CN107276416B - Switching power supply device and system - Google Patents
Switching power supply device and system Download PDFInfo
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- CN107276416B CN107276416B CN201710669955.XA CN201710669955A CN107276416B CN 107276416 B CN107276416 B CN 107276416B CN 201710669955 A CN201710669955 A CN 201710669955A CN 107276416 B CN107276416 B CN 107276416B
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- 238000012545 processing Methods 0.000 claims abstract description 115
- 238000002955 isolation Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 8
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Classifications
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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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
Abstract
The application provides a switching power supply device and a system, which relate to the technical field of power electronics and comprise a power supply processing circuit, an electromagnetic compatibility (Electro Magnetic Compatibility, EMC for short) filter circuit, a control module, an isolation device and an output filter processing circuit; the first control chip and the second control chip in the control module perform data processing according to the line information detected by the detection device at the same time; when the data processing speed of the first control chip is higher than that of the second control chip, the first control chip obtains a first data processing result through data processing, and outputs a first control signal to the control execution circuit according to the first data processing result, so that the technical problem that the power supply mode of the distribution terminal in the prior art is relatively long in time of matching the distribution terminal and the overhead line switch operating mechanism, and isolation control of line faults cannot be completed rapidly in the distribution network automation system is solved.
Description
Technical Field
The application relates to the technical field of power electronics, in particular to a switching power supply device and a switching power supply system.
Background
The high-voltage grid overhead line supplies power to the power distribution terminal by taking alternating current (alternating current, abbreviated as AC) 220V converted by primary power supply voltage transformer (Phase voltage Transformers, abbreviated as PT) equipment as a main power supply, and simultaneously floating charges the standby battery. The power distribution terminal converts the AC220V voltage into Direct Current (DC) 24V required by a power distribution network system, and provides power for the power distribution terminal system, battery management, communication loops and line switch operating mechanisms. The standby battery is a standby power supply, and when the main power supplies at two sides lose power, the standby battery supplies power, so that the power distribution terminal can continuously work for a period of time, and the normal work of the switch operating mechanism and communication in a limited time under the power failure state is ensured. To realize the fast response of distribution network automation, the terminal itself must be started and run quickly. Transformers, various switching devices in high voltage overhead lines are in series relationship. When the line fails, the distribution network system is required to detect the failure, the secondary relay is driven to be powered on, and the sum of the time of the switching-off operation of the switch is less than 120ms. For the terminal, the fault must be isolated in the time, otherwise, the substation itself trips, and distribution network automation fails.
At present, two main modes exist for the power supply of a power distribution terminal, one is a transformer mode, the power supply starting time of the transformer mode can only achieve stable DC24V in 200 milliseconds, and the requirement of the power supply in a power grid power distribution automation system cannot be met; the other is a switching power supply mode, and a common power supply is adopted, wherein the cold start time of the common power supply to the power supply is between 1 and 2 seconds, which is far lower than the requirement of the power supply in the power distribution automation system of the power grid.
Therefore, in the current power supply mode of the power distribution terminal, the time of matching the power distribution terminal with the overhead line switch operating mechanism of the distribution network automation system is relatively long, and isolation control of line faults cannot be completed rapidly.
Disclosure of Invention
In view of the above, the present application aims to provide a switching power supply device and a system, so as to solve the technical problem that in the current power supply mode for a distribution terminal in the prior art, the time of matching a distribution terminal with an overhead line switch operating mechanism of a distribution network automation system is relatively long, and isolation control of line faults cannot be completed rapidly.
In a first aspect, an embodiment of the present application provides a switching power supply device, including: the device comprises a power supply processing circuit, an electromagnetic compatibility (Electro Magnetic Compatibility, EMC for short) filter circuit, a control module, an isolation device and an output filter processing circuit;
the EMC filter circuit is respectively connected with the power supply processing circuit and the control module;
the isolation device is respectively connected with the control module and the output filtering processing circuit;
the control module includes: the device comprises a detection device, a first control chip, a second control chip and a control execution circuit;
the first control chip and the second control chip perform data processing according to the line information detected by the detection device at the same time;
when the data processing speed of the first control chip is faster than that of the second control chip, the first control chip obtains a first data processing result through data processing and outputs a first control signal to the control executing circuit according to the first data processing result.
