Temperature-sensitive thermal insulators for lead-acid batteries
AssigneeGNB Battery Technologies Inc.
InventorJing-Yih Cherng
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Abstract
Temperature-sensitive thermal insulators for batteries are provided for. The thermal insulators are fabricated from barrier film and have one or more expandable chambers containing a fluid. The fluid has a vaporization temperature of from about 90.degree. F. to about 200.degree. F., preferably from about 100.degree. F. to about 130.degree. F. The insulator has a first volume above the fluid vaporization temperature which is greater than a second volume of the insulator below the fluid vaporization temperature.
Claims11
A lead-acid SLI battery comprising a container having a top wall, a bottom wall, and side walls, and a temperature-sensitive thermal insulator fabricated from barrier film and having one or more expandable chambers containing a fluid, the fluid having a vaporization temperature of from about 90.degree. F. to about 200.degree. F., the insulator having a first volume above said vaporization temperature which is greater than a second volume of the insulator below said vaporization temperature, wherein the insulator is secured over at least a portion of the outer surfaces of the container walls.
Dependencies are inferred from the claim text.