Power taking device in non-contact wireless power supply system

Abstract

The utility model relates to a power taking device in a non-contact wireless power supply system, which comprises magnetic core bodies, a coil and a shell, the magnetic core bodies are integrated by the coil, the magnetic core bodies comprise a first group of magnetic cores and a second group of magnetic cores, each group of magnetic cores comprises a plurality of single magnetic cores which are assembled into a whole in parallel, the two groups of magnetic cores are mounted back to back into a whole by winding a coil, passing grooves are respectively defined on two sides of the two groups of magnetic cores to allow a circuit to pass through, the shell comprises an upper shell and a lower shell, a gap is formed between the parts, wound by the coil, of the two groups of magnetic cores, the upper shell and the lower shell are assembled through a plurality of fasteners, and the two groups of magnetic cores are clamped between the upper shell and the lower shell. The fasteners penetrate through the space side by side, and the two ends of each fastener are correspondingly and fixedly connected with the upper shell and the lower shell respectively. According to the electricity taking device, the distance is arranged between the two groups of magnetic cores so that a plurality of fasteners can penetrate side by side, the heating influence of wireless power supply eddy current on the fasteners can be effectively avoided, and the space is saved. The whole electricity taking device is compact in structure and convenient to assemble.

Description

Technical Field

[0001] This utility model relates to the field of wireless power supply technology, specifically to a power collector in a non-contact wireless power supply system. Background Technology

[0002] Wireless power supply refers to the transmission of electrical energy without physical contact. It represents the third wireless revolution after wireless communication and wireless networks, and is considered a cutting-edge technology with fundamental application significance. Currently, its most common application is powering overhead cranes (OHTs) within workshops. For example, a single electromagnet is installed on the OHT crane and clipped onto the transmitting cable to provide the power required for the crane's movement.

[0003] Wireless power generators typically consist of a magnetic core and a mounting housing. Given that the magnetic core is usually U-shaped, it is typically mounted using a side-mounting method. For example, Figure 3 As shown, utility model CN219779863U discloses a dual-channel wireless power supply generator 1. Besides the iron core, the dual-channel wireless power supply generator 1 includes a first shielding plate 15 and a second shielding plate 16 that are parallel to each other. Preferably, both the first shielding plate 15 and the second shielding plate 16 are aluminum plates to better shield electromagnetic waves. A first plastic shell 13 and a second plastic shell 14 are sandwiched and fixed between the first shielding aluminum plate and the second shielding aluminum plate, both of which are parallel to the sidewall of the first power supply core. In this power supply generator, each individual magnetic core is independently fixed and staggered in position. This requires the installation structure to adopt a corresponding structure for each individual magnetic core. Furthermore, the fasteners are installed on the outer side, which is subject to a certain degree of influence from the eddy currents of the wireless power supply. Utility Model Content

[0004] In view of this, a power collector is provided in a non-contact wireless power supply system that is compact, neatly arranged, and easy to install. By setting a gap between the two sets of magnetic cores to allow multiple fasteners to pass through, the heating effect of the wireless power supply eddy current on the fasteners can be effectively avoided, and space can be saved.

[0005] A power collector in a contactless wireless power supply system includes a magnetic core, a coil, and a housing. The coil integrates the magnetic core. The magnetic core includes a first set of magnetic cores and a second set of magnetic cores. Each set of magnetic cores includes multiple single magnetic cores assembled side-by-side. The two sets of magnetic cores are mounted back-to-back by winding the coil and each set has a passage groove on its two sides to allow the line to pass through. The housing includes an upper shell and a lower shell. There is a gap between the two sets of magnetic cores at the part where the coil is wound. The gap is in the inner ring of the coil. The upper shell and the lower shell are assembled by multiple fasteners, and the two sets of magnetic cores are clamped between the upper shell and the lower shell. The multiple fasteners pass side-by-side through the gap, and the two ends of each fastener are respectively fixedly connected to the upper shell and the lower shell.

[0006] Preferably, the outer surface of the upper shell is covered with an upper aluminum plate, the outer surface of the lower shell is covered with a lower aluminum plate, and the fasteners sequentially penetrate the upper shell, the lower shell, the upper aluminum plate, the lower aluminum plate, and the spacing.

[0007] Preferably, each single magnetic core includes an upright portion and two parallel horizontal portions, the two horizontal portions being perpendicular to the upright portion and connected to each other at their upper and lower ends.

[0008] Furthermore, the spacing is defined by the two upright portions.

[0009] Preferably, the coil wraps around the two upright portions along the length of the power line, and the two horizontal portions of each single magnetic core are located on the same side outside the coil.

[0010] Preferably, the coil is in the shape of a U-shape or a racetrack shape, and the height of the coil is approximately equal to the height of the upright part or consistent with the distance between the two horizontal parts of the same single magnetic core; the magnetic core body is in the shape of an I-shape.

