阅读说明：本技术 一种led插拔管的驱动电路及驱动装置 (Driving circuit and driving device of LED plug tube ) 是由 刘奇 刘宗炎 鲍永均 伍旭 于 2019-10-23 设计创作，主要内容包括：一种LED插拔管的驱动电路及驱动装置,包括过流保护模块、模拟灯丝模块、整流滤波模块、电压转换模块以及判断控制模块,通过判断接入的外部驱动源为市电或者电子镇流器：并当外部驱动源为市电时,控制驱动信号依序经过过流保护模块、模拟灯丝模块、整流滤波模块以及电压转换模块后驱动LED灯进行工作；或者当外部驱动源为电子镇流器时,控制驱动信号依序经过过流保护模块、模拟灯丝模块以及整流滤波模块后驱动LED灯进行工作。由此实现了LED插拔管可同时兼容市电和电子镇流器的工作方式,并且当旧有的电子镇流器损坏而LED插拔管仍未损坏时,可直接更改灯架内部的线路,以旁路掉电子镇流器,再重新安装原有LED插拔管即可,无需重新购买替换,经济方便。(The utility model provides a drive circuit and drive arrangement of LED plug tube, includes overcurrent protection module, simulation filament module, rectification filter module, voltage conversion module and judgement control module, is commercial power or electronic ballast through the outside driving source of judging the access: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module, the rectification filter module and the voltage conversion module and then drive the LED lamp to work; or when the external driving source is an electronic ballast, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module and the rectification filter module to drive the LED lamp to work. Therefore, the LED plug tube can be compatible with the commercial power and the electronic ballast, when the existing electronic ballast is damaged and the LED plug tube is not damaged, the circuit inside the lamp holder can be directly changed, the electronic ballast is powered off by a bypass, the original LED plug tube is reinstalled, and the LED plug tube is not required to be repurchased and replaced, and is economical and convenient.)

1. A drive circuit of an LED pluggable tube is characterized by comprising:

the overcurrent protection module is connected with an external driving source and used for carrying out overcurrent protection on a driving signal output by the external driving source;

the filament simulation module is connected with the overcurrent protection module and used for simulating filament impedance in the fluorescent lamp so as to improve the compatibility of the LED lamp;

the rectifying and filtering module is connected with the analog filament module and is used for rectifying and filtering the driving signal after overcurrent protection;

the voltage conversion module is connected with the rectifying and filtering module and the LED lamp and is used for carrying out voltage conversion on the driving signal after the rectifying and filtering processing; and

and the analog filament module is connected with the voltage conversion module and used for judging whether the external driving source is a commercial power or an electronic ballast: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module, the rectification filter module and the voltage conversion module and then drive the LED lamp to work; or when the external driving source is an electronic ballast, the judgment control module controls the driving signal to sequentially pass through the overcurrent protection module, the analog filament module and the rectification filter module and then drive the LED lamp to work.

2. The driving circuit according to claim 1, wherein the over-current protection module is implemented by a fuse.

3. The driving circuit of claim 1, wherein the analog filament module comprises:

the first capacitor, the third capacitor, the seventh capacitor, the tenth capacitor, the second resistor, the third resistor, the fourth resistor, the ninth resistor, the tenth resistor, the eleventh resistor, the sixteenth resistor, the seventeenth resistor, the eighteenth resistor, the twenty-first resistor, the twenty-second resistor and the twenty-third resistor;

the first end of the first capacitor, the first end of the second resistor, the first end of the third resistor and the first end of the fourth resistor are connected in common, the second end of the first capacitor, the second end of the second resistor, the second end of the third resistor, the second end of the fourth resistor, the first end of the ninth resistor, the first end of the tenth resistor, the first end of the eleventh resistor and the first end of the third capacitor are connected in common and serve as a first output end of the analog filament module, and the second end of the ninth resistor, the second end of the tenth resistor, the second end of the eleventh resistor and the second end of the third capacitor are connected in common;

the first end of the seventh capacitor, the first end of the sixteenth resistor, the first end of the seventeenth resistor and the first end of the eighteenth resistor are connected in common, the second end of the seventh capacitor, the second end of the sixteenth resistor, the second end of the seventeenth resistor, the second end of the eighteenth resistor, the first end of the twenty-first resistor, the first end of the twenty-second resistor, the first end of the twenty-third resistor and the first end of the tenth capacitor are connected in common and serve as the second output end of the analog filament module, and the second end of the twenty-first resistor, the second end of the twenty-second resistor, the second end of the twenty-third resistor and the second end of the tenth capacitor are connected in common.

4. The driving circuit according to claim 1, wherein the rectifying and filtering module comprises:

the first diode, the second diode, the sixth diode, the seventh diode, the fourth capacitor, the sixth capacitor, the third inductor and the fifteenth resistor;

the anode of the first diode is connected to the cathode of the sixth diode, the cathode of the first diode, the cathode of the second diode, the first end of the fourth capacitor and the first end of the sixth capacitor are connected in common, the anode of the second diode is connected to the cathode of the seventh diode, the anode of the sixth diode, the anode of the seventh diode, the second end of the fourth capacitor, the first end of the third inductor and the first end of the fifteenth resistor are connected in common, and the second end of the sixth capacitor, the second end of the third inductor and the second end of the fifteenth resistor are connected to ground.

