Electromagnetic compatibility structure of intelligent control device of waterproof LED lamp strip

Abstract

An electromagnetic compatibility structure of a waterproof LED lamp strip intelligent control device comprises a power supply device box body, one side of an inner cavity of the power supply device box body is a glue filling area, the other side of the inner cavity of the power supply device box body is a non-glue filling area, and a baffle is arranged between the glue filling area and the non-glue filling area; an input circuit board is installed in the glue filling area close to the edge side of the power supply device box body, the input circuit board is connected with an input power line, the input circuit board is further connected with a main power circuit board, glue filling is carried out after the input circuit board and the main power circuit board are installed in the glue filling area, an EMC circuit board is arranged in the non-glue-filling area, and the EMC circuit board is connected with the power supply device box body. The EMC circuit board is connected with the main power circuit board through a wire wound around the upper portion of the baffle, and the EMC circuit board supplies energy to the lamp through an output power line.

Description

Technical Field

[0001] The utility model relates to the field of LED power supplies, in particular to an electromagnetic compatibility structure of a waterproof LED strip intelligent control device. Background Art

[0002] With the development of technology and the improvement of living standards, intelligent lighting control devices have gradually replaced traditional lighting devices and entered the public's field of vision. While meeting the needs of consumers for a better life, intelligence must also comply with national standards and technical specifications.

[0003] In existing intelligent LED control devices, components are arranged densely, and interference between circuits is relatively large, making it difficult to meet current electromagnetic compatibility requirements. Especially for waterproof products with internal potting, components are connected through the colloid. The dielectric constant has increased by dozens of times compared to air, and high-frequency signals can be directly transmitted to the output part through the colloid, resulting in difficult-to-solve electromagnetic compatibility problems. Summary of the Utility Model

[0004] To solve the above problems, the technical solution provides an electromagnetic compatibility structure of a waterproof LED strip intelligent control device.

[0005] To achieve the above object, the technical solution is as follows:

[0006] An electromagnetic compatibility structure of a waterproof LED strip intelligent control device includes a power supply device box body. One side of the inner cavity of the power supply device box body is a potting area, and the other side is a non-potting area. A baffle is provided between the potting area and the non-potting area;

[0007] In the potting area, near the edge side of the power supply device box body, an input circuit board is used for installation. The input circuit board is connected to an input power line, and the input circuit board is also connected to a main power circuit board. After the input circuit board and the main power circuit board are installed in the potting area, potting is carried out. An EMC circuit board is provided in the non-potting area. The EMC circuit board is connected to the main power circuit board through a wire bypassing above the baffle, and the EMC circuit board also supplies power to the lamp through an output power line.

[0008] In some embodiments, it further includes a cover body detachably connected to the power supply device box body.

[0009] In some embodiments, the inner wall of the power supply device box body is provided with a step for cooperating with the cover body.

[0010] In some embodiments, in the circuit part of the input circuit board:

[0011] It includes an optocoupler U8. The light-emitting end of the optocoupler U8 is connected to the zero-fire wire of the input end, the emitter is grounded, and the collector is connected to the input end of the main control unit U7;

[0012] The output end of the main control unit U7 is connected to the input end of the main control unit U6. The output end of the main control unit U6 is connected to the gate of the MOS transistor Q4. The source is grounded, and the drain is connected to the output end through the inductor L4.

[0013] The output end of the main control unit U7 is also connected to the input end of the main control unit U5. The output end of the main control unit U5 is connected to the gate of the MOS transistor Q3. The source is grounded, and the drain receives a voltage. This voltage is also connected to the primary coil of the transformer LF3 through the inductor L4, and the secondary coil supplies energy to the output end.

[0014] The beneficial effects of this application are as follows:

[0015] This application adopts a scheme in which the high-frequency dimming control part is isolated from the output EMC control part, which is of great significance for reducing electromagnetic interference, meeting electromagnetic compatibility standards, and promoting the development of the intelligent lighting industry. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic side view of an embodiment of the present invention;

[0019] Figure 3 is a schematic circuit structural diagram of an embodiment of the present invention. Detailed Embodiments

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the following will further describe the present invention in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Please refer to Figures 1-3 As shown, an electromagnetic compatibility structure of a waterproof LED strip intelligent control device includes a power supply device box body 1. One side of the inner cavity of the power supply device box body 1 is a potting area 2, and the other side is a non-potting area 3. A baffle 4 is provided between the potting area 2 and the non-potting area 3;

[0022] Inside the potting area 2, near the edge of the power supply device box 1, an input circuit board 11 is installed. The input circuit board 11 is connected to the input power cord 5, and the input circuit board 11 is also connected to the main power circuit board 12. After the input circuit board 11 and the main power circuit board 12 are installed in the potting area 2, potting is carried out. An EMC circuit board 13 is provided in the non-potting area 3. Among them, the EMC circuit board 13 is connected to the main power circuit board 12 through a wire that bypasses above the baffle 4, and the EMC circuit board 13 also supplies power to the lamp through the output power cord 6.

