Wireless power transmission assembly and wireless power transmission system

Abstract

The invention provides a wireless electric energy transmission assembly and a wireless electric energy transmission system, the wireless electric energy transmission assembly comprises a magnetic core, a winding and at least two circuit assemblies, the circuit assemblies are electrically connected with the winding, and the two adjacent circuit assemblies are arranged at intervals; wherein the winding and the circuit assembly are located on different sides of the magnetic core respectively. According to the wireless electric energy transmission assembly, the circuit assembly which is integrally arranged in the related technology is split into the at least two circuit assemblies, the size and height of the single circuit assembly can be reduced, and the overall size of the wireless electric energy transmission assembly is further reduced. The circuit assembly and the winding are arranged on different sides of the magnetic core, shielding is formed by the magnetic core, eddy current loss of the circuit assembly can be reduced, and extra shielding measures do not need to be added.

Description

Technical Field

[0001] This application relates to the field of wireless power transmission technology, and in particular to a wireless power transmission component and a wireless power transmission system. Background Technology

[0002] A wireless power transfer system is a system that uses principles such as electromagnetic induction, magnetic resonance, radio waves, or electric field coupling to wirelessly transmit electrical energy from a transmitting unit to a receiving unit. Both the transmitting and receiving units of a wireless power transfer system are equipped with wireless power transfer components, which include a power transfer controller, power transfer-related circuit components, and a coil (including a magnetic core and windings). Typically, the circuit components are housed within the controller and then connected to the coil via cables. However, this method results in a high voltage difference between the circuit components and the coil, requiring high insulation of the cables.

[0003] To address these issues, related technologies integrate circuit components inside the cable reel to reduce voltage on the cable. However, due to the large size of the circuit components, adding them to the reel increases its thickness and volume. Furthermore, without additional shielding, the circuit components are prone to generating eddy current losses within the reel. Summary of the Invention

[0004] In order to overcome the above-mentioned defects in the related technologies, the purpose of this application is to provide a wireless power transmission component and a wireless power transmission system. This application is beneficial to reducing the size of the coil integrated circuit component and reducing the eddy current loss of the circuit component.

[0005] On one hand, this application provides a wireless power transmission component, including:

[0006] magnetic core;

[0007] Winding;

[0008] At least two circuit components are provided, the circuit components being electrically connected to the winding, and adjacent circuit components are spaced apart.

[0009] The winding and the circuit assembly are located on different sides of the magnetic core.

[0010] In one possible implementation, the magnetic core includes a first side and a second side opposite each other along a first direction, the winding is located on the first side of the magnetic core, and the circuit assembly is located on the second side of the magnetic core.

[0011] In one possible implementation, the second side of the magnetic core is provided with at least two first mounting slots, and along the second direction, the first mounting slots are disposed close to the edge of the magnetic core, and at least two of the circuit components are respectively disposed in the at least two first mounting slots;

[0012] Wherein, the first direction and the second direction are perpendicular to each other.

[0013] In one possible implementation, at least four of the circuit components are included, and at least four of the first mounting slots are provided on the second side of the magnetic core. In a plane perpendicular to the first direction, the four first mounting slots are respectively located at the four corners of the magnetic core, and the four circuit components are respectively located in the four first mounting slots.

[0014] In one possible implementation, a lower housing is also included, wherein the lower housing has a clearance groove on the side facing the magnetic core, the clearance groove corresponding to the first mounting groove.

[0015] In one possible implementation, a second mounting groove is provided on the second side of the magnetic core, and the second mounting groove is located in the middle of the magnetic core along the second direction, and at least two of the circuit components are disposed in the second mounting groove;

[0016] Wherein, the first direction and the second direction are perpendicular to each other.

[0017] In one possible implementation, the magnetic core includes a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction, the winding is located on the first side of the magnetic core, and the circuit assembly is located on the third side and / or the fourth side of the magnetic core.

[0018] Wherein, the first direction and the second direction are perpendicular to each other.

[0019] In one possible implementation, the circuit components are arranged parallel to the first direction.

[0020] In one possible implementation, at least four of the circuit components are included, located at the four corners of the magnetic core in a plane perpendicular to the first direction, with gaps formed between the circuit components and the magnetic core.

[0021] In one possible implementation, the circuit assembly is also located on a second side of the magnetic core, the second side of the magnetic core having a second mounting groove along a second direction, the second mounting groove being located in the middle of the magnetic core, and at least one of the circuit assemblies being disposed in the second mounting groove.

[0022] In one possible implementation, the magnetic core includes a center post and side posts, a third mounting groove is formed between the center post and the side posts, and at least a portion of the winding is located within the third mounting groove and arranged around the center post.

[0023] In one possible implementation, the enclosure further includes an upper housing and a lower housing opposite each other along a first direction, the upper housing being an insulating housing and the lower housing being a metal housing;

[0024] The upper housing is provided with a winding groove, at least a portion of which is located within the third mounting groove. The winding is located within the winding groove, and an insulating pad is provided at the opening of the winding groove.

[0025] In one possible implementation, the magnetic core is a spliced ​​magnetic core.

[0026] In one possible implementation, the input and output wires of the winding are disposed within the splicing gap of the spliced ​​magnetic core.

[0027] On the other hand, this application provides a wireless power transmission system, including a transmitting unit and a receiving unit, the transmitting unit and the receiving unit being communicatively connected, and at least one of the transmitting unit and the receiving unit including any of the wireless power transmission components described above.

[0028] This application provides a wireless power transfer component and a wireless power transfer system. The wireless power transfer component includes a magnetic core, a winding, and at least two circuit components. The circuit components are electrically connected to the winding, and adjacent circuit components are spaced apart. The winding and circuit components are located on different sides of the magnetic core. By dividing the integrally formed circuit component in related technologies into at least two circuit components, this application reduces the volume and height of a single circuit component, thereby reducing the overall volume of the wireless power transfer component. Furthermore, by arranging the circuit components and the winding on different sides of the magnetic core, the magnetic core forms a shield, which helps reduce eddy current losses in the circuit components, eliminating the need for additional shielding measures. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A simplified structural diagram of a wireless power transmission component provided in an embodiment of this application;

[0031] Figure 2 A simplified structural diagram of a wireless power transmission component provided in another embodiment of this application;

[0032] Figure 3 A simplified structural diagram of a wireless power transmission component provided in another embodiment of this application;

[0033] Figure 4 A top view of a wireless power transmission component provided in an embodiment of this application;

[0034] Figure 5 A top view of a wireless power transmission component provided in another embodiment of this application.

[0035] Figure label:

[0036] 100 - Magnetic core; 101 - First mounting slot; 102 - Second mounting slot; 103 - Third mounting slot; 104 - Joint gap; 110 - Center post; 120 - Side post; 130 - Sub-core;

[0037] 200-winding;

[0038] 300 - Circuit components;

[0039] 400 - Lower housing; 410 - Clearance groove;

[0040] 500 - Upper housing; 510 - Winding groove; 520 - Insulating pad. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0042] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] As described in the background section, the related technology integrates the circuit components inside the coil. However, since the circuit components are relatively large, adding more circuit components to the coil can easily increase the size of the coil, and the circuit components are prone to eddy current losses inside the coil.

[0044] In view of this, the embodiments of this application aim to provide a wireless power transmission component and a wireless power transmission system. By splitting the circuit component, which is integrally arranged in the related art, into at least two circuit components, it is beneficial to reduce the volume and height of a single circuit component, thereby reducing the overall volume of the wireless power transmission component. Furthermore, the circuit components and windings are arranged on different sides of the magnetic core, and the magnetic core forms a shield, which helps to reduce the eddy current loss of the circuit components, eliminating the need for additional shielding measures.

[0045] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can gain a more detailed understanding of the contents of this application.

[0046] Please refer to Figures 1-5 This embodiment provides a wireless power transmission component, including:

[0047] The magnetic core 100 includes a central post 110 and side posts 120, which can be connected, for example, by adhesive bonding. In other embodiments of this invention, the central post 110 and side posts 120 can also be formed integrally.

[0048] The winding 200 can be wound around the central post 110 of the magnetic core 100, or the winding 200 can be located on one side of the magnetic core 100, that is, placed on the surface of the magnetic core 100.

[0049] At least two circuit components 300 are electrically connected to the winding 200, for example, via cables. Adjacent circuit components 300 are spaced apart to reduce interference. Taking a circuit component 300 including a compensation capacitor and / or compensation inductor as an example, it is understood that the compensation capacitors and / or compensation inductors in the at least two circuit components 200 in this embodiment can be connected in series, and the series-connected compensation capacitors and / or compensation inductors are the same as the integrally arranged compensation capacitors and / or compensation inductors in related technologies. This reduces the volume of a single compensation capacitor and / or compensation inductor, thus making the volume of a single circuit component 300 smaller than the volume of an integrally arranged circuit component in related technologies.

[0050] The winding 200 and the circuit assembly 300 are located on different sides of the magnetic core 100; that is, the winding 200 and the circuit assembly 300 are separated by the magnetic core 100, and the magnetic core 100 can form a shield to reduce the eddy current loss of the circuit assembly 300.

[0051] As described above, this embodiment, by dividing the integrally formed circuit component 300 in related technologies into at least two circuit components 300, helps to reduce the volume and height of a single circuit component 300, thereby reducing the overall volume of the wireless power transmission component. Furthermore, since the circuit component 300 and the winding 200 are located on different sides of the magnetic core 100, and the magnetic core 100 forms a shield, it helps to reduce eddy current losses in the circuit component 300, eliminating the need for additional shielding measures.

[0052] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the magnetic core 100 includes a first side and a second side opposite to each other along a first direction (i.e., the vertical direction shown in the figure). The winding 200 is located on the first side of the magnetic core 100, and the circuit assembly 300 is located on the second side of the magnetic core 100.

[0053] With the above structure, the winding 200 and the circuit assembly 300 are separated by the magnetic core 100, which can form a shield to reduce the eddy current loss of the circuit assembly 300.

[0054] In this embodiment, the magnetic core 100 includes a central post 110 and a side post 120. A third mounting groove 103 is formed between the central post 110 and the side post 120. At least a portion of the winding 200 is located in the third mounting groove 103 and is arranged around the central post 110.

[0055] Alternatively, the third mounting groove 103 may not be provided on the first side of the magnetic core 100, and the winding 200 may be located on the surface of the first side of the magnetic core 100.

[0056] Please continue to refer to Figure 1 In one possible embodiment, the second side of the magnetic core 100 is provided with at least two first mounting slots 101. Along the second direction (i.e., the horizontal direction shown in the figure), the first mounting slots 101 are disposed near the edge of the magnetic core 100; for example, the first mounting slots 101 may be disposed on the side posts 120 of the magnetic core 100. At least two circuit components 300 are respectively disposed within the at least two first mounting slots 101. The first direction and the second direction are perpendicular to each other.

[0057] In this embodiment, by providing a first mounting groove 101 on the side post 120 and placing the circuit assembly 300 within the first mounting groove 101, it is beneficial to reduce the height of the wireless power transmission assembly in the first direction, thereby reducing the overall volume of the wireless power transmission assembly. For example, the circuit assembly 300 can be entirely located within the first mounting groove 101, meaning the height of the circuit assembly 300 in the first direction will not exceed the height of the first mounting groove 101, thus ensuring that the arrangement of the circuit assembly 300 does not increase the overall volume of the wireless power transmission assembly.

[0058] Please continue to refer to Figure 4 , Figure 4 For example, it could be Figure 1 The diagram shows a top view of the wireless power transfer assembly. Further, in this embodiment, the wireless power transfer assembly may include at least four circuit components 300, and the corresponding magnetic core 100 has at least four first mounting slots 101 on its second side. In a plane perpendicular to the first direction (i.e.... Figure 4 In the plane shown, four first mounting slots 101 are located at the four corners of the magnetic core 100, and four circuit components 300 are located in the four first mounting slots 101.

[0059] For example, in this embodiment, the four circuit components 300 may include two compensation capacitors and two compensation inductors. For instance, the two circuit components 300 located at the top of the figure may be compensation capacitors, and the two circuit components 300 located at the bottom of the figure may be compensation inductors. The two compensation capacitors are connected in series, and their capacitance values ​​are the same as those of the overall compensation capacitors in related technologies. The two compensation inductors are connected in series, and their inductance values ​​are the same as those of the overall compensation inductors in related technologies. This allows the volume of a single circuit component 300 to be smaller than the volume of the overall circuit components in related technologies. Furthermore, the four circuit components 300 are respectively disposed in the four first mounting slots 101 on the magnetic core 100, thereby ensuring that the height of the circuit components 300 does not exceed the height of the magnetic core 100, and ensuring that the arrangement of the four circuit components 300 does not increase the overall volume of the wireless power transmission component.

[0060] Please continue to refer to Figure 1 In this embodiment, the wireless power transmission component also includes a housing, which includes a lower housing 400. The lower housing 400 has a clearance groove 410 on the side facing the magnetic core 100, and the clearance groove 410 corresponds to the first mounting groove 101.

[0061] For example, the outer casing of this embodiment can be made of metal to ensure that the outer casing has sufficient strength. The clearance groove 410 provided on the lower casing 400 can be used to accommodate part of the circuit component 300 in the first mounting groove 101. When the height of the circuit component 300 exceeds the first mounting groove 101, part of the circuit component 300 can be located in the clearance groove 410, so that the sum of the heights of the overall structure formed by the first mounting groove 101, the circuit component 300 and the clearance groove 410 in the first direction is consistent with the height of the rest of the wireless power transmission component. The height of the wireless power transmission component will not increase due to the setting of the circuit component 300, which helps to reduce the overall volume of the wireless power transmission component.

[0062] Please continue to refer to Figure 2 In another possible embodiment, a second mounting groove 102 is provided on the second side of the magnetic core 100. Along the second direction (i.e., the horizontal direction shown in the figure), the second mounting groove 102 is located in the middle of the magnetic core 100; for example, the second mounting groove 102 can be disposed on the central post 110 of the magnetic core 100. At least two circuit components 300 are disposed within the second mounting groove 102. The first direction and the second direction are perpendicular to each other.

[0063] In this embodiment, by providing a second mounting slot 102 on the central column 110, all circuit components 300 are placed within the second mounting slot 102, which helps to reduce the height of the wireless power transmission component in the first direction, thereby reducing the overall volume of the wireless power transmission component. For example, all circuit components 300 can be located within the second mounting slot 102, meaning the height of the circuit components 300 in the first direction will not exceed the height of the second mounting slot 102, thus ensuring that the arrangement of the circuit components 300 does not increase the overall volume of the wireless power transmission component.

[0064] Please continue to refer to Figure 3 In another possible embodiment, the magnetic core 100 includes a first side and a second side opposite each other along a first direction (i.e., the vertical direction shown in the figure), and a third side and a fourth side opposite each other along a second direction (i.e., the horizontal direction shown in the figure). The winding 200 is located on the first side of the magnetic core 100, and the circuit assembly 300 is located on the third and / or fourth side of the magnetic core 100. The first direction and the second direction are perpendicular to each other.

[0065] In this embodiment, the magnetic core 100 includes a central post 110 and a side post 120. A third mounting groove 103 is formed between the central post 110 and the side post 120. At least a portion of the winding 200 is located in the third mounting groove 103 and is arranged around the central post 110.

[0066] With the above structure, the winding 200 and the circuit assembly 300 can be separated by the third mounting slot 103, and the magnetic core 100 can form a shield to reduce the eddy current loss of the circuit assembly 300.

[0067] In this embodiment, the circuit component 300 can be arranged parallel to the first direction. That is, the circuit component 300 is parallel to the magnetic field direction, and the projected area of ​​the circuit component 300 in the plane perpendicular to the first direction is small, which helps to reduce eddy current losses.

[0068] Furthermore, in this embodiment, the wireless power transmission component may include at least four circuit components 300. In a plane perpendicular to the first direction, the four circuit components 300 are respectively located at the four corners of the magnetic core 100, and a gap is formed between the circuit components 300 and the magnetic core 100.

[0069] For example, in this embodiment, the four circuit components 300 may include two compensation capacitors and two compensation inductors. For instance, the two circuit components 300 located at the top of the diagram may be compensation capacitors, and the two circuit components 300 located at the bottom of the diagram may be compensation inductors. The two compensation capacitors are connected in series, and their capacitance values ​​are the same as those of the overall compensation capacitors in related technologies. The two compensation inductors are also connected in series, and their inductance values ​​are the same as those of the overall compensation inductors in related technologies. This allows the volume of a single circuit component 300 to be smaller than the volume of the overall circuit components in related technologies. Furthermore, the four circuit components 300 are respectively located at the corners of the magnetic core 100 and are all arranged parallel to the magnetic field direction, which helps to reduce the eddy current losses of the circuit components 300.

[0070] Please continue to refer to Figure 3 In this embodiment, the circuit assembly 300 is also located on the second side of the magnetic core 100, and the second side of the magnetic core 100 is provided with a second mounting groove 102; that is, this embodiment may also provide a fifth circuit assembly 300, which is disposed in the second mounting groove 102. Along the second direction, the second mounting groove 102 is located in the middle of the magnetic core 100, for example, the second mounting groove 102 may be disposed on the central post 110 of the magnetic core 100; at least one circuit assembly 300 is disposed in the second mounting groove 102.

[0071] In this embodiment, by providing a second mounting groove 102 on the central column 110 and placing at least one circuit component 300 within the second mounting groove 102, it is beneficial to reduce the height of the wireless power transmission component in the first direction, thereby reducing the overall volume of the wireless power transmission component. This embodiment can further increase the number of circuit components 300 (providing at least five circuit components 300), reducing the volume of a single circuit component 300.

[0072] Please continue to refer to Figures 1-3 The wireless power transmission component of this embodiment also includes a housing, which includes an upper housing 500 and a lower housing 400 that are opposite to each other along a first direction, wherein the upper housing 500 is an insulating housing and the lower housing 400 is a metal housing.

[0073] The upper housing 500 is provided with a winding groove 510, at least part of the winding groove 510 is located in the third mounting groove 103, the winding 200 is located in the winding groove 510, and an insulating pad 520 is also provided at the opening of the winding groove 510.

[0074] In other words, this embodiment provides a winding groove 510 on the upper housing 500 and places the winding 200 within the winding groove 510, while using an insulating pad 520 to seal the opening of the winding groove 510 to ensure the insulation of the winding 200. This eliminates the need for additional winding supports, which helps reduce the height and volume of the wireless power transmission assembly.

[0075] Please continue to refer to Figure 5 In one possible implementation, the magnetic core 100 of this embodiment can be a spliced ​​magnetic core, which can be combined into a magnetic core 100 of suitable length and shape as needed to adapt to the needs of complex scenarios.

[0076] Furthermore, in this embodiment, the input and output wires of the winding 200 are disposed within the splicing gap 104 of the spliced ​​magnetic core. For example, as shown... Figure 5 As shown, the magnetic core 100 may include multiple sub-cores 130, and a splicing gap 104 is formed between two adjacent sub-cores 130. The incoming and outgoing wires of the winding 200 can be set in the gap, thereby reducing the additional installation height caused by the incoming and outgoing wires of the winding 200, which is conducive to further reducing the height and volume of the wireless power transmission component.

[0077] This embodiment also provides a wireless power transmission system, including a transmitting unit and a receiving unit, which are communicatively connected, and at least one of the transmitting unit and the receiving unit includes the aforementioned wireless power transmission component.

[0078] The wireless power transmission system of this embodiment uses the aforementioned wireless power transmission components, with the circuit components integrated inside the coil. This reduces the voltage of the cable between the controller and the coil. By splitting the circuit components, which are integrally arranged in related technologies, into at least two circuit components, it is beneficial to reduce the volume and height of a single circuit component, thereby reducing the overall volume of the wireless power transmission system. At the same time, the circuit components and windings are arranged on different sides of the magnetic core, and the magnetic core forms a shield, which helps to reduce eddy current losses in the circuit components, improve power transmission efficiency, and eliminates the need for additional shielding measures.

[0079] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0080] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0081] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0082] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0083] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wireless power transfer assembly, characterized by, The wireless power transmission assembly comprises: a magnetic core; a winding; at least two circuit components, which are electrically connected with the winding, and two adjacent circuit components are spaced apart; wherein the winding and the circuit components are located on different sides of the magnetic core.

2. The wireless power transfer assembly of claim 1, wherein, The magnetic core comprises a first side and a second side opposite to each other along a first direction, the winding is located on the first side of the magnetic core, and the circuit components are located on the second side of the magnetic core.

3. The wireless power transfer assembly of claim 2, wherein, The second side of the magnetic core is provided with at least two first mounting grooves, and the first mounting grooves are arranged close to the edges of the magnetic core along a second direction, and at least two circuit components are arranged in the at least two first mounting grooves respectively. The first direction is perpendicular to the second direction.

4. The wireless power transfer assembly of claim 3, wherein, The wireless power transmission assembly comprises at least four circuit components, and the second side of the magnetic core is provided with at least four first mounting grooves, and the four first mounting grooves are located at the four corners of the magnetic core respectively in a plane perpendicular to the first direction, and the four circuit components are located in the four first mounting grooves respectively.

5. The wireless power transfer assembly of claim 4, wherein, The wireless power transmission assembly further comprises a lower shell, and the side of the lower shell facing the magnetic core is provided with a avoiding groove corresponding to the first mounting groove.

6. The wireless power transfer assembly of claim 2, wherein, The second side of the magnetic core is provided with a second mounting groove, and the second mounting groove is located in the middle of the magnetic core along the second direction, and at least two circuit components are arranged in the second mounting groove. The first direction is perpendicular to the second direction.

7. The wireless power transfer assembly of claim 1, wherein, The magnetic core comprises a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction, the winding is located on the first side of the magnetic core, and the circuit components are located on the third side and / or the fourth side of the magnetic core. The first direction is perpendicular to the second direction.

8. The wireless power transfer assembly of claim 7, wherein, The circuit components are arranged parallel to the first direction.

9. The wireless power transfer assembly of claim 8, wherein, The wireless power transmission assembly comprises at least four circuit components, and the four circuit components are located at the four corners of the magnetic core respectively in a plane perpendicular to the first direction, and a gap is formed between the circuit components and the magnetic core.

10. The wireless power transfer assembly of claim 7, wherein, The circuit components are also located on the second side of the magnetic core, and the second side of the magnetic core is provided with a second mounting groove, and the second mounting groove is located in the middle of the magnetic core along the second direction, and at least one circuit component is arranged in the second mounting groove.

11. The wireless power transfer assembly of any one of claims 1-10, wherein, The magnetic core comprises a middle column and a side column, and a third mounting groove is formed between the middle column and the side column, and at least part of the winding is arranged in the third mounting groove and surrounds the middle column.

12. The wireless power transfer assembly of claim 11, wherein, The wireless power transmission assembly further comprises a shell, and the shell comprises an upper shell and a lower shell opposite to each other along a first direction, the upper shell is an insulating shell, and the lower shell is a metal shell. The upper shell is provided with a winding groove, at least part of the winding groove is located in the third mounting groove, the winding is located in the winding groove, and an insulating pad is further arranged at the opening of the winding groove.

13. The wireless power transfer assembly of claim 1, wherein, The magnetic core is a spliced magnetic core.

14. The wireless power transfer assembly of claim 13, wherein, The incoming line and the outgoing line of the winding are arranged in the splicing gap of the spliced magnetic core.

15. A wireless power transfer system, characterized by, The wireless power transmission assembly comprises a transmitting unit and a receiving unit, the transmitting unit and the receiving unit are communicatively connected, and at least one of the transmitting unit and the receiving unit comprises the wireless power transmission assembly according to any one of claims 1-14.

Images