A battery module, comprising a first battery sequence, a second battery sequence, a first output electrode component, a second output electrode component, and a busbar assembly; the first battery sequence comprises a plurality of first batteries arranged along a longitudinal direction, the second battery sequence comprises a plurality of second batteries arranged in the longitudinal direction, and the first battery sequence and the second battery sequence are laid out along a transverse direction; the first batteries comprise a first electrode terminal, and the second batteries comprise a second electrode terminal; the busbar assembly comprises a first busbar component, a second busbar component, and a third busbar component, the first busbar component is connected to the first electrode terminal, the second busbar component is connected to the second electrode terminal, and the third busbar component connects the first electrode terminal and the second electrode terminal; and the first output electrode component is connected to the first electrode terminal of the first battery, the second output electrode component is connected to the second electrode terminal of the second battery, and the first battery connected to the first output electrode component and the second battery connected to the second output electrode component are located at the same end of the battery module along the longitudinal direction; and, wherein the first electrode terminal of the first battery and the second electrode terminal of the second battery are disposed opposite to each other along the transverse direction; and the busbar assembly is disposed between the first battery sequence and the second battery sequence; and, wherein the battery module further comprises a spacer plate disposed between the first battery sequence and the second battery sequence, and the spacer plate separates the first busbar component from the second busbar component, and separates the first output electrode component from the second output electrode component. the first battery sequence comprises a plurality of first batteries arranged along a longitudinal direction, the second battery sequence comprises a plurality of second batteries arranged in the longitudinal direction, and the first battery sequence and the second battery sequence are laid out along a transverse direction; the first batteries comprise a first electrode terminal, and the second batteries comprise a second electrode terminal; the busbar assembly comprises a first busbar component, a second busbar component, and a third busbar component, the first busbar component is connected to the first electrode terminal, the second busbar component is connected to the second electrode terminal, and the third busbar component connects the first electrode terminal and the second electrode terminal; and the first output electrode component is connected to the first electrode terminal of the first battery, the second output electrode component is connected to the second electrode terminal of the second battery, and the first battery connected to the first output electrode component and the second battery connected to the second output electrode component are located at the same end of the battery module along the longitudinal direction; and, wherein the first electrode terminal of the first battery and the second electrode terminal of the second battery are disposed opposite to each other along the transverse direction; and the busbar assembly is disposed between the first battery sequence and the second battery sequence; and, wherein the battery module further comprises a spacer plate disposed between the first battery sequence and the second battery sequence, and the spacer plate separates the first busbar component from the second busbar component, and separates the first output electrode component from the second output electrode component.