Power type lead accumulator positive grid alloy and preparation method thereof

A technology for lead-acid batteries and positive plates, which is applied in the formulation and preparation of positive grid alloys for power-type lead-acid batteries, can solve problems such as corrosion and fracture of positive grid alloys, and achieve improved utilization, elimination of capacity loss, and low melting temperature Effect
CN106636737AActive Publication Date: 2017-05-10HENAN CHAOWEI POWER SUPPLY
11 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HENAN CHAOWEI POWER SUPPLY
Publication Date
2017-05-10

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the technical field of lead-acid accumulators, and particularly relates to a power type lead accumulator positive grid alloy formula and a preparation method thereof. The alloy comprises the following raw materials in percentage by weight: 0.03-0.12% of calcium, 0.03-1.50% of tin, 0.01-0.05% of aluminum, 0.04-0.08% of sodium, 0.008-0.016% of silver, 0.02-0.03% of bismuth and the balance of Pb. A preparation process of a positive grid comprises the following steps: adding tin, silver and bismuth which are less prone to air oxidation and a small amount of aluminum into molten lead; and then adding sodium and calcium which are prone to air oxidation, wherein the first added aluminum can be floated on the surface of the molten lead alloy to protect the later added sodium and calcium. Thus, the composition uniformity of the molten alloy is ensured.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a formula and a preparation method of a positive electrode grid alloy of a power-type lead-acid battery. Background technique

[0002] Due to its mature technology, safety and reliability, rich raw materials, low price, and recyclable characteristics, lead-acid batteries have become the preferred power devices for electric bicycles and electric motorcycles. Occupies more than 90% of the battery market for electric bicycle batteries. In order to ensure the service life of electric vehicle batteries, grid alloys that are resistant to corrosion under strong acid and strong oxidation conditions must be used.

[0003] At present, lead-calcium-tin-aluminum quaternary alloy is generally used as the positive electrode grid alloy for electric vehicles, but this composition alloy still cannot meet the requirements of the battery, and corrosion and fracture of the g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More