JP2023037037A - Non-contact power supply facility - Google Patents

Abstract

To facilitate inspection and maintenance of non-contact power supply facility.SOLUTION: A non-contact power supply facility 1 includes multiple coil units C arranged on a power supply lane R included in a power supply area 40 and multiple power conversion units T connected to each of the coil units C. The multiple coil units C are arranged at predetermined spacing along a direction in which the power supply lane R extends. The power conversion units T are arranged in a facility arrangement area 11 set adjacent to the power supply area 40.SELECTED DRAWING: Figure 1

Description

The present invention relates to contactless power supply equipment.

Patent Documents 1 to 5 disclose technologies related to contactless power supply equipment. As disclosed in Patent Documents 1 to 5, contactless power supply equipment is used to charge batteries of moving bodies such as electric vehicles and hybrid vehicles. Transmission of electric power from the contactless power supply equipment to the electric vehicle is realized between a power transmission coil provided in the contactless power supply equipment and a power reception coil provided in the electric vehicle. In addition to the power transmission coil, the wireless power supply equipment includes a power conversion unit that converts the power obtained from the power supply device into power suitable for contactless power transmission from the power transmission coil, and a control unit that controls these operations. Includes ancillary equipment.

JP 2013-192450 A JP 2014-147160 A JP 2014-220977 A JP 2015-19453 A JP 2016-116314 A

In recent years, non-contact power supply facilities have been studied assuming power supply to multiple targets. Such a facility includes a plurality of power transmission coils and a corresponding plurality of ancillary devices in order to simultaneously power a plurality of targets in a given area. If the number of targets to be transmitted simultaneously increases, the number of power transmission coils and auxiliary devices will also increase, and it is assumed that the load of inspection and maintenance of wireless power supply facilities such as adjustment work of auxiliary devices and inspection work of auxiliary devices will increase. be.

The present invention provides non-contact power feeding equipment that facilitates inspection and maintenance.

A contactless power supply equipment according to one aspect of the present invention includes a plurality of coil units arranged in power supply lanes included in a power supply area, and a plurality of power conversion units connected to each coil unit, wherein a plurality of coils The units are arranged at predetermined intervals along the direction in which the power supply lane extends, and the power conversion section is arranged in at least one of a pair of equipment layout areas set so as to sandwich the power supply area.

In the contactless power supply equipment, the power converter is arranged in at least one of the equipment layout areas. The equipment arrangement area is set so as to sandwich a power supply area including a plurality of power supply lanes in which a plurality of coil units are arranged. That is, the power converters are arranged on at least one of both sides of the power supply area, and are not arranged between the power supply lanes. With this arrangement, it is possible to access the power converter without crossing the power supply lane. As a result, it is possible to easily perform inspection and maintenance of the contactless power supply equipment including the power converter.

In one aspect, the coil unit has a coil for outputting electric power received from the power conversion unit, a reference direction determined based on the shape of the coil is set in the coil unit, and the reference direction is the power supply lane. A plurality of coil units arranged in the power supply lane along the extending direction may be arranged with a space therebetween along the reference direction. With this arrangement, a plurality of coil units can be preferably arranged in one power supply lane.

In one embodiment, the power supply area includes a first power supply lane that is a power supply lane and a second power supply lane adjacent to the first power supply lane, and the plurality of coil units are arranged in the first power supply lane. including a first coil unit and a plurality of second coil units arranged in a second power supply lane, wherein the plurality of first coil units are arranged relative to the plurality of second coil units in the direction in which the power supply lane extends, It doesn't have to be duplicated. With this arrangement, it is possible to increase the distance from the first coil unit arranged on the first power supply lane to the second coil unit arranged on the second power supply lane. Therefore, mutual interference between the first coil unit and the second coil unit can be suppressed.

ADVANTAGE OF THE INVENTION According to this invention, the non-contact electric power feeding equipment which can perform an inspection and maintenance easily is provided.

