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In recent years, the battery safety of new energy vehicles has been concerned by the majority of consumers, and the major car companies have also launched their own battery safety technology. For example: BYD blade battery, GAC magazine battery, and Lantu car's "amber" and "mica" battery system. In view of the pain point of battery safety, Great Wall Motor has also publicized its "Dayu battery" technology, which officials say is based on the concept of "Dayu flood control and turning congestion into sparse". Dayu battery technology can never catch fire and never explode in the normal life cycle of the battery.

At the end of June this year, Great Wall officially released Dayu battery to the outside world. on September 24, Great Wall held a taste conference on Dayu battery technology, which interpreted the battery technology for the first time, and said that more than 60 patents on Dayu battery technology would be open to the whole society free of charge. "never fire, never explode." This is the promise given by the Great Wall Dayu battery. It is understood that Dayu battery technology has eight core design concepts, including heat source isolation, two-way commutation, heat flow distribution, directional explosion disposal, high temperature insulation, automatic fire extinguishing, positive pressure oxygen resistance, and intelligent cooling. Specifically, different from the current mainstream strategy of rapid fire extinguishing and isolating runaway modules, Dayu battery technology uses a variety of technical means to deal with runaway energy and quickly cool down and eliminate it in the form of smoke, with a temperature lower than 100℃, so as to ensure that "never fire, never explode". Cao Yongqiang, director of electric battery design for Great Wall, said that Dayu battery technology will be patented free of charge and will be fully applied to Great Wall's new energy series models in 2022. The first project is the first model of the salon brand.

Judging from the official release of Dayu battery technology by Great Wall Automobile, it is enough to see that Great Wall Automobile is accelerating the development of the company's new energy vehicles. In June this year, Great Wall unveiled its 2025 strategy, saying that by 2025, Great Wall plans to achieve its annual global sales target of 4 million vehicles, 80 per cent of which will be new energy vehicles, with revenue exceeding 600 billion yuan. To achieve this goal, Great Wall Motor will invest a total of 100 billion yuan in research and development in the next five years to ensure technological leadership. According to relevant data, Great Wall sold 12770 new energy vehicles in September, with a cumulative sales of 84731 from January to September.

In addition, according to the analysis of the causes of fire of new energy vehicles in 2020, the proportion of vehicle fires caused by battery problems is 32.97%. It is not difficult to see that battery problems are the first major cause of new energy vehicles catching fire. If the Dayu battery technology officially promoted by Great Wall can ensure that it will never catch fire and never explode, then this technology will also be a major step forward for the development of new energy vehicles. However, some netizens said that the use of the word Yongzi was a bit hasty, and the words could not be absolutely said.

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