Ground power supply device, mobile body and abnormality determination device

Abstract

To make it possible to determine, when a power transmission abnormality occurs, whether the cause lies in a power transmitting device or a power receiving device.SOLUTION: A ground power feeding device 2 includes: a power transmitting device 22 for performing contactless power supply to a mobile body 3 equipped with a power receiving device 31; a communication device 23 for directly or indirectly communicating with the mobile body 3; and a control device 20. The control device 20 is configured to count the number of occurrences of power transmission abnormalities occurred between the power transmitting device 22 and the power receiving device 31 or the number of reception times of abnormality occurrence notifications transmitted from the mobile body 3 when the occurrence of a power transmission abnormality is detected in the mobile body 3, and to determine that an abnormality has occurred in the power transmitting device 22 when the number of occurrences or the number of reception times reaches a predetermined number or more.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a ground power supply device, a moving body, and an abnormality determination device. [Background technology]

[0002] Patent Document 1 discloses a conventional contactless power supply system configured to supply power contactlessly from a power transmitting device installed on a road to a power receiving device installed in a vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-167898 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a contactless power supply system, when an abnormality occurs in power transmission between a power transmitting device and a power receiving device, it is necessary to determine whether the cause is the power transmitting device or the power receiving device.

[0005] The present invention has been made in response to such problems, and aims to determine, when an abnormality occurs in power transmission between a power transmitting device and a power receiving device, whether the cause of the abnormality lies in the power transmitting device or the power receiving device. [Means for solving the problem]

[0006] In order to solve the above problems, a ground power supply device according to an embodiment of the present invention includes a power transmission device for contactlessly supplying power to a mobile body having a power receiving device, a communication device for directly or indirectly communicating with the mobile body, and a control device. The control device is configured to count the number of power transmission anomalies that have occurred between the power transmission device and the power receiving device, or the number of times that an anomaly occurrence notification transmitted from the mobile body when an occurrence of a power transmission anomaly is detected in the mobile body is received, and to determine that an anomaly has occurred in the power transmission device when the number of occurrences or the number of times that the notification is received reaches a predetermined number or more.

[0007] In order to solve the above problem, a mobile body according to an embodiment of the present invention includes a power receiving device for receiving contactless power supply from a power transmitting device of a ground power supply device, a communication device for communicating directly or indirectly with the ground power supply device, and a control device. The control device is configured to count the number of power transmission anomalies that have occurred between the power transmitting device and the power receiving device, or the number of times that an anomaly occurrence notification transmitted from the ground power supply device when an occurrence of a power transmission anomaly is detected in the ground power supply device is received, and to determine that an anomaly has occurred in the power receiving device when the number of occurrences or the number of receptions reaches or exceeds a predetermined number.

[0008] In addition, in order to solve the above-mentioned problems, according to one aspect of the present invention, an abnormality determination device for determining an abnormality in a power transmission device of a contactless power supply system is configured to count the number of abnormalities in power transmission that occur between the power transmission device and a power receiving device that contactlessly receives power transmitted from the power transmission device, or the number of times that a notification of the occurrence of such an abnormality is received from the outside, and to determine that an abnormality exists in the power transmission device when the number of such abnormalities reaches a predetermined number or more.

[0009] In addition, in order to solve the above problems, according to one aspect of the present invention, an abnormality determination device for determining an abnormality in a power receiving device of a contactless power supply system is configured to count the number of abnormalities in power transmission that occur between the power receiving device and a power transmitting device that transmits power contactlessly to the power receiving device, or the number of times that a notification of the occurrence of such an abnormality is received from the outside, and to determine that an abnormality exists in the power receiving device when the number of such abnormalities reaches or exceeds a predetermined number. Effect of the Invention

[0010] According to these aspects of the present invention, when an abnormality occurs in power transmission between a power transmitting device and a power receiving device, it is possible to determine whether the cause of the abnormality is in the power transmitting device or the power receiving device based on the number of times the power transmission abnormality occurred or the number of times external notifications were received informing the user of the abnormality. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram of a contactless power supply system. [Diagram 2] FIG. 2 is a diagram illustrating an example of the configuration of a ground power supply device. [Diagram 3] FIG. 3 is a diagram showing an example of the configuration of a portion of a vehicle that is mainly related to contactless power supply. [Figure 4] FIG. 4 is a flowchart illustrating the contents of a process according to the first embodiment of the present invention, which is executed in a power transmission control device to identify the source of a power transmission abnormality. [Diagram 5] FIG. 5 is a flowchart illustrating the contents of processing according to the first embodiment of the present invention, which is performed in a power receiving control device when a vehicle receives an abnormality occurrence notification from a ground power supply device in order to identify the source of the power transmission abnormality. [Figure 6] FIG. 6 is a diagram showing a state in which an abnormality occurs in a power receiving device mounted on a vehicle, and a power transmission abnormality occurs between the power receiving device and a plurality of ground power feeding devices. [Figure 7] FIG. 7 is a flowchart illustrating the process executed in the power receiving control device of a vehicle when the vehicle receives a ground side abnormality notification from the ground power feeding device. [Figure 8] FIG. 8 is a flowchart illustrating the process executed in a power transmission control device of a ground power feeding device when the ground power feeding device receives a vehicle-side abnormality notification from a vehicle. [Figure 9]FIG. 9 is a flowchart illustrating the contents of a process according to the second embodiment of the present invention, which is executed in a power receiving control device in order to identify the source of a power transmission abnormality. [Figure 10] FIG. 10 is a flowchart illustrating the content of processing according to this embodiment that is performed in a power transmission control device of a ground power supplying device when the ground power supplying device receives an abnormality occurrence notification from a vehicle in order to identify the source of the power transmission abnormality. [Figure 11] FIG. 11 is a diagram showing a state in which an abnormality occurs in a power transmission device of a ground power feeding device, and an abnormality occurs in power transmission between the power transmission device and a plurality of vehicles. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments will be described in detail with reference to the drawings. In the following description, like elements are designated by like reference numerals.

[0013] (First embodiment) FIG. 1 is a schematic configuration diagram of a contactless power supply system 100 according to a first embodiment of the present invention.

[0014] The contactless power supply system 100 includes a server 1, a ground power supply device 2, and a vehicle 3 which is an example of a moving body, and is configured to be able to supply power to the vehicle 3 contactlessly from the ground power supply device 2 by contactless power transmission using various transmission methods such as magnetic field coupling (electromagnetic induction), electric field coupling, magnetic field resonant coupling (magnetic resonance), and electric field resonant coupling (electric field resonance). Note that Fig. 1 shows an example in which the ground power supply devices 2 are continuously set at predetermined intervals along a road, as an example of an installation example of the ground power supply devices 2.

[0015] As shown in FIG. 1, the server 1 includes a server communication unit 11, a server storage unit 12, and a server processing unit 13.

[0016] The server communication unit 11 includes a communication interface circuit for connecting the server 1 to the network 6, and is configured to be able to communicate with each of the ground power supply device 2 and the vehicle 3 via the network 6.

[0017] The server storage unit 12 includes a storage medium such as a hard disk drive (HDD), a solid state drive (SSD), an optical recording medium, or a semiconductor memory, and stores various computer programs and data used for processing by the server processing unit 13.

[0018] The server processing unit 13 includes a processor having one or more central processing units (CPUs) and their peripheral circuits. The server processing unit 13 executes various processes based on various computer programs stored in the server storage unit 12. For example, when the server processing unit 13 receives a use request signal for the contactless power supply system 100 from the vehicle 3, the server processing unit 13 confirms whether the vehicle 3 has the authority to use the contactless power supply system 100, and if the confirmation is successful, exchanges various information with the vehicle 3 and the ground power supply device 2 so that the vehicle 3 can receive power supply from the ground power supply device 2. Details of the exchange are not the main part of the present invention, so a description thereof will be omitted here.

[0019] Next, the configuration of the ground power feeding device 2 and the portion related to the contactless power feeding of the vehicle 3 according to this embodiment will be described with reference to Figs.

[0020] FIG. 2 is a diagram showing an example of the configuration of the ground power supply device 2 according to this embodiment.

[0021] 2, the ground power supply device 2 includes a power source 21, a power transmission device 22, a ground-side communication device 23, and a power transmission control device 20. The power transmission device 22 and the ground-side communication device 23 are connected to the power transmission control device 20 via an internal network 24 of the ground power supply device 2 that complies with standards such as CAN (Controller Area Network). Note that while FIG. 2 shows an example in which the ground power supply device 2 includes one power transmission device 22, the ground power supply device 2 may include multiple power transmission devices 22.

[0022] The power source 21 supplies power to the power transmission device 22. The power source 21 is, for example, a commercial AC power source that supplies single-phase AC power. The power source 21 may be another AC power source that supplies three-phase AC power, or may be a DC power source such as a fuel cell.

[0023] The power transmitting device 22 is a device for transmitting the electric power supplied from the power source 21 to the vehicle 3, and includes a power transmitting side resonator 221 and a power transmitting circuit 222.

[0024] The power transmitting resonator 221 is a resonant circuit including a power transmitting coil, and is configured to resonate at a predetermined resonant frequency f0. In this embodiment, the resonant frequency f0 is set to 85 kHz, which is determined by the SAE TIR J2954 standard as a frequency band for contactless power transmission, but is not limited thereto.

[0025] As will be described later with reference to Fig. 3, the vehicle 3 is provided with a power receiving side resonator 311 (see Fig. 3) corresponding to the power transmitting side resonator 221. The power receiving side resonator 311 is a resonant circuit including a power receiving coil, and is configured to resonate at the same resonant frequency f0 as the power transmitting side resonator 221. By resonating the power transmitting side resonator 221, the power transmitting coil of the power transmitting side resonator 221 and the power receiving coil of the power receiving side resonator 311, which are arranged with a space between them, are magnetically coupled, and contactless power transmission from the power transmitting device 22 to the power receiving device 31 is performed.

[0026] The power transmission circuit 222 is an electric circuit including a rectifier and an inverter, and is configured to be controlled by the power transmission control device 20 to convert AC power supplied from the power source 21 by the rectifier, and also to convert the DC power by the inverter into desired AC power capable of resonating the power transmission side resonator 221, and then to supply the AC power to the power transmission side resonator 221. Note that the configuration of the power transmission circuit 222 is not limited to this configuration, and may be changed as appropriate depending on the type of the power source 21, etc.

[0027] The power transmission circuit 222 is also provided with a power transmission sensor 223 for detecting whether power transmission is being performed normally (in other words, whether contactless power feeding is being performed normally). The power transmission sensor 223 includes, for example, a power transmission side current sensor that detects a current (hereinafter referred to as a “power transmission side current”) I1 flowing through the power transmission side resonator 221, and a power transmission side voltage sensor that detects a voltage (hereinafter referred to as a “power transmission side voltage”) V1 applied to the power transmission side resonator 221. A detection signal of the power transmission sensor 223 is input to the power transmission control device 20.

[0028] The ground side communication device 23 includes an antenna and a signal processing circuit that executes various processes related to wireless communication, such as modulation and demodulation of wireless signals, and is configured to be able to communicate with an external server 1 and vehicle 3. Communication between the ground side communication device 23 and the vehicle 3 can be performed directly between them, or indirectly via the server 1. When the ground side communication device 23 receives a wireless signal from the outside, it transfers the wireless signal to the power transmission control device 20. Furthermore, when a signal to be transmitted to the outside is transferred from the power transmission control device 20 to the ground side communication device 23, it generates a wireless signal including the signal and transmits it to the outside.

[0029] The power transmission control device 20 includes a communication interface 201 , a storage unit 202 , and a power transmission processing unit 203 .

[0030] The communication interface 201 is a communication interface circuit for connecting the power transmission control device 20 to the internal network 24 of the ground power supply device 2.

[0031] The storage unit 202 includes a storage medium such as an HDD, an SSD, an optical recording medium, or a semiconductor memory, and stores various computer programs and data used for processing in the power transmission processing unit 203.

[0032] The power transmission processing unit 203 includes a processor having one or more CPUs and their peripheral circuits. The power transmission processing unit 203 executes various processes based on various computer programs stored in the storage unit 202. The contents of the processes executed by the power transmission processing unit 203 and the power transmission control device 20 will be described later with reference to FIG. 4 and the like.

[0033] FIG. 3 is a diagram showing an example of the configuration of a portion of the vehicle 3 according to the present embodiment that is mainly related to contactless power supply.

[0034] 3, the vehicle 3 includes a power receiving device 31, a vehicle-side communication device 32, and a power receiving control device 30. The power receiving device 31 and the vehicle-side communication device 32 are connected to the power receiving control device 30 via an in-vehicle network 38 that complies with standards such as CAN. Note that the power receiving control device 30 can be connected to other devices (such as a GPS device that detects the current position of the vehicle 3) mounted on the vehicle 3 as necessary, and can thereby obtain various types of information as necessary.

[0035] The power receiving device 31 includes a power receiving side resonator 311 and a power receiving circuit 312 .

[0036] As described above, the power receiving side resonator 311 is a resonant circuit including a power receiving coil, and is configured to resonate at the same resonant frequency f0 as the power transmitting side resonator 221.

[0037] The power receiving circuit 312 is an electric circuit including a rectifier and a DC / DC converter, and is configured to be controlled by the power receiving control device 30 to convert AC power output from the power receiving side resonator 311 into DC power by the rectifier and supply it to an electric load 39 via the DC / DC converter. The electric load 39 may be, for example, a battery or an electric motor, but is not limited thereto. In this embodiment, the power receiving circuit 312 is connected to a battery as the electric load 39.

[0038] The power receiving circuit 312 is also provided with a power receiving sensor 313 for detecting whether power is being received normally (in other words, whether contactless power supply is being performed normally). The power receiving sensor 313 includes, for example, a power receiving side current sensor that detects the output current (hereinafter referred to as the "power receiving side current") I2 of the rectifier, and a power receiving side voltage sensor that detects the output voltage (hereinafter referred to as the "power receiving side voltage") V2 of the rectifier. A detection signal of the power receiving sensor is input to the power receiving control device 30.

[0039] The vehicle-side communication device 32 includes an antenna and a signal processing circuit that executes various processes related to wireless communication, such as modulation and demodulation of wireless signals, and is configured to be able to communicate with the external server 1 and ground power supply device 2. The communication between the vehicle-side communication device 32 and the ground power supply device 2 can be performed directly between them, or indirectly via the server 1. When the vehicle-side communication device 32 receives a wireless signal from the outside, it transfers the wireless signal to the power receiving control device 30. Furthermore, when a signal to be transmitted to the outside is transferred from the power receiving control device 30 to the vehicle-side communication device 32, the vehicle-side communication device 32 generates a wireless signal including the signal and transmits it to the outside.

[0040] The power receiving control device 30 includes a communication interface 301 , a storage unit 302 , and a power receiving processing unit 303 .

[0041] The communication interface 301 is a communication interface circuit for connecting the power receiving control device 30 to the in-vehicle network 38 .

[0042] The storage unit 302 has a storage medium such as an HDD, an SSD, an optical recording medium, or a semiconductor memory, and stores various computer programs and data used for processing in the power receiving processing unit 303.

[0043] The power receiving processing unit 303 includes a processor having one or more CPUs and their peripheral circuits. The power receiving processing unit 303 executes various processes based on various computer programs stored in the storage unit 302. The contents of the processes executed by the power receiving processing unit 303 and the power receiving control device 30 will be described later with reference to FIG. 5 and the like.

[0044] In the contactless power supply system 100, when an abnormality in power transmission (hereinafter referred to as "power transmission abnormality") occurs, such as when power cannot be normally transmitted and received between the power transmitting device 22 and the power receiving device 31, it is necessary to determine whether the cause of the power transmission abnormality is the power transmitting device 22 or the power receiving device 31. If the abnormality in the power transmitting device 22 is left unattended, each vehicle 3 will not be able to receive power from the power transmitting device 22, and the effect will extend to multiple vehicles 3. Furthermore, if the abnormality in the power receiving device 31 is left unattended, the vehicle 3 equipped with the power receiving device 31 will not be able to receive power from the power transmitting device 22, which may adversely affect driving.

[0045] However, since the power transmission device 22 and the power receiving device 31 are physically separated, when a power transmission abnormality occurs, the ground power supply device may not be able to determine whether the abnormality is in the power transmission device 22 of its own device and therefore the power transmission is not possible normally, or whether the abnormality is in the power receiving device 31 on the vehicle side and similarly, the vehicle side may not be able to determine whether the abnormality is in the power transmission device 22 on the ground power supply device side and therefore the power reception is not possible normally, or whether the abnormality is in the power receiving device 31 of the vehicle side and therefore the power reception is not possible normally.

[0046] In this embodiment, when a power transmission abnormality occurs, it is possible to determine whether the cause of the power transmission abnormality is on the ground power supply device side or on the vehicle side, and identify the source of the power transmission abnormality. Hereinafter, with reference to Figs. 4 to 8, the contents of the processing performed in the power transmission control device 20 and the power receiving control device 30 to identify the source of the power transmission abnormality will be described.

[0047] 4 is a flowchart illustrating the contents of a process according to this embodiment, which is performed by the power transmission control device 20 to identify the source of the power transmission abnormality. In this embodiment, the power transmission control device 20 performs this process every time a vehicle 3 that desires wireless power supply passes over the power transmission device 22.

[0048] In step S101, the power transmission control device 20 judges whether or not a power transmission abnormality has occurred between the power transmission control device 20 and the power receiving device 31 mounted on the vehicle 3 that has passed over the power transmission device 22. For example, based on the detection signal of the power transmission sensor 223, the power transmission control device 20 can judge that a power transmission abnormality has occurred between the power transmission control device 20 and the power receiving device 31 mounted on the vehicle 3 when it is detected that the vehicle 3 that desires contactless power supply has traveled over the power transmission device 22 but has not been able to transmit power (i.e., the amount of transmitted power is zero) or when it is detected that the amount of transmitted power to the vehicle 3 is less than the target amount of transmitted power. When a power transmission abnormality has occurred between the power transmission control device 20 and the power receiving device 31 mounted on the vehicle 3 that has passed over the power transmission device 22, the power transmission control device 20 proceeds to processing of step S102. On the other hand, when no power transmission abnormality has occurred between the power transmission control device 20 and the power receiving device 31 mounted on the vehicle 3 that has passed over the power transmission device 22, the power transmission control device 20 ends this processing.

[0049] In step S102, the power transmission control device 20 transmits an abnormality occurrence notification to the vehicle 3 equipped with the power receiving device 31 in which the power transmission abnormality has occurred between the power transmission device 22 and the power receiving device 31 of the vehicle 3, notifying the vehicle 3 of the occurrence of the power transmission abnormality. The contents of the process performed by the power receiving control device 30 of the vehicle 3 that has received the abnormality occurrence notification will be described later with reference to Fig. 5. The abnormality occurrence notification may be transmitted directly to the vehicle 3 or indirectly via the server 1.

[0050] In step S103, the power transmission control device 20 counts up the power transmission side counter N T Add 1 to the sending side count N T The power transmission counter N T is a counter that is incremented by the power transmission control device 20 each time it is determined that a power transmission abnormality has occurred between the power transmission control device 20 and the power receiving device 31. T The initial value of is set to 0.

[0051] In step S104, the power transmission control device 20 counts up the power transmission side counter N T The power transmission control device 20 determines whether the power transmission side counter N T If the power transmission control device 20 counts up the power transmission side counter N T If it is less than the abnormality determination threshold TH1, the current process ends.

[0052] In step S105, the power transmission control device 20 determines that the cause of the power transmission abnormality that occurred between the power transmission control device 20 and the power receiving device 31 was on the ground power supply device side. This is based on the number of times that the power transmission control device 20 has determined that a power transmission abnormality occurred between the power transmission control device 20 and the power receiving device 31 (the power transmission side counter N T ) becomes equal to or exceeds a predetermined number (abnormality determination threshold TH1), that is, when the number of times that a power transmission abnormality is detected on the ground power supply device side becomes equal to or exceeds a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power transmission device 22.

[0053] In step S106, the power transmission control device 20 counts up the power transmission side counter N T is also reset to its initial value of 0.

[0054] In step S107, the power transmission control device 20 transmits a notification (hereinafter referred to as a "ground side abnormality notification") to the vehicle 3 that transmitted the abnormality occurrence notification, notifying the vehicle 3 that the power transmission abnormality that occurred between the vehicle 3 and the power receiving device 31 mounted on the vehicle 3 was caused by the power transmitting device 22 on the ground power supply device side. The contents of the process performed by the power receiving control device 30 of the vehicle 3 that received the ground side abnormality notification will be described later with reference to FIG.

[0055] FIG. 5 is a flowchart illustrating the contents of processing according to this embodiment that is performed in the power receiving control device 30 when the vehicle 3 receives an abnormality occurrence notification from the ground power supply device 2 in order to identify the source of the power transmission abnormality.

[0056] In step S111, the power receiving control device 30 determines whether or not an abnormality occurrence notification has been received from the ground power supply device 2. If the power receiving control device 30 has received the abnormality occurrence notification from the ground power supply device 2, the power receiving control device 30 proceeds to processing in step S112. On the other hand, if the power receiving control device 30 has not received the abnormality occurrence notification from the ground power supply device 2, the power receiving control device 30 ends this processing.

[0057] In step S112, the power receiving control device 30 counts up the power receiving side counter N R Add 1 to the receiving side counter N R Count up the receiving side counter N R is a counter that is incremented each time an abnormality occurrence notification is received from the ground power supply device 2. R The initial value of is set to 0.

[0058] In step S113, the power receiving control device 30 counts up the power receiving side counter N R The power receiving control device 30 determines whether the power receiving side counter N RIf the abnormality determination threshold value TH2 is equal to or greater than the abnormality determination threshold value TH2, the process proceeds to step S114. R If it is less than the abnormality determination threshold TH2, the current process ends.

[0059] In step S114, the power receiving control device 30 determines that the cause of the power transmission abnormality that occurred between the power receiving device 22 of each ground power supply device 2 that is the source of the abnormality occurrence notification was the vehicle-side power receiving device 31. This is because, as shown in Fig. 6, when a power transmission abnormality occurs between a plurality of ground power supply devices 2 and the number of times that abnormality occurrence notifications are received from each ground power supply device 2 (power receiving side counter NR) becomes equal to or greater than a predetermined number of times (abnormality determination threshold TH2), it can be determined that there is a high probability that an abnormality has occurred in the vehicle-side power receiving device 31.

[0060] In step S115, the power receiving control device 30 counts up the power receiving side counter N R Reset to the initial value of 0.

[0061] In step S116, the power receiving control device 30 transmits a notification (hereinafter referred to as a "vehicle-side abnormality notification") to each ground power supply device 2 that is the source of the abnormality occurrence notification, notifying that the cause of the power transmission abnormality that occurred between the ground power supply device 2 and the power transmission device 22 of the ground power supply device 2 was the vehicle-side power receiving device 31. The contents of the process performed by the power transmission control device 20 of the ground power supply device 2 that received the vehicle-side abnormality notification will be described later with reference to FIG.

[0062] FIG. 7 is a flowchart illustrating the contents of the process executed in the power receiving control device 30 of the vehicle 3 when the vehicle 3 receives a ground side abnormality notification from the ground power feeding device 2.

[0063] In step S121, the power receiving control device 30 determines whether or not a ground-side abnormality notification has been received from the ground power supply device 2 that is the source of the abnormality occurrence notification. If the power receiving control device 30 has received a ground-side abnormality notification from the ground power supply device 2, the power receiving control device 30 proceeds to processing in step S122. On the other hand, if the power receiving control device 30 has not received a ground-side abnormality notification from the ground power supply device 2, the power receiving control device 30 ends this processing.

[0064] In step S122, the power receiving control device 30 counts up the power receiving side counter N R Subtract 1 from the receiving side counter N R The time when the ground side abnormality notification is received from the ground power supply device 2 that is the source of the abnormality occurrence notification is the time when it is determined that the cause of the power transmission abnormality that occurred between the power transmission device 22 of the ground power supply device 2 and the power receiving device 31 of the vehicle 3 is on the ground power supply device side. Therefore, every time the ground side abnormality notification is received, the power receiving side counter N R By counting down the power receiving side counter N R Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0065] FIG. 8 is a flowchart illustrating the process executed in the power transmission control device 20 of the ground power supplying device 2 when the ground power supplying device 2 receives a vehicle-side abnormality notification from the vehicle 3.

[0066] In step S131, the power transmission control device 20 determines whether or not a vehicle-side abnormality notification has been received from the vehicle 3 to which the abnormality occurrence notification is to be sent. If the power transmission control device 20 has received a vehicle-side abnormality notification from the vehicle 3, the power transmission control device 20 proceeds to processing in step S132. On the other hand, if the power transmission control device 20 has not received a vehicle-side abnormality notification from the vehicle 3, the power transmission control device 20 ends this processing.

[0067] In step S132, the power transmission control device 20 counts up the power transmission side counter N T Subtract 1 from the power transmission counter N TThe power transmission side counter N counts down every time a vehicle side abnormality notification is received from the vehicle 3 that is the destination of the abnormality occurrence notification. This is when it is determined that the cause of the power transmission abnormality that occurred between the vehicle 3 and the power receiving device 31 is the power receiving device 31 on the vehicle side. T By counting down the power transmission side counter N T Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0068] The ground power supply device 2 according to the present embodiment described above includes a power transmission device 22 for contactlessly supplying power to a vehicle 3 (mobile body) equipped with a power receiving device 31, a ground-side communication device 23 (communication device) for communicating with the vehicle 3, and a power transmission control device 20 (control device).

[0069] The power transmission control device 20 counts the number of power transmission abnormalities that occur between the power transmission device 22 and the power reception device 31, and sets the power transmission side counter N T Calculate the power transmission counter N T becomes equal to or greater than an abnormality determination threshold TH1 (a predetermined number of times).

[0070] When the number of times that a power transmission abnormality is detected on the ground power supply device side reaches or exceeds a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power transmitting device 22. Therefore, as in this embodiment, by comparing the number of times that a power transmission abnormality is detected on the ground power supply device side with a threshold value, it can be determined whether the cause of the power transmission abnormality was the power transmitting device 22 or the power receiving device 31.

[0071] In addition, the power transmission control device 20 determines whether a power transmission abnormality has occurred, and when a power transmission abnormality has occurred, transmits an abnormality occurrence notification to the vehicle 3 in which the power receiving device 31 in which the power transmission abnormality has occurred between the power transmission device 22 and the power transmission control device 20 is mounted. When the power transmission control device 20 receives a vehicle-side abnormality notification from the vehicle 3 that transmitted the abnormality occurrence notification, the vehicle-side abnormality notification notifying that an abnormality has occurred in the power receiving device 31 mounted on the vehicle 3, the power transmission side counter NT It is configured to reduce (the number of occurrences counted).

[0072] The time when the vehicle-side abnormality notification is received from the vehicle 3 that is the destination of the abnormality occurrence notification is the time when it is determined that the cause of the power transmission abnormality that occurred between the vehicle 3 and the power receiving device 31 is the vehicle-side power receiving device 31. Therefore, the power transmission side counter N T By counting down the power transmission side counter N T Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0073] In addition, the vehicle 3 (mobile body) according to this embodiment is equipped with a power receiving device 31 for receiving contactless power supply from the power transmitting device 22 of the ground power supply device 2, a vehicle-side communication device 32 (communication device) for communicating with the ground power supply device 2, and a power receiving control device 30 (control device).

[0074] The power receiving control device 30 counts the number of times that the abnormality occurrence notification transmitted from the ground power supply device 2 is received when the occurrence of a power transmission abnormality is detected in the ground power supply device 2, and sets the power receiving side counter N R Calculate the receiving side counter N R When the number of times the power receiving device 31 receives the abnormality determination threshold TH2 (predetermined number of times) or more, it is determined that an abnormality has occurred in the power receiving device 31.

[0075] As described above with reference to Fig. 6, when an abnormality occurs in the power receiving device 31 mounted on the vehicle 3, a power transmission abnormality occurs between the power receiving device 31 and the plurality of ground power feeding devices 2, and as a result, the number of times that abnormality occurrence notifications are received from each ground power feeding device 2 increases. Therefore, when the number of times that abnormality occurrence notifications are received from each ground power feeding device 2 becomes equal to or greater than a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power receiving device 31 on the vehicle side. Therefore, as in this embodiment, by comparing the number of times that the abnormality occurrence notifications transmitted from the ground power feeding device 2 are received on the vehicle side with a threshold value, it can be determined whether the cause of the power transmission abnormality was in the power transmitting device or in the power receiving device.

[0076] In addition, when the power receiving control device 30 receives a ground-side abnormality notification from the ground power supply device 2 that is the source of the abnormality occurrence notification, notifying that an abnormality has occurred in the power transmission device 22 of the ground power supply device 2, the power receiving control device 30 counts up the power receiving side counter N R (the number of times the signal is received).

[0077] When a ground-side abnormality notification is received from the ground power supply device 2 that is the source of the abnormality occurrence notification, it is determined that the cause of the power transmission abnormality that occurred between the power transmission device 22 of the ground power supply device 2 and the power receiving device 31 of the vehicle 3 is on the ground power supply device side. Therefore, every time a ground-side abnormality notification is received, the power receiving side counter N R By counting down the power receiving side counter N R Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0078] Second embodiment Next, a second embodiment of the present invention will be described. This embodiment differs from the first embodiment in that it determines whether a power transmission abnormality has occurred on the vehicle side, and transmits an abnormality occurrence notification from the vehicle 3 to the ground power feeding device 2. The following description will focus on this difference.

[0079] 9 is a flowchart illustrating the contents of a process according to this embodiment, which is performed by the power receiving control device 30 to identify the source of the power transmission anomaly. In this embodiment, the power receiving control device 30 performs this process every time the vehicle 3 passes over the power transmission device 22 of the ground power supply device 2 that has requested the implementation of contactless power supply.

[0080] In step S201, the power receiving control device 30 judges whether or not a power transmission abnormality has occurred between the power receiving control device 30 and the power transmission device 22 of the ground power supply device 2 that has requested the implementation of non-contact power supply. For example, when the power receiving control device 30 detects that the vehicle has traveled over the power transmission device 22 of the ground power supply device 2 that has requested the implementation of non-contact power supply but has not received power, or when the power receiving control device detects that the amount of power received from the power transmission device 22 is less than the requested amount of power received, based on the detection signal of the power receiving sensor 313, the power receiving control device 30 can judge that a power transmission abnormality has occurred between the power receiving control device 30 and the power transmission device 22 of the ground power supply device 2 that has requested the implementation of non-contact power supply. When a power transmission abnormality has occurred between the power receiving control device 30 and the power transmission device 22 of the ground power supply device 2 that has requested the implementation of non-contact power supply, the power receiving control device 30 proceeds to the process of step S202. On the other hand, when a power transmission abnormality has not occurred between the power receiving control device 30 and the power transmission device 22 of the ground power supply device 2 that has requested the implementation of non-contact power supply, the power receiving control device 30 ends the current process.

[0081] In step S202, the power receiving control device 30 transmits an abnormality occurrence notification to the ground power supply device 2 in which the power transmission abnormality has occurred with the power receiving device 31, notifying the ground power supply device 2 of the occurrence of the power transmission abnormality with the power transmitting device 22 of the ground power supply device 2. The contents of the process performed by the power transmission control device 20 of the ground power supply device 2 that has received the abnormality occurrence notification will be described later with reference to Fig. 10. The abnormality occurrence notification may be transmitted directly to the ground power supply device 2 or indirectly via the server 1.

[0082] In step S203, the power receiving control device 30 counts up the power receiving side counter N R Add 1 to the receiving side counter N R The power receiving side counter N RUnlike the first embodiment, the power receiving control device 30 is a counter that is incremented each time it is determined that a power transmission abnormality has occurred between the power receiving control device 30 and the power transmitting device 22. R The initial value of is set to 0.

[0083] In step 204, the power receiving control device 30 counts up the power receiving side counter N R The power receiving control device 30 determines whether the power receiving side counter N R If the abnormality determination threshold value TH3 is equal to or greater than the abnormality determination threshold value TH3, the process proceeds to step S205. R If it is less than the abnormality determination threshold TH3, the current process ends.

[0084] In step S205, the power receiving control device 30 determines that the cause of the power transmission abnormality that occurred between the power receiving control device 30 and the power transmitting device 22 was the power receiving device 31 on the vehicle side. This is based on the number of times that the power receiving control device 30 has determined that a power transmission abnormality has occurred between the power receiving control device 30 and the power transmitting device 22 (the power receiving side counter N R ) becomes equal to or exceeds a predetermined number (abnormality determination threshold TH3), that is, when the number of times that a power transmission abnormality is detected on the vehicle side becomes equal to or exceeds a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power receiving device 31 of the vehicle 3.

[0085] In step S206, the power receiving control device 30 counts up the power transmitting side counter N R is also reset to its initial value of 0.

[0086] In step S207, the power receiving control device 30 transmits a notification (vehicle-side abnormality notification) to the ground power supply device 2 that transmitted the abnormality occurrence notification, notifying the ground power supply device 2 that the power transmission abnormality that occurred between the ground power supply device 2 and the power transmission device 22 was caused by the vehicle-side power receiving device 31. The contents of the process performed by the power transmission control device 20 of the ground power supply device 2 that received this vehicle-side abnormality notification are similar to those of the first embodiment described above with reference to Fig. 8, and therefore will not be described here.

[0087] FIG. 10 is a flowchart illustrating the processing according to this embodiment that is performed in the power transmission control device 20 of the ground power supply device 2 when the ground power supply device 2 receives an abnormality notification from the vehicle 3 in order to identify the source of the power transmission abnormality.

[0088] In step S211, the power transmission control device 20 determines whether or not an abnormality occurrence notification has been received from the vehicle 3. If the power transmission control device 20 has received the abnormality occurrence notification from the vehicle 3, the power transmission control device 20 proceeds to processing in step S212. On the other hand, if the power transmission control device 20 has not received the abnormality occurrence notification from the vehicle 3, the power transmission control device 20 ends this processing.

[0089] In step S212, the power transmission control device 20 counts up the power transmission side counter N T Add 1 to the power transmission counter N T The power transmission side counter N T Unlike the first embodiment, the power transmission side counter N is a counter that is incremented every time an abnormality occurrence notification is received from the vehicle 3. T The initial value of is set to 0.

[0090] In step S213, the power transmission control device 20 counts up the power transmission side counter N T The power transmission control device 20 determines whether the power transmission side counter N T If the abnormality determination threshold value TH4 is equal to or greater than the abnormality determination threshold value TH4, the process proceeds to step S214. T If it is less than the abnormality determination threshold TH4, the current process ends.

[0091] In step S214, the power transmission control device 20 determines that the cause of the power transmission abnormality that occurred with the power receiving device 31 of the vehicle 3 that is the source of the abnormality occurrence notification is the power transmitting device 22 on the ground power supply device side. This is because, as shown in FIG. 11, a power transmission abnormality has occurred with a plurality of vehicles 3, and the number of times the abnormality occurrence notification has been received from each vehicle 3 (power transmission side counter N TThis is because, when the number of occurrences of the abnormality determination threshold TH4 is equal to or greater than a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power transmitting device 22 on the ground power supply device side.

[0092] In step S215, the power transmission control device 20 counts up the power transmission side counter N T Reset to the initial value of 0.

[0093] In step S116, the power transmission control device 20 transmits a notification (hereinafter referred to as a "ground side abnormality notification") to each vehicle 3 that is the source of the abnormality occurrence notification, notifying that the cause of the power transmission abnormality that occurred between the vehicle 3 and the power receiving device 31 was the power transmitting device 22 on the ground power supply device side. The contents of the process performed by the power receiving control device 30 of the vehicle 3 that received this ground side abnormality notification are similar to those of the first embodiment described above with reference to Fig. 7, and therefore will not be described here.

[0094] The power transmission control device 20 of the ground power supply device 2 according to the present embodiment described above counts the number of times that the abnormality occurrence notification transmitted from the vehicle 3 (mobile body) is received when the occurrence of the power transmission abnormality is detected in the vehicle 3 (mobile body), and sets the power transmission side counter N T Calculate the power transmission counter N T becomes equal to or greater than an abnormality determination threshold value TH4 (a predetermined number of times).

[0095] As described above with reference to Fig. 11, when an abnormality occurs in the power transmission device 22 of the ground power supply device 2, a power transmission abnormality occurs between the power transmission device 22 and the multiple vehicles 3, and as a result, the number of times that abnormality occurrence notifications are received from each vehicle 3 increases. Therefore, when the number of times that abnormality occurrence notifications are received from each vehicle 3 becomes equal to or greater than a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power transmission device 22 on the ground power supply device side. Therefore, as in this embodiment, by comparing the number of times that abnormality occurrence notifications are received from the vehicles 3 with a threshold value on the ground power supply device side, it can be determined whether the cause of the power transmission abnormality was in the power transmission device or in the power receiving device.

[0096] In addition, when the power transmission control device 20 receives a vehicle-side abnormality notification from the vehicle 3 that has transmitted the abnormality occurrence notification, the vehicle-side abnormality notification notifying that an abnormality has occurred in the power receiving device 31 mounted on the vehicle 3, the power transmission control device 20 increments the power transmission side counter N T (the number of times the power is received). As a result, even if there is no abnormality in the power transmitting device 22, the power transmitting side counter N T Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0097] In addition, the power receiving control device 30 of the vehicle 3 (mobile body) according to this embodiment counts the number of times that a power transmission abnormality occurs between the power transmitting device 22 and the power receiving device 31, and sets a power receiving side counter N R Calculate the receiving side counter N R When the number of times the power receiving device 31 receives the abnormality determination threshold TH3 (predetermined number of times) or more, it is determined that an abnormality has occurred in the power receiving device 31.

[0098] When the number of times that a power transmission abnormality is detected on the vehicle side reaches or exceeds a predetermined number, it can be determined that there is a high probability that an abnormality has occurred in the power receiving device 31 mounted on the vehicle 3. Therefore, as in this embodiment, by comparing the number of times that a power transmission abnormality is detected on the vehicle side with a threshold value, it can be determined whether the cause of the power transmission abnormality was the power transmitting device 22 or the power receiving device 31.

[0099] The power receiving control device 30 also determines whether a power transmission abnormality has occurred, and when a power transmission abnormality has occurred, transmits an abnormality occurrence notification to the ground power supply device 2 having the power transmission device 22 in which the power transmission abnormality has occurred between the power receiving device 31 and the power receiving device 31. When a ground side abnormality notification is received from the ground power supply device 2 that transmitted the abnormality occurrence notification, notifying that an abnormality has occurred in the power transmission device 22 of the ground power supply device 2, the power receiving side counter N R It is configured to reduce (the number of occurrences counted).

