The invention discloses a
metal / air
battery pack, wherein the
metal / air
battery pack comprises more than two single batteries which are connected in series. The single battery comprises a hollow cuboid single battery shell; a
metal anode which is arranged in the shell and is vertical to the bottom of the single battery shell; air cathodes which are arranged at left side and right side of the
metal anode and are parallel to the
metal anode, wherein the two air cathodes are arranged on the wall surface of the shell, and an
electrolyte cavity is composed of the single battery shell and the internal parts of the air cathodes; an
electrolyte clapboard arranged at the bottom of the
electrolyte cavity in the shell, wherein the electrolyte
clapboard is in sealed connection with the inner wall surface of the front end and the inner wall surfaces at the left end and the right end of the shell, an air gap is reserved between the electrolyte
clapboard and the inner wall surface of the rear end of the shell, the electrolyte clapboard divides the electrolyte cavity into an electrolyte reaction cavity and an electrolyte circulation cavity, one end of the electrolyte reaction cavity and one end of the electrolyte circulation cavity are communicated, and the electrolyte reaction cavity is communicated with the rear end of the electrolyte circulation cavity; injection / drainage holes which are oppositely arranged at the far end of the communication part of the electrolyte reaction cavity and the electrolyte circulation cavity, namely the left and right side wall surfaces of the electrolyte circulation cavity at the front end of the shell, wherein the injection / drainage holes are located on the wall surfaces, where the two air cathodes are also located, of the shell in the electrolyte circulation cavity. The injection / drainage holes of the more than two single batteries which are connected in series are successively in serial sealed connection, and therefore, the electrolyte circulation cavities at the bottom of the whole
battery pack form an injection / drainage communicated channel. Compared with the prior art, the metal / air battery pack has the advantages that the single batteries in the battery pack are modularized and can be replaced rapidly, the anodes can be rapidly replaced through rapid contact elements, the battery pack itself can realize electrolyte injection and drainage management, continuous, stable and long time
discharge can be realized, and the cyclic utilization efficiency is improved.