Power transmission device

Abstract

A power transmission device (2) used in a power supply system (1) during travel for supplying power to a traveling vehicle (10) in a non-contact manner, the power transmission device being provided with: a power transmission coil (21) provided on a road (4) with reference to a guide line (51), which is a line used when a travel route is set using an HD map in a travel route setting device (111); power is supplied to a power receiving coil (35) of the vehicle in a non-contact manner; and a power transmission circuit (24) that supplies power to the power transmission coil.

Description

Citation of related applications

[0001] This application is based on Japanese Patent Application No. 2022-89578 filed on June 1, 2022, and the contents thereof are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a power transmission device in a running power supply system. Background Art

[0003] In recent years, electric vehicles have become increasingly popular. Electric vehicles use the electricity stored in the on-board battery to drive the motor, which rotates the wheels and travels. For such vehicles that use electrical energy for power, a driving power supply system that supplies power contactlessly has been developed using a technology called DWPT (dynamic wireless power converter: dynamic wireless charging). In this driving power supply system, power is transmitted contactlessly from a power transmission coil buried in the ground to a power receiving coil installed on the floor of the vehicle.

[0004] On the other hand, Patent Document 1 describes a map data generation device that provides dynamic mapping corresponding to static information provided by other vehicles or roadside devices in an automatic driving assistance system. Generally speaking, in an automatic driving system (ADS), a driving path is determined and vehicle driving control is performed based on lane connection lines (lane center lines) of high-precision three-dimensional map data (HD map: High-Definition Map). Prior art literature Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-30362 Summary of the invention

[0006] In the above-mentioned prior art, for example, when a vehicle is traveling on a driving path set by an automatic driving system, if the vehicle continues to travel in a state where the power receiving coil on the vehicle side is not opposite to the power transmitting coil on the road side but is offset from each other, a problem of not being able to charge occurs. In addition, in the above-mentioned power supply system during driving, since the power transmitting coil is buried underground, it cannot be simply moved. The present disclosure is proposed in view of the above-mentioned problems, and its purpose is to provide a power transmitting device that can fully supply power to a vehicle having a power receiving coil when the vehicle is traveling on a set driving path.

[0007] The present disclosure can be implemented in the following forms.

[0008] According to one embodiment of the present disclosure, a power transmission device is provided. The power transmission device is used in a driving power supply system that supplies power to a driving vehicle in a non-contact manner, and the power transmission device includes: a power transmission coil, which is set on a road based on a line, i.e., a guide line, used when setting a driving route using an HD map in a driving route setting device, and supplies power to a power receiving coil of the vehicle in a non-contact manner; and a power transmission circuit, which supplies power to the power transmission coil.

[0009] According to the above structure, the power transmission coil included in the power transmission device is set on the road based on the guide line used when setting the driving route using the HD map. Therefore, when the vehicle is traveling on the driving route set using the guide line, the power transmission coil of the power transmission device and the power receiving coil on the vehicle side are easy to face each other. Therefore, when the vehicle is traveling on the set driving route, the state in which the power transmission coil and the power receiving coil are relative to each other is maintained for a certain period of time, and stable power supply can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above objects, other objects, features and advantages of the present disclosure will become more apparent with reference to the accompanying drawings and the following detailed description. Figure 1 1 is a block diagram showing a schematic configuration of a running power supply system in the first embodiment of the present disclosure. Figure 2 1 is a block diagram showing a schematic structure of a vehicle control device according to a first embodiment of the present disclosure. Figure 3 It is a plan view schematically showing the embedding manner of the power transmission coil in the power transmission device according to the first embodiment. Figure 4 It is a plan view schematically showing a method of burying a power transmission coil in a power transmission device according to the second embodiment. Figure 5 It is a plan view schematically showing a method of embedding a power transmission coil in a power transmission device according to a third embodiment. Figure 6 It is a plan view schematically showing a method of burying a power transmission coil in a power transmission device according to a fourth embodiment. Figure 7 This is a schematic diagram for explaining the connection between the inverter and the power transmission coil in the power transmission device according to the fifth embodiment. DETAILED DESCRIPTION The following is based on Figure 1 to Figure 7 A plurality of embodiments of the present disclosure are described. A. First Implementation Method: A1. Structure of the power supply system 1 during driving: like Figure 1 As shown, a running power supply system 1 includes a power transmission device 2 installed on a road 4 and a power receiving device 3 on the vehicle 10 side. The running power supply system 1 is a system capable of wirelessly supplying power from the power transmission device 2 to the vehicle 10 while the vehicle 10 is running. The vehicle 10 is configured as an electric vehicle or a hybrid vehicle, for example.

[0012] The power transmission device 2 on the road 4 side includes: multiple power transmission coils 21; multiple power transmission circuits 24, the multiple power transmission circuits 24 apply AC voltage to the multiple power transmission coils 21 respectively to supply power; an external power supply 25 (hereinafter referred to as "power supply 25"), the external power supply 10 supplies power to the multiple power transmission circuits 24; and a power transmission control unit 26.

[0013] The plurality of power transmission coils 21 are arranged in a row along the traveling direction of the road 4. The power transmission coils 21 are divided into a plurality of sections. Figure 3 The power transmission circuit 24 is a circuit that converts the DC voltage supplied from the power supply 25 into a high-frequency AC voltage and applies it to the power transmission coil 21, and includes an inverter circuit, a filter circuit, and a resonant circuit. In this embodiment, the inverter circuit, the filter circuit, and the resonant circuit are well known, so the description is omitted.

[0014] The power supply 25 is a circuit that supplies a DC voltage to the power transmission circuit 24. For example, the power supply 25 supplies the power to the power transmission circuit 24 from the system power supply via a power factor improvement circuit (PFC). In addition, it is also possible to receive power from the system power supply through the power supply 25, distribute the 50 / 60Hz AC after voltage conversion to each power transmission circuit, and perform PFC and AC-DC conversion in each power transmission circuit. Regarding PFC, the illustration is omitted. The DC voltage output by the power supply 25 may not be a complete DC voltage, and may also contain a certain degree of variation (fluctuation). The power transmission control unit 26 enables the power transmission circuit 24 and the power transmission coil 21 to perform power transmission.

[0015] The vehicle 10 includes a main battery 31, an auxiliary battery 32, a power supply control unit 33, a power receiving circuit 34, a power receiving coil 35, a DC / DC converter circuit 36, an inverter circuit 37, a motor generator 41, auxiliary equipment 42, tires 43, and a power meter 44. In addition, the vehicle 10 includes an automatic driving control system 100 mainly related to automatic driving control (see Figure 2 ), for these structures, use Figure 2 This will be explained later.

[0016] The power receiving coil 35 is connected to the power receiving circuit 34, and the main battery 31, the high voltage side of the DC / DC converter circuit 36, and the inverter circuit 37 are connected to the output of the power receiving circuit 34. The auxiliary battery 32 and the auxiliary equipment 42 are connected to the low voltage side of the DC / DC converter circuit 36. The inverter circuit 37 is connected to the motor generator 41. In the first embodiment, the power receiving coil 35 is provided near the center of the width direction and the length direction of the vehicle 10. The power receiving coil 35 receives the power supplied from the power transmitting coil 21.

[0017] The power receiving circuit 34 includes a rectifier circuit that converts the AC voltage output from the power receiving coil 35 into a DC voltage. In addition, the power receiving circuit 34 may also include a DC / DC converter circuit that converts the DC voltage generated by the rectifier circuit into a voltage suitable for charging the main battery 31. The DC voltage output from the power receiving circuit 34 can be used to charge the main battery 31 or drive the motor generator 41 via the inverter circuit 37. In addition, by using the DC / DC converter circuit 36 ​​to step down the voltage, it can also be used for charging the auxiliary battery 32 and driving the auxiliary equipment 42.