With reference to the first aspect, an embodiment of the present application provides a first possible implementation manner of the first aspect, where the first control chip outputs the first control signal to the control execution circuit and outputs the first data processing result to the second control chip.
With reference to the first aspect, the embodiment of the present application provides a second possible implementation manner of the first aspect, where the second control chip terminates the data processing procedure when receiving the first data processing result.
With reference to the first aspect, an embodiment of the present application provides a third possible implementation manner of the first aspect, where the second control chip obtains a second data processing result through data processing, and checks the first data processing result with the second data processing result to obtain and send a check result.
With reference to the first aspect, an embodiment of the present application provides a fourth possible implementation manner of the first aspect, where when the first control chip fails, the second control chip obtains a second data processing result through data processing, and outputs a second control signal to the control execution circuit according to the second data processing result.
With reference to the first aspect, an embodiment of the present application provides a fifth possible implementation manner of the first aspect, where the second control chip sends failure information of the first control chip when the first control chip fails.
With reference to the first aspect, an embodiment of the present application provides a sixth possible implementation manner of the first aspect, where the detection device includes: at least one of a temperature sensor, a voltage detector, and a current detector.
In a second aspect, an embodiment of the present application further provides a switching power supply system, including: a terminal and a switching power supply device as in the first aspect;
the switching power supply device further comprises a communication device, wherein the communication device is used for sending the first data processing result to the terminal;
the terminal is connected with the switching power supply equipment through wireless communication.
With reference to the second aspect, an embodiment of the present application provides a first possible implementation manner of the second aspect, where a second control chip in the switching power supply device obtains a second data processing result through data processing, and checks the first data processing result with the second data processing result to obtain and send a check result;
and the terminal receives the checking result and determines a fault chip according to the checking result.
With reference to the second aspect, an embodiment of the present application provides a second possible implementation manner of the second aspect, where the second control chip sends failure information of the first control chip when the first control chip fails;
and the terminal receives the fault information and alarms according to the fault information.
The technical scheme provided by the embodiment of the application has the following beneficial effects: in the switching power supply device and the system provided by the embodiment of the application, the switching power supply device comprises a control module, an isolation device, a power supply processing circuit, an EMC filter circuit and an output filter processing circuit, wherein the isolation device is respectively connected with the control module and the output filter processing circuit, and the EMC filter circuit is respectively connected with the power supply processing circuit and the control module, and the control module comprises: the system comprises a detection device, a first control chip, a second control chip and a control execution circuit, wherein the first control chip and the second control chip perform data processing according to line information detected by the detection device, when the first control chip is faster than the second control chip in data processing speed, the first control chip obtains a first data processing result through data processing, outputs a first control signal to the control execution circuit according to the first data processing result, performs data processing according to the line information detected by the detection device through the first control chip and the second control chip, performs simultaneous operation mode of data processing according to the line information detected by the detection device, performs isolation and other control according to the fastest obtained data processing result, and achieves improvement of line control speed, so that the technical problem that in the current power supply mode of a distribution network automatic system in the prior art, the time for matching a distribution terminal and an overhead line switch operating mechanism is relatively long, and isolation control of line faults cannot be completed rapidly is solved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a switching power supply device according to an embodiment of the present application;
fig. 2 is a schematic diagram showing a specific structure of a control module in the switching power supply device according to the embodiment of the present application;
fig. 3 is a schematic diagram showing a specific structure of an isolation device in the switching power supply device according to the embodiment of the present application;
fig. 4 is a schematic structural diagram of a switching power supply system according to an embodiment of the present application.
