Sealed recharge battery plenum stabilized with state changeable substance
First Claim
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1. A sealed, rechargeable lead-acid battery comprising:
- a case;
a plurality of negative and positive electrode plates arranged in the case;
a plurality of separators interposed between the negative and positive electrode plates; and
a plenum stabilization material disposed within the case and filling substantially all free space within the case, said plenum stabilization material comprising a compound that (i) is solid during normal operation of the battery and (ii) can undergo reversible physical change in state from solid to liquid when the battery is subjected to or is operated under abnormal conditions;
whereby said plenum stabilization material maintains the positions of the electrode plates relative to one another and to other components within the case, inhibits shorts between internal conductors within the case, and substantially increases the rechargeable cycle life of the battery.
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Abstract
A lead-acid battery including a case, a plurality of negative and positive electrode plates arranged in the case, a plurality of separators interposed between the negative and positive electrode plates, and a plenum stabilization material disposed within the case to maintain the positions of the electrode plates relative to one another and to other components within the case. The plenum stabilization material includes a compound that (i) is solid during normal operation of the battery and (ii) can undergo reversible physical change in state from solid to liquid when the battery is subjected to or is operated under abnormal conditions.
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Citations
17 Claims
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1. A sealed, rechargeable lead-acid battery comprising:
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a case; a plurality of negative and positive electrode plates arranged in the case; a plurality of separators interposed between the negative and positive electrode plates; and a plenum stabilization material disposed within the case and filling substantially all free space within the case, said plenum stabilization material comprising a compound that (i) is solid during normal operation of the battery and (ii) can undergo reversible physical change in state from solid to liquid when the battery is subjected to or is operated under abnormal conditions; whereby said plenum stabilization material maintains the positions of the electrode plates relative to one another and to other components within the case, inhibits shorts between internal conductors within the case, and substantially increases the rechargeable cycle life of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. A method of increasing the rechargeable cycle life of a sealed, rechargeable lead-acid battery, comprising the step of filling substantially the entire free space within the internal compartment of the battery with a plenum stabilization material that (i) is solid during normal operation of the battery and (ii) can undergo reversible physical change in state from solid to liquid when the battery is subjected to or is operated under abnormal conditions.
- 13. A method of inhibiting shorts between internal conductors in a sealed, rechargeable lead-acid battery, comprising the step of filling substantially the entire free space within the internal compartment of the battery with a plenum stabilization material that (i) is solid during normal operation of the battery and (ii) can undergo reversible physical change in state from solid to liquid when the battery is subjected to or is operated under abnormal conditions.
Specification