CN204809973U - Two power supply switching circuit - Google Patents
Two power supply switching circuit Download PDFInfo
- Publication number
- CN204809973U CN204809973U CN201520520394.3U CN201520520394U CN204809973U CN 204809973 U CN204809973 U CN 204809973U CN 201520520394 U CN201520520394 U CN 201520520394U CN 204809973 U CN204809973 U CN 204809973U
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- CN
- China
- Prior art keywords
- bidirectional thyristor
- switch element
- relay switch
- input
- live wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a two power supply switching circuit, including power input unit, a relay switch and the 2nd relay switch, a firewire input port and the 2nd firewire input port are connected through first bidirectional thyristor switch element and the second bidirectional thyristor switch element firewire input port with EMC circuit unit respectively, first zero line input and second zero line input are connected with EMC circuit unit's zero line input through third bidirectional thyristor switch element and fourth bidirectional thyristor switch element respectively, a firewire input port is connected through a relay switch to the control electrode of first bidirectional thyristor switch element and third bidirectional thyristor switch element, the 2nd firewire input port is connected through the 2nd relay switch to the control electrode of second bidirectional thyristor switch element and fourth bidirectional thyristor switch element. The utility model discloses relay switch only is arranged in controlling each bidirectional thyristor switch element bidirectional thyristor and switches on, and relay switch's contact is difficult to strike sparks at the switching in -process.
Description
Technical field
The utility model relates to a kind of power circuit, especially a kind of dual power supply switching circuit.
Background technology
Existing dual power supply switching circuit comprises power input unit, connect the diverter switch of power input unit, power input unit comprises the first power input, second source input and earth terminal, first power input comprises the first live wire input and the first zero line input, second source input comprises the second live wire input and the second zero line input, diverter switch is specially two relay switches, relay switch is connected to EMC circuit unit, EMC circuit unit connects output, output is for connecting load, duplicate supply carries out electrical source exchange by two relay switches, this dual power supply switching circuit, if late-class circuit power is large, relay contact is easily struck sparks in handoff procedure, easy initiation security incident.
In order to solve above Problems existing, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thus provides a kind of dual power supply switching circuit.
To achieve these goals, the technical scheme that the utility model adopts is: dual power supply switching circuit, comprise power input unit, first relay switch and the second relay switch, first live wire input is connected with the live wire input of EMC circuit unit with the second bidirectional thyristor switch element respectively by the first bidirectional thyristor switch element with the second live wire input, first zero line input is connected with the zero line input of the 4th bidirectional thyristor switch element with described EMC circuit unit respectively by the 3rd bidirectional thyristor switch element with the second zero line input, the control pole of described first bidirectional thyristor switch element connects the first live wire input by the first relay switch, the control pole of the 3rd bidirectional thyristor switch element connects described first live wire input by described first relay switch, the control pole of described second bidirectional thyristor switch element connects the second live wire input by the second relay switch, the control pole of described 4th bidirectional thyristor switch element connects the second live wire input by the second relay switch, one end of the control coil of described first relay switch connects described first zero line input and the other end connects described first live wire input by described second relay switch, one end of the control coil of described second relay switch connects described second zero line input and the other end connects described second live wire input by described first relay switch.
The utility model hinge structure has substantive distinguishing features and progress, specifically, dual power supply switching circuit, the first live wire input in power input unit is connected with EMC circuit unit with the 3rd bidirectional thyristor switch element respectively by the first bidirectional thyristor switch element with the first zero line input, and the first bidirectional thyristor switch element is connected the first live wire input with the control pole of the 3rd bidirectional thyristor switch element by the first relay switch; Second live wire input is connected with EMC circuit unit with the 4th bidirectional thyristor switch element respectively by the second bidirectional thyristor switch element with the second zero line input, and the second bidirectional thyristor switch element is connected the second live wire input with the control pole of the 4th bidirectional thyristor switch element by the second relay switch.Such duplicate supply is connected by each bidirectional thyristor switch element with EMC circuit, relay switch is only for controlling bidirectional thyristor conducting in each bidirectional thyristor switch element, no matter late-class circuit watt level, the contact of relay switch is all not easy sparking in handoff procedure, has stopped the accidents caused potential safety hazard because of contact sparking.Meanwhile, two relay switches control the break-make of the other side's control coil mutually, and when a control coil conducting time, this relay switch disconnects the control coil of another relay switch, ensure that a power supply in duplicate supply is load supplying, very easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the dual power supply switching circuit in the utility model embodiment.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
The embodiment of dual power supply switching circuit, as shown in Figure 1, comprises power input unit CN1, the first relay switch M1 and the second relay switch M2, and the first live wire input L1 and the second live wire input L2 is respectively by by bidirectional thyristor SC1, resistance R
1and resistance R
2composition the first bidirectional thyristor switch element and by bidirectional thyristor SC2, resistance R
3and resistance R
4second bidirectional thyristor switch element of composition is connected with the live wire input L3 of EMC circuit unit, and the first zero line input N1 and the second zero line input N2 is respectively by by bidirectional thyristor SC3, resistance R
5and resistance R
6composition the 3rd bidirectional thyristor switch element and by bidirectional thyristor SC4, resistance R
7and resistance R
84th bidirectional thyristor switch element of composition is connected with the zero line input N3 of EMC circuit unit, the control pole of the first bidirectional thyristor switch element connects the first live wire input L1 by the first relay switch M1, the control pole of the 3rd bidirectional thyristor switch element connects the first live wire input L1 by the first relay switch M1, the control pole of the second bidirectional thyristor switch element connects the second live wire input L2 by the second relay switch M2, the control pole of the 4th bidirectional thyristor switch element connects the second live wire input L2 by the second relay switch M2, one end of the control coil of the first relay switch M1 connects the first zero line input N1 and the other end connects the first live wire input L1 by the second relay switch M2, one end of the control coil of the second relay switch M2 connects the second zero line input N2 and the other end connects the second live wire input L2 by the first relay switch M1.
