CN204967395U - Alternating current -direct current charging source - Google Patents
Alternating current -direct current charging source Download PDFInfo
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- CN204967395U CN204967395U CN201520652165.7U CN201520652165U CN204967395U CN 204967395 U CN204967395 U CN 204967395U CN 201520652165 U CN201520652165 U CN 201520652165U CN 204967395 U CN204967395 U CN 204967395U
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Abstract
The utility model relates to an alternating current -direct current charging source, include to fall electrical detection circuitry and X capacitor discharge protection circuit, it includes third resistance, fourth resistance, the 5th resistance, the 5th electric capacity and first triode to fall electrical detection circuitry, the collecting electrode of first triode passes through the external 5V DC voltage power of fourth resistance, the emitter ground of first triode, the projecting pole of first triode is connected with the collecting electrode of first triode through the 5th electric capacity, and this alternating current -direct current charging source passes through the opto -coupler can repid discharge when the mistake is electric, has improved the reliability of circuit, can also carry out signal isolation through the opto -coupler moreover, has fine signal transmission ability to the reliability and the practicality of circuit have further been guaranteed in the sensitivity of improved circuit discernment, and the circuit adopt to detect with the X capacitor discharge integrated design, reduced the consumption of circuit, can satisfy the requirement of american california CEC standard and can satisfy an ampere rule requirement again.
Description
Technical field
The utility model relates to field of power supplies, particularly a kind of alternating current-direct current charge power supply.
Background technology
At most of automobile, business machine, all need when the power-off of AC civil power charger to automobile, business machine signal, allow it know the state of charging system, perform next order.Along with the arrival of intellectualization times, increasing automobile and business machine they need the state of the work knowing each equipment, more need charger Quick to supply a state recognition signal accurately, avoid the identification signal of mistake to give equipment, the execution of the order that makes the mistake.Present a lot of testing circuits can not accurately, a Quick confession AC power down identification signal, affect the performance of equipment.And present power-supply device is all generally adopt the mode worked alone that detects and charge, the power consumption of such equipment is large, reduces the practicality of equipment.
Utility model content
The technical problems to be solved in the utility model is: large in order to overcome prior art circuits power consumption, and AC identifies the insensitive and deficiency that fail safe is not high provides a kind of AC to identify alternating current-direct current charge power supply sensitive and safe and reliable and low in energy consumption.
The utility model solves the technical scheme that its technical problem adopts: a kind of alternating current-direct current charge power supply, comprise power-fail detection circuit and X capacitor discharge protective circuit, described power-fail detection circuit is connected with X capacitor discharge protective circuit, described power-fail detection circuit comprises the 3rd resistance, 4th resistance, 5th resistance, 5th electric capacity and the first triode, the collector electrode of described first triode is by the external 5V DC voltage power supply of the 4th resistance, the grounded emitter of described first triode, the emitter of described first triode is connected with the collector electrode of the first triode by the 5th electric capacity, the base stage of described first triode is by the 5th grounding through resistance, the series circuit that collector electrode and the 4th resistance and the 3rd resistance of described first triode form is connected.
As preferably, described X capacitor discharge protective circuit comprises filter circuit and discharge protection circuit, described filter circuit is connected with power-fail detection circuit by discharge protection circuit, described filter circuit comprises fuse, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity and the first inductance, described first inductance is common mode inductance, the first input end of described first inductance is connected with the second input of the first inductance by the first electric capacity, the first input end of described first inductance is connected with fuse, two outputs of described first inductance are respectively by the second electric capacity and the 3rd capacity earth, first output of described first inductance is connected with the second output of the first inductance by the 4th electric capacity, described discharge protection circuit comprises the first resistance, second resistance, first diode and optocoupler, first output of described first inductance is by the first resistance, the series circuit that second resistance and the first diode form is connected with the second output of the first inductance, the first end of described optocoupler is connected with the first diode cathode, second end of described optocoupler is connected with the first diode anode, 3rd end of described optocoupler is connected with the base stage of the first triode, 4th end of described optocoupler is by the external 5V DC voltage power supply of the 3rd resistance.
As preferably, in order to improve anti-electromagnetic interference capability and the filter effect of X capacitor discharge protective circuit, the capacitance of described first electric capacity is 0.47uF, and the capacitance of described second electric capacity is 0.33uF.
As preferably, impact in order to the reliability and protection optocoupler U1 that ensure detection signal are subject to reverse voltage, the resistance of described first resistance and the second resistance is 470k Ω, and the model of described first diode is LL4148.
As preferably, in order to ensure the reliability that signal exports and reduce design cost, described optocoupler U1 is linear optical coupling.
The beneficial effects of the utility model are, this alternating current-direct current charge power supply can the repid discharge when dead electricity by optocoupler, improve the reliability of circuit, and can also signal isolation be carried out by optocoupler, there is good signal transmission capabilities, thus improve the sensitivity of circuit identification, further ensure the dependable with function of circuit; And circuit adopts detection and X capacitor discharge integrated design, reduces the power consumption of circuit, can meet California, USA CEC standard-required and can meet safety requirement again.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the circuit theory diagrams of alternating current-direct current charge power supply of the present utility model;
In figure: 1. filter circuit, 2. discharge protection circuit, 3. power-fail detection circuit; U1. optocoupler, F1. fuse, C1. first electric capacity; C2. the second electric capacity, C3. the 3rd electric capacity, C4. the 4th electric capacity; C5. the 5th electric capacity, R1. first resistance, R2. second resistance; R3. the 3rd resistance, R4. the 4th resistance, R5. the 5th resistance; L1. the first inductance, Q1. first triode, D1. first diode.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1, a kind of alternating current-direct current charge power supply, comprise power-fail detection circuit 3 and X capacitor discharge protective circuit, described power-fail detection circuit 3 is connected with X capacitor discharge protective circuit, described power-fail detection circuit 3 comprises the 3rd resistance R3, 4th resistance R4, 5th resistance R5, 5th electric capacity C5 and the first triode Q1, the collector electrode of described first triode Q1 is by the external 5V DC voltage power supply of the 4th resistance R4, the grounded emitter of described first triode Q1, the emitter of described first triode Q1 is connected with the collector electrode of the first triode Q1 by the 5th electric capacity C5, the base stage of described first triode Q1 is by the 5th resistance R5 ground connection, the series circuit that collector electrode and the 4th resistance R4 and the 3rd resistance R3 of described first triode Q1 form is connected.
As preferably, described X capacitor discharge protective circuit comprises filter circuit 1 and discharge protection circuit 2, described filter circuit 1 is connected with power-fail detection circuit 3 by discharge protection circuit 2, described filter circuit 1 comprises fuse F1, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4 and the first inductance L 1, described first inductance L 1 is common mode inductance, the first input end of described first inductance L 1 is connected with the second input of the first inductance L 1 by the first electric capacity C1, the first input end of described first inductance L 1 is connected with fuse F1, two outputs of described first inductance L 1 are respectively by the second electric capacity C2 and the 3rd electric capacity C3 ground connection, first output of described first inductance L 1 is connected with the second output of the first inductance L 1 by the 4th electric capacity C4, described discharge protection circuit 2 comprises the first resistance R1, second resistance R2, first diode D1 and optocoupler U1, first output of described first inductance L 1 is by the first resistance R1, the series circuit that second resistance R2 and the first diode D1 form is connected with the second output of the first inductance L 1, the first end of described optocoupler U1 is connected with the first diode D1 negative electrode, second end of described optocoupler U1 is connected with the first diode D1 anode, 3rd end of described optocoupler U1 is connected with the base stage of the first triode Q1, 4th end of described optocoupler U1 is by the external 5V DC voltage power supply of the 3rd resistance R3.
As preferably, in order to improve anti-electromagnetic interference capability and the filter effect of X capacitor discharge protective circuit 1, the capacitance of described first electric capacity C1 is 0.47uF, and the capacitance of described second electric capacity C2 is 0.33uF.
As preferably, impact in order to the reliability and protection optocoupler U1 that ensure detection signal are subject to reverse voltage, the resistance of described first resistance R1 and the second resistance R2 is 470k Ω, and the model of described first diode D1 is LL4148.
As preferably, in order to ensure the reliability that signal exports and reduce design cost, described optocoupler U1 is linear optical coupling.
The operation principle of this alternating current-direct current charge power supply is: when AC civil power has electricity; AC civil power passes through electromagnetism interference and the filtering energy storage of X capacitor discharge protective circuit 1; after carrying out signal isolation by optocoupler U1 again; send in the power-fail detection circuit 3 of the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 5th electric capacity C5 and the first triode Q1 composition; amplify shaping on the 5th electric capacity C5, export a low level AC city power detection signal; AC civil power each half cycle optocoupler U1 can conducting once, make maintenance low level on the 5th electric capacity C5.When the power down of AC civil power; AC civil power cannot send into optocoupler U1; optocoupler U1 not conducting; no signal sends into testing circuit; first triode Q1 ends; the AC city power detection signal of an output high level on 5th electric capacity C5, the electricity simultaneously on the first electric capacity C1 and the 4th electric capacity C4 is by discharge protection circuit 2 repid discharge, and touching AC plug after guaranteeing power down can not electric people.
Compared with prior art, this alternating current-direct current charge power supply can the repid discharge when dead electricity by optocoupler U1, improve the reliability of circuit, and can also signal isolation be carried out by optocoupler U1, there is good signal transmission capabilities, thus improve the sensitivity of circuit identification, further ensure the dependable with function of circuit; And circuit adopts detection and X capacitor discharge integrated design, reduces the power consumption of circuit, can meet California, USA CEC standard-required and can meet safety requirement again.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (4)
1. an alternating current-direct current charge power supply, comprise power-fail detection circuit (3) and X capacitor discharge protective circuit, described power-fail detection circuit (3) is connected with X capacitor discharge protective circuit, it is characterized in that, described power-fail detection circuit (3) comprises the 3rd resistance (R3), 4th resistance (R4), 5th resistance (R5), 5th electric capacity (C5) and the first triode (Q1), the collector electrode of described first triode (Q1) is by the external 5V DC voltage power supply of the 4th resistance (R4), the grounded emitter of described first triode (Q1), the emitter of described first triode (Q1) is connected with the collector electrode of the first triode (Q1) by the 5th electric capacity (C5), the base stage of described first triode (Q1) is by the 5th resistance (R5) ground connection, the series circuit that collector electrode and the 4th resistance (R4) and the 3rd resistance (R3) of described first triode (Q1) form is connected, described X capacitor discharge protective circuit comprises filter circuit (1) and discharge protection circuit (2), described filter circuit (1) is connected with power-fail detection circuit (3) by discharge protection circuit (2), described filter circuit (1) comprises fuse (F1), first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), 4th electric capacity (C4) and the first inductance (L1), described first inductance (L1) is common mode inductance, the first input end of described first inductance (L1) is connected with the second input of the first inductance (L1) by the first electric capacity (C1), the first input end of described first inductance (L1) is connected with fuse (F1), two outputs of described first inductance (L1) are respectively by the second electric capacity (C2) and the 3rd electric capacity (C3) ground connection, first output of described first inductance (L1) is connected with the second output of the first inductance (L1) by the 4th electric capacity (C4), described discharge protection circuit (2) comprises the first resistance (R1), second resistance (R2), first diode (D1) and optocoupler (U1), first output of described first inductance (L1) is by the first resistance (R1), the series circuit that second resistance (R2) and the first diode (D1) form is connected with the second output of the first inductance (L1), the first end of described optocoupler (U1) is connected with the first diode (D1) negative electrode, second end of described optocoupler (U1) is connected with the first diode (D1) anode, 3rd end of described optocoupler (U1) is connected with the base stage of the first triode (Q1), 4th end of described optocoupler (U1) is by the external 5V DC voltage power supply of the 3rd resistance (R3).
2. alternating current-direct current charge power supply as claimed in claim 1, it is characterized in that, the capacitance of described first electric capacity (C1) is 0.47uF, and the capacitance of described second electric capacity (C2) is 0.33uF.
3. alternating current-direct current charge power supply as claimed in claim 1, it is characterized in that, the resistance of described first resistance (R1) and the second resistance (R2) is 470k Ω, and the model of described first diode (D1) is LL4148.
4. alternating current-direct current charge power supply as claimed in claim 1, it is characterized in that, described optocoupler (U1) is linear optical coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652165.7U CN204967395U (en) | 2015-08-26 | 2015-08-26 | Alternating current -direct current charging source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652165.7U CN204967395U (en) | 2015-08-26 | 2015-08-26 | Alternating current -direct current charging source |
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| Publication Number | Publication Date |
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| CN204967395U true CN204967395U (en) | 2016-01-13 |
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| CN201520652165.7U Active CN204967395U (en) | 2015-08-26 | 2015-08-26 | Alternating current -direct current charging source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099893A (en) * | 2016-08-16 | 2016-11-09 | 凌云光技术集团有限责任公司 | Trigger signal surge protection circuit |
| CN114764106A (en) * | 2020-12-31 | 2022-07-19 | 广州艾美网络科技有限公司 | Power failure detection circuit, power supply control circuit and audio equipment |
-
2015
- 2015-08-26 CN CN201520652165.7U patent/CN204967395U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099893A (en) * | 2016-08-16 | 2016-11-09 | 凌云光技术集团有限责任公司 | Trigger signal surge protection circuit |
| CN114764106A (en) * | 2020-12-31 | 2022-07-19 | 广州艾美网络科技有限公司 | Power failure detection circuit, power supply control circuit and audio equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Huangtian Pui Kong Industrial Zone Third Patentee after: Shenzhen Yade power Polytron Technologies Inc Address before: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Huangtian Pui Kong Industrial Zone Third Patentee before: Yade electric (Shenzhen) Co. Ltd. |