Device for starting management of marine range extender and control method thereof

Abstract

The invention discloses a device for starting management of a marine range extender and a control method of the device. The device comprises a storage module, an interactive communication module, an output enabling module, a control module and a man-machine interaction display module. According to the control method, by obtaining working parameters after a system is awakened, whether high voltage is applied or not, whether faults exist or not and shutdown duration are judged, and a pre-starting mode or a to-be-started mode is decided to be entered. During pre-starting, the ISG motor is enabled, parameters are limited, the rotating speed, the torque, the fuel pressure and the like are monitored, and starting is completed or faults are prompted. The range extender can be started after long-term shutdown, response speed and reliability are improved, ship dynamic property and battery safety are guaranteed, and user experience is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid power ships, and in particular to a device for starting and managing a marine range extender and a control method thereof. Background Art

[0002] Traditional ships may rely on direct diesel engines, which consume a lot of fuel and produce high emissions. When operating in ports or at low speeds, traditional diesel engines operate inefficiently in idle or overloaded states, resulting in low fuel efficiency. China is also encouraging the use of green energy to reduce emissions and providing policy support such as government subsidies to the shipping industry. Range-extended systems, however, combine batteries and generators to optimize fuel efficiency, reduce emissions, and improve energy efficiency.

[0003] However, their application in new areas of the marine industry is still limited. Furthermore, diesel range extenders are not mature enough in handling and troubleshooting onboard phenomena and emergencies. If a fault does occur, the problem cannot be quickly identified and resolved, significantly reducing operational reliability. For example, if a ship is docked at a port for an extended period, the range extender may not be activated for an extended period. When it is used again, it may experience reduced accuracy and delayed response. This inability to quickly and accurately respond to the power requirements of the vehicle control unit (VCU) can affect the vehicle's power and drivability, leading to battery over-discharge and other issues. In severe cases, this can negatively impact the user experience. Summary of the Invention

[0004] The object of the present invention is to provide a device for starting and managing a marine range extender and a control method thereof, so as to solve the existing problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A control method for start-up management of a marine range extender, the control method comprising: Obtaining operating parameters of the system after waking up; If it is determined that there is high pressure on the system and there is no range extender fault; If it is determined that the pre-start mode is manually entered; or if it is determined that the shutdown time is greater than the calibrated shutdown time threshold; The system enters the pre-start mode according to the working parameters; The system prompts that the range extender motor is starting; Enable the ISG motor, switch to speed control mode, request the speed to be the calibrated lubrication speed, and limit the maximum starting torque value of the motor; Obtaining the output power, speed, and estimated torque of the motor, and calculating the current starting load torque of the motor; If it is determined that the motor rotates smoothly and steadily to the calibrated lubrication speed and the starting load torque meets the calibrated starting torque threshold; The system determines the constant speed state of the motor; If it is determined that the pre-start rotation time is greater than the calibrated pre-start rotation time threshold; If it is determined that the stable load torque at the constant speed of the motor is less than the calibrated constant speed load torque threshold; If it is determined that the fuel injection pressure is greater than the calibrated injection pressure threshold; The system determines that system pre-start is completed.

[0006] Further plans include: Obtaining operating parameters of the system after waking up; If it is determined that the system described has no high voltage or range extender fault; The system prompts that the high voltage is not on or the range extender is in fault state.

[0007] Further plans include: If it is determined that the pre-start mode is not manually entered, and if it is determined that the shutdown time is not greater than the calibrated shutdown time threshold; The system enters the standby mode; Further plans include: If it is determined that the motor does not rotate smoothly and steadily to the calibrated lubrication speed or the starting load torque does not meet the calibrated starting torque threshold; The system prompts a startup failure and exits the pre-start mode; Further plans include: The system prompts a startup failure and exits the pre-start mode; If it is determined that the starting load torque is greater than the calibrated maximum threshold or the actual speed remains unchanged, the system determines that the motor is in a stalled state; If it is determined that the starting load torque is less than the calibrated minimum threshold, the system determines that the motor is in a no-load state; If it is determined that the fluctuation of the starting speed and the load torque is greater than the calibrated maximum fluctuation threshold, the system determines that the rotation is in a bad state; Further plans include: If it is determined that the stable load torque at the constant speed of the motor is greater than the calibrated constant speed load torque threshold; The system prompts poor lubrication and reminds you to pay attention to maintenance and check the engine oil; Further plans include: If it is determined that the fuel injection pressure is less than the calibrated injection pressure threshold; The system prompts fuel abnormality and prompts you to check the fuel system; Further plans include: The downtime of the range extender can be calculated by obtaining the difference between the current year, month and day and the year, month and day when the range extender was last shut down. The preset downtime can be 12 hours, 24 hours, etc. The number of days of the preset downtime can be set according to actual conditions, and can also be personalized through the interactive display screen.

[0008] Further plans include: Storage module: used to record real-time data, fault information and downtime duration when a fault occurs; Interactive communication module: used to obtain and send operating parameter messages of the range extender in real time and display signals for human-computer interaction; Output enable module: used to control the power relay of the motor, the power relay of the engine ECU controller, and light up the fault lamp, etc.; Control module: used to process real-time data in different operating stages and determine the status and fault type during the current startup and constant speed stages of the motor; Fault handling module: used to issue corresponding fault handling or prompt information according to different fault conditions.

[0009] Human-machine interaction display module: displays key system parameters in real time, and customizes the system calibration parameters according to different customer needs, allowing for flexible application under different working conditions and requirements. It can also prompt faults and guide the driver to make correct handling after a fault occurs to prevent it from happening again, while also providing standardized responses to emergencies.

[0010] A further solution includes a control device for starting a marine range extender, the control device comprising: a storage module, a control module, an interactive communication module, an output enable module, a human-computer interaction display module, and a program stored in the memory for implementing the marine range extender startup management control method; The storage module is used to store a program for implementing a control method for starting and managing a marine range extender. The storage medium stores a program for implementing a control method for starting and managing a marine range extender. The program for implementing a method for starting and managing a marine range extender is executed by a processor to implement the steps of the control method for starting and managing a marine range extender. The control module is used to execute a program for implementing the control method for starting management of the marine range extender, so as to implement the steps of the control method for monitoring and troubleshooting the components of the range extender cooling system.

[0011] The present invention has the following beneficial effects: To address range extender startup management issues, the RCU controller will identify and record the corresponding system status. It will also manage ISG motor speed control and load torque information under high voltage to identify any range extender startup issues. This automatically monitors and identifies component operating conditions early, alerting shipboard personnel to any issues. The system's on-screen prompts allow shipboard personnel to promptly identify and address any issues, preventing issues such as range extender startup jitter, power restrictions, and startup failures during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A logic diagram for starting the management state for the range extender.

[0013] Figure 2 This is a flowchart for range extender startup fault diagnosis.

[0014] Figure 3 This is a complete flowchart for range extender startup judgment.

[0015] Figure 4 This is a condition diagram for judging the range extender startup fault. DETAILED DESCRIPTION

[0016] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0017] A specific embodiment of a device for starting and managing a marine range extender and a control method thereof: 1. Specific implementation process of control methods Working parameter acquisition stage: After the system wakes up, it collects working parameters in real time through sensors and communication modules, including but not limited to range extender shutdown duration, current system high-voltage status, range extender fault code, battery SOC value, fuel injection pressure and other data. The data sampling frequency is 10Hz to ensure the real-time nature of the parameters.

[0018] Start condition judgment stage: If the system detects upper high voltage and no range extender fault (fault code is 0), it enters the start mode judgment process; When the user manually triggers the pre-start button through the human-computer interaction display module, it is directly determined to enter the pre-start mode; If not manually triggered, the system automatically calculates the downtime duration (the difference between the current time and the last downtime, accurate to the minute). When the duration exceeds the calibration threshold (such as 24 hours, which can be personalized through the interactive screen), it automatically enters the pre-start mode.

[0019] If the system is not on high voltage (voltage at the high voltage detection point < 300V) or there is a fault code (non-0), the human-computer interaction module will display "not on high voltage" or a specific fault code (such as P0001 for fuel system fault).

[0020] If the pre-start mode is not entered manually and the shutdown time is ≤ the calibration threshold, the system enters the standby mode and only maintains the minimum power consumption monitoring state.

[0021] Pre-start execution phase: After the system enters the pre-start mode, the human-computer interaction screen displays "Range extender motor starting" and the buzzer sounds a prompt sound (lasting 2 seconds).

[0022] The control module sends an enable signal to the ISG motor, switching it to speed control mode. The target speed is set to the calibrated lubrication speed (e.g., 800 rpm), and the maximum starting torque is limited to 200 N m (to prevent mechanical shock).

[0023] The motor controller obtains output power, speed (accuracy ±5 r / min), and estimated torque in real time. The current load is calculated using the formula "Starting load torque = (output power × 9550) / speed - estimated torque" and is updated every 50 ms.

[0024] If the motor speed reaches 800r / min stably and the starting load torque is within the range of 50-150N·m (calibrated threshold), it is judged as a smooth start; otherwise, "Start Failure" is displayed and the pre-start mode is exited.

[0025] Startup fault breakdown judgment: When the starting load torque is greater than 300 N·m or the speed remains unchanged for 5 seconds, it is judged as "motor stall" and an emergency stop is triggered; If the starting load torque is less than 30N·m, it is judged as "motor no-load" and the transmission connection should be checked; If the speed fluctuation is greater than ±50r / min or the torque fluctuation is greater than ±30N·m, it is judged as "poor rotation" and a prompt is given to check the bearing lubrication.

[0026] Constant speed verification stage After the motor enters the constant speed state of 800r / min, the system starts timing. When the pre-start rotation time exceeds the calibrated threshold (such as 3 minutes), the load and fuel pressure verification begins: If the stable load torque is less than 80N·m (calibrated constant speed load threshold), the mechanical resistance is normal; If the fuel injection pressure is greater than 3MPa (calibrated threshold), it indicates that the fuel system is ready.

[0027] When all the above conditions are met, the pre-start is determined to be completed, and the human-computer interaction screen displays "Pre-start successful".

[0028] Exception handling mechanism: If the stable load torque at constant speed is ≥80N·m, "Poor lubrication" will be displayed and a prompt will be given to "Check the oil quantity and viscosity".

[0029] If the fuel injection pressure is ≤3MPa, the display will show “Fuel Abnormality” and prompt “Check the fuel tank oil level and fuel pump”.

[0030] 2. Specific composition and function realization of the device Storage Module It uses a 16GB EEPROM chip to record real-time data (including speed, torque, pressure, etc.), fault codes and downtime when a fault occurs. The data is retained for one year and can be exported via a USB interface.

[0031] Interactive communication module Use CAN bus (500kbps) to communicate with the motor controller and engine ECU to obtain operating parameters; Connect to the human-machine interactive screen via the RS485 interface to realize parameter display and command reception.

[0032] Output enable module It includes a relay group that controls the motor power supply (DC 400V), engine ECU power supply (DC 24V) and fault light (red LED). When a serious fault is detected, the motor power supply is cut off within 10ms.

[0033] Control Module It uses a 32-bit MCU (main frequency 120MHz) with a built-in pre-start control algorithm. It executes logical judgment according to the above process with an operation cycle of ≤10ms to ensure timely response.

[0034] Human-computer interaction display module Equipped with a 7-inch touch screen, it can display real-time parameters (speed, pressure, etc.), fault prompts and setting interfaces, and supports personalized adjustment of calibration parameters (such as shutdown threshold and lubrication speed).

[0035] 3. Program implementation of control equipment The control program stored in the storage module includes an initialization module, a parameter acquisition module, a logic judgment module, and an execution output module. The program occupies ≤2MB of storage space. When the processor executes the program, it calls each module in the order described above, achieving full control of the range extender startup management process. The fault diagnosis module has a diagnostic coverage rate of ≥95%, ensuring rapid problem location.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for starting and managing a marine range extender and a control method thereof, characterized in that: The control method includes: Obtain the working parameters of the system after waking up; if it is determined that the system is high voltage and there is no range extender fault; if it is determined that the pre-start mode is manually entered; or if it is determined that the shutdown time is greater than the calibrated shutdown time threshold; the system enters the pre-start mode according to the working parameters; the system prompts that the range extender motor is starting; enable the ISG motor, switch to the speed control mode, request the speed to be the calibrated lubrication speed, and limit the maximum starting torque value of the motor; obtain the motor output power, speed and estimated torque, and calculate the starting load torque of the current motor; if it is determined that the motor rotates smoothly and steadily to the calibrated lubrication speed and the starting load torque meets the calibrated starting torque threshold; the system determines that the motor is in a constant speed state; if it is determined that the pre-start rotation time is greater than the calibrated pre-start rotation time threshold; if it is determined that the stable load torque under the constant speed of the motor is less than the calibrated constant speed load torque threshold; if it is determined that the fuel injection pressure is greater than the calibrated injection pressure threshold; the system determines that the system pre-start is completed.

2. A control method for startup management of a marine range extender according to claim 1, characterized in that: Also includes: Obtain the operating parameters of the system after waking up; if it is determined that the system has no high voltage or range extender fault; the system prompts that the high voltage is not on or the range extender is faulty.

3. A control method for startup management of a marine range extender according to claim 2, characterized in that: Also includes: If it is determined that the pre-start mode is not manually entered, and if it is determined that the shutdown time is not greater than the calibrated shutdown time threshold, the system enters the standby start mode.

4. A control method for startup management of a marine range extender according to claim 1, characterized in that: Also includes: If it is determined that the motor does not rotate smoothly and steadily to the calibrated lubrication speed or the starting load torque does not meet the calibrated starting torque threshold; The system prompts a startup failure and exits pre-boot mode.

5. A control method for startup management of a marine range extender according to claim 4, characterized in that: Also includes: The system prompts a startup failure and exits the pre-start mode; if it is determined that the startup load torque is greater than the calibrated maximum threshold or the actual speed remains unchanged, the system determines that the motor is in a stalled state; If it is determined that the starting load torque is less than the calibrated minimum threshold, the system determines that the motor is in a no-load state; if it is determined that the starting speed and load torque fluctuations are greater than the calibrated maximum fluctuation threshold, the system determines that the motor is in a poor rotation state.

6. A control method for startup management of a marine range extender according to claim 1, characterized in that: Also includes: If it is determined that the stable load torque at the constant speed of the motor is greater than the calibrated constant speed load torque threshold; The system prompts poor lubrication and reminds you to pay attention to maintenance and check the engine oil.

7. A control method for startup management of a marine range extender according to claim 1, characterized in that: Also includes: If it is determined that the fuel injection pressure is lower than the calibrated injection pressure threshold, the system prompts that the fuel is abnormal and prompts you to check the fuel system.

8. A control method for startup management of a marine range extender according to claim 1, characterized in that: Also includes: The downtime of the range extender is calculated by obtaining the difference between the current year, month and day and the year, month and day when the range extender was last shut down. The preset downtime is 12 hours and 24 hours. The number of days of the preset downtime is set according to actual conditions and can also be personalized through the interactive display screen.

9. An online safety monitoring and protection device for a range extender for implementing the control method according to any one of claims 1 to 8, characterized in that: include: Storage module: used to record real-time data, fault information and downtime duration when a fault occurs; Interactive communication module: used to obtain and send operating parameter messages of the range extender in real time and display signals for human-computer interaction; Output enable module: used to control the power relay of the motor, the power relay of the engine ECU controller, and light up the fault lamp, etc.; Control module: used to process real-time data in different operating stages and determine the status and fault type during the current startup and constant speed stages of the motor; Human-machine interaction display module: displays key system parameters in real time, and customizes the system calibration parameters according to different customer needs, allowing for flexible application under different working conditions and requirements. It can also prompt faults and guide the driver to make correct handling after a fault occurs to prevent it from happening again, while also providing standardized responses to emergencies.

10. The device for starting and managing a marine range extender according to claim 9, characterized in that: It also includes a control device for starting a marine range extender, the control device comprising: a storage module, a control module, an interactive communication module, an output enable module, a human-computer interaction display module, and a program stored on the memory for implementing the marine range extender startup management control method; the storage module is used to store the program for implementing the marine range extender startup management control method, the storage medium stores the program for implementing the marine range extender startup management control method, the program is executed by the processor to implement the steps of the marine range extender startup management control method as claimed in any one of claims 1 to 8; the control module is used to execute the program for implementing the marine range extender startup management control method to implement the steps of the range extender cooling system component monitoring and troubleshooting control method as claimed in any one of claims 1 to 8.

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