Methanol generator group and lithium battery hybrid power supply method and system

Abstract

The invention belongs to the technical field of energy power supply, and discloses a methanol generator group and lithium battery hybrid power supply system, which comprises a base plate, and a box body, a water circulation temperature control system, a waste gas separation system and a carbon dioxide storage system are arranged on the surface of the base plate; a methanol generator group and a lithium battery pack are respectively arranged in the box body, an air cooling unit system is mounted on one side of the box body, and a cold plate type liquid cooling system is mounted above the box body; the methanol generator group provides stable basic power, the lithium battery pack quickly responds to load fluctuation, the two cooperate to realize a redundant power supply path, power supply interruption caused by single equipment failure is avoided, and the method is suitable for high-reliability demand scenes. Water and carbon dioxide are recycled through a waste gas separation system, water resources are used for temperature control circulation, carbon dioxide is used for preparing fuel, and echelon utilization of the resources is achieved; meanwhile, the temperature control system is coordinated in multiple modes and adapts to different environments, temperature control energy consumption is reduced, and the overall energy utilization rate is increased.

Description

Technical Field

[0001] This invention relates to the field of energy supply technology, specifically to a method and system for hybrid power supply using methanol generator sets and lithium batteries. Background Technology

[0002] With the continuous growth of energy demand and increasing environmental awareness, efficient energy utilization and sustainable development have become a global focus. In high-energy-consuming and high-load industrial applications such as oil drilling platforms, traditional power supply systems face numerous challenges. In recent years, hybrid power supply systems combining methanol generators and lithium batteries have gradually gained attention as an innovative solution. This system combines the stable power supply capability of methanol generators with the fast response characteristics of lithium batteries, aiming to improve power supply efficiency, reduce operating costs, and minimize environmental impact.

[0003] Commercially available petroleum generators primarily rely on diesel or gasoline as fuel, resulting in relatively low combustion efficiency and slow response times under load fluctuations. Furthermore, the combustion process generates significant amounts of pollutants such as carbon oxides, nitrogen oxides, and particulate matter, causing severe environmental pollution. Compared to traditional petroleum generator systems, hybrid power supply systems combining methanol generators and lithium battery packs demonstrate significant advantages in energy efficiency, environmental friendliness, system reliability, economy, flexibility, noise and vibration control, and emergency response capabilities. This hybrid power supply system is not only suitable for high-energy-consuming, high-load industrial applications such as oil drilling platforms, but can also be widely applied in data centers, distributed energy systems, and other fields, providing a new solution for achieving efficient, environmentally friendly, and sustainable energy management.

[0004] However, traditional hybrid power supply systems still have some shortcomings in practical applications, especially in terms of exhaust gas recovery and heat dissipation management. Traditional hybrid power supply systems rely solely on methanol generators and lithium batteries. While the methanol generator-lithium battery hybrid power supply system combines the advantages of stable power supply from methanol generators and the fast response of lithium batteries, existing hybrid systems still have significant drawbacks: Firstly, there is a lack of effective recovery and utilization of exhaust gases from methanol generator combustion, resulting in the direct emission of water and carbon dioxide from the exhaust gases, causing resource waste and environmental burden; secondly, the heat dissipation management scheme is imperfect, and a single heat dissipation method is difficult to adapt to different temperature environments and load conditions, affecting the system's operational stability; furthermore, energy management only considers electricity and load, without taking into account the status of resources such as water and carbon dioxide, leading to low overall system efficiency and poor economic performance. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for hybrid power supply using methanol generator groups and lithium batteries, in order to solve the problems of resource waste, poor heat dissipation, and imperfect energy management in the hybrid power supply system mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A hybrid power supply system for methanol generator sets and lithium batteries includes a base plate. The surface of the base plate is provided with a housing, a water circulation temperature control system, an exhaust gas separation system, and a carbon dioxide storage system. The housing is equipped with a methanol generator set and a lithium battery pack, and an air-cooled unit system is installed on one side of the housing, while a cold plate liquid-cooled system is installed on the top. The methanol generator group includes at least two methanol generators, and each methanol generator is connected to the exhaust gas separation system and the water circulation temperature control system through a fluid pipeline. The water circulation temperature control system is also connected to the lithium battery pack through a fluid pipeline. The liquid output end of the waste gas separation system is connected to the water circulation temperature control system through a fluid pipeline, and the gas output end of the waste gas separation system is connected to the carbon dioxide storage system through a fluid pipeline. It also includes a main controller, which is electrically connected to the water circulation temperature control system, the waste gas separation system, the carbon dioxide storage system, the methanol generator group, the lithium battery pack, the air-cooled unit system, and the cold plate liquid cooling system.

