A lighting driving circuit and a lighting lamp

Abstract

This invention provides a lighting driving circuit, including a power supply module, a driving module, an operation module, a self-locking module, and a control module. The power supply module has a power supply control terminal for receiving power supply control signals, which selectively allows or stops the output of electrical energy based on whether a power supply control signal is received. The driving module is connected to the power supply module. The operation module includes an operation switch connected in series between the power supply control signal and the power supply control terminal. The self-locking module has a self-locking control terminal for receiving self-locking control signals, and is connected in series between the power supply control signal and the power supply control terminal, selectively turning the connection between the power supply control signal and the power supply control terminal on or off based on the state of the self-locking control signal. The control module is connected to the power supply module and also connected to the operation module and the self-locking module. The lighting driving circuit of this invention has standby power consumption as low as zero or near-zero power consumption. This invention also provides a lighting fixture.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment, and in particular to a lighting drive circuit and a lighting fixture. Background Technology

[0002] The existing battery-powered lighting fixtures' driver circuits suffer from high standby power consumption and short battery life because their MCUs need to be in standby mode to identify the operation status of each button, especially when a single button performs multiple commands through different operation methods. Traditional MCUs typically have standby power consumption in the microampere range, and the cumulative standby power consumption of LED driver chips further shortens battery life. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a lighting drive circuit that, by incorporating a self-locking module, can achieve self-locking after the control module receives power to ensure continuous power supply from the power supply module. It features a simple structure, convenient operation, one-button start-up and self-locking, and standby power consumption as low as zero or near-zero. This utility model also provides a lighting fixture.

[0004] To achieve the above objectives, the present invention employs the following technical solution: A lighting driving circuit for driving a lighting module, comprising: A power supply module having a power supply control terminal for receiving a power supply control signal, and the power supply module being configured to: in response to a power supply control signal received by the power supply control terminal, selectively allow or stop the external output of electrical energy depending on whether the power supply control signal is received; A drive module, which is connected to the power supply module to obtain electrical energy and output it to drive the lighting module; The operation module includes an operation switch for receiving physical operations from the user. The operation switch is connected in series between the power supply control signal and the power supply control terminal to switch the connection between the two. The operation module outputs a corresponding switch signal according to the state of the operation switch. The self-locking module has a self-locking control terminal for receiving a self-locking control signal, and the self-locking module is connected in series between the power supply control signal and the power supply control terminal. The self-locking module is configured to: respond to the self-locking control signal received by the self-locking control terminal, selectively turn on or off the connection between the power supply control signal and the power supply control terminal according to the state of the self-locking control signal. A control module is connected to the power supply module to obtain electrical energy. The control module is also connected to the self-locking control terminal of the operation module and the self-locking module, and the control module is configured to control the state of the self-locking control signal it outputs to the self-locking control terminal according to the switch signal it receives.

[0005] Furthermore, the power supply module has a first positive power supply, a second positive power supply, and a negative power supply, and the voltage value output by the second positive power supply meets the operating voltage of the chip in the circuit, and the negative power supply is connected to the reference ground; The driving module is connected to the positive terminal of the first power supply to modulate the voltage output from the positive terminal of the first power supply. The power supply terminal of the control module is connected to the positive terminal of the second power supply, and its ground terminal is connected to the reference ground to obtain operating power.

[0006] Furthermore, the power supply module includes a voltage regulation module, which is configured to connect to the positive terminal of the first power supply and convert the voltage value output by the positive terminal of the first power supply into the voltage value output by the positive terminal of the second power supply and output it.

[0007] Furthermore, the voltage regulation module includes a sixteenth resistor and a first Zener diode. One end of the sixteenth resistor is connected to the positive terminal of the first power supply, and the other end is connected to the cathode of the first Zener diode. The anode of the first Zener diode is connected to the reference ground.

[0008] Furthermore, the voltage regulating module also includes a fourth diode connected in series between the sixteenth resistor and the positive terminal of the first power supply, wherein the anode of the fourth diode is connected to the positive terminal of the first power supply, and the cathode of the fourth diode is connected to the sixteenth resistor.

[0009] Furthermore, the power supply control signal is the first power supply positive terminal output voltage of the power supply module; The first operating switch terminal of the operating switch is connected to the first positive power supply terminal of the power supply module, and the second operating switch terminal of the operating switch is connected to the power supply control terminal of the power supply module.

[0010] Furthermore, a first diode is connected in series between the second operating switch terminal of the operating switch and the power supply control terminal of the power supply module, and the anode of the first diode is connected to the second operating switch terminal of the operating switch, and the cathode of the first diode is connected to the power supply control terminal of the power supply module.

[0011] Furthermore, the operation module includes a switch signal output unit with a switch signal output terminal. The switch signal output unit is connected to the operation switch and outputs a corresponding switch signal to the outside through the switch signal output terminal according to the state of the operation switch.

[0012] Furthermore, the switch signal output unit is configured such that: when the operation switch is on, the switch signal output terminal outputs a low-level switch signal; and when the operation switch is off, the switch signal output terminal outputs a high-level switch signal.

[0013] Further, the switch signal output unit includes a first resistor, a second resistor, a third resistor, and a first controllable switch. The second operating switch terminal of the operating switch is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, the other end of the second resistor is connected to the reference ground, the first switch control terminal of the first controllable switch is connected to the connection point of the first resistor and the second resistor, the first switch terminal of the first controllable switch is connected to one end of the third resistor, the second switch terminal of the first controllable switch is connected to the reference ground, and the other end of the third resistor is connected to the positive terminal of the second power supply. The connection point of the third resistor and the first switch terminal of the first controllable switch forms the switch signal output terminal. The first controllable switch is configured such that when its first switch control terminal is high, it controls the first switch terminal and the second switch terminal to be turned on, and when its first switch control terminal is low, it controls the first switch terminal and the second switch terminal to be turned off.

[0014] Furthermore, the first controllable switch is configured as a first transistor, and the first transistor is an NPN transistor. The collector (C) of the first transistor is formed as the first switch terminal, the emitter (E) of the first transistor is formed as the second switch terminal, and the base (B) of the first transistor is formed as the first switch control terminal.

[0015] Furthermore, the switch signal output unit also includes a second diode connected in series between the operating switch and the first resistor, the anode of the second diode being connected to the second operating switch terminal of the operating switch, and the cathode of the second diode being connected to the second resistor.

[0016] Furthermore, the switch signal output unit also includes a second capacitor, one end of which is connected to the switch signal output terminal, and the other end of which is connected to the reference ground.

[0017] Furthermore, the power supply control signal is the first power supply positive terminal output voltage of the power supply module; The self-locking module has a first self-locking switch terminal and a second self-locking switch terminal. The first self-locking switch terminal is connected to the first positive power supply terminal of the power supply module, and the second self-locking switch terminal is connected to the power supply control terminal of the power supply module. The self-locking module is configured to control the on / off state between the first self-locking switch terminal and the second self-locking switch terminal according to the state of the self-locking control signal.

[0018] Furthermore, a third diode is connected in series between the second self-locking switch terminal of the self-locking module and the power supply control terminal of the power supply module, and the anode of the third diode is connected to the second self-locking switch terminal of the self-locking module, and the cathode of the third diode is connected to the power supply control terminal of the power supply module.

[0019] Further, the self-locking module includes a second controllable switch and a third controllable switch. The second switch control terminal of the second controllable switch is formed as the self-locking control terminal, the fifth switch terminal of the third controllable switch is formed as the first self-locking switch terminal, and the sixth switch terminal of the third controllable switch is formed as the second self-locking switch terminal. The control module has a self-locking signal output terminal for outputting a self-locking control signal, and the self-locking signal output terminal of the control module is connected to the second switch control terminal of the second controllable switch and controls the state of the self-locking control signal output terminal according to the switch signal it receives. The second controllable switch is configured to control its on / off state according to the state of the self-locking control signal received by its second switch control terminal. The third controllable switch is configured to be on when the second controllable switch is on and off when the second controllable switch is off.

[0020] Further, the self-locking module includes a fourth resistor and a seventh resistor. The second controllable switch's second switch control terminal is connected to one end of the seventh resistor and the other end is connected to the reference ground. The second controllable switch has a third switch terminal and a fourth switch terminal. The third switch terminal of the second controllable switch is connected to the third switch control terminal of the third controllable switch. The fourth switch terminal of the second controllable switch is connected to the reference ground. The third switch control terminal of the third controllable switch is connected to the positive terminal of the first power supply through the fourth resistor. The second controllable switch is configured such that when its second switch control terminal is high, it controls the third switch terminal and the fourth switch terminal to conduct; when its second switch control terminal is low, it controls the third switch terminal and the fourth switch terminal to disconnect. The third controllable switch is configured such that when its third switch control terminal is low, it controls the fifth switch terminal and the sixth switch terminal to conduct; when its third switch control terminal is high, it controls the fifth switch terminal and the sixth switch terminal to disconnect.

[0021] Furthermore, the self-locking module also includes a fifth resistor and a sixth resistor. The fifth resistor is connected in series between the third switch terminal of the second controllable switch and the third switch control terminal of the third controllable switch, and the sixth resistor is connected in series between the self-locking signal output terminal of the control module and the second switch control terminal of the second controllable switch.

