WO2017035721A1 - 一种具有漏电保护功能的兼容型led灯管 - Google Patents

一种具有漏电保护功能的兼容型led灯管 Download PDF

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Publication number
WO2017035721A1
WO2017035721A1 PCT/CN2015/088532 CN2015088532W WO2017035721A1 WO 2017035721 A1 WO2017035721 A1 WO 2017035721A1 CN 2015088532 W CN2015088532 W CN 2015088532W WO 2017035721 A1 WO2017035721 A1 WO 2017035721A1
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WO
WIPO (PCT)
Prior art keywords
diode
capacitor
circuit
leakage protection
resistor
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PCT/CN2015/088532
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English (en)
French (fr)
Inventor
杨华胜
兰鸿海
Original Assignee
深圳市宝瑞恒业科技有限公司
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Application filed by 深圳市宝瑞恒业科技有限公司 filed Critical 深圳市宝瑞恒业科技有限公司
Priority to PCT/CN2015/088532 priority Critical patent/WO2017035721A1/zh
Publication of WO2017035721A1 publication Critical patent/WO2017035721A1/zh

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Classifications

    • 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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • 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]

Definitions

  • the invention relates to the field of illumination, in particular to a compatible LED lamp with leakage protection function.
  • LED lighting has become the hotspot of the industry with the most market potential. LED lighting has the advantages of energy saving, long service life, high luminous efficiency and high color rendering.
  • LEDs replace the traditional lighting market with huge prospects.
  • traditional fluorescent lamps need to be driven by electronic ballasts (see Figure 1, Figure 2 and Figure 3), while current LEDs are directly driven by AC mains (see figure 4 and Figure 5), can not be compatible with the existing fluorescent electronic ballast, when replacing the traditional fluorescent lamp with LED lighting, destroy the original fluorescent lamp system, remove the original ballast of the fluorescent lamp, and modify it to be directly driven by the mains .
  • the modification of the line will bring the following problems: 1) Modifying the line brings huge labor and time costs, and modifying the line of the lamp requires a professional licensed electrician. In Europe, the professional labor cost per professional electrician is about 70. In the euro, the traditional LED tube is replaced by a modified circuit, and about 7 tubes can be modified in one hour.
  • the cost of retrofitting a lamp is about 100 RMB. However, the current price of LED lamps exported is about 60-80 yuan, and the cost of retrofitting is higher than the cost of lamps. 2) Modifying the line will destroy the safety of the original lamps. Certification, in Europe and the United States, lamps are required to UL (Underwriters Laboratories, Underwriter Laboratories Inc.), VDE (Prufstelle Testing and Certification Institute, German Institute of Electrical Engineers) and TÜV (Technischer Kochwachüngs-Verein) and other safety certifications, and underwriting by insurance companies, once the modified line is deemed to have destroyed the original safety certification, the insurance company is not underwritten.
  • LED lamp single-ended power supply or double-ended power supply requires leakage current test and withstand voltage test.
  • the traditional fluorescent tube is powered by double-end.
  • the safety certification body can modify the safety standard to be double-ended. However, when one end is connected to the lamp, the other end is not charged to ensure safety. Then, some of the current products that are compatible with electronic ballasts cannot pass the leakage current and withstand voltage test.
  • the technical problem to be solved by the present invention is that the above modified circuit for the prior art may damage the safety certification of the original lamp, fail to pass the leakage current and withstand voltage test, and modify the labor cost and time cost of the line. It provides a compatible LED lamp with leakage protection that meets the safety certification of the original lamp, can pass the leakage current and withstand voltage test, save labor cost and time cost.
  • the technical solution adopted by the present invention to solve the technical problem thereof is: constructing a compatible LED lamp tube with leakage protection function, comprising a casing, an LED lamp string and a driving circuit, the driving circuit comprising an input judging matching circuit and a first control a circuit, a leakage protection circuit, a rectification filter circuit, a constant current switching power supply circuit, and an output filter control circuit, wherein the input judgment matching circuit is connected to both ends of the casing, and is configured to output low according to the input low frequency signal or high frequency signal a voltage or a high voltage, the first control circuit is connected to the input determination matching circuit, for receiving the low voltage or high voltage output by the input determination matching circuit, and correspondingly controlling the leakage protection circuit to be cut off or turned on, The leakage protection circuit is further connected to both ends of the casing, and the rectifier filter circuit is connected to the leakage protection circuit for receiving and rectifying a signal output by the leakage protection circuit, the constant current a switching power supply circuit is connected to the rectifying and filtering circuit,
  • the input judgment matching circuit includes a first capacitor, a second capacitor, a third capacitor, a first resistor, a first transformer, a first fuse, and a second fuse
  • one end of the outer casing is provided with a first pin and a second pin
  • the other end of the outer casing is provided with a third pin and a fourth pin
  • the first capacitor and the first resistor are connected in parallel
  • One end of the first capacitor is connected to the first pin
  • the other end of the first capacitor and the first resistor are connected in parallel with the second pin and the leakage protection circuit
  • the first capacitor and the first resistor are connected in parallel
  • One end is further connected to one end of the primary coil of the transformer through the second capacitor, and the other end of the primary coil of the transformer is respectively connected to one end of the first fuse and one end of the third capacitor, and the other of the first fuse
  • One end is connected to the third pin, and the other end of the third capacitor is connected to the fourth pin through the second fuse
  • the transformer is further connected to one end of the
  • the first control circuit includes a first diode, a second diode, a third diode, a fourth diode, and a a fifth diode, a fourth capacitor, a fifth capacitor, a sixth capacitor, a second resistor, a third resistor, and a MOS transistor, one end of the first diode, one end of the third diode, and a fourth capacitor
  • One end, one end of the second resistor is connected to the drain of the MOS transistor
  • the other end of the first diode is connected to one end of the second diode
  • the other end of the third diode is One end of the fourth diode is connected
  • the other end of the second resistor is respectively connected to one end of the fifth capacitor, the gate of the MOS transistor, and one end of the fifth diode, and the second diode
  • the leakage protection circuit includes a controllable switch.
  • controllable switch is a relay or a semiconductor switch.
  • the relay includes a first contact, a second contact, a third contact, a fourth contact, a fifth contact, and a sixth touch a first contact, a seventh contact and an eighth contact, the first contact being connected to the other end of the third resistor, the third contact being connected to the second pin, the eighth contact Connected to the other end of the sixth capacitor.
  • the rectification and filtering circuit includes a sixth diode, a seventh diode, an eighth diode, a ninth diode, and a tenth a diode, an eleventh diode, a twelfth diode, a thirteenth diode, a seventh capacitor, and an eighth capacitor, one end of the sixth diode, and one end of the eighth diode One end of the seventh capacitor is connected, and the other end of the sixth diode is respectively connected to one ends of the fourth contact and the seventh diode, and the other end of the eighth diode is respectively associated with the
  • the fifth contact is connected to one end of the ninth diode, the other end of the seventh diode, the other end of the ninth diode, and the other end of the seventh capacitor are grounded, the tenth diode One end of the twelfth diode is connected to one end of the eighth capacitor, and the other end of the tenth di
  • the other end of the twelfth diode is respectively connected to the other end of the third capacitor and one end of the thirteenth diode, the eleventh The other end of the pole tube, the other end of the thirteenth diode, and the other end of the eighth capacitor are grounded, and one end of the eighth capacitor is further connected to an input end of the constant current switching power supply circuit, The other end of the eight capacitor is also connected to the other input of the constant current switching power supply circuit.
  • the output filter control circuit includes a ninth capacitor, a fourth resistor, and a fourteenth diode, and one end of the ninth capacitor is respectively One end of the fourteenth diode is connected to one output end of the constant current switching power supply circuit, and the other end of the fourteenth diode is respectively connected to one end of the fourth resistor and one end of the seventh capacitor.
  • the other end of the ninth capacitor is respectively connected to the other end of the fourth resistor and the other output end of the constant current switching power supply circuit, and one end of the fourth resistor is further connected to one end of the LED string.
  • the other end of the fourth resistor is also coupled to the other end of the LED string.
  • the rectification and filtering circuit includes a fourteenth diode, a fifteenth diode, a sixteenth diode, and a seventeenth pole a tube, an eighteenth diode, a nineteenth diode, and a tenth capacitor, one end of the fourteenth diode, one end of the sixteenth diode, one end of the eighteenth diode, and a first One end of the ten capacitor is connected to one input end of the constant current switching power supply circuit, and the other end of the fourteenth diode is respectively connected to one end of the fourth contact and the fifteenth diode.
  • the other end of the sixteenth diode is respectively connected to one end of the third capacitor and one end of the seventeenth diode, and the other end of the eighteenth diode is respectively connected with the third capacitor
  • One end is connected to one end of the nineteenth diode, the other end of the fifteenth diode, the other end of the seventeenth diode, the other end of the nineteenth diode, and the other end of the tenth capacitor
  • the other output of the constant current switching power supply circuit is grounded.
  • the output filter control circuit includes a ninth capacitor and a fourth resistor, and one end of the ninth capacitor and the fourth resistor are connected in parallel with the constant An output end of the flow switching power supply circuit is connected to one end of the LED light string, and the other end of the ninth capacitor and the fourth resistor are connected in parallel with another output end of the constant current switching power supply circuit and the other end of the LED light string connection.
  • the driving circuit includes an input judgment matching circuit, a first control circuit, a leakage protection circuit, a rectification filter circuit, and a constant current switch.
  • the power circuit and the output filter control circuit, the input judgment matching circuit is configured to output a low voltage or a high voltage according to the input low frequency signal or the high frequency signal, and the first control circuit is configured to cut off the leakage protection circuit according to the low voltage or the high voltage.
  • the test leakage current of the two points of the LED lamp can be less than the safety value
  • the rectification filter circuit and the signal for receiving the output of the leakage protection circuit are rectified and filtered
  • the constant current switching power supply The circuit and the signal for receiving the output of the rectifying and filtering circuit are subjected to constant current processing, and the output filtering control circuit is configured to receive the signal output by the constant current switching power supply circuit and filter the LED lamp string to emit light, so that no need is performed Modify the line, so it meets the safety certification of the original luminaire, can pass the leak Flow and pressure tests, saving labor and time costs.
  • FIG. 1 is a schematic diagram of a line connection of a conventional fluorescent lamp illumination system with an electronic ballast in a conventional art
  • FIG. 2 is a schematic diagram of another line connection of a conventional fluorescent lamp illumination system with an electronic ballast in the prior art
  • FIG. 3 is a schematic diagram of still another line connection of a conventional fluorescent lamp illumination system with an electronic ballast in the prior art
  • FIG. 4 is a schematic diagram of a line connection of an LED lighting system in a conventional technology
  • FIG. 5 is a schematic diagram of another line connection of an LED lighting system in a conventional technology
  • FIG. 6 is a structural block diagram of an embodiment of a compatible LED lamp having a leakage protection function according to the present invention.
  • FIG. 7 is a schematic diagram of leakage current testing of a compatible LED lamp having a leakage protection function in the embodiment
  • FIG. 8 is a schematic diagram showing the circuit structure of a compatible LED lamp having a leakage protection function in one embodiment
  • FIG. 9 is a schematic diagram showing the circuit structure of a compatible LED lamp having a leakage protection function in another embodiment
  • FIG. 10 is a circuit connection diagram of a compatible LED lamp having a leakage protection function in the first case in the first embodiment
  • FIG. 11 is a circuit connection diagram of a compatible LED lamp having a leakage protection function in the second embodiment
  • Figure 12 is a circuit connection diagram of the compatible LED lamp with leakage protection function in the third case in the third embodiment
  • Figure 13 is a line connection diagram of a compatible type of LED lamp having a leakage protection function in the fourth embodiment in the embodiment.
  • FIG. 1 a structural block diagram of the compatible LED lamp tube with leakage protection function is shown in FIG. 1 .
  • the input determination matching circuit 11, the first control circuit 12, the leakage protection circuit 13, the rectification filter circuit 14, the constant current switching power supply circuit 15, and the output filter control circuit 16 constitute a drive circuit, which is compatible with the leakage protection function.
  • the LED lamp tube includes a housing (not shown), an LED string and a driving circuit, wherein the input judging matching circuit 11 is connected to both ends of the housing (not shown) for inputting a low frequency signal or high The frequency signal correspondingly outputs a low voltage or a high voltage, and the first control circuit 12 is connected to the input determination matching circuit 11 for receiving the low voltage or high voltage output by the input determination matching circuit 11, and correspondingly controlling the leakage protection circuit 13 to be turned off or on.
  • the input judgment matching circuit 11 when the input is low frequency (50 Hz/60 Hz), the input judgment matching circuit 11 outputs a low voltage to the first control circuit 12, and the first control circuit 12 cuts (closes) the control leakage protection circuit 13 to make the compatible LED
  • the test leakage current at both ends of the lamp is less than the safe value.
  • the input judgment matching circuit 11 determines the high voltage output to the first control circuit 12, a first control circuit 12 to control leakage protection circuit 13 is turned on (opened).
  • the low voltage or the high voltage outputted by the input judging matching circuit 11 is an alternating voltage. In the embodiment, when the voltage outputted by the input judging matching circuit 11 is less than 3V, it is considered to be The low voltage is considered to be a high voltage if the voltage output from the judgment matching circuit 11 is 3 V or more.
  • a and B are one end of the outer casing (that is, one end of a compatible LED tube), and C and D are the other end of the outer casing (also referred to as a compatible LED tube).
  • the live line L and the neutral line N are connected to the rectifying and filtering circuit 14 from the same side A and B inputs of the compatible LED tube, and then connected to the constant current switching power supply circuit 15 and the output in turn.
  • Filter control circuit 16 When the compatible LED lamp is connected to the electronic ballast, since the voltage of the conventional fluorescent lamp is the voltage across the lamp, the high frequency voltage output by the electronic ballast is connected to both ends of the compatible LED lamp, and the input is judged.
  • the matching circuit 11 is respectively connected to two ends of the compatible LED tube (one end is connected to A and B, and the other end is connected to C and D).
  • the input judging circuit matches the output high voltage to the first control circuit.
  • the first control circuit 12 turns on the control leakage protection circuit 13. This can pass the leakage current and withstand voltage test.
  • the leakage protection circuit is further connected to both ends of the casing (not shown), and the rectifier filter circuit 14 is connected to the leakage protection circuit 13 for receiving the signal output by the leakage protection circuit 13 (the leakage protection circuit 13 is When the signal is turned on, the signal can be output, and the received signal is rectified and filtered.
  • the constant current switching power supply circuit 15 is connected to the rectifying and filtering circuit 14 for receiving the signal output by the rectifying and filtering circuit 14, and performing constant current processing on the received signal.
  • the output filter control circuit 16 is connected to the constant current switching power supply circuit 15 for receiving the signal output by the constant current switching power supply circuit 15, and filtering the received signal to drive the LED light string to emit light.
  • the invention converts the high frequency electric energy outputted by the alternating current or the electronic ballast into a compatible type of LED tube capable of stably driving the LED string to emit light.
  • the compatible LED tube with leakage protection function can be adapted to the newly installed LED market driven directly by AC power, and is also suitable for the application of the traditional fluorescent lamp renewal and modification.
  • the invention can directly remove the original fluorescent tube without modifying the line. Replace the compatible LED tube, which does not require a professional electrician, and the replacement can be completed in only a few seconds, thus saving a lot of labor and time costs.
