A lunar base energy storage system based on lunar soil-filled flywheel

Abstract

A lunar base energy storage system based on a lunar soil-filled flywheel relates to the field of space energy storage. The present invention is to solve the problem that chemical storage systems are limited by battery life and charge-discharge depth, and that electrical storage, heat storage, and flywheel energy storage systems are too heavy, resulting in high launch costs. Based on the in-situ manufacturing concept, a lunar base energy storage system based on a lunar soil-filled flywheel is designed, including multiple parallel energy storage flywheel groups, fuel cells, multiple parallel solar cell groups, and wires. The energy storage flywheel group and the fuel cell are located in a lunar crater. The multiple energy storage flywheel groups and fuel cells are connected to the multiple solar cell groups through wires. The energy storage flywheel group includes a foldable flywheel box that can be filled with lunar soil on site to achieve the counterweight of the flywheel body. The flywheel energy storage device can install and disassemble the flywheel unit according to the energy storage demand through the series / parallel arrangement of the flywheel energy storage unit to achieve the expansion and reduction of energy storage. The present invention is mainly used for nighttime energy storage in a lunar base.

Description

Technical Field

[0001] The present invention relates to the field of space energy storage, and in particular to a lunar base energy storage system based on a lunar soil-filled flywheel. Background Art

[0002] Building a lunar base and conducting in-depth lunar exploration are the inevitable trends in the development of my country's subsequent deep space exploration. The energy system is the basic condition for maintaining the normal operation of the lunar base. In various planning demonstrations, the energy system is also listed as an important part of the lunar base and a core key technology for the base design. The energy system of the lunar base must meet the following basic requirements: adapt to the lunar environment, operate stably for a long time, have high output power, and be clean and pollution-free. In the primary stage, the energy source of the lunar base is mainly solar energy. The common problem faced by the energy storage system is to solve the efficient storage of solar energy, which is also the key technology for the design of the lunar base energy system. According to the working principle of energy storage materials, the storage of solar energy in the lunar base is divided into four categories: electrical storage, thermal storage, chemical storage and mechanical storage. The primary lunar base does not have the ability to work at full load during the lunar night, but it still needs to maintain basic functions such as status monitoring, data management and communication. The electric power is at least 1.5kW, that is, the power demand of the lunar base during the lunar night is at least 500kWh. According to the current energy storage density of batteries or energy storage materials, storing 500kWh of electricity requires batteries or energy storage materials to weigh at least 3.5t, which is an unacceptable weight resource for the primary lunar base. Chemical energy storage is also faced with the problem of being unable to provide long-term and stable power output. Mechanical flywheel energy storage breaks through the above limitations and uses physical methods to achieve energy storage. Due to rapid charging and discharging, independent and stable energy output, high energy storage density, low operating loss, and less maintenance, flywheel technology is continuously used as an energy supply center in solar energy storage batteries for satellite devices and space stations. However, the launch cost of the flywheel mass block is high, and a single flywheel energy storage unit cannot meet the nighttime energy needs of the lunar base. Therefore, based on the in-situ manufacturing concept, it is very necessary to study a lunar base energy storage system based on a lunar soil-filled flywheel. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the chemical storage system used in the existing lunar base is often limited by battery life and charge and discharge depth, and the electrical storage, thermal storage and flywheel energy storage systems have the problem of excessive weight resulting in high launch costs, thereby providing a lunar base energy storage system based on a lunar soil-filled flywheel.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A lunar base energy storage system based on a lunar soil-filled flywheel comprises a plurality of parallel energy storage flywheel groups, fuel cells, a plurality of parallel solar cell groups and wires, wherein the energy storage flywheel groups and fuel cells are located in a lunar crater; the plurality of energy storage flywheel groups and fuel cells are connected to the plurality of solar cell groups through wires; the energy storage flywheel group comprises N energy storage units, a motor, a driving gear, a transmission gear, a driving shaft, an axial magnetic suspension base, an axial magnetic suspension body and a support frame; the axial magnetic suspension base is arranged at the middle position of the bottom of the support frame, and the bottom end of the driving shaft is inserted into the axial magnetic suspension base and can rotate. The top end of the driving shaft is inserted into the top end of the support frame and extends out; the transmission gear and the axial magnetic suspension body are sequentially mounted on the driving shaft from top to bottom, the axial magnetic suspension body and the axial magnetic suspension base are arranged opposite to each other and form an axial magnetic suspension bearing, the motor is installed in the support frame, and a driving gear is arranged at the end of the motor output shaft, and the driving gear is engaged with the transmission gear; the N groups of energy storage units are arranged side by side from top to bottom and connected by insertion, the energy storage unit at the bottom is inserted on the top of the support frame, and the top end of the driving shaft passes through the N groups of energy storage units in sequence and drives the rotation of the energy storage units.

