Double-rotor magnetic power generation equipment

Abstract

The invention discloses double-rotor magnetic power generation equipment, belongs to the technical field of magnetic power generation, and aims to solve the problems that an existing magnetic power generator is generally in a single-rotor form and adopts a permanent magnet single rotor without an excitation system, but the magnetic field intensity is difficult to adjust, and the stability is high by adopting a single electromagnetic rotor form. Through the arrangement of the double-rotor combined mechanism, the permanent magnet rotor assembly is fixed corresponding to the outer ring of the electromagnetic rotor assembly, stable magnetic induction lines are generated in the surrounding space of the permanent magnet rotor assembly, a high-coercive-force material is selected as a permanent magnet material, the demagnetization resistance is high, and the generator can achieve superposition enhancement or partial offset weakening of a total magnetic field by controlling the current direction; the electromagnetic rotor assembly and the permanent magnet rotor assembly are arranged in a separated mode through the aluminum alloy lantern ring, the aluminum alloy is made of a non-magnetic material and cannot be magnetized, magnetic field distribution cannot be interfered, the aluminum alloy lantern ring has high thermal conductivity, heat can be transmitted outwards through attachment of the aluminum alloy lantern ring and the electromagnetic rotor assembly, and excitation loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of magnetic power generation technology, and in particular to a dual-rotor magnetic power generation device. Background Technology

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. A generator is usually composed of components such as a stator, rotor, end cover and bearings. It is a power generation device that uses permanent magnets as a magnetic field source and realizes electromagnetic induction through rotor rotation. Its core principle is the law of electromagnetic induction.

[0003] A generator with a magnetic rotational levitation structure, authorized by announcement number CN117458788B, includes a modular housing, a rotating shaft movably connected to the modular housing, a stator assembly located inside the modular housing, a rotor assembly located on the rotating shaft, and a driven cooling mechanism connected to the outer wall of the modular housing. The driven cooling mechanism includes a telescopic air pump assembly, a telescopic liquid pump assembly, and a telescopic liquid storage assembly. The telescopic liquid pump assembly is equipped with a heat exchange component. Existing magnetic generators are usually single-rotor type. Using a permanent magnet single rotor eliminates the need for an excitation system and results in a small size. However, the magnetic field strength is fixed and determined by the characteristics of the permanent magnet, making it difficult to adjust. High temperatures or strong vibrations may cause the magnetic performance to decay. In contrast, using a single electromagnetic rotor provides high magnetic field stability, but there are excitation losses, resulting in low power generation efficiency.

[0004] To address the aforementioned problems, a dual-rotor magnetic power generation device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-rotor magnetic power generation device, which solves the problem that existing magnetic generators in the background technology are usually single-rotor in form. The single rotor with permanent magnets does not require an excitation system and is small in size, but the magnetic field strength is fixed and determined by the characteristics of permanent magnets, which is difficult to adjust. High temperature or strong vibration may cause the magnetic performance to decay. In contrast, the single electromagnetic rotor has high magnetic field stability, but there are excitation losses, resulting in low power generation efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-rotor magnetic power generation device, comprising a housing mechanism, wherein a dual-rotor assembly mechanism is disposed through the middle of the housing mechanism, and a stator structure for rotating and generating electricity is connected to the dual-rotor assembly mechanism; the housing mechanism includes a brush fixing end cover, and a brush energizing hole for connecting wires to energize the brush is opened on the side of the brush fixing end cover; the dual-rotor assembly includes a rotating shaft disposed through the brush fixing end cover, and an electromagnetic rotor assembly is fixedly connected to the rotating shaft; an aluminum alloy collar is disposed around the outer side of the electromagnetic rotor assembly, and a permanent magnet rotor assembly is screwed to one side of the aluminum alloy collar; the stator structure includes a stator core that fits against the inner wall of the housing mechanism, and a three-phase winding coil is disposed around the stator core.

[0007] Furthermore, the housing mechanism also includes a housing sleeve connected to one side of the brush fixing end cover, and a rear end cover is provided on one side of the housing sleeve.

