Solar direct-current energy storage refrigerator

Abstract

The invention relates to a solar refrigerator capable of controlling the working temperature of a solar cell panel. The solar refrigerator comprises a solar photovoltaic power generation system and arefrigerator refrigeration system, wherein the photovoltaic power generation system consists of a photovoltaic cell panel, a controller and a storage battery; a temperature control device is arrangedon the photovoltaic cell panel; the refrigerator refrigeration system mainly comprises a compressor, a condenser, a throttling device, a freezing chamber/ refrigerating chamber evaporator and a regenerator evaporator connected in parallel with the freezing chamber/refrigerating chamber evaporator; a heat pipe is taken as a heat transmission device between a regenerator and a refrigerator space; the regenerator releases cold when the electric energy is sufficient and the stored cold electric energy is insufficient; and the storage battery supplies power when the cold release of the regeneratoris finished and the power generation of the photovoltaic cell panel is still insufficient. The storage battery and the controller of the photovoltaic power generation system are integrated with the refrigerator, so that the appearance structure is more attractive and practical; and the temperature control device is simple and practical, the working temperature of a solar cell module can be effectively controlled, the energy consumption loss of the solar cell module is reduced, and the solar refrigerator has profound research significance for saving electric energy and effectively utilizing renewable energy sources.

Description

technical field [0001] The invention belongs to the field of refrigeration and cooling, and in particular relates to a solar refrigerator for controlling the working temperature of a solar battery panel. Background technique [0002] Solar energy is the most widely used clean renewable energy. Solar refrigeration technology has good seasonal matching, that is, the solar radiation is strong in summer, and the corresponding cooling demand is also the largest, while the solar radiation is relatively weak in winter, and the cooling demand is also small at this time. Based on this feature, solar refrigeration technology has received more and more attention and research. [0003] Compared with solar absorption and solar semiconductor refrigeration technologies, solar photovoltaic refrigeration technology has the advantages of better cooling effect, higher energy utilization rate, and lower self-loss. With the vigorous development of the photovoltaic cell industry and the continuo...

AI Technical Summary

Problems solved by technology

Most of the current research focuses on AC inverter refrigerators driven by solar photovoltaic cells or conventional household refrigerators. At present, there are no solar photovoltaic DC cold storage refrigerators on the market. The main reason is that the current products use pump circulation to transfer the cold storage. On the one hand, it increases the complexity of the system structure; on the other hand, the pump cycle needs to consume additional power, and it is driven by a rechargeable battery, which cannot achieve real off-grid operation

[0004] It can be seen from this that when the silicon solar cell works at a high temperature, the open circuit voltage drops sharply with the increase of the temperature, and at the same time causes a serious shift of the charging operating point, which easily causes the system to be insufficiently charged and damaged; the silicon solar cell The output power also drops significantly with the increase of temperature, so that the solar cell module cannot fully exert its maximum performance

But there is no simple and practical temperature control device at present, which can effectively control the working temperature of solar cell components to reduce the energy loss of solar cell components

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