Flywheel energy storage device

Abstract

The utility model discloses a flywheel energy storage device which comprises a generator motor and a flywheel shell, an energy storage assembly is rotatably installed in the flywheel shell, a rotating shaft of the generator motor is inserted and installed in the energy storage assembly, butt joint discs are fixedly installed on the upper surface and the lower surface of the flywheel shell, and a splicing disc is fixedly installed on the outer surface of the generator motor. The splicing disc can be attached to the butt joint disc and is installed and fixed through a screw rod. Through the design of the energy storage assembly, the vacuum state of the flywheel in the flywheel shell cannot be affected in the disassembly and assembly process of the generator motor, and convenience is achieved in the generator maintenance process.

Description

Technical Field

[0001] The utility model relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage device. Background Art

[0002] Flywheel energy storage technology is an emerging electric energy storage technology. Like superconducting energy storage technology and fuel cell technology, it is an energy storage technology that has emerged in recent years and has great development prospects. Although chemical battery energy storage technology has been developed very maturely, it has problems such as limited charging and discharging times, serious environmental pollution, and high operating temperature requirements. This makes the emerging energy storage technology more and more valued by people. In particular, flywheel energy storage technology has begun to be more and more widely used in many industries at home and abroad.

[0003] For example, the patent with the national authorized patent announcement number CN204205812U discloses a flywheel energy storage device, including a vacuum container, a first bearing is arranged at the top of the vacuum container, a motor is arranged below the first bearing, a power electronic device is arranged on one side of the motor, the power electronic device is arranged outside the vacuum container, a flywheel is arranged below the motor, and a second bearing is arranged below the flywheel. The utility model has a simple structure, high and stable conversion efficiency of mechanical energy and electrical energy, long service life and low internal friction.

[0004] However, the above-mentioned flywheel energy storage device installs both the generator and the flywheel in a sealed vacuum container. If the generator is damaged and needs to be repaired, the staff needs to disassemble the vacuum container, which affects the sealing degree of the vacuum container and the subsequent performance.

[0005] Moreover, the heat transfer efficiency is low in a vacuum environment, which makes the heat dissipation problem of the generator particularly prominent. Additional heat dissipation measures are required to ensure the normal operation of the equipment, which in turn affects the overall performance. Utility Model Content

[0006] The purpose of the utility model is to provide a flywheel energy storage device to solve the problem proposed in the above background technology that the generator and the flywheel are both sealed and installed in a vacuum container. If the generator is damaged and needs to be repaired, the staff needs to disassemble the vacuum container, which affects the sealing degree of the vacuum container and affects the subsequent use performance.

[0007] Moreover, the heat transfer efficiency is low in a vacuum environment, which makes the heat dissipation problem of the generator particularly prominent. Additional heat dissipation measures are required to ensure the normal operation of the equipment, which in turn affects the overall performance.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A flywheel energy storage device comprises: a generator motor and a flywheel housing, wherein an energy storage component is rotatably installed in the flywheel housing, and a rotating shaft of the generator motor is inserted and installed in the energy storage component.

[0010] Preferably, docking plates are fixedly mounted on the upper and lower surfaces of the flywheel housing, and a splicing plate is fixedly mounted on the outer surface of the generator motor. The splicing plate can be fitted with the docking plate and fixed by screws.

[0011] Preferably, the energy storage assembly comprises a flywheel and a sealed bearing, the flywheel is rotatably mounted in a flywheel housing, connecting rods are fixedly mounted on the upper and lower surfaces of the flywheel, and the connecting rods penetrate through the upper and lower surfaces of the flywheel housing;

[0012] The outer surface of the connecting rod is sleeved with a sealed bearing, and the sealed bearing is rotatably installed in a mounting groove, and the mounting groove is arranged in the flywheel housing.

[0013] Preferably, the inner ring of the sealed bearing is sealedly connected to the outer surface of the connecting rod, and the outer ring of the sealed bearing is sealedly connected to the annular wall of the mounting groove.

[0014] Preferably, the flywheel is made of carbon fiber material.

[0015] Preferably, a plug-in interface is provided in the connecting rod and is connected to the upper and lower surfaces of the flywheel housing, and the rotating shaft of the generator motor can be plugged into the plug-in interface.

