Standby power system of vehicle-mounted terminal

The invention provides a standby power system of a vehicle-mounted terminal, which specifically comprises a main power supply, a standby battery, a standby power management circuit, a main and standby power switching circuit and an MCU (Microprogrammed Control Unit), wherein the main power supply an...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN DAXIN, LING LINYU, ZHU XIANFENG, LIN RONGJIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	The invention provides a standby power system of a vehicle-mounted terminal, which specifically comprises a main power supply, a standby battery, a standby power management circuit, a main and standby power switching circuit and an MCU (Microprogrammed Control Unit), wherein the main power supply and the standby battery are connected with the main and standby power switching circuit, and the MCU is connected with the main and standby power switching circuit and the standby power management circuit; the standby power management circuit is connected with a standby battery; after the main power supply is powered off, the main and standby power switching circuit controls to take power from the standby battery, the standby battery maintains system power supply until the voltage is lower than an under-voltage set value 3V, a comparator in the standby power management circuit outputs a standby battery closing signal, and the standby battery stops power supply; the invention provides a combined circuit for low-voltag