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CN-122009457-A - Marine parallel hybrid planetary gear driving device and control method

CN122009457ACN 122009457 ACN122009457 ACN 122009457ACN-122009457-A

Abstract

The invention belongs to the technical field of ship propulsion, and particularly relates to a marine parallel hybrid planetary gear driving device and a control method. The planetary gear assembly adopts an integrally formed internal and external gear ring, the internal gear ring is meshed with the planetary gear, the external gear ring is meshed with the external gear, and the external gear is connected with the permanent magnet motor. Through the cooperative control of the electromagnetic clutch and the three electromagnetic brakes, seven working modes of pure diesel engine driving, pure electric driving, hybrid driving, ship driving power generation, ship stopping power generation, blade power generation and electric driving reversing are realized. The invention has compact structure, simple control logic and high transmission efficiency, can realize large reduction ratio by adopting a high-speed motor, is suitable for the working condition of low speed and high torque of ships, and effectively improves the energy utilization efficiency and navigation flexibility.

Inventors

  • MA CHENBEI
  • LIN ZHIMIN
  • JIN QING

Assignees

  • 无锡伏尔康科技有限公司

Dates

Publication Date
20260512
Application Date
20260112

Claims (10)

  1. 1. A marine parallel hybrid planetary gear drive, the drive comprising: the first power assembly is composed of at least one diesel engine and is used as a first power source for ship propulsion; The second power assembly is composed of at least one motor and one battery and is used as a second power source for ship propulsion; The planetary system assembly is simultaneously connected with the first power assembly and the second power assembly through transmission shafts so as to rotate through the first power assembly and the second power assembly, and comprises a sun gear, a planet wheel, a planet carrier, an inner tooth gear ring, an outer tooth gear ring and an outer tooth gear; The propeller is connected with the planetary system component through a transmission shaft and rotates along with the planetary system component.
  2. 2. The marine parallel hybrid planetary gear driving device according to claim 1, wherein the sun gear is located at the center of the planet carrier, the sun gear and the planet carrier are concentrically arranged, the inner gear ring and the outer gear ring are formed by an inner gear ring and an outer gear ring, the inner gear ring of the inner gear ring and the outer gear ring are meshed with the planetary gear, the outer gear ring of the inner gear ring and the outer gear ring are meshed with the outer gear ring, and the planetary gear is at least provided with three planetary gears and meshed between the sun gear and the inner gear ring of the inner gear ring and the outer gear ring in a circumferential equidistant array mode.
  3. 3. The marine parallel hybrid planetary gear drive of claim 1, wherein the inner and outer toothed ring gears are integrally formed members.
  4. 4. The marine parallel hybrid planetary gear driving device according to claim 1, wherein the sun gear is connected with the diesel engine through an electromagnetic clutch, the planet carrier is connected with the propeller through a connecting rotating shaft, and the external gear is connected with the magneto through a transmission shaft.
  5. 5. The marine parallel hybrid planetary gear driving device according to claim 4, wherein the first electromagnetic brake is arranged on a transmission shaft of the sun gear, the second electromagnetic brake is connected to the side wall of the inner and outer gear rings, and the third electromagnetic brake is arranged on a connection rotating shaft of the planet carrier and the propeller.
  6. 6. The marine parallel hybrid planetary gear driving device according to claim 5, further comprising a central controller, wherein the permanent magnet motor, the electromagnetic clutch, the electromagnetic brake I, the electromagnetic brake II and the electromagnetic brake III are all electrically connected with the central controller.
  7. 7. The marine parallel hybrid planetary gear driving device according to claim 1, wherein the inner gear ring and the outer gear ring of the inner gear ring and the outer gear ring are coaxially arranged, and a two-stage speed reduction structure is formed between the outer gear ring and the outer gear ring, and between the inner gear ring and the planet carrier.
  8. 8. The marine parallel hybrid planetary gear driving device according to claim 6, wherein the central controller controls engagement and disengagement of each clutch and brake according to the diesel engine rotation speed, the motor rotation speed, the propeller load and the battery state signal, so as to realize switching of a plurality of working modes.
  9. 9. The marine parallel hybrid planetary gear drive of claim 8, wherein the operating mode comprises: a diesel-only engine driving mode in which the electromagnetic clutch is engaged, the electromagnetic brake II is engaged, the electromagnetic brake I and the electromagnetic brake III are disconnected, and the diesel engine drives the propeller to rotate through the planetary system component; A pure motor driving mode, wherein the electromagnetic clutch is disconnected, the electromagnetic brake I is connected, the electromagnetic brake II and the electromagnetic brake III are disconnected, and the permanent magnet motor drives the propeller to rotate through the planetary system component; A hybrid drive mode in which the electromagnetic clutch is engaged, the electromagnetic brake one, the electromagnetic brake two and the electromagnetic brake three are all disconnected, and the diesel engine and the motor simultaneously work and drive the propeller to rotate through the planetary system component; The ship power generation driving mode comprises the steps that an electromagnetic clutch is connected, an electromagnetic brake I, an electromagnetic brake II and an electromagnetic brake III are disconnected, a permanent magnet motor works in a power generation state, the load torque is regulated by accurately controlling the output current of the permanent magnet motor, a diesel engine stably operates at the optimal efficiency rotating speed, part of the output power is used for driving a propeller, the redundant power drives an inner gear ring to rotate, the permanent magnet motor is driven to generate power, and the generated electric energy is stored in a battery; the ship stopping power generation mode comprises the steps that an electromagnetic clutch is connected, an electromagnetic brake III is connected, the electromagnetic brake I and the electromagnetic brake II are disconnected, and a diesel engine drives a permanent magnet motor to rotate through a planetary system component to generate power; the blade power generation mode is that an electromagnetic clutch is disconnected, an electromagnetic brake I is connected, an electromagnetic brake III and an electromagnetic brake II are disconnected, and a propeller is driven to rotate only by water flow and drives a permanent magnet motor to rotate through a planetary system component to generate power; and in the electric drive reversing mode, the electromagnetic clutch is disconnected, the electromagnetic brake I is engaged, the electromagnetic brake III and the electromagnetic brake II are disconnected, and the permanent magnet motor reversely rotates to drive the propeller to rotate through the planetary system component.
  10. 10. The control method of the marine parallel hybrid planetary gear driving device is characterized by comprising the following steps of: The method comprises the steps that firstly, a central controller collects signals of a diesel engine rotating speed sensor, signals of a permanent magnet motor rotating speed sensor, signals of a propeller load sensor and battery state signals of a battery management system in real time; step two, the central controller determines a target working mode which is required to be switched according to the acquired sensor signals and a preset mode switching threshold condition, wherein the preset mode switching threshold condition comprises the following steps: Selecting a diesel-only drive mode when the battery level is below a first threshold and the watercraft is in a high power cruise state; when the battery power is higher than a second threshold value and the sailing speed is lower than a set value, selecting a pure electric motor driving mode; when the ship needs to accelerate rapidly or suddenly increase the load, selecting a hybrid driving mode; when the load of the propeller is continuously lower than the load of the best efficiency point of the diesel engine and the electric quantity of the battery is lower than a third threshold value, selecting a ship-driving power generation mode; when the ship is berthed and no shore power is available and the battery power is lower than a fourth threshold, selecting a ship stopping power generation mode; when the ship is in a decelerating sliding or sailing ship wind sailing state and the battery power is lower than a fifth threshold value, selecting a blade power generation mode; when a reversing instruction is received and the ship speed is lower than the safe reversing speed, selecting an electric driving reversing mode; Step three, the central controller outputs control instructions to the electromagnetic clutch, the electromagnetic brake I, the electromagnetic brake II and the electromagnetic brake III according to a determined target working mode and preset control logic to realize working mode switching; and fourthly, in the mode switching process, the central controller monitors the state of each actuator and the running parameters of each power source in real time, and if abnormality is detected, the central controller automatically switches to a standby mode and sends out an alarm signal.

Description

Marine parallel hybrid planetary gear driving device and control method Technical Field The invention belongs to the technical field of ship propulsion, and particularly relates to a marine parallel hybrid planetary gear driving device and a control method. Background The ship propulsion is a fundamental power source for ship navigation, and the core function of the ship propulsion is to convert energy generated by an engine into effective thrust so as to overcome water resistance and drive the ship to advance at a controllable speed and direction. The ship is not only a foundation stone for ship mobility, determines navigational speed, endurance and maneuvering flexibility, but also is a precondition for realizing all functions of transportation, operation, exploration or military and the like. Without propulsion, the ship loses meaning as a water vehicle and can only flow along with waves. Therefore, the high-efficiency and reliable propulsion system is directly related to navigation safety, operation economy and environmental protection, and is a key point of the development of the modern shipping industry and shipbuilding technology. Conventional mechanical propulsion systems typically employ diesel, gas or steam turbines, etc. as power sources, which are inefficient at part load operation, resulting in wasted energy. The pure electric driving mode is limited by the current battery technology and charging equipment, the marine charging area is less, the charging time is long, and the requirements on cruising and stability are still larger short plates at present in the face of more complex and changeable marine environments. The traditional fixed-axis gear hybrid propulsion has high requirements on the synchronous rotation speed of a diesel engine and a motor, large control difficulty and inflexible mode switching. The traditional marine driving motors are low-speed high-voltage high-torque motors, most marine propellers belong to extremely low rotation speed relative to the motors due to the economic requirement of the propellers, the low rotation speed high-voltage high-torque motors are relatively large in size, heavy in weight and high in price, a high-voltage platform is needed, and the electric control configuration requirement is high. The traditional planetary gear mixing system, in particular to a mixing system in the field of automobiles, has complex structure and control, complicated reliability, electric control, complex transmission path, high efficiency loss, pursuing the driving smoothness in the process of frequent speed change, is only suitable for the working condition of automobiles, but cannot be directly suitable for the marine use scenes such as low speed, high torque and high reliability of ships, long-time stability of ship speed, large change of propeller load and the like. Disclosure of Invention The invention aims to: the invention aims to overcome the defects of the prior art, provides a driving device and a control method for a marine parallel hybrid planetary gear, the device has simple control logic, high reliability, high transmission efficiency and flexible propulsion mode conversion, and is particularly optimized for ship application scenes. The technical scheme is that the marine parallel hybrid planetary gear driving device comprises: the first power assembly is composed of at least one diesel engine and is used as a first power source for ship propulsion; The second power assembly is composed of at least one motor and one battery and is used as a second power source for ship propulsion; the planetary system assembly is simultaneously connected with the first power assembly and the second power assembly through transmission shafts so as to rotate through the first power assembly and the second power assembly, and comprises a sun gear, a planet carrier, an inner gear ring gear, an outer gear ring and an outer gear; The propeller is connected with the planetary system component through a transmission shaft and rotates along with the planetary system component. In a further embodiment, the sun gear is located at the center of the planet carrier, the sun gear and the planet carrier are concentrically arranged, the inner gear ring and the outer gear ring are formed by an inner gear ring and an outer gear ring, the inner gear ring of the inner gear ring and the outer gear ring are meshed with the planet gears, the outer gear ring of the inner gear ring and the outer gear ring are meshed with the outer gear, and the planet gears are at least provided with three and meshed between the sun gear and the inner gear ring of the inner gear ring and the outer gear ring in a circumferential equidistant array mode. In a further embodiment, the inner and outer toothed ring gears are integrally formed members. In a further embodiment, the sun gear is connected with the diesel engine through an electromagnetic clutch, the planet carrier is connected with the propeller through a connecti