5. The driving circuit of claim 1, wherein the voltage conversion module comprises:

the circuit comprises a first resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a twelfth resistor, a fourteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor, a thirty-fifth resistor, a third diode, a fourth diode, an eighth diode, a second capacitor, a fifth capacitor, an eighth capacitor, a thirteenth capacitor, a seventeenth capacitor, a second inductor, a main control chip and a first switching tube;

the first end of the sixth resistor is connected with the LED lamp, the second end of the sixth resistor is connected with the first end of the twenty-sixth resistor and the first end of the thirteenth capacitor, the second end of the twenty-sixth resistor is connected with the second end of the thirteenth capacitor and the first end of the seventeenth capacitor is grounded, the second end of the seventeenth capacitor is connected with the cathode of the eighth diode, the first end of the nineteenth resistor is connected with the main control chip, the second end of the nineteenth resistor is connected with the controlled end of the first switch tube, the first end of the first resistor, the first end of the fifth resistor, the cathode of the third diode, the first end of the fifth capacitor, the first end of the second capacitor and the first end of the eighth resistor are connected with the LED lamp, and the second end of the first resistor is connected with the first end of the seventh resistor, The second end of the seventh resistor is connected to the anode of the fourth diode, the cathode of the fourth diode is connected to the main control chip, the second end of the fifth resistor is connected to the first end of the twelfth resistor, the second end of the twelfth resistor is connected to the first end of the twentieth resistor, the second end of the twentieth resistor, the input end of the first switch tube, the first end of the twenty-seventh resistor, the first end of the twenty-eighth resistor and the first end of the thirty resistor are connected in common, the second end of the twenty-seventh resistor, the second end of the twenty-eighth resistor and the second end of the thirty resistor are connected to the ground, the second end of the fifth capacitor, the anode of the third diode, the first end of the second inductor and the output end of the first switch tube are connected in common, the second end of the second capacitor, the second end of the second inductor, the first end of the second inductor, the cathode of the second capacitor, the first end of the first switch tube, a second end of the eighth resistor, a first end of the fourteenth resistor, and a first end of the eighth capacitor are all connected to each other, a second end of the fourteenth resistor is connected to an anode of the eighth diode, and a second end of the eighth capacitor is grounded.

6. The drive circuit according to claim 1, wherein the determination control module includes:

the second switch tube, the third switch tube, the ninth diode, the twelfth diode, the eleventh diode, the ninth capacitor, the eleventh capacitor, the twelfth capacitor, the twenty-fourth resistor, the twenty-fifth resistor and the twenty-ninth resistor;

the first end of the ninth capacitor is connected to the analog filament module, the second end of the ninth capacitor is connected to the anode of the ninth diode, the cathode of the eleventh diode, the first end of the twenty-fifth resistor, the first end of the twelfth capacitor and the controlled end of the second switch tube in common, the cathode of the ninth diode is connected to the first end of the twenty-fourth resistor, the second end of the twenty-fourth resistor, the first end of the twenty-ninth resistor, the first end of the eleventh capacitor, the cathode of the twelfth diode and the controlled end of the third switch tube in common, the input end of the third switch tube is connected to the second end of the twenty-ninth resistor and the second end of the eleventh capacitor in common, the anode of the eleventh diode, the second end of the twenty-fifth resistor, the second end of the twelfth capacitor and the input end of the second switch tube in common, the output end of the second switch tube is connected with the voltage conversion module, and the output end of the third switch tube is connected with the LED lamp.

7. The drive circuit according to claim 1, wherein the determination control module includes:

a fourth switching tube, a thirty-first resistor, a thirty-second resistor, a thirty-third resistor, a thirteenth diode, a fourteenth diode, a nineteenth capacitor, a twentieth capacitor and a twenty-first capacitor;

the first end of the twentieth capacitor is connected with the analog filament module, the second end of the twentieth capacitor is connected with the anode of the fourteenth diode, a cathode of the fourteenth diode, a first end of the thirty-second resistor, a cathode of the thirteenth diode, a first end of the thirty-third resistor, and a first end of the twenty-first capacitor are all connected together, the second end of the thirty-second resistor, the controlled end of the fourth switching tube, the first end of the thirty-first resistor and the first end of the nineteenth capacitor are connected in common, the input end of the fourth switching tube, the second end of the thirty-first resistor, the second end of the nineteenth capacitor, the anode of the thirteenth diode, the second end of the thirty-third resistor and the second end of the twenty-first capacitor are grounded, and the output end of the fourth switching tube is connected with the LED lamp.

8. The drive circuit according to claim 1, wherein the determination control module includes:

a twenty-second capacitor, a twenty-third capacitor, a twenty-fourth capacitor, a rectifier bridge, a fifth switching tube, a fifteenth diode, a thirty-fourth resistor, a thirty-fifth resistor and a thirty-sixth resistor;

the first end of the twenty-second capacitor is connected with the analog filament module, the second end of the twenty-second capacitor is connected with the rectifier bridge, the first end of the thirty-fifth resistor, the first end of the thirty-fourth resistor, the first end of the twenty-third capacitor and the controlled end of the fifth switching tube are connected in common, the second end of the thirty-fifth resistor, the cathode of the fifteenth diode, the first end of the thirty-sixth resistor and the first end of the twenty-fourth capacitor are connected in common, the input end of the fifth switching tube, the second end of the thirty-fourth resistor, the second end of the twenty-third capacitor, the anode of the fifteenth diode, the second end of the thirty-sixth resistor and the second end of the twenty-fourth capacitor are connected to ground, and the output end of the fifth switching tube is connected with the LED lamp.