  • FIG. 7 is a schematic diagram of leakage current test of a compatible LED lamp with leakage protection function in the present embodiment.
  • one end of the compatible LED lamp is connected to an AC mains hot wire (50 Hz/60 Hz), and the compatible LED lamp
  • the other end of the tube is connected to the ground (Grand) through an equivalent resistor.
  • the safety requirement is that the leakage is less than a certain safe value.
  • the input judgment matching circuit 11 is respectively connected to the two ends of the compatible LED tube (one end is connected to A and B). The other end is connected to C and D).
  • the input judgment matching circuit 11 When the input is low frequency (50 Hz/60 Hz), the input judgment matching circuit 11 outputs a low voltage to the first control circuit 12, and the first control circuit 12 turns off the control leakage protection circuit 13 so that The test leakage current at both ends of the compatible LED lamp is less than the safe value.
  • the input determination matching circuit 11 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a first transformer T1, a first fuse F1, and a second fuse F2, wherein One end of the outer casing is provided with a first pin C and a second pin D, and the other end of the outer casing is provided with a third pin A and a fourth pin B, and the first capacitor C1 and the first resistor R1 are connected in parallel, and the first capacitor C1 One end connected in parallel with the first resistor R1 is connected to the first pin C, and the other end of the first capacitor C1 and the first resistor R1 are connected in parallel with the second pin D and the leakage protection circuit 13, respectively, the first capacitor C1 and the first The other end of the resistor R1 in parallel is also connected to one end of the primary coil of the transformer through a second capacitor C2, and the other end of the primary coil of the transformer is respectively connected to one end of the first fuse F1 and one end of the third capacitor C3, the first
  • the first capacitor C1 and the first resistor R1 connected between the first pin C and the second pin D simulate the fluorescent lamp filament.
  • the second capacitor C2 and the transformer T1 are connected in series between the two ends of the compatible LED tube (the third pin A, the fourth pin B) and the (first pin C, the second pin D) to form a ballast
  • the matching device is connected to the electronic ballast, and the high-frequency voltage across the compatible LED tube forms a loop with the transformer T1 through the second capacitor C2, and the high-frequency voltage is coupled to the transformer secondary coil through the transformer T1.
  • the first control circuit 12 includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, and a fourth capacitor C4.
  • One end of the fourth capacitor C4, one end of the second resistor R2 and the drain of the MOS transistor Q1 are connected, and the other end (anode) of the first diode D1 is connected to one end (cathode) of the second diode D2,
  • the other end (anode) of the three diode D3 is connected to one end (cathode) of the fourth diode D4, and the other end of the second resistor R2 is respectively connected to one end of the fifth capacitor C5, the gate of
  • One end (cathode) of the diode D5 is connected, the other end (anode) of the second diode D2, the other end (anode) of the fourth diode D4, the other end of the fourth capacitor C4, and the fifth capacitor C5
  • the other end is connected to the other end (anode) of the fifth diode D5, and one end of the secondary winding of the transformer is connected to one end (cathode) of the fourth diode D4.
  • the other end of the second capacitor C6 is connected to one end of the second capacitor C2, and one end of the sixth capacitor C6 is connected to the source of the MOS transistor Q1 and one end of the third resistor R3, respectively, and the other end of the sixth capacitor C6 is respectively
  • the other end (anode) of the fifth diode D5 is connected to the leakage protection circuit 13, and the other end of the third resistor R3 is connected to the leakage protection circuit 13.
  • the high voltage outputted by the input judging matching circuit 11 is connected to the gate of the MOS transistor Q1 and the cathode of the fifth diode D5 through the second resistor R2, by the first control
  • the circuit 12 controls the leakage protection circuit 13.
  • the MOS transistor Q1 is an N-channel MOS transistor.
  • the leakage protection circuit 13 includes a controllable switch S1.
  • the controllable switch S1 can be a relay or a semiconductor switch, and the semiconductor switch can be a thyristor or a MOS tube or the like.
  • the relay S1 is employed in this embodiment.
  • the relay S1 includes a first contact 1, a second contact 2, a third contact 3, a fourth contact 4, a fifth contact 5, a sixth contact 6, and a seventh contact 7 and The eighth contact 8, the first contact 1 is connected to the other end of the third resistor R3, the third contact 3 is connected to the second pin D, and the eighth contact 8 is connected to the other end of the sixth capacitor C6.
  • the first control circuit 12 When the compatible LED tube is connected to the electronic ballast, the first control circuit 12 inputs a driving signal to the control terminals (the first contact 1 and the eighth contact 8) of the relay S1, and the control relay S1 is turned on, compatible type
  • the high frequency voltages of the two ends of the LED lamp (third pin A, fourth pin B) and (first pin C, second pin D) will be connected to the rectifying filter circuit 14 through the relay S1.
  • a second capacitor C2 high frequency capacitor
  • a transformer T1 are connected between the legs B) to determine whether the input voltage is low frequency or high frequency.
  • the input voltage is low frequency
  • a very small current flows from the second capacitor C2 and the transformer T1.
  • the secondary winding of the transformer has no voltage output;
  • the input voltage is high frequency
  • a relatively large current flows from the second capacitor C2 and the transformer T1
  • the secondary coil of the transformer has a voltage output, and the input is used to judge the input.
  • the first control circuit 12 uses this voltage signal to control the on and off of the controllable switch S1 in the leakage protection circuit 13. This allows for leakage current and withstand voltage tests.
  • the circuit structure of the rectifying and filtering circuit 14 and the output filtering control circuit 16 can be designed into a plurality of circuit structures, FIG. 8 is a circuit structure in one case, and FIG. 9 is another case. In the following circuit structure, in FIG. 8 is a circuit structure in one case, and FIG. 9 is another case. In the following circuit structure, in FIG. 8 is a circuit structure in one case, and FIG. 9 is another case. In the following circuit structure, in FIG.
  • the rectifying and filtering circuit 14 includes a sixth diode D6, a seventh diode D7, an eighth diode D8, a ninth diode D9, a tenth diode D10, and a Eleven diode D11, twelfth diode D12, thirteenth diode D13, seventh capacitor C7 and eighth capacitor C8, wherein one end (cathode) of the sixth diode D6, the eighth two One end (cathode) of the pole tube D8 and one end of the seventh capacitor C7 are connected, and the other end (anode) of the sixth diode D6 is connected to one end (cathode) of the fourth contact 4 and the seventh diode D7, respectively.
  • the other end (anode) of the eighth diode D8 is connected to one end (cathode) of the fifth contact 5 and the ninth diode D9, respectively, and the other end (anode) of the seventh diode D7, the ninth diode
  • the other end of the tube D9 (anode) and the other end of the seventh capacitor C7 are grounded, and one end (cathode) of the tenth diode D10, the twelfth diode
  • One end of D12 (cathode) is connected to one end of the eighth capacitor C8, and the other end (anode) of the tenth diode D10 is connected to one end of the third capacitor C3 and one end (cathode) of the eleventh diode D11, respectively.
  • the other end (anode) of the twelfth diode D12 is connected to the other end of the third capacitor C3 and one end (cathode) of the thirteenth diode D13, respectively, and the other end (anode) of the eleventh diode D11
  • the other end of the thirteenth diode D13 (anode) and the other end of the eighth capacitor C8 are grounded, and one end of the eighth capacitor C8 is also connected to one input end of the constant current switching power supply circuit 15, and the eighth capacitor C8 The other end is also connected to the other input terminal of the constant current switching power supply circuit 15.
  • the output filter control circuit 16 includes a ninth capacitor C9, a fourth resistor R4, and a fourteenth diode D14.
  • One end of the ninth capacitor C9 and one end (anode) of the fourteenth diode D14 are respectively constant.
