Wireless charging ground pile and charging system

Abstract

The utility model provides a wireless charging ground pile and a charging system, and relates to the technical field of wireless charging equipment, the wireless charging ground pile comprises a shell body, a wireless charging coil assembly, a circuit control board and a connecting piece; an accommodating cavity is formed in the shell body; the circuit control board is fixed in the accommodating cavity; the wireless charging coil assembly is installed in the containing cavity through the connecting piece, the wireless charging coil assembly covers the circuit control board in the depth direction of the containing cavity, and the wireless charging coil assembly and the circuit control board are arranged in a spaced mode. According to the wireless charging ground pile provided by the utility model, the components in the wireless charging ground pile are relatively reasonably arranged, so that the balance of the wireless charging ground pile in volume and heat dissipation performance can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging equipment, and in particular to a wireless charging ground pile and a charging system. Background Art

[0002] At present, with the development of electric bicycles, the charging method of some electric bicycles has been changed to wireless charging. Specifically, wireless charging piles are pre-buried in the ground. When the electric bicycle is parked in place, the wireless receiving device on the electric bicycle cooperates with the wireless charging pile to realize wireless transmission of electric energy.

[0003] In existing technologies, the layout of components in wireless charging piles presents certain issues, impacting the balance between device size and heat dissipation performance. Specifically, the wireless charging coil and circuit control board are arranged horizontally. Because they occupy a large horizontal space, this increases the horizontal space required for the wireless charging pile. Furthermore, the larger horizontal area means a longer heat dissipation path, making it difficult to dissipate heat quickly and resulting in poor heat dissipation. Utility Model Content

[0004] The problem solved by the utility model is how to reasonably arrange the components in the wireless charging pile to achieve a balance between the volume and heat dissipation performance of the wireless charging pile.

[0005] In the first aspect, the utility model provides a wireless charging ground pile, comprising a shell body, a wireless charging coil assembly, a circuit control board and a connector; a housing cavity is provided inside the shell body; the circuit control board is fixed in the housing cavity; the wireless charging coil assembly is installed in the housing cavity through the connector, and along the depth direction of the housing cavity, the wireless charging coil assembly covers the circuit control board and is spaced apart from the circuit control board.

[0006] Optionally, there are multiple connecting members, and the multiple connecting members are arranged around the circuit control board.

[0007] Optionally, the shell body includes a base and a cover plate, the base is provided with a slot structure with one end open, and the circuit control board is installed in the slot structure; the cover plate is used to open or close the opening of the slot structure; the cover plate and the slot structure together form the accommodating cavity.

[0008] Optionally, the wireless charging coil assembly is mounted on the end surface of the cover plate facing the accommodating cavity through the connecting member;

[0009] Alternatively, the wireless charging coil assembly is mounted on the base via the connector.

[0010] Optionally, the connecting member includes a column; the column is erected in the accommodating cavity along the depth direction of the accommodating cavity, and one end of the column is connected to the inner wall of the accommodating cavity; the wireless charging coil assembly includes a coil body and a magnetic isolation plate, and the coil body is installed on one end face of the magnetic isolation plate; the other end face opposite to the magnetic isolation plate is fixedly connected to the other end of the column.

[0011] Optionally, along the length direction of the column, the end surface of the other end of the column is fixedly connected to the magnetic isolation plate.

[0012] Optionally, the wireless charging ground pile further includes an adhesive layer, wherein the adhesive layer is located between the magnetic isolation sheet and the column to connect the magnetic isolation sheet and the column.

[0013] Optionally, the adhesive layer, the pillars and the shell body are all made of heat-conducting materials.

[0014] Optionally, the wireless charging ground pile further includes a reinforcement plate, and at least one of the columns is connected to the inner wall of the accommodating cavity via the reinforcement plate.

