Auxiliary power supply device and switching power supply system

The utility model discloses an auxiliary power supply device and a switching power supply system, the auxiliary power supply device is used for the switching power supply system, a first power supply and a second power supply are formed in the switching power supply system, and the second power supp...

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Bibliographische Detailangaben
Hauptverfasser:	ZENG SONGBIN, WANG ZHIHAO, SHEN PEIJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The utility model discloses an auxiliary power supply device and a switching power supply system, the auxiliary power supply device is used for the switching power supply system, a first power supply and a second power supply are formed in the switching power supply system, and the second power supply is an energy storage power supply; the auxiliary power supply device comprises a first conversion circuit and a second conversion circuit which are respectively connected with the first power supply and the second power supply and perform corresponding conversion to output power supply, and the output ends of the first conversion circuit and the second conversion circuit are connected in parallel; when the output voltage of the first conversion circuit is higher than a preset first voltage threshold value, the second conversion circuit is closed; when the output voltage of the first conversion circuit is lower than a first voltage threshold value, the second conversion circuit is turned on. The switching power s