Variable voltage power supply device and variable voltage power supply system

Abstract

The present invention provides a variable voltage power supply device and a variable voltage power supply system, the power supply device comprises a stator and a rotor, the rotor rotates relative to the stator; the rotor comprises a rotating body and a plurality of permanent magnets, the plurality of permanent magnets are arranged on the rotating body, the stator comprises a magnetic core, a plurality of first windings and a plurality of second windings, a plurality of winding mounting blocks are arranged on the magnetic core, the plurality of winding mounting blocks are evenly arranged in a radial shape along the circumference of the magnetic core, the plurality of permanent magnets are respectively arranged one by one opposite to the plurality of winding mounting blocks, a first winding and a second winding are respectively arranged on a winding mounting block, a first connection line for input voltage is connected to the first winding, and a second connection line for output voltage is connected to the second winding. With the above structure, the rotor rotates to make the second winding generate current and output voltage, so that by controlling the voltage output in the second winding, the output voltage can be adjusted in real time, so that the voltage transformer can be transformed within a certain value range.

Description

Technical Field

[0001] The present invention relates to the field of power transformation equipment, and in particular to a variable voltage power supply device and a variable voltage power supply system. Background Art

[0002] Transformers are basic equipment for power transmission and distribution. Transformers are devices that use the principle of electromagnetic induction to change AC voltage. The main components are primary coils, secondary coils, and iron cores. The output voltage is determined by the turns ratio of the primary coil and the secondary coil and the input voltage. However, existing transformers can only input a fixed voltage and output a fixed voltage, making the transformer's step-up or step-down function single, and unable to adjust the output voltage in real time according to user needs. Summary of the invention

[0003] The first object of the present invention is to provide a variable voltage power supply device capable of adjusting the output voltage in real time.

[0004] A second object of the present invention is to provide a variable voltage power supply system including the variable voltage power supply device.

[0005] In order to achieve the above-mentioned first purpose, the variable voltage power supply device provided by the present invention includes a stator and a rotor, and the rotor rotates relative to the stator; the rotor includes a rotating body and multiple permanent magnets, and the multiple permanent magnets are arranged on the rotating body; the stator includes a magnetic core, multiple first windings and multiple second windings, and multiple winding mounting blocks are arranged on the magnetic core. The multiple winding mounting blocks are evenly arranged radially along the circumference of the magnetic core. The multiple permanent magnets are respectively arranged one by one opposite to the multiple winding mounting blocks, and a first winding and a second winding are respectively arranged on a winding mounting block, and the first winding is connected to a first connection wire for input voltage, and the second winding is connected to a second connection wire for output voltage.

[0006] It can be seen from the above scheme that when the first winding on the stator is energized, the rotor starts to rotate under the action of the magnetic field, so that the rotating permanent magnet cuts the fixed magnetic field of the second winding, so that the second winding generates current, and the second winding can output voltage. Since the number of coil turns in the first winding is different from the number of coil turns in the second winding, the turn ratio of the coils in the first winding and the second winding, the size of the input voltage and the speed of the rotor are adjusted to control the size of the voltage output in the second winding, thereby realizing real-time adjustment of the size of the output voltage, so that the voltage transformation function is no longer a one-way transformation, and the voltage transformation is realized within a certain numerical range, thereby expanding the application scope of the voltage transformation power supply device. While users save time in replacing inverters, they do not need to purchase inverters of various output voltages, saving costs.

[0007] A further solution is that the first winding and the second winding are arranged along the axial direction of the rotor.

[0008] It can be seen that the first winding and the second winding are arranged along the axial direction of the rotor, which avoids the compact structure of the stator in the circumferential direction and makes the internal structural layout of the variable voltage power supply device more reasonable.

[0009] A further solution is that a first mounting plate, a partition and a second mounting plate are provided on the winding mounting block, the partition is located between the first mounting plate and the second mounting plate, a first through slot is provided between the first mounting plate and the partition, a second through slot is provided between the partition and the second mounting plate, the first through slot and the second through slot are arranged in parallel, the first winding passes through the first through slot, the second winding passes through the second through slot, the first winding is arranged outside the first mounting plate, and the second winding is arranged outside the second mounting plate.

