Separated LED drive circuit

Abstract

The utility model discloses a separated LED drive circuit, which comprises an LED module and a power supply module, and is characterized by further comprising a master control module and a drive module which are mutually independent, the LED module and the drive module are adjacently assembled on a preset lamp panel, and the LED module is electrically connected with the drive module; the main control module and the driving module are distributed away from each other and are electrically connected through a preset wire, the power supply module is electrically connected with the main control module, the driving module is separated from the main control module, so that the driving module and the LED module are jointly mounted on the lamp panel, and the influence of the driving module on the power supply module is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of lighting applications, and in particular to a discrete LED driver circuit. Background Technology

[0002] Existing high-power LED driver modules are generally integrated into the main control module, and the main control module is relatively close to the power supply battery, such as... Figure 1 As shown, under normal circumstances, the main control module that receives external commands controls the lamp to achieve lighting operation through the driver module. The high-power driver module generates heat during use. Furthermore, due to the structural design of the driver module being integrated into the main control module, the heat generated by the driver module is conducted to the battery through the circuit board. Overheating of the battery can easily lead to reduced battery life or even explosion, posing a safety hazard. In addition, most lamps are designed to use lithium batteries, and ordinary lithium-ion batteries are more reactive in high-temperature environments. Long-term use in a heated environment can easily cause unnecessary damage to the lamp as a whole and to the user.

[0003] Therefore, based on the above-mentioned technical problems, this application proposes a safer discrete LED driver circuit. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a safer discrete LED driver circuit.

[0005] To achieve the above objectives, this utility model provides a discrete LED driving circuit, comprising: an LED module and a power supply module, characterized in that: it further comprises an independent main control module and a driving module, wherein the LED module and the driving module are arranged adjacently on a pre-set lamp board, and the LED module and the driving module are electrically connected; the main control module and the driving module are distributed far apart and electrically connected to each other through a pre-set wire, and the power supply module is electrically connected to the main control module.

[0006] Furthermore, the power module includes: a rechargeable battery, a power socket for charging the rechargeable battery, and a charging / discharging unit connecting the rechargeable battery and the power socket.

[0007] Furthermore, the charging / discharging unit includes: a processor U2, an inductor L1 with an iron core, a diode D1, resistors R17, R28, and R36, a transistor Q8, and resistors R8 and R9 connected in parallel. The voltage input terminal of the charging / discharging unit is connected to a 5V positive terminal after being connected to capacitors C8 and C9 connected in parallel. The LED terminal of the charging / discharging unit is connected to a rechargeable battery after being connected to a resistor R13. A series connection between the LED terminal and resistor R13 includes a resistor R36 and a diode D1 connected in series, which are then grounded. A resistor R17 and a transistor Q8 are connected in sequence. One end of the charging / discharging unit is connected to a resistor R37 and then to the positive terminal of a 3.3V voltage source, while the other end is grounded. The voltage output terminal of the charging / discharging unit is connected to capacitors C12, C13, C14, and C15 connected in parallel and then grounded. The SW terminal of the charging / discharging unit is connected to an inductor L1 and then to a rechargeable battery. A resistor R14 and a capacitor C10 are connected in parallel between the inductor L1 and the rechargeable battery and then grounded. A capacitor C11 is connected in parallel between the inductor L1 and the rechargeable battery and then grounded. The BAT terminal of the charging / discharging unit is connected between a resistor R14 and a capacitor C10, and the KEY terminal of the charging / discharging unit is connected to a resistor R28.

[0008] Furthermore, the LED module includes: a first LED unit, a second LED unit, a third LED unit, and a fourth LED unit, wherein the output terminal of the fourth LED unit is connected to the input terminal of the third LED unit, the output terminal of the third LED unit is connected to the input terminal of the second LED unit, and the output terminal of the second LED unit is connected to the input terminal of the first LED unit; the input terminal of the fourth LED unit is connected to the driving module after being connected to a resistor R1.

