CN202957644U - Outdoor constant-current charger for rechargeable batteries - Google Patents
Outdoor constant-current charger for rechargeable batteries Download PDFInfo
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- CN202957644U CN202957644U CN 201220723781 CN201220723781U CN202957644U CN 202957644 U CN202957644 U CN 202957644U CN 201220723781 CN201220723781 CN 201220723781 CN 201220723781 U CN201220723781 U CN 201220723781U CN 202957644 U CN202957644 U CN 202957644U
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Abstract
The utility model provides an outdoor constant-current charger for rechargeable batteries. According to the technical scheme of the constant-current charger, the constant-current charger comprises a 12V DC power supply, a DC power supply polarity identifying circuit, two sets of constant-current source circuits, a fast/slow charging selection circuit, two sets of charging status indicating circuits, and two sets of constant-current output terminals. On the premise that the application requirements of rechargeable batteries in out-field special environments are taken into full account, the circuit design of the outdoor constant-current charger for rechargeable batteries facilitates the development of the excellent performances of Ni-Cad and Ni-MH rechargeable batteries. Meanwhile, the problem that once rechargeable batteries are fully charged and detached from chargers, the peak voltages of the rechargeable batteries drop greatly due to the self-discharge phenomenon of the rechargeable batteries can be solved. In view of the self-discharge phenomenon of rechargeable batteries, the peak voltages (electric quantities) of the rechargeable batteries, which are fulminic and instable, are effectively utilized by the above charger. Thus, the charger can be adapted to electric model airplane speed games, endurance races, electric air model free flights, remote-control model airplane duration competitions and other competition items.
Description
Technical field
The utility model belongs to electronic technology and battery boosting technology field, relates to the outdoor constant current charger of a kind of rechargeable battery.
Background technology
The charger of rechargeable battery is of a great variety, the charger common technology has the modes such as unsteady flow level pressure, variable voltage and variable current, pulsed, constant current level pressure, once but all rechargeable batteries break away from charger after electric weight is full of, the voltage of rechargeable battery will fall to some extent than the crest voltage in online when charging, therefore its reason is mainly the some self-discharge phenomenons of rechargeable battery.And the energy that this part electric weight is very valuable, explosive force is larger of rechargeable battery crest voltage often is left in the basket, people generally believe that this electric weight of loss is insignificant, are exactly that this problem is also paid attention to all the time on the daily workout or match of model plane.
The student of many schools pursues blindly, simply purchase, uses large capacity rechargeable battery.With regard to reality, be no matter model plane training at ordinary times, still participate in various model plane competitions, the amount of capacity of rechargeable battery is not subject matter always, and whether handy rechargeable battery is, and key is how, correctly not use aspect rechargeable battery to make an effort; Common way is charged at the indoor rechargeable battery of giving last night, and second day just is directly used in the participation model plane competition, so does and generally is difficult to obtain outstanding achievement.
The model plane electrokinetic cell is charged by charger in outfield, can effectively improve or more fill the phenomenon that the phenomenons such as rechargeable battery self discharge cause the rechargeable battery crest voltage significantly to fall.
Below describe the outdoor constant current charger of rechargeable battery described in the utility model related correlation technique content in implementation process in detail.
The utility model content
Goal of the invention and beneficial effect: the outdoor constant current charger of rechargeable battery described in the utility model is on circuit design, take into full account the requirement of using rechargeable battery under the particular surroundings of outfield, for being conducive to bring into play NI-G, nickel-hydrogen chargeable cell superior function, break away from charger once solve after electric quantity of rechargeable battery is full of, the phenomenons such as rechargeable battery self discharge can cause the rechargeable battery crest voltage significantly to fall.The situation of the characteristic based on the rechargeable battery self discharge, this charger can effectively utilize the larger electric weight of this part burst of rechargeable battery crest voltage (electric weight), is applicable to electronic model plane fast, durable, electronic empty mould free flight, the remote controlled model plane event such as leave a blank unexpectedly.
Charger for long-term use simple charger or common rectifier power source as rechargeable battery, rechargeable battery described in the utility model outfield with constant current charger can to rechargeable battery performance " early ageing " or performance low certain repair arranged.
