Overview of the global distribution map of automotive 18650 battery rechargeabletechnology patents

　　The 18650 battery rechargeableis the only energy source for pure electric vehicles. In addition to supplying the electrical energy required to drive the vehicle, it is also the working power source for various auxiliary devices on the vehicle. Various performance indicators of the 18650 battery rechargeablelargely determine the driving performance of the vehicle, such as the driving range and acceleration or climbing performance of pure electric vehicles. Therefore, countries around the world regard electric vehicle batteries as a research and development focus and provide strong policy and financial support.

　　Since Propulsion Batteries Limited applied for the first pure electric vehicle 18650 battery rechargeablepatent application US3928080 in 1970, new patent applications have been submitted almost every year. Especially after 1991, patent applications related to pure electric vehicle batteries have doubled compared to before. .

　　Japan: At present, the research on batteries for pure electric vehicles in Japan mainly focuses on lithium batteries, followed by lead-acid batteries, nickel-metal hydride batteries and sodium batteries. Judging from the total number of patent applications worldwide, Japan has the largest number of patent applications related to batteries and management systems for pure electric vehicles. Judging from the number of patent applications in Japan, among the 6,782 patent applications related to batteries and management systems for pure electric vehicles, more than 90% of the patent applications came from Japanese applicants. Whether from the perspective of the number of patent applications in the world or the share of Japanese applicants in Japanese patent applications, Japan is the strongest player in the field of batteries and management systems for pure electric vehicles, controlling most of them. patented technology.

　　United States: As the world's largest automobile producer and consumer, the United States has been an early adopter of electric vehicle technology research and development. At present, research on batteries for pure electric vehicles in the United States is mainly focused on lithium batteries. The number of patents related to lithium batteries accounts for more than 70% of the number of power 18650 battery rechargeablepatents, followed by lead-acid batteries, nickel-metal hydride batteries, air batteries and sodium batteries. Judging from the total number of patent applications worldwide, as of June 2010, the United States ranked second after Japan in the number of patent applications related to batteries and management systems for pure electric vehicles. Judging from the number of domestic patent applications in the United States, among patent applications related to pure electric vehicle batteries and their management systems, patent applications from Japanese applicants account for the most, accounting for nearly 60% of the total, while patent applications from American applicants The number is second only to Japan.

　　Germany: At present, the research on batteries for pure electric vehicles in Germany mainly focuses on lithium batteries, followed by lead-acid batteries, nickel-hydrogen batteries, sodium batteries and air batteries. Judging from the total number of patent applications worldwide, as of June 2010, Germany ranked sixth in the world in the number of patent applications related to batteries and management systems for pure electric vehicles, which is far behind Japan, which ranks first. Large, accounting for only 11% of Japan’s applications. Judging from the number of patent applications in Germany, patents held by German applicants account for about 43% of the total, which is higher than Japan, which ranks second. From a global perspective, Germany's technical strength in the field of batteries and management systems for pure electric vehicles is far less than that of Japan. However, within its own country, Germany has strong technical advantages and has a higher number of patents than Japan.

　　South Korea: South Korea currently ranks fifth and fourth in the world in automobile production and export volume. South Korea's research on batteries for pure electric vehicles mainly focuses on lithium batteries, and its number of patent applications is much higher than that of nickel-metal hydride batteries, lead-acid batteries and sodium batteries. Judging from the total number of patent applications worldwide, the number of patent applications related to batteries and management systems for pure electric vehicles in South Korea is behind Japan, the United States, China and Europe. Judging from the number of patent applications in South Korea, among patent applications related to pure electric vehicle batteries and their management systems, the largest number of patent applications are from South Korean applicants, with Japanese applicants ranking second, with only Second to South Korea. The number of Korean patent applications in the field of batteries and management systems in these two countries is much higher than that of the third-ranked United States and other countries.

　　China: my country has conducted a large number of research and research on improving the comprehensive technical indicators such as the electrical performance, safety performance and life span of single batteries. At present, the performance of high-power nickel-metal hydride batteries and lithium-ion batteries has been greatly improved. Judging from the total number of patent applications worldwide, China's number of patent applications in the field of pure electric vehicle batteries and their management systems ranks third after Japan and the United States. Judging from the number of patent applications in China, Japan has the largest number of patent applications in my country. Well-known Japanese companies such as Panasonic, Toyota, and Sanyo have a large number of high-quality patents in China. Among domestic enterprises in my country, BYD Auto has outstanding R&D capabilities in the field of electric vehicle 18650 battery rechargeabletechnology. It mainly focuses on lithium-ion batteries and polymer lithium-ion batteries, and attaches great importance to 18650 battery rechargeablestructure and manufacturing methods. BYD Auto applied for the first Chinese patent for batteries and management systems for pure electric vehicles as early as 2003. In 2003, it began to develop overseas market patents for batteries and management systems for pure electric vehicles. It was the first overseas application The patent is in the United States.

　　In the next few years, Japan will be at the forefront of the United States, Europe and other countries in the competition for intellectual property rights in the field of electric vehicles. However, because the electric vehicle industry is in a period of rapid growth, many key technologies have yet to have mature solutions. The United States and Europe, relying on their strong basic research advantages, are very likely to be the first to make breakthrough progress in some key technologies and regain competition. Advantage. In addition, rising stars in the automobile industry such as South Korea and China continue to increase investment in the research and development of electric vehicles. It can be expected that the competitive landscape of electric vehicles will be more complex in the future.

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