  • One output end of the flow switching power supply circuit 15 is connected, and the other end (cathode) of the fourteenth diode D14 is respectively connected to one end of the fourth resistor R4 and one end of the seventh capacitor C7, and the other end of the ninth capacitor C9 is respectively The other end of the fourth resistor R4 is connected to the other output end of the constant current switching power supply circuit 15.
  • the fourteenth diode D14 functions as a voltage isolation, that is, the voltage output from the rectifying and filtering circuit 14 is isolated from the constant current switching power supply circuit 15, that is, the voltage output from the rectifying and filtering circuit 14 is applied to the constant current switching power supply circuit. 15 does not affect.
  • the rectifying and filtering circuit 14 includes a fourteenth diode D14, a fifteenth diode D15, a sixteenth diode D16, a seventeenth diode D17, an eighteenth diode D18, and a a nineteenth diode D19 and a tenth capacitor C10, wherein one end of the fourteenth diode D14 (cathode), one end of the sixteenth diode D16 (cathode), and one end of the eighteenth diode D18 ( One end of the cathode) and the tenth capacitor C10 are connected to one input terminal of the constant current switching power supply circuit 14, and the other end (anode) of the fourteenth diode D14 is respectively connected to the fourth contact 4 and the fifteenth diode One end (cathode) of D15 is connected, and the other end (anode) of the sixteenth diode D16 is respectively connected to one end of the third capacitor C3 and one end (cathode) of
  • the output filter control circuit 16 includes a ninth capacitor C9 and a fourth resistor R4.
  • One end of the ninth capacitor C9 and the fourth resistor R4 are connected in parallel with an output end of the constant current switching power supply circuit 15 and one end of the LED string. Connected, the other end of the ninth capacitor C9 and the fourth resistor R4 connected in parallel is connected to the other output end of the constant current switching power supply circuit 15 and the other end of the LED string.
  • FIG. 10 is a circuit connection diagram of a compatible LED lamp with a leakage protection function in the first case in the first embodiment
  • FIG. 11 is a compatible LED lamp having a leakage protection function in the second embodiment
  • FIG. 12 is a circuit connection diagram of a compatible LED lamp with a leakage protection function in a third case in the third embodiment
  • FIG. 13 is a compatible LED lamp with a leakage protection function in the embodiment.
  • the compatible LED lamp with leakage protection function can not directly change the original lamp system, is compatible with the electronic ballast, and can directly input the AC mains.
  • the compatible LED tube with leakage protection function is used in LED fluorescent lamps to achieve compatibility with conventional fluorescent lamp ballast systems, especially electronic ballasts. Solve the old problem of replacing the traditional fluorescent lamp with the above target market LED fluorescent lamp.
  • the compatible LED tube with leakage protection function can be easily replaced with an LED fluorescent tube as with a conventional fluorescent lamp, and does not require a professional electrician to operate.
  • the replacement installation of the lamp tube is realized in units of seconds (the professional electrician of the non-compatible LED fluorescent tube is only modified 6-8 per hour), which greatly reduces the construction period of the renovation.
  • Old lamps do not need to change the safety regulations (UL ⁇ TUV ⁇ VDE ⁇ SAA and other certifications), their safety can be guaranteed, the engineering transformation does not destroy the old safety regulations, and the insurance project is still guaranteed.
