| CPC H01M 50/242 (2021.01) [H01M 10/658 (2015.04); H01M 50/209 (2021.01); H01M 50/289 (2021.01)] | 8 Claims |
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1. A battery, comprising:
a plurality of battery cells stacked in a first direction; and
an isolation assembly comprising a buffer component arranged between two adjacent battery cells, with a spacing between the two adjacent battery cells in the first direction being D, an area of a surface of the buffer component which abuts against the battery cell being S1, and a size of the buffer component in the first direction in an uncompressed state is h1;
wherein a force F applied by the battery cell to the buffer component meets: 500N≤F≤10000N, in which a stress M of the buffer component obtained according to a stress strain curve of the buffer component is 26*((h1−D)/h1)2−0.09*(h1−D)/h1 in MPa, and by combining with the area S1 of the surface of the buffer component which abuts against the battery cell, the force F applied by the battery cell to the buffer component is obtained as F=S1*M,
the isolation assembly further comprises a heat insulation component arranged between the two adjacent battery cells and connected to the buffer component; and the buffer component surrounds an outer side of the heat insulation component in a direction perpendicular to the first direction, and
an area of a surface of the heat insulation component which abuts against the battery cell is S2, and S1 and S2 meet S2/(S2+S1)≥0.7.
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