Wireless charging system for inspection robot of transformer substation

Abstract

The invention relates to the technical field of electric power operation and maintenance, and particularly discloses a wireless charging system for a substation inspection robot, and the system comprises a charging pedestal which comprises a transmitting end rectification circuit which is used for converting an input alternating current into a direct current; the high-frequency inverter circuit is used for converting the direct current into high-frequency alternating current; the transmitting coil is used for generating a high-frequency electromagnetic field to realize energy transmission; the inspection robot comprises a receiving coil used for receiving the high-frequency electromagnetic field generated by the transmitting coil and converting the high-frequency electromagnetic field into electric energy; the receiving end rectifying circuit is used for converting the high-frequency alternating current received by the receiving coil into direct current; and the lithium battery is used for storing the direct current electric energy output by the receiving end rectifying circuit. According to the wireless charging system for the substation inspection robot, the environmental adaptability and safety of the inspection robot can be improved, the equipment failure rate is reduced, and the efficiency and quality of substation operation and maintenance work are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to a wireless charging system for a substation inspection robot. Background Art

[0002] In my country, the stable operation of the power system is an important foundation for ensuring the sustainable development of the national economy. In recent years, with the rapid growth of the economy, the demand for electricity has continued to rise. As an important part of the power system, the number and scale of substations have also continued to expand. However, the operation and maintenance of substations face many challenges, especially regular inspection tasks. The traditional manual inspection method is not only inefficient, but also has safety risks.

[0003] In order to solve this problem, inspection robots came into being. They can replace manual work to complete tasks such as infrared temperature measurement and instrument reading and recording, greatly improving the efficiency and safety of substation operation and maintenance. However, existing inspection robots generally use plug charging, which has the following problems:

[0004] Poor environmental adaptability: Plug charging is easily affected by environmental factors such as dust and humidity, resulting in poor charging effect.

[0005] The failure rate of the charging plug is high: due to frequent plugging and unplugging operations, the charging plug is easily worn, increasing the failure rate.

[0006] Safety hazards: Short circuits and other safety accidents may occur during the charging process of the plug, threatening the safety of equipment and personnel.

[0007] In response to the above problems, the present invention proposes a wireless charging system for a substation inspection robot, aiming to improve the environmental adaptability and safety of the inspection robot, reduce the equipment failure rate, and further improve the efficiency and quality of substation operation and maintenance work.

[0008] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Summary of the invention

[0009] An object of the present invention is to provide a wireless charging system for a substation inspection robot, which can improve the environmental adaptability and safety of the inspection robot, reduce the equipment failure rate, and further improve the efficiency and quality of substation operation and maintenance work.

[0010] To achieve the above objectives, the present invention provides a wireless charging system for a substation inspection robot, comprising:

[0011] A charging base, the charging base comprising:

[0012] The transmitting end rectifier circuit is used to convert the input AC power into DC power and provide a stable DC power supply for the high-frequency inversion process;

[0013] A high-frequency inverter circuit, connected to the output end of the transmitting-end rectifier circuit, for converting direct current into high-frequency alternating current;

[0014] A transmitting coil, connected to the high-frequency inverter circuit, for generating a high-frequency electromagnetic field to achieve energy transmission;

[0015] An inspection robot, the inspection robot comprising:

[0016] A receiving coil, corresponding to the transmitting coil, for receiving the high-frequency electromagnetic field generated by the transmitting coil and converting it into electrical energy;

[0017] A receiving-end rectifier circuit, connected to the receiving coil, for converting the high-frequency alternating current received by the receiving coil into direct current;

[0018] A lithium battery, the lithium battery is connected to the receiving end rectifier circuit and is used to store the DC power output by the receiving end rectifier circuit.

[0019] Optionally, the charging base further includes:

[0020] A power plug is electrically connected to the transmitting end rectifier circuit and is used to input alternating current to the transmitting end rectifier circuit.

[0021] Optionally, the operating parameters of the alternating current are 220V, 50Hz.

[0022] Optionally, the transmitting end rectification circuit is a bridge rectifier.

[0023] Optionally, the high-frequency inverter circuit is a full-bridge inverter.

[0024] Optionally, the high-frequency inverter circuit is a half-bridge inverter.

[0025] Optionally, the charging base further includes:

[0026] The primary compensation circuit is connected in series with the transmitting coil and is used to correct the power factor of the transmitting coil, reduce reactive power, and improve active power transmission efficiency.

[0027] Optionally, the inspection robot further includes:

[0028] The secondary side compensation circuit is connected in series with the receiving coil to form an LC resonant circuit, which is used to optimize the receiving coil's absorption efficiency of the transmitting end energy.

[0029] Optionally, the inspection robot further includes:

[0030] A robot body, wherein the receiving coil, the receiving end rectifier circuit, and the lithium battery are all located inside the robot body; wherein the receiving coil is located at the bottom surface of the robot body;

[0031] The electric wheel set is installed on both sides of the robot body.

[0032] Optionally, the distance from the bottom surface of the inspection robot body to the ground is higher than the height of the charging base.

[0033] The beneficial effects of the present invention are: providing a wireless charging system for a substation inspection robot, wherein the "transmitting coil" and the "receiving coil" realize non-contact wireless charging. This method avoids physical contact and is therefore not affected by environmental factors such as dust and humidity, thereby improving the charging performance of the robot in various environments;

[0034] The "transmitter rectifier circuit" converts the input AC power into DC power, providing a stable DC power supply for the high-frequency inversion process. This ensures that the wireless charging system can operate stably and is not affected by grid voltage fluctuations; the "high-frequency inversion circuit" converts DC power into high-frequency AC power, which is a key step in wireless charging because it allows the generation of a high-frequency electromagnetic field through the transmitting coil, thereby achieving efficient energy transmission.

[0035] The "receiving coil" is designed to receive the high-frequency electromagnetic field generated by the transmitting coil and convert it into electrical energy, which enables the robot to receive charging signals within a certain range, improving the flexibility and convenience of charging.

[0036] The secondary side compensation circuit is connected in series with the receiving coil to form an LC resonant circuit, which is used to optimize the receiving coil's absorption efficiency of the transmitting end energy. This optimization can significantly improve the efficiency of energy transmission and reduce energy loss, thereby ensuring charging efficiency even in harsh environments.

[0037] The "receiving end rectifier circuit" converts the high-frequency alternating current received by the receiving coil into direct current, which is a key step in charging the lithium battery. In this way, the robot can store electrical energy for later use.

[0038] Using lithium batteries as energy storage devices can provide a stable power supply. At the same time, lithium batteries have a long charging cycle and a long life, which reduces the frequency of maintenance and replacement.

[0039] The "transmitter coil" and "receiver coil" realize contactless charging, avoiding the problem of poor charging effect caused by environmental factors such as dust and humidity in the traditional plug charging method. Due to the lack of physical contact, on the one hand, the wireless charging system can maintain good charging performance in the harsh substation environment; on the other hand, wireless charging is adopted, so there is no frequent plugging and unplugging operation of the traditional charging plug. This greatly reduces the failure rate caused by plug wear. The design of the transmitter coil and the receiver coil makes it unnecessary to physically connect the charging process, thereby reducing the risk of failure caused by mechanical wear; on the other hand, the safe conversion and transmission of electric energy is realized through the "high-frequency inverter circuit" and the "receiving end rectifier circuit". Due to the lack of physical contact, there is no risk of short circuit caused by poor contact or looseness of the plug in the system, thereby reducing the occurrence of safety accidents. In addition, the design of the secondary compensation circuit further improves the stability of energy transmission and reduces the potential safety hazards caused by unstable energy transmission.

