Constant power cycle mode of lead-acid battery for energy storage

Abstract

The invention discloses a constant-power circulation mode of an energy storage lead-acid storage battery. One large cycle consists of one hundred of small cycles, one time of energy supplement power and one time of energy detection. The constant-power circulation mode comprises the following specific steps: firstly, selecting an energy storage lead-acid battery which is fully charged and has qualified 4hr rated energy at the ambient temperature of 25 DEG C; continuously performing one hundred of small cycles in such a manner that one time of charging and discharging is taken as a small cycle;then performing energy supplement power once; lastly, performing one time of energy detection. The abovementioned steps are repeated, a retest is carried out when the 4hr energy of the lead-acid storage battery is lower than 80 percent of the rated energy, the test is ended when the 4hr energy of the lead-acid storage battery is confirmed to be lower than 80 percent of the rated energy, cycle times are recorded, and the last cycle is not counted in the large cycles. By adopting the constant-power circulation mode, the watt-hour efficiency is up to 92 percent, and the cycle life is increased from 1,800 times to 3,000 times counted by 60 percent DOD depth. The constant-power circulation mode has the technical effects that the watt-hour efficiency is increased, the cycle life is prolonged, and the electric charge is lowered for a user.

Description

technical field [0001] The invention relates to a constant power cycle mode of a lead-acid battery, in particular to a constant power cycle mode of a lead-acid battery for energy storage. The technical proposal belongs to the technical field of lead-acid batteries. Background technique [0002] In order to encourage industrial and mining enterprises to rationally adjust production and electricity plans to reduce the peak load of the national grid, our country implements a step-by-step electricity price, the purpose of which is to adjust the electricity consumption behavior of electricity consumers through economic leverage. The densely populated mobile communication base stations are long-term power users, and their matching DC power supply system is composed of switching power supply + backup battery system. Under normal circumstances, the switching power supply is introduced into the power supply of the national public grid. If the public grid occasionally fails, the backu...

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Problems solved by technology

[0003] The present invention mainly aims at the problem that the watt-hour efficiency of the prior art is not high enough, and proposes a constant power cycle mode of a lead-acid battery for energy storage, which has a simple method, a reasonable process, high watt-hour efficiency, and can greatly prolong the cycle life of the battery.

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