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US 2014/0212765 A1Published application
Valve regulated lead-acid battery
AssigneeGS Yuasa International Ltd.
InventorsAya Harada, Yasuhide Nakayama
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Abstract
A valve-regulated lead acid battery comprises an element including a positive electrode plate which retains a positive active material, a negative electrode plate which retains a negative active material, and a separator. An average pore diameter of the negative active material measured by a bubble point method is 0.2 μm or more and 0.35 μm or less. An average pore diameter of the separator measured by the bubble point method is 10 to 40 times as large as the average pore diameter of the negative active material.
Claims5
A valve-regulated lead acid battery comprising:
- an element including a positive electrode plate which retains a positive active material, a negative electrode plate which retains a negative active material, and a separator,
- wherein an average pore diameter of the negative active material measured by a bubble point method is 0.2 μm or more and 0.35 μm or less, and
- an average pore diameter of the separator measured by the bubble point method is 10 to 40 times as large as the average pore diameter of the negative active material.
Dependencies are inferred from the claim text.