Tapered combination bearing motor flywheel integrated energy storage system

Abstract

The utility model discloses a conical combined bearing motor flywheel integration energy storage system relates to the technical field of electric energy storage. Including: shell subassembly and motor component, motor component includes stator, flywheel rotor, two bearings, two first conical magnetic parts and two second conical magnetic parts, shell subassembly includes casing, and with the upper cover and lower cover of casing is connected, two bearings are fixed in the upper cover and lower cover respectively, flywheel rotor is rotatably connected with bearing, and stator surrounds flywheel rotor, two first conical magnetic parts are fixed in the upper cover and lower cover respectively, two second conical magnetic parts are fixed on the upper conical surface and lower conical surface of flywheel rotor respectively, and flywheel rotor drives second conical magnetic part high -speed operation, and second conical magnetic part and first conical magnetic part repel each other and suspend to flywheel rotor, reduce the pressure and friction force of flywheel rotor to bearing, and the shape of first conical magnetic part and second conical magnetic part is conical, makes flywheel rotor rotation automatic centering.

Description

Technical Field

[0001] This utility model relates to the field of electrical energy storage technology, and in particular to an integrated energy storage system for a conical combined bearing motor flywheel. Background Technology

[0002] In recent years, electric-powered robots, drones, ships, and vehicles have developed rapidly. However, the energy density of chemical batteries that provide power is low (300Wh / kg), and they are heavy and bulky, which seriously affects the range of electric robots, drones, ships, and vehicles. Moreover, the production and recycling of chemical batteries cause a lot of pollution. Flywheel energy storage provides a solution to avoid the above-mentioned shortcomings of chemical energy storage.

[0003] Flywheel energy storage technology can be traced back to the 19th century and is a purely physical energy storage method based on the principle of rotational inertia. However, the high-speed operation of flywheel energy storage leads to insufficient material strength, and the vacuum pumping and electromagnetic levitation technologies used to reduce wind wear are complex and extremely costly.

[0004] Current integrated energy storage systems using tapered combined bearing motors and flywheels employing air-bearing and magnetic levitation bearings suffer from the following drawbacks: The bearing body is typically cylindrical, with the bearing shaft inserted into the inner bore, resulting in a limited force-bearing surface and making it unsuitable for high-speed, heavy-load flywheel rotors. Cylindrical bearings only bear radial forces, lacking axial forces and, moreover, equal-pressure tilting centripetal forces. Consequently, the rotor cannot automatically align axially. Furthermore, they lack the ability to rigidly resist and correct rotor vibrations and swaying.

[0005] Therefore, it is necessary to provide an integrated energy storage system for a motor-flywheel using a conical combined bearing, aiming to address the shortcomings of current flywheel energy storage systems using air-bearing and magnetic levitation bearings: cylindrical bearings have limited force-bearing surfaces, making them unsuitable for high-speed, heavy-load flywheels / rotors. Cylindrical bearings only bear radial forces, lacking axial forces and, moreover, equal-pressure tilting centripetal forces. Consequently, the rotor cannot automatically center itself. Furthermore, there is a lack of technical means to rigidly resist and correct the eccentric forces that occur when the rotor vibrates and sways. Utility Model Content

[0006] This utility model provides an integrated energy storage system for a conical combined bearing motor-flywheel, comprising a housing assembly and a motor assembly. The motor assembly includes a stator, a flywheel rotor, two bearings, two first conical magnetic components, and two second conical magnetic components. The housing assembly includes a housing, an upper cover, and a lower cover connected to the housing. The upper cover, the lower cover, and the housing together form an accommodating space. The two bearings are respectively fixed to the upper cover and the lower cover, and the flywheel rotor is disposed within the accommodating space. The stator is rotatably connected to the bearing, and radially surrounds the flywheel rotor. When energized, it generates a rotating magnetic force to drive the flywheel rotor to rotate. Two first conical magnetic elements are fixed to the upper cover and the lower cover, respectively, and surround the two bearings. Two second conical magnetic elements are fixed to the upper conical surface and the lower conical surface of the flywheel rotor, respectively, and are arranged in a one-to-one correspondence with the first conical magnetic elements. The first conical magnetic elements and the second conical magnetic elements are like poles and repel each other, and are used to generate magnetic levitation clamping force and automatic centering for the flywheel rotor.

[0007] In one embodiment, a gap exists between the first conical magnetic element and the second conical magnetic element.

[0008] In one embodiment, the motor assembly further includes an air-bearing gap foil structure, the air-bearing gap foil structure being fixed to one side of the first conical magnetic element opposite to the second conical magnetic element, or the air-bearing gap foil structure being fixed to one side of the second conical magnetic element opposite to the first conical magnetic element.

[0009] In one embodiment, the bearing is a ceramic bearing, a plastic bearing, a ball bearing, a needle roller bearing, an angular bearing, a deep groove bearing, or a sliding bearing.

[0010] In one embodiment, the flywheel rotor includes a body and a magnet surrounding the body. The stator is energized to generate a rotating magnetic field, and the magnet drives the body to rotate under the action of the rotating magnetic field.

[0011] In one embodiment, the magnet is surrounded by carbon fiber and used to strengthen the flywheel rotor.

[0012] In one embodiment, the stator includes an iron core and a winding surrounding the iron core. The iron core is a structural component made of amorphous soft magnetic material, and the winding is a hollow cup winding or an iron core winding wound with graphene high-conductivity copper wire or enameled wire.

[0013] In one embodiment, the motor assembly further includes a rotating shaft, through which the flywheel rotor is rotatably connected to the bearing.

[0014] In one embodiment, the shell assembly is a structural component made of magnesium, aluminum alloy, or plastic.

[0015] In one embodiment, the tapered combined bearing motor flywheel integrated energy storage system further includes a housing, a DC input line, a circuit board, and three-phase output lines. The housing is fixed to the housing assembly and has an installation space. The circuit board is fixed within the installation space. The DC input line is electrically connected to the circuit board, and the circuit board is electrically connected to the stator through the three-phase output lines. The heat-generating components of the circuit board are attached to the outer casing with thermally conductive silicone grease, and the outer surface of the outer casing has multiple heat dissipation fins.

[0016] Implementing the embodiments of this utility model will have the following beneficial effects: The integrated energy storage system of the conical combined bearing motor flywheel of this invention features two bearings fixed to the upper and lower covers, respectively. The flywheel rotor is housed within the accommodating space and rotatably connected to the bearings. The stator surrounds the flywheel rotor and generates a rotating magnetic force to drive its rotation when energized. Two first conical magnetic components are fixed to the upper and lower covers, respectively, and surround the two bearings. Two second conical magnetic components are fixed to the upper and lower surfaces of the flywheel rotor, respectively, and are arranged in a one-to-one correspondence with the first conical magnetic components. The first and second conical magnetic components, with their like poles repelling each other, generate a magnetic levitation clamping force and automatic centering for the flywheel rotor. When the flywheel rotor drives the second conical magnetic components at high speed, the repulsion between the like poles of the second and first conical magnetic components levitates the flywheel rotor, reducing the pressure and friction of the flywheel rotor on the bearings. Furthermore, the conical shape of the first and second conical magnetic components ensures automatic centering of the flywheel rotor during rotation. This integrated energy storage system of the conical combined bearing motor flywheel has a simple structure and is convenient to manufacture, install, use, and maintain. The integrated energy storage system of the conical combined bearing motor flywheel has minimal wind wear. When operating for a short period of time or in conjunction with a hybrid system, the vacuum pumping device can be eliminated, reducing the cost and energy consumption of the system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] in: Figure 1 This is an isometric schematic diagram of an integrated energy storage system for a conical combined bearing motor flywheel in one embodiment.

[0019] Figure 2 for Figure 1 The side view of the tapered combined bearing motor flywheel integrated energy storage system shown.

