Look at battery trends on a global scale

At present, research on batteries for pure electric vehicles in Japan is mainly focused on lithium batteries, followed by lead-acid batteries, nickel-hydrogen batteries and sodium batteries.　　 Judging from the total number of patent applications worldwide, Japan has the largest number of patent applications related to battery and management systems for pure electric vehicles. Judging from the number of patent applications in Japan, among the 6,782 patent applications related to pure electric vehicle batteries and their management systems, more than 90% of the patent applications came from Japanese applicants. Whether it is from the perspective of the number of patent applications in the world or from the perspective of the share of Japanese applicants in Japanese patent applications, Japan is the strongest in the field of battery and management systems for pure electric vehicles, and controls most of them. patented technology.　　 At present, the research on batteries for pure electric vehicles in Germany is mainly focused on lithium batteries, followed by lead-acid batteries, nickel-metal hydride batteries, sodium batteries and air batteries. From the perspective of the total number of patent applications worldwide, as of June 2010, the number of patent applications related to battery and management systems for pure electric vehicles in Germany ranked sixth in the world, which is very different from the number of patents in Japan, which ranks first. Large, accounting for only 11% of Japan’s applications. From the perspective of the number of patent applications in Germany, the patents held by German applicants account for about 43% of the total, which is higher than that of Japan, which ranks second.　　 On a global scale, Germany's technical strength in the field of battery 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 more battery patents than Japan.
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