Compound power supply multi-level voltage output device and multi-power supply selection control method

An output device, composite power supply technology, applied in battery circuit devices, circuit devices, transportation and packaging, etc., can solve the problems of increasing work complexity, short continuous use time, waste of human resources, etc., to save human and material resources, The effect of stable voltage waveform and extended working time

Inactive Publication Date: 2010-12-01
SHANGHAI OCEAN UNIV
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Problems solved by technology

At present, outdoor wireless measurement and control equipment is mainly powered by lithium batteries. The stored power is limited, the continuous use time is short, and the charging method is

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  • Compound power supply multi-level voltage output device and multi-power supply selection control method
  • Compound power supply multi-level voltage output device and multi-power supply selection control method
  • Compound power supply multi-level voltage output device and multi-power supply selection control method

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawings and examples.

[0010] Composite power supply multi-level voltage output device, under the condition of temperature of 25 ℃, select a solar battery with a maximum power of 15W and a battery pack composed of four 3.7V 2000mAh lithium batteries connected in series for illustration. The schematic diagram of its constituent modules is as follows figure 1 As shown, there are mainly solar battery modules, AC mains modules, lithium battery pack modules, ATMEL89C51 microprocessor modules, ADC0809 analog-to-digital signal acquisition modules, multi-level power supply selection modules and four-level voltage multi-channel output modules. The solar battery module includes a solar battery and a DC voltage regulator circuit; the AC mains module includes an AC interface, a transformer rectifier circuit, and a DC voltage regulator circuit; the lithium battery module includes a lithium batter...

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Abstract

In the invention, solar photovoltaic cells, alternating-current commercial power and lithium battery packs are compounded and used as power supplies to supply power circularly; a control algorithm of multiple paths of power supplies is designed on the basis of the solar maximum power point tracking theory; an inference rule set is established; a microprocessor module is used for carrying out intelligent control of power supply selection; an intelligent charging chip is combined to automatically charge and manage the lithium battery packs; multiple paths of DC-DC linear voltage-stabilizing modules of different types are connected with the output end of the device in parallel; and four-stage voltage multi-path output is provided. The system is specially designed for the actual needs of various kinds of low-voltage equipment under indoor and outdoor different environments, provides safe and stable energy output for a long time, is safe, environment-friendly, efficient, reliable, convenient and durable, and solves the problem of optimization of energy utilization when multiple paths of power supplies are used together.

Description

technical field [0001] The invention relates to a composite power supply multi-stage voltage output device used for power supply of integrated solar photovoltaic cells, AC mains power and lithium battery packs, and supplies power for portable equipment and field wireless monitoring equipment for a long time. Background technique [0002] The mature and large-scale commercial application of solar photovoltaic power generation technology has laid the foundation for the research of this design. At present, outdoor wireless measurement and control equipment is mainly powered by lithium batteries. The stored power is limited, the continuous use time is short, and the charging method is mainly through manual disassembly. The use of 220V AC mains chargers is especially reflected in the use of outdoor equipment. Inconvenient, increases work complexity and wastes human resources. This design can solve the instability of solar power supply voltage, use the solar maximum power point t...

Claims

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Application Information

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IPC IPC(8): H02J7/35
CPCY02E10/566Y02E10/56
Inventor 陈明卜涛冯国富孔祥红朱文婷王明
Owner SHANGHAI OCEAN UNIV
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