The dual power supply switching circuit of the present embodiment, the first live wire input in power input unit is connected with EMC circuit unit with the 3rd bidirectional thyristor switch element respectively by the first bidirectional thyristor switch element with the first zero line input, and the first bidirectional thyristor switch element is connected the first live wire input with the control pole of the 3rd bidirectional thyristor switch element by the first relay switch; Second live wire input is connected with EMC circuit unit with the 4th bidirectional thyristor switch element respectively by the second bidirectional thyristor switch element with the second zero line input, and the second bidirectional thyristor switch element is connected the second live wire input with the control pole of the 4th bidirectional thyristor switch element by the second relay switch.Such duplicate supply is connected by each bidirectional thyristor switch element with EMC circuit, relay switch is only for controlling bidirectional thyristor conducting in each bidirectional thyristor switch element, no matter late-class circuit watt level, the contact of relay switch is all not easy sparking in handoff procedure, has stopped the accidents caused potential safety hazard because of contact sparking.Meanwhile, two relay switches control the break-make of the other side's control coil mutually, and when a control coil conducting time, this relay switch disconnects the control coil of another relay switch, ensure that a power supply in duplicate supply is load supplying, very easy to use.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (1)
1. dual power supply switching circuit, comprise power input unit, first relay switch and the second relay switch, it is characterized in that: the first live wire input is connected with the live wire input of EMC circuit unit with the second bidirectional thyristor switch element respectively by the first bidirectional thyristor switch element with the second live wire input, first zero line input is connected with the zero line input of the 4th bidirectional thyristor switch element with described EMC circuit unit respectively by the 3rd bidirectional thyristor switch element with the second zero line input, the control pole of described first bidirectional thyristor switch element connects the first live wire input by the first relay switch, the control pole of the 3rd bidirectional thyristor switch element connects described first live wire input by described first relay switch, the control pole of described second bidirectional thyristor switch element connects the second live wire input by the second relay switch, the control pole of described 4th bidirectional thyristor switch element connects the second live wire input by the second relay switch, one end of the control coil of described first relay switch connects described first zero line input and the other end connects described first live wire input by described second relay switch, one end of the control coil of described second relay switch connects described second zero line input and the other end connects described second live wire input by described first relay switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520394.3U CN204809973U (en) | 2015-07-17 | 2015-07-17 | Two power supply switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520394.3U CN204809973U (en) | 2015-07-17 | 2015-07-17 | Two power supply switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204809973U true CN204809973U (en) | 2015-11-25 |
Family
ID=54594734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520520394.3U Expired - Fee Related CN204809973U (en) | 2015-07-17 | 2015-07-17 | Two power supply switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204809973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811571A (en) * | 2016-03-22 | 2016-07-27 | 珠海博威智能电网有限公司 | Intelligent switching dual-power-supply apparatus and operating method therefor |
-
2015
- 2015-07-17 CN CN201520520394.3U patent/CN204809973U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811571A (en) * | 2016-03-22 | 2016-07-27 | 珠海博威智能电网有限公司 | Intelligent switching dual-power-supply apparatus and operating method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Nanzhao County of Nanyang City, the 474650 industrial agglomeration in Henan Province District Yingbin Avenue Patentee after: HENAN ZHONGYUNCHUANG OPTOELECTRONIC TECHNOLOGY CO., LTD. Address before: Industry in Biyang County of Zhumadian City, Henan province 463700 area Henan zhongyun a photoelectric Polytron Technologies Inc Patentee before: HENAN ZHONGYUNCHUANG OPTOELECTRONIC TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190710 Address after: 450000 Henan Zhengzhou City Henan Free Trade Experimental Zone Zhengzhou District (Zhengdong) Shangding Road, No. 78, Unit 23, 2312 Patentee after: Henan Puzhao Photoelectric Technology Co., Ltd. Address before: 474650 Yingbin Avenue, Nanzhao County Industrial Agglomeration Area, Nanyang City, Henan Province Patentee before: HENAN ZHONGYUNCHUANG OPTOELECTRONIC TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20190717 |