[0006] Furthermore, each energy storage unit includes a flywheel support frame, two bearings and a filled flywheel, the two bearings are respectively inserted into the bottom and top of the flywheel support frame and arranged opposite to each other, the upper end of the driving shaft passes through the bearing at the bottom of the flywheel support frame and the bearing at the top of the flywheel support frame in sequence, and the filled flywheel is mounted on the driving shaft.

[0007] Furthermore, the active shaft includes a main transmission shaft and a multi-section extended transmission shaft, the number of the extended transmission shaft is N-1 sections, and in the N-1 groups of energy storage units counted from top to bottom, each group of energy storage units corresponds to a section of the extended transmission shaft; the bottom end of the main transmission shaft is inserted into the axial magnetic suspension base, the top end of the main transmission shaft is inserted into the bearing at the top of the flywheel support frame at the bottom and extends out, and the filling flywheel at the bottom is sleeved on the main transmission shaft; the bottom end of the extended transmission shaft is inserted into the bearing at the bottom of the flywheel support frame and extends out, the top end of the extended transmission shaft is inserted into the bearing at the top of the flywheel support frame and extends out, and the filling flywheel is sleeved on the extended transmission shaft; the top end of the main transmission shaft and the bottom end of the extended transmission shaft above it are inserted together; in the N-1 groups of energy storage units counted from top to bottom, in two adjacent groups of energy storage units, the top end of the extended transmission shaft at the bottom and the bottom end of the extended transmission shaft at the top are connected by insertion.

[0008] Furthermore, a cross keyway is provided at the top of the extension transmission shaft, and a cross key is provided at the bottom of the extension transmission shaft. The cross key at the bottom of the extension transmission shaft is used in conjunction with the cross keyway at the top of the adjacent extension transmission shaft; a cross keyway is provided at the top of the main transmission shaft, and is used in conjunction with the cross key at the bottom of the adjacent extension transmission shaft.

[0009] Furthermore, a plurality of flat keys are circumferentially spaced apart on the outer wall of the extended transmission shaft, the flat keys are long strip bosses, and the length direction of the flat keys is the same as the axial direction of the extended transmission shaft; a plurality of flat keys are arranged in the middle and upper sections of the main transmission shaft, the flat keys are long strip bosses, and the length direction of the flat keys is the same as the axial direction of the main transmission shaft.

[0010] Furthermore, a limit plate is mounted on the extended transmission shaft, the limit plate is located at the bottom end of the plurality of flat keys and is fixedly connected to the extended transmission shaft; a limit plate is also arranged at the bottom end of the plurality of flat keys on the main transmission shaft.

[0011] Furthermore, the axial magnetic suspension base is an electromagnet, and the axial magnetic suspension body is a permanent magnet.

[0012] Furthermore, the flywheel support frame includes four vertically arranged columns and two cross-shaped support frames, the two cross-shaped support frames are arranged relatively spaced apart from each other, and the two upper and lower opposite legs of the two cross-shaped support frames are fixedly connected by a column, a mounting hole is opened at the top of each column, and a mounting pin is inserted at the bottom of each column; two adjacent flywheel support frames are inserted together by the mounting pin on the upper flywheel support frame and the mounting hole on the lower flywheel support frame.

[0013] Furthermore, the filled flywheel includes an upper cover, a flywheel box and a lower cover. The flywheel box is a compressible and foldable cylindrical structure. The upper cover is installed above the flywheel box, and the lower cover is installed below the flywheel box. The upper cover and the lower cover enclose the flywheel box into a circular cavity structure with a through hole in the middle, and the cross-section of the through hole is a cross-shaped structure.

[0014] Furthermore, the upper cover plate and the lower cover plate are high-strength discs, and two lunar soil filling ports are opened on the upper cover plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The flywheel energy storage device of the present invention adopts a longitudinal unit distribution of flywheels, and realizes the expansion and compression of energy storage capacity through integrated series and parallel flywheel energy storage units. The flywheel units can be installed and removed or the flywheel groups can be increased or decreased according to the energy storage demand to realize the expansion and compression of energy storage, and the capacity of the energy storage system is flexible and changeable;

[0017] 2. The foldable flywheel box in the filling flywheel is in a folded state during transportation. After arriving at the installation site, lunar soil is filled into the foldable flywheel box through the lunar soil filling port to make it in an extended state. The use of local lunar soil solves the problem of high cost of launching the flywheel mass block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the energy storage flywheel group;

[0021] Figure 3 It is the axonometric view of the energy storage flywheel assembly;

[0022] Figure 4 It is a structural schematic diagram of an energy storage unit;

[0023] Figure 5 is a schematic diagram of the structure of the flywheel support frame;

[0024] Figure 6 It is a schematic diagram of the structure of the extended transmission shaft;

[0025] Figure 7 It is a structural schematic diagram of a filled flywheel;

[0026] Figure 8 It is a structural schematic diagram of a filled flywheel in a compressed state.

[0027] In the figure, 1-energy storage flywheel group; 2-fuel cell; 3-solar cell group; 4-conductor; 5-moon pit; 6-energy storage unit; 6-1-flywheel support frame; 6-1-1-column; 6-1-2-cross support frame; 6-1-3-mounting hole; 6-1-4-mounting pin; 6-2-bearing; 6-3-filled flywheel; 6-3-1-upper cover; 6-3-2-flywheel box; 6-3-3-lower cover ;6-3-4-through hole;6-3-5-lunar soil filling port;7-motor;8-driving gear;9-transmission gear;10-driving shaft;10-1-main transmission shaft;10-2-extension transmission shaft;10-2-1-cross keyway;10-2-2-cross key;10-2-3-flat key;10-2-4-limiting plate;11-axial magnetic suspension base;12-axial magnetic suspension body;13-support frame. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figures 1 to 8 As shown, the embodiment of the present application provides a lunar base energy storage system based on a lunar soil-filled flywheel, including multiple parallel energy storage flywheel groups 1, fuel cells 2, multiple parallel solar cell groups 3 and wires 4, wherein the energy storage flywheel groups 1 and fuel cells 2 are located in a preliminarily repaired circular lunar crater 5, the multiple energy storage flywheel groups 1 and fuel cells 2 are connected to multiple solar cell groups 3 outside the lunar crater 5 through wires 4, and the lunar base 15 is respectively connected to the multiple energy storage flywheel groups 1 and the multiple solar cell groups 3 through wires 4; the energy storage flywheel group 1 and the fuel cell 2 complement each other, with the energy storage flywheel group 1 as the main energy storage unit; during the day, the sun The energy battery group 3 supplies power to the lunar base 15. At night, the energy storage flywheel group 1 supplies power to the lunar base 15. The solar cell group 3 is the power source of the entire energy storage system. The solar cell group 3 uses solar panels to convert solar energy into electrical energy, so that the permanent magnet brushless DC motor drives the flywheel to accelerate rotation. The high-speed rotating flywheel converts the electrical energy into gravitational potential energy and kinetic energy and stores it. During the moon night, the flywheel rotor converts the gravitational potential energy and kinetic energy stored by the high-speed rotation into electrical energy and releases it. The flywheel continuously decelerates and releases energy continuously. The permanent magnet brushless DC motor that drives the flywheel to rotate at high speed runs as a generator to supply power to the lunar base 15.

[0032] The energy storage flywheel assembly 1 includes N groups of energy storage units 6, a motor 7, a driving gear 8, a transmission gear 9, a driving shaft 10, an axial magnetic suspension base 11, an axial magnetic suspension body 12, a support frame 13 and a bearing. The support frame 13 is a circular hollow base, and a cross-shaped skeleton is arranged above the circular ring. The edge of the support frame 13 has four support columns arranged at 90° intervals.

[0033] The axial magnetic suspension base 11 is arranged at the middle position of the bottom of the support frame 13, the bearing is inserted in the middle position of the cross-shaped frame at the top of the support frame 13, the bottom end of the driving shaft 10 is inserted in the axial magnetic suspension base 11, and the top end of the driving shaft 10 is inserted in the bearing at the top end of the support frame 13 and extends out; the transmission gear 9 and the axial magnetic suspension body 12 are sequentially mounted on the driving shaft 10 from top to bottom, the axial magnetic suspension body 12 and the axial magnetic suspension base 11 are arranged opposite to each other and form an axial magnetic suspension bearing, the motor 7 is installed in the support frame 13, and the end of the output shaft of the motor 7 is provided with a driving gear 8, and the driving gear 8 is engaged with the transmission gear 9; the solar cell group 3 supplies power to the motor 7, the output shaft of the motor 7 drives the driving gear 8 to rotate, the driving gear 8 drives the transmission gear 9 engaged therewith to rotate, and further drives the driving shaft 10 to rotate, and the driving shaft 10 transfers kinetic energy to the energy storage unit 6; the fuel cell 2 supplies power to the axial magnetic suspension base 11;

[0034] The N groups of energy storage units 6 are arranged side by side from top to bottom and connected by plug-in. The energy storage unit 6 at the bottom is plugged on the top of the support frame 13. The top of the driving shaft 10 passes through the N groups of energy storage units 6 in sequence and drives the rotation of the energy storage units 6. As the number of energy storage units 6 increases, the energy storage capacity of the energy storage flywheel group 1 increases.

[0035] In this embodiment, N≥1.

[0036] In a possible implementation scheme, each group of energy storage units 6 includes a flywheel support frame 6-1, two bearings 6-2 and a filling flywheel 6-3, wherein the two bearings 6-2 are respectively inserted at the bottom and the top of the flywheel support frame 6-1 and are arranged opposite to each other, and the upper end of the driving shaft 10 passes through the bearing 6-2 at the bottom of the flywheel support frame 6-1 and the bearing 6-2 at the top of the flywheel support frame 6-1 in sequence, and the filling flywheel 6-3 is sleeved on the driving shaft 10;

[0037] In this embodiment, the motor 7 drives the driving shaft 10 to rotate, thereby driving the filling flywheel 6 - 3 connected thereto to rotate, thereby realizing energy storage of the filling flywheel 6 - 3.

[0038] In a possible implementation scheme, the driving shaft 10 is a segmented structure, including a main transmission shaft 10-1 and a multi-section extended transmission shaft 10-2, the number of the extended transmission shaft 10-2 is N-1 sections, and in the N-1 groups of energy storage units 6 counted from top to bottom, each group of energy storage units 6 corresponds to one section of the extended transmission shaft 10-2, that is, except for the bottom energy storage unit 6, no extended transmission shaft 10-2 is provided, and the remaining energy storage units 6 are provided with one section of the extended transmission shaft 10-2; the bottom end of the main transmission shaft 10-1 is inserted into the axial magnetic suspension base 11, and the top end of the main transmission shaft 10-1 is inserted into the bearing 6-2 at the top of the flywheel support frame 6-1 at the bottom and extends out, and the filling flywheel 6-3 at the bottom is sleeved on the main transmission shaft 10-1;

[0039] The bottom end of the extended transmission shaft 10-2 is inserted into the bearing 6-2 at the bottom of the flywheel support frame 6-1 and extends out, the top end of the extended transmission shaft 10-2 is inserted into the bearing 6-2 at the top of the flywheel support frame 6-1 and extends out, and the filling flywheel 6-3 is sleeved on the extended transmission shaft 10-2;

[0040] The top end of the main transmission shaft 10-1 and the bottom end of the extended transmission shaft 10-2 above it are plugged together; in the N-1 groups of energy storage units 6 counted from top to bottom, in two adjacent groups of energy storage units 6, the top end of the extended transmission shaft 10-2 below and the bottom end of the extended transmission shaft 10-2 above are connected by plug-in.

[0041] In this embodiment, when the number of energy storage units is only one group, the driving shaft is the main transmission shaft, and the filling flywheel in the energy storage unit can be driven to rotate by one driving shaft. When the number of energy storage units is greater than one group, the driving shaft is set to a segmented structure to facilitate the disassembly of the energy storage units, that is, the energy storage units can be set to one group or multiple groups.

[0042] In a possible implementation scheme, a cross keyway 10-2-1 is provided at the top end of the extension transmission shaft 10-2, and a cross key 10-2-2 is provided at the bottom end of the extension transmission shaft 10-2. The cross key 10-2-2 at the bottom end of the extension transmission shaft 10-2 is used in conjunction with the cross keyway 10-2-1 at the top end of the adjacent extension transmission shaft 10-2; a cross keyway is provided at the top end of the main transmission shaft 10-1, and is used in conjunction with the cross key 10-2-2 at the bottom end of the adjacent extension transmission shaft 10-2.

[0043] In this embodiment, the main transmission shaft 10-1 and the extension transmission shaft 10-2 and the two adjacent extension transmission shafts 10-2 are connected by a cross key and a cross keyway, which ensures the stability of the connection and facilitates disassembly;

[0044] In this embodiment, a limiting sleeve is mounted on the connecting end between the main transmission shaft 10-1 and the extension transmission shaft 10-2 and on the connecting end between two adjacent extension transmission shafts 10-2 to prevent the main transmission shaft 10-1 and the extension transmission shaft 10-2 or between two adjacent extension transmission shafts 10-2 from being dislocated or misaligned.

[0045] In a possible implementation scheme, a plurality of flat keys 10-2-3 are circumferentially spaced apart on the outer wall of the extended transmission shaft 10-2, the flat keys 10-2-3 are long strip bosses, and the length direction of the flat keys 10-2-3 is the same as the axial direction of the extended transmission shaft 10-2; the flat keys 10-2-3 are preferably four, and the four flat keys are arranged at 90° intervals along the circumference; a plurality of flat keys are arranged in the middle and upper sections of the main transmission shaft 10-1, the flat keys are long strip bosses, and the length direction of the flat keys is the same as the axial direction of the main transmission shaft 10-1, the flat keys are preferably four, and the four flat keys are arranged at 90° intervals along the circumference.

[0046] In this embodiment, a flat key is used on the main transmission shaft 10-1 and the extended transmission shaft 10-2 to connect and fix the filling flywheel 6-3, which facilitates the installation of the filling flywheel 6-3 and does not cause movement between the filling flywheel 6-3 and the main transmission shaft 10-1 or the extended transmission shaft 10-2, thereby ensuring the consistency of rotation between the filling flywheel 6-3 and the main transmission shaft 10-1 or the extended transmission shaft 10-2.

[0047] In a possible implementation scheme, a limit plate 10-2-4 is mounted on the extension transmission shaft 10-2, and the limit plate 10-2-4 is fixed on the extension transmission shaft 10-2 and is located at the bottom end of multiple flat keys 10-2-3; a limit plate is also provided at the bottom end of multiple flat keys on the main transmission shaft 10-1.

[0048] In this embodiment, the limiting plate 10-2-4 is provided to support the filling flywheel 6-3.

[0049] In a possible implementation, the axial magnetic suspension base 11 is an electromagnet, and the axial magnetic suspension body 12 is a permanent magnet;

[0050] In this embodiment, the axial magnetic levitation base 11 and the axial magnetic levitation body 12 together constitute an axial magnetic levitation bearing. The supporting force of the axial magnetic levitation bearing can be controlled by the magnetic field size of the axial magnetic levitation base 11. When the number of energy storage units in the energy storage flywheel group is increased, the current size provided by the fuel cell 2 to the axial magnetic levitation base 11 can be increased, thereby controlling the magnetic field of the axial magnetic levitation base 11 and improving the supporting force of the axial magnetic levitation bearing.

[0051] In a possible implementation scheme, the flywheel support frame 6-1 includes four vertically arranged columns 6-1-1 and two cross-shaped support frames 6-1-2, the two cross-shaped support frames 6-1-2 are arranged relatively spaced apart from each other, and the two upper and lower opposite legs of the two cross-shaped support frames 6-1-2 are fixedly connected by a column 6-1-1, the legs of the cross-shaped support frame 6-1-2 at the bottom are connected to the bottom end of the column 6-1-1, and the legs of the cross-shaped support frame 6-1-2 at the top are connected to the middle upper position of the column 6-1-1; the connection point of two adjacent extended transmission shafts 10-2 is in the space formed between the two adjacent flywheel support frames 6-1;

[0052] A mounting hole 6-1-3 is formed at the top of each column 6-1-1, and a mounting pin 6-1-4 is inserted at the bottom of each column 6-1-1; the diameter of the mounting hole 6-1-3 is slightly larger than the outer diameter of the mounting pin 6-1-4;

[0053] Two adjacent flywheel support frames 6-1 are inserted together through a mounting pin 6-1-4 on the upper flywheel support frame 6-1 and a mounting hole 6-1-3 on the lower flywheel support frame 6-1;

[0054] The top ends of the four support columns of the support frame 13 are provided with mounting holes, and the flywheel support frame 6-1 above them is inserted into the support frame 13 through the mounting pins 6-1-4 at the bottom ends.

[0055] In a possible implementation scheme, the filled flywheel 6-3 includes an upper cover plate 6-3-1, a flywheel box 6-3-2 and a lower cover plate 6-3-3, the flywheel box 6-3-2 is a compressible and foldable cylindrical structure, the upper cover plate 6-3-1 is installed above the flywheel box 6-3-2, and the lower cover plate 6-3-3 is installed below the flywheel box 6-3-2, the upper cover plate 6-3-1 and the lower cover plate 6-3-3 close the flywheel box 6-3-2 into a circular cavity structure with a through hole 6-3-4 in the middle, and the cross-section of the through hole 6-3-4 is a cross-shaped structure.

[0056] In this embodiment, the filling flywheel 6-3 is set to a circular cavity structure, and is in a compressible and foldable form, so that the flywheel box is in a folded state during transportation. After arriving at the installation site, the foldable flywheel box is filled with lunar soil to make it in an extended state. The local use of lunar soil solves the problem of high cost of launching the flywheel mass block.

[0057] In the present embodiment, the shape of the through hole 6-3-4 is set to a cross-shaped structure in order to cooperate with the flat keys on the main drive shaft and the extended drive shaft. When the filling flywheel 6-3 is mounted on the extended drive shaft 10-2, the extended drive shaft 10-2 passes through the cross-shaped hole at the center of the upper cover plate 6-3-1 and the lower cover plate 6-3-3 until the lower cover plate 6-3-3 of the filling flywheel 6-3 contacts the upper plate surface of the limit plate 10-2-4, thereby completing the fixation of the filling flywheel 6-3. The synchronous rotation of the extended drive shaft 10-2 and the filling flywheel 6-3 is achieved by the engagement of multiple flat keys 10-2-3 with the cross-shaped holes at the center of the upper cover plate 6-3-1 and the lower cover plate 6-3-3.

[0058] In a possible implementation scheme, the upper cover plate 6-3-1 and the lower cover plate 6-3-3 are high-strength discs, and two lunar soil filling ports 6-3-5 are opened on the upper cover plate 6-3-1.

[0059] Working principle of the present invention:

[0060] The motor 7 is connected to the solar cell group 3 through the wire 4. When storing energy, the wire 4 inputs electric energy inward, and the output shaft of the motor 7 drives the driving gear 8 to rotate, and the driving gear 8 drives the transmission gear 9 engaged with it to rotate, further driving the main transmission shaft 10-1 and the extended transmission shaft 10-2 plugged into the main transmission shaft 10-1 to rotate, and the main transmission shaft 10-1 and the extended transmission shaft 10-2 drive the filling flywheel 6-3 to rotate to complete energy storage. When discharging energy, the filling flywheel 6-3 drives the main transmission shaft 10-1 and the extended transmission shaft 10-2 to rotate, and the main transmission shaft 10-1 drives the transmission gear 9 and the driving gear 8 to rotate, further driving the motor 7 to complete discharge and output electric energy through the wire 4.

[0061] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A lunar base energy storage system based on a lunar soil-filled flywheel, characterized in that: The invention comprises a plurality of parallel energy storage flywheel groups (1), fuel cells (2), a plurality of parallel solar cell groups (3) and wires (4), wherein the energy storage flywheel groups (1) and fuel cells (2) are located in a lunar crater (5); the plurality of energy storage flywheel groups (1) and fuel cells (2) are connected to the plurality of solar cell groups (3) via wires (4); The energy storage flywheel assembly (1) comprises N groups of energy storage units (6), a motor (7), a driving gear (8), a transmission gear (9), a driving shaft (10), an axial magnetic suspension base (11), an axial magnetic suspension body (12) and a support frame (13); the axial magnetic suspension base (11) is arranged at the middle position of the bottom of the support frame (13); the bottom end of the driving shaft (10) is inserted into the axial magnetic suspension base (11) and is rotatable; the top end of the driving shaft (10) is inserted into the top end of the support frame (13) and extends out; the transmission gear (9) and the axial magnetic suspension body (12) are sequentially mounted on the driving shaft (10) from top to bottom; the axial magnetic suspension body (12) and the axial magnetic suspension base (11) are arranged opposite to each other and form an axial magnetic suspension bearing; the motor (7) is installed in the support frame (13); the end of the output shaft of the motor (7) is provided with a driving gear (8); the driving gear (8) is engaged with the transmission gear (9); The N groups of energy storage units (6) are arranged side by side from top to bottom and connected by plug-in. The energy storage unit (6) at the bottom is plug-in mounted above the support frame (13). The top end of the driving shaft (10) passes through the N groups of energy storage units (6) in sequence and drives the energy storage units (6) to rotate.

2. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 1, characterized in that: Each group of energy storage units (6) comprises a flywheel support frame (6-1), two bearings (6-2) and a filling flywheel (6-3); the two bearings (6-2) are respectively inserted into the bottom and top of the flywheel support frame (6-1) and arranged opposite to each other; the upper end of the driving shaft (10) passes through the bearing (6-2) at the bottom of the flywheel support frame (6-1) and the bearing (6-2) at the top of the flywheel support frame (6-1) in sequence; and the filling flywheel (6-3) is sleeved on the driving shaft (10).

3. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 2 is characterized in that: The driving shaft (10) comprises a main transmission shaft (10-1) and a plurality of extension transmission shafts (10-2), wherein the number of the extension transmission shafts (10-2) is N-1 sections, and each group of energy storage units (6) corresponds to one section of the extension transmission shaft (10-2) in the N-1 groups of energy storage units (6) counted from top to bottom. The bottom end of the main transmission shaft (10-1) is inserted into the axial magnetic suspension base (11), the top end of the main transmission shaft (10-1) is inserted into the bearing (6-2) at the top of the flywheel support frame (6-1) at the bottom and extends out, and the filling flywheel (6-3) at the bottom is sleeved on the main transmission shaft (10-1); The bottom end of the extended transmission shaft (10-2) is inserted into the bearing (6-2) at the bottom of the flywheel support frame (6-1) and extends out, the top end of the extended transmission shaft (10-2) is inserted into the bearing (6-2) at the top of the flywheel support frame (6-1) and extends out, and the filling flywheel (6-3) is sleeved on the extended transmission shaft (10-2); The top end of the main transmission shaft (10-1) and the bottom end of the extension transmission shaft (10-2) above it are inserted together; in the N-1 groups of energy storage units (6) counted from top to bottom, in two adjacent groups of energy storage units (6), the top end of the extension transmission shaft (10-2) located below and the bottom end of the extension transmission shaft (10-2) located above are connected by insertion.