Icon: 1-a switching power supply device; 11-a power supply processing circuit; 12-EMC filter circuit; 13-a control module; 14-isolating means; 15-outputting a filter processing circuit; 16-communication means; 131-detecting means; 132-a first control chip; 133-a second control chip; 134-control execution circuitry; 141-an isolation transformer; 142-a photo coupler; 2-a switching power supply system; 21-terminal.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the current power supply mode of the power distribution terminal, the time of the power distribution network automation system matched with the power distribution terminal and the overhead line switch operating mechanism is relatively long, and isolation control of line faults cannot be completed rapidly.
For the convenience of understanding the present embodiment, a switching power supply device and a system disclosed in the embodiments of the present application will be described in detail.
Embodiment one:
the switch power supply equipment provided by the embodiment of the application can be a power supply system of a power distribution automation terminal and can be used in a power distribution intelligent power grid system. As shown in fig. 1, the switching power supply device 1 may include: the power supply processing circuit 11, the EMC filter circuit 12, the control module 13, the isolation device 14 and the output filter processing circuit 15. The power supply processing circuit 11, the EMC filter circuit 12, the isolation device 14, the output filter processing circuit 15, and the like may also be provided inside the switching power supply apparatus 1.
Specifically, the EMC filter circuit is connected to the power supply processing circuit 11 and the control module 13, and the isolation device 14 is connected to the control module 13 and the output filter processing circuit 15, respectively. The ac input end of the switching power supply device 1 may be connected to a common end, a neutral line and a live line, and the dc output end of the switching power supply device 1 may output 24V dc.
The power supply processing circuit 11, the EMC filter circuit 12, the control module 13, the isolation device 14 and the output filter processing circuit 15 change the power grid alternating current power supply into smoother direct current, so that alternating current is input and direct current is output.
As a preferred implementation of the present embodiment, the control module 13 may be a control unit. The control module 13 includes: the detection device 131, the first control chip 132, the second control chip 133 and the control execution circuit 134. The first control chip 132 and the second control chip 133 perform data processing according to the line information detected by the detecting device 131 at the same time. In addition, the detection device 131 may be installed outside the control module 13, and the first control chip 132, the second control chip 133, and the control execution circuit 134 may be installed inside the control module 13.
Further, when the data processing speed of the first control chip 132 is faster than that of the second control chip 133, the first control chip 132 obtains a first data processing result through data processing, and outputs a first control signal to the control execution circuit according to the first data processing result. Similarly, when the second control chip 133 processes data faster than the first control chip 132, the second control chip 133 obtains a second data processing result through data processing, and outputs a second control signal to the control execution circuit according to the second data processing result.
Therefore, the dual chips are operated simultaneously, and the data processing result of the chip with higher operation speed is finally adopted, so that the speed of operation control according to the detection condition is improved.
As shown in fig. 2, the first control chip 132 may be connected to the second control chip 133. The control chip with high data processing running speed outputs a control signal to the control execution circuit and simultaneously outputs a data processing result with high obtaining speed to the other control chip. For example, if the first control chip 132 performs data processing faster than the second control chip 133, the first control chip 132 outputs the first control signal to the control execution circuit and simultaneously outputs the first data processing result to the second control chip 133.
In one implementation, the second control chip 133 terminates the data processing process upon receiving the first data processing result, enabling a reduction in energy consumed for operation, thereby enabling energy savings.
In another implementation, the second control chip 133 obtains a second data processing result through data processing, checks the first data processing result with the second data processing result, obtains and transmits a check result, and may transmit the check result to the terminal.
Preferably, when the first control chip 133 fails, the second control chip 133 obtains a second data processing result through data processing, and outputs a second control signal to the control execution circuit according to the second data processing result.
Similarly, when the second control chip 133 fails, the first control chip 132 obtains a first data processing result through data processing, and outputs a first control signal to the control execution circuit according to the first data processing result, thereby realizing the technical effect of dual-chip redundancy.
As a preferred embodiment, the second control chip 133 transmits the failure information of the first control chip 132 when the first control chip 132 fails. Similarly, the first control chip 132 transmits failure information of the second control chip 133 when the second control chip 133 fails. Preferably, the fault information of the control chip may be transmitted to the terminal.
The detecting device 131 includes: at least one of a temperature sensor, a voltage detector, and a current detector. The detection device 131 may also provide various parameters and various meter data in the protection circuit that are in operation. And the control execution circuit can realize control and modulation in the aspects of quick start, wide-voltage input and the like. Therefore, the control module 13 may implement overvoltage protection, overheat protection, short-circuit protection, undervoltage protection, overcurrent protection, and the like through the detection device 131, a control execution circuit, a control chip, and the like. For example, the derated output of the power supply at too high a ring temperature may be controlled based on the operating ambient temperature of the power supply.
As another implementation manner of this embodiment, for the control module 13, sampling may be performed from the output end and the input end, comparing with the set value, and then controlling the inverter according to the comparison result, and changing the pulse width or pulse frequency thereof to stabilize the output. The control module 13 may also provide various protection measures for the power supply by controlling the execution circuit according to the data provided by the detection device 131 and identified by the protection circuit. Preferably, the control circuit may control the operation state of the main circuit according to the input and output conditions.
Further, the power supply processing circuit 11 in the switching power supply apparatus 1 may be used to convert alternating current into direct current. The EMC filter circuit can filter clutter existing in the power grid and prevent the clutter generated by the machine from being fed back to the power grid, and the EMC filter circuit or the EMC filter is arranged on the alternating current input side, so that the EMC electromagnetic compatibility problem can be solved.
In addition, the EMC filter can be used in instruments and meters and an automatic control system, and is used for inhibiting and eliminating strong electromagnetic interference and electric spark interference on the site of an industrial automatic system, and the instruments and meters on the site are surveyed, so that the safe and reliable operation of the automatic control system is ensured. The EMC filter can be connected in series with the power supply inlet end of the field instrument and meter and the automation control equipment and is used for eliminating the interference on the power supply generated during the starting, braking and running of various large-scale inductive equipment such as fans, water pumps, compressors, motors, water turbines, generators, vortex machines and the like. The EMC filter can also be connected in series with the control output end of a relay of an instrument and an automatic control device, and is used for eliminating electromagnetic interference and spark interference generated during the on and off of various inductive loads such as a rear-stage contactor, an electromagnetic valve, a fan, a water pump and the like.
As shown in fig. 3, the isolation device 14 may include an isolation transformer 141 and a photo coupler 142. The isolation transformer 141 and the optocoupler 142 can couple signals and play a role of electrical isolation. The part connected with the isolating device 14 such as a transformer can be a power output part, and output rectification and filtering are realized to provide a stable and reliable direct current power supply according to the load requirement.
The switching power supply device 1 provided by the embodiment of the application can be a novel special switching power supply for distribution network automation, the cold start time of the power supply can be only more than 40ms, and the distribution network automation system can be matched with a distribution terminal and an overhead line switch operating mechanism in a short time to complete the isolation of line faults. The distribution automation system is an automation system for realizing operation monitoring and control of a distribution power grid, has the functions of distribution SCADA, feeder automation, power grid analysis application, interconnection of related application systems and the like, and the distribution terminal is an important component of the automation system and is an automation device arranged on the operation site of primary equipment, and the distribution automation system mainly has the functions of collecting and controlling operation information of a power grid switch, detecting faults, recording events, synchronizing time, remotely maintaining self-diagnosis, storing data, communicating and the like. In the distribution network automation system, the main equipment for realizing distribution network automation comprises: high voltage switch, high voltage PT, power distribution terminal, communication module etc..
Moreover, the switching power supply device 1 provided by the application has wide input voltage range, stable output voltage, no influence of line voltage fluctuation, and protection functions on overvoltage, undervoltage, overcurrent, overheat, short circuit and the like.
As a preferred implementation of the present embodiment, the switching power supply device 1 may be in a mode of an integrated module, and may be small in size compared to a general switch, and the size of the switching power supply device 1 may be greatly reduced.
Embodiment two:
as shown in fig. 4, a switching power supply system 2 provided in an embodiment of the present application includes: the terminal 21 and the switching power supply device provided in the first embodiment described above.