[0009] Furthermore, the driving module includes: a first driving unit, a second driving unit, and a third driving unit that are connected to and independent of each other among the three primary color light-emitting diodes.

[0010] Furthermore, the first driving unit includes a processor U4, a resistor R25, and resistors R5 and R8 connected in parallel. The resistors R5 and R8 are connected to the PWM pulse width modulation terminal of the first driving unit, and one end of the resistor R25 is connected to the SET terminal of the processor U4 and the other end is grounded.

[0011] Furthermore, the second driving unit includes a processor U5, a resistor R26, and resistors R6 and R9 connected in parallel. Resistors R6 and R9 are connected to the PWM pulse width modulation terminal of the second driving unit, and one end of resistor R26 is connected to the SET terminal of processor U5 and the other end is grounded.

[0012] Furthermore, the third driving unit includes a processor U6, a resistor R27, and resistors R4 and R7 connected in parallel. Resistors R4 and R7 are connected to the PWM pulse width modulation terminal of the third driving unit, and one end of resistor R27 is connected to the SET terminal of the processor U6 and the other end is grounded.

[0013] Furthermore, the main control module includes: resistor R13, resistor R28, capacitor C6, capacitor C7, capacitor C18, switch X1, processor U3 for receiving signals, and antenna E1. The antenna E1 is connected to the ANT input terminal of processor U3. The voltage VINTA terminal of the main control module is connected to ground after being connected to capacitor C6. The two ends of switch X1 are connected to the MI terminal and the MO terminal respectively. The VIO terminal of the main control module is connected to the parallel capacitors C7 and C18 and then grounded.

[0014] The present invention adopts the above-described solution, and its beneficial effects are as follows:

[0015] By improving and optimizing the internal circuit design of the lamps, the driver module is separated from the main control module. Furthermore, the driver module and LED module are placed on the lamp board, keeping the driver module away from the battery module. This reduces the risk of battery life reduction or explosion due to long-term heat generation from the high-power driver module, increases the safety of the lamps, and makes their daily operation more stable and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a traditional LED operating circuit.

[0017] Figure 2 This is a schematic diagram of the circuit composition in this embodiment.

[0018] Figure 3 This is a schematic diagram of the structure in this embodiment.

[0019] Figure 4 This is the circuit schematic diagram in this embodiment. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] See appendix Figure 2 , 3As shown in this embodiment, a discrete LED driving circuit includes an LED module and a power supply module. The circuit is characterized by further including an independent main control module and a driving module. The LED module and the driving module are arranged adjacently on a pre-set lamp board, and the LED module and the driving module are electrically connected. The main control module and the driving module are distributed far apart and electrically connected to each other via pre-set wires. The power supply module is electrically connected to the main control module. Specifically, this differs from the traditional LED circuit where the driving module is located on the main control module (see attached diagram). Figure 1 As shown, in this embodiment, by separating the drive module from the main control module, the high-power drive module is kept relatively far away from the battery module, thereby preventing the heat generated by the high-power drive module during operation from being transferred to the power module adjacent to the main control module through the circuit board, which would affect the service life of the power module. Secondly, the separate design makes it easier to inspect and repair the drive module later, reducing maintenance costs. More specifically, the above-mentioned lamp board is preferably an aluminum substrate that can support the operation of the high-power module, thereby reducing the heat generation of the LED module and the drive module.

[0022] Furthermore, the power module includes: a rechargeable battery, a power socket for charging the rechargeable battery, and a charging / discharging unit connecting the rechargeable battery and the power socket. The charging / discharging unit includes: a processor U2, an inductor L1 with an iron core, a diode D1, resistors R17, R28, and R36, a transistor Q8, and resistors R8 and R9 connected in parallel. The voltage input terminal of the charging / discharging unit is connected to a 5V positive terminal via capacitors C8 and C9 connected in parallel. The LED terminal of the charging / discharging unit is connected to the rechargeable battery via resistor R13. A bypass connection between the LED terminal and resistor R13 is made between resistor R36 and diode D1 connected in series, then grounded, and followed by resistor R17 and transistor Q8 connected in sequence. One end of transistor Q8 is connected to resistor R37 and then to 3.3V. The positive terminal of voltage V is connected to ground; the voltage output terminal of the charging / discharging unit is connected to capacitors C12, C13, C14, and C15 in parallel and then grounded. The SW terminal of the charging / discharging unit is connected to inductor L1 and then to the rechargeable battery. Inductor L1 and the rechargeable battery are connected in parallel with resistor R14 and capacitor C10 in sequence and then grounded; inductor L1 and the rechargeable battery are connected in parallel with capacitor C11 and then grounded; the BAT terminal of the charging / discharging unit is connected between resistor R14 and capacitor C10, and the KEY terminal of the charging / discharging unit is connected to resistor R28, thus connecting the charging / discharging unit to the main control module and the rechargeable battery to achieve normal power supply function.

[0023] See appendix Figure 4As shown, in this embodiment, the LED module includes: a first LED unit, a second LED unit, a third LED unit, and a fourth LED unit. The output terminal of the fourth LED unit is connected to the input terminal of the third LED unit, the output terminal of the third LED unit is connected to the input terminal of the second LED unit, and the output terminal of the second LED unit is connected to the input terminal of the first LED unit. The input terminal of the fourth LED unit is connected to a resistor R1 and then connected to a driving module. By connecting the input terminals and output terminals of the LED units connected in series, the driving module controls the LED module through the input terminal of the fourth LED unit.

[0024] See appendix Figure 4 As shown, the driving module further includes a first driving unit, a second driving unit, and a third driving unit that are connected to and independent of each other with three primary color light-emitting diodes. By controlling the brightness and combination ratio of the RGB three-color LEDs on the three primary color light-emitting diodes of the driving module, the LED module can achieve high-quality lighting.

[0025] See appendix Figure 4 As shown, in this embodiment, the first driving unit includes a processor U4, a resistor R25, and resistors R5 and R8 connected in parallel. Resistors R5 and R8 are connected to the PWM pulse width modulation terminal of the first driving unit, and one end of resistor R25 is connected to the SET terminal of the processor U4, with the other end grounded. The second driving unit includes a processor U5, a resistor R26, and resistors R6 and R9 connected in parallel. Resistors R6 and R9 are connected to the PWM pulse width modulation terminal of the second driving unit, and one end of resistor R26 is connected to the SET terminal of the processor U5, with the other end grounded. The third driving unit includes a processor U6, a resistor R27, and resistors R4 and R7 connected in parallel. Resistors R4 and R7 are connected to the PWM pulse width modulation terminal of the third driving unit, and one end of resistor R27 is connected to the SET terminal of the processor U6, with the other end grounded. Through the cooperation of the three-color light-emitting diodes with the first, second, and third driving units, the lighting function of the LED module on the light board is realized.

[0026] See appendix Figure 4 As shown, the main control module further includes: resistor R13, resistor R28, capacitor C6, capacitor C7, capacitor C18, switch X1, processor U3 for receiving signals, and antenna E1. Antenna E1 is connected to the ANT input terminal of processor U3. The voltage VINTA terminal of the main control module is connected to ground after being connected to capacitor C6. The two ends of switch X1 are connected to the MI terminal and the MO terminal respectively. The VIO terminal of the main control module is connected to the parallel capacitors C7 and C18 and then grounded.

[0027] In summary, the discrete LED driver circuit of this embodiment achieves isolation between the driver module and the power supply module, providing users with a safer lighting experience. Furthermore, the circuit features high integration and modular design, facilitating future maintenance and upgrades, and has broad application prospects.

[0028] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A discrete LED driver circuit, comprising: The LED module and power supply module are characterized in that: they further include an independent main control module and a driver module, wherein the LED module and the driver module are arranged adjacently on a preset lamp board, and the LED module and the driver module are electrically connected; the main control module and the driver module are distributed far apart and are electrically connected to each other through a preset wire, and the power supply module is electrically connected to the main control module.

2. The discrete LED driving circuit according to claim 1, characterized in that: The power module includes: a rechargeable battery, a power socket for charging the rechargeable battery, and a charging / discharging unit connecting the rechargeable battery and the power socket.

3. The discrete LED driving circuit according to claim 2, characterized in that: The charging / discharging unit includes: a processor U2, an inductor L1 with an iron core, a diode D1, resistors R17, R28, and R36, a transistor Q8, and resistors R8 and R9 connected in parallel. The voltage input terminal of the charging / discharging unit is connected to a 5V positive terminal via capacitors C8 and C9 connected in parallel. The LED terminal of the charging / discharging unit is connected to a rechargeable battery via a resistor R13. A bypass connection is made between the LED terminal and resistor R13, consisting of a series resistor R36 and a diode D1 connected to ground, and then a resistor R17 and a transistor Q8 connected in sequence. The transistor Q8... The charging / discharging unit is connected to a 3.3V positive terminal via resistor R37, and grounded at the other end. The voltage output terminal of the charging / discharging unit is connected to capacitors C12, C13, C14, and C15 connected in parallel and then grounded. The SW terminal of the charging / discharging unit is connected to inductor L1 and then to the rechargeable battery. Resistor R14 and capacitor C10 are connected in parallel between inductor L1 and the rechargeable battery, and then grounded. Capacitor C11 is connected in parallel between inductor L1 and the rechargeable battery and then grounded. The BAT terminal of the charging / discharging unit is connected between resistor R14 and capacitor C10, and the KEY terminal of the charging / discharging unit is connected to resistor R28.

4. The discrete LED driving circuit according to claim 1, characterized in that: The LED module includes a first LED unit, a second LED unit, a third LED unit, and a fourth LED unit. The output terminal of the fourth LED unit is connected to the input terminal of the third LED unit, the output terminal of the third LED unit is connected to the input terminal of the second LED unit, and the output terminal of the second LED unit is connected to the input terminal of the first LED unit. The input terminal of the fourth LED unit is connected to the driving module after a resistor R1 is connected.

5. A discrete LED driving circuit according to claim 1, characterized in that: The driving module includes a first driving unit, a second driving unit, and a third driving unit that are connected to and independent of each other with three primary color light-emitting diodes.

6. A discrete LED driving circuit according to claim 4, characterized in that: The first driving unit includes a processor U4, a resistor R25, and resistors R5 and R8 connected in parallel. Resistors R5 and R8 are connected to the PWM pulse width modulation terminal of the first driving unit. One end of resistor R25 is connected to the SET terminal of processor U4 and the other end is grounded.

7. A discrete LED driving circuit according to claim 4, characterized in that: The second drive unit includes a processor U5, a resistor R26, and resistors R6 and R9 connected in parallel. Resistors R6 and R9 are connected to the PWM pulse width modulation terminal of the second drive unit, and one end of resistor R26 is connected to the SET terminal of processor U5 and the other end is grounded.

8. A discrete LED driving circuit according to claim 4, characterized in that: The third drive unit includes a processor U6, a resistor R27, and resistors R4 and R7 connected in parallel. Resistors R4 and R7 are connected to the PWM pulse width modulation terminal of the third drive unit, and one end of resistor R27 is connected to the SET terminal of the processor U6 and the other end is grounded.

9. A discrete LED driving circuit according to claim 1, characterized in that: The main control module includes: resistor R13, resistor R28, capacitor C6, capacitor C7, capacitor C18, switch X1, processor U3 for receiving signals, and antenna E1. The antenna E1 is connected to the ANT input terminal of processor U3. The VINTA terminal of the main control module is connected to ground after being connected to capacitor C6. The two ends of switch X1 are connected to the MI terminal and the MO terminal respectively. The VIO terminal of the main control module is connected to the parallel capacitors C7 and C18 and then grounded.

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