Battery cluster online balancing method and system in battery energy storage system

A technology of battery energy storage system and battery cluster, which is applied in secondary batteries, secondary battery testing, secondary battery repair/maintenance, etc. It can solve problems such as poor accuracy, unbalanced electric energy, and affecting system charge and discharge capacity, and achieve Intelligent and simple operation, improved utilization and high adjustment accuracy
CN110137582AActive Publication Date: 2019-08-16JIANGXI GANFENG BATTERY TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI GANFENG BATTERY TECH
Publication Date
2019-08-16

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Abstract

The invention discloses a battery energy storage system, which comprises a confluence detecting unit, a detecting and protecting unit, a human-machine interaction unit, a master control unit, a battery cluster balancing module and an energy storage unit. The confluence detecting unit, the detecting and protecting unit, the human-machine interaction unit, the battery cluster balancing module and the energy storage unit are all in electrical signal connection to the master control unit. The invention also discloses an online balancing method for the battery cluster in the system. The balancing method solves the problem in the prior art that the energy storage system is required to be shut down to wait for maintenance, and greatly improves the utilization rate of the battery system.
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Description

technical field

[0001] The invention relates to the field of secondary battery energy storage, in particular to an online balancing method and system for battery clusters in a battery energy storage system. Background technique

[0002] Energy storage is an important part and key technology of smart grid, renewable energy system and energy Internet. The micro-grid energy storage solution can be applied to peak regulation and frequency regulation of energy storage power stations, or the use of cascade batteries, emergency power supply occasions, and some commercial applications for peak shaving and valley filling.

[0003] At present, in the secondary battery energy storage system, once a battery failure is found, the energy storage system will shut down as a whole and wait for maintenance, which greatly reduces the utilization rate of the battery system.

[0004] The battery maintenance of the secondary battery energy storage system is easy to cause the power imbalance betw...

Claims

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