[0015] In a second aspect, the present invention provides a charging system, comprising a charging cabinet and the wireless charging ground pile as described above, wherein the charging cabinet is electrically connected to a circuit control board of the wireless charging ground pile.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the structure of the wireless charging ground pile, a housing is provided inside the shell body, which can be used as an installation cavity for other devices; for example, the circuit control board is fixed in the housing cavity; the wireless charging coil assembly is installed in the housing cavity through a connector; at the same time, along the depth direction of the housing cavity, the wireless charging coil assembly covers the circuit control board and is spaced apart from the circuit control board; in this way, when installing the wireless charging coil assembly, the wireless charging coil assembly can be supported directly above the circuit control board under the action of the connector. Since the thickness of the wireless charging coil assembly and the circuit control board are relatively small relative to the planar dimensions of the two, such as the length, without significantly increasing the dimensions of the wireless charging ground pile in the depth direction of the housing cavity, the space occupied in other directions, such as the horizontal direction, can be reduced, and the mutual interference between the wireless charging coil assembly and the circuit control board can be reduced, and the space between the two can be used to help dissipate heat. In summary, the wireless charging ground pile of the present invention can improve the balance between the volume and heat dissipation performance of the wireless charging ground pile by relatively reasonably arranging the components in the wireless charging ground pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded diagram of a wireless charging ground pile according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the locations of the wireless charging coil assembly and the circuit control board according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the shell body according to an embodiment of the present utility model;

[0021] Figure 4 for Figure 3 Cross-sectional view of AA;

[0022] Figure 5 This is a schematic diagram of the assembly of the wireless charging coil assembly and the cover plate according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic structural diagram of a base according to an embodiment of the present utility model;

[0024] Figure 7 This is a partial cross-sectional view of the junction between the wireless charging coil assembly and the column according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Shell body; 11. Cover plate; 12. Base; 13. Accommodating cavity; 121. Slot structure; 2. Wireless charging coil assembly; 21. Coil body; 22. Magnetic isolation sheet; 3. Circuit control board; 4. Connector; 41. Column; 5. Adhesive layer; 6. Reinforcement plate. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0028] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the right side and the reverse direction of the X-axis representing the left side. The Y-axis in the accompanying drawings represents the front-to-back position, with the positive direction of the Y-axis representing the front side and the reverse direction of the Y-axis representing the rear side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0029] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in this utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0030] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0031] In the prior art, when the construction of the wireless charging ground pile is completed, its upper surface is exposed to the ground surface, and the other parts are located underground. The heat is mainly dissipated through the underground part of the wireless charging ground pile, especially the circumferential side wall of the shell body 1 of the wireless charging ground pile; inside the shell body 1, the wireless charging coil assembly 2 is usually placed horizontally and arranged horizontally with the circuit control board 3. In this way, the wireless charging ground pile occupies a relatively large space in the horizontal direction, which leads to a corresponding increase in volume and an increase in the heat dissipation path in the horizontal direction, resulting in poor heat dissipation effect.

[0032] In order to solve the above problems, the present invention provides a wireless charging ground pile, including a shell body 1, a wireless charging coil assembly 2, a circuit control board 3 and a connector 4; the shell body 1 is provided with a accommodating cavity 13; the circuit control board 3 is fixed in the accommodating cavity 13; the wireless charging coil assembly 2 is installed in the accommodating cavity 13 through the connector 4, and along the depth direction of the accommodating cavity 13, the wireless charging coil assembly 2 covers the circuit control board 3 and is spaced apart from the circuit control board 3.

[0033] Specifically, the shape of the shell body 1 can be cylindrical, square or other irregular shapes, which are not limited here and can be determined according to actual needs. Figures 1 to 4 As shown, the shell body 1 is generally cylindrical and has an accommodating cavity 13 inside. The depth of the accommodating cavity 13 is generally between 10 cm and 18 cm. The circuit control board 3 is fixed in the accommodating cavity 13, and the connection method between the two includes but is not limited to bonding or screw connection. The number of connectors 4 can be one, two or three, etc., which is not limited here and depends on actual needs. The wireless charging coil assembly 2 is installed in the accommodating cavity 13 through eight connectors 4, and along the depth direction of the accommodating cavity 13 (that is, the direction of the Z axis), the wireless charging coil assembly 2 covers the circuit control board 3 and is spaced apart from the circuit control board 3, with a spacing between the two ranging from 5 cm to 8 cm.

[0034] In this embodiment, when installing the wireless charging coil assembly 2, the wireless charging coil assembly 2 can be supported directly above the circuit control board 3 under the action of the connector 4. Since the thickness of the wireless charging coil assembly 2 and the circuit control board 3 is relatively small relative to their planar dimensions, such as length, without significantly increasing the depth dimension of the wireless charging ground pile in the accommodating cavity 13, the space occupied in other directions, such as the horizontal direction, can be reduced. In addition, the mutual interference between the wireless charging coil assembly 2 and the circuit control board 3 can be reduced, and the space between the two can be used to assist in heat dissipation. In summary, the wireless charging ground pile of the present invention can improve the balance between the volume and heat dissipation performance of the wireless charging ground pile by relatively reasonably arranging the components within the wireless charging ground pile.

[0035] Optionally, there are multiple connecting members 4 , and the multiple connecting members 4 are arranged around the circuit control board 3 .

[0036] Specifically, if Figure 1 As shown, the circuit control board 3 is in the shape of a rectangle, and two connecting members 4 are respectively provided near each side thereof, that is, eight connecting members 4 are provided around the circuit control board 3 .

[0037] In this optional embodiment, when installing the wireless charging coil assembly 2, since multiple connecting parts 4 are arranged around the circuit control board 3, after the wireless charging coil assembly 2 is connected to the multiple connecting parts 4, multi-point fixation of the wireless charging coil assembly 2 can be achieved, thereby improving the connection stability of the wireless charging coil assembly 2.

[0038] In other embodiments, there may be one, three or four connectors 4 near each side of the circuit control board 3, and the number of connectors 4 near each side of the circuit control board 3 may be equal or unequal, which is not limited here and depends on actual needs.

[0039] Optionally, the shell body 1 includes a base 12 and a cover plate 11, the base 12 is provided with a groove structure 121 with an open end, and the circuit control board 3 is installed in the groove structure 121; the cover plate 11 is used to open or close the opening of the groove structure 121; the cover plate 11 and the groove structure 121 together form the accommodating cavity 13.

[0040] Specifically, the shell body 1 includes two parts, the upper and lower parts. Figure 1 、 6 As shown, the shell body 1 includes a base 12 and a cover plate 11, wherein the cover plate 11 is disc-shaped and is used to cooperate with the wireless receiving module of the electric bicycle; the base 12 is cylindrical as a whole and is provided with a groove structure 121 with an upper end opening; the circuit control board 3 is horizontally installed in the groove structure 121, and the connection method between the two includes but is not limited to bonding or screw connection; the cover plate 11 is arranged at the opening of the groove structure 121 to open or close the opening of the groove structure 121. When the cover plate 11 closes the opening of the groove structure 121, the cover plate 11 and the groove structure 121 are combined to form a accommodating cavity 13.

[0041] In this optional embodiment, when assembling the wireless charging ground pile, since the shell body 1 is divided into two parts, it is convenient to install the circuit control board 3 and the wireless charging coil assembly 2 in the accommodating cavity 13 of the shell body 1.

[0042] Furthermore, the cover plate 11 and the base 12 are sealed and connected. For example, a waterproof glue or a sealing ring is provided at the connection between the cover plate 11 and the base 12. In this way, the probability of water entering the connection between the cover plate 11 and the base 12 can be reduced.

[0043] In one embodiment, the wireless charging coil assembly 2 is mounted on the end surface of the cover plate 11 facing the accommodating cavity 13 through the connector 4;

[0044] Specifically, the connecting member 4 is a viscose, such as Figure 5 As shown, the wireless charging coil assembly 2 is glued to the end surface of the cover 11 facing the receiving cavity 13. This reduces the distance between the wireless charging coil assembly 2 and the cover 11, thereby shortening the distance between the wireless charging coil assembly 2 and the wireless receiving module of the electric bicycle, thereby reducing the power transmission distance.

[0045] In another embodiment, the wireless charging coil assembly 2 is mounted on the base 12 via the connector 4 .

[0046] Optionally, the connecting member 4 includes a column 41; the column 41 is erected in the accommodating cavity 13 along the depth direction of the accommodating cavity 13, and one end of the column 41 is connected to the inner wall of the accommodating cavity 13; the wireless charging coil assembly 2 includes a coil body 21 and a magnetic isolation plate 22, and the coil body 21 is installed on one end face of the magnetic isolation plate 22; the other end face opposite to the magnetic isolation plate 22 is fixedly connected to the other end of the column 41.

[0047] Specifically, the column 41 can be straight or curved, which is not limited here and depends on actual needs. Figure 1 、 6 As shown, the column 41 is linear and stands upright in the accommodating cavity 13 along the depth direction of the accommodating cavity 13 (that is, the direction of the Z axis). The lower end of the column 41 is connected to the bottom wall of the accommodating cavity 13, and the connection method between the two includes but is not limited to welding or screw connection; the wireless charging coil assembly 2 includes a coil body 21 and a magnetic isolation plate 22, and the coil body 21 is installed on the upper end surface of the magnetic isolation plate 22; the lower end surface of the magnetic isolation plate 22 is fixedly connected to the other end of the column 41.

[0048] In this optional embodiment, the magnetic isolation sheet 22 has the following functions: First, the magnetic isolation sheet 22 has a high magnetic permeability and can concentrate the magnetic field generated by the coil body 21, so that the magnetic lines of force are tightly surrounded by the magnetic isolation sheet 22 as the center, thereby increasing the electromagnetic induction intensity and improving the electromagnetic conversion efficiency; Second, the magnetic isolation sheet 22 can effectively block the influence of the magnetic field on the surrounding metal objects, reduce the attenuation interference of the metal objects on the magnetic field, prevent energy waste, and improve the charging efficiency; Third, the magnetic isolation sheet 22 plays the role of supporting the coil body 21.

[0049] Optionally, along the length direction of the column 41 , the end surface of the other end of the column 41 is fixedly connected to the magnetic isolation plate 22 .

[0050] Specifically, if Figure 2 As shown, there are eight columns 41, and the upper end surfaces of the eight columns 41 are located in the same horizontal plane and are fixedly connected to the magnetic isolation plate 22. In this way, the columns 41 support the magnetic isolation plate 22 in the Z-axis direction to achieve stable support of the wireless charging coil assembly 2.

[0051] In other embodiments, the circumferential side wall of the other end of the column 41 is fixedly connected to the magnetic isolation plate 22 .

[0052] Alternatively, as Figure 7 As shown, the wireless charging ground pile further includes an adhesive layer 5 , which is located between the magnetic isolation sheet 22 and the column 41 to connect the magnetic isolation sheet 22 and the column 41 .

[0053] In this way, when installing the wireless charging coil assembly 2, first apply glue to the top surface of the column 41 and the corresponding position of the magnetic isolation plate 22, and then place the magnetic isolation plate 22 on the top surface of the column 41 so that the magnetic isolation plate 22 and the glue on the column 41 are bonded to each other. After the glue between the magnetic isolation plate 22 and the column 41 solidifies, an adhesive layer 5 can be formed. In this way, the connection between the magnetic isolation plate 22 and the column 41 can be simplified.

[0054] Optionally, the adhesive layer 5 , the pillars 41 and the shell body 1 are all made of heat-conducting materials.

[0055] Specifically, the adhesive layer 5 is a thermally conductive adhesive, which can be an epoxy thermally conductive adhesive, a silicone thermally conductive adhesive, a polyurethane thermally conductive adhesive, or an acrylic thermally conductive adhesive, which mainly plays the role of heat conduction and bonding; the column 41 and the shell body 1 are aluminum alloy or iron parts. Since the thermal conductivity coefficient of aluminum is 237W / (m·K), both are preferably aluminum alloy; in this way, when the wireless charging coil assembly 2 is working, part of the heat generated by the wireless charging coil assembly 2 can be transferred to the shell body 1 through the adhesive layer 5 and the column 41, and then dissipated to the outside by the shell body 1.

[0056] Optionally, the wireless charging ground pile further includes a reinforcing plate 6 , and at least one of the columns 41 is connected to the inner wall of the accommodating cavity 13 via the reinforcing plate 6 .

[0057] Specifically, the shape of the reinforcing plate 6 can be square, trapezoidal or triangular. Figure 2 、 6 As shown, the reinforcing plate 6 is square in shape, and the two side ends of the reinforcing plate 6 are respectively connected to the side walls of the accommodating cavity 13 and the column 41, and the bottom end of the reinforcing plate 6 is connected to the bottom wall of the accommodating cavity 13; wherein, the reinforcing plate 6, the column 41 and the shell body 1 can be made as a whole, or can be connected by screws.

[0058] In this optional embodiment, when the column 41 supports the wireless charging coil assembly 2 , the reinforcing plate 6 can increase the strength of the column 41 to reduce the probability of deformation of the column 41 .

[0059] An embodiment of the present invention provides a charging system, comprising a charging cabinet and the wireless charging ground pile as described above, wherein the charging cabinet is electrically connected to the circuit control board 3 of the wireless charging ground pile.

[0060] Specifically, the charging cabinet is erected on the ground, and its internal circuit system has multiple power output ports. Each power output port can be electrically connected to the circuit control board 3 of the wireless charging ground pile through an electrical connection line, thereby realizing the distribution of power through the charging cabinet and wireless transmission of power through the corresponding wireless charging ground pile.

[0061] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A wireless charging ground pile, characterized in that: The invention comprises a shell body (1), a wireless charging coil assembly (2), a circuit control board (3) and a connecting piece (4); a receiving cavity (13) is provided inside the shell body (1); the circuit control board (3) is fixed in the receiving cavity (13); the wireless charging coil assembly (2) is installed in the receiving cavity (13) through the connecting piece (4), and along the depth direction of the receiving cavity (13), the wireless charging coil assembly (2) covers the circuit control board (3) and is spaced apart from the circuit control board (3).

2. The wireless charging ground pile according to claim 1, characterized in that: There are a plurality of connecting members (4), and the plurality of connecting members (4) are arranged around the circuit control board (3).

3. The wireless charging ground pile according to claim 1, characterized in that: The shell body (1) comprises a base (12) and a cover plate (11); the base (12) is provided with a slot structure (121) with one end open, and the circuit control board (3) is installed in the slot structure (121); the cover plate (11) is used to open or close the opening of the slot structure (121); the cover plate (11) and the slot structure (121) together form the accommodating cavity (13).

4. The wireless charging ground pile according to claim 3, characterized in that: The wireless charging coil assembly (2) is mounted on the end surface of the cover plate (11) facing the accommodating cavity (13) via the connecting member (4); Alternatively, the wireless charging coil assembly (2) is mounted on the base (12) via the connector (4).

5. The wireless charging ground pile according to claim 3, characterized in that: The connecting member (4) includes a column (41); the column (41) is erected in the accommodating cavity (13) along the depth direction of the accommodating cavity (13), and one end of the column (41) is connected to the inner wall of the accommodating cavity (13); the wireless charging coil assembly (2) includes a coil body (21) and a magnetic isolation plate (22), and the coil body (21) is installed on one end surface of the magnetic isolation plate (22); the other end surface opposite to the magnetic isolation plate (22) is fixedly connected to the other end of the column (41).

6. The wireless charging ground pile according to claim 5, characterized in that: Along the length direction of the column (41), the end surface of the other end of the column (41) is fixedly connected to the magnetic isolation plate (22).

7. The wireless charging ground pile according to claim 5 or 6, characterized in that: It also includes an adhesive layer (5), which is located between the magnetic isolation plate (22) and the upright column (41) to connect the magnetic isolation plate (22) and the upright column (41).

8. The wireless charging ground pile according to claim 7, characterized in that: The materials of the adhesive layer (5), the pillar (41) and the shell body (1) all include heat-conducting materials.

9. The wireless charging ground pile according to claim 5, characterized in that: It also includes a reinforcing plate (6), and at least one of the columns (41) is connected to the inner wall of the accommodating cavity (13) through the reinforcing plate (6).

10. A charging system, characterized in that: It comprises a charging cabinet and a wireless charging pile according to any one of claims 1 to 9, wherein the charging cabinet is electrically connected to a circuit control board (3) of the wireless charging pile.

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