Control method of marine range extending system, storage medium and marine range extending system

Abstract

The embodiment of the application provides a kind of control method of marine range extending system, storage medium and marine range extending system, marine range extending system includes motor and the battery connected with motor, range extender, range extender is also connected with battery, control method includes: when battery drives motor, the demand power of motor, the output power of battery is acquired in real time;In response to demand power is greater than output power, control range extender starts to output energy.The control method of the embodiment of the application, the demand power of motor and the output power of battery are acquired in real time, when demand power is greater than output power, can automatically respond, start range extender to output energy, compared with the manual start range extender of traditional mode, the embodiment of the application can automatically control range extender to start and output energy, to improve the endurance of ship, without user manual operation and intervention, can improve the intelligence and use convenience of system.

Description

Technical Field

[0001] This application relates to the field of marine power system technology, and in particular to a control method, storage medium and marine range extender system. Background Technology

[0002] An outboard motor is a power unit suspended from small vessels such as boats and dinghies, propelling the ship. With the development of new energy technologies, outboard motors are increasingly adopting new energy sources as their power source, such as batteries. For battery-powered outboard motors, range extenders can be used to extend the ship's range.

[0003] In existing technologies, the starting of range extenders is usually controlled by simple relays, which mainly relies on manual operation and control by the user and cannot achieve intelligent operation. Summary of the Invention

[0004] This application provides a control method, storage medium, and marine range extender system, which can automatically control the range extender to start and output energy, thereby improving the ship's range without requiring manual operation and intervention from the user, thus improving the system's intelligence and ease of use.

[0005] This application provides a control method for a marine range extender system. The marine range extender system includes a motor, a battery connected to the motor, and a range extender. The range extender is also connected to the battery. The control method includes: When the battery drives the motor, the required power of the motor and the output power of the battery are acquired in real time. In response to the demand power being greater than the output power, the range extender is controlled to start and output energy.

[0006] In some embodiments, after controlling the range extender to start and output energy, the method further includes: Obtain the difference between the required power and the output power; The power supply target of the range extender is determined based on the difference, and the range extender is controlled to supply power to the power supply target, wherein the power supply target includes at least one of the motor and the battery.

[0007] In some embodiments, determining the power supply target of the range extender based on the difference and controlling the range extender to supply power to the power supply target includes: Determine whether the difference is greater than a preset difference; If the difference is greater than the preset difference, the motor is identified as the power supply target, and the range extender is controlled to supply power to the motor to drive the motor.

[0008] In some embodiments, after controlling the range extender to supply power to the motor to drive the motor, the method further includes: The battery is controlled to supply power to the motor to drive the motor.

[0009] In some embodiments, determining the power supply target of the range extender based on the difference and controlling the range extender to supply power to the power supply target further includes: If the difference is not greater than the preset difference, then the state of charge of the battery is obtained; The range extender determines the power supply target based on the state of charge and controls the range extender to supply power to the power supply target.

[0010] In some embodiments, determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is less than a first preset value; If the state of charge is less than a first preset value, the battery is identified as the power source, and the range extender is controlled to supply power to the battery for charging, and the battery is controlled to drive the motor.

[0011] In some embodiments, determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is greater than or equal to a first preset value and less than a second preset value; If the state of charge is greater than or equal to a first preset value and less than a second preset value, then both the motor and the battery are identified as power supply objects, and the range extender is controlled to supply power to the motor to drive the motor, and the range extender is controlled to supply power to the battery to charge it.

[0012] In some embodiments, determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is greater than a second preset value; If the state of charge is greater than the second preset value, the motor is identified as the power supply object, and the range extender is controlled to supply power to the motor to drive the motor.

[0013] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of the marine range extender system of any of the above embodiments.

[0014] This application also provides a marine range extender system, including a control unit and a motor, a battery, and a range extender connected to the control unit. The motor is connected to the battery and the range extender, and the range extender is also connected to the battery. The control unit is used to execute the control method of the marine range extender system of any of the above embodiments.

[0015] In the control method of this application embodiment, the required power of the motor and the output power of the battery are acquired in real time. When the required power is greater than the output power, the system can automatically respond and start the range extender to output energy. Compared with the traditional method of manually starting the range extender, this application embodiment can automatically control the range extender to start and output energy, thereby improving the ship's endurance. No manual operation or intervention by the user is required, which can improve the intelligence and ease of use of the system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the marine range extender system according to an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the first type of control method for a marine range extender system according to an embodiment of this application.

[0019] Figure 3 This is a second flowchart illustrating the control method of a marine range extender system according to an embodiment of this application.

[0020] Figure 4 This is a third flowchart illustrating the control method for a marine range extender system according to an embodiment of this application.

