CN2276222Y - Voltage feedback charger - Google Patents
Voltage feedback charger Download PDFInfo
- Publication number
- CN2276222Y CN2276222Y CN96204548U CN96204548U CN2276222Y CN 2276222 Y CN2276222 Y CN 2276222Y CN 96204548 U CN96204548 U CN 96204548U CN 96204548 U CN96204548 U CN 96204548U CN 2276222 Y CN2276222 Y CN 2276222Y
- Authority
- CN
- China
- Prior art keywords
- battery
- resistance
- led
- circuit
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Abstract
The utility model discloses a voltage feedback charger which is provided with a charge control circuit which is composed of a feedback circuit and a by-pass circuit, wherein, the feedback circuit is formed by in series connecting a diode D5 and resistors R2 and R3, and is connected with a battery E in parallel. The by-pass circuit is composed of a light emitting diode LED 2 and a triode T, and is connected with a light emitting diode LED 1 and the battery E in parallel. The triode T is in an off state when a battery is charged normally. Electric current in circuits mainly flow across the battery E to charge the battery. The triode T is conducted when the battery E is fully charged, and the electric current in the circuits passes through the by-pass circuit. The charger displays the filled battery, and automatically stops charging when the battery is filled, so that the service life of the battery can be extended.
Description
The utility model relates to a kind of Voltage Feedback formula charger, is used for nickel-cadmium cell is charged.
Its circuit of the charger that in the prior art nickel-cadmium cell is charged as shown in Figure 2, by transformer L, diode D
1～D
4, resistance R
1And LED
1Form.220 volts of civilian alternating currents are transformed into low-voltage through transformer L, and by diode D
1～D
4After the bridge rectifier of forming is rectified into direct current, through current-limiting resistance R
1Show LED with charging
1Give battery E charging.Because this charger, whether battery be not full of show, usually cause undercharge or overcharge.This not only influences the normal use of battery, and more seriously: when overcharging, the battery that is full of still has very big electric current to pass through, and causes that battery heating, interior pressure increase, and often overcharging easily makes battery drain, reduces the useful life of battery.
The purpose of this utility model provides a kind ofly to be had battery and is full of demonstration, and stops the Voltage Feedback formula charger to battery charge after battery is full of automatically, to improve the useful life of battery.
The purpose of this utility model is to realize like this.
A kind of Voltage Feedback formula charger, its charging circuit is by transformer L, triode D
1～D
4The bridge rectifier, the current-limiting resistance R that form
1Show LED with charging
1Form; It also has the charging control circuit that is made of feedback circuit and bypass resistance, and feedback circuit is by diode D
5, resistance R
2, R
3The order serial connection forms and is in parallel with battery E, and bypass resistance is by LED
2Form and and LED with triode T
1With battery E parallel connection, the collector electrode of triode T and LED
2Link to each other, emitter and the negative terminal of battery E links to each other, base stage is connected on feedback circuit resistance R
2With R
3Between; Resistance R
2With R
3The ratio of resistance be 3＜R
3/ R
2＜10.
LED
1And LED
2On respectively be parallel with a resistance R
4
Below in conjunction with drawings and Examples the utility model is described in detail.
Fig. 1 is the circuit theory diagrams of the utility model Voltage Feedback formula charger.
Fig. 2 is the circuit theory diagrams of charger in the prior art.
The circuit of the utility model charger comprises charging circuit and charging control circuit two parts as shown in Figure 1.Charging circuit is by transformer L, triode D
1～D
4Bridge rectifier, current-limiting resistance R that (model is IN4001) formed
1(60 Ω) and red light emitting diodes LED
1Form.220 volts of power supplys are transformed into low-voltage through transformer L, and by diode D
1～D
4The bridge rectifier of forming is rectified into direct current, through current-limiting resistance R
1Charge to No. 5, a joint or No. 7 rechargeable battery E with LED 1.Charging control circuit comprises feedback circuit and bypass resistance two parts.Feedback circuit is by diode D
5(IN4001), resistance R
2(100 Ω), R
3(500 Ω) order is in series and is in parallel with battery E, and bypass resistance is by green LED LED
2Form and and LED with triode T (9014)
1With battery E parallel connection.The collector electrode of triode T and LED
2Link to each other, emitter and the negative terminal of battery E links to each other, base stage is connected on feedback circuit resistance R
2With R
3Between.Resistance R
2With R
3The ratio R of resistance
3/ R
2=5.
Because diode D
5, resistance R
2, R
3The feedback circuit of forming is in parallel with battery E, and the voltage of battery E directly feeds back on this circuit in the charging process.Diode D
5Dynamic electric resistor very little, its pressure drop is stablized constantly substantially under the conducting situation, model is the diode of IN4001, pressure drop is about 0.64 volt.Again because resistance R
3Resistance value ratio R
2Much bigger, the variation of battery E voltage mainly is added in R
3On.E charges normal when battery, voltage (the rechargeable battery normal working voltage is 1.25 volts) below 1.30 volts time the, resistance R
3On voltage be lower than 0.6 volt.The base stage of triode T is connected on resistance R
2With R
3Between, resistance R
3On voltage be triode T base potential.Because triode T not conducting when base potential is lower than 0.6 volt is therefore by diode (LED)
2The bypass resistance of forming with triode T is in cut-off state.Electric current in the circuit battery E that mainly flows through charges the battery.At this moment, LED
1Glow, pilot cell E is in normal charging condition.E is full of when battery, after cell voltage surpasses 1.3 volts, along with the increase of battery E voltage, resistance R
3On voltage rise thereupon, work as resistance R
3On voltage when surpassing 0.6 volt, triode T conducting.Because the amplification of triode, the overwhelming majority of electric current is by diode (LED) in the circuit
2The bypass resistance of forming with triode T passes through, and the electric current of the battery E that flows through is very little, plays the effect of protection battery.While green LED LED
2Bright, pilot cell E is full of.
LED
1And LED
2On respectively be parallel with a resistance R
4(50 Ω) plays shunting action, makes through diode (LED)
1And LED
2Electric current in rated range, to prolong its useful life.
Only comprise a charhing unit in the foregoing description, the utility model also can be made of two or more serial or parallel connections charhing unit in the DC circuit after rectification.
Compared with prior art, the utility model voltage feedback charger has battery and is full of Show, after battery is full of, automatically stop to battery charging, the use longevity that can improve battery Life.
Claims (2)
1. Voltage Feedback formula charger, its charging circuit is by transformer L, diode D
1～D
4The bridge rectifier, the current-limiting resistance R that form
1Show LED 1 composition with charging, it is characterized in that: it has the charging control circuit that is made of feedback circuit and bypass resistance, and feedback circuit is by diode D
5, resistance R
2, R
3The order serial connection forms and is in parallel with battery E, and bypass resistance is by LED
2Form and and LED with triode T
1With battery E parallel connection, the collector electrode of triode T and LED
2Continuous, emitter links to each other with the negative terminal of battery E, and base stage is connected on the resistance R of feedback circuit
2With R
3Between, resistance R
2With R
3The ratio of resistance be 3＜R
3/ R
2＜10.
2. charger according to claim 1 is characterized in that described LED
1And LED
2On respectively be parallel with a resistance R
4
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96204548U CN2276222Y (en) | 1996-04-22 | 1996-04-22 | Voltage feedback charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96204548U CN2276222Y (en) | 1996-04-22 | 1996-04-22 | Voltage feedback charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2276222Y true CN2276222Y (en) | 1998-03-11 |
Family
ID=33889763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96204548U Expired - Fee Related CN2276222Y (en) | 1996-04-22 | 1996-04-22 | Voltage feedback charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2276222Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335461B (en) * | 2007-06-27 | 2011-11-02 | 联想（新加坡）私人有限公司 | Charging system, electronic device and charging method |
| CN111687081A (en) * | 2020-06-03 | 2020-09-22 | 国网黑龙江省电力有限公司电力科学研究院 | Matrix type charging tray self-powered cleaning device |
-
1996
- 1996-04-22 CN CN96204548U patent/CN2276222Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335461B (en) * | 2007-06-27 | 2011-11-02 | 联想（新加坡）私人有限公司 | Charging system, electronic device and charging method |
| CN111687081A (en) * | 2020-06-03 | 2020-09-22 | 国网黑龙江省电力有限公司电力科学研究院 | Matrix type charging tray self-powered cleaning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAOSHAN IRON & STEEL CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANGHAI BAOSHAN STEEL( GROUP ) CO.,LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Patentee after: Baoshan Iron & Steel Co., Ltd. Address before: 200122 No. 1, middle front road, Baoshan District Shanghai factory Patentee before: Shanghai Baosteel (Group) Company |
|
| 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 |