Wind turbine blade integrated with photovoltaic power generation function

Abstract

The utility model discloses a wind driven generator blade of integrated photovoltaic power generation function, including blade body, self -cleaning flexible photovoltaic module, composite cable support, photovoltaic cable and wind light cooperation controller, the self -cleaning flexible photovoltaic module has at least one group, and is set up on the outer surface of blade body, the composite cable support is set up on the web inside blade body, and is located the region close to the SS surface of blade body, the input of photovoltaic cable and self -cleaning flexible photovoltaic module are connected, and the output and the lightning conductor of wind driven generator through composite cable support confluence after and through the through -hole of the blade root baffle reservation of wind driven generator to the outside wear, and the output of photovoltaic cable wears to the outside and is connected to wind light cooperation controller, the wind light cooperation controller is connected with the main machine of wind driven generator. The utility model has the advantages of simple structure, simple installation, reliable performance, cleaning free etc.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine blades, and in particular to a wind turbine blade that integrates photovoltaic power generation function. Background Technology

[0002] With the rapid development of new energy technologies, wind turbine blades integrating photovoltaic (PV) power generation have gradually attracted widespread attention due to their advantages in comprehensively utilizing solar and wind energy. However, existing wind turbine blades integrating PV power generation have many shortcomings in structural design and practical application. First, dust and snow easily accumulate on the surface of the PV panels, making cleaning difficult and severely affecting the power generation efficiency of the PV panels. In addition, existing large wind turbine blades integrating PV power generation also face many problems in installation and maintenance. For example, invention patent CN114576088A discloses a wind turbine generator with an integrated PV panel and wind turbine blade, which uses adhesive to attach a thin-film PV panel to the blade surface. However, this design has obvious drawbacks: the bonding strength between the adhesive and the PV panel and blade is difficult to determine, resulting in a cumbersome and time-consuming installation process, and it is also prone to damage during long-term use, further increasing maintenance difficulty and cost. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a wind turbine blade that integrates photovoltaic power generation function. It has the advantages of simple structure, simple installation, reliable performance, and no cleaning required. While maintaining the original performance of the wind turbine generator set, it realizes the efficient integration of wind and solar power generation.

[0004] The objective of this utility model can be achieved by adopting the following technical solutions:

[0005] A wind turbine blade integrating photovoltaic power generation includes a blade body, a self-cleaning flexible photovoltaic module, a composite cable bracket, a photovoltaic cable, and a wind-solar co-controller. At least one set of the self-cleaning flexible photovoltaic module is attached to the outer surface of the blade body. The self-cleaning flexible photovoltaic module and the blade body are integrally molded using a vacuum-assisted resin infusion process. The composite cable bracket is located on the web inside the blade body, near the SS surface of the blade body. The input end of the photovoltaic cable is connected to the self-cleaning flexible photovoltaic module, and its output end, after converging with the lightning protection conductor of the wind turbine through the composite cable bracket, extends outward through a pre-drilled hole in the blade root baffle of the wind turbine. The output end of the photovoltaic cable extends outward and connects to the wind-solar co-controller, which is connected to the main unit of the wind turbine. The wind-solar co-controller enables coordinated control of photovoltaic and wind power generation.

[0006] Furthermore, the self-cleaning flexible photovoltaic module includes an encapsulation structure and multiple battery cells. The encapsulation structure includes a self-cleaning nano-coating, an anti-reflection layer, and a conductive adhesive layer stacked sequentially from top to bottom. The multiple battery cells are arranged in a matrix on the lower surface of the conductive adhesive layer.

[0007] Furthermore, the gap between adjacent battery cells is ≤3mm, and the gap is filled with streamlined filler adhesive.

[0008] Furthermore, a metal mesh grid layer for collecting current is provided between the self-cleaning flexible photovoltaic module and the blade body, and the metal mesh grid is electrically connected to the heating control unit located in the main unit of the wind turbine.

[0009] Furthermore, the coverage area of ​​the self-cleaning flexible photovoltaic module accounts for 30% to 50% of the total surface area of ​​the blade body, and it is located in the range of 15% to 85% of the blade body spanwise and in the range of 20% to 75% of the blade body chordwise.

