Patent ID: 6215311
Filing Date: 2001-04-10
Classification: H01M,Y02E,Y02P

Abstract:
In a battery manufacturing process for a battery having enclosed therein a plurality of battery cells, each of said battery cells including at least two first electrode plates connected to a first electrode terminal and at least one second electrode plate connected to a second electrode terminal, said first and second electrode plates having opposite charges, being parallel to each other, facing each other, and arranged in an alternating fashion, a battery cell inspecting method for detecting the fact of possible mistaken insertion of said battery cell into said battery, said battery cell inspecting method being characterized in thatsaid at least two first electrode plates are positioned outside of said at least one second electrode plate;a difference between a capacitance in a first state and a capacitance in a second state is detected to determine the fact of possible mistaken insertion of said battery cell into said battery;said capacitance in the first state being measured by dropping the potential of the second electrode plate of a first battery cell and the second electrode plate of a second battery cell neighboring to said first battery cell to a ground potential through each electrode terminal and by measuring the capacitance across the first electrode plate of said first battery cell and the first electrode plate of the second battery cell facing said first electrode plate of the first battery cell;said capacitance in the second state being measured by dropping the potential of the second electrode plate of the first battery cell and the first electrode plate of said second battery cell neighboring to said first battery cell to a ground potential through each electrode terminal and by measuring the capacitance across the first electrode plate of said first battery cell and the second electrode plate of the second battery cell facing said first electrode plate of said first battery cell, wherein the electrode plate having a potential of which has dropped to the ground potential is interposed between the first electrode plate of the first battery cell and the second electrode plate of the second battery cell.