Ziemas saules gaismas darbības laiks ir īss?
Ziemas saules gaismas darbības laiks ir īss?
The arrival of the cold wave is undoubtedly "adding insult to injury" to many solar street lamps. Pēdējā laikā daudzi saules ielu lampu lietotāji tīkla platformā ir atspoguļojuši, ka ielu lampām būs dažādas pakāpes problēmas, piemēram, saīsināta izturība, lēnāks uzlādes ātrums un nespēja uzlādēt zemā temperatūrā ziemā.
Why is LiFePO4 battery life attenuation more serious than ternary lithium battery at low temperature? In fact, this is due to the structural differences of LiFePO4. The ternary material is Ni-Co Mn, which is arranged in a layered structure, but LiFePO4 adopts an octahedral olivine structure, so the LiFePO4 akumulators has better stability performance and more controllable capacity attenuation.
Tomēr strukturālās atšķirības noved arī pie zemākas LiFePO4 akumulatora jaudas. Joni viegli migrē trīskāršā litija hierarhiskajā struktūrā, bet oktaedram migrācijas procesā ir lielāka pretestība un zemāka aktivitāte, un tā jaudu vieglāk ietekmē ārējās temperatūras vide.
The capacity retention rate of LiFePO4 batteries is about 60-70 percent at 0 degree . It decays to 40-55 percent at – 10 degree below zero, and only 20-40 percent at – 20 degree . The ternary lithium battery can still maintain the normal battery capacity of about 70 percent – 80 percent at – 20 degree , which is the reason why the solar streetlights equipped with LiFePO4 battery have a more serious life loss in winter.
Beidzot: in a short period of time, the problem of winter solar light endurance attenuation in winter is still "no solution". It is undeniable that at present, solar streetlights have many advantages, such as power saving, easy installation, high intelligence and so on. But can users accept the shortboard with reduced endurance in winter? Perhaps manufacturers should point out the problem of low-temperature lighting to users when they publicize street lamps, instead of waiting until winter to complain that the lamps they buy are only on in the middle of the night or not at all. Of course, after spring, the winter solar light will return to its original state.
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