FIG. 1 : is the figure which planarly viewed the non-contact electric power supply equipment which concerns on embodiment. FIG. 2 is a side view of the contactless power supply equipment of FIG. 1 along the arrow II-II. 3 is an enlarged view of the coil unit of FIG. 1. FIG. FIG. 4 is a front view of the contactless power supply equipment of FIG. 1 along the arrow III-III. FIG. 5 is a diagram showing another arrangement form of the power conversion units included in the contactless power supply equipment of FIG. 1 . FIG.6(a), FIG.6(b) and FIG.6(c) are functional block diagrams which show the structure of non-contact electric power feeding equipment. FIG. 7 is a plan view of the non-contact power supply equipment of Modification 1. FIG. FIG. 8 is a plan view of the non-contact power supply equipment of Modification 2. As shown in FIG. 9A and 9B are diagrams for explaining the effects of the contactless power supply equipment of Modification 2. FIG. FIG. 10 is a plan view of the contactless power supply equipment of Modification 3. As shown in FIG. FIG. 11 is a plan view of the non-contact power supply equipment of Modification 4. As shown in FIG. FIG. 12 is a plan view of the contactless power supply equipment of Modification 5. As shown in FIG. FIG. 13 is a plan view of the contactless power supply equipment of Modification 6. As shown in FIG. FIG. 14 is a plan view of the non-contact power supply equipment of the comparative example.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and overlapping descriptions are omitted.

As shown in FIG. 1, the contactless power supply equipment 1 according to the embodiment supplies power to one or more objects. The object is a moving body equipped with a device that requires power supply, such as a battery that requires power supply for charging, or an air conditioner or refrigeration system that requires power supply for driving. For example, the target is an electric vehicle and a hybrid vehicle equipped with a battery. In the following description, an electric vehicle will be described as an example and will simply be referred to as "vehicle 50". Note that the target is not limited to vehicles. As a target, it is also possible to adopt a flying object such as a drone.

Also, in the following description, the terms “front-rear direction X” and “left-right direction Y” are used. The front-rear direction X refers to the direction in which the vehicle 50 moves. The vehicle 50 is stopped during power feeding. The front-rear direction X means the direction in which the vehicle 50 moves before and after the power feeding is started. A “left-right direction Y” refers to a direction perpendicular to the front-rear direction X. As shown in FIG.

The contactless power supply equipment 1 of the embodiment can supply power to up to nine stopped vehicles 50 . Two vehicles 50 are illustrated in FIG. In this case, the contactless power supply equipment 1 operates the coil unit C and the power converter T corresponding to the position where the vehicle 50 is stopped, and operates the coil unit corresponding to the position where the vehicle 50 is not stopped. The operation of C and power converter T is stopped. It should be noted that the number 9 is an example. The number of vehicles 50 to which the non-contact power supply equipment 1 can supply power may be appropriately set according to the specifications required for the equipment.

The number of vehicles 50 to which power is supplied is not particularly limited. That is, the non-contact power supply equipment 1 can supply power to only one vehicle 50, or can supply power to nine vehicles 50 at the same time. Furthermore, the timing of power supply to different vehicles 50 is also independent of each other. That is, power supply to one vehicle 50 is not affected by power supply to another vehicle 50 . In other words, in power feeding to a certain vehicle 50 , the timing to start power feeding and the timing to end power feeding can be determined without being affected by power feeding to another vehicle 50 .

Power is supplied to vehicle 50 in power supply area 40 . The place where the power supply area 40 is set can take various forms. For example, the power supply area 40 may be a place where target taxis wait. Also, the power supply area 40 may be a place where the target container truck waits. Also, the power supply area 40 may be a parking lot where a target private car is parked.

A maximum of nine vehicles 50 can be parked in the power supply area 40 . Note that this number of 9 is also an example. The number of vehicles 50 that can be parked in the power supply area 40 may be appropriately set according to the specifications required for the facility. The power supply area 40 includes three power supply lanes. In the following description, when the three power supply lanes need to be distinguished from each other, the power supply lanes R1, R2, and R3 are denoted by reference numerals. In addition, when it is not necessary to distinguish between the three power supply lanes, the reference symbol of power supply lane R is simply attached.

