On-vehicle wireless power supply device

Abstract

To provide an on-vehicle wireless power supply device that can supply a power to a power supplied material with a plurality of specifications, and has a compact type.SOLUTION: An on-vehicle wireless power supply device 100 comprises: a housing 1 having a first opposite surface 21m and a second opposite surface 22m that are opposite each other while nipping an arrangement space Sp where a supplied power material can be arranged; and a power supply part 5 that includes a first power transmission part 6 and a second power transmission part 7, and in which any one of the first power transmission part 6 and the second power transmission part 7 only supply power. The first power transmission part 6 contains a power transmission side magnet 63 that fixes the supplied power material by a magnetic suction force, is arranged so as to be opposite to the arrangement space Sp while nipping the first opposite surface 21m, and can supply a power to the supplied power material arranged so as to be closed to the first opposite surface 21m of the arrangement space Sp by the magnetic suction force. The second power transmission part 7 is arranged so as to be opposite to the arrangement space Sp while nipping the second opposite surface 22m, and can supply a power to the supplied power material that is arranged so as to be closed to the second opposite surface 22m of the arrangement space Sp.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an in-vehicle wireless power supply device. [Background technology]

[0002] Various products related to wireless power supply devices that can wirelessly supply power to electronic devices such as phones and wearable devices have been developed (see, for example, Patent Document 1). Patent Document 1 discloses a wireless charger that can charge two or more electronic devices at a time. The wireless charger includes a first leaf for charging a phone (first electronic device) and a second leaf for charging a wearable device (second electronic device), with the first leaf and second leaf arranged side by side with a main hinge between them. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-052762 Summary of the Invention [Problem to be solved by the invention]

[0004] In a device capable of supplying power to multiple electronic devices with different specifications (hereinafter referred to as "powered objects"), such as the wireless charger disclosed in Patent Document 1, a configuration that provides a space for supplying power to each of the different specifications makes it impossible to effectively utilize limited space, such as the interior of a vehicle.

[0005] Therefore, there is a demand for a compact in-vehicle wireless power supply device that can supply power to power-receiving devices of a variety of specifications. [Means for solving the problem]

[0006] One embodiment of an in-vehicle wireless power supply device according to the present disclosure is an in-vehicle wireless power supply device that is mounted on a vehicle and can supply power wirelessly to a power-receiving object, the wireless power supply device comprising: a housing that forms an arrangement space in which the power-receiving object can be placed, and has a first opposing surface and a second opposing surface that face each other across the arrangement space; and a power supply unit that has a first power transmission unit and a second power transmission unit, and supplies power to only one of the first power transmission unit and the second power transmission unit, wherein the first power transmission unit includes a power transmission side magnet that fixes the power-receiving object by magnetic attraction, is arranged to face the arrangement space across the first opposing surface, and is capable of supplying power by the magnetic attraction to the power-receiving object that is arranged close to the first opposing surface of the arrangement space; and the second power transmission unit is arranged to face the arrangement space across the second opposing surface, and is capable of supplying power to the power-receiving object that is arranged close to the second opposing surface of the arrangement space.

[0007] In this configuration, the first power transmission unit and the second power transmission unit face each other across an arrangement space, and the first power transmission unit is capable of supplying power to a power-receiving object arranged close to a first opposing surface of the arrangement space by magnetic attraction, and the second power transmission unit is capable of supplying power to a power-receiving object arranged close to a second opposing surface of the arrangement space. That is, the in-vehicle wireless power feeder is capable of supplying power to two types of power-receiving objects (with different specifications) arranged in one arrangement space. That is, in the in-vehicle wireless power feeder, the space for arranging the two types of power-receiving objects is shared. Therefore, it is possible to make the in-vehicle wireless power feeder capable of supplying power to power-receiving objects with a plurality of specifications more compact.

[0008] As another characteristic configuration, it is preferable that the first opposing surface and the second opposing surface oppose each other in the longitudinal direction of the vehicle so that the first opposing surface is positioned rearward of the vehicle relative to the second opposing surface, and that each of the first opposing surface and the second opposing surface is mounted on the vehicle so as to be inclined toward the front of the vehicle relative to the vertical direction of the vehicle.

[0009] With this configuration, for example, even if the vehicle suddenly accelerates, the power-supplied object can be prevented from jumping out of the arrangement space. Furthermore, because the first opposing surface is located at the rear of the vehicle, the first opposing surface blocks the view of the power-supplied object, preventing inattentive driving. Furthermore, because the second opposing surface is inclined toward the front of the vehicle in the vertical direction, the power-supplied object can be brought closer to the second power transmission unit located at the front of the vehicle, improving power supply efficiency. Furthermore, the magnetic attraction of the first opposing surface can bring the power-supplied object closer to the first power transmission unit, improving power supply efficiency.

[0010] As another characteristic configuration, it is preferable that the first opposing surface and the second opposing surface oppose each other in the longitudinal direction of the vehicle so that the first opposing surface is positioned in front of the vehicle relative to the second opposing surface, and that each of the first opposing surface and the second opposing surface is mounted on the vehicle so as to be inclined rearward with respect to the vertical direction of the vehicle.

[0011] In this configuration, for example, even if the vehicle suddenly stops or suddenly decelerates, the power-supply object can be prevented from jumping out of the arrangement space.

[0012] As another characteristic configuration, it is preferable that the housing is arranged vertically below the arrangement space and further has a bottom surface that partitions the arrangement space, the bottom surface is inclined so that the front side in the front-to-rear direction is lower in the vertical direction than the rear side, the first opposing surface and the second opposing surface each stand upright from the bottom surface, the first opposing surface has a tip on the opposite side to the side connected to the bottom surface, and the second opposing surface has a base end on the side connected to the bottom surface, and the tip is located further forward than the base end.

[0013] In this configuration, even if the powered object placed close to the second opposing surface tilts toward the first opposing surface due to vibration or the like, the powered object will not remain supported by the tip of the first opposing surface, and gravity will act on the powered object, allowing it to return to its original state in which it was placed close to the second opposing surface.

[0014] As another characteristic configuration, it is preferable that the housing further has two side surfaces facing each other with the arrangement space therebetween in the left-right direction of the vehicle.

[0015] In this configuration, even if gravitational acceleration (centrifugal force) in the left-right direction of the vehicle acts on the power-supplied object, it is possible to prevent the power-supplied object from jumping out of the arrangement space.

[0016] As another characteristic configuration, it is preferable that the first opposing surface is spaced apart from each of the two side surfaces.

[0017] In this configuration, even if an object smaller than the power-receiving object enters the arrangement space, the object can be easily removed through the gap.

[0018] As another characteristic configuration, it is preferable that the center of the first opposing surface in the left-right direction and the center of the second opposing surface in the left-right direction are coincident, and that the distances between the first opposing surface and the two side surfaces are equal to each other.

[0019] In this configuration, the user can use the first opposing surface as a mark for the center position of the power-supply object in the left-right direction, for example, which allows the power-supply object to be positioned so as to increase power supply efficiency.

[0020] As another characteristic configuration, it is preferable that each of the first power transmission unit and the second power transmission unit includes a power transmission coil, the power supply unit further includes a power supply circuit capable of supplying power to the power transmission coil, and the power supply circuit is arranged on the side of the second power transmission unit.

[0021] In this configuration, the power supply circuit is disposed on the side of the second power transmission unit, so that the side of the first opposing surface can be made compact.

[0022] As another characteristic configuration, it is preferable that the first power transmission unit includes one of the power transmission coils, and the second power transmission unit includes a plurality of the power transmission coils.

[0023] In this configuration, the second power transmitting unit can have a wider power supply surface (surface to which power can be supplied) than the first power transmitting unit which includes one power transmitting coil. This makes it possible to supply power from the second power transmitting unit even if the position of the receiving coil built into the power receiving object varies due to differences in the size of the power receiving object, etc. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a diagram illustrating a state in which an in-vehicle wireless power supply device according to an embodiment is incorporated into a dashboard of a vehicle. [Figure 2] FIG. 2 is a perspective view of the in-vehicle wireless power feeder shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. [Figure 4] 3 is a view of the in-vehicle wireless power feeder shown in FIG. 2 as viewed obliquely from above. [Figure 5] FIG. 3 is an exploded perspective view of the in-vehicle wireless power feeder shown in FIG. 2. [Figure 6] 6 is an exploded perspective view of the in-vehicle wireless power feeder shown in FIG. 5, viewed from the opposite side. [Figure 7] 3 is a diagram illustrating a configuration of a first power transmission unit illustrated in FIG. 2. FIG. [Figure 8] FIG. 2 is a cross-sectional view showing an in-vehicle wireless power supply apparatus in which a first device is disposed. [Figure 9] FIG. 10 is a cross-sectional view showing an in-vehicle wireless power supply apparatus in which a second device is disposed. [Figure 10] FIG. 9 is a front view of the in-vehicle wireless power feeder shown in FIG. [Figure 11] FIG. 10 is a front view of the in-vehicle wireless power feeder shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an in-vehicle wireless power feeder according to an embodiment of the present invention will be described with reference to the drawings.

[0026] [Overview of in-vehicle wireless power supply device] First, an overview of an in-vehicle wireless power feeder 100 will be described with reference to FIG. 1. As shown in FIG. 1, the in-vehicle wireless power feeder 100 is mounted on a vehicle C. The in-vehicle wireless power feeder 100 is disposed (embedded) in, for example, a dashboard DB (instrumental panel) of the vehicle C. In the following, the direction along the left-right direction of the vehicle C is referred to as the "X direction," with the right side of the left-right direction referred to as the "X1 side" and the left side of the left-right direction referred to as the "X2 side." Furthermore, the direction along the front-rear direction of the vehicle C is referred to as the "Y direction," with the front side of the front-rear direction referred to as the "Y1 side" and the rear side of the front-rear direction referred to as the "Y2 side" (see FIG. 2). Furthermore, the up-down direction of the vehicle C is referred to as the "Z direction," with the upper side of the up-down direction referred to as the "Z1 side" and the lower side of the up-down direction referred to as the "Z2 side."

[0027] The in-vehicle wireless power feeder 100 is capable of wirelessly feeding power to an electronic device D (an example of a power-receiving object). In this embodiment, the in-vehicle wireless power feeder 100 feeds power to the electronic device D by electromagnetic induction as a wireless power feeding method.

[0028] The electronic devices D are mobile phones, smartphones, etc., and are compatible with the above-mentioned power supply methods. The electronic devices D include two types of electronic devices D with different specifications: a first device D1 that is compatible with magnet alignment (described later) and a second device D2 that is not compatible with magnet alignment (see FIGS. 8 and 9). That is, in this embodiment, the first device D1 includes a power receiving magnet DM.

[0029] The electronic device D further includes a device housing DH, a display DD, and a receiving coil DC. The device housing DH is a rectangular parallelepiped (including an approximately rectangular parallelepiped), and the display DD is disposed on one first main surface of the device housing DH. The receiving coil DC is disposed inside the device housing DH on a second main surface opposite the first main surface (see also FIG. 8). The receiving-side magnet DM included in the first device D1 is disposed inside the device housing DH on the side opposite the side on which the display DD is disposed, i.e., in the vicinity of the receiving coil DC.

[0030] [Configuration of in-vehicle wireless power supply device] Next, the configuration of the in-vehicle wireless power feeder 100 will be described with reference to Fig. 2. Fig. 2 is a perspective view showing the in-vehicle wireless power feeder 100.

[0031] As shown in FIG. 2, the in-vehicle wireless power supply apparatus 100 has an arrangement space Sp in which the electronic device D described with reference to FIG. 1 can be arranged, and supplies power to the electronic device D arranged in the arrangement space Sp.

[0032] The in-vehicle wireless power supply device 100 includes a housing 1 and a power supply unit 5 arranged in the internal space of the housing 1.

[0033] [Case] Fig. 3 is a cross-sectional view taken along line III-III shown in Fig. 2. The housing 1 has a first case 2 and a second case 4 (see also Figs. 5 and 6). In this embodiment, the housing 1 may be formed integrally with the dashboard DB described with reference to Fig. 1, or may be formed separately.

[0034] [Case 1] The first case 2 is an insulator containing resin as a material. The arrangement space Sp is formed in the first case 2. The first case 2 includes a bottom wall portion 20, a first wall portion 21, and a second wall portion 22.

[0035] The housing 1 is placed in the vehicle C (see FIG. 1) so that the bottom wall 20 faces the Z2 side. That is, the bottom wall 20 is placed on the Z2 side of the installation space Sp. The bottom wall 20 includes a bottom surface 20m on which the electronic device D is placed. The bottom surface 20m defines the installation space Sp.

[0036] The bottom surface 20m is inclined so that the Y1 side is closer to the Z2 side than the Y2 side. Hereinafter, the inclination angle of the bottom surface 20m with respect to the Y direction will be referred to as the "inclination angle θ." The inclination angle θ is, for example, 20 degrees.

[0037] In the following, the direction perpendicular to the bottom surface 20m is referred to as the "P direction," the same side as the Y1 side in the P direction is referred to as the "P1 side," and the opposite side is referred to as the "P2 side." Furthermore, the direction perpendicular to the P direction and the X direction is referred to as the "Q direction," and the same side as the Y1 side in the Q direction is referred to as the "Q1 side," and the opposite side is referred to as the "Q2 side." In other words, the bottom surface 20m is a plane that follows the XQ plane.

[0038] The first wall portion 21 is hollow and has a tongue shape when viewed along the Y direction, as shown in Fig. 2. As shown in Fig. 3, the first wall portion 21 is disposed on the Y2 side (strictly speaking, the Q2 side) with respect to the arrangement space Sp and the second wall portion 22.

[0039] The first wall portion 21 stands from the bottom wall portion 20 (bottom surface 20m) toward the P1 side, with the bottom wall portion 20 (bottom surface 20m) serving as a base end (hereinafter referred to as "first base end 21k"). The first wall portion 21 includes a first opposing surface 21m standing from the bottom surface 20m.

[0040] The first opposing surface 21m is a plane along the XP plane and defines the arrangement space Sp. The first opposing surface 21m faces the second wall portion 22 across the arrangement space Sp.

[0041] The second wall portion 22 stands from the bottom wall portion 20 (bottom surface 20m) toward the P1 side, with the bottom wall portion 20 serving as a base end (hereinafter referred to as "second base end 22k"). That is, the first wall portion 21 and the second wall portion 22 are connected via the bottom wall portion 20.

[0042] As shown in Fig. 4, the second wall 22 is formed so that a part of the Q2 side is recessed toward the Q1 side in a substantially U-shape, and the recessed part forms the arrangement space Sp. Fig. 4 is a view of the in-vehicle wireless power feeder 100 as seen from the P1 side along the P direction.

[0043] The second wall portion 22 includes a front wall 23 disposed on the Q1 side and two side walls 24. The front wall 23 includes a mounting portion 23z on the Q1 side to which the second case 4 is attached (see also Figures 3 and 6). The mounting portion 23z is composed of a peripheral wall that stands on the Q1 side. The peripheral wall has a base end at the flat surface on the Q1 side of the second wall portion 22. The peripheral wall is formed to fit around the second case 4.

[0044] The front wall 23 also includes a second opposing surface 22m on the opposite side of the mounting portion 23z in the Q direction (Y direction). The second opposing surface 22m extends from the bottom surface 20m toward the P1 side, with the bottom surface 20m serving as a base end. The second opposing surface 22m is a plane that extends along the XP plane, and a portion of it defines the arrangement space Sp. The area of ​​the second opposing surface 22m is larger than the area of ​​the first opposing surface 21m.

[0045] The first opposing surface 21m and the second opposing surface 22m are parallel (including substantially parallel, the same applies below) and face each other in the Y direction across the arrangement space Sp. The first opposing surface 21m is disposed on the Q2 side (Y2 side) of the second opposing surface 22m.

[0046] 3, the first distance d1 between the first opposing surface 21m and the second opposing surface 22m is set to a dimension that allows placement of only one electronic device D, which is either a first device D1 or a second device D2. The first distance d1 is, for example, 17 mm.

[0047] Each of the first opposing surface 21m and the second opposing surface 22m is inclined with respect to the Z direction (inclined toward the Y1 side). That is, the in-vehicle wireless power feeder 100 is mounted on the vehicle C so that the first opposing surface 21m and the second opposing surface 22m are inclined with respect to the Z direction.

[0048] Specifically, each of the first opposing surface 21m and the second opposing surface 22m is inclined so as to be positioned closer to the Y1 side as it approaches the Z1 side. More specifically, the first tip 21s of the first opposing surface 21m is configured to be positioned closer to the Y1 side than the second base end 22k of the second opposing surface 22m. A second distance d2 between the first tip 21s and the second base end 22k in the Y direction is, for example, 22 mm. The first tip 21s is the end opposite to the side connected to the bottom surface 20m of the first wall portion 21 (first opposing surface 21m), and the second base end 22k is the end connected to the bottom surface 20m of the second wall portion 22 (second opposing surface 22m).

[0049] 4, each of the two side walls 24 extends toward the Q2 side (Y2 side) from both ends of the front wall 23 in the X direction as base ends. The side walls 24 include side surfaces 24m that face each other in the X direction, sandwiching the arrangement space Sp therebetween. The side surfaces 24m of the two side walls 24 are arranged so as to be spaced apart toward the Q2 side, and parts of them define the arrangement space Sp.

[0050] Each of the two side walls 24 (side surfaces 24m) is spaced apart from the first wall portion 21 (first opposing surface 21m) (see also FIG. 2). Hereinafter, of the two side surfaces 24m, the side surface 24m on the X1 side will be referred to as the "first side surface 241m," and the other side surface 24m will be referred to as the "second side surface 242m." In this embodiment, a third distance d3 in the X direction between the first side surface 241m and the first wall portion 21 at the closest to Q2 is equal to a fourth distance d4 in the X direction between the second side surface 242m and the first wall portion 21 at the closest to Q2. The third distance d3 and the fourth distance d4 are, for example, 18 mm.

[0051] [Case 2] 5 and 6, the second case 4 has a substantially rectangular shape when viewed along the Q direction, and is a box shape that is open on one side (Q2 side) in the Q direction. Note that FIGS. 5 and 6 are exploded perspective views of the in-vehicle wireless power feeder 100.

[0052] The second case 4 is made of a material such as resin or metal. The second case 4 is fixed to the first case 2 by inserting fastening members such as screws into holes formed in the second case 4 and threaded holes formed in the first case 2. Fixing the second case 4 to the first case 2 forms a second housing space S2 in which a portion of the power supply unit 5 can be placed.

[0053] [Power supply unit] The power supply unit 5 is configured to be able to supply (transmit) power to the electronic device D. As shown in FIG. 5, the power supply unit 5 has a first power transmission unit 6, a second power transmission unit 7, a substrate unit 8, and a shield unit 9.

[0054] 3, the first power transmission unit 6 is disposed in a first housing space S1 formed inside the first wall portion 21. Specifically, the first power transmission unit 6 is disposed so as to face the arrangement space Sp across the first opposing surface 21m.

[0055] The second power transmission unit 7, the substrate unit 8, and the shield unit 9 are arranged in the second housing space S2. The second power transmission unit 7, the substrate unit 8, and the shield unit 9 are arranged to face the arrangement space Sp with the second opposing surface 22m in between.

[0056] [First power transmission section] 7 is a diagram showing the configuration of the first power transmission unit 6. More specifically, this is a diagram showing the first power transmission unit 6 in a position arranged in the first housing space S1, viewed from the Q1 side along the Q direction. The first power transmission unit 6 is configured to be able to supply power to an electronic device D (in this embodiment, the first device D1) arranged by magnetic attraction on the side of the first opposing surface 21m in the arrangement space Sp with its second main surface (see FIG. 8) in close proximity (in this embodiment, in contact with the first opposing surface 21m).

[0057] As shown in FIG. 7, the first power transmission unit 6 includes a pedestal 61, a first power transmission coil 62, and a magnet (hereinafter referred to as a "power transmission side magnet 63").

[0058] The cradle 61 includes a base 611 , two fixing portions 612 , and a support portion 613 .

[0059] The base 611 is flat and has a plane perpendicular to the P direction when placed in the first housing space S1 (see FIG. 3).

[0060] Each of the two fixing portions 612 is cylindrical and stands upright with the base portion 611 as its base end. The fixing portion 612 is fitted onto a boss (not shown) formed on the first case 2. A fastening member is inserted through the fixing portion 612 and the boss formed on the first case 2 and screwed together, thereby fixing the receiving base 61 to the first wall portion 21.

[0061] The support portion 613 extends from the base portion 611 to the opposite side to the fixed portion 612 (standing in the P1 direction relative to the base portion 611). The support portion 613 has a shape corresponding to the first wall portion 21 (any shape that can be accommodated in the first accommodation space S1, for example, a tongue shape when viewed along the Q direction). The support portion 613 includes a support surface 613m.

[0062] When placed in the first housing space S1, the support surface 613m is perpendicular to the Q direction. The first power transmitting coil 62 and the power transmitting side magnet 63 are placed on the support surface 613m. The first power transmitting coil 62 and the power transmitting side magnet 63 are fixed to the support surface 613m by adhesive or other methods. As shown in FIG. 3 , the first power transmitting coil 62 and the power transmitting side magnet 63 are placed at positions where the first device D1 can receive power.

[0063] The first power transmitting coil 62 is composed of a single coil (power transmitting coil). The first power transmitting coil 62 is an air-core, circular plate-shaped coil. As shown in Fig. 3, when the first power transmitting coil 62 is placed in the first housing space S1, the central axis CX1 of the coil is perpendicular to the first opposing surface 21m.

[0064] The power transmitting side magnet 63 fixes the first device D1 (positions the first device D1) by magnetic attraction between it and the power receiving side magnet DM (see FIG. 1) of the first device D1. More specifically, the power transmitting side magnet 63 fixes the first device D1 by magnetic attraction so as to maximize the power feeding efficiency of the first power transmitting coil 62 (magnet alignment). In this embodiment, as shown in FIG. 7, the power transmitting side magnet 63 is disposed at the air core of the first power transmitting coil 62.

[0065] The central axis CX1 of the first power transmitting coil 62 is arranged such that the first device D1, which is fixed by magnetic attractive force (magnetic attractive force acting between the power transmitting-side magnet 63 and the power receiving-side magnet DM (see FIG. 1) of the first device D1), is spaced apart from the bottom surface 20m. This makes it possible to prevent, for example, the first device D1 with the largest longitudinal size from being arranged at a position where power supply efficiency is highest among the first devices D1 of different sizes. In other words, even the first device D1 with the largest longitudinal size can be arranged at a position where power supply efficiency is highest. The distance from the bottom surface 20m to the central axis CX1 of the first power transmitting coil 62 in the P direction is, for example, 84 mm.

[0066] [Second power transmission section] As shown in FIG. 3, the second power transmission unit 7 is configured to be able to supply power to an electronic device D (in this embodiment, the second device D2) arranged on the side of the second opposing surface 22m of the arrangement space Sp (in this embodiment, in contact with the second opposing surface 22m).

[0067] The second power transmission unit 7 includes a second power transmission coil 71. As shown in Fig. 5, the second power transmission coil 71 is made up of a plurality of coils (three in this embodiment) (power transmission coils). All three coils are air-core, circular ring-shaped coils.

[0068] 3, when the second power transmission coils 71 are arranged in the second housing space S2, the second power transmission coils 71 are stacked such that the central axes of the coils are aligned in a straight line in the P direction, are spaced apart from each other, and are perpendicular to the second opposing surface 22m. When the second power transmission coils 71 are arranged in the second housing space S2, the middle coil of the three coils is arranged closer to the second opposing surface 22m, and the two coils at both ends are arranged farther from the second opposing surface 22m than the middle coil. When the second power transmission coils 71 are arranged in the second housing space S2, the middle coil is close to or in contact with the surface opposite the second opposing surface 22m in the Q direction.

[0069] [Board] The board unit 8 includes a board 81, a connector 82 (see also FIG. 6), a power supply circuit 83 (see also FIG. 5), and a control circuit 84 (see FIG. 6). The board 81 is, for example, a rigid board. The connector 82, the power supply circuit 83, and the control circuit 84 are mounted on the board 81.

[0070] The connector 82 is electrically connected to the power supply circuit 83. The connector 82 is also connected to an external power supply device (not shown) via a cable. As a result, power (for example, a DC voltage) is supplied to the power supply circuit 83 via the connector 82.

[0071] The power supply circuit 83 is disposed on the side of the second power transmission unit 7 and is electrically connected to the first power transmission coil 62 and the second power transmission coil 71. When the distance between the power receiving coil DC and the first power transmission coil 62 or the second power transmission coil 71 becomes equal to or less than a predetermined value, the power supply circuit 83 generates power (AC) to be supplied to the first power transmission coil 62 or the second power transmission coil 71 based on externally supplied power (DC). As described above, the first power transmission coil 62 and the second power transmission coil 71 are disposed to face each other across the arrangement space Sp. Only one electronic device D can be disposed in the arrangement space Sp, and the power supply circuit 83 can supply power to only one of the first power transmission unit 6 (first power transmission coil 62) and the second power transmission unit 7 (second power transmission coil 71). In other words, a user can supply power to (transmit power from) the electronic device D using only one of the first power transmission unit 6 and the second power transmission unit 7.

[0072] The first power transmitting coil 62 generates a magnetic flux when power is supplied from the power supply circuit 83. When the first power transmitting coil 62 generates a magnetic flux, an induced electromotive force is generated in the power receiving coil DC of the electronic device D (the first device D1 in this embodiment), and a current flows through the power receiving coil DC. This charges a secondary battery (not shown) provided in the electronic device D.

[0073] Similarly, the second power transmitting coil 71 generates a magnetic flux when power is supplied from the power supply circuit 83. In this embodiment, the power supply circuit 83 supplies power to the second power transmitting coil 71 with the highest power supply efficiency among the three coils constituting the second power transmitting coil 71. The power supply circuit 83 determines the second power transmitting coil 71 with the highest power supply efficiency based on information about the received power received by a control circuit 84 mounted on the substrate 81, and supplies power to that second power transmitting coil 71.

[0074] When the second power transmitting coil 71 generates a magnetic flux, an induced electromotive force is generated in the power receiving coil DC of the electronic device D, and a current flows through the power receiving coil DC. This charges a secondary battery (not shown) provided in the electronic device D. Note that "power supply" in this specification refers to generating an induced electromotive force in the power receiving coil DC (see FIG. 1) of the electronic device D. The power supply unit 5 may further include a dielectric magnetic absorber. The inclusion of the magnetic absorber makes it possible to control the magnetic field generated by the current and improve power supply efficiency.

[0075] [Shield part] The shielding portion 9 includes a first shielding portion 91 and a second shielding portion 92 (see also FIGS. 5 and 6). The first shielding portion 91 and the second shielding portion 92 are formed by sheet metal processing, cutting, casting, or the like using a material with high electromagnetic wave shielding performance, such as aluminum or iron.

[0076] The first shield section 91 is disposed on the Q2 side of the substrate 81, and the second shield section 92 is disposed on the Q1 side of the substrate 81. That is, the first shield section 91 and the second shield section 92 are disposed so as to sandwich the substrate 81 in the Q direction. That is, in the second housing space S2, the second power transmitting coil 71, the first shield section 91, the substrate 81, and the second shield section 92 are disposed in this order from the Q2 side to the Q1 side. By sandwiching the substrate 81 between the first shield section 91 and the second shield section 92, the influence of external noise on the circuits mounted on the substrate 81 can be suppressed. In addition, the influence of unwanted radiation on peripheral devices can also be suppressed (EMC countermeasures). Furthermore, the first shield section 91 and the second shield section 92 can dissipate heat via heat dissipation members or the like attached to heat source parts such as the charging circuit and the control circuit 84 mounted on the substrate 81 (heat dissipation countermeasures). In addition, it is possible to protect the substrate 81 and / or the circuit components mounted on the substrate 81 from external forces.

[0077] [How to use the in-vehicle wireless power supply device] Next, the operation of the in-vehicle wireless power feeder 100 during use will be described with reference to Fig. 8 to Fig. 11. Fig. 8 is a cross-sectional view showing the in-vehicle wireless power feeder 100 in which the first device D1 is arranged in the arrangement space Sp, and Fig. 9 is a cross-sectional view showing the in-vehicle wireless power feeder 100 in which the second device D2 is arranged in the arrangement space Sp. Fig. 10 is a view (front view) of the in-vehicle wireless power feeder 100 shown in Fig. 8 as viewed along the Y direction, and Fig. 11 is a view (front view) of the in-vehicle wireless power feeder 100 shown in Fig. 9 as viewed along the Y direction. It is assumed that the in-vehicle wireless power feeder 100 is fixed to the dashboard DB or the like of the vehicle C described with reference to Fig. 1 and is connected in advance to an external power source (not shown) before use.

[0078] 8 and 9, when the electronic device D is placed in the placement space Sp in the first posture or the second posture, the power supply circuit 83 starts supplying power. More specifically, as shown in Fig. 8, when the first device D1 is placed in the placement space Sp in the first posture and the first device D1 approaches or comes into contact with the first opposing surface 21m due to magnetic attraction, the power supply circuit 83 supplies power only to the first power transmission unit 6 (first power transmission coil 62).

[0079] Here, the first attitude refers to an attitude in which the second main surface (the main surface opposite to the first main surface on which the display DD is arranged) of the device housing DH of the electronic device D faces the first opposing surface 21m. Note that "facing" only needs to be facing each other, and includes both cases where they are parallel to each other and cases where they are not parallel to each other.

[0080] In the arrangement space Sp, a magnetic flux (magnetic field) generated by the first power transmission unit 6 acts on the power receiving coil DC of the electronic device D arranged in proximity to or in contact with the first opposing surface 21m. Note that when the first device D1 is arranged in the arrangement space Sp in the first posture, the first device D1 is attracted toward the first opposing surface 21m due to the magnetic attraction force between the power transmitter-side magnet 63 and the power receiver-side magnet DM, and the first device D1 comes into proximity to or into contact with the first opposing surface 21m (in the present embodiment, the first device D1 comes into contact with the first opposing surface 21m). In other words, the first power transmission unit 6 supplies power to the first device D1 having the power receiver-side magnet DM. Note that being in proximity to the first opposing surface 21m refers to, for example, a case where, based on the position of the power receiving coil DC of the electronic device D arranged in the arrangement space Sp, the distance of the power receiving coil DC to the first opposing surface 21m is shorter than the distance to the second opposing surface 22m.

[0081] On the other hand, when the second device D2 is placed in the placement space Sp in the first attitude, the second device D2 does not include the power receiving-side magnet DM and is therefore not attracted to the first opposing surface 21m by magnetic attraction (does not come close to the first opposing surface 21m). In this embodiment, as described above, the bottom surface 20m is inclined forward (toward the second opposing surface 22m). Therefore, the second device D2 (the first main surface on which the display DD is placed) comes close to or into contact with the second opposing surface 22m due to the action of gravity. Note that being close to the second opposing surface 22m refers to, for example, a case where, based on the position of the power receiving coil DC of the electronic device D placed in the placement space Sp, the distance between the power receiving coil DC and the second opposing surface 22m is shorter than the distance between the power receiving coil DC and the first opposing surface 21m.

[0082] When the electronic device D is placed in the placement space Sp in the first posture and the power transfer efficiency between the first power transmitting coil 62 of the first power transmitting unit 6 and the power receiving coil DC of the electronic device D is equal to or greater than a first specified value, the power feeding circuit 83 continues to supply power to the first power transmitting unit 6. When the electronic device D is removed from the placement space Sp or the electronic device D changes to a posture different from the first posture and the power transfer efficiency with the power receiving coil DC of the electronic device D becomes smaller than the first specified value, the power feeding circuit 83 stops the power supply.

[0083] On the other hand, as shown in FIG. 9, when the second device D2 is placed in the arrangement space Sp in the second posture and the second device D2 comes close to or into contact with the second opposing surface 22m due to the action of gravity, the power supply circuit 83 supplies power only to the second power transmission unit 7 (second power transmission coil 71).

[0084] Here, the second posture refers to a posture in which the second main surface of the device housing DH of the electronic device D (the main surface opposite to the first main surface on which the display DD is arranged) faces the second opposing surface 22m.

[0085] In the arrangement space Sp, a magnetic flux (magnetic field) generated by the second power transmitting unit 7 acts on the power receiving coil DC of the electronic device D arranged adjacent to or close to the second opposing surface 22m. When the electronic device D (second device D2) is arranged in the arrangement space Sp in the second posture, gravity acts on the electronic device D because the second opposing surface 22m (bottom surface 20m) is inclined, and the electronic device D is attracted toward the second opposing surface 22m, so that the second device D2 (second main surface) approaches or comes into contact with the second opposing surface 22m (in this embodiment, the electronic device D comes into contact with the second opposing surface 22m). In other words, the second power transmitting unit 7 is also compatible with the second device D2 that does not have a power receiving-side magnet DM. Note that the power supply efficiency is higher when the first device D1 is placed in the placement space Sp in the first posture and in proximity to or in contact with the first opposing surface 21 m than when the first device D1 is placed in the placement space Sp in the second posture and in proximity to or in contact with the second opposing surface 22 m. In other words, the power supply efficiency for the first device D1 is higher when the first power transmission unit 6 supplies power than when the second power transmission unit 7 supplies power.

[0086] The power supply circuit 83 continues supplying power to the second power transmission unit 7 when the electronic device D is placed in the placement space Sp in the second posture and the power supply efficiency between the second power transmission coil 71 of the second power transmission unit 7 and the power receiving coil DC of the electronic device D is equal to or greater than a second specified value. The power supply circuit 83 stops supplying power when the electronic device D is removed from the placement space Sp or when the electronic device D changes to a posture different from the second posture and the power supply efficiency between the electronic device D and the power receiving coil DC of the electronic device D becomes smaller than the second specified value. Note that the first specified value and the second specified value may be the same or different.

[0087] The power supply circuit 83 detects that the first device D1 or the second device D2 is placed in the placement space Sp based on signals from switches, sensors, and the like that the in-vehicle wireless power supply apparatus 100 further includes.

[0088] 1, the power receiving coil DC of each of the first device D1 and the second device D2 is arranged on the opposite side to the display DD. That is, when the first power transmitting unit 6 supplies power to the electronic device D, the electronic device D is arranged in the arrangement space Sp so that the display DD faces the Q1 side (Y1 side) as shown in FIGS. 8 and 10, and when the second power transmitting unit 7 supplies power, the electronic device D is arranged in the arrangement space Sp so that the display DD faces the Q2 side (Y2 side) as shown in FIGS. 9 and 11.

[0089] As described with reference to FIG. 3, the first wall 21 (first opposing surface 21m) is disposed on the Y2 side of the arrangement space Sp. Therefore, when the electronic device D disposed in the arrangement space Sp is viewed along the Q direction, most of the electronic device D is covered by the first wall 21. Specifically, as shown in FIG. 10, the first wall 21 overlaps most of the second main surface of the device housing DH of the electronic device D (first device D1) powered by the first power transmission unit 6, the second main surface being on the opposite side to the display DD. Furthermore, as shown in FIG. 11, the first wall 21 overlaps most of the display DD of the electronic device D (second device D2) powered by the second power transmission unit 7, thereby preventing inattentive driving.

[0090] [Effects of the embodiment] (1) As described above, the in-vehicle wireless power feeder 100 according to this embodiment forms only one arrangement space Sp in which an electronic device D can be arranged. The first power transmission unit 6 and the second power transmission unit 7 face each other across the arrangement space Sp, and the first power transmission unit 6 is capable of feeding power to a first device D1 whose second main surface is in proximity to (or in contact with) the first opposing surface 21m of the arrangement space Sp by magnetic attraction, and the second power transmission unit 7 is capable of feeding power to a second device D2 whose second main surface is in proximity to (or in contact with) the second opposing surface 22m of the arrangement space Sp. In other words, the in-vehicle wireless power feeder 100 is capable of feeding power to two types of electronic devices D (with different specifications) arranged in one arrangement space Sp. In other words, the in-vehicle wireless power feeder 100 shares a space in which the two types of electronic devices D can be arranged. As a result, the in-vehicle wireless power feeder 100 can be made more compact. That is, the in-vehicle wireless power supply apparatus 100 capable of supplying power to electronic devices D of a plurality of specifications can be made compact.

[0091] Furthermore, since the configuration of the in-vehicle wireless power feeder 100 can be simplified, the cost of the in-vehicle wireless power feeder 100 can be reduced.

[0092] Furthermore, for example, when power is supplied to two electronic devices D simultaneously, the power supply to one electronic device D decreases and the power supply time increases compared to when power is supplied to only one electronic device D. A possible configuration to avoid the increase in power supply time is to increase the maximum output of the power supply circuit by, for example, arranging multiple power supply circuits. However, a configuration that increases the maximum output of the power supply circuit increases the cost of the in-vehicle wireless power supply device. There is also a risk that the in-vehicle wireless power supply device will become larger. On the other hand, the in-vehicle wireless power supply device 100 according to this embodiment supplies power to only one electronic device D. In other words, the in-vehicle wireless power supply device 100 can prevent a decrease in the power supply power and prevent the in-vehicle wireless power supply device 100 from becoming larger. In addition, costs can be reduced.

[0093] Furthermore, the first power transmission unit 6 has a power transmission side magnet 63 that fixes the first device D1 so as to increase power supply efficiency. This improves the power supply efficiency for the first device D1. In other words, the first device D1 is placed at a position on the QX plane with respect to the first power transmission unit 6 that provides the highest power supply efficiency. At this time, the first device D1 is separated from the bottom surface 20m, but is attracted to the first opposing surface 21m by magnetic force, and therefore the first attitude is maintained without being separated from the first opposing surface 21m by gravity.

[0094] The first power transmission unit 6 is responsible for supplying power to a first device D1 that includes a power receiving-side magnet DM, and the second power transmission unit 7 is responsible for supplying power to a second device D2 that does not include a power receiving-side magnet DM. The first opposing surface 21m and the second opposing surface 22m are inclined with respect to the Z direction. Therefore, when attempting to charge an electronic device D, a user places the first device D1 that includes the power receiving-side magnet DM in the arrangement space Sp in the first or second orientation, and places the second device D2 that does not include a power receiving-side magnet DM in the arrangement space Sp in the second orientation. In other words, a user attempting to charge the second device D2 will select the second orientation rather than the first orientation when placing the second device D2 in the arrangement space Sp, and the second device D2 will be maintained in a position where power can be supplied (a position close to the second opposing surface 22m) due to gravity, and power will be supplied to the second device D2. On the other hand, a user who wishes to charge the first device D1 can select either the first orientation or the second orientation, but if the user recognizes that it is the first device D1, the user selects the first orientation and places the device in the placement space Sp. This allows the user to select an orientation state with high power supply efficiency for supplying power to the first device D1.

[0095] (2) In the above embodiment, the first opposing surface 21m is disposed rearward of the vehicle C relative to the second opposing surface 22m. This prevents the electronic device D from jumping out of the installation space Sp even when the vehicle C suddenly starts and / or stops. Furthermore, the first opposing surface 21m blocks the view of the electronic device D, preventing inattentive driving. Specifically, as described above, most of the display DD of the electronic device D is covered by the first opposing surface 21m (first wall 21) during power supply by the second power transmission unit 7, preventing inattentive driving during power supply by the second power transmission unit 7. Furthermore, the second opposing surface 22m is inclined toward the front of the vehicle C relative to the vertical direction, allowing the electronic device D to be closer to the second power transmission unit 7 disposed at the front of the vehicle C, thereby improving power supply efficiency. Furthermore, the first opposing surface 21m allows the electronic device D to be closer to the first power transmission unit 6 due to magnetic attraction, thereby improving power supply efficiency. Furthermore, during power supply from the first power transmission unit 6, the display DD of the electronic device D faces the Y1 side (front), which can prevent the driver from looking away from the screen while driving.

[0096] (3) In the above embodiment, for example, even if the electronic device D arranged close to the second opposing surface 22m tilts toward the first opposing surface 21m due to vibration or the like, the electronic device D does not remain supported by the tip of the first opposing surface 21m, and gravity acts on the electronic device D, allowing it to return to its original state in which it was arranged close to the second opposing surface 22m.

[0097] (4) In the above embodiment, the first case 2 includes side surfaces 24m in the X direction (left and right direction) with respect to the placement space Sp. Therefore, even if gravitational acceleration (centrifugal force) acts on the electronic device D in the X direction, for example, when the vehicle C travels around a curve, the electronic device D can be prevented from jumping out of the placement space Sp.

[0098] (5) The first wall 21 of the first case 2 is separated from the side wall 24 of the second wall 22, forming a gap. Therefore, even if an object smaller than the electronic device D, such as a key or a card, enters the placement space Sp, the object can be easily removed through the gap. Furthermore, by placing the first device D1 or the second device D2 with a foreign object remaining in the placement space Sp, it is possible to prevent inefficient power supply to the electronic device D or the electronic device D from being unable to be powered.

[0099] (6) In the above embodiment, the third distance d3 (the distance between the first wall 21 and the first side surface 241m) and the fourth distance d4 (the distance between the first wall 21 and the second side surface 242m) are equal to each other. Therefore, the centers of the first opposing surface 21m and the second opposing surface 22m in the X direction can be aligned (including approximately aligned), and the user can use the first opposing surface 21m (first wall 21) as a mark for the center position of the electronic device D (the first device D1 and / or the second device D2) in the X direction. This allows the electronic device D to be positioned so as to increase power supply efficiency.

[0100] (7) In the above embodiment, the power supply circuit 83 is disposed on the side of the second power transmission unit 7, which allows the first wall 21 to be made more compact. In other words, when the projected area of ​​the first wall 21 is reduced in the Y direction, a portion of the electronic device D can be exposed in the Y direction. Therefore, if the electronic device D is the second device D2, it becomes possible to align the center in the X direction while looking directly at the second device D2. Furthermore, when the size of the first wall 21 in the Y direction is shorter (smaller) than the electronic device D, the first wall 21 can prevent a decrease in the efficiency of operations such as inserting the electronic device D into the arrangement space Sp and removing the electronic device D from the arrangement space Sp. Furthermore, the in-vehicle wireless power supply apparatus 100 can be made more compact.

[0101] (8) Because the second power transmission unit 7 includes multiple (three in this embodiment) power transmission coils, the power transmission surface (surface to which power can be supplied) can be made wider than the first power transmission unit 6 that includes a single power transmission coil (the first power transmission coil 62). This increases the degree of freedom in the size of the electronic device D (the second device D2), improving convenience. Specifically, the second power transmission coils 71 are arranged such that the central axes of the respective second power transmission coils 71 are aligned linearly in the P direction and spaced apart from each other, with the bottom surface 20 m as a reference. This allows a second power transmission coil 71 that provides high power supply efficiency to be selected depending on the size of the electronic device D in the P direction. Therefore, for example, an electronic device D that is relatively large in size in the P direction can be supplied with power by the second power transmission coil 71 closest to P1, and an electronic device D that is relatively small in size in the P direction can be supplied with power by the second power transmission coil 71 closest to P2. It is possible to select a second power transmission coil 71 that provides higher power supply efficiency depending on the size of the electronic device D in the P direction. However, since the positions of the multiple second power transmission coils 71 and the power receiving coil DC of the electronic device D in the P direction are not variable, when the electronic device D is the first device D1, it is more efficient to supply power by placing the electronic device D in the first posture close to the first opposing surface 21m.

[0102] Other Embodiments (1) The configurations disclosed in the above embodiments can be applied in combination with configurations disclosed in other embodiments, as long as no contradictions arise. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate within the scope of the present disclosure.

[0103] (2) For example, in the above embodiment, the bottom surface 20m is inclined forward (inclined so that the Y1 side is closer to the Z2 side than the Y2 side), but the bottom surface 20m may be flat or inclined backward (inclined so that the Y2 side is closer to the Z2 side than the Y1 side). In this case, the first opposing surface 21m and the second opposing surface 22m are interchangeable (the first opposing surface 21m is on the Y1 side, and the second opposing surface 22m is on the Y2 side), and the positions of the first power transmission unit 6 and the second power transmission unit 7 in the Y direction can be interchangeable. This makes it possible to prevent the electronic device D from jumping out of the arrangement space Sp even when the vehicle C suddenly stops or suddenly decelerates.

[0104] (3) In the above embodiment, the first tip 21s is located closer to the Y1 side than the second base end 22k. However, the first tip 21s does not have to be located closer to the Y1 side than the second base end 22k.

[0105] (4) In the above embodiment, the first case 2 has two side walls 24. However, the first case 2 may have only one side wall 24. Alternatively, the side wall 24 may be omitted.

[0106] (5) In the above embodiment, the first wall portion 21 and the first side surface 241m are spaced apart, but the first wall portion 21 and the first side surface 241m do not have to be spaced apart. Similarly, the first wall portion 21 and the second side surface 242m do not have to be spaced apart.

[0107] (6) In the above embodiment, the third distance d3 and the fourth distance d4 are equal to each other. However, the third distance d3 and the fourth distance d4 may be different from each other.

[0108] (7) In the above embodiment, the power supply circuit 83 is arranged so as to face the arrangement space Sp across the second opposing surface 22m, that is, on the side of the first case 2 where the second power transmission unit 7 is arranged. However, the power supply circuit 83 is not limited to being arranged on the side of the second power transmission unit 7, and may be arranged, for example, on the side of the first power transmission unit 6.

[0109] (8) In the above embodiment, the number of coils constituting the second power transmitting coil 71 is not limited to three, and may be one, two, four or more.

[0110] (9) In the above embodiment, the power transmitter-side magnet 63 was disposed at the air-core portion of the first power transmitter coil 62. However, the power transmitter-side magnet 63 may be disposed at a position where a magnetic attractive force is generated between the power transmitter-side magnet 63 and the power receiver-side magnet DM of the first device D1, thereby increasing the efficiency of power supply to the first device D1. For example, the power transmitter-side magnet 63 may be annular and disposed only along the outer periphery of the first power transmitter coil 62, or may be circular and disposed at the air-core portion of the first power transmitter coil 62 and along the outer periphery of the first power transmitter coil 62.

[0111] (10) In the above embodiment, the electromagnetic induction method has been described as an example of a power supply method. However, the in-vehicle wireless power supply device 100 may supply power to the electronic device D using a power supply method other than the electromagnetic induction method, such as an electric field coupling method or a magnetic field resonance method.

[0112] (11) In the above embodiment, the first wall portion 21 and the second wall portion 22 are integrally formed, but the first wall portion 21 and the second wall portion 22 may be separate bodies.

[0113] (12) In the above embodiment, the substrate 81 is a rigid substrate, but it may be a substrate that is capable of elastic deformation, such as an FPC (Flexible Printed Circuit).

[0114] (13) In the above embodiment, the in-vehicle wireless power feeder 100 is described as being integrally formed with the dashboard DB of the vehicle C. However, the in-vehicle wireless power feeder 100 may be fixed to a location other than the dashboard DB as long as it is mounted on the vehicle C. Furthermore, the method for fixing the housing 1 of the in-vehicle wireless power feeder 100 is not particularly limited, and the housing 1 may be fixed to the dashboard DB with adhesive tape or the like. Furthermore, the first case 2 may be made up of multiple first cases 2, at least some of which may be part of the dashboard DB.

[0115] (14) In the above embodiment, the first wall portion 21 is described as having a tongue-like shape when viewed along the Y direction. However, the shape of the first wall portion 21 when viewed along the Y direction is not limited to a tongue-like shape, and may be, for example, an inverted trapezoid, a shape combining a circle and a rectangle, or the like.

[0116] (15) In the above embodiment, the first opposing surface 21m and the second opposing surface 22m are each a flat surface along the XP plane. However, the second opposing surface 22m does not have to be a flat surface along the XP plane.

[0117] (16) In the above embodiment, the area of ​​the second opposing surface 22m is larger than the area of ​​the first opposing surface 21m. However, the area of ​​the second opposing surface 22m may be the same as the area of ​​the first opposing surface 21m, or may be smaller than the area of ​​the first opposing surface 21m.

[0118] (17) In the above embodiment, the first opposing surface 21m and the second opposing surface 22m are parallel to each other. However, the first opposing surface 21m and the second opposing surface 22m may not be parallel to each other. [Industrial Applicability]

[0119] The present disclosure can be used in an in-vehicle wireless power supply device. [Explanation of symbols]

[0120] 1: Housing Sp: Placement space 5: Power supply unit 6: First power transmission section 7: Second power transmission section 20m: Bottom 21m: 1st facing surface 21s: 1st tip (tip) 22m: 2nd opposing surface 22k: 2nd proximal end (base end) 24m: side 62: First power transmission coil (power transmission coil) 63: Power transmission magnet 71: Second power transmission coil (power transmission coil) 83: Power supply circuit 100: In-vehicle wireless power supply device C: Vehicle D: Electronic device (powered object) DM: Receiving magnet

Claims

1. An in-vehicle wireless power supply device that is mounted on a vehicle and can supply power wirelessly to a power supply object, a housing having a first opposing surface and a second opposing surface opposed to each other across the arrangement space, the housing defining an arrangement space in which the power-supplying object can be arranged; a power supply unit including a first power transmission unit and a second power transmission unit, the power supply unit supplying power to only one of the first power transmission unit and the second power transmission unit; the first power transmission unit includes a power transmission side magnet that fixes the power-receiving object by magnetic attraction force, is disposed to face the arrangement space across the first opposing surface, and is capable of supplying power to the power-receiving object that is disposed close to the first opposing surface of the arrangement space by the magnetic attraction force; The second power transmission unit is arranged to face the arrangement space across the second opposing surface, and is capable of supplying power to the power-receiving object arranged in close proximity to the second opposing surface of the arrangement space.

2. 2. The in-vehicle wireless power supply device according to claim 1, wherein the first opposing surface and the second opposing surface oppose each other in a front-to-rear direction of the vehicle such that the first opposing surface is disposed rearward of the vehicle relative to the second opposing surface, and each of the first opposing surface and the second opposing surface is mounted on the vehicle so as to be inclined toward the front with respect to a vertical direction of the vehicle.

3. the first opposing surface and the second opposing surface oppose each other in a front-rear direction of the vehicle such that the first opposing surface is disposed on a front side of the vehicle with respect to the second opposing surface, The in-vehicle wireless power feeder according to claim 1 , wherein each of the first opposing surface and the second opposing surface is mounted on the vehicle so as to be inclined toward the rear side with respect to a vertical direction of the vehicle.

4. The housing further has a bottom surface that is disposed vertically below the arrangement space and that defines the arrangement space, the bottom surface is inclined such that a front side in the front-rear direction is lower in the vertical direction than a rear side, Each of the first opposing surface and the second opposing surface stands upright from the bottom surface, the first opposing surface has a tip on an opposite side to a side connected to the bottom surface, the second opposing surface has a base end connected to the bottom surface, The in-vehicle wireless power feeder according to claim 2 , wherein the tip end is located closer to the front of the vehicle than the base end.

5. The in-vehicle wireless power supply device according to any one of claims 1 to 4, wherein the housing further has two side surfaces facing each other in a left-right direction of the vehicle with the arrangement space therebetween.

6. The in-vehicle wireless power supply device according to claim 5 , wherein the first opposing surface is spaced apart from each of the two side surfaces.

7. 7. The in-vehicle wireless power supply device according to claim 6, wherein a center of the first opposing surface in the left-right direction and a center of the second opposing surface in the left-right direction coincide with each other, and distances between the first opposing surface and the two side surfaces are equal to each other.

8. each of the first power transmitting unit and the second power transmitting unit includes a power transmitting coil; the power supply unit further includes a power supply circuit capable of supplying power to the power transmission coil, The in-vehicle wireless power feeder according to claim 1 , wherein the power feed circuit is disposed on a side of the second power transmitting unit.

9. The in-vehicle wireless power feeder according to claim 8 , wherein the first power transmitting unit includes one of the power transmitting coils, and the second power transmitting unit includes a plurality of the power transmitting coils.

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