Photovoltaic module temperature control system

Abstract

The utility model discloses a photovoltaic module temperature control system, which relates to the field of new energy and comprises a parallel distribution box, one side of the parallel distribution box is connected with a plurality of parallel photovoltaic devices, and the other side of the parallel distribution box is connected with one end of a heat exchange device through a circulating power device. The other end of the heat exchange device is connected with tail end heat utilization equipment; the photovoltaic equipment comprises a photovoltaic assembly, a branch pipe, a temperature sensor and a flow control valve, and the temperature sensor is arranged on the photovoltaic assembly. The solar photo-thermal and solar photoelectric composite utilization can be performed on the premise of not consuming extra market electric power, so that the comprehensive utilization efficiency of solar energy is greatly improved; through temperature control, the temperature of the photovoltaic module can be effectively controlled within the highest efficiency interval range, the generating capacity of the photovoltaic system is improved, the service life of the photovoltaic module is prolonged, and solar photo-thermal energy is additionally obtained to be used by tail end heat utilization equipment.

Description

Technical Field

[0001] The utility model relates to the field of new energy, in particular to a photovoltaic component temperature control system. Background Art

[0002] The research on the material properties of photovoltaic modules has been very mature, and the cost of improving module efficiency through material performance is getting higher and higher. In order to reduce production costs and improve system efficiency, module manufacturers have an increasing demand for improving module efficiency.

[0003] Component manufacturers use various means such as material optimization, structural optimization, and construction optimization to reduce the temperature of components. However, this method cannot be popularized because the cost of optimizing material properties remains high, the optimization effect of structural form is not good, and construction optimization is difficult to control and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a photovoltaic module temperature control system to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A photovoltaic module temperature control system includes a parallel distribution box, one side of which is connected to a plurality of parallel photovoltaic devices, the other side of which is connected to one end of a heat exchange device through a circulating power device, and the other end of the heat exchange device is connected to a terminal heat-using device;

[0007] The photovoltaic equipment includes photovoltaic modules, branch pipes, temperature sensors, and flow control valves. The photovoltaic modules are provided with temperature sensors and refrigerant pipelines. The refrigerant pipelines on the photovoltaic modules are connected to the refrigerant pipelines connected to the parallel distribution boxes through the flow control valves and branch pipes in turn.

[0008] As a further solution of the utility model: the refrigerant in the refrigerant pipeline is ethylene glycol solution.

[0009] As a further solution of the utility model: the refrigerant pipeline on the photovoltaic module is designed on the back of the photovoltaic module, and the refrigerant pipeline on the photovoltaic module is arranged in parallel or in a U-shaped arrangement.

[0010] As a further solution of the utility model: the number of parallel photovoltaic devices connected to the parallel distribution box does not exceed eight.

[0011] As a further solution of the utility model: the photovoltaic module temperature control system also includes a power system power supply, and the power system power supply obtains voltage through the photovoltaic module.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can carry out the combined utilization of solar thermal energy and solar photovoltaic energy without consuming additional market electricity, greatly improving the comprehensive utilization efficiency of solar energy, and can effectively control the temperature of photovoltaic modules within the highest efficiency range through temperature control, thereby increasing the power generation of the photovoltaic system and the service life of the photovoltaic modules, and additional solar thermal energy is obtained for use by terminal heating equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The schematic diagram of a photovoltaic module temperature control system.

[0014] Figure 2 Schematic diagram of the layout of refrigerant pipes in photovoltaic modules.

[0015] In the figure: 1-photovoltaic module, 2-refrigerant pipeline, 3-parallel distribution box, 4-branch pipe, 5-circulation power device, 6-heat exchange device, 7-terminal heat equipment, 8-temperature sensor, 9-flow control valve. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 A photovoltaic module temperature control system includes a parallel distribution box 3, one side of the parallel distribution box 3 is connected to a plurality of parallel photovoltaic devices, the other side of the parallel distribution box 3 is connected to one end of a heat exchange device 6 through a circulating power device 5, and the other end of the heat exchange device 6 is connected to a terminal heat device 7;

[0018] The photovoltaic equipment includes a photovoltaic module 1, a branch pipe 4, a temperature sensor 8, and a flow control valve 9. The photovoltaic module 1 is provided with a temperature sensor 8 and a refrigerant pipe 2. The refrigerant pipe 2 on the photovoltaic module 1 is connected to the refrigerant pipe 2 connected to the parallel distribution box 3 through the flow control valve 9 and the branch pipe 4 in turn.

[0019] In the specific embodiment: see Figure 1 The refrigerant (ethylene glycol solution) used for cooling the components is transported to the photovoltaic components 1 through the refrigerant pipe 2. The refrigerant pipe 2 on the photovoltaic component 1 is designed on the back of the original photovoltaic component 1. The refrigerant pipe 2 is arranged in a parallel or U-shaped shape. The flow of refrigerant in the refrigerant pipe cools the components while utilizing solar thermal energy.

