Cell, power battery pack, and electric vehicle

A power battery pack, comprising:

• a housing;
• and
• a plurality of cells provided in the housing, wherein each of the cells comprises:
• a cell body, having a length L, a width H and a thickness D, the length L of the cell body being greater than the width H, and the width H of the cell body being greater than the thickness D, wherein the length L of the cell body is greater than 600 mm;
• the cell body has a volume V of greater than or equal to 953,750 mm3;
• and the length L and the width H of the cell body satisfy L/H=4-21, and the cell is a prismatic cell with an aluminum casing,
• wherein the cells have a total volume V1, the power battery pack has a volume V2, and V1/V2 is equal to or greater than 55%.