Cooling and energy supply integrated system for motor and control method

Abstract

The invention discloses a cooling and energy supply integrated system for a motor and a control method, and relates to the technical field of liquid hydrogen cooling and hydrogen energy supply, the system comprises a liquid hydrogen storage tank, a cooling circulation system, a gasifier, a fuel cell system and an intelligent control unit; the intelligent control unit determines predicted values of the liquid hydrogen demand quantity of the cooling circulation system and the fuel cell system at the next moment based on the monitoring data at the current moment and the previous moment, and adjusts the flow of liquid hydrogen flowing into the cooling circulation system and the liquid hydrogen storage tank at the next moment and flowing into the gasifier based on the predicted values; the cooling circulation system performs heat exchange on the inflowing liquid hydrogen and the superconducting motor to cool the superconducting motor; the vaporizer vaporizes the liquid hydrogen flowing into the vaporizer from the liquid hydrogen storage tank and the liquid hydrogen subjected to heat exchange, and introduces the liquid hydrogen and the liquid hydrogen into the fuel cell system; the fuel cell system uses hydrogen as fuel to generate electricity. The comprehensive utilization efficiency of liquid hydrogen resources is improved, and the lightweight design requirement of the system is met.

Description

Technical Field

[0001] The present application relates to the technical field of liquid hydrogen cooling and hydrogen energy supply, and in particular to an integrated cooling and energy supply system and control method for a motor. Background Art

[0002] With the rapid development of new energy aerospace platforms (such as drones and hypersonic vehicles) and superconducting motor technology, superconducting motors, owing to their zero resistance loss, high power density, and high efficiency, have become key equipment in aerospace, electric propulsion, and other fields. However, the heat management challenges associated with high power density are becoming increasingly prominent: superconducting motors generate significant amounts of heat during operation. Failure to dissipate this heat effectively and promptly can severely impact their performance, efficiency, and stability.

[0003] Conventional cooling methods for superconducting motors primarily include liquid nitrogen and liquid helium. However, these methods suffer from limited functionality, low energy efficiency, high costs, and difficulty meeting lightweight design requirements. Space platforms are limited, and equipment weight requirements are stringent. Traditional cooling methods are inefficient and bulky, making them difficult to meet the platform's lightweight design requirements. Therefore, superconducting motors urgently need an efficient and lightweight cooling method to ensure stable operation in extreme environments while meeting the lightweight requirements of aerospace platforms.

[0004] Therefore, it is necessary to provide an integrated cooling and energy supply system for a motor to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide an integrated cooling and energy supply system and control method for a motor, which improves the comprehensive utilization efficiency of liquid hydrogen resources while meeting the lightweight design requirements of the system.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides an integrated cooling and energy supply system for a motor, the system comprising: a liquid hydrogen storage tank, a cooling circulation system, a vaporizer, a fuel cell system, and an intelligent control unit;

[0008] The superconducting motor is respectively connected with the cooling circulation system, the fuel cell system and the intelligent control unit;

[0009] The intelligent control unit is used for:

[0010] Acquire monitoring data in real time; monitoring data includes: superconducting motor power, superconducting motor power loss, liquid hydrogen temperature after heat exchange in the cooling circulation system, fuel cell system power, and fuel cell system liquid hydrogen demand measurement value;

[0011] Determining a predicted value of the liquid hydrogen demand of the cooling cycle system at a next moment and a predicted value of the liquid hydrogen demand of the fuel cell system at a next moment based on the monitoring data at a current moment and the monitoring data at a previous moment;

[0012] Adjusting the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the cooling circulation system and the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the vaporizer at the next moment based on the predicted value of the liquid hydrogen demand of the cooling circulation system and the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment;

[0013] The liquid hydrogen storage tank is used to store liquid hydrogen with a temperature lower than a preset threshold;

[0014] The cooling circulation system is used to perform heat exchange between the liquid hydrogen flowing into the cooling circulation system and the superconducting motor to cool the superconducting motor, and to introduce the liquid hydrogen after heat exchange into the vaporizer;

[0015] The vaporizer is used to vaporize the liquid hydrogen flowing into the vaporizer from the liquid hydrogen storage tank and the liquid hydrogen after heat exchange to obtain hydrogen gas, and introduce the hydrogen gas into the fuel cell system to provide energy for the fuel cell system;

[0016] The fuel cell system is configured to generate electricity using the introduced hydrogen as fuel and transmit the generated current to the superconducting motor.

[0017] In one embodiment, determining a predicted value of liquid hydrogen demand of the cooling cycle system at the next moment based on monitoring data at the current moment and monitoring data at the previous moment specifically includes:

[0018] determining the power loss of the superconducting motor at a next moment based on the power loss of the superconducting motor at a previous moment and the power loss of the superconducting motor at a current moment;

[0019] Determine the liquid hydrogen flow rate of the superconducting motor at the next moment based on the power loss of the superconducting motor at the next moment and the temperature of the liquid hydrogen after heat exchange in the cooling circulation system at the current moment;

[0020] Based on the liquid hydrogen flow rate of the superconducting motor at the next moment, a predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment is determined.

[0021] In one embodiment, the calculation formula for the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment is:

[0022] Q 冷需 (t+1)=m LH2,cooling (t+1)·Δt;

[0023]

[0024] P′loss (t+1)=P loss (t)+ΔP loss ;

[0025] Among them, Q 冷需 (t+1) is the predicted value of liquid hydrogen demand of the cooling cycle system at the next moment; m LH2,cooling (t+1) is the liquid hydrogen flow rate of the superconducting motor at the next moment; Δt is the duration; P′ loss (t+1) is the predicted value of the power loss of the superconducting motor at the next moment; T cooling The temperature required to cool the superconducting motor; T inlet (t) is the temperature of liquid hydrogen after heat exchange in the cooling circulation system at the current moment; C LH2 is the specific heat capacity of liquid hydrogen; P loss (t) is the power loss of the superconducting motor at the current moment; ΔP loss is the change in power loss of the superconducting motor from the previous moment to the current moment.

[0026] In one embodiment, determining a predicted value of liquid hydrogen demand of the fuel cell system at the next moment based on monitoring data at the current moment and monitoring data at the previous moment specifically includes:

[0027] determining an increment in liquid hydrogen demand of the fuel cell system from the previous moment to the current moment based on the current power of the fuel cell system and the power of the fuel cell system at the previous moment;

[0028] The predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is determined based on the liquid hydrogen demand increment of the fuel cell system from the previous moment to the current moment and the liquid hydrogen demand measurement value of the fuel cell at the current moment.

[0029] In one embodiment, the calculation formula for the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is:

[0030]

[0031] Q 燃需 (t+1)=Q 燃需 (t)+ΔQ 燃需(t-1,t) ;

[0032] Where ΔQ 燃需(t-1,t) is the incremental demand for liquid hydrogen of the fuel cell system from the previous moment to the current moment; P t is the power of the fuel cell system at the current moment; P t-1 is the power of the fuel cell system at the last moment; η is the efficiency of the fuel cell; LHV H2 is the lower calorific value of liquid hydrogen; Q 燃需(t+1) is the liquid hydrogen demand of the fuel cell at the next moment; Q 燃需 (t) is the measured value of the liquid hydrogen demand of the fuel cell at the current moment.

[0033] In one embodiment, the cooling circulation system includes: a cooling device and a heat exchanger;

[0034] One end of the cooling device is connected to the liquid hydrogen storage tank, the other end of the cooling device is connected to the first end of the heat exchanger, the second end of the heat exchanger is connected to the first end of the superconducting motor, the third end of the heat exchanger is connected to the second end of the superconducting motor, and the fourth end of the heat exchanger is connected to the first end of the vaporizer;

[0035] The cooling device is used to introduce a portion of the liquid hydrogen stored in the liquid hydrogen storage tank into the heat exchanger;

[0036] The heat exchanger is used to perform heat exchange between the introduced liquid hydrogen and the superconducting motor to obtain liquid hydrogen after heat exchange.

[0037] In one embodiment, the fuel cell system includes: a hydrogen storage unit, a fuel cell stack, and a power conversion unit;

[0038] The hydrogen storage unit is used to store the imported hydrogen;

[0039] The fuel cell stack is used to generate direct current by utilizing hydrogen to generate an electrochemical reaction;

[0040] The power conversion unit is configured to convert the direct current into alternating current, and transmit the direct current and the alternating current together as a generated current to the superconducting motor.

[0041] In one embodiment, the liquid hydrogen storage tank is connected to the cooling circulation system and the vaporizer through pipelines, and the heat exchanger is connected to the cooling circulation system, the superconducting motor and the vaporizer through pipelines.

[0042] In one embodiment, the integrated cooling and energy supply system for the motor further includes: a first flow regulating valve, a second flow regulating valve, and a third flow regulating valve;

[0043] The first flow regulating valve is arranged on the pipeline at the outlet of the liquid hydrogen storage tank, the second flow regulating valve is arranged on the pipeline at the inlet of the vaporizer, and the third flow regulating valve is arranged on the pipeline at the inlet of the cooling circulation device.

[0044] In a second aspect, the present application further provides a control method for an integrated cooling and energy supply system for a motor. The control method for the integrated cooling and energy supply system for a motor is implemented based on the integrated cooling and energy supply system for a motor. The control method for the integrated cooling and energy supply system for a motor includes:

[0045] Acquire monitoring data in real time; monitoring data includes: superconducting motor power, superconducting motor power loss, liquid hydrogen temperature after heat exchange in the cooling circulation system, fuel cell system power, and fuel cell system liquid hydrogen demand measurement value;

[0046] Determining a predicted value of the liquid hydrogen demand of the cooling cycle system at a next moment and a predicted value of the liquid hydrogen demand of the fuel cell system at a next moment based on the monitoring data at a current moment and the monitoring data at a previous moment;

[0047] Based on the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment and the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment, the liquid hydrogen flow rate flowing into the cooling circulation system from the liquid hydrogen storage tank and the liquid hydrogen flow rate flowing into the vaporizer from the liquid hydrogen storage tank at the next moment are adjusted.