[0007] More preferably, the methanol generator group includes at least a first methanol generator and a second methanol generator, and the methanol generator group and the lithium battery pack work together to provide power. The lithium battery pack is used to respond to instantaneous load changes, and the methanol generator group is used to provide stable power and charge the lithium battery pack.

[0008] More preferably, the waste gas separation system includes a condenser and a gas-liquid separator, which are connected by a fluid pipeline. The liquid output end of the gas-liquid separator is connected to the water circulation temperature control system through a fluid pipeline, and the gas output end is connected to the carbon dioxide storage system through a fluid pipeline.

[0009] More preferably, the water circulation temperature control system includes a water storage shell frame, a central water tank, a cooler, a heater, and a cold water storage bottle. The central water tank is connected to the liquid output end of the cooler, the heater, the cold water storage bottle, and the gas-liquid separator. The cooler is connected to the cold water storage bottle through a fluid pipeline. The cold water storage bottle is connected to a cold plate liquid cooling system. The heater is connected to a heat flow pipeline inside the box through a fluid pipeline.

[0010] More preferably, the cold plate liquid cooling system includes a cold plate outer shell frame, a rectangular thin-layer cold plate, a fluid input pipeline and a fluid output pipeline, wherein the fluid input pipeline is connected to a cold water storage bottle through a fluid pipeline, and the fluid output pipeline is connected to a central water tank through a fluid pipeline. The rectangular thin-film cold plate is provided in multiple sets, and at least two sets of rectangular thin-film cold plates are evenly and vertically placed inside the cold plate shell frame. The rectangular thin-film cold plate has a hollow structure as a whole, and perforated connectors are symmetrically provided at the upper and lower ends of one side for fluid transmission. Tapered connecting pipes are arranged on both the fluid inlet pipe and the fluid outlet pipe for connecting to the perforated connectors on the rectangular thin-film cold plate. The number of tapered connecting pipes is the same as the number of rectangular thin-film cold plates.

[0011] More preferably, the carbon dioxide storage system includes at least one carbon dioxide storage cylinder for storing carbon dioxide and for subsequent production of methanol fuel, and the carbon dioxide storage cylinder is detachably disposed inside the storage shell frame.

[0012] More preferably, one side surface inside each of the boxes is provided with a glass fiber mounting layer, the surface of the mounting layer is provided with a temperature sensor, the central water tank of the water circulation temperature control system is provided with a water level sensor, and the carbon dioxide storage cylinder of the carbon dioxide storage system is provided with a pressure sensor.

[0013] This invention also provides the following technical solutions: A method for hybrid power supply using a methanol generator group and lithium batteries includes the following steps: Step 1: Before starting the system, check the remaining power of the lithium battery pack, the water level of the central water tank, and the status of the methanol generator group; if the remaining power of the lithium battery pack is lower than the safety threshold, start external charging; if the water level of the central water tank is low, start external water replenishment; if the methanol generator is in an abnormal state, trigger an alarm for maintenance. Step 2: During system startup, determine the startup load; if the load is high, the lithium battery pack will discharge first to meet the instantaneous power demand; if the load is low, the methanol generator group will be the main power supply equipment and will also charge the lithium battery pack. Step 3: During the stable operation phase of the system, the main controller prioritizes the remaining power of the lithium battery pack as the first priority, the operating load demand as the second priority, the water level of the central water tank as the third priority, and the carbon dioxide level of the carbon dioxide storage system as the fourth priority, and adjusts the power supply mode accordingly. When the carbon dioxide content in the carbon dioxide storage cylinder is high, the power of the methanol generator group is appropriately reduced only if it does not affect the first three priority targets; otherwise, the exhaust valve of the carbon dioxide storage cylinder is opened to release excess carbon dioxide. Step 4: During system operation, the exhaust gas separation system continuously processes the combustion exhaust gas of the methanol generator group, recovers liquid water to the central water tank and gaseous carbon dioxide to the carbon dioxide storage system; the temperature inside the tank is controlled through the coordinated operation of the cold plate liquid cooling system, the air cooling unit system and the heater.

