Uninterrupted power supply for battery pack vulcanization prevention and online capacity measurement

Abstract

The invention relates to an uninterrupted power supply for battery pack vulcanization prevention and online capacity measurement, belonging to the technical field of uninterrupted power supply. The invention is mainly characterized in that: under the support of software program, a battery pack and a switch power supply in the uninterrupted power supply alternatively supply power for the load under certain condition and mutually back up, and the checking-purpose discharge experiment which wastes large amount of energy and is troublesome and executed by the existing battery pack for preventing vulcanization is changed into the local discharge process which is the power supply process simultaneously, thus not only effectively preventing the vulcanization of the battery pack, but also reducing the trouble of the checking-purpose discharge experiment and saving the energy maximally. On the one hand, the invention has simple method, effectively improves the actual service life of the battery pack and reduces the use cost; and on the other hand, as the occurrence of accidents is reduced, the invention reduces economic loss caused by the accidents and the battery pack changes power discharge into power supply, effectively utilizes the energy and reduces enormous cost.

Description

technical field [0001] The invention relates to an uninterruptible power supply for preventing vulcanization of battery packs and on-line capacity measurement, and belongs to the technical field of uninterruptible power supplies. Background technique [0002] In the power system, communication system, financial and scientific research units, in order to still work normally when the power grid fails, a variety of DC uninterruptible power supplies and AC uninterruptible power supplies (UPS systems) are widely used. [0003] Most of the DC or AC uninterruptible power supply systems currently used at home and abroad have the same working principle, that is, the battery pack is used as the backup power supply, and the high-frequency switching power supply is used as the main power supply and charger. The high-frequency switching power supply is directly connected in parallel with the battery pack, and its voltage is adjusted to the float charge voltage of the battery pack to char...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide an uninterruptible power supply with anti-sulfurization of battery packs and on-line measurement of capacity, which solves the problem that in the existing AC and DC uninterruptible power supplies, because the battery packs are in the state of backup power for a long time, the sulfuration phenomenon inside the battery packs prevents the daily Due to the parallel connection of the battery pack and the charger, the damage of some batteries in the battery pack caused by this vulcanization is often covered up, resulting in the inability to supply power when the battery pack is needed, resulting in accidents of various degrees. The national economy has brought corresponding losses; and the use of the checking discharge experiment that must be carried out no less than once a year not only has troubles in implementation, but also thousands of uninterruptible power supplies for checking discharge experiments every year will waste A lot of electric energy is insufficient; through the present invention, it is possible to effectively prevent the vulcanization of the battery pack, reduce the trouble of checking discharge experiments and save energy to the greatest extent

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