Illumination control device compatible with constant voltage and constant current output and clothes airing machine
By designing a lighting control device that is compatible with constant voltage and constant current output, the problem of the inability to dim and fixed cost in the prior art is solved, and a flexible output mode is realized to adapt to different needs.
Patent Information
- Application Number
- CN202420858798.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The existing constant voltage and constant current LED power supply cannot be dimmed, and the cost is fixed, the general purpose is low, and it cannot be compatible with the requirements of constant voltage and constant current output.
A lighting control device compatible with constant voltage and constant current output is designed, and the power input module, control module and lighting module on the control circuit board can be switched to constant voltage or constant current output. This device realizes constant voltage output when the constant current module slot is in an empty state, and the slot is connected to the constant current module to realize constant current output.
The device is compatible with constant voltage and constant current control, adapts to market and cost requirements, and improves adaptability. When low-cost and no dimming requirements are required, a constant voltage output can be selected; when accurate and efficient dimming effects are required, a constant current output can be achieved through the adjustment circuit.
Smart Images
Figure CN222464876U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lighting control device and a clothes drying machine compatible with constant voltage and constant current output, belonging to the technical field of lighting. Background Art
[0002] In the current clothes drying machine industry, large-size, high-brightness lighting is a future trend. It can replace balcony lighting or part of indoor lighting, and is increasingly favored by users. There are three types of lighting control output by switching power supply: constant voltage control, constant current control, and constant voltage and constant current control.
[0003] The existing constant voltage and constant current LED power supply can effectively control the stability of LED lighting by using constant voltage and constant current to control lighting, but it has some limitations. The constant voltage and constant current control chip can only output several fixed voltages and currents, and cannot be dimmed. In addition, the cost is relatively fixed and the versatility is low. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a lighting control device that is compatible with constant voltage and constant current outputs. The device is compatible with both constant voltage control and constant current control to drive lighting lamps. The two schemes can be selected according to market demand and cost requirements, and the adaptability is stronger.
[0005] Another object of the present invention is to provide a clothes drying machine.
[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:
[0007] A lighting control device compatible with constant voltage and constant current outputs comprises a control circuit board, on which a power input module, a control module and a lighting module are arranged, the power input module is connected to the control module and the lighting module respectively, the control module is connected to the lighting module, the control module comprises a main controller and a constant current module slot, when the constant current module slot is vacant, the main controller controls the lighting module to achieve constant voltage output, after the constant current module slot is connected to the constant current module, the main controller controls the lighting module to achieve constant current output.
[0008] Furthermore, when the constant current module slot is in an empty state, the control module further includes a first switch element, and the main controller is connected to the lighting module via the first switch element.
[0009] Furthermore, the first switch element is a first switch tube, a gate of the first switch tube is connected to a main controller, a drain of the first switch tube is connected to a lighting module, and a source of the first switch tube is grounded.
[0010] Furthermore, the control module also includes a first capacitor, a second capacitor, a first bypass capacitor, a second bypass capacitor and a contact, the contact is arranged between the first end of the first bypass capacitor and the first end of the second bypass capacitor, and the contact is in a closed state, the first ends of the first capacitor, the second capacitor, the first bypass capacitor and the second bypass capacitor are connected to the power input module, the second ends of the first capacitor, the second capacitor and the second bypass capacitor are grounded, and the two ends of the first bypass capacitor are connected to the lighting module.
[0011] Furthermore, the constant current module includes a step-down constant current unit and a second switching element. After the constant current module slot is connected to the constant current module, the constant current module is respectively connected to the power input module and the lighting module, the main controller is connected to the step-down constant current unit, and the step-down constant current unit is connected to the lighting module through the second switching element.
[0012] Furthermore, the second switch element is a second switch tube, a gate of the second switch tube is connected to the step-down constant current unit, a drain of the second switch tube is connected to the lighting module, and a source of the second switch tube is grounded.
[0013] Furthermore, the ten pins of the constant current module are respectively connected to the constant current module slots, the first pin and the third pin of the constant current module are grounded, the second pin and the fourth pin of the constant current module are connected to the power input module, the fifth pin of the constant current module is connected to the main controller, and the seventh pin, the eighth pin, the ninth pin and the tenth pin of the constant current module are connected to the lighting module.
[0014] Furthermore, the signal input end of the step-down constant current unit is connected to the constant current module, which is connected to the main controller through the constant current module, and the signal output end of the step-down constant current unit is connected to the second switch element, which is connected to the lighting module through the second switch element.
[0015] Furthermore, the control module also includes a first capacitor, a second capacitor, a first bypass capacitor, a second bypass capacitor, a third bypass capacitor and a contact, the contact is arranged between the first end of the first bypass capacitor and the first end of the third bypass capacitor, and the contact is in a disconnected state, the first ends of the first capacitor, the second capacitor, the first bypass capacitor and the third bypass capacitor are connected to the power input module, the second ends of the first capacitor, the second capacitor, the second bypass capacitor and the third bypass capacitor are grounded, and the two ends of the first bypass capacitor are connected to the lighting module.
[0016] Another purpose of the utility model can be achieved by adopting the following technical solutions:
[0017] A clothes drying machine comprises the lighting control device mentioned above.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] A constant current module slot is provided on the control circuit board of the utility model. When the constant current module slot is vacant, the control module controls the lighting module to realize constant voltage output. After the constant current module slot is connected to the constant current module, the control module controls the lighting module to realize constant current output. It is compatible with both constant voltage control and constant current control to drive the lighting lamp. The two schemes can be selected according to market demand and cost demand, and the adaptability is stronger. When low cost and no dimming effect requirements are required for lighting effects, constant voltage output can be selected. If precise, efficient and wide-range dimming effects are required, constant current output control of lighting can be achieved by adjusting some circuits and components. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0021] Figure 1 It is a structural block diagram of a lighting control device compatible with constant voltage and constant current output according to an embodiment of the utility model.
[0022] Figure 2 This is a schematic diagram of a constant voltage output circuit according to an embodiment of the present utility model.
[0023] Figure 3 This is a schematic diagram of a constant current output circuit according to an embodiment of the present utility model. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0025] Example:
[0026] like Figure 1As shown, this embodiment provides a lighting control device compatible with constant voltage and constant current outputs, the device includes a control circuit board 101, and the control circuit board 101 is provided with a power input module 1011, a control module 1012 and a lighting module 1013, the power input module 1011 is respectively connected to the control module 1012 and the lighting module 1013, the control module 1012 is connected to the lighting module 1013, wherein the control circuit board 101 adopts a printed circuit board (Printed Circuit Board, PCB for short).
[0027] like Figure 1 and Figure 2 As shown, the control module 1012 includes a main controller and a constant current module slot CN2-1. The main controller is a main control integrated circuit (IC) chip, and the constant current module slot CN2-1 is a gold finger slot. The lighting control device defaults to constant voltage output. At this time, the constant current module slot CN2-1 is not connected to the constant current module, that is, the constant current module slot CN2-1 is in an empty state, and the lighting control device is in a constant voltage lighting mode. The main controller controls the lighting module 1013 to achieve constant voltage output.
[0028] In one embodiment, when the constant current module slot CN2-1 is in an empty state, the control module 1012 also includes a first switching element, and the main controller is connected to the lighting module 1013 through the first switching element. The lighting module 1013 is an LED. The main controller can output a pulse width modulation (PWM) signal to control the first switching element to switch the LED on and off and adjust the brightness.
[0029] In one embodiment, the first switching element is a first switching tube Q1, the gate (G pole) of the first switching tube Q1 is connected to the main controller, the drain (D pole) of the first switching tube Q1 is connected to the lighting module 1013, and the source (S pole) of the first switching tube is grounded.
[0030] In one embodiment, the drain (D electrode) of the first switch tube Q1 is directly connected to the cathode (LED-) of the LED, and is connected to the anode (LED+) of the LED through the bypass capacitor CE1.
