BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE

This application provides a battery module, a battery pack, and an electrical device. The battery module includes at least one battery group and multiple buffer members. The battery group includes multiple batteries arranged along a first direction. Each battery includes multiple positive electrode plates and multiple negative electrode plates alternately stacked along the first direction. In each battery, the positive electrode plate and the negative electrode plate respectively include portions that overlap with each other in the first direction to form an overlapping region, while the positive electrode plate and a remaining portion of the negative electrode plate do not overlap in the first direction, forming a non-overlapping region.