Electric ship, power supply vehicle and ship trailer electrified water transportation system

Abstract

The utility model provides an electric ship, a power supply vehicle and a ship trailer electrified water transportation system, and relates to the technical field of electric ship power supply. The system comprises a traction rope, a power cable, a traction converter, a controller, a power supply rail and a power supply vehicle, the electric ship comprises a shipborne traction motor, and the traction converter is electrically connected with the shipborne traction motor; the output end of the controller is in communication connection with the control end of the traction converter; the power supply vehicle comprises a current collection module which is used for being electrically connected with the power supply rail. Wherein the electric power ship takes electricity from a current collection module of the power supply vehicle through a power cable, and the electric power ship is mechanically connected with the power supply vehicle through a traction rope; the controller is used for controlling the traction converter to perform frequency conversion and voltage transformation so as to regulate the speed of the shipborne traction motor to drive the electric ship and control the running speed of the electric ship; the electric ship is used for driving the power supply vehicle to operate synchronously through the traction rope during operation. The system has the advantages of eliminating pollution, improving efficiency, saving system cost and the like.

Description

Technical Field

[0001] The present application relates to the technical field of electric ship power supply, and in particular to an electric ship, a power supply vehicle and a ship trailer electrified water transport system. Background Art

[0002] Existing shipping systems generally rely on internal combustion engines powered by fossil fuels. However, fossil fuels are not only expensive but also highly polluting to the environment. To reduce fossil fuel consumption and environmental pollution, some are replacing internal combustion engines with energy storage systems such as batteries and supercapacitors. These systems utilize onboard electrical energy as a power source, meaning that electric vessels are driven by onboard electrical energy devices. Compared to internal combustion engines, this increases the weight of electric vessels, takes up space onboard, increases costs, and reduces their transport efficiency.

[0003] In summary, the existing shipping system has problems such as ship pollution and low transportation efficiency. Utility Model Content

[0004] The purpose of this application is to provide an electric water transport system for an electric ship, a power supply vehicle and a ship trailer to solve the problems existing in the prior art such as internal combustion engines polluting the environment, increased dead weight of energy storage vehicles, low transportation efficiency and high costs.

[0005] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] In a first aspect, an embodiment of the present application provides an electric ship, which is applied to a ship trailer electrified water transport system, wherein the ship trailer electrified water transport system further includes a traction rope, a power cable, a traction converter, a controller, a power supply rail, and a power supply vehicle. The electric ship includes a shipboard traction motor, and the traction converter is electrically connected to the shipboard traction motor; the output end of the controller is communicatively connected to the control end of the traction converter; the power supply vehicle includes a current receiving module, and the current receiving module is used to be electrically connected to the power supply rail; wherein,

[0007] The electric ship is electrically connected to the current receiving module of the power supply vehicle through the power cable and draws power from the current receiving module. The electric ship is mechanically connected to the power supply vehicle through a traction rope.

[0008] The controller is used to control the traction converter to perform frequency conversion and voltage conversion, so as to adjust the speed of the ship-borne traction motor to drive the electric ship and control its operating speed;

[0009] The electric ship is used to drive the power supply vehicle to operate synchronously through the traction rope when the electric ship is in operation.

[0010] Optionally, the electric vessel is detachably connected to the traction rope.

[0011] Optionally, the traction inverter and the controller are installed on the electric ship or the power supply vehicle; and when the traction inverter and the controller are installed on the electric ship, the input end of the traction inverter is electrically connected to the current receiving module of the power supply vehicle through a power cable; and when the traction inverter and the controller are installed on the power supply vehicle, the ship trailer electrified water transport system also includes a variable frequency power cable, the input end of the traction inverter is electrically connected to the current receiving module, and the output end of the traction inverter is electrically connected to the traction motor through the variable frequency power cable.

[0012] Optionally, the electric ship further comprises a driving mechanism and a steering gear, and both the driving mechanism and the steering gear are communicatively connected to the controller; wherein,

[0013] The driving mechanism is used to send navigation instructions to the controller, and the controller is used to control the speed of the ship-borne traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller is also used to control the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

[0014] Optionally, the electric ship further includes a heading and speed sensor, which is communicatively connected to the controller; wherein,

[0015] The heading and speed sensor is used to obtain the first speed and direction of the electric ship;

[0016] The driving mechanism is used to output the second speed and direction of the electric ship to the controller, and the controller is used to convert the second speed and direction of the electric ship into corresponding frequency, voltage and direction data and output them to the traction converter and the steering gear steering gear respectively. The traction converter is used to control the ship-borne traction motor according to the frequency and voltage to drive the electric ship to operate, and the steering gear steering gear is used to control the navigation direction of the electric ship according to the direction data.

[0017] The controller is further used to calibrate the first speed magnitude and direction of the electric ship measured by the heading and speed sensor with the second speed magnitude and direction data of the electric ship output by the driving mechanism, and correct errors.

[0018] Optionally, the ship trailer electrified water transport system further includes a driving mechanism, which is provided on a power supply vehicle, and the electric ship further includes a steering gear, which is connected to the controller, and the driving mechanism is in communication with the controller; wherein,

[0019] The driving mechanism is used to send navigation instructions to the controller, and the controller is used to control the speed of the ship-borne traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller is also used to control the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

[0020] Optionally, the electric ship further includes a shipboard power distribution unit, which is electrically connected to the current receiving module of the power supply vehicle through the power cable; the shipboard power distribution unit is used to distribute power to the three-phase and single-phase loads on the electric ship.

