JP2007104868A - VEHICLE CHARGING DEVICE, ELECTRIC DEVICE AND VEHICLE NON-CONTACT CHARGE SYSTEM - Google Patents

Abstract

Heat generation of a metal object is prevented when an object mounted on a mounting part is a non-charge target metal object whose voltage is induced by magnetic flux or an electric device including the metal object.
In a mobile phone to be charged, a power receiving coil and a power storage unit of the mobile phone are charged by power received via the power receiving coil, and a signal having a constant waveform is received via the power receiving coil during power reception. A power receiving side circuit equipped with a DC-DC conversion / signal transmission unit is installed. On the other hand, a charging side coil is wound around the bottom of the cup holder in the passenger compartment so as to surround the cup holder, and the charging side coil is connected to the charging side circuit. The waveform determination unit of the charging side circuit starts a supply of charging power to the charging coil, and when a signal having a constant waveform is received within a predetermined time, a process of continuing the power supply to the charging coil at a constant cycle Repeat with.
[Selection] Figure 4

Description

  The present invention relates to a charging device for a vehicle, an electric device, and a non-contact charging system for a vehicle, and in particular, a charging device for a vehicle for charging an electric device mounted on a mounting portion in a vehicle compartment, and the charging device for the vehicle And a vehicle non-contact charging system including the vehicle charging device and the electrical device.

  Since portable electric devices such as mobile phones and PDAs (Personal Digital Assistants) operate using a built-in secondary battery (storage battery) as a power source, it is necessary to periodically charge the storage battery. When charging this type of electrical equipment in the vehicle interior, it is connected to the electrical equipment via a connector, and the power supplied from a power terminal such as a cigar socket in the vehicle interior is converted into electrical power for charging. It is common to use a charger configured to supply to the device. However, when this type of charger is used, since it is necessary to electrically connect the charger to the electric device and the power supply terminal, the operation is complicated, and charging is performed by G applied to the electric device while the vehicle is running. There exists a problem that there exists a possibility of causing trouble in driving | operation operation because an electric equipment moves.

In relation to the above, Patent Document 1 includes a loop-shaped primary coil wound around the inner peripheral wall of a box made of a magnetic material in which an electric appliance main body can be inserted and removed freely. The charging circuit causes the primary current to flow through the primary coil with respect to the electric appliance main body housed in the box body provided with a charging unit for charging the storage battery with the secondary coil and the output of the secondary coil. A non-contact charging device configured to supply charging power with magnetic flux generated in the primary coil is disclosed.
JP-A-4-317527

  The technology described in Patent Document 1 can be charged simply by putting the electric device into the box of the charging device, and there is no need to perform an operation for electrically connecting the charger to the electric device and the power supply terminal. Therefore, the complexity of operation can be eliminated. In addition, when the technique described in Patent Document 1 is applied to charging in the passenger compartment, even if G is added to the electric device while the vehicle is running, the electric device being charged does not deviate from the outside of the box. This can also prevent troubles in driving operation.

  However, in the technique described in Patent Document 1, for example, a single metal object formed by bending a metal wire rod into a loop shape, such as a paper clip, or another type of metal object (for example, a coil) incorporated therein. Even if the electric device is put in the box, it generates magnetic flux in the primary coil without distinguishing these metal objects or other electric devices from the electric device to be charged. There is a problem that a voltage is induced in a metal object or a metal object incorporated in another electric device to generate heat, and there is room for improvement.

  The present invention has been made in consideration of the above facts, and the object placed on the placement unit is a metal object whose voltage is induced by magnetic flux in a non-charge target or an electric device including the metal object Another object of the present invention is to provide a vehicle charging device, an electric device, and a vehicle non-contact charging system capable of preventing the metal object from generating heat.

  In order to achieve the above object, a vehicle charging device according to the first aspect of the present invention includes a power receiving side coil, charging means for charging a power storage unit with charging power supplied through the power receiving side coil, and A charging-side coil provided in the vicinity of the mounting portion in the vehicle interior for mounting an electric device having a transmitting means for transmitting a predetermined signal via the power-receiving-side coil; Only when the predetermined signal is received via the charging coil from the power supply means for supplying the electric power for charging via the charging coil to the electric device and the electric device placed on the mounting portion And a power supply control means for controlling the power supply means so that charging electric power is supplied to the electric device that is the source of the predetermined signal via the charging coil.

  In the first aspect of the invention, the power receiving side coil, charging means for charging the power storage unit with the charging power supplied via the power receiving side coil, and transmission means for transmitting a predetermined signal via the power receiving side coil are provided. An electric device provided is to be charged, and a mounting portion for mounting the electric device is provided in the vehicle interior, and a charging coil is provided in the vicinity of the mounting portion. According to the first aspect of the present invention, there is provided power supply means for supplying electric power for charging to the electrical equipment mounted on the mounting portion via the charging side coil, and the power supply control means is provided on the mounting portion. Only when a predetermined signal is received from the mounted electric device via the charging coil, the electric power feeding means is configured so that the electric power for charging is supplied to the electric device that is the source of the predetermined signal via the charging coil. To control.

  In this way, in the invention described in claim 1, a metal object that is not an object to be charged or an electric device incorporating the metal object, that is, a metal object that does not transmit a predetermined signal or an electric device that incorporates the metal object is placed on the mounting portion. Since the supply of charging power through the charging side coil by the power supply means is stopped based on the fact that the predetermined signal is not received through the charging side coil when mounted, the mounting unit is mounted on the mounting unit. When the applied object is a non-chargeable metal object whose voltage is induced by magnetic flux or an electric device including the metal object, the metal object can be prevented from generating heat.

  In the first aspect of the present invention, the mounting portion is a concave-shaped portion having a size capable of accommodating the electric device so that movement of the electric device due to G applied to the electric device during traveling of the vehicle can be prevented. However, when the mounting portion is formed in a concave shape as described above, the charging side coil may be wound so as to surround the mounting portion, for example, as described in claim 2. preferable. Thereby, irrespective of the position of the electrical device to be charged in the placement unit, non-contact charging to the electrical device to be charged via the charging side coil can be performed with high efficiency and stability.

  According to the first aspect of the present invention, the electric device to be charged is mounted based on whether or not a predetermined signal is received from the electric device mounted on the mounting portion via the charging side coil. It is possible to determine whether or not the vehicle is mounted on the mounting unit, and this is used, for example, as described in claim 3, when the vehicle ignition switch is turned off, the vehicle is mounted on the mounting unit. An informing means for informing when a predetermined signal has been received from the electrical device via the charging coil may be further provided. Thereby, it is possible to prevent the electric device to be charged from being left in the vehicle compartment while being placed on the placement portion.

  An electric device according to a fourth aspect of the present invention is an electric device that can be mounted on a mounting portion provided in the vicinity of the charging coil of the vehicle charging device according to any one of the first to third aspects. And a power receiving side coil, a charging means for charging the power storage unit with charging power supplied via the power receiving side coil, and a transmitting means for transmitting a predetermined signal via the power receiving side coil. It is characterized by that.

  An electric device according to a fourth aspect of the present invention includes the power receiving side coil, a charging unit, and a transmitting unit, and the charging coil of the vehicle charging device according to any one of the first to third aspects is located nearby. Since the vehicle charging device is charged by being placed on the provided placement portion, the object placed on the placement portion is a non-chargeable object as in the first aspect of the invention. In the case of a metal object whose voltage is induced by magnetic flux or an electric device including the metal object, the metal object can be prevented from generating heat. In addition, although any electric device can be applied as the electric device according to the invention described in claim 4, specifically, for example, a mobile phone, a PDA, a portable music player, other portable electric devices, etc. Is preferred.

  Since the vehicle non-contact charging system according to claim 5 includes the vehicle charging device according to any one of claims 1 to 3 and the electric device according to claim 4. As in the invention described in claim 1 and claim 4, the object placed on the placing portion is a non-chargeable metal object whose voltage is induced by a magnetic flux or an electric device including the metal object In this case, the metal material can be prevented from generating heat.

  As described above, according to the present invention, only when a predetermined signal is received from the electric device mounted on the mounting portion via the charging side coil, the charging side coil is connected to the electric device that is the source of the predetermined signal. Since the charging power is controlled to be supplied through the object, the object placed on the placement unit is a non-charge target metal object whose voltage is induced by magnetic flux or an electric device including the metal object. Furthermore, it has an excellent effect that the metal material can be prevented from generating heat.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an electric equipment charging system 10 according to the present embodiment. The electric device charging system 10 includes a charging side circuit 12 attached to a vehicle that charges an electric device, and a power receiving side circuit 16 built in a mobile phone 14 (see FIG. 3) charged by the charging side circuit 12. Has been. The charging side circuit 12 corresponds to the vehicle charging device according to the present invention, the mobile phone 14 with the power receiving side circuit 16 attached thereto corresponds to the electric device according to the present invention, and the electric device charging system 10 is claimed in claim 5. It corresponds to the non-contact charging system for vehicles described in 1. In the following description, the cellular phone 14 shown in FIG. 3 will be described as an example of the electrical device according to the present invention. However, the electrical device according to the present invention is not limited to the cellular phone 14, but a PDA, a portable music player, Other portable electric devices can be applied.

  The charging side circuit 12 includes a regulator 22 connected to a plus terminal of a battery 20 of the vehicle. The regulator 22 includes an AC voltage generation / waveform separation unit 24 and a waveform determination unit configured to include a microprocessor. 26 are connected to each other. When the waveform determination unit 26 is instructed to start power supply, the regulator 22 converts the power supplied from the battery 20 into a constant voltage DC power and supplies it to the AC voltage generation / waveform separation unit 24. When the power supply stop is instructed from, the supply of power to the AC voltage generation / waveform separation unit 24 is stopped. A capacitor 28, a charging coil 30 and a resistor 32 are connected in series to the AC voltage generator / waveform separator 24. The AC voltage generator / waveform separator 24 is supplied when DC power is supplied from the regulator 22. The direct current power is converted into a constant voltage alternating current power for charging the mobile phone 14 via the charging side coil 30 and supplied to a circuit including the capacitor 28, the charging side coil 30 and the resistor 32.

  The regulator 22 and the AC voltage generation / waveform separation unit 24 correspond to the power supply unit according to the present invention together with other circuit elements (capacitor 28 and resistor 32) constituting the charging side circuit 12, and the waveform determination unit. Reference numeral 26 corresponds to the power supply control means according to the present invention and the notification means according to claim 3.

  As shown in FIG. 2, the console box 54 is provided between the driver seat 50 and the passenger seat 52 in the vehicle to which the charging side circuit 12 is attached. Near the front end of the console box 54 in the vehicle front-rear direction, two cup holders 56, 58 for the front seat (driver seat 50 and passenger seat 52) are provided along the vehicle front-rear direction. The front cup holder 56 is closed and accommodated by a rotating lid 60 when not in use (see FIG. 2), and is exposed and usable by rotating the rotating lid 60 in the direction of arrow A in FIG. . Further, the rear cup holder 58 is closed and housed by the slide lid 62 when not in use (see FIG. 2), and is exposed and usable by sliding the slide lid 62 to the vehicle rear side. In this embodiment, the rear cup holder 58 also has a function as a mounting portion according to the present invention, and the charging side coil 30 of the charging side circuit 12 is connected to the rear cup as shown by a broken line in FIG. It is wound around the bottom of the holder 58 so as to surround the cup holder 58.

  On the other hand, as shown in FIG. 1, the power receiving side circuit 16 includes a power receiving side coil 34, one end of the power receiving side coil 34 is connected to the anode of the diode 36, the cathode of the diode 36 is one end of the capacitor 38, and a Zener diode. 40 cathodes and DC-DC converter / signal transmitter 42 are connected to each other. The other end of the power receiving coil 34 is connected to the other end of the capacitor 38, the anode of the Zener diode 40, and the DC-DC conversion / signal transmission unit 42. The DC-DC conversion / signal transmission unit 42 is connected to the diode 44. Is connected to the positive terminal of the storage battery 46 of the mobile phone 14 and is also connected to the negative terminal of the storage battery 46. The power receiving side coil 34 is disposed near one end in the longitudinal direction of the mobile phone 14 (the end on the side where the power supply terminal etc. are provided (hereinafter, the power receiving side coil 34 of the mobile phone 14 is arranged). The end on the side where it is installed is called the “bottom”).

  When power is supplied from the power receiving side coil 34 by electromagnetic induction of the charging side coil 30 and the power receiving side coil 34, the DC-DC conversion / signal transmission unit 42 is a predetermined for charging the storage battery 46 with the supplied power. The storage battery 46 is charged by converting the voltage into DC power and supplying the storage battery 46 via the diode 44. Further, the DC-DC conversion / signal transmission unit 42 receives a signal having a predetermined waveform (for example, after the low level continues for a first predetermined time period, after the power is supplied from the power receiving side coil 34 side, The signal having a constant waveform for a predetermined period of time) is generated, and the signal having the constant waveform is superimposed on the current flowing through the power receiving coil 34 to transmit the signal having the constant waveform to the charging side circuit 12. Thus, the DC-DC conversion / signal transmission unit 42 corresponds to the charging means according to the present invention, together with other circuit elements (diode 36, capacitor 38, Zener diode 40, and diode 44) constituting the power receiving side circuit 16. Furthermore, it also has a function as a transmission means according to the present invention.

  The AC voltage generation / waveform separation unit 24 of the charging side circuit 12 separates a component corresponding to the signal received by the charging side coil 30 from the current flowing through the charging side coil 30, and the separated component (reception signal) is a waveform determination unit. 26. The waveform determination unit 26 determines whether or not the waveform of the reception signal input from the AC voltage generation / waveform separation unit 24 matches a predetermined waveform, and the power supply by the regulator 22 is performed according to the determination result. Turn on / off (start / stop).

  Next, as an operation of the present embodiment, firstly, while the ignition switch of the vehicle is on, the electrical equipment monitoring process executed by the waveform determination unit 26 at a constant cycle T (for example, a cycle of about several seconds to several tens of seconds) This will be described with reference to the flowchart of FIG. In step 70, the regulator 22 is instructed to start power feeding. When the waveform determination unit 26 instructs the start of power supply, the regulator 22 supplies a constant voltage of DC power to the AC voltage generation / waveform separation unit 24, and the AC voltage generation / waveform separation unit 24 is supplied from the regulator 22. The direct current power is converted into a constant voltage alternating current power for charging the mobile phone 14 via the charging side coil 30 and supplied to a circuit including the capacitor 28, the charging side coil 30 and the resistor 32. As a result, a magnetic flux for charging the mobile phone 14 is generated in the charging side coil 30.

  In the next step 72, it is determined whether or not the charging side coil 30 has received any signal from the outside based on whether or not a reception signal is input from the AC voltage generation / waveform separation unit 24. If the determination is negative, the routine proceeds to step 74, where it is determined whether or not a predetermined time t (where t << T) has elapsed since the regulator 22 was instructed to start power feeding. If the determination in step 74 is also negative, the process returns to step 72, and steps 72 and 74 are repeated until either determination is positive. If the received signal is not input before the predetermined time t elapses, the determination in step 74 is affirmed and the routine proceeds to step 76 where the regulator 22 is instructed to stop power supply to monitor the electric equipment. Exit. As the supply of power from the regulator 22 to the AC voltage generation / waveform separation unit 24 is stopped, the generation of magnetic flux in the charging side coil 30 is also stopped.

  If the determination in step 72 is affirmative, the routine proceeds to step 78, where it is determined whether or not the waveform of the received signal input from the AC voltage generation / waveform separation unit 24 matches a predetermined constant waveform. judge. If the determination is negative, the process proceeds to step 74 and returns to the loop of steps 72 and 74. Therefore, even if the charging coil 30 receives some signal from the outside, but the waveform of the received signal is different from a predetermined waveform, the AC voltage generation / waveform from the regulator 22 after a predetermined time t has elapsed. The supply of power to the separation unit 24 is stopped, and the generation of magnetic flux in the charging side coil 30 is also stopped.

  As described above, when the cup holder 58 is empty, or when an object other than the mobile phone 14 is contained in the cup holder 58, the charging side coil 30 does not receive a signal from the outside, so that the predetermined time t After the elapse of time, the supply of power by the regulator 22 is stopped, and the state in which the supply of power by the regulator 22 is stopped is continued until the next electrical equipment monitoring process is executed. Even if the object is a metal object whose voltage is induced by magnetic flux (for example, a metal object formed by bending a metal wire like a paper clip or the like in a loop) or an electric device including the metal object In addition, it is possible to prevent a voltage from being induced in the metal object and to generate heat, and to reduce the power consumption of the charging side circuit 12.

  In addition, even if the charge-side coil 30 receives any signal from the outside due to the influence of noise or the like when the cup holder 58 is empty or an object other than the mobile phone 14 is contained in the cup holder 58, it has been received. Since it is unlikely that the waveform of the signal matches a predetermined constant waveform, the supply of power by the regulator 22 is stopped after the lapse of the predetermined time t, and the electrical device monitoring process is executed next time, as described above. During this time, the state where the supply of power by the regulator 22 is stopped is continued. Therefore, when the mobile phone 14 to be charged is not in the cup holder 58, it is possible to reliably prevent the magnetic flux from being generated unnecessarily by the charging side coil 30.

  On the other hand, when it is desired to charge the mobile phone 14 while the vehicle is running, the vehicle occupant slides the slide lid 62 to the rear side of the vehicle to expose the cup holder 58, and then the bottom of the mobile phone 14 is lowered. The mobile phone 14 is put into the cup holder 58 in the direction as follows. Since the cup holder 58 has a concave shape, specifically, a shape in which a wall surface having a predetermined height is provided around the entire circumference of the flat bottom surface, the mobile phone placed in the cup holder as the vehicle travels. Even if G is added to the telephone set 14, the mobile telephone set 14 is prevented from dropping out of the cup holder 58.

  As described above, when the mobile phone 14 to be charged is placed in the cup holder 58, the DC-DC conversion / signal transmission unit 42 from the power receiving side coil 34 by electromagnetic induction of the charging side coil 30 and the power receiving side coil 34. Therefore, the DC-DC converter / signal transmitter 42 charges the storage battery 46 of the mobile phone 14 and generates a signal having a predetermined constant waveform. A signal having a constant waveform is transmitted to the charging side circuit 12 through the power receiving side coil 34 by superimposing the current on the current flowing through the power receiving side 34. A signal having a constant waveform transmitted via the power receiving side coil 34 is received by the charging side coil 30 of the charging side circuit 12 and input to the waveform determining unit 26 via the AC voltage generating / waveform separating unit 24.

  In this case, since the determination in step 78 is affirmed, the electrical device monitoring process is terminated without performing any process (without stopping the supply of power by the regulator 22 in step 76). As a result, until the next electric equipment monitoring process is executed, the generation of magnetic flux in the charging side coil 30, that is, the supply of power to the power receiving side circuit 16 is continued, and the storage battery 46 of the mobile phone 14 is charged. Will continue. Since the DC-DC conversion / signal transmission unit 42 of the power receiving side circuit 16 continues to transmit a signal having a constant waveform while power is supplied from the power receiving side coil 34, the mobile phone to be charged is placed in the cup holder 58. While 14 is on, charging of the storage battery 46 of the mobile phone 14 is continued by affirming the determination of step 78 every time the electric equipment monitoring process is executed.

  Next, an ignition-off interruption process executed by the waveform determination unit 26 when the ignition switch of the vehicle is turned off and executed by the waveform determination unit 26 will be described with reference to the flowchart of FIG. In step 80, a magnetic flux is generated in the charging side coil 30 by instructing the regulator 22 to start feeding, and in the next step 82, it is determined whether or not the charging side coil 30 has received any signal from the outside. When the determination is negative, the routine proceeds to step 84, where it is determined whether or not a predetermined time t (where t << T) has elapsed since the regulator 22 was instructed to start power feeding. If the determination in step 84 is also negative, the process returns to step 82, and steps 82 and 84 are repeated until either determination is positive. If the reception signal is not input before the predetermined time t elapses, the determination in step 84 is affirmed and the process proceeds to step 86, and the regulator 22 is instructed to stop power supply, thereby charging side coil. The generation of magnetic flux from 30 is stopped, and the interruption process at the time of ignition off is completed.

  If the determination at step 82 is affirmative, the routine proceeds to step 88, where it is determined whether or not the waveform of the received signal input from the AC voltage generation / waveform separation unit 24 matches a predetermined constant waveform. judge. When determination is denied, it transfers to step 84 and returns to the loop of steps 82 and 84. Therefore, even if the charging coil 30 receives some signal from the outside, but the waveform of the received signal is different from a predetermined waveform, the AC voltage generation / waveform from the regulator 22 after a predetermined time t has elapsed. The supply of power to the separation unit 24 is stopped, and the generation of magnetic flux from the charging side coil 30 is also stopped. As described above, in the ignition-off interruption process, when the charging side coil 30 does not receive a signal from the outside, and when the charging side coil 30 receives a signal having a waveform different from a predetermined constant waveform. The process is the same as the electrical equipment monitoring process described above.

  On the other hand, when the charging side coil 30 receives a signal having a predetermined waveform, it can be determined that the mobile phone 14 is in the cup holder 58. For this reason, when the determination in step 88 is affirmed, the process proceeds to step 90 to notify that the electric device (the mobile phone 14) is left behind in the cup holder 58. This notification may be performed, for example, by sounding a buzzer, a voice message for notifying misplacement may be reproduced, or a text message may be displayed on a display or the like. As a result, it is possible to prevent the vehicle occupant from leaving the mobile phone 14 in the cup holder 58 and getting off. If the process of step 90 is performed, it will transfer to step 86, generation | occurrence | production of the magnetic flux from the charge side coil 30 will be stopped by instruct | indicating the electric power supply stop with respect to the regulator 22, and the interruption process at the time of ignition off will be complete | finished.

  In the above description, the electric device monitoring process is executed at a constant period T while the vehicle ignition switch is on, and the ignition off interrupt process is executed when the vehicle ignition switch is turned off. However, the present invention is not limited to this. For example, a sensor or a switch for detecting the position of the slide lid 62 is provided, and the sensor or switch is connected to the waveform determination unit 26. Only when the slide lid 62 is located at the exposed position (when the electric device can be placed on the placement portion), the above-described electric device monitoring process and ignition-off interrupt process are executed. May be.

  Moreover, although the aspect which provided the charging side coil 30 only in the rear side cup holder 58 was demonstrated above, it is not limited to this, You may provide the charging side coil 30 in the front side cup holder 56. FIG. In addition, the number of cup holders functioning as the mounting portions according to the present invention is not limited to one per vehicle, and for example, the charging side coils 30 are provided in the front and rear cup holders 56 and 58, respectively. Alternatively, the charging side coil 30 may be provided in all the cup holders of one vehicle including the rear seat cup holder. When each charging side coil 30 is provided in a plurality of cup holders (mounting portions), the same number of charging side circuits 12 as the charging side coils 30 are provided, and each charging side circuit 12 is connected to each charging side coil 30. The plurality of cup holders (mounting portions) can be used to charge the electric device independently.

  Moreover, although the example which applied the cup holder as a mounting part which concerns on this invention was demonstrated above, the mounting part is the shape which can mount an electric equipment, Preferably the movement of the electric equipment during vehicle travel is blocked | prevented In this case, it is only necessary to have a concave shape, and in addition to the cup holder, for example, a concave portion such as an ashtray or other accessory case provided in the passenger compartment can be applied as the mounting portion.

  Then, the result of the experiment which this inventor implemented in order to search the optimal positional relationship of the charge side coil at the time of charge and a receiving side coil is demonstrated. In this experiment, as shown in FIG. 6 (A), a charging side coil having a height of 20 mm is placed on the outer periphery of a bottomed cylindrical case having an inner diameter of 72 mm (radius 36 mm), and the center position in the vertical direction of the charging side coil. The mobile phone is wound so that the height is 15 mm from the bottom of the case, and the charging side circuit 12 is connected to the charging side coil, and the mobile phone having the power receiving side circuit 16 and the power receiving side coil disposed at the bottom. Measure the power supplied to the charging coil (charging power) and the power received by the receiving coil (received power) while moving the mobile phone in the case in the vertical and horizontal directions. The change in dielectric efficiency (charging efficiency) with respect to the change in the position of the mobile phone in the case (change in the positional relationship between the charging side coil and the receiving side coil) was obtained. Note that dielectric efficiency (charging efficiency) = received power / charged power × 100 (%).

  When the mobile phone is moved in the vertical direction while the mobile phone is located in the center in the horizontal direction in the case, the change in dielectric efficiency when the position of the power receiving coil relative to the charging coil is moved in the vertical direction. As shown in FIG. Note that the vertical axis in FIG. 6B represents the vertical distance from the bottom of the case to the bottom of the mobile phone (the power receiving side coil). In general, in order to fully charge a storage battery of a mobile phone in a charging time of about 1 hour, power of 3 W or more is required. Since the charging power by the charging side circuit 12 according to the present embodiment is 10 W, a dielectric efficiency of 30% or more is required to obtain a receiving power of 3 W or more. On the other hand, when the power receiving side coil is positioned on the bottom side in the case as shown by “high dielectric efficiency range” in FIG. 6B, it is specifically positioned inside the charging side coil. A sufficient dielectric efficiency of 30% or more is obtained. Therefore, in a state where the electric device is mounted on the mounting portion, the arrangement positions of the power receiving side coil and the charging side coil are adjusted so that the power receiving side coil is positioned inside the charging side coil. Thus, it can be understood that sufficient dielectric efficiency can be obtained.

  In addition, when the mobile phone is moved in the horizontal direction while the bottom of the mobile phone (the power receiving side coil) is in contact with the bottom surface of the case, the position of the power receiving side coil with respect to the charging side coil is moved in the horizontal direction. The change in dielectric efficiency is shown in FIG. Note that the horizontal axis of FIG. 6C represents the distance from the reference position when the mobile phone is positioned at the center in the horizontal direction in the case as the reference position (= 0). As shown in FIG. 6C, the dielectric efficiency increases as the horizontal position of the mobile phone deviates from the horizontal center in the case, and the electric power is received while the electric device is mounted on the mounting portion. A higher dielectric efficiency can be obtained by adjusting the arrangement position of the power receiving side coil and the charging side coil and the shape of the mounting portion so that the horizontal distance between the side coil and the charging side coil is as small as possible. Understandable.

It is a block diagram which shows schematic structure of the electric equipment charging system which concerns on this embodiment. It is a perspective view which shows the vehicle interior in which the console box was attached. It is a perspective view which shows the console box in which the charge side coil was integrated. It is a flowchart which shows the content of the electric equipment monitoring process performed with a fixed period by a waveform determination part. It is a flowchart which shows the content of the interruption process at the time of the ignition off performed by the waveform determination part when an ignition switch is turned off. It is the schematic and diagram which show the result of the experiment which this inventor implemented.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric equipment charging system 12 Charging side circuit 14 Cellular phone 16 Power receiving side circuit 22 Regulator 24 AC voltage generation / waveform separation unit 26 Waveform judgment unit 30 Charging side coil 34 Power receiving side coil 42 DC-DC conversion / signal transmission unit 46 Storage battery 58 Cup holder

Claims (5)

Mounted on a power receiving side coil, a charging means for charging a power storage unit with charging power supplied via the power receiving side coil, and an electric device comprising a transmitting means for transmitting a predetermined signal via the power receiving side coil A charging side coil provided in the vicinity of the mounting portion in the vehicle interior for placing;
A power supply means for supplying electric power for charging to the electric device mounted on the mounting portion via the charging side coil;
Only when the predetermined signal is received via the charging side coil from the electric device placed on the mounting portion, the electric device that is the source of the predetermined signal is charged via the charging side coil. Power supply control means for controlling the power supply means so that power is supplied;
A vehicle charging device including:   The charging device for a vehicle according to claim 1, wherein the charging side coil is wound so as to surround the mounting portion.   When the ignition switch of the vehicle is turned off, it further comprises notification means for notifying when the predetermined signal is received from the electric device mounted on the mounting portion via the charging side coil. The vehicle charging device according to claim 1. An electric device capable of being mounted on a mounting portion provided in the vicinity of the charging coil of the vehicle charging device according to any one of claims 1 to 3,
A power receiving coil,
Charging means for charging the power storage unit with the charging power supplied via the power receiving coil;
Transmitting means for transmitting a predetermined signal via the power receiving coil;
Electrical equipment characterized by comprising   A vehicle non-contact charging system comprising: the vehicle charging device according to any one of claims 1 to 3; and the electric device according to claim 4.

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