CN110519888A - A kind of LED drive circuit - Google Patents
A kind of LED drive circuit Download PDFInfo
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- CN110519888A CN110519888A CN201910828301.6A CN201910828301A CN110519888A CN 110519888 A CN110519888 A CN 110519888A CN 201910828301 A CN201910828301 A CN 201910828301A CN 110519888 A CN110519888 A CN 110519888A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention discloses a kind of LED drive circuits; including power supply circuit, driving circuit, LED module, switch module, constant-current driven module and control module; driving circuit includes overload protection module, rectification module and constant flow module; overload protection module connects power supply circuit output end, and overload protection module is sequentially connected rectification module and constant flow module；Constant flow module includes constant current submodule, spike cancellation module, output isolation module and output filter module, and constant current submodule connects rectification module output end, and driving circuit output end connects LED module；Power supply circuit includes savings battery unit, BMS battery management system, bidirectional converter unit and city's electric unit, and BMS battery management system is connect with savings battery unit, is used to acquire the state parameter of savings battery unit.The present invention eliminates electromagnetic interference influence by setting rectification module and constant flow module, is eliminated using spike and is filtered with output, completely eliminated ripple current, also eliminate the stroboscopic phenomenon of LED module.
Description
Technical field
The present invention relates to technical field of LED illumination, specially a kind of LED drive circuit.
Background technique
As LED is in the different application demand of every field, LED drive circuit is also being constantly progressive and is developing.Relative to
Conventional light source, LED have significant advantage: it is the process that light is directly changed by electric energy that LED, which shines,.Compare conventional light source,
If incandescent lamp is first converted into thermal energy by electric energy, the luminescence process of luminous energy is then converted to by thermal energy again, LED has high photosynthetic efficiency, section
The advantage of energy, furthermore under drive condition appropriate, LED light has the characteristics that the service life is long.LED has luminescence response block simultaneously,
Light source moulding is changeable, and the flexible advantage of Color control, LED are compared with conventional light source has good low-temperature characteristics.And it is not present
The environmental contaminants such as mercury, lead, thus it is more environmentally protective.
With popularizing for intelligent appliance, people have been not only limited to switch to the control of household electrical appliances, but pass through control service
Device is remotely controlled, but is easy to produce electromagnetic interference in intelligent control, to influence the normal of family's LED drive system
Work.
Summary of the invention
The purpose of the present invention is to provide a kind of LED drive circuits, to solve the problems mentioned in the above background technology.
To achieve the above object, it the invention provides the following technical scheme: a kind of LED drive circuit, including power supply circuit, drives
Dynamic circuit, LED module, switch module, constant-current driven module and control module, the driving circuit include overload protection module,
Rectification module and constant flow module, overload protection module connect power supply circuit output end, and overload protection module is sequentially connected rectification mould
Block and constant flow module；The constant flow module includes constant current submodule, spike cancellation module, output isolation module and output filtering mould
Block, constant current submodule connect rectification module output end, and driving circuit output end connects LED module；The power supply circuit includes storage
Secondary battery unit, BMS battery management system, bidirectional converter unit and city's electric unit, BMS battery management system and savings battery
Unit connection is used to acquire the state parameter of savings battery unit, and the charge and discharge of battery system are determined according to state parameter.
Preferably, city's electric unit connects bidirectional converter unit, by bidirectional converter unit in savings battery unit
It is LED drive circuit and savings battery unit charging when feed.
Preferably, bidirectional converter unit output end connects driving circuit, and to drive circuitry and intelligent measurement is
No is to run under island mode.
Preferably, city's electric unit is also connected with electrical parameter acquisition unit and rectification filtering unit, and electrical parameter acquisition unit is used
In the electric current and voltage signal that acquire city's electric unit.
Preferably, the control terminal of the output end connection switch module of control module, switch module connect constant-current driven module
With LED module, by the way that constant-current driven module is arranged, so that the electric current in circuit is constant, i.e. the operating current of LED module is constant,
The jump of electric current when less LED module works, is further reduced LED stroboscopic phenomenon.
Preferably, the output end of input terminal connection the spike cancellation module and constant current submodule of isolation module, output are exported
The output end of isolation module connects output filter module, and the output end of output filter module connects LED module.
Compared with prior art, the beneficial effects of the present invention are:
The present invention eliminates electromagnetic interference influence by setting rectification module and constant flow module, by the way that BMS cell tube is arranged
Reason system and bidirectional converter unit, can realize to battery/alternating current seamless switching, it is ensured that LED module does not power off, two-way change
Whether it is the operation of isolated island pattern that stream device can judge automatically, and in grid-connected/off-network pattern switching, can transient response, and driving
It eliminates using spike in circuit and exports filtering, completely eliminate ripple current, also eliminate the stroboscopic phenomenon of LED module.
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is the structural schematic diagram of power supply circuit of the present invention.
In figure: 1, power supply circuit；101, battery unit is saved；102, BMS battery management system；103, bidirectional converter list
Member；104, city's electric unit；105, electrical parameter acquisition unit；106, rectification filtering unit；2, driving circuit；21, overload protection mould
Block；22, rectification module；23, constant flow module；231, constant current submodule；232, spike cancellation module；233, isolation module is exported；
234, output filter module；3, LED module；4, switch module；5, constant-current driven module；6, control module.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal"
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of LED drive circuit, including power supply circuit 1, driving
Circuit 2, LED module 3, switch module 4, constant-current driven module 5 and control module 6, the driving circuit 2 include overload protection mould
Block 21, rectification module 22 and constant flow module 23, overload protection module 21 connect 1 output end of power supply circuit, overload protection module 21
It is sequentially connected rectification module 22 and constant flow module 23；The constant flow module 23 includes constant current submodule 231, spike cancellation module
232, output isolation module 233 and output filter module 234, constant current submodule 231 connect 23 output end of rectification module, driving electricity
2 output end of road connects LED module 3；The power supply circuit 1 includes savings battery unit 101, BMS battery management system 102, double
To converter cell 103 and city's electric unit 104, BMS battery management system 102 is connect with savings battery unit 101, is used to adopt
The state parameter of collection savings battery unit 101, and the charge and discharge according to state parameter judgement battery system.
Specifically, city's electric unit 104 connects bidirectional converter unit 103, saved by bidirectional converter unit 103
It charges when battery unit 101 is fed for driving circuit 2 and savings battery unit 101, savings battery unit 101 is disconnected in alternating current
It is that LED module 3 is powered by savings battery unit 101 when electric.
Specifically, 103 output end of bidirectional converter unit connects driving circuit 2, powers to driving circuit 2 and intelligently examine
Whether survey is to run under island mode.
Specifically, city's electric unit 104 is also connected with electrical parameter acquisition unit 105 and rectification filtering unit 106, electrical parameter is adopted
Collection unit 105 is used to acquire the electric current and voltage signal of city's electric unit 104.
Specifically, the control terminal of the output end connection switch module 4 of control module 6, switch module 6 connects constant current and drives mould
Block 5 and LED module 3, by the way that constant-current driven module 5 is arranged, so that the electric current in circuit is constant, i.e. the operating current of LED module 3
Constant, the jump of electric current when less LED module works is further reduced LED stroboscopic phenomenon.
Specifically, output isolation module 233 input terminal connection spike cancellation module 232 and constant current submodule 231 it is defeated
Outlet, the output end of output isolation module 233 connect output filter module 234, the output end connection of output filter module 234
LED module 3.
The present invention eliminates electromagnetic interference influence by setting rectification module 22 and constant flow module 23, passes through setting BMS electricity
Pond management system 102 and bidirectional converter unit 103, can realize to battery/alternating current seamless switching, it is ensured that LED module 3 is not
Power-off, whether it is the operation of isolated island pattern that bidirectional converter can judge automatically, and in grid-connected/off-network pattern switching, can transient response,
And eliminate using spike in driving circuit 2 and export filtering, ripple current is completely eliminated, LED module 3 is also eliminated
Stroboscopic phenomenon.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of LED drive circuit, which is characterized in that including power supply circuit (1), driving circuit (2), LED module (3), switch
Module (4), constant-current driven module (5) and control module (6), the driving circuit (2) include overload protection module (21), rectification
Module (22) and constant flow module (23), overload protection module (21) connect power supply circuit (1) output end, overload protection module (21)
It is sequentially connected rectification module (22) and constant flow module (23)；The constant flow module (23) includes that constant current submodule (231), spike disappear
Except module (232), output isolation module (233) and output filter module (234), constant current submodule (231) connect rectification module
(23) output end, driving circuit (2) output end connect LED module (3)；The power supply circuit (1) includes savings battery unit
(101), BMS battery management system (102), bidirectional converter unit (103) and city's electric unit (104), BMS battery management system
(102) it is connect with savings battery unit (101), is used to acquire the state parameter of savings battery unit (101), and according to state
The charge and discharge of parameter decision battery system.
2. a kind of LED drive circuit according to claim 1, it is characterised in that: city's electric unit (104) connection is two-way
Converter cell (103) is driving circuit when saving battery unit (101) and feeding by bidirectional converter unit (103)
(2) and savings battery unit (101) are charged.
3. a kind of LED drive circuit according to claim 2, it is characterised in that: the bidirectional converter unit (103) is defeated
Outlet connects driving circuit (2), and to driving circuit (2) power supply and whether intelligent measurement is to run under island mode.
4. a kind of LED drive circuit according to claim 1, it is characterised in that: city's electric unit (104) is also connected with
Electrical parameter acquisition unit (105) and rectification filtering unit (106), electrical parameter acquisition unit (105) is for acquiring the alternating current list
The electric current and voltage signal of first (104).
5. a kind of LED drive circuit according to claim 1, it is characterised in that: the output end of the control module (6) connects
The control terminal of switch module (4) is connect, switch module (6) connects constant-current driven module (5) and LED module (3).
6. a kind of LED drive circuit according to claim 1, it is characterised in that: described to export the defeated of isolation module (233)
The output end for entering end connection spike cancellation module (232) and constant current submodule (231), exports the output end of isolation module (233)
It connects output filter module (234), the output end of output filter module (234) connects LED module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828301.6A CN110519888A (en) | 2019-09-03 | 2019-09-03 | A kind of LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828301.6A CN110519888A (en) | 2019-09-03 | 2019-09-03 | A kind of LED drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110519888A true CN110519888A (en) | 2019-11-29 |
Family
ID=68630506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828301.6A Pending CN110519888A (en) | 2019-09-03 | 2019-09-03 | A kind of LED drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110519888A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535995Y (en) * | 2002-02-07 | 2003-02-12 | 谢金木 | Drive circuit device of LED lamp |
| CN203261043U (en) * | 2013-04-12 | 2013-10-30 | 广西科普仕能源有限公司 | Battery energy storage system |
| CN203840584U (en) * | 2014-01-16 | 2014-09-17 | 启东市众恒源照明科技有限公司 | LED drive circuit and LED light fixture |
| US20150195878A1 (en) * | 2014-01-06 | 2015-07-09 | Garrity Power Services Llc | Led driver |
| CN105848357A (en) * | 2016-05-19 | 2016-08-10 | 江苏明钰新能源有限公司 | LED drive circuit capable of resisting electromagnetic interference |
| CN205489525U (en) * | 2016-03-04 | 2016-08-17 | 易事特集团股份有限公司 | Uninterruptible power supply system |
| CN206195362U (en) * | 2016-11-07 | 2017-05-24 | 云南耀创能源开发有限公司 | Photovoltaic microgrid grid -connected electricity generation system |
| CN207382062U (en) * | 2017-08-04 | 2018-05-18 | 广东电网有限责任公司电力科学研究院 | Combined modular movable energy storage system |
-
2019
- 2019-09-03 CN CN201910828301.6A patent/CN110519888A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535995Y (en) * | 2002-02-07 | 2003-02-12 | 谢金木 | Drive circuit device of LED lamp |
| CN203261043U (en) * | 2013-04-12 | 2013-10-30 | 广西科普仕能源有限公司 | Battery energy storage system |
| US20150195878A1 (en) * | 2014-01-06 | 2015-07-09 | Garrity Power Services Llc | Led driver |
| CN203840584U (en) * | 2014-01-16 | 2014-09-17 | 启东市众恒源照明科技有限公司 | LED drive circuit and LED light fixture |
| CN205489525U (en) * | 2016-03-04 | 2016-08-17 | 易事特集团股份有限公司 | Uninterruptible power supply system |
| CN105848357A (en) * | 2016-05-19 | 2016-08-10 | 江苏明钰新能源有限公司 | LED drive circuit capable of resisting electromagnetic interference |
| CN206195362U (en) * | 2016-11-07 | 2017-05-24 | 云南耀创能源开发有限公司 | Photovoltaic microgrid grid -connected electricity generation system |
| CN207382062U (en) * | 2017-08-04 | 2018-05-18 | 广东电网有限责任公司电力科学研究院 | Combined modular movable energy storage system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191129 |
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| WD01 | Invention patent application deemed withdrawn after publication |