Patent ID: 8349485

Claim:
A modular battery comprising: a housing, a first planar battery cell removably inside the housing, the first planar battery cell including first positive electrodes including cathode material but not anode material thereon, first negative electrodes including anode material but not cathode material thereon and first insulators at side peripheries of the first planar battery cell, the cathode material and anode material of the first planar battery cell being between the first insulators, the first insulators electrically insulating the first positive electrodes and the first negative electrodes from the housing, the first positive electrodes including at least one internal first positive electrode, the first negative electrodes including at least one internal first negative electrode; a second planar battery cell removably inside the housing, the second planar battery cell including second positive electrodes including cathode material but not anode material thereon, second negative electrodes including anode material but not anode material thereon and second insulators at side peripheries of the second planar battery cell, the cathode material and anode material of the second planar battery cell being between the insulators, the second insulators electrically insulating the second positive electrodes and the second negative electrodes from the housing; and an interconnector removably inside the housing disposed between the first planar battery cell and the second planar battery cell parallel to the cathode material and the anode material of the first and second planar battery cells, the interconnector electrically connecting the first and second planar battery cells; wherein the first insulators include a positive first insulator at a first end of the first planar battery cell and a negative first insulator at a second end of the first planar battery cell opposite the first end of the first planar battery cell, the at least one internal first positive electrode including the cathode material at a first end thereof and a bare tab at a second end thereof opposite the first end, the bare tab of the at least one internal first positive electrode being surrounded by the positive first insulator, the at least one internal first negative electrode including the anode material at a first end thereof and a bare tab at a second end thereof opposite the first end, the bare tab of the at least one internal first negative electrode being surrounded by the negative first insulator.