CN204947668U - A kind of portable power source battery charging circuit - Google Patents
A kind of portable power source battery charging circuit Download PDFInfo
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- CN204947668U CN204947668U CN201520698489.4U CN201520698489U CN204947668U CN 204947668 U CN204947668 U CN 204947668U CN 201520698489 U CN201520698489 U CN 201520698489U CN 204947668 U CN204947668 U CN 204947668U
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Abstract
The utility model discloses a kind of portable power source battery charging circuit, comprise diode VD1, resistance R1, triode VT1, electric capacity C1, optocoupler U1 and transformer T, described diode VD1 positive pole connects 220V alternating current one end, diode VD1 negative pole is contact resistance R2 respectively, resistance R3, electric capacity C5 and transformer T coil L1, the resistance R3 other end connects diode VD2 negative pole and the electric capacity C5 other end respectively, diode VD2 positive pole is the connection transformer T coil L1 other end and triode VT1 collector electrode respectively, triode VT1 base stage is the contact resistance R2 other end respectively, resistance R4 and triode VT2 collector electrode, triode VT2 emitter connects the electric capacity C2 other end respectively, resistance R1, electric capacity C1, resistance R7 and transformer T coil L2.The utility model portable power source battery charging circuit, with over-and under-voltage automatic regulation function during charging, fail safe is high, and circuit structure is simple, and cost is low, is applicable to very much promoting the use of.
Description
Technical field
The utility model relates to a kind of portable power source, specifically a kind of portable power source battery charging circuit.
Background technology
Along with promoting the use of of portable equipment, stage also climbed up by portable power source, and the charging safety of portable power source is the Important Problems that present mobile field is paid close attention to always.
Utility model content
The purpose of this utility model is to provide a kind of portable power source battery charging circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of portable power source battery charging circuit, comprise diode VD1, resistance R1, triode VT1, electric capacity C1, optocoupler U1 and transformer T, described diode VD1 positive pole connects 220V alternating current one end, diode VD1 negative pole is contact resistance R2 respectively, resistance R3, electric capacity C5 and transformer T coil L1, the resistance R3 other end connects diode VD2 negative pole and the electric capacity C5 other end respectively, diode VD2 positive pole is the connection transformer T coil L1 other end and triode VT1 collector electrode respectively, triode VT1 base stage is the contact resistance R2 other end respectively, resistance R4 and triode VT2 collector electrode, triode VT2 emitter connects the electric capacity C2 other end respectively, resistance R1, electric capacity C1, resistance R7 and transformer T coil L2, the resistance R1 other end connects the 220V alternating current other end, the transformer T coil L2 other end is the contact resistance R4 other end and diode VD3 positive pole respectively, diode VD3 negative pole connects the electric capacity C1 other end respectively, the resistance R7 other end and optocoupler U1 pin 4, optocoupler U1 pin 3 is connecting triode VT2 base stage respectively, resistance R5 and resistance R6, the resistance R6 other end is the contact resistance R5 other end and triode VT1 emitter respectively, described transformer T coil L3 one end connects diode VD4 positive pole, diode VD4 negative pole connects electric capacity C8 respectively, resistance R8, resistance R9 and batteries E positive pole, batteries E negative pole connects the electric capacity C8 other end respectively, the transformer T coil L3 other end and diode VD5 positive pole, diode VD5 negative pole is the contact resistance R8 other end and optocoupler U1 pin 2 respectively, the optocoupler U1 pin 1 contact resistance R9 other end, described optocoupler U1 model is P521.
As the utility model further scheme: described storage battery E rated voltage is 24V.
Compared with prior art, the beneficial effects of the utility model are: the utility model portable power source battery charging circuit, and with over-and under-voltage automatic regulation function during charging, fail safe is high, and circuit structure is simple, and cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of portable power source battery charging circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of portable power source battery charging circuit, comprise diode VD1, resistance R1, triode VT1, electric capacity C1, optocoupler U1 and transformer T, described diode VD1 positive pole connects 220V alternating current one end, diode VD1 negative pole is contact resistance R2 respectively, resistance R3, electric capacity C5 and transformer T coil L1, the resistance R3 other end connects diode VD2 negative pole and the electric capacity C5 other end respectively, diode VD2 positive pole is the connection transformer T coil L1 other end and triode VT1 collector electrode respectively, triode VT1 base stage is the contact resistance R2 other end respectively, resistance R4 and triode VT2 collector electrode, triode VT2 emitter connects the electric capacity C2 other end respectively, resistance R1, electric capacity C1, resistance R7 and transformer T coil L2, the resistance R1 other end connects the 220V alternating current other end, the transformer T coil L2 other end is the contact resistance R4 other end and diode VD3 positive pole respectively, diode VD3 negative pole connects the electric capacity C1 other end respectively, the resistance R7 other end and optocoupler U1 pin 4, optocoupler U1 pin 3 is connecting triode VT2 base stage respectively, resistance R5 and resistance R6, the resistance R6 other end is the contact resistance R5 other end and triode VT1 emitter respectively, described transformer T coil L3 one end connects diode VD4 positive pole, diode VD4 negative pole connects electric capacity C8 respectively, resistance R8, resistance R9 and batteries E positive pole, batteries E negative pole connects the electric capacity C8 other end respectively, the transformer T coil L3 other end and diode VD5 positive pole, diode VD5 negative pole is the contact resistance R8 other end and optocoupler U1 pin 2 respectively, the optocoupler U1 pin 1 contact resistance R9 other end, described optocoupler U1 model is P521.