Technical characterictic: the outdoor constant current charger of rechargeable battery, it is by 12V DC power supply, DC power supply polarity identification circuit, two groups of constant-current source circuits, fast or at a slow speed charging selects circuit, two groups of charging working state indicating circuits, two groups of constant current lead-out terminals to form, and its feature comprises:
Two groups of constant-current source circuits: it is comprised of the adjustable integrated package of pressure-stabilizing IC1 of three ends, resistance R 1, resistance R 2 and the adjustable integrated package of pressure-stabilizing IC2 of three ends, resistance R 3, resistance R 4 respectively, the adjustable integrated package of pressure-stabilizing IC1 of three ends input the 3rd pin connects the positive pole of electrochemical capacitor C1, the end of output the 2nd pin connecting resistance R1 of the adjustable integrated package of pressure-stabilizing IC1 of three ends 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 end of the other end of resistance R 1 and resistance R 2; The adjustable integrated package of pressure-stabilizing IC2 of three ends input the 3rd pin connects the positive pole of electrochemical capacitor C1, the end of output the 2nd pin connecting resistance R3 of the adjustable integrated package of pressure-stabilizing IC2 of three ends and an end of resistance R 4, the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC2 of another termination three end of the other end of resistance R 3 and resistance R 4;
Charge and select circuit fast or at a slow speed: single-pole double-throw switch (SPDT) SW common port com meets the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC2 of three ends, the contact a of single-pole double-throw switch (SPDT) SW meets the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC1 of three ends, and the contact b of single-pole double-throw switch (SPDT) SW connects the positive pole of silicon rectifier diode D7;
Two groups of constant current lead-out terminals: silicon rectifier diode D5～D6 and silicon rectifier diode D7～D8 are serially connected in respectively constant-current source circuit A, in the output loop of constant-current source circuit B, the positive pole of silicon rectifier diode D5 meets the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC1 of three ends and the contact a of single-pole double-throw switch (SPDT) SW, the negative pole of silicon rectifier diode D5 connects the positive pole of silicon rectifier diode D6, the negative pole of silicon rectifier diode D6 connects constant current A group lead-out terminal, the contact b of the anodal single-pole double-throw switch (SPDT) SW of silicon rectifier diode D7, the negative pole of silicon rectifier diode D7 connects the positive pole of silicon rectifier diode D8, the negative pole of silicon rectifier diode D8 connects constant current B group lead-out terminal,
The positive pole of the super bright LED 1 in two groups of charging working state indicating circuit: A group indicating circuits connects the positive pole of silicon rectifier diode D5, the negative pole of super bright LED 1 connects the negative pole of silicon rectifier diode D6, the positive pole of the super bright LED 2 in B group circuit connects the positive pole of silicon rectifier diode D7, and the negative pole of super bright LED 2 connects the negative pole of silicon rectifier diode D8.
The DC power supply polarity identification circuit: it is connected into full bridge rectifier by 4 Schottky diode D1～D4, the positive pole of full bridge rectifier output connects the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of electrochemical capacitor C1, the full bridge rectifier input connects respectively 12V DC power anode and 12V DC power cathode.
The circuit working principle: the utility model is directly to use the power supply of 12V DC power supply as charger, for being adapted at the extensive use in outfield, power supply input at charger, access 4 very little Schottky diodes of pressure drop and form bridge rectifier, solve the problem of power supply polarity identification, otherwise no longer include DC power supply polarity connection anxiety in use.Form constant-current source by three end adjustable voltage-regulating ic pieces (LM317), make the constant current numerical value of output accurate, convenience is provided during for outfield charging or indoor charging control.
The outdoor constant current charger of rechargeable battery is provided with the electric power polarity identification circuit, and its output port is not afraid of short circuit.
The outdoor constant current charger of rechargeable battery is in charging process, and charging current numerical value is invariable, greatly facilitates the control of charging process to the time.
In the circuit of the outdoor constant current charger of rechargeable battery, 1 single-pole double-throw switch (SPDT) SW is set and can solves 2 problems: the one, select one group of rechargeable battery or two groups of rechargeable batteries to charge simultaneously; The 2nd, can be used for quick charge or the manual switchover of charging at a slow speed.