[0018] The main battery 31 is a secondary battery that outputs a relatively high DC voltage for driving the motor generator 41. The motor generator 41 operates as a three-phase AC motor and generates a driving force for the vehicle 10 to travel. When the vehicle 10 decelerates, the motor generator 41 operates as a generator and generates a three-phase AC voltage. When the motor generator 41 operates as a motor, the inverter circuit 37 converts the DC voltage of the main battery 31 into a three-phase AC voltage and supplies it to the motor generator 41. When the motor generator 41 operates as a generator, the inverter circuit 37 converts the three-phase AC voltage output by the motor generator 41 into a DC voltage and supplies it to the main battery 31.

[0019] The DC / DC converter circuit 36 ​​converts the DC voltage of the main battery 31 into a DC voltage suitable for driving the auxiliary equipment 42 and supplies it to the auxiliary battery 32 and the auxiliary equipment 42. The auxiliary battery 32 is a secondary battery that outputs a DC voltage for driving the auxiliary equipment 42. The auxiliary equipment 42 includes peripheral devices such as an air conditioner, an electric power steering device, a headlight, a turn signal lamp, and a wiper of the vehicle 10, and various accessories of the vehicle 10. The DC / DC converter circuit 36 ​​may not be present.

[0020] The power meter 44 measures the amount of power supplied by the power receiving coil 35. The amount of power measured by the power meter 44 is stored in a storage unit (not shown). The amount of power measured by the power meter 44 may be displayed on a monitor screen installed in the vehicle (see Figure 2 The notification device 150 described later) etc. When receiving contactless power supply during driving, the power supply control unit 33 controls the power receiving circuit 34 to perform power reception.

[0021] A2. Structure of the automatic driving control system 100: like Figure 2 As shown, the vehicle 10 includes an automatic driving control system 100. The vehicle 10 is capable of automatic driving and manual driving. In automatic driving, even if the steering wheel used to operate the driving of the vehicle 10 is not operated by the driver, the vehicle 10 will automatically perform steering driving. In addition, in automatic driving, there is also a method in which the steering is performed by the driver and the acceleration and deceleration are automatically controlled. In manual driving, the driver operates the steering wheel, the accelerator pedal, and the brake pedal to steer or accelerate and decelerate, thereby driving the vehicle 10.

[0022] In this embodiment, the automatic driving control system 100 includes a vehicle control device 110, a peripheral sensor 120, an internal sensor 130, a road information storage unit 140, an automatic driving control unit 210, a driving force control ECU (Electronic Control Unit) 220, a braking force control ECU 230, and a steering control ECU 240. The vehicle control device 110, the automatic driving control unit 210, the driving force control ECU 220, the braking force control ECU 230, the steering control ECU 240 and the power supply control unit 33 are connected via the vehicle network 250.

[0023] The surrounding sensor 120 obtains the surrounding information outside the vehicle required for autonomous driving. The surrounding sensor 120 includes a camera 121 and an object sensor 122. The camera 121 captures the surroundings of the vehicle 10 and obtains an image. The object sensor 122 detects the surrounding conditions of the vehicle 10. As the object sensor 122, for example, an object sensor using reflected waves such as a laser radar, a millimeter wave radar, and an ultrasonic sensor can be cited.

[0024] The internal sensor 130 includes a vehicle position sensor 131, an acceleration sensor 132, a vehicle speed sensor 133, and a yaw rate sensor 134. The vehicle position sensor 131 detects the current position of the vehicle 10. As the vehicle position sensor 131, for example, a Global Navigation Satellite System(s) (GNSS) or a gyro sensor can be cited.