[0022] Furthermore, the self-locking module also includes a third capacitor, one end of which is connected to the third switch terminal of the second controllable switch, and the other end of which is connected to the fourth switch terminal of the second controllable switch.

[0023] Furthermore, the self-locking module also includes a fourteenth resistor, which is connected in series between the first self-locking switch terminal and the first power supply positive terminal of the power supply module.

[0024] Furthermore, the second controllable switch is configured as a second transistor, and the second transistor is an NPN type transistor. The collector (C) of the second transistor is formed as the third switch terminal, the emitter (E) of the second transistor is formed as the fourth switch terminal, and the base (B) of the second transistor is formed as the second switch control terminal. The third controllable switch is configured as a third transistor, and the third transistor is a PNP type transistor. The emitter (E) of the third transistor is formed as the fifth switch terminal, the collector (C) of the third transistor is formed as the sixth switch terminal, and the base (B) of the third transistor is formed as the third switch control terminal.

[0025] Furthermore, the power supply module includes a power supply unit for providing electrical energy and a power supply control unit connected to the power supply unit. The power supply control unit has the power supply control terminal and is configured to: respond to a power supply control signal received by the power supply control terminal to selectively allow or block the external output of electrical energy from the power supply unit depending on whether it receives the power supply control signal.

[0026] Furthermore, the power supply unit has a positive power supply terminal and a negative power supply terminal, and the power supply control unit has a positive connection terminal, a negative connection terminal, a first power supply positive terminal, and the power supply negative terminal. The power supply positive terminal of the power supply unit is connected to the positive connection terminal of the power supply control unit, and the power supply negative terminal of the power supply unit is connected to the negative connection terminal of the power supply control unit. The positive connection terminal of the power supply control unit is connected to the first power supply positive terminal. The power supply control unit is configured to selectively turn on or off the connection between the negative connection terminal and the power supply negative terminal depending on whether it receives a power supply control signal.

[0027] Furthermore, the power supply control unit is configured with a Bosch lithium battery protection board, model UBPE2-18V.

[0028] Furthermore, the control module has a drive signal output terminal, which is connected to the drive module to control the voltage output by the drive module.

[0029] Furthermore, the driving module has a driving output terminal and a feedback terminal, and the driving module is configured to control the voltage output of its driving output terminal according to the voltage received at its feedback terminal; The drive signal output terminal of the control module outputs a PWM adjustment signal, and the drive signal output terminal of the control module is connected to the feedback terminal through an adjustment unit. The adjustment unit is configured to convert the PWM adjustment signal into a DC voltage adjustment signal of the corresponding voltage according to the duty cycle and output it.

[0030] Furthermore, the lighting drive circuit also includes a feedback unit, which is connected in series in the circuit where the lighting module is located, and the feedback unit is configured to: convert the current flowing through it into a corresponding feedback voltage signal and output it; and the feedback voltage signal output by the feedback unit is superimposed with the DC voltage regulation signal output by the regulation unit and fed back to the feedback terminal of the drive module.

[0031] Furthermore, the feedback unit adopts a feedback resistor unit, and the feedback resistor unit can be a single resistor, or multiple resistors connected in parallel or series.

[0032] Furthermore, the driving module includes a boost unit, an energy storage inductor, and a fifth diode. The first end of the energy storage inductor is connected to the positive terminal of the first power supply of the power supply module, the second end of the energy storage inductor is connected to the anode of the fifth diode, the cathode of the fifth diode is connected to the driving output terminal, and the boost unit has the feedback terminal. The boost unit is configured to control whether the second terminal of the energy storage inductor is connected to the reference ground in a pulse width modulation manner, and to control the charging and discharging process of the energy storage inductor by adjusting the duty cycle during pulse width modulation through the signal received by its feedback terminal.

[0033] Furthermore, the power supply terminal of the boost unit is connected to the second power supply positive terminal of the power supply module, and the ground terminal of the boost unit is connected to the reference ground.

[0034] Furthermore, the boost unit has a first boost switch terminal and a second boost switch terminal; The first boost switch terminal is connected to the second terminal of the energy storage inductor, and the second boost switch terminal is connected to reference ground. Furthermore, the boost unit is configured to control the switching between the first boost switch terminal and the second boost switch terminal in a pulse width modulation manner.

[0035] Furthermore, the driving module includes a current-limiting resistor unit, the boost unit has a current-limiting setting terminal, one end of the current-limiting resistor unit is connected to a reference ground, and the other end is connected to the current-limiting setting terminal; and the driving module is configured to control and adjust the duty cycle of pulse width modulation according to the voltage magnitude on its current-limiting setting terminal, so as to limit the output power of the driving module; the current-limiting resistor unit can be a single resistor, or multiple resistors connected in parallel or in series.

[0036] Furthermore, the boost unit has a boost unit enable terminal, which is connected to the self-locking control terminal. The boost unit is configured such that: when the self-locking control signal received by the enable terminal enables the self-locking module to connect the power supply control signal and the power supply control terminal, the boost unit is in an operating state; when the self-locking control signal received by the enable terminal enables the self-locking module to disconnect the power supply control signal and the power supply control terminal, the boost unit is in a standby state.

[0037] Furthermore, the boost unit employs a boost-type constant current driver, which uses an SL8530B chip. Pin 1 of the SL8530B chip is configured as its ground terminal, pin 2 of the SL8530B chip is configured as the enable terminal of the boost unit, pin 4 of the SL8530B chip is configured as the feedback terminal, pin 5 of the SL8530B chip is configured as the first boost switch terminal, pin 6 of the SL8530B chip is configured as the second boost switch terminal and the current limiting setting terminal, and pin 8 of the SL8530B chip is configured as its power supply terminal.

[0038] Furthermore, the adjustment unit includes a seventeenth resistor and an eleventh capacitor. One end of the seventeenth resistor is connected to the drive signal output terminal of the control module, and the other end is connected to one end of the eleventh capacitor. The other end of the eleventh capacitor is connected to a reference ground. The connection point between the seventeenth resistor and the eleventh capacitor is connected to the feedback terminal.

[0039] Furthermore, the output terminal of the adjustment unit is connected in series with an eighteenth resistor before being output to the outside.

[0040] Furthermore, the driving module has an internal reference voltage, and the driving module is configured to: decrease the voltage output of its driving output terminal when the voltage signal received by the feedback terminal is higher than its internal reference voltage, and increase the voltage output of its driving output terminal when the voltage signal received by the feedback terminal is lower than its internal reference voltage.

[0041] Furthermore, the drive module includes a protection unit connected to the drive output terminal and the feedback terminal, and the protection unit is configured to: compare the voltage output by the drive output terminal with its internal voltage threshold, and pull the voltage of the feedback terminal to be greater than the internal reference voltage of the drive module when the voltage output by the drive output terminal is greater than its internal voltage threshold.

[0042] Furthermore, the protection unit includes a second Zener diode, the anode of which is connected to the feedback terminal, and the cathode of which is connected to the drive output terminal.

[0043] Furthermore, the lighting driving circuit includes a power supply detection network, and the voltage output from the first power positive terminal of the power supply module is input to the control module through the power supply detection network.

[0044] Furthermore, the power supply detection network includes a nineteenth resistor and a twentieth resistor. One end of the nineteenth resistor is connected to the first positive power supply terminal of the power supply module, and the other end of the nineteenth resistor is connected to one end of the twentieth resistor. The other end of the twentieth resistor is connected to the reference ground. The connection between the nineteenth resistor and the twentieth resistor is located in the control module connection.

[0045] A lighting fixture includes the above-described lighting drive circuit and a lighting module for emitting light, wherein the lighting drive circuit is connected to the lighting module to drive the lighting module.

[0046] Compared with the prior art, the present invention has the following beneficial effects: (1) The lighting drive circuit and lighting fixture of this utility model can achieve self-locking after the control module obtains power to ensure the continuous power supply of the power supply module by setting a self-locking module. It has a simple structure, is easy to operate, can achieve one-button start and self-locking, and has standby power consumption as low as zero power consumption or near zero power consumption.

