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Power-on self-test method of energy storage system and its application device and system

An energy storage system and self-testing technology, applied in the field of energy storage management, can solve problems such as fire, explosion, and endangering battery safety

Active Publication Date: 2021-04-13
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, once the wiring is short-circuited, a huge short-circuit current will be formed at the moment when the system switch is closed and put into operation, endangering the safety of the battery. If the protection is not timely, it may also cause fire, explosion and other adverse consequences.

Method used

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  • Power-on self-test method of energy storage system and its application device and system

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Embodiment Construction

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0069] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclud...

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Abstract

The power-on self-detection method of the energy storage system and its application device and system provided by the present invention, when the positive relay and / or the negative relay in each battery cluster in the energy storage system are disconnected, the PCS controller controls the battery in the PCS. The main power circuit is soft-started, so that the DC side of the PCS establishes a DC voltage and receives the detection value of the DC voltage; then controls the positive and negative relays in the BCP to close; and then receives the output terminals of each battery cluster through the CMU in each battery cluster The detection value of the voltage; if the output terminal voltage of each battery cluster and the DC voltage meet the corresponding relationship, it is determined that the positive and negative terminals of the output terminal of each battery cluster are connected normally; Determine the abnormality of the positive and negative wiring of the output terminal of the corresponding battery cluster; and then realize the self-inspection of the wiring between the battery cluster and the BCP of the energy storage system before starting up, and avoid bad situations caused by wiring errors.

Description

technical field [0001] The invention relates to the technical field of energy storage management, in particular to a power-on self-testing method of an energy storage system and its application device and system. Background technique [0002] In the electric energy storage system, multiple parallel battery clusters are connected through the BCP (Battery Conlletion Panel, battery converging cabinet) for confluence, and then connected to the PCS (Power Conversion System, energy storage inverter) for electric energy conversion. Taking the container-type energy storage system as an example, when multiple battery clusters are connected to the same BCP at the same time, it is necessary to connect dozens of wires to the positive and negative copper bars at the input end of the BCP. During the on-site operation, the space inside the container is small, the wiring workload is heavy, and the process is cumbersome. A strict quality control system is required to guide the wiring and che...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32G01R27/20G01R31/385G01R31/389
CPCG01R27/205G01R31/385G01R31/389H02J3/32
Inventor 周俭节马伟许大勇李金生
Owner SUNGROW POWER SUPPLY CO LTD
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