[0025] The acceleration sensor 132 is a detector that detects the acceleration of the vehicle 10. The acceleration sensor 132 includes, for example, a longitudinal acceleration sensor that detects the longitudinal acceleration in the front-rear direction of the vehicle 10 and a lateral acceleration sensor that detects the lateral acceleration of the vehicle 10. The vehicle speed sensor 133 measures the current travel speed of the vehicle 10. The yaw rate sensor 134 is a detector that detects the yaw rate (rotational angular velocity) of the vertical axis around the center of gravity of the vehicle 10. As the yaw rate sensor 134, for example, a gyro sensor can be used. The peripheral sensor 120 and the internal sensor 130 send the various acquired data to the vehicle control device 110.

[0026] The road information storage unit 140 stores detailed road information related to the road on which the vehicle 10 is scheduled to travel. The road information is static information contained in an HD map (High-Definition Map: high-precision three-dimensional map data). For example, the road information includes the number of lanes, lane width, center coordinates of each lane, stop line position, signal position, guardrail position, road slope, road type of curve or straight section, curvature radius of curve, length of curve section, etc. In addition, these road information and the like are appropriately updated to the latest information via a wide area network.

[0027] The notification device 150 is a device that notifies the occupants (mainly the driver) of the vehicle 10 of various information using images or sounds. The notification device 150 includes a display device and a speaker. As the display device, for example, a HUD (Head-Up Display) or a display device provided on the instrument panel can be used. In addition, "image" also includes animation and text.

[0028] The vehicle control device 110 includes a driving route setting unit 111, a peripheral information recognition unit 112, a notification unit 114, a control determination unit 115, and a communication unit 116. The vehicle control device 110 is composed of a central processing unit (CPU), a microcomputer composed of RAM and ROM, etc., and the microcomputer executes a pre-installed program to realize the functions of these parts. However, some or all of the functions of these parts can also be realized by hardware circuits.

[0029] The driving route setting unit 111 sets the route for the vehicle 10 to travel. More specifically, the driving route setting unit 111 sets a target driving route to a predetermined destination using the road information stored in the road information storage unit 140. The "target driving route" in this embodiment does not refer to a simple route to the destination, but rather a detailed route showing the driving lane or driving position in the road. The driving route setting unit 111 is equivalent to a "driving route setting device".

[0030] The surrounding information recognition unit 112 uses the detection signal of the surrounding sensor 120 to recognize the surrounding information of the vehicle 10. More specifically, the surrounding information recognition unit 112 recognizes the existence and position of the left and right dividing lines (hereinafter referred to as "lane markings") of the road on which the vehicle is traveling, the existence and position of the traffic lights, the indication content, the existence, position, size, distance, and direction of travel of other vehicles, the existence and actions of the drivers of other vehicles, and the existence and position of people around other vehicles as surrounding information based on the image captured by the camera 121 and the output signal of the object sensor 122. In addition, the surrounding information recognition unit 112 can also obtain part or all of this information through wireless communication with traffic lights, external servers, etc. and recognize it.

[0031] The notification unit 114 uses the notification device 150 capable of image display and sound output to notify the occupants of various information such as the driving route and vehicle position information. For example, the notification unit 114 notifies the occupants of the information of the hands-on request based on the driving condition of the vehicle 10 and in accordance with the processing of the control decision unit 115. The hands-on request refers to a request to switch from a state in which the driver does not hold the steering wheel, i.e., the hands-off state, to a hands-on state in which the driver holds the steering wheel during the execution of automatic driving. In addition, the notification unit 114 notifies the information of the current amount of electric power based on the driving condition of the vehicle 10 and in accordance with the processing of the control decision unit 115.

[0032] The control decision unit 115 decides the control content of the vehicle 10, and outputs it to the automatic driving control unit 210 through the vehicle network 250 to control the vehicle 10. The communication unit 116 obtains traffic information, weather information, accident information, obstacle information, traffic restriction information, etc. from an information center not shown in the figure through an antenna not shown in the figure. The communication unit 116 can also obtain various information from other vehicles through vehicle-to-vehicle communication. In addition, the communication unit 116 can also obtain various information from roadside devices installed at various locations on the road through road-to-vehicle communication.