[0048] According to the specific embodiments provided in this application, this application has the following technical effects:

[0049] The present application discloses an integrated cooling and energy supply system and control method for a motor. Liquid hydrogen stored in a liquid hydrogen storage tank not only provides coolant for cooling a superconducting motor, but also provides fuel for a fuel cell system. After cooling the superconducting motor, the liquid hydrogen absorbs waste heat through a heat exchanger and then enters a vaporizer to be converted into hydrogen for energy supply, forming a "cooling-gasification-energy supply" closed loop, thereby reducing energy waste. In addition, the intelligent control unit can predict the amount of liquid hydrogen required for energy supply to the fuel cell system and cooling of the superconducting motor at the next moment, ensuring an efficient balance between cooling and energy supply, meeting the dual needs of superconducting motor cooling and energy supply, and optimizing the utilization efficiency of liquid hydrogen resources. At the same time, through the integrated cooling and energy supply integrated system, the independent coolant circulation loop and fuel supply pipeline in the traditional cooling system are eliminated, the number of components such as pipes, pumps and valves is reduced, and a lightweight design of the system is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1A schematic diagram of a module of an integrated cooling and energy supply system for a motor provided in one embodiment of the present application;

[0052] Figure 2 A flow chart of a control method for an integrated motor cooling and energy supply system according to an embodiment of the present application.

[0053] Reference numerals:

[0054] Liquid hydrogen storage tank 1, vaporizer 2, fuel cell system 3, superconducting motor 4, cooling device 5, heat exchanger 6, first flow regulating valve 7, second flow regulating valve 8, and third flow regulating valve 9. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0057] In an exemplary embodiment, Figure 1 As shown, an integrated cooling and energy supply system for a motor is provided, comprising: a liquid hydrogen storage tank 1, a cooling circulation system, a vaporizer 2, a fuel cell system 3 and an intelligent control unit (not shown in the figure).

[0058] The liquid hydrogen storage tank 1 is connected to the cooling circulation system and the vaporizer 2 respectively, the cooling circulation system is connected to the superconducting motor 4 and the vaporizer 2 respectively, the vaporizer 2 is connected to the fuel cell system 3, the fuel cell system 3 is connected to the superconducting motor 4, and the intelligent control unit is connected to the superconducting motor 4, the liquid hydrogen storage tank 1 and the fuel cell system 3. Among them, the vaporizer 2 is connected to the cooling duct of the superconducting motor 4. Among them, the motor described in this application includes an ordinary motor and a superconducting motor. This application takes the superconducting motor 4 (the superconducting motor is a motor made using the zero resistance characteristics of superconducting materials, and the operation of the superconducting motor requires a low temperature environment to maintain a superconducting state) as an example, and other forms of motors also fall within the scope of protection of this application.

[0059] Intelligent control unit for:

[0060] Acquire monitoring data in real time. The monitoring data includes: superconducting motor power, superconducting motor power loss, liquid hydrogen temperature after heat exchange in the cooling circulation system, fuel cell system power, and fuel cell system liquid hydrogen demand measurement values.

[0061] Based on the monitoring data at the current moment and the monitoring data at the previous moment, the predicted value of the liquid hydrogen demand of the cooling cycle system at the next moment and the predicted value of the liquid hydrogen demand of the fuel cell system 3 at the next moment are determined.

[0062] Based on the predicted liquid hydrogen demand of the cooling cycle system and the predicted liquid hydrogen demand of the fuel cell system 3 at the next moment, the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank 1 into the cooling cycle system and the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank 1 into the vaporizer 2 at the next moment are adjusted to achieve a dynamic balance between cooling and energy supply. The intelligent control unit dynamically calculates the cooling and energy requirements of the liquid hydrogen through real-time data analysis, accurately adjusts the liquid hydrogen flow rate, and dynamically adjusts the cooling and energy supply ratio of the liquid hydrogen, ensuring that cooling requirements are prioritized under high heat load conditions and that more liquid hydrogen is used for energy supply under low heat load conditions.

[0063] Preferably, the intelligent control unit is further configured to monitor the temperature of the superconducting motor 4 to ensure that the temperature of the superconducting motor 4 is lower than a corresponding preset threshold.

[0064] Liquid hydrogen storage tank 1 is used to store liquid hydrogen at a temperature below a preset threshold. Its excellent thermal insulation ensures that the liquid hydrogen remains cool during storage. Liquid hydrogen, serving as both a coolant and a fuel source, possesses both low temperature and high energy density. At low temperatures, it can efficiently cool the superconducting motor 4 and, after vaporization, provide hydrogen for the fuel cell to generate electricity.

[0065] The cooling circulation system is used to perform heat exchange between the liquid hydrogen flowing into the cooling circulation system and the superconducting motor 4 to cool the superconducting motor 4 , and to introduce the liquid hydrogen after the heat exchange into the vaporizer 2 .

[0066] Specifically, liquid hydrogen is used as a coolant to efficiently cool the superconducting motor 4 through the cooling circulation system, and the heat of the superconducting motor 4 is transferred to the liquid hydrogen through the cooling circulation system. The liquid hydrogen after heat exchange continues to maintain a low temperature state, and only enters the vaporizer 2 to be converted into hydrogen to supply energy to the fuel cell system 3 after the cooling demand is met, ensuring the balance between cooling and energy supply, and optimizing the utilization of liquid hydrogen resources, ensuring the stable operation of the superconducting motor 4 in extreme environments, improving the energy management efficiency and reliability of the aerospace platform, and realizing a lightweight design.

[0067] The vaporizer 2 is used to vaporize the liquid hydrogen flowing into the vaporizer 2 from the liquid hydrogen storage tank 1 and the liquid hydrogen after heat exchange to obtain hydrogen, and introduce the hydrogen into the fuel cell system 3 to provide energy for the fuel cell system 3.