By generation >=1.4V forward voltage drop after 2 silicon rectifier diode series connection, for super bright light-emitting diode provides operating voltage.2 silicon diodes of first connecting respectively in two groups of output loops; After at 1 super bright light-emitting diode of 2 silicon diode two ends cross-over connections, solved the state indication of rechargeable battery set when charging.
The accompanying drawing explanation
Accompanying drawing 1 is the outdoor constant current charger of rechargeable battery circuit working schematic diagram used in an embodiment.
Embodiment
Below in conjunction with accompanying drawing, enforcement of the present utility model is described, circuit diagram also can be realized material object of the present utility model according to subordinate list and following specification requirement.
Components and parts title and important technological parameters
| No. haoHAO, element number | The components and parts title | Leading indicator | Quantity | Remarks | |
| IC1、IC2 | LM317 or LM338 | TO-220 or TO-3 |
2 | Positive polarity output | |
| D1～D4 | The 1N5825(Schottky diode) | 3A/40V | 4 | Or use SB220 | |
| D5～D8 | The 1N4001(silicon rectifier diode) | 1A/50V | 4 | Or use 1N4002 | |
| LED1、LED2 | Super bright red light emitting diodes | ￠5 | 2 | Being applicable to outfield uses | |
| C1 | Electrochemical capacitor | 1000μF/ |
1 | Vertical | |
| R1、R3 | Metalfilmresistor | 10Ω/ |
2 | ||
| R2、R4 | Fixed | 43Ω | 2 | The fine setting constant current value |
Circuit production main points and circuit debugging
Three end adjustable voltage-regulating ic pieces: the LM338 that must select anodal output plastic packaging LM317 or metallic packaging;
Heat abstractor: because of the plastic casing inner space of charger less, be applicable to the radiator of three end adjustable voltage-regulating ic pieces (LM317) on market without specification, therefore select 3 solderable radiators and connect for every group, every group of radiator uses respectively the screw rod of 1 piece of ￠ 3 * 30mm to tighten together, and the leg of 2 groups of radiators directly is welded on the corresponding pad of PCB circuit board.If select the LM338 of metallic packaging, because of the operating current I not use radiator;
Constant current value is adjusted: in circuit diagram, resistance R 2 or resistance R 4 are established for accurately adjusting constant current value, and its Standard resistance range is 39～51 Ω.
Technical indicator
Outfield charging: recommend the storage battery above with 12V, capacity 4AH;
Indoor charging: use at the indoor high-performance battery charger that can be used as, select the common rectifier power source of 12～15V, output current >=1A or AC power or the Switching Power Supply DC power supply as charger;
Be provided with and charge fast, at a slow speed 2 grades;
Charging port: A group, B organize output port, are 1 group or are the chargings of 2 groups of rechargeable batteries simultaneously;
Charging current: select slow shelves, A, two groups of output port charging currents of B are the 150mA(constant current); Selecting fast shelves constant current value is 300mA, but can only use A group port;
Every group of output port of charger has respectively the operating state indication;
Rechargeable battery joint number: can be * 2 groups of (1.2～7.2V * 2 group) NI-Gs of 1～6 joint or nickel-hydrogen chargeable cell and carry out constant current charge.
Using method
The battery of the older or poor-performing of rechargeable battery, the charging interval should be selected long.In the situation that outfield is model plane power battery charging or in the use such as anxious, should selects a slow shelves low current charge mode to contribute to fill fullly by rechargeable battery, and be difficult for generating heat and damage rechargeable battery;
Before indoor charging, for eliminating memory rechargeable battery set remaining electric quantity, should discharge when discharging current is 300mA by standard, the final voltage of rechargeable battery bringing onto load electric discharge is 0.85～0.90V;
When charging at a slow speed, it is that the 1.58V(charger does not design and is full of automatic stopping circuit that every joint rechargeable battery is controlled voltage, and during use, the most handy digital voltmeter monitors, to prevent overcharge damage rechargeable battery).
