MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617071102 A) filed by Ningde Amperex Technology Limited on June 08, 2026, for Secondary Battery And Electric Device.
Inventor includes He, Jun.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: A secondary battery and an electric device. The secondary battery comprises an electrode assembly and an electrolyte, wherein the electrode assembly comprises a positive electrode sheet, a negative electrode sheet and a separator; the positive electrode sheet comprises a positive-electrode active material layer, and the positive-electrode active material layer comprises a positive-electrode active material; the negative electrode sheet comprises a negative-electrode active material layer, and the negative-electrode active material layer comprises a negative-electrode active material; the coating weight of the positive-electrode active material layer is Wz, the coating weight of the negative-electrode active material layer is Wf, and Wz and Wf satisfy: 1.6Wf=Wz=2.2Wf, and 3.25 mg/cm2=Wf=5.84 mg/cm2; the Dv99 of the positive-electrode active material is 27 µm to 33 µm, and the Dv99 of the negative- electrode active material is 23 µm to 28 µm; and the electrolyte comprises an organic solvent, a lithium salt and a nitrile additive, the organic solvent comprises a chain carboxylic ester, and based on the mass of the electrolyte, the mass percentage content of the chain carboxylic ester is 6% to 56% and the mass percentage content of the nitrile additive is 0.01% to 10%. The secondary battery has good dynamic performance during cycling and good high-temperature stability.
Disclaimer: Curated by HT Syndication.
