CN2218988Y - electric charger capable of automatic regulating charging current - Google Patents
electric charger capable of automatic regulating charging current Download PDFInfo
- Publication number
- CN2218988Y CN2218988Y CN 95239256 CN95239256U CN2218988Y CN 2218988 Y CN2218988 Y CN 2218988Y CN 95239256 CN95239256 CN 95239256 CN 95239256 U CN95239256 U CN 95239256U CN 2218988 Y CN2218988 Y CN 2218988Y
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- battery
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- charging
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a charger capable of automatic regulating charging current, which is provided with an automatic shunting circuit and a removing circuit for the ' memory effect ' of a battery which are connected in parallel with both ends of a charged battery; charging indicating circuits are connected in parallel with both ends of a rectifying diode D. The charger can efficiently charge for an alkaline dry battery and various secondary batteries. The utility model has the advantages of easy fabrication, convenient operation and low cost.
Description
The utility model relates to a kind of charger that can adjust the charging current size automatically.
At present, along with popularizing of beeper, the consumption figure of alkaline dry battery increases, but is disposable use, wastes too big.In recent years, though some dry battery chargers occurred, its charging effect to alkaline battery is not good, even the phenomenon of alkaline battery blast or leakage can occur.
Theoretically, alkaline battery can charge, and is just higher to the size requirements of its charging current.Requirement to the alkaline battery charging is: at first to battery discharge, to remove " memory effect " of battery, the battery that just takes off from power device can save this step.Large current charge when the voltage of single alkaline battery rises to the 1.4V left and right sides, should reduce charging current then.Afterwards, along with the height that edges up then that is recharged cell voltage, charging current should progressively reduce.The amplitude that charging current reduces should be adjusted to: the voltage of guaranteeing the single alkaline battery that charging must not be elevated to more than the 1.90V.For existing various rechargeable batteries, the requirement of its charging current size equally also is: first large current charge, after cell voltage was elevated to certain value, with the continuation rising of cell voltage, charging current was satisfied decrescence little.
At the problems referred to above, the utility model is released a kind of charger that more is applicable to alkaline dry battery and various rechargeable batteries.
The utility model is by the charging box, and battery deck and injection casing are formed, and power transformer B, rectifier diode D1, resistance R I all are contained in the charging box, and LED 1 is contained in charging box front.The 220V civil power is through transformer B step-down, and D1 halfwave rectifier, R1 current limliting form charges to battery E.Its technical characterictic is: be recharged pond E and be parallel with an automatic shunt circuit.Its effect is that this circuit is connected automatically when being recharged cell voltage E and being raised to certain value, makes the charging current of battery E reduce with the rising of the voltage of battery E.The automatic shunt circuit in parallel with being recharged battery E can be to be made of LED 2.Can be parallel with resistance R 2 at rectifier diode DI two ends and send out diode (LED) 1, LED1 is luminous as charging indicator light.Be recharged pond E and can be parallel with the circuit that resistance R 3 and diode D2 connect, be used to remove " memory effect " of battery.
Circuit theory of the present utility model is seen Fig. 1.
The 220V civil power is through power transformer B step-down, and rectifier diode D1 halfwave rectifier, resistance R 1 current limliting save alkaline battery E to one and charge, and LED 2 is connected in parallel on the two ends of battery E as automatic shunt circuit.The circuit of LED 1 and resistance R 2 series connection is connected in parallel on the D1 two ends.LED1 can adopt Ф 3mm green, and LED2 can adopt Ф 8mm redness.
Energized, at the M point for just, the N point is in negative this half cycle, LED 1 ends, rectifier diode D1 conducting, and the electric current route is M point → diode pipe D1 → be recharged pond E1 → resistance R 1 → N point, battery is a charging process, at this moment, because the voltage of battery E is lower, LED 2 not conductings.For negative, the N point is in this half cycle just at the M point, and diode D1 ends, LED 1 conducting, and the electric current route is N point → resistance R 1 → be recharged pond E1 → LED 1 → resistance R 2 → M point.In this half cycle, luminous as the LED 1 of indicator light, battery E is a discharge process, but because the R2 resistance is bigger, so electric current is very little, does not influence the charging of battery E.
When being recharged pond E voltage and then gradually being elevated to the 1.4V left and right sides, as the LED 2 beginning build-ups of luminance of automatic shunt circuit, and along with the rising of battery E voltage, the electric current that flows through LED 2 is satisfied cumulative adding.Because the effect of resistance R 1, the charging current that flows through battery E1 also just reduces along with the rising of the voltage of battery E1.
For this circuit, have only as battery E and put into the charging deck and contact when good, take over power supply, LED 1 is just understood luminous, and indication circuit has entered charged state.LED2 has not only played automatic shunting action, also can be used as the voltage indicator lamp of battery E, is contained in charging box front, and it strengthens in the rising of brightness with the voltage of battery E.
In sort circuit, shunt circuit essence is exactly a voltage switch automatically.It can be according to the voltage swing that is recharged the pond, and selection is to adopt single light-emitting diode, still adopts other the components and parts that possess the voltage switch performance, constitutes as voltage stabilizing didoe.
Circuit and Fig. 1 shown in Figure 2 are basic identical, only be recharged pond E and be parallel with the circuit that resistance R 3 and diode D2 connect.Like this, charger has just possessed the function of removal battery E " memory effect ".After battery E puts into the charging deck, just begin by R3 and D2 discharge.We can temporarily disconnect power supply, waited a period of time after because the further discharge of battery,, take over power supply again to battery E charging when its " memory effect " when removing, so just guaranteed the validity of charging more.Because the R3 resistance is bigger, so with when charging, the circuit that R3 and D2 constitute can be considered inoperative, the situation that charging current changes is identical with circuit shown in Figure 1.Diode D2 effect is: make LED 1 can reflect correctly whether battery enters charging process.
The charger construction that the utility model is released is simple, can comparatively ideal alkaline battery and various rechargeable battery be charged, and is safe and effective through trying out it, and a joint alkaline battery is used tens of times repeatedly.
Claims (4)
1. the utility model charger is by the charging box, battery deck and injection casing are formed, power transformer B, rectifier diode D1, resistance R 1 all is contained in the charging box, and LED 1 is contained in charging box front, the 220V civil power is through transformer B step-down, D1 halfwave rectifier, R1 current limliting form charges to battery E, it is characterized in that: be recharged pond E and be parallel with an automatic shunt circuit.
2. by the described charger of claim 1, it is characterized in that: the automatic shunt circuit in parallel with being recharged pond E is to be made of LED 2.
3. by the described charger of claim 1, it is characterized in that: be parallel with the circuit that resistance R 2 and LED 1 are connected with rectifier diode D1, LED1 is luminous as charging indicator light.
4. by the described charger of claim 1, it is characterized in that: be parallel with the circuit that resistance R 3 and diode D2 connect with being recharged pond E, this circuit is used to remove " memory effect " of battery E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239256 CN2218988Y (en) | 1995-02-27 | 1995-02-27 | electric charger capable of automatic regulating charging current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239256 CN2218988Y (en) | 1995-02-27 | 1995-02-27 | electric charger capable of automatic regulating charging current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218988Y true CN2218988Y (en) | 1996-01-31 |
Family
ID=33881075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95239256 Expired - Fee Related CN2218988Y (en) | 1995-02-27 | 1995-02-27 | electric charger capable of automatic regulating charging current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218988Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218650A (en) * | 2014-10-08 | 2014-12-17 | 黄鹂 | General charger for flashlight and mobile phone battery |
| CN105828481A (en) * | 2016-05-17 | 2016-08-03 | 黎辉 | Half-wave shunt LED lamp driving device |
| CN108591871A (en) * | 2016-08-06 | 2018-09-28 | 胡玥 | A kind of LED light with wireless charging function |
-
1995
- 1995-02-27 CN CN 95239256 patent/CN2218988Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218650A (en) * | 2014-10-08 | 2014-12-17 | 黄鹂 | General charger for flashlight and mobile phone battery |
| CN105828481A (en) * | 2016-05-17 | 2016-08-03 | 黎辉 | Half-wave shunt LED lamp driving device |
| CN108591871A (en) * | 2016-08-06 | 2018-09-28 | 胡玥 | A kind of LED light with wireless charging function |
| CN108662513A (en) * | 2016-08-06 | 2018-10-16 | 胡玥 | A kind of LED light with wireless charging function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |