Progress in industrialization of solid-state lithium batteries -Lithium - Ion Battery Equipment
Currently, the new energy vehicle market has higher requirements and expectations for reducing the cost of power lithium battery systems and improving electrical performance and safety and reliability. Power lithium battery and vehicle companies must accelerate technological innovation to create more possibilities. Due to its excellent safety performance, energy density, cycle life, operating temperature range and other aspects, solid-state lithium batteries are considered to be the next-generation battery products most likely to achieve industrial application after the current liquid lithium batteries. The "New Energy Vehicle Industry Development Plan (2021-2035)" clearly requires "accelerating the research and development and industrialization of all-solid-state power lithium battery technology." The development goal of the "Energy-saving and New Energy Vehicle Technology Roadmap 2.0" for solid-state batteries in 2035 is to significantly increase the energy density and achieve practical and large-scale applications. In 2025, the mass energy density of solid-state batteries will be >400W·h/kg, and the cycle time will be >1,000 times. The safety and cycle performance of R&D products will be close to the application indicators; in 2030, the mass energy density of solid-state batteries will be >500W·h/kg, and the cycle time will be >1,500 times, and it will be industrialized. Mature application; in 2035, the mass energy density of solid-state batteries will be >700W·h/kg, the cycle time will be >1,500 times, and it will be mature in industrial applications. Against this background, various battery companies are committed to promoting the research and development and industrialization exploration of solid-state lithium batteries, and vehicle manufacturing companies are simultaneously conducting intensive research on solid-state lithium batteries. The implementation schedule of solid-state lithium batteries from representative domestic and foreign companies is shown in Table 1.
International mainstream car companies such as Toyota, BMW, Honda, Nissan, Hyundai, Volkswagen, and General Motors are accelerating the research and development and industrialization layout of solid-state lithium batteries. Toyota will launch solid-state lithium battery technology in 2021 and also launch a prototype car equipped with solid-state lithium battery. This solid-state lithium battery has an advantage in charging speed. It only takes 15 minutes to charge from zero. Performance experiments will be conducted in 2021 and 2028. Carry out loading. In 2020, Volkswagen invested an additional US$200 million in QuantumScape to stand out in the electric vehicle market by developing solid-state lithium batteries with higher energy density, smaller size, low temperature resistance and fast charging. It plans to build a solid-state production line for electric vehicles in 2025. Lithium battery production line. Car companies such as BMW, Ford, and Hyundai have successively invested in SolidPower in recent years. In October 2020, SolidPower announced the production and delivery of its first-generation 2A·h all-solid-state lithium battery with an energy density of 320W·h/kg. SolidPower has conducted product verification with strategic partners and confirmed the possibility of large-scale mass production. The product is ready to be launched on the market in 2021 and applied to the automotive field in 2026. A new solid-state lithium battery technology announced by Samsung Advanced Institute of Technology (SAIT) in March 2020 is still in the prototype stage, and it is not yet clear when this technology will be used in actual production.
Domestic OEMs are not to be outdone. Among them, BAIC Blue Valley New Energy Technology Co., Ltd. (hereinafter referred to as BAIC Blue Valley) has an even better layout in solid-state lithium batteries. In July 2020, the first solid-state lithium battery prototype vehicle of BAIC Blue Valley, a domestic new energy vehicle company, successfully rolled off the production line and became publicly drivable. The production of the prototype vehicle marked a key step in China's research on solid-state lithium battery vehicle technology. . BAIC Blue Valley initiated a project in 2017 to research solid-state lithium batteries and vehicle-mounted matching technologies, and established cooperative relationships with a number of domestic and foreign solid-state lithium battery companies to jointly carry out technical exchanges and overcome difficulties in the development of solid-state lithium batteries. After multiple rounds of method iterations and repeated testing, the vehicle was finally debugged and rolled off the production line, achieving a breakthrough from concept to prototype, from laboratory to trial production line, and from bench testing to vehicle installation. At the same time, based on the characteristics of solid-state lithium batteries, safety test standards for solid-state lithium batteries have been formulated, such as safety test items such as acupuncture, extreme heating, extreme overcharge, and extreme short circuit. Recently, BAIC Blue Valley solid-state lithium battery vehicles have completed 15,000km of simulated user road testing, and the testing covered multiple scenarios in which users actually use the vehicle. In January 2021, BAIC Blue Valley solid-state battery prototype vehicle completed user extreme working conditions verification in extremely cold environments.(Lithium - Ion Battery Equipment)
At the power lithium battery company level, battery companies such as Samsung SDI, SolidPower, and QuantumScape continue to make new breakthroughs in the field of solid-state lithium batteries. Qingtao Energy Development Co., Ltd., Beijing Weilan New Energy Technology Co., Ltd., Huineng Technology Co., Ltd., Zhejiang Feng Domestic power lithium battery companies such as Lithium New Energy Technology Co., Ltd. are accelerating the technological development of solid-state lithium batteries and their key materials. Among them, companies with leading technologies have completed the construction of solid-state lithium battery production lines, and some have even been trial-produced. Power lithium batteries at home and abroad Battery companies are working together to promote the early mass production and application of solid-state lithium batteries.
The advantages of solid-state lithium batteries in terms of technology and performance are very likely to become the mainstream choice of electric vehicle companies after liquid batteries. However, because its industrialization conditions are not yet mature, it still faces many difficulties. The industry must work together to solve them and be committed to solid-state lithium batteries. The performance of power lithium battery is improved. Through material system optimization and technological innovation and upgrading, we will continue to develop solid-state lithium battery products with higher safety, higher energy density and better low-temperature performance, thus promoting the industrialization and large-scale application of solid-state lithium batteries.
Based on the fact that solid-state lithium batteries have become the most promising technical direction in the battery field, we should comprehensively consider four factors in the development of solid-state lithium batteries: stable chemical interface between electrolyte and electrode, effective tools for characterization, and sustainability. manufacturing process, and design for recyclability. At present, representative companies have developed solid-state lithium battery test samples, but there are still many problems to be solved before solid-state power lithium batteries can be applied on a large scale. At the basic research level, there are solid-solid interface compatibility, electrochemical side reactions, stress and deformation issues that need to be solved. At the engineering level, breakthroughs must be made in both material development and production processes. At the level of mass production promotion, there are costs, equipment, consistency, etc. that need to be planned in advance. At the vehicle application level, fast charging capability, high and low temperature performance, cycle performance and pulse power all need to be adaptively developed.
Looking forward to the future development trend, from semi-solid lithium batteries to quasi-solid lithium batteries, and finally towards all-solid lithium batteries. With industry optimism and joint efforts from all parties, the solid-state lithium battery industry is expected to develop rapidly as products and technologies continue to mature. The development of solid-state batteries is inseparable from the collaboration of the entire industry chain, including scientific research institutions, battery cell companies, automobile companies, and material and equipment suppliers. It is expected that through the joint efforts of the industry chain, solid-state lithium batteries will become a new technological breakthrough point and a new guarantee for key technologies in the industry.
International mainstream car companies such as Toyota, BMW, Honda, Nissan, Hyundai, Volkswagen, and General Motors are accelerating the research and development and industrialization layout of solid-state lithium batteries. Toyota will launch solid-state lithium battery technology in 2021 and also launch a prototype car equipped with solid-state lithium battery. This solid-state lithium battery has an advantage in charging speed. It only takes 15 minutes to charge from zero. Performance experiments will be conducted in 2021 and 2028. Carry out loading. In 2020, Volkswagen invested an additional US$200 million in QuantumScape to stand out in the electric vehicle market by developing solid-state lithium batteries with higher energy density, smaller size, low temperature resistance and fast charging. It plans to build a solid-state production line for electric vehicles in 2025. Lithium battery production line. Car companies such as BMW, Ford, and Hyundai have successively invested in SolidPower in recent years. In October 2020, SolidPower announced the production and delivery of its first-generation 2A·h all-solid-state lithium battery with an energy density of 320W·h/kg. SolidPower has conducted product verification with strategic partners and confirmed the possibility of large-scale mass production. The product is ready to be launched on the market in 2021 and applied to the automotive field in 2026. A new solid-state lithium battery technology announced by Samsung Advanced Institute of Technology (SAIT) in March 2020 is still in the prototype stage, and it is not yet clear when this technology will be used in actual production.