[0010] It can be seen that the first winding is arranged on the first mounting plate through the first through slot, and the second winding is arranged on the second mounting plate through the second through slot, so that the first winding and the second winding are simultaneously arranged on the same winding mounting block. The first winding and the second winding located on the same winding mounting block form a transformer assembly to realize the transformer function.

[0011] A further solution is that the first through slot and the second through slot extend in the radial direction of the magnetic core respectively.

[0012] It can be seen that the permanent magnet is arranged in the radial direction of the magnetic core, and the first through slot and the second through slot extend in the radial direction of the magnetic core respectively, so that the distance between the permanent magnet and the first winding and the second winding is equal, reducing the error.

[0013] A further solution is that a plurality of baffles are provided on the magnetic core, and a baffle is provided on each winding mounting block; along the radial direction of the magnetic core, the width of the baffle is greater than the width of the winding mounting block; the first winding and the second winding are respectively arranged between the baffle and the magnetic core; the number of baffles is the same as the number of permanent magnets, and a spacing is provided between every two adjacent baffles.

[0014] It can be seen that the provision of the baffle enables the first winding and the second winding to be more stably arranged on the winding mounting block.

[0015] A further solution is that the magnetic core, the plurality of winding mounting blocks and the plurality of baffles are integrally formed and connected. It can be seen that the integrated arrangement can ensure that the magnetic flux on the winding mounting block is concentrated each time.

[0016] A further solution is that the number of turns of the first winding is less than the number of turns of the second winding.

[0017] A further solution is that a plurality of permanent magnets are arranged at equal distances on the outer periphery of the magnetic core along the circumferential direction of the magnetic core.

[0018] It can be seen that the setting of the outer rotor makes it easier to observe whether the power supply device is operating normally.

[0019] A further solution is that the rotating body includes a mounting side plate and a cover plate, the mounting side plate is annular, multiple permanent magnets are respectively arranged on the inner wall of the mounting side plate, the cover plate is connected to the mounting side plate along the circumference of the mounting side plate, heat dissipation holes are arranged on the cover plate, and the cover plate covers the stator.

[0020] It can be seen that the mounting side plate is the mounting carrier of the permanent magnet, the cover plate covers and protects the stator, and the heat dissipation holes on the cover plate are used for heat dissipation in the transformer power supply device.

[0021] To achieve the above-mentioned second purpose, the variable voltage power supply system provided by the present invention includes an input power supply, an electronic speed regulator, a variable voltage power supply device, a transistor, a voltage stabilizing element and an electrical appliance. The variable voltage power supply device is the above-mentioned variable voltage power supply device, the input power supply is connected to the electronic speed regulator, the electronic speed regulator is connected to the variable voltage power supply device, the variable voltage power supply device is respectively connected to the transistor, the transistor is connected to the voltage stabilizing element, and the voltage stabilizing element is connected to the electrical appliance.

[0022] It can be seen that the speed of the variable voltage power supply device is adjusted by the electronic speed regulator to change the magnetic flux in the variable voltage power supply device and then change the output voltage in the variable voltage power supply device, thereby realizing real-time adjustment of the voltage output by the transformer, saving the user's time in replacing the inverter, and eliminating the need for the user to purchase inverters of various output voltages. The voltage output end of the variable voltage power supply device is connected to the transistor and the voltage stabilizing element in sequence to control the current at the output end of the variable voltage power supply device and make the output voltage more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a stereoscopic diagram of an embodiment of a variable voltage power supply device of the present invention.

[0024] Figure 2 It is an exploded view of an embodiment of a variable voltage power supply device of the present invention.

[0025] Figure 3 It is a cross-sectional view of an embodiment of a variable voltage power supply device of the present invention.

[0026] Figure 4 It is a component connection diagram of an embodiment of a variable voltage power supply system of the present invention.

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0028] Two sets of windings are arranged on the stator in the variable voltage power supply device of the present invention. When the rotor in the variable voltage power supply device rotates, the second winding on the stator generates current, thereby outputting current. By adjusting the turns ratio of the two windings, the size of the input voltage and the rotation speed of the rotor of the variable voltage power supply device, the output voltage of the second winding is adjusted, thereby realizing voltage transformation within a certain numerical range.

[0029] See also Figure 1 and Figure 2 The variable voltage power supply device 1 includes a stator 2, a rotor 3 and a base 4. The stator 2 is arranged on the base 4, and the rotor 3 rotates relative to the stator 2 and the base 4 respectively.

[0030] The rotor 3 includes a rotating body 31 and a plurality of permanent magnets 32, and the plurality of permanent magnets 32 are arranged on the rotating body 31. In this embodiment, the rotating body 31 includes a mounting side plate 311 and a cover plate 312. The mounting side plate 311 is annular, and the cover plate 312 is connected to the mounting side plate 311 along the circumference of the mounting side plate 311. The permanent magnets 32 are in the form of sheets, and the plurality of permanent magnets 32 are arranged on the inner side wall of the mounting side plate 311. The plurality of permanent magnets 32 are arranged at equal distances along the circumference of the mounting side plate 311, and the plurality of permanent magnets 32 are attached to the mounting side plate 311, so that the permanent magnets 32 are arranged in a curved manner. In this embodiment, the stator 2 is arranged in the mounting side plate 311, and the cover plate 312 covers the stator 2.

[0031] Along the axial direction of the mounting side plate 311 , the cover plate 312 and the base 4 are arranged opposite to each other, the stator 2 is arranged between the cover plate 312 and the base 4 , and a mounting block 41 is protruded on the side wall of the base 4 facing the stator 2 .

[0032] The stator 2 includes a magnetic core 21, a plurality of first windings 22 and a plurality of second windings 23. The magnetic core 21 is cylindrical, and a hollow portion 211 is provided in the magnetic core 21. The hollow portion 211 penetrates the magnetic core 21 along the axial direction of the mounting side plate 311. The mounting block 41 is provided in the hollow portion 211, and the mounting block 41 is interference-connected with the magnetic core 21. A plurality of winding mounting blocks 24 are respectively provided on the magnetic core 21, and the plurality of winding mounting blocks 24 are uniformly arranged in a radial shape along the circumferential direction of the magnetic core 21. A first winding 22 and a second winding 23 are respectively provided on a winding mounting block 24, and a first wiring line for input voltage is connected to the first winding 22, and a second wiring line for output voltage is connected to the second winding 23. When the first winding 22 on the stator 2 is energized, the rotor 3 starts to rotate under the action of the magnetic field, and the rotating permanent magnet 32 ​​cuts the fixed magnetic field of the second winding 23, so that the second winding 23 generates current, and the second winding 23 can output voltage. Since the number of coil turns in the first winding 22 is different from the number of coil turns in the second winding 23, the turn ratio of the coils in the first winding 22 and the second winding 23, the input voltage and the rotation speed of the rotor 3 are adjusted to control the output voltage of the second winding 23, thereby achieving real-time adjustment of the output voltage, so that the voltage transformation function is no longer a one-way transformation, and voltage transformation is achieved within a certain numerical range, thereby expanding the application scope of the voltage transformation power supply device 1. While users save time in replacing inverters, they do not need to purchase inverters of various output voltages, saving costs.

[0033] As another embodiment, the variable voltage power supply device 1 can also be an inner rotor power supply device, in which case the magnetic core is annular and the rotating body is arranged inside the magnetic core; the winding mounting block is arranged on the inner side wall of the magnetic core facing the rotating body, so that the first winding and the second winding are arranged on the inner side wall of the magnetic core facing the rotating body, which facilitates the relative arrangement of the first winding, the second winding and the permanent magnet on the rotating body.

[0034] See also Figure 3 The winding mounting block 24 is provided with a first mounting plate 241, a partition plate 242 and a second mounting plate 243. A first through slot 244 is provided between the first mounting plate 241 and the partition plate 242, and a second through slot 245 is provided between the second mounting plate 243 and the partition plate 242. In this embodiment, the first through slot 244 and the second through slot 245 are arranged parallel to the axial direction of the magnetic core 21, and the first through slot 244 and the second through slot 245 extend along the radial direction of the magnetic core 21 respectively. The radial direction of the magnetic core 21 is parallel to the radial direction of the mounting side plate 311, and the axial direction of the magnetic core 21 is parallel to the axial direction of the mounting side plate 311. The first winding 22 penetrates the first through slot 244 and is sleeved outside the first mounting plate 241, and the second winding 23 penetrates the second through slot 245 and is sleeved outside the second mounting plate 243, so that the first winding 22 and the second winding 23 are arranged along the axial direction of the rotor 3. As another embodiment, the partition is removed from the winding mounting plate so that the first through slot is connected to the second through slot to form a larger through slot, and the first winding and the second winding pass through the larger through slot respectively. The first winding is sleeved on the first mounting plate, and the second winding is sleeved on the second mounting plate.

[0035] The first winding 22 and the second winding 23 may be arranged along the axial direction of the magnetic core 21, so that the distances between the first winding 22 and the permanent magnet 32 ​​and the distances between the second winding 23 and the permanent magnet 32 ​​are equal. Alternatively, a plurality of first windings or a plurality of second windings may be arranged along the circumferential direction of the magnetic core, that is, along the circumferential direction of the magnetic core, a second winding is arranged between every two adjacent first windings, and the arrangement is in this order.

[0036] A plurality of baffles 25 are provided on the magnetic core 21, and a baffle 25 is provided on each winding mounting block 211. Along the radial direction of the magnetic core 21, the width of the baffle 25 is greater than the width of the winding mounting block 24. The first winding 22 and the second winding 23 are respectively provided between the baffle 25 and the magnetic core 21, and the baffle 25 can prevent the first winding 22 or the second winding 23 from falling. Along the axial direction of the magnetic core 21, a spacing is provided between every two adjacent baffles 25, and a spacing is provided between every two adjacent permanent magnets 32. In this embodiment, the number of permanent magnets 32 is the same as the number of baffles 25, and the baffle 25 is provided in a curved manner, and the curvature of the baffle 25 is the same as the curvature of the permanent magnet 32. The permanent magnet 32 ​​and the baffle 25 are provided in a one-to-one correspondence; the area of ​​the side wall of the baffle 25 facing the permanent magnet 32 ​​is close to the area of ​​the side wall of the permanent magnet 32 ​​facing the stator 2. The provision of the baffles 25 enables the first winding 22 and the second winding 23 to be more stably provided on the winding mounting block 24. In the embodiment, the magnetic core 21, the plurality of winding mounting blocks 24 and the plurality of baffles 25 are made of the same material and are integrally formed and connected.

[0037] The number of turns of the first winding 22 is less than the number of turns of the second winding 23, and the radial width of the wire in the first winding 22 is greater than the radial width of the wire in the second winding 23; the turn ratio between the first winding 22 and the second winding 23 and the thickness of the wire in the first winding 22 and the second winding 23 can be adjusted according to the place of use of the transformer power supply device. The cover plate 312 is provided with a heat dissipation hole 313, the cover plate 312 covers the stator 2, the cover plate 312 covers and protects the stator 2, and the heat dissipation hole 313 on the cover plate 312 is used for heat dissipation in the transformer power supply device 1. In this embodiment, the cover plate 312 is provided with a rotating shaft 33, and the axial first end of the rotating shaft 33 passes through the cover plate 312. The mounting block 41 is provided with a hollow portion 42, and the hollow portion 42 passes through the mounting block 41 and the base 4 along the axial direction of the rotating shaft 33, and the axial second end of the rotating shaft 33 is located in the hollow portion 42 or the axial second end of the rotating shaft 33 passes through the hollow portion 42.

[0038] See also Figure 4The variable voltage power supply system of the present invention comprises an input power supply 6, an electronic speed regulator 7, a variable voltage power supply device 1, a transistor 8, a voltage stabilizing element 9 and an electrical appliance 10. The variable voltage power supply device 1 is the above-mentioned variable voltage power supply device 1. The input power supply 6 is connected to the electronic speed regulator 7, the electronic speed regulator 7 is connected to the variable voltage power supply device 1, the variable voltage power supply device 1 is connected to the transistor 8, the transistor 8 is connected to the voltage stabilizing element 9, and the voltage stabilizing element 9 is connected to the electrical appliance 10. The electronic speed regulator 7 is used to adjust the speed of the variable voltage power supply device 1, so as to change the magnetic flux in the variable voltage power supply device 1 and then change the size of the output voltage in the variable voltage power supply device 1, thereby achieving real-time adjustment of the voltage output by the variable voltage power supply device 1, saving the user time of replacing the inverter, and also eliminating the need for the user to purchase inverters of various output voltages. The voltage output end of the variable voltage power supply device 1 is connected to the transistor 8 and the voltage stabilizing element 9 in sequence to control the current at the output end of the variable voltage power supply device 1 and make the output voltage more stable.

[0039] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A variable voltage power supply device, characterized in that: It includes a stator and a rotor, and the rotor rotates relative to the stator; the rotor includes a rotating body and a plurality of permanent magnets, and the plurality of permanent magnets are arranged on the rotating body; the stator includes a magnetic core, a plurality of first windings and a plurality of second windings, and a plurality of winding mounting blocks are arranged on the magnetic core, and the plurality of winding mounting blocks are evenly arranged in a radial shape along the circumference of the magnetic core; the plurality of permanent magnets are respectively arranged one by one opposite to the plurality of winding mounting blocks, and one of the first windings and the second winding is respectively arranged on one of the winding mounting blocks, and the first winding is connected to a first connection line for input voltage, and the second winding is connected to a second connection line for output voltage.

2. The variable voltage power supply device according to claim 1, characterized in that: The first winding and the second winding are arranged along the axial direction of the rotor.

3. The variable voltage power supply device according to claim 1, characterized in that: The winding mounting block is provided with a first mounting plate, a partition and a second mounting plate, the partition is located between the first mounting plate and the second mounting plate, a first through slot is provided between the first mounting plate and the partition, a second through slot is provided between the partition and the second mounting plate, the first through slot and the second through slot are arranged in parallel, the first winding passes through the first through slot, the second winding passes through the second through slot, the first winding is arranged outside the first mounting plate, and the second winding is arranged outside the second mounting plate.

4. The variable voltage power supply device according to claim 3, characterized in that: The first through slot and the second through slot extend along a radial direction of the magnetic core respectively.

5. The variable voltage power supply device according to claim 1, characterized in that: A plurality of baffles are arranged on the magnetic core, and one baffle is arranged on each winding mounting block. Along the radial direction of the magnetic core, the width of the baffle is greater than the width of the winding mounting block; the first winding and the second winding are arranged between the baffle and the magnetic core respectively; the number of the baffles is the same as the number of the permanent magnets, and a spacing is arranged between every two adjacent baffles.

6. The variable voltage power supply device according to claim 5, characterized in that: The magnetic core, the plurality of winding mounting blocks and the plurality of baffles are integrally formed and connected.

7. The variable voltage power supply device according to claim 1, characterized in that: The number of turns of the first winding is less than the number of turns of the second winding.

8. The variable voltage power supply device according to any one of claims 1 to 7, characterized in that: The plurality of permanent magnets are arranged at equal intervals on the outer periphery of the magnetic core along the circumferential direction of the magnetic core.

9. The variable voltage power supply device according to claim 8, characterized in that: The rotating body includes a mounting side plate and a cover plate, the mounting side plate is annular, a plurality of permanent magnets are respectively arranged on the inner wall of the mounting side plate, the cover plate is connected to the mounting side plate along the circumference of the mounting side plate, heat dissipation holes are arranged on the cover plate, and the cover plate covers the stator.

10. Variable voltage power supply system, characterized in that : It includes an input power supply, an electronic speed regulator, a variable voltage power supply device, a transistor, a voltage stabilizing element and an electrical appliance, wherein the variable voltage power supply device is the variable voltage power supply device according to any one of claims 1 to 9, the input power supply is connected to the electronic speed regulator, the electronic speed regulator is connected to the variable voltage power supply device, the variable voltage power supply device is respectively connected to the transistor, the transistor is connected to the voltage stabilizing element, and the voltage stabilizing element is connected to the electrical appliance.

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