Battery pack, electrical device using battery pack, and electrical device system

• Main Authors: Hanawa, Hiroyuki, Wakatabe, Naoto, Nishikawa, Tomomasa, Matsushita, Akira, Murakami, Takuhiro, Toukairin, Junichi, Takeuchi, Shota, Funabashi, Kazuhiko, Tamura, Hikaru, Hirano, Masaru, Sato, Junpei, Takano, Nobuhiro, Mizoguchi, Toshio, Nakano, Yasushi, Yamaguchi, Hayato, Watanabe, Shinji, Funabiki, Yusuke, Teranishi, Takuya, Ogura, Masayuki, Kawanobe, Osamu, Kanno, Shota
• Format: Patent
• Language: English
• Published: 03.12.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

In an upper cell unit 2146 and a lower cell unit 2147 comprising five battery cells, positive electrode terminals (2162, 2172) are set apart and aligned vertically, and negative electrode terminals (2167, 2177) are set apart and aligned vertically. When an electrical device body is rated at 36V, device-side terminals are in contact only at the upper terminals 2162, 2167, and short circuiting of the lower terminals 2172, 2177 is effected using a short bar 2059. When the electrical device body is rated at 18V, the upper and lower terminals (2162 and 2172, 2167 and 2177) are simultaneously made to contact the device-side terminals, and the upper cell unit 2146 and the lower cell unit 2147 assume a parallel connected state. Thus, it is possible to automatically switch the output voltage when a battery pack is mounted according to the difference in terminal shape on the electrical device body side.