Preparation method of lead-tin-cobalt-silver alloy for high-temperature-resistant service-life valve-regulated lead-acid storage battery
CN119307776APending Publication Date: 2025-01-14JIANGSU LEOCH BATTERY
Patent Information
- Application Number
- CN202411358960.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-01-14
AI Technical Summary
Technical Problem
Existing valve-controlled lead-acid batteries are prone to rapid failure due to water loss and grid corrosion in high temperature environments, which affects their service life.
Method used
Pb-Sn-Co-Ag alloy is used as the positive and negative electrode grid material, and the alloy components are Pb 97%~99%, Sn 1.20%~1.80%, Co 0.18%~0.3%, Ag 0.12%~0.15%, through specific The heating and stirring process preparation improves the corrosion resistance and mechanical properties of the grid.
Benefits of technology
The service life of the battery under high temperature conditions of 75℃ has been significantly improved. Compared with the conventional Pb-Ca alloy preparation method, the service life of VRLA batteries is increased by more than 90%.
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Figure CN119307776A_ABST
Abstract
The invention relates to a preparation method of a lead-tin-cobalt-silver alloy of a high-temperature-resistant service-life valve-regulated lead-acid storage battery, and belongs to the technical field of lead-acid storage batteries, namely a Pb-Sn-Co-Ag alloy comprises the following alloy components in percentage by mass: 97%-99% of Pb; the mass fraction of Sn is 1.20%-1.80%; the mass fraction of Co is 0.18%-0.3%; according to the preparation method of the Pb-Sn-Co-Ag alloy, the Sn, the Co and the Ag in a proper proportion are added, so that the corrosion resistance of a grid can be effectively improved, the mechanical property and the electrochemical property of the grid alloy are improved, the water loss in the battery charging process is reduced, and the service life of a storage battery at the high temperature of 75 DEG C is prolonged. Compared with a conventional Pb-Ca alloy preparation method, the 75 DEG C service life of a VRLA storage battery produced by the Pb-Sn-Co-Ag alloy preparation method disclosed by the invention is prolonged by more than 90%.
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Citation Information
Cited By
Lead-tin-cobalt-silver alloy for high-temperature-resistant long-life valve-controlled lead-acid storage battery and preparation method therefor
WO2026066264A1