Explosion-proof driving power supply and LED lighting lamp

Abstract

This utility model discloses an explosion-proof driving power supply and LED lighting fixture, including a housing and a circuit assembly sealed with glue inside the housing cavity. The circuit assembly includes: a main driving circuit for driving the load and controlling the on / off state of the main driving circuit; a backup charging circuit for charging a backup battery; an emergency power supply circuit electrically connected to the backup battery for driving the load in emergency mode; and a control circuit electrically connected to the main driving circuit, backup charging circuit, and emergency power supply circuit. The control circuit monitors the on / off state of the backup charging circuit in real time and activates the emergency mode when the backup charging circuit is disconnected. By integrating the main driving circuit, backup charging circuit, emergency power supply circuit, and control circuit into the same housing, the explosion-proof driving power supply and LED lighting fixture can perform both daily lighting and emergency lighting functions, reducing the expenditure cost of the emergency lighting system and improving the system response speed and safety.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof lighting technology, and in particular to an explosion-proof driver power supply and an LED lighting fixture. Background Technology

[0002] In flammable and explosive environments such as petrochemical plants, hazardous chemical storage facilities, ships and offshore platforms, and coal mines, electrical equipment requires explosion-proof design. Among these, explosion-proof lighting fixtures are one of the most important pieces of equipment. Commonly used explosion-proof lighting fixtures mainly consist of a light source component and its corresponding driving power supply. The driving power supply is generally housed in an explosion-proof enclosure to enhance its explosion-proof performance. In addition to explosion-proof performance, the lifespan of the lighting fixture, its energy conversion efficiency, and its heat dissipation performance are also key factors to consider when designing the driving power supply. However, emergency functions are generally lacking. In existing technologies, to meet the emergency lighting needs of such locations, an external emergency lighting system is often required, leading to equipment redundancy, occupying installation space, and increasing costs. Utility Model Content

[0003] The purpose of this invention is to provide an explosion-proof driver power supply and an LED lighting fixture, so that the explosion-proof lighting fixture can have both daily lighting and emergency lighting functions through the improvement of the driver power supply, thereby reducing the expenditure cost of emergency lighting systems.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: an explosion-proof driving power supply includes a housing and a circuit assembly sealed with glue inside the housing cavity. The circuit assembly is connected to a main power input port, a backup power input port, a main power output port, an emergency output port, a battery interface, and leads. The circuit assembly includes: a main power drive circuit for driving the load and controlling the on / off state of the main power drive circuit; a backup power charging circuit for charging the backup battery; an emergency power supply circuit electrically connected to the backup battery for driving the load in emergency mode; and a control circuit electrically connected to the main power drive circuit, the backup power charging circuit, and the emergency power supply circuit. The control circuit monitors the on / off state of the backup power charging circuit in real time, and activates the emergency mode when the backup power charging circuit is disconnected.

[0005] Furthermore, the main power drive circuit includes: a first surge protection module, a first rectifier module, a PFC constant voltage module, and a step-down constant current drive line connected in sequence. The first surge protection module is connected to the main power input port, and the step-down constant current drive line is connected to the main power output port.

[0006] Furthermore, the main electric drive circuit also includes an over-temperature protection circuit, which is used to cut off the buck constant current drive circuit when the temperature of the main electric drive circuit exceeds a set value.

[0007] Furthermore, the backup power charging circuit includes a second surge protection module, a second rectifier module, and a PFC constant voltage and constant current charging line connected in sequence. The second surge protection module is connected to the backup power input port, and the PFC constant voltage and constant current charging line is connected to the battery interface.

[0008] Furthermore, the emergency power supply circuit is a boost constant current circuit connected to the output terminal of the backup battery, and the boost constant current circuit is connected to the emergency output port.

[0009] Furthermore, the control circuit includes a surface-mount microcontroller and a detection unit, a current setting unit, an indicator light circuit, and an intrinsically safe test circuit connected to the microcontroller; the leads include a status indicator line, a test signal line, and a programming line; the detection unit is used to detect the on / off status of the main power drive circuit and the backup power charging circuit; the current setting unit is connected to the programming line, and the host computer writes to the microcontroller through the programming line to set the current of the backup power charging circuit and the current of the emergency power supply circuit; the indicator light circuit is connected to the LED indicator light through the status indicator line to drive the LED indicator light to provide light indication of the working status of the circuit components; the intrinsically safe test circuit is connected to the test button through the test signal line for testing the emergency function of the circuit components.

[0010] Furthermore, when the emergency mode is activated, the microcontroller triggers the emergency power supply circuit within 500ms to boost the battery voltage to a constant voltage and constant current output to maintain emergency lighting.

