Non so che batterie vengono usate per i pacchi batteria delle ebike... se per caso sono le 2170 cilindriche, questo articolo può essere interessante per ciò che riguarda la ricarica rapida...per chi non conosce EV Clinic, è un laboratorio all'avanguardia nella manutenzione, ricerca e sviluppo e riparazione di veicoli elettrici.
In particolare:
"One recurring design flaw in the 2170 cylindrical cells is their orientation—all are installed upside down in the modules. The cells are not entirely encapsulated in foam; instead, the thermal gap filler is applied only at the bottom of the cell. Condensation and moisture, which form in conditions of extreme temperature fluctuations, drip down onto the shoulder of the cell, where the – and + terminals are located. This leads to electrolysis, permanent cell damage, and subsequent discharge of the entire group.
The battery housing has also proven insufficiently robust against impacts from road debris or curbs. Deformations at the rear often damage the vent valve, while impacts at the front can crack the entire housing, allowing water to enter directly into the battery system. Aftermarket manufacturers or Tesla itself should consider designing steel reinforcements to protect the front and rear of the housing. Similar issues have been observed with VAG, Mercedes, and Renault batteries, although the Tesla Model S housing has so far demonstrated superior durability.
Vehicles that are frequently charged at DC fast chargers have shown greater resistance to cell oxidation and other moisture-related issues. Rapid heating during DC charging drives out even minimal residual moisture through the “umbrella valve” vents, contributing to improved battery longevity."
In particolare:
"One recurring design flaw in the 2170 cylindrical cells is their orientation—all are installed upside down in the modules. The cells are not entirely encapsulated in foam; instead, the thermal gap filler is applied only at the bottom of the cell. Condensation and moisture, which form in conditions of extreme temperature fluctuations, drip down onto the shoulder of the cell, where the – and + terminals are located. This leads to electrolysis, permanent cell damage, and subsequent discharge of the entire group.
The battery housing has also proven insufficiently robust against impacts from road debris or curbs. Deformations at the rear often damage the vent valve, while impacts at the front can crack the entire housing, allowing water to enter directly into the battery system. Aftermarket manufacturers or Tesla itself should consider designing steel reinforcements to protect the front and rear of the housing. Similar issues have been observed with VAG, Mercedes, and Renault batteries, although the Tesla Model S housing has so far demonstrated superior durability.
Vehicles that are frequently charged at DC fast chargers have shown greater resistance to cell oxidation and other moisture-related issues. Rapid heating during DC charging drives out even minimal residual moisture through the “umbrella valve” vents, contributing to improved battery longevity."
