Mazda Patent for Electric Vehicle Battery Mounting Structure
Summary
Mazda Motor Corporation has filed a patent application (US20260084510A1) for an electric vehicle battery mounting structure. The application details a specific design for battery modules that aims to optimize rigidity and mass distribution for improved performance and dispersion characteristics.
What changed
This document is a USPTO patent application (US20260084510A1) filed by Mazda Motor Corporation for a battery mounting structure for electric vehicles. The application, published on March 26, 2026, outlines a design for battery modules that incorporates specific rigidity (k) and mass (m) parameters for fixing portions and cells. It defines mathematical ranges for kmin and kmax based on the loss factor (tan δ) and mass, aiming to achieve a dispersion D of k/m ratios between 0.2 and 550, with a reference k/m value.
While this is a patent application and not a regulation imposing direct compliance obligations, it signifies technological innovation in the electric vehicle sector. Manufacturers in the automotive and battery technology industries, particularly those involved in EV battery design and manufacturing, should be aware of this filing as it may influence future industry standards or competitive landscapes. No immediate compliance actions are required for regulated entities based on this patent application.
Source document (simplified)
BATTERY MOUNTING STRUCTURE FOR ELECTRIC VEHICLE AND BATTERY MODULE
Application US20260084510A1 Kind: A1 Mar 26, 2026
Assignee
MAZDA MOTOR CORPORATION
Inventors
Kohya NAKAGAWA, Chikara KAWAMURA
Abstract
A battery module includes a plurality of cells and fixing portions, each fixing portion fixes a corresponding cell. With support rigidity k of the fixing portion and mass m of the cell, k/m of two or more sets of the cell and the fixing portion is reference k/m. When a value of tan δ as a loss factor of the fixing portion is x, a minimum value kmin of k is kmin=5.184×109(1/x)2(1/m)3, a maximum value kmax of k is kmax=482.2531 x2m5, and kmin<kmax, k is within a range of kmin≤k≤kmax. By using the maximum k/m that is greater than the reference k/m and the minimum k/m that is less than the reference k/m, the dispersion D of (the reference k/m)/(the reference k/m), (the maximum k/m)/(the reference k/m), and (the minimum k/m)/(the reference k/m) satisfies 0.2<D<550.
CPC Classifications
B60K 1/04 H01M 50/211 H01M 50/238 H01M 50/244 H01M 50/249 H01M 50/289
Filing Date
2025-08-22
Application No.
19307213
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