[0014] More preferably, in step 3, if the remaining power of the lithium battery pack is low, the methanol generator group mainly supplies power and charges the lithium battery pack; if the remaining power of the lithium battery pack is high and the operating load demand is high, the output power ratio of the lithium battery pack is increased; if the water level of the central water tank is low, the methanol generator group mainly supplies power; when all conditions are balanced, the two work together to supply power. In step 3, during the stable operation phase of the system, the actual output power of the methanol generator group and the lithium battery pack is monitored in real time by a power sensor integrated in the power supply line; the lithium battery pack is equipped with a power distribution module, which switches between power supply and charging modes according to the instructions of the main controller.

[0015] More preferably, in step 4, the cold plate liquid cooling system delivers coolant to the rectangular thin-layer cold plate through a cold water storage bottle, absorbs heat, and then returns the water to the central water tank; in a low-temperature environment, the heater heats the water in the central water tank and delivers it to the hot flow pipeline to preheat the equipment inside the tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are: High power supply reliability: The methanol generator group provides a stable base power, and the lithium battery pack responds quickly to load fluctuations. The two work together to achieve a redundant power supply path, avoiding power outages caused by the failure of a single device, which is suitable for scenarios with high reliability requirements.

[0017] Excellent energy efficiency: Water and carbon dioxide are recovered through the waste gas separation system. Water resources are used for temperature control circulation, and carbon dioxide is used to produce fuel, realizing the cascade utilization of resources. At the same time, the temperature control system works in multiple ways to adapt to different environments, reduce temperature control energy consumption, and improve the overall energy efficiency.

[0018] It is environmentally friendly: it avoids direct emissions of exhaust gas from methanol generators, reducing carbon emissions and water pollution; the recycling of carbon dioxide further reduces fuel consumption, meeting the needs of green and low-carbon development.

[0019] Good economic benefits: resource recycling reduces water and fuel procurement costs; intelligent energy management reduces equipment wear and tear, extends service life, and lowers operation and maintenance costs.

[0020] Highly adaptable: It can be flexibly applied to different scenarios such as oil drilling platforms and data centers, and can adapt to different environments such as high temperature and low temperature to meet diverse power supply needs.

[0021] The methanol generator group and lithium battery hybrid power supply system determines the power supply mode by comprehensively considering the remaining power of the lithium battery pack, the system operating load demand, the water level in the water tank, and the carbon dioxide level in the gas storage cylinder. Compared with the energy management scheme of traditional hybrid power supply systems, by incorporating water management and carbon dioxide management into the system composition and its energy management scheme, the output power ratio of the methanol generator group and lithium battery pack under different system states is further refined. By reusing the water and carbon dioxide generated by the methanol generator group, optimal power distribution and optimal management of internal water circulation and carbon emissions are achieved, while also promoting green economic energy supply. Attached Figure Description

[0022] Figure 1 This is a frontal overall schematic diagram of the methanol generator group and lithium battery hybrid power supply system provided in an embodiment of the present invention; Figure 2 This is a front internal schematic diagram of the methanol generator group and lithium battery hybrid power supply system provided in an embodiment of the present invention; Figure 3 This is a side view of the methanol generator group and lithium battery hybrid power supply system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the waste gas separation system provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the water circulation temperature control system provided in an embodiment of the present invention; Figure 6 This is a flowchart of a method for hybrid power supply using methanol generator groups and lithium batteries provided in an embodiment of the present invention; Figure 7 This is a flowchart of the waste gas separation method provided in the embodiments of the present invention; In the diagram: 1. Base plate; 2. First methanol generator housing; 3. Lithium battery pack; 4. Air-cooled unit system; 5. Heater; 6. Water storage shell frame; 7. Central water tank; 8. Refrigerator; 9. Cold water storage bottle; 10. Water circulation temperature control system; 11. First fluid pipeline; 12. Condenser; 13. Gas-liquid separator; 14. Exhaust gas separation system; 15. Gas storage shell frame; 16. Carbon dioxide storage cylinder; 17. Carbon dioxide storage system; 18. Second fluid pipeline; 19. Third fluid pipeline; 20. Fourth fluid pipeline. 21. Fifth fluid pipeline; 22. Sixth fluid pipeline; 23. Fluid input pipeline; 24. Cold plate outer shell frame; 25. Rectangular thin-layer cold plate; 26. Fluid output pipeline; 27. Cold plate type liquid cooling system; 28. Seventh fluid pipeline; 29. ​​Eighth fluid pipeline; 30. Ninth fluid pipeline; 31. Tenth fluid pipeline; 32. Hot flow pipeline; 33. First methanol generator; 34. Second methanol generator; 35. Eleventh fluid pipeline; 36. Second methanol generator housing; 37. Lithium battery housing. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-7 The present invention provides a technical solution: A hybrid power supply system for methanol generator set and lithium battery includes a base plate 1. The surface of the base plate 1 is provided with a box, a water circulation temperature control system 10, an exhaust gas separation system 14 and a carbon dioxide storage system 17. The methanol generator set and the lithium battery pack 3 are respectively installed inside the box, and an air-cooled unit system 4 is installed on one side of the box and a cold plate liquid cooling system 27 is installed on the top. The methanol generator group includes at least two methanol generators, and each methanol generator is connected to the exhaust gas separation system 14 and the water circulation temperature control system 10 through the first fluid pipeline 11. The water circulation temperature control system 10 is also connected to the lithium battery pack 3 through the fluid pipeline. The liquid output end of the exhaust gas separation system 14 is connected to the water circulation temperature control system 10 through the fourth fluid pipeline 20, and the gas output end of the exhaust gas separation system 14 is connected to the carbon dioxide storage system 17 through the sixth fluid pipeline 22. It also includes a main controller, which is electrically connected to the water circulation temperature control system 10, the exhaust gas separation system 14, the carbon dioxide storage system 17, the methanol generator group, the lithium battery pack 3, the air-cooled unit system 4, and the cold plate liquid cooling system 27.