[0047] (2) The lighting drive circuit and lighting fixture of this utility model are reasonably designed. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the lighting drive circuit (excluding the control module) of this utility model; Figure 2 This is a schematic diagram of the operation module and self-locking module in the lighting drive circuit of this utility model; Figure 3 This is a schematic diagram of the control module, adjustment unit, and power supply detection network in the lighting drive circuit of this utility model; The component names corresponding to the various reference numerals in the figure are as follows: 1. Power supply module; 101. Power supply control terminal; 102. First power supply positive terminal; 103. Second power supply positive terminal; 104. Power supply negative terminal; 105. Voltage regulation module; 106. Power supply unit; 1061. Power supply positive terminal; 1062. Power supply negative terminal; 107. Power supply control unit; 1071. Positive terminal connection; 1072. Negative terminal connection; 1073. First power supply positive terminal; 1074. Power supply negative terminal; 2. Drive module; 201. Drive output terminal; 3. Operation module; 301. Switch signal output unit; 3011. Switch signal output terminal; 3012. First controllable switch; 3012-1. 1. Switch terminal; 3012-2. Second switch terminal; 3012-3. First switch control terminal; 4. Self-locking module; 401. Self-locking control terminal; 402. First self-locking switch terminal; 403. Second self-locking switch terminal; 404. Second controllable switch; 4041. Third switch terminal; 4042. Fourth switch terminal; 4043. Second switch control terminal; 405. Third controllable switch; 4051. Fifth switch terminal; 4052. Sixth switch terminal; 4053. Third switch control terminal; 5. Adjustment unit; 6. Feedback unit; 601. Feedback resistor unit; 7. Current limiting resistor unit; 8. Protection unit; 9. Power supply detection network; U1. Boost unit; FB. Feedback terminal DRV, First boost switch terminal; SE, Second boost switch terminal; CS, Current limiting setting terminal; EN, Boost unit enable terminal; U2, Control module; U2-1, Self-locking signal output terminal; U2-2, Drive signal output terminal; L1, Energy storage inductor; L1-1, First terminal; L1-2, Second terminal; SW1, Operating switch; SW1-1, First operating switch terminal; SW1-2, Second operating switch terminal; R1, First resistor; R2, Second resistor; R3, Third resistor; R4, Fourth resistor; R5, Fifth resistor; R6, Sixth resistor; R7, Seventh resistor; R14, Fourteenth resistor; R16, Sixteenth resistor; R17, Seventeenth resistor; R1 8. Eighteenth resistor; R19. Nineteenth resistor; R20. Twentieth resistor; RS1. First current-limiting resistor; RS2. Second current-limiting resistor; RS3. Third current-limiting resistor; RS4. Fourth current-limiting resistor; RS5. First feedback resistor; RS6. Second feedback resistor; C2. Second capacitor; C3. Third capacitor; C11. Eleventh capacitor; Q1. First transistor; Q2. Second transistor; Q3. Third transistor; D1. First diode; D2. Second diode; D3. Third diode; D4. Fourth diode; D5. Fifth diode; ZD1. First Zener diode; ZD2. Second Zener diode; GND. Reference ground; LED1. Lighting module. Detailed Implementation

[0050] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0051] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0053] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0057] See Figures 1 to 3 This utility model provides a lighting driving circuit for driving a lighting module LED1, comprising: The power supply module 1 has a power supply control terminal 101 for receiving power supply control signals, and the power supply module 1 is configured to: in response to the power supply control signal received by the power supply control terminal 101, selectively allow or stop the external output of electrical energy according to whether it receives the power supply control signal; Drive module 2, which is connected to power supply module 1 to obtain electrical energy and output it to drive lighting module LED1; Operation module 3 includes an operation switch SW1 for receiving physical operations from the user. The operation switch SW1 is connected in series between the power supply control signal and the power supply control terminal 101 to switch the connection between the two. The operation module 3 outputs a corresponding switch signal according to the state of the operation switch SW1. The self-locking module 4 has a self-locking control terminal 401 for receiving a self-locking control signal, and the self-locking module 4 is connected in series between the power supply control signal and the power supply control terminal 101. The self-locking module 4 is configured to: respond to the self-locking control signal received by the self-locking control terminal 401, selectively turn on or off the connection between the power supply control signal and the power supply control terminal 101 according to the state of the self-locking control signal. The control module U2 is connected to the power supply module 1 to obtain electrical energy. The control module U2 is connected to the self-locking control terminal 401 of the operation module 3 and the self-locking module 4 respectively. The control module U2 is configured to control the state of the self-locking control signal it outputs to the self-locking control terminal 401 according to the switch signal it receives.

[0058] Using the above technical solution, the user can operate the operation switch SW1 to close it. At this time, the power supply control signal is connected to the power supply control terminal 101 through the operation switch SW1. The power supply control terminal 101 receives the power supply control signal, and the power supply module 1 outputs power. After the control module U2 obtains the power, it works. The control module U2 receives the switch signal from the operation module 3. If the switch signal at this time is a power-on command, the control module U2 sends a self-locking control signal to the self-locking module 4 to put the self-locking module 4 in a self-locking state. That is, the power supply control signal is connected to the power supply control terminal 101 through the self-locking module 4, thereby ensuring that the power supply control signal and the power supply control terminal 101 can be continuously connected. Even if the operation switch SW1 is disconnected, the lighting drive circuit can continue to work to drive the lighting module LED1. When the control module U2 receives a power-off command, the control module U2 sends a self-locking control signal to the self-locking module 4 to release the self-locking state of the self-locking module 4. That is, the power supply control signal cannot be connected to the self-locking module 4 by the power supply control terminal 101, so the power supply control terminal 101 does not receive the power supply control signal. The power supply module 1 stops outputting power. Therefore, the drive module 2, control module U2, etc. do not consume any power, which is equivalent to zero power consumption standby. In the above technical solution, due to the setting of the self-locking module 4, it can achieve self-locking after the control module U2 obtains power to ensure the continuous power supply of the power supply module 1, so that the operation switch SW1 does not need to be kept in the on state, thereby releasing it so that the user can perform other operations on the operation switch SW1; the operation module 3 can output different switch signals according to the operation switch SW1, and different forms of switch signals can represent different instructions. For example, a short press of the operation switch SW1 can represent a power-on instruction, a long press of the operation switch SW1 for a predetermined time can represent a power-off instruction, and so on; the above technical solution has a simple structure, is easy to operate, can achieve one-button start and self-locking, and has standby power consumption as low as zero or near zero power consumption.

[0059] Furthermore, the power supply module 1 has a first positive power supply 1073, a second positive power supply 103, and a negative power supply 104, and the voltage value output by the second positive power supply 103 meets the operating voltage of the chip in the circuit, and the negative power supply 104 is connected to the reference ground GND. The driving module 2 is connected to the positive terminal 1073 of the first power supply to modulate the voltage output by the positive terminal 1073 of the first power supply. The power supply terminal of the control module U2 is connected to the positive terminal 103 of the second power supply, and its ground terminal is connected to the reference ground GND to obtain working power.

[0060] By adopting the above technical solution, the power supply module 1 is made more reasonable, and it can output different voltages for practical use. Generally, the voltage output by the first power supply positive terminal 1073 is greater than the voltage output by the second power supply positive terminal 103.

[0061] Furthermore, the power supply module 1 includes a voltage regulating module 105, which is configured to connect to the first power supply positive terminal 1073 and convert the voltage value output by the first power supply positive terminal 1073 into the voltage value output by the second power supply positive terminal 103 and output it.

[0062] By adopting the above technical solution, the power supply module 1 is made more reasonable, and the voltage regulation module 105 can realize the output of two voltages, and the structure is simple.

[0063] Furthermore, the voltage regulating module 105 includes a sixteenth resistor R16 and a first Zener diode ZD1. One end of the sixteenth resistor R16 is connected to the positive terminal 1073 of the first power supply, and the other end is connected to the cathode of the first Zener diode ZD1. The anode of the first Zener diode ZD1 is connected to the reference ground GND.

[0064] By adopting the above technical solution, the voltage regulation module 105 becomes more reasonable; the setting of the second Zener diode ZD2 can clamp the output voltage, making the voltage output more stable and reliable, thereby ensuring the stable operation of each chip in the circuit.

[0065] Furthermore, the voltage regulating module 105 also includes a fourth diode D4 connected in series between the sixteenth resistor R16 and the first power supply positive terminal 1073. The anode of the fourth diode D4 is connected to the first power supply positive terminal 1073, and the cathode of the fourth diode D4 is connected to the sixteenth resistor R16.

[0066] By adopting the above technical solution, the voltage regulation module 105 becomes more reasonable, and the fourth diode D4 can effectively prevent backflow, thereby ensuring the safety and reliability of the circuit.

[0067] Furthermore, the power supply control signal is the output voltage of the first power supply positive terminal 1073 of the power supply module 1; The first operating switch terminal SW1-1 of the operating switch SW1 is connected to the first positive power supply terminal 1073 of the power supply module 1, and the second operating switch terminal SW1-2 of the operating switch SW1 is connected to the power supply control terminal 101 of the power supply module 1.

[0068] By adopting the above technical solution, the power supply control signal and the power module are more reasonable. When the operation switch SW1 is in the on state, the first power positive terminal 1073 of the power supply module 1 and the power supply control terminal 101 of the power supply module 1 can be connected through the operation switch SW1. When the operation switch SW1 is in the off state, the first power positive terminal 1073 of the power supply module 1 and the power supply control terminal 101 of the power supply module 1 cannot be connected through the operation switch SW1.

[0069] Furthermore, a first diode D1 is connected in series between the second operating switch terminal SW1-2 of the operating switch SW1 and the power supply control terminal 101 of the power supply module 1, and the anode of the first diode D1 is connected to the second operating switch terminal SW1-2 of the operating switch SW1, and the cathode of the first diode D1 is connected to the power supply control terminal 101 of the power supply module 1.

[0070] The above technical solution makes the lighting drive circuit more reasonable; the setting of the first diode D1 can limit the current flow, avoid backflow, and ensure the stable, reliable and safe operation of the circuit.

[0071] Furthermore, the operation module 3 includes a switch signal output unit 301 with a switch signal output terminal 3011. The switch signal output unit 301 is connected to the operation switch SW1 and outputs a corresponding switch signal to the outside through the switch signal output terminal 3011 according to the state of the operation switch SW1.