The power supply lane R is a lane extending in the front-rear direction X. As shown in FIG. Several stop positions are set in the power supply lane R as positions at which the vehicle 50 to which power is to be supplied should stop. The stop position may be indicated by, for example, a stop line or a frame drawn on the power supply lane R.

The feed lanes R are separated from each other in the horizontal direction Y. As shown in FIG. For example, one feed lane R1 (first feed lane) does not overlap another adjacent feed lane R2 (second feed lane). A predetermined space may be provided between the power supply lanes R1 and R2, or the power supply lanes R1 and R2 may be in contact with each other. A lane width RW of the power supply lane R is at least greater than the vehicle width 50W of the vehicle 50 . As described above, the type of target vehicle 50 is limited depending on the form of the place where the power supply area 40 is set. In such a case, lane width RW of power supply lane R may be set according to the limited type of vehicle 50 . For example, if the power supply area 40 is a place where the target taxi waits, the vehicle width 50W is the vehicle width of the taxi, and the lane width RW should be larger than the vehicle width of the taxi. If it is a place where the target container truck waits, the vehicle width 50W is the vehicle width of the container truck, and the lane width RW is larger than the vehicle width of the container truck. The lane width RW may be the same for all power supply lanes R, or may be different. For example, the lane width RW of the power supply lane R1 and the power supply lane R2 may be the same or different. Also, the length of the power supply lane R is at least longer than the total length of the three vehicles 50 .

The power supply area 40 is sandwiched between the pair of equipment placement areas 11 and 12 from the left and right. More specifically, one equipment placement area 11 is adjacent to the leftmost (or right) power supply lane R1 among the plurality of power supply lanes R from the left (or from the right). Similarly, the other equipment placement area 12 is adjacent to the right (or left) power supply lane R3 among the plurality of power supply lanes R from the right (or left). The facility placement areas 11 and 12 are located outside the power supply area 40 and the power supply lanes R1, R2, and R3 included in the power supply area 40, and are not set between the power supply lanes R1, R2, and R3.

According to such facility layout areas 11 and 12, since the facility layout areas 11 and 12 are not set between the power supply lanes R1, R2, and R3, it is possible to narrow the distance between the power supply lanes R. become. As a result, the width of the power feeding area 40 including the plurality of power feeding lanes R can be narrowed. That is, the area of the power feeding area 40 can be narrowed. In other words, the number of vehicles 50 to which power can be supplied per unit area can be increased.

The non-contact power supply equipment 1 transmits power received from the power supply device 30 to the vehicle 50 in a non-contact manner. The power supply device 30 may be, for example, a power system, or may be a power supply source independent of the power system. For example, it may be a photovoltaic power generation facility that is not connected to the power system. Note that the power supply device 30 is not a component of the contactless power supply equipment 1 .

The contactless power supply equipment 1 has a plurality of power converters and a plurality of coil units. In the following description, when it is necessary to distinguish among the plurality of power conversion units, they are denoted by the power conversion units T1, T2, and T3. When there is no need to distinguish among the plurality of power converters, the reference numeral "T" is attached. Similarly, when it is necessary to distinguish between a plurality of coil units, reference numerals C1, C2, and C3 are attached. When there is no need to distinguish among the plurality of coil units, the reference numeral "C" is used. The power converter T1 corresponds to the coil unit C1 (first coil unit) arranged on the power supply lane R1. Similarly, power converters T2 and T3 correspond to coil units C2 (second coil units) and C3 arranged on power supply lanes R2 and R3, respectively.