Claims (2)
1. the outdoor constant current charger of a rechargeable battery, it is by 12V DC power supply, DC power supply polarity identification circuit, two groups of constant-current source circuits, fast or at a slow speed charging selects circuit, two groups of charging working state indicating circuits, two groups of constant current lead-out terminals to form, and its feature comprises:
Described two groups of constant-current source circuits are comprised of the adjustable integrated package of pressure-stabilizing IC1 of three ends, resistance R 1, resistance R 2 and the adjustable integrated package of pressure-stabilizing IC2 of three ends, resistance R 3, resistance R 4 respectively, the adjustable integrated package of pressure-stabilizing IC1 of three ends input the 3rd pin connects the positive pole of electrochemical capacitor C1, the end of output the 2nd pin connecting resistance R1 of the adjustable integrated package of pressure-stabilizing IC1 of three ends 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 end of the other end of resistance R 1 and resistance R 2; The adjustable integrated package of pressure-stabilizing IC2 of three ends input the 3rd pin connects the positive pole of electrochemical capacitor C1, the end of output the 2nd pin connecting resistance R3 of the adjustable integrated package of pressure-stabilizing IC2 of three ends and an end of resistance R 4, the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC2 of another termination three end of the other end of resistance R 3 and resistance R 4;
Fast described or at a slow speed charging select single-pole double-throw switch (SPDT) SW common port com in circuit to meet the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC2 of three ends, the contact a of single-pole double-throw switch (SPDT) SW meets the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC1 of three ends, and the contact b of single-pole double-throw switch (SPDT) SW connects the positive pole of silicon rectifier diode D7;
Silicon rectifier diode D5～D6 and silicon rectifier diode D7～D8 in described two groups of constant current lead-out terminals are serially connected in respectively constant-current source circuit A, in the output loop of constant-current source circuit B, the positive pole of silicon rectifier diode D5 meets the 1st pin adjustment end ADJ of the adjustable integrated package of pressure-stabilizing IC1 of three ends and the contact a of single-pole double-throw switch (SPDT) SW, the negative pole of silicon rectifier diode D5 connects the positive pole of silicon rectifier diode D6, the negative pole of silicon rectifier diode D6 connects constant current A group lead-out terminal, the contact b of the anodal single-pole double-throw switch (SPDT) SW of silicon rectifier diode D7, the negative pole of silicon rectifier diode D7 connects the positive pole of silicon rectifier diode D8, the negative pole of silicon rectifier diode D8 connects constant current B group lead-out terminal,
The positive pole of the super bright LED 1 in the A group indicating circuit in described two groups of charging working state indicating circuits connects the positive pole of silicon rectifier diode D5, the negative pole of super bright LED 1 connects the negative pole of silicon rectifier diode D6, the positive pole of the super bright LED 2 in B group circuit connects the positive pole of silicon rectifier diode D7, and the negative pole of super bright LED 2 connects the negative pole of silicon rectifier diode D8.
2. the outdoor constant current charger of rechargeable battery according to claim 1, it is characterized in that: the DC power supply polarity identification circuit is connected into full bridge rectifier by 4 Schottky diode D1～D4, the positive pole of full bridge rectifier output connects the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of electrochemical capacitor C1, the full bridge rectifier input connects respectively 12V DC power anode and 12V DC power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723781 CN202957644U (en) | 2012-12-25 | 2012-12-25 | Outdoor constant-current charger for rechargeable batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723781 CN202957644U (en) | 2012-12-25 | 2012-12-25 | Outdoor constant-current charger for rechargeable batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957644U true CN202957644U (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220723781 Expired - Fee Related CN202957644U (en) | 2012-12-25 | 2012-12-25 | Outdoor constant-current charger for rechargeable batteries |
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| Country | Link |
|---|---|
| CN (1) | CN202957644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795128A (en) * | 2014-03-06 | 2014-05-14 | 黄宇嵩 | Two-step constant current high-power charger with computer USB port for mobile phone battery |
-
2012
- 2012-12-25 CN CN 201220723781 patent/CN202957644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795128A (en) * | 2014-03-06 | 2014-05-14 | 黄宇嵩 | Two-step constant current high-power charger with computer USB port for mobile phone 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: 20130529 Termination date: 20131225 |