SECONDARY BATTERY, ELECTRODE MEMBER THEREOF, BATTERY MODULE AND RELATED APPARATUS

A secondary battery (7) and an electrode member (1) thereof, a battery module, and a related apparatus are provided. The electrode member (1) includes a current collector (11), an active material layer (12), an adapting sheet (13), and an electrode lead (14). The current collector (11) includes an insulating substrate (111), a first conductive layer (112), and a second conductive layer (113), and the first conductive layer (112) and the second conductive layer (113) are disposed on the insulating substrate (111). The first conductive layer (112) and the second conductive layer (113) each include a coated region (114) and an uncoated region (115), the coated region (114) is coated with an active material layer (12), and the uncoated region (115) is not coated with an active material layer (12), a size of the current collector (11) in a length direction (X) is larger than that in a width direction (Y), and the uncoated region (115) is located on a side of the coated region (114) in a length direction (X). The adapting sheet (13) includes a first conductive member (131) and a second conductive member (132), the first conductive member (131) and the second conductive member (132) are respectively connected to the uncoated region (115) of the first conductive layer (112) and the uncoated region (115) of the second conductive layer (113), and the first conductive member (131) is connected to the second conductive member (132). The electrode lead (14) is connected to the adapting sheet (13), and one end of the electrode lead (14) in the width direction (Y) is beyond the uncoated region (115).