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Compared with lithium iron phosphate battery, ternary lithium battery has higher energy density and better discharge performance in winter. With the same volume and weight, the battery capacity of ternary lithium battery is larger.

However, the stability of ternary lithium battery is not as good as that of lithium iron phosphate battery, which is also a recognized fact in the industry.

Since the beginning of this year, many new energy vehicles in China have caught fire and spontaneously ignited, and most of the vehicles involved are equipped with ternary lithium batteries, which has also caused consumers to worry about the safety of electric vehicles equipped with ternary lithium batteries.

However, compared with various safety promises made on other vehicles, GAC Weilai is very arrogant and directly promises, "If the vehicle catches fire due to the 811 battery of Ningde Times, the whole vehicle will be fully compensated!"

In addition, GAC Weilai also proposes that all manufacturers of battery cars in the industry use Ningde Times batteries to make a joint commitment to protect the rights and interests of users!

It is reported that domestic electric vehicles mainly use nickel cobalt manganese (NCM) ternary lithium batteries. After containing manganese, the battery is more stable, while the proportion of nickel is reduced, and the battery is safer. The 811 ternary lithium battery is an "optimal solution" in the nickel cobalt manganese battery.

The structure of the battery is that the cathode material is nickel cobalt manganese, and the content ratio is 80%: 10%: 10%.

The single energy density can reach 300Wh/kg, which is one of the reasons why the endurance of domestic vehicles has increased dramatically after using the 811 ternary lithium battery of Ningde era.

However, the 811 battery also has hidden dangers. With the increase of nickel content, the stability of the cathode material will decline. Under cyclic charging and discharging as well as high temperature, the capacity is accelerated to decay, the battery service life is reduced, and the risk of spontaneous combustion due to thermal runaway is also increased.

It is understood that at present, only one model of GAC Weilai 007 has been launched under GAC Weilai. There are five models on sale, and the price after subsidy is 2598-400 yuan. Standard endurance version, battery capacity 73kWh, NEDC endurance 523km.

High endurance version, equipped with the 811 ternary lithium battery of Ningde era, with a battery capacity of 93kWh and a NEDC range of 643km.

However, even if GAC Weilai made a commitment that the whole vehicle would be fully compensated if the 811 battery of Ningde Times caught fire. But consumers will also consider carefully when buying.

After all, after a fire, vehicles are valuable and life is priceless. Therefore, how to reduce the fire accident rate of its vehicles has become an urgent industry problem for major new energy vehicle manufacturers.

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