[0025] In this invention, the methanol generator group includes at least a first methanol generator 33 and a second methanol generator 34, and the methanol generator group and the lithium battery pack 3 work together to provide power. The lithium battery pack 3 is used to respond to instantaneous load changes, while the methanol generator group is used to provide stable power and charge the lithium battery pack 3.

[0026] In this invention, the waste gas separation system 14 includes a condenser 12 and a gas-liquid separator 13. The condenser 12 and the gas-liquid separator 13 are connected by a second fluid pipeline 18 and a third fluid pipeline 19. The liquid output end of the gas-liquid separator 13 is connected to the water circulation temperature control system 10 through a fourth fluid pipeline 20, and the gas output end is connected to the carbon dioxide storage system 17 through a sixth fluid pipeline 22. The system comprises a condenser 12 as the first separation device and a gas-liquid separator 13 as the second separation device. Exhaust gas from the methanol generator set is transferred to the condenser 12, where it is initially separated into liquid water and a gas-liquid mixture. The liquid water and the remaining gas-liquid mixture are then transferred to the gas-liquid separator 13. The gas-liquid separator 13 includes a swirling separation chamber based on a spiral guiding structure and a bottom liquid collection area (not shown in the figure) based on gravity separation principles to ensure further separation of the gas-liquid mixture into liquid water and gaseous carbon dioxide. Furthermore, the gaseous carbon dioxide is transferred through a sixth fluid pipeline 22 to a carbon dioxide storage cylinder 16 for subsequent production of methanol fuel to improve fuel economy. The liquid water is transferred through a fourth fluid pipeline 20 to a central water tank 7 for subsequent adjustment to form a system water circulation. Simultaneously, a backflow prevention chamber is provided in the third fluid pipeline 19 to prevent the separated gas from flowing back from the third fluid pipeline 19, thereby effectively avoiding gas leakage and improving system safety.

[0027] The condenser 12 and the gas-liquid separator 13 are respectively connected to the roller screw set on the base plate 1 by a slider, so that the condenser 12 and the gas-liquid separator 13 can move back and forth along the direction of the roller screw, which is convenient for the installation of various fluid pipelines and subsequent maintenance.

[0028] In this invention, the water circulation temperature control system 10 includes a water storage shell frame 6, a central water tank 7, a cooler 8, a heater 5, and a cold water storage bottle 9. The central water tank 7 is connected to the liquid output end of the cooler 8, the heater 5, the cold water storage bottle 9, and the gas-liquid separator 13. The cold water storage bottle 9 is connected to the central water tank 7 through the fifth fluid pipeline 21. The cooler 8 is connected to the cold water storage bottle 9 through the tenth fluid pipeline 31. The cold water storage bottle 9 is connected to the cold plate liquid cooling system 27. The heater 5 is connected to the heat flow pipeline 32 inside the box through the seventh fluid pipeline 28.

