System for controlling voltage balancing in a plurality of...

H - Electricity – 02 – J

Patent

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H02J 7/02 (2006.01)

Patent

CA 2591789

Disclosed are system and method for adjusting a voltage balancing of cell in a lithium ion multicell battery pack. The system comprises a multicell battery pack including a master module and a slave module; a CPU located in the system controller and outputting a synchronization signal for each of cells in the master module and the slave module, a first vertical interface transmitting the synchronization signal outputted from the CPU to the master module; and a second vertical interface transmitting the synchronization signal to the slave module through the first vertical interface. Accordingly, it is possible to read voltages of all cells in the one battery pack with a same timing and thus to prevent a cell voltage reading error due to the voltage reading time difference, thereby increasing an accuracy of a voltage balancing of the cells.

L'invention concerne un système et un procédé pour régler un équilibrage de tensions de cellules dans un bloc de batteries à cellules multiples lithium-ion. Le système comprend un bloc de batteries à cellules multiples comprenant un module maître et un module esclave; une unité centrale située dans le contrôleur de système et sortant un signal de synchronisation pour chacune des cellules dans le module maître et le module esclave, une première interface verticale transmettant le signal de synchronisation sorti de l'unité centrale au module maître; et une seconde interface verticale transmettant le signal de synchronisation au module esclave grâce à la première interface verticale. En conséquence, il est possible de lire les tensions de toutes les cellules dans un bloc de batteries avec la même chronologie et donc d'empêcher une erreur de lecture de tension de cellule due à la différence de temps de lecture de tension, ce qui augmente la précision d'un équilibrage de tension des cellules.

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