In practical applications, the switching power supply device 1 may further include a communication device 16 for sending the first data processing result and the first data processing result to the terminal 21. The terminal and the switching power supply device 1 may be connected by wireless communication.
In this embodiment, the second control chip 133 in the switching power supply apparatus 1 may obtain the second data processing result through data processing, and check the first data processing result with the second data processing result, obtain and send the check result. The terminal may receive the collation result and determine a faulty chip according to the collation result.
Further, the second control chip 133 may transmit failure information of the first control chip 132 when the first control chip 132 fails. The terminal may receive the fault information and alert based on the fault information.
As another implementation manner of this embodiment, the first control chip 132 and the second control chip 133 may be in the form of processors, and as the first processor and the second processor, operations of data processing are performed according to the data detected by the detecting device 131.
The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the above functions may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a digital signal processor (Digital Signal Processing, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The functions disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The functions disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the combined execution of hardware and software modules in a decoding processor.
The switching power supply system provided by the embodiment of the application has the same technical characteristics as the switching power supply equipment provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
In addition, in the description of embodiments of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A switching power supply apparatus, characterized by comprising: the device comprises a power supply processing circuit, an EMC filter circuit, a control module, an isolation device and an output filter processing circuit;
the EMC filter circuit is respectively connected with the power supply processing circuit and the control module;
the isolation device is respectively connected with the control module and the output filter processing circuit;
the alternating current input end of the switching power supply device is connected with the public end, the zero line and the live wire, and the direct current output end of the switching power supply device outputs direct current;
the control module includes: the device comprises a detection device, a first control chip, a second control chip and a control execution circuit;
the first control chip and the second control chip perform data processing according to the line information detected by the detection device at the same time;
when the data processing speed of the first control chip is higher than that of the second control chip, the first control chip obtains a first data processing result through data processing and outputs a first control signal to the control execution circuit according to the first data processing result;
the detection device is arranged outside the control module, and the first control chip, the second control chip and the control execution circuit are arranged inside the control module.
2. The switching power supply device according to claim 1, wherein the first control chip outputs the first control signal to the control execution circuit and outputs the first data processing result to the second control chip.
3. The switching power supply device according to claim 2, wherein the second control chip terminates the data processing process upon receiving the first data processing result.
4. The switching power supply device according to claim 2, wherein the second control chip obtains a second data processing result through data processing, and checks the first data processing result with the second data processing result, obtains and transmits a check result.
5. The switching power supply device according to claim 1, wherein the second control chip obtains a second data processing result through data processing when the first control chip fails, and outputs a second control signal to the control execution circuit according to the second data processing result.
6. The switching power supply device according to claim 1, wherein the second control chip transmits failure information of the first control chip when the first control chip fails.
7. The switching power supply device according to claim 1, wherein the detecting means includes: at least one of a temperature sensor, a voltage detector, and a current detector.
8. A switching power supply system, comprising: a terminal and a switching power supply device as claimed in any one of claims 1 to 7;
the switching power supply device further comprises a communication device, wherein the communication device is used for sending the first data processing result to the terminal;
the terminal is connected with the switching power supply equipment through wireless communication.
9. The switching power supply system according to claim 8, wherein a second control chip in the switching power supply device obtains a second data processing result through data processing, and checks the first data processing result with the second data processing result to obtain and send a check result;
and the terminal receives the checking result and determines a fault chip according to the checking result.
10. The switching power supply system according to claim 8, wherein the second control chip transmits failure information of the first control chip when the first control chip fails;
and the terminal receives the fault information and alarms according to the fault information.
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| CN108306254A (en) * | 2018-04-09 | 2018-07-20 | 广州金升阳科技有限公司 | A kind of isolation protective circuit and the Switching Power Supply comprising the circuit |
| CN112051513B (en) * | 2020-09-10 | 2023-09-19 | 中车大连电力牵引研发中心有限公司 | Power panel state detection circuit |
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