The State Administration for Market Regulation has issued a document stating that WM Motor is recalling 1,282 electric vehicles with an electric core model of ZNP3914895A-75A produced from June 8, 2020 to September 23, 2020.
Since the end of September, WM Motor has had consecutive incidents of spontaneous combustion, and the core reason has finally been revealed.
The reason for this recall is that impurities were mixed into the production process by the battery supplier, causing abnormal lithium-ion separation in the power battery. Under extreme conditions, the battery cell may short circuit, causing a thermal runaway of the power battery and a fire hazard, posing a safety risk.
According to our research, this batch of vehicles uses 75Ah ternary 622 product with a battery cell energy density of 215 Wh/kg produced by ZTE Energy.
ZTE Energy, a wholly-owned subsidiary of ZTE Communications, has become WM Motor’s supplier, and its installation volume has continued to rise. In August this year, its installation volume reached 4.3 MWh, making it rank ninth.
The consecutive incidents of spontaneous combustion have obviously dealt a heavy blow to ZTE Energy. There are many reasons for the impurities in the battery, but whether it is due to substandard production environment or production process problems remains to be determined. We hope that ZTE Energy can quickly find out the cause and solve the problem.
As of September of this year, ZTE Energy has installed more than 3,000 vehicles for WM Motor. We know that the number of vehicles delivered for this batch was 1,282, and the remaining vehicles are still in the logistics and inventory stage.
This article is a translation by ChatGPT of a Chinese report from 42HOW. If you have any questions about it, please email bd@42how.com.