Later in 2020 - early in 2021, the first model of the "new car-making force" - the EX5 series , had a number of fire and burning accidents. A number of WM EX5 fire and combustion accidents occurred during 2020, and finally ended with a recall; a number of WM EX5 series fire and combustion accidents that occurred during the period of 2021-2022 have not yet issued relevant official statements and solutions. With the frequent occurrence of fire accidents in the 2021-2022 WM EX5 fire, the problem of "locking electricity" has occurred to shorten the mileage of the low-temperature car environment in winter.
Through the launch of the "New Year's Eve User Premium" activity, the lucky users who are randomly selected on the surface will receive a comprehensive vehicle inspection and a 200 yuan JD card activity. However, some riders found that the mileage of the vehicle was greatly reduced after a comprehensive inspection. However, it cannot be confirmed whether the manufacturer has reduced the risk of fire and combustion caused by the thermal runaway of the vehicle's power through the "locking of electricity", and has to sacrifice the car experience of the owner.
At present, a total of 173 car owners have jointly sent lawyer letters to WM automobile manufacturers on serious infringement matters such as the serious discrepancy between the actual mileage of WM And the publicity, as well as the use of concealment and deceptive means to reduce the battery capacity of the car in order to cover up their major safety defects.
In December 2021, a WM EX5 in Zhengzhou had a fire and combustion accident at the charging station; then a WM EX5 combustion accident occurred in Hainan. Within 4 days, many cars were burned, and WM Motors did not respond.
From September to October 2020, there were four fires, burning and explosions in one month, two of which were e-hailing vehicles that had just been launched in Shaowu City, Fujian Province, on National Day. In this case, WM was finally forced to urgently recall 1282 2020 WM electric vehicles produced from June 8, 2020 to September 23, 2020, equipped with power batteries with batteries model ZNP3914895A-75A. At present, WM Automobile has become a new energy vehicle brand with a prominent proportion of fire and combustion accidents on the market.
Recently, another "new car-making force" Xiaopeng was also exposed by the owner of the car to "lock the electricity" problem and carried out multiple rounds of complaints. The relevant information from the "Black Cat Complaint" APP shows that "the first batch of 670 cars of Xiaopeng Automobile P7 has been innocently locked, and the 80.3-degree battery capacity can only be installed with about 70 degrees of electricity."
"Some car owners mentioned that this problem appeared after February 2021. In response to this problem, the 4S store technician gave a reply to the power of the background lock. The reply of the official customer of Xiaopeng Automobile is that there is currently no charging and locking the power", citing ID: AMV Automobile Managers Association, released on March 9, 2022 in Sohu "[AMV Global Xuanwen Lianbo] Xiaopeng P7 suspected of locking electricity; Mercedes-Benz jointly defended its rights? The Great Wall Fell 21%" article.
Is this Xiaopeng's official customer service lying? Or is the Technician of Xiaopeng 4S Shop lying? Of course, it is still up to Xiaopeng's official statement to prevail.
On February 23, 2022, netizens with the ID of Hebei Journey Detective posted a graphic dynamic in the social media headlines. This "#Shijiazhuang headline#Shijiazhuang Changan Wanda Xiaopeng car door, don't know what's wrong? "The number of consultations was 220,000.
In the Xiaopeng storefront located in the supermarket, there are 2 Xiaopeng P7s, and a white-haired old man in a wheelchair at the door holds up a card that reads", "Don't buy Xiaopeng cars, they are all liars."
It should be noted that the Xiaopeng P7, which is loaded with 80.87 kWh of electricity, is suitable for the system energy density of 170Wh/kg and the 811 ternary lithium battery system provided by the Ningde era. As of early March 2022, the G3, the first model of xiaopeng , a new car-making force , had had a number of fire and burning accidents, and the second model, the P7, had only burned one in February 2021. Compared with G3, the performance of Xiaopeng P7 is really good.
In July 2020, the evaluation team of the new energy information analysis network launched the article "Depth: Comprehensive Research and Judgment of the Technical Status of Xiaopeng P7 with Charging Power of 44 kilowatts". The model platform of Xiaopeng P7, the three-electric system and the DC fast charging efficiency of high temperature environment are studied and judged.
The 811 ternary lithium battery system adopts a 352-volt voltage platform, which is the most critical technical point of Xiaopeng P7. In other words, at 120 kW or 150 kW DC fast charge, the 352 volt power battery of Xiaopeng P7 has to withstand a high charging current. Higher charging current means that the cell generates more heat, the temperature difference between more cells inside the power battery system, and it is easy to cause thermal runaway - fire combustion accidents.
In addition, to distinguish the combustion factors of electric vehicle fires, due to the thermal runaway of the power battery? High voltage electronic control system? Low-voltage power system? Car interiors? Or due to external factors.
Of course, the 811 ternary lithium battery is not the key to causing the electric vehicle to catch fire and burn, or it depends on the positive and negative electrode materials of the battery, the strategy of the battery and the module in dealing with thermal runaway, and the technology of the power battery assembly to quickly release energy.
The author has this to say:
The owner of the "locked electricity" of WM sent a lawyer's letter to WM Motor, and the official customer service of Xiaopeng said that "there is no charging lock". At present, it is not clear how these two "new car-making forces" brands should respond and whether they will be favored by the 315 evening party.
To be continued...
Produced by the news group of the new energy information analysis network
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