[0021] In a second aspect, an embodiment of the present application further provides a power supply vehicle for use in a ship-trailer electrified water transport system, wherein the ship-trailer electrified water transport system further comprises a traction rope and an electric ship; a current receiving module of the power supply vehicle is electrically connected to the power supply rail, and the current receiving module supplies power to the electric ship through the power cable; and when the traction converter is installed on the power supply vehicle, the ship-trailer electrified water transport system further comprises a variable frequency power cable, the current receiving module is further electrically connected to the input end of the traction converter, and the output end of the traction converter is electrically connected to the ship-borne traction motor through the variable frequency power cable; the variable frequency power cable is a three-phase power cable;

[0022] When the electric ship is running, the power supply vehicle is driven by the traction rope to run synchronously with the electric ship along the extension direction of the power supply rail.

[0023] Optionally, the power cable adopts a three-phase four-wire system; the electric ship also includes a shipboard power distribution unit; the current receiving module supplies power to the shipboard power distribution unit through the power cable, the three-phase voltage of the shipboard power distribution unit is used to power three-phase loads, and the single-phase voltage is used to power single-phase loads; when the traction inverter is installed on the electric ship, the power cable is also electrically connected to the input end of the traction inverter.

[0024] Optionally, the power supply vehicle is retractably connected to the traction rope, the power cable, and the variable frequency power cable, so that the power supply vehicle can retract the traction rope, the power cable, and the variable frequency power cable to a set length; the power cable and the variable frequency power cable are not subjected to force.

[0025] Optionally, the power supply vehicle further includes a driving mechanism, and the electric ship further includes a steering gear and a steering gear, the driving mechanism is communicatively connected to the controller, and the steering gear and the steering gear is also communicatively connected to the controller;

[0026] The driving mechanism is used to send navigation instructions to the controller, and the controller is used to control the speed of the ship-borne traction motor according to the navigation instructions to adjust the operating speed of the electric ship; the controller is also used to control the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

[0027] In a third aspect, an embodiment of the present application further provides a boat trailer electrified water transport system, the boat trailer electrified water transport system comprising a towing rope, an electric ship, and a power supply vehicle;

[0028] The power supply vehicle is mechanically connected to the electric ship via the traction rope, and the electric ship is used to drive the power supply vehicle to operate via the traction rope.

[0029] Optionally, the boat trailer electrified water transport system also includes a track bridge and running rails, the track bridge is installed on the river bank of the waterway, the running rails and the power supply rails are both installed on the track bridge, and the power supply vehicle is installed on the running rails and moves along the running rails.

[0030] Compared with the prior art, this application has the following beneficial effects:

[0031] The present application provides a power supply vehicle, an electric ship, and an electrified water transport system for a ship trailer. The electrified water transport system for the ship trailer also includes a traction rope, a power cable, a traction converter, a controller, and a power supply vehicle. The electric ship includes a ship-borne traction motor, and the traction converter is electrically connected to the ship-borne traction motor; the output end of the controller is communicatively connected to the control end of the traction converter; the power supply vehicle includes a current receiving module, which is used to be electrically connected to the power rail; wherein the electric ship draws power from the current receiving module of the power supply vehicle through a power cable, and the electric ship is mechanically connected to the power supply vehicle through a traction rope; the controller is used to control the traction converter to perform frequency conversion and voltage conversion to adjust the speed of the ship-borne traction motor to drive the electric ship and control its operating speed; the electric ship is used to drive the power supply vehicle to operate synchronously through the traction rope when it is running. Since in the present application, the power supply vehicle is used to supply power to the electric ship while the electric ship drives the power supply vehicle to operate synchronously when it is running, only one transmission system needs to be arranged on the electric ship and the power supply vehicle. At the same time, the electric ship always drives the power supply vehicle to operate, which saves the layout cost of the electrified water transport system for the ship trailer as a whole. In addition, the power supply rail is powered by the ground power grid, and the current receiving module of the power supply vehicle draws electricity from the power supply rail and supplies power to the electric ship. The electric ship no longer needs to install internal combustion engines or batteries, super-capacitors and other energy storage electric systems, which can not only solve the environmental pollution problem of internal combustion engines, but also solve the problem that the ship-borne power equipment is heavy and large in size, increases the dead weight of the electric ship, squeezes the effective space of the electric ship, increases costs, and reduces the transportation efficiency of the electric ship.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the modules of the boat trailer electrified water transport system provided in an embodiment of the present application.

[0035] Figure 2 This is one of the application scenario schematics of the boat trailer electrified water transport system provided in this application.

[0036] Figure 3 This is the second schematic diagram of the application scenario of the boat trailer electrified water transport system provided in this application.

[0037] Figure 4 A first module schematic diagram of the boat trailer electrified water transport system provided in an embodiment of the present application.

[0038] Figure 5 A second module schematic diagram of the boat trailer electrified water transport system provided in an embodiment of the present application.

[0039] Figure 6 This is a schematic diagram of the third module of the boat trailer electrified water transport system provided in an embodiment of the present application.

[0040] Figure 7 This is a schematic diagram of the fourth module of the boat trailer electrified water transport system provided in an embodiment of the present application.

[0041] Figure 8 A schematic diagram of the layout of the track bridge provided in an embodiment of the present application.

[0042] In the figure: 100-power supply vehicle; 110-current receiving module; 200-electric ship; 210-traction converter; 220-shipboard traction motor; 230-controller; 240-heading and speed sensor; 250-shipboard power distribution unit; 260-driving mechanism; 270-servo steering gear; 300-power rail; 400-traction rope; 500-power cable; 600-track bridge; 700-traveling rail. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0047] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0048] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0049] Existing ships are generally driven by internal combustion engines, which consume a large amount of fossil energy, causing energy consumption and pollution problems. Therefore, in order to improve this problem, we can develop water transport electrification and use electricity as a power source.

