JP2014079053A - Relay and non-contact charging device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay capable of expanding a range which a charged object is efficiently charged, and to provide a non-contact charging device including the relay.SOLUTION: A relay 6 is disposed between a device body 5 and a portable terminal 7 which are installed in an installation recessed part 3 of a center console 2 so as to be housed therein. The relay 6 includes: a relay case 21 having a surface 21b on which the portable terminal 7 is placed; and a relay coil Lc provided in the relay case 21.

Description

  The present invention relates to a repeater and a non-contact charging device including the same.

  Conventionally, there is a non-contact charging system that charges a charged device by performing non-contact power transmission from the non-contact charging device to the charged device mounted on the mounting surface (for example, Patent Documents 1 and 2). ). Specifically, the non-contact charging device is provided with a primary coil, and the charged device is provided with a secondary coil. Then, when the primary coil is excited and radio waves (electromagnetic waves) are emitted, electric power is induced in the secondary coil, and the secondary battery built in the device to be charged is charged.

JP 2008-5573 A JP 2010-259172 A

  By the way, inside the non-contact charging device, a control circuit for performing control related to charging such as polling for detecting whether or not the device to be charged is placed on the placement surface is provided. Therefore, a space for arranging components other than the primary coil is required inside the non-contact charging device, and the number and size of the primary coils that can be arranged are limited. As a result, on the placement surface, there is a position where the electromagnetic wave is weak away from the primary coil, and when the charged device (secondary coil) is arranged at the same position, the charged device is efficiently charged. There was a problem that it could not be done.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a repeater capable of extending the range in which a charged device can be efficiently charged and a non-contact charging provided with the same. To provide an apparatus.

  In order to solve the above-mentioned problem, an AC current is supplied to a primary coil to be used for a non-contact charging device that transmits power to a charged device provided with a secondary coil in a non-contact manner. A relay device disposed between the device main body and the device to be charged includes a case having a mounting surface on which the device to be charged is mounted, and a relay coil provided inside the case. This is the summary.

  Further, in order to solve the above-described problem, a non-contact charging device that transmits power in a non-contact manner to a charged device provided with a secondary coil by supplying an alternating current to the primary coil is provided with the primary coil. A relay device disposed between the device main body and the device to be charged, and the relay device is provided in a case having a mounting surface on which the device to be charged is mounted, and in the case The gist is to have a relay coil.

  According to each said structure, a relay coil induces an electric current with the electromagnetic waves emitted from a primary coil, and discharges electromagnetic waves. Therefore, the electromagnetic wave emitted from the primary coil and the electromagnetic wave emitted from the relay coil exist on the mounting surface of the relay case (relay device). Thereby, for example, even at a position where the electromagnetic wave emitted from the primary coil is weak, it is possible to ensure the strength of the electromagnetic wave at the same position by the electromagnetic wave emitted from the relay coil. Therefore, the device to be charged can be efficiently charged even at a position away from the primary coil on the placement surface. That is, it is possible to expand the range in which the charged device can be efficiently charged.

In the non-contact charging apparatus, it is preferable that the apparatus main body and the repeater are installed in a manner in which the apparatus main body and the repeater are accommodated in an installation recess provided in the installation target.
When the non-contact charging device is installed in such a manner that it is accommodated in the installation recess, the charged device can be moved only within the installation recess. Therefore, depending on the shape of the device to be charged, the position where the secondary coil is provided, etc., there is a possibility that the device to be charged cannot be arranged at a position close to the primary coil. Therefore, with respect to the configuration in which the non-contact charging device is installed in a mode of being accommodated in the installation recess, the effect of extending the range in which the charged device can be efficiently charged by providing the relay device is remarkable. Become.

In the non-contact charging apparatus, it is preferable that the apparatus main body has a connection terminal with an external power source that supplies an alternating current to the primary coil.
According to the said structure, compared with the case where a power supply is incorporated in an apparatus main body, a non-contact charging device can be reduced in size. Here, in the configuration in which the non-contact charging device is accommodated in the installation recess, the primary coil is arranged in the installation recess by moving the device body in the installation recess according to the shape of the device to be charged. It is conceivable to charge the charged device efficiently by bringing it close to the secondary coil of the charged device. However, in a configuration in which the connection terminal is provided in the apparatus main body, there is a possibility that an excessive load is applied to the connection terminal by moving the apparatus main body. Therefore, with respect to the configuration in which the device main body having the connection terminal is installed in a mode of being accommodated in the installation recess, the effect of extending the range in which the device to be charged can be efficiently charged by providing the repeater is particularly It will be remarkable.

In the non-contact charging apparatus, it is preferable that the repeater is formed to be slidable with respect to the apparatus main body.
According to the said structure, the range which can be charged efficiently can be easily changed by sliding a case. Therefore, even if you do not prepare multiple types of repeaters with different relay coil positions, you can efficiently charge multiple types of charged devices with different shapes, positions where secondary coils are provided, etc. with one repeater can do.

  ADVANTAGE OF THE INVENTION According to this invention, the range which can charge a to-be-charged apparatus efficiently can be expanded.

The perspective view of the non-contact charging device installed in the installation recessed part of a center console, and a portable terminal. The top view of the non-contact charging device provided in the installation recessed part of the center console, and a portable terminal. AA sectional drawing of FIG. The block diagram of a non-contact charging device and a portable terminal. Operation | movement explanatory drawing which shows a mode that another portable terminal is charged with a non-contact charging device.

Hereinafter, an embodiment of a repeater and a non-contact charging device including the same will be described with reference to the drawings.
As shown in FIG. 1, the non-contact charging device 1 is installed in a mode of being accommodated in an installation recess 3 of a center console 2 as an installation object provided in a vehicle interior. As shown in FIGS. 2 and 3, the non-contact charging device 1 includes a device main body 5 and a repeater 6, and can charge a portable terminal 7 as a charged device possessed by a user in a non-contact manner. It is configured.

  Specifically, the installation recess 3 is formed in a hole shape having a rectangular opening. On the inner peripheral surface 3 a of the installation recess 3, an insertion groove 8 extending over the entire circumference is formed at a position closer to the opening side than the bottom surface 3 b of the installation recess 3.

  The apparatus main body 5 includes a main body case 11 and a plurality of primary coils L <b> 1 provided inside the main body case 11. The main body case 11 is formed in a rectangular box shape having substantially the same size as the opening shape of the installation recess 3. The main body case 11 is fixed so that the back surface 11 a contacts the bottom surface 3 b of the installation recess 3. Each primary coil L1 is formed of a spiral coil, and is provided inside the main body case 11 so that each axis is substantially orthogonal to the surface 11b of the main body case 11. In the present embodiment, the primary coils L1 are collectively arranged at one place. In FIG. 2 and FIG. 3, for convenience of explanation, a plurality of primary coils L1 are schematically shown as one aggregate. Yes.

  The repeater 6 includes a relay case 21 and a plurality of relay coils Lc provided inside the relay case 21. The relay case 21 is formed in a rectangular box shape that is larger than the opening shape of the installation recess 3 (main body case 11) and smaller than the rectangle formed by the bottom surface of the insertion groove 8. And the relay case 21 is accommodated in the installation recessed part 3 so that the peripheral part may be inserted in the insertion groove 8, and the back surface 21a may contact the surface 11b of the main body case 11. FIG. Thereby, the relay case 21 (relay device 6) is slidable parallel to the surface 11b with respect to the main body case 11 (device main body 5). In addition, on the surface 21b of the relay case 21, a knob 22 for a user to grip when sliding the relay case 21 is closer to one short side (left side in FIGS. 2 and 3) of the relay case 21. Formed in position. The portable terminal 7 is placed on the surface 21 b of the relay case 21. That is, the surface 21b of the relay case 21 corresponds to the placement surface. Each secondary coil L2 is formed of a spiral coil, and is provided inside the relay case 21 so that each axis is substantially orthogonal to the back surface 21a and the front surface 21b of the relay case 21. In the present embodiment, the relay coils Lc are arranged in one place, and in FIG. 2 and FIG. 3, the relay coils Lc are schematically shown as one aggregate for convenience of explanation.

  On the other hand, the mobile terminal 7 includes a mobile case 31 and a secondary coil L <b> 2 provided inside the mobile case 31. The mobile case 31 is formed in a rectangular box shape smaller than the opening shape of the installation recess 3 (main body case 11). In addition, the longitudinal direction length of the mobile case 31 of the present embodiment is set to be longer than the width of the installation recess 3 in the short direction. Thereby, the attitude | position which can accommodate the portable terminal 7 in the installation recessed part 3 is restrict | limited, In the attitude | position in which the display display 32 faces upwards, the portable terminal 7 so that the secondary coil L2 may oppose the primary coil L1. Cannot be arranged in the installation recess 3.

Next, the electrical configurations of the non-contact charging device and the mobile terminal will be described.
As shown in FIG. 4, the apparatus main body 5 includes the primary coil L <b> 1, the same number of excitation circuits 12, a control circuit 13, and a connection terminal 14. Each primary coil L1 is connected to a corresponding excitation circuit 12. Each excitation circuit 12 is connected to an external power source B provided outside the non-contact charging device 1 via a connection terminal 14. Then, the control circuit 13 supplies an alternating current from the external power source B to the primary coil L1 through the excitation circuit 12. Thereby, the primary coil L1 is excited and emits radio waves (electromagnetic waves).

  The repeater 6 includes the relay coil Lc and the same number of capacitors C. Each relay coil Lc and each capacitor C are connected in parallel. Thereby, the resonance frequency of the relay coil Lc is adjusted.

  The portable terminal 7 includes the secondary coil L2, the rectifier circuit 33, the converter 34, a battery (secondary battery) 35, and a load modulation circuit 36. The rectifier circuit 33 converts the alternating current induced in the secondary coil L2 by the electromagnetic wave emitted from the primary coil L1 or the relay coil Lc into a direct current, and outputs the converted current to the converter 34. Converter 34 steps down or boosts the power, supplies the power to battery 35, and charges battery 35.

Next, charging (action) of the mobile terminal by the non-contact charging device of the present embodiment will be described.
When the mobile terminal 7 is placed on the surface (mounting surface) 21b of the relay case 21 and the primary coil L1 is excited, the relay coil Lc induces a current by electromagnetic waves emitted from the primary coil L1. Release electromagnetic waves (electromagnetic induction). That is, the electromagnetic wave emitted from the primary coil L1 and the electromagnetic wave emitted from the relay coil Lc exist on the surface 21b. And the electromagnetic wave emitted from the primary coil L1 becomes strong at the position facing the primary coil L1 on the surface 21b, and when the secondary coil L2 of the portable terminal 7 is placed at the same position, it is efficient. Charging becomes possible. Similarly, the electromagnetic wave emitted from the relay coil Lc becomes strong at a position facing the relay coil Lc, and when the secondary coil L2 of the mobile terminal 7 is placed at the same position, efficient charging becomes possible. Become. Therefore, by providing the repeater 6, the range in which the mobile terminal 7 can be efficiently charged is expanded compared to the case where the mobile terminal 7 is directly placed on the surface 11b of the apparatus body 5. Therefore, for example, as shown in FIG. 2, the mobile terminal 7 is relatively large with respect to the installation recess 3, and the mobile terminal 7 cannot be placed in the installation recess 3 so that the secondary coil L2 faces the primary coil L1. Even in this case, the mobile terminal 7 can be efficiently charged by the electromagnetic waves emitted from the relay coil Lc.

  Further, the position of the relay coil Lc in the installation recess 3 (on the surface 11 b of the apparatus main body 5) is changed by the user holding the knob 22 and sliding the repeater 6 with respect to the apparatus main body 5. Thereby, as shown in FIG. 5, even if it is portable terminal 7 'from which the shape of the portable case 31 and the position where the secondary coil L2 is arrange | positioned differ, the repeater 6 is slid according to this portable terminal 7'. Thus, the relay coil Lc faces the secondary coil L2, and efficient charging becomes possible.

  Note that the contactless charging apparatus 1 performs polling to determine whether or not the mobile terminal 7 is installed on the surface 21b of the relay case 21 (relay device 6) prior to starting charging of the mobile terminal 7. I do. Specifically, the control circuit 13 excites the primary coil L1 by intermittently supplying an alternating current to the primary coil L1. As a result, a polling signal (radio wave) is transmitted from the primary coil L1.

  The load modulation circuit 36 of the portable terminal 7 performs load modulation when receiving a polling signal from the primary coil L1 through the secondary coil L2 or through the relay coil Lc and the secondary coil L2. Specifically, when receiving a polling signal, the load modulation circuit 36 switches between a connection state in which a load (not shown) is connected to the secondary coil L2 and a non-connection state in which no load is connected to the secondary coil L2. . When in this connected state, the impedance viewed from the primary coil L1 that is magnetically coupled to the secondary coil L2 increases more than in the non-connected state, so that the current supplied to the primary coil L1 changes. Then, the control circuit 13 determines whether or not the mobile terminal 7 is placed on the surface 21b of the relay case 21 through this change in current, and if it is determined that the mobile terminal 7 is placed, the control circuit 13 continuously The primary coil L1 is excited to charge the mobile terminal 7 as described above.

Next, the effect of this embodiment will be described.
(1) Since the repeater 6 having the relay coil Lc is arranged between the apparatus body 5 and the portable terminal 7, the electromagnetic wave emitted from the primary coil L1 and the electromagnetic wave emitted from the relay coil Lc It exists on the surface 21b, respectively, and the range that can be efficiently charged as described above can be expanded.

  In particular, when the non-contact charging device 1 is installed in a manner of being accommodated in the installation recess 3 as in the present embodiment, the portable terminal 7 can be moved only within the installation recess 3. Therefore, depending on the shape of the mobile terminal 7, the position where the secondary coil is provided, etc., there is a possibility that the mobile terminal 7 cannot be disposed at a position close to the primary coil L1. Here, the primary coil L1 is brought close to the secondary coil L2 of the mobile terminal 7 disposed in the installation recess 3 by moving the apparatus body 5 in the installation recess 3 in accordance with the shape of the mobile terminal 7 and the like. It is conceivable to charge the mobile terminal 7 efficiently. However, in this case, there is a possibility that an excessive load is applied to the connection terminal 14 by moving the apparatus body 5. Therefore, the mobile terminal 7 is efficiently charged by providing the repeater 6 with respect to the configuration in which the apparatus main body 5 having the connection terminals 14 is installed in a manner of being accommodated in the installation recess 3 as in the present embodiment. The effect of extending the possible range is particularly noticeable.

  (2) Since the connection terminal 14 is provided on the apparatus main body 5 and an alternating current is supplied from the external power supply B to the primary coil L1, the non-contact charging apparatus 1 is smaller than the case where the apparatus main body 5 has a built-in power supply. Can be

  (3) Since the relay case 21 is formed to be slidable with respect to the apparatus main body 5, the range in which charging can be efficiently performed can be easily changed by sliding the relay case 21. Therefore, even if a plurality of types of repeaters 6 having different positions of the relay coil Lc are not prepared, a plurality of types of portable terminals 7 having different shapes, positions where the secondary coils L2 are provided, etc., in a single repeater 6, 7 'can be charged efficiently.

In addition, the said embodiment can also be implemented in the following aspects which changed this suitably.
In the above embodiment, the relay case 21 is formed so as to be slidable with respect to the main body case 11. However, the present invention is not limited thereto, and the relay case 21 may be formed to be fixed to the main body case 11. In this case, by preparing a plurality of types of repeaters 6 in which the relay coils Lc are arranged according to the shape of the mobile terminal 7 and the position of the secondary coil L2, the mobile terminals 7 having different shapes and the like are efficiently charged. can do. Needless to say, the relay coil Lc is provided inside the relay case 21 so as not to face the primary coil L1.

  In the above embodiment, the plurality of relay coils Lc are arranged at one place. However, the present invention is not limited to this. For example, the relay coils 21 may be arranged evenly inside the relay case 21 or arranged at a plurality of places. The arrangement mode is not limited. Similarly, a plurality of primary coils L1 may be collectively arranged at a plurality of locations inside the main body case 11, and the arrangement mode is not limited.

In the above embodiment, the connection terminal 14 to the external power source B is provided in the apparatus main body 5. However, the present invention is not limited to this, and for example, a primary battery (dry battery or the like) may be incorporated in the apparatus main body 5.
In the above embodiment, the contactless charging device 1 is an electromagnetic induction type, but may be a magnetic resonance type.

In each of the above embodiments, the device to be charged is not limited to the portable terminal 7 and may be a portable music player, a digital camera, or the like.
-In above-mentioned embodiment, although the non-contact charging device 1 was installed in the center console 2, you may install not only in this but in other installation objects, such as an instrument panel, for example.

  -In above-mentioned embodiment, although this invention was applied to the repeater 6 used for the non-contact charging device 1 installed in the aspect accommodated in the installation recessed part 3, it is not restricted to this, The installation object of the center console 2 grade | etc., You may apply to the repeater 6 used for the non-contact charging device installed in the aspect which protrudes from the surface of this.

  DESCRIPTION OF SYMBOLS 1 ... Non-contact charging device, 2 ... Center console, 3 ... Installation recessed part, 5 ... Apparatus main body, 6 ... Repeater, 7 ... Portable terminal, 11 ... Main body case, 11a, 21a ... Back surface, 11b, 21b ... Front surface, 14 Connection terminal, 21 ... Relay case, 31 ... Mobile case, B ... External power supply, L1 ... Primary coil, L2 ... Secondary coil, Lc ... Relay coil.

Claims (5)

Used in a non-contact charging device that transmits power to a charged device provided with a secondary coil by supplying an alternating current to the primary coil, and the device main body provided with the primary coil and the charged In the repeater placed between the device,
A case having a mounting surface on which the charged device is mounted;
And a relay coil provided inside the case. In a non-contact charging device that transmits power in a non-contact manner to a charged device provided with a secondary coil by supplying an alternating current to the primary coil,
Comprising a repeater disposed between the device main body provided with the primary coil and the device to be charged;
The non-contact charging apparatus, wherein the relay includes a case having a mounting surface on which the charged device is mounted, and a relay coil provided inside the case. In the non-contact charging device according to claim 2,
The non-contact charging apparatus, wherein the apparatus main body and the repeater are installed in a manner of being accommodated in an installation recess provided in the installation target with respect to the installation target. In the non-contact charging device according to claim 2 or 3,
The said apparatus main body has a connection terminal with the external power supply which supplies an alternating current to the said primary coil, The non-contact charging device characterized by the above-mentioned. In the non-contact charging device according to any one of claims 2 to 4,
The non-contact charging apparatus, wherein the repeater is formed to be slidable with respect to the apparatus main body.