一种储能系统直流侧绝缘检测电路、方法及储能系统

By employing a single-switch Y-type unbalanced bridge circuit and an isolated sampling circuit on the DC side of the energy storage system, the problems of low detection accuracy and poor real-time performance are solved, enabling accurate and timely insulation resistance detection under high-voltage conditions, and improving the safety and reliability of the energy storage system.

CN116381434BActive Publication Date: 2026-07-17SUNGROW ENERGY STORAGE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUNGROW ENERGY STORAGE TECH CO LTD
Filing Date
2023-03-20
Publication Date
2026-07-17

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Abstract

本发明提供了一种储能系统直流侧绝缘检测电路、方法及储能系统，该电路包括：第一电阻、第二电阻、第三电阻、第一开关和隔离采样电路；第一电阻的第一端与储能系统直流侧的正母线电连接，第一电阻的第二端分别与第二电阻的第一端和第三电阻的第一端电连接，第二电阻的第二端与储能系统直流侧的负母线电连接，第三电阻的第二端接地，第一开关与第二电阻并联；隔离采样电路的第一输入端与第三电阻的第二端电连接，隔离采样电路的第二输入端与第二电阻的第二端电连接，隔离采样电路用于获取储能系统直流侧的负母线的对地电压。本发明的技术方案能够提高储能系统直流侧绝缘电阻的检测准确性和实时性。
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