Solar mobile phone charging power supply system based on arm control

Abstract

The invention discloses a solar mobile phone charging power supply system based on ARM control. The main circuit adopts the Buck topology of the transposition switch tube. The charging function, and the rapid and efficient use of solar energy, meet the needs of people to charge mobile phones outdoors without AC power. The invention has the advantages of simple circuit structure, flexible control method, portability and low cost, and can effectively track the maximum power of the solar battery, and efficiently and reliably charge the mobile phone around the clock.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to a mobile phone charging power supply for realizing tracking of the maximum power point of a solar battery based on an ARM control system. Background technique [0002] At present, there are various household mobile phone chargers with excellent performance. With the increasing use of mobile phones, the capacity of mobile phone batteries has become a concern for people. Although there are various charging and energy storage devices on the market, outdoors still cannot meet people's needs. The demand for power consumption of mobile phones, using new energy to charge mobile phones outdoors has attracted more and more people's attention. This invention aims at the problems of low utilization rate of solar energy, complex structure and high price in photovoltaic systems that charge mobile phones in the current market. A structure is designed, which is convenient to ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are various household mobile phone chargers with excellent performance. With the increasing use of mobile phones, the capacity of mobile phone batteries has become a concern for people. Although there are various charging and energy storage devices on the market, outdoors still cannot meet people's needs. The demand for power consumption of mobile phones, using new energy to charge mobile phones outdoors has attracted more and more people's attention. This invention aims at the problems of low utilization rate of solar energy, complex structure and high price in photovoltaic systems that charge mobile phones in the current market. Designed a structure, easy to carry, low price, flexible control of the solar cell phone charging system, to meet the needs of mobile phone charging outdoors

[0003] At present, there are several solutions for using solar energy to charge mobile phones: (1) Use power management chips and buck-boost chips to step down or boost the voltage at the solar panel terminal to directly charge the mobile phone. This charging method, although simple in structure , but the utilization rate of solar energy is not high. When the sun is good, only a small part of solar energy is utilized, and most of the solar energy is wasted, which does not meet the concept of efficient utilization

[0004] (2) Use integrated circuits such as solar maximum power tracking chips and power management chips to charge mobile phones. This charging method can make good use of solar energy and can charge mobile phones stably. However, the design of the entire charging system is complicated and the cost is high. , not suitable for mass consumption

[0005] (3) The combination of single-chip microcomputer, ARM, DSP and other controllers with integrated circuits such as power management chips, but there are some disadvantages such as outdated algorithms, slow tracking speed, large disturbance, large power loss, and high cost.

[0006] (4) In addition, there are solar wireless chargers and other methods, which transmit electric energy wirelessly through coils. Although the trouble of wiring is eliminated, the structure is complicated and the cost is high, and the mobile phone can only be placed on the wireless charger. Charging at the receiving end, when there is a distance, the power loss is large, which cannot satisfy the use of mobile phones while charging, which brings inconvenience to users

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