Online real-time voltage balance management system and method of storage battery pack

Abstract

The invention discloses an online real-time voltage balance management system and method of a storage battery pack. The method comprises: through a voltage detection module, obtaining voltage signals of each storage battery; when original measurement voltage signals exceed a preset threshold or deviations among the original measurement signals exceed the preset threshold, triggering a selective charging function; the selective charging function selecting one or more storage batteries needing to be charged in case of voltage imbalances, and performing constant voltage charging; after time is set, through the voltage detection module, obtaining the voltage signals of each storage battery again; and when neither the original measurement voltage signals exceed the preset threshold nor the deviations among the original measurement signals exceed the preset threshold, determining that the voltage of the whole storage battery pack is equalized, such that online real-time voltage balance management of the storage battery pack is realized. The system and method provided by the invention can improve system operation safety and economic benefits, and reduce safety hidden risks of uncertainties caused by decreased storage battery performance.

Description

technical field [0001] The invention relates to the technical field of storage battery monitoring and control, in particular to a real-time on-line voltage balance (balance) management and control technology. Background technique [0002] The voltage and capacity of a single storage battery are limited, and in many cases it is necessary to form a battery pack connected in series. Because the problem of voltage balance of the battery pack is an important issue related to the service life of the battery pack, the stability and safety of the system. [0003] At present, the management of battery packs is still in the extensive and simple management mode, and there are the following problems: [0004] 1. Unable to manage online; [0005] 2. Periodic management is adopted, which cannot be managed in real time; [0006] 3. It is impossible to manage the discharge of the entire battery pack. [0007] As a result, the existing management technology of battery packs does not effe...

AI Technical Summary

Problems solved by technology

[0004] 1. Unable to manage online;

[0005] 2. Periodic management is adopted, which cannot be managed in real time;

[0006] 3. It is not possible to manage the discharge of the entire battery pack

[0007] As a result, the existing battery pack management technology has not effectively managed the battery voltage differentiation caused by voltage imbalance, and the life of the battery has been greatly affected, and performance degradation has become an uncertain safety hazard.

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