CN203840194U - Power supply device having overvoltage protection function - Google Patents
Power supply device having overvoltage protection function Download PDFInfo
- Publication number
- CN203840194U CN203840194U CN201420144188.2U CN201420144188U CN203840194U CN 203840194 U CN203840194 U CN 203840194U CN 201420144188 U CN201420144188 U CN 201420144188U CN 203840194 U CN203840194 U CN 203840194U
- Authority
- CN
- China
- Prior art keywords
- power
- output
- electrically connected
- power supply
- comparator
- 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 - Lifetime
Links
- 238000006243 chemical reaction Methods 0.000 claims description 32
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Control Of Voltage And Current In General (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a power supply device having an overvoltage protection function comprising a power supply unit, a first switch element, a compensation unit, a controller, and an overvoltage protection unit. The power supply unit comprises a main power supply output end and a standby power supply output end. The power supply unit comprises a DC/DC power supply converter and a first induction resistor. The DC/DC power supply converter is provided with a power supply output end, and the first induction resistor is electrically connected with a power supply output end and the main power supply output end. The first switch element is electrically connected with the first induction resistor and the main power supply output end, and the compensation unit is electrically connected with the main power supply output end. The controller is electrically connected with the compensation unit and the power supply unit. The overvoltage protection unit is electrically connected with the main power supply output end, the first switch element, the standby power supply output end, the power supply output end, and the compensation unit.
Description
Technical field
The utility model relates to a kind of power supply device excessively, and is particularly related to a kind of power supply device with over-voltage protection function.
Background technology
Coordinating and consult Fig. 1, is the existing power supply device with overvoltage protection.The described power supply device 1 with overvoltage protection comprises a power conversion unit 10, a controller 12, a compensating unit 14, one first switch element 16, an overvoltage protective unit 18 and a second switch element 20.
Power conversion unit 10 comprises a main power source output VA and a standby power output VB, main power source output VA and standby power output VB give a power conversion system (not shown) in order to output power respectively, the electric power so that power conversion system operation to be provided.Wherein, when power conversion system operates in standby mode, only there is standby power output VB input electric power to power conversion system; And when power conversion system operates in non-standby mode, main power source output VA and standby power output VB difference output power are to power conversion system.Profess it, power-supply unit 10 is whether to operate in holding state according to power system, to determine only there is standby power output VB output power, or standby power output VB and main power source output VA while output power, use the effect that reaches energy-conservation.
Power conversion unit 10 comprises one direct current/DC power converter 100, an adjuster 102, one first sense resistor Rs1 and one second sense resistor Rs2.DC-DC power supply changeover device 100 has a power output end Vo.One first sense resistor Rs1, between power output end Vo and main power source output VA, and is electrically connected on power output end Vo and main power source output VA.Adjuster 102 is electrically connected on power output end Vo, and the second sense resistor Rs2, between adjuster 102 and standby power output VB, and is electrically connected on adjuster 102 and standby power output VB.
Controller 12 is electrically connected on the DC-DC power supply changeover device 100 of power conversion unit 10, in order to control the power supply transition status of DC-DC power supply changeover device 100, uses the magnitude of voltage of adjusting by the electric power of DC-DC power supply changeover device 100 outputs.
Compensating unit 14 is electrically connected on main power source output VA and controller 12.Compensating unit 14 comprises a resistor network 140 and an isolator 142, and resistor network 140 is electrically connected on main power source output VA.Isolator 142 comprises a signal transmitting terminal 1420 and a signal receiving end 1422, and signal transmitting terminal 1420 is electrically connected on resistor network 140, and signal receiving end 1422 is electrically connected on controller 12.Controller 12 is that the signal that transmits of the signal receiving end 1422 according to isolator 142 is to adjust the power supply transition status of DC-DC power supply unit 100.
The first switch element 16, between main power source output VA and the first sense resistor Rs1, and forms and to be connected in series with main power source output VA, the first sense resistor Rs1.
Overvoltage protective unit 18 comprises one first comparator 180 and one second comparator 182.The first comparator 180 comprises two inputs and an output, an input of the first comparator 180 is electrically connected on main power source output VA, another input of the first comparator 182 is electrically connected on the first switch element 16 for the output of input one first reference voltage Vref 1, the first comparator 180.The electric power that the first comparator 180 is exported according to main power source output VA and the difference of the first reference voltage Vref 1, to control the on off state of the first switch element 16, are used and are determined whether the electric power of DC-DC power supply changeover device 100 outputs is passed to power conversion system by main power source output VA.The second comparator 182 comprises two inputs and an output, an input of the second comparator 182 is electrically connected on standby power output VB, another input of the second comparator 182 is for input one second reference voltage Vref 2, the second comparator 182 is by magnitude of voltage and second reference voltage Vref 2 of relatively standby power output VB output, and the electric power of adjustment standby power output VB output.
Second switch element 20 is electrically connected between main power source output VA and compensating unit 14.
When the overvoltage protection test of carrying out power supply device 1; second switch element 20 is open-circuit conditions; compensating unit 14 cannot feed back to controller 12 by the electric power of main power source output VA output; to make the electric power of main power source output VA output constantly increase, the electric power of standby power output VB output also can constantly rise simultaneously.
The main power source output VA of one input input of the first comparator 180 of voltage protection unit 18 is during higher than the first reference voltage Vref 1; the output of the first comparator 180 can be sent a signal so that the first switch element 16 is opened, and avoids main power source output VA output power to power conversion system.And when the electric power of power output end Vo output is during higher than a predetermined value, DC-DC power supply changeover device 100 stops power supply conversion, even also power supply device 1 stop supplies electric power, power conversion system also cannot operate thus.
Utility model content
In view of the problem of above-mentioned prior art, the purpose of this utility model is to provide a kind of power supply device with overvoltage protection.
For reaching above-mentioned purpose, the utility model provides a kind of power supply device with overvoltage protection, is electrically connected on a power conversion system, and wherein, this power supply device with overvoltage protection comprises:
One power-supply unit, comprises a main power source output and a standby power output, and this main power source output and this standby power output are electrically connected on this power conversion system, and this power-supply unit comprises:
One direct current/DC power converter, has a power output end;
One first sense resistor, is electrically connected on this power output end and this main power source output; And
One second sense resistor, is electrically connected on this power output end and this standby power output;
One first switch element, is electrically connected on this first sense resistor and this main power source output;
One compensating unit, is electrically connected on this main power source output;
One controller, is electrically connected on this compensating unit and this power-supply unit;
One overvoltage protective unit, comprises:
One first comparator, comprises two inputs and an output, and an input of this first comparator is electrically connected on this main power source output, and this output of this first comparator is electrically connected on this first switch element;
One second comparator, comprises two inputs and an output, and an input of this second comparator is electrically connected on this standby power output; And
One the 3rd comparator, comprises two inputs and an output, and an input of the 3rd comparator is electrically connected on this power output end, and this output of the 3rd comparator is electrically connected on this compensating unit.
The above-mentioned power supply device with overvoltage protection, wherein this power-supply unit more comprises an adjuster, is electrically connected between this power output end and this second sense resistor.
The above-mentioned power supply device with overvoltage protection, wherein this compensating unit comprises a resistor network and an isolated component, and this resistor network is electrically connected on this main power source output, and this isolated component is electrically connected on this resistor network and this controller.
The above-mentioned power supply device with overvoltage protection, wherein this isolated component comprises a signal transmitting terminal and a signal receiving end, and this signal transmitting terminal is electrically connected on this resistor network, and this signal receiving end is electrically connected on this controller.
The above-mentioned power supply device with overvoltage protection, wherein this output of the 3rd comparator is electrically connected on this signal transmitting terminal of this resistor network and this isolated component.
The above-mentioned power supply device with overvoltage protection, wherein this optical isolator is optical coupler.