[0023] When the traditional potted intelligent control device works, the high-frequency dimming signal generated by the input and main power device parts will be directly transmitted to the EMC control part through the colloid, causing electromagnetic interference on the output cable. Therefore, in this application, the box is divided into a potting area and a non-potting area by a baffle. During installation, the input circuit board and the main power circuit board are placed in the potting area for gluing, while the non-potting area installs the EMC circuit board, and then Figure 2 Connect the wires according to the requirements, use the baffle for isolation, cancel the colloid for conduction, so as to disconnect the transmission loop of the high-frequency interference signal and effectively improve the electromagnetic compatibility test result.

[0024] Compared with before, when the electromagnetic compatibility conducted radiation test is carried out using this device, the interference signals in the frequency bands of 70MHz - 90MHz and 100 - 200MHz are significantly reduced, and there is still a sufficient margin from the standard value, which can effectively improve the electromagnetic compatibility problem.

[0025] In this embodiment, it further includes a cover body 7 detachably connected to the power supply device box 1, which has the effect of facilitating installation.

[0026] In this embodiment, the inner wall of the power supply device box 1 is provided with a step 8 that cooperates with the cover body 7.

[0027] In this embodiment, in the circuit part of the input circuit board 11:

[0028] It includes an optocoupler U8. The light-emitting end of the optocoupler U8 is connected to the zero-fire wire at the input end, the emitter is grounded, and the collector is connected to the input end of the main control unit U7;

[0029] The output end of the main control unit U7 is connected to the input end of the main control unit U6. The output end of the main control unit U6 is connected to the gate of the MOS transistor Q4, the source is grounded, and the drain is connected to the output end through an inductor L4;

[0030] The output end of the main control unit U7 is also connected to the input end of the main control unit U5. The output end of the main control unit U5 is connected to the gate of the MOS transistor Q3. The source is grounded, and the drain receives a voltage, which is also connected to the primary coil of the transformer LF3 through the inductor L4. The secondary coil supplies energy to the output end.

[0031] When the input end is powered on, the emitter and collector of the optocoupler U8 are connected, so that the sampling input end of the main control unit U7 is grounded, thereby sending a signal to the main control unit U6. Then, the main control unit U6 sends a signal to the MOS transistor Q4, so that the output end is grounded through the inductor L4. Similarly, the main control unit U7 sends a signal to the main control unit U5 to make the MOS transistor Q3 conduct. The +360V voltage passes through the MOS transistor Q3 to ground, and the primary power supply of the transformer LF3 is disconnected, thereby disconnecting the output to the LED lamp.

[0032] The above is only the preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are all within the protection scope of the present application.

Claims

1. An electromagnetic compatibility structure of a waterproof LED light strip intelligent control device, characterized in that: The power supply device box body (1) comprises a glue injection area (2) on one side of the inner cavity of the power supply device box body (1), and a non-glue injection area (3) on the other side, and a baffle (4) is provided between the glue injection area (2) and the non-glue injection area (3); The glue-filling area (2) is close to the edge of the power supply device box body (1) for installing an input circuit board (11), the input circuit board (11) is connected to the input power line (5), and the input circuit board (11) is also connected to the main power circuit board (12). The glue-filling area (2) is glue-filled after the input circuit board (11) and the main power circuit board (12) are installed. An EMC circuit board (13) is provided in the non-glue-filling area (3), wherein the EMC circuit board (13) and the main power circuit board (12) are connected via a wire bypassing above the baffle (4), and the EMC circuit board (13) also supplies energy to the lamp via the output power line (6).

2. The electromagnetic compatibility structure of the waterproof LED light strip intelligent control device according to claim 1, characterized in that: It also comprises a cover body (7) which is detachably connected to the power supply device box body (1).

3. The electromagnetic compatibility structure of the waterproof LED light strip intelligent control device according to claim 2, characterized in that: The inner wall of the power supply device box body (1) is provided with a step (8) that matches the cover body (7).

4. The electromagnetic compatibility structure of the waterproof LED light strip intelligent control device according to claim 1, characterized in that: In the circuit section of the input circuit board (11): It includes an optical coupler U8, the light-emitting end of the optical coupler U8 is connected to the neutral and live wires of the input end, the emitter is grounded, and the collector is connected to the input end of the main control unit U7; The output end of the main control unit U7 is connected to the input end of the main control unit U6, the output end of the main control unit U6 is connected to the gate of the MOS tube Q4, the source is grounded, and the drain is connected to the output end through the inductor L4; The output end of the main control unit U7 is also connected to the input end of the main control unit U5. The output end of the main control unit U5 is connected to the gate of the MOS tube Q3, the source is grounded, and the drain receives a voltage. The voltage is also connected to the primary coil of the transformer LF3 through the inductor L4, and its secondary coil supplies energy to the output end.

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