Nissan patented new lithium-ion battery technologyApril 16, 2020
The Japanese automaker has announced the development of a technology for fully resin batteries with a bipolar electrode structure, which is an elementary technology for modern lithium-ion batteries.
Nissan began researching and developing lithium-ion batteries in the early 1990s, and in 1997 launched the world’s first commercial lithium-ion electric vehicle battery with the Prairie JOY EV. Since then, Nissan has continued to research elemental technologies that will lead to technological innovations in car batteries.
The “completely resin battery with a bipolar electrode structure” licensed this time received a number of features, among which: the charging capacity per volume increases, the cell safety is further enhanced by replacing the electrolyte with resin. It was also possible to significantly reduce the cost of the battery due to a simpler structure.
All rights to develop and produce innovative batteries have been transferred to APB, which plans to build a battery factory in Japan.
“Nissan does not limit in-house technology, but actively promotes the effective use of its own products outside the company. Part of this effort is the provision of advanced lithium-ion battery technology from APB Co., Ltd. The widespread use of this technology will help the UN Sustainable Development Goals. We are confident that this will contribute to creating a sustainable low-carbon society supported by the Japanese government, ”said Hideki Kimata, Nissan Corporate Strategy Director.
The polymer battery, which has the structure of a bipolar electrode, has received a resin as a conventional liquid electrolyte and metal electrode. This is an elemental technology that allows you to build a battery pack with a bipolar structure by forming the front and back surfaces of the battery cell using a polymer current collector, which simultaneously performs the functions of “positive” and “negative” electrodes. The structure is simplified, the cost is reduced, the charge capacity per volume is increased, and the electrolyte is replaced with resin, which increases safety.
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