NEC had 13 patents in batteries during Q1 2024. NEC Corp filed a patent for a secondary battery with improved insulation between electrodes and reduced internal short circuit risk. The battery includes positive and negative electrodes with insulating layers containing nonconductive particles to enhance safety and performance. GlobalData’s report on NEC gives a 360-degree view of the company including its patenting strategy. Buy the report here.

NEC grant share with batteries as a theme is 76% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Secondary battery and method for manufacturing the same (Patent ID: US20240047692A1)

The patent filed by NEC Corp. describes a secondary battery with improved insulation between electrodes to prevent internal short circuits. The battery includes positive and negative electrodes, each with a current collector, an active material layer, and an insulating layer containing nonconductive particles. The insulating layer is porous, with a specific porosity index to enhance safety and performance. Additionally, the method for manufacturing the battery involves applying an insulating layer slurry with nonconductive particles to the positive electrode to achieve the desired insulation properties.

The claims of the patent detail the specific features of the secondary battery, such as the shape and orientation of the nonconductive particles in the insulating layer. The method for manufacturing the battery includes steps for preparing the positive and negative electrodes, as well as the application of the insulating layer slurry to the positive electrode. Furthermore, the inclusion of a separator with specific heat shrinkage and Gurley value characteristics between the electrodes is highlighted to ensure optimal battery performance and safety. Overall, the patent aims to enhance the insulation properties of secondary batteries to minimize the risk of internal short circuits and improve overall efficiency.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.