[0011] Furthermore, in emergency mode, the LED signal lights flash red.

[0012] Furthermore, the circuit assembly and the housing are sealed by a potting compound to provide explosion-proof protection.

[0013] This utility model also provides an explosion-proof LED lighting fixture, including the explosion-proof driving power supply and lamp head assembly described in any of the above-mentioned embodiments, wherein the lamp head assembly is provided with an LED light source assembly adapted to the driving power supply.

[0014] This utility model provides an explosion-proof driver power supply and LED lighting fixture. Compared with the prior art, by integrating the conventional driver power supply module (main drive circuit) and the emergency module (backup charging circuit and emergency power supply circuit) into a single housing, it reduces external wiring points, improves overall explosion-proof performance, and allows the explosion-proof driver power supply and LED lighting fixture to function as both daily and emergency lighting. This eliminates the need for a separate emergency lighting system, reducing its cost, minimizing equipment redundancy, and saving installation space. The control circuit design improves system response speed and safety. The combination of the explosion-proof driver power supply and the lamp holder assembly with LED light source components provides a novel explosion-proof LED lighting fixture with emergency function. It has a simple structure, is easy to install, and effectively reduces construction and application costs, showing good application prospects and market benefits. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0016] Figure 1 This is a schematic diagram of the external structure of the explosion-proof drive power supply in the embodiments of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the explosion-proof drive power supply in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the main electric drive circuit structure in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the main electric drive circuit in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the backup charging circuit structure in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the backup charging circuit in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the emergency power supply circuit structure in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the emergency power supply circuit in an embodiment of this utility model;

[0024] Figure 9 This is a schematic diagram of the control circuit structure in an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the control circuit in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached diagram: 10. Housing; 11. Main power input port; 12. Backup power input port; 13. Main power output port; 14. Emergency output port; 15. Battery interface; 16. Lead wire; 161. Status indicator line; 162. Test signal line; 163. Programming line; 20. Circuit assembly; 21. Main power drive circuit; 211. First surge protection module; 212. First rectifier module; 213. PFC constant voltage module; 214. Step-down constant voltage module. 215. Over-temperature protection circuit; 22. Backup charging circuit; 221. Second surge protection module; 222. Second rectifier module; 223. PFC constant voltage and constant current charging circuit; 23. Emergency power supply circuit; 231. Boost constant current circuit; 24. Control circuit; 241. Detection unit; 242. Current setting unit; 243. Indicator light circuit; 244. Intrinsically safe test circuit; 245. Microcontroller; 30. Sealing component. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0028] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] like Figure 1-2As shown, one embodiment of this utility model relates to an explosion-proof driving power supply, including a housing 10, a circuit assembly 20 disposed within the housing 10, and a sealing member 30 disposed between the circuit assembly 20 and the housing 10 assembly. The sealing member 30 securely seals the circuit assembly 20 within the housing. In one example, the sealing member 30, formed by a potting compound, provides explosion-proof protection between the circuit assembly 20 and the housing 10. The potting compound is a two-component thermally conductive potting silicone, the thickness of which covers the circuit assembly 20 and is tightly fitted to the inner wall of the housing 10, thereby increasing the overall explosion-proof performance of the explosion-proof driving power supply. The housing 10 integrates a main power input port 11, a backup power input port 12, a main power output port 13, an emergency output port 14, a battery interface 15, and leads 16, all connected to the circuit assembly 20. The circuit assembly 20 includes: a main power drive circuit 21 for driving the load and controlling its on / off state; a backup power charging circuit 22 for charging a backup battery (not shown in the attached diagram); an emergency power supply circuit 23 electrically connected to the backup battery for driving the load in emergency mode; and a control circuit 24 electrically connected to the main power drive circuit 21, backup power charging circuit 22, and emergency power supply circuit 23. The control circuit 24 monitors the on / off state of the backup power charging circuit 22 in real time, and activates the emergency mode when the backup power charging circuit 22 is disconnected. When the emergency mode is activated, the microcontroller 245 triggers the emergency power supply circuit 23 within 500ms, boosting the battery voltage to a constant voltage / constant current output to maintain emergency lighting. In emergency mode, the LED indicator light (not shown in the attached diagram) flashes red.