[0072] By adopting the above technical solution, the operation module 3 becomes more reasonable; the status of the operation switch SW1 is transmitted to the control module U2 through the switch signal output unit 301.

[0073] Furthermore, the switch signal output unit 301 is configured such that: when the operation switch SW1 is on, the switch signal output terminal 3011 outputs a low-level switch signal; and when the operation switch SW1 is off, the switch signal output terminal 3011 outputs a high-level switch signal.

[0074] The above technical solution makes the operation module 3 more reasonable.

[0075] Further, the switch signal output unit 301 includes a first resistor R1, a second resistor R2, a third resistor R3, and a first controllable switch 3012. The second operating switch terminal SW1-2 of the operating switch SW1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the reference ground GND. The first switch control terminal 3012-3 of the first controllable switch 3012 is connected to the connection point of the first resistor R1 and the second resistor R2. The first switch terminal 3012-1 of the first controllable switch 3012 is connected to one end of the third resistor R3. The second switch terminal 3012-2 of switch 3012 is connected to the reference ground GND, and the other end of the third resistor R3 is connected to the positive terminal 103 of the second power supply. The connection between the third resistor R3 and the first switch terminal 3012-1 of the first controllable switch 3012 forms the switch signal output terminal 3011. The first controllable switch 3012 is configured such that when its first switch control terminal 3012-3 is at a high level, it controls the first switch terminal 3012-1 and the second switch terminal 3012-2 to be turned on, and when its first switch control terminal 3012-3 is at a low level, it controls the first switch terminal 3012-1 and the second switch terminal 3012-2 to be turned off.

[0076] Using the above technical solution, when the operation switch SW1 is open, the first switch control terminal 3012-3 of the first controllable switch 3012 is at a low level through the second resistor R2. Therefore, the first switch terminal 3012-1 and the second switch terminal 3012-2 of the first controllable switch 3012 are open, and the switch signal output terminal 3011 is at a high level through the third resistor R3. That is, the switch signal output terminal 3011 outputs a high level. Since the switch signal output terminal 3011 is connected to the second power supply positive terminal 103 through the third resistor R3, the high level output by the switch signal output terminal 3011 meets the input requirements of the control module U2. When the operating switch SW1 is turned on, the first switch control terminal 3012-3 of the first controllable switch 3012 is at a high level through the first resistor R1. Therefore, the first switch terminal 3012-1 and the second switch terminal 3012-2 of the first controllable switch 3012 are connected, and the switch signal output terminal 3011 is at a low level through the first controllable switch 3012.

[0077] Furthermore, the first controllable switch 3012 is configured as a first transistor Q1, and the first transistor Q1 is an NPN transistor. The collector (C) of the first transistor Q1 is formed as the first switch terminal 3012-1, the emitter (E) of the first transistor Q1 is formed as the second switch terminal 3012-2, and the base (B) of the first transistor Q1 is formed as the first switch control terminal 3012-3.

[0078] The above technical solution makes the first controllable switch 3012 more reasonable.

[0079] Furthermore, the switch signal output unit 301 also includes a second diode D2 connected in series between the operation switch SW1 and the first resistor R1. The anode of the second diode D2 is connected to the second operation switch terminal SW1-2 of the operation switch SW1, and the cathode of the second diode D2 is connected to the second resistor R2.

[0080] The above technical solution makes the switch signal output unit 301 more reasonable.

[0081] Furthermore, the switch signal output unit 301 also includes a second capacitor C2, one end of which is connected to the switch signal output terminal 3011, and the other end of which is connected to the reference ground GND.

[0082] By adopting the above technical solution, the switch signal output unit 301 becomes more reasonable, and the second capacitor C2 can filter the output and reduce noise.

[0083] Furthermore, the power supply control signal is the output voltage of the first power supply positive terminal 1073 of the power supply module 1; The self-locking module 4 has a first self-locking switch terminal 402 and a second self-locking switch terminal 403. The first self-locking switch terminal 402 is connected to the first power positive terminal 1073 of the power supply module 1, and the second self-locking switch terminal 403 is connected to the power supply control terminal 101 of the power supply module 1. The self-locking module 4 is configured to control the on / off state between the first self-locking switch terminal 402 and the second self-locking switch terminal 403 according to the state of the self-locking control signal.

[0084] By adopting the above technical solution, the self-locking module 4 becomes more reasonable. When the self-locking module 4 controls the first self-locking switch terminal 402 and the second self-locking switch terminal 403 to be connected, the first power positive terminal 1073 of the power supply module 1 and the power supply control terminal 101 of the power supply module 1 can be connected through the self-locking module 4. When the self-locking module 4 controls the first self-locking switch terminal 402 and the second self-locking switch terminal 403 to be disconnected, the first power positive terminal 1073 of the power supply module 1 and the power supply control terminal 101 of the power supply module 1 cannot be connected through the self-locking module 4.

[0085] Furthermore, a third diode D3 is connected in series between the second self-locking switch terminal 403 of the self-locking module 4 and the power supply control terminal 101 of the power supply module 1, and the anode of the third diode D3 is connected to the second self-locking switch terminal 403 of the self-locking module 4, and the cathode of the third diode D3 is connected to the power supply control terminal 101 of the power supply module 1.

[0086] By adopting the above technical solution, the self-locking module 4 becomes more reasonable; the setting of the third diode D3 can limit the current flow direction, avoid backflow, and ensure the stable, reliable and safe operation of the circuit.

[0087] Further, the self-locking module 4 includes a second controllable switch 404 and a third controllable switch 405. The second switch control terminal 4043 of the second controllable switch 404 is formed as the self-locking control terminal 401, the fifth switch terminal 4051 of the third controllable switch 405 is formed as the first self-locking switch terminal 402, and the sixth switch terminal 4052 of the third controllable switch 405 is formed as the second self-locking switch terminal 403. The control module U2 has a self-locking signal output terminal U2-1 for outputting a self-locking control signal, and the self-locking signal output terminal U2-1 of the control module U2 is connected to the... The second controllable switch 404 is connected to the second switch control terminal 4043 and controls the state of the self-locking control signal output by its self-locking signal output terminal U2-1 according to the switch signal it receives. The second controllable switch 404 is configured to control its on / off state according to the state of the self-locking control signal received by its second switch control terminal 4043. The third controllable switch 405 is configured to be on when the second controllable switch 404 is on and off when the second controllable switch 404 is off.

[0088] By adopting the above technical solution, the self-locking module 4 becomes more reasonable. Since the driving capability of the control module U2 is limited, the driving capability of the control module U2 can be greatly improved by setting the first controllable switch 3012 and the second controllable switch 404.

[0089] Further, the self-locking module 4 includes a fourth resistor R4 and a seventh resistor R7. The second switch control terminal 4043 of the second controllable switch 404 is connected to one end of the seventh resistor R7 and the other end is connected to the reference ground GND. The second controllable switch 404 has a third switch terminal 4041 and a fourth switch terminal 4042. The third switch terminal 4041 of the second controllable switch 404 is connected to the third switch control terminal 4053 of the third controllable switch 405. The fourth switch terminal 4042 of the second controllable switch 404 is connected to the reference ground GND. The third switch control terminal 4053 of the third controllable switch 405 is connected to the first... The positive terminal of the power supply 1073 is connected; the second controllable switch 404 is configured such that when its second switch control terminal 4043 is at a high level, it controls the third switch terminal 4041 and the fourth switch terminal 4042 to be turned on, and when its second switch control terminal 4043 is at a low level, it controls the third switch terminal 4041 and the fourth switch terminal 4042 to be turned off; the third controllable switch 405 is configured such that when its third switch control terminal 4053 is at a low level, it controls the fifth switch terminal 4051 and the sixth switch terminal 4052 to be turned on, and when its third switch control terminal 4053 is at a high level, it controls the fifth switch terminal 4051 and the sixth switch terminal 4052 to be turned off.

[0090] By adopting the above technical solution, the self-locking module 4 becomes more reasonable; when the self-locking signal output terminal U2-1 of the control module U2 outputs a low level, the second switch control terminal 4043 of the second controllable switch 404 is at a low level, the third switch terminal 4041 and the fourth switch terminal 4042 of the second controllable switch 404 are disconnected, the third switch terminal 4041 of the third controllable switch 405 is at a high level, and the fifth switch terminal 4051 and the sixth switch terminal 4052 of the third controllable switch 405 are disconnected, that is, the first self-locking switch terminal 402 and the... The second self-locking switch terminal 403 is open; when the self-locking signal output terminal U2-1 of the control module U2 outputs a high level, the second switch control terminal 4043 of the second controllable switch 404 is at a high level, the third switch terminal 4041 and the fourth switch terminal 4042 of the second controllable switch 404 are connected, the third switch terminal 4041 of the third controllable switch 405 is at a low level, and the fifth switch terminal 4051 and the sixth switch terminal 4052 of the third controllable switch 405 are connected, that is, the first self-locking switch terminal 402 and the second self-locking switch terminal 403 are connected.

