Lead plaster for low temperature resistant lead storage battery for electric scooter and preparation method of lead plaster

Abstract

The invention relates to a lead plaster for a low temperature resistant lead storage battery for an electric scooter and a preparation method of the lead plaster. The lead plaster comprises an anode lead plaster and a cathode lead plaster, wherein the anode lead plaster comprises the following components in parts by weight: 950-970 parts of lead powder, 80-86 parts of 1.3-1.4g / cm<3> sulfuric acid, 110-125 parts of pure water, 3.0-4.0 parts of colloidal graphite, 30-50 parts of red lead, 1.0-1.5 parts of tin sulfate, 0.5-1.0 part of sodium sulfate and 0.7-0.9 part of short fiber; the cathode lead plaster comprises the following components in parts by weight: 1000 parts of lead powder, 75-81 parts of 1.3-1.4g / cm<3> sulfuric acid, 105-120 parts of pure water, 0.6-0.8 part of short fiber, 6.0-7.0 parts of barium sulfate, 1.0-1.5 parts of Norway lignin, 4.0-5.0 parts of humic acid, 3.0-5.0 parts of acetylene black and 1.0-1.5 parts of semi-carbonized saw dust. According to the lead plaster and the preparation method thereof, the acceptance performance when the battery is charged at low temperature is improved and the discharge capacity is increased; the lead plaster disclosed by the invention is applicable to low-temperature environment and is especially suitable for northeast and northwest regions in China.

Description

technical field [0001] The invention relates to a storage battery material and a preparation method thereof, in particular to a low-temperature-resistant lead storage battery lead paste for electric bicycles and a preparation method thereof. Background technique [0002] At present, the low-temperature performance of lead-acid batteries for electric mopeds is not good, and generally can only meet or slightly exceed the national standard: the low-temperature capacity at -15°C reaches 0.7C 2 , and at present, domestic batteries with better low-temperature performance can reach: -20°C low-temperature capacity of 0.75C 2 ; but its charging and receiving performance is relatively poor, generally only slightly exceeding the national standard value: Ica / I 0 ≥2 (Ica is the receiving current for charging, I 0 For discharge current: 0.1C 2 ), generally can reach: 2.0 ~ 2.3. It cannot meet the requirements for the use of environments with low temperatures below -20°C, especially in...

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Problems solved by technology

[0002]At present, the low-temperature performance of lead-acid batteries used in electric mopeds is not good, and generally can only meet or slightly exceed the national standard: the low-temperature capacity at -15°C reaches 0.7C 2, and at present, domestic batteries with better low-temperature performance can reach: -20°C low-temperature capacity of 0.75C2; but their charging and receiving performance is relatively poor, generally only Slightly exceeds the national standard value: Ica / I0≥2 (Ica is the charging current, I0 is the discharge current: 0.1C2) , generally can reach: 2.0~2.3

It cannot meet the requirements of low temperature environment below -20°C, especially in the northeast and northwestern regions of our country, some of which can reach -30°C in winter

Therefore, in the cold northern regions of our country, there are common phenomena that the batteries of electric mopeds are undercharged (poor charging acceptance) and short travel distances (low discharge capacity).

[0003] At present, the commonly used methods to improve the low-temperature discharge performance of lead-acid batteries in China are: 1. Thinning the electrodes and increasing the specific surface area of ​​the electrodes, but the cost of production control quality is high and the efficiency is low ;2. Adding sulfate with good conductivity to the electrolyte improves the conductivity of the battery electrodes, but only increases the low-temperature capacity in the early stage, which cannot be maintained continuously; 3. Reduces the concentration of the electrolyte, but the battery capacity is generally low; 4. Increase the negative electrode feeding and improve the negative electrode capacity, but the cost is too high

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