MUMBAI, India, July 5 -- Intellectual Property India has published a patent application (202517056052 A) filed by Panasonic Energy Co. Ltd., Osaka, Japan, on June 10, for 'cylindrical battery.'
Inventor(s) include Sasa Tatsuro; Ishiguro Tasuku; Matsumoto Katsumasa; Tsuda Takao; and Shima Kaho.
The application for the patent was published on July 4, under issue no. 27/2025.
According to the abstract released by the Intellectual Property India: "In a cylindrical battery that is an example of an embodiment of the present invention, a negative electrode (12) has a non-facing portion (43) that is wound at a length of 0.6-0.9 laps at a winding-start side of an electrode body (14), and an exposed core portion (42). A negative electrode lead (21) is bonded to the exposed core portion (42) so that a winding-termination-side end portion of said lead is positioned in a range in which the angle from a positive electrode start end (11x) to the winding-start side relative to the winding center (Z) of the electrode body (14) is 60-180 degrees. The ratio (D2/D1) of a maximum value (D2) relative to a minimum value (D1) of the inter-core distance between the non-facing portion (43) and the exposed core portion (42) is 1.5 or greater in the non-facing portion (43) within a range over which the angle from a position that corresponds to the positive electrode start end (11x) to the winding-start side relative to the winding center (Z) of the electrode body (14)."
The patent application was internationally filed on Dec. 25, 2023, under International application No.PCT/JP2023/046358.
Disclaimer: Curated by HT Syndication.