[0030] like Figure 3-4 As shown, one embodiment relates to an explosion-proof drive power supply, wherein the main drive circuit 21 is connected to the mains power supply via the main power input port 11, using the mains power as the power source. The main drive circuit 21 includes: a first surge protection module 211, a first rectifier module 212, a PFC constant voltage module 213, and a step-down constant current drive line 214, which are connected in sequence. The first surge protection module 211 is connected to the main power input port 11, and the step-down constant current drive line 214 is connected to the main power output port 13. In one example, the main power input port 11 is connected to 220V AC, and after passing through the first surge protection module 211, the first rectifier module 212, and the PFC constant voltage module 213, it outputs 60V DC to the step-down constant current drive line 214, providing power to the load through the main power output port 13. Preferably, the main electric drive circuit 21 further includes an over-temperature protection circuit 215, which is used to cut off the step-down constant current drive circuit 214 and disconnect the main electric drive circuit 21 when the temperature of the main electric drive circuit 21 exceeds the set value, so as to increase the safety of the explosion-proof drive power supply.

[0031] like Figure 5-6As shown, one embodiment relates to an explosion-proof drive power supply, wherein a backup charging circuit 22 is connected to mains power or an independent power supply device via a backup power input port 12. The backup charging circuit 22 includes a second surge protection module 221, a second rectifier module 222, and a PFC constant voltage and constant current charging line 223, which are connected in sequence. The second surge protection module 221 is connected to the backup power input port 12, and the PFC constant voltage and constant current charging line 223 is connected to the battery interface 15. In one example, the backup power input port 12 is connected to an independent power supply device, and the backup battery is charged via the backup charging circuit 22 and the battery interface 15.

[0032] like Figure 7-8 As shown, one embodiment involves an explosion-proof drive power supply, wherein the emergency power supply circuit 23 is a boost constant current line 231 connected to the output terminal of the backup battery, and the boost constant current line 231 is connected to the emergency output port 14. In one example, when the emergency power supply circuit 23 is activated, the control circuit 24 can actively cut off the main drive circuit 21, and the backup battery serves as the power supply. The emergency power supply circuit 23 provides power to the load. To meet the power requirements of the load, the emergency power supply circuit 23 includes a boost constant current line 231, which boosts the battery power supply voltage to a constant voltage and constant current output.

[0033] like Figure 9-10As shown, in one embodiment, an explosion-proof driving power supply is involved. The control circuit 24 includes a surface-mount microcontroller 245, and a detection unit 241, a current setting unit 242, an indicator light line 243, and an intrinsically safe test line 244 connected to the microcontroller 245. The lead 16 connected to the circuit assembly 20 includes a status indicator line 161, a test signal line 162, and a programming line 163. The detection unit 241 is used to detect the on / off status of the main power drive circuit 21 and the backup power charging circuit 22, and to monitor the on / off status of the backup power charging circuit 22 in real time. The current setting unit 242 is connected to the programming line 163, allowing the host computer to write to the microcontroller 245 via the programming line 163 to set the current of the backup power charging circuit 22 and the emergency power supply circuit 23. By setting the current of the emergency power supply circuit 23, the microcontroller 245 controls the battery boost constant current line 231 in the emergency power supply circuit 23 to output the set emergency current to meet the load's usage requirements. Indicator light line 243 is connected to LED indicator light via status indicator line 161, driving the LED indicator light to provide light indication of the working status of the circuit component 20; intrinsically safe test line 244 is connected to test button (not shown in the attached figure) via test signal line 162, used for emergency function testing of circuit component 20. When the test button is pressed, the microcontroller 245 receives a signal to control the main power drive circuit 21 and the backup power charging circuit 22 to shut down, triggering the emergency power supply circuit 23. Through the boost constant current circuit 231, the battery outputs boost constant voltage and constant current, entering emergency state, where the battery provides power to the load. After the test button is released, the main power drive circuit 21 and the backup power charging circuit 22 are restored.

[0034] In one example, when the backup charging circuit 22 charges the backup battery, the LED indicator flashes green; when the battery is fully charged and no battery fault is detected, the LED indicator remains solid green; when the emergency mode is activated, the LED indicator flashes red; when the control circuit 24 detects a battery fault, the LED indicator remains solid red; and when the intrinsically safe test circuit 244 is activated to perform emergency function tests on the circuit component 20, the LED indicator flashes alternately between green and red.

[0035] One embodiment of this utility model relates to an explosion-proof LED lighting fixture, comprising any one of the above-mentioned explosion-proof driving power supplies and a lamp head assembly. The lamp head assembly is provided with an LED light source assembly adapted to the driving power supply. Preferably, the lamp head assembly adopts an increased safety type lamp housing to form an explosion-proof lighting fixture, which can reduce material and production costs, facilitate on-site installation, effectively reduce the construction and application costs of lighting fixtures, and has good application prospects and market benefits.

