NOVELTY - The non-aqueous electrolyte secondary battery has positive and negative electrodes (30,50) that are mutually laminated through separators (70A,70B) in electrode portion (20). A surface of positive electrode active material layer (34) is laminated so that a heat-resistant layer (74) contacts both surfaces. A surface of negative electrode active material layer (54) is arranged so that the heat-resistant layer is contacted by only any one surface. A heat resistant resin layer made of aromatic polyamide, polyamidoimide, polysulfone and polyether sulfone is formed in base material (72).    USE - Non-aqueous electrolyte secondary battery such as lithium ion battery and nickel-hydrogen battery for use as driving power supply of vehicle such as motor vehicle. Can also be used in hybrid vehicle, electric vehicle, fuel cell electric vehicle, personal computer and portable terminal.    ADVANTAGE - Since the separators are arranged toward the positive electrode active material layer in the heat-resistant layer, the deterioration of the separator by the oxidizing atmosphere of positive electrode can be suppressed. Since the separators are equipped with heat-resistant layer, the insulation can be ensured and occurrence of the leakage current can be suppressed even if shuts down is occurred according to an overcharge. Also occurrence of the internal short circuit by mixing of metal foreign material can be prevented, and thermal-stability, the safety and reliability of the electrode at the time of overcharge can be improved by positioning the separator. The secondary battery can be manufacturing effectively without requiring new material and complicated manufacturing process.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the laminated structure of the electrode portion.    Electrode portion (20)    Positive and negative electrodes (30,50)    Positive electrode active material layer (34)    Negative electrode active material layer (54)    Separators (70A,70B)    Heat-resistant layer (74)