on November 26th, it was reported that the semi-solid battery with a capacity of 15kWh announced by Weilai Automobile at the beginning of the year was provided by Beijing Weilan New Energy.
In addition, according to the enterprise investigation information, Zeng Shuxiang, senior vice president of Weilai, is also a director of Weilan New Energy. The above report quoted sources as saying that Weilai has tilted a lot of engineering resources to Weilan New Energy to realize the timely delivery of semi-solid batteries.
This is the first time that Weilai Automobile released the 15kWh solid-state battery pack in January this year, revealing which battery supplier it came from. Previously, there were different opinions about the suppliers of Weilai 15kWh semi-solid battery, including Contemporary Amperex Technology Co., Limited, Guoxuan Hi-Tech and Qingtao Energy.
However, the news reported above has not been confirmed by Weilai and Weilan New Energy, so this * * * may linger for some time, even for a year or so. Because, according to the planning of Weilai Automobile, the 15kWh semi-solid battery will be installed on the ET7 model in the fourth quarter of 222, which can help the model to last more than 1, kilometers.
It is worth noting that the report said that "Weilai's 15-degree battery pack not only has a semi-solid solution, but also has ultra-high nickel technology, and the latter is probably from Contemporary Amperex Technology Co., Limited." This statement has cast a layer of fog on this news. First of all, the possibility of Contemporary Amperex Technology Co., Limited's ultra-high nickel battery technology providing Weilai and Weilan is debatable; Secondly, the semi-solid battery pack should be a whole, and the battery cell contains a positive electrode, a negative electrode, a solid-liquid mixed electrolyte, a separator, etc. Therefore, it is unlikely that the ultra-high nickel technology will be provided by enterprises other than Weilan New Energy.
at that time, when Weilai released this product, it was introduced that the anode of 15kWh semi-solid battery used nano-scale coated ultra-high nickel anode, the cathode used inorganic pre-lithiated silicon-carbon anode, and the electrolyte used in-situ solidified solid-liquid electrolyte. The energy density reaches 36Wh/kg, and the capacity reaches 15kWh, which involves a number of core and cutting-edge technologies, and it is more likely to come from enterprises with strong technical strength.
of course, if the news in this report is true, it shows that Azure New Energy has a well-thought-out plan for these technologies.
In fact, in July this year, Li Yongwei, deputy general manager of Weilan New Energy, revealed in an interview with the media that at present, Weilan New Energy is building a large-scale solid-liquid hybrid solid-state power battery production line with a capacity of 2GWh, which mainly produces 35-36Wh/kg power batteries for new energy vehicles.
if the capacity of 15kWh battery pack is calculated, the 2GWh production line is expected to meet the requirements of 13, vehicles.
According to Li Yongwei, the hybrid solid-liquid solid-state battery mass-produced by Weilan New Energy is not much different from the current liquid battery in the anode and cathode material system. It is mainly based on modified high nickel ternary and silicon-based anode materials plus mixed solid-liquid solid electrolyte, ion conductive film and other material systems.
it should be pointed out that the suppliers of Weilai 15kWh semi-solid battery may come from several battery companies.
first of all, it is its existing battery supplier-Contemporary Amperex Technology Co., Limited. As a leading power battery, Contemporary Amperex Technology Co., Limited has been at the forefront of the industry in ultra-high nickel, silicon anode and other technologies, with strong R&D strength, strong engineering ability and high possibility of mass production. However, Contemporary Amperex Technology Co., Limited never mentioned or disclosed its semi-solid battery from beginning to end, especially the information about some key indicators of the first semi-solid battery released by Weilai in terms of energy density of 36Wh/kg, battery life of 1km and battery pack capacity of 15kWh. Therefore, this piece is more difficult to compare and verify.
another company that is more likely is guoxuan hi-tech.
Recently, Li Zhen, chairman of Guoxuan Hi-Tech, publicly stated that the semi-solid battery provided by the company for a high-end pure electric vehicle in China has achieved a cruising range of over 1, kilometers, which is twice that of its first-generation model. However, Li Zhen did not disclose the information of supporting car companies and models.
In October this year, Xu Xingwu, executive vice president of Guoxuan Hi-Tech Engineering Research Institute, said in an interview with the media that Guoxuan Hi-Tech has laid out a safer semi-solid battery. "The concept is very simple, you can use high-nickel 9 series or silicon negative electrode. By the end of the year, we will achieve a semi-solid battery of 36Wh/kg, which is originally a package, with 75 kWh of iron and lithium, 1 kWh of ternary, and the semi-solid battery is.
In addition, it was learned from Guoxuan Hi-Tech that the high-nickel ternary battery with energy density of 32Wh/kg started mass production in Guoxuan Hi-Tech, which indicated that Guoxuan Hi-Tech was mature in the technology of high-nickel ternary materials. At the beginning of this year, Guoxuan Hi-Tech released a lithium iron phosphate battery with an energy density of 21Wh/kg. In order to achieve this energy density, Guoxuan Hi-Tech used silicon anode and lithium-supplementing technology on the anode material, and this battery will be mass-produced in Guoxuan Hi-Tech at the end of this year.
high nickel, silicon anode, lithium supplement ... Through the introduction of Guoxuan Hi-Tech, we can see that these technologies are mature or have the conditions for mass production, and the combined application of these technologies may be the basis of its 36Wh/kg semi-solid battery.
In addition, the relevant person in charge of Guoxuan Hi-Tech revealed in the column "New Business Geography of Automobile" that the company's semi-solid battery concept uses high nickel as the anode, silicon as the cathode, solid-liquid mixed electrolyte in the middle, and a separator at the same time. This semi-solid battery is compatible with existing processes and technologies. "From the perspective of promotion, our choice is correct. Our original research and development goal is to achieve industrialization in 225, but now according to Weilai.
Of course, the above expression can be interpreted in two ways: one is that in order to realize the rapid industrialization of this technology and keep up with the speed of friendly merchants, Guoxuan Hi-Tech will also be mass-produced in small batches in 222 and industrialized on a large scale in 223; Another interpretation may be to meet Wei Lai's needs. Of course, these are all my guesses, and Guoxuan Hi-Tech has not responded to the related contact with Weilai in semi-solid batteries.
However, whether it is Weilan New Energy, Guoxuan Hi-Tech, Contemporary Amperex Technology Co., Limited or other enterprises, the update and promotion of relevant information indicate that the industry is advancing rapidly in the industrialization of semi-solid batteries.