Charging coil assembly and electronic equipment

Abstract

The utility model provides a charging coil assembly and electronic equipment. The charging coil assembly comprises a magnetizer and a coil. The magnetizer is provided with a gap and comprises a first magnetic conductive part and a second magnetic conductive part which are located on the two sides of the gap. The first magnetic conductive part comprises a mounting surface, the mounting surface is located on one side, in the thickness direction of the charging coil assembly, of the first magnetic conductive part, and the coil is fixed to the mounting surface. When the electronic equipment is equipped with the shell with the magnet, the gap on the magnetizer can avoid the area with dense magnetic induction lines, so that the influence of the magnet on the magnetic saturation degree of the magnetizer is weakened, the charging interruption probability is reduced, and the coil heating is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless charging technology, and particularly to a charging coil assembly and an electronic device. Background Art

[0002] With the continuous development of the electronic device industry, wireless charging technology has gradually become popular. Wireless charging technology uses media such as magnetic fields to transmit electrical energy. A transmitting coil assembly is provided on a charging base, and a charging coil assembly is provided on an electronic device, and the charging of the electronic device is achieved through the cooperation of the coil assemblies.

[0003] Currently, to improve the user experience, an electronic device is equipped with a housing with a magnet, which is fixed to the charging base by magnetic force during the charging process. However, due to the setting of the magnet, the magnetic saturation degree of the magnetic conductive sheet in the charging coil is affected, and the magnetic flux it can receive is reduced, resulting in problems such as easy interruption of charging and heating of the coil during wireless charging. Utility Model Content

[0004] The present disclosure provides a charging coil assembly and an electronic device to solve related technical problems.

[0005] A first aspect of the present disclosure provides a charging coil assembly for use in an electronic device, including a magnetic conductor and a coil. The magnetic conductor is provided with a gap, and the magnetic conductor includes a first magnetic conduction portion and a second magnetic conduction portion located on both sides of the gap. The first magnetic conduction portion includes a mounting surface, and the mounting surface is located on one side of the first magnetic conduction portion in the thickness direction of the charging coil assembly, and the coil is fixed to the mounting surface.

[0006] Further, the first magnetic conduction portion further includes a first surface arranged along the thickness direction of the charging coil assembly, and the second magnetic conduction portion further includes a second surface arranged along the thickness direction of the charging coil assembly. The first surface and the second surface are arranged opposite to each other to form the gap.

[0007] Further, the first magnetic conduction portion is in a disc shape, the second magnetic conduction portion is in an annular shape, the first surface is arranged on the outer circumferential surface of the first magnetic conduction portion, and the second surface is arranged on the inner circumferential surface of the second magnetic conduction portion.

[0008] Further, the magnetic conductor further includes a conduction portion connecting the first magnetic conduction portion and the second magnetic conduction portion.

[0009] Further, the number of the conduction portions is set to be multiple, the gap is in an annular shape, and the multiple conduction portions are arranged at intervals along the circumferential direction of the gap.

[0010] Further, the first magnetic conduction portion and the second magnetic conduction portion are arranged staggeredly in the thickness direction of the charging coil assembly to form the gap.

[0011] Further, in the thickness direction of the charging coil assembly, the projections of the first magnetic conduction part and the second magnetic conduction part are connected.

[0012] Further, in the thickness direction of the charging coil assembly, the projection of the coil is located within the installation surface.

[0013] The second aspect of the present disclosure provides an electronic device, including the above-mentioned charging coil assembly.

[0014] The third aspect of the present disclosure provides an electronic device, including an electronic device main body, a housing, and the above-mentioned charging coil assembly. The charging coil assembly is arranged on the electronic device main body, and the housing is provided with a magnet.

[0015] Further, the magnet is annular. In the thickness direction of the charging coil assembly, the projection of the coil is located within the projection of the inner ring of the magnet.

[0016] The fourth aspect of the present disclosure provides an electronic device, including an electronic device main body, a magnet, and the above-mentioned charging coil assembly; the magnet is arranged on the electronic device main body, the magnetic conductor and the magnet are located on both sides of the coil; the magnetic conductor is arranged in alignment with the gap.

[0017] The technical solution provided by the present disclosure can at least achieve the following beneficial effects: When the electronic device is equipped with a housing with a magnet, the gap on the magnetic conductor can avoid the area where the magnetic induction lines are dense, weaken the influence of the magnet on the magnetic saturation degree of the magnetic conductor, reduce the probability of charging interruption, and reduce the heating of the coil.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing the embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0020] Figure 1 is a schematic diagram of an electronic device in an exemplary embodiment of the present disclosure;

[0021] Figure 2 is one of the schematic diagrams of a charging coil assembly in an exemplary embodiment of the present disclosure;

[0022] Figure 3 is Figure 2 a schematic diagram of the cooperation state of the charging coil assembly and the magnet in the shown embodiment;

[0023] Figure 4It is a schematic diagram of a magnetic conductor in an exemplary embodiment of the present disclosure;

[0024] Figure 5 It is the second schematic diagram of a charging coil assembly in an exemplary embodiment of the present disclosure;

[0025] Figure 6 It is the third schematic diagram of a charging coil assembly in an exemplary embodiment of the present disclosure;

[0026] Figure 7 It is a schematic diagram of the cooperation state between a charging coil assembly and a magnet in an exemplary embodiment of the present disclosure.

[0027] Explanation of the reference numerals in the drawings: magnetic conductor, 10; gap, 100; first magnetic part, 11; mounting surface, 111; first surface, 112; second magnetic part, 12; second surface, 121; conduction part, 13; coil, 20; electronic device, 30; electronic device main body, 31; housing, 32; magnet, 321. Detailed implementation manners

[0028] Here, the technical solutions in the embodiments (or "implementation manners") of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] If there are terms related to directional indication or positional relationship in the embodiments of the present disclosure (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present disclosure are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0030] To improve the user experience during wireless charging, an electronic device is equipped with a housing with a magnet. However, after the magnet is equipped, the magnetic saturation degree of the magnetic sheet in the charging coil assembly will be affected, and the magnetic flux it can receive from the transmitting coil assembly will decrease, resulting in problems such as easy charging interruption and coil heating during wireless charging.

[0031] Such as Figure 1As shown in the figure, the first aspect of the present disclosure provides a charging coil assembly, which is applied to an electronic device 30 and includes a magnetic conductor 10 and a coil 20. The magnetic conductor 10 is provided with a slit 100. The magnetic conductor 10 includes a first magnetic part 11 and a second magnetic part 12. The first magnetic part 11 and the second magnetic part 12 are located on both sides of the slit 100. The first magnetic part 11 includes a mounting surface 111, and the mounting surface 111 is located on one side of the first magnetic part 11 in the thickness direction of the charging coil assembly, and the coil 20 is fixed to the mounting surface 111.

[0032] When the electronic device 30 is sleeved with a housing with a magnet, the slit 100 on the magnetic conductor 10 can avoid the area where the magnetic induction lines are dense, weaken the influence of the magnet on the magnetic saturation degree of the magnetic conductor 10, reduce the probability of charging interruption during the charging process of the electronic device 30 and reduce the coil heating. The material of the magnetic conductor 10 can be nanocrystalline or the like, and the specific type of material is not limited as long as it can transmit magnetic flux.

[0033] The second aspect of the present disclosure provides an electronic device 30, which includes the above-mentioned charging coil assembly. When the user charges, a protective cover with a magnet can be equipped to realize the magnetic attraction fixation between the electronic device 30 and the charging base.

[0034] The third aspect of the present disclosure provides an electronic device 30, which includes an electronic device main body 31, a housing 32 and the above-mentioned charging coil assembly. The charging coil assembly is arranged on the electronic device main body 31, and the housing 32 is provided with a magnet 321. The magnet 321 is arranged on the housing 32 of the electronic device 30. When the user charges, the electronic device 30 can be directly placed on the charging base to realize magnetic attraction fixation. The housing 32 can be the back cover of the electronic device, and the specific type is not limited.

[0035] The fourth aspect of the present disclosure provides an electronic device, which may include an electronic device main body 31, a magnet 321, a housing 32 and the above-mentioned charging coil assembly. The magnet 321 is arranged on the electronic device main body 31, and the magnetic conductor 10 and the magnet 321 are located on both sides of the coil 20. The magnetic conductor 10 and the slit 100 are arranged in alignment so that the magnetic conductor 10 can avoid the area where the magnetic induction lines of the magnet 321 are dense through the slit 100. The magnet 321 is arranged inside the electronic device 30. When the user charges, the electronic device 30 can be directly placed on the charging base to realize magnetic attraction fixation.

[0036] Due to the reduction of the charging interruption probability and the reduction of the coil heating, the charging efficiency of the above-mentioned electronic device 30 is improved and the user experience is improved. The electronic device can be a mobile phone, a tablet computer, a wearable device, etc., and the specific type is not limited.

[0037] Such as Figure 2 and Figure 3As shown, in one embodiment, the first magnetic guiding portion 11 further includes a first surface 112 disposed along the thickness direction of the charging coil assembly, and the second magnetic guiding portion 12 further includes a second surface 121 disposed along the thickness direction. The first surface 112 and the second surface 121 are disposed opposite to each other to form a gap 100. Since the first surface 112 and the second surface 121 are disposed opposite to each other, the first magnetic guiding portion 11 and the second magnetic guiding portion 12 are flush with each other in the thickness direction, facilitating the installation of the magnetic guide 10.

[0038] The thicknesses of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 may be equal or unequal. When the thicknesses of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 are equal, the end faces on both sides thereof are correspondingly flush. That is: the end faces of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 facing the magnet 321 are flush, and the end faces of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 facing away from the magnet 321 are also flush.

[0039] When the thicknesses of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 are unequal, the end faces thereof are flush selectively. That is: the end faces of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 facing the magnet 321 are flush, or the end faces of the first magnetic guiding portion 11 and the second magnetic guiding portion 12 facing away from the magnet 321 are flush. The first magnetic guiding portion 11 and the second magnetic guiding portion 12 may assemble the flush end faces to other components.

[0040] In one embodiment, the first magnetic guiding portion 11 may be in a disc shape, and the second magnetic guiding portion 12 may be in an annular shape. The first surface 112 is disposed on the outer circumferential surface of the first magnetic guiding portion 11, and the second surface 121 is disposed on the inner circumferential surface of the second magnetic guiding portion 12. The outer diameter of the first magnetic guiding portion 11 may be 2 mm smaller than the inner diameter of the second magnetic guiding portion 12 to form a 2-mm-thick gap 100. The disc-shaped first magnetic guiding portion 11 and the annular second magnetic guiding portion 12 simplify the manufacturing process of the magnetic guide 10. When manufacturing, a gap 100 may be formed by cutting on a magnetic conductive material with an initial circular shape, thereby completing the manufacturing of the magnetic guide 10.

[0041] Meanwhile, since the first magnetic guiding portion 11 is a complete disc shape and the second magnetic guiding portion 12 is a continuous annular shape, the projected area of the magnetic guide 10 in the thickness direction of the charging coil assembly is increased, thereby increasing the magnetic flux of the magnetic guide 10 during charging and improving the wireless charging efficiency of the electronic device.

[0042] When the electronic device 30 performs wireless charging in a state without the magnet 321, although the existence of the gap 100 reduces the magnetic flux that the magnetic guide 10 can receive, the magnetic flux received by the magnetic guide 10 is compensated to a certain extent by increasing the projected area of the magnetic guide 10, enabling the electronic device 30 to also ensure a certain charging efficiency. Therefore, the electronic device 30 of the present disclosure has a good charging effect both in a state with a magnet and without a magnet.

[0043] The specific structural forms of the first magnetic conduction part 11 and the second magnetic conduction part 12 are not limited, and their structures can be comprehensively considered according to the magnetic flux required by the magnetic conductor 10 and the magnetic induction line distribution of the magnet 321. The magnetic conductor 10 can form a gap 100 in the area where the magnetic induction lines are dense and retain the solid part of the magnetic conductor 10 in the area where the magnetic induction lines are sparse, so as to balance the charging efficiency of the electronic device 30 in the two states of being equipped with the magnet 321 and not being equipped with the magnet 321.

[0044] Specifically, as Figure 4 shown, in an embodiment, the first magnetic conduction part 11 and the second magnetic conduction part 12 can be semicircular. The sides of the first magnetic conduction part 11 and the second magnetic conduction part 12 are arranged opposite to each other to form a gap 100. Correspondingly, the magnet 321 can be a bar magnet and is arranged on the housing 32 opposite to the gap 100, so as to realize the avoidance of the magnetic conductor 10 for the dense magnetic induction lines.

[0045] As Figure 5 shown, in an embodiment, the magnetic conductor 10 may further include a conduction part 13 connecting the first magnetic conduction part 11 and the second magnetic conduction part 12. By setting the conduction part 13, the first magnetic conduction part 11 and the second magnetic conduction part 12 are magnetically conducted, increasing the magnetic flux that the magnetic conductor 10 can receive and improving the wireless charging efficiency of the electronic device 30. Specifically, both ends of the conduction part 13 can be connected to the first surface 112 and the second surface 121, and the specific connection positions of the conduction part 13 with the first magnetic conduction part 11 and the second magnetic conduction part 12 are not limited.

[0046] The number of the conduction parts 13 can be set to one, and the gaps 100 are continuously arranged. This setting reduces the processing difficulty of the magnetic conductor 10. When processing the magnetic conductor 10, the cutting tool only needs one cutting operation to form the gap 100 on the magnetic conductor 10.

[0047] In the embodiment where the number of the conduction parts 13 is set to one, the proportion of the connection area between the first magnetic conduction part 11 and the second magnetic conduction part 12 in their respective wholes does not exceed 10%, so as to avoid losing the avoidance effect of the gap 100 on the magnetic induction lines due to too many magnetically conductive positions. In this embodiment, the magnet 321 in the housing 32 is vacant near the conduction part 13 to avoid the dense magnetic induction lines passing through the conduction part 13 and prevent the magnetic saturation degree of the magnetic conductor 10 from being affected.

[0048] In an embodiment, as Figure 6As shown, the number of conduction parts 13 can be set to multiple, and the gap 100 is arc-shaped. The multiple conduction parts 13 are arranged at intervals along the circumferential direction of the gap 100. When the electronic device 30 is not equipped with the magnet 321, the electronic device 30 cannot ensure the alignment accuracy with the transmitting coil on the charging base. Therefore, by setting the conduction parts 13 to be multiple and arranging them circumferentially, even if the position of the electronic device 30 on the charging base deviates, there is always a conduction part 13 that can absorb the magnetic field generated by the transmitting coil, thereby ensuring the magnetic flux of the magnetic conductor 10 and improving the charging effect of the electronic device.

[0049] In one embodiment, as Figure 7 shown, the first magnetic conduction part 11 and the second magnetic conduction part 12 are arranged staggeredly in the thickness direction of the charging coil assembly to form the gap 100. Specifically, the second magnetic conduction part 12 can be arranged relative to the first magnetic conduction part 11 away from the magnet 321, which can further reduce the influence of the magnet 321 on the magnetic saturation degree of the magnetic conductor 10. The maximum distance between the first magnetic conduction part 11 and the second magnetic conduction part 12 in the thickness direction of the electronic device can be 2 mm, so as to avoid being unable to receive the magnetic field generated by the transmitting end of the charging base after the distance is too far.

[0050] In this embodiment, in the thickness direction of the charging coil assembly, the projections of the first magnetic conduction part 11 and the second magnetic conduction part 12 are connected. This setting increases the projected area of the overall magnetic conductor 10 in the thickness direction of the charging coil assembly and improves the charging efficiency of the electronic device 30.

[0051] In the embodiment where the first magnetic conduction part 11 is disk-shaped and the second magnetic conduction part 12 is annular, the diameter of the first magnetic conduction part 11 is the same as the inner diameter of the second magnetic conduction part 12, and the projections of the first magnetic conduction part 11 and the second magnetic conduction part 12 in the thickness direction can form a complete circle.

[0052] In one embodiment, in the thickness direction of the charging coil assembly, the projection of the coil 20 can be located within the mounting surface 111. The first magnetic conduction part 11 covers the coil 20, which increases the area of the magnetic conductor 10, increases the magnetic flux of the magnetic conductor 10 in wireless charging, and improves the charging efficiency of wireless charging.

