CN108347805B - Driving circuit compatible with ballast and LED device - Google Patents
Driving circuit compatible with ballast and LED device Download PDFInfo
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- CN108347805B CN108347805B CN201810172279.XA CN201810172279A CN108347805B CN 108347805 B CN108347805 B CN 108347805B CN 201810172279 A CN201810172279 A CN 201810172279A CN 108347805 B CN108347805 B CN 108347805B
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- 238000001514 detection method Methods 0.000 claims description 40
- 230000001939 inductive effect Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 4
- 102100031024 CCR4-NOT transcription complex subunit 1 Human genes 0.000 description 4
- 101000919674 Caenorhabditis elegans CCR4-NOT transcription complex subunit let-711 Proteins 0.000 description 4
- 101000919672 Homo sapiens CCR4-NOT transcription complex subunit 1 Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005669 field effect Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The scheme discloses a driving circuit compatible with a ballast and an LED device, and the driving circuit controls a constant current driving module (104) to drive an LED lamp (106) by detecting that the LED lamp is connected with an inductance ballast; when the electronic ballast is detected to be connected, the constant current driving module (104) is turned off, and the current limiting module (103) is controlled to drive the LED lamp (106), so that the LED lamp (106) is prevented from being burnt out by voltage generated by starting in the starting stage of the electronic ballast, the driving effect of the compatible ballast for the LED lamp (106) is realized, and the problem that the LED lamp is burnt out in the starting moment due to the fact that the compatible ballast cannot be used when the LED lamp replaces a fluorescent lamp in the existing LED lamp driving technology is solved.
Description
Technical Field
The invention belongs to the technical field of electronic circuits, and particularly relates to a driving circuit compatible with a ballast and an LED device.
Background
Fluorescent lamps have found wide use in the field of lighting for the last decades. And the fluorescent lamp needs to be driven by a ballast, and the ballast is divided into an inductive ballast and an electronic ballast. Whichever type of ballast requires a high voltage ignition of about 1000V at start-up to ignite the fluorescent lamp.
In normal operation, since the impedance of the fluorescent lamp is negative, the operating current is limited by the inductive ballast or the electronic ballast to operate stably and reliably. Therefore, the conventional fluorescent lamp has an inductive ballast or an electronic ballast matched with the conventional fluorescent lamp. For the inductive ballast, the technical scheme is basically not quite different; the electronic ballast has various technical schemes such as common preheating, chip preheating, quick start, instant start and the like, and various protections such as open circuit, short circuit, service life end and the like.
LED lamp lighting is a hotspot and trend in lighting development today. As a new generation of lighting scheme, compared with fluorescent lamp lighting scheme, it has the advantages of energy saving, no mercury, stable and long service life, etc., and the driving requirement is relatively simple, and it does not need high voltage starting nor preheating, and it can implement flow driving operation only by using a constant current.
In the existing LED lamp driving technology, most of the LED lamps can only be input by mains supply, and if the LED lamps are directly adopted in the traditional fluorescent lamp lighting lamp to replace fluorescent lamps, the ballast needs to be taken out and the circuit wiring of the lamp needs to be re-dimmed, otherwise, the replaced LED lamps are directly burnt out by the high voltage of hundreds to thousands of volts generated when the ballast is started.
Therefore, the existing LED lamp driving technology has the problem that when the LED lamp replaces a fluorescent lamp, the LED lamp is burnt out at the starting moment due to the fact that the ballast cannot be compatible.
Disclosure of Invention
The invention aims to provide a driving circuit compatible with a ballast and an LED device, and aims to solve the problem that when an LED lamp replaces a fluorescent lamp in the existing LED lamp driving technology, the LED lamp is burnt out at the moment of starting because the ballast cannot be compatible with the LED lamp.
A first aspect of the present invention provides a ballast-compatible driving circuit for receiving a power signal, the driving circuit comprising:
a rectifying module for rectifying the power supply signal;
the detection selection module is used for detecting the connection of the electronic ballast or the inductive ballast and correspondingly outputting a first control signal or a second control signal;
the current limiting module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the first control signal; and
and the constant current driving module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the second control signal.
A second aspect of the present invention provides an LED device comprising a driving circuit and a power supply signal for powering the driving circuit, the driving circuit comprising:
a rectifying module for rectifying the power supply signal;
the detection selection module is used for detecting the connection of the electronic ballast or the inductive ballast and correspondingly outputting a first control signal or a second control signal;
the current limiting module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the first control signal; and
and the constant current driving module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the second control signal.
According to the driving circuit and the LED device compatible with the ballast, the constant current driving module is controlled to drive the LED lamp by detecting the connected inductive ballast; when the electronic ballast is connected, the constant current driving module is turned off, and the current limiting module is controlled to drive the LED lamp, so that the LED lamp is prevented from being burnt out by voltage generated by starting in the starting stage of the electronic ballast, the driving effect of the compatible ballast for the LED lamp is realized, and the problem that the LED lamp is burnt out at the moment of starting due to the fact that the compatible ballast cannot be used when the LED lamp replaces a fluorescent lamp in the existing LED lamp driving technology is solved.
Drawings
Fig. 1 is a schematic block diagram of a driving circuit of a compatible ballast according to the present invention.
Fig. 2 is an exemplary circuit diagram of a ballast-compatible driver circuit provided by the present invention.
Fig. 3 is an exemplary circuit diagram of a ballast-compatible driver circuit access inductive ballast provided in accordance with a first embodiment of the present invention.
Fig. 4 is a circuit diagram of an example of a ballast-compatible driver circuit connected to an electronic ballast according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The driving circuit and the LED device compatible with the ballast can be directly connected with the mains supply input and can also be compatible with an inductive ballast or an electronic ballast. When the input is judged to be the commercial power or the inductive ballast, the constant current driving module is utilized to drive the LED lamp to work; when the input is judged to be the electronic ballast, all the driving circuits and the LED lamps are turned off firstly until the electronic ballast completes a high-voltage starting stage, and then the electronic ballast is switched to the current limiting module to drive the LED lamps to work, so that the high voltage generated by starting is prevented from damaging the driving circuits and the LED lamps in the starting stage of the electronic ballast.
Fig. 1 shows a block structure of a driving circuit of a compatible ballast provided by the present invention, and for convenience of explanation, only the portions related to the present embodiment are shown in detail as follows:
the driving circuit compatible with the ballast is connected with a power supply signal 101, and comprises a rectifying module 102, a detection selecting module 105, a current limiting module 103 and a constant current driving module 104.
The rectifying module 102 is configured to rectify the power signal 101.
The detection selection module 105 is configured to detect that the electronic ballast or the inductive ballast is connected, and output a first control signal or a second control signal accordingly.
The current limiting module 103 is connected to the rectifying module 102 and the detection selecting module 105, and is configured to drive the LED lamp 106 according to the first control signal.
The constant current driving module 104 is connected with the rectifying module 102 and the detection selecting module 105, and is used for driving the LED lamp 106 according to the second control signal.
In the driving circuit, when the input power signal 101 is the mains supply or passes through the inductive ballast, the detection selection module 105 selects the constant current driving module 104 to provide energy for the LED lamp 106, and turns off the current limiting module 103; when the input power signal 101 passes through the electronic ballast, the detection selection module 105 turns off all circuits first until the electronic ballast completes high-voltage starting, the current limiting module 103 is selected to provide energy for the LED lamp 106, and the constant current driving module 104 is turned off.
Fig. 2 shows an exemplary circuit of a driving circuit of a compatible ballast provided by the present invention, and for convenience of explanation, only the portions related to the present embodiment are shown in detail as follows:
as an embodiment of the present invention, the rectifying module 102 includes a rectifying bridge, the rectifying bridge includes a first rectifying diode ZD1, a second rectifying diode ZD2, a third rectifying diode ZD3, and a fourth rectifying diode ZD4, a first ac input end and a second ac input end of the rectifying bridge are connected to the power signal 101, a first dc output end of the rectifying bridge is grounded, and a second dc output end of the rectifying bridge is an output end of the rectifying module 102.
As an embodiment of the present invention, the detection selection module 105 includes a gate switch SW1, a mechanical switch SW2, an inverter NOT1, and a detection chip U1;
the controlled end (i.e. the 1 st pin IN fig. 2) of the gating switch SW1 is connected with the rectifying module 102, the first gating end (i.e. the 2 nd pin IN fig. 2) of the gating switch SW1 is connected with the constant current driving module 104, the second gating end (i.e. the 3 rd pin IN fig. 2) of the gating switch SW1 is connected with the first end of the mechanical switch SW2, the second end of the mechanical switch SW2 is grounded, the input end IN1 and the first output end OUT1 of the detecting chip U1 are connected with the current limiting module 103, the second output end OUT2 of the detecting chip U1 is connected with the input end of the inverter NOT1, and the output end of the inverter NOT1 is connected with the constant current driving module 104. In this embodiment, the detection chip U1 is a detection chip with a model of LTC1403ACMSE, and of course, the model of the detection chip is not limited, so long as the function of the detection chip U1 in this embodiment can be achieved. Specifically, the detection chip U1 may also be replaced by an existing detection gating circuit, so long as the functional effects described in the detection chip U1 of this embodiment can be achieved.
As an embodiment of the present invention, the current limiting module 103 includes a current limiting chip U2, an input end (i.e. the 5 th pin of fig. 2) and an output end (i.e. the 6 th pin of fig. 2) of the current limiting chip U2 are connected to the detection selecting module 105, a controlled end (i.e. the 3 rd pin of fig. 2) of the current limiting chip U2 is connected to the rectifying module 102, a ground end (i.e. the 4 th pin of fig. 2) of the current limiting chip U2 is grounded, and a first serial port end (i.e. the 1 st pin of fig. 2) and a second serial port end (i.e. the 2 nd pin of fig. 2) of the current limiting chip U2 are respectively connected to the first detection terminal R1 and the second detection terminal R2. In this embodiment, the current limiting chip U2 is a current limiting chip with a model RT9701YB1721, which is, of course, not limited, as long as the function of the current limiting chip U2 in this embodiment can be achieved. Specifically, the current limiting chip U2 may be replaced by an existing current limiting circuit, so long as the function of the current limiting chip U2 of the present embodiment can be achieved.
As an embodiment of the invention, the constant current driving module 104 includes a first capacitor C1, a second capacitor C2, a first inductor L1, a first diode D1, a first switching tube Q1, and a control circuit;
the first end of the first capacitor C1 is commonly connected with the first end of the first inductor L1 and is connected with the rectifying module 102, the second end of the first capacitor C1 is grounded, the second end of the first inductor L1 is commonly connected with the anode of the first diode D1 and the input end of the first switch tube Q1, the input end of the control circuit is connected with the detection selection module 105, the output end of the control circuit is connected with the controlled end of the first switch tube Q1, the output end of the first switch tube Q1 is grounded, the cathode of the first diode D1 is connected with the first end of the second capacitor C2, and the second end of the second capacitor C2 is connected with the detection selection module 105. The first switching tube Q1 may be a field effect tube or a triode, where the drain, source and gate of the field effect tube correspond to the input end, output end and controlled end of the first switching tube Q1 respectively, and the collector, emitter and base of the triode correspond to the input end, output end and controlled end of the first switching tube Q1 respectively. The control circuit is a prior art, and controls the constant current driving module 104.
