WO2019198444A1 - コイル位置調整機構、及び非接触給電システム - Google Patents

コイル位置調整機構、及び非接触給電システム Download PDF

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Publication number
WO2019198444A1
WO2019198444A1 PCT/JP2019/011485 JP2019011485W WO2019198444A1 WO 2019198444 A1 WO2019198444 A1 WO 2019198444A1 JP 2019011485 W JP2019011485 W JP 2019011485W WO 2019198444 A1 WO2019198444 A1 WO 2019198444A1
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WO
WIPO (PCT)
Prior art keywords
coil
movable body
biasing member
power
urging
Prior art date
Application number
PCT/JP2019/011485
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
真史 則座
Original Assignee
日本電産シンポ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電産シンポ株式会社 filed Critical 日本電産シンポ株式会社
Priority to CN201980025208.XA priority Critical patent/CN111954967A/zh
Priority to JP2020513149A priority patent/JP7327761B2/ja
Publication of WO2019198444A1 publication Critical patent/WO2019198444A1/ja

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a coil position adjustment mechanism and a non-contact power feeding system.
  • Non-contact power feeding may be performed on the moving body (see, for example, Patent Document 1).
  • the moving body of Patent Document 1 includes a power receiving side coil, an acquisition unit that acquires efficiency information regarding the efficiency of contactless power feeding, a moving mechanism that moves the power receiving side coil, and a control unit that controls the moving mechanism.
  • the control part of patent document 1 judges whether it is necessary to move a receiving side coil using efficiency information, after a moving body moves to a feeding spot. When the efficiency of non-contact power supply exceeds a predetermined degree, the control unit of Patent Document 1 determines that it is not necessary to move the power receiving side coil, and if not, moves the power receiving side coil. Judge that it is necessary.
  • Patent Literature 1 When it is determined that the power receiving side coil needs to be moved, the control unit of Patent Literature 1 needs to move the power receiving side coil by controlling the moving mechanism, and again use the efficiency information to move the power receiving side coil. Determine if there is.
  • the control unit of Patent Document 1 repeats the movement of the power receiving side coil until it is determined that it is not necessary to move the power receiving side coil. Or the control part of patent document 1 moves a receiving side coil to a some position, and selects the position where the efficiency of non-contact electric power feeding is the highest from the movement destination.
  • Patent Document 1 moves the power receiving side coil after the moving body has moved to the power feeding spot, thereby positioning the power receiving side coil and the transmitting side coil. Therefore, it takes time to position the coil on the power reception side and the coil on the transmission side.
  • This invention is made in view of the said subject, The objective is to provide the coil position adjustment mechanism and non-contact electric power feeding system which can perform positioning of a receiving coil and an electric power feeding coil in a short time.
  • the exemplary coil position adjusting mechanism of the present invention includes a coil moving mechanism.
  • the coil moving mechanism displaces the position of the power feeding coil or the power receiving coil.
  • the coil moving mechanism includes a support and at least one urging member.
  • the support supports the power feeding coil or the power receiving coil.
  • the at least one biasing member biases the support.
  • the at least one biasing member includes at least one of a first biasing member, a second biasing member, and a third biasing member.
  • the first biasing member biases the support body in the X direction.
  • the second urging member urges the support body in the Y direction.
  • the third urging member urges the support body around a central axis.
  • the Y direction is a direction orthogonal to the X direction
  • the central axis is orthogonal to a plane including the X direction and the Y direction.
  • An exemplary non-contact power feeding system of the present invention includes a moving body, a power receiving facility, a power feeding facility, and the coil position adjusting mechanism.
  • the power receiving facility has a power receiving coil.
  • the power supply facility includes a power supply coil, and transmits power from the power supply coil to the power reception coil.
  • the power receiving facility is mounted on the moving body.
  • the coil moving mechanism included in the coil position adjusting mechanism is provided in the moving body or the power supply facility.
  • positioning of the power receiving coil and the power feeding coil can be performed in a shorter time.
  • FIG. 1 is a diagram showing a non-contact power feeding system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing a coil position adjusting mechanism according to the embodiment of the present invention.
  • FIG. 3 is a plan view showing a coil position adjusting mechanism according to the embodiment of the present invention.
  • FIG. 4 is a front view showing the moving body according to the embodiment of the present invention.
  • FIG. 5 is a side view showing the moving body according to the embodiment of the present invention.
  • FIG. 6 is a block diagram showing a non-contact power feeding system according to an embodiment of the present invention.
  • the X direction, the Y direction, and the Z direction that are orthogonal to each other may be described.
  • the X direction and the Y direction are parallel to the horizontal direction
  • the Z direction is parallel to the vertical direction.
  • the X direction may be described as the front-rear direction
  • the Y direction may be described as the left-right direction
  • the Z direction may be described as the up-down direction.
  • FIG. 1 is a diagram illustrating a non-contact power feeding system 100 according to the present embodiment.
  • the non-contact power feeding system 100 includes a moving body 10, a power receiving facility 110, and a power feeding facility 120.
  • the power receiving facility 110 is mounted on the moving body 10.
  • the power receiving facility 110 has a power receiving coil 112, and the power feeding facility 120 has a power feeding coil 122.
  • the power supply facility 120 transmits power from the power supply coil 122 to the power reception coil 112. Specifically, when the moving body 10 approaches the power feeding facility 120 and the moving body 10 stops at a position where the distance between the power receiving coil 112 and the power feeding coil 122 is equal to or less than the maximum power feedable distance, the power receiving coil 122 receives power. Electric power is supplied to the coil 112 without contact.
  • the maximum feedable distance corresponds to a position where the power receiving coil 112 is farthest from the power feeding coil 122 in a power feeding range in which power transmission from the power feeding coil 122 to the power receiving coil 112 is possible.
  • the non-contact power feeding method is not particularly limited, and is, for example, any one of an electromagnetic induction method, a magnetic field resonance method, and an electric field resonance method.
  • FIG. 2 is a perspective view showing the coil position adjusting mechanism 1 according to the present embodiment.
  • the non-contact power feeding system 100 described with reference to FIG. 1 further includes a coil position adjusting mechanism 1.
  • the coil position adjusting mechanism 1 includes a coil moving mechanism 2 and a first alignment member 8.
  • the coil moving mechanism 2 is provided in the power supply facility 120 described with reference to FIG. 1, and the first alignment member 8 is provided in the moving body 10 described with reference to FIG. 1.
  • the coil moving mechanism 2 of this embodiment is demonstrated with reference to FIG.2 and FIG.3 first.
  • the coil moving mechanism 2 includes a base body 3, a movable guide 4, a first urging member 5, a pair of second urging members 6, a first shaft 51, and a second shaft. And a shaft 61.
  • the coil moving mechanism 2 displaces the position of the feeding coil 122 described with reference to FIG. More specifically, the coil moving mechanism 2 displaces the position of the power feeding pad 121 that houses the power feeding coil 122.
  • the displacement of the positions of the feeding coil 122 and the feeding pad 121 includes the displacement of the positions of the feeding coil 122 and the feeding pad 121 in the X direction and the Y direction, and the ⁇ direction (rotation) described with reference to FIG. Direction) and displacements of the rotational positions of the power feeding coil 122 and the power feeding pad 121 are included.
  • the side on which the power feeding pad 121 is disposed is “ ⁇ X side” and the opposite side is “+ X side”.
  • the embodiment will be described with the “ ⁇ X side” as the front side of the coil moving mechanism 2 and the “+ X side” as the rear side of the coil moving mechanism 2. Further, the embodiment will be described assuming that the left side of the coil moving mechanism 2 is “+ Y side” and the right side of the coil moving mechanism 2 is “ ⁇ Y side”.
  • the base body 3 is fixed to the ground surface or the floor surface, for example. More specifically, the base body 3 has a base portion 31.
  • the base portion 31 has a through hole 3a extending in the vertical direction (Z direction).
  • the through hole 3 a passes through the base portion 31.
  • a fastening member such as a bolt is inserted into the through hole 3a, and the base body 3 is fixed to the ground or the floor.
  • the embodiment will be described with the side on which the base body 3 is disposed as “ ⁇ Z side” and the opposite side as “+ Z side”.
  • the embodiment will be described with the “ ⁇ Z side” as the lower side and the “+ Z side” as the upper side.
  • the base body 3 includes a first wall portion 32 and a second wall portion 33 in addition to the base portion 31.
  • the first wall portion 32 and the second wall portion 33 protrude upward (+ Z side) from the base portion 31 of the base body 3.
  • the 1st wall part 32 and the 2nd wall part 33 oppose in the front-back direction (X direction). More specifically, the first wall portion 32 is provided at a front end portion ( ⁇ X side end portion) of the base portion 31 of the base body 3, and the second wall portion 33 is formed of the base portion 31 of the base body 3. Is provided at the rear end (the end on the + X side).
  • the first shaft 51 is a rod-like member extending in the front-rear direction (X direction), and is fixed to the base body 3. More specifically, one end of the first shaft 51 is fixed to the first wall portion 32, and the other end of the first shaft 51 is fixed to the second wall portion 33.
  • the movable guide 4 has a first movable body 41, a second movable body 42, and a third movable body 43.
  • the movable guide 4 of the present embodiment guides the feeding coil 122 described with reference to FIG. 1 in the X direction, the Y direction, and the ⁇ direction described with reference to FIG. More specifically, the movable guide 4 guides the power feeding pad 121 in the X direction, the Y direction, and the ⁇ direction.
