DCDC power supply circuit and power supply system for lithium ion battery energy storage

The utility model discloses a DCDC power supply circuit and a power supply system for lithium ion battery energy storage, comprising a power supply management single-chip microcomputer, a voltage regulation module and an output interface, the power supply management single-chip microcomputer is used for generating and sending a control signal; the voltage regulation module comprises at least two voltage regulation module interfaces, the voltage regulation module is respectively connected with the power management single-chip microcomputer and the battery pack, and the voltage regulation module is used for receiving a control signal of the power management single-chip microcomputer and regulating the voltage of the battery pack according to the control signal; the output interface comprises at least two output end interfaces, the output end interfaces are in one-to-one connection with the voltage regulation module interfaces, and the output interfaces are used for outputting the voltage regulated by the voltag