9. The driving circuit according to claim 8, wherein the determination control module further comprises a twenty-fifth capacitor,

and the first end of the twenty-fifth capacitor is connected with the analog filament module, and the second end of the twenty-fifth capacitor is connected with the rectifier bridge.

10. The utility model provides a drive arrangement of LED plug tube which characterized in that includes:

a drive circuit according to any one of claims 1-9; and

an external driving source for providing a driving signal to the driving circuit.

Technical Field

The application belongs to the technical field of electronic circuits, and particularly relates to a driving circuit and a driving device of an LED plug tube.

Background

As is known well, the existing LED plug tube can only be connected with commercial power and cannot be connected with an electronic ballast; or the lamp can only be accessed to the commercial power and the inductive ballast compatibly, and can not be accessed to the commercial power, the electronic ballast and the inductive ballast compatibly at the same time, which is not beneficial to replacing the existing fluorescent lamp tube, and is not beneficial to customer stock and inventory management.

Therefore, the existing driving technology of the LED plug tube has the problem that the existing driving technology cannot be compatible with the working modes of commercial power and an electronic ballast at the same time, so that the maintenance cost is increased.

Disclosure of Invention

In view of this, the embodiment of the present application provides a driving circuit and a driving device for an LED pluggable tube, which aim to solve the problem that the existing driving technology for an LED pluggable tube cannot be compatible with the working modes of the commercial power and the electronic ballast at the same time, which results in increased maintenance cost.

A first aspect of the embodiments of the present application provides a driving circuit for an LED pluggable tube, which includes:

the overcurrent protection module is connected with an external driving source and used for carrying out overcurrent protection on a driving signal output by the external driving source;

the filament simulation module is connected with the overcurrent protection module and used for simulating filament impedance in the fluorescent lamp so as to improve the compatibility of the LED lamp;

the rectifying and filtering module is connected with the analog filament module and is used for rectifying and filtering the driving signal after overcurrent protection;

the voltage conversion module is connected with the rectifying and filtering module and the LED lamp and is used for carrying out voltage conversion on the driving signal after the rectifying and filtering processing; and

and the analog filament module is connected with the voltage conversion module and used for judging whether the external driving source is a commercial power or an electronic ballast: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module, the rectification filter module and the voltage conversion module and then drive the LED lamp to work; or when the external driving source is an electronic ballast, the judgment control module controls the driving signal to sequentially pass through the overcurrent protection module, the analog filament module and the rectification filter module and then drive the LED lamp to work.

Preferably, the overcurrent protection module is implemented by a fuse.

Preferably, the analog filament module comprises:

the first capacitor, the third capacitor, the seventh capacitor, the tenth capacitor, the second resistor, the third resistor, the fourth resistor, the ninth resistor, the tenth resistor, the eleventh resistor, the sixteenth resistor, the seventeenth resistor, the eighteenth resistor, the twenty-first resistor, the twenty-second resistor and the twenty-third resistor;

the first end of the first capacitor, the first end of the second resistor, the first end of the third resistor and the first end of the fourth resistor are connected in common, the second end of the first capacitor, the second end of the second resistor, the second end of the third resistor, the second end of the fourth resistor, the first end of the ninth resistor, the first end of the tenth resistor, the first end of the eleventh resistor and the first end of the third capacitor are connected in common and serve as a first output end of the analog filament module, and the second end of the ninth resistor, the second end of the tenth resistor, the second end of the eleventh resistor and the second end of the third capacitor are connected in common;

the first end of the seventh capacitor, the first end of the sixteenth resistor, the first end of the seventeenth resistor and the first end of the eighteenth resistor are connected in common, the second end of the seventh capacitor, the second end of the sixteenth resistor, the second end of the seventeenth resistor, the second end of the eighteenth resistor, the first end of the twenty-first resistor, the first end of the twenty-second resistor, the first end of the twenty-third resistor and the first end of the tenth capacitor are connected in common and serve as the second output end of the analog filament module, and the second end of the twenty-first resistor, the second end of the twenty-second resistor, the second end of the twenty-third resistor and the second end of the tenth capacitor are connected in common.

Preferably, the rectifying and filtering module includes:

the first diode, the second diode, the sixth diode, the seventh diode, the fourth capacitor, the sixth capacitor, the third inductor and the fifteenth resistor;

the anode of the first diode is connected to the cathode of the sixth diode, the cathode of the first diode, the cathode of the second diode, the first end of the fourth capacitor and the first end of the sixth capacitor are connected in common, the anode of the second diode is connected to the cathode of the seventh diode, the anode of the sixth diode, the anode of the seventh diode, the second end of the fourth capacitor, the first end of the third inductor and the first end of the fifteenth resistor are connected in common, and the second end of the sixth capacitor, the second end of the third inductor and the second end of the fifteenth resistor are connected to ground.

