Secondary Battery Design with Enhanced Gas Discharge

Researchers at Panasonic Corporation have developed a novel secondary battery design that facilitates easy discharge of gases generated within the electrode group to the outside of the battery. The patented invention, filed under PCT/JP2011/003239, aims to improve battery safety and efficiency. The battery's unique structure features a convex section and an outer periphery section, which are positioned to create a central hole. This design enables the easy discharge of gases, while maintaining the battery's overall integrity.

Key Takeaways:

• The secondary battery features a battery case with a closed end and an open end, housing an electrode group with a central hole.
• The battery is equipped with a safety valve at the open end-side and a convex plate with multiple holes on the outer periphery section and side surface of the convex section.
• The convex plate is arranged inside the battery case, between the electrode group and the closed end, with its outer surface abutting the inner surface of the closed end.
• The battery design is patented under WO/2011/155198 and has been filed under PCT/JP2011/003239.
• The filing date of the patent is December 8, 2011.
• The inventors of the device are Yasui Shunsuke, Nakashima Takuya, Otake Yuji, and Geshi Shinya.

Statistics:

• The battery design features a unique structure with a convex section and an outer periphery section.
• The convex plate has a plurality of holes formed on the outer periphery section and the side surface of the convex section.
• The battery case has a closed end and an open end, housing an electrode group with a central hole.
• The safety valve is positioned at the open end-side of the battery case.
• The convex plate is arranged inside the battery case, between the electrode group and the closed end.

Sources:

• Publication No. WO/2011/155198, World Intellectual Property Organization
• PCT/JP2011/003239, Panasonic Corporation