The difference between lead-acid batteries and lithium batteries for solar street lights is mainly reflected in the following aspects:
1. Energy Density: Lithium batteries have a higher energy density for the same volume or weight. , lithium batteries More energy can be stored, providing longer lighting duration. Lead-acid batteries, on the other hand, have a lower energy density and require more volume or weight to store the same energy.
2. Charging and discharging efficiency: The charging and discharging efficiency of lithium batteries is high, which can reach more than 90%, while the charging and discharging efficiency of lead-acid batteries is low, generally around 80%. %. High charging and discharging efficiency means that lithium batteries can use energy more efficiently and reduce energy waste.
3. DurationLife: Lithium batteries have a long lifespan, which can typically reach several thousand cycles, while lead-acid batteries have a shorter lifespan, which can typically only reach a few hundred cycles. Lifespan refers to the number of charge and discharge cycles a battery can complete. The longer the battery life, the longer the battery life.
4. Self-discharge rate: The self-discharge rate of lithium batteries is low, that is, when not used for a long time, the battery power loss is small. Lead-acid batteries have a high self-discharge rate, which means that when not used for a long time, the battery power gradually decreases. A lower self-discharge rate can reduce energy waste and improve battery efficiency.
5. Respect for thenenvironment: Lithium batteries are more environmentally friendly than lead-acid batteries because lithium batteries do not contain lead, a heavy metal, while lead-acid batteries contain harmful lead. The recycling rate of lithium batteries is also high, which can reduce environmental pollution.
In summary, lithium batteries have higher energy density, charge and discharge efficiency, service life and environmental friendliness than lead-acid batteries, but the cost of lithium batteries is higher. Therefore, when choosing a battery for solar street lights, you should comprehensively consider the above factors according to actual needs and budget.
What types of batteries are used in solar power generation systems?
There are a few problems with your calculations:
1. The battery must gaant some margin in the design, usually 70%, so the battery capacity should be 0.67*6* ( 3 +1)/0.7=23AH. If you enlarge it, you can choose the closest specification. This 1 is also necessary, because the battery still needs to work 6 hours that day, then it will be cloudy for 3 days.
2. In solar design, there is sunshine every day. There is an average daily lighting duration, then after taking into account a utilization coefficient, the capacity of the solar panel is calculated.
8W*6H/0.6 (utilization efficiency)/ 4H=20W.
These 4 hours are the average daily effective sunshine, meaning that even if it's raining or cloudy, the solar design still treats it as a sunny day. Since the effective sunshine of the whole year is released at this time, there is no need to increase the size of the solar panels.
Which brand of solar battery is the most durable?
Currently, batteries used in solar power generation systems on the marketThere are four main types, namely lead-acid batteries, lead-acid batteries gel, ternary lithium batteries and lithium iron phosphate batteries.
1. Lead-acid battery: The plates of lead-acid batteries are composed of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. The main advantages of lead-acid batteries are that the voltage is relatively stable, the price is relatively cheap, and the safety is high; the disadvantage is that the battery life is relatively short and the volume is much larger than ordinary batteries.
2. Gel battery: Gel battery is an optimized version of lead-acid battery, which has the advantages of being maintenance-free and low-maintenance. Ininternal, colloidal electrolyte is used instead of sulfuric acid electrolyte to improve. energy storage, discharge and security. Performance and lifespan have been improved; in addition, gel batteries can be used in the temperature range of -40°C to 65°C, and the low temperature performance is relatively good in the north. Alpine areas or tropical areas with higher temperatures, gel batteries are good. At the same time, its seismic performance is also very good, it can be used safely in various harsh conditions, and its service life is more than twice that of ordinary lead. batteries.
3. Ternary lithium battery: Ternary lithium battery has high specific energy, small size, fast charging and high price. Its lifespan is more than twice that of lead-acid batteries and its temperature rangeOperating cost is $2,000. -15℃-45℃. However, the safety of ternary lithium batteries is poor. If the battery is not internally stable or the production is not standardized and does not meet standards, the battery is most likely to explode during the overcharging process or in a high temperature environment.
4. Lithium iron phosphate battery: Lithium iron phosphate battery has high specific energy, small size, fast charging, strong stability and wide temperature range, but the price is also relatively high among all batteries. As technology advances, lithium iron phosphate batteries are increasingly used in applications.
Guoqiang solar battery is the best choice.
Guoqiang Solar Battery is a well-known brand specializing in the production of solar batteries. They have equipment and tecadvanced production technologies, and their products are of reliable quality and durability. Guoqiang solar batteries are made of high-quality materials, with long service life and stable performance. In addition, they also focus on product research, development and innovation and constantly improve product performance and efficiency. Based on user ratings and reviews, Guoqiang Solar Battery enjoys a high reputation in the market and has been recognized and trusted by the majority of users.