Wireless charging system suitable for photovoltaic cleaning robot

Abstract

The invention relates to a wireless charging system suitable for a photovoltaic cleaning robot, the wireless charging system comprises a fixed charging module and a mobile charging module, the mobile charging module is arranged on an upper cover of the photovoltaic cleaning robot, and the fixed charging module comprises a wireless charging transmitting module, a voltage transformation module, a leakage protection module and a distribution box; the wireless charging transmitting module comprises a wireless charging transmitting coil, a transmitting coil fixing box and a transmitting coil control module; a containing cavity is formed in the transmitting fixing box body, a transmitting coil fixing plate is arranged in the containing cavity, the wireless charging transmitting coil is arranged on the transmitting coil fixing plate, and the transmitting coil control module is arranged in the containing cavity and located above the wireless charging transmitting coil. The mobile charging module comprises a wireless charging receiving coil, a receiving coil fixing box and a receiving coil control module. The charging stability of the photovoltaic cleaning robot is improved, and the service life of the charging system is prolonged; and the automation degree and the working efficiency of the robot are also improved.

Description

Technical Field

[0001] The invention relates to a wireless charging system suitable for a photovoltaic cleaning robot. Background Art

[0002] Photovoltaic power generation, as a sustainable clean energy, has received more and more attention and developed rapidly in recent years. However, due to the environment in which photovoltaic power stations are located, photovoltaic panels are prone to accumulate dust and dirt, which not only affects the power generation efficiency of photovoltaic panels, but may also cause component damage. Therefore, various photovoltaic cleaning robots have appeared on the market, including various automatic cleaning and automatic charging unattended photovoltaic cleaning robots.

[0003] At present, most photovoltaic cleaning robots on the market use contact charging devices. During the charging process, the charging terminals of the charging devices will be exposed. The dust and rain in the robot's working environment and the special pollutants discharged by various factories near the power station are easy to corrode and damage the contact docking structure of the charging system, causing failure of the contact charging device. There may be hidden dangers such as poor contact, heating of the contact docking structure, and failure to charge normally, which may further lead to the occurrence of safety accidents.

[0004] Therefore, it is necessary to design a non-contact wireless charging system suitable for photovoltaic cleaning robots to improve the safety and intelligence of unattended photovoltaic cleaning robots. Summary of the invention

[0005] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a wireless charging system suitable for a photovoltaic cleaning robot.

[0006] The technical solution of the present invention is as follows:

[0007] A wireless charging system suitable for a photovoltaic cleaning robot, the wireless charging system comprising a fixed charging module and a mobile charging module, the mobile charging module being fixedly arranged on the upper cover of the photovoltaic cleaning robot, wherein the fixed charging module comprises a wireless charging transmitting module, a transformer module, a leakage protection module and a distribution box;

[0008] The wireless charging transmitting module includes a wireless charging transmitting coil, a transmitting coil fixing box and a transmitting coil control module. The transmitting coil fixing box includes a transmitting fixing box body and a transmitting box cover arranged on the transmitting fixing box body. The transmitting box body is sealed by the transmitting box cover.

[0009] The transmitting fixing box body has a receiving cavity inside, a transmitting coil fixing plate is fixedly arranged in the receiving cavity, the wireless charging transmitting coil is fixedly arranged on the transmitting coil fixing plate, and the transmitting coil control module is fixedly arranged in the receiving cavity and located above the wireless charging transmitting coil;

[0010] The transformer module and the leakage protection module are both arranged inside the distribution box, and the transformer module is electrically connected to the leakage protection module and the transmitting coil control module respectively;

[0011] The mobile charging module includes a wireless charging receiving coil, a receiving coil fixing box and a receiving coil control module, and the receiving coil fixing box includes a receiving fixing box body;

[0012] The receiving and fixing box body has an installation cavity inside, a receiving coil fixing plate is fixedly arranged in the installation cavity, the wireless charging receiving coil is fixedly arranged on the receiving coil fixing plate, and the receiving coil control module is fixedly arranged in the installation cavity and is located above the wireless charging receiving coil.

[0013] The side wall of the transmitting fixing box body is provided with an indicator light interface, a charging indicator light is installed in the indicator light interface, and the charging indicator light is electrically connected to the transmitting coil control module.

[0014] A transmitting module power interface is provided on the side wall of the transmitting fixing box body, and the transmitting module power interface is electrically connected to the transmitting coil control module.

[0015] A fixing column is respectively arranged at the four corners of the bottom of the accommodating cavity, each of the fixing columns is provided with a first fixing hole, and the four corners of the transmitting coil fixing plate are respectively provided with second fixing holes, and the transmitting coil fixing plate is fixedly arranged on the tops of the four fixing columns by fastening bolts cooperating with the first fixing holes and the second fixing holes.

[0016] A first sealing groove is arranged around the upper end surface of the launch fixing box body, a first sealing ring is arranged in the first sealing groove, and the launch box cover is sealed and connected to the upper end of the launch fixing box body through the first sealing ring.

[0017] The four corners of the upper end surface of the launch fixing box body are respectively provided with first mounting holes, and the four corners of the launch box cover are respectively provided with second mounting holes. The launch box cover is fixedly connected to the launch fixing box body by fastening screws and the first mounting holes and the second mounting holes.

[0018] A connecting portion is provided on the outer side wall of the upper end of the receiving and fixing box body and extends outwardly therefrom. A second sealing groove is provided on the lower end surface of the connecting portion and a second sealing ring is provided in the second sealing groove.

[0019] The receiving and fixing box body is fixedly arranged on the upper cover of the photovoltaic cleaning robot through the connecting portion.

[0020] The protection level of the indicator light interface and the transmitting module power interface is not lower than IP67.

[0021] The present invention has the following advantages and beneficial effects: a wireless charging system for a photovoltaic cleaning robot, the wireless charging system comprising a fixed charging module and a mobile charging module, the mobile charging module being fixedly arranged on the upper cover of the photovoltaic cleaning robot, the fixed charging module comprising a wireless charging transmitting module, a transformer module, a leakage protection module and a distribution box; the wireless charging transmitting module comprising a wireless charging transmitting coil, a transmitting coil fixing box and a transmitting coil control module, the transmitting coil fixing box comprising a transmitting fixing box body and a transmitting box cover arranged on the transmitting fixing box body, the transmitting fixing box body being sealed by the transmitting box cover; the transmitting fixing box body has an accommodating cavity inside, a transmitting coil fixing plate being fixedly arranged in the accommodating cavity, the wireless charging transmitting coil being fixedly arranged on the transmitting coil fixing plate, the transmitting coil control module being fixedly arranged inside the accommodating cavity and located on the upper part of the wireless charging transmitting coil The transformer module and the leakage protection module are both arranged inside the distribution box, and the transformer module is electrically connected to the leakage protection module and the transmitting coil control module respectively; the mobile charging module includes a wireless charging receiving coil, a receiving coil fixing box and a receiving coil control module, and the receiving coil fixing box includes a receiving fixing box body; the receiving fixing box body has an installation cavity inside, and a receiving coil fixing plate is fixedly arranged in the installation cavity, the wireless charging receiving coil is fixedly arranged on the receiving coil fixing plate, and the receiving coil control module is fixedly arranged in the installation cavity and located above the wireless charging receiving coil; through the above design, this system is wireless charging, and the positive and negative poles of the charging system do not need to be in direct contact, so the dust, rain and other factors in the working environment of the photovoltaic cleaning robot cannot damage or affect the docking device in the wireless charging system, which greatly improves the charging stability of the photovoltaic cleaning robot and the service life of the charging system. The automation degree of the robot in daily operations is improved, the work intensity of the operator is reduced, and the work efficiency of the machine is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a three-dimensional structure of a wireless charging system for a photovoltaic cleaning robot and a photovoltaic cleaning robot provided in an embodiment of the present invention.

[0023] Figure 2 A schematic diagram of the main structure of a wireless charging system for a photovoltaic cleaning robot provided in an embodiment of the present invention and the photovoltaic cleaning robot.

[0024] Figure 3A schematic diagram of the three-dimensional structure of the transmitting coil fixing box and the distribution box provided in an embodiment of the present invention.

[0025] Figure 4 This is an enlarged three-dimensional structural schematic diagram of a transmitting coil fixing box provided in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of an enlarged exploded structure of a transmitting coil fixing box provided in an embodiment of the present invention.

[0027] Figure 6 This is an enlarged three-dimensional structural schematic diagram of the transmission fixing box body, the wireless charging transmission coil and the transmission coil control module provided in an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of a partially enlarged three-dimensional structure of a launch fixing box body provided in an embodiment of the present invention.

[0029] Figure 8 This is an enlarged three-dimensional structural schematic diagram of a receiving coil fixing box provided in an embodiment of the present invention.

[0030] Fig. 9 This is a schematic diagram of an enlarged and exploded three-dimensional structure of a receiving coil fixing box provided in an embodiment of the present invention.

[0031] Fig.10 This is an enlarged three-dimensional structural schematic diagram of a receiving and fixing box body provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 10 As shown: A wireless charging system suitable for a photovoltaic cleaning robot provided in an embodiment of the present invention comprises a fixed charging module and a mobile charging module, wherein the mobile charging module is fixedly arranged on an upper cover 301 of a photovoltaic cleaning robot 300, wherein the fixed charging module comprises a wireless charging transmitting module, a transformer module 102, a leakage protection module 103 and a distribution box 104;

[0037] The wireless charging transmitting module includes a wireless charging transmitting coil 111, a transmitting coil fixing box 110 and a transmitting coil control module 112. The transmitting coil fixing box 110 includes a transmitting fixing box body 113 and a transmitting box cover 114 disposed on the transmitting fixing box body 113. The transmitting box cover 114 seals the transmitting fixing box body 113.

[0038] The transmitting fixing box body 113 has a receiving cavity 115 inside, a transmitting coil fixing plate 116 is fixedly arranged in the receiving cavity 115, the wireless charging transmitting coil 111 is fixedly arranged on the transmitting coil fixing plate 116, and the transmitting coil control module 112 is fixedly arranged in the receiving cavity 115 and located above the wireless charging transmitting coil 111;

[0039] The transformer module 102 and the leakage protection module 103 are both arranged inside the distribution box 104, and the transformer module 102 is electrically connected to the leakage protection module 103 and the transmitting coil control module 112 respectively;

[0040] The mobile charging module includes a wireless charging receiving coil 211, a receiving coil fixing box 210 and a receiving coil control module 212. The receiving coil fixing box 210 includes a receiving fixing box body 213. The lower end of the receiving fixing box body 213 has an opening 214.

[0041] The receiving fixing box body 213 has an installation cavity 215 inside, and the installation cavity 215 is communicated with the opening 214. A receiving coil fixing plate 216 is fixedly arranged in the installation cavity 215, and the wireless charging receiving coil 211 is fixedly arranged on the receiving coil fixing plate 216. The receiving coil control module 212 is fixedly arranged in the installation cavity 215 and is located above the wireless charging receiving coil 211.

[0042] The side wall of the transmitting fixing box body 113 is provided with an indicator light interface 101 , and a charging indicator light 117 is installed in the indicator light interface 101 . The charging indicator light 117 is electrically connected to the transmitting coil control module 112 .

[0043] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein a side wall of the transmitting fixing box body 113 is provided with a transmitting module power interface 118 , and the transmitting module power interface 118 is electrically connected to the transmitting coil control module 112 .

[0044] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein the four bottom corners of the accommodating cavity 115 are respectively provided with a fixing column 119, each of the fixing columns 119 is provided with a first fixing hole 120, and the four corners of the transmitting coil fixing plate 116 are respectively provided with second fixing holes 121, and the transmitting coil fixing plate 116 is fixedly arranged on the top of the four fixing columns 119 by fastening bolts and cooperating with the first fixing holes 120 and the second fixing holes 121.

[0045] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein a first sealing groove 122 is arranged around the upper end surface of the transmitting and fixing box body 113, and a first sealing ring (not shown in the figure) is arranged in the first sealing groove 122, and the transmitting box cover 114 is sealed and connected to the upper end of the transmitting and fixing box body 113 through the first sealing ring.

[0046] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein the four corners of the upper end surface of the transmitting and fixing box body 113 are respectively provided with first mounting holes 123, and the four corners of the transmitting box cover 114 are respectively provided with second mounting holes 124, and the transmitting box cover 114 is fixedly connected to the transmitting and fixing box body 113 by fastening screws that cooperate with the first mounting holes 123 and the second mounting holes 124.

[0047] The embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein a connection portion 217 is provided on the outer side wall of the upper end of the receiving and fixing box body 213, and a second sealing groove 218 is formed inwardly around the lower end surface of the connection portion 217, and a second sealing ring is provided in the second sealing groove 218. Through the above design, that is, the connection portion 217 and the receiving and fixing box body 213 are integrally formed, so the firmness of the connection portion 217 and the receiving and fixing box body 213 can be improved, and the safety and reliability are improved; at the same time, a plurality of second mounting holes 219 are provided on the connection portion 217 in the second sealing groove 218. In addition, by providing a second sealing ring in the second sealing groove 218, the tightness of the connection portion 217 and the upper cover 301 of the photovoltaic cleaning robot 300, which is the position to be fixed, can be improved.

[0048] The embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, wherein the receiving and fixing box body 213 is fixedly arranged on the upper cover 301 of the photovoltaic cleaning robot 300 through the connecting portion 217. By setting a second sealing ring in the second sealing groove 218 on the lower surface of the connecting portion 217, the sealing performance of the connection portion 217 combined with the upper cover 301 can be improved, and the safety and reliability are improved. At the same time, by setting a plurality of second mounting holes 219 in the second sealing groove 218, the assembly and disassembly of the connection portion 217 and the upper cover 301 can be facilitated by the cooperation of the fastening screws and the second mounting holes 219, which is convenient for assembly and can also improve the firmness of the connection portion 217 combined with the upper cover 301, thereby achieving the purpose of improving the firmness of the connection portion 217 combined with the photovoltaic cleaning robot 300.

[0049] The protection level of the indicator light interface 117 and the transmitting module power interface 118 is not less than IP67.

[0050] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot. The 220V mains is connected to the leakage protection module 103 in the distribution box 104. The leakage protection module 103 in the distribution box 104 has been connected to the transformer module 102. The transformer module 102 is then electrically connected to the transmitting coil control module 112 in the wireless charging transmitting module. The charging indicator light 117 on the transmitting coil fixing box 110 in the wireless charging transmitting module is connected. Then the fixed charging module is fixed above the charging position of the photovoltaic cleaning robot 300.

[0051] The mobile charging module is installed on the upper cover 301 of the photovoltaic cleaning robot 300, and then the mobile charging module is connected to the battery charging line of the photovoltaic cleaning robot 300. After the photovoltaic cleaning robot 300 performs cleaning operations for a period of time, when the battery power reaches the value set by the system that needs to be returned to charge, the photovoltaic cleaning robot 300 returns to charge. When the photovoltaic cleaning robot 300 stops at the charging position, the mobile charging module on the upper cover 301 starts to communicate and dock with the fixed charging module. After successful docking, the battery of the photovoltaic cleaning robot 300 starts to be wirelessly charged.

[0052] The wireless charging system provided by the embodiment of the present invention is suitable for a photovoltaic cleaning robot, which has a trickle charging activation function after the battery is over-discharged. When the battery voltage is too low, the battery is gradually activated with a small current. After the battery voltage rises to the normal range, it automatically switches to rated current constant current charging to protect and extend the battery life. At the same time, the wireless charging system also has multiple protections such as over-temperature, output over-voltage and over-current, resonant over-voltage, input current limiting, and output short circuit.

[0053] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot, in which a fixed charging module is fixed above a standby position (i.e., a charging position) of the photovoltaic cleaning robot 300. When the photovoltaic cleaning robot 300 is in the standby position, the transmitting coil control module 112 can communicate wirelessly with the receiving coil control module 212. After the wireless communication is successful, the battery inside the photovoltaic cleaning robot 300 can be charged contactlessly, which has the characteristics of convenient and flexible charging.

[0054] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot. The wireless charging transmitting coil 111 on the wireless charging transmitting module and the wireless charging receiving coil 211 on the mobile charging module can automatically adapt to different charging distances and offset distances, thereby ensuring high charging efficiency in the entire range, reducing the difficulty of docking between the transmitting end (that is, the fixed charging module) and the receiving end (mobile charging module), and improving the practicality of the wireless charging system.

[0055] The embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot. The wireless charging system can charge different power storage devices such as lithium batteries, lead-acid batteries, nickel-metal hydride batteries and supercapacitors. At the same time, the wireless charging system has a trickle charging activation function after the battery is over-discharged. When the battery voltage is too low, the battery is gradually activated with a small current. After the battery voltage rises to the normal range, it automatically switches to rated current constant current charging to protect and extend the battery life.