[0040] Therefore, the wireless charging system for the substation inspection robot provided in this embodiment can improve the environmental adaptability and safety of the inspection robot, reduce the equipment failure rate, and further improve the efficiency and quality of substation operation and maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 A schematic diagram of the structure of a wireless charging system for a substation inspection robot provided in an embodiment.

[0043] In the figure:

[0044] 1. Charging base; 101. Transmitter rectifier circuit; 102. High-frequency inverter circuit; 103. Transmitter coil; 104. Primary compensation circuit;

[0045] 2. Inspection robot; 201. Receiving coil; 202. Receiving end rectifier circuit; 203. Lithium battery; 204. Robot body; 205. Electric wheel set; 206. Secondary side compensation circuit. DETAILED DESCRIPTION

[0046] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0047] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0048] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0049] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0050] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0051] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0052] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0053] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms such as "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the technical field to which the present invention belongs, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0054] See also Figure 1 The present invention provides a wireless charging system for a substation inspection robot, including an inspection robot 2 for inspection and a charging base 1 for wirelessly charging the inspection robot 2.

[0055] The charging base 1 includes a transmitting end rectifier circuit 101 , a high frequency inverter circuit 102 , and a transmitting coil 103 .

[0056] The transmitting end rectifier circuit 101 is used to convert the input AC power into DC power, providing a stable DC power supply for the high-frequency inversion process; the high-frequency inversion circuit 102 is connected to the output end of the transmitting end rectifier circuit 101, and is used to convert DC power into high-frequency AC power; the transmitting coil 103 is connected to the high-frequency inversion circuit 102, and is used to generate a high-frequency electromagnetic field to achieve energy transmission.

[0057] The inspection robot 2 includes a receiving coil 201 , a receiving-end rectifier circuit 202 , and a lithium battery 203 .

[0058] The receiving coil 201 corresponds to the transmitting coil 103, and is used to receive the high-frequency electromagnetic field generated by the transmitting coil 103 and convert it into electrical energy; the receiving-end rectifier circuit 202 is connected to the receiving coil 201, and is used to convert the high-frequency alternating current received by the receiving coil 201 into direct current; the lithium battery 203 is connected to the receiving-end rectifier circuit 202, and is used to store the direct current power output by the receiving-end rectifier circuit 202.

[0059] The wireless charging system for the substation inspection robot provided in this embodiment:

[0060] The "transmitting coil 103" and the "receiving coil 201" realize contactless wireless charging. This method avoids physical contact and is therefore not affected by environmental factors such as dust and humidity, thereby improving the charging performance of the robot in various environments;

[0061] The "transmitter rectifier circuit 101" converts the input AC power into DC power, providing a stable DC power supply for the high-frequency inversion process. This ensures that the wireless charging system can operate stably and is not affected by grid voltage fluctuations; the "high-frequency inversion circuit 102" converts DC power into high-frequency AC power, which is a key step in wireless charging because it allows the generation of a high-frequency electromagnetic field through the transmitting coil 103, thereby achieving efficient energy transmission.

[0062] The receiving coil 201" is designed to receive the high-frequency electromagnetic field generated by the transmitting coil 103 and convert it into electrical energy, which enables the robot to receive charging signals within a certain range, thereby improving the flexibility and convenience of charging.

[0063] The "receiving end rectifier circuit 202" converts the high-frequency alternating current received by the receiving coil 201 into direct current, which is a key step in charging the lithium battery 203. In this way, the robot can store electrical energy for subsequent use.

[0064] Using the lithium battery 203 as an energy storage device can provide a stable power supply. At the same time, the lithium battery 203 has a long charging cycle and a long life, which reduces the frequency of maintenance and replacement.

