342 results about "Electric ship" patented technology

The invention relates to the technical field of ship working condition recognition, in particular to a multi-working-condition recognition method, system and device for an all-electric ship and a medium, and the method comprises the steps: obtaining the historical operation data of the all-electric ship, carrying out the feature extraction and noise reduction, and obtaining a noise reduction data set of each sample; preliminarily clustering the noise-reduced propulsion load and the first-order derivative of the propulsion load into a plurality of basic working conditions, and adding a unique basic working condition label for the noise-reduced data set; judging whether the absolute value of the first-order derivative of the propulsion load of each sample after noise reduction is higher than a preset threshold value or not, summarizing noise reduction data groups corresponding to all samples with positive results into a high-fluctuation data set, and summarizing the propulsion load, the first-order derivative of the propulsion load and the basic working condition labels corresponding to other samples into a general data set; and using a kernel principal component analysis algorithm to extract main features of data in the high-fluctuation data set and the general data set, inputting the main features into the pre-trained working condition subdivision model, and outputting a specific working condition category. The working condition identification precision and real-time performance of the all-electric ship can be improved.

The invention provides a dispatching management system and method for an EMS deep fusion electric ship battery, and relates to the technical field of electric energy management, and the method comprises the steps: building a digital twin based on the state information of the electric ship battery, and obtaining a health attenuation coefficient; acquiring an abnormal fluctuation sequence of the temperature, and performing dynamic boundary division on the health attenuation coefficient through the abnormal fluctuation sequence to obtain a dynamic safety boundary; grading and limiting the output power of the battery according to the dynamic safety boundary to obtain a power regulation and control parameter set, and carrying out joint modeling on the power regulation and control parameter set to obtain an out-of-limit penalty term; performing subnet partition reconstruction on the power grid topological structure to obtain an electrical collaboration graph, and performing multi-target optimization scheduling on the electrical collaboration graph through an out-of-limit penalty term to obtain a scheduling strategy vector; according to the method and the device, dynamic electric energy optimal scheduling based on health perception can be realized, so that the stability of electric ship battery scheduling is improved.

According to the electrical ship optimal scheduling strategy optimization method and related equipment provided by the embodiment of the invention, an electrical ship comprises a photovoltaic module, a plurality of generator sets and a battery energy storage system, and the method comprises the steps of obtaining a photovoltaic power function of the photovoltaic module based on operating environment parameters of the electrical ship in a sailing process; based on the generator set parameter of each generator set, the system state parameter of the battery energy storage system and the charging cost and the charging parameter of the electric ship at the port, obtaining an operation cost function; based on the sailing state parameters of the electric ship, the system operation parameters of the battery energy storage system and the photovoltaic power function, sailing scheduling constraints and energy scheduling constraints are obtained; based on the uncertainty of the photovoltaic power function and the charging cost, generating an uncertainty operation cost optimization model according to the operation cost function, the navigation scheduling constraint and the energy scheduling constraint; and the uncertainty operation cost optimization model is solved, an optimization decision is obtained, and the overall economy of the whole voyage of the electric ship is remarkably improved.

The invention belongs to the technical field of electric ships and fault detection. The invention discloses a digital twin electric ship power battery fault detection method based on artificial intelligence. The method is characterized by comprising the following steps: step 1, a data acquisition layer captures a battery operation state and environmental parameters in real time by deploying multiple types of sensors; 2, the digital twinborn layer realizes dynamic mapping of a physical battery system by constructing a high-fidelity virtual model; establishing a multi-physical field coupling model based on electrochemical characteristics, thermodynamic behaviors and structural parameters of the power battery; 3, the fault prediction layer extracts the harmonic component of the voltage curve, the spatial distribution mode of the temperature gradient and other multi-dimensional features through time-frequency analysis, and captures the gradual change trend of the internal resistance of the battery in combination with a sliding window technology; and 4, the application layer converts a prediction result into an operable engineering decision, and constructs a closed-loop operation and maintenance system. According to the method, efficient battery fault detection can be realized.

Embodiments for a battery pack for an electric marine vessel are described herein. In a particular embodiment, a battery pack for an electric marine vessel comprises a waterproof chassis, a high voltage battery comprising a plurality of battery cells disposed within the chassis, positive and negative high voltage connectors disposed on a front flange of the chassis, a manual disconnect connector disposed on the front flange of the chassis, and a signals connector disposed on the front flange of the chassis, the signals connector configured for signal communication with at least a power distribution unit and a vessel control unit. A battery management system disposed within the chassis and coupled to the signals connector comprises a battery management controller, a plurality of relays operable by the battery management controller, and a plurality of sensors electrically coupled to the battery management controller.

The invention relates to the technical field of energy storage system-containing ship power control, in particular to a ship hybrid energy storage system capacity planning method based on multilayer power distribution, which comprises the following steps of: S1, establishing a power generation side operation constraint of an all-electric ship hybrid energy storage system; s2, constructing a ship hybrid energy storage system robust capacity planning model with the goal of minimizing the investment cost of the ship hybrid energy storage system and the operation cost of the ship microgrid; s3, solving the robust capacity planning model of the ship hybrid energy storage system to obtain the optimal capacity of the ship hybrid energy storage system; and S4, taking the optimal capacity as the design capacity of the ship hybrid energy storage system, performing power distribution under the multilayer time scale in combination with the actual propulsion power demand to obtain an optimal power distribution scheme, and realizing power distribution of each component of the ship hybrid energy storage system through the optimal power distribution scheme. According to the invention, the safety and stability of all-electric ship navigation can be ensured.

The invention discloses a harbor district power distribution network fault recovery control method, which comprises the steps of preprocessing operation real-time data of an electric ship, an electric vehicle, an energy storage battery and a power grid and topological data of the power grid by adopting a sliding window adaptive standardization method, and calculating coupling degrees among different power supply areas; extracting fault features in combination with wavelet transform and singular value decomposition; flexible resource characteristics are identified, resource classification is carried out, and the resource schedulability is evaluated; searching a reconstruction path; and generating a reconstruction scheme, and selecting an optimal execution sequence. According to the invention, rapid and accurate recovery of harbor district power distribution network system faults is realized, and system operation reliability is improved.

The utility model relates to an electric type lifting system for a ship, which comprises an electric hoist arranged at the rear end of a modeling structure; the first fixed pulley is arranged on the deck; a second fixed pulley and a third fixed pulley are arranged at the lower end of the mounting plate; performing shaping; the first end of the traction rope is connected with the output end of the electric hoist, the middle sequentially penetrates through the first fixed pulley, the second fixed pulley and the third fixed pulley, and the second end is connected with the size upper end; when the ship electric size lifting system is overlooked, the first fixed pulley and the second fixed pulley are located at the front end of the size and located at the rear ends of the electric hoist and the modeling structure. The ship body mast is used as a main body structure, the electric hoist is used as power, the first fixed pulley on the deck and the second fixed pulley and the third fixed pulley on the mounting plate are used for guiding the traction rope, the traction rope is wound and unwound through the electric hoist, automatic lifting of the corresponding size is achieved, the structure is simple, operation is convenient, and cost is low. And operators are protected from being injured.

The invention discloses a pure electric ship battery equalization control system based on a PID algorithm, and the system comprises a battery state monitoring module which is used for monitoring the state parameter of each single battery in a battery pack; the fuzzy self-adaptive PID controller is used for converting the received state parameters into PID parameter adjustment values through fuzzy control and PID control and outputting control signals; the efficient equalization module is used for evaluating the state of each single battery based on the control signal and the state parameter, and formulating an equalization strategy for battery equalization according to the state evaluation result of the single battery; the energy feedback module is used for converting redundant electric energy generated in the battery equalization process into charging electric energy of other single batteries based on an efficient DC-DC converter technology of a high-frequency transformer; and the control module is used for controlling the battery state monitoring module, the fuzzy self-adaptive PID controller, the efficient equalization module and the energy feedback module. And the battery equalization control precision and the energy recovery efficiency are improved.

