BATTERY MOUNTING STRUCTURE FOR ELECTRIC VEHICLE AND BATTERY MODULE

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