  • the invention solves the problem that the LED lighting needs to change the original LED lamp line and destroy the original safety certification when replacing the traditional fluorescent lamp, and the compatible LED lamp with the leakage protection function can directly input the AC main power and is compatible with the electronic town. Streamer.

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Abstract

一种具有漏电保护功能的兼容型LED灯管，包括外壳、LED灯串和驱动电路，驱动电路包括输入判断匹配电路（11）、第一控制电路（12）、漏电保护电路（13）、整流滤波电路（14）、恒流开关电源电路（15）和输出滤波控制电路（16），输入判断匹配电路（11）与外壳的两端连接，第一控制电路（12）与输入判断匹配电路（11）连接，漏电保护电路（13）还与外壳的两端连接，整流滤波电路（14）与漏电保护电路（13）连接，恒流开关电源电路（15）与整流滤波电路（14）连接，输出滤波控制电路（16）与恒流开关电源电路（15）连接、用于接收恒流开关电源电路（15）输出的信号并对其滤波后驱动LED灯串。实施该具有漏电保护功能的兼容型LED灯管，具有以下有益效果：符合原有灯具的安规认证、能通过漏电流及耐压测试、节省人工成本和时间成本。

Description

一种具有漏电保护功能的兼容型LED灯管 技术领域
本发明涉及照明领域，特别涉及一种具有漏电保护功能的兼容型LED灯管。
 背景技术
节能可持续发展已不再是一个选择性的问题，而是当今世界未来发展的必行之路。以LED为代表的新光源照明逐渐取代传统光源，正引发照明行业的一场巨大变革。这种新光源照明产品正在创新技术的驱动下不断实现更新换代，由白炽灯到节能灯、卤素灯到LED灯，照明产品实现了节能升级的同时，在舒适度上也得到更好的提升，照明效果也更加的多样化。作为绿色节能光源的代表，LED照明成为最具市场潜力的行业热点，LED照明具有节约能源、使用寿命长、发光效率高和显色性高的优点。
LED替换传统的照明有着巨大的前景的市场，现传统的荧光灯都需要有电子镇流器驱动（参见图1、图2和图3），而目前的LED都是交流市电直接驱动（参见图4和图5），无法兼容现有的荧光灯电子镇流器，在使用LED照明替换传统荧光灯时，破坏原来的荧光灯灯具系统，取掉荧光灯原有的镇流器，修改为直接由市电驱动。然而，线路修改将带来以下问题：1）修改线路带来巨额的人工成本和时间成本，修改灯具的线路需要专业的持证电工，以欧洲来讲，一个专业电工每小时人工费约为70欧元，以改造线路的方式替换传统LED灯管，一小时约可以改造7支灯管左右。约合一个灯管改造成本为100块人民币左右，然而目前出口的LED灯管售价大约60-80元人民币左右，改造成本高于灯管成本；2）修改线路会破坏原有灯具的安规认证，在欧美等国家，灯具都是需要过UL（美国保险商试验所，Underwriter Laboratories Inc.)、VDE（Prufstelle Testing and Certification Institute，德国电气工程师协会）和TÜV（Technischer überwachüngs-Verein）等安规认证，并由保险公司承保，一旦修改了线路视为破坏了原来的安规认证，保险公司不在承保。
 技术问题
综上原因，兼容型传统镇流器的LED灯管具有非常大的市场前景及社会效益。全球照明领导品牌Philips（飞利浦）统计的数据全球有120亿支替换市场容量，于2014年1月在加拿大发布其第一款兼容型LED照明产品，但根据UL、VDE和TÜV等安规认证的要求，LED灯管单端供电或者双端供电时需要漏电流测试及耐压测试，然而传统荧光灯管是由双端供电，基于市场的需求，安规认证机构修改安规标准为可以双端供电，但要求一端接入灯管时，另一端不带电，以保证安全。然后，目前部分可以兼容电子镇流器的同类产品无法通过漏电流及耐压测试。
 技术解决方案
本发明要解决的技术问题在于，针对现有技术的上述修改线路会破坏原有灯具的安规认证、无法通过漏电流及耐压测试、修改线路的人工成本和时间成本较高、的缺陷，提供一种符合原有灯具的安规认证、能通过漏电流及耐压测试、节省人工成本和时间成本的具有漏电保护功能的兼容型LED灯管。
本发明解决其技术问题所采用的技术方案是：构造一种具有漏电保护功能的兼容型LED灯管，包括外壳、LED灯串和驱动电路，所述驱动电路包括输入判断匹配电路、第一控制电路、漏电保护电路、整流滤波电路、恒流开关电源电路和输出滤波控制电路，所述输入判断匹配电路与所述外壳的两端连接、用于根据输入的低频信号或高频信号相应输出低电压或高电压，所述第一控制电路与所述输入判断匹配电路连接、用于接收所述输入判断匹配电路输出的低电压或高电压，并相应控制所述漏电保护电路切断或接通，所述漏电保护电路还与所述外壳的两端连接，所述整流滤波电路与所述漏电保护电路连接、用于接收所述漏电保护电路输出的信号并对其进行整流滤波，所述恒流开关电源电路与所述整流滤波电路连接、用于接收所述整流滤波电路输出的信号并对其进行恒流处理，所述输出滤波控制电路与所述恒流开关电源电路连接、用于接收所述恒流开关电源电路输出的信号并对其进行滤波后驱动所述LED灯串发光。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述输入判断匹配电路包括第一电容、第二电容、第三电容、第一电阻、第一变压器、第一熔断器和第二熔断器，所述外壳的一端设有第一引脚和第二引脚，所述外壳的另一端设有第三引脚和第四引脚，所述第一电容和第一电阻并联的一端与所述第一引脚连接，所述第一电容和第一电阻并联的另一端分别与所述第二引脚和漏电保护电路连接，所述第一电容和第一电阻并联的另一端还通过所述第二电容与变压器初级线圈的一端连接，所述变压器初级线圈的另一端分别与所述第一熔断器的一端和第三电容的一端连接，所述第一熔断器的另一端与所述第三引脚连接，所述第三电容的另一端通过所述第二熔断器与所述第四引脚连接，变压器次级线圈与所述第一控制电路连接。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述第一控制电路包括第一二极管、第二二极管、第三二极管、第四二极管、第五二极管、第四电容、第五电容、第六电容、第二电阻、第三电阻和MOS管，所述第一二极管的一端、第三二极管的一端、第四电容的一端、第二电阻的一端和MOS管的漏极连接，所述第一二极管的另一端与所述第二二极管的一端连接，所述第三二极管的另一端与所述第四二极管的一端连接，所述第二电阻的另一端分别与所述第五电容的一端、MOS管的栅极和第五二极管的一端连接，所述第二二极管的另一端、第四二极管的另一端、第四电容的另一端、第五电容的另一端和第五二极管的另一端连接，所述变压器次级线圈的一端与所述第四二极管的一端连接，所述变压器次级线圈的另一端与所述第二二极管的一端连接，所述第六电容的一端分别与所述MOS管的源极和第三电阻的一端连接，所述第六电容的另一端分别与所述第五二极管的另一端和漏电保护电路连接，所述第三电阻的另一端与所述漏电保护电路连接。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述漏电保护电路包括可控开关。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述可控开关为继电器或半导体开关。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述继电器包括第一触点、第二触点、第三触点、第四触点、第五触点、第六触点、第七触点和第八触点，所述第一触点与所述第三电阻的另一端连接，所述第三触点与所述第二引脚连接，所述第八触点与所述第六电容的另一端连接。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述整流滤波电路包括第六二极管、第七二极管、第八二极管、第九二极管、第十二极管、第十一二极管、第十二二极管、第十三二极管、第七电容和第八电容，所述第六二极管的一端、第八二极管的一端、第七电容的一端连接，所述第六二极管的另一端分别与所述第四触点和第七二极管的一端连接，所述第八二极管的另一端分别与所述第五触点和第九二极管的一端连接，所述第七二极管的另一端、第九二极管的另一端和第七电容的另一端均接地，所述第十二极管的一端、第十二二极管的一端和第八电容的一端连接，所述第十二极管的另一端分别与所述第三电容的一端和第十一二极管的一端连接，所述第十二二极管的另一端分别与所述第三电容的另一端和第十三二极管的一端连接，所述第十一二极管的另一端、第十三二极管的另一端和第八电容的另一端均接地，所述第八电容的一端还与所述恒流开关电源电路的一个输入端连接，所述第八电容的另一端还与所述恒流开关电源电路的另一个输入端连接。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述输出滤波控制电路包括第九电容、第四电阻和第十四二极管，所述第九电容的一端分别与所述第十四二极管的一端和恒流开关电源电路的一个输出端连接，所述第十四二极管的另一端分别与所述第四电阻的一端和第七电容的一端连接，所述第九电容的另一端分别与所述第四电阻的另一端和恒流开关电源电路的另一输出端连接，所述第四电阻的一端还与所述LED灯串的一端连接，所述第四电阻的另一端还与所述LED灯串的另一端连接。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述整流滤波电路包括第十四二极管、第十五二极管、第十六二极管、第十七二极管、第十八二极管、第十九二极管和第十电容，所述第十四二极管的一端、第十六二极管的一端、第十八二极管的一端和第十电容的一端均与所述恒流开关电源电路的一个输入端连接，所述第十四二极管的另一端分别与所述第四触点和第十五二极管的一端连接，所述第十六二极管的另一端分别与所述第三电容的一端和第十七二极管的一端连接，所述第十八二极管的另一端分别与所述第三电容的另一端和第十九二极管的一端连接，所述第十五二极管的另一端、第十七二极管的另一端、第十九二极管的另一端、第十电容的另一端和恒流开关电源电路的另一输出端均接地。
