Cooling Solutions for Tuya LED Panel Lights
Today, Xinjielighting, a professional Tuya LED panel light manufacturer, will introduce the heat dissipation problem of Tuya LED panel light and its improvement measures. The article will analyze the heat source of Tuya LED panel light, the importance of the heat dissipation function of Tuya LED panel light and the specific heat dissipation measures . Hope this article helps you.
Tuya LED Panel Light Heat Source
The heat generated by the Tuya LED panel light mainly comes from two sources, one is the temperature rise of the PN junction during the working process of the LED light source, and the other is the power devices in the LED drive circuit (such as power MOSFET, power diode, transformer, inductor and aluminum electrolytic capacitors).
The importance of heat dissipation function of Tuya LED panel light
If there is no good heat dissipation design and heat dissipation management, the light decay of Tuya LED panel light will be accelerated, the luminous efficiency of Tuya LED panel light will be reduced, the service life of components in LED and driving circuit will be shortened, and the reliability of Tuya LED panel light will be greatly affected. sex.
Once the internal temperature of the Tuya LED panel light exceeds the limit temperature of the LED and some electronic components, it will cause permanent damage to the LED and some electronic components, and the entire Tuya LED panel light can only be abandoned and scrapped.
Therefore, the heat dissipation of the Tuya LED panel light is an important guarantee for the reliable operation of the efficient LED lighting system, and it is a key technology related to the service life of the Tuya LED panel light.
At present, there are many ways and technical measures to solve the heat dissipation problem of Tuya LED panel lights, and the available solutions are as follows.
Cooling Solutions for Tuya LED Panel Lights
1) Choose LED light source with excellent heat dissipation performance
In the design of the heat dissipation system of the Tuya LED panel light, the LED or LED module with small thermal resistance and good heat dissipation performance should be selected first. Solve the heat dissipation problem of the Tuya LED panel light LED itself.
One is to improve the luminous efficiency of the LED chip, reduce the non-radiative recombination that does not emit light, and fundamentally reduce the heat generated by the vibration (or oscillation) of the LED lattice.
The second is to optimize the structure of the LED and install a heat sink for the Tuya LED panel light.
The selection of LED modules plays an important role in reducing temperature rise. Choosing LED lamp beads encapsulated by materials with high thermal conductivity and good consistency can improve the internal thermal diffusivity.
The metal (usually aluminum) substrate with high thermal conductivity is used as the wick board of the Tuya LED panel light, so that the temperature distribution of the heat sink is uniform, which can improve the heat dissipation effect.
2) Optimize the LED driver circuit design of the Tuya LED panel light to reduce the heat generated by the electrical system
Tuya LED panel light lighting power supplies are based on the topology of ordinary power supplies, especially switching power supplies, but it is different from other power supplies.
The driving power of Tuya LED panel light must work in high temperature environment for a long time, and Tuya LED panel light that replaces incandescent lamps and energy-saving lamps is generally less than 25W, the volume and space are small, and the power density is high, so the requirements for the driving circuit very high. To optimize the drive circuit design of the Tuya LED panel light, it is necessary to select the appropriate topology according to different lighting applications to obtain high conversion efficiency, minimize the power loss of the Tuya LED panel light, and reduce the heat generated by the driving power system.
Some LED drive circuits using a single-stage conversion structure can eliminate the need for aluminum electrolytic capacitors that are sensitive to temperature changes, which not only helps to reduce the heat of the LED drive power supply, but also helps to prolong the service life of the power supply system.
In the lighting power supply of Tuya LED panel light, some power electronic components that are resistant to high temperature should be used, such as aluminum electrolytic capacitors, and high temperature (105°C) components must be selected. If a room temperature capacitor with a lower rated temperature is used, it will often fail within 3 to 5 years, which will make LEDs with a lifespan of 50,000 hours that can be used for at least ten years can only survive for 3 to 5 years.
At present, many Tuya LED panel lights cannot be lit. It is not the failure of the Tuya LED panel light itself, but the failure of the LED drive circuit. The power MOSFET in the drive circuit of Tuya LED panel light should use devices with small on-resistance and good temperature characteristics, and add a heat sink as much as possible.
The high-frequency rectifier diode in the Tuya LED panel light drive circuit should use a Schottky diode with reduced forward voltage and high rectification efficiency to reduce the heat generated.
In addition, the Tuya LED panel light driver circuit uses a controller with a dimming function. Under the condition that the lighting needs can be met in low light, dimming the LED brightness can reduce the LED power consumption and prevent it from overheating. Especially for Tuya LED panel lights less than 25W, the heat dissipation problem is particularly critical due to the small size of the printed circuit board and the limited packaging space.
The dimming solution is an important way to prevent the LED from overheating for a long time, and the solution is very important.
3) Add radiator to Tuya LED panel light
Installing a radiator for Tuya LED panel lights is the main cooling method that is commonly used at present. The use of miniature electric fans can actively remove the heat of the LEDs. The space is too small to be achieved, and this cooling scheme requires additional power, reduces lighting efficiency, brings noise, and mechanical moving parts are easily damaged, thereby reducing system reliability.
Well, the above is the whole content of the heat dissipation problem of Tuya LED panel light brought to you today by led panel light supplier xinjielighting. I hope this article can make you understand the importance of heat dissipation function and the specific measures for heat dissipation. If you If you want to get more related content about Tuya LED panel lights, you can check our previous articles:
Components and performance characteristics of led panel lamp
What are the components of LED panel lights?
If you need to buy Tuya LED panel light, you can contact xinjielighting, we are a professional Tuya LED panel light manufacturer, there are a large number of led panel lights for sale, support retail and wholesale.