  • the first movable body 41 is disposed above the base portion 31 of the base body 3. Alternatively, the first movable body 41 is slidably disposed on the upper surface of the base portion 31 of the base body 3.
  • the first movable body 41 has a first through hole extending in the front-rear direction.
  • the first through hole penetrates the first movable body 41.
  • the first shaft 51 is inserted into the first through hole and guides the first movable body 41 in the front-rear direction (X direction). Therefore, the first shaft 51 functions as a guide member that guides the first movable body 41 in the X direction.
  • the 1st movable body 41 has the 1st bearing part arrange
  • the first bearing portion supports the first shaft 51 so as to be slidable in the front-rear direction (X direction).
  • the coil moving mechanism 2 may have one 1st shaft 51, and several 1st shaft 51 is included. You may have.
  • the coil moving mechanism 2 makes the some 1st shaft 51 support. It is preferable to have.
  • the first biasing member 5 biases the first movable body 41 in the X direction.
  • the first biasing member 5 is a spring.
  • the first biasing member 5 is attached to the first shaft 51.
  • One end of the first urging member 5 is in contact with the rear surface of the first movable body 41, and the other end of the first urging member 5 is in contact with the second wall portion 33.
  • one end of the first urging member 5 is fixed to the rear surface of the first movable body 41, and the other end of the first urging member 5 is fixed to the second wall portion 33.
  • the first biasing member 5 biases the first movable body 41 forward ( ⁇ X side). In other words, the first biasing member 5 biases the first movable body 41 toward the first wall portion 32.
  • the number of the first urging members 5 may be the same as that of the first shaft 51 or may be smaller than that of the first shaft 51.
  • the second movable body 42 is disposed above the first movable body 41.
  • the second movable body 42 is slidably disposed on the upper surface of the first movable body 41.
  • the second movable body 42 has a base portion 421, and the base portion 421 of the second movable body 42 is disposed above or on the upper surface of the first movable body 41.
  • the length of the base portion 421 of the second movable body 42 in the left-right direction (Y direction) is longer than the length of the first movable body 41 in the left-right direction (Y direction). Both ends of the direction protrude from the first movable body 41.
  • the second movable body 42 includes a third wall portion 422 and a fourth wall portion 423 in addition to the base portion 421.
  • the third wall portion 422 and the fourth wall portion 423 protrude downward from the base portion 421 of the second movable body 42 ( ⁇ Z side).
  • the 3rd wall part 422 and the 4th wall part 423 oppose in the left-right direction (Y direction). More specifically, the third wall portion 422 is provided at the left end portion (the + Y side end portion) of the base portion 421 of the second movable body 42, and the fourth wall portion 423 is provided on the second movable body 42.
  • the right end ( ⁇ Y side end) of the base portion 421 is provided at the right end ( ⁇ Y side end) of the base portion 421.
  • the second shaft 61 is a rod-like member extending in the left-right direction (Y direction) and is fixed to the second movable body 42. More specifically, one end of the second shaft 61 is fixed to the third wall portion 422, and the other end of the second shaft 61 is fixed to the fourth wall portion 423.
  • the first movable body 41 has a second through hole extending in the left-right direction. The second through hole penetrates the first movable body 41.
  • the second shaft 61 is inserted into the second through hole and guides the first movable body 41 in the left-right direction (Y direction). Therefore, the second shaft 61 functions as a guide member that guides the first movable body 41 in the Y direction.
  • the 2nd movable body 42 has the 2nd bearing part arranged at the 2nd penetration hole.
  • the second bearing portion supports the second shaft 61 so as to be slidable in the left-right direction (Y direction).
  • the coil moving mechanism 2 may have one 2nd shaft 61, and has several 2nd shaft 61. FIG. May be.
  • the coil moving mechanism 2 has a plurality of second shafts 61 in order to stably support the second movable body 42. Is preferred.
  • the pair of second urging members 6 urge the second movable body 42 in the Y direction.
  • the second urging member 6 is a spring.
  • the pair of second urging members 6 are attached to the second shaft 61.
  • One of the pair of second urging members 6 is disposed between the left side surface of the first movable body 41 and the third wall portion 422.
  • the other of the pair of second urging members 6 is disposed between the right side surface of the first movable body 41 and the fourth wall portion 423.
  • the second urging member 6 disposed between the left side surface of the first movable body 41 and the third wall portion 422 will be referred to as a “left second urging member 6”.
  • the second urging member 6 disposed between the right side surface and the fourth wall portion 423 is referred to as a “right second urging member 6”.
  • One end of the second urging member 6 on the left side is in contact with the left side surface of the first movable body 41, and the other end of the second urging member 6 on the left side is in contact with the third wall portion 422.
  • one end of the left second biasing member 6 is fixed to the left side surface of the first movable body 41, and the other end of the left second biasing member 6 is fixed to the third wall portion 422.
  • the second biasing member 6 on the left side biases the third wall portion 422 to the left side (+ Y side). In other words, the left second biasing member 6 biases the second movable body 42 to the left.
  • One end of the right second urging member 6 is in contact with the right side surface of the first movable body 41, and the other end of the right second urging member 6 is in contact with the fourth wall portion 423.
  • one end of the right second biasing member 6 is fixed to the right side surface of the first movable body 41, and the other end of the right second biasing member 6 is fixed to the fourth wall portion 423.
  • the second biasing member 6 on the right side biases the fourth wall portion 423 to the right side ( ⁇ Y side). In other words, the right second biasing member 6 biases the second movable body 42 to the right.
  • the number of the pair of second urging members 6 may be the same as that of the second shaft 61 or may be smaller than that of the second shaft 61.
  • the third movable body 43 supports the feeding coil 122 described with reference to FIG. More specifically, the third movable body 43 supports the power supply pad 121.
  • the third movable body 43 is an example of a support body.
  • the third movable body 43 is disposed above the second movable body 42. More specifically, the third movable body 43 has a base portion 431, and the base portion 431 of the third movable body 43 is disposed above the second movable body 42.
  • the third movable body 43 includes a fifth wall portion 432 and a second alignment member 44 in addition to the base portion 431.
  • the second alignment member 44 will be described later together with the first alignment member 8.
  • the fifth wall portion 432 protrudes upward (+ Z side) from the base portion 431 of the third movable body 43. More specifically, the fifth wall portion 432 is provided at the front end portion ( ⁇ X side end portion) of the base portion 431 of the third movable body 43. In addition, the power supply pad 121 is fixed to the front surface (the surface on the ⁇ X side) of the fifth wall portion 432.
  • FIG. 3 is a plan view showing the coil position adjusting mechanism 1 according to the present embodiment. As shown in FIG. 3, the coil moving mechanism 2 further includes a third urging member 7 and a third shaft 71.
  • the third shaft 71 is a rod-like member extending in the vertical direction (Z direction) and has a central axis extending in the vertical direction.
  • the central axis is orthogonal to the plane including the X direction and the Y direction. In other words, the central axis is orthogonal to the horizontal plane.
  • the circumferential direction with respect to the central axis of the third shaft 71 may be referred to as the “ ⁇ direction”.
  • the upper end portion of the third shaft 71 is fixed to the base portion 431 of the third movable body 43.
  • the lower end portion of the third shaft 71 is rotatably supported by the base portion 421 of the second movable body 42.
  • the base portion 421 of the second movable body 42 supports the third shaft 71 so as to be rotatable about the central axis of the third shaft 71.
  • the base portion 421 of the second movable body 42 has a recess extending downward from the upper surface of the base portion 421, and the lower end portion of the third shaft 71 is fitted into this recess.
  • the 2nd movable body 42 has the 3rd bearing part arranged in the crevice of base part 421.
  • the third bearing portion supports the third shaft 71 so as to be rotatable in the circumferential direction ( ⁇ direction).
  • the third urging member 7 is disposed in a gap between the base portion 421 of the second movable body 42 and the base portion 431 of the third movable body 43.
  • the third urging member 7 urges the third movable body 43 in the circumferential direction ( ⁇ direction) around the central axis of the third shaft 71. In other words, the third urging member 7 urges the third movable body 43 around the central axis.
  • the third biasing member 7 is a spring.
  • the coil moving mechanism 2 of the present embodiment has two third urging members 7.
  • One of the two third urging members 7 is disposed on the left side (+ Y side) of the third shaft 71, and the other of the two third urging members 7 is on the right side ( ⁇ (Y side).
  • One end 7 a of each third urging member 7 is fixed to the base portion 421 of the second movable body 42, and the other end 7 b of each third urging member 7 is fixed to the base portion 431 of the third movable body 43.
  • the third biasing member 7 disposed on the left side (+ Y side) of the third shaft 71 may be referred to as a “left third biasing member 7”.
  • the third urging member 7 disposed on the right side ( ⁇ Y side) of the third shaft 71 may be referred to as “right third urging member 7”.
  • the left third biasing member 7 biases the third movable body 43 in the clockwise direction
  • the right third biasing member 7 biases the third movable body 43 in the counterclockwise direction. Accordingly, the two second urging members 6 urge the third movable body 43 in the opposite rotation directions.
  • the clockwise direction as “ ⁇ direction”
  • the counterclockwise direction as “+ ⁇ direction”.
  • the third movable body 43 is movable in the X direction and the Y direction, and is rotatable in the ⁇ direction.
  • the third movable body 43 is biased in the X direction by the first biasing member 5 and biased in the Y direction by the second biasing member 6. Further, the third movable body 43 is urged around the central axis by the third urging member 7. In other words, the third movable body 43 is urged in the ⁇ direction by the third urging member 7.
  • the first alignment member 8 includes a base portion 81 and a projection portion 82.
  • the protruding part 82 protrudes from the base part 81.
  • the projection 82 has a triangular shape in plan view, and the projection 82 has two slopes 821 and one vertex 822.
  • the two inclined surfaces 821 of the protrusion 82 are an example of the second contact surface.
  • the second alignment member 44 is fixed to the front surface of the fifth wall portion 432. In other words, the second alignment member 44 is fixed to a surface of the fifth wall portion 432 where the power supply pad 121 is disposed. Therefore, the power feeding pad 121 and the second alignment member 44 are disposed on the same surface of the fifth wall portion 432.
  • the second alignment member 44 is disposed above the power supply pad 121. More specifically, the second alignment member 44 is fixed to the upper end portion of the fifth wall portion 432.
  • the second alignment member 44 has a notch 44a.
  • the notch 44a extends rearward (+ X direction) from the front surface of the second alignment member 44.
  • the cut-out portion 44a has a triangular shape in plan view, and the cut-out portion 44a has two slopes 441 and one vertex 44b.
  • the third movable body 43 has two inclined surfaces 441.
  • the vertex 44b of the notch 44a faces the central axis of the third shaft 71 in the X direction.
  • the two slopes 441 of the notch 44a extend in a direction crossing each other. Specifically, the two inclined surfaces 441 extend from the front surface of the second alignment member 44 in a direction intersecting the X direction.
  • the planar view shape of the notch 44 a matches the planar view shape of the protrusion 82. Therefore, the two slopes 441 of the notch 44 a include a shape that matches the two slopes 821 of the protrusion 82.
  • the two inclined surfaces 441 of the notch 44a are an example of a first contact surface.
  • the two slopes 821 of the protrusion 82 are two slopes of the notch 44a. 441 is in contact with the apex 822 of the protrusion 82 and the apex 44b of the notch 44a.
  • the efficiency of contactless power feeding that is, the efficiency of power transmission from the power feeding coil 122 (FIG. 1) to the power receiving coil 112 (FIG. 1) is determined by the two inclined surfaces 821 of the projecting portion 82 being notch portions 44a. High efficiency is achieved when the two inclined surfaces 441 are in contact with each other and the apex 822 of the protrusion 82 is in contact with the apex 44b of the notch 44a.
  • the operation of the coil moving mechanism 2 will be described with reference to FIGS. 1 to 3.
  • the moving body 10 moves to a position where the protrusion 82 fits into the cutout portion 44a.
  • the state of the coil moving mechanism 2 before the protrusion 82 is fitted into the notch 44a is referred to as an “initial state”.
  • the initial state is a state before the protrusion 82 contacts the notch 44a.
  • the mobile unit 10 when the mobile body 10 supplies power from the power supply facility 120 to the power receiving facility 110 in a non-contact manner, the mobile unit 10 causes the protrusion 82 to contact the cutout portion 44a, and the urging force of the first urging member 5 is applied. Accordingly, the first movable body 41 to the third movable body 43 are moved in the + X direction from the initial position.
  • the target stop position of the moving body 10 at the time of non-contact power feeding is a position where the length of the first biasing member 5 is half the length in the initial state.
  • the apex 822 of the projection 82 is shifted in the + X direction with the apex 44b of the notch 44a being shifted to the left (+ Y side) or the right ( ⁇ Y side).
  • the protrusion 82 comes into contact with the notch 44a, the second movable body 42 and the third movable body 43 move in the + Y direction or the ⁇ Y direction from the initial position.
  • the two slopes 821 of the protrusion 82 are in contact with the two slopes 441 of the notch 44a, and the vertex 822 of the protrusion 82 is in contact with the vertex 44b of the notch 44a.
  • the third movable body 43 rotates in the initial state when the projecting portion 82 contacts the notch portion 44a.
  • the second movable body 42 and the third movable body 43 are moved in the + Y direction or the ⁇ Y direction from the initial position by rotating in the + ⁇ direction or the ⁇ direction from the position.
  • the two slopes 821 of the protrusion 82 are in contact with the two slopes 441 of the notch 44a, and the vertex 822 of the protrusion 82 is in contact with the vertex 44b of the notch 44a.
  • the contactless power feeding system 100 and the coil position adjusting mechanism 1 have been described above with reference to FIGS. 1 to 3.
  • the power receiving coil 112 and the power feeding coil 122 are positioned at appropriate positions only by moving the moving body 10 to the target stop position.
  • the power receiving coil 112 and the power feeding coil 122 are positioned at a position where power can be transmitted with high efficiency. Therefore, positioning of the power receiving coil 112 and the power feeding coil 122 can be performed in a shorter time.
  • the accuracy of the stop position of the moving body 10 is an accuracy that allows the protrusion 82 to be fitted into the notch 44a, it is possible to transmit power with high efficiency.
  • the moving body 10 moves in the + X direction in a state where the vertex 822 of the projecting portion 82 is shifted to the left side (+ Y side) or the right side ( ⁇ Y side) from the vertex 44b of the notch 44a. Even when the 10 stop positions deviate from the target stop position, power can be transmitted with high efficiency. Further, even when the moving body 10 moves in a direction intersecting the X direction and the stop position of the moving body 10 deviates from the target stop position, it is possible to transmit power with high efficiency.
  • the target stop position of the moving body 10 is a position where the first movable body 41 to the third movable body 43 are not moved in the + X direction from the initial position, depending on the accuracy of the stop position of the moving body 10
  • the protrusion 82 does not contact the notch 44a.
  • the protrusion 82 is shallowly fitted into the notch 44a and the contact state between the protrusion 82 and the notch 44a does not become a state in which power can be transmitted with high efficiency.
  • the movable body 10 moves the first movable body 41 to the third movable body 43 in the + X direction from the initial position during non-contact power feeding. Therefore, the protrusion 82 can be more reliably fitted into the notch 44a. In other words, the contact state between the projecting portion 82 and the cutout portion 44a can be more reliably and in a state where power can be transmitted with high efficiency.
  • the coil position adjusting mechanism 1 includes the first alignment member 8. Therefore, since the first alignment member 8 has a shape that matches the shape of the second alignment member 44, the first alignment member 8 is brought into contact with the second alignment member 44 to supply power to the power receiving coil 112.
  • the coil 122 can be positioned at a position where power can be transmitted with high efficiency.
  • the first alignment member 8 has the protrusion 82. Therefore, since the protrusion part 82 can be protruded from the moving body 10, the 1st alignment member 8 can be made to contact the 2nd alignment member 44 more reliably.
  • the second alignment member 44 has a shape that matches the shape of the protrusion 82
  • the first alignment member 8 is brought into contact with the second alignment member 44, and the power receiving coil 112, the power supply coil 122, and the like. Can be positioned at a position where power can be transmitted with high efficiency.
  • the shape of the two slopes 821 of the protrusion 82 matches the shape of the two slopes 441 of the notch 44a. Therefore, the two inclined surfaces 821 of the protrusion 82 are brought into contact with the two inclined surfaces 441 of the cutout portion 44a, and the power receiving coil 112 and the power feeding coil 122 can be positioned at a position where power can be transmitted with high efficiency.
  • the biasing force of the first biasing member 5 to the third urging member 7 will be described. Even if the biasing force of the first biasing member 5 is equal to or less than the biasing force of the second biasing member 6 and the third biasing member 7, the biasing force of the second biasing member 6 and the third biasing member 7 is used. Although it may be large, it is preferably larger than the urging force of the second urging member 6 and the third urging member 7. When the biasing force of the first biasing member 5 is larger than the biasing force of the second biasing member 6 and the third biasing member 7, the biasing force of the first biasing member 5 is the second biasing member 6 and the third biasing member 6.
  • the third movable body 43 can be reliably operated in the Y direction and the ⁇ direction, and the power receiving coil 112 and the power feeding coil 122 can be more reliably positioned at positions where power can be transmitted with high efficiency.
  • the urging force of the second urging member 6 may be equal to or less than the urging force of the third urging member 7, but may be greater than the urging force of the third urging member 7.
  • the biasing force is preferably larger than
  • the biasing force of the second biasing member 6 is larger than the biasing force of the third biasing member 7 because the biasing force of the second biasing member 6 is larger than the biasing force of the third biasing member 7.
  • the third movable body 43 is reliably operated in the ⁇ direction according to the degree of inclination of the protruding portion 82 with respect to the notched portion 44a in the initial state, and the power receiving coil 112 and the power feeding coil 122 transmit power with high efficiency. Positioning can be performed more reliably at a possible position.
  • FIG. 4 is a front view showing the moving body 10 according to the present embodiment
  • FIG. 5 is a side view showing the moving body 10 according to the present embodiment.
  • the mobile object 10 is, for example, an automated guided vehicle (AGV).
  • AGV automated guided vehicle
  • the automated guided vehicle moves autonomously to a desired destination.
  • the moving body 10 includes an exterior body 11 and drive wheels 12.
  • the moving body 10 includes a motor and a gear that rotate the driving wheel 12 and a driving circuit.
  • the drive circuit generates a signal for driving the motor.
  • the motor, the gear, and the drive circuit are disposed inside the exterior body 11.
  • the power receiving pad 111 is mounted on the moving body 10 of the present embodiment.
  • the power receiving pad 111 accommodates the power receiving coil 112 described with reference to FIG.
  • the power receiving pad 111 is disposed on the front side of the exterior body 11 in the exterior body 11.
  • the moving body 10 is provided with a first alignment member 8.
  • the first alignment member 8 is fixed to the front surface of the exterior body 11. Accordingly, the protrusion 82 protrudes in the forward direction of the moving body 10.
  • the first alignment member 8 is disposed on the upper side of the power receiving pad 111. Therefore, when the moving body 10 moves forward toward the coil moving mechanism 2 and moves to a position where the protrusion 82 fits into the notch 44a, the power receiving coil 112 and the power feeding coil are moved to a position where power can be transmitted with high efficiency. 122 can be positioned.
  • FIG. 6 is a block diagram showing the non-contact power feeding system 100 according to the present embodiment.
  • the power receiving facility 110 will be described.
  • the power receiving facility 110 includes a power receiving coil 112, a magnetic core 113, a capacitor 114, a rectifier 115, a charger 116, a battery 117, and a power receiving side controller 118.
  • the power receiving coil 112 and the magnetic core 113 are accommodated in the power receiving pad 111 described with reference to FIGS. 4 and 5.
  • the power receiving coil 112 is wound around the magnetic core 113.
  • the capacitor 114 is connected to the power receiving coil 112.
  • the power receiving coil 112, the magnetic core 113, and the capacitor 114 constitute a power receiving side resonator.
  • the rectifier 115 rectifies the output of the power-receiving-side resonator to generate a DC voltage.
  • the charger 116 has a DC / DC converter.
  • the DC / DC converter converts the output (DC voltage) of the rectifier 115 into a voltage suitable for charging the battery 117.
  • the battery 117 is a secondary battery and is connected to the charger 116.
  • the power receiving side controller 118 controls the switching element of the DC / DC converter of the charger 116 at the time of charging.
  • the power supply facility 120 includes a power supply coil 122, a magnetic core 123, a capacitor 124, a power supply unit 125, and a power supply side controller 126.
  • the power supply coil 122 and the magnetic core 123 are accommodated in the power supply pad 121 described with reference to FIGS.
  • the power supply coil 122 is wound around the magnetic core 123.
  • the capacitor 124 is connected to the power supply coil 122.
  • the feeding coil 122, the magnetic core 123, and the capacitor 124 constitute a feeding-side resonator.
  • the power supply unit 125 supplies an AC voltage having a predetermined frequency to the power supply side resonator according to a command from the power supply side controller 126. As a result, power is transmitted from the power feeding coil 122 to the power receiving coil 112, and the battery 117 is charged based on the power transmitted to the power receiving coil 112. The electric power charged in the battery 117 is used for the operation of each component of the moving body 10.
  • the first urging member 5 is disposed only between the first movable body 41 and the second wall portion 33, but the coil moving mechanism 2 includes the first movable body 41 and the first movable body 41.
  • the first urging member 5 disposed between the second wall portion 33 and the first urging member 5 is further provided. May be.
  • the second biasing member 6 on the left side biases the second movable body 42 to the left side
  • the second biasing member 6 on the right side biases the second movable body 42 to the right side
  • the left second biasing member 6 may bias the second movable body 42 to the right
  • the right second biasing member 6 may bias the second movable body 42 to the left.
  • each third biasing member 7 is fixed to the base portion 421 of the second movable body 42, and the other end 7 b of each third biasing member 7 is the third movable body 43.
  • the one end 7a of each third biasing member 7 is fixed to the base portion 431 of the third movable body 43, and the other end 7b of each third biasing member 7 is the second movable body.
  • the base portion 421 of 42 may be fixed.
  • the left third biasing member 7 biases the third movable body 43 in the clockwise direction ( ⁇ direction), and the right third biasing member 7 is the third movable body. 43 is urged in the counterclockwise direction (+ ⁇ direction), but the left third urging member 7 urges the third movable body 43 in the counterclockwise direction (+ ⁇ direction), and the right third urging member.
  • the member 7 may urge the third movable body 43 in the clockwise direction ( ⁇ direction).
  • the second alignment member 44 has the cutout portion 44a.
  • the second alignment member 44 is provided on the front surface of the second alignment member 44 in place of the cutout portion 44a. , May have a recess recessed in the + X direction.
  • the planar view shape of the protruding portion 82 and the planar view shape of the notched portion 44a are triangular.
  • the planar view shape of the protrusion 82 and the planar view shape of the notch 44a are not limited.
  • the arc shape may be sufficient as the planar view shape of the projection part 82, and the planar view shape of the notch part 44a.
  • the planar view shape of the projecting portion 82 and the planar view shape of the notched portion 44a are the same shape, but the projecting portion 82 fits into the notched portion 44a, so that it is highly efficient. As long as the power receiving coil 112 and the power feeding coil 122 are positioned at a position where power can be transmitted, the planar view shape of the projecting portion 82 and the planar view shape of the cutout portion 44a do not have to coincide with each other.