[0011] Preferably, the two sets of magnetic cores are arranged back to back and spaced apart to form the spacing, and the length of the spacing is substantially the same as the arrangement length of the multiple single magnetic cores or the length of the passage slot.

[0012] Furthermore, the fasteners are spaced apart along the arrangement direction of the multiple single magnetic cores. The two sets of magnetic cores are symmetrical structures. The fasteners are arranged at approximately uniform intervals on the vertical plane where the axis of symmetry of the two sets of magnetic cores is located. The fasteners and the single magnetic cores are in a one-to-one positional relationship.

[0013] Preferably, the outer surface of the upper shell is provided with an upper main surface groove, and the upper aluminum plate is embedded in the upper main surface groove. The outer surface of the lower shell is provided with a lower main surface groove, and the lower aluminum plate is embedded in the lower main surface groove. At least one end of the lower aluminum plate extends out of the lower main surface groove and at least one mounting hole is provided at the extended part. The inner surface of the upper shell is provided with an upper main surface inner groove, and the entire upper surface of the magnetic core is embedded in the upper main surface inner groove. The inner surface of the lower shell is provided with a lower main surface inner groove, and the entire lower surface of the magnetic core is embedded in the lower main surface inner groove.

[0014] Furthermore, the upper shell has lower flanges on at least two sides of its inner surface facing the magnetic core, and the lower flanges on both sides are respectively engaged with the upper edges on both sides of the magnetic core. The lower shell has upper flanges on at least two sides of its inner surface facing the magnetic core, and the upper flanges on both sides are respectively engaged with the lower edges on both sides of the magnetic core. The fasteners include nuts and screws. The upper shell, the lower shell, the upper aluminum plate, and the lower aluminum plate are respectively provided with through holes. The screws pass through the corresponding through holes in the upper and lower shells and the upper and lower aluminum plates and are fastened by the nuts to securely clamp the magnetic core.

[0015] In the aforementioned contactless wireless power supply system, the generator's design effectively avoids the heating effect of eddy currents from the wireless power supply on fasteners (such as metal screws) by creating a gap between the two sets of magnetic cores to allow fasteners to pass through. This fixing method also saves space. Furthermore, adding a plastic shell between the upper and lower aluminum plates and the magnetic core body reduces the impact of wireless power supply on the upper and lower aluminum plates. Moreover, the separate upper and lower aluminum plates facilitate fastening and effectively reduce the impact of the surrounding environment on the generator in the application scenario. The entire generator has a compact structure, is easy to assemble, and can adapt to a wider range of application scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a three-dimensional assembly structure of a power collector in a non-contact wireless power supply system provided by an embodiment of this utility model.

[0017] Figure 2 yes Figure 1 A three-dimensional exploded view of the power collector.

[0018] Figure 3 This is a schematic diagram of the existing power collector structure.

[0019] In the attached image:

[0020] 100. Electric collector; 11. First magnetic core; 101. Upright part; 102. Horizontal part; 12. Second magnetic core; 10. Single magnetic core; 18. Coil; 17. Mounting hole; 21. Upper shell; 210. Upper main surface groove; 213. Lower flange; 22. Lower shell; 220. Lower main surface groove; 222. Lower main surface inner groove; 223. Lower flange; 26. Upper convex edge; 41. Upper aluminum plate; 45. Lower aluminum plate; 62. Nut; 63. Screw; 65. Through hole; 13. First plastic shell; 14. Second plastic shell; 15. First shielding plate; 16. Second shielding plate. Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0022] Please see Figure 1 and Figure 2 This illustration shows a contactless wireless power supply system with a power take-off device 100 according to an embodiment of the present invention. The device includes a magnetic core, a coil 18, and a housing. The coil 18 integrates the magnetic core. The magnetic core includes a first group of magnetic cores 11 and a second group of magnetic cores 12. Each group of magnetic cores includes multiple individual magnetic cores 10 assembled side-by-side. The two groups of magnetic cores are mounted back-to-back by winding around the coil 18, and each group has passage slots on both sides to allow the circuit to pass through. The individual magnetic cores 10 in the two groups of magnetic cores 11 and 12 are substantially identical, but are symmetrically arranged during installation. The housing includes an upper shell 21 and a lower shell 22. There is a gap between the two groups of magnetic cores at the portion where the coil 18 is wound. The upper shell 21 and lower shell 22 are assembled by multiple fasteners, clamping the two groups of magnetic cores between them. The multiple fasteners pass side-by-side through the gap, and each fastener's two ends are fixedly connected to the upper shell 21 and lower shell 22 respectively.

[0023] Preferably, the outer surface of the upper shell 21 is covered with an upper aluminum plate 41, and the outer surface of the lower shell 22 is covered with a lower aluminum plate 45. The fasteners sequentially pass through the upper shell 21, lower shell 22, upper aluminum plate 41, lower aluminum plate 45, and the gap, thereby fixing the upper shell 21, lower shell 22, magnetic core, upper aluminum plate 41, and lower aluminum plate 45 together. Because the fasteners pass through the gap, they are less affected by magnetism.

[0024] like Figure 2 As shown, specifically, each single magnetic core 10 includes an upright portion 101 and two parallel horizontal portions 102. The two horizontal portions 102 are perpendicular to the upright portion 101 and are connected to each other at their upper and lower ends. The upright portion 101 and the two horizontal portions 102 are actually integrally formed structures, but for ease of description, this application divides them into three parts or three segments. Each single magnetic core 10 presents a frame shape or a shape similar to "[". Multiple single magnetic cores 10 are arranged side by side and combined into one piece, forming a long slot on the side to allow a circuit to pass through or slide through it.

[0025] Furthermore, the spacing is defined by the two upright portions 101, that is, the distance between the two upright portions 101. The two upright portions 101 are parallel and spaced apart, while the horizontal portions 102 in the two magnetic cores 11 and 12 extend in opposite directions to both sides.

[0026] In some specific embodiments, the coil 18 wraps around the two upright portions 101 along the length of the power line, and the two horizontal portions 102 of each single magnetic core 10 are located on the same side outside the coil 18. This "same side" refers to the same left or right side of the coil 18 when viewed horizontally. Vertically, the two horizontal portions 102 are located at the upper and lower ends outside the coil 18.

[0027] In some specific implementation plans, such as Figure 2 As shown, the coil 18 is shaped like a U-shape or a racetrack shape, and the height of the coil 18 is approximately equal to the height of the upright portion 101 or the same as the distance between the two horizontal portions 102 of the same single magnetic core 10; the magnetic core body is generally shaped like an I-beam. The winding height of the coil 18 is approximately equal to the height of the upright portion 101.

[0028] In some preferred embodiments, the two sets of magnetic cores are arranged back to back and spaced apart to form the spacing, the length of which is substantially the same as the length of the arrangement of the plurality of single magnetic cores or the length of the passage slot.

[0029] Furthermore, the fasteners are spaced apart along the arrangement direction of the multiple single magnetic cores 10, and the two sets of magnetic cores have a symmetrical structure, as shown in the figure, which is a left-right symmetrical structure. The fasteners are arranged at approximately uniform intervals on the vertical plane where the axis of symmetry of the two sets of magnetic cores is located, and the positional relationship between the fasteners and the multiple single magnetic cores 10 is basically one-to-one.

[0030] In some preferred embodiments, the outer surface of the upper shell 21 is provided with an upper main surface groove 210, and the upper aluminum plate 41 is embedded in the upper main surface groove. The outer surface of the lower shell 22 is provided with a lower main surface groove 220, and the lower aluminum plate 45 is embedded in the lower main surface groove 220. At least one end of the lower aluminum plate 45 extends out of the lower main surface groove 220 and is provided with at least one mounting hole 17 at the extended portion. In the figure, both ends of the lower aluminum plate 45 have an extension portion, and each extension portion is provided with two mounting holes 17. The inner surface of the upper shell 21 is provided with an upper main surface inner groove, and the entire upper surface of the magnetic core is embedded in the upper main surface inner groove. The inner surface of the lower shell 22 is provided with a lower main surface inner groove 222, and the entire lower surface of the magnetic core is embedded in the lower main surface inner groove 222.

[0031] Furthermore, the upper shell 21 has lower flanges 213 on at least two sides of its inner surface facing the magnetic core, and the lower flanges 213 on both sides are respectively engaged with the upper edges of the magnetic core. The lower shell 22 has upper flanges 223 on at least two sides of its inner surface facing the magnetic core, and the upper flanges 223 on both sides are respectively engaged with the lower edges of the magnetic core. The fasteners include nuts 62 and screws 63. The upper shell 21, lower shell 22, upper aluminum plate 41 and lower aluminum plate 45 are respectively provided with through holes 65. The screws 63 pass through the corresponding through holes 65 of the upper and lower shells 22 and the upper and lower aluminum plates 45 and are fastened by the nuts 62 to securely clamp the magnetic core.