Preferably, the voltage conversion module includes:

the circuit comprises a first resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a twelfth resistor, a fourteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor, a thirty-fifth resistor, a third diode, a fourth diode, an eighth diode, a second capacitor, a fifth capacitor, an eighth capacitor, a thirteenth capacitor, a seventeenth capacitor, a second inductor, a main control chip and a first switching tube;

the first end of the sixth resistor is connected with the LED lamp, the second end of the sixth resistor is connected with the first end of the twenty-sixth resistor and the first end of the thirteenth capacitor, the second end of the twenty-sixth resistor is connected with the second end of the thirteenth capacitor and the first end of the seventeenth capacitor is grounded, the second end of the seventeenth capacitor is connected with the cathode of the eighth diode, the first end of the nineteenth resistor is connected with the main control chip, the second end of the nineteenth resistor is connected with the controlled end of the first switch tube, the first end of the first resistor, the first end of the fifth resistor, the cathode of the third diode, the first end of the fifth capacitor, the first end of the second capacitor and the first end of the eighth resistor are connected with the LED lamp, and the second end of the first resistor is connected with the first end of the seventh resistor, The second end of the seventh resistor is connected to the anode of the fourth diode, the cathode of the fourth diode is connected to the main control chip, the second end of the fifth resistor is connected to the first end of the twelfth resistor, the second end of the twelfth resistor is connected to the first end of the twentieth resistor, the second end of the twentieth resistor, the input end of the first switch tube, the first end of the twenty-seventh resistor, the first end of the twenty-eighth resistor and the first end of the thirty resistor are connected in common, the second end of the twenty-seventh resistor, the second end of the twenty-eighth resistor and the second end of the thirty resistor are connected to the ground, the second end of the fifth capacitor, the anode of the third diode, the first end of the second inductor and the output end of the first switch tube are connected in common, the second end of the second capacitor, the second end of the second inductor, the first end of the second inductor, the cathode of the second capacitor, the first end of the first switch tube, a second end of the eighth resistor, a first end of the fourteenth resistor, and a first end of the eighth capacitor are all connected to each other, a second end of the fourteenth resistor is connected to an anode of the eighth diode, and a second end of the eighth capacitor is grounded.

Preferably, the judgment control module includes:

the second switch tube, the third switch tube, the ninth diode, the twelfth diode, the eleventh diode, the ninth capacitor, the eleventh capacitor, the twelfth capacitor, the twenty-fourth resistor, the twenty-fifth resistor and the twenty-ninth resistor;

the first end of the ninth capacitor is connected to the analog filament module, the second end of the ninth capacitor is connected to the anode of the ninth diode, the cathode of the eleventh diode, the first end of the twenty-fifth resistor, the first end of the twelfth capacitor and the controlled end of the second switch tube in common, the cathode of the ninth diode is connected to the first end of the twenty-fourth resistor, the second end of the twenty-fourth resistor, the first end of the twenty-ninth resistor, the first end of the eleventh capacitor, the cathode of the twelfth diode and the controlled end of the third switch tube in common, the input end of the third switch tube is connected to the second end of the twenty-ninth resistor and the second end of the eleventh capacitor in common, the anode of the eleventh diode, the second end of the twenty-fifth resistor, the second end of the twelfth capacitor and the input end of the second switch tube in common, the output end of the second switch tube is connected with the voltage conversion module, and the output end of the third switch tube is connected with the LED lamp.

Preferably, the judgment control module includes:

a fourth switching tube, a thirty-first resistor, a thirty-second resistor, a thirty-third resistor, a thirteenth diode, a fourteenth diode, a nineteenth capacitor, a twentieth capacitor and a twenty-first capacitor;

the first end of the twentieth capacitor is connected with the analog filament module, the second end of the twentieth capacitor is connected with the anode of the fourteenth diode, a cathode of the fourteenth diode, a first end of the thirty-second resistor, a cathode of the thirteenth diode, a first end of the thirty-third resistor, and a first end of the twenty-first capacitor are all connected together, the second end of the thirty-second resistor, the controlled end of the fourth switching tube, the first end of the thirty-first resistor and the first end of the nineteenth capacitor are connected in common, the input end of the fourth switching tube, the second end of the thirty-first resistor, the second end of the nineteenth capacitor, the anode of the thirteenth diode, the second end of the thirty-third resistor and the second end of the twenty-first capacitor are grounded, and the output end of the fourth switching tube is connected with the LED lamp.

Preferably, the judgment control module includes:

a twenty-second capacitor, a twenty-third capacitor, a twenty-fourth capacitor, a rectifier bridge, a fifth switching tube, a fifteenth diode, a thirty-fourth resistor, a thirty-fifth resistor and a thirty-sixth resistor;

the first end of the twenty-second capacitor is connected with the analog filament module, the second end of the twenty-second capacitor is connected with the rectifier bridge, the first end of the thirty-fifth resistor, the first end of the thirty-fourth resistor, the first end of the twenty-third capacitor and the controlled end of the fifth switching tube are connected in common, the second end of the thirty-fifth resistor, the cathode of the fifteenth diode, the first end of the thirty-sixth resistor and the first end of the twenty-fourth capacitor are connected in common, the input end of the fifth switching tube, the second end of the thirty-fourth resistor, the second end of the twenty-third capacitor, the anode of the fifteenth diode, the second end of the thirty-sixth resistor and the second end of the twenty-fourth capacitor are connected to ground, and the output end of the fifth switching tube is connected with the LED lamp.