在本发明所述的具有漏电保护功能的兼容型LED灯管中，所述输出滤波控制电路包括第九电容和第四电阻，所述第九电容和第四电阻并联的一端分别与所述恒流开关电源电路的一输出端和LED灯串的一端连接，所述第九电容和第四电阻并联的另一端分别与所述恒流开关电源电路的另一输出端和LED灯串的另一端连接。
 有益效果
实施本发明的具有漏电保护功能的兼容型LED灯管，具有以下有益效果：由于使用驱动电路，该驱动电路包括输入判断匹配电路、第一控制电路、漏电保护电路、整流滤波电路、恒流开关电源电路和输出滤波控制电路，输入判断匹配电路用于根据输入的低频信号或高频信号相应输出低电压或高电压，第一控制电路用于根据低电压或高电压并相应控制漏电保护电路切断或接通，当漏电保护电路切断时，可使LED灯管两点的测试漏电流小于安全值，整流滤波电路与用于接收漏电保护电路输出的信号并对其进行整流滤波，恒流开关电源电路与用于接收整流滤波电路输出的信号并对其进行恒流处理，输出滤波控制电路用于接收恒流开关电源电路输出的信号并对其进行滤波后驱动LED灯串发光，这样就不用进行修改线路，所以其符合原有灯具的安规认证、能通过漏电流及耐压测试、节省人工成本和时间成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为传统技术中带有电子镇流器的普通荧光灯照明系统的一种线路连接示意图；
图2为传统技术中带有电子镇流器的普通荧光灯照明系统的另一种线路连接示意图；
图3为传统技术中带有电子镇流器的普通荧光灯照明系统的又一种线路连接示意图；
图4为传统技术中LED照明系统的一种线路连接示意图；
图5为传统技术中LED照明系统的另一种线路连接示意图；
图6为本发明具有漏电保护功能的兼容型LED灯管一个实施例中的结构框图；
图7为所述实施例中具有漏电保护功能的兼容型LED灯管的漏电流测试示意图；
图8为所述实施例中具有漏电保护功能的兼容型LED灯管在一种情况下的电路结构示意图；
图9为所述实施例中具有漏电保护功能的兼容型LED灯管在另一种情况下的电路结构示意图；
图10为所述实施例中具有漏电保护功能的兼容型LED灯管在第一种情况下的线路连接图；
图11为所述实施例中具有漏电保护功能的兼容型LED灯管在第二种情况下的线路连接图；
图12为所述实施例中具有漏电保护功能的兼容型LED灯管在第三种情况下的线路连接图；
图13为所述实施例中具有漏电保护功能的兼容型LED灯管在第四种情况下的线路连接图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明具有漏电保护功能的兼容型LED灯管实施例中，其具有漏电保护功能的兼容型LED灯管的结构框图如图1所示。图1中，输入判断匹配电路11、第一控制电路12、漏电保护电路13、整流滤波电路14、恒流开关电源电路15和输出滤波控制电路16构成驱动电路，该具有漏电保护功能的兼容型LED灯管包括外壳（图中未示出）、LED灯串和驱动电路，其中，输入判断匹配电路11与外壳（图中未示出）的两端连接，用于根据输入的低频信号或高频信号相应输出低电压或高电压，第一控制电路12与输入判断匹配电路11连接、用于接收输入判断匹配电路11输出的低电压或高电压，并相应控制漏电保护电路13切断或接通，也就是说当输入为低频（50Hz/60Hz）时，输入判断匹配电路11输出低电压给第一控制电路12，第一控制电路12将控制漏电保护电路13切断（关闭），使兼容型LED灯管两端的测试漏电流小于安全值，当交流电或电子镇流器输出的高频信号进入输入判断匹配电路11时，也就是当输入为高频时，输入判断匹配电路11输出高电压给第一控制电路12，第一控制电路12将控制漏电保护电路13接通（打开）。值得一提的是，本实施例中，输入判断匹配电路11输出的低电压或高电压都是交流电压，本实施例中，当输入判断匹配电路11输出的电压在3V以下时，则认为是低电压，如果输入判断匹配电路11输出的电压在3V以上时，则认为输出的是高电压。
具体的，本实施例中，A和B是外壳的一端（也就是说成是兼容型LED灯管的一端），C和D是外壳的另一端（也可以说成是兼容型LED灯管的另一端），当AC交流市电输入时，火线L和零线N从兼容型LED灯管的同一侧A和B输入连接至整流滤波电路14，再依次接连至恒流开关电源电路15和输出滤波控制电路16。当本兼容型LED灯管连接至电子镇流器时，由于传统荧光灯具的电压是灯管两端的电压，电子镇流器输出的高频电压连接到兼容型LED灯管的两端，输入判断匹配电路11分别连接于兼容型LED灯管的两端（一端连接于A和B，另一端连接于C和D），当输入为高频时，输入判断电路匹配输出高电压给第一控制电路12，第一控制电路12将控制漏电保护电路13打开。这样能通过漏电流及耐压测试。
本实施例中，漏电保护电路还与外壳（图中未示出）的两端连接，整流滤波电路14与漏电保护电路13连接、用于接收漏电保护电路13输出的信号（漏电保护电路13在接通时才能输出信号），并对接收的信号进行整流滤波，恒流开关电源电路15与整流滤波电路14连接、用于接收整流滤波电路14输出的信号，并对接收的信号进行恒流处理，使其保持恒流状态，输出滤波控制电路16与恒流开关电源电路15连接、用于接收恒流开关电源电路15输出的信号，并对接收的信号进行滤波后驱动LED灯串发光。本发明将交流电或者电子镇流器输出的高频电能转换为能稳定驱动LED灯串发光的兼容型LED灯管。该具有漏电保护功能的兼容型LED灯管可适合于直接由交流电驱动的新装LED市场，同样又适用于传统荧光灯更新改造的应用，本发明可以不用修改线路，直接将原来的荧光灯管取下再换上兼容型LED灯管，其不需要专业的电工，且更换仅需要几秒钟内可完成，所以节省大量的人工和时间成本。
图7为本实施例中具有漏电保护功能的兼容型LED灯管的漏电流测试示意图，测试漏电流时，兼容型LED灯管的一端连接交流市电火线（50Hz/60Hz），兼容型LED灯管的另一端通过一个等效电阻接到地线（Grand），安规要求漏电小于一定的安全值，输入判断匹配电路11分别连接于兼容型LED灯管的两端（一端连接于A和B，另一端连接于C和D），当输入为低频（50Hz/60Hz）时，输入判断匹配电路11输出低电压给第一控制电路12，第一控制电路12将控制漏电保护电路13关闭，使兼容型LED灯管两端的测试漏电流小于安全值。
本实施例中，输入判断匹配电路11包括第一电容C1、第二电容C2、第三电容C3、第一电阻R1、第一变压器T1、第一熔断器F1和第二熔断器F2，其中，外壳的一端设有第一引脚C和第二引脚D，外壳的另一端设有第三引脚A和第四引脚B，第一电容C1和第一电阻R1并联，第一电容C1和第一电阻R1并联的一端与第一引脚C连接，第一电容C1和第一电阻R1并联的另一端分别与第二引脚D和漏电保护电路13连接，第一电容C1和第一电阻R1并联的另一端还通过第二电容C2与变压器初级线圈的一端连接，变压器初级线圈的另一端分别与第一熔断器F1的一端和第三电容C3的一端连接，第一熔断器F1的另一端与第三引脚A连接，第三电容C3的另一端通过第二熔断器F2与第四引脚B连接，变压器次级线圈与第一控制电路12连接。
当兼容型LED灯管连接在电子镇流器时，第一引脚C和第二引脚D之间所连接的第一电容C1和第一电阻R1模拟荧光灯管灯丝。第二电容C2与变压器T1串联连接于兼容型LED灯管的两端（第三引脚A、第四引脚B）和（第一引脚C、第二引脚D）之间组成镇流器匹配电器，当连接在电子镇流器上时，兼容型LED灯管两端的高频电压通过第二电容C2与变压器T1形成回路，同时高频电压通过变压器T1耦合到变压器次级线圈。当进行漏电流或误将交流市电从兼容型LED灯管两端输入时，由于交流市电为低频电压（50Hz/60Hz）经由第二电容C2与变压器T1串联回路流过的电流极小，电压无法从变压器T1耦合到次级线圈，将输出低电压给第一控制电路12。
