JP2015056973A - Power transmission system and power reception equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power transmission system and power reception equipment capable of suppressing the reduction of transmission efficiency caused by a variation of a relative position between a core and a power transmission line.SOLUTION: The power transmission system includes: a power transmission line 14 for transmitting AC power; and a power reception unit 23 having a power reception coil capable of receiving AC power from the power transmission line 14. Here, the power reception coil 23 includes: a power reception core 30 having a wound power reception coil; and a regulation member 40 for regulating the relative position between the power transmission line 14 and the power reception core 30 in at least one direction between a direction along the power transmission line 14 and a direction orthogonal thereto, in a state that the power reception core 30 is movable along the power transmission line 14.

Description

  The present invention relates to a power transmission system and a power receiving device.

  There is known a power transmission system that performs power transmission to a moving body such as an automatic guided vehicle. For example, the power transmission system described in Patent Literature 1 includes an E-shaped core around which a power receiving coil is wound. In this case, when AC power is transmitted to the power transmission line in a state where the power transmission line is disposed in the region surrounded by the core, AC power is transmitted from the power transmission line to the power receiving coil by electromagnetic induction. The AC power received by the power receiving coil is used as power for the moving body.

JP 2002-320343 A

  Here, when the moving body moves, the transmission efficiency varies because the relative position between the core and the power transmission line varies during the movement of the moving body due to the undulation of the ground or the like. For this reason, the case where inefficient electric power transmission is performed may arise. Such inefficient power transmission is not preferable from the viewpoint of power loss and the like.

  An object of the present invention has been made in view of the above-described circumstances, and provides a power transmission system and a power receiving device that can suitably suppress a decrease in transmission efficiency due to a change in relative position between a core and a power transmission line. It is.

  A power transmission system that achieves the above object includes: a power transmission device that can output AC power; and a power receiving device that is mounted on a mobile body and that can receive the AC power from the power transmission device. The power receiving device includes a power transmission line through which AC power is transmitted, the power receiving device is wound around the power receiving core, and the power receiving coil is configured to receive the AC power from the power transmission line via the power receiving core. A regulating member for defining a relative position between the power transmission line and the power receiving core in at least one direction perpendicular to the direction along the power transmission line in a state in which the core is movable along the power transmission line; It is characterized by being.

  According to such a configuration, the relative position between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line is defined by the defining member. Thereby, the position shift (change in relative position) between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line is restricted. On the other hand, the power receiving core is allowed to move in the direction along the transmission line. Thereby, the movement of the power receiving core accompanying the movement of the moving body is not inhibited by the defining member. Therefore, it is possible to move the power receiving core in the direction along the power transmission line, and to suppress a decrease in transmission efficiency due to the positional deviation between the power transmission line and the power receiving core in at least one direction perpendicular to the direction along the power transmission line. .

  In the power transmission system, the defining member may be a dielectric and a non-magnetic material. According to such a configuration, since the defining member is a dielectric and a non-magnetic material, the effect of the defining member on power transmission from the power transmission line to the receiving coil is relatively small. Thereby, the problem that the power transmission from the power transmission line to the power receiving coil is hindered by the regulating member can be suppressed.

  In the power transmission system, the defining member has a main body portion to which the power receiving core is attached, and the main body portion has a defining groove extending in a direction along the power transmission line and into which the power transmission line is fitted. It is good to be formed. According to this configuration, the relative position between the power transmission line and the power receiving core is defined by fitting the power transmission line in the defined groove. Thus, the relative position can be defined with a relatively simple configuration.

  About the said electric power transmission system, the said definition member is provided with the guide part provided adjacent to at least one end part among the both ends of the direction in alignment with the said power transmission line in the said main-body part, The said power transmission line is provided in the said guide part. It is preferable that one end in a direction along the line communicates with the defining groove, and a guide groove having a divergent shape from the one end toward the other end in the direction along the power transmission line is formed. According to such a configuration, since the guide groove having a divergent shape is formed, when the moving body enters the power transmission line, the power transmission line easily enters the guide groove. And it is assumed that the power transmission line that has entered the guide groove is guided toward the specified groove and fits into the specified groove. Thereby, even if it is a case where a power transmission line and a regulation groove have shifted to some extent, a power transmission line can be made to fit in a regulation groove.