Preferably, the judgment control module further comprises a twenty-fifth capacitor,

and the first end of the twenty-fifth capacitor is connected with the analog filament module, and the second end of the twenty-fifth capacitor is connected with the rectifier bridge.

A second aspect of the embodiments of the present application provides a driving apparatus for an LED pluggable tube, which includes:

the drive circuit as described above; and

an external driving source for providing a driving signal to the driving circuit.

Above-mentioned drive circuit and drive arrangement of LED plug tube, including overcurrent protection module, simulation filament module, rectification filter module, voltage conversion module and judgement control module, the outside driving source through judging the access is commercial power or electronic ballast: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module, the rectification filter module and the voltage conversion module and then drive the LED lamp to work; or when the external driving source is an electronic ballast, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module and the rectification filter module to drive the LED lamp to work. Therefore, the LED plug tube can be compatible with the commercial power and the electronic ballast, when the old electronic ballast is damaged and the LED plug tube is not damaged, the circuit inside the lamp holder can be directly changed, the electronic ballast is powered off by a bypass, the original LED plug tube is installed again, the replacement is not required to be purchased again, the LED plug tube is economical and convenient, the problem that the maintenance cost is increased due to the fact that the existing LED plug tube driving technology cannot be compatible with the commercial power and the electronic ballast at the same time is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a driving circuit of an LED pluggable tube according to the present disclosure;

fig. 2 is a circuit diagram illustrating an example of a driving circuit of an LED pluggable tube provided in the present application;

fig. 3 is a circuit diagram illustrating an exemplary judgment control module in a driving circuit of an LED tube according to another embodiment of the present application;

fig. 4 is a circuit diagram illustrating an exemplary judgment control module in a driving circuit of an LED pluggable tube according to another embodiment of the present application;

fig. 5 is a circuit diagram illustrating an exemplary judgment control module in a driving circuit of an LED pluggable tube according to yet another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1, for convenience of description, only the parts related to the present embodiment are shown in the module structure of the driving circuit of the LED pluggable tube provided in the present embodiment, and the details are as follows:

the driving circuit of the LED pluggable tube comprises an overcurrent protection module 101, an analog filament module 102, a rectifying and filtering module 103, a voltage conversion module 104, and a determination control module 105.

The overcurrent protection module 101 is connected to an external driving source, and is used for performing overcurrent protection on a driving signal output by the external driving source.

Specifically, the overcurrent protection module 101 performs overcurrent protection on the driving signal, which is a protection method for operating a protection device when the current exceeds a predetermined maximum value. When the current flowing through the driving circuit exceeds a certain preset value, the protection device is started, and the selectivity of action is ensured by time limit, so that the breaker is tripped or the fusing device is fused, and the whole driving circuit is protected.

The filament simulation module 102 is connected to the overcurrent protection module 101, and is configured to simulate filament impedance inside the fluorescent lamp, so as to improve compatibility of the LED lamp.

Specifically, the analog filament module 102 is mainly used to provide an impedance to the output terminal of the electronic ballast to enable the electronic ballast to have a normal output, thereby improving the compatibility of the electronic ballast. The filament simulation module 102 may include any one or a combination of resistors, capacitors, and inductors in series or in parallel.

The rectifying and filtering module 103 is connected with the analog filament module 102 and is used for rectifying and filtering the driving signal after overcurrent protection.

Specifically, since the driving signal is an ac signal, the rectification and filtering module 103 rectifies the ac signal and outputs a dc signal with a preset voltage, and the preset voltage can be set according to specific conditions; next, the rectifying and filtering module 103 filters out signals with specific band frequency in the dc signal with the preset voltage value to suppress and prevent interference.

The voltage conversion module 104 is connected to the rectifying and filtering module 103 and the LED lamp 10, and is configured to perform voltage conversion on the driving signal after the rectifying and filtering processing.

Specifically, the voltage conversion module 104 is only operated when the utility power is connected, and is not operated when the electronic ballast is connected. The voltage conversion module 104 performs voltage conversion, including voltage boosting and voltage reducing, and is configured to perform voltage conversion on the rectified and filtered driving signal to output a constant optimization signal to power the LED lamp 10 for emitting light. The voltage value of the voltage-converted optimization signal corresponds to the rated voltage of the LED lamp 10, and when the LED lamp 10 receives the optimization signal, the LED lamp 10 is in a normal light-emitting working state.

The judgment control module 105 is connected to the analog filament module 102 and the voltage conversion module 104, and is configured to judge whether the accessed external driving source is commercial power or an electronic ballast: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module 101, the analog filament module 102, the rectification filter module 103 and the voltage conversion module 104, and then the LED lamp 10 is driven to work; or when the external driving source is an electronic ballast, the driving signal is controlled to sequentially pass through the overcurrent protection module 101, the analog filament module 102 and the rectification filter module 103 to drive the LED lamp 10 to operate.