The invention discloses a dynamic power management method for an all-electric ship hybrid energy storage system. The method comprises the following steps: S1, establishing a direct-current voltage dynamic model and a ship hybrid energy storage system model based on a ship micro-grid structure of a ship; s2, establishing a multi-working-condition propulsion power model based on the movement mechanism of the ship; s3, establishing a joint SOC-SOP estimation model based on the nonlinear relationship among the state of charge, the battery power characteristics and the ambient temperature; s4, on the basis of the direct-current voltage dynamic model, the ship hybrid energy storage system model and the multi-working-condition propulsion power model, establishing a dynamic power distribution model; and S5, estimating an available power range of the battery through a combined SOC-SOP estimation model, inputting the available power range into the dynamic power distribution model, obtaining a dynamic power distribution strategy, and realizing dynamic power distribution of the ship hybrid energy storage system. According to the method, the dynamic power management of the hybrid energy storage system of the all-electric ship under the uncertain navigation condition is optimized, and the stability and the economical efficiency of a ship power system are improved.

The invention discloses a rear mast lamp holder of a pure electric ship, which comprises four mast steel pipes, the bottoms of which are respectively connected with a fixed guide rail bridge of a box-type battery at the rear part of the ship; a bent part is arranged in the middle of each mast frame steel pipe, so that the top ends of the mast frame steel pipes are intersected and connected to form a mounting platform of the rear mast lamp; the mast frame reinforcing supporting pipes are connected with the adjacent mast frame steel pipes in the horizontal direction so as to enhance the overall strength of the mast frame. According to the arrangement mode of the rear mast lamp holder, an existing structure is effectively utilized, the arrangement space of a tail deck can be saved, the goods damage space is reduced, the weight can be reduced, the construction and material cost is reduced, the stability performance of the rear mast lamp holder is improved, and sailors can conveniently maintain the rear mast lamp holder in the later period.

The invention discloses an electric ship remote intelligent control method and system based on cloud-side cooperation, and relates to the technical field of cloud-side cooperation computing, and the method comprises the steps: carrying out the feature extraction of images around a ship and time-space aligned multi-modal data, obtaining visual features, motion features and environment features, carrying out the feature fusion, and generating an environment situation vector; inputting the environment situation vector into a channel boundary detection model, analyzing the emergency degree of the current situation, generating a collision avoidance instruction, and generating a ship control decision through a three-level collaborative decision; combining a ship control decision with ship control characteristics, simulating a traffic development situation in a navigation area, comparing with historical ship navigation conflict data, and identifying potential conflict data; through collaborative fusion of the ship-end decision-making unit, the shore-end decision-making unit and the cloud-end decision-making unit, an optimal control strategy is generated in combination with respective advantages, intelligent decision-making of global optimization in a complex environment is realized, and adaptability and safety of ship control are enhanced.

The embodiment of the utility model provides a battery box cabinet and a battery changing ship, and relates to the technical field of electric ships. In the battery box cabinet, the first electrode port group of the battery is connected with the first end of the manual maintenance switch, the second end of the manual maintenance switch is connected with the first end of the first electrode circuit unit, and the second end of the first electrode circuit unit is connected with the first electrode external connection port; the second electrode port group of the battery is connected with the first end of the second electrode circuit unit, and the second end of the second electrode circuit unit is connected with the second electrode external port; the first pole circuit unit is provided with a first switch unit; the second pole circuit unit is provided with a second switch unit. The control unit is connected with an energy management system of the ship. The battery box cabinet provided by the embodiment of the utility model is suitable for the electric ship, and the switch unit can be flexibly switched on and switched off in charging and discharging scenes. And the manual maintenance switch can disconnect the battery pack from the internal circuit of the battery cabinet as required so as to ensure safety.

An electric ship seaborne charging docking device comprises a waterproof box, a guide plate is detachably connected to one side of the waterproof box in a sliding mode, a plurality of interfaces are formed in the guide plate, inserting connectors are arranged on the guide plate on the outer sides of the interfaces, and guide holes are formed in the guide plate on the two sides of the interfaces. A directional inserting mechanism is arranged in the waterproof box, the directional inserting mechanism comprises a fixing frame installed on the waterproof box, a sliding rod is arranged on the fixing frame in a sliding mode, and end plates are fixedly arranged at the two ends of the sliding rod respectively; a fixing plate is further arranged between the front sides of the end plates, a fixing block is arranged on the front side of the fixing plate, plugs in one-to-one correspondence with the connectors are installed on the fixing block, guide rods are arranged on the portions, on the two sides of the plugs, of the fixing plate, and guide heads are arranged at the front ends of the guide rods. Butt joint position deviation caused by sea stormy waves can be automatically corrected, accurate centering of a charging interface is ensured, meanwhile, butt joint impact is effectively absorbed, and the stability of equipment in a wave environment is improved.

