Abnormality determination device

Abstract

The present invention relates to an abnormality determination device and an information providing device that determine whether an abnormality is due to a power transmitting device or a power receiving device when an abnormality occurs in power transmission. An abnormality determination device (1) has a processing section (13) that calculates, for each power receiving site, a ratio (R) of the number of mobile bodies (4) having a power transmission efficiency less than a predetermined value to the number of mobile bodies (4) having a power transmission efficiency of the predetermined value or more, based on power receiving history information of the plurality of mobile bodies (4) stored in a storage section (12), and determines an abnormality of the power transmitting device (2) or the power receiving device (5) based on the ratio (R) for each power receiving site.

Description

Technical Field

[0001] This invention relates to an anomaly detection device and an information providing device. Background Technology

[0002] Patent Document 1 discloses a vehicle configured to charge a battery via Dynamic Wireless Power Transfer while in motion.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-167898 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The wireless power supply system in motion has the following problems: when an anomaly occurs in the power transmission from the power supply device to the power receiving device, it is difficult to determine whether the cause of the anomaly lies with the power supply device installed on the road or with the power receiving device installed in the vehicle.

[0008] This invention addresses this problem and aims to enable the determination of whether the cause of the anomaly lies in the power supply device or the power receiving device.

[0009] Methods for solving problems

[0010] To address the aforementioned issues, one aspect of the present invention provides an anomaly detection device comprising: a processing unit; a communication unit capable of communicating with multiple mobile bodies equipped with power receiving devices, the power receiving devices receiving power wirelessly transmitted from a power transmission device installed on a road; and a storage unit storing power receiving history information received from the mobile bodies. The power receiving history information includes information on the power receiving location using the power received by the power receiving device and the power received, or information on the power transmission efficiency calculated based on the power received. The processing unit is configured to: calculate, for each power receiving location, a ratio of the number of mobile bodies with a power transmission efficiency less than a predetermined value to the number of mobile bodies with a power transmission efficiency of the predetermined value or higher, based on the power receiving history information of the multiple mobile bodies stored in the storage unit; and determine an anomaly of the power transmission device or the power receiving device based on this ratio for each power receiving location.

[0011] In addition, in order to solve the above-mentioned problems, one aspect of the present invention provides an information providing device configured to provide a notification to the occupant of a mobile body equipped with a power receiving device that receives power wirelessly from a power transmission device installed on the road, indicating that an abnormality has occurred in the power receiving device.

[0012] Invention Effects

[0013] According to these embodiments of the present invention, in the event of an anomaly in the power transmission from the power transmitting device to the power receiving device, it is possible to determine whether the cause of the anomaly lies with the power transmitting device or the power receiving device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a wireless power supply system in motion.

[0015] Figure 2 The figures illustrate the detailed structure of the power transmission device and vehicle according to the first embodiment of the present invention.

[0016] Figure 3 This is a flowchart illustrating the processes performed between each vehicle and the server in order to aggregate the power receiving history information of each vehicle to the server.

[0017] Figure 4 This is a flowchart explaining the processes performed in server 1 to detect abnormalities in power transmission and determine whether the cause lies in the power transmitting device or the power receiving device, and the processes performed in vehicle 4 in conjunction with these processes.

[0018] Explanation of reference numerals in the attached figures

[0019] 1. Server (Anomaly Detection Device)

[0020] 11. Server Communications Department (Communications Department)

[0021] 12. Server Storage Department (Storage Department)

[0022] 13. Server Processing Department (Processing Department)

[0023] 2 Power transmission device

[0024] 4. Vehicles (mobile vehicles)

[0025] 5 Power receiving device

[0026] 44 HMI devices (information providing devices) Detailed Implementation

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, the same reference numerals are used to denote the same constituent elements.

[0028] (First Implementation)

[0029] Figure 1 This is a schematic structural diagram of the wireless power supply system 100 in motion according to the first embodiment of the present invention.

[0030] The wireless power supply system 100 in this embodiment includes a server 1, a plurality of power supply devices 2 arranged continuously at predetermined intervals along a road, a power supply device 3 for supplying power to each power supply device 2, and a power receiving device 5 (see reference) equipped with a power receiving device for receiving power wirelessly supplied from the power supply devices 2. Figure 2 4. It should be noted that, in the following description, the road equipped with the power supply device 2 will be referred to as the "electrified road" as needed.

[0031] Server 1 includes a server communication unit 11, a server storage unit 12, and a server processing unit 13.

[0032] The server communication unit 11 has a communication interface circuit for connecting the server 1 to the network 6 via, for example, a gateway, and is configured to communicate with the vehicle 4.

[0033] The server storage unit 12 has storage media such as HDD (Hard Disk Drive), optical recording media, and semiconductor memory, and stores various computer programs and data used in processing in the server processing unit 13.

[0034] Server processing unit 13 has one or more processors and their peripheral circuitry. Server processing unit 13 executes various computer programs stored in server storage unit 12, and comprehensively controls the overall operation of server 1; for example, it is a CPU (Central Processing Unit). Regarding the processing performed by server processing unit 13 and subsequently server 1, see [reference needed]. Figures 3-4 Then it will be discussed.

[0035] Figure 2 This diagram illustrates the detailed structure of the power transmission device 2 and the vehicle 4 in this embodiment.

[0036] The power transmission device 2 includes a power transmission resonator 21, a power transmission circuit 22, a power transmission side receiver 23, a foreign object detection device 24, a living object protection device 25, and a power transmission control device 20. The power transmission circuit 22, the power transmission side receiver 23, the foreign object detection device 24, and the living object protection device 25 are connected to the power transmission control device 20 via an internal network 28 within the power transmission device 2 that conforms to standards such as CAN (Controller Area Network).

[0037] The power transmission resonator 21 is a resonant circuit containing a power transmission coil, configured to resonate at a predetermined resonant frequency f0. A power receiving resonator 51 corresponding to the power transmission resonator 21 is provided in the vehicle 4. The power receiving resonator 51 is a resonant circuit containing a power receiving coil, configured to resonate at the same resonant frequency f0 as the power transmission resonator 21. By causing the power transmission resonator 21 to resonate, the power transmission coil of the power transmission resonator 21 and the power receiving coil of the power receiving resonator 51, which are spatially separated, are magnetically coupled, enabling power transmission (wireless power supply) from the power transmission device 2 to the power receiving device 5.

[0038] The power transmission circuit 22 is a circuit equipped with a converter, configured to convert the DC power supplied from the power supply unit 3 into desired AC power based on a control signal from the power transmission control device 20 and supply it to the power transmission resonator 21. The power transmission circuit 22 is equipped with a power transmission side current sensor 26 for detecting the current (hereinafter referred to as "power transmission side current") I1 flowing into the power transmission resonator 21 and a power transmission side voltage sensor 27 for detecting the voltage (hereinafter referred to as "power transmission side voltage") V1 applied to the power transmission resonator 21. The power transmission side current I1 and power transmission side voltage V1 detected by each sensor 26 and 27 are respectively input to the power transmission control device 20.

[0039] The power supply receiver 23 communicates wirelessly with the power receiving transmitter 53 mounted on each of the vehicles 4 via a pre-defined wireless communication line, and receives an approach signal transmitted from the power receiving transmitter 53. The approach signal is used to notify the vehicle 4 that it is approaching the power supply device 2, and is a signal used to urge the power supply device 2 to supply power upon receiving the approach signal.

[0040] Foreign object detection device 24 detects metallic foreign objects present in the path between power transmission device 2 and power receiving device 5. This is because if power transmission from power transmission device 2 to power receiving device 5 is carried out with metallic foreign objects present in the space between power transmission device 2 and power receiving device 5, the metallic foreign objects may be heated and the power transmission efficiency may decrease. Foreign object detection device 24 sends foreign object detection information regarding the presence of metallic foreign objects to power transmission control device 20 according to a request from power transmission control device 20. The foreign object detection device 24 is not particularly limited to the method of detecting metallic foreign objects and can use various known methods such as metal detectors.

[0041] The biological protection device 25 detects living organisms (such as humans or animals) present in the vicinity of the power transmission device 2. This is because if the power transmission device 2 is activated in the presence of living organisms, the organisms will be exposed to the leaked magnetic field from the power transmission device 2, which may have adverse health effects. The biological protection device 25 sends biological detection information regarding the presence of living organisms to the power transmission control device 20 according to a request from the power transmission control device 20. The biological protection device 25 is not particularly limited in its method of detecting living organisms and can use various known methods such as image recognition.

[0042] The power supply control device 20 includes a communication interface 201, a storage unit 202, and a power supply processing unit 203.

[0043] Communication interface 201 is a communication interface circuit used to connect the internal network 28 within the power transmission device 2 to the power transmission control device 20.

[0044] The storage unit 202 has storage media such as HDD, optical recording medium, and semiconductor memory, and stores various computer programs and data used in the processing in the power transmission processing unit 203.

[0045] The power transmission processing unit 203 has one or more processors and their peripheral circuits. The power transmission processing unit 203 executes various computer programs stored in the storage unit 202 to comprehensively control the power transmission device 2, such as a CPU.

[0046] If the power transmission processing unit 203 and the power transmission control device 20 receive a proximity signal via the power transmission side receiver 23, for example, the foreign object detection device 24 and the biological protection device 25 are activated to obtain foreign object detection information and biological detection information. Furthermore, if the power transmission control device 20 detects the presence of at least one of a metallic foreign object or a living organism, it controls the power transmission circuit 22 in a manner that prevents power transmission from the power transmission device 2 to the power receiving device 5. On the other hand, if the power transmission control device 20 does not detect the presence of a metallic foreign object or a living organism, it ensures that the transmitted power P1[W] is a predetermined target transmitted power P1. tgt The power supply circuit 22 is controlled in a manner that allows it to operate normally.

[0047] In this embodiment, the target power supply P1 is... tgt The value is set to a preset fixed value, but for example, if the proximity signal contains information related to the power demanded by the source vehicle 4 of the proximity signal, the target power supply P1 can also be set. tgt Set to require power supply.

[0048] It should be noted that the power supply current I1 is related to the coupling coefficient k, which represents the degree of magnetic coupling between the power supply coil of the power supply resonator 21 and the power receiving coil of the power receiving resonator 51. The smaller the coupling coefficient k, the larger the power supply current I1 tends to be. Therefore, after receiving a proximity signal, for example, by monitoring the power supply current I1, it is possible to determine whether the vehicle 4 is approaching or disengaging from the power supply device 2, and control of the power supply circuit 22 can be started or stopped based on this determination.

[0049] Vehicle 4 is equipped with a communication device 41, a map information storage device 42, a GPS receiver 43, an HMI device 44, a navigation device 45, a power receiving device 5, and a vehicle control device 40. The communication device 41, map information storage device 42, GPS receiver 43, HMI device 44, navigation device 45, and power receiving device 5 are connected to the vehicle control device 40 via an in-vehicle network 46 that conforms to standards such as CAN.

[0050] Communication device 41 is a vehicle-mounted terminal with wireless communication capabilities. Communication device 41 accesses network 6 (see reference 6) via wireless communication. Figure 1 Wireless base station 7 (see reference) connected via a gateway (not shown) or the like. Figure 1 This allows the vehicle 4 to connect to the network 6 via the wireless base station 7. Thus, communication occurs between the vehicle 4 and the server 1.

[0051] Map information storage device 42 stores map information including road location information, road category-related information (such as whether the road is an electrified road, etc.).

