SEALED BATTERY

• Main Authors: MATSUI TSUTOMU, SHIKODA MASAKI
• Format: Patent
• Language: English
• Published: 14.04.2011
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a sealed battery with high safety in which damages of an electrode group in a battery and exhaust failure of an internal gas are prevented. SOLUTION: The sealed battery includes an electrode group which is housed in an outer package can 1 and includes a positive electrode and a negative electrode, a battery seal 10 which is respectively electrically connected to the positive and the negative electrodes, covers the aperture of the outer package can, and has a positive electrode terminal and a negative electrode terminal, and spacers 41a, 41b which are arranged between the battery seal and the electrode group. The spacers fix the electrode group in the outer package can and have pressing plates 46a-46c with a gangway formed at a position facing the upper end face 2a of the electrode group, so that the spacers can prevent movement of the electrode group when vibration and shock are applied to the battery. Further, the electrolyte liquid filled from an electrolyte liquid injection port 20 is collected at the upper part 2a of the electrode group from the pressing plate gangway of the spacers, thereby the electrolyte liquid is uniformly impregnated from the upper end of the electrode group. Further, the gangway becomes a passage during gas exhaust and a safety valve is reliably opened. Thereby, the sealed battery with high reliability can be provided. COPYRIGHT: (C)2011,JPO&INPIT