CN202488196U - High-performance constant-current charger - Google Patents
High-performance constant-current charger Download PDFInfo
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- CN202488196U CN202488196U CN2012201405872U CN201220140587U CN202488196U CN 202488196 U CN202488196 U CN 202488196U CN 2012201405872 U CN2012201405872 U CN 2012201405872U CN 201220140587 U CN201220140587 U CN 201220140587U CN 202488196 U CN202488196 U CN 202488196U
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Abstract
The utility model relates to a high-performance constant-current charger. The charger comprises a 220V alternating-current power supply, an alternating-current transformer B, a full-bridge rectification circuit, a filtering circuit, a constant-current source circuit, a fast and slow charging circuit, a constant-current charging state indicating circuit and a charging output terminal. According to the high-performance constant-current charger, an integrated voltage-stabilizing blocks (LM317T) with adjustable three ends forms a constant-current source, and an output charging current value is accurate and constant, thus facilitating a user to control charging time in a charging process of a chargeable battery; the charging output terminal of the charger is not afraid of short circuit, thus being especially suitable for extensive use of the user; a selector switch SW arranged in the circuit of the charger allows charging current to be in two levels; one light-emitting diode is arranged at the two ends of two silicon rectification diodes in the charging circuit in a bridging manner, thus solving the charging state indicating difficulty of the chargeable battery; and the charger has a certain restoration function on the chargeable battery with early performance failure or poor performance.
Description
Technical field
The utility model belongs to rechargeable battery charging technique field, is about a kind of high-performance constant current charge device.
Background technology
The kind of the charger mode of rechargeable battery is a lot, and technology commonly used has modes such as unsteady flow level pressure, variable voltage and variable current, pulsed, constant current level pressure.Practice shows: NI-G or Ni-MH battery best with the current constant mode charging effect.But mostly the charger of selling on the market is to manufacture in a rough and slipshod way, and does not reach the constant current charge specification requirement of rechargeable battery at all.Several kinds of chargers on the analysis market, some circuit is only used a 9V wattage transformer, carries out using a resistance current-limiting charge again after the halfwave rectifier with a diode.Have on current-limiting resistance and connect a light-emitting diode and carry out charged state indication; Charging current is about 20～70mA; And the size of charging current also can receive civil power alternating voltage and the influence of rechargeable battery state; Constant current charge uses the charger simple and easy inferior of this type to charge as if rechargeable battery for a long time far from, and the life-span of rechargeable battery will shorten dramatically.
The described high-performance constant current charge of the utility model device is formed constant-current source with three end adjustable voltage-regulating ic pieces (LM317T); Make that the current values of output is constant, accurate; So in the charging process of rechargeable battery, made things convenient for the accurate control of user to the charging interval;
This charger charging lead-out terminal is not afraid of short circuit, so be particularly suitable for user's extensive use;
Add 1 single-pole single-throw(SPST selector switch SW in the circuit of this charger, make charging current become two grades;
2 silicon rectifier diodes of serial connection are with the pressure drop of generation >=1.5V in the charging output loop; For light-emitting diode provides operating voltage; In the mode of 1 light-emitting diode of across of 2 silicon rectifier diodes, well solved a rechargeable battery charged state indication difficult problem.
Below specify the described high-performance constant current charge of the utility model device related relevant technologies content in implementation process.
The utility model content
Goal of the invention and beneficial effect: the described high-performance constant current charge of the utility model device is formed constant-current source with three end adjustable voltage-regulating ic pieces (LM317T); Make that the charging current numerical value of output is accurate, constant; So in the rechargeable battery charging process, made things convenient for the control of user to the charging interval; This charger charging lead-out terminal is not afraid of short circuit, so be particularly suitable for user's extensive use; 1 single-pole single-throw(SPST selector switch SW is set in this charger circuit, makes charging current become two grades; 2 silicon rectifier diodes of serial connection in the charging output loop for light-emitting diode provides >=the 1.5V operating voltage, in the mode of 1 light-emitting diode of across of 2 silicon rectifier diodes, have solved a rechargeable battery charged state indication difficult problem; This charger has the certain repairing effect to performance " early ageing " or the low rechargeable battery of performance.
Technical characterictic: high-performance constant current charge device; It comprises that 220V AC power, AC transformer B, full bridge rectifier and filter circuit, constant-current source circuit reach soon charging circuit, constant current charge condition indication circuit and charging lead-out terminal at a slow speed, is characterized in that:
Constant-current source circuit reaches soon charging circuit at a slow speed: be made up of the adjustable integrated package of pressure-stabilizing IC1 of three ends, resistance R 1, resistance R 2 and selector switch SW; The cathode output end of the 3rd pin input termination full-bridge rectification of three ends are adjustable integrated package of pressure-stabilizing IC1; The end of the 2nd pin output connecting resistance R1 of three ends are adjustable integrated package of pressure-stabilizing IC1 and an end of resistance R 2; The 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of another termination three ends of resistance R 2; An end of switch SW is selected in the other end selecting of resistance R 1, the 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of another termination three ends of selector switch SW;
Constant current charge condition indication circuit: form by silicon rectifier diode D1, silicon rectifier diode D2 and LED; The positive pole of LED connects the positive pole of silicon rectifier diode D1 and the 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of three ends; Silicon rectifier diode D1 negative pole links to each other with the positive pole of silicon rectifier diode D2, and the negative pole of LED connects the negative pole of silicon rectifier diode D2;
The charging lead-out terminal: positive terminal of rechargeable battery links to each other with the negative pole of the negative pole of silicon rectifier diode D2 and LED, and negative terminals of rechargeable battery links to each other with the cathode output end of full-bridge rectification and circuit ground GND.
The circuit working principle: the utility model core device content is to be connected into a constant-current source with the adjustable integrated package of pressure-stabilizing LM317T of three ends.LM317T makes output hold voltage of ADJ to exceed 1.25V than its adjustment under the enough direct voltage situation of input, the adjustment end ADJ of LM317T directly be recharged the pond and link to each other; But the internal resistance of adjustment end ADJ is very big; Under normal circumstances the electric current of adjustment end ADJ can not surpass 50 μ A, thus can regard approximate open circuit as, but it can be taken a sample to direct voltage; LM317T brings up to the high 1.25V than adjustment end ADJ with the voltage of output; Being connected across so on the resistance of output and ADJ end will have the electric current of 1.25V/26 Ω=50mA to flow through (when selecting switch SW to break off, resistance R 2 is 26 Ω), and this electric current just carries out constant current charge to rechargeable battery; According to the component parameters that embodiment gave, when selector switch SW broke off, the constant current charge electric current was about 50mA; Selector switch SW is about 155mA when closed; Be connected on the next size that can change the constant current charge current value of resistance of output with the adjustment end ADJ of LM317T through change.
Description of drawings
Accompanying drawing 1 is the used in an embodiment circuit working schematic diagram of high-performance constant current charge device; Switch SW is charging option switch at a slow speed soon.
Embodiment
Below in conjunction with accompanying drawing 1 and description of drawings, and implement to realize the utility model according to components and parts subordinate list and following specification requirement.
Main components and parts title and technical parameter
| Element number | The components and parts title | Leading indicator | Quantity | Remarks |
| IC1 | LM317T or LM338 | T0-220 or T0-3 encapsulation | 1 | Positive polarity output |
| D1～D2 | 1N4001 (silicon rectifier diode) | 1A/50V | 2 | Or select 1N4002 |
| LED | Red light emitting diodes | ￠5 | 1 | |
| C1 | Electrochemical capacitor | 1000μF/25V | 1 | Vertical |
| R1 | Metalfilmresistor | 11Ω/1W | 1 | |
| R2 | Metalfilmresistor | 26Ω/1W | 1 |
Circuit production main points and circuit debugging
The selection of AC transformer B: the power of transformer is 3W, and the voltage of secondary coil is 10V;
Three end adjustable voltage-regulating ic pieces: the LM338 that must select anodal output plastic packaging LM317T or metallic packaging for use;
Heat abstractor: three end adjustable voltage-regulating ic pieces (LM317T) should install the radiator of appropriate size additional;
Constant current value adjustment: can be on the next door of resistance R 1 or resistance R 2 and resistance that to connect 1 resistance be 39～51 Ω, reach requirement with constant current value and be as the criterion;
If select the LM338 of metallic packaging for use, because of the operating current I need not install radiator additional.
Method for using
Rechargeable battery joint number: can be 1～4 joint NI-G or nickel-hydrogen chargeable cell and carry out constant current charge;
Charging current: have fast, slow two grades, quick charge shelves charging current is 155mA; Selecting for use at a slow speed, charging current is 50mA;
The battery of the older or poor-performing of rechargeable battery, the charging interval should be controlled long;
Generally speaking, should select the little current system charging of slow shelves to help to fill rechargeable battery full, and rechargeable battery can not generate heat, easy damaged rechargeable battery not;
Be following the rechargeable battery of 4 joints when charging, because of the voltage difference at three end adjustable voltage-regulating ic piece two ends will produce more heat more greatly, so will pay special attention to the heat radiation and the ventilation of charger.
Claims (1)
1. high-performance constant current charge device, it comprises 220V AC power, AC transformer B, full bridge rectifier and filter circuit, constant-current source circuit and charging circuit, constant current charge condition indication circuit and charging lead-out terminal at a slow speed soon, it is characterized in that:
Constant-current source circuit and soon at a slow speed charging circuit form by the adjustable integrated package of pressure-stabilizing IC1 of three ends, resistance R 1, resistance R 2 and selector switch SW; The cathode output end of the 3rd pin input termination full-bridge rectification of three ends are adjustable integrated package of pressure-stabilizing IC1; The end of the 2nd pin output connecting resistance R1 of three ends are adjustable integrated package of pressure-stabilizing IC1 and an end of resistance R 2; The 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of another termination three ends of resistance R 2; An end of switch SW is selected in the other end selecting of resistance R 1, the 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of another termination three ends of selector switch SW;
The constant current charge condition indication circuit is made up of silicon rectifier diode D1, silicon rectifier diode D2 and LED; The positive pole of LED connects the positive pole of silicon rectifier diode D1 and the 1st pin adjustment end (ADJ) of the adjustable integrated package of pressure-stabilizing IC1 of three ends; Silicon rectifier diode D1 negative pole links to each other with the positive pole of silicon rectifier diode D2, and the negative pole of LED connects the negative pole of silicon rectifier diode D2;
The charging lead-out terminal is that positive terminal of rechargeable battery links to each other with the negative pole of silicon rectifier diode D2 and the negative pole of LED, and negative terminals of rechargeable battery links to each other with the cathode output end of full-bridge rectification and circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201405872U CN202488196U (en) | 2012-04-05 | 2012-04-05 | High-performance constant-current charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201405872U CN202488196U (en) | 2012-04-05 | 2012-04-05 | High-performance constant-current charger |
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| Publication Number | Publication Date |
|---|---|
| CN202488196U true CN202488196U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201405872U Expired - Fee Related CN202488196U (en) | 2012-04-05 | 2012-04-05 | High-performance constant-current charger |
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| Country | Link |
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| CN (1) | CN202488196U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557502A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Control circuit of automobile LED daytime running lamp |
| CN104753155A (en) * | 2014-11-14 | 2015-07-01 | 航天长峰朝阳电源有限公司 | Online type integrated switching type constant-current charging device |
| CN104936356A (en) * | 2015-06-29 | 2015-09-23 | 上海路千电子科技有限公司 | Linear constant-current driving circuit |
| CN105576788A (en) * | 2016-03-07 | 2016-05-11 | 吴圣铎 | Large-current wide-voltage constant current charger |
-
2012
- 2012-04-05 CN CN2012201405872U patent/CN202488196U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557502A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Control circuit of automobile LED daytime running lamp |
| CN104753155A (en) * | 2014-11-14 | 2015-07-01 | 航天长峰朝阳电源有限公司 | Online type integrated switching type constant-current charging device |
| CN104753155B (en) * | 2014-11-14 | 2017-11-03 | 航天长峰朝阳电源有限公司 | Online integrated switch mode constant current charger |
| CN104936356A (en) * | 2015-06-29 | 2015-09-23 | 上海路千电子科技有限公司 | Linear constant-current driving circuit |
| CN105576788A (en) * | 2016-03-07 | 2016-05-11 | 吴圣铎 | Large-current wide-voltage constant current charger |
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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: 20121010 Termination date: 20130405 |