[0100] The time when the ground side abnormality notification is received from the ground power supply device 2 to which the abnormality occurrence notification is sent is the time when it is determined that the cause of the power transmission abnormality that occurred between the ground power supply device 2 and the power transmission device 22 of the ground power supply device 2 is the power transmission device 22 of the ground power supply device 2. Therefore, the power receiving side counter N R By counting down the power receiving side counter N R Since it is possible to prevent the value of the threshold from continuing to increase, it is possible to prevent erroneous determination from occurring.

[0101] Although the embodiments of the present invention have been described above, the above-mentioned embodiments merely show some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above-mentioned embodiments.

[0102] For example, some of the processes performed by the power transmission control device 20 and the power receiving control device 30 in each of the above embodiments may be performed by the server 1. Furthermore, the threshold values ​​TH1 to TH4 used for abnormality determination may be different values, some of them may be the same value, or all of them may be the same value.

[0103] In each of the above embodiments, the power transmission control device 20 is an example of an abnormality determination device that determines an abnormality in the power transmission device 22 of the contactless power supply system 100. Specifically, it is an example of an abnormality determination device that is configured to count the number of power transmission abnormalities that have occurred between the power transmission device 22 and the power receiving device 31 that contactlessly receives power transmitted from the power transmission device 22, or the number of times that a notification notifying the occurrence of a power transmission abnormality has been received from the outside, and determine that an abnormality has occurred in the power transmission device 22 when the number of times reaches a predetermined number or more.

[0104] Similarly, the power receiving control device 30 is also an example of an abnormality determination device that determines an abnormality in the power receiving device 31 of the contactless power supply system 100. Specifically, it is an example of an abnormality determination device that is configured to count the number of power transmission abnormalities that have occurred between the power receiving device 31 and the power transmitting device 22 that transmits power contactlessly to the power receiving device 31, or the number of times that notifications notifying the occurrence of a power transmission abnormality have been received from the outside, and determine that an abnormality has occurred in the power receiving device 31 when the number of such abnormalities reaches a predetermined number or more.

[0105] 2 Ground power supply equipment 3. Vehicles (moving objects) 20 Power transmission control device (control device) 22 Power transmission equipment 23 Ground communication equipment (communication equipment) 30 Power receiving control device (control device) 31 Power receiving device 32 Vehicle-side communication device (communication device)

Claims

1. a power transmitting device for wirelessly supplying power to a moving object having a power receiving device; A communication device for communicating with the mobile object; A control device; A ground power supply device comprising: The control device includes: Counting the number of times a power transmission anomaly has occurred between the power transmitting device and the power receiving device, or the number of times an anomaly occurrence notification transmitted from the mobile body when the occurrence of the power transmission anomaly is detected in the mobile body is received; When the number of occurrences or the number of receptions reaches or exceeds a predetermined number, it is determined that an abnormality has occurred in the power transmitting device. Ground power supply equipment.

2. The control device includes: determining whether the power transmission abnormality has occurred; When the power transmission abnormality occurs, an abnormality occurrence notification is transmitted to the mobile body in which the power receiving device in which the power transmission abnormality occurs is mounted, and and when a mobile unit side abnormality notification is received from the mobile unit that has transmitted the abnormality occurrence notification, the mobile unit side abnormality notification notifying that an abnormality has occurred in the power receiving device mounted on the mobile unit, the count number of the occurrences is decreased. The ground power supply device according to claim 1 .

3. The control device includes: When a mobile body side abnormality notification notifying that an abnormality has occurred in the power receiving device mounted on the mobile body is received from the mobile body that is the source of the abnormality occurrence notification, the count number of the reception times is decreased. The ground power supply device according to claim 1 .

4. a power receiving device for receiving wireless power supply from a power transmitting device of a ground power supply device; A communication device for communicating with the ground power supply device; A control device; A moving body comprising: The control device includes: counting the number of times a power transmission anomaly has occurred between the power transmitting device and the power receiving device, or the number of times an anomaly occurrence notice transmitted from the ground power supply device when the occurrence of the power transmission anomaly is detected in the ground power supply device is received; When the number of occurrences or the number of receptions reaches or exceeds a predetermined number, it is determined that an abnormality has occurred in the power receiving device. Mobile body.

5. The control device includes: determining whether the power transmission abnormality has occurred; When the power transmission abnormality occurs, an abnormality occurrence notification is transmitted to the ground power supply device having the power transmission device in which the power transmission abnormality occurs between the ground power supply device and the power receiving device; and when a ground-side abnormality notification is received from the ground power supply device that has transmitted the abnormality occurrence notification, the ground side abnormality notification notifying that an abnormality has occurred in the power transmission device of the ground power supply device, the count number of the occurrences is decreased. The moving body according to claim 4.

6. The control device includes: When a ground side abnormality notification notifying that an abnormality has occurred in the power transmitting device of the ground power feeding device is received from the ground power feeding device that is the source of the abnormality occurrence notification, the count number of the receptions is decreased. The moving body according to claim 4.

7. An abnormality determination device for determining an abnormality in a power transmission device of a contactless power supply system, Counting the number of times that a power transmission anomaly has occurred between the power transmitting device and a power receiving device that wirelessly receives the power transmitted from the power transmitting device, or the number of times that a notification notifying the occurrence of the power transmission anomaly has been received from an external device; When the number of times is equal to or greater than a predetermined number of times, it is determined that an abnormality exists in the power transmitting device. Abnormality determination device.

Images