Specifically, the judgment control module 105 plays two roles, including: and (4) judging and controlling. Firstly, judging whether an accessed external driving source is commercial power or an electronic ballast; when the commercial power is connected, the voltage conversion module 104 is controlled to work, and the driving signal is controlled to drive the LED lamp 10 to work after sequentially passing through the overcurrent protection module 101, the analog filament module 102, the rectification filter module 103 and the voltage conversion module 104; when the electronic ballast is switched on, the voltage conversion module 104 is controlled not to work, and the driving signal is controlled to drive the LED lamp 10 to work after sequentially passing through the overcurrent protection module 101, the analog filament module 102 and the rectifying and filtering module 103. The electronic ballast is one of ballasts, and refers to an electronic device that drives an electric light source by using an electronic technology to generate required illumination.

Just because set up judgement control module 105 for the LED plug tube can be compatible commercial power and electronic ballast's working method simultaneously, and when old electronic ballast damaged and LED plug tube still not damaged, can directly change the inside circuit of lighting fixture, with the bypass fall electronic ballast, install again original LED plug tube can, need not to purchase the replacement again, economic convenience.

Fig. 2 shows an example circuit of a driving circuit of an LED pluggable tube according to an embodiment of the present application, and for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

as an alternative embodiment, the overcurrent protection module 101 is implemented by using a fuse.

As an alternative embodiment, the analog filament module 102 includes a first capacitor C1, a third capacitor C3, a seventh capacitor C7, a tenth capacitor C10, a second resistor R2, a third resistor R3, a fourth resistor R4, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a twenty-first resistor R21, a twenty-second resistor R22, and a twenty-third resistor R23;

a first end of a first capacitor C1, a first end of a second resistor R2, a first end of a third resistor R3 and a first end of a fourth resistor R4 are connected in common, a second end of the first capacitor C1, a second end of a second resistor R2, a second end of a third resistor R3, a second end of the fourth resistor R4, a first end of a ninth resistor R9, a first end of a tenth resistor R10, a first end of an eleventh resistor R11 and a first end of a third capacitor C3 are connected in common and serve as a first output end of the analog filament module 102, and a second end of the ninth resistor R9, a second end of the tenth resistor R10, a second end of the eleventh resistor R11 and a second end of the third capacitor C3 are connected in common;

a first end of the seventh capacitor C7, a first end of the sixteenth resistor R16, a first end of the seventeenth resistor R17 and a first end of the eighteenth resistor R18 are commonly connected, a second end of the seventh capacitor C7, a second end of the sixteenth resistor R16, a second end of the seventeenth resistor R17, a second end of the eighteenth resistor R18, a first end of the twenty-first resistor R21, a first end of the twenty-second resistor R22, a first end of the twenty-third resistor R23 and a first end of the tenth capacitor C10 are commonly connected and serve as a second output end of the analog filament module 102, and a second end of the twenty-first resistor R21, a second end of the twenty-second resistor R22, a second end of the twenty-third resistor R23 and a second end of the tenth capacitor C10 are commonly connected.

As an optional implementation manner, the rectifier filter module 103 includes a first diode D1, a second diode D2, a sixth diode D6, a seventh diode D7, a fourth capacitor C4, a sixth capacitor C6, a third inductor L3, and a fifteenth resistor R15;

an anode of the first diode D1 is connected to a cathode of the sixth diode D6, a cathode of the first diode D1, a cathode of the second diode D2, a first end of the fourth capacitor C4 and a first end of the sixth capacitor C6 are connected in common, an anode of the second diode D2 is connected to a cathode of the seventh diode D7, an anode of the sixth diode D6, an anode of the seventh diode D7, a second end of the fourth capacitor C4, a first end of the third inductor L3 and a first end of the fifteenth resistor R15 are connected in common, and a second end of the sixth capacitor C6 is connected to a second end of the third inductor L3 and a second end of the fifteenth resistor R15.

As an optional implementation manner, the voltage conversion module 104 includes a first resistor R1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a twelfth resistor R12, a fourteenth resistor R14, a nineteenth resistor R19, a twentieth resistor R20, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a thirty-third resistor R30, a third diode D3, a fourth diode D4, an eighth diode D8, a second capacitor C2, a fifth capacitor C5, an eighth capacitor C8, a thirteenth capacitor C13, a seventeenth capacitor C17, a second inductor L2, a main control chip IC1, and a first switch tube Q1;

a first end of a sixth resistor R6 is connected to the LED lamp 10, a second end of the sixth resistor R6 is connected to a first end of a twenty-sixth resistor R26 and a first end of a thirteenth capacitor C13 in common, a second end of the twenty-sixth resistor R26 is connected to a second end of a thirteenth capacitor C13 and a first end of a seventeenth capacitor C17 in ground, a second end of a seventeenth capacitor C17 is connected to a cathode of an eighth diode D8, a first end of a nineteenth resistor R19 is connected to the main control chip IC1, a second end of a nineteenth resistor R19 is connected to a controlled end of the first switching tube Q1, a first end of the first resistor R1, a first end of the fifth resistor R5, a cathode of the third diode D3, a first end of the fifth capacitor C5, a first end of the second capacitor C2 and a first end of the eighth resistor R8 are connected to the LED lamp 10 in common, a second end of the first resistor R1, a seventh end of the seventh resistor R6342, a second end of the fourth resistor R599 and a anode of the seventh resistor R599, a cathode of the fourth diode D4 is connected to the main control chip IC1, a second end of the fifth resistor R5 is connected to a first end of the twelfth resistor R12, a second end of the twelfth resistor R12 is connected to a first end of the twentieth resistor R20, a second end of the twentieth resistor R20, an input end of the first switching tube Q1, a first end of the twenty-seventh resistor R27, a first end of the twenty-eighth resistor R28, and a first end of the thirty-fourth resistor R30 are connected in common, a second end of the twenty-seventh resistor R27, a second end of the twenty-eighth resistor R28, and a second end of the thirty-fourth resistor R30 are connected to ground, a second end of the fifth capacitor C5, an anode of the third diode D3, a first end of the second inductor L2, and an output end of the first switching tube Q1 are connected in common, a second end of the second capacitor C2, a second end of the second inductor L2, a second end of the eighth resistor R8, a second end of the fourteenth resistor R14, and an anode of the fourteenth resistor R8, and an anode 14 are connected in common, a second terminal of the eighth capacitor C8 is connected to ground.

The main control chip IC1 includes but is not limited to CPU system, program memory, data memory, various I/O ports, basic functional units (timer/counter/interrupt system, etc.), analog integrated circuits (such as amplifier, filter, feedback circuit, reference source circuit, switched capacitor circuit, etc.) and digital integrated circuits (such as gate circuit, shaping circuit, etc.) in cooperation with the basic functional units. The system mainly provides the functions of signal processing (including feedback signal, compensation signal and space signal processing), logic control, power management, data storage and the like for the whole mechanism.

As an optional implementation manner, the determination control module includes a second switch Q2, a third switch Q3, a ninth diode D9, a twelfth diode D10, an eleventh diode D11, a ninth capacitor C9, an eleventh capacitor C11, a twelfth capacitor C12, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and a twenty-ninth resistor R29;

a first end of a ninth capacitor C9 is connected to the analog filament module 102, a second end of the ninth capacitor C9 is connected to an anode of a ninth diode D9, a cathode of an eleventh diode D11, a first end of a twenty-fifth resistor R25, a first end of a twelfth capacitor C12 and a controlled end of a second switch tube Q2 in common, a cathode of a ninth diode D9 is connected to a first end of a twenty-fourth resistor R24, a second end of the twenty-fourth resistor R24, a first end of a twenty-ninth resistor R29, a first end of an eleventh capacitor C11, a cathode of a twelfth diode D10 and a controlled end of a third switch tube Q3 in common, an input end of the third switch tube Q3 is connected to the second end of the twenty-ninth resistor R29 and a second end of the eleventh capacitor C11 in common, an anode of the eleventh diode D11, a second end of the twenty-fifth resistor R25, a second end of the twelfth capacitor C5, a second end of the second switch tube Q2, and an output end of the second switch tube Q57324 and the output voltage converting module 104, the output end of the third switching tube Q3 is connected with the LED lamp 10.

Fig. 3 shows an exemplary circuit of a determination control module in a driving circuit of an LED pluggable tube according to another embodiment of the present application, and for convenience of description, only the relevant portions of the present embodiment are shown, which is detailed as follows:

as another alternative implementation, the determination control module 105 includes a fourth switching tube Q4, a thirty-first resistor R31, a thirty-second resistor R32, a thirty-third resistor R33, a thirteenth diode D13, a fourteenth diode D14, a nineteenth capacitor C19, a twentieth capacitor C20, and a twenty-first capacitor C21;

a first terminal of the twentieth capacitor C20 is connected to the analog filament module 102, a second terminal of the twentieth capacitor C20 is connected to an anode of the fourteenth diode D14, a cathode of the fourteenth diode D14, a first terminal of the thirty-second resistor R32, a cathode of the thirteenth diode D13, a first terminal of the thirty-third resistor R33 and a first terminal of the twenty-first capacitor C21 are connected in common, a second terminal of the thirty-second resistor R32, a controlled terminal of the fourth switch tube Q4, a first terminal of the thirty-first resistor R31 and a first terminal of the nineteenth capacitor C19 are connected in common, an input terminal of the fourth switch tube Q4, a second terminal of the thirty-first resistor R31, a second terminal of the nineteenth capacitor C19, an anode of the thirteenth diode D13, a second terminal of the thirty-third resistor R33 and a second terminal of the twenty-first capacitor C21 are connected to ground, and an output terminal of the fourth switch tube Q4 is connected to the LED lamp 10.

Fig. 4 shows an exemplary circuit of a determination control module in a driving circuit of an LED pluggable tube according to still another embodiment of the present application, and for convenience of description, only the parts related to this embodiment are shown, which is detailed as follows:

as still another optional implementation, the determination control module includes a twenty-second capacitor C22, a twenty-third capacitor C23, a twenty-fourth capacitor C24, a rectifier bridge DR1, a fifth switching tube Q5, a fifteenth diode D15, a thirty-fourth resistor R34, a thirty-fifth resistor R35, and a thirty-sixth resistor R36;

a first end of a twenty-second capacitor C22 is connected with the analog filament module 102, a second end of a twenty-second capacitor C22 is connected with the rectifier bridge DR1, a first end of a thirty-fifth resistor R35, a first end of a thirty-fourth resistor R34,

A first end of the twenty-third capacitor C23 and a controlled end of the fifth switch tube Q5 are connected in common, a second end of the thirty-fifth resistor R35, a cathode of the fifteenth diode D15, a first end of the thirty-sixth resistor R36 and a first end of the twenty-fourth capacitor C24 are connected in common, an input end of the fifth switch tube Q5, a second end of the thirty-fourth resistor R34, a second end of the twenty-third capacitor C23, an anode of the fifteenth diode D15, a second end of the thirty-sixth resistor R36 and a second end of the twenty-fourth capacitor C24 are connected to ground, and an output end of the fifth switch tube Q5 is connected to the LED lamp 10.