[0031] In one embodiment, the control module also includes a first capacitor (capacitor C2), a second capacitor (capacitor C3), a first bypass capacitor (bypass capacitor CE1), a second bypass capacitor (bypass capacitor CE3) and a contact J1, wherein the contact J1 is arranged between the first end of the bypass capacitor CE1 and the first end of the bypass capacitor CE3, and the contact J1 is in a closed state, the first ends of the capacitors C2, C3, bypass capacitor CE1 and bypass capacitor CE3 are connected to the power input module 1011, the second ends of the capacitors C2, C3 and bypass capacitor CE3 are grounded, the two ends of the bypass capacitor CE1 are connected to the lighting module 1013, and the power input module 1011 filters and stores energy through the capacitors C2, C3, bypass capacitor CE1 and bypass capacitor CE3 and outputs it to the LED.
[0032] In one embodiment, two ends of the bypass capacitor CE1 are connected to the positive electrode (LED+) and the negative electrode (LED-) of the LED respectively.
[0033] like Figure 1 and Figure 3 As shown, the gold finger end of the constant current module CN2-2 is connected to the constant current module slot CN2-1. At this time, the lighting control device is in constant current lighting mode, and the lighting module 1013 is controlled by the control module 1012 to achieve constant current output.
[0034] In one embodiment, after the constant current module slot CN2-1 is connected to the constant current module (gold finger), the contact J1 is disconnected and the first switch element is removed. The pin part of the constant current module is CN2-2. The constant current module includes a step-down constant current unit and a second switch element. The step-down constant current unit plays a role of step-down constant current. Under the action of the constant current module slot CN2-1, the pin part CN2-2 of the constant current module can be connected to the power input module 1011 and the lighting module 1013 respectively. The step-down constant current chip U1 is connected to the lighting module 1013 through the second switch element, and the step-down constant current is output to the LED through the step-down constant current unit. The main controller can output a pulse width modulation signal to the step-down constant current unit, and the step-down constant current unit controls the second switch element to realize the operation of switching the LED and adjusting the brightness.
[0035] In one embodiment, the second switching element is a second switching tube Q2, the gate (G pole) of the second switching tube Q2 is connected to the step-down constant current chip U1, the drain (D pole) of the second switching tube Q2 is connected to the lighting module 1013, and the source (S pole) of the second switching tube is grounded.
[0036] In one embodiment, the drain (D electrode) of the second switch tube Q2 is connected to the positive electrode (LED+) of the LED through the diode D1 , and is connected to the negative electrode (LED-) of the LED through the transformer L1 .
[0037] In one embodiment, the constant current module slot CN2-1 has ten ports, and the pin part CN2-2 of the constant current module has ten pins. The ten pins of the constant current module are respectively connected to the constant current module slot CN2-1, and the ten pins of the constant current module are respectively the first pin (pin 1), the second pin (pin 2), the third pin (pin 3), the fourth pin (pin 4), the fifth pin (pin 5), the sixth pin (pin 6), the seventh pin (pin 7), the eighth pin (pin 8), the ninth pin (pin 9) and the tenth pin (pin 10), wherein the first pin and the third pin are grounded, the second pin and the fourth pin are connected to the power input module 1011, the fifth pin is connected to the main controller, and the seventh pin, the eighth pin, the ninth pin and the tenth pin are connected to the lighting module 1013.
[0038] In one example, the eighth pin and the tenth pin of the constant current module are connected to the positive electrode (LED+) of the LED, and the seventh pin and the tenth pin are connected to the negative electrode (LED-) of the LED.
[0039] In one embodiment, the signal input end of the step-down constant current unit is connected to the constant current module, which is connected to the main controller through the constant current module, and the signal output end of the step-down constant current unit is connected to the second switch element, which is connected to the lighting module through the second switch element.
[0040] In one embodiment, the step-down constant current unit is a step-down constant current chip U1, which can adopt Hi7300 chip. The step-down constant current chip U1 has eleven pins, and the eleven pins are respectively a first pin (pin 1), a second pin (pin 2), a third pin (pin 3), a fourth pin (pin 4), a fifth pin (pin 5), a sixth pin (pin 6), a seventh pin (pin 7), an eighth pin (pin 8), a ninth pin (pin 9), a tenth pin (pin 10) and an eleventh pin (pin 11), wherein the first pin is an EN / PWM pin, i.e., an enable / PW M to analog dimming terminal, connect the enable / PWM to analog dimming terminal as the signal input terminal to the fifth pin of the constant current module, and connect it to the main controller through the fifth pin of the constant current module, so that the main controller can output a pulse width modulation signal to the step-down constant current unit U1; the second pin is the LD pin, the second pin is connected to the capacitor C11 and then grounded; the third pin is the CLPF pin, the third pin is connected to the capacitor C12 and then grounded; the fourth pin is the FSET pin, the fourth pin is connected to the capacitor C13 and then grounded; the fifth pin is the CS pin, the fourth pin is connected to the capacitor C14 and then grounded; the sixth pin is the GATE pin, which is NMOS The GATE driving end uses the NMOS GATE driving end as a signal output end to connect the second switch element, specifically to the gate (G pole) of the second switch tube Q2, and is connected to the lighting module through the second switch element; the seventh pin is the VIN pin, the seventh pin is connected to the capacitor C10 and then to the ground; the eighth pin is the VDD pin, the eighth pin is connected to the capacitor C9 and then to the ground; the ninth pin is the CMP pin, the ninth pin is connected to the capacitor C7 and the capacitor C8 and then to the ground; the tenth pin is the IS pin, the tenth pin is connected to the capacitor C6 and then to the ground, and is connected to the positive pole (LED+) of the LED; the eleventh pin is the GND pin, and the eleventh pin is directly grounded.
[0041] In one embodiment, the step-down constant current chip U1 is connected to the pulse modulation signal output by the main controller through the fifth pin of the constant current module. After stepping down the pulse modulation signal, the constant current signal is output to the seventh pin, the eighth pin, the ninth pin, and the tenth pin of the constant current module through LED+ and LED-, and then output to the LED through the constant current module slot CN2-1.
[0042] In one embodiment, the control module also includes a third bypass capacitor (bypass capacitor CE6), the first end of the bypass capacitor CE6 is connected to the power input module 1011, the contact J1 is set between the first end of the bypass capacitor CE1 and the first end of the bypass capacitor CE6, and the contact J1 is in a disconnected state, the second end of the bypass capacitor CE6 is grounded, and the power input module 1011 inputs the constant current module through capacitor C2, capacitor C3, bypass capacitor CE1, bypass capacitor CE3, and bypass capacitor CE6.
[0043] In one embodiment, the control module also includes a first resistor (R7), a second resistor (resistor R8), a third resistor (resistor R10) and a fourth resistor (resistor R11), the first end of the resistor R7 is connected to the tenth pin of the step-down constant current unit U1, the first end of the resistor R8 is connected to the second end of the resistor R7, the first end of the resistor R10, and the positive electrode (LED+) of the LED, the second end of the resistor R8, the second end of the resistor R10 is connected to the first end of the resistor R11, and the second end of the resistor R11 is connected to the negative electrode (LED-) of the LED, and the output current can be adjusted by changing the resistance values of the resistor R8 and the resistor R10.
[0044] The lighting control device of this embodiment can also be extended to multi-channel control to achieve dual color temperature control or multi-color temperature and multi-color control such as RGB.
[0045] In one embodiment, this embodiment further provides a clothes drying machine, which includes the above-mentioned lighting control device.
[0046] To sum up, a constant current module slot is set on the control circuit board of the utility model. When the constant current module slot is vacant, the control module controls the lighting module to achieve constant voltage output. After the constant current module slot is connected to the constant current module, the control module controls the lighting module to achieve constant current output. It is compatible with both constant voltage control and constant current control to drive the lighting lamp. According to market demand and cost requirements, the two schemes can be selected, which are more adaptable. When you want a lighting effect with low cost and no dimming effect requirements, you can choose constant voltage output. If you want to achieve precise, efficient and wide-range dimming effects, you can adjust some circuits and components to achieve constant current output control lighting.
[0047] The above is only a preferred embodiment of the utility model patent, but the protection scope of the utility model patent is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the utility model patent according to the technical solution and utility model concept of the utility model patent, which are all within the protection scope of the utility model patent.
Claims
1. A lighting control device compatible with constant voltage and constant current output, characterized in that: It includes a control circuit board, on which a power input module, a control module and a lighting module are arranged. The power input module is connected to the control module and the lighting module respectively, and the control module is connected to the lighting module. The control module includes a main controller and a constant current module slot. When the constant current module slot is vacant, the main controller controls the lighting module to achieve constant voltage output. After the constant current module slot is connected to the constant current module, the main controller controls the lighting module to achieve constant current output.
2. The lighting control device according to claim 1, characterized in that: When the constant current module slot is in an empty state, the control module further includes a first switch element, and the main controller is connected to the lighting module via the first switch element.
3. The lighting control device according to claim 2, characterized in that: The first switch element is a first switch tube, a gate of the first switch tube is connected to the main controller, a drain of the first switch tube is connected to the lighting module, and a source of the first switch tube is grounded.
4. The lighting control device according to any one of claims 2 to 3, characterized in that: The control module also includes a first capacitor, a second capacitor, a first bypass capacitor, a second bypass capacitor and a contact, wherein the contact is arranged between the first end of the first bypass capacitor and the first end of the second bypass capacitor, and the contact is in a closed state, the first ends of the first capacitor, the second capacitor, the first bypass capacitor and the second bypass capacitor are connected to the power input module, the second ends of the first capacitor, the second capacitor and the second bypass capacitor are grounded, and the two ends of the first bypass capacitor are connected to the lighting module.
5. The lighting control device according to claim 1, characterized in that: The constant current module includes a step-down constant current unit and a second switch element. After the constant current module slot is connected to the constant current module, the constant current module is connected to the power input module and the lighting module respectively, the main controller is connected to the step-down constant current unit, and the step-down constant current unit is connected to the lighting module through the second switch element.
6. The lighting control device according to claim 5, characterized in that: The second switch element is a second switch tube, a gate of the second switch tube is connected to the step-down constant current unit, a drain of the second switch tube is connected to the lighting module, and a source of the second switch tube is grounded.
7. The lighting control device according to claim 5, characterized in that: The ten pins of the constant current module are respectively connected to the constant current module slots, the first pin and the third pin of the constant current module are grounded, the second pin and the fourth pin of the constant current module are connected to the power input module, the fifth pin of the constant current module is connected to the main controller, and the seventh pin, the eighth pin, the ninth pin and the tenth pin of the constant current module are connected to the lighting module.
8. The lighting control device according to claim 5, characterized in that: The signal input end of the step-down constant current unit is connected to the constant current module, and is connected to the main controller through the constant current module. The signal output end of the step-down constant current unit is connected to the second switch element, and is connected to the lighting module through the second switch element.
9. The lighting control device according to any one of claims 5 to 8, characterized in that: The control module also includes a first capacitor, a second capacitor, a first bypass capacitor, a second bypass capacitor, a third bypass capacitor and a contact, wherein the contact is arranged between the first end of the first bypass capacitor and the first end of the third bypass capacitor, and the contact is in a disconnected state, the first ends of the first capacitor, the second capacitor, the first bypass capacitor and the third bypass capacitor are connected to the power input module, the second ends of the first capacitor, the second capacitor, the second bypass capacitor and the third bypass capacitor are grounded, and the two ends of the first bypass capacitor are connected to the lighting module.
10. A clothes drying machine, characterized in that: The lighting control device comprises the lighting control device according to any one of claims 1 to 9.