[0065] The "transmitting coil 103" and the "receiving coil 201" realize contactless charging, avoiding the problem of poor charging effect caused by environmental factors such as dust and humidity in the traditional plug charging method. Due to the lack of physical contact, on the one hand, the wireless charging system can maintain good charging performance in the harsh substation environment; on the other hand, wireless charging is adopted, so there is no frequent plugging and unplugging operation of the traditional charging plug. This greatly reduces the failure rate caused by plug wear. The design of the transmitting coil 103 and the receiving coil 201 makes the charging process without physical connection, thereby reducing the risk of failure caused by mechanical wear; on the other hand, the safe conversion and transmission of electric energy is realized through the "high-frequency inverter circuit 102" and the "receiving end rectifier circuit 202". Due to the lack of physical contact, there is no risk of short circuit caused by poor contact or looseness of the plug in the system, thereby reducing the occurrence of safety accidents. In addition, the design of the secondary compensation circuit 206 further improves the stability of energy transmission and reduces the potential safety hazards caused by unstable energy transmission.

[0066] Therefore, the wireless charging system for the substation inspection robot provided in this embodiment can improve the environmental adaptability and safety of the inspection robot 2, reduce the equipment failure rate, and further improve the efficiency and quality of substation operation and maintenance work.

[0067] Optionally, the charging base 1 further includes an electrical plug, which is electrically connected to the transmitter rectifier circuit 101 and is used to input AC power to the transmitter rectifier circuit 101. By adding the electrical plug, the connection between the charging base 1 and the external power supply is facilitated, thereby improving the installation convenience and applicability of the system.

[0068] Furthermore, the operating parameters of the AC power are 220V, 50Hz. The AC power operating parameters are 220V, 50Hz, which ensures the compatibility of the system with the standard power grid, so that the system can be used normally in most countries and regions.

[0069] In this embodiment, the transmitting end rectifier circuit 101 is a bridge rectifier. It can effectively eliminate the fluctuation of the alternating current and ensure that the output direct current is smooth and stable. The use of a bridge rectifier can effectively eliminate the fluctuation of the alternating current and ensure that the output direct current is smooth and stable, thereby improving the stability and charging efficiency of the wireless charging system.

[0070] The high-frequency inverter circuit 102 is a full-bridge inverter or a half-bridge inverter, which generates the required high-frequency alternating current by controlling the on and off of the switch tube.

[0071] The full-bridge inverter can provide higher output power and better electromagnetic field control, thereby improving the efficiency of energy transmission and the overall performance of the system. The half-bridge inverter has a simple structure and low cost, and can generate the required high-frequency AC power, which is suitable for occasions with strict requirements on cost and volume.

[0072] The charging base 1 further includes a primary compensation circuit 104. The primary compensation circuit 104 is connected in series with the transmitting coil 103 to correct the power factor of the transmitting coil 103, reduce reactive power, and improve active power transmission efficiency.

[0073] The addition of the primary compensation circuit 104 can correct the power factor of the transmitting coil 103, reduce reactive power, and improve the active power transmission efficiency, thereby improving the energy utilization rate and charging speed of the entire wireless charging system.

[0074] The inspection robot 2 also includes a secondary compensation circuit 206. The secondary compensation circuit 206 is connected in series with the receiving coil 201 to form an LC resonant circuit, which is used to optimize the absorption efficiency of the receiving coil 201 to the energy of the transmitting end. The secondary compensation circuit 206" is connected in series with the receiving coil 201 to form an LC resonant circuit, which is used to optimize the absorption efficiency of the receiving coil 201 to the energy of the transmitting end. This optimization can significantly improve the efficiency of energy transmission and reduce energy loss, thereby ensuring charging efficiency even in harsh environments.

[0075] In this embodiment, the inspection robot 2 further includes a robot body 204 and an electric wheel set 205 .

[0076] The receiving coil 201 , the receiving end rectifier circuit 202 , and the lithium battery 203 are all located inside the robot body 204 ; wherein the receiving coil 201 is located at the bottom surface of the robot body 204 ; and the electric wheel set 205 is installed on both sides of the robot body 204 .

[0077] The distance from the bottom surface of the main body of the inspection robot 2 to the ground is higher than the height of the charging base 1 .

[0078] The distance from the bottom surface of the robot body 204 to the ground is designed to be higher than the height of the charging base 1, ensuring that the receiving coil 201 can move above the charging base 1 during charging and align with the transmitting coil 103 to maximize the charging efficiency.

[0079] In summary, the beneficial effects of the wireless charging system for substation inspection robots provided in this embodiment include:

[0080] 1. Improve environmental adaptability

[0081] Traditional contact charging methods have high environmental requirements and are easily affected by factors such as dust and humidity. Wireless charging systems eliminate the need for physical contact and can therefore maintain efficient and reliable charging performance in harsher environments.

[0082] 2. Reduce the failure rate

[0083] Frequent plugging and unplugging of contact charging plugs causes wear and tear, which increases the failure rate. The wireless charging system has no physical plug, which reduces mechanical wear and significantly reduces the probability of failure.

[0084] 3. Reduce safety hazards

[0085] Contact charging may cause problems such as short circuits, which poses certain safety risks. Wireless charging systems do not require physical contact, effectively avoiding accidents such as short circuits and improving the safety of the system.

[0086] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A wireless charging system for a substation inspection robot, characterized in that: include: A charging base (1), the charging base (1) comprising: The transmitting end rectifier circuit (101) is used to convert the input alternating current into direct current, thereby providing a stable direct current power supply for the high-frequency inversion process; A high-frequency inverter circuit (102), connected to the output end of the transmitting-end rectifier circuit (101), and used for converting direct current into high-frequency alternating current; A transmitting coil (103), connected to the high-frequency inverter circuit (102), and used to generate a high-frequency electromagnetic field to achieve energy transmission; An inspection robot (2), the inspection robot (2) comprising: A receiving coil (201), corresponding to the transmitting coil (103), used for receiving the high-frequency electromagnetic field generated by the transmitting coil (103) and converting it into electrical energy; A receiving-end rectifier circuit (202), connected to the receiving coil (201), and used for converting high-frequency alternating current received by the receiving coil (201) into direct current; A lithium battery (203), the lithium battery (203) is connected to the receiving end rectifier circuit (202) and is used to store direct current power output by the receiving end rectifier circuit (202).

2. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The charging base (1) also includes: An electrical plug, the electrical plug being electrically connected to the transmitting end rectifying circuit (101) and being used for inputting alternating current into the transmitting end rectifying circuit (101).

3. The wireless charging system for substation inspection robots according to claim 2, characterized in that: The working parameters of the alternating current are 220V, 50Hz.

4. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The transmitting end rectification circuit (101) is a bridge rectifier.

5. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The high-frequency inverter circuit (102) is a full-bridge inverter.

6. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The high-frequency inverter circuit (102) is a half-bridge inverter.

7. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The charging base (1) also includes: The primary compensation circuit (104) is connected in series with the transmitting coil (103) and is used to correct the power factor of the transmitting coil (103), reduce reactive power, and improve active power transmission efficiency.

8. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The inspection robot (2) further comprises: The secondary side compensation circuit (206) is connected in series with the receiving coil (201) to form an LC resonant circuit, and is used to optimize the efficiency of the receiving coil (201) in absorbing the energy of the transmitting end.

9. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The inspection robot (2) further comprises: A robot body (204), wherein the receiving coil (201), the receiving end rectifier circuit (202), and the lithium battery (203) are all located inside the robot body (204); wherein the receiving coil (201) is located at the bottom surface of the robot body (204); An electric wheel set (205), wherein the electric wheel set (205) is installed on both sides of the robot body (204).

10. The wireless charging system for substation inspection robots according to claim 1, characterized in that: The distance from the bottom surface of the main body of the inspection robot (2) to the ground is higher than the height of the charging base (1).

Images