[0052] The GPS receiver 43 receives radio waves from artificial satellites to determine the latitude and longitude of the vehicle 4 and detects the current position of the vehicle 4. The GPS receiver 43 then sends the detected current position information of the vehicle 4 to the vehicle control device 40.

[0053] HMI device 44 is an interface for exchanging information with vehicle occupants. In this embodiment, HMI device 44 includes a display for providing various information to vehicle occupants, a speaker, and a touch panel (or operation buttons) for vehicle occupants to input information. HMI device 44 sends input information entered by vehicle occupants to various devices that require that input information (e.g., a navigation device if the input information is a destination), and displays information received via the in-vehicle network 46 on the display, thereby providing information to vehicle occupants.

[0054] The navigation device 45 is a device that guides the vehicle 4 to a destination set by the vehicle occupants via the HMI device 44. For example, the navigation device 45 sets a driving route to the destination based on the current location information and map information of the vehicle 4, and sends information related to the set driving route as navigation information to the vehicle control device 40, the HMI device 44, etc.

[0055] The power receiving device 5 includes a power receiving resonator 51, a power receiving circuit 52, and a power receiving side transmitter 53.

[0056] As mentioned above, the receiving resonator 51 is a resonant circuit containing a receiving coil, configured to resonate at the same resonant frequency f0 as the sending resonator 21.

[0057] The power receiving circuit 52 is a circuit equipped with a rectifier and a DC / DC converter, configured to convert the AC power output from the power receiving resonator 51 into DC power using the rectifier and supply it to the electrical load 47 via the DC / DC converter. Examples of the electrical load 47 include, for example, a battery or an electric motor, but it is not particularly limited. In this embodiment, the power receiving circuit 52 is connected to the battery, which serves as the electrical load 47. The power receiving circuit 52 is equipped with a power receiving current sensor 54 for detecting the output current (hereinafter referred to as "power receiving side current") I2 of the rectifier and a power receiving voltage sensor 55 for detecting the output voltage (hereinafter referred to as "power receiving side voltage") V2 of the rectifier. The power receiving current I2 and power receiving voltage V2 detected by each sensor 54 and 55 are respectively input to the vehicle control device 40.

[0058] The power receiving transmitter 53 communicates wirelessly with the power supply receiver 23 of each power supply device 2 using a predetermined wireless communication line, and sends the aforementioned proximity signal to each power supply device 2.

[0059] The vehicle control unit 40 includes a communication interface 401, a storage unit 402, and a vehicle processing unit 403.

[0060] Communication interface 401 is a communication interface circuit used to connect the in-vehicle network 46 to the vehicle control device 40.

[0061] The storage unit 402 has storage media such as HDD, optical recording medium, and semiconductor memory, and stores various computer programs and data used in the processing in the vehicle processing unit 403.

[0062] The vehicle processing unit 403 has one or more processors and their peripheral circuitry. The vehicle processing unit 403 executes various computer programs stored in the storage unit 402 to comprehensively control the vehicle 4, such as a CPU.

[0063] If the vehicle processing unit 403 and the vehicle control device 40 detect that the vehicle 4 is approaching an electrified road, they will start transmitting an approach signal via the power receiving transmitter 53, and control the power receiving circuit 52 (DC / DC converter) to control the power receiving voltage V2 to the target power receiving voltage V2. tgt This is because the power transfer efficiency η between resonators is related to the received voltage V2. In this embodiment, the target received voltage V2 is... tgt Setting it to achieve the desired power transmission efficiency η tgt The specified voltage value.

[0064] It should be noted that the method of detecting proximity to an electrified road is not particularly limited. For example, it can be detected based on the current location information and navigation information (driving route) of vehicle 4. If the infrastructure equipment located near the electrified road is sending a signal to vehicle 4 that it will be traveling on the electrified road, it can also be detected by receiving the signal.

