High efficiency bi-directional charge balancing of battery cells

A high efficiency parallel bidirectional charge balancing circuit (BBC) for battery balancing that does not require high voltage transistors and automatically transfers charge from higher voltage cells to lower voltage cells within a battery pack of a plurality of cells connected in series using a dual phase charge pump, such as a dual phase charge pump supporting adiabatic. The BBC does not require complex external control logic to determine how the BBC is connected, the charge balancing is performed without interfering with the series connection of the cells in the battery pack, and there is a constant charge balancing over the entire charge range of the cells in the battery pack. Because each BBC spans only two cells, the voltage across each BBC is the sum of the voltages from only the two cells; thus, the BBC is scaled up to many cells without the need for increasingly larger and more expensive high voltage transistors. 一种用于电池平衡的高效率并行双向电荷平衡电路(BBC)，其不需要高电压晶体管，并且使用双相电荷泵例如支持绝热的双相电荷泵在多个串联连接的单元的电池组内将电荷从较高电压单元自