BATTERY CELL CASE AND BATTERY CELL
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United States of America Patent
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app pub date -
Sep 29, 2006
filing date -
Sep 29, 2006
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Abstract
A battery cell case comprises a cylindrical body (1), a top cover plate (3) and a bottom cover plate (4). The cylindrical body (1) comprises a top which is open and covered with the top cover plate (3) fixed thereto. The cylindrical body (1) further comprises a bottom configured to be a supporting surface having an opening (2), and the opening (2) of the supporting surface is configured to be covered with the bottom cover plate (4). Further, the opening (2) is configured to be a stepped opening or a conical bulge. Furthermore, a first bulge (12) is arranged on an exterior surface of the bottom surrounding the opening (2). A second bulge (13) is arranged on an exterior surface of the bottom cover plate next to the opening of the bottom. In addition, a battery cell formed from the battery cell case is also provided.
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