公开(公告)号：US07535198B2

公开(公告)日：2009-05-19

申请号：US11404286

申请日：2006-04-14

申请人： Dal Hoon Lee ,  Han Ho Lee ,  Jee Ho Kim ,  Eguchi Yasuhito

发明人： Dal Hoon Lee ,  Han Ho Lee ,  Jee Ho Kim ,  Eguchi Yasuhito

IPC分类号： H01M10/46

CPC分类号： H02J7/0019 ,  H01M10/0525

摘要： Disclosed is a switching circuit for balancing battery cells. The switching circuit includes plural pairs of switching means, each pair of which are connected to each other in parallel and interrupt a flow of electric current in a bi-direction in order to reduce the internal voltage applied to the switching means. According to the present invention, since the switching elements of low internal voltage can be used for the switching circuit, it is possible to constitute the switching circuit for cell balancing without use of switching elements of high internal voltage and to reduce the number of MOSFETs, thereby making it possible to design the switching circuit effectively. Since the MOSFETs having the low internal voltage and low resistance are used for the switching circuit, it is possible to reduce a loss of the electric current due to the resistance during the cell balancing, thereby improving the balancing efficiency and reducing heat generation.

摘要翻译： 公开了一种用于平衡电池单元的开关电路。 开关电路包括多对开关装置，每对开关装置彼此并联连接并且中断双向电流，以便减小施加到开关装置的内部电压。 根据本发明，由于低内部电压的开关元件可以用于开关电路，所以可以构成用于电池平衡的开关电路，而不使用高内部电压的开关元件并且减少MOSFET的数量， 从而有可能有效地设计开关电路。 由于使用具有低内部电压和低电阻的MOSFET用于开关电路，因此可以减少由于电池平衡期间的电阻而导致的电流损失，从而提高平衡效率并减少发热。