[0091] Furthermore, the self-locking module 4 also includes a fifth resistor R5 and a sixth resistor R6. The fifth resistor R5 is connected in series between the third switch terminal 4041 of the second controllable switch 404 and the third switch control terminal 4053 of the third controllable switch 405. The sixth resistor R6 is connected in series between the self-locking signal output terminal U2-1 of the control module U2 and the second switch control terminal 4043 of the second controllable switch 404.

[0092] The above technical solution makes the self-locking module 4 more reasonable.

[0093] Furthermore, the self-locking module 4 also includes a third capacitor C3, one end of which is connected to the third switch terminal 4041 of the second controllable switch 404, and the other end is connected to the fourth switch terminal 4042 of the second controllable switch 404.

[0094] The above technical solution makes the self-locking module 4 more reasonable.

[0095] Furthermore, the self-locking module 4 also includes a fourteenth resistor R14, which is connected in series between the first self-locking switch terminal 402 and the first power supply positive terminal 1073 of the power supply module 1.

[0096] The above technical solution makes the self-locking module 4 more reasonable.

[0097] Furthermore, the second controllable switch 404 is configured as a second transistor Q2, and the second transistor Q2 is an NPN transistor. The collector of the second transistor Q2 is formed as the third switch terminal 4041, the emitter of the second transistor Q2 is formed as the fourth switch terminal 4042, and the base of the second transistor Q2 is formed as the second switch control terminal 4043. The third controllable switch 405 is configured as a third transistor Q3, and the third transistor Q3 is a PNP type transistor. The emitter (E) of the third transistor Q3 is formed as the fifth switch terminal 4051, the collector (C) of the third transistor Q3 is formed as the sixth switch terminal 4052, and the base (B) of the third transistor Q3 is formed as the third switch control terminal 4053.

[0098] The above technical solution makes the self-locking module 4 more reasonable.

[0099] Furthermore, the power supply module 1 includes a power supply unit 106 for providing electrical energy and a power supply control unit 107 connected to the power supply unit 106. The power supply control unit 107 has the power supply control terminal 101 and is configured to: in response to a power supply control signal received by the power supply control terminal 101, selectively allow or block the external output of electrical energy from the power supply unit 106 depending on whether it receives the power supply control signal.

[0100] The above technical solution makes the power supply module 1 more reasonable.

[0101] Furthermore, the power supply unit 106 has a positive power supply terminal 1061 and a negative power supply terminal 1062, and the power supply control unit 107 has a positive connection terminal 1071, a negative connection terminal 1072, a first power supply positive terminal 1073, and a power supply negative terminal 104. The positive power supply terminal 1061 of the power supply unit 106 is connected to the positive connection terminal 1071 of the power supply control unit 107, and the negative power supply terminal 1062 of the power supply unit 106 is connected to the negative connection terminal 1072 of the power supply control unit 107. The positive connection terminal 1071 of the power supply control unit 107 is connected to the first power supply positive terminal 1073. The power supply control unit 107 is configured to selectively turn on or off the connection between the negative connection terminal 1072 and the power supply negative terminal 104 depending on whether it receives a power supply control signal.

[0102] By adopting the above technical solution, the power supply module 1 becomes more reasonable; when the negative terminal 1072 is disconnected from the negative terminal 104 of the power supply, a circuit cannot be established, so it cannot output electrical energy; when the negative terminal 1072 is connected to the negative terminal 104 of the power supply, a circuit can be established, so it can achieve external output; specifically, the power supply unit 106 is a battery or a battery socket that can be installed and connected to a battery.

[0103] Furthermore, the power supply control unit 107 is configured as a Bosch lithium battery protection board, model UBPE2-18V.

[0104] The above technical solution makes the power supply control unit 107 more reasonable.

[0105] Furthermore, the control module U2 has a drive signal output terminal U2-2, which is connected to the drive module 2 to control the voltage output by the drive module 2.

[0106] By adopting the above technical solution, the lighting driving circuit becomes more reasonable; the control module U2 can control the voltage output of the driving module 2, thereby realizing the brightness adjustment of the lighting module LED1, so as to improve the actual user experience.

[0107] Furthermore, the driving module 2 has a driving output terminal 201 and a feedback terminal FB, and the driving module 2 is configured to control the voltage output of its driving output terminal 201 according to the voltage received by its feedback terminal FB. The drive signal output terminal U2-2 of the control module U2 outputs a PWM adjustment signal, and the drive signal output terminal U2-2 of the control module U2 is connected to the feedback terminal FB through the adjustment unit 5. The adjustment unit 5 is configured to convert the PWM adjustment signal into a DC voltage adjustment signal of the corresponding voltage according to the duty cycle and output it.

[0108] By adopting the above technical solution, the driving module 2 becomes more reasonable; the control module U2 controls and adjusts the duty cycle of the output PWM adjustment signal, and after conversion by the adjustment unit 5, outputs a corresponding DC voltage adjustment signal, thereby changing the voltage received by the feedback terminal FB and realizing the adjustment of the output voltage of the driving module 2.

[0109] Furthermore, the lighting driving circuit also includes a feedback unit 6, which is connected in series in the circuit where the lighting module LED1 is located. The feedback unit 6 is configured to convert the current flowing through it into a corresponding feedback voltage signal and output it. The feedback voltage signal output by the feedback unit 6 is superimposed with the DC voltage adjustment signal output by the adjustment unit 5 and then fed back to the feedback terminal FB of the driving module 2.

[0110] By adopting the above technical solution, the lighting drive circuit becomes more reasonable; When the duty cycle of the PWM adjustment signal output by the control module U2 increases, the DC voltage adjustment signal converted by the adjustment unit 5 increases accordingly, that is, the voltage at the feedback terminal FB of the drive module 2 increases. At this time, the voltage output by the drive module 2 will decrease, the brightness of the lighting module LED1 will decrease, and the current flowing through the lighting module LED1 and the feedback unit 6 will decrease. The voltage fed back to the feedback terminal FB by the feedback unit 6 will decrease until the feedback voltage signal output by the feedback unit 6 and the DC voltage adjustment signal output by the adjustment unit 5 are superimposed and the signal returns to the stable point. Thus, the voltage fed back to the feedback terminal FB of the drive module 2 returns to the stable point, and the voltage output by the drive module 2 stabilizes again, completing the dimming. When the duty cycle of the PWM adjustment signal output by the control module U2 decreases, the DC voltage adjustment signal converted by the adjustment unit 5 decreases accordingly, that is, the voltage at the feedback terminal FB of the drive module 2 decreases. At this time, the voltage output by the drive module 2 will increase, and the brightness of the lighting module LED1 will increase. Therefore, the current flowing through the lighting module LED1 and the feedback unit 6 increases, and the voltage fed back to the feedback terminal FB by the feedback unit 6 increases until the feedback voltage signal output by the feedback unit 6 and the DC voltage adjustment signal output by the adjustment unit 5 are superimposed and the signal returns to the stable point. Thus, the voltage fed back to the feedback terminal FB of the drive module 2 returns to the stable point, and the voltage output by the drive module 2 stabilizes again, completing the dimming. Furthermore, the above technical solutions have many general-purpose chips or components on the market that can meet the requirements of the drive module 2, which can effectively reduce risks and reduce costs.

[0111] Furthermore, the feedback unit 6 adopts a feedback resistor unit 601, and the feedback resistor unit 601 can be a single resistor, or multiple resistors connected in parallel or series.

[0112] By adopting the above technical solution, the feedback unit 6 is made more reasonable; specifically, the feedback resistor unit 601 includes a first feedback resistor RS5 and a second feedback resistor RS6, and the first feedback resistor RS5 and the second feedback resistor RS6 are connected in parallel.

[0113] Furthermore, the drive module 2 includes a boost unit U1, an energy storage inductor L1, and a fifth diode D5. The first terminal L1-1 of the energy storage inductor L1 is connected to the first power supply positive terminal 1073 of the power supply module 1, the second terminal L1-2 of the energy storage inductor L1 is connected to the anode of the fifth diode D5, and the cathode of the fifth diode D5 is connected to the drive output terminal 201. The boost unit U1 has the feedback terminal FB. The boost unit U1 is configured to control whether the second terminal L1-2 of the energy storage inductor L1 is connected to the reference ground GND in a pulse width modulation manner, and to control the charging and discharging process of the energy storage inductor L1 by adjusting the duty cycle during pulse width modulation through the signal received by its feedback terminal FB.

[0114] By adopting the above technical solution, the driving module 2 becomes more reasonable. When the boost unit U1 controls the second terminal L1-2 of the energy storage inductor L1 to connect to the reference ground GND, the energy storage inductor L1 stores energy. When the boost unit U1 controls the second terminal L1-2 of the energy storage inductor L1 to disconnect from the reference ground GND, the energy storage inductor L1 releases electrical energy to the outside through the first diode D1. At this time, the voltage output by the driving module 2 is the electrical voltage output by the first power supply positive terminal 1073 of the power supply module 1 plus the induced electromotive force of the energy storage inductor L1, thereby realizing the boost operation. Since the boost unit U1 controls whether the second terminal L1-2 of the energy storage inductor L1 is connected to the reference ground GND by pulse width modulation, it can control the charging and discharging process of the energy storage inductor L1 by changing the duty cycle, thereby realizing the voltage output by the drive module 2.