Fig. 3 shows an exemplary circuit of a compatible ballast driver circuit to an inductive ballast according to a first embodiment of the present invention, and for convenience of explanation, only the portions relevant to this embodiment are shown, as follows:
as an embodiment of the present invention, when the input ACL and ACN are connected to the VCC or pass through the inductive ballast ZL1, the detection selection module 105 detects that the first detection terminal R1 and the second detection terminal R2 are NOT connected, and then outputs the second control signal to make the mechanical switch SW2 keep off, the controlled end of the SW1 gating switch is connected to the second gating end, and the inverter NOT1 makes the control circuit work. At this time, the mains supply VCC is directly input or passes through the inductive ballast ZL1, and sequentially passes through the rectifier bridge, the first capacitor C1, the first inductor L1, the first diode D1, the second capacitor C2, the first switching tube Q1, the control circuit and the gate switch SW1, and then provides energy to the LED lamp 106 (represented by the light emitting diode D2 in fig. 3).
Fig. 4 shows an example circuit of a compatible ballast driver circuit for accessing an electronic ballast according to a second embodiment of the present invention, and for convenience of explanation, only the portions related to this embodiment are shown, as follows:
as an embodiment of the present invention, when the input is connected to the electronic ballast ZL2, the detection selection module 105 keeps all driving circuits turned off through the second output end by detecting that the first detection terminal R1 and the second detection terminal R2 are respectively connected to the 4 th pin and the 3 rd pin of the electronic ballast ZL1 until the start-up and the preheating period of the electronic ballast ZL1 are completed, and then outputs the first control signal to make the mechanical switch SW2 turned on, the controlled end of the gating switch SW1 is connected to the first gating end, and the control circuit is turned off through the inverter NOT 1. At this time, the mains VCC supplies power to the LED lamp 106 (represented by the light emitting diode D2 in fig. 4) through the electronic ballast ZL1, the rectifier bridge, the current limiting module 103, the gate switch SW1, the mechanical switch SW2, and the second capacitor C2.
The invention also provides an LED device comprising a driving circuit as described above and a power signal for powering the driving circuit.
In summary, the driving circuit and the LED device compatible with the ballast provided by the embodiment of the invention control the constant current driving module to drive the LED lamp by detecting the connected inductive ballast; when the electronic ballast is connected, the constant current driving module is turned off, and the current limiting module is controlled to drive the LED lamp, so that the LED lamp is prevented from being burnt out by voltage generated by starting in the starting stage of the electronic ballast, the driving effect of the compatible ballast for the LED lamp is realized, and the problem that the LED lamp is burnt out at the moment of starting due to the fact that the compatible ballast cannot be used when the LED lamp replaces a fluorescent lamp in the existing LED lamp driving technology is solved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. A ballast-compatible driver circuit for receiving a power signal, the driver circuit comprising:
a rectifying module for rectifying the power supply signal;
the detection selection module is used for detecting the connection of the electronic ballast or the inductive ballast and correspondingly outputting a first control signal or a second control signal;
the current limiting module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the first control signal; and
the constant current driving module is connected with the rectifying module and the detection selecting module and is used for driving the LED lamp according to the second control signal;
the rectifying module comprises a rectifying bridge and is provided with a rectifying circuit,
the first alternating current input end and the second alternating current input end of the rectifier bridge are connected with the power supply signal, the first direct current output end of the rectifier bridge is grounded, and the second direct current output end of the rectifier bridge is the output end of the rectifier module;
the detection selection module comprises:
the device comprises a gating switch, a mechanical switch, an inverter and a detection chip;
the controlled end of the gating switch is connected with the rectifying module, the first gating end of the gating switch is connected with the constant current driving module, the second gating end of the gating switch is connected with the first end of the mechanical switch, the second end of the mechanical switch is grounded, the input end and the first output end of the detecting chip are connected with the current limiting module, the second output end of the detecting chip is connected with the input end of the phase inverter, and the output end of the phase inverter is connected with the constant current driving module;
the current limiting module comprises a current limiting chip,
the input end and the output end of the current limiting chip are connected with the detection selection module, the controlled end of the current limiting chip is connected with the rectification module, and the grounding end of the current limiting chip is grounded;
the constant current driving module includes:
the first capacitor, the second capacitor, the first inductor, the first diode, the first switch tube and the control circuit;
the first end of the first capacitor is connected with the first end of the first inductor in a sharing way and is connected with the rectifying module, the second end of the first capacitor is grounded, the second end of the first inductor is connected with the anode of the first diode and the input end of the first switch tube in a sharing way, the input end of the control circuit is connected with the detection selection module, the output end of the control circuit is connected with the controlled end of the first switch tube, the output end of the first switch tube is grounded, the cathode of the first diode is connected with the first end of the second capacitor, and the second end of the second capacitor is connected with the detection selection module.
