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Title:
ENERGY STORAGE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/011904
Kind Code:
A1
Abstract:
An energy storage system. The energy storage system comprises at least one energy storage unit cluster and a centralized monitoring system for the energy storage unit cluster; the energy storage unit cluster consists of at least two energy storage modules connected in series; each energy storage module comprises an energy storage element group and a switch bridge arm; the switch bridge arm consists of a main control switch and a bypass switch; one end of the main control switch is connected to the energy storage element group, and the other end of the main control switch is used as a first input/output end of the energy storage module; one end of the bypass switch is connected to the first input/output end, and the other end of the bypass switch is connected to a second input/output end of the energy storage module; the energy storage unit cluster is coupled to a direct current (DC) bus by means of a DC/DC converter; the centralized monitoring system is connected to the energy storage unit cluster by means of a control bus, and is used for controlling the opening and closing of the main control switch and of the bypass switch in any energy storage module in the energy storage unit cluster. The management flexibility of the energy storage system can be improved, the stability of the energy storage system is improved, and higher applicability is achieved.

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Inventors:
WANG ZHAOHUI (CN)
ZHOU HE (CN)
SHI LEI (CN)
Application Number:
PCT/CN2020/128604
Publication Date:
January 20, 2022
Filing Date:
November 13, 2020
Export Citation:
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Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02J7/00; H01M10/42; H02J3/32
Foreign References:
CN110661314A2020-01-07
US20090066291A12009-03-12
CN105703439A2016-06-22
CN102664432A2012-09-12
CN104993602A2015-10-21
CN202010683032A2020-07-15
Other References:
See also references of EP 4167423A4
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
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