Editor's Note: In recent years, the development of various types of LED streetlight products has flourished in the three places. In 2008, both Taiwan and the mainland have planned many LED demonstration road projects, which have injected technology into the LED industry. power.
From the luminous efficiency of LED street lamps 45Lm/W in 2008, the manufacturers have publicly announced the lighting level with 80Lm/W luminous efficiency at the end of 2009. Regardless of the quality of this 80lm/W luminous efficiency product, can it be announced at the end of 2008? The standard requirements of CNS15233, but also because the governments of the government to expand the timely support of domestic demand, let the LED lighting products' luminous efficiency in all walks of life advanced, enter the LED street lamp industry, which makes the research and development energy greatly improved, I believe in In the near future, the luminous efficiency of LED street lamps can be improved to replace traditional street lamps in the form of current high-pressure sodium lamps.
LED street light heat treatment
At present, all LED street lamp products can be roughly classified into an aluminum extrusion heat dissipating processor, a fin type heat dissipating processor and a heat pipe combined heat dissipating processor in the design of the heat dissipating processor, and among them, the aluminum extruded heat dissipating processor is mostly The processor is exposed to the appearance of the luminaire. The advantage of this method is that the cost of the heat dissipating processor can be relatively low, especially the development cost of the mold is more competitive, but in the development of high wattage products, the weight is a must pay attention to The factor, because the public light pole has a certain limit on the stress, so in the high wattage products, it is generally used finned heat sink treatment, or the application of heat pipe design Heat treatment device.
Technical threshold for LED street light quality
In addition to the development of thermal processors, another important role in the structure of LED street lights is the power supply, because the current LED products are lit by DC drive, so manufacturers must customize on the power supply. The company develops exclusive power supply for all types of LED street light products, and also adjusts the circuit according to different parts of national product safety regulations to meet the safety regulations of products sold around the world. We have seen from the experience of LED streetlight engineering projects in the three places on the two sides of the strait in recent years that the proportion of dead lights in LED street lamps is mostly caused by the instability of the power supply, so the stability of the power supply will also affect the product. When the LED street lamp is used outdoors, it can maintain good light decay control within three years.
Therefore, in the condition that the quality and reliability are no problem, the LED street lamp competition looks at the remaining soft lighting performance. Most of the current LED street lamp products use the German battalion OSRAM for the batwing wide-angle dichroism of the street lamp products. Light distribution design, but in the design of light distribution, each manufacturer still has its own flaws, and it is not necessarily all-inclusive. It is still possible to continue to make efforts to improve the road lighting efficiency of street lamps.
The main function of the Solar Charge Controller is to manage the charging and discharging process between the Solar Panel and the battery in the solar power generation system. Its main function is to protect the battery from overcharge and over-discharge damage, ensure battery charging efficiency, and stabilize the operation of the solar power generation system.
Main effect:
Charge control: The solar charge controller controls the charging process by monitoring the voltage and current generated by the solar panel to ensure that the battery is charged at the appropriate voltage and current to extend the battery life.
Overcharge protection: The solar charge controller can monitor the charging status of the battery, and when the battery is fully charged, it will automatically stop charging to avoid battery damage caused by overcharging.
Over-discharge protection: The solar charge controller can monitor the discharge state of the battery. When the battery power is lower than a certain level, it will automatically stop discharging to avoid battery damage caused by over-discharge.
Differences from other charge controllers:
The solar charge controller is a charge controller specially designed for solar power generation systems, the main differences are as follows:
Applicable Energy: The solar charge controller is suitable for solar power generation systems, mainly used to manage the charging and discharging process between solar panels and batteries. While other charge controllers may be suitable for different energy generation systems, such as wind energy, hydro energy, etc.
Charging characteristics: The solar charge controller is optimized for the characteristics of the solar panel, and can control the charging process according to the output power and voltage characteristics of the solar panel. Other charge controllers may be optimized for different types of energy generation characteristics.
Protection function: Solar charge controllers usually have overcharge protection and over-discharge protection functions to ensure the safe charging and discharging of batteries. Other charge controllers may have different protection functions, depending on the needs of the application scenario.
Overall, the main role of the solar charge controller is to manage the charging and discharging process in the solar power generation system, protect the battery from damage, and stabilize the system's operation. Compared with other charge controllers, it is optimized for the characteristics of solar power generation systems and has unique functions such as overcharge protection and over-discharge protection to meet the needs of solar power generation systems.
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