[0065] However, the wireless power supply system 100 in motion has the following problems: Since the power supply device 2 and the power receiving device 5 are physically separated, if an abnormality occurs in the power transmission from the power supply device 2 to the power receiving device 5, it is necessary to determine whether the cause of the abnormality lies in the power supply device 2 or the power receiving device 5.

[0066] Therefore, in this embodiment, the power receiving history information of each vehicle 4 is collected to the server 1, enabling the detection of power transmission anomalies and the determination of whether the cause lies with the power supply device 2 or the power receiving device 5 based on the collected power receiving history information of each vehicle 4 on the server 1. In this embodiment, the power receiving history information of the vehicle 4 is the actual power transmission efficiency η calculated based on the received power P2[W] received by the power receiving device 5 during operation on the electrified road. real The power transmission efficiency η was obtained. real The location information of the site (i.e., the power receiving location of the power receiving P2) and the identification information of this vehicle are linked together.

[0067] The abnormal detection and control of power transmission in this embodiment will be described below.

[0068] Figure 3 This is a flowchart illustrating the processes performed between each vehicle 4 and the server 1 in order to collect the power receiving history information of each vehicle 4 to the server 1.

[0069] In step S11, the vehicle control device 40 of each vehicle 4 determines whether the vehicle 4 is traveling on an electrified road based on its current location information and map information. If the vehicle 4 is traveling on an electrified road, the vehicle control device 40 of each vehicle 4 proceeds to step S12. On the other hand, if the vehicle 4 is not traveling on an electrified road, the vehicle control device 40 of each vehicle 4 ends the current processing.

[0070] In step S12, the vehicle control device 40 of each vehicle 4 calculates the received power P2 using the power receiving device 5 based on the received current I2 and the received voltage V2, and then divides it by the target power P1. tgt To calculate the power transmission efficiency η real (=P2 / P1 tgt ).

[0071] It should be noted that regarding the target power supply P1 tgt The value of the target power supply P1 is as described in this embodiment. tgt If the value is set to a fixed value, then the value can be obtained by storing it in the storage unit 402 of the vehicle control device 40 of each vehicle 4. Alternatively, for example, if the vehicle control device 40 of each vehicle 4 calculates the required power based on the state of the electrical load 47 (e.g., the battery charge rate if the electrical load 47 is a battery) and includes information related to the required power in the proximity signal, then the required power can be set as the target power supply P1. tgt .

[0072] In step S13, the vehicle control device 40 of each vehicle 4 generates a power transmission efficiency η. real The power transmission efficiency η was obtained. real The location information of the site (i.e., the power receiving site of the power receiving P2) was obtained, and the power transmission efficiency η was obtained. real The system establishes associated power receiving history information by calculating the current I2 and voltage V2 of the vehicle 4 used in the power receiving process and the vehicle's identification information, and saves it to the storage unit 402.

[0073] In step S14, the vehicle control device 40 of each vehicle 4 determines whether the amount of power receiving history information stored in the storage unit 402 has reached or exceeded a predetermined amount. If the amount of power receiving history information is greater than or equal to the predetermined amount, the vehicle control device 40 of each vehicle 4 proceeds to step S15. On the other hand, if the amount of power receiving history information is less than the predetermined amount, the vehicle control device 40 of each vehicle 4 terminates the current processing.

[0074] In step S15, the vehicle control device 40 of each vehicle 4 sends all the power receiving history information stored in the storage unit 402 to the server 1, and deletes the sent power receiving history information from the storage unit 402.

[0075] In step S16, server 1 saves the power receiving history information received from each vehicle 4 to server storage unit 12. In this way, server 1 collects the power receiving history information of each vehicle 4.

[0076] Figure 4 This is a flowchart explaining the processes performed in server 1 to detect abnormalities in power transmission and determine whether the cause lies in power transmission device 2 or power receiving device 5, and the processes performed in vehicle 4 accompanying these processes.

