An electric device housing rack comprising: a first housing comprising a secondary battery module including a secondary battery and a heat vent ; a second housing comprising another secondary battery module including a secondary battery and a heat vent ; an air inlet that is positioned between the first housing and the second housing , and that draws air therein; and a flow divider that divides the drawn air into air flowing toward the first housing and air flowing toward the second housing ; wherein the second housing is positioned above the first housing , the air inlet is positioned between the first housing and the second housing in a vertical direction, and the flow divider divides the drawn air into an upward direction and a downward direction; characterized in that the electric device housing rack further comprises a casing including a door that houses the first housing and the second housing ; and a single air outlet that is provided with the casing and expels the drawn air outside the casing , wherein an exhaust passage through which the air is sent to the air outlet is defined by the first housing , the second housing , the secondary battery module housed in the first housing , the secondary battery module housed in the second housing , and the casing ; and wherein the first housing includes a first connecting terminal and a second connecting terminal electrically connected to a positive terminal and a negative terminal of the secondary battery module housed therein, and the second housing includes the first connecting terminal and the second connecting terminal electrically connected to the positive terminal and the negative terminal of the secondary battery module housed therein. a first housing comprising a secondary battery module including a secondary battery and a heat vent ; a second housing comprising another secondary battery module including a secondary battery and a heat vent ; an air inlet that is positioned between the first housing and the second housing , and that draws air therein; and a flow divider that divides the drawn air into air flowing toward the first housing and air flowing toward the second housing ; wherein the second housing is positioned above the first housing , the air inlet is positioned between the first housing and the second housing in a vertical direction, and the flow divider divides the drawn air into an upward direction and a downward direction; characterized in that the electric device housing rack further comprises a casing including a door that houses the first housing and the second housing ; and a single air outlet that is provided with the casing and expels the drawn air outside the casing , wherein an exhaust passage through which the air is sent to the air outlet is defined by the first housing , the second housing , the secondary battery module housed in the first housing , the secondary battery module housed in the second housing , and the casing ; and wherein the first housing includes a first connecting terminal and a second connecting terminal electrically connected to a positive terminal and a negative terminal of the secondary battery module housed therein, and the second housing includes the first connecting terminal and the second connecting terminal electrically connected to the positive terminal and the negative terminal of the secondary battery module housed therein. <EOS>