CN204836733U - No electrolytic capacitor driver - Google Patents
No electrolytic capacitor driver Download PDFInfo
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- CN204836733U CN204836733U CN201520642337.2U CN201520642337U CN204836733U CN 204836733 U CN204836733 U CN 204836733U CN 201520642337 U CN201520642337 U CN 201520642337U CN 204836733 U CN204836733 U CN 204836733U
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- electrolytic capacitor
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Abstract
The utility model discloses a no electrolytic capacitor driver belongs to LED illumination field. Including rectifier bridge, bypass protection circuit, current -limiting circuit, switch tube and LED lamp, the output positive pole of rectifier bridge and the input connection of current -limiting circuit, the output of current -limiting circuit and the input connection of switch tube, the output and the input of bypass protection circuit of switch tube are connected, and the output and the one end of LED banks of bypass protection circuit are connected, and the other end of LED banks is connected with the output negative pole of rectifier bridge. It uses paster electric capacity and CBB to replace electrolytic capacitor, has improved the life of way lamp module group, and circuit structure is simple, and the equipment is convenient, and the fault rate is low, has reduced the later maintenance cost.
Description
Technical field
The utility model belongs to field of LED illumination, relates to a kind of no electrolytic capacitor driver.
Background technology
Along with the development of lighting technical field, LED light source is because having use low-tension supply, power consumption is few, applicability is strong, stability is high, response time is short, environmentally safe, the advantage such as multicolor luminous, become main flow lighting source of new generation, LED is as the LED lamp tube of lighting source, LEDbulb lamp etc. instead of existing incandescent lamp gradually, fluorescent lamp etc., LED lamp all needs LED drive power ability lightening LED lamp tool, the driving power of LED lamp, need first the high-frequency alternating current of input to be converted into direct current (being realized by rectification circuit), carried out the input queued switches chips such as filtering voltage regulation (filter circuit) again, but, filter circuit of the prior art generally adopts electrochemical capacitor to carry out filtering, and the useful life of general electrochemical capacitor is 1-2 thousand hours, but the life-span of LED luminescence chip itself is 5,000 hours, therefore, under the normal state used, because electrochemical capacitor does not mate with life-span of LED luminescence chip itself useful life, cause the useful life of LED lamp shorter, simultaneously, also result in the waste of resource, be not inconsistent with existing energy-conserving and environment-protective theme.
Chinese utility model patent, Authorization Notice No.: CN204291523U; Authorized announcement date: 2015.04.22, disclose a kind of LED drive power of no electrolytic capacitor, be made up of LC filter circuit, leakage protection circuit, bridge rectifier, high-frequency filter capacitor, fast recovery diode, two winding transformer, coupling capacitance, power MOSFET tube, multivibrator; LC filter circuit, leakage protection circuit, bridge rectifier composition AC/DC translation circuit, for changing into half-wave DC electricity by the alternating current of input; High-frequency filter capacitor, two winding transformer, coupling capacitance, fast recovery diode composition voltage conversion circuit, completes DC voltage conversion and level and smooth output waveform; Power MOSFET tube and multivibrator form load output control circuit, work for driving LED light fixture.This utility model circuit is extremely succinct; there is the function of earth leakage protective, capability correction and light modulation; and only need to adopt low value capacitor and patch capacitor thus thoroughly avoid using electrolytic capacitor, make LED lamp for cheap long-lived mass production environment thus enter common people house may.Its weak point is: although electrochemical capacitor has been replaced to patch capacitor by it; but the high-frequency filter capacitor in circuit, two winding transformer, coupling capacitance, fast recovery diode composition voltage transformation electricity; the weight of circuit itself can be added; the insulation property that the machine of two winding transformer makes are not so good as manual coiling; but manual coiling efficiency is low; this, by affecting the performance of circuit itself, adds later maintenance cost, and does not have design protection for LED itself.
Utility model content
1. the utility model technical problem that will solve
The problem that street lamp module for prior art all needs constant-current driving power supply external, the utility model provides a kind of no electrolytic capacitor driver, it uses patch capacitor and CBB to replace electrochemical capacitor, improve the useful life of street lamp module, circuit structure is simple, easy to assembly, failure rate is low, reduces later maintenance cost.
2. technical scheme
For solving the problem, the technical scheme that the utility model provides is:
A kind of no electrolytic capacitor driver; comprise rectifier bridge, bypass protection circuit, current-limiting circuit, switching tube and LED; the output cathode of rectifier bridge is connected with the input of current-limiting circuit; the output of current-limiting circuit is connected with the input of switching tube; the output of switching tube is connected with the input of bypass protection circuit; the output of bypass protection circuit is connected with one end of LED group, and the other end of LED group is connected with the output negative pole of rectifier bridge.
Preferably, described bypass protection circuit has 7, connects successively between each bypass protection circuit.
Preferably, each bypass protection circuit is all connected in parallel on the two ends of LED.
Preferably, described rectifier bridge is rectification chip, and civil power is changed into direct current.
Preferably, described bypass protection circuit is integrated circuit, the overcurrent that short circuit and open circuit for preventing LED cause and overvoltage phenomenon.
Preferably, the capacity cell in the circuit of each module all adopts patch capacitor.
Preferably, the capacity cell in the circuit of each module all adopts CBB electric capacity.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) useful life of electrochemical capacitor is 1-2 thousand hours, but the life-span of LED luminescence chip itself is 5,000 hours, therefore, under the normal state used, because electrochemical capacitor does not mate with life-span of LED luminescence chip itself useful life, cause the useful life of LED lamp shorter, simultaneously, also result in the waste of resource, be not inconsistent with existing energy-conserving and environment-protective theme.The present invention adopts patch capacitor to replace traditional electrochemical capacitor, and the useful life of patch capacitor and the useful life of LED luminescence chip match, thus improves the useful life of LED lamp, meanwhile, also energy-conservation more economically, meets energy-conserving and environment-protective theme.；
(2) utility grid voltage has fluctuation, and current-limiting circuit and switching tube link together, and the electric current of stable output, prevents voltage ripple of power network, causes electric current in the circuit of each module to raise, damages LED, play the effect of protection LED;
(3) bypass protection circuit on the one hand can size of current in regulating circuit, thus regulates the power of LED, and then regulates the power of LED, regulates the brightness of each street lamp further; The reliability of each street lamp circuit can also be ensured on the other hand, each bypass protection circuit is all connected in parallel on the two ends of LED group, LED group is composed in series by LED, bypass protection circuit is integrated circuit, when the overcurrent that short circuit causes appears in LED wherein, during the overvoltage phenomenon that open circuit causes, bypass protection circuit can be avoided occurring this phenomenon in modular circuit, play the protective effect to street lamp, the life-span of circuit can be extended simultaneously;
(4) existing LED street lamp module cannot directly use, necessary optional equipment external Waterproof LED driving power, this power supply is in order to ensure that the performances such as its waterproof generally adopt casting glue embedding, the large Heavy Weight of volume, virtually add the volume and weight of whole street lamp, cause the present situation that present ubiquitous LED street lamp lamp holder is overweight, also very high to the requirement of strength of lamp stand, add the production stage of road lamp cap simultaneously, invention removes outside driving power, modular circuit is arranged on one piece of circuit board, each circuit block, modularization, integrated, volume is little, lightweight, low to the requirement of strength of lamp stand, simplify the production stage of lamp holder, enhance productivity, easy to assembly, failure rate is low, reduce later maintenance cost.
Accompanying drawing explanation
Fig. 1 is existing street lamp module connection diagram;
Fig. 2 is LED street lamp module connection diagram of the present utility model;
Fig. 3 is no electrolytic capacitor drive circuit schematic diagram of the present utility model.
Label declaration in schematic diagram:
1, civil power; 11, driving power; 2, water joint; 3, T letter end; 41, LED module I; 42, LED module II; 43, LED module III; 141, module I; 142, module II; 143, module III; .
Embodiment
For understanding content of the present utility model further, by reference to the accompanying drawings and embodiment the utility model is described in detail.
Embodiment 1
Composition graphs 2 and Fig. 3, civil power 1 is connected with water joint 2, water joint is the water resistance for ensureing circuit, the connection of water joint 2 and T letter end 3, T letter end 3 simplifies the connection line of circuit, avoid the potential safety hazard that complicated cabling causes, it also comprises street lamp module, wherein, street lamp module comprises N number of module, and N is integer, each module all holds 3 to be connected with T letter, each module is separately positioned in each road lamp cap, and series connection between each T letter end 3, namely the equal parallel connection of each street lamp on the utility grids.
No electrolytic capacitor driver is all had in each module, no electrolytic capacitor driver comprises rectifier bridge, bypass protection circuit, current-limiting circuit, switching tube and LED, the output cathode of rectifier bridge is connected with the input of current-limiting circuit, rectifier bridge is rectification chip, civil power 1 is changed into direct current, and rectification chip simplifies rectifier circuit, integrated, modularization, reduces the weight and volume of rectifier bridge; The output of current-limiting circuit is connected with the input of switching tube, and civil power 1 line voltage has fluctuation, and current-limiting circuit and switching tube link together; the electric current of stable output, prevents voltage ripple of power network, causes electric current in the circuit of each module to raise; damage LED, play the effect of protection LED.
The output of switching tube is connected with the input of bypass protection circuit, and the output of bypass protection circuit is connected with one end of LED group, and the other end of LED group is connected with the output negative pole of rectifier bridge.Bypass protection circuit on the one hand can size of current in regulating circuit, thus regulates the power of LED, and then regulates the power of LED, regulates the brightness of each street lamp further; The reliability of each street lamp circuit can also be ensured on the other hand; each bypass protection circuit is all connected in parallel on the two ends of LED group; LED group is composed in series by LED; bypass protection circuit is integrated circuit; when the overcurrent that short circuit causes appears in LED wherein, during the overvoltage phenomenon that open circuit causes, bypass protection circuit can be avoided occurring this phenomenon in modular circuit; play the protective effect to street lamp, the life-span of circuit can be extended simultaneously.Bypass protection circuit has 7, connects successively between each bypass protection circuit, jointly avoids the phenomenon occurring overcurrent and overvoltage in modular circuit.
Capacity cell in the circuit of each module all adopts patch capacitor.The useful life of electrochemical capacitor is 1-2 thousand hours, but the life-span of LED luminescence chip itself is 5,000 hours, therefore, under the normal state used, because electrochemical capacitor does not mate with life-span of LED luminescence chip itself useful life, cause the useful life of LED lamp shorter, simultaneously, also result in the waste of resource, be not inconsistent with existing energy-conserving and environment-protective theme.The present invention adopts patch capacitor to replace traditional electrochemical capacitor, and the useful life of patch capacitor and the useful life of LED luminescence chip match, thus improves the useful life of LED lamp, meanwhile, also energy-conservation more economically, meets energy-conserving and environment-protective theme.
Existing LED street lamp module cannot directly use, necessary optional equipment external Waterproof LED driving power, this power supply is in order to ensure that the performances such as its waterproof generally adopt casting glue embedding, the large Heavy Weight of volume, virtually add the volume and weight of whole street lamp, cause the present situation that present ubiquitous LED street lamp lamp holder is overweight, also very high to the requirement of strength of lamp stand, add the production stage of road lamp cap simultaneously, invention removes outside driving power, modular circuit is arranged on one piece of circuit board, each circuit block, modularization, integrated, volume is little, lightweight, low to the requirement of strength of lamp stand, simplify the production stage of lamp holder, enhance productivity, easy to assembly, failure rate is low, reduce later maintenance cost.
Embodiment 2
Fig. 1 is the connection diagram of prior art street lamp module, civil power 1 is connected with the input of driving power 11, the output of driving power 11 is connected with water joint 2, water joint 2 holds 3 to be connected with T letter, module I141, module II142 and module III143, all hold 3 with each T letter, each T letter holds 3 to connect successively.Due to the electrochemical capacitor in filter circuit, cause the large Heavy Weight of driving power 11 volume, virtually add the volume and weight of whole street lamp, for head it off, invention has been improvement, as shown in Figure 2, street lamp module has three modules, be respectively LED module I41, LED module II42 and LED module III43, eliminate driving power 11, by civil power through water joint 2 and T letter end 3, directly and LED module I41, LED module II42 and LED module III43, i.e. LED module I41, LED module II42 and LED module III43 is in parallel, simplify circuit structure.As shown in Figure 3, each module internal, namely the lamp holder of street lamp arranges one piece of circuit board, and is fixed on the base plate of radiator by screw, because the lightweight of circuit own is little, so can play good fixation.
Each module lowest power, to 30W, has 30 LED, is respectively LED01, LED02, LED03...LED29 and LED30 in peak power 45W, Fig. 3, only carry out bypass protection to the LED of 21 wherein, reason is 1) reduce costs; 2) because TF11 has bypass protection and automatically adjusts the quantity of load LED lamp according to rectifier output voltage in real time, through the calculating of load voltage, adjust 7 bypass protection resistance, circuit voltage and current requirements can be met, prevent circuit overvoltage and overcurrent.
Wherein, LED01, LED02, LED03...LED08 and LED09 totally nine LED connect successively, and LED10, LED11, LED012 connect successively, are LED10 ~ 12 in Fig. 3; LED13, LED14, LED15 connect successively, are LED13 ~ 15 in Fig. 3; LED16, LED17, LED18 connect successively, are LED16 ~ 18 in Fig. 3; LED19, LED20, LED21 connect successively, are LED19 ~ 21 in Fig. 3; LED22, LED23, LED24 connect successively, are LED22 ~ 24 in Fig. 3; LED25, LED26, LED27 connect successively, are LED25 ~ 27 in Fig. 3; LED28, LED29, LED30 connect successively, are LED28 ~ 30 in Fig. 3; In Fig. 3, the anode of the LED10 in LED10 ~ 12 and the terminal 3 of U1 and electric capacity C
s1one end connect, the negative electrode of the LED12 in LED10 ~ 12 and the terminal 1 of U1, electric capacity C
s1the other end and resistance R
s1one end connect, the terminal of U1 4 and resistance R
s1the other end, anode, the C of LED13 in LED13 ~ 15
s2one end be connected with the terminal 3 of U2, C
s2the other end and LED13 ~ 15 in the negative electrode of LED15, the terminal 1 of U2 and R
s2one end connect, the terminal of U2 4 and resistance R
s2the other end, anode, the C of LED16 in LED16 ~ 18
s3one end be connected with the terminal 3 of U3, C
s3the other end and LED16 ~ 18 in the negative electrode of LED16, the terminal 1 of U3 and R
s3one end connect, the terminal of U3 4 and resistance R
s3the other end, anode, the C of LED19 in LED19 ~ 21
s4one end be connected with the terminal 3 of U4, C
s4the other end and LED19 ~ 21 in the negative electrode of LED21, the terminal 1 of U4 and R
s4one end connect, the terminal of U4 4 and resistance R
s4the other end, anode, the C of LED22 in LED22 ~ 24
s5one end be connected with the terminal 3 of U5, C
s5the other end and LED22 ~ 24 in the negative electrode of LED24, the terminal 1 of U5 and R
s5one end connect, the terminal of U5 4 and resistance R
s5the other end, anode, the C of LED25 in LED25 ~ 27
s6one end be connected with the terminal 3 of U6, C
s6the other end and LED25 ~ 27 in the negative electrode of LED27, the terminal 1 of U6 and R
s6one end connect, the terminal of U6 4 and resistance R
s6the other end, anode, the C of LED28 in LED28 ~ 30
s7one end be connected with the terminal 3 of U7, C
s7the other end and LED28 ~ 30 in the negative electrode of LED30, the terminal 1 of U7 and R
s7one end connect, the terminal of U7 4 and resistance R
s7the other end be connected with the drain electrode of switching tube Q1.
Wherein, C
s1, C
s2, C
s3... .C
s7be the CBB electric capacity of 1uF/50V; U1, U2...U7 are TF11, bypass protection circuit.
Civil power 1 connect a 2A fuse F1 after, be connected on the input of rectifier bridge, rectifier bridge is rectification chip DB157S, namely the B1 in Fig. 3, the low side of the output voltage of DB157S and the equal ground connection in one end (GND) of resistance R1, the resistance of R1 is 750k Ω, the other end of resistance R1 respectively with the input VH of current-limiting circuit G13, one end of electric capacity C2, one end of resistance R2 is connected with one end of electric capacity C1, the other end of electric capacity C2 and the equal ground connection of earth terminal GND of current-limiting circuit G13, the other end of electric capacity C1, the other end of resistance R2 and the grid of switching tube Q1 all with the output OUT of current-limiting circuit G13, the terminal Is of current-limiting circuit G13 is connected with the source electrode of switching tube Q1, switching tube Q1 is 3N80, the source electrode of switching tube Q1 and resistance R
sQone end connect, resistance R
sQother end ground connection, the drain electrode of switching tube Q1 and resistance R
s7the other end connect, the anode of LED01 is connected with the high-end of output voltage of rectification chip DB157S.The present invention adopts CBB electric capacity to replace traditional electrochemical capacitor, and the useful life of CBB electric capacity and the useful life of LED luminescence chip match, thus improves the useful life of LED lamp, meanwhile, also energy-conservation more economically, meets the built-in theme of energy-conserving and environment-protective.
Schematically above be described the utility model and execution mode thereof, this description does not have restricted, and also just one of the execution mode of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection range of the present utility model all should be belonged to.
Claims (7)
1. a no electrolytic capacitor driver; comprise rectifier bridge and switching tube; it is characterized in that; it also comprises bypass protection circuit, current-limiting circuit and LED; the output cathode of rectifier bridge is connected with the input of current-limiting circuit, and the output of current-limiting circuit is connected with the input of switching tube, and the output of switching tube is connected with the input of bypass protection circuit; the output of bypass protection circuit is connected with one end of LED group, and the other end of LED group is connected with the output negative pole of rectifier bridge.
2. a kind of no electrolytic capacitor driver according to claim 1, it is characterized in that, described bypass protection circuit has 7, connects successively between each bypass protection circuit.
3. a kind of no electrolytic capacitor driver according to claim 2, it is characterized in that, each bypass protection circuit is all connected in parallel on the two ends of LED.
4. a kind of no electrolytic capacitor driver according to claim 1, it is characterized in that, described rectifier bridge is rectification chip, and civil power is changed into direct current.
5. a kind of no electrolytic capacitor driver according to claim 1, is characterized in that, described bypass protection circuit is integrated circuit, the overcurrent that short circuit and open circuit for preventing LED cause and overvoltage phenomenon.
6. a kind of no electrolytic capacitor driver according to any one of claim 1-5, it is characterized in that, the capacity cell in the circuit of each module all adopts patch capacitor.
7. a kind of no electrolytic capacitor driver according to any one of claim 1-5, it is characterized in that, the capacity cell in the circuit of each module all adopts CBB electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520642337.2U CN204836733U (en) | 2015-08-21 | 2015-08-21 | No electrolytic capacitor driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520642337.2U CN204836733U (en) | 2015-08-21 | 2015-08-21 | No electrolytic capacitor driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204836733U true CN204836733U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520642337.2U Expired - Fee Related CN204836733U (en) | 2015-08-21 | 2015-08-21 | No electrolytic capacitor driver |
Country Status (1)
| Country | Link |
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| CN (1) | CN204836733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954304A (en) * | 2017-04-05 | 2017-07-14 | 安徽卓越电气有限公司 | A kind of large power long life-span AC LED lamp drive control circuit |
-
2015
- 2015-08-21 CN CN201520642337.2U patent/CN204836733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954304A (en) * | 2017-04-05 | 2017-07-14 | 安徽卓越电气有限公司 | A kind of large power long life-span AC LED lamp drive control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20170821 |