[0036] This utility model provides an explosion-proof driver power supply and LED lighting fixture. By integrating a conventional driver power supply module (main drive circuit) and an emergency module (backup charging circuit and emergency power supply circuit) into a single housing, it reduces external wiring points, improves overall explosion-proof performance, and allows the explosion-proof driver power supply and LED lighting fixture to function as both daily and emergency lighting. This eliminates the need for a separate emergency lighting system, reducing its cost, minimizing equipment redundancy, and saving installation space. The control circuit design enhances system response speed and safety. The combination of the explosion-proof driver power supply and the lamp holder assembly with LED light source components provides a novel explosion-proof LED lighting fixture with emergency functions. This fixture has a simple structure, is easy to install, and effectively reduces construction and application costs, demonstrating promising application prospects and market benefits.

[0037] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An explosion-proof driving power source characterized by comprising: The device includes a housing (10) and a circuit assembly (20) sealed with potting compound inside the housing (10). The circuit assembly (20) is connected to a main power input port (11), a backup power input port (12), a main power output port (13), an emergency output port (14), a battery interface (15), and leads (16). The circuit assembly (20) includes: a main power drive circuit (21) for driving the load and controlling the on / off state of the main power drive circuit (21); a backup power charging circuit (22) for charging the backup battery; an emergency power supply circuit (23) electrically connected to the backup battery for driving the load in emergency mode; and a control circuit (24) electrically connected to the main power drive circuit (21), the backup power charging circuit (22), and the emergency power supply circuit (23). The control circuit (24) monitors the on / off state of the backup power charging circuit (22) in real time, and activates the emergency mode when the backup power charging circuit (22) is disconnected.

2. The explosion-proof driving power source according to claim 1, characterized by The main power drive circuit (21) includes: a first surge protection module (211), a first rectifier module (212), a PFC constant voltage module (213), and a step-down constant current drive line (214) connected in sequence. The first surge protection module (211) is connected to the main power input port (11), and the step-down constant current drive line (214) is connected to the main power output port (13).

3. The explosion-proof driving power source according to claim 2, characterized by The main electric drive circuit (21) also includes an over-temperature protection line (215) for cutting off the step-down constant current drive line (214) when the temperature of the main electric drive circuit (21) exceeds a set value.

4. The explosion-proof driving power source according to claim 1, characterized by The backup power charging circuit (22) includes a second surge protection module (221), a second rectifier module (222), and a PFC constant voltage and constant current charging line (223) connected in sequence. The second surge protection module (221) is connected to the backup power input port (12), and the PFC constant voltage and constant current charging line (223) is connected to the battery interface (15).

5. The explosion-proof driving power source according to claim 1, characterized by The emergency power supply circuit (23) is a boost constant current line (231) connected to the output terminal of the backup battery, and the boost constant current line (231) is connected to the emergency output port (14).

6. The explosion-proof driving power source according to claim 1, characterized by The control circuit (24) includes a surface-mount microcontroller (245) and a detection unit (241), a current setting unit (242), an indicator light circuit (243), and an intrinsically safe test circuit (244) connected to the microcontroller (245); the lead (16) includes a status indicator line (161), a test signal line (162), and a programming line (163); the detection unit (241) is used to detect the on / off status of the main power drive circuit (21) and the backup power charging circuit (22); the current setting unit (242) and the programming line (163) are connected to the microcontroller (245). 63) Connection: The host computer writes to the microcontroller (245) through the programming line (163) to set the current of the backup charging circuit (22) and the current of the emergency power supply circuit (23); the indicator light line (243) is connected to the LED signal light through the status indicator line (161) to drive the LED signal light to provide light indication of the working status of the circuit component (20); the intrinsically safe test line (244) is connected to the test button through the test signal line (162) for testing the emergency function of the circuit component (20).

7. The explosion-proof driving power source according to claim 6, characterized by When the emergency mode is activated, the microcontroller (245) triggers the emergency power supply circuit (23) within 500ms to boost the battery voltage to constant voltage and constant current output to maintain emergency lighting.

8. The explosion-proof driving power source according to claim 7, characterized by In emergency mode, the LED indicator light flashes red.

9. The explosion-proof driving power source according to claim 1, characterized by An explosion-proof protection is formed between the circuit assembly (20) and the housing (10) by a seal (30) formed by a potting compound.

10. An explosion-proof LED lighting fixture, characterized by, The invention includes the explosion-proof driving power supply and lamp holder assembly as described in any one of claims 1-9, wherein the lamp holder assembly is provided with an LED light source assembly adapted to the driving power supply.

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