[0050] However, if the internal combustion engine is directly replaced with an energy storage electric system using batteries, supercapacitors, etc. as carriers, it will increase the weight of the ship, while occupying the precious space of the electric ship and reducing the ship's transportation efficiency. In addition, due to the weight and volume limitations of the energy storage electric system, its energy storage is difficult to achieve high-power, long-distance transportation, and the cost is very high.

[0051] In view of this, in order to solve the above problems, an embodiment of the present application provides a power supply vehicle to supply power to the electric ship, which drives the power supply vehicle to operate when the electric ship is running, thereby realizing a solution for synchronous operation between the electric ship and the power supply vehicle, thereby achieving the purpose of simplifying the system and saving costs.

[0052] The following is an exemplary description of the power supply vehicle provided in this application:

[0053] As an implementation, see Figure 1 and Figure 2 The power supply vehicle 100 is used in a ship-trailer electrified water transport system. The ship-trailer electrified water transport system also includes a towing rope 400, a power cable 500, a traction converter, a controller, and the power supply vehicle 100. The power supply vehicle 100 includes a current receiving module 110, which is electrically connected to the power rail 300. The power supply vehicle 100 is electrically connected to the electric ship 200 via the power cable 500. The power supply vehicle 100 and the electric ship 200 are mechanically connected via the towing rope 400. The current receiving module 110 is used to draw current from the power rail 300 and supply power to the electric ship 200. When the electric ship 200 is operating, the power supply vehicle 100 is driven by the towing rope 400 to operate along the extension direction of the power rail 300, and the power supply device on the power supply vehicle 100 is not activated. For example, the power supply vehicle is not equipped with a power device, or the power supply vehicle is equipped with a power device but the power device is not running.

[0054] In this application, the power supply vehicle 100 is not equipped with a power unit. Driven by the electric ship 200, the power supply vehicle 100 always operates synchronously with the electric ship 200, achieving the effect of simplifying the system and reducing costs. In addition, the power supply vehicle 100 can draw electricity from the power supply rail 300 and supply power to the electric ship 200, eliminating the need for large energy storage equipment on the electric ship 200 and eliminating the need to occupy space on the electric ship 200. This further enhances the carrying capacity of the electric ship 200 and improves transportation efficiency.

[0055] It should be noted that electric vessels are equipped with onboard traction motors, which serve as the power source for the electric vessel and are installed on the electric vessel. The traction converter and controller, which serve as the transmission and control devices for the onboard traction motors, can be installed on the electric vessel or on a power supply vehicle. When the traction converter and controller are installed on the electric vessel, the input end of the traction converter is electrically connected to the current receiving module of the power supply vehicle via a power cable. In other words, the current receiving module supplies power to the traction converter and also to the power distribution unit of the electric vessel via the power cable.

[0056] Understandably, when the traction converter and controller are installed on the power supply vehicle, the ship-trailer electrified water transport system also includes a variable-frequency power cable, which electrically connects the output of the traction converter to the input of the ship's traction motor. Furthermore, when the traction converter and controller are installed on the power supply vehicle, only the ship's traction motor needs to be installed on the electric vessel, further reducing the weight of the electric vessel and leaving more space for transportation, significantly improving the transport efficiency of the electric vessel.

[0057] In specific applications, please refer to Figure 2 For example, the installation of a traction converter and controller on an electric vessel is used as an example. When an electric vessel 200 is navigating a river, a power rail 300 can be installed on the side of the river. The power supply vehicle 100 moves along the extension direction of the power rail 300, drawing power from the rail 300 and supplying power to the electric vessel 200 via the power cable 500. Alternatively, power rails 300 can be installed on both sides of the river. During navigation, the electric vessel 200 can draw power from different power rails 300 via the power supply vehicle 100, depending on the direction of navigation.

[0058] Furthermore, in one implementation, to facilitate the operation of the power supply vehicle 100, the boat trailer electrified water transport system further includes a power supply rail 300, a track bridge 600, and a running rail 700. The track bridge 600 is laid on the riverbank of the waterway, and the running rail 700 and the power supply rail 300 are both installed on the track bridge 600, and the power supply vehicle 100 travels on the running rail 700. The track bridge 600 can be built on both sides of the river, and the track bridge 600 extends along the river. In one implementation, the track bridge 600 can be set parallel to the river. Furthermore, the running rail 700 and the power supply rail 300 are both built on the track bridge 600, and the power supply vehicle 100 travels along the running rail 700.

[0059] Understandably, this arrangement allows the running rails 700 and the power supply rails 300 to maintain a certain height difference from the water surface, making them less susceptible to malfunction. Furthermore, when the power supply vehicle 100 moves along the running rails 700, it is less likely to be blocked by other objects, thus ensuring the normal operation of the power supply vehicle 100. Since the power supply vehicle 100 needs to be connected to the electric vessel 200 via the power cable 500 and the towing rope 400, the height of the track bridge 600 can be set to a higher position to ensure that the power cable 500 and the towing rope 400 are not blocked by other objects.

[0060] In a possible implementation, the height of the connection point between the power supply vehicle 100 and the traction rope 400 is greater than the height of the connection point between the power ship 200 and the traction rope 400. Figure 3 As shown, the connection point between the electric ship 200 and the towing rope 400 is point A, and the connection point between the power supply vehicle 100 and the towing rope 400 is point B. The height of point B is greater than the height of point A. Based on this setting, when the electric ship 200 moves forward, a downward force will be applied to the power supply vehicle 100 through the towing rope 400. On the basis of this force, a component force extending along the track bridge 600 will be generated. Under the action of this component force, the power supply vehicle 100 will be driven forward; at the same time, a component force in the vertical downward direction will also be generated. Under the action of this component force, it can be ensured that the power supply vehicle 100 always runs close to the running rail 700, and derailment failure is not likely to occur.

[0061] Moreover, since the electric ship 200 needs to tow the power supply vehicle 100 at all times, the electric ship 200 always runs in front of the power supply vehicle 100. Considering the stability of the force, as an implementation method, one end of the towing rope 400 is connected to the tail of the electric ship 200, and the other end of the towing rope 400 is connected to the head of the power supply vehicle 100.

[0062] It should be noted that this application does not limit the material of the traction rope 400. Optionally, the traction rope 400 needs to be flexible and sufficiently strong, and nylon rope or the like can be used. Furthermore, during operation, the traction rope 400 is always taut. As for the power cable 500 and the variable frequency power cable, since they do not need to be subjected to force, they can be configured as cables with a certain degree of flexibility.

[0063] In one implementation, the power cable 500, the variable frequency power cable and the traction rope 400 can be set independently. In another implementation, the power cable 500, the variable frequency power cable and the traction rope 400 can also be integrated into one. After integration, the cable can realize power supply and traction functions at the same time, and only one cable is required, which is more convenient to manage.

[0064] At the same time, since the position of the electric ship 200 may need to be adjusted during operation, for example, when a reef or other obstacle appears in front of the electric ship 200, the electric ship 200 needs to deviate from a certain position to operate. At this time, the position between the electric ship 200 and the power supply vehicle 100 may increase or decrease, which may cause the traction rope 400 to be broken due to excessive force, or the power supply vehicle 100 to derail. In view of this, in order to prevent the above situation from occurring during the operation of the electric ship 200, the power supply vehicle 100, the power cable 500, and the variable frequency power cable traction rope 400 are optionally retractable, so that the power supply vehicle 100 can retract and extend the power cable 500, the variable frequency power cable, and the traction rope 400 to a set length.

[0065] For example, an automatic retractable rack is provided on the power supply vehicle 100. When the distance between the electric vessel 200 and the power supply vehicle 100 increases, the automatic retractable rack releases longer power cables 500, variable frequency power cables and traction ropes 400 to ensure that the traction rope 400 does not break; when the distance between the electric vessel 200 and the power supply vehicle 100 decreases, the excess power cables 500, variable frequency power cables and traction ropes 400 are automatically retracted.

[0066] In one implementation, the retraction and extension of the power cable 500, the variable frequency power cable, and the towing rope 400 can be controlled through communication control. For example, the electric vessel 200 is equipped with a communication module, and the power supply vehicle 100 is also equipped with a communication module. The power supply vehicle 100 is also equipped with a remote control that can control the retraction and extension of the automatic retraction and extension rack. When the electric vessel 200 is operating, the operator can adjust the length of the power cable 500, the variable frequency power cable, and the towing rope 400 in real time according to the actual operating conditions. For example, if there is a reef ahead of the vessel and it needs to be avoided, the electric vessel 200 needs to move away from the power supply vehicle 100. In this case, the operator can send a command to the power supply vehicle 100 via the communication module on the electric vessel 200, thereby causing the power supply vehicle 100 to extend a longer length of the power cable 500, the variable frequency power cable, and the towing rope 400. Of course, when the electric vessel 200 needs to run close to the power supply vehicle 100, the operator can also send instructions to the power supply vehicle 100 through the communication module on the electric vessel 200, thereby causing the power supply vehicle 100 to retract the redundant power cables 500, variable frequency power cables and traction ropes 400.

[0067] In one implementation, the power supply vehicle also includes a driving mechanism, and the electric ship also includes a steering gear and a steering gear. The driving mechanism is communicatively connected to the controller, and the steering gear and the steering gear are connected to the controller; the driving mechanism is used to send navigation instructions to the controller, and the controller is used to control the speed of the shipboard traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller is also used to control the working state of the steering gear and the steering gear according to the navigation instructions to adjust the heading of the electric ship.

[0068] In this implementation, the driver can be located on the power supply vehicle and control the course and speed of the electric ship through the driving mechanism. In addition, the driver can also control the retraction and extension of the power cable and towing rope through the driving mechanism, which is not limited here.

[0069] It should be noted that when the power supply vehicle and the electric ship are connected for communication, wireless communication or wired communication can be used. When wired communication is used, communication between the two can be achieved through optical fiber, and the optical fiber can be integrated with the towing rope, which will not be elaborated here.

[0070] In the present application, the power supply vehicle 100 supplies power to the electric ship 200. When the traction converter and the controller are installed on the electric ship, one end of the power cable is connected to the current receiving module of the power supply vehicle, and the other end is connected to the distribution unit of the electric ship and the input end of the traction converter. The power cable 500 provided in the present application adopts a three-phase four-wire system. The electric ship includes a shipboard distribution unit. The three-phase voltage is used to power the traction converter and the shipboard distribution unit, so that the three-phase voltage of the shipboard distribution unit can be used to power three-phase loads such as air conditioners; and the single-phase voltage is used for single-phase loads, such as lighting and other single-phase loads. When the traction converter and the controller are installed on the power supply vehicle, the input end of the traction converter is electrically connected to the current receiving module, and the output end of the traction converter is electrically connected to the traction motor through the variable frequency power cable. The variable frequency power cable is a three-phase power cable, and the power cable supplies power to the distribution unit of the electric ship.

[0071] In summary, the working principle of the power supply vehicle 100 provided in this application is:

[0072] The flexibility and scalability of the power cable are used to connect the electric ship and the power supply vehicle to adapt to the swaying of the electric ship in the water and maintain reliable power supply to the electric ship. The power supply vehicle 100 draws power from the power supply rail 300 and supplies power to the electric ship 200. The electric ship no longer needs to install an internal combustion engine or an energy storage electric system such as a battery or supercapacitor. This can not only solve the environmental pollution problem of the internal combustion engine, but also solve the problem that the onboard electric energy device is heavy and bulky, which increases the deadweight of the electric ship, squeezes the effective space of the electric ship, increases costs, and reduces the transportation efficiency of the electric ship. The electric ship 200 uses the power provided by the power supply vehicle as a power source to drive the electric ship to operate, and uses the power provided by the power supply vehicle to distribute power to other loads on the electric ship. At the same time, there is no power device on the power supply vehicle 100. During the operation of the electric ship 200, the power supply vehicle 100 is driven by the towing rope 400 to operate synchronously, which can simplify the system and reduce costs.

[0073] Based on the above implementation, the present application also provides an electric ship 200. Figure 4 The electric ship 200 includes a traction converter 210, a shipboard traction motor 220, a controller 230, a driving mechanism 260, a heading and speed sensor 240, and a steering gear 270. The ship trailer electrified water transport system also includes a towing rope and a power supply vehicle. The output end of the traction converter 210 is electrically connected to the shipboard traction motor 220, and the input end of the traction converter 210 is connected to the current receiving module 110 of the power supply vehicle via a power cable. The electric ship 200 is mechanically connected to the power supply vehicle 100 via a towing rope 400. The controller 230 is used to control the frequency and voltage conversion of the traction converter 210 to control the speed of the shipboard traction motor 220 and further drive the electric ship 200. The output end of the driving mechanism is communicatively connected to the input end of the controller, and the output end of the controller is communicatively connected to the control end of the traction converter. When the electric ship 200 is in operation, the electric ship 200 drives the power supply vehicle 100 to operate synchronously via the towing rope 400.

[0074] Specifically, the onboard traction motor 220 is connected to the propeller of the electric vessel 200, and the traction converter 210 receives power from the power supply vehicle 100 via a power cable 500. The controller 230 controls the output frequency and voltage of the traction converter 210, changing the speed of the onboard traction motor 220 through voltage and frequency conversion, regulating the speed of the onboard traction motor 220, and thereby driving the propeller to drive the electric vessel 200. Because the electric vessel 200 is powered by the ground power grid, there is no need to install energy storage devices such as batteries on the electric vessel 200, which reduces the weight of the electric vessel 200 and saves space on the electric vessel 200, thereby improving transportation efficiency.

[0075] In addition, the electric ship 200 further includes a heading and speed sensor 240 and a steering gear and steering device 270 . The heading and speed sensor 240 and the steering gear and steering device 270 are both communicatively connected to the controller 230 . The heading and speed sensor 240 is used to obtain the speed and direction of the electric ship 200 .

[0076] The driving mechanism is used to output the second speed and direction of the electric ship to the controller, the controller is used to convert the second speed and direction of the electric ship into corresponding frequency, voltage and direction data and output them to the traction inverter and the steering gear. The traction inverter is used to control the speed of the shipboard traction motor according to the frequency and voltage to drive the electric ship to operate, and the steering gear is used to control the navigation direction of the electric ship according to the direction data; the controller is also used to calibrate the first speed and direction of the electric ship measured by the heading and speed sensor with the second speed and direction data of the electric ship output by the driving mechanism, and correct errors.

[0077] For example, when the electric vessel 200 deviates from its course due to the influence of wind or water current, the distance between the electric vessel 200 and the power supply vehicle 100 may gradually become farther or closer. Alternatively, the electric vessel 200 may sail at a certain speed, and when encountering environmental influences such as water current, the sailing speed may slow down. At this time, the speed and course of the electric vessel 200 need to be adjusted in real time.

[0078] In this scenario, after acquiring heading and speed information, controller 230 calculates the corresponding output frequency and voltage of traction converter 210. The onboard measurement and control system then controls the output of traction converter 210, changing the speed of onboard traction motor 220 through voltage and frequency conversion, which in turn drives the propeller to propel electric vessel 200. This adjustment method ensures that the distance between electric vessel 200 and power supply vehicle 100 remains essentially constant, resulting in more stable operation.

[0079] Specifically, the heading and speed sensor is used to obtain the first speed magnitude and direction of the electric ship;

[0080] In addition, the driving mechanism is used to output the second speed magnitude and direction of the electric ship to the controller, the controller is used to convert the second speed magnitude and direction of the electric ship into corresponding frequency, voltage and direction data and output them to the traction inverter and the steering gear, the traction inverter is used to control the shipboard traction motor according to the frequency and voltage to drive the electric ship to operate, and the steering gear is used to control the navigation direction of the electric ship according to the direction data; the controller is also used to calibrate the first speed magnitude and direction of the electric ship measured by the heading and speed sensor with the second speed magnitude and direction data of the electric ship output by the driving mechanism, and correct errors.

[0081] In one implementation, the controller can adjust the second speed magnitude and direction in real time according to the comparison results of the first speed magnitude and direction and the second speed magnitude and direction into corresponding frequency, voltage and direction values. For example, taking the speed magnitude as an example, the second speed magnitude represents the target speed and the first speed magnitude represents the actual speed. When the second speed magnitude is greater than the first speed magnitude, it indicates that the actual speed is less than the target speed. At this time, it is necessary to increase the converted frequency and voltage values, thereby increasing the actual speed of the electric ship until the second speed magnitude is equal to the first speed magnitude.

[0082] In addition, the electric ship 200 may also have other non-traction electrical loads, such as air conditioners and lighting. Therefore, the electric ship 200 also includes an onboard power distribution unit 250, which is electrically connected to the current receiving module 110. The onboard power distribution unit 250 is used to obtain power from the current receiving module 110 and distribute power to the loads on the electric ship 200. For example, the onboard power distribution unit 250 distributes power according to the needs of different loads.

[0083] On this basis, the present application does not limit the power supply mode of the current receiving module 110 , wherein the three-phase line voltage of the power supply is used for the traction converter and the three-phase load, and the three-phase phase voltage of the power supply is used for the single-phase load.

[0084] In one implementation, the electric vessel 200 is detachably connected to the towing rope 400 and the power cable 500. For example, the electric vessel 200 is connected to the towing rope 400 and the power cable 500 in a plug-in manner. When the electric vessel 200 reaches the dock, the towing rope 400 and the power cable 500 can be pulled out from the electric vessel 200.

[0085] For example, when transporting cargo from Pier X to Pier Y, the electric vessel 200A is connected to the towing rope 400a and the power cable 500a, and the electric vessel 200A draws power from the power supply vehicle 100 through the power cable 500a, and at the same time drives the power supply vehicle 100 to run through the towing rope 400a. When arriving at Pier Y, the towing rope 400a and the power cable 500a can be detached from the electric vessel 200A. At the same time, when unloading the electric vessel 200A, the electric vessel 200B needs to return from Pier Y to Pier X. At this time, the electric vessel 200B can be connected to the towing rope 400a and the power cable 500a and start operation.

[0086] The above-mentioned configuration ensures that there is not only one corresponding relationship among the electric vessel 200 , the traction rope 400 and the power cable 500 , which is more flexible in actual use.

[0087] In the above application, the driver can adjust the target speed and heading of the electric ship through the driving mechanism on the electric ship. At the same time, the controller obtains the actual speed and heading of the electric ship through the heading and speed sensor, and makes real-time adjustments to make the actual speed and heading the same as the target speed and heading.

[0088] On this basis, the power supply vehicle and the electric vessel can communicate, for example, via fiber optics for wired communication or wirelessly via Bluetooth or Wi-Fi. When fiber optic communication is used, the fiber, traction rope, and power cable can be integrated into one unit, and the fiber, like the power cable, is stress-free. Meanwhile, the current collection module can supply power to the driving mechanism. Of course, a power distribution unit can be added between the current collection module and the driving mechanism to configure the power required by the driving mechanism.

[0089] It should be noted that, in this application, there are many ways to set up and install the controller 230 and the traction converter 210, such as Figure 4 In this example, controller 230 and traction converter 210 are both installed on electric vessel 200. Traction converter 210 is electrically connected to current receiving module 110 on the power supply vehicle via power cables to draw power. Furthermore, steering mechanism 260 is typically positioned relative to controller 230. This arrangement allows users to control electric vessel 200 from within, achieving navigation speed and direction control.

[0090] See also Figure 5 Alternatively, the controller and steering mechanism can be located on the power supply vehicle, while the traction converter 210 can be located on the electric vessel 200. In this case, the controller is connected to the steering mechanism, traction converter 210, steering gear, and heading and speed sensors via signal lines, typically optical fiber. This allows users to control the electric vessel 200 from the power supply vehicle.

[0091] Of course, see Figure 6 Alternatively, the driving mechanism, controller, and traction converter can all be installed on a power supply vehicle, allowing users to control the electric vessel 200 from within the vehicle. This reduces the weight of the electric vessel 200 and the space occupied by the traction converter 210. In this case, the ship-trailer electrified water transport system also includes a variable-frequency power cable, through which the traction converter is connected to the shipboard traction motor. The traction converter regulates the speed of the shipboard traction motor through frequency and voltage conversion, while the power cable 500 supplies power to the shipboard power distribution unit.

[0092] See also Figure 7Alternatively, only the traction converter can be installed on the power supply vehicle, while the driving mechanism and controller can be installed on the electric vessel. In this case, the traction converter and controller communicate with each other, and the traction converter and the vessel's traction motor are connected via a variable-frequency power cable. Power cable 500 then supplies power to the onboard power distribution unit. This approach allows users to control the electric vessel from aboard. Furthermore, placing the traction converter on the power supply vehicle reduces the weight of the electric vessel and prevents the traction converter from occupying available space on the vessel.

[0093] Of course, in actual control, other control methods can also be used. For example, wireless communication can be used to achieve control, so that users can control the speed and direction of the ship on the ground.

[0094] Based on the above implementation method, an embodiment of the present application also provides a ship trailer electrified water transport system, which includes a power cable 500, a variable frequency power cable, a traction rope 400 and the above-mentioned power supply vehicle 100 and electric ship 200. The power supply vehicle 100 is electrically connected to the electric ship 200 through the power cable 500 and sometimes also through the variable frequency power cable; the power supply vehicle 100 is also mechanically connected to the electric ship 200 through the traction rope 400, and the electric ship 200 is used to drive the power supply vehicle 100 to operate through the traction rope 400.