[0008] Furthermore, the housing mechanism also includes screws that are fitted onto the outer ring of the rear end cover, the housing sleeve, and the brush fixing end cover. The screws are arranged in four groups in a circular array with the center of the rear end cover as the center, and one end of each screw is threaded with a nut.

[0009] Furthermore, bearings are fitted onto both sides of the rotating shaft corresponding to the rear end cover and the brush fixing end cover.

[0010] Furthermore, the electromagnetic rotor assembly includes a slip ring connected to the rotating shaft, a commutation hook block connected to the slip ring, an excitation coil supported on the commutation hook block, and silicon steel sheet cores arranged side by side inside the excitation coil.

[0011] Furthermore, the aluminum alloy collar is fitted onto the outside of the silicon steel sheet core.

[0012] Furthermore, the permanent magnet rotor assembly includes an aluminum alloy connecting plate connected to one side of the aluminum alloy collar, and a permanent magnet block is connected to one side of the aluminum alloy connecting plate.

[0013] Furthermore, the permanent magnet blocks are arranged in a circular array of six groups with the center of the aluminum alloy connecting plate as the center, and the excitation coils in the electromagnetic rotor assembly are wound around the silicon steel sheet core in six groups.

[0014] Furthermore, the three-phase winding coils are connected end to end, and the three-phase winding coils are inserted through the stator core.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention provides a dual-rotor magnetic power generation device. Through the arrangement of a dual-rotor combination mechanism, an electromagnetic rotor assembly and a permanent magnet rotor assembly are interlocked on the inner and outer sides. The permanent magnet rotor assembly is fixedly arranged corresponding to the outer ring of the electromagnetic rotor assembly, generating stable magnetic field lines in the surrounding space. The permanent magnet rotor assembly does not require external power supply to generate a magnetic field. The structure is simple and efficient. The permanent magnet material of the permanent magnet rotor assembly is selected from high coercivity materials such as neodymium iron boron or samarium cobalt, which have strong anti-demagnetization ability. Low coercivity materials such as ferrite or AlNiCo are avoided to prevent demagnetization caused by strong reverse magnetic fields. In the interlocking of the electromagnetic rotor assembly and the permanent magnet rotor assembly, the generator of this structure can achieve superposition enhancement or partial cancellation weakening of the total magnetic field by controlling the direction of the current, thereby changing the distribution of the total magnetic field and solving the superposition distribution problem of the dual rotors in existing magnetic power generators.

[0016] 2. This invention provides a dual-rotor magnetic power generation device. An aluminum alloy collar separates the electromagnetic rotor assembly and the permanent magnet rotor assembly. The wires inside the brush energizing holes are connected to an external power source. The brushes inside the brush fixing end caps contact the electromagnetic rotor assembly to achieve conductivity. A rotating shaft is used to fix the electromagnetic rotor assembly. The electromagnetic rotor assembly generates a magnetic field through current, cutting the external magnetic field formed by the stator core and three-phase winding coils to generate an induced current, thus achieving power generation. The electromagnetic rotor assembly can adjust the magnetic field strength by regulating the internal current, flexibly controlling the output voltage and power. This device is suitable for high-power applications requiring... In scenarios requiring stable output, the aluminum alloy collar, made of non-magnetic aluminum alloy, will not be magnetized or interfere with the magnetic field distribution. Furthermore, the aluminum alloy collar has high thermal conductivity, allowing it to transfer heat outwards when in contact with the electromagnetic rotor assembly, reducing excitation losses. This addresses the problem of existing magnetic generators typically using a single rotor. While a single permanent magnet rotor eliminates the need for an excitation system and is compact, the magnetic field strength is fixed and difficult to adjust due to the characteristics of the permanent magnet. High temperatures or strong vibrations can cause magnetic performance degradation. In contrast, a single electromagnetic rotor offers high magnetic field stability but suffers from excitation losses, leading to low power generation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the dual-rotor combination mechanism and stator structure of the present invention; Figure 4 This is a schematic diagram of the stator structure of the present invention; Figure 5 This is a schematic diagram of the structure of the three-phase winding coil of the present invention; Figure 6This is a schematic diagram of the internal side view structure of the present invention; Figure 7 This is a schematic diagram of the dual-rotor combined mechanism of the present invention; Figure 8 This is a schematic diagram of the internal split structure of the present invention; Figure 9 This is a schematic diagram of the electromagnetic rotor assembly of the present invention; Figure 10 This is a schematic diagram of the collector ring and commutation hook block of the present invention.