[0068] Specifically, the vaporizer 2 has high gasification efficiency and can automatically adjust the gasification rate according to the cooling demand and energy supply demand, ensuring that the liquid hydrogen is gasified at the right time and providing energy for the fuel cell, avoiding premature gasification affecting the cooling effect.

[0069] The fuel cell system 3 generates electricity using the introduced hydrogen gas as fuel and transmits the generated current to the superconducting motor 4 .

[0070] As an optional implementation, based on the monitoring data at the current moment and the monitoring data at the previous moment, determining the predicted value of the liquid hydrogen demand of the cooling cycle system at the next moment specifically includes:

[0071] Based on the power loss of the superconducting motor at the previous moment and the power loss of the superconducting motor at the current moment, the power loss of the superconducting motor at the next moment is determined. The calculation formula for the power loss of the superconducting motor at the next moment is:

[0072] P′ loss (t+1)=P loss (t)+ΔP loss (1)

[0073] ΔP loss =(P loss (t)-P loss (t-1)) (2)

[0074] Among them, P′ loss (t+1) is the predicted value of the power loss of the superconducting motor at the next moment; P loss (t) is the power loss of the superconducting motor at the current moment; ΔP loss is the change in power loss of the superconducting motor from the previous moment to the current moment; P loss (t-1) is the power loss of the superconducting motor at the previous moment; P loss (t) is the power loss of the superconducting motor at the current moment.

[0075] The next moment's liquid hydrogen flow rate of the superconducting motor is determined based on the power loss of the superconducting motor and the temperature of the liquid hydrogen after heat exchange in the cooling circulation system at the current moment. The calculation formula for the next moment's liquid hydrogen flow rate of the superconducting motor is:

[0076]

[0077] Among them, m LH2,cooling (t+1) is the liquid hydrogen flow rate of the superconducting motor 4 at the next moment; T cooling The temperature required to cool the superconducting motor; T inlet (t) is the temperature of liquid hydrogen after heat exchange in the cooling circulation system at the current moment; C LH2 is the specific heat capacity of liquid hydrogen.

[0078] Based on the liquid hydrogen flow rate of the superconducting motor at the next moment, a predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment is determined.

[0079] The calculation formula for the predicted value of liquid hydrogen demand of the cooling circulation system at the next moment is:

[0080] Q 冷需 (t+1)=m LH2,cooling (t+1)·Δt (4)

[0081] Among them, Q 冷需 (t+1) is the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment; Δt is the duration.

[0082] As an optional embodiment, based on the monitoring data at the current moment and the monitoring data at the previous moment, determining the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment specifically includes:

[0083] Based on the power of the fuel cell system at the current moment and the power of the fuel cell system at the previous moment, the increase in liquid hydrogen demand of the fuel cell system 3 from the previous moment to the current moment is determined.

[0084] The calculation formula for the incremental liquid hydrogen demand of the fuel cell system from the previous moment to the current moment is:

[0085]

[0086] Where ΔQ 燃需(t-1,t) is the incremental demand for liquid hydrogen of the fuel cell system from the previous moment to the current moment; P t is the power of the fuel cell system at the current moment; P t-1 is the power of the fuel cell system at the last moment; η is the efficiency of the fuel cell; LHV H2 It is the lower calorific value of liquid hydrogen.

[0087] The predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is determined based on the liquid hydrogen demand increment of the fuel cell system from the previous moment to the current moment and the liquid hydrogen demand measurement value of the fuel cell at the current moment.

[0088] The calculation formula for the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is:

[0089] Q 燃需 (t+1)=Q 燃需 (t)+ΔQ 燃需(t-1,t) (6)

[0090] Among them, Q 燃需 (t+1) is the liquid hydrogen demand of the fuel cell at the next moment; Q 燃需 (t) is the measured value of the liquid hydrogen demand of the fuel cell at the current moment.

[0091] As an optional embodiment, the intelligent control unit is also connected to the liquid hydrogen storage tank 1, the vaporizer 2, and the cooling circulation system. The intelligent control unit is also used to:

[0092] The operating status parameters of the liquid hydrogen storage tank 1, the cooling circulation system, the vaporizer 2 and the fuel cell system 3 are monitored in real time, and when the operating status parameters of the liquid hydrogen storage tank 1, the cooling circulation system, the vaporizer 2 or the fuel cell system 3 do not meet the corresponding preset range (or when an abnormal situation occurs), an alarm is issued or the corresponding operating status parameters are automatically adjusted to within the preset range.

[0093] As an optional implementation, the intelligent control unit can also adjust the working mode according to environmental changes (such as the flight status of the aerospace platform) to ensure stable operation of the system under various working conditions.

[0094] As an optional implementation, Figure 1 As shown, the cooling circulation system includes: a cooling device 5 and a heat exchanger 6.

[0095] One end of the cooling device 5 is connected to the liquid hydrogen storage tank 1, the other end of the cooling device 5 is connected to the first end of the heat exchanger 6, the second end of the heat exchanger 6 is connected to the first end of the superconducting motor 4, the third end of the heat exchanger 6 is connected to the second end of the superconducting motor 4, and the fourth end of the heat exchanger 6 is connected to the first end of the vaporizer 2.

[0096] The cooling device 5 is used to introduce a portion of the liquid hydrogen stored in the liquid hydrogen storage tank 1 into the heat exchanger 6. The cooling device 5 is responsible for guiding the liquid hydrogen to the cooling area of ​​the superconducting motor 4.

[0097] The heat exchanger 6 is used to perform heat exchange between the introduced liquid hydrogen and the superconducting motor 4 to obtain liquid hydrogen after heat exchange.

[0098] Specifically, liquid hydrogen flows through a pipeline into heat exchanger 6 between the superconducting motor 4, absorbing the heat generated by the superconducting motor 4 during operation. This completes the heat exchange process and ensures that the superconducting material remains in a low-temperature superconducting state. The flow rate and temperature of the liquid hydrogen are precisely regulated by an intelligent control unit to ensure effective cooling.

[0099] Heat exchanger 6, the core component of the cooling cycle, is responsible for heat exchange between the liquid hydrogen and the superconducting motor 4. As the liquid hydrogen passes through heat exchanger 6, it absorbs heat generated by the superconducting motor 4 during operation, maintaining the temperature of the superconducting motor 4 below the critical temperature (<20K) while ensuring a stable flow of liquid hydrogen.

[0100] As an optional embodiment, the fuel cell system 3 includes: a hydrogen storage unit, a fuel cell stack and a power conversion unit (not shown).

[0101] The hydrogen storage unit, the fuel cell stack and the power conversion unit are connected in sequence, and the hydrogen storage unit is also connected to the second end of the gasifier 2 , and the power conversion unit is also connected to the superconducting motor 4 .

[0102] The hydrogen storage unit is used to store the imported hydrogen.

[0103] Fuel cell stacks are used to generate direct current (DC) electricity through an electrochemical reaction using hydrogen. Hydrogen undergoes an electrochemical reaction in the fuel cell stack, releasing energy that is converted into electrical energy.

[0104] The power conversion unit is used to convert direct current into alternating current, and transmits the direct current and the alternating current together as a generated current to the superconducting motor 4. The generated electric energy (generated current) is used to drive the aerospace platform.

[0105] As an optional implementation, Figure 1 As shown, the liquid hydrogen storage tank 1 is connected to the cooling circulation system and the vaporizer 2 through pipelines, and the heat exchanger 6 is connected to the cooling circulation system, the superconducting motor 4 and the vaporizer 2 through pipelines.

[0106] Specifically, the liquid hydrogen storage tank 1 is connected to the cooling circulation system via a low-temperature pipeline for transporting corresponding low-temperature liquid hydrogen.

[0107] The liquid hydrogen storage tank 1 and the vaporizer 2 are connected by a highly insulated pipeline. Liquid hydrogen can also be directly transported from the liquid hydrogen storage tank 1 to the vaporizer 2 through the highly insulated pipeline to avoid cooling loss, and absorb ambient heat or system waste heat in the vaporizer 2, and be converted into high-purity hydrogen (i.e., hydrogen), which is then sent to the fuel cell system 3 for power generation.

[0108] As an optional implementation, Figure 1 As shown, the integrated cooling and energy supply system for the motor further includes: a first flow regulating valve 7 , a second flow regulating valve 8 and a third flow regulating valve 9 .

[0109] The first flow regulating valve is arranged on the pipeline at the outlet of the liquid hydrogen storage tank 1 , the second flow regulating valve is arranged on the pipeline at the inlet of the vaporizer 2 , and the third flow regulating valve is arranged on the pipeline at the inlet of the cooling circulation device.

[0110] Based on the same inventive concept, an embodiment of the present application further provides a control method for an integrated motor cooling and energy supply system implemented based on the aforementioned integrated motor cooling and energy supply system. The solution to the problem provided by this method is similar to the solution described in the aforementioned system. Therefore, the specific limitations of one or more embodiments of the control method for an integrated motor cooling and energy supply system provided below can be found in the above-mentioned limitations on the integrated motor cooling and energy supply system, and will not be repeated here.

[0111] In an exemplary embodiment, Figure 2 As shown, a control method for an integrated cooling and energy supply system for a motor is provided, including:

[0112] Step S1, real-time acquisition of monitoring data; the monitoring data includes: the power of the superconducting motor, the power loss of the superconducting motor, the temperature of the liquid hydrogen after heat exchange in the cooling circulation system, the power of the fuel cell system, and the measured value of the liquid hydrogen demand of the fuel cell system.

[0113] Step S2 : determining a predicted value of the liquid hydrogen demand of the cooling cycle system at the next moment and a predicted value of the liquid hydrogen demand of the fuel cell system at the next moment based on the monitoring data at the current moment and the monitoring data at the previous moment.

[0114] Step S3, based on the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment and the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment, adjust the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the cooling circulation system at the next moment and the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the vaporizer at the next moment.

[0115] Specifically, when the temperature of the superconducting motor reaches a certain threshold, liquid hydrogen is used as a coolant through the cooling circulation system to cool the superconducting motor, ensuring that the liquid hydrogen does not vaporize prematurely during the cooling process. After cooling is complete, the liquid hydrogen enters the vaporizer and is converted into hydrogen gas, continuing to serve as an energy supply for the fuel cell. During the cooling process, the liquid hydrogen is only used to cool the superconducting motor and does not vaporize prematurely. After meeting the cooling requirements, the liquid hydrogen enters the vaporizer and is converted into hydrogen gas, which is supplied to the fuel cell for power generation. This achieves dual utilization of liquid hydrogen, optimizes the utilization efficiency of liquid hydrogen resources, meets the dual needs of the aerospace platform for superconducting motor cooling and energy supply, and improves the energy management efficiency and reliability of the aerospace platform.

[0116] Furthermore, the working process of the integrated cooling and energy supply system for motors is now explained in detail, which is mainly divided into liquid hydrogen energy supply, liquid hydrogen cooling and intelligent control processes.

[0117] Step S100: Start.

[0118] After the space launch platform is activated, the intelligent control unit first checks the level of liquid hydrogen in the liquid hydrogen storage tank 1 and confirms the normal status of all modules. It then directs the liquid hydrogen storage tank 1 to deliver a small amount of liquid hydrogen to the vaporizer 2 for pre-gasification, providing an initial hydrogen supply for the fuel cell system 3. During this process, the liquid hydrogen is simultaneously prepared to enter the cooling circuit, ensuring that the superconducting motor 4 maintains its superconducting temperature (approximately 20K) upon startup.

[0119] Step S200: aerospace carrier platform operation phase.

[0120] Step S210: Liquid hydrogen energy supply process, specifically including:

[0121] In step S2101 , liquid hydrogen is converted into liquid hydrogen through the vaporizer 2 and used as energy supply for the fuel cell.

[0122] In step S2102, liquid hydrogen is directly transported from the liquid hydrogen storage tank 1 to the vaporizer 2 through a cryogenic pipeline, where it absorbs ambient heat or system waste heat and is converted into high-purity hydrogen.

[0123] In step S2103 , the gasified hydrogen passes through the flow and pressure regulating device and enters the fuel cell system 3 , where it reacts with oxygen under the action of a catalyst to generate electrical energy (direct current) and by-product water.

[0124] The liquid hydrogen demand of the fuel cell system 3 at the next moment is calculated using formulas (5)-(6).

[0125] In step S2104, the generated DC power is transmitted to the superconducting motor 4 through an inverter (converted into AC power through an inverter) or a DC regulator to meet the power demand of the system and provide power for the aerospace superconducting motor 4 and other equipment on the platform.

[0126] In step S2105, the water generated by the reaction is directed to a wastewater collection system and can be used for cooling other modules of the system or for waste heat management, thereby further improving resource utilization of the system.

[0127] Step S220: Liquid hydrogen cooling process, specifically including:

[0128] In step S2201, upon system startup, liquid hydrogen begins flowing into the cooling circulation system as a coolant, ensuring that the superconducting motor 4 remains within the required low temperature range (approximately 20K). The superconducting motor 4 must operate continuously at low temperatures, so the intelligent control unit monitors the temperature of the superconducting motor 4 in real time to ensure it remains around 20K. The liquid hydrogen cooling process begins upon system startup, ensuring that the superconducting motor 4 remains in a superconducting state.

[0129] In step S2202, liquid hydrogen is transported to the cooling area of ​​the superconducting motor 4 through a cryogenic pipeline. Liquid hydrogen acts as a coolant and absorbs the heat generated during the operation of the motor through heat exchange with the superconducting motor 4, ensuring that the temperature of the superconducting motor 4 does not exceed the superconducting critical temperature, thereby preventing the superconducting temperature from deteriorating.

[0130] In step S2203, the liquid hydrogen is kept at a low temperature while passing through the cooling circulation system, and the flow regulating valve is used to ensure the precise matching of the flow required for cooling.

[0131] The liquid hydrogen demand of the cooling cycle system at the next moment can be calculated by equations (1)-(4).

[0132] In step S2204, as the liquid hydrogen absorbs the heat generated by the superconducting motor 4, its temperature will rise slightly, but the liquid hydrogen should always remain within the required cooling temperature range. The liquid hydrogen will not heat up excessively during the cooling process, ensuring that the low-temperature cooling effect of the liquid hydrogen is sustained and stable.

[0133] In step S2205, the liquid hydrogen enters the heat exchanger 6, where it exchanges heat with other cooling liquids or unused liquid hydrogen, further ensuring that the liquid hydrogen temperature remains within a reasonable range. The temperature of the liquid hydrogen is dynamically adjusted based on the cooling requirements to prevent temperature increases from negatively impacting the cooling efficiency of the superconducting motor 4.

[0134] In step S2206, if the temperature of the liquid hydrogen after heat exchange remains around 20K, it continues to be used to cool the superconducting motor 4. If the temperature of the liquid hydrogen rises above the set cooling requirement, the liquid hydrogen enters the vaporizer 2 for vaporization. At this point, the vaporized hydrogen enters the fuel cell system 3 and continues to provide energy for the platform.

[0135] In step S2207, the liquid hydrogen after heat exchange enters the vaporizer 2, further absorbs heat to complete the gasification process, and the gasified hydrogen is guided to the fuel cell and merges with the hydrogen in the direct energy supply path to jointly participate in the power generation of the fuel cell.

[0136] In step S2208, the heat absorbed during the gasification process is partially used to heat the liquid hydrogen, reducing system energy consumption. The residual heat from the reaction can be recycled to cool or preheat other components, achieving a closed energy loop.