[0033] The automatic driving control unit 210 is composed of a central processing unit (CPU), a microcomputer composed of RAM and ROM, etc., and the automatic driving function is realized by executing a pre-installed program by the microcomputer. The automatic driving control unit 210 controls, for example, the driving force control ECU 220, the braking force control ECU 230, and the steering control ECU 240 to drive along the driving path determined by the driving path setting unit 111. The automatic driving control unit 210 can also perform merging assistance when the vehicle 10 changes lanes to an adjacent lane, so that the vehicle 10 drives from the baseline of the lane being driven to the baseline of the adjacent lane.

[0034] The driving force control ECU 220 is an electronic control device that controls an actuator such as an engine that generates driving force for the vehicle 10. When the driver is driving manually, the driving force control ECU 220 controls the power source, which is the engine or the motor, according to the amount of operation of the accelerator pedal. On the other hand, when the automatic driving is performed, the driving force control ECU 220 controls the power source according to the required driving force calculated by the automatic driving control unit 210.

[0035] The braking force control ECU 230 is an electronic control device that controls a brake actuator that generates a braking force of the vehicle 10. When the driver is driving manually, the braking force control ECU 230 controls the brake actuator according to the amount of operation of the brake pedal. On the other hand, when the automatic driving is performed, the braking force control ECU 230 controls the brake actuator according to the required braking force calculated by the automatic driving control unit 210.

[0036] The steering control ECU 240 is an electronic control device that controls the motor that generates the steering torque of the vehicle 10. When the driver is driving manually, the steering control ECU 240 controls the motor according to the operation of the steering wheel, thereby generating an auxiliary torque for the steering operation. As a result, the driver can operate the steering device with a small amount of force and realize the steering of the vehicle 10. On the other hand, when the automatic driving is performed, the steering control ECU 240 controls the motor according to the required steering angle calculated by the automatic driving control unit 210 to perform steering.

[0037] In the automatic driving, the driving route setting unit 111 creates a driving plan for the vehicle 10 based on the road information stored in the road information storage unit 140, the current position detected by the vehicle position sensor 131, and the positions and speeds of other vehicles around the vehicle 10. The driving plan includes a turning plan and an acceleration and deceleration plan for the vehicle 10 until several seconds later.

[0038] Basically, the driving path is set using lane connection lines in such a way that the vehicle 10 drives in the center of the driving lane. Figure 3 As shown, the travel path is set so that the center line C in the width direction of the vehicle 10 is located on the lane connection line 51 (=lane center line).

[0039] A3. Details of the buried position of the power transmission coil 21: Next, the buried position in the road of the power transmission coil 21 possessed by the power transmission device 2 of the running power supply system 1 described in detail above will be described. The power transmission coil 21 is static information contained in the HD map, and is buried in the road based on the guide line used when setting the driving route using the HD map in the driving route setting unit 111. In the first embodiment, the guide line is the "lane connection line 51", and the power transmission coil 21 is buried at a position consistent with the lane connection line 51. In addition, in this way, the power transmission coil 21 set on the lane connection line 51 is also referred to as the "power transmission coil 21 for central power supply" below.

[0040] In addition, "buried in the road with the guide line as a reference" means not only including a method of burying the power transmission coil 21 in a manner consistent with the lane connection line 51, which is an example of the guide line, as in the first embodiment, but also including a method of burying the power transmission coil 21 at a position separated by a predetermined distance in the width direction of the lane with the lane connection line 51 as a reference line, as in the second embodiment described later. In the first embodiment, since the power receiving coil 35 is provided near the center of the vehicle 10, the power transmission coil 21 and the power receiving coil 35 are opposite to each other when the center line C in the width direction of the vehicle 10 is consistent with the lane connection line 51.

[0041] In addition, in general vehicles, there are many cases where the vehicle is slow or stopped in the section (tens of meters) before the intersection where the traffic light is located, so it is best to actively install the power transmission coil 21 in such a section. In addition, the latest information of the section where the power transmission coil 21 is buried is appropriately updated, for example, stored in the road information storage unit 140.

[0042] In the above-mentioned first embodiment, the power transmission coil 21 included in the power transmission device 2 is arranged on the road in a manner consistent with the lane connection line 51, which is a guide line used when setting a driving route using an HD map. Therefore, when the vehicle is traveling on the driving route set using the guide line, the power transmission coil 21 of the power transmission device 2 and the power receiving coil 35 on the vehicle 10 side are easy to be opposite. Therefore, the relative state of the power transmission coil 21 and the power receiving coil 35 is maintained for a certain period of time, and stable power supply can be performed. In addition, in automatic driving, normally, since it is generally controlled to travel in the center of the lane 53, it is possible to reliably charge while traveling on the set driving route. In addition, in manual driving, the driver usually travels in the center of the lane 53 more often, so stable charging is possible.

[0043] B. Second Implementation Method: Next, refer to Figure 4 In the second embodiment and the embodiments described below, the overall structure of the power supply system 1 during driving ( Figure 1) and the vehicle control device 110 ( Figure 2 ) is substantially the same as that of the above-mentioned first embodiment, and therefore, substantially the same parts are marked with the same figure marks and their descriptions are omitted.

[0044] like Figure 4 As shown in FIG. 1 , the second embodiment is different from the first embodiment described above in that the power receiving coil 35 is not provided near the center of the vehicle 10, but is provided inside the tire 43 or near the tire 43, and around the lower side of the suspension device included in the vehicle 10. In addition, in the power transmission device 2 of the second embodiment, the power transmission coil 21 is buried in two positions separated by a predetermined distance L from the lane connection line 51 to both sides in the width direction of the road in a manner that the two lines are parallel to each other when viewed from above. The interval between the two lines is substantially the same as the installation interval of the power receiving coil 35 in the width direction of the vehicle 10. That is, when the vehicle 10 is running in a state where the center line C in the width direction of the vehicle 10 coincides with the lane connection line 51, the power transmission coil 21 and the power receiving coil 35 face each other. In addition, in this way, the power transmission coil 21 provided at a predetermined distance from the lane connection line 51 is hereinafter also referred to as the "power transmission coil 21 for tire power supply".

[0045] According to the second embodiment, the same effects as those of the above-mentioned first embodiment can be achieved.

[0046] C. Third Implementation Method: Next, refer to Figure 5 The third embodiment is described below. Figure 5 As shown, the third embodiment is different from the second embodiment described above in that a power transmission coil 21 is also buried on the lane connection line 51. That is, the power transmission device 2 of the third embodiment includes a power transmission coil 21 for central power supply and a power transmission coil 21 for tire power supply. The method of burying the power transmission coil 21 for central power supply on the lane connection line 51 is the same as that of the first embodiment described above.

[0047] According to the third embodiment, the same effect as the first embodiment can be achieved. In addition, regardless of whether the power receiving coil 35 is set near the center or near the tire 43, it can correspond to a certain mode, so it can be implemented as a power transmission device 2 that can more reliably supply power to various vehicles 10. Figure 5 Although the vehicle 10 of the second embodiment is shown in FIG. 1 , electric power can be supplied even when the vehicle 10 of the first embodiment is running.

[0048] D. Fourth Implementation Method: Next, refer to Figure 6 The fourth embodiment is described below. Figure 6As shown, the fourth embodiment is different from the second embodiment described above in that a plurality of power transmission coils 21 are arranged in a row in the width direction of the lane 53. Figure 6 , an example is shown in which three power receiving coils 35 are arranged in the width direction with positions at predetermined distances L from the lane connection line 51 on both sides in the width direction of the road 4 as the center.

