Zinc-based flow battery controller and control method

By designing a zinc-based flow battery controller, monitoring and adjusting the battery cell voltage, and analyzing the battery data in real time, the problem of uneven voltage of the zinc-based flow battery cell is solved, which improves the performance and life of the battery pack, and reduces the performance decay caused by zinc deposition.

CN119725619AActive Publication Date: 2025-03-28SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202411865627.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-03-28
Estimated Expiration
2044-12-18

AI Technical Summary

Technical Problem

In the process of commercialization and large-scale deployment, zinc-based flow batteries face the problem of uneven battery cell voltage, resulting in a decrease in the charging and discharging efficiency of the battery pack and a shortened life.

Method used

Design a zinc-based flow battery controller to monitor and adjust the battery cell voltage through advanced hardware design and intelligent software algorithms, and process and analyze battery data in real time to achieve optimized management of battery status. The controller includes a motherboard and a function board. The motherboard includes a core processor, communication interface, power supply module, etc. The function board includes a flow battery cell voltage detection module, a single battery voltage equalization module, an electrolyte temperature control module, etc.

Benefits of technology

It effectively solves the problem of uneven voltage of the battery cell, improves the performance and operating life of the battery pack, and reduces the battery performance decay caused by uneven zinc deposition and peeling by evaluating and regulating the zinc deposition state.

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Abstract

The invention discloses a zinc-based flow battery controller and a control method, and the method comprises the steps: collecting the state detection information of a zinc-based flow battery fed back by each function board, including voltage state information, discharge current state information, electrolyte temperature state information, and electrolyte flow rate state information of a heat exchange circulating pump; according to the voltage state information, the discharge current state information and the electrolyte temperature state information, which are acquired by the state detection unit, of the single body or the module of the flow battery module, the battery pack equalization discharge analysis, the battery pack charge state estimation, the battery residual life estimation, the zinc deposition fault prediction and the zinc falling fault prediction are carried out; when the battery voltage is unbalanced, controlling the discharge parameter to carry out at least one of active balanced discharge or passive balanced discharge of the flow battery module; when a zinc deposition fault occurs, the electrolyte is heated by controlling the heat exchange rate of the heat exchange circulating pump and the temperature parameter of the electrolyte in the heat exchange tank, so that the zinc deposition of the zinc-based flow battery is reduced; and uploading analysis, estimation and prediction results to an upper computer.
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