BATTERY

• Main Authors: YAMAKAWA NAOKO, YAMAMOTO KENTA, TAKAGI RYOSUKE
• Format: Patent
• Language: English
• Published: 24.05.2007
• 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 battery in which an excellent discharge capacity can be obtained together with high load characteristics. SOLUTION: A battery element 20 having a positive electrode 21 and a negative electrode 22 is housed in a battery can 11 which serves as an external terminal of the negative electrode 22. A negative electrode reed 40 is arranged along the external surface of the battery element 20, and the end part 40A is made to contact the negative electrode 22 and is made to contact in surface the side wall of the battery can 11. Since the contact area between the negative electrode reed 40 and the side wall of the battery can 11 becomes large, current collection efficiency is increased, the internal resistance is greatly reduced, and discharge capacity and load characteristics are improved. The negative electrode reed 40 is constructed of a metal material containing copper, and its width W1 is shorter by 2 mm or more than the width W2 of the negative electrode 22. An insulating member 50 with a thickness of 40 μm or more is installed between the negative electrode reed 40 and the battery element 20. COPYRIGHT: (C)2007,JPO&INPIT