An electric vehicle comprising: a lower structure; and a driving battery (60, 60L, 60R) mounted on the electric vehicle, wherein the electric vehicle can travel by using electric power of the driving battery (60, 60L, 60R), the lower structure comprising: a floor panel that expands in a lower portion of a cabin; a specified vehicle structure that is provided below the floor panel and in an intermediate portion in a right-left direction thereof; a pair of floor side frames that extends in a front-rear direction along right and left portions of the lower surface of the floor panel; a specified component that is connected to the battery (60, 60L, 60R) and is arranged between the vehicle structure and one of the floor side frames; and an attachment bracket that is configured to attach the component to the floor panel, characterized in that the attachment bracket has an outer shell structure including: an inner wall portion that is configured to at least partially divide or partition the component and the vehicle structure; an outer wall portion that is configured to at least partially divide or partition the component and the floor side frame; an upper wall portion that is hung or provided between an upper edge of the inner wall portion and an upper edge of the outer wall portion; and a lower wall portion that is hung or provided between a lower edge of the inner wall portion and a lower edge of the outer wall portion. a lower structure; and a driving battery (60, 60L, 60R) mounted on the electric vehicle, wherein the electric vehicle can travel by using electric power of the driving battery (60, 60L, 60R), the lower structure comprising: a floor panel that expands in a lower portion of a cabin; a specified vehicle structure that is provided below the floor panel and in an intermediate portion in a right-left direction thereof; a pair of floor side frames that extends in a front-rear direction along right and left portions of the lower surface of the floor panel; a specified component that is connected to the battery (60, 60L, 60R) and is arranged between the vehicle structure and one of the floor side frames; and an attachment bracket that is configured to attach the component to the floor panel, characterized in that the attachment bracket has an outer shell structure including: an inner wall portion that is configured to at least partially divide or partition the component and the vehicle structure; an outer wall portion that is configured to at least partially divide or partition the component and the floor side frame; an upper wall portion that is hung or provided between an upper edge of the inner wall portion and an upper edge of the outer wall portion; and a lower wall portion that is hung or provided between a lower edge of the inner wall portion and a lower edge of the outer wall portion. a floor panel that expands in a lower portion of a cabin; a specified vehicle structure that is provided below the floor panel and in an intermediate portion in a right-left direction thereof; a pair of floor side frames that extends in a front-rear direction along right and left portions of the lower surface of the floor panel; a specified component that is connected to the battery (60, 60L, 60R) and is arranged between the vehicle structure and one of the floor side frames; and an attachment bracket that is configured to attach the component to the floor panel, characterized in that the attachment bracket has an outer shell structure including: an inner wall portion that is configured to at least partially divide or partition the component and the vehicle structure; an outer wall portion that is configured to at least partially divide or partition the component and the floor side frame; an upper wall portion that is hung or provided between an upper edge of the inner wall portion and an upper edge of the outer wall portion; and a lower wall portion that is hung or provided between a lower edge of the inner wall portion and a lower edge of the outer wall portion. an inner wall portion that is configured to at least partially divide or partition the component and the vehicle structure; an outer wall portion that is configured to at least partially divide or partition the component and the floor side frame; an upper wall portion that is hung or provided between an upper edge of the inner wall portion and an upper edge of the outer wall portion; and a lower wall portion that is hung or provided between a lower edge of the inner wall portion and a lower edge of the outer wall portion.