The above-mentioned power supply device with overvoltage protection, wherein this DC-DC power supply changeover device is LLC power supply changeover device.
The above-mentioned power supply device with overvoltage protection; wherein another input of this first comparator is for input one first reference voltage; another input of this second comparator is for input one second reference voltage, and another input of the 3rd comparator is for input one the 3rd reference voltage.
The above-mentioned power supply device with overvoltage protection, wherein more comprises a second switch element, is electrically connected on this main power source output and this compensating unit.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 illustrates the existing circuit block diagram with the power supply device of overvoltage protection.
Fig. 2 is the circuit block diagram of power supply device of the tool overvoltage protection of this disclosure.
Wherein, Reference numeral
1,3 power supply devices with overvoltage protection
10,30 power conversion units
100,300 DC-DC power supply changeover devices
102,302 adjusters
12,32 controllers
14,34 compensating units
140,340 resistor networks
142,342 isolators
1420,3420 signal transmitting terminals
1422,3422 signal receiving ends
16,36 first switch elements
18,38 overvoltage protective units
180,380 first comparators
182,382 second comparators
20,40 second switch elements
384 the 3rd comparators
Rs1 the first sense resistor
Rs2 the second sense resistor
VA main power source output
VB standby power output
Vref1 the first reference voltage
Vref2 the second reference voltage
Vref3 the 3rd reference voltage
Vo power output end
Embodiment
Please refer to the diagram of enclosing, above and extra object, feature and the advantage of the utility model disclosure is by the following illustrative of the preferred embodiment by this disclosure and non-limitingly describe better and understand in detail.
Coordinating and to consult Fig. 2, is the circuit block diagram of the power supply device of tool overvoltage protection of the present utility model.The power supply device 3 of described tool overvoltage protection comprises a power conversion unit 30, a controller 32, a compensating unit 34, one first switch element 36, an overvoltage protective unit 38 and a second switch element 40.
Power conversion unit 30 comprises a main power source output VA and a standby current output VB, main power source output VA and standby power output VB be output voltage to power conversion system (not shown) respectively, the electric power so that power conversion system operation to be provided.When power conversion system operates in standby mode, only there is standby power output VB input electric power to power conversion system; And when power conversion system operates in non-standby mode, main power source output VA and standby power output VB difference output power are to power conversion system.Profess it, power-supply unit 30 is whether to operate in holding state according to power conversion system, to determine only there is standby power output VB output power, or standby power output VB and main power source output VA while output power, use the effect that reaches energy-conservation.
Power conversion unit 30 comprises one direct current/DC power converter 300, an adjuster 302, one first sense resistor Rs1 and one second sense resistor Rs2.DC-DC power supply changeover device 300 has a power output end Vo.One first sense resistor Rs1, between power output end Vo and main power source output VA, and is electrically connected on power output end Vo and main power source output VA.Adjuster 302 is electrically connected on power output end Vo, and the second sense resistor Rs2, between adjuster 302 and standby power output VB, and is electrically connected on adjuster 302 and standby power output VB.In the present embodiment, DC-DC power supply changeover device 300 can be for example LLC power supply changeover device.
The first switch element 36 is electrically connected between the first sense resistor Rs1 and main power source output VA, in order to determine whether the electric power of power output end Vo output is passed to power conversion system by main power source output VA.
Controller 32 is electrically connected on the DC-DC power supply changeover device 300 of power conversion unit 30, in order to control the power supply transition status of DC-DC power supply changeover device 300, uses the magnitude of voltage of adjusting by the electric power of DC-DC power supply changeover device 300 outputs.In the present embodiment, controller 32 is to control the magnitude of voltage of the electric power of DC-DC power supply changeover device 300 outputs by the frequency of operation of controlling DC-DC power supply changeover device 300.
