| 摘要 |
PURPOSE:To prevent penetration of gas, moisture, and impurities such as ions to the inside of a battery through adhesives to provide a practical battery having high reliability by using in an adjacent places two kinds or more adhesives. CONSTITUTION:After assembling a battery, an adhesive 12' which does not attack power generating elements is spreaded on the inner side of a marginal sealing part 11. The adhesive which is chemically resistant to an electrolyte, free from solvent which adversely affects active masses, an electrolyte, and a current collector, and hardly reacts active messes and an electrolyte is used. For example, either one of epoxy family, nylon family, or silicone family resin adhesives is preferable. An adhesive 13 containing water absorption polymer is applied on the outer side of the marginal sealing part 11. For example, single polymer of ethyl methacrylate, acrylic ester such as copolymer of methyl acrylate and vinyl acetate, polyvinyl pyrrolidone, or urethane polymer mainly comprising isocyanate compounds is used as the water absorption polymer. |
