BUSBAR COMPONENT, BATTERY, AND ELECTRICAL DEVICE

The present application provides a bus member (30), a battery (100) and a power consumption device, and relates to the technical field of batteries. The bus member (30), includes a first connection portion (31) configured to be connected to a first electrode terminal (222) of a first battery cell (24); a second connection portion (32) configured to be connected to a second electrode terminal (223) of a second battery cell (25); and a plurality of fusing portions (33), one end of each fusing portion (33) being connected to the first connection portion (31), and the other end of each fusing portion (33) being connected to the second connection portion (32); where an overcurrent cross-sectional area corresponding to one of the plurality of fusing portions (33) with a maximum overcurrent cross-sectional area is expressed as S, and an overcurrent cross-sectional area corresponding to one of the plurality of fusing portions (33) with a minimum overcurrent cross-sectional area is expressed as Smin, and Smin and S satisfy the following relational expression: 0.3≤S/S≤1. The minimum overcurrent cross-sectional area S and the maximum overcurrent cross-sectional area S in all the fusing portions (33) satisfy 0.3≤S/S≤1, and in the case of a short circuit, the fusing portion (33) of the bus member (30) has relatively short fusing time, thus shortening duration of the short circuit and avoiding accumulation of arc energy of the fusing portions (33) during fusing due to a long-duration short circuit.