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Masa operasi lampu suria musim sejuk adalah singkat?

Masa operasi lampu suria musim sejuk adalah singkat?


The arrival of the cold wave is undoubtedly "adding insult to injury" to many solar street lamps. Baru-baru ini, ramai pengguna lampu jalan solar telah mencerminkan pada platform rangkaian bahawa lampu jalan akan mengalami tahap masalah yang berbeza seperti daya tahan yang dipendekkan, kelajuan pengecasan yang lebih perlahan dan ketidakupayaan untuk mengecas dalam suhu rendah pada musim sejuk.


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 Bateri LiFePO4 has better stability performance and more controllable capacity attenuation.


Walau bagaimanapun, perbezaan struktur juga membawa kepada kapasiti bateri LiFePO4 yang lebih rendah. Ion berhijrah dengan mudah dalam struktur hierarki litium terner, tetapi oktahedron mempunyai rintangan yang lebih besar dan aktiviti yang lebih rendah semasa proses penghijrahan, dan kuasanya lebih mudah dipengaruhi oleh persekitaran suhu luaran.


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.

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Akhirnya: 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.