[0020] Different photovoltaic devices are connected in parallel through branch pipes 4. The diameter of the refrigerant pipe 2 and the configuration of the power device are determined according to the number of series components, the length of the pipeline, the number of local resistance components, etc. Different parallel photovoltaic devices are connected through parallel distribution boxes 3. The total number of branches connected to each parallel distribution box 3 is recommended to be no more than 8. The power system power supply is directly provided by the power generation of the photovoltaic components 1, and no additional market electricity is consumed.

[0021] The temperature of each photovoltaic module 1 is controlled by the temperature sensor 8 and the flow control valve 9, so that the temperature of the photovoltaic module 1 is always kept within the highest efficiency range. The heat recovered by the refrigerant can be used as an auxiliary heat source for domestic hot water or winter heating according to the amount of recovered heat and the use scenario, or to provide heat for other heat-using equipment (circulation power device 5, heat exchange device 6, terminal heat-using equipment 7).

[0022] In this example: See Figure 1 The refrigerant in the refrigerant pipe 2 is ethylene glycol solution.

[0023] As a traditional refrigerant, ethylene glycol is widely used in the refrigeration industry. Enterprises choose it because of its low price and easy availability. Ethylene glycol is used as a refrigerant in many domestic systems.

[0024] In this example: See Figure 1 and Figure 2 The refrigerant pipe 2 on the photovoltaic module 1 is designed on the back of the photovoltaic module 1, and the refrigerant pipe 2 on the photovoltaic module 1 is arranged in a parallel shape or a U-shaped shape.

[0025] like Figure 2 As shown, the refrigerant pipes 2 on the photovoltaic module 1 are arranged in parallel or in a U-shaped pattern, which can ensure that the refrigerant flows through a larger area of ​​the refrigerant pipes 2 on the photovoltaic module 1, thereby effectively cooling the photovoltaic module 1.

[0026] In this example: See Figure 1 , the number of parallel photovoltaic devices connected to the parallel distribution box 3 does not exceed eight.

[0027] The refrigerant flow in the refrigerant pipeline 2 is limited, and there are too many photovoltaic devices connected in parallel, making it difficult to effectively reduce the temperature on the photovoltaic module 1.

[0028] In this example: See Figure 1 The photovoltaic component 1 temperature control system also includes a power system power supply, which obtains voltage through the photovoltaic component 1.

[0029] The voltage is obtained through the photovoltaic module 1, and no additional market electricity needs to be consumed.

[0030] The working principle of the utility model is: the refrigerant takes away the heat from the photovoltaic module 1 through the refrigerant pipe 2, the temperature of the photovoltaic module 1 is detected by the temperature sensor 8, and the refrigerant flow through the photovoltaic module 1 is changed by the flow control valve 9 to control the temperature of the photovoltaic module 1, so that the temperature of the photovoltaic module 1 is always kept within the range of the highest efficiency. The flow taken away by the refrigerant passes through the parallel distribution box 3, the circulation power device 5, and the heat exchange device 6 to reach the terminal heat-using device 7 for use by the terminal heat-using device 7.

[0031] The utility model can combine solar thermal energy with solar photovoltaic energy without consuming additional market electricity, greatly improving the comprehensive utilization efficiency of solar energy. The temperature of the photovoltaic module can be effectively controlled within the highest efficiency range through temperature control, thereby increasing the power generation of the photovoltaic system and the service life of the photovoltaic module, and obtaining additional solar thermal energy. The appearance and system architecture of the utility model can be adjusted according to the size of the system and the usage scenario.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic module temperature control system, characterized in that: The photovoltaic module temperature control system includes a parallel distribution box, one side of which is connected to a plurality of parallel photovoltaic devices, the other side of which is connected to one end of a heat exchange device through a circulating power device, and the other end of the heat exchange device is connected to a terminal heat-using device; The photovoltaic equipment includes photovoltaic modules, branch pipes, temperature sensors, and flow control valves. The photovoltaic modules are provided with temperature sensors and refrigerant pipelines. The refrigerant pipelines on the photovoltaic modules are connected to the refrigerant pipelines connected to the parallel distribution boxes through the flow control valves and branch pipes in turn.

2. The photovoltaic module temperature control system according to claim 1, characterized in that: The refrigerant in the refrigerant pipeline is ethylene glycol solution.

3. The photovoltaic module temperature control system according to claim 1 or 2, characterized in that: The refrigerant pipeline on the photovoltaic module is designed on the back of the photovoltaic module, and the refrigerant pipeline on the photovoltaic module is arranged in a parallel shape or a U-shaped shape.

4. The photovoltaic module temperature control system according to claim 1, characterized in that: The parallel distribution box shall connect no more than eight parallel photovoltaic devices.

5. The photovoltaic module temperature control system according to claim 1, characterized in that: The photovoltaic module temperature control system also includes a power system power supply, which obtains voltage through the photovoltaic module.

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