Panasonic starts mass production of 4680 battery cells
Panasonic Energy is starting mass production of a new format of lithium ion battery cell, the 4680.
The cylindrical 4680 battery cell measures 46 mm in diameter by 80 mm high and has five times the capacity of the 2170 cell. This not only extends the driving range of EVs. This also reduces the number of cells required for the same battery pack capacity.
This format is being adopted by Tesla for its semi truck, which makes them at its battery gigafactory in Nevada. LG and Samsung SDI is also starting production of 4680 format cells.
The Panasonic Wakayama factory in western Japan relaunched as the primary production facility for the cells and will serve as the mother factory for the new cells. Mass production is set to start after the final evaluation.
First fast charging silicon battery in 4680 format
The manufacturing process of the 4680, with its larger capacity per cell, requires more advanced technology and expertise. Panasonic Energy has pioneered a mass production method for high-performance 4680 cells, and the Wakayama factory will act as the mother factory for the production of 4680 cells and will serve as a demonstration hub for new products and methods.
The factory will play a key role enhancing product quality and competitiveness, with processes newly trialled there set to be implemented globally in other factories. Panasonic is also working on a version with a silicon anode for significantly higher energy density.
By March 2025, it is expected that roughly 400 staff will be involved in the development and production of next-generation batteries at the Wakayama factory. It is also aiming for virtually zero CO2 emissions during its production processes.
“This milestone is the result of years of expertise in cylindrical lithium-ion battery manufacturing,” said Kazuo Tadanobu, President and Executive Officer at Panasonic Energy. pro“I’m confident it will significantly revolutionize the battery and EV industry. As we add the 4680 cell to our lineup, we’ll cater to a broader range of needs, further promoting the use of EVs and advancing our mission of fostering a sustainable society.”
www.panasonic.com/global/energy
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