Energy storage device

An energy storage device, wherein the energy storage device comprises:

• a casing having a length direction, a width direction, and a height direction, the casing comprising a battery compartment, wherein the battery compartment comprises a plurality of sub-compartments, the plurality of sub-compartments are arranged along a length direction of the casing, the battery compartment is provided with a partition, and two adjacent sub-compartments of the plurality of sub-compartments are separated by the partition;
• a plurality of batteries accommodated in the battery compartment, wherein each of the sub-compartments accommodates at least one battery of the plurality of batteries, and each battery of the plurality of batteries comprises a battery box and p*q battery cells, the battery box comprises a first portion and a second portion, the first portion and the second portion cover each other to define an accommodation space, the p*q battery cells are accommodated in the battery box, the p*q battery cells are arranged in p rows and q columns, each row of battery cells of the p*q battery cells is arranged along the length direction of the casing, each column of battery cells of the p*q battery cells is arranged along a width direction of the casing, p and q are both positive integers, the p*q battery cells of each battery of the plurality of batteries together constitute a plurality of battery cells within the battery compartment, each battery cell of the plurality of battery cells comprises a housing and electrode terminals, a volume of the housing is denoted as V3, V3 is greater than or equal to 0.0026 m3, and the electrode terminals are provided on the housing;
• and,
• support members provided in each of the sub-compartments, wherein along the length direction of the casing the support members are disposed on two opposite sides of each of the sub-compartments, and along the height direction of the casing the support members are located at a bottom portion of the casing and are configured to support the batteries accommodated in the sub-compartments, the support members being arranged to maintain a distance between adjacent batteries along the height direction;
• wherein a volume of the battery compartment is V1, a sum of volumes of the housings of all the battery cells in the battery compartment is V2, and 0.4≤V2/V1≤0.95, a volume of the casing is denoted as V, satisfying 0.45≤V1/V≤0.75 and 30 m3≤V≤80 m3.