Electrical connection device

The utility model provides an electric connection device, which comprises a first wire connector, a second wire connector and a lubricant supply piece, the first wire connector comprises a first conductor capable of being connected to a first electric appliance, and the second wire connector comprises a second conductor capable of being connected to a second electric appliance. The second conductor and the first conductor form relatively movable conductive connection, the lubricant supply piece is connected with the first conductor and/or the second conductor and comprises a release part, and a lubricant in the lubricant supply piece can be discharged through the release part and reaches the joint of the first conductor and the second conductor. The lubricant supply member can store a lubricant and can automatically supply the lubricant to the joint of the first conductor and the second conductor to supplement the lubricant consumption at the joint of the first conductor and the second conductor, so that the