[0018] In the diagram: 1. Outer shell mechanism; 11. Rear end cover; 12. Outer shell sleeve; 13. Brush fixing end cover; 131. Brush energizing hole; 14. Screw; 141. Nut; 2. Dual rotor assembly mechanism; 21. Shaft; 211. Bearing; 22. Electromagnetic rotor assembly; 221. Slip ring; 222. Commutation hook block; 223. Silicon steel sheet core; 224. Excitation coil; 23. Aluminum alloy collar; 24. Permanent magnet rotor assembly; 241. Aluminum alloy connecting plate; 242. Permanent magnet block; 3. Stator structure; 31. Stator core; 32. Three-phase winding coil. Detailed Implementation

[0019] 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.

[0020] In order to solve existing technical problems, such as Figures 1-10 As shown, the following preferred technical solutions are provided: A dual-rotor magnetic power generation device includes a housing mechanism 1, a dual-rotor assembly mechanism 2 passing through the middle of the housing mechanism 1, a stator structure 3 for rotating and generating electricity connected to the dual-rotor assembly mechanism 2, a brush fixing end cover 13 with a brush energizing hole 131 on the side for connecting wires to energize the brushes, a rotating shaft 21 passing through the brush fixing end cover 13, an electromagnetic rotor assembly 22 fixedly connected to the rotating shaft 21, an aluminum alloy collar 23 surrounding the outer side of the electromagnetic rotor assembly 22, a permanent magnet rotor assembly 24 screwed to one side of the aluminum alloy collar 23, and a stator structure 3 including a stator core 31 attached to the inner wall of the housing mechanism 1, a three-phase winding coil 32 passing through the stator core 31.

[0021] Specifically, the wires inside the brush energizing hole 131 are connected to an external power source. The brush inside the brush fixing end cover 13 contacts the electromagnetic rotor assembly 22 to achieve conductivity. The rotating shaft 21 is used to fix the electromagnetic rotor assembly 22. The electromagnetic rotor assembly 22 generates a magnetic field through current, which cuts the external magnetic field formed by the stator core 31 and the three-phase winding coils 32 to generate an induced current, thus generating electricity. The electromagnetic rotor assembly 22 can change the magnetic field strength by adjusting the internal current, flexibly controlling the output voltage and power. It is suitable for high-power scenarios that require stable output. The aluminum alloy collar 23 is made of aluminum alloy, which is a non-magnetic material. It will not be magnetized and will not interfere with the magnetic field distribution. In addition, the aluminum alloy collar 23 has high thermal conductivity, and its contact with the electromagnetic rotor assembly 22 can transfer heat to the electromagnetic rotor assembly 22. External transmission reduces excitation losses. The permanent magnet rotor assembly 24 is set on the outer ring of the aluminum alloy collar 23. The permanent magnet rotor assembly 24 is fixedly set on the outer ring of the electromagnetic rotor assembly 22, generating stable magnetic field lines in the surrounding space. The permanent magnet rotor assembly 24 does not require external power supply to generate a magnetic field. It has a simple structure and high efficiency. The permanent magnet material of the permanent magnet rotor assembly 24 is selected from high coercivity materials such as neodymium iron boron or samarium cobalt, which have strong anti-demagnetization ability. Low coercivity materials such as ferrite or AlNiCo are avoided to prevent demagnetization caused by strong reverse magnetic field. In the mutual nesting of the electromagnetic rotor assembly 22 and the permanent magnet rotor assembly 24, the generator of this structure can change the distribution of the total magnetic field by controlling the direction of the current to achieve superposition enhancement or partial cancellation weakening of the total magnetic field.