[0049] According to the third embodiment, the same effect as the first embodiment can be achieved. In addition, even when the running line of the vehicle 10 is displaced in the width direction within the lane 53, it is possible to ensure that the area in the power transmission device 2 that can transmit power is large, so that the power receiving coil 35 is easy to face the power transmission coil 21, and power can be supplied appropriately. In addition, power can be supplied to vehicles 10 with different vehicle widths, that is, the intervals between the left and right tires 43.

[0050] E. Fifth Implementation Method: Next, refer to Figure 7 The fifth embodiment is described below. Figure 7 As shown, in the fifth embodiment, the arrangement of the power transmission coil 21 and the power receiving coil 35 is the same as that of the third embodiment. In the power transmission circuit 24 of the power transmission device 2 of the fifth embodiment, a plurality of inverters 56 are provided between the connection path from the system power receiving terminal 55 constituted by a distribution board or the like to the power transmission coil 21. The inverter 56 converts the DC voltage supplied from the system power receiving terminal 55 into a high-frequency AC voltage.

[0051] The inverter 56 is connected to a plurality of (two in the present embodiment) power transmission coils 21 of different sizes, including a power transmission coil 21 for center power supply and a power transmission coil 21 for tire power supply. Furthermore, power can be transmitted from one inverter 56 to the plurality of power transmission coils 21. Power is sequentially supplied from the power transmission coil 21 to which power is supplied to the power receiving coil 35 according to the installation position of the power receiving coil 35 of the vehicle 10. In addition, Figure 7 In the example shown, one inverter 56 transmits power to a plurality of power transmission coils 21 arranged in an area approximately the same length as one vehicle 10. However, the number and installation area of ​​the power transmission coils 21 connected to one inverter 56 can be appropriately changed according to the amount of power that can be supplied at one time.

[0052] According to the fifth embodiment, the same effect as the first embodiment can be achieved. Moreover, by supplying power to multiple power transmission coils 21 from one inverter 56, a simple system structure can be achieved. That is, for example, in the case where separate inverters are provided for the power transmission coils 21 for center power supply and the power transmission coils 21 for tire power supply, the inverters not in use become wasteful, and the location where the inverters are installed also needs to be wider. In view of this, according to the fifth embodiment, the location where the inverters 56 are installed can be compactly suppressed, and the system can be easily constructed.

[0053] F. Other implementations: (F1) In each of the above embodiments, the vehicle 10 may not include the automatic driving control system 100. In the case of this structure, only the road information stored in the road information storage unit 140 may be used, and the road sequence to the destination may be set by the driving route setting unit 111. In addition, the driving route setting unit 111 may not be provided, and the driver may use a navigation application of a portable device such as a smartphone to drive on the driving route by manual driving. In this structure, a line corresponding to the setting position of the power transmission coil 21, that is, a lane connection line, may also be displayed on the portable device.

[0054] (F2) In the fifth embodiment, the arrangement of the power transmission coil 21 and the power receiving coil 35 is the same as in the third embodiment, but may be arranged in the first, second, and fourth embodiments, or in a different manner. In addition, power may be transmitted from one inverter 56 to three or more different types of power transmission coils 21.

[0055] (F3) In each of the above embodiments, an example in which the guide line is a "lane connection line 51" is shown, but the guide line is not limited to the lane connection line 51. As another example of a guide line, when the vehicle 10 is a route bus, a lane line along a bus lane that detours from a general lane to a bus stop, for example, a line approaching a sidewalk at a predetermined distance from the center line of the bus lane, etc. can also be a guide line. In this case, the travel path setting unit 111 sets the travel path so that the bus travels along the lane line. Therefore, by burying the power transmission coil 21 along the lane line, when the bus travels at a low speed near the bus stop, the bus approaches the sidewalk, making it easy to get on and off the bus at the bus stop, and charging can be performed efficiently.

