CN202050357U - Protection module for switching power supply of direct current screen - Google Patents
Protection module for switching power supply of direct current screen Download PDFInfo
- Publication number
- CN202050357U CN202050357U CN2011201176864U CN201120117686U CN202050357U CN 202050357 U CN202050357 U CN 202050357U CN 2011201176864 U CN2011201176864 U CN 2011201176864U CN 201120117686 U CN201120117686 U CN 201120117686U CN 202050357 U CN202050357 U CN 202050357U
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- power supply
- direct current
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Abstract
Disclosed is a protection module for switching power supply of direct current screen. An AC power supply enters into an input protection circuit, the output end of the input protection circuit is sequentially connected to a bridge type rectification circuit, a passive power factor correction circuit, a filter circuit, a DC-DC conversion circuit, a smoothed filter circuit and an output protection circuit, the output end of the smoothed filter circuit is connected with an overvoltage overcurrent short circuit protection circuit, the overvoltage overcurrent short circuit protection circuit is connected to a microprocessor, the microprocessor is connected to a resonance voltage type double ring control circuit, and the output end of the resonance voltage type double ring control circuit is connected to the DC-DC conversion circuit. Since the overvoltage overcurrent protection circuit is added on the AC input side in the module, when an external AC voltage is over high, the module automatically enters into a self-protection state, starts up after 1.5 minutes and restores operating, thus fully protecting the safe operation of the protection module, decreasing faults caused by AC voltage, and making the severe operation environment resistance of the equipment stronger.
Description
Technical field
The utility model relates to the power protection module of a kind of electric power with direct current cabinet.
Background technology
At present, the AC-input voltage fluctuation is frequent or AC-input voltage is instantaneous too high, the easy puncture short of inside modules power device; The module isolated operation can be not all, the floating charge conversion.
Summary of the invention
The purpose of this utility model provides a kind of protection module that can ensure direct current cabinet Switching Power Supply safety.
For achieving the above object, the utility model is by the following technical solutions:
In the utility model; AC power enters input protection circuit; the output of input protection circuit connects bridge rectifier, passive power factor correcting circuit, filter circuit, DC-DC translation circuit, smoothed filter circuit and output protection circuit successively; it is characterized in that: the output at described smoothed filter circuit connects the over-voltage and over-current short-circuit protection circuit; the over-voltage and over-current short-circuit protection circuit connects microprocessor; microprocessor is connected with resonance potential type dicyclo control loop, and the output of resonance potential type dicyclo control loop connects the DC-DC translation circuit.
Input at described microprocessor and resonance voltage-type dicyclo control loop also is connected with thermal-shutdown circuit.
Input at described resonance potential type dicyclo control loop also is connected with feedback sampling circuit, and feedback sampling circuit connects equalizing control circuit.
On the interface circuit of described microprocessor, connect charactron display circuit and button.
Adopt the utility model of technique scheme; exchange input side in inside modules and installed overvoltage oversampling circuit protective circuit additional; when the external communication overtension; module enters the discretionary protection state automatically; a half starts automatically, resumes operation, and module safe operation like this can adequately protect; the fault that reduction equipment causes because of alternating voltage, thus make the anti-abominable running environment of equipment stronger.In addition, install microprocessor additional in inside modules, each module all can be carried out intelligent management to battery by autonomous operation, has increased client's range of choice greatly, satisfies the instructions for use of different user from price, function.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Embodiment
As shown in Figure 1; in the utility model; AC power enters input protection circuit, and the output of input protection circuit connects bridge rectifier, passive power factor correcting circuit, filter circuit, DC-DC translation circuit, smoothed filter circuit and output protection circuit successively.
For guaranteeing the fail safe of Switching Power Supply; output at smoothed filter circuit connects the over-voltage and over-current short-circuit protection circuit; the over-voltage and over-current short-circuit protection circuit connects microprocessor; microprocessor is connected with resonance potential type dicyclo control loop, and the output of resonance potential type dicyclo control loop connects the DC-DC translation circuit.