本实施例中，第一控制电路12包括第一二极管D1、第二二极管D2、第三二极管D3、第四二极管D4、第五二极管D5、第四电容C4、第五电容C5、第六电容C6、第二电阻R2、第三电阻R3和MOS管Q1，其中，第一二极管D1的一端（阴极）、第三二极管D3的一端（阴极）、第四电容C4的一端、第二电阻R2的一端和MOS管Q1的漏极连接，第一二极管D1的另一端（阳极）与第二二极管D2的一端（阴极）连接，第三二极管D3的另一端（阳极）与第四二极管D4的一端（阴极）连接，第二电阻R2的另一端分别与第五电容C5的一端、MOS管Q1的栅极和第五二极管D5的一端（阴极）连接，第二二极管D2的另一端（阳极）、第四二极管D4的另一端（阳极）、第四电容C4的另一端、第五电容C5的另一端和第五二极管D5的另一端（阳极）连接，变压器次级线圈的一端与第四二极管D4的一端（阴极）连接，变压器次级线圈的另一端与第二二极管D2的一端连接，第六电容C6的一端分别与MOS管Q1的源极和第三电阻R3的一端连接，第六电容C6的另一端分别与第五二极管D5的另一端（阳极）和漏电保护电路13连接，第三电阻R3的另一端与漏电保护电路13连接。当兼容型LED灯管连接于电子镇流器时，输入判断匹配电路11输出的高电压通过第二电阻R2连接到MOS管Q1的栅极和第五二极管D5的阴极，由第一控制电路12控制漏电保护电路13。值得一提的是，本实施例中，MOS管Q1为N沟道MOS管。
本实施例中，漏电保护电路13包括可控开关S1，值得一提的是，可控开关S1可以为继电器或半导体开关，半导体开关可以是可控硅或MOS管等等。本实施例中采用的是继电器S1。本实施例中，继电器S1包括第一触点1、第二触点2、第三触点3、第四触点4、第五触点5、第六触点6、第七触点7和第八触点8，第一触点1与第三电阻R3的另一端连接，第三触点3与第二引脚D连接，第八触点8与第六电容C6的另一端连接。当兼容型LED灯管连接于电子镇流器时，第一控制电路12输入驱动信号到继电器S1的控制端（第一触点1和第八触点8），控制继电器S1导通，兼容型LED灯管两端（第三引脚A、第四引脚B）和（第一引脚C、第二引脚D）的高频电压将通过继电器S1连接至整流滤波电路14。
值得一提的是，对于输入判断匹配电路11来说，通过在兼容型LED灯管的一端（第一引脚C和第二引脚D）和另一端（第三引脚A和第四引脚B）之间连接第二电容C2（高频电容）和变压器T1来判断输入电压为低频还是高频，当输入电压为低频的时候，有极小的电流从第二电容C2和变压器T1流过，变压器次级线圈无电压输出；当输入电压为高频的时候，有比较大的电流从第二电容C2和变压器T1流过，变压器次级线圈有电压输出，使用这种方式来判断输入是高频电压还是低频电压，第一控制电路12用此电压信号去控制漏电保护电路13中的可控开关S1的接通与关闭。这样就能实现通过漏电流及耐压测试。
值得一提的是，本实施例中，整流滤波电路14和输出滤波控制电路16的电路结构可以设计成多种电路结构，图8是一种情况下的电路结构，图9是另一种情况下的电路结构，图8中，整流滤波电路14包括第六二极管D6、第七二极管D7、第八二极管D8、第九二极管D9、第十二极管D10、第十一二极管D11、第十二二极管D12、第十三二极管D13、第七电容C7和第八电容C8，其中，第六二极管D6的一端（阴极）、第八二极管D8的一端（阴极）、第七电容C7的一端连接，第六二极管D6的另一端（阳极）分别与第四触点4和第七二极管D7的一端（阴极）连接，第八二极管D8的另一端（阳极）分别与第五触点5和第九二极管D9的一端（阴极）连接，第七二极管D7的另一端（阳极）、第九二极管D9的另一端（阳极）和第七电容C7的另一端均接地，第十二极管D10的一端（阴极）、第十二二极管D12的一端（阴极）和第八电容C8的一端连接，第十二极管D10的另一端（阳极）分别与第三电容C3的一端和第十一二极管D11的一端（阴极）连接，第十二二极管D12的另一端（阳极）分别与第三电容C3的另一端和第十三二极管D13的一端（阴极）连接，第十一二极管D11的另一端（阳极）、第十三二极管D13的另一端（阳极）和第八电容C8的另一端均接地，第八电容C8的一端还与恒流开关电源电路15的一个输入端连接，第八电容C8的另一端还与恒流开关电源电路15的另一个输入端连接。
图8中，输出滤波控制电路16包括第九电容C9、第四电阻R4和第十四二极管D14，第九电容C9的一端分别与第十四二极管D14的一端（阳极）和恒流开关电源电路15的一个输出端连接，第十四二极管D14的另一端（阴极）分别与第四电阻R4的一端和第七电容C7的一端连接，第九电容C9的另一端分别与第四电阻R4的另一端和恒流开关电源电路15的另一输出端连接，第四电阻R4的一端还与LED灯串的一端连接，第四电阻R4的另一端还与LED灯串的另一端连接。第十四二极管D14起到电压隔离的作用，也就是将整流滤波电路14输出的电压与恒流开关电源电路15进行隔离，也就是使整流滤波电路14输出的电压对恒流开关电源电路15不产生影响。
图9中，整流滤波电路14包括第十四二极管D14、第十五二极管D15、第十六二极管D16、第十七二极管D17、第十八二极管D18、第十九二极管D19和第十电容C10，其中，第十四二极管D14的一端(阴极)、第十六二极管D16的一端（阴极）、第十八二极管D18的一端（阴极）和第十电容C10的一端均与恒流开关电源电路14的一个输入端连接，第十四二极管D14的另一端（阳极）分别与第四触点4和第十五二极管D15的一端（阴极）连接，第十六二极管D16的另一端（阳极）分别与第三电容C3的一端和第十七二极管D17的一端（阴极）连接，第十八二极管C18的另一端（阳极）分别与第三电容C3的另一端和第十九二极管D19的一端（阴极）连接，第十五二极管D15的另一端（阳极）、第十七二极管D17的另一端（阳极）、第十九二极管D19的另一端（阳极）、第十电容C10的另一端和恒流开关电源电路15的另一输出端均接地。
图9中，输出滤波控制电路16包括第九电容C9和第四电阻R4，第九电容C9和第四电阻R4并联的一端分别与恒流开关电源电路15的一输出端和LED灯串的一端连接，第九电容C9和第四电阻R4并联的另一端分别与恒流开关电源电路15的另一输出端和LED灯串的另一端连接。
图10为本实施例中具有漏电保护功能的兼容型LED灯管在第一种情况下的线路连接图；图11为本实施例中具有漏电保护功能的兼容型LED灯管在第二种情况下的线路连接图；图12为本实施例中具有漏电保护功能的兼容型LED灯管在第三种情况下的线路连接图；图13为本实施例中具有漏电保护功能的兼容型LED灯管在第四种情况下的线路连接图。该具有漏电保护功能的兼容型LED灯管既可不更改原有灯具系统，兼容电子镇流器，同时可以直接输入交流市电。
总之，在本实施例中，根据Philips统计目前有120亿支传统灯管待替换，根据lysno（荷兰公司）的统计目前仅欧洲待替换的日光灯就有80亿支。欧洲、美国、日本、澳洲等地旧改难主要是因为安规、人工费用、工期、保险承保四个问题造成。该具有漏电保护功能的兼容型LED灯管应用在LED日光灯中可实现兼容传统日光灯镇流器系统尤其电子镇流器。解决以上目标市场LED日光灯替换传统荧光灯的旧改难题。该具有漏电保护功能的兼容型LED灯管可以如同更换传统荧光灯一样简便的换成LED日光灯管，不需要专业电工操作。在降低人工费用的同时，几乎以秒级单位来实现灯管的替换安装（非兼容型LED日光灯管专业电工每小时仅改装好6-8支），大大降低改造工程工期。旧有灯具不需要改变安规（UL\TUV\VDE\SAA等认证)线路，其安规可以得到保证，工程改造没有破坏旧有安规，保险工程依然得到保障。本发明解决了LED照明在替换传统荧光灯必须更改原有LED灯具线路，破坏原有安规认证的问题，该具有漏电保护功能的兼容型LED灯管可以可直接输入交流市电，同时兼容电子镇流器。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种具有漏电保护功能的兼容型LED灯管，其特征在于，包括外壳、LED灯串和驱动电路，所述驱动电路包括输入判断匹配电路、第一控制电路、漏电保护电路、整流滤波电路、恒流开关电源电路和输出滤波控制电路，所述输入判断匹配电路与所述外壳的两端连接、用于根据输入的低频信号或高频信号相应输出低电压或高电压，所述第一控制电路与所述输入判断匹配电路连接、用于接收所述输入判断匹配电路输出的低电压或高电压，并相应控制所述漏电保护电路切断或接通，所述漏电保护电路还与所述外壳的两端连接，所述整流滤波电路与所述漏电保护电路连接、用于接收所述漏电保护电路输出的信号并对其进行整流滤波，所述恒流开关电源电路与所述整流滤波电路连接、用于接收所述整流滤波电路输出的信号并对其进行恒流处理，所述输出滤波控制电路与所述恒流开关电源电路连接、用于接收所述恒流开关电源电路输出的信号并对其进行滤波后驱动所述LED灯串发光。
  2. 根据权利要求1所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述输入判断匹配电路包括第一电容、第二电容、第三电容、第一电阻、第一变压器、第一熔断器和第二熔断器，所述外壳的一端设有第一引脚和第二引脚，所述外壳的另一端设有第三引脚和第四引脚，所述第一电容和第一电阻并联的一端与所述第一引脚连接，所述第一电容和第一电阻并联的另一端分别与所述第二引脚和漏电保护电路连接，所述第一电容和第一电阻并联的另一端还通过所述第二电容与变压器初级线圈的一端连接，所述变压器初级线圈的另一端分别与所述第一熔断器的一端和第三电容的一端连接，所述第一熔断器的另一端与所述第三引脚连接，所述第三电容的另一端通过所述第二熔断器与所述第四引脚连接，变压器次级线圈与所述第一控制电路连接。
