CN203289143U - A power supply circuit capable of supplying power by utilizing mains electricity or battery selectively - Google Patents
A power supply circuit capable of supplying power by utilizing mains electricity or battery selectively Download PDFInfo
- Publication number
- CN203289143U CN203289143U CN2013202988153U CN201320298815U CN203289143U CN 203289143 U CN203289143 U CN 203289143U CN 2013202988153 U CN2013202988153 U CN 2013202988153U CN 201320298815 U CN201320298815 U CN 201320298815U CN 203289143 U CN203289143 U CN 203289143U
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- Prior art keywords
- power supply
- battery
- circuit
- stabilizing didoe
- voltage regulator
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- 230000005611 electricity Effects 0.000 title abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 27
- 230000009466 transformation Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a power supply circuit capable of supplying power by utilizing mains electricity or a battery selectively. The power supply circuit comprises a transformer rectifier circuit, a low dropout voltage regulator circuit, a mains electricity power supply circuit, a battery charging circuit and a battery power supply circuit. The transformer rectifier circuit comprises a transformer and a rectifier bridge; the low dropout voltage regulator circuit comprises a low dropout voltage regulator, a first electrolytic capacitor connected to the input port of the low dropout voltage regulator and a second electrolytic capacitor connected to the output port of the low dropout voltage regulator, the other end of the first electrolytic capacitor and the other end of the second electrolytic capacitor being earthed; the mains electricity power supply circuit supplies power to peripheral circuits by utilizing mains electricity; the battery charging circuit is used for charging a battery connected to the circuit; and the battery power supply circuit supplies power to the peripheral circuits by utilizing the battery. The mains electricity power supply circuit comprises a circuit protection component and a power supply selecting component. The battery charging circuit comprises an overcharging cut-off component. The power supply circuit can charge storage batteries and can supply power by utilizing mains electricity or a battery selectively. The power supply circuits are isolated from the charging circuit and the overcharging protection function is achieved, so that the service lifetime of the storage batteries is greatly prolonged.
Description
Technical field
The utility model belongs to electricity field, especially relates to a kind ofly can selecting again to utilize civil power or battery powered power supply circuits for charge in batteries.
Background technology
The power supply circuits with charge function in existing technology, generally just adopt transformer pressure-reducing by the rectification circuit rectification, and output DC is the peripheral circuit power supply or is charge in batteries.This series products can only be exported a kind of voltage, the circuit supply that can only require for having relevant voltage, and can only give a kind of storage battery power supply of specification.Simultaneously, storage battery is always in running order, and energy consumption is larger, and has shortened the useful life of storage battery.Do not keep apart and be easy to exert an influence mutually between charging circuit and power supply circuits, and there is no protection device in circuit, circuit is easy to be burned.
The utility model content
Problem to be solved in the utility model is to provide a kind of civil power and the optional power supply circuits of battery; have and can select again to utilize civil power or battery powered advantage for charge in batteries; simultaneously; power supply circuits and charging circuit are isolated; have overcharge protection, greatly extended the useful life of storage battery.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the optional power supply circuits of a kind of civil power and battery comprise:
The transformation rectification circuit, comprise transformer and rectifier bridge;
The low voltage difference voltage regulator circuit, comprise low difference voltage regulator, be connected to the first electrochemical capacitor on its input port and be connected to the second electrochemical capacitor on its output port, and the other end of the first electrochemical capacitor and the second electrochemical capacitor ground connection respectively;
The mains-supplied circuit is the peripheral circuit power supply with civil power;
Battery charger, be used to the battery charging of place in circuit;
Battery feed circuit is the peripheral circuit power supply with battery;
Described mains-supplied circuit comprises circuit protection parts and power supply alternative pack; Described battery charger comprises the cut-off parts of overcharging.
As a kind of preferred version of the present utility model, described circuit protection parts are the first voltage stabilizing didoe and the second voltage stabilizing didoe.
As another kind of preferred version of the present utility model, described power supply alternative pack is the first diode and the second diode.
As another preferred version of the present utility model, the described cut-off parts of overcharging is the second voltage stabilizing didoe.
As further preferred version of the present utility model, the A of civil power, B end connects respectively the first pin and second pin of transformer, three-prong and the 4th pin of the input termination transformer of rectifier bridge;
Input, the other end ground connection of the output one termination low difference voltage regulator of rectifier bridge;
The output of low difference voltage regulator passes through the first diode to extraneous circuit supply, and separate two branch roads, negative pole that connects the second diode wherein, another connects the negative electrode of the second voltage stabilizing didoe, and the first voltage stabilizing didoe and the second voltage stabilizing didoe are connected in parallel on respectively the two ends of the first electrochemical capacitor and the second electrochemical capacitor;
The positive pole of the battery socket of battery charger connects the positive pole of the second diode, anode and the ground that negative pole connects respectively the second voltage stabilizing didoe.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, the utility model is realized and can be selected again to utilize civil power or battery powered function for charge in batteries; The first diode and the second diode selecting are mains-supplied or storage battery power supply; The second voltage stabilizing didoe not only has the overcharge of a battery defencive function, protects charging circuit simultaneously together with the first voltage stabilizing didoe; Low difference voltage regulator can be regulated power supply and charging voltage, can be the circuit supply of different voltage requests, can be the charge in batteries of different size again.
Description of drawings
Fig. 1 is the circuit block diagram of preferred implementation of the present utility model;
Fig. 2 is the circuit theory diagrams of preferred implementation of the present utility model.
In figure:
1, transformation rectification circuit 2, low voltage difference voltage regulator circuit 3, mains-supplied circuit
4, battery charger 5, battery feed circuit
Embodiment
As shown in Figure 1, 2, the utility model provides a kind of civil power and the optional power supply circuits of battery, comprising:
Low voltage difference voltage regulator circuit 2, comprise low difference voltage regulator U
2, be connected to the first electrochemical capacitor C on its input port
1With the second electrochemical capacitor C that is connected on its output port
2, and the first electrochemical capacitor C
1With the second electrochemical capacitor C
2Other end ground connection respectively;
Mains-supplied circuit 3 is the peripheral circuit power supply with civil power;
Described mains-supplied circuit 3 comprises circuit protection parts and power supply alternative pack; Described battery charger 4 comprises the cut-off parts of overcharging.
As a kind of preferred version of the present utility model, described circuit protection parts are the first voltage stabilizing didoe D
1With the second voltage stabilizing didoe D
2.
As another kind of preferred version of the present utility model, described power supply alternative pack is the first diode D
3With the second diode D
4.
As another preferred version of the present utility model, the described cut-off parts of overcharging is the second voltage stabilizing didoe D
2.
As further preferred version of the present utility model, the A of civil power, B end meets respectively the first pin T of transformer T
1With the second pin T
2, the three-prong T of the input termination transformer T of rectifier bridge U
3With the 4th pin T
4
The output one termination low difference voltage regulator U of rectifier bridge T
2Input, other end ground connection;
Low difference voltage regulator U
2Output by the first diode D
3To extraneous circuit supply, and separate two branch roads, wherein one connects the second diode D
4Negative pole, another meets the second voltage stabilizing didoe D
2Negative electrode, the first voltage stabilizing didoe D
1With the second voltage stabilizing didoe D
2Be connected in parallel on respectively the first electrochemical capacitor C
1With the second electrochemical capacitor C
2Two ends;
The positive pole of the battery socket BATT of battery charger 3 meets the second diode D
4Positive pole, negative pole meet respectively the second voltage stabilizing didoe D
2Anode and ground.
