CN201616684U - Charging circuit with automatic power-off function of charger - Google Patents
Charging circuit with automatic power-off function of charger Download PDFInfo
- Publication number
- CN201616684U CN201616684U CN2009202822128U CN200920282212U CN201616684U CN 201616684 U CN201616684 U CN 201616684U CN 2009202822128 U CN2009202822128 U CN 2009202822128U CN 200920282212 U CN200920282212 U CN 200920282212U CN 201616684 U CN201616684 U CN 201616684U
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- led
- voltage feedback
- triode
- charger
- circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a charging circuit with automatic power-off function of a charger, belonging to the technical field of charger circuits. The charging circuit has the following structure: a pulse width control IC, a voltage feedback resistor, a voltage feedback opto-coupler, and voltage feedback controllable silicon are sequentially connected in series; a delay timer, a three-section control operational amplifier, a first LED current-limiting resistor and an LED indicator lamp are sequentially connected in series; the base electrode of an LED turn-off triode is connected with the delay timer; the collector electrode of the LED turn-off triode is lap-jointed on the circuit between the first LED current-limiting resistor and the LED indicator lamp; the emitting electrode of the LED turn-off triode is connected on a second grounded LED current-limiting resistor in series; the control electrode of the voltage feedback controllable silicon is lap-jointed on the circuit between the delay timer and the LED turn-off triode; and the positive electrode of the voltage feedback controllable silicon is connected with the voltage feedback opto-coupler, and the negative electrode thereof is grounded. The charging circuit has low cost, increases current detection, and automatically carries out time-delay power-off after the battery is fully charged.
Description
Technical field
The utility model relates to the charger circuit technical field, and specifically a kind of battery is full of the automatically charger of the outage charging circuit that cuts off the power supply automatically of back.
Background technology
Charger on the existing market is based on syllogic, after battery is full of, charger also carries out floating charge (tiny stream formula charger) to battery and makes battery heating fill drum even towards quick-fried easily, and to damage 80% be because charger carries out the floating charge overlong time to battery and causes to the battery of electric vehicle on the market according to statistics.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, provide that a kind of circuit structure is simple, easily manufactured, technology maturation, not fragile, avoid electric car charger to cause a kind of intelligent charger that the damages phenomenon charging circuit that cuts off the power supply automatically because of the floating charge overlong time.
The technical solution of the utility model realizes in the following manner, this charger charging circuit that cuts off the power supply automatically, and its structure is that pulse width control IC, Voltage Feedback resistance, Voltage Feedback optocoupler, Voltage Feedback controllable silicon are connected in series successively; Back off timer, syllogic control transport and placing device, a LED current-limiting resistance, LED light are connected in series successively, the base stage that LED turn-offs triode is connected with back off timer, the collector electrode that LED turn-offs triode is overlapped on the circuit between a LED current-limiting resistance and the LED light, and the emitter that LED turn-offs triode is connected on the 2nd LED current-limiting resistance of a ground connection; The Voltage Feedback silicon controlled control utmost point is overlapped on the circuit between back off timer and the LED shutoff triode, and Voltage Feedback silicon controlled anode is connected minus earth with the Voltage Feedback optocoupler.
Be parallel with earth resistance on the circuit between Voltage Feedback resistance and the Voltage Feedback optocoupler.
The minus earth of LED light, anode connect a LED current-limiting resistance.
The beneficial effect that the utility model is compared with prior art produced is:
This charger cuts off the power supply automatically, and to improve the cost that increases on existing charger circuit very little for charging circuit, can play battery and be full of the back effect of outage automatically.This charger charging circuit that cuts off the power supply is automatically used electric car charger and is increased output current and detect, and is full of time-delay, LED breaking circuit system; Syllogic intelligent charger phase III current charges was carried out two hours, and this charger output voltage is lower than cell voltage, and to play charging current be zero.
Having cut off the power supply automatically charger phase I in when charging of charging circuit of this charger is constant current, and second stage is a constant voltage, and the electric weight that shows battery when LED light becomes green by redness is 90%, and charger enters the phase III charging.Syllogic control transport and placing device output high level under unwatched situation;
A: the back off timer back off timer output high level control LED that picks up counting when reaching two hours turn-offs triode LED light is turned off;
B: prolong timer output high level simultaneously and deliver to the voltage detecting circuit that the detection of Voltage Feedback controllable silicon is made up of Voltage Feedback optocoupler, Voltage Feedback resistance, control pulse width control IC, electric motor car is contained electric weight reach 90% back charging and stop charging after two hours thereby reach charger, avoid battery on the market to be full of that the back charger works on that drum is filled in the heating that causes even towards quick-fried phenomenon.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Mark in the accompanying drawing is represented respectively:
1, pulse width control IC, 2, Voltage Feedback resistance, 3, Voltage Feedback optocoupler, 4, the Voltage Feedback controllable silicon, 5, back off timer, 6, syllogic control transport and placing device, 7, a LED current-limiting resistance, 8, LED light, 9, LED turn-offs triode, 10, the 2nd LED current-limiting resistance, 11, earth resistance.
Embodiment
Below in conjunction with accompanying drawing the charger of the present utility model charging circuit that cuts off the power supply is automatically done following detailed description the in detail.
As shown in Figure 1, the charger of the present utility model charging circuit that cuts off the power supply automatically, its structure is that pulse width control IC 1, Voltage Feedback resistance 2, Voltage Feedback optocoupler 3, Voltage Feedback controllable silicon 4 are connected in series successively; Back off timer 5, syllogic control transport and placing device 6, a LED current-limiting resistance 7, LED light 8 are connected in series successively, the base stage that LED turn-offs triode 9 is connected with back off timer 5, the collector electrode that LED turn-offs triode 9 is overlapped on the circuit between a LED current-limiting resistance 7 and the LED light 8, and the emitter that LED turn-offs triode 9 is connected on the 2nd LED current-limiting resistance 10 of a ground connection; The control utmost point of Voltage Feedback controllable silicon 4 is overlapped on back off timer 5 and LED and turn-offs on the circuit between the triode 9, and the anode of Voltage Feedback controllable silicon 4 is connected minus earth with Voltage Feedback optocoupler 3.Be parallel with earth resistance 11 on the circuit between Voltage Feedback resistance 2 and the Voltage Feedback optocoupler 3.The minus earth of LED light 8, anode connect a LED current-limiting resistance 7.
Claims (3)
1. the charger charging circuit that cuts off the power supply automatically is characterized in that pulse width control IC, Voltage Feedback resistance, Voltage Feedback optocoupler, Voltage Feedback controllable silicon are connected in series successively; Back off timer, syllogic control transport and placing device, a LED current-limiting resistance, LED light are connected in series successively, the base stage that LED turn-offs triode is connected with back off timer, the collector electrode that LED turn-offs triode is overlapped on the circuit between a LED current-limiting resistance and the LED light, and the emitter that LED turn-offs triode is connected on the 2nd LED current-limiting resistance of a ground connection; The Voltage Feedback silicon controlled control utmost point is overlapped on the circuit between back off timer and the LED shutoff triode, and Voltage Feedback silicon controlled anode is connected minus earth with the Voltage Feedback optocoupler.
2. the charger according to claim 1 charging circuit that cuts off the power supply automatically is characterized in that being parallel with earth resistance on the circuit between Voltage Feedback resistance and the Voltage Feedback optocoupler.
3. the charger according to claim 1 charging circuit that cuts off the power supply automatically is characterized in that the minus earth of LED light, and anode connects a LED current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822128U CN201616684U (en) | 2009-11-27 | 2009-11-27 | Charging circuit with automatic power-off function of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822128U CN201616684U (en) | 2009-11-27 | 2009-11-27 | Charging circuit with automatic power-off function of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616684U true CN201616684U (en) | 2010-10-27 |
Family
ID=43003046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202822128U Expired - Fee Related CN201616684U (en) | 2009-11-27 | 2009-11-27 | Charging circuit with automatic power-off function of charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486492A (en) * | 2010-12-06 | 2012-06-06 | 鸿富锦精密工业（深圳）有限公司 | Voltage detection circuit |
-
2009
- 2009-11-27 CN CN2009202822128U patent/CN201616684U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486492A (en) * | 2010-12-06 | 2012-06-06 | 鸿富锦精密工业（深圳）有限公司 | Voltage detection circuit |
| CN102486492B (en) * | 2010-12-06 | 2015-03-25 | 鸿富锦精密工业（深圳）有限公司 | Voltage detection circuit |
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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: 20101027 Termination date: 20101127 |