JP2010178499A - Noncontact charger, distance measuring unit of positional relation detector for noncontact charger, and distance measurement unit of positional relation detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact charger capable of precisely and quickly detecting the relative positional relation between a primary device and a secondary device. <P>SOLUTION: The noncontact charger includes a positional relation detector M which detects the relative positional relation between the primary device E1 connected to a charging power supply and the secondary device E2 connected to a power accumulating device. The positional relation detector M has a distance measurement unit Mp disposed on the secondary device E2, and a distance measuring unit Ma disposed on the primary device E1. The distance measurement unit Mp has a distance measurement surface 3 counter to the distance measuring unit Ma, the distance measurement surface 3 having a circular sectional shape on a plane perpendicular to a given distance measuring direction and a radius gradually increasing toward one side of the distance measuring direction. The distance measuring unit Ma has three or more distance measuring portions 4 dispersedly arranged on the same circumference on a plane perpendicular to the distance measuring direction, the distance measuring portions 4 measuring the distance up to the distance measurement surface 3 in the distance measuring direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a non-contact charging device including a positional relationship detection device for detecting a relative positional relationship between a primary device connected to a charging power source and a secondary device connected to a power storage device, and the non-contact charging device thereof The present invention relates to a distance measuring device of a positional relationship detection device for use and a distance measuring device of a positional relationship detection device.

Such a non-contact charging apparatus is configured such that a primary side device connected to a charging power source and a secondary side device connected to a power storage device are positioned in an appropriate relative positional relationship in a non-contact state, and the power storage device is powered by the charging power source. As an application, for example, an application for charging a power storage device mounted on an electric vehicle can be cited.
In order to position the primary device and the secondary device in an appropriate relative positional relationship, a positional relationship detection device that detects the relative positional relationship between the primary device and the secondary device is provided.

Conventionally, the positional relationship detection device of such a non-contact charging device includes a moving means for moving a primary coil provided in the primary side device in a state crossing the front of the secondary coil provided in the secondary side device, Appropriate position determining means for determining whether or not the relative positional relationship between the primary side device and the secondary side device is appropriate based on the power fluctuation of the primary coil or the secondary coil when the primary coil is moved by the moving means; It was configured with.
That is, when the primary coil is moved by the moving means so as to cross the front of the secondary coil, the induced electromotive force of the secondary coil increases as the primary coil approaches the secondary coil, and the primary coil becomes the secondary coil. As it moves away, the induced electromotive force of the secondary coil decreases. Therefore, whether or not the relative positional relationship between the primary side device and the secondary side device is appropriate based on the power fluctuation of the primary coil or the secondary coil when the primary coil is moved across the front of the secondary coil. (For example, refer to Patent Document 1).

JP-A-8-265992

However, in the conventional positional relationship detection apparatus, when a metal component (for example, a vehicle body of an electric vehicle) made of metal exists around the secondary coil, an induced electromotive force is also generated in the metal component. And since the electric power of the primary coil and the secondary coil fluctuates due to the induced electromotive force generated from the metal component, the relative positional relationship between the primary device and the secondary device may not be detected with high accuracy. was there.
In addition, since the relative positional relationship between the primary side device and the secondary side device cannot be detected unless the primary coil is moved across the front of the secondary coil, the relative position between the primary side device and the secondary side device can be detected. There was also a problem that the relationship could not be detected quickly.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a contactless charging apparatus capable of accurately and quickly detecting a relative positional relationship between a primary side device and a secondary side device, and the contactless device thereof. An object of the present invention is to provide a distance measuring device and a distance measuring device for a positional relationship detection device for a charging device.

The contactless charging device of the present invention includes a positional relationship detection device that detects a relative positional relationship between a primary device connected to a charging power source and a secondary device connected to a power storage device,
The first characteristic configuration is that the positional relationship detection device is provided on a distance measuring device provided on one of the primary device and the secondary device, and on the other of the primary device and the secondary device. A distance measuring device,
The distance measuring device has a distance measuring surface in which a transverse shape on a surface orthogonal to a predetermined distance measuring direction is circular and the diameter thereof gradually decreases or gradually increases toward one side of the distance measuring direction. Prepare to face the distance device,
The distance measuring device has a plurality of three or more distance measuring units that measure the distance to the surface to be measured in the distance measuring direction in a distributed manner on the same circumference in a plane orthogonal to the distance measuring direction. It is in the point to be prepared.

That is, the relative positional relationship between the primary side device and the secondary side device is such that the axis of the surface to be measured and the axis of the circumference where the plurality of distance measuring units are distributed (hereinafter referred to as the distance measuring unit arrangement axis). And the distance to the distance measuring surface measured by each of the plurality of distance measuring units is the same.
In addition, when the surface to be measured is configured to have a convex shape whose diameter gradually decreases toward the distance measuring device side, the relative positional relationship between the primary side device and the secondary side device is, for example, for the arrangement of the distance measuring unit. When the axis is shifted from the position coaxial with the axis of the surface to be measured in the direction of one of the plurality of distance measuring units, the relative relationship of the measurement distances by the plurality of distance measuring units is The relative relationship is such that the distance measured by the distance measuring unit located in the shifted direction is maximized.
Further, when the surface to be measured is configured in a concave shape whose diameter gradually increases toward the distance measuring device side, the relative positional relationship between the primary side device and the secondary side device is, for example, for the distance measuring unit arrangement. When the axis is shifted from the position coaxial with the axis of the surface to be measured in the direction of one of the plurality of distance measuring units, the relative relationship of the measurement distances by the plurality of distance measuring units is The relative relationship is such that the distance measured by the distance measuring unit located in the shifted direction is minimized.
In other words, the relative relationship of the measurement distances by the plurality of distance measuring units is characteristic in the direction of the deviation depending on the direction in which the distance measurement unit placement axis is displaced from the position that is coaxial with the axis of the surface to be measured. Therefore, the relative positional relationship between the primary device and the secondary device can be detected based on the relative relationship between the measurement distances of the plurality of distance measuring units.

As long as there are no obstacles between the distance measuring unit and the surface to be measured, the distance measuring unit can properly measure the distance to the surface to be measured, Based on the relative relationship, the relative positional relationship between the primary device and the secondary device can be accurately detected.
In addition, the relative positional relationship between the primary side device and the secondary side device can be detected by measuring the distance to the surface to be measured by a plurality of ranging units without moving the primary side device and the secondary side device. Since it can be performed by measuring, it can be performed quickly.
Accordingly, it is possible to provide a contactless charging apparatus that can detect the relative positional relationship between the primary device and the secondary device with high accuracy and speed.

In addition to the first feature configuration described above, the second feature configuration of the contactless charging device includes:
The primary device is provided with a primary coil that is excited by the power source for charging,
A secondary coil that is electromagnetically coupled to the primary coil to generate an induced electromotive force in the secondary device and charges the generated induced electromotive force to the power storage device has its axis as the axis of the primary coil. Provided in parallel,
The distance measuring direction is set in a direction parallel to the axis of the primary coil and the secondary coil.

That is, the primary coil and the secondary coil are provided with their respective axes parallel to each other, and the distance to the surface to be measured in a direction parallel to the axes of the primary coil and the secondary coil by each of the plurality of distance measuring units. Therefore, by moving one of the primary side device and the secondary side device along a plane orthogonal to the axis, the primary side device and the secondary side device are connected to the primary coil and the secondary coil. Can be aligned so as to be coaxial or substantially coaxial.
When the primary coil and the secondary coil are coaxial or substantially coaxial, an induced electromotive force can be generated as efficiently as possible by the secondary coil, so that the power storage device can be charged efficiently.
Accordingly, the primary device and the secondary device can be aligned so that the power storage device can be charged efficiently.

In addition to the second feature configuration, the third feature configuration of the non-contact charging device includes:
The distance measuring surface is provided coaxially with one axis of the primary coil and the secondary coil provided integrally with the distance measuring device on one of the primary side device and the secondary side device,
The plurality of distance measuring sections are the same circumference coaxial with the other axial center of the primary coil and the secondary coil provided integrally with the distance measuring device on the other of the primary side device and the secondary side device. It is in the point arranged above.

That is, even if the relative position in the rotation direction of the primary device and the secondary device around the axis parallel to the distance measuring direction is different, the distance to the surface to be measured measured by each of the plurality of distance measuring units is the same. If it becomes, a primary coil and a secondary coil will become coaxial, and an induced electromotive force can be generated with high efficiency as much as possible by a secondary coil.
For example, when the secondary device is mounted on an electric vehicle, even if the direction in which the electric vehicle is parked is inclined, the distance to the surface to be measured that is measured by each of the plurality of distance measuring units is the same. If the primary side device and the secondary side device are aligned as described above, the primary coil and the secondary coil are coaxial, and the power storage device mounted on the electric vehicle can be efficiently charged.
Therefore, the primary side device and the secondary side device can be charged efficiently so that the power storage device can be efficiently charged regardless of the relative position difference between the primary side device and the secondary side device around the axis parallel to the distance measuring direction. Can now be aligned.

In addition to any one of the first to third characteristic configurations described above, the fourth characteristic configuration of the contactless charging apparatus is:
The relative positional relationship between the primary side device and the secondary side device is appropriate when the distances to the distance measuring surfaces measured by each of the plurality of distance measuring units are the same or substantially the same. It is in the point provided with the determination means to determine.

That is, when the distances to the surface to be measured measured by each of the plurality of distance measuring units are the same or substantially the same, the relative positional relationship between the primary side device and the secondary side device is determined appropriately by the determination unit. It is determined that
From the determination result of the determination means, it can be accurately understood that the primary device and the secondary device are properly aligned.
For example, when the determination unit determines that the relative positional relationship between the primary device and the secondary device is appropriate, information indicating that the primary device and the secondary device are properly aligned. It is also preferable to provide output means for outputting. In this way, the operator of the contactless charging device can accurately know that the primary side device and the secondary side device are properly aligned based on the output information by the output means. Usability is improved.
Accordingly, it can be accurately understood that the primary side device and the secondary side device are properly aligned.

In addition to any one of the first to fourth characteristic configurations described above, the fifth characteristic configuration of the contactless charging apparatus is:
The distance measuring device is provided in the secondary side device,
The distance measuring device is provided in the primary side device;
Based on the position adjustment device that enables the primary side device to move the plurality of distance measuring units along a surface orthogonal to the distance measuring direction, and the measurement information by the plurality of distance measuring units, the primary side device. And a control means for controlling the operation of the position adjusting device so as to be in an appropriate position with respect to the secondary side device.

  That is, the primary side device is provided with a position adjusting device that allows a plurality of distance measuring units to move along a plane orthogonal to the distance measuring direction, and a control means that controls the operation of the position adjusting device. Without the communication device for communicating information between the primary side device and the secondary side device, the primary side device to the secondary side device by the control means based on the measurement information by the plurality of distance measuring units Therefore, the operation of the position adjusting device can be controlled so as to be in an appropriate position. If the communication device is not provided, the contactless charging device can be reduced in price.

In addition, since the distance measuring device provided in the secondary side device has a distance measuring surface that can be reduced in weight, the distance measuring device can be reduced in weight. Is provided on a moving body such as an electric vehicle, it is possible to suppress an increase in the weight of the moving body even if a distance measuring device is provided. As a result, an increase in energy consumption for traveling of the moving body is suppressed. can do.
In addition, the combined price of a plurality of distance measuring units, position adjusting devices, and control means provided in the primary side device is considerably higher than that of the distance measuring device provided in the secondary side device. Common use of the unit, position adjustment device, and control means, and an inexpensive distance measuring device for a mobile object that may be changed to a new one such as an electric vehicle to be replaced. By providing, the running cost concerning charge of an electrical storage apparatus can be reduced.
Therefore, the contactless charging device that can automatically align the primary side device and the secondary side device in an appropriate relative positional relationship can be reduced in price, and the contactless charging device is mounted on the moving body. When used for charging the power storage device, it is possible to reduce energy consumption for traveling of the mobile body and running cost related to charging of the power storage device.

In addition to the fifth characteristic configuration described above, the sixth characteristic configuration of the contactless charging apparatus includes:
The distance-measuring surface is configured to be concave.

In other words, since the distance measuring surface is configured in a concave shape, for example, when the distance measuring surface is provided on a moving object, the distance measuring surface is provided on a moving object such as an electric vehicle so that the distance measuring surface does not protrude outside. Is possible.
For example, when a plurality of distance measuring units are provided on the floor surface, the distance measuring surface can be provided at the bottom of the moving body so as not to protrude downward. It can be avoided.
Therefore, when the distance measuring surface is provided on the moving object, the distance measuring surface can be provided on the moving object while avoiding adverse effects on the traveling of the moving object.

In addition to any one of the first to fourth characteristic configurations described above, the seventh characteristic configuration of the contactless charging apparatus is:
The distance measuring device is provided in the primary side device;
The distance measuring device is provided in the secondary side device,
Based on the position adjustment device that enables the secondary side device to move the plurality of distance measuring units along a plane orthogonal to the distance measuring direction, and the secondary information based on the measurement information by the plurality of distance measuring units. Control means for controlling the operation of the position adjusting device so that the side device is in an appropriate position with respect to the primary side device.

That is, the secondary device is provided with a position adjusting device that allows a plurality of distance measuring units to move along a plane orthogonal to the distance measuring direction, and a control unit that controls the operation of the position adjusting device. Therefore, without providing a communication device for communicating information between the primary side device and the secondary side device, the secondary side device is changed to the primary side device by the control means based on the measurement information by the plurality of distance measuring units. On the other hand, the operation of the position adjusting device can be controlled so as to be in an appropriate position. If the communication device is not provided, the contactless charging device can be reduced in price.
For example, when the secondary device is mounted on an electric vehicle, when the electric vehicle is inspected at an inspection site such as a dealer, a plurality of distance measuring units, position adjusting devices, control means, etc. are inspected. Since it can carry out together, the maintenance of a non-contact charging device can be facilitated.
Therefore, it is possible to reduce the cost of the contactless charging device that can automatically align the primary device and the secondary device in an appropriate relative positional relationship, and the contactless charging device is mounted on an electric vehicle. When used for charging the power storage device, maintenance of the contactless charging device can be facilitated.

In addition to the fifth characteristic configuration described above, the eighth characteristic configuration of the contactless charging apparatus is
The distance-measuring surface is formed in a convex shape.

That is, since the surface to be measured is formed in a convex shape, it is possible to prevent water such as rainwater from collecting on the surface to be measured even when the surface to be measured is provided upward on the floor surface or the like. .
If water accumulates on the surface to be measured, the distance measurement accuracy by the distance measuring unit may decrease, so it is necessary to remove the water collected on the surface to be measured. With this configuration, it is possible to eliminate the maintenance work for removing the water accumulated on the surface to be measured.
Therefore, even when the surface to be measured is provided upward on the floor or the like, the distance measurement accuracy by the distance measuring unit is maintained with high accuracy while reducing maintenance work, and the primary side device and the secondary side device are The relative positional relationship can be detected with high accuracy.

In addition to any one of the first to eighth characteristic configurations described above, the ninth characteristic configuration of the contactless charging apparatus includes:
The plurality of distance measuring units are provided in a distributed manner at equally or substantially equally divided positions on the circumference.

In other words, since the plurality of distance measuring units are distributed at equal or substantially equal positions on the circumference around the axis for positioning the distance measuring unit, all of the plurality of distance measuring units or Compared to the case where a part of the center of the distance measurement unit is disposed on the circumference of the center of the axis, the axis of the distance measurement unit is displaced from the axis of the surface to be measured. In this case, the difference in distance measured by each of the plurality of distance measuring units increases.
In other words, when a plurality of distance measuring units are provided at equal or substantially equal positions on the circumference around the distance measuring unit arrangement axis, the distance measuring unit arrangement axis When the axis of the surface to be measured is misaligned, the measured values of some of the distance measuring units are larger than when the axes are coaxial. Since the measurement values of the remaining ones of the plurality of distance measuring units are reduced, the difference in distance measured by each of the plurality of distance measuring units is increased.
On the other hand, if all or some of the plurality of distance measuring units are provided so as to be biased to a part of the circumference centered on the distance measuring unit arrangement axis, When the axis of the surface to be measured is deviated, the measured values of each of the plurality of distance measuring units provided in a biased manner are uniformly larger than when the axes are coaxial. Or, since it tends to be uniformly small, the difference in distance measured by each of the plurality of distance measuring units is small.
Accordingly, when the distance measurement unit placement axis is shifted from the axis of the surface to be measured, the difference between the distances measured by each of the plurality of distance measurement units becomes large. The detection accuracy of the relative positional relationship with the side device can be further improved.

In addition to any one of the first to ninth feature configurations described above, the tenth feature configuration of the contactless charging apparatus includes:
The secondary device is mounted on a moving body, detects an inclination of the secondary device relative to the primary device, and the secondary device based on detection information of the tilt detector In other words, an inclination correction means for correcting the inclination is provided.

That is, even if the attitude of the mobile body on which the secondary side device is mounted is tilted from the proper attitude, even if the secondary side device is tilted with respect to the primary side device, the tilt correction means detects the detection information of the tilt detection device. Based on this, the inclination of the secondary device is corrected.
That is, even if the moving body is tilted, the tilt correction means is arranged so that the axis of the secondary coil is parallel to the axis of the primary coil even if the axis of the secondary coil is not parallel to the axis of the primary coil. Since the inclination of the secondary device is corrected by the above, the primary device and the secondary device can be aligned so that the primary coil and the secondary coil are coaxial or substantially coaxial.
Therefore, even if the attitude of the moving body on which the secondary device is mounted is tilted, the primary device and the secondary device are aligned so that the primary coil and the secondary coil are coaxial or substantially coaxial. Therefore, the power storage device can be efficiently charged.

In addition to any one of the first to tenth feature configurations, the eleventh feature configuration of the non-contact charging device includes:
The ratio of the length in the axial direction to the diameter of the maximum diameter portion on the surface to be measured is configured to be larger than that in the case where the surface to be measured is configured by a part of a spherical surface. is there.

That is, the ratio of the length in the axial direction to the diameter of the maximum diameter portion on the surface to be measured is larger than that in the case where the surface to be measured is constituted by a part of a spherical surface. When the center of the surface to be measured is misaligned with the axis of the surface to be measured, the amount of change in the distance measured by the distance measuring unit with respect to the change in the amount of deviation is such that the surface to be measured is composed of a part of a spherical surface. Larger than the case.
Therefore, the detection accuracy of the relative positional relationship between the primary device and the secondary device can be further improved.

The distance measuring device of the positional relationship detection device of the present invention detects a relative positional relationship between a primary device connected to a charging power source and a secondary device connected to a power storage device,
The first characteristic configuration is
When the distance measuring device is provided in one of the primary side device and the secondary side device, the distance measuring device is provided on the other of the primary side device and the secondary side device and includes a predetermined distance measuring surface. Configured to detect the relative positional relationship in cooperation with an apparatus;
A point in which three or more distance measuring units that measure the distance to the surface to be measured in a predetermined distance measuring direction are distributed and arranged on the same circumference in a plane orthogonal to the distance measuring direction. is there.

That is, the distance measuring device disperses three or more distance measuring units that measure the distance to the surface to be measured in a predetermined distance measuring direction on the same circumference in a plane orthogonal to the distance measuring direction. Therefore, a distance measuring surface whose cross-sectional shape on a surface orthogonal to the distance measuring direction is circular and whose diameter gradually decreases or increases toward one side in the distance measuring direction faces the distance measuring device. Similar to the description of the first characteristic configuration of the contactless charging device previously described in cooperation with the distance measuring device provided, based on the relative relationship of the measurement distances by the plurality of distance measuring units, The relative positional relationship with the secondary device can be detected with high accuracy.
In addition, such a relative positional relationship between the primary side device and the secondary side device can be detected by measuring the distance to the surface to be measured by a plurality of distance measuring units without moving the primary side device and the secondary side device. Since it can be performed by measuring, it can be performed quickly.
Accordingly, it is possible to provide a distance measuring device of a positional relationship detection device that can detect the relative positional relationship between the primary device and the secondary device with high accuracy and speed.
When,

The distance measuring device of the positional relationship detection device of the present invention detects a relative positional relationship between a primary device connected to a charging power source and a secondary device connected to a power storage device,
The first characteristic configuration is
The relative positional relationship is detected in cooperation with a predetermined distance measuring device provided in one of the primary side device and the secondary side device and provided in the other of the primary side device and the secondary side device. Composed of
A distance measuring surface whose transverse shape on a surface orthogonal to a predetermined distance measuring direction is circular and whose diameter gradually decreases or increases toward one side in the distance measuring direction is opposed to the distance measuring device. It is in the point to prepare.

In other words, the distance measuring device has a distance measuring surface that has a circular cross-sectional shape on a surface orthogonal to a predetermined distance measuring direction and whose diameter gradually decreases or increases toward one side in the distance measuring direction. Since it is provided so as to face the apparatus, three or more ranging units that measure the distance to the ranging surface in the ranging direction are distributed on the same circumference in a plane orthogonal to the ranging direction. Based on the relative relationship between the distances measured by a plurality of distance measuring units, the primary side device is similar to the first characteristic configuration of the contactless charging device previously described in cooperation with the distance measuring device arranged and provided. The relative positional relationship between the secondary device and the secondary device can be detected with high accuracy.
In addition, such a relative positional relationship between the primary side device and the secondary side device can be detected by measuring the distance to the surface to be measured by a plurality of distance measuring units without moving the primary side device and the secondary side device. Since it can be performed by measuring, it can be performed quickly.
Therefore, it is possible to provide a distance measuring device of a positional relationship detection device that can detect the relative positional relationship between the primary device and the secondary device accurately and quickly.

It is a schematic side view which shows the installation state of the non-contact charging device which concerns on 1st Embodiment. It is a longitudinal cross-sectional view which shows the installation state of the non-contact charging device which concerns on 1st Embodiment. It is the bottom view (a) of the secondary side apparatus in the non-contact charging device which concerns on 1st Embodiment, and the top view (b) of the primary side apparatus. It is a block diagram which shows the control structure of the non-contact charging device which concerns on 1st Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 1st Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 1st Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 1st Embodiment. It is a schematic side view which shows the installation state of the non-contact charging device which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view which shows the installation state of the non-contact charging device which concerns on 2nd Embodiment. It is the bottom view (a) of the secondary side apparatus in the non-contact charging device which concerns on 2nd Embodiment, and the top view (b) of the primary side apparatus. It is a block diagram which shows the control structure of the non-contact charging device which concerns on 2nd Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 2nd Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 2nd Embodiment. It is a figure explaining the structure which detects the relative positional relationship of a primary side apparatus and a secondary side apparatus in the non-contact charging device which concerns on 2nd Embodiment. It is a schematic plan view which shows the installation state of the non-contact charging device which concerns on another embodiment. It is a schematic side view which shows the installation state of the non-contact charging device which concerns on another embodiment. It is a figure which shows the to-be-measured surface which concerns on another embodiment.

Hereinafter, an embodiment in the case where the present invention is applied to a contactless charging apparatus for an electric vehicle will be described with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment will be described based on the drawings.
As shown in FIGS. 1 to 3, the contactless charging device includes a primary device E1 connected to the charging power source 1, a secondary device E2 connected to the power storage device 2, and the primary device E1. A positional relationship detection device M that detects a relative positional relationship with the secondary device E2 is provided.
The secondary side device E2 is mounted on an electric vehicle C as an example of a moving body, and the primary side device E1 is provided on the ground side such as a floor G of a garage of the electric vehicle C. And based on the detection information of the positional relationship detection apparatus M, the primary side apparatus E1 and the secondary side apparatus E2 are aligned in an appropriate relative positional relationship in a non-contact state with each other, and for charging provided on the ground side The power source 1 is configured to charge the power storage device 2 mounted on the electric vehicle C.
Incidentally, the power storage device 2 includes a storage battery, a capacitor, and the like.

In the present invention, the positional relationship detection device M is provided in the distance measuring device Mp provided in one of the primary device E1 and the secondary device E2, and in the other of the primary device E1 and the secondary device E2. And a distance measuring device Ma.
The distance measuring device Mp has a distance measuring surface 3 that has a circular transverse shape on a surface perpendicular to a predetermined distance measuring direction and whose diameter gradually decreases or increases toward one side in the distance measuring direction. Prepare to face Ma.
The distance measuring device Ma disperses three or more distance measuring units 4 that measure the distance to the distance measuring surface 3 in the distance measuring direction on the same circumference in a plane orthogonal to the distance measuring direction. Prepare.

In the first embodiment, the distance measuring device Mp is provided in the secondary device E2, and the distance measuring device Ma is provided in the primary device E1.
The distance measuring device Mp is configured in a concave shape whose diameter gradually increases toward the distance measuring direction side (ranging device side).

Hereinafter, each part of the non-contact charging device according to the first embodiment will be described.
As shown in FIGS. 2 to 4, the primary side device E <b> 1 makes the primary coil 5 excited by the charging power source 1 and the plurality of distance measuring units 4 movable along a plane orthogonal to the distance measuring direction. The position adjusting device 6 and the primary side control means 7 for controlling the operation of the primary side device E1 are provided.
Incidentally, as shown in FIG. 4, the power supply circuit 8 converts the charging power supply 1 into a high frequency current and supplies it to the primary coil 5, thereby exciting the primary coil 5.
Further, the primary side device E1 is provided with a primary side communication unit 9 that communicates with a secondary side communication unit 17 of a secondary side device E2 described later.

As shown in FIGS. 2 and 3, the primary coil 5 is formed by winding an electric wire around a cylindrical magnetic core 10 made of ferrite, for example, and in a resin protective body 11 having a planar upper surface, The axis of the magnetic core 10, that is, the axis A <b> 1 of the primary coil 5 is accommodated in a posture orthogonal to the upper surface of the protector 11.
The plurality of distance measuring units 4 are arranged on the same circumference coaxial with the axis A1 of the primary coil 5 provided integrally with the distance measuring device Ma in the primary side device E1.

The distance measuring unit 4 is configured to measure the distance to the object to be measured without contact with the object to be measured. For example, various types such as an optical type using infrared rays or a laser, an ultrasonic type using ultrasonic waves, and the like. A distance sensor is used.
Since the optical or ultrasonic distance measuring unit 4 is well known, the detailed description and illustration will be omitted and briefly described. The optical distance measuring unit 4 emits a light pulse toward the object to be measured. A sensor unit 4s including a light projecting unit for projecting light and a light receiving unit for receiving a reflected light pulse from the object to be measured is provided, and the light pulse is projected onto the object to be measured and then the reflected light pulse is received. And measuring the distance to the object to be measured based on the measurement time.
The ultrasonic distance measuring unit 4 includes a sensor unit including an ultrasonic wave oscillating unit that oscillates ultrasonic waves toward the object to be measured and an ultrasonic wave receiving unit that receives ultrasonic waves reflected from the object to be measured. 4s, configured to measure the time from when an ultrasonic wave is oscillated to the object to be measured until the reflected wave is received, and to measure the distance to the object to be measured based on this measurement time ing.

The sensor units 4s of the plurality of distance measuring units 4 are arranged on the upper surface of the protective body 11 of the primary coil 5 with the axis A1 of the primary coil 5 in a posture in which each distance measuring direction is parallel to the axis A1 of the primary coil 5. The primary side unit 12 is configured to be distributed at equal positions on the same circumference of the same axis.
Incidentally, in the first embodiment, three distance measuring sections 4 are provided, and the sensor sections 4s of the three distance measuring sections 4 are arranged on the same circumference coaxial with the axis A1 of the primary coil 5. It is distributed and provided at positions separated by 120 ° in angle.
When the three distance measuring sections 4 are described by distinguishing the installation positions, the subscripts a, b, and c are added, and the A point distance measuring section 4a, the B point distance measuring section 4b, and the C point distance measuring apparatus. When the three sensor units 4s are described by distinguishing the installation positions, the subscripts a, b, and c are added to the A point sensor unit 4sa, the B point sensor unit 4sb, It is described as a C point sensor unit 4sc.

  Since the position adjusting device 6 uses a well-known device, the detailed description and illustration will be omitted and briefly described. The position adjusting device 6 can reciprocate in a predetermined direction (hereinafter referred to as X direction). A supported X-direction moving body, an X-direction electric motor 6x (see FIG. 4) for reciprocating the X-direction moving body, and a direction orthogonal to the X direction on the X-direction moving body (hereinafter referred to as Y) Y-direction moving body supported reciprocally in a reciprocating manner and a Y-direction electric motor 6y (see FIG. 4) for reciprocating the Y-direction moving body.

As shown in FIGS. 1 and 2, the position adjusting device 6 is provided on the floor G of the garage in a posture in which the X direction and the Y direction are oriented in the horizontal direction, and the position adjusting device 6 is moved in the Y direction. The primary unit 12 is provided on the body so that the axis A1 of the primary coil 5 is oriented in the vertical direction, and the primary coil 5 and the plurality of distance measuring units 4 can be moved and operated integrally along the horizontal plane. It is configured as follows.
As shown in FIG. 1, the charging power source 1 and the primary side control means 7 are accommodated in a primary side box 13, and the primary side box 13 is provided on the floor G of the garage.

As shown in FIGS. 2 to 4, the secondary device E2 is electromagnetically coupled to the primary coil 5 to generate an induced electromotive force, and the secondary coil 14 that charges the power storage device 2 with the generated induced electromotive force; The secondary side control means 15 etc. which control the action | operation of the secondary side apparatus E2 are provided and comprised.
Incidentally, as shown in FIG. 4, the induced electromotive force generated by the secondary coil 14 is converted into DC power by the charging circuit 16, and the converted DC power is charged in the power storage device 2.
Further, the secondary side device E2 is provided with a secondary side communication unit 17 that communicates with the primary side communication unit 9 of the primary side device E1 described above.

Similar to the primary coil 5 described above, the secondary coil 14 is configured by winding an electric wire around a cylindrical magnetic core 18 made of ferrite.
In the protective body 19 made of resin so that the secondary coil 14 has a concave distance measuring surface 3 whose diameter gradually increases toward the front side in the axial direction, the axial center of the magnetic core, That is, the secondary side unit 20 is configured such that the axis A2 of the secondary coil 14 is accommodated so as to be coaxial with the concave distance measuring surface 3 of the protector 19.
That is, the distance measuring surface 3 is provided coaxially with the axis A2 of the secondary coil 14 provided integrally with the distance measuring device Mp in the secondary side device E2.
In the first embodiment, the concave distance measuring surface 3 is constituted by a part of a spherical surface.

In the secondary unit 20, the axis A <b> 2 of the secondary coil 14 faces the vertical direction and the concave distance measuring surface 3 faces downward in a state where the body of the electric vehicle C is maintained in a horizontal posture. In the posture, it is provided at the bottom of the car body. When the secondary side unit 20 is provided at the bottom of the vehicle body, the secondary side unit 20 is provided so as not to protrude downward from the bottom of the vehicle body, so that the minimum ground height of the electric vehicle C is avoided. Has been.
That is, the secondary coil 14 that causes the secondary side device E2 to be electromagnetically coupled to the primary coil 5 to generate an induced electromotive force and charge the generated induced electromotive force to the power storage device 2 has its axis A2 connected to the primary coil 5. The distance measuring direction is set in a direction parallel to the axes A1 and A2 of the primary coil 5 and the secondary coil 14.

As shown in FIG. 4, the secondary side control means 15 is configured using a main control means 21 that controls the electric vehicle C.
The electric vehicle C includes a storage capacity detection unit 22 that detects the storage capacity of the power storage device 2, a vehicle body tilt sensor 23 that detects the tilt of the vehicle body with respect to the horizontal plane, an active suspension 24 that adjusts the attitude of the vehicle body with respect to the horizontal plane, and the like. It has been.
The main control means 21 is configured to control the operation of the active suspension 24 so that the posture of the vehicle body is leveled based on the detection information of the vehicle body tilt sensor 23 when a posture correction command is issued.
That is, the inclination detecting device for detecting the inclination of the secondary side device E2 with respect to the primary side device E1 is configured by the vehicle body inclination sensor 23, and the inclination of the secondary side device E2 is corrected based on the detection information of the inclination detecting device. The inclination correcting means R is composed of a main control means 21 and an active suspension 24.
In addition, description is abbreviate | omitted about the control operation of the main control means 21 other than the structure of the electric vehicle C other than the structure relevant to the non-contact charging apparatus mentioned above, and the control action relevant to a non-contact charging apparatus.

Next, control operations of the primary side control means 7 and the secondary side control means 15 will be described.
When the distances to the distance measuring surface 3 measured by each of the three distance measuring units 4 are the same or substantially the same, the primary side control means 7 has the primary side device E1 and the secondary side device E2. The relative position relationship is determined to be appropriate, and the determination means 25 is configured using the primary side control means 7.
If the primary side control means 7 determines that the relative positional relationship between the primary side device E1 and the secondary side device E2 is not appropriate based on the measurement information by the three distance measuring units 4, the primary side device The operation of the position adjusting device 6 is controlled so that E1 is in an appropriate position with respect to the secondary side device E2.

The control operation of the primary side control means 7 will be further described.
In the following description, the distance measured by the point A distance measuring unit 4a, the distance measured by the point B distance measuring unit 4b, and the distance measured by the point C distance measuring unit 4c are respectively represented by A It is described as a point distance Da, a B point distance Db, and a C point distance Dc.
5 to 7, the circumference where the sensor units 4 s of the three distance measuring units 4 are arranged side by side is indicated by a broken line, and the sensor units of the three distance measuring units 4 on the distance measuring surface 3. When the circumference in which 4s are arranged side by side is positioned coaxially with the surface to be measured 3, the position having the same diameter as the circumference is indicated by a one-dot chain line.
5 to 7, the center of the circle where the sensor units 4s of the three distance measuring units 4 are arranged side by side, that is, at the position of the point A sensor unit 4sa in the horizontal direction from the axis A1 of the primary coil 5. The direction toward the point, the direction toward the position of the point B sensor unit 4sb, and the direction toward the point C sensor unit 4sc are described as a Pa direction, a Pb direction, and a Pc direction, respectively.
In addition, the direction opposite to the Pa direction by 180 degrees, the direction opposite to the Pb direction by 180 degrees, and the direction opposite to the Pc direction by 180 degrees are described as the Px direction, the Py direction, and the Pz direction, respectively. .
A direction passing through the center between the Pa direction and the Py direction, a direction passing through the center between the Py direction and the Pc direction, and a direction passing through the center between the Pc direction and the Px direction are referred to as a Pay direction, a Pcy direction, and a Pcx direction, respectively.
Also, a direction passing through the center between the Px direction and the Pb direction, a direction passing through the center between the Pb direction and the Pz direction, and a direction passing through the center between the Pz direction and the Pa direction are described as a Pbx direction, a Pbz direction, and a Paz direction, respectively. .

The primary side control unit 7 has a relationship of the following (1) (hereinafter referred to as appropriate) of the interrelationship of the A point distance Da, the B point distance Db, and the C point distance Dc (hereinafter sometimes referred to as three measurement distances). In other words, when the distances to the distance measuring surfaces 3 are the same or substantially the same when measured by each of the three distance measuring units 4, FIG. As shown in (a), the axis A1 of the primary coil 5 and the axis A2 of the secondary coil 14 are coaxial or substantially coaxial, and the primary device E1 is in an appropriate position with respect to the secondary device E2. It is determined that it is located.
| Da-Db | ≦ α, | Da-Dc | ≦ α, | Db-Dc | ≦ α (1)

  However, α is a positive constant, and is set to such a value that the induced electromotive force generated from the secondary coil 14 by being electromagnetically coupled to the primary coil 5 is higher than a predetermined value and can efficiently charge the power storage device 2. The

Further, when the measurement distances at the three points are not properly correlated, the primary-side control unit 7 has the axis A1 of the primary coil 5 deviated from the axis A2 of the secondary coil 14, and the primary-side device E1 is It determines with not being located in an appropriate position with respect to the secondary side apparatus E2.
And when the primary side control part 7 determines with the primary side apparatus E1 not being in an appropriate position with respect to the secondary side apparatus E2, the primary side apparatus E1 is 2nd based on the measurement distance of 3 points | pieces. A displacement direction that is displaced with respect to the secondary device E2 (that is, a direction in which the axis A1 of the primary coil 5 is displaced with respect to the axis A2 of the secondary coil 14) is determined, and the primary device E1 is determined. The position correction direction for positioning the secondary side device E2 at an appropriate position is set to a direction opposite to the shift direction by 180 ° so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. In order to move the primary side device E1 (specifically, the primary side unit 12) in the position correction direction, the operation of the position adjusting device 6 (specifically, the operation of the X direction electric motor 6x and the Y direction electric motor 6y, respectively). ) Is configured to control.
Incidentally, the primary-side control means 7 determines the mutual relationship between the three measurement distances after the position adjustment device 6 is operated to move the primary-side device E1 in the position correction direction by a preset set movement distance. The primary side device E1 is configured to move so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship.

For example, when the mutual relationship between the measurement distances of the three points is in the relationship (2) below, the primary side control unit 7 causes the primary side device E1 to shift in the Pa direction as shown in FIG. The position adjustment direction is set to the Px direction, and the position adjustment device 6 is operated to move the primary side device E1 in the Px direction so that the mutual relationship between the three measurement distances is an appropriate mutual relationship. Control.
Db-Da> α, Dc-Da> α, Db = Dc (2)

When the mutual relationship between the measurement distances at the three points is the following (3), the primary-side control unit 7 determines that the primary-side device E1 has a Pa direction and a Py direction as shown in (c) of FIG. The position correction direction is determined to be a direction between the Px direction and the Pb direction (Pbx direction is illustrated in the figure), and the three points are measured. The operation of the position adjusting device 6 is controlled so that the primary side device E1 is moved in the direction between the Px direction and the Pb direction so that the mutual relationship of the distance becomes an appropriate mutual relationship.
Db-Da> α, Db-Dc> α, Dc> Da (3)

When the correlation between the three measurement distances has the following relationship (4), the primary-side control unit 7 indicates that the primary-side device E1 is displaced in the Py direction as shown in FIG. 6 (d). After the determination, the position correction direction is set to the Pb direction, and the operation of the position adjusting device 6 is controlled so that the primary side device E1 is moved in the Pb direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. .
Db-Da> α, Db-Dc> α, Da = Dc (4)

When the mutual relationship between the measurement distances of the three points is as shown in (5) below, the primary side control unit 7 causes the primary side device E1 to move between the Py direction and the Pc direction as shown in FIG. 6 (e). The position correction direction is set to a direction between the Pb direction and the Pz direction (Pbz direction is illustrated in the figure), and the measurement is performed at three points. The operation of the position adjusting device 6 is controlled so that the primary side device E1 is moved in the direction between the Pb direction and the Pz direction so that the mutual relationship of the distance becomes an appropriate mutual relationship.
Db-Da> α, Db-Dc> α, Da> Dc (5)

When the correlation between the three measurement distances is as shown in (6) below, the primary-side control unit 7 indicates that the primary-side device E1 is displaced in the Pc direction as shown in (f) of FIG. After determining, the position correction direction is set to the Pz direction, and the operation of the position adjusting device 6 is controlled so as to move the primary side device E1 in the Pz direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. .
Da-Dc> α, Db-Dc> α, Da = Db (6)

When the correlation between the three measurement distances has the following relationship (7), the primary-side control unit 7 indicates that the primary-side device E1 is displaced in the Px direction as shown in FIG. After determining, the position correction direction is set to the Pa direction, and the operation of the position adjusting device 6 is controlled so as to move the primary side device E1 in the Pa direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. .
Da-Db> α, Da-Dc> α, Db = Dc (7)

When the correlation between the three measurement distances is as shown in (8) below, the primary control unit 7 indicates that the primary device E1 is displaced in the Pb direction as shown in (h) of FIG. After determining, the position correction direction is set to the Py direction, and the operation of the position adjusting device 6 is controlled to move the primary side device E1 in the Py direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. .
Da-Db> α, Dc-Db> α, Da = Dc (8)

When the correlation between the three measurement distances has the following relationship (9), the primary side control unit 7 indicates that the primary side device E1 is displaced in the Pz direction as shown in (i) of FIG. After the determination, the position correction direction is set to the Pc direction, and the operation of the position adjusting device 6 is controlled so as to move the primary side device E1 in the Pc direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. .
Dc-Da> α, Dc-Db> α, Da = Db (9)

  The primary side device E1 is in the direction between the Pc direction and the Px direction, the direction between the Px direction and the Pb direction, the direction between the Pb direction and the Pz direction, and the direction between the Pz direction and the Pa direction. Since the control operation of the primary-side control means 7 in the case of deviation in each of the directions can be understood based on the above description, the description and illustration are omitted.

Then, the procedure for charging the electrical storage apparatus 2 is demonstrated.
The electric vehicle C is parked at a preset target parking position in the garage. This target parking position is determined such that the secondary coil 14 is positioned above the primary coil 5.
When the user commands the start of charging with a charging start switch (not shown) provided in the primary box 13, the primary side control means 7 causes the primary side device E1 to the secondary side device E2 as described above. It is determined whether or not it is positioned at an appropriate position, and when it is not positioned at an appropriate position, the operation of the position adjusting device 6 is controlled so that the primary side device E1 is positioned at an appropriate position with respect to the secondary side device E2. When it is determined that the primary side device E1 is located at an appropriate position with respect to the secondary side device E2, the primary side communication unit 9 transmits a charging start signal.

When the secondary communication unit 17 receives the charge start signal, the secondary control unit 15 determines whether or not the power storage device 2 needs to be charged based on the detection information of the storage capacity detection unit 22. When it is determined that charging is necessary, the secondary side control means 15 determines whether or not tilt correction is necessary based on the detection information of the vehicle body tilt sensor 23. If the secondary control means 15 determines that tilt correction is necessary, the secondary control means 15 outputs an attitude correction command and, based on the detection information of the vehicle body tilt sensor 23, the active suspension 24 to level the vehicle body. The secondary side communication unit 17 transmits a charge permission signal.
When the primary side communication unit 9 receives the charge permission signal, the primary side control means 7 controls the power supply circuit 8 to start exciting the primary coil 5.

When the secondary-side control unit 15 transmits the charge permission signal by the secondary-side communication unit 17, the secondary-side control unit 15 controls the charging circuit 16 to charge the power storage device 2 with the induced electromotive force generated by the secondary coil 14, and then When it is determined that the storage capacity of the power storage device 2 has reached a predetermined maximum capacity based on the detection information of the storage capacity detection unit 22, the secondary communication unit 17 transmits a charge stop signal, and the power storage device 2 The charging circuit 16 is controlled to stop charging.
The primary side control means 7 controls the power supply circuit 8 to stop the excitation of the primary coil 5 when the primary side communication part 9 receives a charge stop signal.

[Second Embodiment]
Hereinafter, the second embodiment of the present invention will be described, but the same components as those in the first embodiment and the components having the same action are omitted by giving the same reference numerals in order to avoid duplicate description, A configuration different from the first embodiment will be mainly described.
In the second embodiment, as shown in FIGS. 8 to 10, the distance measuring device Mp is provided in the primary device E1, the distance measuring device Ma is provided in the secondary device E2, and the distance measuring device Mp. However, an embodiment in which the diameter is configured to be a convex surface gradually decreasing toward the distance measuring direction side (ranging device side) will be described.

As shown in FIGS. 9-11, the primary side apparatus E1 is a primary side communication part which communicates with the primary coil 5 excited by the power supply 1 for charging, and the secondary side communication part 17 of the secondary side apparatus E2 mentioned later. 9 and primary side control means 7 for controlling the operation of the primary side device E1.
Similar to the first embodiment, the power supply circuit 8 converts the charging power supply 1 into a high-frequency current and supplies it to the primary coil 5, thereby exciting the primary coil 5.

As shown in FIGS. 9 and 10, the primary coil 5 is made of a resin having a planar upper surface, which is configured by winding an electric wire around a cylindrical magnetic core 10 as in the first embodiment. In the protector 11, the axis A <b> 1 of the primary coil 5 is accommodated in a posture orthogonal to the upper surface of the protector 11.
The protector 11 in which the primary coil 5 is housed is provided on the floor G of the garage in a posture in which the axis A1 of the primary coil 5 faces in the vertical direction and covers the protector 11 in the axial direction. The convex surface for measuring the distance-measuring surface is formed so that the convex distance-measuring surface 3 whose diameter gradually decreases toward the front side of the coil is formed in such a manner that its axis is coaxial with the axis A1 of the primary coil 5. 26 is made of concrete.
That is, the distance measuring surface 3 is provided coaxially with the axis A1 of the primary coil 5 provided integrally with the distance measuring device Mp on the primary side device E1.
In the second embodiment, the convex distance measuring surface 3 is constituted by a part of a spherical surface.

As shown in FIGS. 9 to 11, the secondary device E2 is electromagnetically coupled to the primary coil 5 to generate an induced electromotive force, and the secondary coil 14 that charges the power storage device 2 with the generated induced electromotive force; A position adjusting device 6 that allows the plurality of distance measuring units 4 to move along a plane orthogonal to the distance measuring direction, a secondary side communication unit 17 that communicates with the primary side communication unit 9 of the primary side device described above, The secondary side control means 15 etc. which control the action | operation of the secondary side apparatus E2 are provided and comprised.
Similarly to the first embodiment, the induced electromotive force generated by the secondary coil 14 is converted into DC power by the charging circuit 16, and the converted DC power is charged in the power storage device 2.

  Similar to the primary coil 5 described above, the secondary coil 14 is configured by winding an electric wire around a cylindrical magnetic core 18, and within the resin protective body 27 having a planar upper surface, the secondary coil 14. Is stored in a posture orthogonal to the upper surface of the protector 27.

As shown in FIGS. 9 and 10, the plurality of distance measuring units 4 are arranged on the same circumference coaxial with the axis A2 of the secondary coil 14 provided integrally with the distance measuring device Ma in the secondary side device E2. Has been placed.
As in the first embodiment, the distance measuring unit 4 uses various distance sensors such as an optical type and an ultrasonic type.

Specifically, the sensor units 4 s of the plurality of distance measuring units 4 are arranged on the upper surface of the protective body 27 of the secondary coil 14 so that each distance measuring direction is parallel to the axis A <b> 2 of the secondary coil 14. The secondary unit 28 is configured to be distributed at equal positions on the same circumference coaxial with the axis A <b> 2 of the secondary coil 14.
Incidentally, also in the second embodiment, as in the first embodiment, three distance measuring sections 4 are provided, and the sensor section 4s of the three distance measuring sections 4 is provided with the axis A2 of the secondary coil 14. Are distributed at positions separated by 120 ° in the central angle on the same circumference.
When the three distance measuring sections 4 are described by distinguishing the installation positions, the subscripts a, b, and c are added, and the A point distance measuring section 4a, the B point distance measuring section 4b, and the C point distance measuring apparatus. When the three sensor units are described with their installation positions being distinguished from each other, the subscripts a, b, and c are added to the A point sensor unit 4sa, the B point sensor unit 4sb, and C. It is described as a point sensor unit 4sc.

  Then, the position adjusting device 6 is placed on the bottom of the vehicle body in a posture in which the X-direction and the Y-direction face the horizontal direction with the Y-direction moving body facing downward and the vehicle body of the electric vehicle C being kept in the horizontal posture. Further, the secondary unit 28 is supported on the Y-direction movable body of the position adjusting device 6 in a posture in which the axis A2 of the secondary coil 14 faces in the vertical direction, and the secondary coil 14 and the plurality of the plurality of secondary coils 14 are arranged. The distance measuring unit 4 is configured so as to be freely movable along a horizontal plane. When the secondary unit 28 is supported by the position adjusting device 6, the secondary unit 28 is provided so as not to protrude downward from the bottom of the vehicle body, and the minimum ground height of the electric vehicle C is reduced. Has been avoided.

  That is, the secondary coil 14 that causes the secondary side device E2 to be electromagnetically coupled to the primary coil 5 to generate an induced electromotive force and charge the generated induced electromotive force to the power storage device 2 has its axis A2 connected to the primary coil 5. The distance measuring direction is set in a direction parallel to the axes A1 and A2 of the primary coil 5 and the secondary coil 14.

As shown in FIG. 11, as in the first embodiment, the secondary side control means 15 is configured using a main control means 21 that controls the electric vehicle C.
Similarly to the first embodiment, the electric vehicle C is provided with a storage capacity detection unit 22, a vehicle body tilt sensor 23, an active suspension 24, and the like.
As in the first embodiment, the tilt detection device that detects the tilt of the secondary device E2 with respect to the primary device E1 is configured by a vehicle body tilt sensor, and based on the detection information of the tilt detection device, the secondary device The inclination correction means R for correcting the inclination is composed of the main control means 21 and the active suspension 24.

Next, control operations of the primary side control means 7 and the secondary side control means 15 will be described.
When the distances to the distance measuring surface 3 measured by each of the three distance measuring units 4 are the same or substantially the same, the secondary side control means 15 is the primary side device E1 and the secondary side device E2. Is determined to be appropriate, and the determination means 25 is configured using the secondary side control means 15.
On the other hand, if the secondary side control means 15 determines that the relative positional relationship between the primary side device E1 and the secondary side device E2 is not appropriate based on the measurement information from the three distance measuring units 4, the secondary side control means 15 The operation of the position adjusting device 6 is controlled so that the side device E2 is in an appropriate position with respect to the primary side device E1.

The control operation of the secondary side control means 15 will be further described with reference to FIGS.
In the following description, the same reference numerals as those in the first embodiment are used.
The secondary-side control unit 15 has a relationship of the following (11) (hereinafter referred to as “11 point distance Da”, “B point distance Db”, “C point distance Dc” (hereinafter sometimes referred to as “three measurement distances”). In other words, when the distance to the distance measuring surface 3 is the same or substantially the same when measured by each of the three distance measuring units 4, 12 (a), the axis A1 of the primary coil 5 and the axis A2 of the secondary coil 14 are coaxial or substantially coaxial, and the secondary device E2 is in an appropriate position with respect to the primary device E1. It is determined that it is located at.
| Da−Db | ≦ α, | Da−Dc | ≦ α, | Db−Dc | ≦ α (11)
However, α is a positive constant set in the same manner as in the first embodiment.

In addition, when the measurement distances at the three points are not in an appropriate mutual relationship, the secondary side control unit 15 causes the axis A1 of the primary coil 5 and the axis A2 of the secondary coil 14 to deviate, and the secondary side device It is determined that E2 is not located at an appropriate position with respect to the primary device E1.
And when the secondary side control part 15 determines with the secondary side apparatus E2 not being located in an appropriate position with respect to the primary side apparatus E1, based on the measurement distance of 3 points | pieces, the secondary side apparatus E2 Is determined with respect to the primary side device E1 (ie, the direction in which the axis A2 of the secondary coil 14 is offset with respect to the axis A1 of the primary coil 5), and the secondary side device The position correction direction for positioning E2 at an appropriate position with respect to the primary side device E1 is set to a direction opposite to the shift direction by 180 °, and the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. Thus, the operation of the position adjusting device 6 is controlled so as to move the secondary device E2 (specifically, the secondary unit 28) in the position correction direction.
Incidentally, the secondary side control means 15 determines the mutual relationship between the three measurement distances after the position adjustment device 6 is operated to move the secondary side device E2 in the position correction direction by a preset set movement distance. This is repeated, and the secondary device E2 is moved so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship.

For example, when the mutual relationship between the three measurement distances is the following (12), the secondary-side control unit 15 moves the secondary-side device E2 in the Pa direction as shown in FIG. The position adjustment device 6 determines that the position is shifted, sets the position correction direction to the Px direction, and moves the secondary side device E2 in the Px direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. Control the operation of
Da-Db> α, Da-Dc> α, Db = Dc (12)

When the mutual relationship between the measurement distances of the three points is the following (13), the secondary side control unit 15 is configured such that the secondary side device E2 is in the Pa direction and the Py direction, as shown in FIG. And the position correction direction is set to a direction between the Px direction and the Pb direction (Pbx direction is illustrated in the figure) and 3 points are determined. The operation of the position adjusting device 6 is controlled so as to move the secondary device E2 in the direction between the Px direction and the Pb direction so that the mutual relationship of the measured distances becomes an appropriate mutual relationship.
Da-Db> α, Dc-Db> α, Da> Dc (13)

When the mutual relationship between the measurement distances at the three points is the following (14), the secondary-side control unit 15 causes the secondary-side device E2 to shift in the Py direction as shown in FIG. The position adjustment direction is set to the Pb direction, and the position adjustment device 6 is operated to move the secondary side device E2 in the Pb direction so that the mutual relationship between the three measurement distances is an appropriate mutual relationship. To control.
Da-Db> α, Dc-Db> α, Da = Dc (14)

As shown in FIG. 13 (e), the secondary side control unit 15 determines that the secondary side device E2 is in the Py direction and the Pc direction when the mutual relationship between the three measurement distances is as shown in (15) below. And the position correction direction is set to a direction between the Pb direction and the Pz direction (Pbz direction is illustrated in the figure), and three points are determined. The operation of the position adjusting device 6 is controlled so as to move the secondary device E2 in a direction between the Pb direction and the Pz direction so that the mutual relationship of the measurement distances is an appropriate mutual relationship.
Da-Db> α, Dc-Db> α, Dc> Da (15)

When the mutual relationship between the measurement distances at the three points is the following (16), the secondary side control unit 15 causes the secondary side device E2 to shift in the Pc direction as shown in FIG. The position adjustment direction is set to the Pz direction, and the position adjustment device 6 is operated so as to move the secondary side device E2 in the Pz direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. To control.
Dc-Da> α, Dc-Db> α, Da = Db (16)

When the mutual relationship between the measurement distances at the three points is the following (17), the secondary side control unit 15 causes the secondary side device E2 to shift in the Px direction as shown in FIG. The position adjustment direction is set to the Pa direction, and the position adjustment device 6 is operated to move the secondary side device E2 in the Pa direction so that the mutual relationship between the three measurement distances becomes an appropriate mutual relationship. To control.
Db-Da> α, Dc-Da> α, Db = Dc (17)

When the mutual relationship between the measurement distances at the three points is the following (18), the secondary-side control unit 15 causes the secondary-side device E2 to shift in the Pb direction as shown in (h) of FIG. The position adjustment direction is set to the Py direction, and the position adjustment device 6 is operated to move the secondary side device E2 in the Py direction so that the mutual relationship between the three measurement distances is an appropriate mutual relationship. To control.
Db-Da> α, Db-Dc> α, Da = Dc (18)

When the mutual relationship between the measurement distances at the three points is the following (19), the secondary-side control unit 15 causes the secondary-side device E2 to shift in the Pz direction as shown in (i) of FIG. The position adjustment direction is set to the Pc direction, and the position adjustment device 6 is operated to move the secondary side device E2 in the Pc direction so that the mutual relationship between the three measurement distances is an appropriate mutual relationship. To control.
Da-Dc> α, Db-Dc> α, Da = Db (19)

  Note that the secondary device E2 has a direction between the Pc direction and the Px direction, a direction between the Px direction and the Pb direction, a direction between the Pb direction and the Pz direction, and a direction between the Pz direction and the Pa direction. Since the control operation of the secondary-side control means 15 when there is a deviation in each of the directions can be understood based on the above description, the description and illustration are omitted.

Then, the procedure for charging the electrical storage apparatus 2 is demonstrated.
The electric vehicle is parked at the target parking position set in the same manner as in the first embodiment.
When the user instructs to start charging by a charging start switch (not shown) provided in the primary box 13, the primary side control means 7 transmits a charging start signal by the primary side communication unit 9.
When the secondary communication unit 17 receives the charge start signal, the secondary control unit 15 determines whether or not the power storage device 2 needs to be charged based on the detection information of the storage capacity detection unit 22. When it is determined that charging is necessary, the secondary side control means 15 determines whether or not tilt correction is necessary based on the detection information of the vehicle body tilt sensor 23. If the secondary control means 15 determines that tilt correction is necessary, the secondary control means 15 outputs an attitude correction command and, based on the detection information of the vehicle body tilt sensor 23, the active suspension 24 to level the vehicle body. And the secondary device E2 determines whether or not the secondary device E2 is positioned at an appropriate position with respect to the primary device E1 as described above. When the operation of the position adjustment device 6 is controlled so that the side device E2 is positioned at an appropriate position with respect to the primary device E1, and the secondary device E2 is determined to be positioned at an appropriate position with respect to the primary device E1, A charging permission signal is transmitted by the side communication unit 17.

When the primary side communication unit 9 receives the charge permission signal, the primary side control means 7 controls the power supply circuit 8 to start exciting the primary coil 5.
When the secondary-side control unit 15 transmits the charge permission signal by the secondary-side communication unit 17, the secondary-side control unit 15 controls the charging circuit 16 to charge the power storage device 2 with the induced electromotive force generated by the secondary coil 14, and then When it is determined that the storage capacity of the power storage device 2 has reached a predetermined maximum capacity based on the detection information of the storage capacity detection unit 22, the secondary communication unit 17 transmits a charge stop signal, and the power storage device 2 The charging circuit 16 is controlled to stop charging.
The primary side control means 7 controls the power supply circuit 8 to stop the excitation of the primary coil 5 when the primary side communication part 9 receives a charge stop signal.

[Another embodiment]
Next, another embodiment will be described.
(1) The distance measurement surface 3 has one axis of the primary coil 5 and the secondary coil 14 whose axis is provided integrally with the distance measurement device Mp on one of the primary side device E1 and the secondary side device E2. A primary coil 5 and a secondary coil provided integrally with the distance measuring device Ma on the other side of the primary side device E1 and the secondary side device E2 are provided so as to be parallel to the center in a different axis state. You may arrange | position on the same periphery of the shaft center parallel to the other shaft center of the coil 14 in a different-axis state.
As shown in FIGS. 15 and 16, this configuration is a contactless charging device that charges a power storage device (not shown) of a moving body V configured to automatically travel along a strip-shaped guide 31 on the floor surface. Especially suitable.
Incidentally, FIG. 15 and FIG. 16 illustrate the case where the distance measuring device Mp is provided in the secondary side device E2 and the distance measuring device Ma is provided in the primary side device E1.
In this case, since the relative positional relationship between the primary side device E1 and the secondary side device E2 in the direction orthogonal to the traveling direction of the moving body V can be maintained at an appropriate position, a plurality of distance measuring units The primary side device E1 is appropriate for the secondary side device E2 on the basis of the position adjustment device 32 that can move 4 in the direction parallel to the traveling direction of the moving body V and the measurement information by the plurality of distance measuring units 4. Control means (not shown) for controlling the operation of the position adjusting device 32 is provided so as to be positioned.

In other words, the secondary coil 14 is provided at a position corresponding to the side of the belt-like guide 31 at the bottom of the vehicle body of the moving body V so that its axis A2 is oriented in the vertical direction. Is provided so that the axis A3 passes through a point spaced from the axis A2 of the secondary coil 14 in a direction parallel to the traveling direction of the moving body V in the vertical direction.
A position adjusting device 32 is provided on the floor G on the side of the belt-shaped guide 31, and the primary coil 5 is placed on the position adjusting device 32 with the axis A 1 of the secondary coil 14 being oriented in the vertical direction. On the same circumference around the point A4 spaced from the axis A1 of the primary coil 5 in the direction parallel to the traveling direction of the moving body V. A plurality of distance measuring units 4 are arranged at equal intervals.

(2) The distance measuring surface 3 is not limited to the case where it is constituted by a part of a spherical surface as exemplified in the first and second embodiments.
For example, as shown in FIG. 17 (a), the ellipse is composed of a part of a spheroid surface that is rotated with its major axis as the axis of rotation, and the diameter of the maximum diameter portion on the distance measuring surface 3 The ratio of the length in the axial direction relative to may be configured to be larger than that in the case where the distance measuring surface 3 is configured by a part of a spherical surface (illustrated by a two-dot chain line).
Further, as shown in FIG. 17 (b), the ellipse is constituted by a part of a spheroid surface rotated with its short axis as the rotation axis, and the diameter of the maximum diameter portion in the distance measuring surface 3 is obtained. The ratio of the length in the axial direction relative to may be configured to be smaller than that in the case where the distance measuring surface 3 is configured by a part of a spherical surface (illustrated by a two-dot chain line).
Further, as shown in FIG. 17 (c), a conical surface may be used.
FIGS. 17A, 17B, and 17C illustrate the case where the surface to be measured 3 is configured in a concave shape, but each is configured in a convex shape with the same shape. May be.

(3) In each of the first and second embodiments described above, the primary communication unit 9 and the secondary communication unit are configured to enable communication between the primary device E1 and the secondary device E2. However, the primary communication unit 9 and the secondary communication unit 17 may be omitted.
In this case, the primary side device E1 is provided with a primary side charge start switch for instructing the start and stop of excitation, and the secondary side device E2 is provided with a secondary side charge start switch.
In the first embodiment, the primary side control means 7 and the secondary side control means 15 are configured as follows.
That is, when the primary side control means 7 is instructed to start excitation by the primary side charge start switch, the primary side device E1 makes the secondary side device E2 to the secondary side device E2 based on the measurement information of the plurality of distance measuring units 4. It is determined whether or not it is positioned at an appropriate position, and when it is not positioned at an appropriate position, the operation of the position adjusting device 6 is controlled so that the primary side device E1 is positioned at an appropriate position with respect to the secondary side device E2. When it is determined that the primary side device E1 is positioned at an appropriate position with respect to the secondary side device E2, the power supply circuit 8 is controlled to start excitation of the primary coil 5, and excitation is performed by the primary side charge start switch. Is configured to control the power supply circuit 8 to stop the excitation of the primary coil 5.
Further, when the secondary side control means 15 is instructed to start charging by the secondary side charging start switch, it determines whether or not the power storage device 2 needs to be charged based on the detection information of the storage capacity detection unit 22 and performs charging. On the basis of the detection information of the vehicle body tilt sensor 23, the operation of the active suspension 24 is controlled to level the vehicle body, and the induced electromotive force generated by the secondary coil 14 is determined. When the charging circuit 16 is controlled to charge the power storage device 2 and then it is determined that the power storage capacity of the power storage device 2 has reached a predetermined maximum capacity based on the detection information of the power storage capacity detection unit 22, the power storage device 2 is charged. The charging circuit 16 is controlled to stop the operation.

Moreover, in 2nd Embodiment, the primary side control means 7 and the secondary side control means 15 are comprised as follows.
That is, when the primary side control means 7 is instructed to start excitation by the primary side charge start switch, the power supply circuit 8 is controlled to start excitation of the primary coil 5, and the primary side charge start switch stops the excitation. When instructed, the power supply circuit 8 is controlled to stop the excitation of the primary coil 5.
When the secondary side control means 15 is instructed to start charging by the secondary side charging start switch, it is necessary to charge by determining whether or not the power storage device 2 needs to be charged based on the detection information of the storage capacity detecting unit 22. Is determined based on the detection information of the vehicle body tilt sensor 23, the operation of the active suspension 24 is controlled so as to make the posture of the vehicle body horizontal, and based on the measurement information of the plurality of distance measuring units 4, It is determined whether or not the secondary device E2 is positioned at an appropriate position with respect to the primary device E1, and if the secondary device E2 is not positioned at the proper position, the secondary device E2 is positioned at an appropriate position with respect to the primary device E1. When the operation of the position adjusting device 6 is controlled so as to be positioned at the second position, and the secondary device E2 is determined to be positioned at an appropriate position with respect to the primary device E1, the induced electromotive force generated by the secondary coil 14 is stored in the power storage device 2. Charging times to charge 16 and then determines that the storage capacity of the power storage device 2 has reached a predetermined maximum capacity based on the detection information of the storage capacity detection unit 22, the charging circuit 16 is stopped to stop charging the power storage device 2. Configure to control.

(4) When the distance measuring device Mp is provided in the secondary device E2 and the distance measuring device Ma is provided in the primary device E1, as in the first embodiment, the secondary device E2 Based on the position adjustment device that allows the distance measuring surface 3 to move along a surface orthogonal to the distance measuring direction and the measurement information obtained by the plurality of distance measuring units 4, the secondary side device E2 determines the primary side device E1. You may provide the control means which controls the action | operation of a position adjustment apparatus so that it may become an appropriate position.
In this case, it is necessary to provide a communication unit that communicates measurement information from the plurality of distance measuring units 4 provided in the primary device E1 to the control unit of the secondary device E2.

Further, as in the second embodiment, when the distance measuring device Mp is provided in the primary side device E1, and the distance measuring device Ma is provided in the secondary side device E2, the primary side device E1 has a distance to be measured. Based on the position adjustment device that makes the surface 3 movable along the surface orthogonal to the distance measuring direction and the measurement information by the plurality of distance measuring units 4, the primary device E1 is in an appropriate position with respect to the secondary device E2. Control means for controlling the operation of the position adjusting device may be provided.
In this case, it is necessary to provide a communication unit that communicates measurement information from the plurality of distance measuring units 4 provided in the secondary device E2 to the control unit of the primary device E1.

(5) In each of the first and second embodiments, the control means 7 and 15 for controlling the operation of the position adjustment device 6 based on the position adjustment device 6 and measurement information obtained by the plurality of distance measuring units 4. May be omitted.
In this case, based on the measurement information by the plurality of distance measuring units 4, information on the position adjustment direction for adjusting the parking position of the electric vehicle C so that the secondary side device E2 is in an appropriate position with respect to the primary side device E1, Alternatively, output means for outputting information on the position adjustment direction for adjusting the position of the primary side device E1 so that the primary side device E1 is in an appropriate position with respect to the secondary side device E2 is provided.
Incidentally, as the output means, a speaker that outputs the position adjustment direction by voice and a display device that displays and outputs the position adjustment direction can be provided.
And a user adjusts the parking position of the electric vehicle C so that the secondary side apparatus E2 may become an appropriate position with respect to the primary side apparatus E1, or the primary side apparatus E1 with respect to the secondary side apparatus E2. The position of the primary side apparatus E1 is adjusted so that it may become an appropriate position.

  In addition, when the distances to the distance measuring surfaces 3 measured by each of the plurality of distance measuring units 4 are the same or substantially the same, the relative positional relationship between the primary side device E1 and the secondary side device E2 is appropriate. If the determination unit 25 is provided to determine that the determination unit 25 determines that the information indicating the determination result by the determination unit 25 is output by the output unit, the user can select the primary side device based on the output information from the output unit. Since it is possible to accurately know that E1 and the secondary side device E2 are properly aligned, usability is improved.

(6) As an inclination detection device that detects the inclination of the secondary device E2 with respect to the primary device E1, and an inclination correction unit that corrects the inclination of the secondary device E2 based on detection information of the inclination detection device, Instead of the configuration illustrated in the first and second embodiments, the inclination detection device that detects the inclination of the secondary device E2 itself with respect to the primary device E1, and the detection information of the inclination detection device You may provide the inclination correction | amendment means which correct | amends the inclination of secondary side apparatus E2 itself.
Further, since the target parking position of the electric vehicle C for charging the power storage device 2 is normally set so that the vehicle body can be parked horizontally, the attitude of the secondary side device E2 is horizontal. Therefore, the inclination detecting device and the inclination correcting means can be omitted.

(7) The relative positional relationship when installing the primary side device E1 and the secondary side device E2 is the axis A1 of each of the primary coil 5 and the secondary coil 14 as in the first and second embodiments. , A2 is not limited to the relative positional relationship in which it faces the vertical direction.
For example, a relative positional relationship in which the axial centers A1 and A2 of the primary coil 5 and the secondary coil 14 face in the horizontal direction may be used.
In this case, a primary device E1 is provided on a structure (wall or the like) standing on the floor of the parking lot so that the axis A1 of the primary coil 5 faces in the horizontal direction, and the secondary device E2 is installed in the electric vehicle. The secondary side device E2 is provided on the side of the C vehicle body (for example, the front bumper or the rear bumper) so that the axis A2 of the secondary coil 14 faces the horizontal direction.

(8) The number of distance measuring units 4 is not limited to the three illustrated in the first and second embodiments, but may be four or more.
Further, as a distributed installation form on the same circumference of three or more distance measuring units 4, in the first and second embodiments described above, the positions are distributed equally or approximately equally. Although the form to install was illustrated, the form to disperse | distribute and install in the position disperse | distributed equally is also possible.
However, the primary side device for detecting the direction of deviation of the relative positional relationship between the primary side device E1 and the secondary side device E2 and making the relative positional relationship between the primary side device E1 and the secondary side device E2 appropriate. In order to set the moving direction of E1 or the secondary side device E2 with high accuracy, it is preferable to disperse and install the plurality of distance measuring units 4 at equally distributed or substantially equally distributed positions on the same circumference. .

(9) The present invention can be applied to non-contact charging devices for various uses other than the non-contact charging device for electric vehicles exemplified in the first and second embodiments.
For example, when applied to a non-contact charging device that charges the power storage device 2 mounted on the mobile body, the mobile body is not limited to the electric vehicle exemplified in the first and second embodiments. For example, an unmanned traveling vehicle or a mobile robot may be used.
In addition, the electric vehicle in the above embodiment includes both a motor and an internal combustion engine as driving force sources in addition to a pure electric vehicle having only an electric motor as a driving force source, and is configured to be able to charge the power storage device 2 with an external power source. Plug-in hybrid vehicles are also included.

  As described above, the contactless charging device that can accurately and quickly detect the relative positional relationship between the primary device E1 and the secondary device E2, and the distance measurement of the positional relationship detection device for the contactless charging device. An apparatus and a distance measuring device can be provided.

DESCRIPTION OF SYMBOLS 1 Charging power supply 2 Power storage device 3 Distance measuring surface 4 Distance measuring unit 5 Primary coil 6 Position adjusting device 7, 15 Control means 14 Secondary coil 23 Inclination detecting device 25 Judging means A1 Axis of primary coil A2 Secondary coil Axis C Moving object E1 Primary side device E2 Secondary side device M Positional relationship detection device Ma Distance measuring device Mp Distance measuring device R Inclination correction means

Claims (13)

A contactless charging device including a positional relationship detection device that detects a relative positional relationship between a primary device connected to a power source for charging and a secondary device connected to a power storage device,
The positional relationship detection device includes a ranging device provided in one of the primary device and the secondary device, and a ranging device provided in the other of the primary device and the secondary device. Have
The distance measuring device has a distance measuring surface in which a transverse shape on a surface orthogonal to a predetermined distance measuring direction is circular and the diameter thereof gradually decreases or gradually increases toward one side of the distance measuring direction. Prepare to face the distance device,
The distance measuring device has a plurality of three or more distance measuring units that measure the distance to the surface to be measured in the distance measuring direction in a distributed manner on the same circumference in a plane orthogonal to the distance measuring direction. A contactless charging device. The primary device is provided with a primary coil that is excited by the power source for charging,
A secondary coil that is electromagnetically coupled to the primary coil to generate an induced electromotive force in the secondary device and charges the generated induced electromotive force to the power storage device has its axis as the axis of the primary coil. Provided in parallel,
The contactless charging apparatus according to claim 1, wherein the distance measuring direction is set in a direction parallel to the axis of the primary coil and the secondary coil. The distance measuring surface is provided coaxially with one axis of the primary coil and the secondary coil provided integrally with the distance measuring device on one of the primary side device and the secondary side device,
The plurality of distance measuring sections are the same circumference coaxial with the other axial center of the primary coil and the secondary coil provided integrally with the distance measuring device on the other of the primary side device and the secondary side device. The contactless charging device according to claim 2, which is disposed on the top.   The relative positional relationship between the primary side device and the secondary side device is appropriate when the distances to the distance measuring surfaces measured by each of the plurality of distance measuring units are the same or substantially the same. The contactless charging apparatus according to any one of claims 1 to 3, further comprising determination means for determining The distance measuring device is provided in the secondary side device,
The distance measuring device is provided in the primary side device;
Based on the position adjustment device that enables the primary side device to move the plurality of distance measuring units along a surface orthogonal to the distance measuring direction, and the measurement information by the plurality of distance measuring units, the primary side device. 5. The contactless charging apparatus according to claim 1, further comprising: a control unit that controls the operation of the position adjustment device so that the position adjustment device is in an appropriate position with respect to the secondary side device.   The contactless charging apparatus according to claim 5, wherein the surface to be measured is configured in a concave shape. The distance measuring device is provided in the primary side device;
The distance measuring device is provided in the secondary side device,
Based on the position adjustment device that enables the secondary side device to move the plurality of distance measuring units along a plane orthogonal to the distance measuring direction, and the secondary information based on the measurement information by the plurality of distance measuring units. 5. The contactless charging device according to claim 1, further comprising: a control unit configured to control the operation of the position adjustment device so that the side device is in an appropriate position with respect to the primary side device.   The contactless charging apparatus according to claim 7, wherein the distance measuring surface is formed in a convex shape.   The contactless charging device according to any one of claims 1 to 8, wherein the plurality of distance measuring units are provided in a distributed manner at equal or substantially equal positions on the circumference.   The secondary device is mounted on a moving body, detects an inclination of the secondary device relative to the primary device, and the secondary device based on detection information of the tilt detector The contactless charging apparatus according to claim 1, further comprising an inclination correction unit that corrects the inclination of the battery.   The ratio of the length in the axial direction to the diameter of the largest diameter portion on the distance measuring surface is configured to be larger than that in the case where the distance measuring surface is constituted by a part of a spherical surface. The contactless charging apparatus according to any one of 1 to 10. A distance measuring device of a positional relationship detection device that detects a relative positional relationship between a primary device connected to a power supply for charging and a secondary device connected to a power storage device,
When the distance measuring device is provided in one of the primary side device and the secondary side device, the distance measuring device is provided on the other of the primary side device and the secondary side device and includes a predetermined distance measuring surface. Configured to detect the relative positional relationship in cooperation with an apparatus;
Positional relationship including three or more distance measuring units that measure the distance to the surface to be measured in a predetermined distance measuring direction distributed on the same circumference in a plane orthogonal to the distance measuring direction Ranging device for detection device. A distance measuring device of a positional relationship detection device that detects a relative positional relationship between a primary device connected to a charging power source and a secondary device connected to a power storage device,
The relative positional relationship is detected in cooperation with a predetermined distance measuring device provided in one of the primary side device and the secondary side device and provided in the other of the primary side device and the secondary side device. Composed of
A distance measuring surface whose transverse shape on a surface orthogonal to a predetermined distance measuring direction is circular and whose diameter gradually decreases or increases toward one side in the distance measuring direction is opposed to the distance measuring device. A distance measuring device of a positional relationship detection device provided.

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