Positive plate for high-capacity battery, preparation method and high-capacity battery

Abstract

The invention discloses a positive plate for a high-capacity battery. The positive plate comprises a positive plate grid and positive lead paste coated on the positive plate grid. The positive plate grid comprises the following components in percentage by weight: 1.2-1.5 wt% of tin; 0.05 to 0.07 wt% of calcium; 0.01 to 0.02 wt% of aluminum; 0.3 to 0.5 wt% of antimony; 0.03%-0.05% wt% of iridium; 0.07 to 0.15 wt% of rhenium; and the balance of lead. The formula of the positive electrode lead paste comprises the following components in percentage by weight: 0.1-0.3 wt% of magnesium plumbate; 0.1to 0.3 wt% of stannous sulfate; 0.1 to 0.3 wt% of polyolefin; 0.1-0.3 wt% of a 4BS seed crystal; 0.01-0.03 wt% of sodium perborate; 0.03-0.05 wt% of Ketjen black; 9-10 wt% of dilute sulfuric acid; 10-12 wt% of pure water; 0.1-0.12 wt% of fiber, and the balance of lead powder with the oxidation degree of 71 to 73 percent. The invention also discloses a high-capacity battery, comprising a negativeplate and a partition plate. The partition plate is of a double-composite type and sequentially comprises a thick glass fiber layer, a fine glass fiber layer, a PE layer, a fine glass fiber layer anda thick glass fiber layer from left to right, at least one positive plate adopting the formula is wrapped in the PE layer. The positive plate has the advantages of being excellent in deep discharge performance, high in recovery capacity after deep discharge and high in starting capacity.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a positive plate for a large-capacity battery, a preparation method and a large-capacity battery. Background technique [0002] Generally, lead-acid batteries for vehicles require instant start-discharge capability and low-temperature start performance, and such batteries cannot be used in deep charge and discharge situations; lead-acid batteries for vehicles with start-stop systems, The characteristic is that the engine is frequently started in the shallow discharge state, so this type of battery cannot be applied to the occasion of deep discharge to start the vehicle. [0003] Truck battery for parking air conditioner, the battery is used in winter and summer, when the truck is stopped and stopped, use the battery on the vehicle to start the vehicle air conditioner to meet the rest conditions of the car crew. In this state, the battery must not only meet the Deep dis...

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Problems solved by technology

[0008] The lead pastes and grids disclosed in the above-mentioned patents all use conventional materials and proportions, and their performance is average, and it is difficult to achieve deep discharge capability, rapid recovery capability after deep discharge, and high-strength start-up capability.

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