Electric energy storage device balancing method

Abstract

The invention discloses an electric energy storage device balancing method, relates to the field of battery management systems, and aims at thoroughly solving two problems of over-high battery balance cost and over-high battery cost of electric devices of new energy automobiles and the like. Various battery units, namely battery packs or single batteries in one battery pack in one electric device carry out differential discharging on electric accessories in turn or respectively; good units discharge more electricity; poor units discharge less electricity; the electric accessories are a direct-current converter, a car lamp, a temperature regulating component, a radio and tape player, a brake pump motor, a power-assisted steering motor and the like; a measure and control unit detects various battery unit parameters and regulates and controls differential discharging on the electric accessories; and the prognostic lifetime of the battery units can also be calculated, persistently tends to the same, and is fully prolonged. The electric energy storage device balancing method is applied to new energy automobiles and the like; the problems that an existing battery management technology is free of a discharge balance, can cure the symptoms, not the disease, and is high in cost are completely solved; the electric energy storage device balancing method is simple and ingenious, does not waste electric energy, can also be combined with a charge balance to achieve a thorough balance; and over-high requirements of the whole industry chain on the uniformity, the materials and the technologies of batteries can be reduced, so that the battery cost is greatly reduced; and the benefits are great.

Description

technical field [0001] The invention relates to the field of battery management systems, in particular to a method for equalizing an electric energy storage device. Background technique [0002] In the industrialization of new energy vehicles, the battery is the bottleneck; among them, lead-acid batteries are more practically used, and lithium-ion batteries are expected to be industrialized, but there are generally problems of consistency between monomers, and it is not just as simple as the need for balance. In the production and application process of the upper, middle and lower reaches of the battery industry chain, a high cost has actually been invested in the pursuit of the consistency of the monomer, resulting in high initial costs, vehicle prices and subsequent replacement costs for lithium-ion batteries, hindering the development of lithium-ion batteries. The further commercialization of new energy vehicles requires a thorough resolution of the consistency issue. ...

AI Technical Summary

Problems solved by technology

[0025] The present invention provides a brand-new equalization method for electric energy storage devices aiming at the problems in the prior art that there is no real-time equalization of discharge, unbalanced life, unnecessary energy consumption, high cost, and temporary solutions.

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