CN-224233643-U - Photovoltaic self-cooling device

Abstract

The disclosure provides a photovoltaic self-cooling device, which comprises a heat dissipation mechanism and a thermoelectric conversion mechanism, wherein the heat dissipation mechanism is arranged to be capable of accelerating heat dissipation of a photovoltaic panel, the thermoelectric conversion mechanism is electrically connected with the heat dissipation mechanism and is capable of converting heat energy of solar heat radiation into electric energy to be supplied to the heat dissipation mechanism, and the thermoelectric conversion mechanism has different power generation efficiencies along with the height of the solar heat radiation so as to control the start and stop of the heat dissipation mechanism. Through above-mentioned technical scheme, the photovoltaic self-cooling device that this disclosure provided converts solar thermal radiation's heat energy into electric energy through setting up thermoelectric conversion mechanism, supplies to cooling mechanism, and solar thermal radiation's intensity is directly proportional with the temperature of photovoltaic board, thermoelectric conversion mechanism's generating efficiency, consequently controls cooling mechanism's opening and closing through thermoelectric conversion mechanism's generating efficiency, need not set up the detector in addition and provide extra power for cooling mechanism, simple structure, the cost is lower.

Inventors

• SHI MING
• GAO CHAO
• YAN YONGHAI
• Xing duo

Assignees

• 东旭科技集团有限公司

Dates

Publication Date

20260512

Application Date

20241115

Claims (5)

1. 1. A photovoltaic self-cooling device, comprising: A heat dissipation mechanism configured to be capable of accelerating heat dissipation of the photovoltaic panel (5), and The thermoelectric conversion mechanism (4) is electrically connected with the heat dissipation mechanism and can convert heat energy of solar heat radiation into electric energy to be supplied to the heat dissipation mechanism, and the thermoelectric conversion mechanism (4) has different power generation efficiencies along with the height of the solar heat radiation so as to control the start and stop of the heat dissipation mechanism.
2. 2. The photovoltaic self-cooling device according to claim 1, wherein the heat dissipation mechanism comprises a heat dissipation fan (1), the heat dissipation fan (1) is arranged on one side of the photovoltaic panel (5) and is electrically connected with the thermoelectric conversion mechanism (4), and the heat dissipation fan (1) is opened and closed according to the power generation efficiency of the thermoelectric conversion mechanism (4) and has different wind power according to the power generation efficiency of the thermoelectric conversion mechanism (4) when being opened.
3. 3. The photovoltaic self-cooling device according to claim 2, wherein the heat dissipation mechanism further comprises a liquid cooling tube (2), the liquid cooling tube (2) is attached to the back surface of the photovoltaic panel (5), and the heat dissipation fan (1) can reduce the temperature of the refrigerant in the liquid cooling tube (2) in an on state so as to accelerate heat dissipation of the photovoltaic panel (5).
4. 4. A photovoltaic self-cooling device according to claim 3, wherein the heat dissipation mechanism further comprises a plurality of heat dissipation fins (6), the liquid cooling tube (2) extends towards the direction of the heat dissipation fan (1) and protrudes out of the photovoltaic panel (5) to form an extending end (21), the extending end (21) is connected with the heat dissipation fins (6), and the air flow generated by the heat dissipation fan (1) flows through the heat dissipation fins (6) to take away the heat of the liquid cooling tube (2) at the extending end (21).
5. 5. The photovoltaic self-cooling device according to claim 4, wherein a plurality of the cooling fins (6) are arranged at the air outlet of the cooling fan (1) side by side at intervals, and one ends of the cooling fins (6) far away from the cooling fan (1) are mutually connected and are partially sleeved outside the extending ends (21).

Description

Photovoltaic self-cooling device Technical Field The disclosure relates to the technical field of photovoltaic power generation, in particular to a photovoltaic self-cooling device. Background When the solar heat radiation is high, the temperature of the photovoltaic panel is increased, so that the power generation efficiency of the photovoltaic panel is reduced, and therefore, when the solar heat radiation is high, the photovoltaic panel needs to be cooled. The Chinese patent CN209057173U provides a ventilation heat-dissipation type energy storage solar photovoltaic panel, an anemometer and a temperature sensor are arranged, and when the temperature exceeds a preset value and the wind speed does not reach the preset value, a controller controls a heat dissipation fan to be started so as to dissipate heat of a heat dissipation plate. The sensor is required to detect the temperature and control the opening and closing of the cooling fan according to the temperature, and additional power is required to supply to the sensor and the cooling fan, so that the structure is complex and the cost is high. Disclosure of utility model The technical problem to be solved by the present disclosure is that a sensor needs to be set to detect temperature and control the opening and closing of the cooling fan according to the temperature, and additional power is required to supply to the sensor and the cooling fan, which is complex in structure and high in cost. To solve the above technical problem, an embodiment of the present disclosure provides a photovoltaic self-cooling device, including: a heat dissipation mechanism configured to accelerate heat dissipation of the photovoltaic panel, and The thermoelectric conversion mechanism is electrically connected with the heat dissipation mechanism and can convert heat energy of solar heat radiation into electric energy to be supplied to the heat dissipation mechanism, and the thermoelectric conversion mechanism has different power generation efficiencies along with the height of the solar heat radiation so as to control the on-off of the heat dissipation mechanism. In some embodiments, the heat dissipation mechanism includes a heat dissipation fan, the heat dissipation fan is disposed on one side of the photovoltaic panel and is electrically connected to the thermoelectric conversion mechanism, the heat dissipation fan is turned on and off according to the power generation efficiency of the thermoelectric conversion mechanism, and has different wind forces according to the power generation efficiency of the thermoelectric conversion mechanism when the heat dissipation fan is turned on. In some embodiments, the heat dissipation mechanism further includes a liquid cooling tube attached to the back surface of the photovoltaic panel, and the cooling fan can reduce the temperature of the refrigerant in the liquid cooling tube in the on state to accelerate heat dissipation of the photovoltaic panel. In some embodiments, the heat dissipation mechanism further includes a plurality of heat dissipation fins, the liquid cooling tube extends in a direction of the heat dissipation fan and extends out of the photovoltaic panel to form an extending end, the extending end is connected with the heat dissipation fins, and an air flow generated by the heat dissipation fan flows through the heat dissipation fins to take away heat of the liquid cooling tube at the extending end. In some embodiments, a plurality of cooling fins are arranged at the air outlet of the cooling fan at intervals side by side, and one ends of the cooling fins far away from the cooling fan are connected with each other and are partially sleeved outside the extending ends. Through above-mentioned technical scheme, the photovoltaic self-cooling device that this disclosure provided converts solar thermal radiation's heat energy into electric energy through setting up thermoelectric conversion mechanism, supplies to cooling mechanism, and solar thermal radiation's intensity is directly proportional with the temperature of photovoltaic board, thermoelectric conversion mechanism's generating efficiency, consequently controls cooling mechanism's opening and closing through thermoelectric conversion mechanism's generating efficiency, need not set up the detector in addition and provide extra power for cooling mechanism, simple structure, the cost is lower. Drawings In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art. FIG. 1 is a schematic view of the structure of the front side of a photovoltaic panel dis