Leading-outlet terminal device of aluminium secondary coil of transformer welded by resistance welding machine

The utility model relates to a leading-outlet terminal device of an aluminium secondary coil of a transformer welded by a resistance welding machine. Composite plate made of red copper, copper alloy or silver-copper alloy and aluminium is taken as a leading-outlet terminal and the composite plate is connected with the aluminium terminal of the aluminium secondary coil in a welding, riveting or screwing way. The utility model solves the corrosion of the contact interface of copper, the copper alloy and the aluminium caused by corrosion potential, thus leading the secondary coil to be made of aluminium rather than copper, thereby eliminating the technical obstacle. The connection type given by the utility model ensures the quality of the joint; and the utility model saves a plurality of copper material and leads the connection operation to be simple and convenient.