The invention discloses an electric ship battery health state estimation method based on a multi-target crowd-sourcing algorithm and a deep learning neural network, and the method comprises the steps: generating a battery data set, and reading all data of a battery in the data set; preprocessing the battery data; determining an optimization target: minimizing a root mean square error and a mean absolute error; setting a parameter range of decision variables; the parameter configuration of each particle is used for operating a Transform network model; iteration is carried out through a multi-objective particle swarm optimization (MOPSO) algorithm, and a global optimal solution is updated; the global optimal solution with the lowest RMSE and MAE is used as the optimal parameter configuration of the Transform model; and outputting the battery SOH estimation value. According to the method, the powerful time sequence data processing capability and the long-term dependency relationship capturing capability of the Transformer deep learning neural network are utilized and combined with the MOPSO optimization algorithm, so that the overall neural network model parameters are optimized, the time-related scale dependency relationship of the battery SOH is enhanced, and accurate estimation of the SOH of the pure electric ship power battery is realized.

The invention discloses an electric ship standby battery control strategy based on improved droop control. The electric ship standby battery control strategy comprises the following steps: step 1, constructing a cooperative work model of an electric ship standby battery and a main battery; 2, improving a traditional droop control strategy through a translation droop curve, and achieving power equalization; step 3, based on the improved droop control strategy in the step 2, compensating voltage offset by using a fuzzy algorithm to improve the voltage control precision; and 4, accurately distributing the output current of each direct current bidirectional converter through output current information interaction between the main battery direct current bidirectional converter and the standby battery direct current bidirectional converter. According to the electric ship standby battery control strategy based on improved droop control, the output power of the standby battery can be rapidly and accurately adjusted according to the real-time operation state of the electric ship, and the electric ship standby battery control strategy has the practical application value for maintaining the voltage and frequency stability of a ship electric power system and improving the comprehensive utilization efficiency of energy.

The invention discloses a lithium ion power battery rotation rest balance topology for an electric ship and a control method, and relates to the technical field of management control in a lithium ion battery system for the electric ship. According to the electric ship lithium ion power battery rotation rest balance topology and the control method, a lithium ion power battery topology structure is constructed, an operation group and a candidate group are dynamically configured, a rotation rest priority index is calculated based on operation state time sequence data, batteries to be subjected to rotation rest are accurately judged, substitute batteries are intelligently screened, and safe and controllable topology switching is executed; according to the method, the dynamic configuration of the operation groups and the candidate groups is realized by constructing the battery topological structure mapping table, defining the connection relationship and the scheduling condition and combining the operation fitness score, so that the scientificity of the battery grouping management and the stability of the system operation are improved; the fault risk is effectively reduced; and the service life of the battery system is prolonged.

The invention relates to a battery thermal runaway risk early warning method and device for a pure electric ship. The method comprises the following steps: acquiring a sensor data set detected by various sensors on the pure electric ship; according to the fluctuation intensity of each sensor data in the sensor data set, the weight of each sensor is determined, and the weight is dynamically adjusted through the fluctuation intensity of each sensor, so that weak but key early thermal runaway signals can be identified, and feature fusion is performed on the data of various sensors in the sensor data set according to the weight. Obtaining a comprehensive feature vector after dynamic weight adjustment; the thermal runaway risk identification model can predict the temperature change trend of the battery in the future by analyzing the dynamic trajectory of the parameters in the battery charging and discharging process, so that the comprehensive feature vector is input into the thermal runaway risk identification model for prediction to obtain a battery temperature sequence, and risk early warning is performed on the pure electric ship according to the battery temperature sequence. And the early warning accuracy of the pure electric ship is improved.

The invention provides a container battery of an electric ship and a battery replacing method of the electric ship, and relates to the technical field of electric ships, the container battery comprises a container, the top of the container is open, an inlet and an outlet are formed, the bottom in the container is provided with a plurality of battery bases, and the side face of the container is provided with a charging and discharging interface; the multiple heavy truck battery packs are arranged in the container battery, the multiple heavy truck battery packs are detachably connected with the multiple battery bases correspondingly, and the heavy truck battery packs can enter and exit from the container through the inlet and outlet; the problems that in the prior art, an electric ship adopting a container battery depends on a large crane during battery replacement, and meanwhile an electric ship adopting a heavy truck battery pack is low in battery replacement efficiency are solved.

The invention discloses a ship energy sharing management method based on multi-mode adaptive droop control. The ship energy sharing management method comprises the following steps: acquiring shipborne micro-grid data; connecting a plurality of electric ships in parallel with a direct-current micro-grid, and constructing a direct-current micro-grid cluster by using the obtained shipborne micro-grid data; and performing multi-mode adaptive droop control on the constructed DC micro-grid cluster, and coordinating a power control strategy of the whole DC micro-grid cluster. And establishing a small-signal analysis model for the direct-current micro-grid cluster to judge the stability of the system. According to the ship energy sharing management method, decentralized power sharing of a micro-grid cluster based on a plurality of electric ship parallel DC micro-grids is realized through multi-mode adaptive droop control, and a power control strategy of the whole micro-grid cluster is coordinated, so that the micro-grids can operate independently and can also provide power support mutually.

The disclosed invention relates to an electrically powered watercraft that may include a dynamic weight shifting system for reducing power requirements in operation, an electrical system that provides a first low voltage electrical power mode when stationary and a second high voltage electrical power mode when in motion for increased power and range, and an omnidirectional console for control of the watercraft. The electrical system increases power to the electric motors when the watercraft is in gear, while reducing the power level when the watercraft is not in motion. The omnidirectional control console for operation and control of the watercraft may be responsive to the orientation of the console with respect to the watercraft. This construction allows easy docking and close operation to other watercraft and obstructions.

The invention provides a control method and device of charging equipment for a magnetic suction type ship, a medium and a controller, and aims to solve the problems that when an electric ship or a hybrid power ship is in shore for charging, a charging connecting device is prone to loosening, sealing failure, poor contact and the like due to stormy wave swing, and a magnetic suction fixing device is additionally arranged on the charging connecting device; the charging plug and the charging socket are firmly fixed through magnetic force, the stability and reliability of the charging process are remarkably improved, the charging failure caused by ship swing is effectively avoided, and the safety and efficiency of ship charging are guaranteed.

The invention discloses a power control system of an electric ship. A data acquisition module is used for acquiring the current relative flow velocity of water flow, the current actual ship speed and the current still water ship speed; the speed comparison module is used for comparing the current actual ship speed with a preset ship speed to obtain a comparison result, and determining a target still water ship speed based on the comparison result; the power supply adjustment module is used for determining a target power parameter and a target power supply parameter of a ship motor according to the target still water ship speed, and generating a power supply adjustment instruction to adjust the power supply parameter; the auxiliary adjusting module is used for collecting electric energy generated by the ship motor or conducting power supply compensation on the ship motor according to the power supply adjusting instruction. The operation condition of the ship is collected and compared with the preset ship speed, so that the parameters of the ship motor and the power supply parameters for supplying power to the ship motor are determined, adjustment is carried out according to the parameters, meanwhile, electric energy collection or power supply compensation is carried out based on the adjustment mode, energy waste is reduced, and the output efficiency is guaranteed.

The present invention provides an electric motor and energy management control system for use with at least one rechargeable battery and at least one hydrogen fuel cell in an electric powered marine vessel. The electric motor and energy management control system comprises a processor configured in use to receive: a drive signal from a throttle unit in response to an operator command; a first signal from a first sensor connected to at least one rechargeable battery to provide an indication of battery level status; and a second signal from a second sensor connected to at least one hydrogen fuel cell to provide an indication of hydrogen fuel cell status. The processor is operative to derive an output drive signal from the drive signal level and from the first and second signals. The processor in use transmits the output drive signal to a motor controller. A motor controller is operative to supply a direct current source to at least one electric motor of an electric powered marine vessel. The motor controller is operative to receive the output drive signal from the

The invention discloses an electric ship energy management system based on artificial intelligence, and relates to the technical field of energy management, the battery state is judged by collecting battery data in real time and calculating the health state coefficient, if the state is normal, the electric power is distributed according to the remaining electric quantity and the health state coefficient, and the performance degradation trend is monitored synchronously; if the health is abnormal or continuous accelerated decline is monitored, early warning is triggered, and intelligent management and early risk intervention are achieved. According to the invention, internal resistance and temperature data are fused, and early attenuation of the battery is accurately monitored through a health state quantitative model and a dynamic threshold value; load is intelligently distributed in combination with charge and health states, battery pack working conditions are optimized, and the service life is prolonged; early warning performance accelerated decline by analyzing the change trend of the health state coefficient; and ship-shore real-time closed-loop early warning is constructed, the cooperative maintenance capability is improved, and safe and efficient operation of energy of the electric ship is comprehensively guaranteed.

