Which is the best choice for solar lithium，Solar street lights have become the main facility for lighting urban and rural roads nowadays. They are easy to install and do not require a large amount of wiring. By converting light energy into electrical energy, and then converting electrical energy into light energy, they bring brightness to the night. Among them, rechargeable and discharged batteries play a crucial role.
Compared to lead-acid batteries or gel batteries in the past, the commonly used lithium batteries now have better power and are easier to achieve fast charging and deep discharging, with a longer lifespan. Therefore, they also bring us a better lighting experience.
However, there are also differences in the quality of lithium batteries. Today, we will start with their packaging forms to see what characteristics these lithium batteries have and which one is better. There are often three types of packaging forms: cylindrical winding, square stacking, and square winding.
1) Cylindrical batteries (cylindrical wound type) generally use steel shells, but there are also aluminum shells. The process is relatively mature, with small size, flexible grouping, low cost, mature process, and good consistency; Poor heat dissipation design after grouping, heavy weight, and low specific energy.
2) Square batteries (square wound type) were mostly made of steel shells in the early days, but now they are mostly made of aluminum shells. Good heat dissipation, easy grouping design, good reliability, high safety, including explosion-proof valve, high hardness; One of the mainstream technological routes is high cost, multiple models, and difficulty in unifying the level of craftsmanship.
3) Soft pack battery (square stacked type), with aluminum-plastic film as the outer packaging, has flexible size changes, high specific energy, light weight, and relatively low internal resistance; The mechanical strength is relatively poor, the sealing process is difficult, the grouping structure is complex, the heat dissipation design is difficult, there is no explosion-proof device, it is easy to leak liquid, the consistency is poor, and the cost is high.
