Electric storage battery construction and method of manufacture
First Claim
1. An electric storage battery, comprising:
- a case defining an interior volume;
a pin extending into an interior of a mandrel, the mandrel having a slot extending longitudinally along the mandrel and extending through a wall of the mandrel from an exterior of the mandrel to the interior of the mandrel;
an electrode assembly in the interior volume, the electrode assembly including first and second opposite polarity electrode strips wound around the pin and the mandrel so as to form a spiral roll; and
the pin extending from the interior volume through the case such that the pin is configured to function as a terminal for the battery.
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Accused Products
Abstract
An electric storage battery and method of manufacture thereof characterized by a feed through pin (12) which is internally directly physically and electrically connected to an inner end of a positive electrode substrate (32). A C-shaped mandrel (48) extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case (101) and in the final product constitutes one of the battery terminals (14) with the battery case comprising the other terminal. The electrolyte is injected through the open end of the case after the end cap is welded to the negative electrode but before sealing the end cap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.
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Citations
28 Claims
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1. An electric storage battery, comprising:
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a case defining an interior volume; a pin extending into an interior of a mandrel, the mandrel having a slot extending longitudinally along the mandrel and extending through a wall of the mandrel from an exterior of the mandrel to the interior of the mandrel; an electrode assembly in the interior volume, the electrode assembly including first and second opposite polarity electrode strips wound around the pin and the mandrel so as to form a spiral roll; and the pin extending from the interior volume through the case such that the pin is configured to function as a terminal for the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 21, 22, 23, 24, 25, 26, 27, 28)
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9. An electric storage battery, comprising:
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an electrode assembly including first and second opposite polarity electrode strips wound together to form a spiral roll; and the first and second electrode strips being wound around a pin with the first electrode strip being electrically coupled to the pin and an elongate mandrel being fitted around the pin, the mandrel being electrically conducting and being in electrical communication with the pin. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification