There are three major problems with electric vehicle power batteries

The State Council executive meeting emphasized the support for R&D of power batteries and fuel cell vehicles, and the pilot demonstration of intelligent networked vehicles. At the same time, it explicitly required the enterprises and institutions to implement the requirements for new energy vehicles in vehicle renewal, and increase the number of new and updated buses. The assessment of the proportion of new energy vehicles in the vehicle shall be deducted from fuel and operating subsidies for non-compliance areas; local governments shall not impose restrictions or purchase restrictions on new energy vehicles, and those that have been implemented shall be cancelled.

As China's economy enters a new normal, China's requirements for environmental protection have increased. The convening of the State Council executive meeting highlights China's determination to develop new energy vehicles. New energy vehicles are powered by the power of power batteries, and there is almost no exhaust gas. It is obvious that new energy vehicles are the best choice for environmental protection. The power battery is one of the most core components of the new energy vehicle, and it is also the part with the highest technical threshold and the most profit. The mainstream of power battery is lithium battery. In 2014, the industrial scale of China's lithium battery has reached 71.5 billion yuan, up nearly 15% year-on-year, while the shipment of lithium battery has also increased by nearly 11%, about 5.28 billion. Although China's power battery has a large increase in sales volume and scale, there is still a certain gap compared with foreign batteries, and the three major problems need to be solved in the future.

The gap between production technology and production costs is obvious

Compared with Japanese and Korean companies, China's battery companies are relatively backward in terms of automation and research and development capabilities, which leads to a weak position in China's battery production technology and production costs. In the first half of this year, the output of new energy vehicles reached 76,000, a year-on-year increase of 2.5 times. A large number of gaps in the supporting power batteries of new energy vehicles, coupled with low barriers in the power battery industry, have led to a large number of battery companies with low technical content to put into production, which ultimately led to a shortage of domestic low-end battery capacity and a gap in the high-end battery market. In addition, the lower energy density of the battery with lower technical content affects the cruising range of new energy vehicles. If the battery of the same capacity is produced, the weight of the battery in China will exceed the weight of the Japanese and Korean batteries, which will affect the new energy vehicles lightweight development.

Due to the lack of independent research and development products in China's battery companies, most of them are mainly imported, which has increased the production cost of batteries to some extent. On the one hand, China faces many challenges in battery research and development. Compared with Japanese and Korean companies, China's battery companies lack core intellectual property rights in advanced materials, battery systems, batteries and system design and manufacturing. They also rely on foreign products for import of key components. The price of parts and components is subject to foreign companies; on the other hand, there are a large number of power battery companies in China, but only a few enterprises can really enter the supply chain of the automakers, which leads to a large cost of large-scale battery manufacturing and production increase.

Battery standard is not uniform

There is no uniform production standard in China's power battery industry, which makes the battery lack of versatility and cannot achieve standardization and large-scale production. This invisibly increases the production cost of the battery and increases the workload of battery design. What is most worrying is that before the battery standard is not implemented, there are differences in the charging and discharging performance indicators of each battery. As a charging device for electric vehicles, there are already a large number of entrants, which will lead to multiple charging piles and customized features. If the new battery standard is released in the future, there will be many charging pile enterprise products that are subject to market restrictions, which will also result in a certain waste of resources.

The diversification of rechargeable batteries has caused some battery manufacturers to have a monopoly position, which makes the entire battery production industry lack effective competition. Some battery manufacturers that produce special sizes maintain a one-to-one supply with the car companies for a long time, which makes it impossible for car companies to flexibly change suppliers and reduce procurement costs. In addition, if there is a unified standard for batteries in China, then China will cite foreign battery standards, which means that the entire battery industry chain in China will be tilted abroad, and it will be subject to foreign factors in equipment manufacturing, battery assembly, and battery packaging. Standard, become a follower who lacks the right to speak.

Security has been repeatedly questioned

As of the end of July this year, three new energy bus fires have occurred, causing certain casualties. In the period of rapid development of new energy vehicles, the battery quality and safety of new energy vehicles have received great attention from the society. On the one hand, electric vehicles, like fuel vehicles, have to withstand higher speeds, especially when electric vehicles collide, which may cause the positive and negative materials of the battery to break through the diaphragm, and the energy is quickly recharged to the battery when braking. The ultra-high-speed current may cause a short circuit in the battery, which will cause the electric vehicle to catch fire or even explode. On the other hand, the company neglects the safety of the battery in order to save costs, and the safety design of the battery is another important cause of frequent accidents. The safety of the battery will become the key factor in the development of the industry. Only by ensuring the safety of the power battery can we begin to expand the use and fixed use of the electric vehicle and ultimately promote the expansion of the new energy vehicle market.

The page contains the contents of the machine translation.