In addition, the utility model also is provided with temperature protection: promptly the input at microprocessor and resonance voltage-type dicyclo control loop also is connected with thermal-shutdown circuit.
Input at resonance potential type dicyclo control loop also is connected with feedback sampling circuit, and feedback sampling circuit connects equalizing control circuit.
On the interface circuit of microprocessor, connect charactron display circuit and button.
Claims (4)
1. direct current cabinet Switching Power Supply protection module; AC power enters input protection circuit; the output of input protection circuit connects bridge rectifier successively; passive power factor correcting circuit; filter circuit; the DC-DC translation circuit; smoothed filter circuit and output protection circuit; it is characterized in that: the output at described smoothed filter circuit connects the over-voltage and over-current short-circuit protection circuit; the over-voltage and over-current short-circuit protection circuit connects microprocessor; microprocessor is connected with resonance potential type dicyclo control loop, and the output of resonance potential type dicyclo control loop connects the DC-DC translation circuit.
2. direct current cabinet Switching Power Supply protection module according to claim 1 is characterized in that: the input at described microprocessor and resonance voltage-type dicyclo control loop also is connected with thermal-shutdown circuit.
3. direct current cabinet Switching Power Supply protection module according to claim 2 is characterized in that: the input at described resonance potential type dicyclo control loop also is connected with feedback sampling circuit, and feedback sampling circuit connects equalizing control circuit.
4. direct current cabinet Switching Power Supply protection module according to claim 3 is characterized in that: connect charactron display circuit and button on the interface circuit of described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201176864U CN202050357U (en) | 2011-04-20 | 2011-04-20 | Protection module for switching power supply of direct current screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201176864U CN202050357U (en) | 2011-04-20 | 2011-04-20 | Protection module for switching power supply of direct current screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202050357U true CN202050357U (en) | 2011-11-23 |
Family
ID=44990648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201176864U Expired - Fee Related CN202050357U (en) | 2011-04-20 | 2011-04-20 | Protection module for switching power supply of direct current screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202050357U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496993A (en) * | 2011-12-01 | 2012-06-13 | 江苏银佳企业集团有限公司 | Quick charging machine |
| CN102570797A (en) * | 2012-02-17 | 2012-07-11 | 易程（苏州）智能系统有限公司 | Power supply device for video system on high-speed train |
| CN104377953A (en) * | 2014-10-29 | 2015-02-25 | 中国石油化工股份有限公司 | DC screen power supply with high-power DC converter |
| CN105633943A (en) * | 2016-04-01 | 2016-06-01 | 上海圣速电子科技股份有限公司 | Block-building switch power supply system |
| CN108631378A (en) * | 2017-03-23 | 2018-10-09 | 义乌正隆新能源科技有限公司 | charger for lithium battery |
| CN113595417A (en) * | 2021-07-29 | 2021-11-02 | 广东电网有限责任公司 | Electric power direct current power supply device modularization system |
-
2011
- 2011-04-20 CN CN2011201176864U patent/CN202050357U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496993A (en) * | 2011-12-01 | 2012-06-13 | 江苏银佳企业集团有限公司 | Quick charging machine |
| CN102570797A (en) * | 2012-02-17 | 2012-07-11 | 易程（苏州）智能系统有限公司 | Power supply device for video system on high-speed train |
| CN104377953A (en) * | 2014-10-29 | 2015-02-25 | 中国石油化工股份有限公司 | DC screen power supply with high-power DC converter |
| CN105633943A (en) * | 2016-04-01 | 2016-06-01 | 上海圣速电子科技股份有限公司 | Block-building switch power supply system |
| CN105633943B (en) * | 2016-04-01 | 2019-05-24 | 上海圣速电子科技股份有限公司 | Building block system switch power supply system |
| CN108631378A (en) * | 2017-03-23 | 2018-10-09 | 义乌正隆新能源科技有限公司 | charger for lithium battery |
| CN113595417A (en) * | 2021-07-29 | 2021-11-02 | 广东电网有限责任公司 | Electric power direct current power supply device modularization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20130420 |