[0010] Furthermore, it also includes a blade root cable sensing bracket, which is installed at the blade root of the wind turbine and located between the blade root baffle and the wind-solar co-controller. The blade root cable sensing bracket has a first channel for passing through the photovoltaic cable and a second channel for passing through the lightning protection conductor. The photovoltaic cable and the lightning protection conductor pass outward through the through hole reserved in the blade root baffle and pass through the first channel and the second channel respectively. Each channel is equipped with a temperature sensor for monitoring the cable temperature and an impedance monitoring module for monitoring the cable impedance change. The temperature sensor and the impedance monitoring module are respectively connected to the control system of the wind turbine.

[0011] Furthermore, a limiting device is provided between the leaf root cable sensing bracket and the leaf root baffle to prevent the photovoltaic cable and lightning protection conductor from rotating.

[0012] Furthermore, the wind-solar co-controller is located inside the main unit of the wind turbine.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. This utility model has the advantages of simple structure and simple installation. The self-cleaning flexible photovoltaic module and blades are formed in one step by vacuum-assisted resin injection process, which has reliable performance. Moreover, the surface of the self-cleaning flexible photovoltaic module adopts a three-layer encapsulation structure, with the upper layer being a self-cleaning nano-coating, the middle layer being an anti-reflection layer, and the bottom layer being a conductive adhesive layer. It has excellent self-cleaning effect. Snow is melted through the metal mesh grid layer, and at the same time, dust and snow will be carried away or washed away by the wind during the rotation of the blades.

[0015] 2. The self-cleaning flexible photovoltaic module of this utility model has an optimal laying area designed through CFD simulation. While maintaining the original aerodynamic performance of the blades, it realizes wind and solar power generation, significantly improving power generation efficiency and energy utilization. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a wind turbine blade that integrates photovoltaic power generation.

[0017] Figure 2 This is a schematic diagram of the internal structure of a wind turbine blade that integrates photovoltaic power generation.

[0018] Figure 3 This is a schematic diagram of the structure of a self-cleaning flexible photovoltaic module.

[0019] Figure 4 This is a schematic diagram showing the optimal placement area for a self-cleaning flexible photovoltaic module on a blade.

[0020] Figure 5 This is a schematic diagram of the structure of the leaf root cable sensing bracket. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 5 As shown, this embodiment provides a wind turbine blade with integrated photovoltaic power generation function, including blade body 1, self-cleaning flexible photovoltaic module 2, composite cable bracket 3, photovoltaic cable 4 and wind-solar co-controller. Blade body 1 has the aerodynamic shape structure of a general wind turbine blade.

[0023] At least one set of self-cleaning flexible photovoltaic modules 2 is attached to the outer surface of the blade body 1. The self-cleaning flexible photovoltaic modules 2 and the blade body 1 are formed in one step using a vacuum-assisted resin infusion process. That is, before laying the outer skin glass fiber layer 103, the pre-bent self-cleaning flexible photovoltaic modules 2 are positioned by vacuum adsorption with a position error of ≤1.5mm to ensure that the flexible photovoltaic modules are completely attached to the surface of the blade body 1. The composite cable bracket 3 is set on the web 101 inside the blade body 1 and is located in the area close to the SS surface of the blade body 1. The input end of the photovoltaic cable 4 is connected to the self-cleaning flexible photovoltaic module 2, and its output end and the lightning protection wire 5 of the wind turbine are joined through the composite cable bracket 3 and then pass out through the through hole reserved in the blade root baffle 102 of the wind turbine. The output end of the photovoltaic cable 4 is connected to the wind-solar co-controller after passing out. The wind-solar co-controller is set inside the main unit of the wind turbine and connected to the main unit of the wind turbine. The wind-solar co-controller realizes the coordinated control of photovoltaic power generation and wind power generation.

[0024] The self-cleaning flexible photovoltaic module 2 includes an encapsulation structure and multiple battery cells 204. The encapsulation structure includes a self-cleaning nano-coating 201, an anti-reflection layer 202, and a conductive adhesive layer 203 stacked sequentially from top to bottom. The multiple battery cells 204 are arranged in a matrix on the lower surface of the conductive adhesive layer 203. The gap between adjacent battery cells 204 is ≤3mm, and the gap is filled with a streamlined filler adhesive.

[0025] A metal mesh grid layer 6 for collecting current is provided between the self-cleaning flexible photovoltaic module 2 and the blade body 1. The metal mesh grid is electrically connected to the heating control unit located in the main unit of the wind turbine.