Embodiments for a battery pack for an electric marine vessel are described herein. In a particular embodiment, a battery pack for an electric marine vessel comprises a waterproof chassis, a high voltage battery comprising a plurality of battery cells disposed within the chassis, positive and negative high voltage connectors disposed on a front flange of the chassis, a manual disconnect connector disposed on the front flange of the chassis, and a signals connector disposed on the front flange of the chassis, the signals connector configured for signal communication with at least a power distribution unit and a vessel control unit. A battery management system disposed within the chassis and coupled to the signals connector comprises a battery management controller, a plurality of relays operable by the battery management controller, and a plurality of sensors electrically coupled to the battery management controller.

The embodiment of the utility model provides a ship cockpit and an electric ship, and relates to the technical field of ship equipment. The electric ship comprises a ship cockpit, the ship cockpit comprises a workbench, the workbench is sequentially divided into a first functional area, a main control area and a second functional area in the width direction of the cockpit, the main control area is provided with a first monitoring screen and a second monitoring screen which are arranged at intervals in the width direction, and the main control area is further provided with an instrument panel. The instrument panel is located on the lower side of the first monitoring screen and the lower side of the second monitoring screen, the first functional area and the second functional area are each provided with a radar interaction unit, at least one of the first functional area and the second functional area is provided with an electronic map display screen, and the electronic map display screen is located on the upper side. A driver can comprehensively use equipment such as the main monitoring screen, the auxiliary monitoring screen, the electronic map display screen and the navigation radar interaction unit to provide omnibearing and high-precision ship information display and monitoring for the driver.

A high-voltage distribution box for an electric ship comprises a box body and a charging and discharging circuit structure, the box body is formed by bending and welding steel, the top end of the box body is provided with an opening, the edge of the opening is provided with a sealing gasket, the sealing gasket is made of foaming silica gel, and the box body is internally provided with an installation fixing piece used for installing a charging and discharging circuit; the charging and discharging circuit structure comprises input interfaces, a Hall sensor, a cathode relay, a first fuse, a relay module, a DC-DC module and output interfaces, a plurality of input interfaces and a plurality of output interfaces are connected with corresponding busbars, a display screen is arranged on the box body, the state of each operation parameter of the battery system and the source of a fault can be fed back in real time, and the safety of the battery system is improved. And the visualization degree is high. According to the utility model, integration of confluence and control is realized, the integration level is high, battery input can be infinitely superposed, a plurality of battery boxes can be connected in parallel for confluence, and single-box multi-control is realized.

To provide a motor control device of an electrically-driven propeller capable of increasing the opportunity or time to perform a motor regenerative operation and suppressing adverse effect on a motor and the like when a ship jumps.SOLUTION: A motor control device 21 is a device to control a motor 8 of an electrically-driven outboard engine 6. The motor control device 21 comprises: a driving control part 25 for performing driving control of the motor 8 and rotating a propeller 7 of the electrically-driven outboard engine 6; a jump determination part 27 for determining whether or not a ship 1 has jumped; and a regenerative control part 26 for performing regenerative control of the motor 8 when the ship 1 jumps based on a determination result by the jump determination part 27.SELECTED DRAWING: Figure 2

The application belongs to the technical field of electric ships, and relates to a pure electric ship automation system and an integration method thereof. The system optimizes the network communication protocol of the whole-ship energy management system and the battery management system at the application layer, realizes the monitoring and display of the big data of the battery management system by the network monitoring system under the condition that the independent host of the network monitoring system is cancelled, and uses the energy management system to act as the host of the network monitoring system, integrates the network monitoring system and the existing energy management system, greatly reduces the hardware and wiring of the network monitoring system, enhances the reliability of the network monitoring system, reduces the cost of the electric ship, and is favorable to the promotion and application of the electric ship.