[0029] In this invention, the cold plate liquid cooling system 27 includes a cold plate outer shell frame 24, a rectangular thin-layer cold plate 25, a fluid input pipeline 23 and a fluid output pipeline 26. The fluid input pipeline 23 is connected to the cold storage water bottle 9 through the eighth fluid pipeline 29, and the fluid output pipeline 26 is connected to the central water tank 7 through the ninth fluid pipeline 30. Multiple sets of rectangular thin-film cold plates 25 are provided, with at least two sets of rectangular thin-film cold plates 25 evenly and vertically placed inside the cold plate outer shell frame 24. The rectangular thin-film cold plates 25 have a hollow structure as a whole, and perforated connectors are symmetrically provided at the upper and lower ends of one side for fluid transmission. Tapered connecting pipes are arranged on the fluid inlet pipe 23 and the fluid outlet pipe 26 for connecting with the perforated connectors on the rectangular thin-film cold plates 25. The number of tapered connecting pipes is the same as the number of rectangular thin-film cold plates 25.

[0030] In the water circulation temperature control system 10, the central water tank 7, which is equipped with the first methanol generator housing 2, the second methanol generator housing 36, and the lithium battery housing 37, is interconnected through the eleventh fluid pipeline 35. The central water tank 7 receives liquid water output from the gas-liquid separator 13, water output from the cold plate liquid cooling system 27, and water output from the heater 5 and the cold water storage bottle 9. After the cooler 8 cools the water in the central water tank 7, it is transferred to the cold water storage bottle 9 for heat dissipation in high temperature or normal environment. After the heater 5 heats the water in the central water tank 7, it is transferred to the hot flow pipeline 32 for preheating in low temperature or starting environment.

[0031] In this invention, the carbon dioxide storage system 17 includes at least one carbon dioxide storage cylinder 16 for storing carbon dioxide and for subsequent preparation of methanol fuel, and the carbon dioxide storage cylinder 16 is detachably disposed inside the storage shell frame 15.

[0032] In this invention, the housing includes a first methanol generator housing 2, a second methanol generator housing 36, and a lithium battery housing 37. The first methanol generator housing 2 and the second methanol generator housing 36 are respectively equipped with a first methanol generator 33 and a second methanol generator 34. The lithium battery housing 37 is equipped with a lithium battery pack 3. One side surface of the interior of the first methanol generator housing 2, the second methanol generator housing 36, and the lithium battery housing 37 is provided with a glass fiber mounting layer. A temperature sensor is provided on the surface of the mounting layer. A water level sensor is installed in the central water tank 7 of the water circulation temperature control system 10. A pressure sensor is installed in the carbon dioxide storage cylinder 16 of the carbon dioxide storage system 17.

[0033] This invention also provides the following technical solutions: A method for hybrid power supply using a methanol generator group and lithium batteries includes the following steps: Step 1: Before starting the system, check the remaining power of lithium battery pack 3, the water level of central water tank 7, and the status of methanol generator group; if the remaining power of lithium battery pack 3 is lower than the safety threshold, start external charging; if the water level of central water tank 7 is low, start external water replenishment; if the methanol generator is in an abnormal state, alarm and repair. Step 2: During system startup, determine the startup load; if the load is high, lithium battery pack 3 will be discharged first to meet the instantaneous power demand; if the load is low, the methanol generator group will be the main power supply equipment and will also charge lithium battery pack 3. Step 3: During the stable operation phase of the system, the main controller prioritizes the remaining power of the lithium battery pack 3 as the first priority, the operating load demand as the second priority, the water level of the central water tank 7 as the third priority, and the carbon dioxide level of the carbon dioxide storage system 17 as the fourth priority, and adjusts the power supply mode accordingly. When the carbon dioxide content in the carbon dioxide storage cylinder 16 is high, the power of the methanol generator group is appropriately reduced only if it does not affect the first three priority targets; otherwise, the exhaust valve of the carbon dioxide storage cylinder 16 is opened to release excess carbon dioxide. Step 4: During system operation, the exhaust gas separation system 14 continuously processes the combustion exhaust gas of the methanol generator group, recovers liquid water to the central water tank 7 and gaseous carbon dioxide to the carbon dioxide storage system 17; the temperature inside the tank is controlled by the coordinated action of the cold plate liquid cooling system 27, the air cooling unit system 4 and the heater 5.

