Bipolar lead-acid storage battery

Abstract

Disclosed is a bipolar lead-acid storage battery. The bipolar lead-acid storage battery comprises a positive monopole plate, a negative monopole plate and multiple bipolar plates, wherein the positive monopole plate, the negative monopole plate and the bipolar plates are constituted by forming negative electrode and negative electrode conductive films by means of coating single surfaces or two surfaces of corresponding substrates with corresponding active materials; the positive monopole plate, the multiple bipolar plates and the negative electrode plate are arranged in sequence based on alternate conversion of positive electrode and negative electrode surfaces; porous diaphragms are arranged between adjacent polar plates and the space between the adjacent polar plates is filled with a conductive liquid; each single-grid battery is formed between the conductive film of the positive monopole plate and the negative electrode conductive film of the adjacent bipolar plate, between the positive and negative conductive films of the adjacent two bipolar plates, and between the conductive film of the negative monopole plate and the positive conductive film of the adjacent bipolar plate; a structure for isolating the corresponding single-grid battery is arranged around each substrate; the positive monopole plate and the negative monopole plate are connected with a positive leading-out terminal and a negative leading-out terminal respectively, wherein the substrates are dense lead-tin alloy substrates; lug bosses with equal distances are distributed on the two surfaces of the substrate; and the surfaces of the substrates are directly coated with corresponding active materials.

Description

technical field [0001] The invention relates to a lead-acid battery technology, in particular to a bipolar lead-acid battery technology. Background technique [0002] At present, there are many patents related to bipolar batteries, and the substrates in these patents are generally made of conductive ceramics or conductive plastics. [0003] For example, the publication number is CN 103985878 A, and the invention patent application document entitled "a bipolar grid for a lead-acid battery and its manufacturing method" discloses a bipolar grid for a lead-acid battery. When the active substances are combined, the surface of the substrate needs to be plated with lead. Due to the large internal resistance of conductive ceramics and conductive plastics, although the conductive area of ​​the substrate is much larger than the connecting strip of traditional batteries, the internal resistance of the same type of battery and bipolar battery is much higher than The internal resistance...

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Problems solved by technology

The common disadvantages of the substrates of the above two patent applications or authorized patents are: the substrates need secondary processing and compounding, the thickness of the substrate is large

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