Photothermal auxiliary heating method of solar lithium battery street lamp

Abstract

The invention discloses a photothermal auxiliary heating method of a solar lithium battery street lamp. The method is characterized in that a heat collecting material with heat collecting performances is mounted on a metal surface of a solar street lamp rod, a lamp cover or a solar cell frame to form a heat transfer system with a heat collecting pipe, a heat conducting pipe, a heat conducting pipe electromagnetic valve and a heat circulating plate. Under the conditions of low temperature, if a sensor detects that a temperature value of a heat surface of a lithium battery is lower than a set value, the heat conducting pipe electromagnetic valve is opened, sunlight is irradiated to the heat collecting material to generate heat, the heat is transferred to the heat conducting pipe through the heat collecting pipe, and is transferred into the heat circulating plate mounted at the periphery of a lithium battery set; and the heat circulating plate is heated to preheat a lithium battery. When the sensor on the surface of the battery detects that the temperature of the lithium battery reaches the set value, the heat conducting pipe electromagnetic valve is closed, the heating of the lithium battery by the heat transfer is stopped, and meanwhile, the lithium battery is charged by a photovoltaic plate.

Description

technical field [0001] The patent of the invention belongs to the field of intelligent control of solar street lamps, and is mainly used for a method for automatically heating the temperature of lithium batteries of solar street lamps under low temperature conditions. Background technique [0002] Solar street lights have been more and more used in the lighting of urban roads, industrial parks, green belts, squares and other places. It has the advantages of saving cable laying costs and saving electricity usage costs. With the development of lithium battery technology, its cost and charging management system are becoming more and more mature. It has great advantages as an energy processing device for solar street lamps. Its energy density is about 120~200Wh / kg, while the energy density of traditional lead-acid batteries Generally 40Wh / Kg. This makes miniaturization and integration of solar street lights possible. [0003] However, compared with traditional lead-acid batter...

AI Technical Summary

Problems solved by technology

If the solar street light is installed in a colder area, the lithium battery will be affected by the low temperature, and the capacity and life will be degraded sharply, especially during the charging process, the low temperature will easily lead to irreversible damage to the battery

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