JPH039592B

PURPOSE:To prevent any gas leakage which might be caused due to a large thermal deformation of fluorine system resin by forming a heat-resistant insulating plate by the use of a laminated plate, which is prepared by laminating plural pieces of glass cloth impregnated with a silicone resin before hot press is performed. CONSTITUTION:A heat-resistant insulating plate 17 consists of a laminated plate prepared by impregnating glass cloth with a silicone resin before drying, then laminating plural pieces of thus treated glass cloth before hot press is performed at 250 deg.C. The insulating plate is called 1G-13, has thermal resistance of 300-400 deg.C, a thermal expansion coefficient in thickness direction of 5.3X10/ deg.Cand a thermal expansion coefficient in longitudinal direction of 6.3X10/ deg.C, and does not cause permanent contraction. When a battery is assembled by using the laminated plate 17, since the thermal deformation of the laminated plate 17 is extremely small, there is no possibility that gass leaks through gaps which were conventionally caused.