Compensating unit 34 is electrically connected on main power source output VA and controller 32.Compensating unit 34 comprises a resistor network 340 and an isolator 342, and resistor network 340 is electrically connected on main power source output VA.Isolator 342 comprises a signal transmitting terminal 3420 and a signal receiving end 3422, and signal transmitting terminal 3420 is electrically connected on resistor network 340, and signal receiving end 3422 is electrically connected on controller 32.Controller 32 is that the signal that transmits of the signal receiving end 3422 according to isolator 342 is to adjust the power supply transition status of DC-DC power supply unit 300.In the present embodiment, isolator 342 is to using optical coupler as illustrative example, during actual enforcement not as limit.
Overvoltage protective unit 38 comprises one first comparator 380, one second comparator 382 and one the 3rd comparator 384; the first comparator 380 comprises two inputs and an output; the first 380 1 of comparators input is electrically connected on main power source output VA; another input of the first comparator 380 is electrically connected on the first switch element 36 for input one first reference voltage Vref 1, the first comparator 380 outputs.The first comparator 380 be according to the electric power of main power source output VA output and the difference of the first reference voltage Vref 1 to control the on off state of the first switch element 36, use and determine whether the electric power of DC-DC power supply changeover device 300 outputs is passed to power conversion system by main power source output VA.
The second comparator 382 comprises two inputs and an output, an input of the second comparator 382 is electrically connected on standby power output VB, another input of the second comparator 382 is for input one second reference voltage Vref 2, the second comparator 382 is by magnitude of voltage and second reference voltage Vref 1 of relatively standby power output VB output, and the electric power of adjustment standby power output VB output.
The 3rd comparator 384 comprises two inputs and an output, an input of the 3rd comparator 384 is electrically connected on power output end Vo, the output that another input of the 3rd comparator 384 is electrically connected on one the 3rd reference voltage Vref 3, the three comparators 384 is electrically connected between the signal transmitting terminal 3420 of resistor network 340 and isolator 342.
Second switch element 40 is electrically connected between main power source output VA and compensating unit 34.
When the overvoltage protection test of carrying out power supply device 3, second switch element 40 is open-circuit conditions, and the electric power of power output end Vo output can rise, and makes the electric power of main power source output VA and standby power output VB output increase.
When the electric power of power output end Vo output is greater than the 3rd reference voltage Vref 3, the 3rd comparator 384 is to send a signal, and the signal transmitting terminal 3420 that orders about isolated component 342 emits beam.Signal receiving end 3422 is when receiving the signal that signal transmitting terminal 3420 sends; to order about controller 32 and control DC-DC power supply changeover device 300; to avoid the magnitude of voltage of the electric power of DC-DC converter 300 outputs constantly to rise, use the effect that reaches overvoltage protection.
Certainly; the utility model also can have other various embodiments; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (9)
1. a power supply device with overvoltage protection, is electrically connected on a power conversion system, it is characterized in that, this power supply device with overvoltage protection comprises:
One power-supply unit, comprises a main power source output and a standby power output, and this main power source output and this standby power output are electrically connected on this power conversion system, and this power-supply unit comprises:
One direct current/DC power converter, has a power output end;
One first sense resistor, is electrically connected on this power output end and this main power source output; And
One second sense resistor, is electrically connected on this power output end and this standby power output;
One first switch element, is electrically connected on this first sense resistor and this main power source output;
One compensating unit, is electrically connected on this main power source output;
One controller, is electrically connected on this compensating unit and this power-supply unit;
One overvoltage protective unit, comprises:
One first comparator, comprises two inputs and an output, and an input of this first comparator is electrically connected on this main power source output, and this output of this first comparator is electrically connected on this first switch element;
One second comparator, comprises two inputs and an output, and an input of this second comparator is electrically connected on this standby power output; And
One the 3rd comparator, comprises two inputs and an output, and an input of the 3rd comparator is electrically connected on this power output end, and this output of the 3rd comparator is electrically connected on this compensating unit.
2. the power supply device with overvoltage protection according to claim 1, is characterized in that, this power-supply unit more comprises an adjuster, is electrically connected between this power output end and this second sense resistor.
