CN205622299U - Wide voltage constant current charger of heavy current - Google Patents
Wide voltage constant current charger of heavy current Download PDFInfo
- Publication number
- CN205622299U CN205622299U CN201620172215.6U CN201620172215U CN205622299U CN 205622299 U CN205622299 U CN 205622299U CN 201620172215 U CN201620172215 U CN 201620172215U CN 205622299 U CN205622299 U CN 205622299U
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Abstract
The utility model relates to a wide voltage constant current charger of heavy current, its characteristic includes: exchange reduction voltage circuit and full -bridge rectification filter circuit, decide heng yuan and charging current regulator circuit, fill electrical output, decide model that the fixed steady voltage integrated circuit IC1 in heng yuan and the charging current regulator circuit selected for use for LM7805. The technique that the charger is commonly used has charge mode such as level pressure unsteady flow, vary voltage unsteady flow, pulsed, constant current level pressure. It is in the majority that the charger sold on the market is manufactured in a rough and slipshod way, if rechargeable battery uses simple and easy charger to charge for a long time, rechargeable battery's life -span will great discount. Wide voltage constant current charger of heavy current can charge to any rechargeable battery, and it is very convenient use, its charging voltage scope be 1.2~12V, charging current can be at 20~1000mA scope continuously adjustable, and charging current keeps the invariant from start to finish.
Description
Technical field
This utility model belongs to charging technique field, is about one big electric current Width funtion constant current charger.
Background technology
The technology that charger is conventional has the charging modes such as level pressure unsteady flow, variable voltage and variable current, pulsed, constant current level pressure.
The charger sold on market is shoddy in the majority, if the charging of rechargeable battery life-time service simple charger,
The life-span of rechargeable battery will have a greatly reduced quality.
Any rechargeable battery can be charged by big electric current Width funtion constant current charger described in the utility model,
And very easy to use, its charge voltage range is 1.2～12V, and charging current can be 20～1000mA
Scope continuously adjusts, and charging current keeps constant from start to finish.
Big electric current Width funtion constant current charger described in the utility model is in addition to can being the charging of various nickel-cadmium cell, also
Can be alkaline battery or dry battery charge, its charging current be adjustable, and charging current is preset by linear potentiometer.
Big electric current Width funtion constant current charger institute in implementation process described in the utility model described further below
Relate to necessity, guardian technique content.
Utility model content
Goal of the invention and beneficial effect: the technology that charger is conventional have level pressure unsteady flow, variable voltage and variable current, pulsed,
The charging modes such as constant current level pressure.The charger sold on market is shoddy in the majority, if rechargeable battery is long-term
Using easy charger to charge, the life-span of rechargeable battery will have a greatly reduced quality.Described in the utility model greatly
Any rechargeable battery can be charged by electric current Width funtion constant current charger, and very easy to use, it
Charge voltage range be 1.2～12V, charging current can continuously adjust in 20～1000mA scopes, and charging
Electric current keeps constant from start to finish.It can be various that big electric current Width funtion constant current charger described in the utility model removes
Nickel-cadmium cell charging outside, can be also alkaline battery or dry battery charge, its charging current is adjustable, charging current by
Linear potentiometer is preset.
Circuit operation principle: the charge voltage range of big electric current Width funtion constant current charger is 1.2～12V, can
Being charged any rechargeable battery set, charging current continuously adjusts from 20～1000mA, and charging current is certainly
Begin to keeping constant eventually.
Fixing voltage stabilizing IC 1 is operated in suspended state, it and high-power NPN type triode VT1
Colelctor electrode, transmitting interpolar form one and determine constant current.Change the base stage electricity of high-power NPN type triode VT1
Stream size, can control the constant current value (that is: the load current of LM7805) of fixed stably pressure IC 1, when
When load internal resistance (battery is many or few) changes, fixing voltage stabilizing IC 1 changes self pressure automatically
Difference ensures to flow through the colelctor electrode of high-power NPN type triode VT1, the electric current of emitter stage keeps constant, i.e.
Stabilize charging current.
Technical scheme: big electric current Width funtion constant current charger, it includes ac buck circuit and full-bridge rectification filter
Wave circuit, determine Heng Yuan and charging current and adjust circuit, charging lead-out terminal, it is characterised in that:
Ac buck circuit and full-bridge rectification filter circuit: it by 220V alternating current power supply, mains transformer B,
Full-bridge rectification element QZ and filter capacitor C1 composition, the two termination 220V of mains transformer B primary coil L1
Alternating current power supply, the two termination full-bridge rectification element QZ alternating current inputs of mains transformer B secondary coil L2
Two ends, the positive pole of full-bridge rectification element QZ DC output end connects the positive pole of filter capacitor C1, and full-bridge is whole
The negative pole of fluid element QZ DC output end is connected with the negative pole of filter capacitor C1 and circuit ground GND；
Determine Heng Yuan and charging current and adjust circuit: it is by fixing voltage stabilizing IC 1, resistance R1, linear
Potentiometer RP, high-power NPN type triode VT1 form, the model that fixing voltage stabilizing IC 1 is selected
For LM7805, the positive pole of the input termination filter capacitor C1 of fixing voltage stabilizing IC 1 and resistance R1's
One end, the other end of resistance R1 connects one end of linear potentiometer RP, the other end of linear potentiometer RP and
The movable base stage terminating high-power NPN type triode VT1, the output termination of fixing voltage stabilizing IC 1
The colelctor electrode of high-power NPN type triode VT1；
Charging lead-out terminal: the adjustment of fixing voltage stabilizing IC 1 terminates high-power NPN type triode VT1
Emitter stage and the positive pole of charging lead-out terminal, negative pole and the circuit ground GND of charging lead-out terminal is connected.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit work of big electric current one embodiment of Width funtion constant current charger that this utility model provides
Make schematic diagram.
