US 2023/0400520 A1Published application

Energy storage system and energy storage system detection method

OwnerLin Li, Zhipeng Wuinventors

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Abstract

This application provides an energy storage system and an energy storage system detection method. The method includes: A first control unit sends a first instruction to a first battery cluster to change an output voltage of the first battery cluster. The first control unit obtains a first input voltage and a second input voltage that are of each of a plurality of power conversion units. The first control unit determines, based on the first instruction, and the first input voltage and the second input voltage that are of each of the plurality of power conversion units, whether each of the plurality of power conversion units is connected to the first battery cluster. On this basis, whether there is a connection error in the energy storage system is determined. Then, a security risk in the system is eliminated.

Claims9

Dependent claims

An energy storage system, wherein the energy storage system comprises:

a plurality of battery clusters, configured to output voltages to a plurality of power conversion units, which are configured to receive the output voltages from the plurality of battery clusters, and output electric energy after performing direct current conversion;
a first control unit, configured to send a first instruction to a first battery cluster, wherein the first instruction instructs to change an output voltage of the first battery cluster, and the first battery cluster is any one of the plurality of battery clusters;
and
obtain a first input voltage and a second input voltage that are of each of the plurality of power conversion units, wherein the first input voltage is an input voltage of each power conversion unit before the first instruction is sent, and the second input voltage is an input voltage of each power conversion unit after the first instruction is sent;
and
determine, based on the first instruction, and the first input voltage and the second input voltage that are of each of the plurality of power conversion units, whether each of the plurality of power conversion units is connected to the first battery cluster.

3 more elements

An energy storage system detection method, the method comprises:

sending a first instruction to a first battery cluster, wherein the first instruction instructs to change an output voltage of the first battery cluster, and the first battery cluster is any one of a plurality of battery clusters of the energy storage system;
obtaining a first input voltage and a second input voltage that are of each of plurality of power conversion units of the energy storage system, wherein the first input voltage is an input voltage of each power conversion unit before the first instruction is sent, and the second input voltage is an input voltage of each power conversion unit after the first instruction is sent;
and
determining based on the first instruction, and the first input voltage and the second input voltage that are of each of the plurality of power conversion units, whether each of the plurality of power conversion units is connected to the first battery cluster.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 18/447,043Filed 9 Aug 2023
Priority: CN 202110185168.410 Feb 2021
Published: 14 Dec 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G01R 19/2513
Using digital measurement techniques: arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
G01R 31/3835
Arrangements for monitoring battery or accumulator variables, e.g. SoC: involving only voltage measurements
G01R 31/36
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by…
G01R 31/396
Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of…