Transformer manufacturing process

The invention relates to the technical field of power electronics, and provides a transformer manufacturing process which comprises a magnetic core assembly comprising two opposite magnetic cores; the framework is partially arranged in the magnetic core assembly; the winding is arranged on the framework; the protection piece comprises a piece suction part and an isolation part, the piece suction part is at least partially arranged above the framework, the isolation part is connected to the piece suction part, and the isolation part wraps at least part of the framework; and the pin assembly is electrically connected to the winding, at least part of the pin assembly is arranged in the isolation part, and the isolation part is used for isolating the pin assembly. According to the transformer manufacturing process, at least part of the pin assembly is arranged in the isolation part of the protection piece, the isolation part is used for isolating the pin assembly, the isolation part serves as an isolation area of