  In the power transmission system, the power receiving core defines a storage chamber that can store the power transmission line, the defining member is disposed in the housing chamber, and the defining member includes the power receiving core With the relative position between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line being defined while allowing movement along the power transmission line, the power transmission line is It is good to hold. According to such a configuration, the power transmission line is held in the accommodation room in a state where the relative position between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line is defined. Thereby, the fall of the transmission efficiency resulting from position shift with a power transmission line and a receiving core can be suppressed, suppressing the leakage of magnetic flux.

  About the said electric power transmission system, it is good to provide the movable holding | maintenance part which hold | maintains the said power transmission line in the state movable in the direction orthogonal to the direction along the said power transmission line. According to such a configuration, the power transmission line can be moved in a direction orthogonal to the direction along the power transmission line, so that the relative position between the power receiving core and the power transmission line can be more suitably defined.

  A power receiving device that achieves the above object is mounted on a moving body, and receives the AC power from a power receiving core and a transmission line wound around the power receiving core and transmitting AC power. A power receiving coil via the power transmission line, wherein the power receiving core is movable along the power transmission line, and the power transmission line in at least one direction perpendicular to the direction along the power transmission line And a defining member for defining a relative position between the power receiving core and the power receiving core.

  According to this configuration, the relative position between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line is defined by the defining member. Thereby, the position shift (change of relative position) between the power transmission line and the power receiving core in at least one direction orthogonal to the direction along the power transmission line is regulated. On the other hand, the power receiving core is allowed to move in the direction along the transmission line. Thereby, the movement of the power receiving core accompanying the movement of the moving body is not inhibited by the defining member. Therefore, it is possible to move the power receiving core in the direction along the power transmission line, and to suppress a decrease in transmission efficiency due to the positional deviation between the power transmission line and the power receiving core in at least one direction perpendicular to the direction along the power transmission line. .

  According to this invention, it is possible to suppress a decrease in transmission efficiency due to a change in the relative position between the core and the power transmission line.

The schematic diagram which shows the outline | summary of the electric power transmission system applied to the automatic guided vehicle. The perspective view which shows a power receiving unit and a power transmission line. The top view which shows a power receiving unit and a power transmission line. FIG. 4 is a sectional view taken along line 4-4 of FIG. The front view of the receiving unit and power transmission line seen from the direction along a power transmission line. The side view of a receiving unit and a power transmission line. The front view which shows the guide groove of another example.

  Hereinafter, an embodiment of a power transmission system and a power receiving device (power receiving device) will be described. 2, 3, and 6, the movable holding portion 60 is omitted for convenience of illustration. In FIG. 4, the power receiving coil 22 is shown in a front view, and in FIG. 5, only the power transmission line 14 is shown, and the inclined line 15 is omitted.

  As shown in FIG. 1, a power transmission system 10 is mounted on a power transmission device 11 capable of outputting AC power and an automatic guided vehicle C as a moving body that moves on a predetermined route. And a power receiving device 21 capable of receiving power.

  The power transmission device 11 includes an AC power source 12 that outputs AC power and a power supply line 13 that is connected to the AC power source 12 and through which AC power output from the AC power source 12 is transmitted. The power supply line 13 is suspended from the ceiling. The feed line 13 has a loop shape extending along the route of the automatic guided vehicle C as a whole. For this reason, when it cut | disconnects in the direction orthogonal to the direction where the feed line 13 is extended, the two feed lines 13 exist.

  Here, the feeder 13 has a portion extending in parallel to the installation surface G on which the automatic guided vehicle C is installed, and a portion inclined with respect to the installation surface G. And electric power transmission from the power transmission apparatus 11 to the power receiving apparatus 21 is performed not in the inclined part but in the part extending in parallel. For this reason, in order to distinguish both clearly, the part extended in parallel with respect to the installation surface G in the feed line 13 is called the power transmission line 14, and the part inclined with respect to the installation surface G in the feed line 13 is called This is referred to as an inclined line 15. The power transmission line 14 extends along the route of the automatic guided vehicle C. The inclined lines 15 are provided on both sides of the power transmission line 14 and are inclined in a direction away from the installation surface G than the power transmission line 14.

