SEALED BATTERY AND ITS MANUFACTURING METHOD

• Main Author: OKADA NAOTADA
• Format: Patent
• Language: English
• Published: 30.03.2001
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a sealed battery of which armoring can and lid body are formed of a resin and which allows their jointing by a laser beam to be carried out, without using a high-output laser device. SOLUTION: This sealed battery is provided with an armoring can 1, made of a thermoplastic resin having an opening, a generation element 3 received in the exterior can 1 and having a positive and negative electrodes facing each other and sandwiching a separator, a lid body 2 made of a thermoplastic resin jointed to the opening of the exterior can 1, a positive electrode terminal 11 and negative electrode terminal 12 mounted to the lid body 2 and electrically connected to the positive electrode and negative electrode of the generation element 3, respectively, and an electrolyte injection hole 7 formed on the lid body 2 for injecting the electrolyte into the exterior can 1. Either one of the exterior can 1 and the lid body 2 is formed of a thermoplastic resin, having transmittance with respect to a laser beam, the other is formed of a thermoplastic resin containing a material having absorbency for a laser beam, and the lid body 2 is mounted to the exterior can 1 by laser welding.