Energizer has patented a rechargeable hearing aid battery with a unique design, including a two-part casing and a grommet to insulate and connect components. The button cell battery design ensures efficient energy transfer and sealing between inner and outer casings for improved performance. GlobalData’s report on Energizer gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Energizer, was a key innovation area identified from patents. Energizer's grant share as of May 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.
Button cell battery with grommet for hearing aid
A recently granted patent (Publication Number: US11949060B2) discloses a button cell battery design that includes a casing with an inner casing and an outer casing defining an internal volume. The core of the battery consists of a first electrode, a second electrode, and at least one separator layer. A unique feature of this design is the inclusion of a grommet with a rectangular slot opening in the bottom wall, separating the core from the casings. The grommet also includes a sidewall that seals and insulates the inner casing from the outer casing, ensuring efficient battery operation.
Furthermore, the patent details a method for assembling the button cell battery, involving inserting the core into the casings, fitting the inner casing to the outer casing with the grommet in between, and sealing the casings with the grommet sidewall. The method also includes welding the electrodes to a mandrel and winding them in a spiral configuration. This innovative design and assembly process aim to enhance the performance and longevity of button cell batteries by providing effective insulation and sealing between components, ultimately improving overall battery efficiency and safety.
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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.
