MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202617041275 A) filed by Ningde Amperex Technology Limited on March 31, 2026, for Secondary Battery And Electric Device.
Inventors include Chen, Xiao; Liu, Ao; Wu, Fei; and Qu, Changming.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: A secondary battery and an electric device. An electrode assembly (10) of the secondary battery comprises a positive electrode sheet (100), a separator (200), a negative electrode sheet (300) and a first-type adhesive tape (400) that are stacked, wherein the first-type adhesive tape (400) comprises a substrate layer (401), the thickness H of the substrate layer (401) satisfying 8 µm=H=20 µm, and the porosity f of the substrate layer (401) satisfying 20%=f=60%; the positive electrode sheet (100) comprises a positive electrode tab (140), and a positive current collector (110), a first positive active material layer (120) and a second positive active material layer (130) that are stacked; the first positive active material layer (120) is provided with a first recess (121), and the positive electrode tab (140) is accommodated in the first recess (121); and the first-type adhesive tape (400) comprises a first adhesive tape (410), the first adhesive tape (410) being attached to the first positive active material layer (120) and covering the first recess (121) and the positive electrode tab (140). The substrate layer (401) allows metal cations to pass therethrough, such that the part of the first positive active material layer (120) covered by the first-type adhesive tape (400) can also absorb and release the metal cations, thereby increasing the effective area of the first positive active material layer (120) and improving the discharge capacity of the secondary battery.
Disclaimer: Curated by HT Syndication.
