Patent ID: 6137669
Filing Date: 2000-10-24
Classification: G01K,H01C

Abstract:
A lithium ion polymer battery which comprises(A) a laminar battery element surrounded by an insulating material, said battery element comprising (1) first and second battery electrodes, (2) an anode, (3) a separator, (4) a cathode, and (5) and electrolyte; and(B) a laminar temperature sensor positioned in direct contact with the insulating material and covering at least 75% of one laminar surface of the insulating material, said sensor having a resistance at 20.degree. C. R.sub.T and comprising(1) a laminar sheet which (a) has a first surface and a second opposite surface, and (b) comprises a conductive polymer composition which exhibits PTC behavior;(2) a plurality of sensing elements (a) which are electrically connected in series, and (b) each of which comprises an electrode pair, said electrode pair comprising a first electrode and a second electrode, said electrodes being separated from each other and in contact with the laminar sheet; and(3) two electrical leads for connecting the sensing elements into a circuit.