Battery management system of sodium salt battery

By designing a battery management system suitable for sodium salt batteries, collecting battery data in real time and dividing segments according to the voltage-capacity curve, and preset charging and discharging parameters to control the charging and discharging of sodium salt batteries, the problem that existing BMS cannot adapt to the characteristics of sodium salt batteries is solved, and the performance of sodium salt batteries and the system stability is improved.

CN119675209AInactive Publication Date: 2025-03-21XIAN HUANGHE ELECTRONIC TECH CO LTD
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Patent Information

Application Number
CN202510167906.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-17
Publication Date
2025-03-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing battery management systems (BMS) are mostly designed for lithium-iron batteries, and cannot effectively adapt to the unique charging and discharge characteristics of sodium salt batteries, resulting in limited performance of sodium salt batteries.

Method used

A battery management system for sodium salt batteries is designed. By collecting the battery data of each sodium salt battery in real time, drawing a voltage-capacity curve, and dividing multiple segments according to the curve, each segment corresponds to a platform voltage, and preset charging and discharging parameters to control the charge and discharge of sodium salt batteries in each segment.

Benefits of technology

By adapting to the charging and discharging characteristics of sodium salt batteries, different charging and discharging strategies are adopted to effectively improve the performance of sodium salt batteries at different platform voltage stages, and the control of multiple BMSs is achieved through parallel structure, increasing the total capacity, extending the effective use time and energy storage capacity, and improving the stability of the system.

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Abstract

The invention relates to the technical field of battery management, and discloses a battery management system of sodium salt batteries, which comprises an upper computer and a battery management system BMS of at least two sodium salt batteries, each BMS corresponds to a battery pack consisting of a plurality of sodium salt batteries, and each BMS is used for collecting battery data of each sodium salt battery in the corresponding battery pack in real time, drawing a voltage-capacity curve of the sodium salt battery according to the battery data; the voltage-capacity curve is divided into a plurality of segments according to the voltage change rate indicated by the voltage-capacity curve, and each segment corresponds to one platform voltage of the sodium salt battery, so that the sodium salt battery is controlled to be charged and discharged in each segment according to charging and discharging parameters preset for each platform voltage of the sodium salt battery; wherein all the BMSs are connected in parallel, so that the upper computer controls all the BMSs at the same time. The BMS can adapt to the charging and discharging characteristics of the sodium salt battery, and the performance of the sodium salt battery is improved.
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