[0115] Furthermore, the power supply terminal of the boost unit U1 is connected to the second power supply positive terminal 103 of the power supply module 1, and the ground terminal of the boost unit U1 is connected to the reference ground GND.

[0116] By adopting the above technical solution, the boost unit U1 becomes more reasonable.

[0117] Furthermore, the boost unit U1 has a first boost switch terminal DRV and a second boost switch terminal SE; The first boost switch terminal DRV is connected to the second terminal L1-2 of the energy storage inductor L1, and the second boost switch terminal SE is connected to the reference ground GND. Furthermore, the boost unit U1 is configured to control the switching between the first boost switch terminal DRV and the second boost switch terminal SE in a pulse width modulation manner.

[0118] By adopting the above technical solution, the boost unit U1 is made more reasonable. When the boost unit U1 controls the first boost switch terminal DRV and the second boost switch terminal SE to be turned on, the second terminal L1-2 of the energy storage switch is connected to the reference ground GND. When the boost unit U1 controls the second boost switch terminal SE to be turned off, the second terminal L1-2 of the energy storage switch is disconnected from the reference ground GND.

[0119] Furthermore, the driving module 2 includes a current-limiting resistor unit 7, and the boost unit U1 has a current-limiting setting terminal CS. One end of the current-limiting resistor unit 7 is connected to the reference ground GND, and the other end is connected to the current-limiting setting terminal CS. The driving module 2 is configured to control and adjust the duty cycle during pulse width modulation according to the voltage magnitude on its current-limiting setting terminal CS, so as to limit the output power of the driving module 2. The current-limiting resistor unit 7 can be a single resistor, or multiple resistors connected in parallel or in series.

[0120] By adopting the above technical solution, the driving module 2 becomes more reasonable. The current limiting resistor unit 7, together with the current limiting setting terminal CS, can limit the output power of the driving module 2, thereby limiting the input current of the driving module 2, realizing overcurrent protection, and ensuring the safe operating current of the internal components of the device. Specifically, the current-limiting resistor unit 7 includes a first current-limiting resistor RS1, a second current-limiting resistor RS2, a third current-limiting resistor RS3, and a fourth current-limiting resistor RS4, and the first current-limiting resistor RS1, the second current-limiting resistor RS2, the third current-limiting resistor RS3, and the fourth current-limiting resistor RS4 are connected in parallel.

[0121] Furthermore, the boost unit U1 has a boost unit enable terminal EN, which is connected to the self-locking control terminal 401. The boost unit U1 is configured such that: when the self-locking control signal received by the enable terminal enables the self-locking module 4 to conduct the power supply control signal and the power supply control terminal 101, the boost unit U1 is in a working state; when the self-locking control signal received by the enable terminal enables the self-locking module 4 to disconnect the power supply control signal and the power supply control terminal 101, the boost unit U1 is in a standby state.

[0122] By adopting the above technical solution, the boost unit U1 is made more reasonable, and when the control module U2 controls the self-locking module 4 to release the self-lock, the boost unit U1 can be put into standby state at the same time.

[0123] Furthermore, the boost unit U1 adopts a boost constant current driver, which uses an SL8530B chip. Pin 1 of the SL8530B chip is formed as its ground terminal, pin 2 of the SL8530B chip is formed as the boost unit enable terminal EN, pin 4 of the SL8530B chip is formed as the feedback terminal FB, pin 5 of the SL8530B chip is formed as the first boost switch terminal DRV, pin 6 of the SL8530B chip is formed as the second boost switch terminal SE and the current limiting setting terminal CS, and pin 8 of the SL8530B chip is formed as its power supply terminal.

[0124] By adopting the above technical solution, the boost unit U1 becomes more reasonable.

[0125] Furthermore, the adjustment unit 5 includes a seventeenth resistor R17 and an eleventh capacitor C11. One end of the seventeenth resistor R17 is connected to the drive signal output terminal U2-2 of the control module U2, and the other end is connected to one end of the eleventh capacitor C11. The other end of the eleventh capacitor C11 is connected to the reference ground GND. The connection point between the seventeenth resistor R17 and the eleventh capacitor C11 is connected to the feedback terminal FB.

[0126] By adopting the above technical solution, the adjustment unit 5 is made more reasonable. The RC network composed of the seventeenth resistor R17 and the eleventh capacitor C11 realizes the conversion of PWM adjustment signal; and the structure is simple and the cost is low.

[0127] Furthermore, the output terminal of the adjustment unit 5 is connected in series with the eighteenth resistor R18 before being output to the outside.

[0128] By adopting the above technical solution, the adjustment unit 5 becomes more reasonable.

[0129] Furthermore, the driving module 2 has an internal reference voltage, and the driving module 2 is configured to: reduce the voltage output of its driving output terminal 201 when the voltage signal received by the feedback terminal FB is higher than its internal reference voltage, and increase the voltage output of its driving output terminal 201 when the voltage signal received by the feedback terminal FB is lower than its internal reference voltage.

[0130] By adopting the above technical solution, the driving module 2 becomes more reasonable; Specifically, when the voltage supplied to the feedback terminal FB is equal to the internal reference voltage of the drive module 2, the output voltage of the drive module 2 is stable.

[0131] Furthermore, the drive module 2 includes a protection unit 8, which is connected to the drive output terminal 201 and the feedback terminal FB. The protection unit 8 is configured to compare the voltage output by the drive output terminal 201 with its internal voltage threshold, and pull the voltage of the feedback terminal FB to be greater than the internal reference voltage of the drive module 2 when the voltage output by the drive output terminal 201 is greater than its internal voltage threshold.

[0132] By adopting the above technical solution, the driving module 2 becomes more reasonable and effectively realizes overvoltage protection for the load, that is, overvoltage protection for the lighting module LED1. Specifically, when the voltage output by the drive output terminal 201 is less than the voltage threshold inside the protection unit 8, the protection unit 8 does not output to the feedback terminal FB. Therefore, the feedback terminal FB of the drive module 2 receives the signal sent by the feedback unit 6 and controls and adjusts the output voltage according to the signal sent by the feedback unit 6. When the voltage output by the drive output terminal 201 is greater than the voltage threshold inside the protection unit 8, the protection unit 8 outputs to the feedback terminal FB, and the voltage output is greater than the internal reference voltage of the drive module 2. At this time, since the voltage of the feedback terminal FB of the drive module 2 is greater than the internal reference voltage of the drive module 2, the drive module 2 will reduce the voltage output to achieve overvoltage protection for the load.

[0133] Furthermore, the protection unit 8 includes a second Zener diode ZD2, the anode of the second Zener diode ZD2 is connected to the feedback terminal FB, and the cathode of the second Zener diode ZD2 is connected to the drive output terminal 201.

[0134] Using the above technical solution, when the voltage output by the drive output terminal 201 is less than the voltage threshold inside the protection unit 8, that is, when the voltage output by the drive output terminal 201 is less than the breakdown voltage of the second Zener diode ZD2, the second Zener diode ZD2 is turned off, so that the voltage output by the drive output terminal 201 cannot be output to the feedback terminal FB through the second Zener diode ZD2, that is, the protection unit 8 does not output to the feedback terminal FB; When the voltage output by the drive output terminal 201 is greater than the voltage threshold inside the protection unit 8, that is, when the voltage output by the drive output terminal 201 is greater than the breakdown voltage of the second Zener diode ZD2, the second Zener diode ZD2 breaks down and conducts, so that the voltage output by the drive output terminal 201 is output to the feedback terminal FB through the second Zener diode ZD2. Generally, the voltage output by the drive output terminal 201 is greater than the internal reference voltage of the drive module 2, that is, the protection unit 8 pulls the voltage of the feedback terminal FB to be greater than the internal reference voltage of the drive module 2.

[0135] Furthermore, the lighting driving circuit includes a power supply detection network 9, and the voltage output from the first power supply positive terminal 1073 of the power supply module 1 is input to the control module U2 through the power supply detection network 9.

[0136] By adopting the above technical solution, the lighting drive circuit becomes more reasonable, and the control module U2 can detect the output of the first power positive terminal 1073 of the power supply module 1, thereby realizing overvoltage and undervoltage protection.

[0137] Furthermore, the power supply detection network 9 includes a nineteenth resistor R19 and a twentieth resistor R20. One end of the nineteenth resistor R19 is connected to the first power supply positive terminal 1073 of the power supply module 1, and the other end of the nineteenth resistor R19 is connected to one end of the twentieth resistor R20. The other end of the twentieth resistor R20 is connected to the reference ground GND. The connection between the nineteenth resistor R19 and the twentieth resistor R20 is located in the control module U2.

[0138] By adopting the above technical solution, the functional detection network becomes more reasonable.

[0139] See Figures 1 to 3 A lighting fixture includes the above-described lighting driving circuit and a lighting module LED1 for emitting light, wherein the lighting driving circuit is connected to the lighting module LED1 to drive the lighting module LED1.

[0140] The above technical solution makes the lighting fixture more reasonable.

[0141] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0142] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be defined by the scope of the claims.

Claims

1. A lighting driving circuit for driving a lighting module (LED1), characterized in that, include: The power supply module (1) has a power supply control terminal (101) for receiving power supply control signals, and the power supply module (1) is configured to: in response to the power supply control signal received by the power supply control terminal (101), selectively allow or stop the external output of electrical energy depending on whether it receives the power supply control signal; The driving module (2) is connected to the power supply module (1) to obtain electrical energy and output it to drive the lighting module (LED1). Operation module (3), the operation module (3) includes an operation switch (SW1) for receiving physical operations from the user, the operation switch (SW1) is connected in series between the power supply control signal and the power supply control terminal (101) for switching the connection between the two, and the operation module (3) outputs a corresponding switch signal to the outside according to the state of the operation switch (SW1); The self-locking module (4) has a self-locking control terminal (401) for receiving a self-locking control signal, and the self-locking module (4) is connected in series between the power supply control signal and the power supply control terminal (101). The self-locking module (4) is configured to: respond to the self-locking control signal received by the self-locking control terminal (401) to selectively turn on or off the connection between the power supply control signal and the power supply control terminal (101) according to the state of the self-locking control signal. The control module (U2) is connected to the power supply module (1) to obtain electrical energy. The control module (U2) is connected to the self-locking control terminal (401) of the operation module (3) and the self-locking module (4) respectively. The control module (U2) is configured to control the state of the self-locking control signal it outputs to the self-locking control terminal (401) according to the switch signal it receives.

2. The lighting driving circuit according to claim 1, characterized in that: The power supply module (1) has a first power positive terminal (1073), a second power positive terminal (103), and a power negative terminal (104), and the voltage value output by the second power positive terminal (103) meets the working voltage of the chip in the circuit, and the power negative terminal (104) is connected to the reference ground (GND). The drive module (2) is connected to the first power supply positive terminal (1073) to modulate the voltage output by the first power supply positive terminal (1073); The power supply terminal of the control module (U2) is connected to the positive terminal (103) of the second power supply, and its ground terminal is connected to the reference ground (GND) to obtain working power. The power supply module (1) includes a voltage regulating module (105), which is configured to connect to the first power supply positive terminal (1073) and convert the voltage value output by the first power supply positive terminal (1073) into the voltage value output by the second power supply positive terminal (103) and output it. The voltage regulating module (105) includes a sixteenth resistor (R16) and a first Zener diode (ZD1). One end of the sixteenth resistor (R16) is connected to the positive terminal (1073) of the first power supply, and the other end is connected to the cathode of the first Zener diode (ZD1). The anode of the first Zener diode (ZD1) is connected to the reference ground (GND). The voltage regulating module (105) further includes a fourth diode (D4) connected in series between the sixteenth resistor (R16) and the first power supply positive terminal (1073). The anode of the fourth diode (D4) is connected to the first power supply positive terminal (1073), and the cathode of the fourth diode (D4) is connected to the sixteenth resistor (R16).

3. The lighting driving circuit according to claim 2, characterized in that: The power supply control signal is the output voltage of the first power positive terminal (1073) of the power supply module (1); The first operating switch terminal (SW1-1) of the operating switch (SW1) is connected to the first positive power supply terminal (1073) of the power supply module (1), and the second operating switch terminal (SW1-2) of the operating switch (SW1) is connected to the power supply control terminal (101) of the power supply module (1). A first diode (D1) is connected in series between the second operating switch terminal (SW1-2) of the operating switch (SW1) and the power supply control terminal (101) of the power supply module (1). The anode of the first diode (D1) is connected to the second operating switch terminal (SW1-2) of the operating switch (SW1), and the cathode of the first diode (D1) is connected to the power supply control terminal (101) of the power supply module (1). The operation module (3) includes a switch signal output unit (301) with a switch signal output terminal (3011). The switch signal output unit (301) is connected to the operation switch (SW1) and outputs a corresponding switch signal to the outside through the switch signal output terminal (3011) according to the state of the operation switch (SW1). The switch signal output unit (301) is configured such that: when the operation switch (SW1) is on, the switch signal output terminal (3011) outputs a low-level switch signal; when the operation switch (SW1) is off, the switch signal output terminal (3011) outputs a high-level switch signal. The switch signal output unit (301) includes a first resistor (R1), a second resistor (R2), a third resistor (R3), and a first controllable switch (3012). The second operating switch terminal (SW1-2) of the operating switch (SW1) is connected to one end of the first resistor (R1), the other end of the first resistor (R1) is connected to one end of the second resistor (R2), and the other end of the second resistor (R2) is connected to the reference ground (GND). The first switch control terminal (3012-3) of the first controllable switch (3012) is connected to the connection point of the first resistor (R1) and the second resistor (R2). The first switch terminal (3012-1) of the first controllable switch (3012) is connected to one end of the third resistor (R3). The second switch terminal (3012-2) of the controllable switch (3012) is connected to the reference ground (GND), and the other end of the third resistor (R3) is connected to the positive terminal (103) of the second power supply. The connection between the third resistor (R3) and the first switch terminal (3012-1) of the first controllable switch (3012) forms the switch signal output terminal (3011). The first controllable switch (3012) is configured such that when its first switch control terminal (3012-3) is high, it controls the first switch terminal (3012-1) and the second switch terminal (3012-2) to be turned on, and when its first switch control terminal (3012-3) is low, it controls the first switch terminal (3012-1) and the second switch terminal (3012-2) to be turned off. The first controllable switch (3012) is configured as a first transistor (Q1), and the first transistor (Q1) is an NPN transistor. The collector (C) of the first transistor (Q1) is formed as the first switch terminal (3012-1), the emitter (E) of the first transistor (Q1) is formed as the second switch terminal (3012-2), and the base (B) of the first transistor (Q1) is formed as the first switch control terminal (3012-3). The switch signal output unit (301) further includes a second diode (D2) connected in series between the operation switch (SW1) and the first resistor (R1). The anode of the second diode (D2) is connected to the second operation switch terminal (SW1-2) of the operation switch (SW1), and the cathode of the second diode (D2) is connected to the second resistor (R2). The switch signal output unit (301) further includes a second capacitor (C2), one end of which is connected to the switch signal output terminal (3011), and the other end of which is connected to the reference ground (GND).

4. The lighting driving circuit according to claim 2 or 3, characterized in that: The power supply control signal is the output voltage of the first power positive terminal (1073) of the power supply module (1); The self-locking module (4) has a first self-locking switch terminal (402) and a second self-locking switch terminal (403). The first self-locking switch terminal (402) is connected to the first power positive terminal (1073) of the power supply module (1), and the second self-locking switch terminal (403) is connected to the power supply control terminal (101) of the power supply module (1). The self-locking module (4) is configured to control the on / off state between the first self-locking switch terminal (402) and the second self-locking switch terminal (403) according to the state of the self-locking control signal. A third diode (D3) is connected in series between the second self-locking switch terminal (403) of the self-locking module (4) and the power supply control terminal (101) of the power supply module (1). The anode of the third diode (D3) is connected to the second self-locking switch terminal (403) of the self-locking module (4), and the cathode of the third diode (D3) is connected to the power supply control terminal (101) of the power supply module (1).

5. The lighting driving circuit according to claim 4, characterized in that: The self-locking module (4) includes a second controllable switch (404) and a third controllable switch (405). The second switch control terminal (4043) of the second controllable switch (404) is formed as the self-locking control terminal (401). The fifth switch terminal (4051) of the third controllable switch (405) is formed as the first self-locking switch terminal (402). The sixth switch terminal (4052) of the third controllable switch (405) is formed as the second self-locking switch terminal (403). The control module (U2) has a self-locking signal output terminal (U2-1) for outputting a self-locking control signal. The self-locking signal output terminal (U2-1) of the control module (U2) The second controllable switch (404) is connected to the second switch control terminal (4043) of the second controllable switch (404) and controls the state of the self-locking control signal output terminal (U2-1) according to the switch signal received therefrom. The second controllable switch (404) is configured to control its on / off state according to the state of the self-locking control signal received by its second switch control terminal (4043). The third controllable switch (405) is configured to be on when the second controllable switch (404) is on and off when the second controllable switch (404) is off. The self-locking module (4) includes a fourth resistor (R4) and a seventh resistor (R7). The second switch control terminal (4043) of the second controllable switch (404) is connected to one end of the seventh resistor (R7) and the other end is connected to the reference ground (GND). The second controllable switch (404) has a third switch terminal (4041) and a fourth switch terminal (4042). The third switch terminal (4041) of the second controllable switch (404) is connected to the third switch control terminal (4053) of the third controllable switch (405). The fourth switch terminal (4042) of the second controllable switch (404) is connected to the reference ground (GND). The third switch control terminal (4053) of the third controllable switch (405) is connected to the reference ground (GND) through the fourth resistor (R4). The first power supply positive terminal (1073) is connected; the second controllable switch (404) is configured such that when its second switch control terminal (4043) is high, it controls the third switch terminal (4041) and the fourth switch terminal (4042) to be turned on, and when its second switch control terminal (4043) is low, it controls the third switch terminal (4041) and the fourth switch terminal (4042) to be turned off; the third controllable switch (405) is configured such that when its third switch control terminal (4053) is low, it controls the fifth switch terminal (4051) and the sixth switch terminal (4052) to be turned on, and when its third switch control terminal (4053) is high, it controls the fifth switch terminal (4051) and the sixth switch terminal (4052) to be turned off; The self-locking module (4) further includes a fifth resistor (R5) and a sixth resistor (R6). The fifth resistor (R5) is connected in series between the third switch terminal (4041) of the second controllable switch (404) and the third switch control terminal (4053) of the third controllable switch (405). The sixth resistor (R6) is connected in series between the self-locking signal output terminal (U2-1) of the control module (U2) and the second switch control terminal (4043) of the second controllable switch (404). The self-locking module (4) also includes a third capacitor (C3), one end of which is connected to the third switch terminal (4041) of the second controllable switch (404), and the other end is connected to the fourth switch terminal (4042) of the second controllable switch (404). The self-locking module (4) also includes a fourteenth resistor (R14), which is connected in series between the first self-locking switch terminal (402) and the first power supply positive terminal (1073) of the power supply module (1); The second controllable switch (404) is configured as a second transistor (Q2), and the second transistor (Q2) is an NPN transistor. The collector (C) of the second transistor (Q2) is formed as the third switch terminal (4041), the emitter (E) of the second transistor (Q2) is formed as the fourth switch terminal (4042), and the base (B) of the second transistor (Q2) is formed as the second switch control terminal (4043). The third controllable switch (405) is configured as a third transistor (Q3), and the third transistor (Q3) is a PNP type transistor. The emitter (E) of the third transistor (Q3) is formed as the fifth switch terminal (4051), the collector (C) of the third transistor (Q3) is formed as the sixth switch terminal (4052), and the base (B) of the third transistor (Q3) is formed as the third switch control terminal (4053).

6. The lighting driving circuit according to claim 2, characterized in that: The power supply module (1) includes a power supply unit (106) for providing electrical energy and a power supply control unit (107) connected to the power supply unit (106). The power supply control unit (107) has the power supply control terminal (101) and is configured to: in response to a power supply control signal received by the power supply control terminal (101), selectively allow or block the external output of electrical energy from the power supply unit (106) depending on whether it receives the power supply control signal. The power supply unit (106) has a positive power supply terminal (1061) and a negative power supply terminal (1062). The power supply control unit (107) has a positive terminal connection (1071), a negative terminal connection (1072), a first power supply positive terminal (1073), and a power supply negative terminal (104). The positive power supply terminal (1061) of the power supply unit (106) is connected to the positive terminal connection (1071) of the power supply control unit (107). The negative power supply terminal (1062) of the power supply unit (106) is connected to the negative terminal connection (1072) of the power supply control unit (107). The positive terminal connection (1071) of the power supply control unit (107) is connected to the first power supply positive terminal (1073). The power supply control unit (107) is configured to selectively turn on or off the connection between the negative terminal connection (1072) and the power supply negative terminal (104) depending on whether it receives a power supply control signal. The power supply control unit (107) is configured with a Bosch lithium battery protection board, model UBPE2-18V.

7. The lighting driving circuit according to claim 2, characterized in that: The control module (U2) has a drive signal output terminal (U2-2), and the drive signal output terminal (U2-2) of the control module (U2) is connected to the drive module (2) to control the voltage output of the drive module (2); The drive module (2) has a drive output terminal (201) and a feedback terminal (FB). The drive module (2) is configured to control the voltage output of its drive output terminal (201) according to the voltage received by its feedback terminal (FB). The drive signal output terminal (U2-2) of the control module (U2) outputs a PWM adjustment signal, and the drive signal output terminal (U2-2) of the control module (U2) is connected to the feedback terminal (FB) through the adjustment unit (5). The adjustment unit (5) is configured to convert the PWM adjustment signal into a DC voltage adjustment signal of the corresponding voltage according to the duty cycle and output it. The lighting drive circuit also includes a feedback unit (6), which is connected in series in the circuit where the lighting module (LED1) is located. The feedback unit (6) is configured to convert the current flowing through it into a corresponding feedback voltage signal and output it. The feedback voltage signal output by the feedback unit (6) is superimposed with the DC voltage regulation signal output by the regulation unit (5) and fed back to the feedback terminal (FB) of the drive module (2).

8. The lighting driving circuit according to claim 7, characterized in that: The drive module (2) includes a boost unit (U1), an energy storage inductor (L1), and a fifth diode (D5). The first end (L1-1) of the energy storage inductor (L1) is connected to the first power supply positive terminal (1073) of the power supply module (1). The second end (L1-2) of the energy storage inductor (L1) is connected to the anode of the fifth diode (D5). The cathode of the fifth diode (D5) is connected to the drive output terminal (201). The boost unit (U1) has the feedback terminal (FB). The boost unit (U1) is configured to control whether the second terminal (L1-2) of the energy storage inductor (L1) is connected to the reference ground (GND) in a pulse width modulation manner, and to control the charging and discharging process of the energy storage inductor (L1) by adjusting the duty cycle during pulse width modulation through the signal received by its feedback terminal (FB). The power supply terminal of the boost unit (U1) is connected to the second power supply positive terminal (103) of the power supply module (1), and the ground terminal of the boost unit (U1) is connected to the reference ground (GND). The boost unit (U1) has a first boost switch terminal (DRV) and a second boost switch terminal (SE). The first boost switch terminal (DRV) is connected to the second terminal (L1-2) of the energy storage inductor (L1), and the second boost switch terminal (SE) is connected to the reference ground (GND). Furthermore, the boost unit (U1) is configured to control the switching between the first boost switch terminal (DRV) and the second boost switch terminal (SE) in a pulse width modulation manner; The drive module (2) includes a current-limiting resistor unit (7), the boost unit (U1) has a current-limiting setting terminal (CS), one end of the current-limiting resistor unit (7) is connected to reference ground (GND) and the other end is connected to the current-limiting setting terminal (CS); and the drive module (2) is configured to: control and adjust the duty cycle during pulse width modulation according to the voltage magnitude on its current-limiting setting terminal (CS) to limit the output power of the drive module (2); The boost unit (U1) has a boost unit enable terminal (EN), which is connected to the self-locking control terminal (401). The boost unit (U1) is configured such that: when the self-locking control signal received by the enable terminal enables the self-locking module (4) to conduct the power supply control signal and the power supply control terminal (101), the boost unit (U1) is in a working state; when the self-locking control signal received by the enable terminal enables the self-locking module (4) to disconnect the power supply control signal and the power supply control terminal (101), the boost unit (U1) is in a standby state. The boost unit (U1) uses a boost constant current driver, which uses an SL8530B chip. Pin 1 of the SL8530B chip is its ground terminal, pin 2 of the SL8530B chip is the boost unit enable terminal (EN), pin 4 of the SL8530B chip is the feedback terminal (FB), pin 5 of the SL8530B chip is the first boost switch terminal (DRV), pin 6 of the SL8530B chip is the second boost switch terminal (SE) and the current limiting setting terminal (CS), and pin 8 of the SL8530B chip is its power supply terminal. The adjustment unit (5) includes a seventeenth resistor (R17) and an eleventh capacitor (C11). One end of the seventeenth resistor (R17) is connected to the drive signal output terminal (U2-2) of the control module (U2), and the other end is connected to one end of the eleventh capacitor (C11). The other end of the eleventh capacitor (C11) is connected to the reference ground (GND). The connection between the seventeenth resistor (R17) and the eleventh capacitor (C11) is connected to the feedback terminal (FB). The output of the regulating unit (5) is connected in series with the eighteenth resistor (R18) and then outputs outward.

9. The lighting driving circuit according to claim 7, characterized in that: The drive module (2) has an internal reference voltage and is configured to: reduce the voltage output of its drive output terminal (201) when the voltage signal received by the feedback terminal (FB) is higher than its internal reference voltage, and increase the voltage output of its drive output terminal (201) when the voltage signal received by the feedback terminal (FB) is lower than its internal reference voltage. The drive module (2) includes a protection unit (8), which is connected to the drive output terminal (201) and the feedback terminal (FB). The protection unit (8) is configured to: compare the voltage output by the drive output terminal (201) with its internal voltage threshold, and pull the voltage of the feedback terminal (FB) to be greater than the internal reference voltage of the drive module (2) when the voltage output by the drive output terminal (201) is greater than its internal voltage threshold. The protection unit (8) includes a second Zener diode (ZD2), the anode of the second Zener diode (ZD2) is connected to the feedback terminal (FB), and the cathode of the second Zener diode (ZD2) is connected to the drive output terminal (201); The lighting drive circuit includes a power supply detection network (9), and the voltage output from the first power supply positive terminal (1073) of the power supply module (1) is input to the control module (U2) through the power supply detection network (9); The power supply detection network (9) includes a nineteenth resistor (R19) and a twentieth resistor (R20). One end of the nineteenth resistor (R19) is connected to the first power positive terminal (1073) of the power supply module (1), and the other end of the nineteenth resistor (R19) is connected to one end of the twentieth resistor (R20). The other end of the twentieth resistor (R20) is connected to the reference ground (GND). The connection between the nineteenth resistor (R19) and the twentieth resistor (R20) is located in the control module (U2).

10. A lighting fixture, characterized in that: The invention includes a lighting driving circuit as described in any one of claims 1 to 9, and a lighting module (LED1) for emitting light, wherein the lighting driving circuit is connected to the lighting module (LED1) to drive the lighting module (LED1).

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