The power converter T is connected to each coil unit C. As shown in FIG. That is, one power converter T is connected to one coil unit C. As shown in FIG. The power converter T converts the power received from the power supply device 30 into power suitable for non-contact power transmission from the coil unit C (for example, high-frequency AC power with a frequency of 100 kHz). In the embodiment, a main cable 31 is connected to the power supply device 30 . A plurality of branch cables 32 are branched from the main cable 31 . The tip of the branch cable 32 is connected to each power converter T. As shown in FIG. Note that the connection configuration between the power supply device 30 and the plurality of power converters T is not limited to the example shown in FIG. The main cable 31 and branch cable 32 may be embedded in the road surface RG (see FIG. 2). Also, the main cable 31 and the branch cable 32 may be installed in a groove provided underground. Furthermore, if the main cable 31 and the branch cable 32 have sufficient strength to prevent the vehicle 50 from running over them, they may be installed on the road surface RG.

The coil unit C transmits power to a power receiving coil 51 mounted on the vehicle 50 by contactless power supply. The coil unit C includes at least a coil 21 (see FIG. 3). The coil 21 is housed in a housing (not shown). In addition to the coil 21, the housing may also accommodate components that make up the coil unit C, such as a ferrite plate, which is a magnetic member, and a resonance circuit. The coil 21 is a spiral coil, also called a spiral coil or a circular coil, in which a conducting wire such as litz wire is wound. Note that the coil 21 may be of another type. For example, a solenoid type coil may be employed as the coil 21 .

One coil unit C can supply power to one vehicle 50 . Therefore, the contactless power supply equipment 1 capable of supplying power to nine vehicles 50 includes nine coil units C. As shown in FIG. The coil unit C is arranged on the feed lane R. For example, the coil unit C is arranged substantially in the center of the lane width RW of each power supply lane R. Furthermore, as shown in FIG. 2, the coil unit C1 is embedded in the road surface RG. That is, the coil unit C1 does not protrude from the road surface RG.

Note that the coil unit C does not necessarily have to be embedded in the road surface RG. For example, if a pole prohibiting a lane change is provided between the power supply lanes R, the vehicle 50 proceeds straight through the power supply lanes R. In such an equipment configuration, the possibility of the vehicle 50 stepping on the coil unit C is low, so the coil unit C may be arranged so as to protrude from the road surface RG. That is, the coil unit C may be wholly disposed on the road surface RG, or may be partly embedded below the road surface RG and another part may protrude from the road surface RG. Furthermore, the arrangement may be such that some of the plurality of coil units C protrude from the road surface RG and the others do not protrude from the road surface RG. Further, the coil unit C may, for example, protrude from the road surface RG so as not to protrude from the road surface RG when power is not supplied, and to approach the power receiving coil 51 of the vehicle 50 when power is supplied.

By the way, as shown in FIG. 3, the coil unit C1 may be oriented. Specifically, the coil unit C1 has an orientation that is preferably parallel to the front-rear direction X. As shown in FIG. The orientation of the coil unit C<b>1 is defined by the shape of the coil 21 . In other words, the orientation of the coil unit C1 is not defined by the shape of the housing that accommodates the coil 21 . When the coil unit C1 has an orientation, the shape of the coil 21 is not a perfect circle but an ellipse. The coil unit C1 is arranged so that the short axis SX of the coil 21 faces the front-rear direction X. As shown in FIG. With such an arrangement, since the long axis LY of the coil 21 extends along the left-right direction Y, it is possible to secure an allowable width for positional deviation of the vehicle 50 in the left-right direction Y with respect to the coil unit C1. In this example, the short axis SX of the coil 21 is arranged to face the front-rear direction X, but the direction defined by the shape of the coil 21, which is different from the short axis SX, faces the front-rear direction X. may be arranged as

The coil units C are arranged apart from each other in the front-rear direction X in the respective power supply lanes R1, R2, and R3. For example, the interval CV between the coil units C3 arranged in the power supply lane R3 is at least longer than the total length of the vehicle 50, 50V. According to such a setting, the vehicles 50 adjacent to each other in the front-rear direction X, which stop and receive power from the coil unit C3, do not come into contact with each other. Also, the interval CV between the coil units C3 is longer than the length of the power converter T in the front-rear direction X. As shown in FIG. The interval CV between the coil units C3 only needs to satisfy the above setting. good.

In addition, the position of the coil unit C arranged in the power supply lane R does not overlap with the position of the coil unit C arranged in another power supply lane R in the front-rear direction X. As shown in FIG. In other words, when an imaginary line K1 parallel to the left-right direction Y is set, the plurality of coil units C are not located on the imaginary line K1. When another imaginary line K2 passing through a plurality of coil units C provided in different feed lanes R is set, the imaginary line K2 is inclined with respect to the left-right direction Y of the feed lane R. That is, the distance CW1 between the two coil units C arranged on the virtual line K2 is the distance between the two coil units C when it is assumed that both are arranged on the virtual line K1 (see symbol C2A). Longer than CW2.

The power converter T is arranged in the facility arrangement area 11 . That is, the power converter T is not arranged in the power supply area 40 and the power supply lane R included in the power supply area 40 . Also, the facility placement area 11 is not set between the power supply lanes R1 and R2. Similarly, the equipment placement area 11 is not set between the power supply lanes R2 and R3. Therefore, the power converter T is not set between the power supply lanes R1 and R2 and between the power supply lanes R2 and R3. The power converter T is arranged outside the power supply area 40 along the power supply lane R1.

There are no particular restrictions on the mode of arrangement of the power converters T in the facility arrangement area 11 . For example, the power converter T1 may be placed on the ground G as shown in FIG. That is, the power converter T1 is placed on the ground G without being buried underground. According to such an arrangement, it is possible to easily access various components that constitute the power conversion unit T1. Therefore, the contactless power supply equipment 1 can be easily inspected and maintained.

Moreover, as shown in FIG. 5, the power conversion unit T1 may be arranged underground without appearing on the ground surface G. The power converter T1 is arranged in a basement 11a having an opening on the ground, and the opening is closed by a lid 11b. According to such arrangement, the power conversion unit T1 does not protrude from the ground G.

Here, the equipment placement areas 11 and 12 are set so as to sandwich the power feeding area 40 . The power converter T may be placed in at least one of these facility placement areas 11 and 12 . In the embodiment, all the power converters T are arranged in one facility arrangement area 11 . In other words, the power converter T is not arranged in the other facility arrangement area 12 . An example of arranging the power converters T in both of the equipment arrangement areas 11 and 12 will be described in modified examples 4 and 5 below.

One power converter T is connected to one coil unit C as described above. Therefore, the position where the power conversion section T is arranged is determined so that the distance from the power conversion section T to the coil unit C is the shortest. For example, the power converter T and the coil unit C may be arranged on a virtual line K1 parallel to the left-right direction Y. Then, since the coil units C are separated from each other in the front-back direction X, the power converters T are also separated from each other in the front-back direction X. Furthermore, the coil units C1, C2, and C3 arranged in the power supply lanes R1, R2, and R3 different from each other do not overlap each other in the front-rear direction X. Therefore, if the cables are arranged parallel to the left-right direction Y from the respective coil units C1, C2, and C3, the power converters T do not overlap each other. With such an arrangement, the length of the cable connecting the power converter T to the coil unit C can be shortened. As a result, power loss due to the electrical resistance of the cable can be reduced.

The configurations of the power conversion section T and the coil unit C will be described in more detail. The configuration of the power converter T and the coil unit C can take several forms.

Several electrical components are connected between the power supply 30 and the coil 21, as shown in FIGS. 6(a), 6(b) and 6(c). As these components, a rectifier 22, a PFC (Power Factor Correction) circuit 23, an inverter 24, and a filter 25 are exemplified. An electrical component other than these may be included between the power supply device 30 and the coil 21 .

The rectifying section 22 is connected to the power supply device 30 and the PFC circuit 23 . The rectifying unit 22 rectifies the power received from the power supply device and provides the PFC circuit 23 with the rectified power. The PFC circuit 23 is connected to the rectifying section 22 and the inverter 24 . The PFC circuit 23 improves the power factor by shaping the waveform of the current received from the rectifying section 22 and provides it to the inverter 24 . The inverter 24 is connected to the PFC circuit 23 and the filter 25 . The inverter 24 converts the power received from the PFC circuit 23 into power of a predetermined frequency, and supplies the power to the filter 25 . Filter 25 is connected to inverter 24 and coil 21 . The filter 25 removes harmonic components contained in the power received from the inverter 24 and supplies the power to the coil 21 .

A power conversion section T and a coil unit C are configured including these components. A device that includes the coil 21 is the coil unit C, and a device that does not include the coil 21 is the power converter T.

For example, as shown in FIG. 6A, in a first mode, the power converter T includes a rectifier 22, a PFC circuit 23, and an inverter 24, and the coil unit C includes a filter 25 and a coil 21. may be Further, as shown in FIG. 6B, as a second mode, the power conversion section T includes a rectification section 22 and a PFC circuit 23, and the coil unit C includes an inverter 24, a filter 25, and a coil 21. good. Furthermore, as shown in FIG. 6(c), as a third mode, the power conversion section T includes a rectifying section 22, and the coil unit C includes a PFC circuit 23, an inverter 24, a filter 25, and a coil 21. good.

Note that the power conversion section T and the coil unit C may appropriately include other elements in addition to the elements described above, if necessary. Moreover, some of the above-described elements of the power conversion section T and the coil unit C may be omitted as appropriate.

<Effect>
The contactless power supply equipment 1 is connected to a plurality of coil units C arranged in a power supply lane R included in the power supply area 40, and is connected to each coil unit C, and transmits power received from the power supply device 30 to the coil units C in a non-contact manner. and a plurality of power converters T for converting power suitable for contact power transmission. The plurality of coil units C are arranged at predetermined intervals along the direction in which the feed lane R extends, which is the front-rear direction X. As shown in FIG. The power conversion unit T is arranged in one of the pair of facility arrangement areas 11 and 12 set so as to sandwich the power supply area 40 .

In the contactless power supply equipment 1 , the power converter T is arranged in the equipment arrangement area 11 . This facility layout area 11 is one of a pair of facility layout areas 11 and 12 set so as to sandwich a power feeding area 40 including a plurality of power feeding lanes R in which a plurality of coil units C are arranged. In other words, the power conversion unit T is arranged on one of both sides of the power supply area 40 and is not arranged between the power supply lanes R.

For example, in the illustration of the comparative example shown in FIG. 14, three facility placement areas 11, 11A, and 11B are set. The equipment placement area 11A is set between the power supply lanes R1 and R2. The equipment placement area 11B is set between the power supply lanes R2 and R3. Power converters T2 and T3 of non-contact power supply equipment 200 of the comparative example are arranged in equipment arrangement areas 11A and 11B, respectively. According to such a configuration, maintenance personnel need to cross the power supply lane R1 when performing inspection or maintenance of the power converter T2. Similarly, when inspecting or maintaining the power converter T3, maintenance personnel need to cross the power supply lane R3. In addition, when the vehicle 50 is stopped, the maintenance personnel need to weave through the gaps between the vehicles 50 to move.

On the other hand, according to the contactless power supply equipment 1, it is possible to access all the power converters T without crossing the power supply lane R. As a result, inspection and maintenance of the contactless power supply equipment 1 including the power converter T can be easily performed.

The coil unit C has a coil 21 that is a power transmission coil that wirelessly feeds power received from the power converter T. As shown in FIG. A reference direction (short axis SX in this example) determined based on the shape of the coil 21 is set in the coil unit C. As shown in FIG. The short axis SX extends along the direction in which the feed lane R extends (the front-rear direction X). A plurality of coil units C arranged in the power supply lane R are arranged at intervals in the front-rear direction X. As shown in FIG. According to this arrangement, a plurality of coil units C can be arranged in one feed lane R.

