Battery box

A battery box, comprising a battery and an electronic device electrically connected to the battery, wherein the battery box further comprises:

• a lower box body, comprising a first box part and a second box part, wherein the second box part is integrally connected to the first box part;
• a first top cover, hermetically and removably mounted in a height direction above the first box part and forming a sealed first space with the first box part, wherein the first space accommodates the battery;
• and
• a second top cover, hermetically and removably mounted in the height direction above the second box part and forming a sealed second space with the second box part, wherein the second space accommodates the electronic device electrically connected to the battery, and the second top cover is disposed independent of the first top cover;
• wherein the lower box body further comprises a longitudinal beam, disposed in the first space and extending along the entire first space in a longitudinal direction;
• and traverse beams, disposed on two sides of the longitudinal beam in a transverse direction, wherein the traverse beams and the longitudinal beam are cross arranged to split the first space into a plurality of subspaces, and the battery is accommodated in each subspace.