[0032] In the aforementioned contactless wireless power supply system, the power collector 100 utilizes a spacing between the two sets of magnetic cores 11 and 12 to allow fasteners to pass through, effectively preventing the heating effect of wireless power supply eddy currents on fasteners (such as metal screws 63). This fixing method also saves space. Furthermore, adding a plastic shell between the upper and lower aluminum plates 41 and 45 and the magnetic core body reduces the impact of wireless power supply on the upper and lower aluminum plates 41 and 45. Moreover, the separate upper and lower aluminum plates facilitate fastening and effectively reduce the impact of the surrounding environment on the power collector in the application scenario. Additionally, this stacked installation structure is more stable, and the entire power collector 100 has a compact structure, is easy to assemble, and can adapt to a wider range of application scenarios. It can be widely used in mobile power collector devices such as semiconductor equipment, magnetic drives, linear motors, and automation equipment, demonstrating broad application prospects.

[0033] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. A power collector in a contactless wireless power supply system, comprising a magnetic core, a coil, and a housing, wherein the coil integrates the magnetic core, characterized in that, The magnetic core body includes a first set of magnetic cores and a second set of magnetic cores. Each set of magnetic cores includes multiple single magnetic cores assembled in parallel. The two sets of magnetic cores are installed back to back by winding a coil and each set has a passage groove on both sides to allow the line to pass through. The housing includes an upper housing and a lower housing. There is a gap between the two sets of magnetic cores at the part where the coil is wound. The gap is in the inner ring of the coil. The upper housing and the lower housing are assembled by multiple fasteners and the two sets of magnetic cores are clamped between the upper housing and the lower housing. The multiple fasteners pass through the gap side by side and the two ends of each fastener are respectively fixedly connected to the upper housing and the lower housing.

2. The power collector in the contactless wireless power supply system as described in claim 1, characterized in that, The outer surface of the upper shell is covered with an upper aluminum plate, the outer surface of the lower shell is covered with a lower aluminum plate, and the fasteners sequentially penetrate the upper shell, the lower shell, the upper aluminum plate, the lower aluminum plate, and the spacing.

3. The power collector in the contactless wireless power supply system as described in claim 1, characterized in that, Each single magnetic core includes an upright section and two parallel horizontal sections. The two horizontal sections are perpendicular to the upright section and are connected to each other at the upper and lower ends.

4. The power collector in the contactless wireless power supply system as described in claim 3, characterized in that, The spacing is defined by the two upright portions.

5. The power collector in the contactless wireless power supply system as described in claim 3, characterized in that, The coil wraps around the two vertical sections along the length of the power line, and the two horizontal sections of each single magnetic core are located on the same side outside the coil.

6. The power collector in the contactless wireless power supply system as described in claim 3, characterized in that, The coil is shaped like a U-shape or a racetrack shape, and the height of the coil is approximately equal to the height of the upright part or the same as the distance between the two horizontal parts of the same single magnetic core; the magnetic core body is shaped like an I-beam.

7. The power collector in the contactless wireless power supply system as described in claim 1, characterized in that, The two sets of magnetic cores are arranged back to back and spaced apart to form the spacing, the length of which is substantially the same as the length of the arrangement of multiple single magnetic cores or the length of the passage slot.

8. The power collector in the contactless wireless power supply system as described in claim 1, characterized in that, The fasteners are spaced apart along the direction of the arrangement of the multiple single magnetic cores. The two sets of magnetic cores are symmetrical structures. The fasteners are arranged at approximately uniform intervals on the vertical plane where the axis of symmetry of the two sets of magnetic cores is located. The fasteners and the single magnetic cores are in a one-to-one positional relationship.

9. The power collector in the contactless wireless power supply system as described in claim 2, characterized in that, The outer surface of the upper shell is provided with an upper main surface groove, and the upper aluminum plate is embedded in the upper main surface groove. The outer surface of the lower shell is provided with a lower main surface groove, and the lower aluminum plate is embedded in the lower main surface groove. At least one end of the lower aluminum plate extends out of the lower main surface groove and at least one mounting hole is provided at the extended part. The inner surface of the upper shell is provided with an upper main surface inner groove, and the entire upper surface of the magnetic core is embedded in the upper main surface inner groove. The inner surface of the lower shell is provided with a lower main surface inner groove, and the entire lower surface of the magnetic core is embedded in the lower main surface inner groove.

10. The power collector in the contactless wireless power supply system as described in claim 2, characterized in that, The upper shell has lower flanges on at least two sides of its inner surface facing the magnetic core, and the lower flanges on both sides are respectively engaged with the upper edges on both sides of the magnetic core. The lower shell has upper flanges on at least two sides of its inner surface facing the magnetic core, and the upper flanges on both sides are respectively engaged with the lower edges on both sides of the magnetic core. The fasteners include nuts and screws. The upper shell, the lower shell, the upper aluminum plate, and the lower aluminum plate are respectively provided with through holes. The screws pass through the corresponding through holes in the upper and lower shells and the upper and lower aluminum plates and are fastened by the nuts to securely clamp the magnetic core.

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