[0016] Preferably, the connecting rod can make the rotating space of the flywheel in the flywheel housing into a vacuum state through the cooperation of the sealed bearing.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Through the design of the generator motor, flywheel housing and energy storage component, when in use, the rotating shaft of the generator motor is inserted into the energy storage component to drive the energy storage component to rotate, and the energy storage component is in a vacuum state in the flywheel housing, so as to reduce the resistance of the energy storage component to rotate in the flywheel housing, thereby reducing friction and energy loss;

[0019] If the generator motor is damaged, it can be directly pulled out from the energy storage component without affecting the vacuum environment of the energy storage component in the flywheel housing.

[0020] 2. Through the design of the flywheel, sealed bearing, connecting rod and plug interface, a sealed bearing is mounted on the outer surface of the connecting rod, and the sealed bearing is rotatably installed in the installation groove. In addition, because the inner ring of the sealed bearing is sealedly connected to the outer surface of the connecting rod, and the outer ring of the sealed bearing is sealedly connected to the ring wall of the installation groove, the rotating space of the flywheel in the flywheel housing is in a vacuum state;

[0021] When splicing it with the generator motor, the splicing operation can be completed by inserting the rotating shaft of the generator motor into the plug-in interface of the connecting rod, and fixing the splicing plate on the upper surface of the docking plate by bolts, thereby achieving the goal of the disassembly and assembly process of the generator motor will not affect the vacuum state of the flywheel in the flywheel housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the flywheel energy storage device of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the flywheel energy storage device of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the energy storage component of the utility model;

[0025] Figure 4 It is a schematic structural diagram of a connecting rod and a flywheel of the utility model.

[0026] In the figure: 1. generator motor; 101. splicing plate; 102. mounting groove; 2. flywheel housing; 201. docking plate; 3. energy storage assembly; 301. flywheel; 302. sealed bearing; 303. connecting rod; 304. plug interface. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4 , the utility model provides the following technical solutions:

[0029] like Figure 1-Figure 2 As shown, a flywheel energy storage device comprises: a generator motor 1 and a flywheel housing 2 , an energy storage assembly 3 is rotatably installed in the flywheel housing 2 , and a rotating shaft of the generator motor 1 is inserted and installed in the energy storage assembly 3 .

[0030] The upper and lower surfaces of the flywheel housing 2 are fixedly mounted with docking plates 201, and the outer surface of the generator motor 1 is fixedly mounted with a splicing plate 101, which can be fitted with the docking plate 201 and fixed by screws.

[0031] Through the design of the generator motor 1, the flywheel housing 2 and the energy storage component 3, when in use, the rotating shaft of the generator motor 1 is inserted into the energy storage component 3 to drive the energy storage component 3 to rotate, and the energy storage component 3 is in a vacuum state in the flywheel housing 2, so that the resistance of the energy storage component 3 rotating in the flywheel housing 2 can be reduced, thereby reducing friction and energy loss, and improving energy storage efficiency;

[0032] If the generator motor 1 is damaged, it can be directly pulled out from the energy storage assembly 3 without affecting the vacuum environment of the energy storage assembly 3 in the flywheel housing 2.

[0033] like Figure 3-Figure 4 As shown, the energy storage assembly 3 includes a flywheel 301 and a sealed bearing 302. The flywheel 301 is rotatably mounted in the flywheel housing 2. Connecting rods 303 are fixedly mounted on the upper and lower surfaces of the flywheel 301. The connecting rods 303 extend through the upper and lower surfaces of the flywheel housing 2.

[0034] The outer surface of the connecting rod 303 is sleeved with a sealed bearing 302 , and the sealed bearing 302 is rotatably installed in the installation groove 102 , and the installation groove 102 is opened in the flywheel housing 2 .

[0035] The inner ring of the sealed bearing 302 is sealedly connected to the outer surface of the connecting rod 303 , and the outer ring of the sealed bearing 302 is sealedly connected to the annular wall of the mounting groove 102 .

[0036] The flywheel 301 is made of carbon fiber material.

[0037] The connecting rod 303 is provided with an inserting port 304 which is connected to the upper and lower surfaces of the flywheel housing 2 , and the rotating shaft of the generator motor 1 can be inserted into the inserting port 304 .

[0038] The connecting rod 303 cooperates with the sealed bearing 302 to make the rotating space of the flywheel 301 in the flywheel housing 2 a vacuum state.

[0039] Through the design of the flywheel 301, the sealed bearing 302, the connecting rod 303 and the plug-in port 304, the sealed bearing 302 is sleeved on the outer surface of the connecting rod 303, and the sealed bearing 302 is rotatably installed in the installation groove 102. In addition, because the inner ring of the sealed bearing 302 is sealedly connected to the outer surface of the connecting rod 303, and the outer ring of the sealed bearing 302 is sealedly connected to the annular wall of the installation groove 102, the rotating space of the flywheel 301 in the flywheel housing 2 is in a vacuum state;

[0040] When splicing it with the generator motor 1, the splicing operation can be completed by inserting the rotating shaft of the generator motor 1 into the plug-in port 304 of the connecting rod 303, and fixing the splicing disk 101 on the upper surface of the docking disk 201 by bolts, thereby achieving the disassembly and assembly process of the generator motor 1 without affecting the vacuum state of the flywheel 301 in the flywheel housing 2.

[0041] According to the above technical solution, the working steps of this solution are summarized and sorted out: when in use, the rotating shaft of the generator motor 1 can be inserted into the plug-in port 304 of the connecting rod 303, and the splicing plate 101 is fixedly installed on the upper surface of the docking plate 201 by bolts to complete the splicing operation;

[0042] When the system has excess electrical energy, this electrical energy will be used to drive the generator motor 1 to drive the flywheel 301 to rotate. As the speed increases, the kinetic energy (mechanical energy) stored in the flywheel 301 also increases. In this process, electrical energy is converted into the rotational kinetic energy of the flywheel 301;

[0043] When the system needs electric energy, the flywheel 301 will start to decelerate, and the generator motor 1 driven by the flywheel 301 will operate in the generator mode, converting the rotational kinetic energy of the flywheel 301 back into electric energy for use by the system or feeding back to the power grid.

[0044] In summary, the vacuum state of the flywheel 301 in the flywheel housing 2 will not be affected during the disassembly and assembly process of the generator motor 1, making it convenient to repair the generator.

[0045] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flywheel energy storage device, characterized in that: include: A generator motor (1) and a flywheel housing (2), wherein an energy storage assembly (3) is rotatably mounted in the flywheel housing (2), and a rotating shaft of the generator motor (1) is inserted and mounted in the energy storage assembly (3); The upper and lower surfaces of the flywheel housing (2) are both fixedly mounted with docking plates (201), and the outer surface of the generator motor (1) is fixedly mounted with a splicing plate (101), and the splicing plate (101) can be attached to the docking plate (201) and fixed by screws; The energy storage assembly (3) comprises a flywheel (301) and a sealed bearing (302), wherein the flywheel (301) is rotatably mounted in a flywheel housing (2), and connecting rods (303) are fixedly mounted on the upper and lower surfaces of the flywheel (301), and the connecting rods (303) extend through the upper and lower surfaces of the flywheel housing (2); The outer surface of the connecting rod (303) is sleeved with a sealed bearing (302), and the sealed bearing (302) is rotatably mounted in a mounting groove (102), and the mounting groove (102) is provided in the flywheel housing (2).

2. A flywheel energy storage device according to claim 1, characterized in that: The inner ring of the sealed bearing (302) is sealedly connected to the outer surface of the connecting rod (303), and the outer ring of the sealed bearing (302) is sealedly connected to the annular wall of the mounting groove (102).

3. A flywheel energy storage device according to claim 1, characterized in that: The flywheel (301) is made of carbon fiber material.

4. A flywheel energy storage device according to claim 2, characterized in that: The connecting rod (303) is provided with an inserting port (304) which is connected to the upper and lower surfaces of the flywheel housing (2); the rotating shaft of the generator motor (1) can be inserted into the inserting port (304).

5. A flywheel energy storage device according to claim 4, characterized in that: The connecting rod (303) cooperates with the sealed bearing (302) to make the rotating space of the flywheel (301) in the flywheel housing (2) in a vacuum state.

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