[0056] An embodiment of the present invention provides a wireless charging system suitable for a photovoltaic cleaning robot. The wireless charging system has multiple protections such as over-temperature, output over-voltage and over-current, resonant over-voltage, input current limiting, and output short circuit. The safe operation of the wireless charging system can be ensured in the harsh operating environment of a photovoltaic power station.

[0057] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wireless charging system suitable for a photovoltaic cleaning robot, characterized in that: The wireless charging system includes a fixed charging module and a mobile charging module, wherein the mobile charging module is fixedly arranged on the upper cover of the photovoltaic cleaning robot, wherein the fixed charging module includes a wireless charging transmitting module, a transformer module, a leakage protection module and a distribution box; The wireless charging transmitting module includes a wireless charging transmitting coil, a transmitting coil fixing box and a transmitting coil control module. The transmitting coil fixing box includes a transmitting fixing box body and a transmitting box cover arranged on the transmitting fixing box body. The transmitting box body is sealed by the transmitting box cover. The transmitting fixing box body has a receiving cavity inside, a transmitting coil fixing plate is fixedly arranged in the receiving cavity, the wireless charging transmitting coil is fixedly arranged on the transmitting coil fixing plate, and the transmitting coil control module is fixedly arranged in the receiving cavity and located above the wireless charging transmitting coil; The transformer module and the leakage protection module are both arranged inside the distribution box, and the transformer module is electrically connected to the leakage protection module and the transmitting coil control module respectively; The mobile charging module includes a wireless charging receiving coil, a receiving coil fixing box and a receiving coil control module, and the receiving coil fixing box includes a receiving fixing box body; The receiving and fixing box body has an installation cavity inside, a receiving coil fixing plate is fixedly arranged in the installation cavity, the wireless charging receiving coil is fixedly arranged on the receiving coil fixing plate, and the receiving coil control module is fixedly arranged in the installation cavity and is located above the wireless charging receiving coil.

2. The wireless charging system for a photovoltaic cleaning robot according to claim 1, characterized in that: The side wall of the transmitting fixing box body is provided with an indicator light interface, a charging indicator light is installed in the indicator light interface, and the charging indicator light is electrically connected to the transmitting coil control module.

3. The wireless charging system for a photovoltaic cleaning robot according to claim 2, characterized in that: A transmitting module power interface is provided on the side wall of the transmitting fixing box body, and the transmitting module power interface is electrically connected to the transmitting coil control module.

4. The wireless charging system for a photovoltaic cleaning robot according to claim 1, characterized in that: A fixing column is respectively arranged at the four corners of the bottom of the accommodating cavity, each of the fixing columns is provided with a first fixing hole, and the four corners of the transmitting coil fixing plate are respectively provided with second fixing holes, and the transmitting coil fixing plate is fixedly arranged on the tops of the four fixing columns by fastening bolts cooperating with the first fixing holes and the second fixing holes.

5. The wireless charging system for a photovoltaic cleaning robot according to claim 1, characterized in that: A first sealing groove is arranged around the upper end surface of the launch fixing box body, a first sealing ring is arranged in the first sealing groove, and the launch box cover is sealed and connected to the upper end of the launch fixing box body through the first sealing ring.

6. The wireless charging system for a photovoltaic cleaning robot according to claim 1, characterized in that: The four corners of the upper end surface of the launch fixing box body are respectively provided with first mounting holes, and the four corners of the launch box cover are respectively provided with second mounting holes. The launch box cover is fixedly connected to the launch fixing box body by fastening screws and the first mounting holes and the second mounting holes.

7. The wireless charging system for a photovoltaic cleaning robot according to claim 1, characterized in that: A connecting portion is provided on the outer side wall of the upper end of the receiving and fixing box body and extends outwardly therefrom. A second sealing groove is provided on the lower end surface of the connecting portion and a second sealing ring is provided in the second sealing groove.

8. The wireless charging system for a photovoltaic cleaning robot according to claim 7, characterized in that: The receiving and fixing box body is fixedly arranged on the upper cover of the photovoltaic cleaning robot through the connecting portion.

9. The wireless charging system for a photovoltaic cleaning robot according to claim 3, characterized in that: The protection level of the indicator light interface and the transmitting module power interface is not lower than IP67.

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