The course of work of this example: as preferred implementation of the present utility model, described low difference voltage regulator U
2LM1117.Alternating current enters circuit from A, B termination, enters rectifier bridge U after transformer T step-down, and output DC enters the P that output voltage is the LM1117 of 3.3V
3Pin, P
1Pin ground connection, P
2Pin and P
4After the pin short circuit, then meet the first diode D
3Anode, the first diode D
3Conducting, circuit is powered to the external world.The P of LM1117
3Pin and P
2Pin meets respectively the electrochemical capacitor C of a 100uF
1, C
2.When electric current was enough large, the second voltage stabilizing didoe D2 was breakdown, and battery starts charging, when battery is full of, and the second voltage stabilizing didoe D
2Cut-off.If remove civil power, the second diode D
4Conducting, battery start power supply.The first voltage stabilizing didoe D
1With the second voltage stabilizing didoe D
2All play protective circuit, prevented the effect that circuit burns out.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., within all should still belonging to patent covering scope of the present utility model.
Claims (5)
1. a civil power and the optional power supply circuits of battery comprise:
Transformation rectification circuit (1), comprise transformer (T) and rectifier bridge (U
1);
Low voltage difference voltage regulator circuit (2), comprise low difference voltage regulator (U
2), be connected to the first electrochemical capacitor (C on its input port
1) and be connected to the second electrochemical capacitor (C on its output port
2), and the first electrochemical capacitor (C
1) and the second electrochemical capacitor (C
2) other end ground connection respectively;
Mains-supplied circuit (3) is the peripheral circuit power supply with civil power;
Battery charger (4), be used to the battery charging of place in circuit;
Battery feed circuit (5) is the peripheral circuit power supply with battery;
It is characterized in that: described mains-supplied circuit (3) comprises circuit protection parts and power supply alternative pack; Described battery charger (4) comprises the cut-off parts of overcharging.
2. optional power supply circuits of civil power according to claim 1 and battery, it is characterized in that: described circuit protection parts are the first voltage stabilizing didoe (D
1) and the second voltage stabilizing didoe (D
2).
3. optional power supply circuits of civil power according to claim 1 and battery, it is characterized in that: described power supply alternative pack is the first diode (D
3) and the second diode (D
4).
4. optional power supply circuits of civil power according to claim 1 and battery, it is characterized in that: the described cut-off parts of overcharging is the second voltage stabilizing didoe (D
2).
5. optional power supply circuits of civil power according to claim 1 and battery is characterized in that: the A of civil power, B end meets respectively the first pin (T of transformer (T)
1) and the second pin (T
2), the three-prong (T of the input termination transformer (T) of rectifier bridge (U)
3) and the 4th pin (T
4);
The output one termination low difference voltage regulator (U of rectifier bridge (T)
2) input, other end ground connection;
Low difference voltage regulator (U
2) output by the first diode (D
3) to extraneous circuit supply, and separate two branch roads, wherein one connects the second diode (D
4) negative pole, another meets the second voltage stabilizing didoe (D
2) negative electrode, the first voltage stabilizing didoe (D
1) and the second voltage stabilizing didoe (D
2) be connected in parallel on respectively the first electrochemical capacitor (C
1) and the second electrochemical capacitor (C
2) two ends;
The positive pole of the battery socket (BATT) of battery charger (3) meets the second diode (D
4) positive pole, negative pole meet respectively the second voltage stabilizing didoe (D
2) anode and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202988153U CN203289143U (en) | 2013-05-28 | 2013-05-28 | A power supply circuit capable of supplying power by utilizing mains electricity or battery selectively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202988153U CN203289143U (en) | 2013-05-28 | 2013-05-28 | A power supply circuit capable of supplying power by utilizing mains electricity or battery selectively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289143U true CN203289143U (en) | 2013-11-13 |
Family
ID=49545487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202988153U Expired - Fee Related CN203289143U (en) | 2013-05-28 | 2013-05-28 | A power supply circuit capable of supplying power by utilizing mains electricity or battery selectively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289143U (en) |
-
2013
- 2013-05-28 CN CN2013202988153U patent/CN203289143U/en not_active Expired - Fee Related
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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: 20131113 Termination date: 20160528 |