CN202817848U - Apparatus for eliminating memory effect of rechargeable battery - Google Patents
Apparatus for eliminating memory effect of rechargeable battery Download PDFInfo
- Publication number
- CN202817848U CN202817848U CN 201220512493 CN201220512493U CN202817848U CN 202817848 U CN202817848 U CN 202817848U CN 201220512493 CN201220512493 CN 201220512493 CN 201220512493 U CN201220512493 U CN 201220512493U CN 202817848 U CN202817848 U CN 202817848U
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- nickel
- rechargeable battery
- cadmium
- memory effect
- circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an apparatus for eliminating the memory effect of a rechargeable battery, characterized by comprising a 1.2V nickel-cadmium rechargeable battery, an intermittent oscillation and discharging circuit and a state indication circuit. If the nickel-cadmium rechargeable battery is not thoroughly discharged in the process of use, the memory effect of the battery is generated, and if the memory effect is accumulated for a long time, the nickel-cadmium rechargeable battery cannot be used normally. The apparatus for eliminating the memory effect of the rechargeable battery can enable the nickel-cadmium rechargeable battery to be thoroughly discharged; and the discharging circuit for eliminating the memory effect can enable the nickel-cadmium rechargeable battery to be discharged to reach 0.7-0.8 V, thereby ensuring the correct discharging of the nickel-cadmium rechargeable battery, not inverting the polarity of the nickel-cadmium rechargeable battery, having a certain repairing effect on the nickel-cadmium rechargeable battery with the performance declined ahead of time or with the performance lower, and prolonging the service life of the nickel-cadmium rechargeable battery.
Description
Technical field
The utility model belongs to electronics and rechargeable battery discharge technology field, relates to a kind of device of eliminating the rechargeable battery memory effect.
Background technology
If Ni-Cd nickel-cadmium in use discharges not thorough, then can produce memory effect, cause the Ni-Cd nickel-cadmium charging once, original electric weight will reduce a bit, and memory effect will make Ni-Cd nickel-cadmium normally use through long-term accumulation.Eliminate this memory effect of Ni-Cd nickel-cadmium, adopt the device of elimination rechargeable battery memory effect described in the utility model, Ni-Cd nickel-cadmium can thoroughly be discharged.If do not take the measure of discharging especially, Ni-Cd nickel-cadmium has the risk of overdischarge, might make the generation polarity inversion of Ni-Cd nickel-cadmium.The discharge circuit of the elimination memory effect of the utility model design can make Ni-Cd nickel-cadmium be put into 0.7～0.8V, so both guaranteed the correct discharge of Ni-Cd nickel-cadmium, the phenomenon of Ni-Cd nickel-cadmium polarity inversion also can not occur, can certain repair be arranged to performance " early ageing " or the low Ni-Cd nickel-cadmium of performance, make it postpone useful life.
The device that below describes elimination rechargeable battery memory effect described in the utility model in detail related technology contents in implementation process.
The utility model content
Goal of the invention and beneficial effect: not thorough if Ni-Cd nickel-cadmium in use discharges, then can produce memory effect, cause the Ni-Cd nickel-cadmium charging once, original electric weight will reduce a bit, and memory effect will make Ni-Cd nickel-cadmium normally use through long-term accumulation.Eliminate this memory effect of Ni-Cd nickel-cadmium, adopt the device of elimination rechargeable battery memory effect described in the utility model, Ni-Cd nickel-cadmium can thoroughly be discharged.But if do not take the measure of discharging especially, Ni-Cd nickel-cadmium has the risk of overdischarge, might make the generation polarity inversion of Ni-Cd nickel-cadmium.The discharge circuit of the elimination memory effect of the utility model design can make Ni-Cd nickel-cadmium be put into 0.7～0.8V, so both guaranteed the correct discharge of Ni-Cd nickel-cadmium, the phenomenon of Ni-Cd nickel-cadmium polarity inversion can not occur, can certain repair be arranged to performance " early ageing " or the low Ni-Cd nickel-cadmium of performance, make it postpone useful life.
Circuit working principle: after the circuit of the device of eliminating the rechargeable battery memory effect connects the 1.2V Ni-Cd nickel-cadmium, Ni-Cd nickel-cadmium makes the base stage of NPN transistor VT1-emitter conducting through the L1 winding of resistance R 1 and high frequency transformer T, NPN transistor VT1 is because of the very fast conducting of the positive feedback effect of high frequency transformer T winding, after NPN transistor VT1 conducting, be tending towards stable state (discharge), at this moment the AC impedance of two windings of high frequency transformer T disappears, D.C. resistance is almost 0, at this moment voltage is very low between the Collector Emitter of NPN transistor VT1, can not make LED luminous.When the base voltage of NPN transistor VT1 is lower than NPN transistor turn-on threshold voltage 0.7V, so that NPN transistor VT1 cut-off.The moment of NPN transistor VT1 cut-off is because the energy storage in the L2 winding of high frequency transformer T and the addition of Ni-Cd nickel-cadmium voltage make LED luminous.Between the LED light emission period, the L1 winding of high frequency transformer T has again electric current to flow through, and makes NPN transistor VT1 again because of the positive feedback conducting of high frequency transformer T, the generation intermittent oscillation of so going round and beginning again, its frequency of oscillation＜1kHz.During intermittent oscillation and discharge circuit intermittent oscillation, the L2 winding of high frequency transformer T savings electric energy during NPN transistor VT1 conducting, at this moment LED is not luminous.When NPN transistor VT1 ended, the energy storage of L2 winding and the Ni-Cd nickel-cadmium Voltage Series of high frequency transformer T made LED luminous, and Ni-Cd nickel-cadmium is able to intermittent discharge, along with its voltage of nickel-cadmium cell discharging also reduces gradually.When Ni-Cd nickel-cadmium voltage discharge voltage is lower than NPN transistor turn-on threshold voltage 0.7V, LED will be no longer luminous, and the Ni-Cd nickel-cadmium discharge is namely accused and finished.
