Title: Power managing system with multi-charging modes
Application Number: 200610114263 Application Date: 2006.11.03
Publication Number: 1949620 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02J7/00;H02J7/35
Applicant(s) Name: Inst. of Electric Engineering, CAS Address:
Inventor(s) Name: Yu Hongyun;Li Yanqiu
Attorney & Agent: guanling
Abstract:
    The invention is a multiple charging mode power supply management system, comprising power supply management circuit, Li ion battery and electrical connector, where the electrical connector comprises two charging interfaces and a power output interface. Indoor, AC adapter is connected with charging interface A, or USB interface is connected with charging interface B; outdoor, photovolt battery is connected with the charging interface A and load is connected with the power output interface; the power supply management circuit comprises intelligent charging circuit, energy source switching circuit, and supply voltage regulating circuit, where the intelligent charging circuit is composed of a chip MAX1874 and the peripheral circuit, DC pin is a shared input end for the AC adapter and photovolt battery, namely the charging interface A, USB pin is an input end of the USB interface, namely the charging interface B; the energy source switching circuit is composed of the MAX1874 externally connected with MOSFETs Q1, Q2 and Q3 and Schottky diodes D1 and D2; and the output end of the energy source switching circuit is connected with the input end of the supply voltage regulating circuit.
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