Small-caliber spontaneous charging intelligent water meter

The invention discloses a small-caliber spontaneous charging intelligent water meter, and belongs to the technical field of intelligent water meters. The small-caliber self-charging intelligent watermeter comprises a valve-controlled base meter, a control box part, an intelligent control part and a spontaneous charging device, wherein the intelligent control part is installed in the control box part; the control box part is connected and fixed to a meter shell of the base meter through screws; the spontaneous charging device is arranged at a water outlet of the base meter; a data sampling line is connected between the base meter and the intelligent control part; and a power output line is connected between the spontaneous charging device and the intelligent control part. Compared with theprior art, the small-caliber spontaneous charging intelligent water meter integrates water meter metering, metering pulse acquisition and transmission, intelligent calculation and control, and spontaneous charging power suppl