4. A lunar base energy storage system based on a lunar soil-filled flywheel according to claim 3, characterized in that: The top end of the extension transmission shaft (10-2) is provided with a cross keyway (10-2-1), the bottom end of the extension transmission shaft (10-2) is provided with a cross key (10-2-2), and the cross key (10-2-2) at the bottom end of the extension transmission shaft (10-2) is used in conjunction with the cross keyway (10-2-1) at the top end of the adjacent extension transmission shaft (10-2); the top end of the main transmission shaft (10-1) is provided with a cross keyway, and is used in conjunction with the cross key (10-2-2) at the bottom end of the adjacent extension transmission shaft (10-2).

5. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 4, characterized in that: A plurality of flat keys (10-2-3) are arranged at intervals in the circumferential direction on the outer wall of the extended transmission shaft (10-2), the flat keys (10-2-3) are long strip bosses, and the length direction of the flat keys (10-2-3) is the same as the axial direction of the extended transmission shaft (10-2); a plurality of flat keys are arranged in the middle and upper section of the main transmission shaft (10-1), the flat keys are long strip bosses, and the length direction of the flat keys is the same as the axial direction of the main transmission shaft (10-1).

6. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 5, characterized in that: The extended transmission shaft (10-2) is provided with a limit plate (10-2-4), the limit plate (10-2-4) is located at the bottom end of the plurality of flat keys (10-2-3) and is fixedly connected to the extended transmission shaft (10-2); a limit plate is also provided at the bottom end of the plurality of flat keys on the main transmission shaft (10-1).

7. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 6, characterized in that: The axial magnetic suspension base (11) is an electromagnet, and the axial magnetic suspension body (12) is a permanent magnet.

8. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 7 is characterized in that: The flywheel support frame (6-1) comprises four vertically arranged columns (6-1-1) and two cross-shaped support frames (6-1-2), the two cross-shaped support frames (6-1-2) are arranged with a relative spacing up and down, and two upper and lower opposite legs of the two cross-shaped support frames (6-1-2) are fixedly connected by a column (6-1-1), a mounting hole (6-1-3) is opened at the top of each column (6-1-1), and a mounting pin (6-1-4) is inserted at the bottom of each column (6-1-1); Two adjacent flywheel support frames (6-1) are inserted together through a mounting pin (6-1-4) on the upper flywheel support frame (6-1) and a mounting hole (6-1-3) on the lower flywheel support frame (6-1).

9. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 8, characterized in that: The filling flywheel (6-3) comprises an upper cover plate (6-3-1), a flywheel box (6-3-2) and a lower cover plate (6-3-3); the flywheel box (6-3-2) is a compressible and foldable cylindrical structure; the upper cover plate (6-3-1) is installed above the flywheel box (6-3-2); the lower cover plate (6-3-3) is installed below the flywheel box (6-3-2); the upper cover plate (6-3-1) and the lower cover plate (6-3-3) enclose the flywheel box (6-3-2) into a circular cavity structure with a through hole (6-3-4) in the middle; the cross section of the through hole (6-3-4) is a cross-shaped structure.

10. The lunar base energy storage system based on a lunar soil-filled flywheel according to claim 9, characterized in that: The upper cover plate (6-3-1) and the lower cover plate (6-3-3) are high-strength discs, and two lunar soil filling ports (6-3-5) are opened on the upper cover plate (6-3-1).

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