Power supply system, blade assembly and wind generating set

Abstract

The utility model provides a power supply system, a blade assembly and a wind generating set. The power supply system is installed on a blade of the wind generating set, the power supply system is used for supplying power to an electronic device installed on the inner side of the blade of the wind generating set, and the power supply system comprises a solar module which is installed on the outer surface of the blade and comprises a solar panel; an energy storage module mounted on an inner side of the blade and connected to the electronic device, and configured to be capable of receiving and storing electric energy from the solar module; and a wireless charging assembly connected between the solar module and the energy storage module and configured to wirelessly transmit electric energy received from the solar module. According to the power supply system provided by the utility model, the solar energy self-power supply of the electronic device on the inner side of the blade can be realized by combining solar energy with a wireless charging technology, so that the electronic device can be ensured to work continuously for a long time, and the lightning stroke risk can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind power generation, in particular to a power supply system installed on the blade of wind turbine generator unit, a blade assembly and a wind turbine generator unit. BACKGROUND

[0002] In order to ensure the safe and reliable and stable operation of the wind turbine generator unit, it is necessary to monitor the state of the wind turbine generator blade. Therefore, electronic devices such as sensors or measuring instruments are usually installed on the inner side of the blade of the wind turbine generator unit to monitor the state of the blade of the wind turbine generator unit.

[0003] The existing sensors or measuring instruments installed in the blade usually adopt wired power supply or battery power supply. In the case of wired power supply of the sensor or measuring instrument, due to the lightning protection requirement, the sensor or measuring instrument needs to be installed only in the area close to the blade root, i.e. in the area far away from the blade tip, which leads to a serious limitation of the instrument deployment area. In addition, in the case of battery power supply of the sensor or measuring instrument, the continuous working time of the sensor or measuring instrument is very limited, which will affect its working efficiency and increase the artificial maintenance cost.

[0004] Therefore, how to improve the power supply mode of the electronic device installed on the inner side of the blade is an urgent technical problem to be solved to ensure the long-term operation of the electronic device while reducing the risk of lightning strike. SUMMARY

[0005] The utility model aims at providing a power supply system installed on the blade of a wind turbine generator unit and a blade assembly and a wind turbine generator unit comprising the power supply system, wherein the power supply system can realize solar self-power supply of the electronic device in the blade through solar energy combined with wireless charging technology, so that the electronic device can work continuously for a long time and the risk of lightning strike can be reduced.

[0006] According to an aspect of the utility model, a power supply system is provided, which is installed on the blade of a wind turbine generator unit, wherein the power supply system is used to supply power to the electronic device installed on the inner side of the blade of the wind turbine generator unit, and comprises: a solar module installed on the outer surface of the blade and comprising a solar panel; an energy storage module installed on the inner side of the blade and connected to the electronic device, and configured to receive and store electric energy from the solar module; and a wireless charging assembly connected between the solar module and the energy storage module, and configured to receive the electric energy from the solar module through wireless transmission.

[0007] Preferably, the wireless charging assembly can include a wireless transmission module installed on an outer surface of the blade and connected to the solar module, and a wireless reception module installed on an inner surface of the blade at least partially opposite to the wireless transmission module and connected to the energy storage module to receive electromagnetic energy from the wireless transmission module by electromagnetic coupling and transmit the electromagnetic energy to the energy storage module.

[0008] Preferably, the wireless transmission module and the wireless reception module can each include a lightning protection device.

[0009] Preferably, the energy storage module can include a battery, an encapsulation portion formed with an insulating resin and configured to cover the battery, and an explosion-proof housing in which the battery and the encapsulation portion are disposed.

[0010] Preferably, the power supply system can further include a controller installed on an inner side of the blade and connected upstream of the energy storage module to control a charging process and a discharging process of the battery.

[0011] Preferably, the solar module can further include a transparent first protective layer covering the solar panel.

[0012] Preferably, the wireless charging assembly can further include a second protective layer covering the wireless transmission module.

[0013] Preferably, the power supply system can further include a heat and fireproof member installed on an area of an outer surface of the blade on which the solar module is installed.

[0014] Preferably, the power supply system can further include a heat and fireproof member, wherein the heat and fireproof member is installed on an area of an outer surface of the blade on which the solar module and the wireless transmission module are installed and an area of an inner surface of the blade on which the wireless reception module is installed.

[0015] According to another aspect of the present application, there is provided a blade assembly for a wind turbine generator, the blade assembly including an electronic device installed on an inner side of a blade and a power supply system as described above.

[0016] According to still another aspect of the present application, there is provided a wind turbine generator including a power supply system as described above.

[0017] The power supply system according to the utility model can realize solar self-power supply of the electronic device in the blade through solar energy combined with wireless charging technology, so that it can ensure that the electronic device can work continuously for a long time, thereby reducing the artificial maintenance cost. In addition, the power supply system according to the utility model can reduce the lightning risk, improve the installation freedom of the electronic assembly in the blade, and can have improved reliability.

[0018] In addition, the blade assembly according to the utility model comprises the power supply system as described above, so that the blade structure can be avoided from being damaged, and the maintenance cost of the blade assembly can be reduced.

[0019] In addition, the wind turbine generator set according to the utility model comprises the power supply system as described above, so that during the operation of the wind turbine generator set, the maintenance workload of the set can be reduced, and the stability and reliability of the operation of the set can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects and features of the present application will become more apparent from the following description of embodiments thereof taken in conjunction with the accompanying drawings, in which:

[0021] FIG. 1A And FIG. 1B is a structural schematic view of an existing blade assembly comprising a power supply system;

[0022] FIG. 2 is a structural schematic view of a blade assembly comprising a power supply system according to an embodiment of the utility model;

[0023] FIG. 3 is a schematic view of the specific structure of a part of the blade assembly according to an embodiment of the utility model.

[0024] REFERENCE NUMERALS:

[0025] 10-blade; 11-electronic device;

[0026] 110-solar module; 111-solar panel; 112-first protective layer;

[0027] 120-energy storage module; 121-battery; 122-encapsulation part; 123-explosion-proof housing

[0028] 130-wireless charging assembly; 131-wireless transmitting module; 1311-transmitting coil; 132-second protective layer; 133-wireless receiving module; 1331-receiving coil; 134-lightning protection device;

[0029] 140-controller;

[0030] 150-heat insulation and fireproof member. DETAILED DESCRIPTION

[0031] For those skilled in the art to better understand the technical concept of the present application, the specific embodiments of the present application will be described clearly, completely and in detail below in conjunction with the drawings. It should be clear that the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the present application merely for the purpose of describing specific embodiments thereof is not intended to be limiting of the present application. Those of ordinary skill in the art can understand the specific meanings of the terms used herein in the present application according to specific circumstances.

[0033] It will be understood that, although terms such as "first", "second", etc. can be used herein to describe various elements, these elements will not be limited by these terms. Rather, these terms are only used to distinguish one element from another. Therefore, the first element referred to in the exemplary embodiments described herein can also be referred to as the second element without departing from the teachings of the exemplary embodiments.

[0034] For ease of description, "inner", "outer", "upper", "lower" referred to hereinafter are consistent with the inner, outer, upper, lower directions of the drawings themselves, but do not limit the structure of the present application.

[0035] In addition, throughout the specification, when an element is described as "disposed on" another element, "connected to" another element or "combined to" another element, the element can be directly "disposed on" the other element, directly "connected to" the other element or directly "combined to" the other element, or there can be one or more other elements between them.

[0036] FIG. 1A And FIG. 1B is a schematic view showing the structure of an existing blade assembly including a power supply system.

[0037] As FIG. 1A shown, in the existing wind turbine generator set, the sensing or measuring instruments installed in the blade 10 are usually powered and communicated by wired power supply, but are vulnerable to lightning, so in order to meet the lightning protection requirements, the sensing or measuring instruments are usually limited to be installed in the area close to the blade root (i.e. the area far away from the blade tip), which leads to a serious limitation of the equipment deployment area.

[0038] In addition, in order to better protect against lightning, such as FIG. 1B As shown, the sensor or measuring instrument installed in the blade 10 can be powered by a battery 121. However, in this case, the continuous operating time of the sensor or measuring instrument is limited by the capacity of the battery 121, resulting in a shortened continuous operating time or the need to reduce the performance of the sensor or measuring instrument to extend the operating time. This affects test efficiency and increases labor and maintenance costs.

[0039] Alternatively, the sensor or measuring instrument may be mounted outside the blade 10. In this case, the sensor or measuring instrument may be powered by the battery 121 and supplemented by solar energy. However, since the interior of the blade 10 is sealed and generally dark, solar energy cannot power the sensor or measuring instrument within the blade 10.

[0040] The present invention aims to overcome the above shortcomings, namely, to solve the power supply problem of electronic devices installed in the blades of a wind turbine. The present invention aims to provide a power supply assembly for powering electronic devices in the blades of a wind turbine, as well as a blade assembly and a wind turbine including the wireless power supply assembly.

[0041] In the following, reference will be made to FIG. 2 to FIG. 3 A power supply system according to an embodiment of the present invention is described in detail.

[0042] The power supply system according to an embodiment of the present invention can be installed on a blade 10 of a wind turbine generator and is used to power an electronic device 11 installed inside the blade 10 of the wind turbine generator. As an example, the electronic device 11 can be a sensor or measuring instrument, a monitoring device, etc. that performs measurement and control tasks.

[0043] like FIG. 2 and FIG. 3 As shown, in this embodiment, the power supply system may include a solar module 110 , an energy storage module 120 and a wireless charging component 130 .

[0044] Specifically, the solar module 110 is mounted on the outer surface of the blade 10 and includes a solar panel 111. The solar module 110 can be mounted at any position on the outer surface of the blade 10 as needed. Preferably, the solar module 110 can be mounted near the electronic device 11. The type of solar panel 111 is not particularly limited, and the solar panel 111 can be appropriately selected based on the power consumption of the electronic device 11, etc. For example, a solar panel 111 of an appropriate area can be selected based on the power consumption of the electronic device 11. Preferably, the solar panel 111 can be a thin-film solar flexible plate to better fit the appearance of the blade 10.

[0045] The energy storage module 120 is installed at the inner side of the blade 10 and connected to the electronic device 11, and is configured to be able to receive and store electric energy from the solar module 110. Thus, the energy storage module 120 can be charged by solar energy to prolong the continuous working time of the electronic device 11 and reduce the cost of manual maintenance.

[0046] As shown in FIG. 3 The energy storage module 120 can include a battery 121, an encapsulation 122, and an explosion-proof shell 123. The battery 121 is used to power the electronic device 11 and is a rechargeable battery 121. The specific type and / or capacity of the battery 121 is not particularly limited, for example, a battery 121 with a suitable capacity can be selected comprehensively according to the power consumption of the electronic device 11 and the power demand of the charging system.

[0047] The encapsulation 122 can be formed by using insulating resin and is configured to cover the battery 121 to protect the battery 121 from external impact, external moisture, etc. As an example, the encapsulation 122 can be formed by using epoxy resin potting compound to facilitate sealing of the battery 121.

[0048] The battery 121 and the encapsulation 122 can be disposed in the explosion-proof shell 123. Thus, in the case of extreme failure such as explosion, fire, etc. of the battery 121, the encapsulation 122 and the explosion-proof shell 123 can limit the range of combustion and explosion, thereby avoiding burning the blade 10, and even the wind turbine generator set. As an example, the explosion-proof shell 123 can be made of metal, but is not limited thereto, as long as it is a material that can block combustion and / or limit the range of combustion. Thus, in the present embodiment, the energy storage module 120 has a fireproof explosion-proof function.

[0049] FIG. 2 And FIG. 3 The energy storage module 120 and the electronic device 11 are shown as components independent of each other, but are not limited thereto, and the energy storage module 120 can also be a component of the electronic device 11, i.e. the energy storage module 120 can be disposed inside the electronic device 11. When the energy storage module 120 is disposed inside the electronic device 11, the explosion-proof shell 123 can be configured to enclose both the energy storage module 120 and the electronic device 11, or an additional explosion-proof shell can also be provided to enclose the electronic device 11 and the energy storage module 120 including the explosion-proof shell 123 therein.

[0050] Preferably, the power supply system can further include a controller 140. The controller 140 can be installed at the inner side of the blade 10 and connected upstream of the energy storage module 120 for controlling the charging and discharging processes of the battery 121. As an example, the controller 140 can be a wireless power supply controller. The controller 140 can manage the charging and discharging processes of the battery 121 to avoid overcharging, overdischarging, overheating, etc. of the battery 121.

[0051] AsFIG. 2 As shown, the wireless charging assembly 130 can be connected between the solar module 110 and the energy storage module 120, and can be configured to receive the electric energy from the solar module 110 through wireless transmission. Specifically, the wireless charging assembly 130 can include a wireless transmitting module 131 and a wireless receiving module 133.

[0052] As shown, the wireless transmitting module 131 can be mounted on the outer surface of the blade 10, and can be connected to the solar module 110. The wireless transmitting module 131 can be electrically connected to the solar module 110 through a power supply line to obtain the electric energy from the solar module 110. In order to reduce the power supply loss, the wireless transmitting module 131 is mounted close to the solar module 110. FIG. 3

[0053] The wireless receiving module 133 can be mounted on the inner surface of the blade 10 at least partially opposite to the wireless transmitting module 131, and can be connected to the energy storage module 120 to receive the electromagnetic energy from the wireless transmitting module 131 through electromagnetic coupling and transmit the electromagnetic energy to the energy storage module 120. As an example, the wireless receiving module 133 can be electrically connected to the energy storage module 120 through a power supply line. Therefore, the energy storage module 120 can be arranged at any position in the inner cavity of the blade 10 as needed, without being limited to the vicinity of the wireless receiving module 133.

[0054] More specifically, as shown, the wireless transmitting module 131 can include a transmitting coil 1311, and the wireless receiving module 133 can include a receiving coil 1331. The transmitting coil 1311 can be mounted on the outer surface of the blade 10, and the receiving coil 1331 can be mounted on the inner surface of the blade 10 at least partially opposite to the transmitting coil 1311, so that the transmitting coil 1311 and the receiving coil 1331 can be electromagnetically coupled to each other, thereby realizing the wireless electromagnetic transmission between the wireless transmitting module 131 and the wireless receiving module 133. The wireless transmitting module 131 and the wireless receiving module 133 can adopt standard wireless coils, but optionally, non-standard wireless coils can also be adopted as long as the energy can be transmitted through electromagnetic induction. FIG. 3 In order to improve the wireless transmission power, the wireless transmitting module 131 and the wireless receiving module 133 can transmit and receive the wireless electromagnetic energy through high-frequency radio waves. As an example, the wireless transmitting module 131 and the wireless receiving module 133 can adopt product standards related to mobile phone wireless charging technology, such as the Qi wireless charging standard, but are not limited thereto. In addition, the wireless transmitting module 131 and the wireless receiving module 133 can perform wireless charging through a magnetic wireless charging mode, so that the transmission power can reach 20W, and the wireless charging distance can reach 20cm.

[0055]

[0056] ​​Therefore, the power supply system according to the embodiment of the present invention can charge the energy storage module 120 disposed in the blade 10 through the solar module 110 to power the electronic device 11 in the blade 10, so that the electronic device 11 can work continuously for a long time.

[0057] In addition, the power supply system according to the embodiment of the present invention can realize wireless transmission inside and outside the blade 10 by using wireless charging technology through the wireless charging component 130. Therefore, compared with the energy transmission method of the outside and inside of the blade 10 by passing the feeder line through the blade 10, drilling holes on the blade 10 can be avoided, that is, damage to the structure of the blade 10 can be avoided.

[0058] In addition, since the cost of the solar modules and the wireless charging components is relatively low, the power supply system according to the present invention has relatively low cost, so that the power supply system can be deployed in large quantities.