The feed area 40 includes feed lanes R1, R2, and R3. The plurality of coil units C includes a plurality of coil units C1 arranged on the power supply lane R1, a coil unit C2 arranged on the power supply lane R2, and a coil unit C3 arranged on the power supply lane R3. The coil units C1, C2, and C3 do not overlap each other in the front-rear direction X. With this arrangement, it is possible to increase the distance from the coil unit C1 arranged on the power supply lane R1 to the coil unit C2 arranged on the power supply lane R2. Therefore, mutual interference between the coil unit C1 and the coil unit C2 can be suppressed. Specifically, each coil unit C generates a magnetic field for contactless power supply, and interference between the magnetic fields generated by the coil units C1 and C2 arranged on the adjacent power supply lanes R1 and R2 can be suppressed. As a result, it is possible to suppress a decrease in power supply efficiency due to interference between magnetic fields.

The contactless power supply equipment of the present invention is not limited to the above embodiments. Specific aspects of the contactless power supply equipment of the present invention may be changed as appropriate within the technical scope without departing from the gist of the claims.

<Modification 1>
The non-contact power supply equipment 1A of Modification 1 shown in FIG. 7 may include a housing 26 that individually accommodates the power converters T1, T2, and T3. This housing 26 accommodates each component (see FIG. 6) that constitutes the power converters T1, T2, and T3. Further, in Modification 1, one housing 26 accommodates, for example, the power converter T1. According to such a configuration, the number of vehicles 50 to which power can be supplied from the contactless power supply equipment 1A can be set in units of one. Therefore, the number can be finely set according to the specifications required for the contactless power supply equipment 1A.

<Modification 2>
A non-contact power feeding facility 1B of Modification 2 shown in FIG. 8 may include a housing 26A that accommodates the power converters T1, T2, and T3. The housing 26 of Modification 1 accommodates the power converters T1, T2, and T3 individually, while the housing 26A of Modification 2 accommodates two or more power converters T1, T2, and T3. In the illustration of FIG. 8, one housing 26A accommodates three power converters T1, T2, and T3. Also, the connection configuration from the power supply device 30 to the power converters T1, T2, and T3 is different from that of the embodiment. In the non-contact power feeding equipment 1B of Modification 2, three branch cables 33 are branched from the main cable 31 . Further, three branch cables 34 are branched from each of the branch cables 33 . The branch cables 34 are connected to the power converters T1, T2, and T3, respectively. According to such a configuration, as shown in FIG. 9, the number of power conversion units T1, T2, and T3 accommodated in the housing 26A can be added as one unit (see symbol TS). . Therefore, it is possible to easily increase the number of devices to which power can be supplied, which is required for the contactless power supply equipment 1B.

<Modification 3>
1 C of non-contact electric power supply of the modification 3 shown in FIG. 10 may be provided with the housing|casing 26B which accommodates the power converter parts T1, T2, and T3. The housing 26 of Modification 1 accommodates any one of the power converters T1, T2, and T3, while the housing 26B of Modification 3 accommodates two or more power converters T1, T2, and T3. . More specifically, the housing 26B of Modification 3 accommodates all the power converters T1, T2, and T3 that constitute the contactless power supply equipment 1C.

<Modification 4>
Contactless power supply equipment 1D of modification 4 shown in FIG. In the illustration of FIG. 11 , the power converter T1 is placed in one of the facility placement areas 11 . Similarly, the power converter T2 is also placed in one of the equipment placement areas 11. FIG. On the other hand, the power conversion unit T3 is arranged in the other facility arrangement area 12 . A second main cable 35 is connected to the power supply device 30 . The main cable 35 then traverses the feeding area 40 . Three branch cables 36 are branched from the main cable 35 at the crossing point. The power converters T3 are connected to the branch cables 36, respectively.

In other words, the power converters T1, T2, and T3 receive power from one common power supply device 30 . According to such an arrangement, it is possible to shorten the length of the cables connecting the coil units C1, C3 and the power converters T1, T3 in the power supply lanes R1, R3 at both ends arranged in the power supply area 40. . Furthermore, since the power converters T1, T2 and T3 are arranged in two areas, it is possible to set the area occupied by one power converter T1, T2 and T3 to be large. For example, large power converters T1, T2, and T3 with higher outputs can be installed.

<Modification 5>
A contactless power supply facility 1E of Modification 5 shown in FIG. 12 has power conversion units T1, T2, and T3 arranged in a pair of facility placement areas 11 and 12, respectively, similarly to the contactless power supply facility 1D of Modification 4. . On the other hand, in the non-contact power supply equipment 1D of the modification 4, power is supplied from one power supply device 30 to all the power conversion units T1, T2, and T3, whereas in the contactless power supply equipment 1E of the modification 5 , two power supplies 30, 37 supply power to the power converters T1, T2, T3. Specifically, one power supply device 30 provides electric power to the power converters T1 and T2 arranged in one equipment arrangement area 11 . The other power supply device 37 supplies power to the power conversion unit T3 arranged in the other facility installation area 12 via the main cable 38 and the branch cable 39 . Such a configuration eliminates the need for a cable (main cable 35 in FIG. 11) arranged to cross the power supply area 40 . Therefore, it is possible to reduce the work load of laying the cable and reduce the labor required for maintenance and inspection of the cable.

Furthermore, in the non-contact power supply equipment 1E of the modification 5, the electric power supplied to each of the power supply devices 30 and 37 may be varied. For example, assume that the output of power supply 37 is greater than the output of power supply 30 . In this case, the output of the coil unit C3 can be made larger than the outputs of the coil units C1 and C2.

<Modification 6>
A non-contact power supply facility 1F of Modification 6 shown in FIG. 13 has a configuration similar to that of the non-contact power supply facility 1 of the embodiment. On the other hand, in the non-contact power supply equipment 1 of the embodiment, power is supplied to the stopped vehicle 50, whereas this non-contact power supply equipment 1F supplies power to the vehicle 50 in motion. In this case, for example, in the contactless power supply equipment 1F, for example, the interval between the plurality of coil units C1 arranged on the same power supply lane R1 is different from the interval between the coil units C1 in the contactless power supply equipment 1. .

1, 1A, 1B, 1C, 1D, 1E, 1F Contactless power supply equipment 11, 12 Equipment placement area 21 Coils 30, 37 Power supply device 40 Power supply area C1 Coil unit (first coil unit)
C2 coil unit (second coil unit)
R1 power supply lane (first power supply lane)
R2 feed lane (second feed lane)
T, T1, T2, T3 power converter

Claims (3)

a plurality of coil units arranged in power supply lanes included in the power supply area;
and a plurality of power conversion units connected to each of the coil units,
The plurality of coil units are arranged at predetermined intervals along the direction in which the power supply lane extends,
The contactless power supply equipment, wherein the power conversion unit is arranged in at least one of a pair of equipment layout areas set so as to sandwich the power supply area. The coil unit has a coil for outputting the power received from the power conversion unit,
A reference direction determined based on the shape of the coil is set in the coil unit,
The reference direction is along the direction in which the power supply lane extends,
The contactless power supply equipment according to claim 1, wherein the plurality of coil units arranged in the power supply lane are spaced apart from each other along the reference direction. The power supply area includes a first power supply lane, which is the power supply lane, and a second power supply lane adjacent to the first power supply lane,
The plurality of coil units includes a plurality of first coil units arranged in the first power supply lane and a plurality of second coil units arranged in the second power supply lane,
3. The contactless power supply equipment according to claim 1, wherein said plurality of first coil units do not overlap with said plurality of second coil units in the direction in which said power supply lane extends.

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