Maintenance-free lead-acid storage battery of high-energy electric vehicle

Abstract

The invention discloses a maintenance-free lead-acid storage battery of a high-energy electric vehicle. The heights of the positive and negative electrodes are reduced, the widths of the positive andnegative electrodes are invariant, the positive and negative active substances are reduced, and the side negative plate pole group is adopted, so that the overall weight of the battery is reduced to 5.5 kg, the appearance size is kept consistent, the pole leading-out structure is not changed, the position of an acid adding port is not changed, the diameter of the acid adding port is slightly increased, the electrolyte fully reacts with an electrode while quantitative acid adding is realized, the final result is that the open-voltage range of the battery is reduced, and the battery matching rate is improved; by changing the condition of uneven current distribution on the polar plate, the length-width ratio of the polar plate is reasonably set, and the upper utilization rate and the lower utilization rate of the polar plate are increased; and by changing the shallow-charging and shallow-discharging state of the over-charging and over-discharging part at the upper part of the polar plate,the maximum homogenization of the electrochemical reaction of the polar plate is realized, so that the consistency and stability of the battery in the actual application process are improved, and theservice life of the battery is prolonged while each performance of the battery is stably improved.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a maintenance-free lead-acid storage battery for high-energy electric vehicles, and belongs to the technical field of maintenance-free lead-acid storage batteries for electric vehicles. Background technique [0002] The development of electric bicycles depends on one of the core components - batteries. So far, the quality of batteries has not passed the test, which hinders the rapid development of electric bicycles. [0003] At present, the main batteries used in electric bicycles are: lead-acid batteries and lithium-ion batteries. The industrialization of lead-acid batteries has a long history, the production technology is relatively mature, and the industrial chain has already matured, so the manufacturing cost is relatively low. After several years of technological progress, the performance and reliability of lead-acid batteries for electric bicycles have been greatly improved, ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a maintenance-free lead-acid battery for high-energy electric vehicles, which is used to solve the problems that the length-to-width ratio of the lead-acid battery plate is very unreasonable, the utilization rate of the upper part of the plate is high, and the utilization rate of the lower part is low. The problem of overcharging, over-lowering, shallow charging and shallow discharging of the lower part and the low efficiency of battery charging and discharging

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