[0137] Step S230: During the intelligent control process, real-time and comprehensive supervision and control of each process of the entire system from startup to operation to completion. Specifically including:

[0138] Step S2301: collect monitoring data in real time.

[0139] Step S2302: transmit the monitoring data to the intelligent control unit through the sensor and signal processor.

[0140] In step S2303, based on the heat load of the superconducting motor 4 and the energy demand of the platform, the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment and the predicted value of the liquid hydrogen demand of the fuel cell system 3 at the next moment are calculated in real time. The liquid hydrogen flow rate and vaporization rate are adjusted using the AI ​​algorithm to dynamically adjust the cooling and energy supply of the liquid hydrogen, thereby controlling the motor power and cooling efficiency.

[0141] Step S2304: When the task is completed or the motor load is reduced, the system gradually reduces the liquid hydrogen flow rate while ensuring the safe reflux and storage of the liquid hydrogen storage tank 1.

[0142] Step S2305 monitors the operating status of each module and diagnoses abnormal conditions, such as insufficient liquid hydrogen flow, overheating, or decreased gasification efficiency. When the system is abnormal, an alarm is issued or the operating parameters are automatically adjusted to ensure platform safety.

[0143] Step S300: The operation of the aerospace carrier platform ends.

[0144] After the operation is completed, the intelligent control unit gradually reduces the liquid hydrogen flow rate to ensure the safe return of liquid hydrogen in the liquid hydrogen storage tank 1. At the same time, the intelligent control unit monitors the operating status of each module, promptly diagnoses abnormal conditions, and issues alarms or automatically adjusts operating parameters when the system is abnormal, ensuring system safety.

[0145] Beneficial effects of this application:

[0146] The motor cooling and energy supply integrated system of the present application can not only use liquid hydrogen to provide cooling for the superconducting motor 4, but also transport the hydrogen gasified during the cooling process to the fuel cell to provide fuel; at the same time, the system can also directly gasify the liquid hydrogen and supply it to the fuel cell. Through the intelligent regulation and dynamic control of the liquid hydrogen flow in the energy supply and cooling paths, an efficient balance between cooling demand and energy supply is ensured, the dual needs of cooling and energy supply of the superconducting motor 4 are met, and the efficiency of liquid hydrogen resource utilization is optimized; through the integrated cooling and energy supply integrated system, the independent coolant circulation loop and fuel supply pipeline in the traditional cooling system are eliminated, the number of components such as pipes, pumps and valves is reduced, the lightweight design of the system is achieved, and the stability of the operation of the aerospace superconducting motor 4 and the reliability of the platform's energy management are significantly improved.

[0147] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0148] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0149] The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may include, but are not limited to, general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic units, data processing logic units based on quantum computing, and the like.

[0150] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0151] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the system, method, and core concept of this application. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of this application. In summary, the contents of this specification should not be construed as limiting this application.

Claims

1. An integrated cooling and energy supply system for a motor, characterized in that: The system includes: a liquid hydrogen storage tank, a cooling circulation system, a vaporizer, a fuel cell system and an intelligent control unit; The superconducting motor is respectively connected with the cooling circulation system, the fuel cell system and the intelligent control unit; The intelligent control unit is used for: Acquire monitoring data in real time; monitoring data includes: superconducting motor power, superconducting motor power loss, liquid hydrogen temperature after heat exchange in the cooling circulation system, fuel cell system power, and fuel cell system liquid hydrogen demand measurement value; Determining a predicted value of the liquid hydrogen demand of the cooling cycle system at a next moment and a predicted value of the liquid hydrogen demand of the fuel cell system at a next moment based on the monitoring data at a current moment and the monitoring data at a previous moment; Adjusting the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the cooling circulation system and the liquid hydrogen flow rate flowing from the liquid hydrogen storage tank into the vaporizer at the next moment based on the predicted value of the liquid hydrogen demand of the cooling circulation system and the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment; The liquid hydrogen storage tank is used to store liquid hydrogen with a temperature lower than a preset threshold; The cooling circulation system is used to perform heat exchange between the liquid hydrogen flowing into the cooling circulation system and the superconducting motor to cool the superconducting motor, and to introduce the liquid hydrogen after heat exchange into the vaporizer; The vaporizer is used to vaporize the liquid hydrogen flowing into the vaporizer from the liquid hydrogen storage tank and the liquid hydrogen after heat exchange to obtain hydrogen gas, and introduce the hydrogen gas into the fuel cell system to provide energy for the fuel cell system; The fuel cell system is configured to generate electricity using the introduced hydrogen as fuel and transmit the generated current to the superconducting motor.

2. The integrated cooling and energy supply system for a motor according to claim 1, characterized in that: Based on the monitoring data at the current moment and the monitoring data at the previous moment, a predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment is determined, specifically including: determining the power loss of the superconducting motor at a next moment based on the power loss of the superconducting motor at a previous moment and the power loss of the superconducting motor at a current moment; Determine the liquid hydrogen flow rate of the superconducting motor at the next moment based on the power loss of the superconducting motor at the next moment and the temperature of the liquid hydrogen after heat exchange in the cooling circulation system at the current moment; Based on the liquid hydrogen flow rate of the superconducting motor at the next moment, a predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment is determined.

