Battery converter

A clockwork spring wound on a winding drum is arranged between a shell and the winding drum, one end of the clockwork spring is connected to the winding drum, the other end of the clockwork spring is connected with a flexible solar cell panel, the other end of the flexible solar cell panel extends out of the shell and is connected with a non-return baffle outside the shell, and a battery spring piece is arranged on a bottom cover. The bottom cover is installed at the lower end of the shell, the upper portion of the positive electrode conductive block is arranged on an opening in the upper end of the winding drum, the lower portion of the positive electrode conductive block extends into the winding drum, a battery containing cavity is formed in the winding drum, and the lower end of the metal cap penetrates through the shell to be connected with the positive electrode conductive block. The negative electrode is connected with the bottom cover, and the shell is provided with a non-return clamping groove. The de