[0059] like FIG. 3 As shown, solar module 110 may also include a first protective layer 112 covering solar panel 111. Since solar module 110 is mounted on the outer surface of blade 10, it may be exposed to harsh environmental conditions (such as high and low temperatures, ultraviolet rays, dust, rain, frost, etc.). In this embodiment, first protective layer 112 covers solar panel 111, thereby improving the reliability of solar module 110 (such as waterproofing, UV protection, and high and low temperature resistance), thereby ensuring stable operation of solar module 110. First protective layer 112 is transparent to ensure that the function of solar panel 111 is not affected. As an example, first protective layer 112 can be formed of a transparent insulating material. More specifically, first protective layer 112 can be formed of materials such as polycarbonate (PC), fluorinated polymers (such as polytetrafluoroethylene (PTFE), fluoroethylene-tetrafluoroethylene copolymer (PFA), and fluoroethylene propylene (FEP)).

[0060] Similar to the solar module 110, the wireless transmitter module 131 is also mounted on the outer surface of the blade 10, so the wireless charging assembly 130 may also include a second protective layer 132 covering the wireless transmitter module 131. The first protective layer 112 and the second protective layer 132 may be in the form of thin films and may form the outer surfaces of the solar module 110 and the wireless transmitter module 131, respectively.

[0061] The second protective layer 132 may be formed of the same or different material as the first protective layer 112. Unlike the first protective layer 112, the second protective layer 132 may be opaque. Components such as feeders and mounting aids (not shown) may also be arranged on the outer surface of the blade 10, and these components may also be covered with a protective layer similar to the second protective layer 132.

[0062] Therefore, in the present embodiment, by providing the first protective layer 112 and the second protective layer 132, the performance of the components mounted on the outer surface of the blade 10 against harsh environments can be improved. Therefore, the charging system according to the present embodiment can have improved reliability. In addition, the wireless charging assembly 130 can further include a protective layer (not labeled) covering the wireless receiving module 133.

[0063] In addition, the wireless transmitting module 131 and the wireless receiving module 133 can each include a lightning protection device 134, so that when subjected to a lightning current impact, lightning energy can be instantaneously discharged, thereby protecting the relevant electronic devices.

[0064] In the wireless transmitting module 131, the lightning protection device 134 can be connected to the electrical path between the solar panel 111 and the transmitting coil 1311, and in the wireless receiving module 133, the lightning protection device 134 can be connected to the electrical path between the receiving coil 1331 and the controller 140. Therefore, in the present embodiment, the risk of lightning strikes can be reduced at the input end of the transmitting coil 1311 and the output end of the receiving coil 1331.

[0065] As an example, the lightning protection device 134 can be composed of a pressure-sensitive resistor and a gas discharge tube, but is not limited thereto, for example, the gas discharge tube can be omitted to simplify the structure. As shown in FIG. 3 In the lightning protection device 134, the pressure-sensitive resistor and the gas discharge tube are connected in series and then grounded, so that when subjected to a lightning strike, the lightning current is guided to ground to achieve lightning protection or lightning protection.

[0066] In the present embodiment, since the lightning protection device 134 is provided, the electronic device 11 can be installed at any region inside the blade 10, without being limited to the region close to the blade root. Therefore, in the present embodiment, the installation freedom of the electronic device 11 inside the blade 10 can be improved.

[0067] In addition, as shown in FIG. 3 The power supply system can further include a heat insulation fireproof member 150. The heat insulation fireproof member 150 can be mounted on the outer surface of the blade 10, and can be mounted on the inner surface of the blade 10.

[0068] Specifically, the heat insulation fireproof member 150 can be mounted on the region of the outer surface of the blade 10 on which the solar module 110 is mounted, to avoid damage to the blade 10 due to overheating of the solar module 110. The heat insulation fireproof member 150 can be mounted on the region of the outer surface of the blade 10 on which the wireless transmitting module 131 is mounted, and can be mounted on the region of the inner surface of the blade 10 on which the wireless receiving module 133 is mounted, to avoid damage to the blade 10 due to overheating of the wireless charging assembly 130. Therefore, in the present embodiment, the blade 10 can be protected from overheating of the surrounding components by the heat insulation fireproof member 150.

[0069] As set forth above, the power supply system according to the present application can realize solar self-power supply of the electronic device in the blade by combining solar energy with wireless charging technology, so that it can ensure that the electronic device can work continuously for a long time, thereby reducing the cost of manual maintenance. In addition, the power supply system according to the present application can reduce the risk of lightning strike, improve the installation freedom of the electronic assembly in the blade, and can have improved reliability.

[0070] When the blade assembly of the wind turbine generator set includes the power supply system as described above, the blade structure can be avoided from being damaged, and the maintenance cost of the blade assembly can be reduced.

[0071] When the wind turbine generator set includes the power supply system as described above, during operation of the wind turbine generator set, the maintenance workload of the set can be reduced, and the stability and reliability of the operation of the set can be improved.

[0072] The specific embodiments of the present application are described in detail above, although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be combined, modified and improved (for example, different technical features of the present application can be combined to obtain new technical solutions) without departing from the principles and spirits of the present application limited by the claims. These combinations, modifications and improvements should also be within the scope of protection of the present application.

Claims

1. A power supply system, which is installed on the blades of a wind turbine generator set, characterized in that: The power supply system is used to supply power to an electronic device (11) installed inside a blade (10) of a wind turbine generator set, and comprises: a solar module (110) mounted on the outer surface of the blade (10) and comprising a solar panel (111); an energy storage module (120) mounted on the inner side of the blade (10) and connected to the electronic device (11), and configured to receive and store electrical energy from the solar module (110); and A wireless charging component (130) is connected between the solar module (110) and the energy storage module (120) and is configured to wirelessly transmit the electric energy received from the solar module (110).

2. The power supply system according to claim 1, characterized in that: The wireless charging component (130) includes: a wireless transmission module (131) mounted on the outer surface of the blade (10) and connected to the solar module (110); A wireless receiving module (133) is installed on the inner surface of the blade (10) at least partially opposite to the wireless transmitting module (131), and is connected to the energy storage module (120) to receive electromagnetic energy from the wireless transmitting module (131) and transmit the electromagnetic energy to the energy storage module (120) through electromagnetic coupling.

3. The power supply system according to claim 2, characterized in that: The wireless transmitting module (131) and the wireless receiving module (133) both include a lightning protection device (134).

4. The power supply system according to any one of claims 1 to 3, characterized in that: The energy storage module (120) comprises: Battery (121); an encapsulation portion (122) formed of an insulating resin and configured to encapsulate the battery (121); An explosion-proof housing (123) is provided in which the battery (121) and the encapsulation portion (122) are arranged.

5. The power supply system according to claim 4, characterized in that: The power supply system further comprises a controller (140) installed on the inner side of the blade (10) and connected upstream of the energy storage module (120) for controlling the charging and discharging processes of the battery (121).

6. The power supply system according to any one of claims 1 to 3, characterized in that: The solar module (110) further comprises a transparent first protective layer (112) covering the solar panel (111).

7. The power supply system according to claim 2 or 3, characterized in that: The wireless charging component (130) further includes a second protective layer (132) covering the wireless transmitting module (131).

8. The power supply system according to any one of claims 1 to 3, characterized in that: The power supply system further includes a heat-insulating and fire-proofing member (150) installed on a region of the outer surface of the blade (10) on which the solar module (110) is installed.

9. The power supply system according to claim 2 or 3, characterized in that: The power supply system further comprises a heat-insulating and fire-proof component (150), The heat-insulating and fire-proofing component (150) is installed on the outer surface of the blade (10) in an area on which the solar module (110) and the wireless transmitting module (131) are installed, and on the inner surface of the blade (10) in an area on which the wireless receiving module (133) is installed.

10. A blade assembly for a wind turbine generator, characterized in that: The blade (10) assembly comprises an electronic device (11) mounted on the inner side of the blade (10) and a power supply system according to any one of claims 1 to 9.

11. A wind turbine generator set, characterized in that: The wind turbine generator set includes the power supply system according to any one of claims 1 to 9.

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