3. The integrated cooling and energy supply system for a motor according to claim 2, characterized in that: The calculation formula for the predicted value of liquid hydrogen demand of the cooling circulation system at the next moment is: Q 冷需 (t+1)=m LH2,cooling (t+1)·Δt; P′ loss (t+1)=P loss (t)+ΔP loss ; Among them, Q 冷需 (t+1) is the predicted value of liquid hydrogen demand of the cooling cycle system at the next moment; m LH2,cooling (t+1) is the liquid hydrogen flow rate of the superconducting motor at the next moment; Δt is the duration; P′ loss (t+1) is the predicted value of the power loss of the superconducting motor at the next moment; T cooling The temperature required to cool the superconducting motor; T inlet (t) is the temperature of liquid hydrogen after heat exchange in the cooling circulation system at the current moment; C LH2 is the specific heat capacity of liquid hydrogen; P loss (t) is the power loss of the superconducting motor at the current moment; ΔP loss is the change in power loss of the superconducting motor from the previous moment to the current moment.

4. The integrated cooling and energy supply system for a motor according to claim 1, characterized in that: Determine the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment based on the monitoring data at the current moment and the monitoring data at the previous moment, specifically including: determining an increment in liquid hydrogen demand of the fuel cell system from the previous moment to the current moment based on the current power of the fuel cell system and the power of the fuel cell system at the previous moment; The predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is determined based on the liquid hydrogen demand increment of the fuel cell system from the previous moment to the current moment and the liquid hydrogen demand measurement value of the fuel cell at the current moment.

5. The integrated cooling and energy supply system for a motor according to claim 4, characterized in that: The calculation formula for the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment is: Q 燃需 (t+1)=Q 燃需 (t)+ΔQ 燃需(t-1,t) ; Where ΔQ 燃需(t-1,t) is the incremental demand for liquid hydrogen of the fuel cell system from the previous moment to the current moment; P t is the power of the fuel cell system at the current moment; P t-1 is the power of the fuel cell system at the last moment; η is the efficiency of the fuel cell; LHV H2 is the lower calorific value of liquid hydrogen; Q 燃需 (t+1) is the liquid hydrogen demand of the fuel cell at the next moment; Q 燃需 (t) is the measured value of the liquid hydrogen demand of the fuel cell at the current moment.

6. The integrated cooling and energy supply system for a motor according to claim 1, characterized in that: The cooling circulation system includes: a cooling device and a heat exchanger; One end of the cooling device is connected to the liquid hydrogen storage tank, the other end of the cooling device is connected to the first end of the heat exchanger, the second end of the heat exchanger is connected to the first end of the superconducting motor, the third end of the heat exchanger is connected to the second end of the superconducting motor, and the fourth end of the heat exchanger is connected to the first end of the vaporizer; The cooling device is used to introduce a portion of the liquid hydrogen stored in the liquid hydrogen storage tank into the heat exchanger; The heat exchanger is used to perform heat exchange between the introduced liquid hydrogen and the superconducting motor to obtain liquid hydrogen after heat exchange.

7. The integrated cooling and energy supply system for a motor according to claim 1, characterized in that: The fuel cell system includes: a hydrogen storage unit, a fuel cell stack and a power conversion unit; The hydrogen storage unit is used to store the imported hydrogen; The fuel cell stack is used to generate direct current by utilizing hydrogen to generate an electrochemical reaction; The power conversion unit is configured to convert the direct current into alternating current, and transmit the direct current and the alternating current together as a generated current to the superconducting motor.

8. The integrated cooling and energy supply system for a motor according to claim 1, characterized in that: The liquid hydrogen storage tank is connected to the cooling circulation system and the vaporizer through pipelines, and the heat exchanger is connected to the cooling circulation system, the superconducting motor and the vaporizer through pipelines.

9. The integrated cooling and energy supply system for a motor according to claim 8, characterized in that: The motor cooling and energy supply integrated system further includes: a first flow regulating valve, a second flow regulating valve and a third flow regulating valve; The first flow regulating valve is arranged on the pipeline at the outlet of the liquid hydrogen storage tank, the second flow regulating valve is arranged on the pipeline at the inlet of the vaporizer, and the third flow regulating valve is arranged on the pipeline at the inlet of the cooling circulation device.

10. A control method for an integrated cooling and energy supply system for a motor, characterized in that: The control method of the integrated cooling and energy supply system for a motor is implemented based on the integrated cooling and energy supply system for a motor according to any one of claims 1 to 9, and the control method of the integrated cooling and energy supply system for a motor includes: Acquire monitoring data in real time; monitoring data includes: superconducting motor power, superconducting motor power loss, liquid hydrogen temperature after heat exchange in the cooling circulation system, fuel cell system power, and fuel cell system liquid hydrogen demand measurement value; Determining a predicted value of the liquid hydrogen demand of the cooling cycle system at a next moment and a predicted value of the liquid hydrogen demand of the fuel cell system at a next moment based on the monitoring data at a current moment and the monitoring data at a previous moment; Based on the predicted value of the liquid hydrogen demand of the cooling circulation system at the next moment and the predicted value of the liquid hydrogen demand of the fuel cell system at the next moment, the liquid hydrogen flow rate flowing into the cooling circulation system from the liquid hydrogen storage tank and the liquid hydrogen flow rate flowing into the vaporizer from the liquid hydrogen storage tank at the next moment are adjusted.

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