  The power receiving device 21 includes a power receiving unit 23 having a power receiving coil 22 (see FIG. 4) capable of receiving AC power from the power transmission line 14, and a charger 24 to which AC power received by the power receiving coil 22 is input. Yes. The charger 24 converts the AC power received by the power receiving coil 22 into DC power, and converts it into a voltage suitable for charging the battery 25 mounted on the automatic guided vehicle C. When the DC power converted by the charger 24 is input to the battery 25, the battery 25 is charged. The electric power of the battery 25 is used for the power of the automatic guided vehicle C.

Next, a detailed configuration of the power receiving unit 23 will be described.
As shown in FIGS. 2 to 4, the power receiving unit 23 includes a power receiving core 30 around which the power receiving coil 22 is wound. As shown in FIGS. 2 and 3, the power receiving core 30 extends in a direction along the power transmission line 14. Moreover, as shown in FIG. 4, the cross-sectional shape of the receiving core 30 at the time of cut | disconnecting in the direction orthogonal to the direction along the power transmission line 14 is E type. Specifically, the power receiving core 30 includes a rectangular plate-shaped base portion 31 and a pair of leg portions standing upward from an end portion in a direction orthogonal to the direction along the power transmission line 14 on the upper surface of the base portion 31. 32, 33 and a central leg 34 between the legs 32, 33. The power receiving coil 22 is wound around the center leg 34 and can receive AC power from the power transmission line 14 via the power receiving core 30. In addition, the front-end | tip part of each leg part 32 and 33 protrudes toward the center leg part 34 side, and the front-end | tip part of the center leg part 34 protrudes toward both the leg parts 32 and 33. FIG. The power receiving core 30 is formed of, for example, a ferrite core.

  Here, as shown in FIGS. 3 and 4, the power receiving core 30 divides a storage chamber 35 that can store the power transmission line 14 and opens upward. Specifically, one storage chamber 35 is partitioned by a base portion 31, a central leg portion 34, and one leg portion 32, and the other storage chamber 35 is formed by the base portion 31, the central leg portion 34, and the other leg. It is partitioned by the portion 33.

  As shown in FIGS. 2 to 4, the power receiving unit 23 includes a defining member 40 that defines a relative position between the power transmission line 14 and the power receiving core 30 in a state where the power receiving core 30 is movable along the power transmission line 14. ing. The defining member 40 is a dielectric and is formed of a nonmagnetic material, and is formed of, for example, polytetrafluoroethylene (PTFE) or polyacetal (POM).

  The defining member 40 includes a main body 41 to which the power receiving core 30 configured as described above is attached. As shown in FIG. 4, the main body 41 is formed so that its outer shape is the same as the shape of the inner surface of the storage chamber 35. The main body 41 is disposed in the storage chamber 35. The storage chamber 35 is filled with the main body portion 41.

  The main body 41 is formed with a regulation groove 42 that extends in a direction along the power transmission line 14 and into which the power transmission line 14 is fitted. The regulation groove 42 enters the accommodation chamber 35. In this case, the depth of the specified groove 42 is determined in a situation where the power transmission line 14 is fitted in the specified groove 42, in the present embodiment, in a situation where the power transmission line 14 is in contact with the bottom surface 42 a of the specified groove 42. The power transmission line 14 is set to be arranged at the center of the accommodation chamber 35 when viewed from the direction along the electric wire 14.

  As shown in FIG. 4, the bottom surface 42 a of the defining groove 42 is formed along the outer shape of the power transmission line 14. Specifically, the bottom surface 42a of the regulation groove 42 is curved so as to correspond to the circular cross-sectional shape of the power transmission line 14. The width of the regulation groove 42 is set to be the same as or slightly wider than the width of the power transmission line 14, specifically the diameter of the power transmission line 14.

  According to this configuration, when the power transmission line 14 is fitted in the specified groove 42, the power transmission line 14 is held at the center of the accommodation chamber 35 by the main body portion 41. In this case, the power receiving core 30 can move in the direction along the power transmission line 14.

  As shown in FIGS. 2 and 3, the defining member 40 includes guide portions 51 provided on both sides of the main body portion 41 in the direction along the power transmission line 14. In other words, the defining member 40 includes the guide portions 51 provided adjacent to both ends of the main body portion 41 in the direction along the power transmission line 14. One end 52 a in the direction along the power transmission line 14 communicates with the defining groove 42, and a guide groove 52 is formed in which the other end 52 b in the direction along the power transmission line 14 is opened. The guide groove 52 has a divergent shape from the one end 52a side toward the other end 52b side. Specifically, both the width and the depth of the guide groove 52 gradually increase from the one end 52a side toward the other end 52b side.

  The defining member 40 is composed of two parts (not shown) divided at the central portion in the direction along the power transmission line 14. In the regulating member 40, each part is assembled to the power receiving core 30 from both sides in the longitudinal direction of the power receiving core 30 (longitudinal direction of the base portion 31) so that the main body portion 41 enters the housing chamber 35. In this case, the regulating member 40 can be removed from the power receiving core 30 by pulling out each part from the power receiving core 30. Thereby, exchange of regulation member 40 is attained.

  As shown in FIGS. 4 and 5, the power transmission system 10 includes a movable holding unit 60 that holds the power transmission line 14 while being movable in a direction orthogonal to the direction along the power transmission line 14. The movable holding unit 60 includes an elastic member 61 attached to the ceiling and a base plate 62 suspended by the elastic member 61. The movable holding unit 60 includes an arm 63 that connects the base plate 62 and the power transmission line 14. The power transmission line 14 is suspended from the ceiling via the arm 63, the base plate 62, and the elastic member 61.

  In this case, the elastic member 61 can be expanded and contracted in a vertical direction which is a direction orthogonal to the installation surface G and a direction orthogonal to both the vertical direction and the direction along the power transmission line 14. Thereby, the power transmission line 14 is movable in a direction orthogonal to the direction along the power transmission line 14. The specific configuration of the elastic member 61 is arbitrary, but for example, a damper or a spring can be considered.

  Incidentally, the power transmission line 14 is fitted in a state where it is pushed upward in the vertical direction by the bottom surface 42 a of the defining groove 42. That is, as shown in FIG. 6, the movable holding unit 60 is configured such that the height position of the power transmission line 14 in a state where the power transmission line 14 is not fitted in the regulation groove 42 is higher than the height position of the bottom surface 42 a of the regulation groove 42. The power transmission line 14 is held in a lowered state.

  Further, since the one end 52 a of the guide groove 52 communicates with the defining groove 42, it can be said that the minimum height position P 1 of the bottom surface 42 a of the defining groove 42 is the minimum height position of the one end 52 a of the guide groove 52. Further, as shown in FIG. 6, the minimum height position P <b> 2 of the other end 52 b of the guide groove 52 is lower than the power transmission line 14.

Next, the operation of this embodiment will be described.
As shown in FIG. 6, when the automatic guided vehicle C travels along the route, the guide groove 52 of the power receiving unit 23 and the power transmission line 14 come into contact with each other. The power transmission line 14 is guided toward the regulation groove 42 while sliding in the guide groove 52 and moving in a direction perpendicular to the direction along the power transmission line 14 (width direction of the guide groove 52). The groove 42 is fitted. In a situation where the power transmission line 14 is fitted in the specified groove 42, the power transmission line 14 is arranged at the center of the accommodation chamber 35 when viewed from the direction along the power transmission line 14. The automatic guided vehicle C travels with the relative positional relationship between the power transmission line 14 and the power receiving core 30 maintained, and the power receiving coil 22 wound around the power receiving core 30 receives AC power from the power transmission line 14. Receive power.

According to the embodiment described in detail above, the following excellent effects are obtained.
(1) The power transmission system 10 includes a power transmission line 14 through which AC power is transmitted. The power transmission system 10 includes a power receiving device 21 mounted on the automatic guided vehicle C. The power receiving device 21 is wound around the power receiving core 30 and the power receiving core 30, and the power transmission line 14 is passed through the power receiving core 30. The receiving coil 22 which receives alternating current power from is provided. The power receiving device 21 defines a relative position between the power transmission line 14 and the power reception core 30 in at least one direction orthogonal to the direction along the power transmission line 14 in a state where the power reception core 30 is movable along the power transmission line 14. A defining member 40 is provided. Thereby, since the relative position of the power transmission line 14 and the power receiving core 30 in at least one direction orthogonal to the direction along the power transmission line 14 is defined by the defining member 40, the direction orthogonal to the direction along the power transmission line 14 The positional deviation between the two in at least one direction is restricted. Therefore, it is possible to suppress a decrease in transmission efficiency due to the positional deviation between the two. Further, since the power receiving core 30 is movable in the direction along the power transmission line 14, a situation occurs in which the power receiving core 30 and the power transmission line 14 are caught and the movement of the automatic guided vehicle C is hindered by the power receiving core 30. Hateful. Therefore, power transmission from the power transmission line 14 to the power receiving coil 22 can be performed while the automatic guided vehicle C moves.

  (2) The defining member 40 is a dielectric and is formed of a nonmagnetic material. Thereby, the AC power of the power transmission line 14 is not easily transmitted to the defining member 40. Moreover, the influence of the defining member 40 on the magnetic field generated by the AC power transmitted through the transmission line 14 is relatively small. Therefore, inconvenience due to the provision of the defining member 40, that is, inconvenience that power transmission from the power transmission line 14 to the power receiving coil 22 is inhibited by the defining member 40 can be suppressed.

  (3) The defining member 40 includes a main body 41 to which the power receiving core 30 is attached. The main body 41 has a defining groove 42 that extends in a direction along the power transmission line 14 and into which the power transmission line 14 is fitted. Is formed. Thereby, when the power transmission line 14 is fitted into the specified groove 42, at least one direction orthogonal to the direction along the power transmission line 14, specifically, the power transmission line 14 and the power receiving core 30 in the width direction of the specified groove 42, Relative position is defined. Thus, the relative position can be defined with a relatively simple configuration.

  (4) The power receiving core 30 defines a storage chamber 35 in which the power transmission line 14 can be stored, and the main body 41 is disposed in the storage chamber 35. Then, the main body 41 allows the power receiving core 30 to move along the power transmission line 14, while relative to the power transmission line 14 and the power receiving core 30 in at least one direction orthogonal to the direction along the power transmission line 14. The transmission line 14 is held in a state where the position is defined. Thereby, the position shift with the power transmission line 14 and the receiving core 30 can be suppressed suitably, suppressing the leakage of magnetic flux.

  (5) The defining member 40 includes guide portions 51 provided on both sides in the direction along the power transmission line 14 with respect to the main body portion 41, and one end 52 a in the direction along the power transmission line 14 is provided in the guide portion 51. A guide groove 52 is formed which communicates with 42 and has a divergent shape toward the other end 52b in the direction along the power transmission line 14 from the one end 52a. Thereby, when the automatic guided vehicle C enters the power transmission line 14, the power transmission line 14 easily enters the guide groove 52. Then, it is assumed that the power transmission line 14 that has entered the guide groove 52 is guided toward the specified groove 42 and fitted into the specified groove 42. Therefore, even if the power transmission line 14 and the specified groove 42 are displaced to some extent in a direction orthogonal to the direction along the power transmission line 14, the power transmission line 14 can be fitted into the specified groove 42.

  (6) The power transmission system 10 includes a movable holding unit 60 that holds the power transmission line 14 while being movable in a direction orthogonal to the direction along the power transmission line 14. Thereby, even if it is a case where the relative position of the power transmission line 14 and the receiving core 30 has shifted | deviated in the direction orthogonal to the direction along the power transmission line 14, the power transmission line 14 moves and it fits in the prescription | regulation groove | channel 42. be able to. Therefore, it is possible to suitably align the power transmission line 14 and the specified groove 42.

  (7) The height position of the bottom surface 42 a of the regulation groove 42, specifically, the minimum height position P 1 of the bottom surface 42 a of the regulation groove 42 is the transmission line 14 in a state where the transmission line 14 is not fitted in the regulation groove 42. It is set higher than the height position. Thereby, it is assumed that the power transmission line 14 is fitted in a state where it is pushed upward in the vertical direction by the bottom surface 42 a of the defining groove 42. Therefore, it is possible to avoid a situation in which the power transmission line 14 is disposed at a position floating with respect to the bottom surface 42a of the regulation groove 42, and the relative position between the power transmission line 14 and the power receiving core 30 is not a desired relative position. That is, by setting the height position as described above, it is possible to suppress the positional deviation between the power transmission line 14 and the power receiving core 30 in the depth direction of the defining groove 42 (specifically, vertically upward).

In addition, you may change the said embodiment as follows.
In the embodiment, both the width and the depth of the guide groove 52 gradually increase from the one end 52a side toward the other end 52b side, but this is not limitative. For example, the width of the guide groove gradually increases from the one end 52a side toward the other end 52b side, but may have a constant depth. On the contrary, the guide groove may have a constant width while gradually increasing in depth from the one end 52a side toward the other end 52b side.

  ○ The specific shape of the power receiving core 30 is arbitrary. For example, the power receiving core may be a shape in which the accommodation chamber 35 is not defined, for example, a T-shaped core in which the leg portions 32 and 33 of the power receiving core 30 are omitted and the cross-sectional shape is an inverted T shape. Further, the power receiving core may be an I-type core in which each leg portion 32 to 34 is omitted and the cross-sectional shape is I-shaped. In this case, the defining member may be formed according to the shape of the power receiving core such that the relative positional relationship between the power transmission line 14 and the power receiving core is a positional relationship suitable for power transmission. For example, when the power receiving core is I-type, the defining member may define the relative position between the power transmission line 14 and the power receiving core so that the power transmission line 14 is symmetrically arranged with respect to the power receiving core.

  As shown in FIG. 7, the guide groove 70 may have a reverse taper shape in which the width increases from the one end 70a side to the other end 70b side and the width increases from the bottom surface 70c to the upper side. In this case, if the power transmission line 14 and the guide groove 70 are excessively displaced due to an impact on the automatic guided vehicle C or the like, the power transmission line 14 is pushed upward, and the power transmission line 14 is detached from the power receiving unit 23. Thereby, the problem that the power transmission line 14 is twisted and cut by the power receiving unit 23 can be suppressed.

In the configuration in which the T-type is adopted as the power receiving core, it is preferable that the defining groove has an inversely tapered shape whose width increases as it goes upward from the bottom surface.
The specific configuration that defines the relative position between the power transmission line 14 and the power receiving core 30 in the direction orthogonal to the direction along the power transmission line 14 is not limited to the regulation groove 42 and is arbitrary. For example, the defining member may define the relative position by sandwiching the power transmission line 14. Further, the defining member is not limited to the configuration that directly holds the power transmission line 14. For example, in a configuration in which a convex portion is provided at a predetermined position of the arm 63, the defining member includes a grip portion in which a groove that fits the convex portion is formed, and the convex portion and the groove are fitted. Alternatively, the arm 63 may be gripped by the grip portion. Even in this case, at least the vertical displacement between the power transmission line 14 and the power receiving core 30 can be suppressed.

  The defining member 40 defines the relative position between the power receiving core 30 and the power transmission line 14 in two directions (vertical direction downward and left-right direction as viewed from the power transmission line 14) that are orthogonal to the direction along the power transmission line 14. However, the present invention is not limited to this, and the relative position in any one direction may be defined. In short, the defining member 40 only needs to define the relative position between the power transmission line 14 and the power receiving core 30 in at least one direction orthogonal to the direction along the power transmission line 14.

  The moving body is not limited to the automatic guided vehicle C as long as it moves along a predetermined route, and is arbitrary. For example, a forklift or a robot may be used. Further, the moving body is not limited to one that moves along a predetermined route. Further, the power transmission line 14 is not limited to the one that extends along the route of the moving body, and may be any one that extends in the direction along the installation surface G.

  Although the guide part 51 existed on both sides in the direction along the power transmission line 14 with respect to the main body part 41, the guide part 51 is not limited to this and may be configured to exist only in one of them. Further, the guide part 51 may be omitted. In short, the guide part 51 should just be provided adjacent to at least one end part among the both ends of the main body part 41 in the direction along the power transmission line 14.

  The bottom surface 42a of the regulation groove 42 is along the outer shape of the power transmission line 14, but is not limited thereto, and may be arbitrary as long as it can contact the power transmission line 14, for example, a parallel surface parallel to the installation surface G. There may be.

  O Although the power transmission line 14 was suspended from the ceiling, it is not restricted to this, The installation position of the power transmission line 14 is arbitrary. For example, the power transmission line 14 may be installed on a side surface of a building such as a factory, or may be installed on an installation surface G on which the automatic guided vehicle C travels.

  The power transmission line 14 is held in a state where it can move in a direction orthogonal to the direction along the power transmission line 14, but is not limited thereto, and may be held in a state where it cannot move. In this case, the power receiving unit 23 is preferably movable in a direction orthogonal to the direction along the power transmission line 14.

In the embodiment, the number of the power supply line 13 is one, but is not limited thereto, and a plurality of power supply lines 13 may be used.
Although the height position of the bottom face 42a of the regulation groove 42 was set higher than the height position of the power transmission line 14, it is not restricted to this, You may set both height positions to the same. However, in order to ensure that the power transmission line 14 is brought into contact with the bottom surface 42a of the specified groove 42, it is preferable to change the height position as described above.

  The power receiving device 21 may include a measurement unit that measures at least one of the voltage value and the current value of the AC power received by the power receiving coil 22. In this case, when the measurement result of the measurement unit is outside the predetermined allowable range, the power receiving device 21 wears the main body 41 and the relative position between the power transmission line 14 and the power reception core 30 is used for power transmission. You may alert | report that there exists a possibility of having shifted | deviated from the suitable position. Thereby, the replacement timing of the defining member 40 can be grasped.

Next, a preferable example that can be grasped from the embodiment and another example will be described below.
(B) The power transmission system according to claim 3 or 4, wherein a bottom surface of the specified groove is along an outer shape of the power transmission line.

  DESCRIPTION OF SYMBOLS 10 ... Electric power transmission system, 11 ... Power transmission apparatus, 14 ... Power transmission line, 21 ... Power reception apparatus, 22 ... Power reception coil, 30 ... Power reception core, 35 ... Storage chamber, 40 ... Regulation member, 41 ... Main-body part, 42 ... Regulation groove , 51 ... guide part, 52 ... guide groove, 60 ... movable holding part, C ... automatic guided vehicle (moving body), G ... installation surface.

Claims (7)

Power transmission equipment capable of outputting AC power;
A power receiving device mounted on a mobile body and capable of receiving the AC power from the power transmitting device;
In a power transmission system with
The power transmission device includes a power transmission line through which the AC power is transmitted,
The power receiving device is:
A power receiving core;
A power receiving coil wound around the power receiving core and receiving the AC power from the power transmission line via the power receiving core;
In a state where the power receiving core is movable along the power transmission line, a defining member that defines a relative position between the power transmission line and the power receiving core in at least one direction perpendicular to the direction along the power transmission line,
A power transmission system comprising:   The power transmission system according to claim 1, wherein the defining member is a dielectric and is formed of a nonmagnetic material.   The said regulation member has a main-body part to which the said power receiving core is attached, The said main part is formed in the direction along the said power transmission line, and the regulation groove | channel which the said power transmission line fits is formed. The power transmission system according to claim 1 or 2. The defining member includes a guide portion provided adjacent to at least one end portion of both end portions in the direction along the power transmission line in the main body portion,
The guide portion is formed with a guide groove having one end in a direction along the power transmission line communicating with the specified groove and having a shape spreading toward the other end in the direction along the power transmission line from the one end. The power transmission system according to claim 3. The power receiving core defines a storage room in which the power transmission line can be stored,
The defining member is disposed in the accommodation chamber,
The defining member allows a relative position between the power transmission line and the power reception core in at least one direction perpendicular to the direction along the power transmission line while allowing the power reception core to move along the power transmission line. The power transmission system according to any one of claims 1 to 4, wherein the power transmission line is held in a defined state.   The power transmission system according to any one of claims 1 to 5, further comprising a movable holding unit that holds the power transmission line in a state of being movable in a direction perpendicular to the direction along the power transmission line. A power receiving core, a power receiving coil wound around the power receiving core and receiving the AC power from the power transmission line through which the AC power is transmitted, via the power receiving core; A power receiving device having
In a state where the power receiving core is movable along the power transmission line, the power receiving core includes a defining member that defines a relative position between the power transmission line and the power receiving core in at least one direction perpendicular to the direction along the power transmission line. A power receiving device characterized by