Battery pack, comprising: a box body, in which a cavity is disposed; a partition structure, disposed in the cavity and configured to partition the cavity into at least two accommodation regions, wherein the partition structure comprises a first partition piece; a battery row, disposed in the accommodation regions, wherein the battery row comprises a plurality of batteries arranged alongside in a first direction, explosion-proof valves are disposed on a top cover of the batteries, the first partition piece is located between two batteries adjacent to each other in the first direction in the battery row, an upper surface of the first partition piece is lower than an upper surface of the top cover in a height direction, a recess is formed between the battery row and the first partition piece, the recess is located between the upper surface of the top cover of a first battery row and a second battery row separated by the first partition piece and the upper surface of the first partition piece, the first partition piece extends in a second direction and partitions the battery row into the first battery row and the second battery row, the first battery row and the second battery row are located in different accommodation regions,the first direction is perpendicular to the height direction, and the second direction is perpendicular to the first direction and the height direction; and a shielding member, comprising a first shielding portion and a second shielding portion, wherein the first shielding portion is configured to overlay all the explosion-proof valves of the battery row, a passage is disposed between the first shielding portion and the upper surface of the top cover, the passage is configured to guide a fluid to flow along the first direction and is provided with a downward opening; wherein the second shielding portion comprises a base plate and an extension plate, the base plate is configured to close off a part of the opening, the part facing the recess directly, and the extension plate is configured to extend upward from the base plate and is connected to the first shielding portion. a box body, in which a cavity is disposed; a partition structure, disposed in the cavity and configured to partition the cavity into at least two accommodation regions, wherein the partition structure comprises a first partition piece; a battery row, disposed in the accommodation regions, wherein the battery row comprises a plurality of batteries arranged alongside in a first direction, explosion-proof valves are disposed on a top cover of the batteries, the first partition piece is located between two batteries adjacent to each other in the first direction in the battery row, an upper surface of the first partition piece is lower than an upper surface of the top cover in a height direction, a recess is formed between the battery row and the first partition piece, the recess is located between the upper surface of the top cover of a first battery row and a second battery row separated by the first partition piece and the upper surface of the first partition piece, the first partition piece extends in a second direction and partitions the battery row into the first battery row and the second battery row, the first battery row and the second battery row are located in different accommodation regions,the first direction is perpendicular to the height direction, and the second direction is perpendicular to the first direction and the height direction; and a shielding member, comprising a first shielding portion and a second shielding portion, wherein the first shielding portion is configured to overlay all the explosion-proof valves of the battery row, a passage is disposed between the first shielding portion and the upper surface of the top cover, the passage is configured to guide a fluid to flow along the first direction and is provided with a downward opening; wherein the second shielding portion comprises a base plate and an extension plate, the base plate is configured to close off a part of the opening, the part facing the recess directly, and the extension plate is configured to extend upward from the base plate and is connected to the first shielding portion.