| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack with quality of printed characters and strength of labels secured, without limitation in material quality of an outermost layer. SOLUTION: A battery core 7 is structured by insertion-coupling rectangular outer package frames 6 on four sides of a set battery 2 having a protective circuit board 4 arranged on one face of a unit battery 3. Then, both plane faces and parts of four side faces of the battery core 7 are wound around with a label 8 to structure a battery pack 1. The label 8 consists of a PET-made base material layer and a PP-made protective layer. One end part in a length direction of the label 8 lack a protective layer, and is structured as an information storage part 8d consisting only of the base material layer. The information storage part 8d has manufacturing information 8e stored. The label 8 is pasted on the battery core 7 so that the information storage part 8d is positioned outside at an overlapping part with the label 8. COPYRIGHT: (C)2010,JPO&INPIT
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