Domestic OEMs are not to be outdone. Among them, BAIC Blue Valley New Energy Technology Co., Ltd. (hereinafter referred to as BAIC Blue Valley) has an even better layout in solid-state lithium batteries. In July 2020, the first solid-state lithium battery prototype vehicle of BAIC Blue Valley, a domestic new energy vehicle company, successfully rolled off the production line and became publicly drivable. The production of the prototype vehicle marked a key step in China's research on solid-state lithium battery vehicle technology. . BAIC Blue Valley initiated a project in 2017 to research solid-state lithium batteries and vehicle-mounted matching technologies, and established cooperative relationships with a number of domestic and foreign solid-state lithium battery companies to jointly carry out technical exchanges and overcome difficulties in the development of solid-state lithium batteries. After multiple rounds of method iterations and repeated testing, the vehicle was finally debugged and rolled off the production line, achieving a breakthrough from concept to prototype, from laboratory to trial production line, and from bench testing to vehicle installation. At the same time, based on the characteristics of solid-state lithium batteries, safety test standards for solid-state lithium batteries have been formulated, such as safety test items such as acupuncture, extreme heating, extreme overcharge, and extreme short circuit. Recently, BAIC Blue Valley solid-state lithium battery vehicles have completed 15,000km of simulated user road testing, and the testing covered multiple scenarios in which users actually use the vehicle. In January 2021, BAIC Blue Valley solid-state battery prototype vehicle completed user extreme working conditions verification in extremely cold environments.(Lithium - Ion Battery Equipment)
At the power lithium battery company level, battery companies such as Samsung SDI, SolidPower, and QuantumScape continue to make new breakthroughs in the field of solid-state lithium batteries. Qingtao Energy Development Co., Ltd., Beijing Weilan New Energy Technology Co., Ltd., Huineng Technology Co., Ltd., Zhejiang Feng Domestic power lithium battery companies such as Lithium New Energy Technology Co., Ltd. are accelerating the technological development of solid-state lithium batteries and their key materials. Among them, companies with leading technologies have completed the construction of solid-state lithium battery production lines, and some have even been trial-produced. Power lithium batteries at home and abroad Battery companies are working together to promote the early mass production and application of solid-state lithium batteries.
The advantages of solid-state lithium batteries in terms of technology and performance are very likely to become the mainstream choice of electric vehicle companies after liquid batteries. However, because its industrialization conditions are not yet mature, it still faces many difficulties. The industry must work together to solve them and be committed to solid-state lithium batteries. The performance of power lithium battery is improved. Through material system optimization and technological innovation and upgrading, we will continue to develop solid-state lithium battery products with higher safety, higher energy density and better low-temperature performance, thus promoting the industrialization and large-scale application of solid-state lithium batteries.
Based on the fact that solid-state lithium batteries have become the most promising technical direction in the battery field, we should comprehensively consider four factors in the development of solid-state lithium batteries: stable chemical interface between electrolyte and electrode, effective tools for characterization, and sustainability. manufacturing process, and design for recyclability. At present, representative companies have developed solid-state lithium battery test samples, but there are still many problems to be solved before solid-state power lithium batteries can be applied on a large scale. At the basic research level, there are solid-solid interface compatibility, electrochemical side reactions, stress and deformation issues that need to be solved. At the engineering level, breakthroughs must be made in both material development and production processes. At the level of mass production promotion, there are costs, equipment, consistency, etc. that need to be planned in advance. At the vehicle application level, fast charging capability, high and low temperature performance, cycle performance and pulse power all need to be adaptively developed.
Looking forward to the future development trend, from semi-solid lithium batteries to quasi-solid lithium batteries, and finally towards all-solid lithium batteries. With industry optimism and joint efforts from all parties, the solid-state lithium battery industry is expected to develop rapidly as products and technologies continue to mature. The development of solid-state batteries is inseparable from the collaboration of the entire industry chain, including scientific research institutions, battery cell companies, automobile companies, and material and equipment suppliers. It is expected that through the joint efforts of the industry chain, solid-state lithium batteries will become a new technological breakthrough point and a new guarantee for key technologies in the industry.
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