Non-Aqueous Electrolyte Secondary Battery
First Claim
1. A non-aqueous electrolyte secondary battery comprising:
- a battery case including a case body portion having an opening, and a lid having a plurality of terminal through holes and configured to tightly seal the opening of the case body portion;
an electrode group and an organic electrolyte housed in the battery case;
a plurality of electrode terminals each including a terminal body portion electrically connected to the electrode group and a threaded terminal portion integrally formed with the terminal body portion and configured to pass through one of the terminal through holes of the lid, wherein each electrode terminal is fixed to the lid with a nut fastened around the threaded terminal portion of the electrode terminal;
a first gasket fitted to the threaded terminal portion and disposed between the lid and the nut;
a second gasket disposed on the terminal body portion to surround the threaded terminal portion, and disposed between the terminal body portion of the electrode terminal and the lid of the battery case;
an annular elastic member disposed on the terminal body portion to surround the threaded terminal portion on an inner side of the second gasket, the annular elastic member being compressed between the terminal body portion of the electrode terminal and the lid of the battery case; and
a filled resin portion formed by filling a resin material into an annular recess defined by at least the annular elastic member, the threaded terminal portion, and the terminal body portion and letting the resin material become cured.
1 Assignment
0 Petitions
Accused Products
Abstract
If a non-aqueous electrolyte secondary battery has a seal structure between a lid and an electrode terminal in which a seal member is compressed by fastening a nut, the nut may be loosened to make the amount of compression of the seal member insufficient to reduce the seal performance even if the nut is fastened enough to obtain an appropriate amount of compression of the seal member at the time of manufacture of the battery. A battery case has an opening, and houses an electrode group and an organic electrolyte. A lid is fastened to the battery case, and tightly seals the opening of the battery case. An electrode terminal is electrically connected to the electrode group. The lid and the electrode terminal face each other via an elastic member.
12 Citations
14 Claims
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1. A non-aqueous electrolyte secondary battery comprising:
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a battery case including a case body portion having an opening, and a lid having a plurality of terminal through holes and configured to tightly seal the opening of the case body portion; an electrode group and an organic electrolyte housed in the battery case; a plurality of electrode terminals each including a terminal body portion electrically connected to the electrode group and a threaded terminal portion integrally formed with the terminal body portion and configured to pass through one of the terminal through holes of the lid, wherein each electrode terminal is fixed to the lid with a nut fastened around the threaded terminal portion of the electrode terminal; a first gasket fitted to the threaded terminal portion and disposed between the lid and the nut; a second gasket disposed on the terminal body portion to surround the threaded terminal portion, and disposed between the terminal body portion of the electrode terminal and the lid of the battery case; an annular elastic member disposed on the terminal body portion to surround the threaded terminal portion on an inner side of the second gasket, the annular elastic member being compressed between the terminal body portion of the electrode terminal and the lid of the battery case; and a filled resin portion formed by filling a resin material into an annular recess defined by at least the annular elastic member, the threaded terminal portion, and the terminal body portion and letting the resin material become cured. - View Dependent Claims (2, 3, 4, 5)
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6. A non-aqueous electrolyte secondary battery comprising
a battery case including a case body portion having an opening, and a lid configured to tightly seal the opening of the case body portion; -
an electrode group and an organic electrolyte housed in the battery case; a plurality of electrode terminals each including a terminal body portion electrically connected to the electrode group and a threaded terminal portion integrally formed with the terminal body portion and configured to pass through the lid, wherein each electrode terminal is fixed to the lid with a nut fastened around the threaded terminal portion of the electrode terminal; an annular elastic member disposed on the terminal body portion to surround the threaded terminal portion and compressed between the terminal body portion of the electrode terminal and the lid of the battery case and a filled resin portion formed by filling a resin material into a recess defined by the lid, the terminal body portion, and the elastic member and letting the resin material become cured. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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Specification