Bipolar lead-acid battery

Abstract

The invention relates to the field of accumulators, and discloses a bipolar lead-acid accumulator, comprising a positive side plate, a negative side plate and a bipolar side grid, wherein the bipolar side grid includes several side plates arranged side by side, The two sides of the plate are respectively coated with positive and negative lead paste and cured. There is a diaphragm between each two adjacent plates. The two sides of the diaphragm are respectively in contact with the positive and negative lead paste. The two poles of the grid are respectively welded with several terminals, and the terminals on each pole are connected by lead wires. The frame of the bipolar side grid is injection molded to form a plastic frame, and the lead wires are led out to the upper part of the bipolar side grid. Outside the plastic frame, the positive side plate and the negative side plate are respectively formed by injection molding of the two pole faces of the bipolar side grid welded with terminals, and the side not connected with the terminals is coated with positive lead paste and negative lead respectively. Paste, bipolar edge grid with electrolyte contained within. The invention has the advantages of simple structure, convenient manufacture, low cost and high reliability.

Description

technical field [0001] The invention relates to the field of accumulators, in particular to a bipolar lead-acid accumulator. Background technique [0002] In recent years, in order to protect the environment and reduce carbon dioxide emissions, more new energy sources have been developed and utilized, especially in the automotive industry, but high-performance secondary batteries are still the current technical bottleneck. Practice in recent years has proved that lithium-ion batteries are Because of its structure and materials, it cannot be charged and discharged with a large current, and cannot be guaranteed. Therefore, from the current situation, bipolar lead-acid batteries will be the best choice for batteries in the automotive industry. However, they have not yet been developed at home and abroad. Mature and practical bipolar lead-acid batteries have been produced, and the bipolar plate structure is the biggest difficulty. The current public plate structures are relative...

AI Technical Summary

Problems solved by technology

[0002] In recent years, in order to protect the environment and reduce carbon dioxide emissions, more new energy sources have been developed and utilized, especially in the automotive industry, but high-performance secondary batteries are still the current technical bottleneck. Practice in recent years has proved that lithium-ion batteries are Because of its structure and materials, it cannot be charged and discharged with a large current, and cannot be guaranteed. Therefore, from the current situation, bipolar lead-acid batteries will be the best choice for batteries in the automotive industry. However, they have not yet been developed at home and abroad. A mature and practical bipolar lead-acid battery has been produced, and the bipolar plate structure is the biggest difficulty. The current public plate structure is relatively complicated, the production process is difficult, the cost is high, and the reliability is low.

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