[0020] Figure 3 for Figure 2 A cross-sectional view of the first embodiment of the tapered combined bearing motor flywheel integrated energy storage system shown in the AA direction.

[0021] Figure 4 for Figure 2 A cross-sectional view of the second embodiment of the tapered combined bearing motor flywheel integrated energy storage system shown in the AA direction.

[0022] Figure 5 for Figure 2 The cross-sectional view of the third embodiment of the tapered combined bearing motor flywheel integrated energy storage system shown in the AA direction.

[0023] Figure 6 This is a block diagram of the control circuit board.

[0024] Figure label: 1. Shell assembly; 11. Shell; 12. Top cover; 13. Bottom cover; 2. Motor assembly; 21. Stator; 211. Iron core; 212. Winding; 22. Flywheel rotor; 221. Body; 222. Magnet; 23. Bearing; 24. First conical magnetic component; 25. Second conical magnetic component; 26. Air-bearing gap foil structure; 27. Rotating shaft; 3. Housing; 4. DC input line; 5. Circuit board; 100, Accommodation space; 200, Gap; 300, Installation space. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0030] Now combined Figures 1 to 4 This invention provides an explanation of the integrated energy storage system for a conical combined bearing motor flywheel.

[0031] The integrated energy storage system of a conical combined bearing motor flywheel includes a housing assembly 1 and a motor assembly 2. The motor assembly 2 includes a stator 21, a flywheel rotor 22, two bearings 23, two first conical magnetic components 24, and two second conical magnetic components 25. The housing assembly 1 includes a housing 11, and an upper cover 12 and a lower cover 13 connected to the housing 11. The upper cover 12, the lower cover 13, and the housing 11 enclose a receiving space 100. The two bearings 23 are respectively fixed to the upper cover 12 and the lower cover 13. The flywheel rotor 22 is disposed within the receiving space 100 and connected to the bearings. The stator 21 is radially surrounded by the flywheel rotor 22 and generates a rotating magnetic force to drive the flywheel rotor 22 to rotate when energized. Two first conical magnetic elements 24 are fixed to the upper cover 12 and the lower cover 13 respectively and surround the two bearings 23 respectively. Two second conical magnetic elements 25 are fixed to the upper conical surface and the lower conical surface of the flywheel rotor 22 respectively and are arranged in a one-to-one correspondence with the first conical magnetic elements 24. The first conical magnetic elements 24 and the second conical magnetic elements 25 are like poles and repel each other, and are used to generate magnetic levitation clamping force and automatic centering for the flywheel rotor 22.

[0032] Specifically, shell assembly 1 is a structural component made of magnesium, aluminum alloy, or plastic. This reduces weight while ensuring structural strength.

[0033] Understandably, in this integrated energy storage system of a conical combined bearing motor flywheel, the two bearings 23 are fixed to the upper cover 12 and the lower cover 13, respectively. The flywheel rotor 22 is disposed within the accommodating space 100 and rotatably connected to the bearings 23. The stator 21 radially surrounds the flywheel rotor 22 and generates a rotating magnetic force to drive the flywheel rotor 22 to rotate after being energized. Two first conical magnetic components 24 are fixed to the upper cover 12 and the lower cover 13, respectively, and surround the two bearings 23. Two second conical magnetic components 25 are fixed to the upper and lower conical surfaces of the flywheel rotor 22, respectively, and are connected to the bearings 23. The first conical magnetic element 24 is arranged in a one-to-one correspondence with the second conical magnetic element 25. The first conical magnetic element 24 and the second conical magnetic element 25, being of the same pole, repel each other and are used to generate magnetic levitation clamping force and automatic centering for the flywheel rotor 22. When the flywheel rotor 22 drives the second conical magnetic element 25 at high speed, the flywheel rotor 22 is suspended due to the repulsion between the second conical magnetic element 25 and the first conical magnetic element 24, reducing the pressure and friction of the flywheel rotor 22 on the bearing 23. Furthermore, the conical shape of the first conical magnetic element 24 and the second conical magnetic element 25 ensures automatic centering of the flywheel rotor 22 during rotation. This conical combined bearing motor-flywheel integrated energy storage system has a simple structure and is convenient to manufacture, install, use, and maintain. This conical combined bearing motor-flywheel integrated energy storage system exhibits minimal wind wear. During short-term operation or operation in conjunction with a hybrid system, a vacuum pump can be omitted, reducing the system's cost and energy consumption.

[0034] It should be noted that the bearing 23 rigidly limits the position and clearance of the flywheel rotor 22 for normal rotation. The opposing surfaces of the first conical magnetic element 24 and the second conical magnetic element 25 are of the same pole, for example, N-N poles opposite or SS poles opposite. The first conical magnetic element 24 and the second conical magnetic element 25 remain concentric, so that a magnetic levitation clamping force can be generated on the flywheel rotor 22 to reduce the pressure and friction on the bearing 23.

[0035] It should be added that, such as Figure 3 As shown, the openings of the first conical magnetic element 24 and the second conical magnetic element 25 face outwards. Figure 4 As shown, the openings of the first conical magnetic element 24 and the second conical magnetic element 25 face inward.

[0036] In one specific implementation, such as Figure 5As shown, the integrated energy storage system of conical combined bearing motor flywheel includes: a housing assembly 1 and a motor assembly 2. The motor assembly 2 includes a stator 21, a flywheel rotor 22, two bearings 23, two first conical magnetic components 24, and two second conical magnetic components 25. The housing assembly 1 includes a housing 11, and an upper cover 12 and a lower cover 13 connected to the housing 11. The upper cover 12, the lower cover 13, and the housing 11 enclose a receiving space 100. The two bearings 23 are respectively fixed to the upper cover 12 and the lower cover 13. The flywheel rotor 22 is disposed within the receiving space 100 and connected to the shaft. The stator 21 is rotatably connected to the flywheel rotor 22 and faces the flywheel rotor 22 axially. When energized, it generates a rotating magnetic force to drive the flywheel rotor 22 to rotate. Two first conical magnetic elements 24 are fixed to the inner conical sidewalls of the upper cover 12 and the lower cover 13, respectively, and surround the flywheel rotor 22. Two second conical magnetic elements 25 are fixed to the outer conical sidewalls of the flywheel rotor 22, and are arranged in a one-to-one correspondence with the first conical magnetic elements 24. The first conical magnetic elements 24 and the second conical magnetic elements 25 are like poles and repel each other, and are used to generate magnetic levitation clamping force and automatic centering for the flywheel rotor 22.

[0037] In this embodiment, there is a gap 200 between the first conical magnetic component 24 and the second conical magnetic component 25. This avoids friction between the first conical magnetic component 24 and the second conical magnetic component 25, allowing them to repel each other with their like poles, thus generating a magnetic levitation clamping force on the flywheel rotor 22.

[0038] Furthermore, the motor assembly 2 also includes an air-bearing gap foil structure 26, which is fixed to one side of the first conical magnetic member 24 opposite to the second conical magnetic member 25, or the air-bearing gap foil structure 26 is fixed to one side of the second conical magnetic member 25 opposite to the first conical magnetic member 24. When the flywheel rotor 22 is running at high speed, air will form a high-pressure air film gap on the side of the air-bearing gap foil structure 26 relative to the gap 200 where the air-bearing gap foil structure 26 is not fixed. The air-bearing gap foil structure 26 can further generate an air-bearing clamping force on the flywheel rotor 22, thereby further reducing the pressure and friction of the flywheel rotor 22 on the bearing 23.

[0039] When the flywheel rotor 22 is subjected to vibration or insufficient low-speed air buoyancy, the bearing 23 will rigidly support the flywheel rotor 22 to prevent the first conical magnetic component 24 and the second conical magnetic component 25 from rubbing against each other.

[0040] Specifically, bearing 23 can be a ceramic bearing, plastic bearing, ball bearing, needle roller bearing, angular bearing, deep groove bearing, or sliding bearing. This reduces weight and friction.

[0041] In one embodiment, such as Figure 3As shown, the flywheel rotor 22 includes a body 221 and magnets 222 surrounding the body 221. When the stator 21 is energized, it generates a rotating magnetic field, and the magnets 222 drive the body 221 to rotate under the action of the rotating magnetic field. In this way, the flywheel rotor 22 can rotate. The flywheel rotor 22 should be dynamically balanced and have a smooth and clean surface to reduce wind wear on the surface of the flywheel rotor 22.

[0042] In this embodiment, the magnet 222 has a carbon fiber ring around its outer periphery to strengthen the flywheel rotor 22. This increases the strength of the flywheel rotor 22 and prevents it from breaking under centrifugal force or other forces during high-speed operation.

[0043] In one embodiment, continue as follows Figure 3 As shown, the stator 21 includes an iron core 211 and a winding 212 surrounding the iron core 211. The iron core 211 is a structural component made of amorphous soft magnetic material. This reduces iron losses in the motor assembly 2. The winding 212 is a hollow cup winding or an iron core winding wound with graphene high-conductivity copper wire or enameled wire. This reduces copper losses. The winding 212 is a three-phase AC winding 212 with 1-10 pole pairs. The motor assembly 2 uses a permanent magnet brushless DC motor or a permanent magnet synchronous motor, which can function as both a motor and a generator.

[0044] In one embodiment, continue as follows Figure 3 As shown, the motor assembly 2 also includes a rotating shaft 27, through which the flywheel rotor 22 is rotatably connected to the bearing 23. This allows the flywheel rotor 22 to drive the rotating shaft 27 to rotate relative to the bearing 23.

[0045] In one embodiment, continue as follows Figure 3 As shown, the integrated energy storage system of the conical combined bearing motor flywheel also includes a housing 3, a DC input line 4, a circuit board 5, and three-phase output lines. The housing 3 is fixed to the housing assembly 1 and has an installation space 300. The circuit board 5 is fixed within the installation space 300. The DC input line 4 is electrically connected to the circuit board 5. There can be 1-2 circuit boards 5, which are electrically connected to the stator 21 through the three-phase output lines. DC power flows into the circuit board 5 through the DC input line 4, and then into the three-phase output lines through the circuit board 5 to energize the stator 21. The stator 21 generates a rotating magnetic field, and the flywheel rotor 22 rotates under the action of the magnetic field, converting electrical energy into the rotational kinetic energy of the flywheel rotor 22 for storage.

[0046] The heat-generating components of circuit board 5 are bonded to housing 3 via thermally conductive silicone grease. Heat dissipation from the heat-generating components (e.g., MOSFETs) on circuit board 5 is achieved through this thermally conductive silicone grease bonded to housing 3. Housing 3 is a structural component made of magnesium, aluminum alloy, or thermally conductive material. The outer surface of housing 3 has multiple heat dissipation fins. This facilitates heat exchange and improves heat dissipation efficiency.

[0047] In one embodiment, such as Figure 6 The charging and discharging control principle shown is as follows: when the motor is stopped or at low speed, the back EMF is very low. When the charging power supply voltage is higher than the peak value of the motor's back EMF, the controller can control the motor driver to increase the motor speed. At this time, the energy of the power supply is transferred to the integrated energy storage system of the conical bearing motor flywheel. When the motor reaches the rated speed, the energy stored in the flywheel is E=(Jω^2) / 2, where J is the moment of inertia and ω is the rated speed of the motor. When the integrated energy storage system of the conical bearing motor flywheel needs to discharge, the integrated energy storage system of the conical bearing motor flywheel transmits electrical energy to the power supply output through the rectifier circuit and the DC / DC conversion circuit.

[0048] In one embodiment, such as Figure 6 As shown, the circuit board consists of a controller composed of an MCU, a motor driver composed of silicon carbide MOSFETs, a silicon carbide rectifier circuit, a DC / DC converter composed of silicon carbide MOSFETs, and power supply, output, and motor detection circuits. During charging, the power supply voltage is higher than the motor back EMF. The controller composed of the MCU measures the energy storage and charging status of the motor flywheel through the power supply test circuit and the motor driver, controls the motor driver to drive the motor flywheel to increase the energy storage, and provides overvoltage, undervoltage, and overcurrent protection. During discharging, the flywheel motor stator cuts magnetic lines of force to generate electricity, which is rectified and converted to provide suitable electrical energy for the load. As the energy output decreases, the speed decreases. The controller composed of the MCU also measures the energy storage and discharging status of the motor flywheel through the output detection circuit, the motor output detection circuit, and the DC / DC conversion circuit, and provides output voltage adjustment and undervoltage and overcurrent protection functions.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0050] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An integrated energy storage system for a conical combined bearing motor flywheel, characterized in that, The integrated energy storage system of the conical combined bearing motor flywheel includes a shell assembly and a motor assembly. The motor assembly includes a stator, a flywheel rotor, two bearings, two first conical magnetic components, and two second conical magnetic components. The shell assembly includes a shell, an upper cover, and a lower cover connected to the shell. The upper cover, the lower cover, and the shell form an accommodating space. The two bearings are respectively fixed to the upper cover and the lower cover. The flywheel rotor is disposed within the accommodating space and is rotatably connected to the bearings. The stator radially surrounds the flywheel rotor and generates a rotational magnetic force to drive the flywheel rotor to rotate when energized. The two first conical magnetic components are respectively fixed to the upper cover and the lower cover and surround the two bearings. The two second conical magnetic components are respectively fixed to the upper conical surface and the lower conical surface of the flywheel rotor and are arranged in a one-to-one correspondence with the first conical magnetic components. The first conical magnetic components and the second conical magnetic components repel each other with the same pole, so that the flywheel rotor generates a magnetic levitation clamping force and automatic centering.

2. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, There is a gap between the first conical magnetic component and the second conical magnetic component.

3. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 2, characterized in that, The motor assembly also includes an air-bearing gap foil structure, which is fixed to one side of the first conical magnetic component opposite to the second conical magnetic component, or the air-bearing gap foil structure is fixed to one side of the second conical magnetic component opposite to the first conical magnetic component.

4. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The bearing is a ceramic bearing, a plastic bearing, a ball bearing, a needle roller bearing, an angular bearing, a deep groove bearing, or a sliding bearing.

5. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The flywheel rotor includes a body and magnets surrounding the body. When the stator is energized, it generates a rotating magnetic field, and the magnets drive the body to rotate under the action of the rotating magnetic field.

6. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 5, characterized in that, The magnet has a carbon fiber ring around its outer periphery, which is used to strengthen the flywheel rotor.

7. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The stator includes an iron core and a winding surrounding the iron core. The iron core is a structural component made of amorphous soft magnetic material, and the winding is a hollow cup winding or an iron core winding wound with graphene high-conductivity copper wire or enameled wire.

8. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The motor assembly also includes a rotating shaft, through which the flywheel rotor is rotatably connected to the bearing.

9. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The shell assembly is a structural component made of magnesium, aluminum alloy, or plastic.

10. The integrated energy storage system of tapered combined bearing motor flywheel according to claim 1, characterized in that, The tapered combined bearing motor flywheel integrated energy storage system also includes a housing, a DC input line, a circuit board, and three-phase output lines. The housing is fixed to the housing assembly and has an installation space. The circuit board is fixed within the installation space. The DC input line is electrically connected to the circuit board, and the circuit board is electrically connected to the stator through the three-phase output lines. The heat-generating components of the circuit board are attached to the outer casing with thermally conductive silicone grease, and the outer surface of the outer casing has multiple heat dissipation fins.

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