[0034] In this invention, in step 3, if the remaining power of the lithium battery pack 3 is low, the methanol generator group mainly supplies power and charges the lithium battery pack 3; if the remaining power of the lithium battery pack 3 is high and the operating load demand is high, the output power ratio of the lithium battery pack 3 is increased; if the water level of the central water tank 7 is low, the methanol generator group mainly supplies power; when all conditions are balanced, the two work together to supply power. In step 3, during the stable operation phase of the system, the actual output power of the methanol generator group and lithium battery pack 3 is monitored in real time by a power sensor integrated in the power supply line; the lithium battery pack 3 is equipped with a power distribution module, which switches between power supply and charging modes according to the instructions of the main controller.

[0035] In this invention, in step 4, the cold plate liquid cooling system 27 delivers coolant to the rectangular thin-layer cold plate 25 through the cold water storage bottle 9, absorbs heat, and then returns the water to the central water tank 7; in a low-temperature environment, the heater 5 heats the water in the central water tank 7 and delivers it to the hot flow pipeline 32 to preheat the equipment inside the tank.

[0036] Example: Figure 6As shown, before system startup, the remaining power of lithium battery pack 3, the water level of central water tank 7, and the status of methanol generator group are checked. If the remaining power of lithium battery pack 3 is lower than the safety threshold, such as if the SOC of lithium battery pack is lower than 10%, the hybrid power supply system immediately alarms and terminates the operation process, and connects an external power source to charge lithium battery pack 3. After confirming that the remaining power of lithium battery pack 3 is normal, the water level of central water tank 7 is checked through the water level sensor. If the water level of central water tank 7 is low, the external water replenishment program is started before starting the first methanol generator 33 and the second methanol generator 34 to replenish the water level of central water tank 7 to the middle level. After confirming that the water level of central water tank 7 is normal, the status of the first methanol generator 33 and the second methanol generator 34 is checked. If the status of the first methanol generator 33 and the second methanol generator 34 is abnormal, the operation process is terminated by alarm, and troubleshooting and maintenance are carried out. If the status is normal, preheating is started.

[0037] During the system startup phase, the startup load is determined. If the load is high, the lithium battery pack 3 is prioritized to discharge to meet the instantaneous power demand. If the load is low, the first methanol generator 33 and the second methanol generator 34 are the main power supply equipment and simultaneously charge the lithium battery pack 3.

[0038] Once the hybrid power supply system is confirmed to be operating normally, during the startup phase, if the startup load is high, lithium battery pack 3 will prioritize discharging to meet the instantaneous high power demand, reducing the load on the first methanol generator 33 and the second methanol generator 34. Otherwise, the first methanol generator 33 and the second methanol generator 34 will be the main power supply equipment, simultaneously charging lithium battery pack 3 to increase its remaining power and ensure the system has sufficient emergency power and buffer capacity. After the system is running stably, the main controller will operate based on the remaining power of lithium battery pack 3, the operating load demand, the water level in the central water tank 7, and the carbon dioxide level in the carbon dioxide storage cylinder 16. The power supply strategy is determined by the first, second, third, and fourth priorities. If the remaining power of the lithium battery pack 3 is low, the first methanol generator 33 and the second methanol generator 34 will be used to supply power and charge the lithium battery pack 3. If the remaining power of the lithium battery pack 3 is high and the operating load demand is high, the auxiliary output power ratio of the lithium battery pack 3 will be increased. Furthermore, if the water level of the central water tank 7 is low at this time, the first methanol generator 33 and the second methanol generator 34 will be used to supply power. When all conditions are balanced, the main controller will regulate the first methanol generator 33, the second methanol generator 34 and the lithium battery pack 3 to supply power in a coordinated manner.

[0039] During stable operation, after all the above conditions are met, the main controller introduces the carbon dioxide level in the carbon dioxide storage cylinder 16 as the fourth priority to optimize the carbon cycle and reduce emissions. If the carbon dioxide level in the carbon dioxide storage cylinder 16 is lower than the high threshold, such as when the carbon dioxide level in the carbon dioxide storage cylinder 16 is lower than 90%, the hybrid power supply system does not take any additional management and continues the current operating mode. If the carbon dioxide level in the carbon dioxide storage cylinder 16 is high and about to be full, under the premise of not affecting the remaining power balance of the lithium battery pack 3, the working load demand and the water level safety of the central water tank 7, the output power of the first methanol generator 33 and the second methanol generator 34 is appropriately reduced to make its power response smoother, thereby slightly reducing peak emissions. Alternatively, the exhaust valve of the sixth fluid pipeline 22 is adjusted to directly discharge carbon dioxide to the external environment. It is strictly forbidden for the output power to fail to meet the load demand due to carbon dioxide management.

[0040] Reference Figure 7 The system also includes a waste gas separation process. The waste gas generated by the first methanol generator 33 and the second methanol generator 34 is treated by a condenser 12 and a gas-liquid separator 13. The separated gaseous carbon dioxide is collected and reprocessed into fuel methanol, while the liquid water is used to replenish the water in the central water tank 7, achieving resource recycling. Furthermore, the cooler 8 draws water from the central water tank 7 and cools it before transferring it to a cold storage bottle 9 for temporary storage. This storage is then transferred via an eighth fluid pipeline 29 to a cold plate liquid cooling system 27 for heat dissipation and temperature control of the first methanol generator 33, the second methanol generator 34, and the lithium battery pack 3 within the first methanol generator housing 2, the second methanol generator housing 36, and the lithium battery housing 37 under normal or high-temperature conditions. The heater 5 draws water from the central water tank 7 and heats it before transferring it to a heat flow pipeline 32 within the first methanol generator housing 2, the second methanol generator housing 36, and the lithium battery housing 37 for heating and temperature control of the first methanol generator 33, the second methanol generator 34, and the lithium battery pack 3 under low-temperature or start-up conditions. The entire system continuously optimizes energy distribution and equipment operating status through intelligent control and real-time monitoring, ensuring the stability and efficiency of power supply. It also includes maintenance and fault diagnosis functions to guarantee long-term stable operation. This intelligent power management and resource recycling process provides an efficient and environmentally friendly energy solution for industrial applications.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hybrid power supply system combining a methanol generator set and a lithium battery, characterized in that: Includes a base plate (1), on the surface of which are provided a box, a water circulation temperature control system (10), a waste gas separation system (14) and a carbon dioxide storage system (17); the box is provided with a methanol generator group and a lithium battery group (3), and an air-cooled unit system (4) is installed on one side of the box, and a cold plate liquid cooling system (27) is installed on the top. The methanol generator group includes at least two methanol generators, and each methanol generator is connected to the exhaust gas separation system (14) and the water circulation temperature control system (10) through a fluid pipeline. The water circulation temperature control system (10) is also connected to the lithium battery pack (3) through a fluid pipeline. The liquid output end of the waste gas separation system (14) is connected to the water circulation temperature control system (10) through a fluid pipeline, and the gas output end of the waste gas separation system (14) is connected to the carbon dioxide storage system (17) through a fluid pipeline. It also includes a main controller, which is electrically connected to the water circulation temperature control system (10), the waste gas separation system (14), the carbon dioxide storage system (17), the methanol generator group, the lithium battery pack (3), the air-cooled unit system (4), and the cold plate liquid cooling system (27).

2. The methanol generator group and lithium battery hybrid power supply system according to claim 1, characterized in that: The methanol generator group includes at least a first methanol generator (33) and a second methanol generator (34), and the methanol generator group and the lithium battery pack (3) work together to provide power. The lithium battery pack (3) is used to respond to instantaneous load changes, and the methanol generator group is used to provide stable power and charge the lithium battery pack (3).

3. The methanol generator group and lithium battery hybrid power supply system according to claim 1, characterized in that: The waste gas separation system (14) includes a condenser (12) and a gas-liquid separator (13). The condenser (12) and the gas-liquid separator (13) are connected by a fluid pipeline. The liquid output end of the gas-liquid separator (13) is connected to the water circulation temperature control system (10) through a fluid pipeline, and the gas output end is connected to the carbon dioxide storage system (17) through a fluid pipeline.

4. The methanol generator group and lithium battery hybrid power supply system according to claim 3, characterized in that: The water circulation temperature control system (10) includes a water storage shell frame (6), a central water tank (7), a cooler (8), a heater (5), and a cold water storage bottle (9). The central water tank (7) is connected to the liquid output end of the cooler (8), the heater (5), the cold water storage bottle (9), and the gas-liquid separator (13), respectively. The cooler (8) and the cold water storage bottle (9) are connected through a fluid pipeline. The cold water storage bottle (9) is connected to a cold plate liquid cooling system (27). The heater (5) is connected to a heat flow pipeline (32) inside the box through a fluid pipeline.

5. The methanol generator group and lithium battery hybrid power supply system according to claim 4, characterized in that: The cold plate liquid cooling system (27) includes a cold plate outer shell frame (24), a rectangular thin-layer cold plate (25), a fluid input pipeline (23) and a fluid output pipeline (26). The fluid input pipeline (23) is connected to the cold storage water bottle (9) through a fluid pipeline, and the fluid output pipeline (26) is connected to the central water tank (7) through a fluid pipeline. The rectangular thin-film cold plate (25) is provided in multiple sets, and at least two sets of rectangular thin-film cold plates (25) are evenly and vertically placed inside the cold plate shell frame (24). The rectangular thin-film cold plate (25) is hollow in whole, and the upper and lower ends of one side are respectively provided with perforated connectors for fluid transmission. The fluid input pipe (23) and the fluid output pipe (26) are both provided with tapered connecting pipes for connecting with the perforated connectors on the rectangular thin-film cold plate (25). The number of tapered connecting pipes is the same as the number of rectangular thin-film cold plates (25).

6. The methanol generator group and lithium battery hybrid power supply system according to claim 1, characterized in that: The carbon dioxide storage system (17) includes at least one carbon dioxide storage cylinder (16) for storing carbon dioxide and for subsequent preparation of methanol fuel, and the carbon dioxide storage cylinder (16) is detachably disposed inside the storage shell frame (15).

7. The methanol generator group and lithium battery hybrid power supply system according to claim 1, characterized in that: Each of the boxes has a glass fiber mounting layer on one side of its interior surface, and a temperature sensor is installed on the surface of the mounting layer. A water level sensor is installed in the central water tank (7) of the water circulation temperature control system (10), and a pressure sensor is installed in the carbon dioxide storage cylinder (16) of the carbon dioxide storage system (17).

8. The method for hybrid power supply of methanol generator group and lithium battery according to claim 1, characterized in that: The application of the methanol generator group and lithium battery hybrid power supply system according to any one of claims 1-7 includes the following steps: Step 1: Before starting the system, check the remaining power of the lithium battery pack (3), the water level of the central water tank (7), and the status of the methanol generator group; if the remaining power of the lithium battery pack (3) is lower than the safety threshold, start external charging; if the water level of the central water tank (7) is low, start external water replenishment; if the methanol generator is in an abnormal state, alarm and repair. Step 2: During the system startup phase, determine the startup load; if the load is high, the lithium battery pack (3) will be discharged first to meet the instantaneous power demand; if the load is low, the methanol generator group will be the main power supply equipment and will charge the lithium battery pack (3) at the same time. Step 3: During the stable operation phase of the system, the main controller prioritizes the remaining power of the lithium battery pack (3) as the first priority, the operating load demand as the second priority, the water level of the central water tank (7) as the third priority, and the carbon dioxide level of the carbon dioxide storage system (17) as the fourth priority, and adjusts the power supply mode accordingly. When the carbon dioxide content in the carbon dioxide storage cylinder (16) is high, the power of the methanol generator group is appropriately reduced only if it does not affect the first three priority targets. Otherwise, the exhaust valve of the carbon dioxide storage cylinder (16) is opened to release excess carbon dioxide. Step 4: During system operation, the exhaust gas separation system (14) continuously processes the combustion exhaust gas of the methanol generator group, recovers liquid water to the central water tank (7), and gaseous carbon dioxide to the carbon dioxide storage system (17); the temperature inside the box is controlled by the coordinated action of the cold plate liquid cooling system (27), the air cooling unit system (4), and the heater (5).

9. The method for hybrid power supply of methanol generator group and lithium battery according to claim 8, characterized in that: In step 3, if the remaining power of the lithium battery pack (3) is low, the methanol generator group will mainly supply power and charge the lithium battery pack (3); if the remaining power of the lithium battery pack (3) is high and the working load demand is high, the output power ratio of the lithium battery pack (3) will be increased; if the water level of the central water tank (7) is low, the methanol generator group will mainly supply power; when all conditions are balanced, the two will supply power together. In step 3, during the stable operation phase of the system, the actual output power of the methanol generator group and the lithium battery pack (3) is monitored in real time by a power sensor integrated in the power supply line; the lithium battery pack (3) is equipped with a power distribution module, which switches between power supply and charging modes according to the instructions of the main controller.

10. A method for hybrid power supply using a methanol generator group and a lithium battery according to claim 8, characterized in that: In step 4, the cold plate liquid cooling system (27) delivers coolant to the rectangular thin-layer cold plate (25) through the cold water storage bottle (9), absorbs heat, and then returns the water to the central water tank (7); in the low temperature environment, the heater (5) heats the water in the central water tank (7) and delivers it to the hot flow pipeline (32) to preheat the equipment inside the tank.

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