3. the power supply device with overvoltage protection according to claim 2; it is characterized in that; this compensating unit comprises a resistor network and an isolated component, and this resistor network is electrically connected on this main power source output, and this isolated component is electrically connected on this resistor network and this controller.
4. the power supply device with overvoltage protection according to claim 3; it is characterized in that; this isolated component comprises a signal transmitting terminal and a signal receiving end, and this signal transmitting terminal is electrically connected on this resistor network, and this signal receiving end is electrically connected on this controller.
5. the power supply device with overvoltage protection according to claim 4, is characterized in that, this output of the 3rd comparator is electrically connected on this signal transmitting terminal of this resistor network and this isolated component.
6. the power supply device with overvoltage protection according to claim 5, is characterized in that, this isolated component is optical coupler.
7. the power supply device with overvoltage protection according to claim 6, is characterized in that, this DC-DC power supply changeover device is LLC power supply changeover device.
8. the power supply device with overvoltage protection according to claim 7; it is characterized in that; another input of this first comparator is for input one first reference voltage; another input of this second comparator is for input one second reference voltage, and another input of the 3rd comparator is for input one the 3rd reference voltage.
9. the power supply device with overvoltage protection according to claim 8, is characterized in that, more comprises a second switch element, is electrically connected on this main power source output and this compensating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144188.2U CN203840194U (en) | 2014-03-27 | 2014-03-27 | Power supply device having overvoltage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420144188.2U CN203840194U (en) | 2014-03-27 | 2014-03-27 | Power supply device having overvoltage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203840194U true CN203840194U (en) | 2014-09-17 |
Family
ID=51517988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420144188.2U Expired - Lifetime CN203840194U (en) | 2014-03-27 | 2014-03-27 | Power supply device having overvoltage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203840194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953804A (en) * | 2014-03-27 | 2015-09-30 | 群光电能科技股份有限公司 | Power supply device having overvoltage protection function |
-
2014
- 2014-03-27 CN CN201420144188.2U patent/CN203840194U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953804A (en) * | 2014-03-27 | 2015-09-30 | 群光电能科技股份有限公司 | Power supply device having overvoltage protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10812664B2 (en) | Power transmission system for wireless communication systems | |
| US9019728B2 (en) | Power converter output voltage clamp and supply terminal | |
| US9997943B2 (en) | Electronic device and power adapter capable of communicating with each other, and associated charging system | |
| TWI539712B (en) | Method and apparatus for controlling wireless induction power supply | |
| US9293925B2 (en) | Charging and power supplying circuit, method and application device | |
| US10073509B2 (en) | Electronic device for combining multiple power signals | |
| US20160344209A1 (en) | Electronic device and power adapter therefor | |
| US10477631B2 (en) | Power circuit applied in LED load | |
| EP3174172B1 (en) | Power supply control device and method for communication network | |
| CN101562392A (en) | Current-level decision device for a power supply device and related power supply device | |
| US20200195150A1 (en) | Isolated switching converter, control circuit and control method thereof | |
| TWI475361B (en) | Current distribution system, current distribution method, and computer system thereof | |
| KR20140108135A (en) | Wireless power supply system | |
| KR102088749B1 (en) | Long-life power supply with power multiplexing function | |
| US11588344B2 (en) | HW and methods for improving safety protocol in wireless chargers | |
| CN203840194U (en) | Power supply device having overvoltage protection function | |
| TWI535165B (en) | Power supplying device having over-voltage protection | |
| US9941804B1 (en) | Power supply system | |
| US9490713B2 (en) | Power supply | |
| CN104953804A (en) | Power supply device having overvoltage protection function | |
| JP2016524453A (en) | Remote radio unit and related devices | |
| US9397556B2 (en) | Power supply apparatus with auxiliary boost circuit | |
| JP3191612U (en) | Power supply device with overvoltage protection function | |
| CN101667772A (en) | Digital over-current protection device for power supply and relevant power supply | |
| US10904019B2 (en) | Communication network power supply control method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |