JP2006029787A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately position a primary coil and a secondary coil, which effects the distance between them and a passage of magnetic flux, for efficiently charging electronic equipment equipped with a charge system by conventional electromagnetic inductive coupling. <P>SOLUTION: In the electronic equipment, a primary cell 1, the secondary coil 2, and a magnetic flux shielding member 4 are fixed to a frame body 3. The frame body 3 is fixed to a circuit board 5 with a plurality of positioning bosses etc. It is possible to arrange an electronic component between the secondary coil 2 and the circuit board 5, which has been a dead space, by the magnetic flux shielding member 4. A short-circuit preventing wall 7 for preventing an electrical short circuit between the electronic component 6 and the secondary cell 1 is constituted in the frame body 3. It is thereby possible to improve positioning precision each part and improve the assembly efficiency of the electronic equipment. It is also possible to improve charge efficiency by electromagnetic inductive coupling. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device having a function of charging a secondary battery by electromagnetic inductive coupling between a primary coil and a secondary coil, and relates to an electronic device having a structure in which electronic components are arranged in a built-in frame.

  An electronic device that is charged by electromagnetic inductive coupling (hereinafter simply referred to as electromagnetic inductive coupling) requires a secondary coil for charging and a secondary battery. In the case of electromagnetic induction coupling, the planar positional relationship and the vertical positional relationship (interval) between the primary coil on the power supply side and the secondary coil on the power receiving side are important. If the planar positional relationship between the primary coil and the secondary coil is deviated or the distance between them is too large, the efficiency of electromagnetic induction decreases. This is because the induced electromotive force generated in the secondary coil is not sufficient if the magnetic flux from the primary coil does not reach the secondary coil sufficiently. Further, when the distance between the primary coil and the secondary coil is small, these coils generate heat. Furthermore, due to the influence of magnetic flux generated between the primary coil and the secondary coil, the efficiency of electromagnetic induction is reduced if a metal body or a magnetic body exists close to these coils.

There are electronic components constituting an electronic device that are mounted on a circuit board inside the electronic device and those that are housed in a built-in frame. Of course, the circuit board itself may be stored in the frame.
Depending on the electronic equipment, the electronic components housed in the frame body may be distributed and arranged for the purpose of increasing mounting efficiency and downsizing. Even in such a case, it is necessary that electrical connection and insulation of the electronic components can be easily and reliably performed.
A conventional electromagnetic induction rechargeable portable timepiece disclosed in Patent Document 1 discloses a charging structure using electromagnetic induction coupling, and it is necessary to accurately position a primary coil and a secondary coil, and electromagnetic induction The structure which eliminates the influence of a magnetic flux by arrange | positioning a magnetic shield board with respect to the situation where the magnetic flux at the time of a coupling | bonding influences the movement for timepieces is disclosed.

This will be described in detail with reference to the drawings. FIG. 5 shows the prior art disclosed in Patent Document 1. FIG. 5 is a diagram in which the prior art shown in Patent Document 1 is rewritten without departing from the gist of the invention.
In FIG. 5, 50 is a watch case, 51 is a movement, 52 is a magnetic shield plate, 53 is a secondary coil, 54 is a charger, 55 is a charging circuit, and 56 is a primary coil.

In the watch case 50, the upper side in FIG. 5 is the dial side and the lower side is the back cover side. The watch case 50 is provided with a movement 51, and a magnetic shield plate 52 and a secondary coil 53 are provided on the back cover side of the watch case 50. The magnetic shield plate 52 is a shielding means provided to shield the influence of magnetic flux received by the movement 51 and the like during charging by electromagnetic induction coupling described later. The charger 54 is provided with a charging circuit 55 and a primary coil 56.
The watch case 50 and the charger 54 are spaced apart. When the charging operation is performed in this state, the watch case 50 uses the induced electromotive force generated in the secondary coil 53 due to electromagnetic induction coupling between the secondary coil 53 of the watch case 50 and the primary coil 56 of the charger 54. The secondary battery (not shown) provided inside is charged.

JP 2002-55176 A (page 4, FIG. 1)

  In order to efficiently perform charging by electromagnetic inductive coupling, the mutual positional relationship that affects the distance between the primary coil and the secondary coil and the path of the magnetic flux is important. An electronic device that needs to be charged by electromagnetic inductive coupling must accurately arrange electronic components that constitute the electronic device when assembled. That is, in the prior art disclosed in Patent Document 1, the secondary coil 53, the magnetic shield plate 52, and the like must be correctly arranged without being shifted to a desired position. If these electronic components are not arranged at the correct positions, for example, the induced electromotive force generated in the secondary coil 53 is insufficient, or the timepiece movement 51 malfunctions due to the influence of magnetic flux leaking from the magnetic shield plate 52. If this happens, the electronic device will not have the charging efficiency as designed.

A conventional electromagnetic induction rechargeable portable timepiece disclosed in Patent Document 1 includes a timepiece movement 51 and a secondary coil 53. The secondary coil 53 is widely arranged over the entire back cover of the watch case 50, and a secondary battery not shown in Patent Document 1 is considered to be mounted in the watch movement 51. It is done.
The electromagnetic induction rechargeable portable timepiece shown in Patent Document 1 is one of electronic devices having a charging function including a secondary coil 53 and a secondary battery. There is no description about the structure, for example, the arrangement of the secondary coil 53 and the secondary battery. It is extremely important to arrange these electronic components accurately and to prevent the electronic components from shifting during the manufacturing process of the electronic device and the use of the electronic device.

  In order to achieve the above object, the electronic device of the present invention employs the following structure.

  A secondary coil that generates current by electromagnetic induction from the primary coil, a secondary battery that stores the current as electric power, a circuit board, and a magnetic flux shielding means that shields magnetic flux generated by the primary coil and the secondary coil. The secondary coil and the secondary battery are arranged in a plane within the plane range of the circuit board, and the magnetic flux shielding means is provided on the circuit board side of the secondary coil, and is provided between the magnetic flux shielding means and the circuit board. An electronic component is provided.

  A frame for fixing the secondary coil, the secondary battery, the circuit board, and the magnetic flux shielding means; the frame for positioning the secondary coil; and a secondary coil mounting portion for positioning and fixing the secondary coil. And a secondary battery mounting part for fixing the circuit board, a circuit board mounting part for positioning and fixing the circuit board, and a magnetic flux shielding means mounting part for positioning and fixing the vertical and horizontal directions of the magnetic flux shielding means. It is characterized by comprising.

  The frame has a short-circuit prevention unit for preventing an electrical short circuit provided between the electronic component and the secondary battery.

  The magnetic flux shielding means is formed integrally with the core of the secondary coil and is made of a magnetic material.

  In the electronic device of the present invention, the secondary coil and the secondary battery are provided in a plane within the plane range of the circuit board, and the magnetic flux shielding means is provided on the circuit board side of the secondary coil. An electronic component is provided between the magnetic flux shielding means and the circuit board. With such a configuration, an electronic component arrangement space on the circuit board is expanded, and a required area of the circuit board is reduced. As a result, the circuit board can be reduced in size, and the electronic device can be reduced in size and thickness.

Further, a frame for fixing the secondary coil, the secondary battery, the circuit board, and the shielding means is provided, and the secondary coil mounting part, the secondary battery mounting part, the circuit board mounting part, and the magnetic flux for fixing these are provided on the frame. The shielding means mounting portion is provided integrally. Thereby, the respective positions of the secondary coil, the secondary battery, the circuit board, and the magnetic flux shielding means are determined and maintained, so that the assembling property and the reliability after assembling are improved. In particular, since the secondary coil can be accurately positioned to improve charging efficiency, the secondary coil itself can be miniaturized with the same charging capability, and thus the electronic device can be miniaturized.

An electronic apparatus of the present invention will be described with reference to the drawings. In the embodiment of the present invention, a configuration in which a secondary coil, a secondary battery, a circuit board, and magnetic flux shielding means are attached to an integrally molded frame will be described.
In the electronic device of the present invention, the secondary battery attached to the secondary battery attachment portion of the frame body and the secondary coil attached to the secondary coil attachment portion of the frame body are arranged so as not to overlap in plan view. These secondary coils and the secondary battery are arranged side by side so as not to deviate from the planar range of the circuit board.
By the secondary coil mounting portion of the frame body, the secondary coil can be arranged so that the position of the secondary coil exactly coincides with the primary coil of a charger having a primary coil (hereinafter referred to as a cradle) in the planar and vertical directions. Further, positioning is performed such that the vertical dimension with respect to the primary coil is accurately determined by the thickness (vertical dimension) of the secondary coil mounting portion.
The magnetic flux shielding means can be positioned and provided on the circuit board side of the secondary coil by the magnetic flux shielding means mounting portion of the frame. Thereby, since the positional relationship between the secondary coil and the circuit board becomes accurate, the generated magnetic flux can be shielded, and an electronic component can be provided between the magnetic flux shielding means and the circuit board.
In addition, by providing a short-circuit prevention unit between the secondary battery and the electronic component, it is possible to prevent damage or failure of the electronic device due to an electrical short circuit.

