Chinanews.com, Haikou, September 18th, title: New energy vehicle "heart" change: let the car run farther, safer and more energy-saving

  Reporter Wang Ziqian

  China's new energy automobile industry is ushering in rapid growth.

Data show that in August the sales of new energy vehicles exceeded 300,000 for the first time, and the penetration rate increased to 17.8%.

But at the same time, industry pain points such as anxiety about battery life, winter "squatting", and vehicle spontaneous combustion are also in urgent need of breakthroughs. These are all directly related to the "heart" power battery of new energy vehicles.

  At the just-concluded 2021 World New Energy Vehicles Conference, the technical performance path of power batteries has become a focus topic.

Cracking battery life anxiety: how to go further?

  The battery life problem has been plagued by new energy car owners. How to make the car go further?

  In the past ten years, China’s lithium-ion battery technology has undergone three generations of development, from lithium iron phosphate batteries to ternary polymer lithium batteries, and the energy density has been greatly improved.

Xu Xingwu, executive vice president of the General Engineering Research Institute of Hefei Guoxuan High-tech Power Energy Co., Ltd., pointed out that if the energy density of lithium iron phosphate batteries continues to be increased, passenger cars will generally support a cruising range of more than 500 kilometers.

  The increase in battery capacity will have an impact on the pattern of the new energy vehicle market.

Zhang Xiaocong, general manager of the marketing center of Ruipu Energy Co., Ltd., analyzes that China's new energy vehicle sales mainly rely on high-end and low-end driving, and the increase in battery life may activate the mid-end market. By then, the penetration rate of the new energy vehicle market is expected to increase significantly.

  However, the industry pointed out that the advancement of lithium battery technology is close to the ceiling, and it is necessary to "change lanes" to increase battery capacity.

It is reported that the ongoing all-solid-state battery research will promote the revolution of energy materials and power batteries.

  Ningde Times New Energy Technology Co., Ltd. R&D President Ouyang Chuying said that the advancement of power battery technology requires investment in scientific and technological innovation. In the first half of this year, the R&D investment in the first half of this year increased by 115% compared with the same period last year. The company has launched a new solution for sodium-ion batteries.

  Before there is a breakthrough in battery life, fast charging has become another way of thinking.

Li Bin, the founder, chairman and CEO of NIO, introduced that the company has accelerated the deployment of power replacement stations this year, and 445 power replacement stations have been put into operation so far.

Facing spontaneous combustion and "squatting nest": how to be safer and more reliable?

  In addition to battery life, new energy vehicles have to face two major doubts, spontaneous combustion accidents and fear of the cold.

  "Battery safety is the biggest uncertainty factor that affects the development of new energy vehicles, and the decline in low-temperature capacity affects regional promotion." Wang Jiantao, deputy general manager of Guolian Automobile Power Battery Research Institute Co., Ltd., said that the company has improved through safe materials and technology. Establish battery safety system protection to reduce the degradation of charge and discharge performance.

  During the forum, many car companies introduced battery safety technology.

For example, the newly developed Dayu battery recommended by Great Wall Motors will be fully tested at the end of the year and will be ready for mass production next year.

BYD Company introduced that many international vehicle manufacturers are discussing battery cooperation projects with them, and all subsequent BYD pure electric vehicles will be equipped with high-safety blade batteries.

  Cao Bin, general manager of Neusoft Reach Automotive Technology (Shanghai) Co., Ltd., said that the introduction of big data analysis by enterprises can effectively improve the understanding of battery safety, life and user experience. "According to the actual life changes and defect analysis of the car, Battery risk prediction and performance optimization."

Benchmarking the "Dual Carbon" Strategy: How to be more energy-efficient?

  Under the goal of "carbon peak and carbon neutrality", power batteries, as the core components of new energy vehicles, play an important role in reducing carbon emissions.

  "The demand for lithium materials for power batteries has soared, which poses a great challenge to the environment and resource load." Xie Qiu, general manager of the passenger car business of AVIC Lithium Technology Co., Ltd., pointed out that high-efficiency manufacturing technology should be used to reduce resource use.

He also suggested that more rapid charging piles should be deployed to make up for the shortcomings of mileage, reduce the installed capacity of bicycle batteries, and reduce resource requirements.

  Ouyang Chuying introduced that under the background of "dual carbon", the battery energy storage market has a huge space. Actively participating in the function of grid peak and frequency modulation can help build a new power system with new energy as the main body.

In addition, electric vehicles are expected to become distributed energy storage devices in the future.

  The recycling of used power batteries is an important part of the new energy automobile industry.

According to Ai Chong, the fourth-level investigator of the Resource Comprehensive Utilization Division of the Energy Conservation and Comprehensive Utilization Department of the Ministry of Industry and Information Technology, China has initially established a recycling network covering 325 prefecture-level administrative regions, and the cascade of used power batteries and the recycling industry are developing rapidly.

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