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Lithium battery and zinc-bromine flow battery hybrid energy storage management system

A technology of zinc-bromine flow battery and management system, which is applied in the field of hybrid energy storage management system of lithium battery and zinc-bromine flow battery, can solve the problems of only energy efficiency and no power battery energy rate discharge, etc., and achieve high promotion value , the effect of expanding the application scale and application prospects

Inactive Publication Date: 2016-07-13
ANHUI MEINENG STORE ENERGY SYST
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Problems solved by technology

However, the energy efficiency of the zinc-bromine flow energy storage battery is only 70%, which is lower than that of the sodium-sulfur battery and lithium battery; the zinc-bromine battery system needs fifteen minutes of start-up time for the electrolyte circulation system to be activated for the first time. pre-run
The zinc-bromine battery system is an energy type battery with a maximum discharge rate of 0.5C, which does not have the advantage of power battery energy rate discharge

Method used

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  • Lithium battery and zinc-bromine flow battery hybrid energy storage management system

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Embodiment Construction

[0012] In the current microgrid or smart grid system, the requirements for energy storage batteries are not only the requirements of instantaneous frequency modulation and peak regulation, but also the requirements of peak shaving and valley filling for long-term charging and discharging. However, the existing microgrid configuration only uses a single Lithium batteries, or flow batteries, cannot fully respond to the needs of microgrids, resulting in the inability to develop rapidly in the application of energy storage batteries.

[0013] To meet the different application requirements of the microgrid, it is necessary to combine the power battery and the energy battery to give full play to their respective advantages and fully respond to the various needs of the microgrid system. This is the leading direction for the development of energy storage batteries.

[0014] On the basis of the above-mentioned application requirements and the disadvantages of the original design of the ...

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Abstract

The invention discloses a lithium battery and zinc-bromine flow battery hybrid energy storage management system. The management system is characterized in that five electric piles of a zinc-bromine flow battery are connected in series and then connected to a low-voltage terminal of a DC / DC converter, and the DC / DC converter is subjected to isolating voltage boosting and then divided into 16 paths to be output to a direct-current bus (DC Bus) in parallel; a lithium battery is divided into four paths of converters and then connected to the low-voltage terminal of the DC / DC converter to be converged with the zinc-bromine flow battery on the DC Bus, unified output is achieved, and a direct-current output port is formed and directly connected with a direct-current terminal of a PCS. The lithium battery and zinc-bromine flow battery hybrid energy storage management system has the advantages that the defect of single battery application in a traditional micro-grid system is overcome, the technical problem that the lithium battery cannot achieve long-time deep discharge is solved, the problem that the flow battery cannot achieve rapid rate discharge is solved, the application scale and application prospect of stored energy in future micro-grids and smart power grids are greatly extended, and a higher popularization value is achieved.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of lithium batteries and zinc-bromine flow batteries, in particular to a hybrid energy storage management system of lithium batteries and zinc-bromine flow batteries. Background technique [0002] Lithium battery is an excellent power battery with high charge and discharge efficiency and high rate discharge, etc. However, in the application of large-capacity electric energy storage, since a large-capacity lithium battery is composed of multiple single cells, when the capacity is large enough to a certain extent , when the number of single cells reaches a certain number, the problem of consistency between cells becomes prominent. At the same time, lithium batteries have strict requirements on charging and discharging. Overcharging or overdischarging will cause the battery to catch fire and explode. Especially in large-capacity applications, when a large number of batteries are connected in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/10H02J13/00
CPCH02J1/10H02J13/0003Y02B90/20
Inventor 杨波张红瑾殷俊秦小州冯先进史培森吴庆
Owner ANHUI MEINENG STORE ENERGY SYST
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