Solar energy collection composite micro-energy system and method for realizing super capacitor charging control

Abstract

The invention discloses a solar energy collection composite micro-energy system and a method for realizing super capacitor charging control, and belongs to the technical field of new energy compounding. The composite micro-energy system is composed of a solar battery, a solar energy collection circuit, a battery protection circuit, a lithium battery, a super capacitor charger, a super capacitor, an output adjusting circuit and a controller. The solar battery, the solar energy collection circuit, the battery protection circuit, the lithium battery and the controller are connected in series to form a loop, and the super capacitor charger is connected with the solar energy collection circuit, the controller and the super capacitor to form the solar collection composite micro-energy system; the super capacitor of the system supplies power to the wireless sensing node through the output adjusting circuit. According to the system, the lithium battery and the super capacitor are adopted for composite energy storage, and large energy storage capacity and high power output can be achieved at the same time, and energy can be provided for the wireless sensing node for a long time. Different load conditions can be adapted, so that the capacity of the lithium battery is slowly attenuated, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of new energy recombination, and in particular relates to a solar energy collection and recombination micro energy system and a supercapacitor charging control method. Background technique [0002] With the development of electronic technology and Internet of Things technology, the application of wireless sensor network technology in reality is becoming more and more common. It is estimated that there will be more than 10 billion IoT nodes and devices in the world by 2020. Among them, wireless sensor network nodes occupy a large part of the Internet of Things nodes. Wireless sensor network nodes have sensing, processing and communication functions, and consume a lot of power. The energy supply problem is an important bottleneck that limits the development of wireless sensor node technology. [0003] The power supply method of traditional wireless sensor nodes is to use disposable batteries. However, due t...

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Problems solved by technology

[0007] Patent CN 108418252A discloses a wireless sensor hybrid energy harvesting device and operation method, which collects solar energy and wind energy and stores them in energy storage capacitors and lithium batteries. None of the details

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