  3. 根据权利要求2所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述第一控制电路包括第一二极管、第二二极管、第三二极管、第四二极管、第五二极管、第四电容、第五电容、第六电容、第二电阻、第三电阻和MOS管，所述第一二极管的一端、第三二极管的一端、第四电容的一端、第二电阻的一端和MOS管的漏极连接，所述第一二极管的另一端与所述第二二极管的一端连接，所述第三二极管的另一端与所述第四二极管的一端连接，所述第二电阻的另一端分别与所述第五电容的一端、MOS管的栅极和第五二极管的一端连接，所述第二二极管的另一端、第四二极管的另一端、第四电容的另一端、第五电容的另一端和第五二极管的另一端连接，所述变压器次级线圈的一端与所述第四二极管的一端连接，所述变压器次级线圈的另一端与所述第二二极管的一端连接，所述第六电容的一端分别与所述MOS管的源极和第三电阻的一端连接，所述第六电容的另一端分别与所述第五二极管的另一端和漏电保护电路连接，所述第三电阻的另一端与所述漏电保护电路连接。
  4. 根据权利要求3所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述漏电保护电路包括可控开关。
  5. 根据权利要求4所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述可控开关为继电器或半导体开关。
  6. 根据权利要求5所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述继电器包括第一触点、第二触点、第三触点、第四触点、第五触点、第六触点、第七触点和第八触点，所述第一触点与所述第三电阻的另一端连接，所述第三触点与所述第二引脚连接，所述第八触点与所述第六电容的另一端连接。
  7. 根据权利要求6所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述整流滤波电路包括第六二极管、第七二极管、第八二极管、第九二极管、第十二极管、第十一二极管、第十二二极管、第十三二极管、第七电容和第八电容，所述第六二极管的一端、第八二极管的一端、第七电容的一端连接，所述第六二极管的另一端分别与所述第四触点和第七二极管的一端连接，所述第八二极管的另一端分别与所述第五触点和第九二极管的一端连接，所述第七二极管的另一端、第九二极管的另一端和第七电容的另一端均接地，所述第十二极管的一端、第十二二极管的一端和第八电容的一端连接，所述第十二极管的另一端分别与所述第三电容的一端和第十一二极管的一端连接，所述第十二二极管的另一端分别与所述第三电容的另一端和第十三二极管的一端连接，所述第十一二极管的另一端、第十三二极管的另一端和第八电容的另一端均接地，所述第八电容的一端还与所述恒流开关电源电路的一个输入端连接，所述第八电容的另一端还与所述恒流开关电源电路的另一个输入端连接。
  8. 根据权利要求7所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述输出滤波控制电路包括第九电容、第四电阻和第十四二极管，所述第九电容的一端分别与所述第十四二极管的一端和恒流开关电源电路的一个输出端连接，所述第十四二极管的另一端分别与所述第四电阻的一端和第七电容的一端连接，所述第九电容的另一端分别与所述第四电阻的另一端和恒流开关电源电路的另一输出端连接，所述第四电阻的一端还与所述LED灯串的一端连接，所述第四电阻的另一端还与所述LED灯串的另一端连接。
  9. 根据权利要求6所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述整流滤波电路包括第十四二极管、第十五二极管、第十六二极管、第十七二极管、第十八二极管、第十九二极管和第十电容，所述第十四二极管的一端、第十六二极管的一端、第十八二极管的一端和第十电容的一端均与所述恒流开关电源电路的一个输入端连接，所述第十四二极管的另一端分别与所述第四触点和第十五二极管的一端连接，所述第十六二极管的另一端分别与所述第三电容的一端和第十七二极管的一端连接，所述第十八二极管的另一端分别与所述第三电容的另一端和第十九二极管的一端连接，所述第十五二极管的另一端、第十七二极管的另一端、第十九二极管的另一端、第十电容的另一端和恒流开关电源电路的另一输出端均接地。
  10. 根据权利要求9所述的具有漏电保护功能的兼容型LED灯管，其特征在于，所述输出滤波控制电路包括第九电容和第四电阻，所述第九电容和第四电阻并联的一端分别与所述恒流开关电源电路的一输出端和LED灯串的一端连接，所述第九电容和第四电阻并联的另一端分别与所述恒流开关电源电路的另一输出端和LED灯串的另一端连接。
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106937444A (zh) * 2017-03-23 2017-07-07 曾军 可控制漏电流且兼容镇流器的led驱动电路
CN108882458A (zh) * 2018-07-25 2018-11-23 东莞市灿光电子科技有限公司 一种防触电的led灯管以及方法
CN110519893A (zh) * 2019-10-08 2019-11-29 橙朴（上海）智能科技有限公司 旁路电路、电路系统以及单火取电开关
CN114124986A (zh) * 2021-09-02 2022-03-01 杭州腾泰智能设备有限公司 一种远近程互连互通万联互亿控的智能配电系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466031A (en) * 2008-11-26 2010-06-09 Alistair A Macfarlane LED lamp having rectifier and switching circuit
CN101883453A (zh) * 2009-05-05 2010-11-10 海洋王照明科技股份有限公司 一种led恒流驱动电路
CN202721866U (zh) * 2012-06-15 2013-02-06 深圳市宝瑞恒业科技有限公司 一种新型兼容led灯管的驱动电路
US20140125242A1 (en) * 2012-11-06 2014-05-08 Samsung Electronics Co., Ltd. Illumination system
CN103968285A (zh) * 2014-04-30 2014-08-06 深圳市宝瑞恒业科技有限公司 具有联动自恢复关断功能的兼容型led灯管及应用方法
CN204539546U (zh) * 2015-02-12 2015-08-05 深圳市宝瑞恒业科技有限公司 一种兼容镇流器的led灯驱动电路

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466031A (en) * 2008-11-26 2010-06-09 Alistair A Macfarlane LED lamp having rectifier and switching circuit
CN101883453A (zh) * 2009-05-05 2010-11-10 海洋王照明科技股份有限公司 一种led恒流驱动电路
CN202721866U (zh) * 2012-06-15 2013-02-06 深圳市宝瑞恒业科技有限公司 一种新型兼容led灯管的驱动电路
US20140125242A1 (en) * 2012-11-06 2014-05-08 Samsung Electronics Co., Ltd. Illumination system
CN103968285A (zh) * 2014-04-30 2014-08-06 深圳市宝瑞恒业科技有限公司 具有联动自恢复关断功能的兼容型led灯管及应用方法
CN204539546U (zh) * 2015-02-12 2015-08-05 深圳市宝瑞恒业科技有限公司 一种兼容镇流器的led灯驱动电路

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106937444A (zh) * 2017-03-23 2017-07-07 曾军 可控制漏电流且兼容镇流器的led驱动电路
CN106937444B (zh) * 2017-03-23 2018-09-28 东莞泛美光电有限公司 可控制漏电流且兼容镇流器的led驱动电路
CN108882458A (zh) * 2018-07-25 2018-11-23 东莞市灿光电子科技有限公司 一种防触电的led灯管以及方法
CN110519893A (zh) * 2019-10-08 2019-11-29 橙朴（上海）智能科技有限公司 旁路电路、电路系统以及单火取电开关
CN110519893B (zh) * 2019-10-08 2024-05-14 橙朴（上海）智能科技有限公司 旁路电路、电路系统以及单火取电开关
CN114124986A (zh) * 2021-09-02 2022-03-01 杭州腾泰智能设备有限公司 一种远近程互连互通万联互亿控的智能配电系统

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