[Description of Configuration of Secondary Battery Inside of Electronic Device of the Present Invention: FIG. 1]
The configuration of the electronic apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a view of the inside of the electronic device of the present invention as viewed from the secondary battery side. 1 is a secondary battery, 2 is a secondary coil, 3 is a frame, 4 is a magnetic flux shielding member, 5 is a circuit board, 6 is an electronic component provided on the same plane, 7 is a short-circuit prevention wall, and 10 is a secondary battery connection Terminal 10b is a secondary battery cathode connection piece, 11 is a frame positioning boss, 12 is a magnetic flux shielding member positioning boss, 13 is a secondary coil positioning boss, 14 is a secondary battery mounting portion, 17 is a secondary coil connection terminal, 29 is a secondary coil connection terminal through hole, 30 is a secondary coil connection through hole, 31 is a secondary battery anode connection pattern, 33 is a secondary battery cathode connection pattern, 34 is a secondary coil positioning hole, and 35 is a magnetic flux shield. A member positioning hole 36 is a frame positioning hole.

The secondary battery connection terminal 10 is connected so as to sandwich the secondary battery 1, and the secondary battery 1, the secondary coil 2 that generates current by electromagnetic induction, and the magnetic flux shielding member 4 for shielding magnetic flux are framed. The position is fixed by 3 and connected to the circuit board 5.
The secondary battery connection terminal 10 connects the anode of the secondary battery 1 and the circuit board 5. In FIG. 1, the upper surface and the side surface of the secondary battery 1 are the anode, and the lower surface is the cathode. The secondary battery connection terminal 10 has a secondary battery anode connection piece 10 a (not shown in FIG. 1) and a secondary battery cathode connection piece 10 b, and a secondary battery anode connection pattern 31 provided on the circuit board 5. And the secondary battery cathode connection pattern 33 respectively.

For example, the frame 3 is made of a plastic molded product such as ABS (Acrylonitrile Butadiene Styrene) resin having high strength and high molding accuracy. Then, the position of the secondary battery 1 is fixed. Moreover, since the secondary coil connection terminal through-hole 29 which penetrates the secondary coil connection terminal 17 positions a secondary coil, this secondary coil connection terminal through-hole 29 comprises a secondary coil attaching part. Further, since the frame body positioning boss 11 is fitted and positioned in the frame body positioning hole 36 of the circuit board 5, the frame body positioning boss 11 constitutes the circuit board mounting portion. Similarly, since the magnetic flux shielding member positioning hole 35 and the magnetic flux shielding member 4 are fitted and positioned, the magnetic flux shielding member positioning hole 35 constitutes a magnetic flux shielding means mounting portion.

  The secondary coil 2 has a secondary coil positioning boss 13 and a secondary coil connection terminal 17. The magnetic flux shielding member 4 has a secondary coil connection terminal through hole 29 and a secondary coil positioning hole 34. The secondary coil 2 is positioned with respect to the magnetic flux shielding member 4 by fitting the secondary coil positioning boss 13 into the secondary coil positioning hole 34. The secondary coil connection terminal 17 passes through the secondary coil connection terminal through hole 29, is positioned with the frame body 3, and is connected to the circuit board 5 through the secondary coil connection through hole 30.

The magnetic flux shielding member 4 is magnetic flux shielding means and is made of a magnetic material such as ferrite. It is widely known that this magnetic material has an effect of shielding the magnetic flux transmitted therethrough. The frame 3 has a shape that matches the shape of the magnetic flux shielding member 4.
The magnetic flux shielding member 4 is positioned with respect to the frame 3 by fitting the magnetic flux shielding member positioning boss 12 into the magnetic flux shielding member positioning hole 35.

The frame 3 in which the arrangement positions of the secondary battery 1, the secondary coil 2, and the magnetic flux shielding member 4 are fixed is connected to the circuit board 5. At this time, the secondary battery anode connection piece 10a (not shown in FIG. 1) and the secondary battery cathode connection piece 10b are connected to the secondary battery anode connection pattern 31 and the secondary battery cathode connection pattern 33, respectively.
The frame body 3 is positioned with respect to the circuit board 5 by fitting the frame body positioning boss 11 into the frame body positioning hole 36.
In FIG. 1, there are two frame body positioning holes 36 provided in the circuit board 5. In order to connect the frame body 3 and the circuit board 5 more accurately, it is preferable to provide a plurality of frame body positioning bosses 11 and frame body positioning holes 36. Of course, the fixing of the frame 3 and the circuit board 5 is not limited to this, and means other than the positioning boss may be used. For example, it can be fixed with a pin, a hook, or the like, and when a screw is used, it can be firmly fixed in the vertical direction against displacement.
With such a configuration, the secondary battery 1 and the secondary coil 2 can be arranged side by side in a plane within the circuit board 5. In the electronic device of the present invention, the secondary battery 1 and the secondary coil 2 can be arranged so as not to be overlapped in the vertical direction by the frame 3, and further, their arrangement position is not shifted by vibration or the like. Even if a secondary battery, which is a metal body, is provided close to a coil that performs electromagnetic induction coupling, the efficiency of electromagnetic induction does not decrease.

An electronic component is provided between the magnetic flux shielding member 4 and the circuit board 5. This is because the magnetic flux shielding member 4 is provided between the secondary coil 2 and the circuit board 5 so that the electronic component provided on the circuit board 5 can shield the influence of magnetic flux from the primary coil (not shown) of the charger.
In many cases, the circuit board 5 is provided with an electronic component in which electrodes such as capacitors and resistors are exposed on the surface. On the other hand, since the upper surface and the outer periphery of the secondary battery 1 are anodes, in order to compensate for safe and stable operation as an electronic device, the secondary battery 1 and other electronic components It is necessary to prevent electrical short circuit. Therefore, in the electronic device of the present invention, in order to prevent an electrical short circuit between the secondary battery 1 and an electronic component provided between the magnetic flux shielding member 4 and the circuit board 5, a short circuit prevention unit is provided on the frame 3 as a short circuit prevention unit. A wall 7 is provided.

The short-circuit prevention wall 7 is provided on the secondary battery 1 side of the portion where the frame 3 and the magnetic flux shielding member 4 are connected, and the position of the secondary battery 1 when the secondary battery 1 moves unexpectedly (for example, due to vibration). Has a role to fix. In the example shown in FIG. 1, the frame body 3 is three-dimensionally configured to fix the magnetic flux shielding member 4, and to secure a space for providing electronic components on the circuit board 5 below the frame body 3. It has the structure which has.
The portion of the frame 3 to which the magnetic flux shielding member 4 is fixed has a three-dimensional structure because it has the role of increasing the area efficiency of the circuit board 5 by arranging electronic components on the circuit board 5 below the part. The short-circuit prevention unit is not limited to being configured with the short-circuit prevention wall 7 using the three-dimensionally configured wall surface of the frame 3. For example, a new convex shape such as a pin may be provided.

[Description of cross-sectional configuration inside electronic apparatus of the present invention: FIG. 2]
FIG. 2 is a diagram schematically showing a cross-sectional view for explaining the inside of the electronic apparatus of the present invention. In FIG. 2, the same number is given to the same component as FIG. 8 is an electronic component provided on a different plane, 9 is a flexible wiring board, 15 is a connector for a flexible wiring board, and 16 is a display panel.
In the electronic device of the present invention, the mounting position of the secondary coil 2 is set higher than that of the secondary battery 1 in order to improve charging efficiency when electric power is transmitted from the primary coil (not shown) to the secondary coil 2 by electromagnetic induction coupling. Is provided at a higher position (that is, in the outer direction of the electronic device). This is because, when the secondary coil 2 is attached at a position lower than the secondary battery 1 (that is, in the direction toward the inside of the electronic device), the secondary battery 1 is made of metal, and thus magnetic flux generated during charging. This is because the charging efficiency is reduced.
Further, since the secondary coil 2 provided in the electronic device is often smaller than the primary coil provided in the cradle, similarly, the secondary coil 2 should be provided at a higher position (outside) than the secondary battery 1. convenient.

The secondary coil 2 is connected to the circuit board 5 via the secondary coil connection terminal 17. Although not shown, the rectifier circuit for rectifying the power transmitted to the circuit board 5 by electromagnetic induction coupling. A charging circuit for charging the secondary battery 1 and a protection circuit for safely charging and discharging the secondary battery 1 are provided.
In the space between the frame 3 and the circuit board 5 where the mounting positions of the secondary coil 2 and the magnetic flux shielding member 4 are fixed, there are electronic components 6 provided on the same plane as the secondary battery 1 and the like. If there is no magnetic flux shielding means 4, this space where electronic components cannot be installed due to the influence of magnetic flux can be used effectively. Of course, since the influence of the magnetic flux also reaches the circuit board, in such a case, conventionally, the circuit board is also covered with a means for shielding the magnetic flux, for example, a conductive shield plate. Since the electronic apparatus of the present invention is provided with the magnetic flux shielding means 4, the circuit board 5 is not affected by the magnetic flux. Accordingly, electronic components can be freely arranged on the surface of the circuit board 5 opposite to the secondary coil 2. These electronic components are electronic components 8 provided on different planes.

A desired functional circuit is configured by the electronic component 6 provided on the same plane as the secondary battery 1 or the like, or the electronic component 8 provided on a different plane. For example, a power supply circuit, a drive circuit for the display panel 16, a CPU (Central Processing Unit), and the like.
The display panel 16 is connected to a flexible wiring board connector 15 provided on the circuit board 5 by the flexible wiring board 9. As the flexible wiring board 9, a known FPC (Flexible Printed Circuit Board) or the like can be used. The display panel 16 is preferably an LCD (Liquid Crystal Display) or the like.
In order to construct these parts, means for fixing each part is required, but it is omitted because the illustration is complicated.

[Description of Position and Configuration of Electronic Device and Cradle of Present Invention: FIG. 3]
FIG. 3 is a diagram showing the positional relationship between the electronic device of the present invention and the cradle. It is for demonstrating a mode that the electronic device of this invention is charged using a cradle. In FIG. 3, the same numbers are assigned to the same components already described. 18 is an electronic equipment case, 19 is a cradle, 20 is a primary coil, 21 is a charger electronic component, 22 is a power connector, 23 is a power cable, 24 is a primary coil connection terminal, 25 is a circuit board for charger, and 27 is a primary coil. The positioning hole 28 is a charger circuit board positioning pin, and 37 is a wood screw.
The electronic device case 18 houses the electronic device of the present invention shown in FIG. FIG. 3 shows a state in which the electronic apparatus of the present invention shown in FIG.

The cradle 19 includes a primary coil 20, a charger electronic component 21 necessary for driving the cradle 19, a power connector 22 for taking in power from the outside, and a power cable 23 for connecting to an external power source. . Each component is provided on the circuit board 25 for the charger, and the primary coil 20 whose mounting position accuracy is particularly important is mounted via the primary coil connection terminal 24 to prevent positional deviation in the vertical and planar directions. That is, the primary coil connection terminal 24 has a role of a positioning pin, and positions the primary coil by fitting with the primary coil positioning hole 27 provided in the charging circuit board 25.
The charger circuit board 25 is firmly fixed to the inner wall of the cradle 19 by a plurality of charger circuit board positioning pins 28. In the charging by electromagnetic induction, the positional relationship between the primary coil 20 and the secondary coil 2 is important for maintaining the charging efficiency, and if the vertical direction and the plane direction are displaced, the charging efficiency may be significantly reduced. . In order to prevent charging efficiency deterioration, it is necessary to position the electronic device 18 and the cradle 19 with high accuracy. With regard to this positioning, a convex portion such as a positioning pin and a positioning hole or a positioning concave portion are provided in either or both of the electronic device 18 and the cradle 19. Moreover, as shown in FIG. 3, it is good also as a shape which both fit by devising the external shape of the electronic device 18, and the external shape of the cradle 19. As shown in FIG.

[Description of Integrated Configuration of Secondary Coil Core and Magnetic Shielding Member Constructing Electronic Device of the Present Invention: FIG. 4]
FIG. 4 is a diagram for explaining an example in which the secondary coil 2 and the magnetic flux shielding member 4 constituting the electronic apparatus of the present invention are integrally formed. In FIG. 4, the same numbers are assigned to the same components already described. Reference numeral 26 denotes a core.
When the magnetic flux shielding member 4 is made of a magnetic material such as ferrite, when the ferrite is used for the core 26 of the secondary coil 2, the core 26 and the magnetic flux shielding member 4 can be integrally formed. In FIG. 4, the secondary coil 2 is configured by winding a conductor with a conductor around the core 26 and sealing it with a casing. These windings, the casing, and the secondary coil connection terminal 17 are omitted.
By adopting such a configuration, the secondary coil positioning boss 13 which has been necessary as a means for fixing to the frame body 3 can be omitted, so that the configuration can be simplified and the assembly can be simplified.
In general, since a mold is used for forming ferrite, the shape accuracy after forming is very high, and the assembly accuracy requirements in the vertical and planar directions required for charging by electromagnetic induction are more easily realized.

