CN88211445U - Safety charger for crome-nickel cell - Google Patents
Safety charger for crome-nickel cell Download PDFInfo
- Publication number
- CN88211445U CN88211445U CN 88211445 CN88211445U CN88211445U CN 88211445 U CN88211445 U CN 88211445U CN 88211445 CN88211445 CN 88211445 CN 88211445 U CN88211445 U CN 88211445U CN 88211445 U CN88211445 U CN 88211445U
- Authority
- CN
- China
- Prior art keywords
- circuit
- charging
- diode
- charger
- charge
- 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.)
- Withdrawn
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a safety charger provided with a circuit for displaying charging degree, a circuit for automatically testing and displaying safety state and a circuit for preventing overcharging. The safety charger has high charge speed, stable charge current and simple circuit, and the safety charger can automatically charge at different levels and speeds. Quite different energy of cells before charging can be the same after charging.
Description
The present invention is the ickel-cadmium cell safe charging device that is used for the ickel-cadmium cell safe charging.
The ickel-cadmium cell charger of prior art, employing be the pulsating voltage charging modes of full-wave rectification.There are not level of charge indicating circuit and overcharge protection circuit.Patent CN 85 202874U have proposed a kind of minitransitor current stabilization charging device.This device charges with all-wave pulsation and with the electric current of little galvanic gaps discharge.This device does not have level of charge display circuit and overcharge protection circuit.Patent CN 85 1 09573 has proposed a kind of high-speed charger for hermetically-sealed cadmium-nickel cells.But this machine complex structure, inconvenience is promoted.
The objective of the invention is to: at the problems referred to above, propose a kind of simple in structurely, charging rate is fast, the ickel-cadmium cell safe charging device that can show level of charge and have reliable anti-overcharge ability.
Circuit structure of the present invention as shown in drawings.B among the figure
1Be power transformer, D
1～D
4, C
1, C
2Be rectification and filter circuit.R
1, R
2, D
5, W
1, T
1Be the adjustable constant-flow source circuit.LED
1, R
3Be the energising indicating circuit.D
6～D
13For bypass circuit is anti-overcharge circuit.LED
2～LED
5Be level of charge indication light-emitting diode.
Operation principle of the present invention is as follows: the 220V AC power obtains the bigger direct voltage of 10V left and right sides ripple coefficient through transformer and rectification and filter circuit.This voltage is through R
1To voltage-stabiliser tube D
5Power supply obtains the very little constant voltage of ripple coefficient, and this voltage is through upper limit resistance R
2And Current Regulation potentiometer W
1Give triode T
1Base supply I is provided
b, can get constant set electrode current I through the triode amplification
CThis electric current flows through the identical terminating circuit of level Four successively.Each terminating circuit is composed in parallel by three parts: be connected in series the bypass circuit that forms by two diodes 1..2. the level of charge indicating circuit that constitutes of LED.3. battery socket.Various terminating circuits all have four kinds of operating states: 1. vacant seat state: when battery does not insert, and I
C(this value is with I to flow through the voltage drop that produces about 1.6V through bypass circuit
CDifference slightly about); LED is in the brightest state under this electric current.This moment, LED played bypass circuit self check effect, guaranteed safe charging.2. full-speed state: after inserting battery, if the battery pressure drop is less than 1.4V, I
CBasically the battery of all flowing through; LED does not work, and expression is in charged state at full speed at this moment.3. deceleration regime: the battery pressure drop is greater than 1.4V and increase gradually, and the electric current of the bypass of flowing through increases gradually, and charging current reduces gradually, and charging rate slows down gradually; LED is blast gradually, and expression is in the deceleration charged state at this moment.4. guard mode: after battery trends towards about 1.6V, I
CBasically all flow through by bypass circuit, LED brightness is near the vacant seat state, and expression has entered the safeguard protection state, and charging process finishes.
This shows that this charger has been realized when the energy content of battery is low with the constant current large current charge; When the approaching last charging current that reduces gradually in limited time of the energy content of battery; After the energy content of battery reached the upper limit, battery stopped charging.This is a kind of ideal charging mode that can reach quick charge and guarantee battery life.(see also great electricity work " performance of nickel cadmium cell and application ", be stated from " CYBERSPACE " 1987,10 phases)
The present invention has following advantage: can show level of charge 1..2. safe condition self check indication is arranged.3. can effectively prevent to overcharge.4. charging rate is fast.5. energy reaches unanimity after making the battery charge that energy differs greatly before charging.6. can fluid drive charge, charging current is steady.7. circuit is simple, and cost is low, is convenient to produce in batches.
Accompanying drawing is depicted as the typical circuit with four terminating circuits, is suitable for ickel-cadmium cell four joints of 500 Milliampere Hours, and its maximum charging current is 400～800mA, and charging quickly speed is 45～90 minutes.
Each component parameter is among the figure: B
1Pay side's output 8～9V/500～1000mA; R
1390 Ω; R
20～1K Ω; C
1470F/16V～3300F/16V; C
20～0.01F; D
52CW3～6V; D
1～D
4, D
6～D
13IN4001; LED
1～LED
52EF101A; T
1D651.
D
5Two ends also can and a last potentiometer, with D
5Offer W after the last pressure drop dividing potential drop
1R
2, so that debugging in batches.
W
1Available several resistance add diverter switch and replace.
Energising indicating circuit R
3, LED
1Can cancel need not, be connected in parallel on C after also can connecting
1On.
Terminating circuit number of the present invention, quilt fills the ickel-cadmium cell capacity and maximum charging current all can be selected as required, just can as long as device parameters made an amendment slightly.
Claims (3)
1, a kind of ickel-cadmium cell safe charging device comprises rectification circuit, constant-current source circuit, power indicating circuit, it is characterized in that also comprising a multistage terminating circuit, and every grade of terminating circuit is made up of three parts.
2, according to claim 1 described charger, it is characterized in that the diode of every grade of terminating circuit by two forward serial connections, a light-emitting diode and one pair of battery socket compose in parallel.
3, according to claim 1 described charger, the anode, the anode of light-emitting diode and the anode of battery socket that it is characterized in that the diode after two forwards serial connection of every grade of terminating circuit link, and negative terminal, the negative terminal of light-emitting diode and the negative terminal of battery socket of the diode after two forwards serial connections link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211445 CN88211445U (en) | 1988-02-15 | 1988-02-15 | Safety charger for crome-nickel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211445 CN88211445U (en) | 1988-02-15 | 1988-02-15 | Safety charger for crome-nickel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88211445U true CN88211445U (en) | 1988-12-28 |
Family
ID=4844847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88211445 Withdrawn CN88211445U (en) | 1988-02-15 | 1988-02-15 | Safety charger for crome-nickel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88211445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957195A (en) * | 2012-11-30 | 2013-03-06 | 费新华 | Battery charge controlling circuit |
| CN104052139A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Battery charger with protection function |
-
1988
- 1988-02-15 CN CN 88211445 patent/CN88211445U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957195A (en) * | 2012-11-30 | 2013-03-06 | 费新华 | Battery charge controlling circuit |
| CN102957195B (en) * | 2012-11-30 | 2015-05-20 | 国网浙江省电力公司丽水供电公司 | Battery charge controlling circuit |
| CN104052139A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Battery charger with protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |