Abstract: A power supply includes an input power supply, a multiphase interleaved parallel converter, and a current sampling apparatus. The input power supply is configured to supply power to an input end of the multiphase interleaved parallel converter. The multiphase interleaved parallel converter includes at least two phases of converters that are connected in parallel. The current sampling apparatus is connected to a switching transistor in each phase of converter in the at least two phases of converters that are connected in parallel. The current sampling apparatus includes a first sampling resistor. The first sampling resistor is connected to the input end or an output end of the multiphase interleaved parallel converter. The current sampling apparatus is configured to determine an inductor current of a first phase of converter based on a first current that is of the first sampling resistor and that is collected at a first moment.

Abstract: A system and method for battery charge/discharge equalization, the method including performing, for each battery module of M battery modules of a battery component, determining, by a control unit of the respective battery module, a reference value of a power parameter, wherein M is a positive integer greater than 1, where each battery module of the M battery modules includes the control unit, a direct current-direct current (DCDC) converter, and an energy storage unit, wherein the control unit is electrically connected to the DCDC converter, and the DCDC converter of each battery module is electrically connected to a load or a power supply, and where the reference value is associated with equalizing charging/discharging of the M battery modules, and controlling, by the control unit of the battery module using the DCDC converter, an value of the power parameter to be equal to the reference value.