Composite lead-acid storage battery negative grid

Abstract

The invention discloses a composite lead-acid storage battery negative grid. The composite lead-acid storage battery negative grid consists of a skeleton and a panel. The skeleton is a lead alloy product shaped like a comb, the left end of a transverse skeleton positioned on the upper end is provided with a tab, the bottom edge is downwardly connected with 3 to 6 ribs which stay on a same plane and are distributed in a radiation shape, the rib positioned right below the tab is perpendicular to the transverse skeleton, and the ribs on other positions are obliquely arranged. The panel is a carbon fiber felt, the upper edge of the rectangular panel is in butt joint with the skeleton, and the ribs are embedded in the panel to form an integrally connected structure. A grid main body provided bythe invention is made of the carbon fiber felt, the weight of the grid main body is about 20 percent lighter than the weight of the product of a same specification of pure lead alloy, and the weightreduction can increase the gravimetric specific energy value of a lead-acid storage battery. In addition, the panel is made of the carbon fiber felt, so that the good sulfuric acid salinization resisting capability of the carbon fiber felt can be sufficiently played, the corrosion degree of the negative grid can be reduced, and the service life of the lead-acid storage battery can be prolonged.

Description

technical field [0001] The invention relates to a grid of a lead-acid storage battery, in particular to a negative grid of a lead-acid storage battery, in particular to a composite negative grid of a lead-acid storage battery. Background technique [0002] Lead-acid battery is a typical traditional energy storage product. It has the advantages of reliable performance and high cost performance, so it is widely used in related equipment in various industries. However, the lead-acid batteries in the prior art still have deficiencies in structure and performance, especially the weight-to-energy value is not high enough. In short, under the premise that the specifications are exactly the same, the lead-acid batteries of the prior art are much heavier than other types of batteries. Tracing it to its cause is that the built-in negative pole grid of lead-acid accumulator that prior art makes all is lead alloy product, occupies very large weight in lead-acid accumulator by the posit...

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Problems solved by technology

[0003] The present invention mainly aims at the problem that carbon fiber cannot completely replace lead alloy for making negative grid, and proposes a composite lead-acid storage battery negative grid composed of lead alloy and carbon fiber. The grid has a simple composite structure and good functional complementarity , the connection is reliable, it can not only improve the charging capacity, but also maintain the connection strength of the lead alloy tab, and the most important thing is that the weight reduction effect is remarkable

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