2. An LED device comprising the ballast-compatible driving circuit of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810172279.XA CN108347805B (en) | 2018-03-01 | 2018-03-01 | Driving circuit compatible with ballast and LED device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810172279.XA CN108347805B (en) | 2018-03-01 | 2018-03-01 | Driving circuit compatible with ballast and LED device |
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| Publication Number | Publication Date |
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| CN108347805A CN108347805A (en) | 2018-07-31 |
| CN108347805B true CN108347805B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810172279.XA Active CN108347805B (en) | 2018-03-01 | 2018-03-01 | Driving circuit compatible with ballast and LED device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021051266A1 (en) * | 2019-09-17 | 2021-03-25 | 卡任特照明解决方案有限公司 | Driver for led device, led system, and adaptation method for led device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204231704U (en) * | 2014-10-23 | 2015-03-25 | 上海两高照明有限公司 | A kind of multipurpose replacement LED lamp tube |
| CN105848351A (en) * | 2016-05-09 | 2016-08-10 | 陈文军 | Compatible LED circuit |
| CN106658845A (en) * | 2016-12-20 | 2017-05-10 | 深圳市福瑞新科技有限公司 | Intelligent and fully compatible LED driving power supply circuit |
| CN106817800A (en) * | 2015-12-02 | 2017-06-09 | 通用电气照明解决方案有限公司 | Drive circuit and the LED comprising the drive circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9338853B2 (en) * | 2014-09-17 | 2016-05-10 | Greco Tech Industries Inc. | LED tube driver circuitry for ballast and non-ballast fluorescent tube replacement |
-
2018
- 2018-03-01 CN CN201810172279.XA patent/CN108347805B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204231704U (en) * | 2014-10-23 | 2015-03-25 | 上海两高照明有限公司 | A kind of multipurpose replacement LED lamp tube |
| CN106817800A (en) * | 2015-12-02 | 2017-06-09 | 通用电气照明解决方案有限公司 | Drive circuit and the LED comprising the drive circuit |
| CN105848351A (en) * | 2016-05-09 | 2016-08-10 | 陈文军 | Compatible LED circuit |
| CN106658845A (en) * | 2016-12-20 | 2017-05-10 | 深圳市福瑞新科技有限公司 | Intelligent and fully compatible LED driving power supply circuit |
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| CN108347805A (en) | 2018-07-31 |
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Address after: 528200 Three two-storey factories in Zone B of Longsha Guangdong New Light Source Industry Base, Luocun, Shishan Town, Nanhai District, Foshan City, Guangdong Province Applicant after: Foshan Chang Jing power supply Co.,Ltd. Address before: 528200 Three two-storey factories in Zone B of Longsha Guangdong New Light Source Industry Base, Luocun, Shishan Town, Nanhai District, Foshan City, Guangdong Province Applicant before: FOSHAN CHANGJING ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20231107 Address after: Room 303, building 2, Innovation smart port, 155 Hongtian Road, Huangpu Community, Xinqiao street, Bao'an District, Shenzhen, Guangdong 518000 Applicant after: SHENZHEN GCL SMART ENERGY CO.,LTD. Address before: 528200 Three two-storey factories in Zone B of Longsha Guangdong New Light Source Industry Base, Luocun, Shishan Town, Nanhai District, Foshan City, Guangdong Province Applicant before: Foshan Chang Jing power supply Co.,Ltd. |
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