[0053] In one embodiment, the magnet 321 can be annular. In the thickness direction of the charging coil assembly, the projection of the coil 20 is located within the projection of the inner circle of the magnet 321. Since the coil 20 is assembled on the mounting surface 111 of the first magnetic conduction part 11, the magnet 321 is arranged around the coil 20, so that the magnet 321 is close to the edge of the first magnetic conduction part 11. The edge of the first magnetic conduction part 11 is close to the gap 100, so that the inner circle of the magnet 321 is arranged close to the gap 100. The magnetic induction line distribution at the inner circle of the magnet 321 is relatively dense, and the inner circle is adjacent to the gap 100, which further reduces the influence of the magnet 321 on the saturation degree of the magnetic conductor 10 and improves the wireless charging effect of the electronic device 30 in the state equipped with the magnet 321.

[0054] In the embodiment where the first magnetic conduction part 11 is disc-shaped and the second magnetic conduction part 12 is annular, the first magnetic conduction part 11, the second magnetic conduction part 12 and the annular magnet 321 can be coaxially arranged, and the inner diameter of the magnet 321 is equal to the inner diameter of the second magnetic conduction part 12, so that the inner circle of the magnet 321 is arranged in alignment with the gap 100 to avoid magnetic induction lines.

[0055] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present disclosure is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A charging coil assembly, applied to electronic equipment, characterized in that: include: Magnetic conductor and coil; The magnetic conductor is provided with a gap, and the magnetic conductor comprises a first magnetic conductor part and a second magnetic conductor part located on both sides of the gap; The first magnetic conductive portion includes a mounting surface, the mounting surface is located on one side of the first magnetic conductive portion in the thickness direction of the charging coil assembly, and the coil is fixed to the mounting surface.

2. The charging coil assembly according to claim 1, characterized in that: The first magnetic conductive portion further includes a first surface arranged along the thickness direction of the charging coil assembly, and the second magnetic conductive portion further includes a second surface arranged along the thickness direction of the charging coil assembly. The first surface and the second surface are arranged opposite to each other to form the gap.

3. The charging coil assembly according to claim 2, characterized in that: The first magnetic conductive portion is in a disc shape, the second magnetic conductive portion is in a ring shape, the first surface is arranged on the outer circumferential surface of the first magnetic conductive portion, and the second surface is arranged on the inner circumferential surface of the second magnetic conductive portion.

4. The charging coil assembly according to claim 2, characterized in that: The magnetic conductor further includes a conductive portion connecting the first magnetic conductive portion and the second magnetic conductive portion.

5. The charging coil assembly according to claim 4, characterized in that: The number of the conducting parts is set to be multiple, the gap is annular, and the multiple conducting parts are arranged at intervals along the circumference of the gap.

6. The charging coil assembly according to claim 1, characterized in that: The first magnetic conductive portion and the second magnetic conductive portion are staggered in a thickness direction of the charging coil assembly to form the gap.

7. The charging coil assembly according to claim 6, characterized in that: In the thickness direction of the charging coil assembly, the first magnetic conductive portion is connected to the projection of the second magnetic conductive portion.

8. The charging coil assembly according to claim 1, characterized in that: In the thickness direction of the charging coil assembly, the projection of the coil is located within the mounting surface.

9. An electronic device, characterized in that: include: A charging coil assembly as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: include: An electronic device body, a shell, and a charging coil assembly as described in any one of claims 1 to 8, wherein the charging coil assembly is arranged on the electronic device body, and the shell is provided with a magnet.

11. The electronic device according to claim 10, characterized in that: The magnet is annular in shape, and in the thickness direction of the charging coil assembly, the projection of the coil is located within the projection of the inner circle of the magnet.

12. An electronic device, characterized in that: include: An electronic device body, a magnet, and a charging coil assembly as described in any one of claims 1 to 8; the magnet is arranged on the electronic device body, and the magnetic conductor and the magnet are located on both sides of the coil; the magnetic conductor is arranged in alignment with the gap.

Images