Single battery, power battery pack and electric vehicle

The invention discloses a single battery, a power battery pack and an electric vehicle. The single battery comprises a battery body, the battery body is provided with a length L, a width H and a thickness D, the length L of the battery body is larger than the width H, and the width H of the battery body is larger than the thickness D, wherein the length L of the battery body meets the condition that L is larger than 600 mm, and the width H of the battery body and the volume V of the battery body satisfy the following formula H/V = 0.0001 mm to 0.00015 mm . According to the embodiment of the invention, the single battery is high in heat dissipation capacity, and is beneficial to the overall arrangement in the power battery pack, so that the space utilization rate of the power battery pack is increased, the energy density of the power battery pack is increased, and the cruising ability of the power battery pack is enhanced. 本申请公开了一种单体电池、动力电池包和电动车，所述单体电池包括：电池本体，所述电池本体具有长度L、宽度H和和厚度D，所述电池本体的长度L大于宽度H，所述电