Technical scheme: eliminate the device of rechargeable battery memory effect, it is comprised of 1.2V Ni-Cd nickel-cadmium, intermittent oscillation and discharge circuit, condition indication circuit, and its feature comprises:
Intermittent oscillation and discharge circuit: formed by NPN transistor VT1, resistance R 1 and high frequency transformer T, the base stage of NPN transistor VT1 connects the L1 Motor Winding Same Name of Ends of high frequency transformer T, the L1 winding different name end of high frequency transformer T is by the anodal VCC of resistance R 1 connection circuit, the collector electrode of NPN transistor VT1 connects the L2 winding different name end of high frequency transformer T, the anodal VCC of the L2 Motor Winding Same Name of Ends connection circuit of high frequency transformer T, the emitter connection circuit ground GND of NPN transistor VT1;
1.2V the anodal VCC of the anodal connection circuit of Ni-Cd nickel-cadmium, the negative pole of 1.2V Ni-Cd nickel-cadmium links to each other with circuit ground GND.
Condition indication circuit: the positive pole of LED connects the collector electrode of NPN transistor VT1, the negative pole connection circuit ground GND of LED.
Description of drawings
Accompanying drawing 1 is in an embodiment used circuit working schematic diagram of Ni-Cd nickel-cadmium memory effect cancellation element.
Embodiment
According to circuit working schematic diagram and the description of drawings of eliminating the device of rechargeable battery memory effect shown in the accompanying drawing 1, and according to the annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in the execution mode requires to implement to realize the utility model.
Components and parts title and important technological parameters thereof
The making of high frequency transformer T: select ￠ 8 " worker " type high frequency magnetic core, L1 winding use ￠ 0.21mm(36 number) the enamelled wire layering is flat around 30 circles, the L2 winding is put down around 15 circles with the layering of ￠ 0.21mm enamelled wire, notes each Motor Winding Same Name of Ends of sign, must fill up between the winding and use insulating material;
VT1 is NPN transistor, and the model of selecting is 2SC9013(or BC547), require β 〉=160;
The resistance of resistance R 1 is 150 Ω;
LED is light-emitting diode, and can select diameter is ￠ 5 red light emitting diodes.
Circuit production main points and circuit debugging
Very simple because of the circuit structure of the device of eliminating the rechargeable battery memory effect, comparison is easy, as long as the components and parts performance of using is intact, the physical connection of components and parts is correct generally speaking, circuit does not need to carry out any debugging and can work;
After device was connected the 1.2V Ni-Cd nickel-cadmium, the LED in the condition indication circuit was not lighted, and illustrates that intermittent oscillation circuit does not have starting of oscillation, the L2 winding two ends of high frequency transformer T can be exchanged and try it;
If after the Ni-Cd nickel-cadmium discharge certain electric weight arranged still, can use this device that Ni-Cd nickel-cadmium is discharged again;
Through this method discharge process, the Ni-Cd nickel-cadmium memory effect can thoroughly be eliminated, and can make Ni-Cd nickel-cadmium substantially recover original nominal capacity.
Claims (2)
1. device of eliminating the rechargeable battery memory effect, it is comprised of 1.2V Ni-Cd nickel-cadmium, intermittent oscillation and discharge circuit, condition indication circuit, and its feature comprises:
Described intermittent oscillation and discharge circuit are comprised of NPN transistor VT1, resistance R 1 and high frequency transformer T, the base stage of NPN transistor VT1 connects the L1 Motor Winding Same Name of Ends of high frequency transformer T, the L1 winding different name end of high frequency transformer T is by the anodal VCC of resistance R 1 connection circuit, the collector electrode of NPN transistor VT1 connects the L2 winding different name end of high frequency transformer T, the anodal VCC of the L2 Motor Winding Same Name of Ends connection circuit of high frequency transformer T, the emitter connection circuit ground GND of NPN transistor VT1;
The anodal VCC of the anodal connection circuit of described 1.2V Ni-Cd nickel-cadmium, the negative pole of 1.2V Ni-Cd nickel-cadmium links to each other with circuit ground GND.
2. the device of elimination rechargeable battery memory effect according to claim 1, it is characterized in that: the positive pole of LED connects the collector electrode of NPN transistor VT1 in the condition indication circuit, the negative pole connection circuit ground GND of LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512493 CN202817848U (en) | 2012-10-08 | 2012-10-08 | Apparatus for eliminating memory effect of rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512493 CN202817848U (en) | 2012-10-08 | 2012-10-08 | Apparatus for eliminating memory effect of rechargeable battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817848U true CN202817848U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220512493 Expired - Fee Related CN202817848U (en) | 2012-10-08 | 2012-10-08 | Apparatus for eliminating memory effect of rechargeable battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN202817848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275696A (en) * | 2017-05-05 | 2017-10-20 | 上海空间电源研究所 | The in-orbit charging/discharging thereof for subtracting memory effect of spacecraft Cadmium Nickel Battery |
-
2012
- 2012-10-08 CN CN 201220512493 patent/CN202817848U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275696A (en) * | 2017-05-05 | 2017-10-20 | 上海空间电源研究所 | The in-orbit charging/discharging thereof for subtracting memory effect of spacecraft Cadmium Nickel Battery |
| CN107275696B (en) * | 2017-05-05 | 2019-09-17 | 上海空间电源研究所 | The in-orbit charging/discharging thereof for subtracting memory effect of spacecraft Cadmium Nickel Battery |
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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: 20130320 Termination date: 20131008 |