JP6512024B2 - Contactless power supply device and contactless power transmission device - Google Patents

Description

  The present invention relates to a noncontact power feeding device and a noncontact power transmission device.

  In recent years, a charging system has been proposed for charging a storage battery mounted on a moving object by non-contact power transmission technology of non-contact power transmission from an external power source using an electromagnetic induction method or a magnetic resonance method. For example, by supplying electric energy from an external power supply to a feeding coil installed in a parking area of a parking lot, the receiving coil installed in a vehicle such as an electric car generates electric energy by electromagnetic induction or magnetic field resonance, and receives electricity. There is a charging system which stores electric energy from a coil in a storage battery and charges it. Also, in the industrial equipment field, by supplying electric energy from the external power supply to the feeding coil installed in the feeding area, the receiving coil installed in a moving object such as a transportation device for factories is based on electromagnetic induction or magnetic resonance. There is a charging system that generates electrical energy and stores the electrical energy from the power receiving coil in a storage battery for charging.

  In such a charging system, if foreign matter such as metal is present between the feeding coil and the receiving coil, the power transmission efficiency may be reduced due to the influence of foreign matter such as metal, and foreign matter is removed. Development requirements are rising.

  In response to such a request, Patent Document 1 discloses a foreign matter removing mechanism for removing foreign matter on a feeding coil that performs non-contact power feeding to a parked moving vehicle from below, which is pushed by the moving vehicle and moves horizontally There has been proposed a device comprising a movable part and a movable cleaning part connected to the movable part and moving along the upper surface of the feeding coil in conjunction with the movement of the movable part.

JP, 2014-27813, A

  However, in the technique disclosed in Patent Document 1, since the movable cleaning unit moves horizontally on the guide rail, the guide rail and the movable cleaning unit installed on the ground require straightness. Therefore, there existed a subject that parallelism with the guide rail in the approach to the electric power feeding area of the mobile body which mounts a non-contact electric power reception apparatus needed.

  The present invention has been made in view of the above problems, and provides a non-contact power feeding device and a non-contact power transmission device capable of reliably removing foreign matter even if the accuracy of the approach angle of the moving body to the feeding area is poor. The purpose is

  A non-contact power feeding device according to the present invention includes a power feeding unit disposed in a power feeding area, and a foreign matter removing unit that removes foreign matter from above the feeding unit. The foreign matter removing unit moves in response to a pressing force. A pair of receiving portions, a connecting portion connecting and supporting the pair of receiving portions, a sweeping portion fixed to the connecting portion and wiping the upper surface of the power feeding portion, a connecting support portion supporting the connecting portion, and a connecting support portion The sweep-out portion includes a guide rail portion for guiding and a rotating support portion connected to the guide rail portion and rotatably supporting the pair of receiving portions in the in-plane direction via the guide rail portion. The apparatus is characterized in that it moves on the feeding unit in conjunction with the movement of the receiving unit.

  According to the present invention, the foreign matter removing portion is fixed to the pair of receiving portions moving in response to the pressing force, the connecting portion connecting and supporting the pair of receiving portions, and the connecting portion, and the sweeping portion wiping the upper surface of the power feeding portion And a connection support portion for supporting the connection portion, a guide rail portion for linearly guiding the connection support portion, and the guide rail portion, and the pair of receiving portions can be rotated in the in-plane direction via the guide rail portion And the sweep-out unit moves on the feeding unit in conjunction with the movement of the pair of receiving units. Therefore, since the pair of receivers moves by the pressing force with the rotating support as a fulcrum, the pair of receivers can be moved even if the approach angle of the movable body with respect to the pair of receivers varies somewhat. The foreign matter can be reliably removed by the sweep-out part moving on the feeding part in conjunction with the movement of the part. As a result, foreign matter can be reliably removed even if the accuracy of the approach angle of the moving body to the feed area is poor. That is, when the movable body enters the feeding area, foreign matter can be removed even if it can not enter parallel to the guide rail portion of the foreign matter removing part.

  Preferably, the foreign matter removing portion may further include an extendable spring portion disposed on the guide rail portion and coupled to the connection support portion. In this case, when the pair of receiving portions ceases to receive the movement driving force of the moving body when the moving body exits from the power feeding area, the expansion and contraction of the spring portion connected to the connection supporting portion connecting and supporting the pair of movable portion receiving portions By the force, the connection support and the pair of receivers are set to automatically return to the initial state along the guide rail. That is, since the foreign matter removing unit returns to the initial state when the feeding operation to the moving body is finished and the moving body leaves the feeding area, the sweeping out portion is performed when the moving body enters the feeding area again and performs the feeding operation. It is possible to start the foreign matter removing operation of cleaning the upper surface of the power feeding unit. In addition, since the foreign matter removing unit is automatically returned to the initial state by the restoring force of the spring portion, it is possible to reduce the number of driving devices such as an actuator for returning the foreign matter removing unit to the initial state.

  Preferably, the heat insulating and heat insulating sheet unit is supported by the connecting unit and covers the upper surface of the power feeding unit, and a roll unit that winds the heat insulating and heat insulating sheet unit in conjunction with the movement of the receiving unit. In this case, the upper surface of the feeding portion is covered by the heat insulating and insulating sheet portion before the moving body enters the feeding area. When the non-contact power feeding device is disposed in a state of being exposed to the external environment, it is possible to prevent the performance deterioration of the components due to the temperature rise in the housing of the power feeding unit due to sunlight. Further, since the heat insulating and heat insulating sheet portion moves in conjunction with the movement of the receiving portion, it is possible to reduce the driving device such as an actuator for winding and unwinding the heat insulating and heat insulating sheet portion.

  A non-contact power transmission device according to the present invention includes the non-contact power feeding device and the non-contact power reception device. According to the present invention, it is possible to provide a non-contact power transmission device capable of reliably removing foreign matter even if the accuracy of the approach angle of the moving body to the feed area is poor.

  According to the present invention, it is possible to provide a non-contact power feeding device and a non-contact power transmission device capable of reliably removing foreign matter even if the accuracy of the approach angle of the moving body into the power feeding area is poor.

It is a model block diagram which shows the contactless energy transfer apparatus which concerns on 1st Embodiment of this invention with a load. It is the perspective view which showed typically the structure of the foreign material removal part of the non-contact electric power supply apparatus in the non-contact electric power transmission apparatus which concerns on 1st Embodiment of this invention, and the electric power feeding part. In the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention, it is a schematic view showing a mechanical operation of the foreign matter removing portion at the start of moving object entry. In the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention, it is a schematic view showing the mechanical operation of the foreign matter removing portion during the approach of the moving body. In the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention, it is a schematic view showing a mechanical operation of the foreign matter removing portion at the time of the foreign matter removing operation. It is the top view which showed typically the structure of the foreign material removal part and the electric power feeding part of the non-contact electric power supply in the non-contact electric power transmission apparatus which concerns on 2nd Embodiment of this invention. It is the top view which showed typically the heat-insulation heat insulation sheet | seat part of the non-contact electric power supply in the non-contact electric power transmission apparatus which concerns on 3rd Embodiment of this invention. It is the side view which showed typically the heat-insulation heat insulation sheet | seat part and roll part of the non-contact electric power supply in the non-contact electric power transmission apparatus which concerns on 3rd Embodiment of this invention.

  A mode (embodiment) for carrying out the present invention will be described in detail with reference to the drawings. In the description, the same elements or elements having the same function will be denoted by the same reference symbols, without redundant description.

First Embodiment
First, with reference to FIG. 1, the whole structure of the non-contact electric power transmission apparatus A which concerns on 1st Embodiment of this invention is demonstrated. FIG. 1 is a schematic configuration view showing a contactless power transmission device according to a first embodiment of the present invention together with a load.

  As shown in FIG. 1, the non-contact power transmission device A includes a non-contact power feeding device A1 and a non-contact power reception device A2. The non-contact power transmission device A according to the present embodiment is applied to a charging facility for a mobile. Here, as a mobile body to which the contactless power transmission device A is applied, an electric vehicle (BEV: Battery Electric Vehicle), a hybrid vehicle (PHEV: Plug-in Hybrid Electric Vehicle), etc. using the power of a secondary battery Transport devices for vehicles, factories, transport devices for civil engineering or construction, etc. may be mentioned.

  As shown in FIG. 1, the non-contact power feeding device A1 includes a power supply 10, an inverter 20, a power feeding unit 30, and a foreign matter removing unit 40. As shown in FIG. 1, the non-contact power reception device A2 includes a power reception unit 50 and a rectification unit 60. In addition, non-contact electric power supply apparatus A1 is mounted in the electric power feeding installation installed in an electric power feeding area, and non-contact power reception apparatus A2 is mounted in a mobile body.

  The power supply 10 supplies DC power to the inverter 20 described later. The power source 10 is not particularly limited as long as it outputs DC power, and is a DC power source obtained by rectifying and smoothing a commercial AC power source, a secondary battery, a solar DC power source, or a switching power source such as a switching converter Etc.

  The inverter 20 has a function of converting input DC power supplied from the power supply 10 into AC power. In the present embodiment, the inverter 20 converts input DC power supplied from the power supply 10 into AC power, and supplies the AC power to the power supply unit 30 described later. The inverter 20 is configured of a switching circuit in which a plurality of switching elements are bridge-connected. As a switching element which comprises this switching circuit, elements, such as MOS-FET (Metal Oxide Semiconductor-Field Effect Transistor) and IGBT (Insulated Gate Bipolar Transistor), are mentioned, for example.

  The power feeding unit 30 has a function of transmitting the AC power supplied from the inverter 20 to a power receiving unit 50 described later. The feed unit 30 is formed of a feed coil (not shown) in which a litz wire such as copper or aluminum is wound. The feeding coil may be a coil having a spiral structure in which a litz wire is wound flatly, or a coil having a solenoid structure in which a litz wire is spirally wound around a rod-like or plate-like magnetic body. . The number of turns of the feeding coil is appropriately set based on the distance between the power feeding unit 50 described later and the desired power transmission efficiency. Note that the feeding unit 30 may be configured of only a feeding coil, and may include a capacitor (not shown) connected in series or in parallel to the feeding coil.

  The foreign matter removing unit 40 has a function of removing foreign matter from above the power feeding unit 30. The specific configurations of the power feeding unit 30 and the foreign matter removing unit 40 will be described later.

  The power reception unit 50 has a function of receiving the AC power transmitted from the power supply unit 30. The power receiving unit 50 is configured of a power receiving coil (not shown) in which a litz wire such as copper or aluminum is wound. The receiving coil may be a coil having a spiral structure in which a litz wire is wound in a flat shape, or may be a coil having a solenoid structure in which a litz wire is spirally wound around a rod-like or plate-like magnetic body. . The number of turns of the power receiving coil is appropriately set based on the distance from the power feeding unit 30, the desired power transmission efficiency, and the like. Note that the power receiving unit 50 may be configured of only a power receiving coil, and may include a capacitor (not shown) connected in series or in parallel to the power receiving coil. The power reception unit 50 configured as described above is mounted on a part of the mobile unit, and is mounted on the lower part of the mobile unit in the present embodiment.

  The rectifying unit 60 has a function of rectifying the AC power received by the power receiving unit 50 into DC power. As the rectifying unit 60, a conversion circuit provided with a full-wave rectifying function using a diode bridge and a power smoothing function using a capacitor and a three-terminal regulator can be mentioned. The DC power rectified by the rectifying unit 60 is output to the load B. Here, examples of the load B include a secondary battery and a rotating machine provided in the moving body. If the load B is an AC rotating machine, it is necessary to add an inverter (not shown) between the rectifying unit 60 of the non-contact power reception device A2 and the load B to supply AC power to the AC rotating machine. There is.

  By providing such a configuration, the contactless power transmission device A, in which electric power is transmitted contactlessly, is provided by the power supply unit 30 of the contactless power supply device A1 facing the power reception unit 50 of the contactless power reception device A2. To be realized.

  Next, with reference to FIG. 2, configurations of the power feeding unit 30 and the foreign matter removing unit 40 of the non-contact power feeding device A1 in the non-contact power transmission device A according to the first embodiment of the present invention will be described. FIG. 2: is the perspective view which showed typically the structure of the foreign material removal part of the non-contact electric power supply apparatus in the non-contact electric power transmission apparatus which concerns on 1st Embodiment of this invention, and an electric power feeding part. In FIG. 2, the power supply 10 and the inverter 20 are omitted for the convenience of description.

  The feeding unit 30 is installed in a feeding area where a moving body enters and a feeding operation is performed. For example, when the power receiving unit 50 is mounted substantially at the lower center of the moving body, the power feeding unit 30 is disposed substantially at the center of the power feeding area, and when the power receiving unit 50 is mounted at the lower front or rear lower portion of the movable body The feeding unit 30 is installed on the opposite side to the entry start side of the mobile object in the feeding area. The power supply unit 30 is packaged in a housing having an insulating property, and the external shape thereof includes various shapes such as a rectangular parallelepiped shape, a cubic shape, and a cylindrical shape. In addition, when the feed unit 30 is formed in a rectangular parallelepiped shape or a cubic shape, it may be configured to round each corner. When each corner has a roundness, the contact resistance between the power supply unit 30 and the sweep-out portion 43 described later can be reduced, so that the wear of the sweep-out portion 43 can be suppressed. Here, the power feeding area divides the area where the power feeding operation is performed on the movable body on which the non-contact power reception device A2 is mounted, and has a rectangular shape.

  As shown in FIG. 2, the foreign matter removing portion 40 includes a pair of receiving portions 41, a connecting portion 42, a sweeping out portion 43, a connecting support portion 44, a guide rail portion 45, and a rotating support portion 46. Have. Hereinafter, the configuration of each part will be described with reference to FIG.

  The pair of receiving portions 41 is arranged to be in contact with part of the moving body when the moving body enters into the feed area. The pair of receiving portions 41 is configured to move in response to the pressing force. For example, in the case where the moving body is a vehicle such as an electric car or a hybrid car, the pair of receiving portions 41 is disposed to be in contact with the tire of the vehicle, and moves by the pressing force received from the tire. On the other hand, in the case where the movable body is a transport device for a factory, the pair of receiving portions 41 are arranged to be in contact with a portion of the device body of the transport device, and move by pressing force received from a portion of the device body. Become. Specifically, in the feeding area, the pair of receiving parts 41 is disposed on both sides of the feeding part 30 in a direction (a direction in which the long sides of the feeding area oppose each other) substantially orthogonal to the approach direction of the moving object. It consists of two receivers. The pair of receiving portions 41 is disposed on the side where the moving body starts to enter rather than the feeding unit 30 in the feeding area when the moving body has not entered the feeding area. Then, when the moving object enters the feeding area and performs an entering operation to the feeding area in a state in which a part of the moving object is in contact with the pair of receiving parts 41, the pair of receiving parts 41 enter the moving object It will move in conjunction with the At this time, the pair of receiving portions 41 move along a direction from one side edge (the entry start side of the moving body) of the feeding portion 30 to the other side edge (the side opposite to the entry start side of the moving body) Do. In the present embodiment, each receiving portion of the pair of receiving portions 41 is formed of two cylindrical members, but is not limited to this, and from the viewpoint of being able to contact a part of the moving body in a wide area And U-shaped members are preferable. Furthermore, the installation height of the pair of receiving portions 41 may be configured to coincide with the height of a part of the moving body that comes in contact with the pair of receiving portions 41. In this case, the pair of receiving portions 41 can easily receive the pressing force from a part of the moving body. The pair of receiving portions 41 configured as described above is connected to a connecting portion 42 described later.

  The connecting portion 42 connects and supports the pair of receiving portions 41. Specifically, the connection portion 42 is formed of a rod-like member extending in a direction substantially orthogonal to the approach direction of the moving body. In this connection portion 42, one receiving portion of the pair of receiving portions 41 is connected to the surface on the approach start side of the moving body near one end, and the surface on the approach start side of the moving body near the other end The other receiving portion of the pair of receiving portions 41 is connected to each other.

  The sweep-out unit 43 has a function of wiping the upper surface of the power supply unit 30. Specifically, the sweep-out portion 43 is installed at a vertically lower portion near the central portion of the connecting portion 42, and is disposed such that the tip of the vertically lower portion has a height at which the upper end of the feed portion 30 contacts. In the present embodiment, the width (the length in the horizontal direction) of the sweep-out portion 43 in the direction orthogonal to the approach direction of the moving body is the same as the width in the direction orthogonal to the approach direction of the moving body However, the present invention is not limited to this, and may be configured to be larger than the width of the feeding unit 30 in the direction orthogonal to the approach direction of the moving object. For example, when the length in the horizontal direction of the sweep-out portion 43 is larger than the width of the feed portion 30 in the direction orthogonal to the approach direction of the moving body, the sweep-out portion located outside the feed portion 30 The tip of 43 vertically below may be configured to have a height that contacts the feeding area. In this case, it is possible to wipe the upper surface of the feeding unit 30 by the sweep-out unit 43 and wipe the feeding area on the periphery of the feeding unit 30. Foreign matter can also be removed. Moreover, as a shape of the sweep-out part 43, the brush shape which bundled the fiber etc. may be sufficient, and wiper shapes, such as rubber | gum, may be sufficient. The sweep-out unit 43 configured in this manner is interlocked with the movement of the connecting unit 42, and from one side edge (the entry start side of the moving body) of the feeding unit 30 to the other side edge (the entry start side of the moving body) Move along the opposite direction). That is, the sweep-out unit 43 moves on the feeding unit 30 in conjunction with the movement of the pair of receiving units 41. Thus, foreign matter removal on the power supply unit 30 is performed.

  The connection support portion 44 supports the connection portion 42. Specifically, the connection support portion 44 is constituted by a pair of connection support portions connected to the vertically lower portions on both sides where the sweep-out portion 43 of the connection portion 42 is installed, and via the connection portion 42 and the connection portion 42 The pair of receiving portions 41 and the sweep-out portion 43 are supported vertically upward.

  The guide rail portion 45 has a function of linearly guiding the connection support portion 44. In the present embodiment, the guide rail portion 45 is composed of a pair of guide rails provided with a concave groove extending in a direction orthogonal to the extending direction of the connecting portion 42. That is, by fitting the vertically lower end of the connection support portion 44 into the groove of the guide rail portion 45, the connection support portion 44 can move linearly along the extending direction of the guide rail of the guide rail portion 45. Therefore, when the pair of receiving portions 41 receives a pressing force from a part of the moving body and moves, the connecting portion 42, the sweep-out portion 43, and the connecting support portion 44 respectively extend along the extending direction of the guide rails of the guide rail 45 It will move. Further, in the present embodiment, the guide rail portion 45 includes a guide rail connecting shaft 451 connecting the pair of guide rails, and has a frame shape as a whole. Furthermore, in the present embodiment, the wheel portion 452 supporting the guide rail portion 45 is provided, and the guide rail portion 45 is configured to be able to rotationally move in the in-plane direction.

  The rotating support 46 is a substantially cylindrical support extending vertically upward from the surface of the feeding area. In the present embodiment, the rotary support 46 is fitted in and connected to the bearing of the guide rail connecting shaft 451 on the entry start side of the movable body of the guide rail 45. The rotating support 46 is configured to be rotatable in an in-plane direction (horizontal direction with the ground). Therefore, the rotary support 46 rotatably supports the connected guide rail 45 in the in-plane direction, and can rotate the pair of receiving portions 41 in the in-plane direction via the guide rail 45. I support it. In addition, the rotating support column 46 may be configured to be able to adjust the installation height of the guide rail 45. In this case, the tip end of the sweeping portion 43 can be maintained at a height at which the upper surface of the feeding portion 30 can be cleaned, via the guide rail 45, the connection support 44, and the connection 42.

  Subsequently, with reference to FIG. 3, the mechanical operation of the foreign object removing unit 40 in the non-contact power feeding device A1 in the non-contact power transmission device A according to the first embodiment of the present invention will be described. FIG. 3a is a schematic view showing the mechanical operation of the foreign matter removing unit at the start of entry of a moving object in the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention. FIG. 3 b is a schematic view showing the mechanical operation of the foreign matter removing unit during the approach of the moving object in the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention. FIG. 3 c is a schematic view showing the mechanical operation of the foreign matter removing unit at the time of the foreign matter removing operation in the non-contact power feeding device of the non-contact power transmission device according to the first embodiment of the present invention. In addition, in this example, it demonstrates using the example which a vehicle approachs diagonally with respect to the opposing direction of the short sides of a feed area. When the vehicle does not enter the feeding area, the connecting part 42 is in parallel with the opposing direction of the long sides of the feeding area such that the pair of receiving parts 41 faces the vehicle entry start side (initial arrangement) . Subsequently, when the vehicle obliquely enters the feeding area, as shown in FIG. 3A, one of the rear tires (or front wheels) of the vehicle (right side in the figure) receives the pair of receiving portions 41. Contact the department. Subsequently, when the movement of the vehicle into the power feeding area proceeds, one of the receivers receives pressure from one of the tires of the vehicle. Then, when one of the receiving portions receives a pressing force, as shown in FIG. 3b, the pair of receiving portions 41 rotate about the rotating support 46 (clockwise in this example), and the other receiving portion is the vehicle Contact the other tire (left side in the figure). Accordingly, two receiving portions of the pair of receiving portions 41 are in contact with the tire of the vehicle. At this time, the connecting portion 42, the sweep-out portion 43, the connecting support portion 44, and the guide rail portion 45 also rotate around the rotating support portion 46. That is, the foreign matter removing unit 40 functions to calibrate the deviation of the approach angle of the vehicle. Subsequently, when the movement of the vehicle into the power feeding area further progresses, the pair of receiving portions 41 receives pressure from the tire of the vehicle, and moves in the direction of the vehicle entering. In conjunction with the movement of the pair of receiving portions 41, the connection support portion 44 linearly moves along the extending direction of the guide rail portion 45 via the connecting portion 42 connecting the pair of receiving portions 41. At this time, the sweep-out unit 43 moves in conjunction with the movement of the connecting unit 42 along the direction from the vehicle approach start side of the power supply unit 30 to the opposite side to the vehicle approach start side as shown in FIG. The sweeping unit 43 wipes the entire upper surface of the power supply unit 30 to complete the removal of foreign matter and the entry operation of the vehicle into the power supply area.

  As described above, in the non-contact power transmission device A according to the present embodiment, the non-contact power feeding device A1 removes the foreign matter from above the feeding portion 30 provided in the feeding area and the feeding portion 30. 40, and the foreign matter removing unit 40 is fixed to the pair of receiving portions 41 that move by receiving a pressing force, the connecting portion 42 that connects and supports the pair of receiving portions 41, and the connecting portion 42; The guide rail portion 45 is connected to the sweeping portion 43 which wipes the upper surface, the connection support portion 44 which supports the connection portion 42, the guide rail portion 45 which linearly guides the connection support portion 44, and the guide rail portion 45 And the sweep-out portion 43 moves on the feeding portion 30 in conjunction with the movement of the pair of receiving portions 41. The rotating support portion 46 rotatably supports the pair of receiving portions 41 in the in-plane direction. doing. Therefore, the pair of receiving portions 41 is moved by the pressing force with the rotating support portion 46 as the fulcrum, so that the pair of receiving portions 41 can be moved even if the entering angle of the moving body with respect to the pair of receiving portions 41 is somewhat dispersed. The sweeping-out portion 43 moving on the power feeding portion 30 in conjunction with the movement of the pair of receiving portions 41 can reliably remove foreign matter. As a result, foreign matter can be reliably removed even if the accuracy of the approach angle to the feed area is poor.

Second Embodiment
Then, with reference to FIG. 4, the structure of the foreign material removal part 140 of the non-contact electric power supply in the non-contact electric power transmission apparatus which concerns on 2nd Embodiment of this invention is demonstrated. FIG. 4: is the top view which showed typically the structure of the foreign material removal part of the non-contact electric power supply apparatus in the non-contact electric power transmission apparatus which concerns on 2nd Embodiment of this invention, and an electric power feeding part. The non-contact power transmission device according to the second embodiment includes a non-contact power feeding device A1 and a non-contact power reception device A2. The configurations of the power supply 10, the inverter 20, and the power supply unit 30 of the noncontact power feeding device A1 and the configuration of the noncontact power reception device A2 are the same as those of the noncontact power transmission device A according to the first embodiment. The non-contact power feeding device A1 in the non-contact power transmission device according to the second embodiment is different from the first embodiment in that a foreign matter removing unit 140 is provided instead of the foreign matter removing unit 40. Hereinafter, differences from the first embodiment will be mainly described.

  As illustrated in FIG. 4, the foreign matter removing unit 140 includes a pair of receiving units 41, a connecting unit 42, a sweep-out unit 43, a connecting support unit 44, a guide rail unit 45, a rotating support unit 46, and a spring. And a part 147. The configuration of the pair of receiving portions 41, the connecting portion 42, the sweeping out portion 43, the connecting support portion 44, the guide rail portion 45, and the rotating support portion 46 is the same as that of the foreign matter removing portion 40 according to the first embodiment.

  The spring portion 147 is disposed on the guide rail portion 45. Specifically, the spring portion 147 is provided in the groove of the guide rail of the guide rail portion 45, one end thereof is connected to the connection support portion 44, and the other end is connected to the guide rail. The spring portion 147 is formed of a spring that can extend and contract along the extension direction of the guide rail of the guide rail portion 45. Accordingly, the spring portion 147 expands and contracts in conjunction with the movement of the connection support portion 44. That is, the spring portion 147 is configured such that when the pair of receiving portions 41 receives a pressing force and moves, the spring is compressed by the interlockingly moving support portion 44 that moves in an interlocking manner. Here, the expansion and contraction force of the spring portion 147 is set to be weaker than the pressing force by the moving body. Here, it is preferable to dispose an axis extending along the extending direction of the guide rail portion 45 in the groove of the guide rail portion 45 and to arrange the spring portion 147 around this axis. In this case, the spring portion 147 can be prevented from jumping out of the guide rail of the guide rail portion 45.

  As described above, in the non-contact power transmission device according to the present embodiment, an expandable spring in which the foreign matter removing unit 140 of the non-contact power feeding device A1 is disposed on the guide rail 45 and connected to the connection support 44 It further comprises a part 147. Therefore, when the pair of receiving portions 41 ceases to receive the movement driving force of the moving body at the time of leaving the moving body from the power feeding area, the spring portion 147 connected to the connection support portion 44 connecting and supporting the pair of receiving portions 41. The connection support portion 44 and the pair of receiving portions 41 are set to automatically return to the initial state along the guide rail portion 45 by the expansion and contraction force. That is, since the foreign matter removing unit 140 returns to the initial state when the feeding operation to the moving body is finished and the moving body leaves the feeding area, the moving body moves into the feeding area again and performs the feeding operation. A state in which foreign matter removing operation in which the part 43 cleans the upper surface of the power feeding part can be started. In addition, since the foreign matter removing unit 140 automatically returns to the initial state by the restoring force of the spring portion 147, it is possible to reduce the number of driving devices such as an actuator for returning the foreign matter removing unit 140 to the initial state.

Third Embodiment
Subsequently, the configuration of the non-contact power feeding device in the non-contact power transmission device according to the third embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5: is the top view which showed typically the heat-insulation heat insulation sheet | seat part of the non-contact electric power supply apparatus in the non-contact electric power transmission apparatus which concerns on 3rd Embodiment of this invention. FIG. 6 is a side view schematically showing a heat insulating and insulating sheet portion and a roll portion of the noncontact power feeding device in the noncontact power transmission device according to the third embodiment of the present invention.

  The non-contact power transmission device according to the third embodiment includes a non-contact power feeding device A1 and a non-contact power receiving device A2. The configurations of the power supply 10, the inverter 20, and the power supply unit 30 of the noncontact power feeding device A1 and the configuration of the noncontact power reception device A2 are the same as those of the noncontact power transmission device A according to the first embodiment. Moreover, the structure of the foreign material removal part 140 of non-contact electric power supply apparatus A1 is the same as that of the non-contact electric power transmission apparatus which concerns on 2nd Embodiment. The non-contact power feeding device A1 of the non-contact power transmission device according to the third embodiment is different from the second embodiment in that the non-contact power feeding device A1 further includes a heat shielding and heat insulating sheet portion 270 and a roll portion 271. Hereinafter, differences from the second embodiment will be mainly described.

  The heat-insulation thermal insulation sheet part 270 is comprised from the sheet-like member which can cover the upper surface of the electric power feeding part 30. FIG. The heat insulating and heat insulating sheet portion 270 functions to thermally or thermally insulate thermal energy such as sunlight to suppress the influence of heat on the power feeding portion 30. The heat insulating and heat insulating sheet portion 270 is configured to cover the upper surface of the power feeding unit 30 before the moving body enters the power feeding area. In the present embodiment, one end of the heat insulation / insulation sheet portion 270 is supported by the connecting portion 42, and the other end is stored in a roll portion 271 described later. Further, in the present embodiment, the width of the heat shield / insulation sheet portion 270 in the direction orthogonal to the approach direction of the movable body is the same as the width in the direction orthogonal to the approach direction of the movable body of the power supply unit 30. However, the width of the feed unit 30 may be larger than the width of the feed unit 30 in the direction orthogonal to the approach direction of the mobile unit. In this case, it is possible to shield or thermally insulate the thermal energy not only vertically above the feeding unit 30 but also obliquely from above the feeding unit 30.

  The roll unit 271 has a function of winding the heat insulating and heat insulating sheet unit 270. Specifically, when the moving object enters the feeding area and a part of the moving object is in contact with the pair of receiving parts 41 and the entering operation to the feeding area is performed, the connecting part 42 is connected to the connection support part 44. Along the extension direction of the guide rails of the guide rail portion 45 in conjunction with the movement of the movable body. At this time, the heat insulating and insulating sheet portion 270 receives a pressing force from the connecting portion 42. Thus, the heat insulating and heat insulating sheet portion 270 is wound and stored in the roll portion 271. That is, the roll unit 271 acts to wind the heat insulating and heat insulating sheet unit 270 in conjunction with the movement of the pair of receiving units 41. Here, the winding force of the heat insulating and heat insulating sheet portion 270 of the roll portion 271 is set smaller than the expansion and contraction force of the spring portion 147 of the guide rail portion 45. In addition, since one end of the heat shield / insulation sheet portion 270 is supported by the connection portion 42, when the movable body withdraws from the power feeding area, the operation to return to the initial state by the action of the spring portion 147 is performed. Thus, the heat insulating and heat insulating sheet portion 270 is unrolled from the roll portion 271 so as to cover the upper surface of the power feeding portion 30. As a result, when the movable body has not entered the feeding area, the upper surface of the feeding part 30 is covered by the heat insulating and insulating sheet part 270.

  As described above, in the non-contact power transmission device according to the present embodiment, the non-contact power feeding device A1 is supported by the connecting portion 42, and the heat insulating and heat insulating sheet portion 270 covering the upper surface of the power feeding portion 30; The roll unit 271 is further provided with a roll unit 271 that winds the heat insulating and heat insulating sheet unit 270 in conjunction with the movement. Therefore, before the moving body enters the feed area, the upper surface of the feed unit 30 is covered by the heat insulating and insulating sheet 270. Therefore, it is possible to prevent the performance deterioration of the components caused by the temperature rise in the housing of the power supply unit 30 due to sunlight. Further, since the heat insulating and heat insulating sheet portion 270 moves in conjunction with the movement of the receiving portion 41, it is possible to reduce the driving device such as an actuator for winding and unwinding the heat insulating and heat insulating sheet portion 270. .

  A: non-contact power transmission device B: load A1 non-contact power feeding device A2 non-contact power receiving device 10 power source 20 inverter 30 power feeding portion 40, 140 foreign matter removing portion 41 pair Receiver 42, connection 43, sweep-out 44, connection support 45, guide rail 451, guide rail connection shaft 452, wheel 44, rotation support 46, power receiver 60, ... Rectifying part, 147 ... spring part, 270 ... thermal insulation insulating sheet part, 271 ... roll part.

Claims (4)

A feeding unit disposed in the feeding area;
And a foreign matter removing unit for removing foreign matter from above the power feeding unit,
The foreign matter removing unit includes a pair of receiving units that move in response to a pressing force;
A connecting portion for connecting and supporting the pair of receiving portions;
A sweeping unit fixed to the coupling unit and wiping the upper surface of the power feeding unit;
A connection support portion for supporting the connection portion;
A guide rail portion for linearly guiding the connection support portion;
And a rotating support post portion connected to the guide rail portion and rotatably supporting the pair of receiving portions in the in-plane direction via the guide rail portion,
The non-contact power feeding device characterized in that the sweep-out portion moves on the power feeding portion in conjunction with the movement of the pair of receiving portions.   The non-contact power feeding device according to claim 1, wherein the foreign matter removing unit further includes an expandable spring portion disposed on the guide rail portion and coupled to the connection support portion. A heat insulating and heat insulating sheet portion supported by the connecting portion and covering an upper surface of the power feeding portion;
3. The non-contact power feeding device according to claim 1, further comprising: a roll unit that winds up a heat insulating and thermal insulating sheet unit in conjunction with the movement of the receiving unit. The non-contact power feeding device according to any one of claims 1 to 3.
A contactless power transfer device comprising: a contactless power reception device.

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