Storage battery E rated voltage is 24V.
Operation principle of the present utility model is: refer to Fig. 1, alternating current 220V is through diode VD1 halfwave rectifier, electric capacity C2 filtering, the direct voltage of about 300V is formed at its two ends, this voltage is added to the C pole of VT1 through switch transformer T coil L1, this voltage provides a forward bias voltage through the b pole that starting resistance R2 is VT1 simultaneously, makes VT1 conducting.Now, the intermittent oscillation circuit of VT1 and T composition is started working, electric current is had to pass through in T coil L1, the voltage that transformer T coil L2 responds to is added to the b pole of VT1 by feedback resistance R4 and electric capacity C4, due to positive feedback effect, the b pole On current of VT1 is strengthened, it is made to enter saturation region rapidly, meanwhile, the voltage that T coil L2 responds to is through VD3 rectification, after C1 filtering, as the power supply of optocoupler U1, this voltage charges to C4 through resistance R4 simultaneously, along with C4 both end voltage constantly raises, the b pole tension of VT1 reduces gradually, triode VT1 is made to exit saturation region gradually, the magnetic flux produced in T coil L1 also starts to reduce, the negative feedback voltage that T coil L2 responds to, VT1 is ended rapidly, complete a concussion cycle, cutoff device is entered at VT1, the voltage that T coil L3 responds to is through VD4 rectification, after electric capacity C8 filtering, export a constant direct voltage, when charger output voltage raises, optocoupler U1 conducting, thus make VT2 conducting, VT1 base voltage is dragged down, makes its ON time shorten or end rapidly, after T coupling, T coil L3 output end voltage is reduced, otherwise, T coil L3 output end voltage is raised, thus guarantees the stable of charging voltage.
Switching on power moment, when certain reason makes the electric current on VT1 excessive, the pressure drop on R5 is just large, makes VT2 conducting, and VT1 ends, thus effectively prevents VT1 from damaging because impulse current is excessive.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a portable power source battery charging circuit, comprise diode VD1, resistance R1, triode VT1, electric capacity C1, optocoupler U1 and transformer T, it is characterized in that, described diode VD1 positive pole connects 220V alternating current one end, diode VD1 negative pole is contact resistance R2 respectively, resistance R3, electric capacity C5 and transformer T coil L1, the resistance R3 other end connects diode VD2 negative pole and the electric capacity C5 other end respectively, diode VD2 positive pole is the connection transformer T coil L1 other end and triode VT1 collector electrode respectively, triode VT1 base stage is the contact resistance R2 other end respectively, resistance R4 and triode VT2 collector electrode, triode VT2 emitter connects the electric capacity C2 other end respectively, resistance R1, electric capacity C1, resistance R7 and transformer T coil L2, the resistance R1 other end connects the 220V alternating current other end, the transformer T coil L2 other end is the contact resistance R4 other end and diode VD3 positive pole respectively, diode VD3 negative pole connects the electric capacity C1 other end respectively, the resistance R7 other end and optocoupler U1 pin 4, optocoupler U1 pin 3 is connecting triode VT2 base stage respectively, resistance R5 and resistance R6, the resistance R6 other end is the contact resistance R5 other end and triode VT1 emitter respectively, described transformer T coil L3 one end connects diode VD4 positive pole, diode VD4 negative pole connects electric capacity C8 respectively, resistance R8, resistance R9 and batteries E positive pole, batteries E negative pole connects the electric capacity C8 other end respectively, the transformer T coil L3 other end and diode VD5 positive pole, diode VD5 negative pole is the contact resistance R8 other end and optocoupler U1 pin 2 respectively, the optocoupler U1 pin 1 contact resistance R9 other end, described optocoupler U1 model is P521.
2. portable power source battery charging circuit according to claim 1, is characterized in that, described storage battery E rated voltage is 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520698489.4U CN204947668U (en) | 2015-09-10 | 2015-09-10 | A kind of portable power source battery charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520698489.4U CN204947668U (en) | 2015-09-10 | 2015-09-10 | A kind of portable power source battery charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204947668U true CN204947668U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520698489.4U Expired - Fee Related CN204947668U (en) | 2015-09-10 | 2015-09-10 | A kind of portable power source battery charging circuit |
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| Country | Link |
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| CN (1) | CN204947668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195078A (en) * | 2017-07-05 | 2017-09-22 | 佛山杰致信息科技有限公司 | Portable movable payment mechanism |
-
2015
- 2015-09-10 CN CN201520698489.4U patent/CN204947668U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195078A (en) * | 2017-07-05 | 2017-09-22 | 佛山杰致信息科技有限公司 | Portable movable payment mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |