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1. (WO2017148407) ENERGY STORAGE CHARGING SYSTEM

Pub. No.:    WO/2017/148407    International Application No.:    PCT/CN2017/075417
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: H02J 7/00
H02J 3/32
Applicants: INVENTRONICS (HANGZHOU), INC.
英飞特电子(杭州)股份有限公司
Inventors: HUA, Guichao
华桂潮
Title: ENERGY STORAGE CHARGING SYSTEM
Abstract:
An energy storage charging system, provided with a centralised direct current bus (400) to supply electricity, the power of the direct current bus being provided by an AC-DC module (100), the input of one or a plurality of DC-DC charging modules (200) being taken from the direct current bus, the direct current bus being connected to an energy storage unit (500) via a bidirectional DC-DC module (600). When the output power of the AC-DC module is not sufficient, the bidirectional DC-DC module transfers energy from the energy storage unit to the direct current bus, provides the DC-DC charging modules with the energy, and has a load shifting effect. The direct current bus supplies electricity in a centralised manner, thus enabling the DC-DC charging modules to satisfy diverse charging requirements of different types of new energy vehicles at a low cost. In addition, the bidirectional DC-DC module enables the voltage of the direct current bus to be independent from the voltage of the energy storage unit, which facilitates optimised designs of the AC-DC module and the DC-DC charging modules, and increases the overall efficiency of the charging system.