Battery cell with an integrated pouch metal foil terminal

摘要

A battery includes a battery cell having a pair of cell electrodes that are encased in a laminated pouch. The laminated pouch has a conductive moisture barrier layer that is sandwiched between respective electrically insulating layers. Several terminals are integrated with the pouch, including a first terminal and a second terminal that are directly connected to the first and second cell electrodes, respectively, and a third terminal that is directly connected to the conductive moister barrier layer. Other embodiments are also described and claimed.

主权项

1. An automated method for charging a rechargeable battery that is encased in a pouch having a conductive moisture barrier layer made of electrically insulated metal foil, the method comprising:
while charging the battery through first and second power terminals that are directly connected to battery cell electrodes, respectively, and are integrated with the pouch, applying a predetermined current to the metal foil, through a third terminal that is directly connected to the metal foil, while sensing a voltage of the metal foil through the third terminal, wherein the applied current is sourced from a power terminal of the battery; comparing the sensed voltage to a threshold; and based on the comparison, preventing the battery from being charged.