Circuit for prolonging service life of battery module

The invention relates to the related field of battery modules, in particular to a circuit for prolonging the service life of a battery module, which charges and discharges short-board battery monomers in a series battery module by utilizing an electric quantity transfer battery monomer P, and the electric quantity transfer between the short-board battery monomers is controlled by a capacitance and inductance module which is connected in parallel between the short-board battery monomers, so that the service life of the battery module is prolonged. The capacitance-inductance module performs bidirectional energy flow during charging and discharging during electric quantity transfer, so that the electric quantity transfer speed is high; the electric quantity transfer of the single electric quantity transfer battery P and the series battery module is realized through the module transformer module, and the power of the module transformer module is relatively high, so that the electric quantity transfer speed is als