  • the first alignment member 8 has one protrusion 82, but the first alignment member 8 may have two or more protrusions 82.
  • the first alignment member 8 has the protruding portion 82, but the protruding portion 82 may be omitted.
  • the 3rd movable body 43 has a contact surface which contacts the base part 81 of the 1st position alignment member 8, for example.
  • the coil position adjusting mechanism 1 includes the first alignment member 8, but the first alignment member 8 may be omitted.
  • the 3rd movable body 43 has a contact surface which contacts the exterior body 11 of the mobile body 10, for example.
  • the first urging member 5 is a spring, but the first urging member 5 is capable of urging the first movable body 41 to the third movable body 43 in the X direction.
  • the first urging member 5 may be rubber.
  • the first urging member 5 may be an elastic body.
  • the second biasing member 6 is a spring, but the second biasing member 6 can bias the second movable body 42 and the third movable body 43 in the Y direction.
  • the second urging member 6 may be rubber.
  • the second urging member 6 may be an elastic body.
  • the third urging member 7 is a spring, but the third urging member 7 is not limited to a spring as long as the third movable body 43 can be urged in the ⁇ direction.
  • the third urging member 7 may be rubber.
  • the third urging member 7 may be an elastic body.
  • the upper end portion of the third shaft 71 is fixed to the base portion 431 of the third movable body 43, but the lower end portion of the third shaft 71 is the base of the second movable body 42.
  • the portion 421 may be fixed.
  • the upper end portion of the third shaft 71 is rotatably supported by the base portion 431 of the third movable body 43.
  • the first shaft 51 guided the first movable body 41 to the third movable body 43 in the X direction.
  • the first movable body 41 to the third movable body 43 are, for example, in the X direction. It may be guided in the X direction by a guide rail extending in the direction X.
  • the second shaft 61 guided the second movable body 42 and the third movable body 43 in the Y direction, but the second movable body 42 and the third movable body 43 are, for example, Y It may be guided in the Y direction by a guide rail extending in the direction.
  • the third shaft 71 is used as a member that rotatably supports the third movable body 43 in the ⁇ direction.
  • the third movable body 43 extends, for example, in an arc shape. You may guide to (theta) direction with a guide rail.
  • the support body (third movable body 43) that supports the power supply coil 122 operates in the X direction, the Y direction, and the ⁇ direction. You may operate in one of the direction, the Y direction, and the ⁇ direction, or in two directions.
  • the coil moving mechanism 2 has one or two of the first urging member 5 to the third urging member 7, and one or two of the first shaft 51 to the third shaft 71. Have one.
  • the coil moving mechanism 2 has the first shaft 51 and the second shaft 61, but the first shaft 51 and the second shaft 61 may be omitted.
  • the first shaft 51 may be omitted.
  • the second shaft 61 may be omitted.
  • the base body 3 is fixed to the ground or the floor surface, but the target to which the base body 3 is fixed is not limited to the ground or the floor surface.
  • the base body 3 may be fixed to a support base installed on the ground or floor, or may be fixed to a box-shaped body included in the power supply facility 120.
  • the support base is a base that supports the coil moving mechanism 2.
  • the box-shaped body included in the power supply facility 120 accommodates, for example, a capacitor 124, a power supply unit 125, and a power supply side controller 126.
  • the base body 3 may be disposed at a position higher than the ground or the floor surface.
  • the coil moving mechanism 2 displaces the position of the feeding coil 122, but the coil moving mechanism 2 may displace the position of the power receiving coil 112.
  • the coil moving mechanism 2 is provided in the moving body 10, and the third movable body 43 supports the power receiving coil 112.
  • the first alignment member 8 is provided in the power supply facility 120.
  • the present invention is useful for non-contact power feeding of a moving body such as an automatic guided vehicle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
PCT/JP2019/011485 2018-04-13 2019-03-19 コイル位置調整機構、及び非接触給電システム WO2019198444A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980025208.XA CN111954967A (zh) 2018-04-13 2019-03-19 线圈位置调整机构以及非接触供电系统
JP2020513149A JP7327761B2 (ja) 2018-04-13 2019-03-19 コイル位置調整機構、及び非接触給電システム

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JP2018-077706 2018-04-13
JP2018077706 2018-04-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012039696A (ja) * 2010-08-04 2012-02-23 Denso Corp 充電装置
JP2015061377A (ja) * 2013-09-18 2015-03-30 株式会社豊田自動織機 非接触電力伝送装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012039696A (ja) * 2010-08-04 2012-02-23 Denso Corp 充電装置
JP2015061377A (ja) * 2013-09-18 2015-03-30 株式会社豊田自動織機 非接触電力伝送装置

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