Detailed description of the invention
Illustrate according to the big electric current Width funtion constant current charger circuit fundamental diagram shown in accompanying drawing 1 and accompanying drawing,
And according to annexation between components and parts in each several part circuit described in utility model content, and embodiment
Described in components and parts technical parameter require and circuit production main points carry out enforcement and can realize this utility model,
Below in conjunction with embodiment, correlation technique of the present utility model is further described.
The technical parameter of components and parts and selection requirement thereof
IC1 is fixing integrated regulator, and the model of selection is LM7805；
VT1 is high-power NPN transistor, and the model of selection is 3DD series high-power NPN transistor,
Require operating current >=3A, β >=60；
QZ is full-bridge rectification element, and the technical parameter of use is 3A, 50V, or selects 4 1N5401 silicon whole
Stream diode is barricaded as full bridge rectifier；
The resistance of resistance R1 is 1.2K Ω；RP is linear potentiometer, and the resistance of use is 47K Ω；
C1 is filter capacitor, the electrochemical capacitor using capacity to be 1000 μ F/35V；
B is mains transformer, and selection power is 30W, output voltage is 18V, the friendship of output electric current >=1.5A
Stream piezoelectric transformer.
Circuit production main points, circuit debugging and using method
Because the circuit structure of big electric current Width funtion constant current charger is fairly simple, as long as generally select
Electronic devices and components performance is intact, and the components and parts annexation in accompanying drawing 1 is welded to specifications, thing
Reason connecting line and welding quality are after going through correctly, and circuit of the present utility model has only to carry out
Debugging can normally work simply；
Circuit needs to adjust the resistance of resistance R1 after installing, can be according to high-power NPN type triode VT1
Amplifying power changes its resistance size；
When the regulation of electrical circuit, charging outfan concatenation 1A DC ammeter, the resistance of linear potentiometer RP is adjusted
To zero, will charging outfan short circuit, adjust the resistance of resistance R1, make DC current meter reading reach 1A
It is worth greatly；
For even regulation charging current, it is proposed that use line preferably to use around linear potentiometer, linear potentiometer RP
Volume is bigger；
It addition, when carrying out low-voltage, large current charge, fixing voltage stabilizing IC 1 and high-power NPN
Type audion VT1 caloric value is relatively big, so these 2 components and parts must add one piece of larger-size aluminium radiator.
Circuit structure design of the present utility model, components' placement, and its face shaping and size big
Little etc. is not key technology of the present utility model, is not the claimed guardian technique of this utility model
Content, because not affecting this utility model specific implementation process and the realization of utility model purpose, therefore not in explanation
Book illustrates one by one.
Claims (1)
1. a big electric current Width funtion constant current charger, it includes ac buck circuit and full-bridge rectifier filter electricity
Road, determine Heng Yuan and charging current and adjust circuit, charging lead-out terminal, it is characterised in that:
Described ac buck circuit and full-bridge rectification filter circuit by 220V alternating current power supply, mains transformer B,
Full-bridge rectification element QZ and filter capacitor C1 composition, the two termination 220V of mains transformer B primary coil L1
Alternating current power supply, the two termination full-bridge rectification element QZ alternating current inputs of mains transformer B secondary coil L2
Two ends, the positive pole of full-bridge rectification element QZ DC output end connects the positive pole of filter capacitor C1, and full-bridge is whole
The negative pole of fluid element QZ DC output end is connected with the negative pole of filter capacitor C1 and circuit ground GND；
Described determines Heng Yuan and charging current adjustment circuit by fixing voltage stabilizing IC 1, resistance R1, line
Property potentiometer RP, high-power NPN type triode VT1 composition, the type that fixing voltage stabilizing IC 1 is selected
Number it is LM7805, the positive pole of the input termination filter capacitor C1 of fixing voltage stabilizing IC 1 and resistance R1
One end, the other end of resistance R1 connects one end of linear potentiometer RP, the other end of linear potentiometer RP and
Its movable base stage terminating high-power NPN type triode VT1, the outfan of fixing voltage stabilizing IC 1
Connect the colelctor electrode of high-power NPN type triode VT1；
Described charging lead-out terminal: the adjustment of fixing voltage stabilizing IC 1 terminates high-power NPN type three
The emitter stage of pole pipe VT1 and the positive pole of charging lead-out terminal, the negative pole of charging lead-out terminal and circuit ground GND
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172215.6U CN205622299U (en) | 2016-03-07 | 2016-03-07 | Wide voltage constant current charger of heavy current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172215.6U CN205622299U (en) | 2016-03-07 | 2016-03-07 | Wide voltage constant current charger of heavy current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622299U true CN205622299U (en) | 2016-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620172215.6U Expired - Fee Related CN205622299U (en) | 2016-03-07 | 2016-03-07 | Wide voltage constant current charger of heavy current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576788A (en) * | 2016-03-07 | 2016-05-11 | 吴圣铎 | Large-current wide-voltage constant current charger |
-
2016
- 2016-03-07 CN CN201620172215.6U patent/CN205622299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiao Zhu Inventor before: Wu Shengduo |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170302 Address after: 510220 Guangdong city of Guangzhou province Haizhuqu District Industrial Avenue Tong Road No. 2 courtyard by Stephen 1 Building 2 floor 204 self Patentee after: Guangzhou City, Hao Electromechanical Equipment Co. Ltd Address before: 233000 Bengbu province hi tech Zone in the East China Sea Road, the landscape of the Chinese garden, building 3 - 802 - 26 - Patentee before: Wu Shengduo |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20180307 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |