Laser charging operation system and engineering machinery

Abstract

The invention provides a laser charging operation system and engineering machinery, and the system comprises a communication base station, a laser transmitting base station, and a receiving module. The laser charging base station comprises a control module and a laser generation module, and the control module controls the laser generation module to emit laser based on the first control signal; the receiving module receives a second control signal provided by the communication base station and the laser emitted by the laser generation module, the receiving module converts the laser into electric energy based on the second control signal, and the electric energy is used for supplying power to the load. According to the laser charging operation system, remote control over the laser emitting base station and the receiving module is achieved through the communication base station, the laser emitting base station and the receiving module are remotely controlled to transmit electric energy to the load with laser as an energy carrier, manual intervention of operators is not needed, and certain safety is improved.

Description

Technical Field

[0001] This application relates to the field of integrated power supply technology, and more specifically, to a laser charging operation system and engineering machinery. Background Technology

[0002] Currently, electric excavators are widely used in the engineering field, replacing oil-powered excavators. These electric excavators typically have batteries to provide power. However, the batteries have limited capacity, and when the battery is low, manual intervention is usually required to charge it. This results in low charging and construction efficiency, and the complex environments at construction sites pose certain safety hazards when manually charging the excavator. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a laser charging operation system and engineering machinery, aiming to solve the problems of low charging and construction efficiency and certain safety hazards when manual charging is involved.

[0004] In a first aspect, this application provides a laser charging system, including a communication base station, a laser emitting base station, and a receiving module. The laser charging base station includes a control module and a laser generating module. The control module is connected to the communication base station and the laser generating module. The control module receives a first control signal provided by the communication base station and is used to control the laser generating module to emit laser light based on the first control signal. The receiving module is communicatively connected to the communication base station and the laser generating module. The receiving module receives a second control signal provided by the communication base station and the laser light emitted by the laser generating module. The receiving module is used to convert the laser light into electrical energy based on the second control signal, and the electrical energy is used to power a load.

[0005] Based on the laser charging system provided in this application embodiment, the communication base station can generate at least a first control signal and a second control signal. The control module in the laser emitting base station can control the laser generating module to emit laser light based on the first control signal, and the receiving module can convert the laser light from the laser generating module into electrical energy based on the second control signal to power the load. Thus, operators can remotely control the laser emitting base station and the receiving module through the communication base station to transmit electrical energy to the load using laser light as an energy carrier, without requiring manual intervention (e.g., charging the load via cable). This avoids the safety hazards associated with manual charging in complex construction site environments, reducing human intervention and improving safety. Furthermore, using laser light as an energy carrier results in high power density, strong resistance to electromagnetic interference, and long-distance transmission, leading to high charging efficiency and improved construction efficiency. Laser charging can also be performed anywhere within line of sight, without the need for wires or other physical connections, offering high flexibility.

[0006] In one possible design, the laser generation module includes an energy storage unit and a laser unit; the energy storage unit is connected to a control module; the laser unit is connected to the control module, the energy storage unit, and a receiving module; wherein, the control module is used to control the energy storage unit to supply power to the laser unit, and the control module is used to control the laser unit to emit laser light based on a first control signal.

[0007] In one possible design, the laser transmitting base station also includes an optical module, which is connected to the laser unit, the receiving module, and the control module. The laser emitted by the laser unit is transmitted to the receiving module via the optical module.

[0008] In this implementation, after the laser unit emits laser light, the optical module focuses the laser light into a small beam to increase the energy density of the laser light, thereby reducing energy loss along the way, improving the accuracy of the laser light emitted from the laser transmitting base station to the receiving module, and thus improving the power supply reliability for the load.

[0009] In one possible design, the laser emission base station also includes a positioning module, which is connected to the optical module and the control module.

[0010] In this implementation, the positioning module can determine the real-time position of the receiving module and feed it back to the control module, so that the control module can dynamically adjust the direction of the laser beam emitted by the optical module based on the feedback result, thereby improving the transmission accuracy of the laser emitted by the laser transmitting base station to the receiving module, and thus improving the reliability of the laser charging operation system in supplying power to the load.

[0011] In one possible design, the laser emitting base station also includes a detection module connected to the control module. The detection module is used to detect the optical path of the laser emitted by the laser generating module to generate a corresponding detection signal, and sends the detection signal to the control module. The control module is also used to control whether the laser generating module emits laser based on the detection signal.

[0012] In one possible design, the receiving module includes a photoelectric conversion unit; the photoelectric conversion unit is communicatively connected to the communication base station and the laser generating module, the photoelectric conversion unit receives a second control signal provided by the communication base station and the laser emitted by the laser generating module, and the photoelectric conversion unit is used to convert the laser into electrical energy based on the second control signal.

[0013] In this implementation, the photoelectric conversion unit converts laser light into electrical energy based on a second control signal to power the load. Compared to mechanical conversion, the energy loss during photoelectric conversion is smaller, enabling more efficient energy transfer. Furthermore, the photoelectric conversion unit has a faster response speed to laser light and higher photoelectric conversion efficiency, completing the conversion within nanoseconds or even picoseconds, thus improving charging and construction efficiency. Secondly, the photoelectric conversion unit maintains stable performance even after prolonged use, is less affected by environmental factors, and has no mechanical parts, resulting in lower maintenance costs and downtime, thus ensuring high reliability.

[0014] In one possible design, the photoelectric conversion unit is a photovoltaic cell.

[0015] In one possible design, the receiving module also includes a heat dissipation unit, which is connected to the photoelectric conversion unit.

[0016] In one possible design, the laser charging system also includes an energy management module, which is connected to the photoelectric conversion unit and the load.

[0017] Secondly, this application provides an engineering machine, including a body and a laser charging operation system as described in any of the optional embodiments of the first aspect, with a receiving module mounted on the body.

[0018] In summary, operators can remotely control the laser transmitting base station and receiving module via the communication base station. This allows the laser to transmit electrical energy to the load using laser as the energy carrier, eliminating the need for manual intervention (e.g., charging the load via cable). This avoids the safety hazards associated with manual charging in complex construction environments, reducing human intervention and improving safety. Secondly, laser power density is high, electromagnetic interference is strong, and long-distance transmission is possible, resulting in high charging efficiency and improved construction efficiency. Furthermore, laser charging can be performed anywhere within line of sight, without the need for wires or other physical connections, offering high flexibility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the module structure of a laser charging operation system provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0025] Figure 7 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application;

[0027] Figure 9 This is a schematic diagram of the module structure of another laser charging operation system provided in the embodiments of this application.

[0028] The following are the labeling elements in the figure:

[0029] 1. Laser charging operation system; 11. Laser emitting base station; 111. Control module; 112. Laser generating module; 1121. Energy storage unit; 1122. Laser unit; 113. Optical module; 114. Positioning module; 115. Detection module; 12. Receiving module; 121. Photoelectric conversion unit; 122. Heat dissipation unit; 13. Communication base station. Detailed Implementation

[0030] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, and circuits have been omitted so as not to obscure the description of this application with unnecessary detail.

[0031] Before introducing the embodiments of this application, the technical terms that may be involved in the embodiments of this application will be explained.

[0032] Laser wireless technology: The transmitting side converts electrical energy into laser light, which is then used as an energy carrier to transmit the energy to the receiving side. The laser-to-electricity conversion module then converts the energy back into electrical energy to power the load.

[0033] Power-type / power batteries: These are high-power, high-capacity batteries specifically designed to provide power to drive electric motors. They possess high specific energy and specific power, meeting the needs of vehicles for frequent rapid charging and discharging as well as long-term operation. The main characteristic of power-type batteries is their support for high-rate charging and discharging, enabling them to provide instantaneous high-current power to vehicles. The primary consideration is specific power (W / kg).

[0034] With the rapid development of new energy sources, more and more equipment is moving towards green and low-carbon goals. Taking engineering equipment as an example, the manufacturing and maintenance costs of fuel-powered excavators and loaders that use engine oil as power are relatively high, while the manufacturing and maintenance costs of electric excavators and loaders that use batteries as power are relatively low. For example, taking an excavator weighing 36 tons as an example, the operating cost of each electric excavator is about 70% lower than that of a fuel-powered excavator. Moreover, the operating efficiency of electric excavators is higher than that of fuel-powered excavators, for example, by about 8%. Thus, the annual comprehensive cost of an electric excavator is about 400,000 yuan lower than that of a fuel-powered excavator. Therefore, electric excavators are widely used in the engineering field, replacing fuel-powered excavators.

[0035] With the rapid development of urban construction, infrastructure development, and mining, the demand for large-scale engineering equipment is increasing. To improve the operational efficiency of engineering equipment, it is now commonly configured with work groups. Through scientific planning and advanced technology, the operational efficiency and economic benefits of engineering equipment are improved, while also optimizing work processes and enhancing safety. For example, excavators are typically configured with excavator work groups. These work groups are a range of excavators suitable for tasks such as earthmoving, leveling, trench digging, and material loading. These excavators can be of different models and specifications, such as large excavators, small excavators, wheeled excavators, and tracked excavators, to meet various operating conditions and needs. In this way, all kinds of excavators can achieve efficient and coordinated work through the communication technology and intelligent management system in the excavator work group, so as to improve the overall construction efficiency and safety. In large-scale engineering construction projects, the work group can rationally arrange and organize excavators and other auxiliary equipment (such as loaders, dump trucks, etc.) to improve the productivity of the project, reduce costs, shorten the construction period, and reduce the impact on the environment.

[0036] Electric excavators are typically equipped with batteries to provide power. Currently, there are usually three types of power supply for electric excavators on the market. The first is a pure electric power supply mode. However, when using pure electric mode, the battery's range is low, the battery pack cost is high, and it is not conducive to charging.

[0037] The second type is the trolley-based power supply mode, which requires manual intervention to charge. For example, excavator fleets in related technologies are usually equipped with charging stations at construction sites. When the battery power is low, manual intervention (e.g., operators connect the charging station to the battery via cable) is used to charge it. However, when using the trolley mode, the limited cable length restricts the working space of the electric excavator. The electric excavator is limited by the site constraints and can only work in a fixed area. If the electric excavator is located in a work area without charging cables, the loading and unloading trailers cannot be used, thus affecting the excavator's operation. Furthermore, when using cables for charging, the friction between the cable and the ground may cause cable wear, leading to a risk of electric shock, posing a certain safety hazard.

[0038] The third type is the battery swapping power supply mode, which also requires manual intervention to charge. Operators can replace the battery pack or put in the spare battery pack. However, this requires manual replacement by the operator, which is time-consuming. In addition, the battery pack is large in size and weight. In order to avoid injury to the operator when replacing the battery pack, the electric excavator usually needs to be moved to a designated battery swapping location. Therefore, the operation is cumbersome and limited by the site.

[0039] Secondly, regardless of whether it is a tethered power supply mode or a battery swapping power supply mode, manual intervention by the operator is required to achieve charging. However, the construction site environment where electric excavators are located is complex, and there are certain safety hazards when the operator performs manual intervention.

[0040] Therefore, this application provides a laser charging operation system and engineering machinery. The laser charging operation system realizes remote control of the laser transmitting base station and the receiving module through the communication base station. The laser transmitting base station and the receiving module are remotely controlled to transmit electrical energy to the load using laser as an energy carrier. No manual intervention by the operator is required, which avoids the problem of certain safety hazards when the construction site environment of the engineering machinery is complex and manual charging is required, thus improving the safety to a certain extent.

[0041] The laser charging operation system and engineering machinery provided in this application are described below with reference to the accompanying drawings.

[0042] In one example, this application provides an engineering machine, which includes a body and a laser charging operation system. The laser charging operation system is partially mounted on the body to provide power to the engineering machine and drive it to work. The body usually also houses a power system, a hydraulic system, a safety system, an auxiliary system, and other systems. This application does not impose specific limitations on these systems.

[0043] When it is necessary to charge the load (such as the battery) in the construction machinery, the laser charging system 1 in this application adopts laser power beaming technology, which is a technology that uses a laser beam to transmit electrical energy over a long distance. The specific working principle is to convert light energy into electrical energy by emitting a high-power laser beam to power the receiving device (i.e. the load in the construction machinery). This technology is suitable for equipment that is difficult to wire and needs to be moved frequently (such as drones, electric vehicles and automated machinery). In addition, laser charging technology has a wide range of application flexibility and can be applied to drones, unmanned vehicles, automated construction machinery, satellites and space stations, etc.

[0044] To enable the laser charging system 1 to provide power to construction machinery based on laser charging technology, in one example, such as Figure 1As shown, the laser charging system 1 provided in this application may include a laser emitting base station 11 and a receiving module 12. The laser emitting base station 11 and the receiving module 12 are communicatively connected (as shown by the dotted line in the figure). The receiving module 12 is mounted on the body (e.g., the top or rear of the body) and connected to a load in the body, which may be the battery of the construction machinery. It is worth noting that the dotted arrows in the figure indicate communication connections used for transmitting laser signals and control signals, while the solid arrows indicate electrical connections used for transmitting electrical energy signals.

[0045] For example, when charging the load in construction machinery is required, the laser emitting base station 11 can centrally generate laser energy and directionally transmit it to the target area. That is, the laser emitting base station 11 can emit laser light to the receiving module 12, which receives the laser light from the laser emitting base station 11 and converts it into electrical energy to supply power to the load. Through the laser emitting base station 11 and the receiving module 12, the laser-to-electrical energy conversion is achieved, realizing the purpose of transmitting electrical energy to the load using laser as an energy carrier. When using laser as an energy carrier for transmission, the transmission power density is high, the resistance to electromagnetic interference is strong, and long-distance transmission is possible. Furthermore, the laser transmission method is not limited by scene or environment; that is, it can still be used in high-voltage, strong electromagnetic, static electricity, flammable and explosive scenarios and environments to ensure the reliability of construction machinery in various scenarios and environments. Moreover, it eliminates the need for manual operation, making it convenient and improving safety.

[0046] In this example, the laser transmitting base station 11 and receiving module 12 transmit electrical energy to the load using laser as the energy carrier, thus powering the load. This eliminates the need for manual intervention (e.g., via cables) to charge the load, avoiding the safety hazards associated with manual charging in complex construction environments where engineering machinery is located. It reduces human intervention and improves safety. Furthermore, laser-based energy transmission offers high power density, strong resistance to electromagnetic interference, and the ability to transmit over long distances, resulting in high charging efficiency and improved construction efficiency. Laser charging can also be performed anywhere within line of sight, without the need for wires or other physical connections, offering high flexibility.

[0047] In some hazardous environments at construction sites (such as mines, construction sites, disaster areas, etc.), to further improve safety, in one example, such as... Figure 2As shown, the laser charging system 1 provided in this application may further include a communication base station 13. The communication base station 13 is communicatively connected to the laser emitting base station 11 and the receiving module 12, enabling the communication base station 13 to remotely control the laser emitting base station 11 and the receiving module 12. This allows operators to remotely control the laser emitting base station 11 and the receiving module 12 through the communication base station 13 without human intervention on-site, thereby further improving safety. For example, the communication base station 13 can generate at least a first control signal and a second control signal. The first control signal is sent to the laser emitting base station 11, which emits a laser. The communication base station 13 sends the second control signal to the receiving module 12 to control the receiving module 12 to convert the laser from the laser emitting base station 11 into electrical energy to power the load. Thus, operators can remotely control the construction machinery through the communication base station 13 network without human intervention on-site, improving safety to a certain extent. Furthermore, remote control of the laser emitting base station 11 and the receiving module 12 through the communication base station 13 improves charging accuracy and construction efficiency, reduces errors caused by human intervention, and lowers operating costs. Thus, remote control of the laser transmitting base station 11 and the receiving module 12 via the communication base station 13 improves the accuracy and safety of the operation.

[0048] In this way, operators can remotely control the laser transmitting base station 11 and the receiving module 12 through the communication base station 13 without human intervention on site, further reducing human intervention and improving a certain degree of safety.

[0049] Optionally, the communication base station 13 can employ communication technologies such as millimeter-wave communication (mmWave), massive MIMO, and carrier aggregation. When millimeter-wave communication is used, it supports extremely high data transmission rates, reaching tens of Gbps or even higher. Furthermore, the higher frequency band of millimeter-wave communication allows for faster signal propagation, resulting in lower transmission latency and improved real-time control of the laser emitting base station 11 and receiving module 12 by the communication base station 13. When massive MIMO is used, the communication base station 13 exhibits stronger anti-interference capabilities, enabling it to transmit the first and second control signals directionally to the laser emitting base station 11 and receiving module 12 respectively, reducing signal interference and improving signal transmission quality. Carrier aggregation significantly enhances the data transmission rate. The specific communication technology used by the communication base station 13 can be selected and configured based on actual needs; this application does not impose specific limitations in this regard.

[0050] Optionally, the communication base station 13 can be a 5G communication base station. In this case, the first control signal and the second control signal provided by the communication base station 13 are 5G signals. 5G communication base stations have higher transmission frequencies, generally between 3.5 GHz (gigahertz) and 50 GHz. Compared to the 1.8 GHz to 2.6 GHz of 4G communication base stations, 5G communication base stations have wider bandwidth and faster transmission speeds. Furthermore, 5G communication base stations use smaller cell divisions, resulting in more refined network coverage and providing more stable services. Secondly, 5G communication base stations also support large-scale device connections, capable of handling more data connections simultaneously, meeting the needs of scenarios such as the Internet of Things and smart cities, and thus have strong applicability.

[0051] In one example, such as Figure 3 As shown, the laser charging base station 11 may include a control module 111 and a laser generating module 112. The control module 111 is communicatively connected to the laser generating module 112 and to a communication base station 13. The laser generating module 112 is communicatively connected to a receiving module 12. The control module 111 receives a first control signal provided by the communication base station 13 and can control the laser generating module 112 to emit laser light based on the first control signal, and emit the laser light to the receiving module 12. The receiving module 12 can convert the laser light into electrical energy based on a second control signal, and the electrical energy is used to power the load.

[0052] In this example, the control module 111 can control the laser generating module 112 to emit laser based on the first control signal. The control module 111 can improve the control accuracy and reliability of the laser generating module 112.

[0053] The control module 111 can not only control the laser generating module 112 to generate laser based on the first control signal, but also control the laser generating module 112 to stop generating laser and adjust the laser transmission power based on the first control signal. That is, the first control signal provided by the communication base station 13 can be interpreted as different signals depending on different needs. For example, when the laser generating module 112 needs to generate and emit laser, the first control signal provided by the communication base station 13 to the control module 111 is interpreted as a laser on signal, and the control module 111 can control the laser generating module 112 to generate and emit laser based on this laser on signal; when the laser generating module 112 needs to stop emitting laser, the first control signal provided by the communication base station 13 to the control module 111 is interpreted as a laser off signal, and the control module 111 can control the laser generating module 112 to stop generating laser based on this laser off signal; when the laser transmission power needs to be adjusted, the first control signal provided by the communication base station 13 to the control module 111 is interpreted as a laser adjustment signal, and the control module 111 can adjust the laser output power based on this laser adjustment signal.

[0054] Optionally, the control module 111 may be a microcontroller unit (MCU) or other control structure, and this application does not impose specific restrictions on it.

[0055] In one example, such as Figure 4 As shown, the laser generating module 112 includes an energy storage unit 1121 and a laser unit 1122. The energy storage unit 1121 is communicatively connected to the control module 111, and the energy storage unit 1121 is electrically connected to the laser unit 1122 (as shown in the figure). The laser unit 1122 is communicatively connected to the control module 111 and the receiving module 12. The control module 111 can control the energy storage unit 1121 to supply power to the laser unit 1122. The control module 111 is used to control the laser unit 1122 to emit laser light based on a first control signal.

[0056] In this example, when the laser unit 1122 needs to emit laser light, the control module 111 can control the energy storage unit 1121 to supply power to the laser unit 1122 so that the laser unit 1122 can work normally when connected to power. The control module 111 will control the laser unit 1122 to turn on based on the first control signal. At this time, since the laser unit 1122 has been connected to power, the laser unit 1122 can generate a stable and focused laser beam and emit laser light to the receiving module 12.

[0057] The energy storage unit 1121 is connected to power supply equipment (such as the power grid, solar panels, or other forms of renewable energy) to receive the power supply voltage, thereby supplying power to the laser unit 1122 and other units / modules in the laser emitting base station 11. In other words, the energy storage unit 1121 serves as the power supply carrier for the laser emitting base station 11. Furthermore, since different units / modules in the laser emitting base station 11 require different power supply voltages, to improve the power supply reliability of the energy storage unit 1121, it also has an energy conversion function to convert the received power supply voltage into a voltage compatible with each unit / module.

[0058] The laser unit 1122 is the core component of the laser transmitting base station 11. During operation, the laser unit 1122 generates a stable, focused laser beam. Optionally, the laser unit 1122 can be a fiber laser, semiconductor laser, solid-state laser, or other high-power laser to generate a stable, focused laser beam. It is worth noting that different types or powers of the laser unit 1122 can be selected based on the actual required transmission power, transmission distance, and transmission efficiency; this application does not impose specific limitations in this regard.

[0059] To increase the energy density of the laser emitted by the laser unit 1122, in one example, such as Figure 5As shown, the laser transmitting base station 11 may further include an optical module 113, which is connected to the laser unit 1122 and communicatively connected to the receiving module 12 and the control module 111. The laser emitted by the laser unit 1122 is transmitted to the receiving module 12 via the optical module 113. In this example, after the laser unit 1122 emits the laser, the control module 111 controls the optical module 113 to focus the laser into a small beam to increase the energy density of the laser, thereby reducing energy loss along the way and improving the accuracy of the laser emitted by the laser transmitting base station 11 to the receiving module 12, thus improving the power supply reliability for the load.

[0060] Optionally, the optical module 113 may include lenses, mirrors, and other optical elements for focusing the laser beam into a narrow beam to increase the energy density of the laser and thereby reduce energy loss along the way. The optical module 113 may also include other optical elements that can achieve the above functions. This application does not impose specific limitations on this.

[0061] In one example, such as Figure 6 As shown, the laser emitting base station 11 may also include a positioning module 114, which is electrically connected to the optical module 113 and communicatively connected to the control module 111. Since the construction machinery is constantly moving, the position of the receiving module 12 mounted on the machinery's body also changes in real time. In this example, the positioning module 114 can determine the real-time position of the receiving module 12 and feed it back to the control module 111. This allows the control module 111 to dynamically adjust the direction of the laser beam emitted by the optical module 113 based on the feedback result, thereby improving the transmission accuracy of the laser emitted from the laser emitting base station 11 to the receiving module 12, and thus improving the reliability of the laser charging system 1 in supplying power to the load.

[0062] Optionally, the positioning module 114 may be equipped with a Global Positioning System (GPS), radar, or visual recognition technology to achieve real-time positioning of the receiving module 12. When the positioning module 114 is equipped with a GPS, the GPS can track the position of the construction machinery in real time, that is, the GPS can track the position of the receiving module 12 in real time and feed it back to the control module 111. The control module 111 can adjust the direction of the laser beam emitted by the optical module 113 based on the feedback result to improve the transmission accuracy of the laser emitted by the laser transmitting base station 11 to the receiving module 12. The positioning module 114 may also have obstacle detection, avoidance functions, and other functions, which can be set according to actual needs. This application does not impose specific limitations on these functions.

[0063] In one example, such as Figure 7As shown, the laser emitting base station 11 may also include a detection module 115, which is connected to the control module 111. The detection module 115 is used to detect the optical path of the laser emitted by the laser generating module 112 to generate a corresponding detection signal, and send the detection signal to the control module 111. The control module 111 is also used to control whether the laser generating module 112 emits laser based on the detection signal.

[0064] In this example, the detection module 115 will detect the optical path of the laser emitted by the laser generating module 112 in real time. When no person or other obstacle enters the optical path of the laser emitted by the laser generating module 112, it means that the optical path transmission is normal. The detection module 115 generates a corresponding detection signal to the control module 111. At this time, the detection signal indicates that the optical path transmission is normal. The control module 111 can control the laser generating module 112 to emit laser based on the detection signal. At this time, the laser emitted by the laser generating module 112 can be stably transmitted to the receiving module 12, that is, the laser transmitting base station 11 can perform laser charging normally. When a person or other obstacle enters the optical path of the laser emitted by the laser generating module 112, it indicates an optical path transmission abnormality. That is, the laser is blocked by people or other obstacles in the optical path, causing the laser emitted by the laser generating module 112 to fail to transmit normally to the receiving module 12. At this time, the detection signal generated by the detection module 115 indicates an optical path transmission abnormality. The control module 111 can control the laser generating module 112 to stop emitting laser based on the detection signal to reduce energy loss.

[0065] In order for the receiving module 12 to convert the received laser energy into electrical energy to power the load, in one example, such as Figure 8 As shown, the receiving module includes a photoelectric conversion unit 121, which is communicatively connected to the communication base station 13 and the laser generation module 112. The photoelectric conversion unit 121 receives a second control signal provided by the communication base station 13 and the laser emitted by the laser generation module 112. Based on the second control signal, the photoelectric conversion unit 121 converts the laser into electrical energy to power the load. Compared to mechanical conversion, the energy loss during photoelectric conversion is smaller, enabling more efficient energy transfer. Furthermore, the photoelectric conversion unit 121 has a fast response speed to the laser, exhibiting high photoelectric conversion efficiency, capable of completing photoelectric conversion within nanoseconds or even picoseconds, thus improving charging and construction efficiency. Secondly, the photoelectric conversion unit 121 maintains stable performance even after prolonged use, is less susceptible to environmental factors, and has low maintenance costs due to its lack of mechanical parts, reducing maintenance costs and downtime, resulting in high reliability.

[0066] Optionally, the photoelectric conversion unit 121 can be a photodiode or a photovoltaic panel, which can realize the photoelectric conversion function. The specific choice can be made according to different needs. For example, if a small size is desired, a photodiode can be used; if a higher conversion efficiency is desired, a photovoltaic panel can be used. The photoelectric conversion efficiency of a photovoltaic panel can reach more than 20%, which is extremely high. This application does not impose specific restrictions on this.

[0067] The photoelectric conversion unit 121 generates a large amount of heat during photoelectric conversion. To avoid excessive heat, in one example, such as Figure 8 As shown, the receiving module 12 also includes a heat dissipation unit 122, which is connected to the photoelectric conversion unit 121. When the photoelectric conversion unit 121 performs photoelectric conversion, the heat generated can be dissipated to the air or outside the engineering machinery through the heat dissipation unit 122 to reduce the temperature of the photoelectric conversion unit 121, avoid the problem of overheating of the photoelectric conversion unit 121 and improve the working stability of the photoelectric conversion unit 121, thereby improving the conversion reliability of the photoelectric conversion unit 121.

[0068] Optionally, the heat dissipation unit 122 can be a structure that can achieve heat dissipation, such as a metal backplate, heat sink, or heat sink fins. The metal backplate can be made of a metal material with good thermal conductivity (such as aluminum) to effectively conduct and dissipate heat. The heat sink and heat sink fins can also be made of materials with good thermal conductivity. The specific selection can be made according to actual needs. This application does not impose specific restrictions on this.

[0069] In one example, the laser charging system 1 may also include an energy management module connected to the photoelectric conversion unit 121, the load (i.e., battery) in the construction machinery, and other systems. The energy management module can monitor the battery status and optimize energy distribution based on the battery status to ensure the power supply of the construction machinery during operation and improve the working reliability of the construction machinery.

[0070] It is worth noting that the load in this application can refer to the battery of a single piece of construction machinery or the batteries of multiple pieces of construction machinery. When the laser charging system 1 is applied to a single piece of construction machinery (e.g., an electric excavator), the receiving module 12 is mounted on the body of the electric excavator, and the optical module 113 in the laser charging system 1 can emit only one laser beam to achieve laser charging of the electric excavator. When the laser charging system 1 is applied to multiple pieces of construction machinery (e.g., electric excavators, electric crushers, electric loaders), such as... Figure 9As shown, each piece of construction machinery is equipped with a receiving module 12. The optical module 113 can emit multiple laser beams to multiple receiving modules 12 to achieve laser charging of multiple pieces of construction machinery. The specific number of laser beams of the optical module 113 and the number of receiving modules 12 can be set according to the number of construction machinery on site and the requirements. This application does not impose specific restrictions on this.

[0071] In summary, operators can remotely control the laser transmitting base station 11 and the receiving module 12 via the communication base station 13. This allows the laser transmitting base station 11 and the receiving module 12 to transmit electrical energy to the load using laser as an energy carrier, thus powering the load. No manual intervention (e.g., via cable) is required to charge the load, avoiding the safety hazards associated with manual charging in complex construction site environments. This reduces human intervention and improves safety. Furthermore, laser power transmission offers high power density, strong resistance to electromagnetic interference, and long-distance transmission, resulting in high charging efficiency and improved construction efficiency. Laser charging can also be performed anywhere within line of sight, without the need for wires or other physical connections, offering high flexibility.

[0072] The laser wireless charging technology of the laser charging operation system 1 provided in this application can be combined with construction machinery such as electric excavators to realize remote and automated energy replenishment and control of construction machinery. This makes it applicable not only to places such as mines and construction sites, but also to places such as smart construction sites and smart mines, with high applicability.

[0073] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0074] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0075] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0076] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0077] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A laser charging system, characterized in that, include: Communication base station; A laser emitting base station, the laser charging base station includes a control module and a laser generating module, the control module is connected to the communication base station and the laser generating module, the control module receives a first control signal provided by the communication base station, and the control module is used to control the laser generating module to emit laser based on the first control signal; as well as, The receiving module is communicatively connected to the communication base station and the laser generating module. The receiving module receives a second control signal provided by the communication base station and the laser emitted by the laser generating module. The receiving module is used to convert the laser into electrical energy based on the second control signal, and the electrical energy is used to power the load.

2. The laser charging system according to claim 1, characterized in that, The laser generation module includes: An energy storage unit, wherein the energy storage unit is connected to the control module; and, A laser unit, which is connected to the control module, the energy storage unit, and the receiving module; The control module is used to control the energy storage unit to supply power to the laser unit, and the control module is used to control the laser unit to emit laser light based on the first control signal.

3. The laser charging system according to claim 2, characterized in that, The laser emitting base station also includes: An optical module is provided, which is connected to the laser unit, the receiving module, and the control module. The laser emitted by the laser unit is transmitted to the receiving module via the optical module.

4. The laser charging system according to claim 3, characterized in that, The laser emitting base station also includes: A positioning module is provided, which is connected to the optical module and the control module.

5. The laser charging system according to claim 1, characterized in that, The laser emitting base station also includes: The detection module is connected to the control module. The detection module is used to detect the optical path of the laser emitted by the laser generating module to generate a corresponding detection signal, and send the detection signal to the control module. The control module is also used to control whether the laser generating module emits the laser based on the detection signal.

6. The laser charging system according to any one of claims 1-5, characterized in that, The receiving module includes: A photoelectric conversion unit is communicatively connected to the communication base station and the laser generating module. The photoelectric conversion unit receives the second control signal provided by the communication base station and the laser emitted by the laser generating module. The photoelectric conversion unit is used to convert the laser into electrical energy based on the second control signal.

7. The laser charging system according to claim 6, characterized in that, The photoelectric conversion unit is a photovoltaic cell.

8. The laser charging system according to claim 6, characterized in that, The receiving module further includes: A heat dissipation unit is connected to the photoelectric conversion unit.

9. The laser charging system according to claim 6, characterized in that, The laser charging system also includes: An energy management module is connected to the photoelectric conversion unit and the load.

10. An engineering machinery, characterized in that, The device includes a fuselage and a laser charging system as described in any one of claims 1-9, wherein the receiving module is mounted on the fuselage.

Images