[0026] The laying area of ​​the self-cleaning flexible photovoltaic module 2 needs to meet the aerodynamic performance constraints. The coverage area of ​​its optimal laying area 104 accounts for 30% to 50% of the total surface area of ​​the blade body 1, and it is located in the range of 15% to 85% of the span of the blade body 1 and in the range of 20% to 75% of the chord of the blade body 1.

[0027] It also includes a blade root cable sensing bracket 7, which is set at the blade root of the wind turbine and located between the blade root baffle and the wind-solar co-controller. The blade root cable sensing bracket 7 has a first channel 701 for passing through the photovoltaic cable 4 and a second channel 702 for passing through the lightning protection conductor 5. The photovoltaic cable 4 and the lightning protection conductor 5 pass out through the through hole reserved in the blade root baffle and pass through the first channel and the second channel respectively. Each channel is equipped with a temperature sensor 8 for monitoring the cable temperature and an impedance monitoring module (not shown in the figure) for monitoring the cable impedance change. The temperature sensor and the impedance monitoring module are respectively connected to the control system of the wind turbine.

[0028] A limiting device 9 for preventing the photovoltaic cable 4 and the lightning protection conductor 5 from rotating is provided between the leaf root cable sensing bracket 7 and the leaf root baffle 102.

[0029] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. A wind turbine blade integrating photovoltaic power generation function, characterized in that: The system includes a blade body, a self-cleaning flexible photovoltaic module, a composite cable bracket, a photovoltaic cable, and a wind-solar co-controller. At least one set of the self-cleaning flexible photovoltaic module is attached to the outer surface of the blade body. The self-cleaning flexible photovoltaic module and the blade body are molded in one piece using a vacuum-assisted resin infusion process. The composite cable bracket is located on the web inside the blade body, near the SS surface of the blade body. The input end of the photovoltaic cable is connected to the self-cleaning flexible photovoltaic module, and its output end, after converging with the lightning protection conductor of the wind turbine through the composite cable bracket, extends outward through a pre-drilled hole in the blade root baffle of the wind turbine. The output end of the photovoltaic cable then connects to the wind-solar co-controller, which is connected to the main unit of the wind turbine. The wind-solar co-controller enables coordinated control of photovoltaic and wind power generation.

2. The wind turbine blade integrating photovoltaic power generation function according to claim 1, characterized in that: The self-cleaning flexible photovoltaic module includes an encapsulation structure and multiple battery cells. The encapsulation structure includes a self-cleaning nano-coating, an anti-reflection layer, and a conductive adhesive layer stacked sequentially from top to bottom. The multiple battery cells are arranged in a matrix on the lower surface of the conductive adhesive layer.

3. The wind turbine blade integrating photovoltaic power generation function according to claim 2, characterized in that: The gap between adjacent battery cells is ≤3mm, and the gap is filled with streamlined filler adhesive.

4. The wind turbine blade integrating photovoltaic power generation function according to claim 1, characterized in that: A metal mesh grid layer for collecting current is provided between the self-cleaning flexible photovoltaic module and the blade body. The metal mesh grid is electrically connected to the heating control unit located in the main unit of the wind turbine.

5. The wind turbine blade integrating photovoltaic power generation function according to claim 1, characterized in that: The self-cleaning flexible photovoltaic module covers an area of ​​30% to 50% of the total surface area of ​​the blade body, and is located in the range of 15% to 85% of the blade body spanwise and in the range of 20% to 75% of the blade body chordwise.

6. The wind turbine blade integrating photovoltaic power generation function according to claim 1, characterized in that: It also includes a blade root cable sensing bracket, which is installed at the blade root of the wind turbine and located between the blade root baffle and the wind-solar co-controller. The blade root cable sensing bracket has a first channel for passing through the photovoltaic cable and a second channel for passing through the lightning protection conductor. The photovoltaic cable and the lightning protection conductor pass outward through the through hole reserved in the blade root baffle and pass through the first channel and the second channel respectively. Each channel is equipped with a temperature sensor for monitoring the cable temperature and an impedance monitoring module for monitoring the cable impedance change. The temperature sensor and the impedance monitoring module are respectively connected to the control system of the wind turbine.

7. The wind turbine blade integrating photovoltaic power generation function according to claim 6, characterized in that: A limiting device is provided between the leaf root cable sensing bracket and the leaf root baffle to prevent the photovoltaic cable and lightning protection conductor from rotating.

8. The wind turbine blade integrating photovoltaic power generation function according to claim 1, characterized in that: The wind-solar co-controller is located inside the main unit of the wind turbine.

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