[0021] Figure 5 This is a schematic diagram illustrating the determination of the power supply target of the range extender based on the state of charge of the battery in an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] This application provides a marine range extender system that can be applied to small vessels such as boats and dinghies to propel the vessel.

[0024] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a marine range extender system according to an embodiment of this application. The marine range extender system 100 includes a motor 10, a battery 20, and a range extender 30.

[0025] The motor 10 is used to drive the ship's propeller to rotate, thereby propelling the ship's navigation. In some embodiments, the motor 10 can be a brushless DC motor. Understandably, in practical applications, the motor 10 can be integrated into the ship's steering gear.

[0026] Battery 20 is connected to motor 10 and is used to drive motor 10 to rotate. Battery 20 can be a commonly used energy storage battery such as a lithium battery or a fuel cell. In practical applications, the type and capacity of battery 20 can be selected according to actual needs. In some embodiments, the output voltage of battery 20 is 48V.

[0027] The range extender 30 is connected to the motor 10 and the battery 20. The range extender 30 can be used to drive the motor 10 to rotate or to charge the battery 20. The range extender 30 can burn fossil fuels (such as gasoline) and convert the energy of the fossil fuels into electrical energy.

[0028] In practical applications, the marine range extender system 100 also includes a controller, which is used to monitor and control various operating parameters of the marine range extender system 100. The controller can be located in the motor 10, the battery 20 (e.g., using the battery management system (BMS) in the battery 20 as the controller), the range extender 30, or independently of the motor 10, battery 20, and range extender 30. This application embodiment does not specifically limit the configuration of the controller. The controller can communicate with the motor 10, battery 20, and range extender 30, for example, via CAN or RS485 bus.

[0029] This application also provides a control method for a marine range extender system, applied to the aforementioned marine range extender system 100. The control method can be executed by the controller of the marine range extender system 100.

[0030] refer to Figure 2 , Figure 2 This is a schematic flowchart illustrating a first embodiment of the control method for a marine range extender system according to this application. The control method includes the following steps: 210. When the battery drives the motor, the motor's required power and the battery's output power are obtained in real time. 220, in response to the demand power being greater than the output power, controls the range extender to start and output energy.

[0031] In practical applications, when battery 20 drives motor 10, the controller can obtain the motor's required power P1 in real time. For example, the controller can communicate with motor 10 in real time via RS485 or CAN bus to obtain the required power P1. Understandably, in practical applications, the required power P1 of motor 10 is affected by various factors such as ship speed, draft, water current speed / direction, and wind speed / direction, and the required power P1 can change in real time. This required power can be set or adjusted by the user.

[0032] The controller also acquires the output power P2 of battery 20 in real time. For example, the controller can acquire the output current and voltage of battery 20 in real time and calculate the output power P2 of battery 20 based on the output current and voltage. In some embodiments, the controller is independent of battery 20. In this case, the controller can also communicate with the BMS (Battery Management System) of battery 20 via a means such as RS485 or CAN bus to acquire the output power P2 of battery 20 from the BMS.

[0033] After obtaining the required power P1 of the motor 10 and the output power P2 of the battery 20, the controller compares the required power P1 with the output power P2 to determine whether the required power P1 is greater than the output power P2. If the required power P1 is greater than the output power P2, it means that the output power of the battery 20 cannot meet the needs of the motor 10. At this time, the controller responds to the requirement that the required power P1 is greater than the output power P2 and controls the range extender 30 to start to output energy.

[0034] After the range extender 30 starts and outputs energy, it can replenish the marine range extender system 100 to meet the needs of the motor 10, ensuring the ship can sail stably. Understandably, in practical applications, after the range extender 30 starts, the output energy can be directly used to drive the motor 10, or it can be used to charge the battery 20, or part of it can be used to drive the motor 10 and part of it can be used to charge the battery 20.

[0035] In the control method of this application embodiment, the required power of the motor and the output power of the battery are acquired in real time. When the required power is greater than the output power, the system can automatically respond and start the range extender to output energy. Compared with the traditional method of manually starting the range extender, this application embodiment can automatically control the range extender to start and output energy, thereby improving the ship's endurance. No manual operation or intervention by the user is required, which can improve the intelligence and ease of use of the system.

[0036] In some embodiments, reference Figure 3 , Figure 3This is a second flowchart illustrating the control method for a marine range extender system according to an embodiment of this application. After step 220, which controls the range extender to start and output energy, the method further includes the following steps: 230, obtain the difference between the required power and the output power; 240. Determine the power supply target of the range extender based on the difference, and control the range extender to supply power to the power supply target, which includes at least one of the motor and battery.

[0037] The controller can calculate the difference ΔP between the required power P1 and the output power P2, i.e., ΔP = P1 - P2. Then, the controller further determines the power supply target of the range extender 30 based on the difference ΔP and controls the range extender 30 to supply power to the target. The power supply target includes at least one of the motor 10 and the battery 20.

[0038] In this embodiment, the controller can determine the power supply target from the motor 10 and the battery 20 according to the actual power situation, thus enabling appropriate power distribution between the motor 10 and the battery 20 and improving the flexibility of power supply.

[0039] In some embodiments, reference Figure 4 , Figure 4 This is a third flowchart illustrating the control method for a marine range extender system according to an embodiment of this application. Step 240, which determines the power supply target of the range extender based on the difference and controls the range extender to supply power to the target, includes the following steps: 241. Determine if the difference is greater than the preset difference; 242. If so, the motor is identified as the power supply object, and the range extender is controlled to supply power to the motor to drive the motor; 243. If not, obtain the battery's state of charge; 244. Determine the power supply target of the range extender based on the state of charge, and control the range extender to supply power to the power supply target.

[0040] Specifically, for the aforementioned power difference ΔP, a preset difference value can be set in advance. The preset difference value P0 is a fixed power value. The magnitude of the preset difference value P0 can be set based on experience, actual needs, or experiments.

[0041] After the controller calculates the difference ΔP between the required power P1 and the output power P2, it compares the difference ΔP with the preset difference P0 to determine whether the difference ΔP is greater than the preset difference P0.

[0042] In some embodiments, if step 241 determines that the difference ΔP is greater than the preset difference P0, it indicates that the power demand P1 of the motor 10 differs significantly from the output power P2 of the battery 20, resulting in a large power demand shortfall for the motor 10. To compensate for this power demand shortfall and ensure normal navigation of the ship, step 242 is executed, designating the motor 10 as the power source and controlling the range extender 30 to supply power to the motor 10 to drive it. By directly supplying power to the motor 10 through the range extender 30, the power demand shortfall of the motor 10 can be quickly compensated, allowing the motor 10 to maintain stable operation.

[0043] In some embodiments, after the controller controls the range extender 30 to supply power to the motor 10 to drive the motor 10, it can also synchronously control the battery 20 to supply power to the motor 10 to drive the motor 10. That is, the controller controls the range extender 30 and the battery 20 to supply power to the motor 10 simultaneously, so that the range extender 30 and the battery 20 together meet the power requirements of the motor 10. This power supply mode can be understood as a rate-increase mode.

[0044] In some embodiments, if step 241 determines no, i.e., the difference ΔP is not greater than the preset difference P0, it indicates that the power demand P1 of the motor 10 and the output power P2 of the battery 20 are relatively close, and the power demand gap of the motor 10 is small. In this case, by executing steps 243 and 244, the controller can further obtain the state of charge (SOC, i.e., the remaining percentage of charge) of the battery 20, determine the power supply target of the range extender 30 based on the SOC, and control the range extender 30 to supply power to the power supply target.

[0045] In some embodiments, reference Figure 5 , Figure 5 This is a schematic diagram illustrating the determination of the power supply target of the range extender based on the state of charge of the battery in an embodiment of this application.

[0046] Specifically, for the state of charge (SOC) of battery 20, a first preset value SOC1 and a second preset value SOC2 can be preset. Both the first preset value SOC1 and the second preset value SOC2 are defined SOC values. Both the first preset value SOC1 and the second preset value SOC2 are between 0% and 100%, and the first preset value SOC1 is less than the second preset value SOC2. For example, in one example, the first preset value SOC1 can be 30%, and the second preset value SOC2 can be 40%.

[0047] In some embodiments, after acquiring the state of charge (SOC) of the battery 20, the controller may compare the SOC with a first preset value SOC1, and determine whether the SOC is less than the first preset value SOC1. If the SOC is less than the first preset value SOC1, that is, SOC < SOC1, for example, SOC is less than 30%, it indicates that the remaining power of the battery 20 is low at this time. In this case, the controller determines the battery 20 as the power supply object, controls the range extender 30 to supply power to the battery 20 for charging, and controls the battery 20 to drive the motor 10. This power supply mode can be understood as a charging mode.

[0048] It can be understood that, when the range extender 30 charges the battery 20 and drives the motor 10 via the battery 20, the range extender 30 can not only supplement electric energy for the battery 20 and increase the SOC of the battery 20, but also substantially meet the power requirement of the motor 10.

[0049] In some embodiments, after acquiring the SOC of the battery 20, the controller may compare the SOC with a first preset value SOC1 and a second preset value SOC2 simultaneously, and determine whether the SOC is greater than or equal to the first preset value SOC1 and less than the second preset value SOC2. If it is determined that the SOC is greater than or equal to the first preset value SOC1 and less than the second preset value SOC2, that is, SOC1 ≤ SOC < SOC2, for example, the SOC is between 30% and 40%, it indicates that the remaining power of the battery 20 is not low at this time. In this case, the controller determines both the motor 10 and the battery 20 as power supply objects, controls the range extender 30 to supply power to the motor 10 to drive the motor 10, and controls the range extender 30 to supply power to the battery 20 for charging. This power supply mode can be understood as a hybrid mode.

[0050] It can be understood that, when the range extender 30 supplies power to the motor 10 and the battery 20 simultaneously, the range extender 30 can not only supplement electric energy for the battery 20 and increase the SOC of the battery 20, but also directly supply power to the motor 10, so as to meet the power requirement of the motor 10 and enable the motor 10 to maintain stable operation.

[0051] In some embodiments, after acquiring the SOC of the battery 20, the controller may compare the SOC with a second preset value SOC2, and determine whether the SOC is greater than the second preset value SOC2. If the SOC is greater than the second preset value SOC2, that is, SOC > SOC2, for example, SOC is greater than 40%, it indicates that the remaining power of the battery 20 is high at this time. In this case, the controller determines the motor 10 as the power supply object, and controls the range extender 30 to supply power to the motor 10 to drive the motor 10.

[0052] Understandably, in this way, the range extender 30 directly supplies power to the motor 10, which can ensure the power requirements of the motor 10 and keep the motor 10 running stably.

[0053] This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor (e.g., the processor can be the controller described above), it implements the control method of the marine range extender system of any of the above embodiments.

[0054] This application also provides a marine range extender system, including the aforementioned motor 10, battery 20, range extender 30, and control unit. The control unit can be, for example, the controller described in the various embodiments above. The motor 10, battery 20, and range extender 30 are all connected to the control unit. The motor 10 is also connected to the battery 20 and range extender 30, and the range extender 30 is also connected to the battery 20. The control unit is used to execute the control method of the marine range extender system according to any of the above embodiments.

[0055] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0056] It should be noted that in the embodiments of this application, "connection" can be understood as electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0057] The control method, storage medium, and marine range extender system provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A control method for a marine range extender system, characterized in that, The marine range extender system includes a motor, a battery connected to the motor, and a range extender, wherein the range extender is also connected to the battery, and the control method includes: When the battery drives the motor, the required power of the motor and the output power of the battery are acquired in real time. In response to the demand power being greater than the output power, the range extender is controlled to start and output energy; Obtain the difference between the required power and the output power; The power supply target of the range extender is determined based on the difference, and the range extender is controlled to supply power to the power supply target, wherein the power supply target includes at least one of the motor and the battery; The step of determining the power supply target of the range extender based on the difference and controlling the range extender to supply power to the power supply target includes: Determine whether the difference is greater than a preset difference; If the difference is greater than the preset difference, the motor is identified as the power supply target, and the range extender is controlled to supply power to the motor to drive the motor.

2. The control method according to claim 1, characterized in that, After controlling the range extender to supply power to the motor to drive the motor, the method further includes: The battery is controlled to supply power to the motor to drive the motor.

3. The control method according to claim 1, characterized in that, The step of determining the power supply target of the range extender based on the difference and controlling the range extender to supply power to the power supply target further includes: If the difference is not greater than the preset difference, then the state of charge of the battery is obtained; The range extender determines the power supply target based on the state of charge and controls the range extender to supply power to the power supply target.

4. The control method according to claim 3, characterized in that, The step of determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is less than a first preset value; If the state of charge is less than a first preset value, the battery is identified as the power source, and the range extender is controlled to supply power to the battery for charging, and the battery is controlled to drive the motor.

5. The control method according to claim 3, characterized in that, The step of determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is greater than or equal to a first preset value and less than a second preset value; If the state of charge is greater than or equal to a first preset value and less than a second preset value, then both the motor and the battery are identified as power supply objects, and the range extender is controlled to supply power to the motor to drive the motor, and the range extender is controlled to supply power to the battery to charge it.

6. The control method according to claim 3, characterized in that, The step of determining the power supply target of the range extender based on the state of charge and controlling the range extender to supply power to the power supply target includes: Determine whether the state of charge is greater than a second preset value; If the state of charge is greater than the second preset value, the motor is identified as the power supply object, and the range extender is controlled to supply power to the motor to drive the motor.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the control method for the marine range extender system according to any one of claims 1 to 6.

8. A marine range extender system, characterized in that, The system includes a control unit and a motor, a battery, and a range extender connected to the control unit. The motor is connected to the battery and the range extender, and the range extender is also connected to the battery. The control unit is used to execute the control method of the marine range extender system according to any one of claims 1 to 6.

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