Fig. 5 shows an exemplary circuit of a determination control module in a driving circuit of an LED pluggable tube according to still another embodiment of the present application, and for convenience of description, only the relevant portions of the present embodiment are shown, which is detailed as follows:

compared to fig. 4, the above-mentioned determination control module 105 further includes a twenty-fifth capacitor C25,

the first end of the twenty-fifth capacitor C25 is connected to the analog filament module 102, and the second end of the twenty-fifth capacitor C25 is connected to the rectifier bridge RD 1.

Specifically, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4 and the fifth switch tube Q5 may each include a triode or a field effect transistor;

the base electrode, the collector electrode and the emitter electrode of the triode respectively correspond to the controlled end, the input end and the output end of the switching tube;

the grid, the drain and the source of the field effect transistor respectively correspond to the controlled end, the input end and the output end of the switch tube.

The application also provides a drive arrangement of LED plug tube, includes:

the drive circuit as described above; and

and the external driving source is used for providing a driving signal for the driving circuit.

It should be noted that, an external driving source (including a commercial power and an electronic ballast) is added to the driving circuit, so that the description and principle description of the overcurrent protection module 101, the analog filament module 102, the rectifying and filtering module 103, the voltage conversion module 104, and the determination control module 105 in the driving circuit can refer to the embodiments of fig. 1 to 5, and details are not repeated here.

The operation principle of the driving circuit and the light emitting system for the at least two LED tubes connected in series is described below with reference to fig. 1-2:

1) the PIN1 and the PIN2 are a group of PIN needles at one end of the LED plug tube, and the PIN3 and the PIN4 are a group of PIN needles at the other end of the LED plug tube; the two groups of PIN PINs are used for receiving driving signals, and the driving signals supply power to the LED lamp 10 through the overcurrent protection module 101, the analog filament module 102 and the rectifying and filtering module 103. The determination control module 105 is configured to detect the driving signal, and select different power supply loops to supply power to the LED lamp 10 according to the frequency characteristic of the driving signal.

2) When the electronic ballast is indirectly connected with the two groups of PIN PINs, the high-frequency alternating current signal passes through the ninth capacitor C9 and then drives the third switching tube Q3 to be conducted; meanwhile, the second switch Q2 is driven to conduct, and the pin3 signal of the main control chip IC1 is pulled low. The main control chip IC1 recognizes the low level signal of the 3 rd pin, so that the 1 st pin of the main control chip IC1 outputs a high level signal to turn on the third transistor Q3, and the 11 th pin does not output a PWM driving signal, so that the first transistor Q1 is turned off. The current loop at this time is: the driving signal directly supplies power to the LED lamp 10 after passing through the overcurrent protection module 101, the analog filament module 102, and the rectification filter module 103.

3) When the two groups of PIN PINs are indirectly connected with AC power frequency commercial power, the power frequency alternating current signal cannot pass through the ninth capacitor C9, and the third switch tube Q3 cannot be conducted. Meanwhile, the second switch Q2 is also not turned on, and the pin3 signal of the main control chip IC1 is not at low level. The main control chip IC1 recognizes the level signal of the 3 rd pin, so that the 1 st pin of the main control chip IC1 outputs a low level signal, the third switching tube Q3 is not turned on, and at the same time, the 11 th pin of the main control chip IC1 outputs a PWM driving signal, so that the Q1 works in a conducting state. The current loop at this time is: the driving signal supplies power to the LED lamp 10 after passing through the overcurrent protection module 101, the analog filament module 102, the rectifying and filtering module 103, and the voltage conversion module 104.

If the operation principle of the determination control module 105 in fig. 3-5 is substantially the same as the operation principle described above, detailed description thereof is omitted.

To sum up, above-mentioned drive circuit and drive arrangement of LED plug pipe in this application embodiment, including overcurrent protection module, simulation filament module, rectifier and filter module, voltage conversion module and judgement control module, the outside driving source through judging the access is commercial power or electronic ballast: when the external driving source is commercial power, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module, the rectification filter module and the voltage conversion module and then drive the LED lamp to work; or when the external driving source is an electronic ballast, the driving signal is controlled to sequentially pass through the overcurrent protection module, the analog filament module and the rectification filter module to drive the LED lamp to work. Therefore, the LED plug tube can be compatible with the commercial power and the electronic ballast, when the old electronic ballast is damaged and the LED plug tube is not damaged, the circuit inside the lamp holder can be directly changed, the electronic ballast is powered off by a bypass, the original LED plug tube is installed again, the replacement is not required to be purchased again, the LED plug tube is economical and convenient, the problem that the maintenance cost is increased due to the fact that the existing LED plug tube driving technology cannot be compatible with the commercial power and the electronic ballast at the same time is solved.

Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.

Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.