Parallel battery module and method

• Main Authors: FU MENGCHAO, MU SHIYOU, ZHANG HAILONG, MENG XIANGJUN, WANG BINGJUN, GONG FANGBO, ZHANG XIAOHUA
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a parallel battery module. The parallel battery module comprises a filtering circuit, a rectifying circuit, a PFC (Power Factor Correction) circuit, a first DC/DC converter, an energy storage element and a current limiting element which are sequentially connected, wherein an output end of the PFC circuit is connected with a storage battery through a second DC/DC converter, and charges the storage battery when an AC power supply is normal; the storage battery boosts and converts a DC power supply inputted by the storage battery into 110V or 220V DC voltage through a third DC/DC converter, the third DC/DC converter is connected with an output end of the first DC/DC converter in parallel, and the 110V or 220V DC voltage is outputted to a module output end through the energy storage element and the current limiting element. The parallel battery module acts as a hot backup of the first DC/DC converter in normal operation, can provide current output in overload, and drives a load together wi