[0095] In addition, the boat trailer electrified water transport system also includes a power supply rail 300, a track bridge 600 and a running rail 700. The track bridge 600 is installed on the river bank of the waterway. The running rail 700 and the power supply rail 300 are both installed on the track bridge 600. The power supply vehicle 100 is installed on the running rail 700 and moves along the running rail 700.

[0096] In one implementation, see Figure 8 The rail bridge 600 can be arranged in a ring shape. For example, if the rail bridge 600 between Terminal X and Terminal Y is arranged in a ring shape, a first running track 710 is provided from Terminal X to Terminal Y, and a second running track 720 is provided from Terminal Y to Terminal X. On this basis, when cargo needs to be transported from Terminal X to Terminal Y, the first running track 710 can be used, and when cargo needs to be transported from Terminal Y to Terminal X, the second running track 720 can be used.

[0097] Furthermore, the electric vessel 200 is detachably connected to the power cable 500 and the traction rope 400. Therefore, upon arrival at the dock, the electric vessel 200 can be detached from the power cable 500 and the traction rope 400, and the electric vessel 200 can be flexibly connected to the power supply vehicle 100 according to actual needs.

[0098] Therefore, the working principle of the boat trailer electrification water transport system provided by this application is:

[0099] The flexibility and scalability of the power cable are utilized to connect the electric vessel and the power supply vehicle, adapting to the swaying of the electric vessel in the water and maintaining reliable power supply to the electric vessel. The power supply vehicle 100 supplies power to the electric vessel 200 via the power cable 500. The electric vessel 200 uses this power source as its power source and also uses this power source to power other electrical equipment on the electric vessel 200. The electric vessel 200 and the power supply vehicle 100 are connected by a towing rope 400. During the operation of the electric vessel 200, the towing rope 400 drives the power supply vehicle 100 to move synchronously, thereby achieving the effect of the power supply vehicle 100 supplying power to the electric vessel 200, and the electric vessel 200 in turn driving the power supply vehicle 100.

[0100] In one implementation, each power supply vehicle 100 is provided with a corresponding power cable 500 and a towing rope 400. When the electric vessel 200 needs to depart from the dock, the electric vessel 200 is connected to the power supply vehicle 100 located forward on the rail bridge 600 and operates. Optionally, at the dock, the power supply vehicles 100 are arranged in sequence, and when the power cable 500 is disconnected from the towing rope 400, the power supply vehicle 100 can retract the power cable 500 and the towing rope 400. When the electric vessel 200 needs to depart from the dock, for example, the electric vessel 200A needs to depart from dock Y, and the power supply vehicle 100 located forward on the rail bridge 600 is the power supply vehicle 100a, the power supply vehicle 100a is controlled to lower its power cable 500 and towing rope 400, and connect the power cable 500 and towing rope 400 to the electric vessel 200A. After arriving at dock X, the power cable 500 and towing rope 400 are disconnected from the electric vessel 200A.

[0101] Through the ship trailer electrified water transport system provided in this application, the power supply vehicle 100 and the electric ship 200 can be flexibly paired for use. In actual applications, the call of the electric ship 200 and the power supply vehicle 100 is more convenient.

[0102] In summary, the present application provides a power supply vehicle, an electric ship, and an electrified water transport system for a ship trailer. The electrified water transport system for the ship trailer also includes a traction rope, a power cable, a traction converter, a controller, and a power supply vehicle. The electric ship includes a ship-borne traction motor, and the traction converter is electrically connected to the ship-borne traction motor; the output end of the controller is communicatively connected to the control end of the traction converter; the power supply vehicle includes a current receiving module, which is used to be electrically connected to the power rail; wherein the electric ship draws power from the current receiving module of the power supply vehicle through a power cable, and the electric ship is mechanically connected to the power supply vehicle through a traction rope; the controller is used to control the traction converter to perform frequency conversion and voltage conversion to adjust the speed of the ship-borne traction motor to drive the electric ship and control its operating speed; the electric ship is used to drive the power supply vehicle to operate synchronously through the traction rope when it is running. Since in the present application, the power supply vehicle is used to supply power to the electric ship while the electric ship drives the power supply vehicle to operate synchronously when it is running, only one transmission system needs to be arranged on the electric ship and the power supply vehicle. At the same time, the electric ship always drives the power supply vehicle to operate, which saves the layout cost of the electrified water transport system for the ship trailer as a whole. In addition, the power supply rail is powered by the ground power grid, and the current receiving module of the power supply vehicle draws electricity from the power supply rail and supplies power to the electric ship. The electric ship no longer needs to install internal combustion engines or batteries, super-capacitors and other energy storage electric systems, which can not only solve the environmental pollution problem of internal combustion engines, but also solve the problem that the ship-borne power equipment is heavy and large in size, increases the dead weight of the electric ship, squeezes the effective space of the electric ship, increases costs, and reduces the transportation efficiency of the electric ship.

[0103] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0104] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An electric ship, characterized in that: Applied to the ship trailer electrified water transport system, the ship trailer electrified water transport system also includes a traction rope, a power cable, a traction converter, a controller, a power supply rail and a power supply vehicle, the electric ship includes a shipboard traction motor, the traction converter is electrically connected to the shipboard traction motor; the output end of the controller is communicatively connected to the control end of the traction converter; the power supply vehicle includes a current receiving module, the current receiving module is used to be electrically connected to the power supply rail; wherein, The electric ship is electrically connected to the current receiving module of the power supply vehicle through the power cable and draws power from the current receiving module. The electric ship is mechanically connected to the power supply vehicle through a traction rope. The controller is used to control the traction converter to perform frequency conversion and voltage conversion, so as to adjust the speed of the ship-borne traction motor to drive the electric ship and control its operating speed; The electric ship is used to drive the power supply vehicle to operate synchronously through the traction rope when the electric ship is in operation.