[0056] (F4) In addition, as for the guide line, for example, when turning right at an intersection with two lanes on one side or a right turn lane, a curve connecting the lane connection line of the lane currently being driven and the lane connection line of the lane being driven at the right turn can also be a guide line. In this case, if the power transmission coil 21 is buried at the position of the curve, the chance of charging when waiting for a right turn can be increased.

[0057] The present disclosure is not limited to the above-mentioned embodiments, and can be implemented by various structures within the scope of the above-mentioned subject matter. For example, the technical features in each embodiment corresponding to the technical features in the method described in the invention content section can be appropriately replaced or combined to solve part or all of the above-mentioned technical problems, or to achieve part or all of the above-mentioned effects. In addition, the above-mentioned technical features can be appropriately deleted as long as they are not described as necessary structures in this specification. (Method 1) A power transmission device, The power transmission device is used in a running power supply system (1) for supplying power to a running vehicle (10) in a non-contact manner, and the power transmission device comprises: a power transmission coil (21) which is arranged on a road with reference to a guide line (51) used when setting a driving route using an HD map in a driving route setting device (111) and supplies power to a power receiving coil (35) of the vehicle in a non-contact manner; and A power transmission circuit (24) supplies electric power to the power transmission coil. (Method 2) The power transmission device according to aspect 1, wherein: The guide lines are lane connection lines included in the HD map as static information. (Method 3) A power transmission device according to aspect 2, wherein: A plurality of the power transmission coils are arranged along the road on the lane connection line. (Method 4) A power transmission device according to aspect 2, wherein: A plurality of the power transmission coils are provided along the road at positions separated by a predetermined distance from the lane connection line in a lane width direction. (Method 5) A power transmission device according to any one of aspects 1 to 4, wherein: A plurality of the power transmission coils are arranged in a row in the width direction of the lane. (Method 6) A power transmission device according to any one of aspects 1 to 5, wherein: Also includes an inverter (56), Electricity is supplied from the single inverter to the plurality of power transmission coils. (Method 7) A power transmission device according to aspect 6, wherein: The single inverter supplies power to the plurality of power transmission coils of different types. (Method 8) A power transmission device according to any one of aspects 1 to 7, wherein: The vehicle can be driven automatically or manually along the driving path set in the driving path setting device. It is possible to supply power to the above-mentioned vehicle capable of the above-mentioned automatic driving and the above-mentioned manual driving.

Claims

1. A power transmission device, the power transmission device being used in a running power supply system (1) for supplying power to a running vehicle (10) in a non-contact manner, the power transmission device comprising: a power transmission coil (21) which is arranged on a road with reference to a guide line (51) used when setting a driving route using an HD map in a driving route setting device (111) and supplies power to a power receiving coil (35) of the vehicle in a non-contact manner; as well as A power transmission circuit (24) supplies electric power to the power transmission coil.

2. The power transmission device according to claim 1, wherein: The guide lines are lane connection lines included in the HD map as static information.

3. The power transmission device according to claim 2, wherein: A plurality of the power transmission coils are arranged along the road on the lane connection line.

4. The power transmission device according to claim 2, wherein: A plurality of the power transmission coils are provided along the road at positions separated by a predetermined distance from the lane connection line in a lane width direction.

5. The power transmission device according to any one of claims 1 to 4, characterized in that: A plurality of the power transmission coils are arranged in a row in the width direction of the lane.

6. The power transmission device according to any one of claims 1 to 4, characterized in that: Also includes an inverter (56), Electric power is supplied from the single inverter to the plurality of power transmission coils.

7. The power transmission device according to claim 6, wherein: The single inverter supplies power to the plurality of power transmission coils of different types.

8. The power transmission device according to any one of claims 1 to 4, characterized in that: The vehicle can be driven automatically and manually along the driving path set in the driving path setting device, The vehicle capable of performing the automatic driving and the manual driving can be powered.

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