Reconfigurable equilibrium circuit with additional power supply

The invention provides a reconfigurable equalization circuit with an additional power supply, and the circuit comprises a battery cell module, an energy storage battery pack, an additional power module and a load. The battery cell module comprises two switches and one battery, and can determine the working state of a battery cell through controlling the operation of the corresponding switch. The energy storage battery pack is formed by the series connection of battery cells. The additional power module consists of three switches, one additional power supply, and one DC converter, and maintainsthe constant end voltage of the load through a corresponding control method. Through the adding of elements at lower cost, the circuit can maintain the end voltage of the load under the condition that the high flexibility and high conversion efficiency of the reconfigurable equalization circuit are maintained in an equalization process during the equalization of the energy storage battery pack orwhen some batteries have faults.

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