Abstract: A battery pack housing includes a lower case configured to receive a plurality of battery cells and an upper cover located on the lower case so as to be coupled to the lower case in order to inhibit fire spread when fire breaks out in a battery pack, wherein the lower case includes a lower case fastening portion formed at the edge of the lower case so as to protrude and extend outwards, the upper cover includes an upper cover fastening portion formed at the edge of the upper cover so as to protrude and extend outwards, the upper cover fastening portion being coupled to the lower case fastening portion, and the upper cover fastening portion includes a first bent portion formed as the result of the end of the upper cover fastening portion being bent downwards.

Abstract: A battery pack includes battery modules stacked in multiple stages, and more particularly at least one battery module and a pack case configured to receive the battery module therein, wherein the battery module includes a first battery module and a second battery module vertically stacked above the first battery module, a first cooling unit configured to discharge heat generated from the first battery module is located between an inside upper surface of the bottom surface of the pack case and the first battery module, and a second cooling unit configured to discharge heat generated from the second battery module is provided between the first battery module and the second battery module.

Abstract: The present invention relates to a battery pack having a cooling unit provided outside a pack case, and more particularly a battery pack including a battery module (100) including one or more unit cells; a case (200) having a receiving portion configured to receive the battery module (100); a cooling unit (300) located at an outer bottom surface of the case (200); and a reinforcement member (400) configured to protect the cooling unit (300).