Japanese automaker Nissan has just issued a recall for 19,077 Leaf electric cars in the US market due to the risk of fire when using DC fast chargers (Level 3). The affected cars were manufactured in the period 2021 - 2022.
According to documents from the US National Highway Traffic Safety Administration (NHTSA), the lithium-ion batteries in these vehicles can overheat during fast charging, leading to a risk of fire or explosion if continued use.
NHTSA said Nissan determined that the battery packs in the 2021-2022 Leafs had excessive lithium buildup inside the cells, which increased resistance and caused temperature and current fluctuations during charging.
When charging with a DC fast charger, the high resistance causes the battery temperature to rise rapidly, which can lead to “thermal runaway” overheating beyond control. If the user continues to charge, there is a risk of fire or explosion.
The issue is said to affect Nissan Leaf vehicles with 40 kWh and 62 kWh batteries. Due to the severity of the issue, Nissan is advising owners not to use Level 3 chargers until an official fix is available. The company is working on a new software update to control the charging process and prevent the battery from overheating.
Nissan Leaf owners in the U.S. will soon receive a notice confirming whether their vehicle is subject to recall. Once the software is finalized, Nissan will send a second notice, asking owners to bring their vehicle to a dealer for a free safety software update.
Up to now, there have been no specific fire or explosion cases related to this incident, but experts consider this an important recall, reflecting the potential risks in the fast charging process of electric vehicles.
Source: https://khoahocdoisong.vn/hon-19000-xe-nissan-leaf-bi-trieu-hoi-vi-loi-sac-nhanh-post2149058739.html
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