforcing insulating tape is disposed between the inverter control circuit and the WiFi circuit;
the area of the converter control circuit is provided with a primary coil of the first flyback converter, the area of the communication circuit is provided with a secondary coil of the first flyback converter, the area of the communication circuit is provided with a primary coil of the second flyback converter, and the area of the WiFi circuit is provided with a secondary coil of the second flyback converter;
the converter control circuit comprises an electric control processing chip, and the electric control processing chip controls the communication circuit and the WiFi circuit to work;
the electric control insulation circuit further comprises an optical coupling relay circuit, and the optical coupling relay circuit comprises a first optical coupling relay sub-circuit and a second optical coupling relay sub-circuit; the first optical coupling relay sub-circuit is arranged between the converter control circuit and the communication circuit, and the second optical coupling relay sub-circuit is arranged between the communication circuit and the WiFi circuit; the first optical coupling relay sub-circuit and the second optical coupling relay sub-circuit are used for realizing communication between the converter control circuit and the WiFi circuit.
2. The electrically controlled isolation circuit of claim 1, further comprising an optocoupler communication circuit;
the optical coupling communication circuit is arranged between the converter control circuit and the communication circuit;
and the optical coupler communication circuit is used for realizing the communication between the converter control circuit and the communication circuit.
3. An electrically controlled insulating circuit according to claim 1, characterised in that the insulating distance of the basic insulating tape is smaller than the insulating distance of the additional insulating tape;
the insulation distance of the additional insulation tape is smaller than the insulation distance of the reinforcing insulation tape.
4. The electrically controlled insulating circuit according to claim 1, wherein the inverter control circuit comprises an inverter, a first capacitor, a first diode, a transformer, a first transistor, a second transistor, and an electrically controlled processing chip;
the first end of the transformer primary coil is externally connected with an input voltage, the second end of the transformer primary coil is connected with the collector electrode of the first triode, the first end of the transformer secondary coil is connected with the anode of the first diode, the second end of the transformer secondary coil is connected with the output end of the converter, and the cathode of the first diode is connected with the input end of the converter;
an emitting electrode of the first triode is connected with a collecting electrode of the second triode, an emitting electrode of the second triode is connected with a first end of the first capacitor, and a second end of the first capacitor is connected with a base electrode of the first triode;
the first end of the first capacitor is grounded, and the base electrode of the second triode is connected with the electronic control processing chip.
5. The electrically controlled isolation circuit according to claim 4, wherein the inverter control circuit further comprises a second capacitor and a second diode;
a first end of the second capacitor is connected with a cathode of the first diode and an input end of the converter respectively, and a second end of the second capacitor is connected with an output end of the converter;
the anode of the second diode is respectively connected with the emitter of the first triode and the collector of the second triode, and the cathode of the second diode is respectively connected with the base of the first triode and the second end of the first capacitor.
6. The electrically controlled insulation circuit according to claim 1, wherein the communication circuit comprises a micro control unit, a communication driving chip, a third capacitor, a first resistor and a second resistor;
the power end of the communication driving chip is connected with the first end of the first resistor, the second end of the first resistor is externally connected with a low-voltage power supply, the grounding end of the communication driving chip is grounded, the output end of the communication driving chip is connected with the input end of the micro control unit, the input end of the communication driving chip is connected with the first end of the third capacitor, the second end of the third capacitor is connected with the first output end of the micro control unit, the first end of the second resistor is grounded, and the second end of the second resistor is respectively connected with the first end of the third capacitor and the input end of the communication driving chip.
7. An electrically controlled insulating circuit according to claim 6, characterised in that the communication circuit comprises a further third resistor, a fourth resistor and a fifth resistor;
the first end of the third resistor is connected with the second output end of the micro control unit, and the second end of the third resistor is used as the output end of the communication circuit;
the first end of the fourth resistor is grounded, and the second end of the fourth resistor is connected with the second end of the third resistor;
and the first end of the fifth resistor is connected with the third output end of the micro control unit, and the second end of the fifth resistor is used as the output end of the communication circuit.
8. The electrically controlled isolation circuit of claim 1, wherein the WiFi circuit comprises a WiFi chip, a third diode, a fourth capacitor, and a sixth resistor;
the grounding end of the WiFi chip is grounded, the input end of the WiFi chip is connected with the anode of the third diode, the cathode of the third diode is connected with the cathode of the fourth diode, the anode of the fourth diode is respectively connected with the first end of the sixth resistor and the output end of the WiFi chip, and the second end of the sixth resistor is used as the output end of the WiFi circuit;
and the first end of the fourth capacitor is respectively connected with the cathode of the third diode and the cathode of the fourth diode, and the second end of the fourth capacitor is grounded.
9. The electrically controlled isolation circuit of claim 8, wherein the WiFi circuit further comprises a seventh resistor and a fifth capacitor;
a first end of the seventh resistor is connected with an anode of the third diode, and a second end of the seventh resistor is used as an input end of the WiFi circuit;
and the first end of the fifth capacitor is respectively connected with the cathode of the fourth diode and the first end of the fourth capacitor, and the second end of the fifth capacitor is connected with the second end of the fourth capacitor.
10. An electrically controlled converter, characterized in that it comprises an electrically controlled isolation circuit configured as an electrically controlled isolation circuit according to any of claims 1-9.
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| CN201910889977.6A CN110545143B (en) | 2019-09-19 | 2019-09-19 | Electric control insulation circuit and electric control converter |
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| CN201910889977.6A CN110545143B (en) | 2019-09-19 | 2019-09-19 | Electric control insulation circuit and electric control converter |
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| CN110545143B true CN110545143B (en) | 2021-05-25 |
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| CN109951948A (en) * | 2019-03-21 | 2019-06-28 | 厦门大学 | A kind of plate grade safety Insulation Scheme |
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| US9453859B2 (en) * | 2013-11-07 | 2016-09-27 | Infineon Technologies Americas Corp. | Voltage converter with VCC-Less RDSon current sensing circuit |
| WO2017079306A1 (en) * | 2015-11-04 | 2017-05-11 | Cooper Technologies Company | Shared power for power distribution modules |
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| CN102082514A (en) * | 2009-11-27 | 2011-06-01 | 南京理工大学 | Multi-mode combined AC-AC (alternating current-alternating current) converter based on fly-back converter |
| CN105071643A (en) * | 2015-07-27 | 2015-11-18 | 焦作华飞电子电器股份有限公司 | Wireless power supply method for high-voltage isolated SCR and IGBT driver |
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