2. The electric ship according to claim 1, characterized in that: The electric ship is detachably connected to the traction rope.

3. The electric ship according to claim 1, characterized in that: The traction inverter and the controller are installed on the electric ship or the power supply vehicle; and when the traction inverter and the controller are installed on the electric ship, the input end of the traction inverter is electrically connected to the current receiving module of the power supply vehicle through a power cable; when the traction inverter and the controller are installed on the power supply vehicle, the ship trailer electrified water transport system also includes a variable frequency power cable, the input end of the traction inverter is electrically connected to the current receiving module, and the output end of the traction inverter is electrically connected to the traction motor through the variable frequency power cable.

4. The electric ship according to claim 1, characterized in that: The electric ship further includes a driving mechanism and a steering gear, and both the driving mechanism and the steering gear are connected to the controller in a communication manner; wherein, The driving mechanism is used to send navigation instructions to the controller, and the controller controls the speed of the ship-borne traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller also controls the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

5. The electric ship according to claim 4, characterized in that: The electric ship further includes a heading and speed sensor, which is in communication with the controller; wherein, The heading and speed sensor is used to obtain the first speed and direction of the electric ship; The driving mechanism is used to output the second speed and direction of the electric ship to the controller, and the controller is used to convert the second speed and direction of the electric ship into corresponding frequency, voltage and direction data and output them to the traction converter and the steering gear steering gear respectively. The traction converter is used to control the ship-borne traction motor according to the frequency and voltage to drive the electric ship to operate, and the steering gear steering gear is used to control the navigation direction of the electric ship according to the direction data. The controller is further used to calibrate the first speed magnitude and direction of the electric ship measured by the heading and speed sensor with the second speed magnitude and direction data of the electric ship output by the driving mechanism, and correct errors.

6. The electric ship according to claim 1, characterized in that: The ship trailer electrified water transport system further includes a driving mechanism, which is arranged on a power supply vehicle. The electric ship further includes a steering gear and a steering gear, which is connected to the controller, and the driving mechanism is in communication with the controller. The driving mechanism is used to send navigation instructions to the controller, and the controller controls the speed of the ship-borne traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller also controls the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

7. The electric ship according to claim 1, characterized in that: The electric ship also includes a shipboard power distribution unit, which is electrically connected to the current receiving module of the power supply vehicle through the power cable; the shipboard power distribution unit is used to distribute power to the three-phase and single-phase loads on the electric ship.

8. A power supply vehicle, characterized in that: Applicable to a ship-trailer electrified water transport system, the ship-trailer electrified water transport system further comprising a traction rope and the electric ship according to any one of claims 1 to 7; the current receiving module of the power supply vehicle is electrically connected to the power supply rail, and the current receiving module supplies power to the electric ship through the power cable; and when the traction converter is installed on the power supply vehicle, the ship-trailer electrified water transport system further comprises a variable frequency power cable, the current receiving module is also electrically connected to the input end of the traction converter, and the output end of the traction converter is electrically connected to the ship-borne traction motor through the variable frequency power cable; the variable frequency power cable is a three-phase power cable; When the electric ship is running, the power supply vehicle is driven by the traction rope to run synchronously with the electric ship along the extension direction of the power supply rail.

9. The power supply vehicle according to claim 8, wherein: The power cable adopts a three-phase four-wire system; the electric ship also includes a shipboard power distribution unit; the current receiving module supplies power to the shipboard power distribution unit through the power cable, the three-phase voltage of the shipboard power distribution unit is used to power three-phase loads, and the single-phase voltage is used to power single-phase loads; when the traction inverter is installed on the electric ship, the power cable is also electrically connected to the input end of the traction inverter.

10. The power supply vehicle according to claim 9, wherein: The power supply vehicle is retractably connected to the traction rope, the power cable, and the frequency conversion power cable, so that the power supply vehicle can retract the traction rope, the power cable, and the frequency conversion power cable to a set length; The power cable and the frequency conversion power cable are not subjected to stress.

11. The power supply vehicle according to claim 8, wherein: The power supply vehicle further includes a driving mechanism, and the electric ship further includes a steering gear and a steering gear. The driving mechanism is communicatively connected to the controller, and the steering gear and the steering gear are also communicatively connected to the controller. The driving mechanism is used to send navigation instructions to the controller, and the controller controls the speed of the ship-borne traction motor through the traction inverter according to the navigation instructions to adjust the operating speed of the electric ship; the controller also controls the working state of the servo steering gear according to the navigation instructions to adjust the heading of the electric ship.

12. A boat trailer electrified water transport system, characterized in that: The boat trailer electrified water transport system comprises a towing rope, an electric vessel according to any one of claims 1 to 7, and a power supply vehicle according to any one of claims 8 to 11. The power supply vehicle is mechanically connected to the electric ship via the traction rope, and the electric ship is used to drive the power supply vehicle to operate via the traction rope.

13. The boat trailer electrified water transportation system according to claim 12, wherein: The boat trailer electrified water transport system also includes a track bridge and running rails. The track bridge is installed on the river bank of the waterway. The running rails and the power supply rails are both installed on the track bridge. The power supply vehicle is installed on the running rails and moves along the running rails. The power supply rails are powered by the ground power grid.

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