Take you to understand solar garden lights

Yard lights need to be turned on for many years and at night, but it is not necessary. Some people worry that the electricity cost of using the garden lights all the year round will be high, so they will choose solar garden lights. At present, there are many types of solar garden lights. Let's take a look at the advantages of solar garden lights and how to purchase them. 1. Advantages of solar garden light 1. Healthy light The light does not contain ultraviolet rays and infrared rays, and is not easy to emit radiation (normal light rays contain ultraviolet rays and infrared rays) 　　 2. Ultra-long life semiconductor chips emit light, no filaments, no glass bubbles, and no fear of vibration , It will not break down any time soon, and the service life can reach 50,000 hours (the service life of ordinary incandescent lamps is only 1,000 hours, and the service life of ordinary energy-saving lamps is only 8,000 hours) 　　 3. Green environmental protection does not contain mercury and xenon, etc. Harmful elements, easy to recycle and reuse, and will not produce electromagnetic interference (ordinary lamps contain mercury and lead and other elements, electronic ballasts in energy-saving lamps will produce electromagnetic interference) 　　4, 90% of the light efficiency is converted into electricity Visible light (80% of the electric energy of ordinary incandescent lamps is converted into heat energy, and only 20% of the electric energy is converted into light energy) 　　5, protect eyesight DC drive, no stroboscopic (ordinary lights are AC driven, it will inevitably produce stroboscopic) 　　6. The coefficient requires low voltage and current, low heat generation, and is not prone to safety hazards. It can be used in dangerous places such as mines.　　 2. How to purchase solar garden lights 　　1, solar panels 　　 The main function of solar panels is to convert light energy into electrical energy. This phenomenon is called photovoltaic effect. Among many solar cells, the most common and practical ones are mainly monocrystalline silicon solar cells, which will be much cheaper than monocrystalline silicon cells, and the conversion efficiency has also been continuously improved in recent years. In the southern regions where there is a lot of sunlight on cloudy and rainy days, it is better to use monocrystalline silicon solar cells because the electrical performance parameters of monocrystalline silicon solar cells are relatively stable. Amorphous silicon solar cells are better when indoor sunlight is weak, because amorphous silicon solar cells have relatively low requirements for sunlight conditions.　　For a monolithic solar cell, it is a PN junction. In addition to generating electricity when sunlight shines on it, it also has all the characteristics of a PN junction. Under standard light conditions, its rated output voltage is 0.48V. The solar cell modules used in solar lighting fixtures are composed of multiple solar cells connected together.　　2, solar charge and discharge controller　　 no matter the size of the solar lamp, a good performance charge and discharge control circuit is indispensable. In order to prolong the service life of the battery, its charge and discharge conditions must be restricted to prevent the battery from overcharging and deep discharge. In addition, because the input energy of the solar photovoltaic power generation system is extremely unstable, the control of battery charging in the photovoltaic power generation system is more complicated than the control of ordinary battery charging. For the design of solar lamps, success and failure often depend on the success and failure of the charge and discharge control circuit. Without a good charge and discharge control circuit, solar lamps will not work well.　　3, solar energy storage battery　　Because the input energy of the solar photovoltaic power generation system is not stable enough, it generally needs to be equipped with a battery system to work, and solar lamps are no exception, and a battery must be configured to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. Their capacity selection directly affects the reliability and price of the system. The selection of battery capacity generally follows the following principles: First, on the premise of meeting the night lighting, store the energy of the solar cell components during the day as much as possible, and at the same time, it must be able to store the electrical energy that can meet the lighting needs of continuous rainy days at night. The battery capacity is too small to meet the needs of night lighting or continuous use; the battery capacity is too large, and the battery board cannot provide sufficient charging current, the battery is often in a state of power loss, which affects the battery life and is easy to cause waste .　　4, load　　The solar lighting products have the advantages of energy saving and environmental protection. Of course, the load should be energy saving and have a long life. We generally use LED lamps, 12V DC energy-saving lamps and low-pressure sodium lamps.　　 Most lawn lights use LED as the light source. The LED has a long life span, which can reach more than 100,000 hours, and the working voltage is low. It is very suitable for solar lawn lights.　　 Garden lights generally use LED lights or 12V DC energy-saving lamps. The voltage of the DC energy-saving lamps is DC, without inverter, which is convenient and safe.　　 street lamps generally use 12V DC energy-saving lamps and low-pressure sodium lamps. Low-pressure sodium lamps have high efficiency but are relatively expensive, and are less used. The advantages of solar garden lights and how to purchase instructions are as above. Solar garden lights can meet people's ideas of saving electricity and safe use of garden lights. It has many advantages. Consumers can have their own choices when buying solar garden lights. Buy products of well-known brands directly, so that its quality can be guaranteed.