Power generation conversion device for solar water heater

Abstract

The invention discloses a power generation conversion device for a solar water heater. In the power generation conversion device, a thermoelectric power generation material of the power generation solar water heater is divided into a left power generation piece group L and a right power generation piece group R. The positive electrode of the left power generation piece group L is connected with a lower-path center joint of a converter K, and the negative electrode of the left power generation piece group L is connected with an upper-path left joint of the converter K and connected with the negative electrode of a rechargeable battery E by an ammeter A. The negative electrode of the right power generation piece group R is connected with a lower-path right joint and the upper-path center joint of the converter K, and the positive electrode of the right power generation piece group R is connected with the lower-path left joint of the converter K and the positive electrode of a diode D. The negative electrode of the diode D is connected with the positive electrode of the rechargeable battery E. The device also comprises an electronic control circuit. When the temperature of hot water in the water heater is not high, the converter K turns to a right side and enters a serial output connection status; and when the temperature of the hot water in the water heater is slightly high, the converter K turns to a left side and enters a parallel output connection status, so rechargeable battery charging speed is increased and rechargeable battery charging efficiency is improved. The device is used for improving the thermoelectric conversion efficiency of the thermoelectric power generation solar water heater.

Description

technical field [0001] The invention relates to a thermoelectric power generation solar water heater, in particular to a power generation conversion device of the solar water heater. Background technique [0002] There are a lot of solar water heaters owned by the society, but the number of daily use of solar water heaters and the total time of use by each family are relatively small compared to the idle time. The number of times of use per week is about 1-2 times. The thermal energy of the hot water in the solar water heater is lost in vain. Although the Chinese patent application with application number 201110039352.4 has proposed several technical solutions to solve the above problems, the utilization rate of thermoelectric power generation needs to be further improved. This is because the temperature of the hot water inside the solar water heater changes greatly (related to factors such as sunlight, outdoor air temperature, and hot water use), and the corresponding temp...

AI Technical Summary

Problems solved by technology

[0002] There are a lot of solar water heaters owned by the society, but the number of daily use of solar water heaters and the total time of use by each family are relatively small compared to the idle time. The number of times of use per week is about 1-2 times. The thermal energy of the hot water in the solar water heater is lost in vain

The Chinese patent application with the application number 201110039352.4 has proposed several technical solutions to solve the above problems, but the utilization rate of thermoelectric power generation needs to be further improved

This is because the temperature of the hot water inside the solar water heater changes greatly (related to factors such as sunlight, outdoor air temperature, and hot water use), and the corresponding temperature difference between the hot water and the external environment also changes greatly, which leads to the temperature difference of the thermoelectric power generation material. The power generation voltage also varies greatly, and sometimes the difference can be more than doubled, which leads to a large change in the working conditions of charging the rechargeable battery. When the temperature difference between the hot water and the external environment is large, the temperature difference power generation voltage will be too high, making the temperature difference The loss of generated electricity in the internal resistance of thermoelectric power generation materials increases, which is not conducive to the efficiency of thermoelectric power generation

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