[0022] The outer casing mechanism 1 also includes an outer casing sleeve 12 connected to one side of the brush fixing end cover 13. A rear end cover 11 is provided on one side of the outer casing sleeve 12. The rear end cover 11 has a hole for connecting the terminals of the three-phase winding coil 32. The stator core 31 is used to connect the three-phase winding coil 32. The electromagnetic induction of the stator structure 3 converts the rotational energy of the magnetic field into electrical energy, which is the core of the generator. The stator core 31 is made of silicon steel sheets, which reduces eddy current losses and provides magnetic circuit channels. The three-phase winding coil 32 is made of enameled wire wound into multiple coils and embedded in the slots of the stator core 31. When the rotor magnetic field dual rotor combination mechanism 2 rotates, the winding cuts the magnetic field lines to generate an induced electromotive force.

[0023] The outer casing mechanism 1 also includes screws 14 that are fitted onto the outer ring of the rear end cover 11, the outer casing sleeve 12 and the brush fixing end cover 13. The screws 14 are arranged in four groups in a circular array with the center of the rear end cover 11 as the center. One end of the screws 14 is threaded with a nut 141. The nut 141 is inserted into the outer ring of the rear end cover 11, the outer casing sleeve 12 and the brush fixing end cover 13. The screws 14 achieve external closure of the outer casing mechanism 1 from four directions.

[0024] Bearings 211 are fitted on both sides of the rotating shaft 21 corresponding to the rear end cover 11 and the brush fixing end cover 13. The bearings 211 are used to reduce the rotational resistance of the rotating shaft 21.

[0025] The electromagnetic rotor assembly 22 includes a collector ring 221 connected to the rotating shaft 21. A commutation hook block 222 is connected to the collector ring 221. An excitation coil 224 is supported on the commutation hook block 222. Silicon steel sheet cores 223 are arranged side by side inside the excitation coil 224. The collector ring 221 contacts the brush inside the brush fixing end cover 13 to achieve energization. The commutation hook block 222 is used to change the electrodes of the silicon steel sheet core 223 around the excitation coil 224. After the excitation coil 224 is energized, it is used to cut the magnetic field to generate electricity.

[0026] The aluminum alloy collar 23 is sleeved on the outside of the silicon steel sheet core 223. The winding of the excitation coil 224 will dissipate heat when energized, and the aluminum alloy collar 23 conducts the heat outward to complete the heat dissipation.

[0027] The permanent magnet rotor assembly 24 includes an aluminum alloy connecting plate 241 connected to one side of the aluminum alloy collar 23. A permanent magnet block 242 is connected to one side of the aluminum alloy connecting plate 241. The aluminum alloy connecting plate 241 is used to fix the permanent magnet block 242 to the periphery of the aluminum alloy collar 23, thereby fixing the permanent magnet inside the stator structure 3.

[0028] The permanent magnet blocks 242 are arranged in a circular array with the center of the aluminum alloy connecting plate 241 as the center. The excitation coils 224 in the electromagnetic rotor assembly 22 are wound around the silicon steel core 223 in six groups. The permanent magnet blocks 242 and the sides of the silicon steel core 223 are arranged one-to-one, so that the permeability around the coils changes. The magnetic fields generated by the permanent magnet rotor assembly 24 and the electromagnetic rotor assembly 22 have superposition and cancellation effects in the space inside the stator structure 3. The arrangement of the six groups of excitation coils 224 distributes the total power into multiple groups, reducing the current load of a single winding.

[0029] The three-phase winding coil 32 is connected at both ends and inserted through the stator core 31. After the three-phase winding coil 32 determines the start and end ends by induction, it is inserted into the stator core 31 to achieve winding. It is necessary to protect the coil position accurately and prevent the insulation from being damaged.

[0030] Working principle: The brushes inside the brush fixing end cover 13 contact with the electromagnetic rotor assembly 22 to achieve conductivity. The electromagnetic rotor assembly 22 generates a magnetic field through current, which cuts the external magnetic field formed by the stator core 31 and the three-phase winding coils 32 to generate an induced current, thus generating electricity. The commutation hook block 222 in the electromagnetic rotor assembly 22 rotates and alternately contacts the brushes, which is used to change the electrodes of the silicon steel sheet core 223 around the excitation coil 224. After the excitation coil 224 is energized, it is used to cut the magnetic field to generate electricity. By adjusting the magnitude of the internal current, the magnetic field strength can be changed, and the output voltage and power can be flexibly controlled. It is suitable for high-power scenarios that require stable output. The aluminum alloy collar 23 is made of aluminum alloy and is non-magnetic. The material is not magnetized and does not interfere with the magnetic field distribution. The permanent magnet rotor assembly 24 is set on the outer ring of the aluminum alloy collar 23, generating stable magnetic field lines in the surrounding space. The permanent magnet rotor assembly 24 does not require external power supply to generate a magnetic field. It has a simple structure and high efficiency. The permanent magnet material of the permanent magnet rotor assembly 24 is selected from high coercivity materials such as neodymium iron boron or samarium cobalt, which have strong anti-demagnetization ability. Low coercivity materials such as ferrite or AlNiCo are avoided to prevent demagnetization caused by strong reverse magnetic field. In the mutual nesting of the electromagnetic rotor assembly 22 and the permanent magnet rotor assembly 24, the generator of this structure can achieve superposition enhancement or partial cancellation weakening of the total magnetic field by controlling the direction of current, thereby changing the total magnetic field distribution.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 dual-rotor magnetic power generation device, comprising a housing mechanism (1), characterized in that, A dual rotor assembly mechanism (2) is provided through the middle of the outer shell mechanism (1), and a stator structure (3) for rotating power generation is connected to the dual rotor assembly mechanism (2). The outer casing mechanism (1) includes a brush fixing end cover (13), and the side of the brush fixing end cover (13) is provided with a brush energizing hole (131) for connecting wires to the brush. The dual rotor assembly mechanism (2) includes a rotating shaft (21) that passes through the brush fixing end cover (13). An electromagnetic rotor assembly (22) is fixedly connected to the rotating shaft (21). An aluminum alloy collar (23) surrounds the outer side of the electromagnetic rotor assembly (22). A permanent magnet rotor assembly (24) is screwed to one side of the aluminum alloy collar (23). The stator structure (3) includes a stator core (31) that fits into the inner wall of the outer casing mechanism (1). A three-phase winding coil (32) is arranged around the stator core (31).

2. The dual-rotor magnetic power generation device as described in claim 1, characterized in that: The outer casing mechanism (1) further includes an outer casing sleeve (12) connected to one side of the brush fixing end cover (13), and a rear end cover (11) is provided on one side of the outer casing sleeve (12).

3. The dual-rotor magnetic power generation device as described in claim 1, characterized in that: The outer casing mechanism (1) also includes a screw (14) sleeved on the outer ring of the rear end cover (11), the outer casing (12) and the brush fixing end cover (13). The screw (14) is arranged in a circular array with the center of the rear end cover (11) as the center. One end of the screw (14) is threaded with a nut (141).

4. The dual-rotor magnetic power generation device as described in claim 1, characterized in that: The rotating shaft (21) is fitted with bearings (211) on both sides of the rear end cover (11) and the brush fixing end cover (13).

5. A dual-rotor magnetic power generation device as described in claim 1, characterized in that: The electromagnetic rotor assembly (22) includes a collector ring (221) connected to the rotating shaft (21), a commutation hook block (222) connected to the collector ring (221), an excitation coil (224) supported on the commutation hook block (222), and silicon steel sheet cores (223) arranged side by side inside the excitation coil (224).

6. A dual-rotor magnetic power generation device as described in claim 5, characterized in that: The aluminum alloy collar (23) is fitted onto the outside of the silicon steel sheet core (223).

7. A dual-rotor magnetic power generation device as described in claim 1, characterized in that: The permanent magnet rotor assembly (24) includes an aluminum alloy connecting plate (241) connected to one side of an aluminum alloy collar (23), and a permanent magnet block (242) is connected to one side of the aluminum alloy connecting plate (241).

8. A dual-rotor magnetic power generation device as described in claim 7, characterized in that: The permanent magnet block (242) is arranged in a circular array with the center of the aluminum alloy connecting plate (241) as the center. The excitation coil (224) in the electromagnetic rotor assembly (22) is wound around the silicon steel sheet core (223) in six groups.

9. A dual-rotor magnetic power generation device as described in claim 1, characterized in that: The three-phase winding coil (32) is connected at both ends and the three-phase winding coil (32) is inserted through the stator core (31).

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