Battery and electricity consuming apparatus
View Patent ↗The present application discloses a battery and an electricity consuming apparatus. The battery includes a plurality of battery cells stacked in a first direction and an isolation assembly. The isolation assembly includes a buffer component arranged between two adjacent battery cells, the spacing between the two adjacent battery cells in the first direction is D, an area of a surface of the buffer component abuts against the battery cell is S1, and a size of the buffer component in the first direction in an uncompressed state is h1; a force F applied by the battery cell to the buffer component meets: 500N≤F≤10000N, in which the 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*(h 1−D)/h1 in MPa, and by combining the area S1, the force F is obtained as F=S1*M.
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.
2. The battery according to claim 1 , wherein a size of the battery cell in the first direction is C, a size of the heat insulation component in the first direction in an uncompressed state is h2, a maximum compression rate of the heat insulation component during a charging and discharging of the battery is a, and C, h2, a, and D meet:
0.01 C≤D −(1 −a ) h 2≤0.2 C.
3. The battery according to claim 1 , wherein the buffer component covers an entirely of outer peripheral edges of the heat insulation component.
4. The battery according to claim 1 , wherein the heat insulation component is clamped to the buffer component.
5. The battery according to claim 1 , wherein a size of the heat insulation component in the first direction in an uncompressed state is h2, and h2 and D meet: h2≤D.
6. The battery according to claim 1 , wherein the heat insulation component comprises a heat insulation layer and a first film layer arranged on a surface of the heat insulation layer facing the battery cell;
the buffer component comprises a buffer layer and a second film layer arranged on a surface of the buffer layer facing the battery cell; and
the first film layer and the second film layer are integrally provided.
7. The battery according to claim 1 , wherein, before construction, h1 and D meet: h1>D.
8. An electricity consuming apparatus, comprising the battery according to claim 1 , the battery being configured to provide electrical energy.