VEHICULAR BATTERY UNIT AND VEHICULAR UNDERBODY INCLUDING THE SAME

A vehicular battery unit includes a lower case including a pair of battery-receiving sections disposed at two lateral sides of a vehicle, and a connecting section, which is disposed between the pair of battery-receiving sections and is bent so as to be convex upwards, battery modules respectively mounted in the pair of battery-receiving sections, cooling blocks, which are disposed under the battery modules and which receive and discharge cooling water to cool the battery modules, at least one cooling water hose configured to exchange cooling water with the cooling blocks, and an upper case, which is disposed on the lower case and includes a cooling water hose coupler unit configured to connect the cooling water hose to the cooling blocks.