  Although the configuration of the electronic device of the present invention has been described above, the feature of the electronic device of the present invention is that the secondary battery 1, the secondary coil 2 magnetic flux shielding member 4, and the circuit board 5 are accurately positioned by the frame 3. There is a point that can be. Thereby, the charging efficiency at the time of the charge by electromagnetic induction coupling improves. Further, even when unexpected vibration or impact is applied to the electronic device during assembly or use of the electronic device, the short-circuit prevention wall 7 can prevent contact between the secondary battery 1 and the electronic component. . Further, since the magnetic flux shielding member 4 eliminates the influence of the magnetic flux, the electronic component can be arranged between the secondary coil 2 and the circuit board 5 and the mounting efficiency of the electronic component is improved. is there.

The electronic device of the present invention relates to an electronic device that can be charged by electromagnetic inductive coupling, and improves the charging efficiency. Therefore, since the secondary coil mounted in an electronic device can be reduced in size, it can be used for a portable electronic device. Particularly, it is suitable for a small portable information terminal such as a wristwatch type or a card type.

It is a figure explaining the electronic device of this invention. It is a figure explaining the electronic device of this invention. It is a figure explaining the positional relationship of the electronic device of this invention and a cradle. It is a figure explaining the example which integrated the core of the secondary coil and magnetic flux shielding member which comprise the electronic device of this invention. It is a figure explaining the electronic device of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Secondary battery 2 Secondary coil 3 Frame 4 Magnetic flux shielding member 5 Circuit board 6 Electronic component 7 provided on the same plane 7 Short-circuit prevention wall 8 Electronic component 9 provided on a different plane Flexible wiring board 10 Secondary battery connection terminal 10a Secondary battery anode connection piece 10b Secondary battery cathode connection piece 11 Frame body positioning boss 12 Magnetic flux shielding member positioning boss 13 Secondary coil positioning boss 14 Secondary battery mounting portion 15 Flexible wiring board connector 16 Display panel 17 Secondary coil connection Terminal 18 Electronic device case 19 Cradle 20 Primary coil 21 Battery charger electronic component 22 Power supply connector 23 Power cable 24 Primary coil connection terminal 25 Battery charger circuit board 26 Core 27 Primary coil positioning hole 28 Battery charger circuit board positioning pin 29 Secondary coil connection Terminal through hole 30 Secondary coil connection through hole 31 Secondary battery Pole connection pattern 33 Secondary battery cathode connection pattern 34 Secondary coil positioning hole 35 Magnetic flux shielding member positioning hole 36 Frame body positioning hole 37 Wood screw 50 Watch case 51 Movement 52 Magnetic shield plate 53 Secondary coil 54 Charger 55 Charger circuit 56 Primary coil

Claims (4)

Magnetic flux shielding means for shielding a secondary coil that generates current by electromagnetic induction from the primary coil, a secondary battery that stores the current as electric power, a circuit board, and magnetic flux generated by the primary coil and the secondary coil And having
The secondary coil and the secondary battery are arranged in a plane within the plane range of the circuit board,
The magnetic flux shielding means is provided on the circuit board side of the secondary coil,
An electronic device comprising an electronic component provided between the magnetic flux shielding means and the circuit board. A frame for fixing the secondary coil, the secondary battery, the circuit board, and the magnetic flux shielding means;
The frame includes a secondary coil mounting portion for positioning and fixing the secondary coil, a secondary battery mounting portion for positioning and fixing the secondary battery, and a circuit board for positioning and fixing the circuit board. 2. The electronic apparatus according to claim 1, wherein the mounting portion and the magnetic flux shielding means mounting portion for positioning and fixing the vertical direction and the horizontal direction of the magnetic flux shielding means are integrally formed.   The electronic device according to claim 1, wherein the frame includes a short-circuit prevention unit that is provided between the electronic component and the secondary battery and prevents an electrical short circuit.   4. The electronic apparatus according to claim 1, wherein the magnetic flux shielding means is formed integrally with a core of the secondary coil and is made of a magnetic material.

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