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Do you know what factors will affect the service life of solar traffic signs?
随着社会进步，经济发展， “节能减排低碳环保”理念越来越深入人心，目前各种交通标志牌、突起路标、轮廓标等普遍采用的是按照逆反射原理制成的被动发光型标志，这类设施虽然造价低、故障率低，但它需要司机打开远光灯且在材料规定的几何条件和良好的气候条件下，才能有较好的警告或诱导效果，一旦遇到弯道、陡坡或雨雪雾等条件时，其功能将大大降低。 With the social progress and economic development of solar traffic signs , the concept of "energy saving, emission reduction, low carbon and environmental protection" has become more and more popular. At present, various traffic signs, protruding road signs, outline signs, etc. are generally made according to the principle of retroreflection This type of passive light-emitting sign, although this kind of facility is low in cost and low in failure rate, it requires the driver to turn on the high beam and to have a good warning or induction effect under the specified geometric conditions and good climate conditions of the material. When encountering conditions such as curves, steep slopes or rain, snow and fog, its function will be greatly reduced. Therefore, the use of more obvious reflective materials on solar energy signboards, coupled with solar lighting panels, significantly increases the light intensity and viewing angle, and the sight effect is significantly improved. It has promoted the use of green and clean energy in the field of highway transportation construction, and also made important social benefits in protecting the environment. So, what factors affect the service life of solar traffic signs? Is everyone clear? Let ’s follow along with the editor.
、太阳能板 1 , solar panels
Traffic sign manufacturers introduced that solar cells are devices that directly convert light energy into electricity through the photoelectric effect or photochemical effect. Silicon series solar cells are currently relatively mature in power generation. The advantages and disadvantages of solar cells and their lifetime depend mainly on silicon wafers. : 单晶硅、多晶硅和非晶硅。 Silicon wafers are generally divided into three types according to the crystal type of the material : single crystal silicon, polycrystalline silicon, and amorphous silicon. 15% ，在大规模应用和工业生产中占据主导地位，价格偏高。 The efficiency of single crystal silicon photoelectric conversion is relatively high, and its efficiency can reach 15% during mass production, occupying a dominant position in large-scale applications and industrial production, and the price is relatively high. 10% 左右。 The efficiency of polysilicon and amorphous silicon is only about 10% . Comparatively speaking, the cost of amorphous silicon is relatively low, and the weak light effect is good, but the photoelectric efficiency of amorphous silicon decays quickly and the stability is not high. Therefore, monocrystalline silicon solar cells should be mainly selected in outdoor transportation products. 15 年以上， 15 年后其光电转换效率仍能达到 85% 。 The life of single crystal silicon battery is more than 15 years, and its photoelectric conversion efficiency can still reach 85% after 15 years .
、 LED 2.LED
LED 作为一种新型光源在各个领域得到越来越广泛的应用。 Traffic sign manufacturers introduced that LED, as a new type of light source, is becoming more and more widely used in various fields. LED 芯片来说，其较长工作时间普遍达到 10 年以上，而且是连续工作。 Long life, as far as LED chips produced by various brand manufacturers in various regions , their long working time generally reaches more than 10 years, and it is continuous work. LED 的电光能量转换率是普通白炽灯的 5-8 倍，获得同样的光照亮度能节省 60% 以上电量。 Energy saving, LED 's electro-optical energy conversion rate is 5-8 times that of ordinary incandescent lamps , and the same brightness can save more than 60% of electricity.
、标牌材料 3 , sign material
都是采用铝板制作，回收价值高 , 不法分子就把偷盗交通标志牌做为了生财之道。 Highway traffic signs are made of aluminum plates with high recycling value , and criminals use stolen traffic signs as a way to make money. The value of solar signage is higher than that of ordinary signage. The theft prevention of solar signage should be considered.
Moulded glass fiber reinforced plastic material has strong adhesion to reflective film, strong wind load resistance, aging resistance and low cost. It is an ideal and mature sign board surface anti-theft material.
In the design principles of solar energy products, light energy is converted into electrical energy and stored for backup purposes. In the absence of sunlight, power is recharged by energy storage equipment. : 电池储能、电容储能、电感储能，其中电池储能因为容量大、体积小、成本便宜等优点相对使用比较广泛。 There are three main types of energy storage equipment : battery energy storage, capacitor energy storage, and inductance energy storage. Among them, battery energy storage is relatively widely used because of its large capacity, small size, and low cost. As a solar traffic sign, it is suitable for storing energy with batteries. Energy storage batteries are accumulators. They are divided into lead-acid batteries, nickel-metal hydride batteries, and lithium batteries according to their internal materials. The batteries that meet the traffic outdoor environment are nickel-metal hydride and lithium batteries, because they are relatively superior to lead-acid batteries in terms of high and low temperature characteristics, capacity-to-volume ratio, environmental protection, and life. 60% 容量统计铅酸电池循环次数在 400 次左右，镍氢电池在 500 次左右，锂电在 600 左右。 If the 60% capacity is counted, the number of cycles of lead-acid batteries is about 400 times, that of nickel-metal hydride batteries is about 500 times, and that of lithium batteries is about 600 . The traffic sign manufacturer introduced that the cycle number refers to the full charge and full discharge of the battery as a cycle. 1/5 电量时就充电的，浅放浅充的浮充电状态的工作方式可以大大延长电池使用年限的。 In fact, most of the time, the battery of the solar energy sign is charged when the battery is discharged by 1/5 , the working mode of the floating charge state of shallow discharge can greatly extend the battery life. 4 年左右。 Lithium battery is used routinely and has a life of about 4 years. Batteries are the bottleneck limiting their life. The batteries of such products should be moisture-resistant and easy to replace.
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