Combined type small lithium battery

The utility model provides a combined type small lithium battery and relates to the field of lithium batteries. The combined small lithium battery comprises a supporting plate, a placement groove is formed in the front face of the supporting plate, an extension groove is formed in the inner wall of the placement groove, a groove is formed in the inner wall of the extension groove, a spring is fixedly connected to the inner wall of the groove, and a clamping piece is fixedly connected to the end, away from the inner wall of the groove, of the spring; the right sides of the clamping pieces are designed to be arc-shaped, the number of the clamping pieces is two, the two clamping pieces are symmetrically arranged about the central axis of the containing groove, and the surfaces of the clamping pieces are movably connected with the interior of the extending groove. According to the combined type small lithium battery, through mutual cooperation of the extension groove, the groove, the spring and the clamping piece