[0077] In step S21, server 1 determines whether the amount of collected power receiving history information (i.e., the power receiving history information of each vehicle 4) stored in server storage unit 12 is greater than or equal to a predetermined amount. If the amount of collected power receiving history information is greater than or equal to the predetermined amount, server 1 proceeds to step S22. On the other hand, if the amount of collected power receiving history information is less than the predetermined amount, server 1 determines that the amount of information used to detect abnormalities in power supply device 2 is insufficient and terminates the current processing.

[0078] In step S22, server 1 refers to the collected power receiving history information (i.e., power transmission efficiency η) real And the power transmission efficiency η was obtained. real The location information of the site was linked to the power receiving history information of each vehicle 4, and the power transmission efficiency η was obtained. real For each location (i.e., each power receiving location), calculate the power transmission efficiency η. real Less than the specified value η1 (<η) tgt The number of vehicles 4 (i.e., vehicles 4 that may not be transmitting power normally) is NC. abnl and power transmission efficiency η real The number of vehicles NC that have normally transmitted electricity, i.e., vehicles 4 with a specified value η1 or higher. norm Calculate their ratio (hereinafter referred to as "ratio R").

[0079] In this embodiment, the power transmission efficiency η real The number of vehicles NC that are less than the specified value η1 (4) abnl Relative to power transmission efficiency η real The number of vehicles NC with a specified value η1 or higher. norm The ratio is set as the number of units ratio R (i.e., R=NC). abnl / NC norm However, the number of units can also be NC.norm Compared to the number of NC units abnl The ratio is set as the number of units ratio R.

[0080] In step S23, server 1 determines whether there are locations where the number of units R is less than a predetermined first threshold R1. Locations where the number of units R is less than the first threshold R1 are, in other words, locations where the NC of vehicle 4 is not transmitting power normally. abnl The number of vehicles NC that have normally received power transmission (4) norm Very few locations. Therefore, it can be assumed that the anomaly occurred not in the power supply device 2, but in the power receiving device 5 of the specific vehicle 4. Thus, if there are locations where the number of units R is less than the first threshold R1, then server 1 proceeds to step S24. On the other hand, if there are no locations where the number of units R is less than the first threshold R1, then server 1 proceeds to step S26.

[0081] In step S24, server 1, referring to the collected power receiving history information, determines the power transmission efficiency η for each location where the number of units R is less than a predetermined first threshold R1. real Vehicle 4 is less than the specified value η1. Furthermore, server 1 sends an abnormal communication notification to the identified vehicle 4, indicating that an anomaly has occurred in the power receiving device 5.

[0082] In step S25, if the vehicle control device 40 of vehicle 4 receives an abnormal communication notification, it notifies the vehicle occupants via the HMI device 44 that an abnormality has occurred in the power receiving device 5 of the vehicle.

[0083] In step S26, server 1 determines whether there are locations where the number of vehicles 4 has a ratio R of more than or equal to a predetermined second threshold R2. It should be noted that the second threshold R2 is a value larger than the first threshold. Locations where the number of vehicles 4 has a ratio R of more than or equal to the second threshold R2 are, in other words, locations where the NC (Noise, Communication, and Control) of vehicles 4 is not transmitting power normally. abnl The number of vehicles NC that have normally received power transmission (4) norm There are a large number of locations. Therefore, it can be assumed that an anomaly has occurred in the power supply device 2 at that location. If there are locations where the number of units R1 is greater than or equal to the second threshold R2, then server 1 proceeds to step S27. Conversely, if there are no locations where the number of units R1 is greater than or equal to the second threshold R2, then server 1 terminates the current processing.

[0084] In step S27, server 1 determines that a power supply device 2 installed at a location where the number of units R is greater than or equal to a second threshold R2 has malfunctioned. In this case, server 1 may also notify each vehicle 4 of the location where the malfunctioning power supply device 2 is installed.

[0085] The server 1 (anomaly detection device) of this embodiment described above includes: a server processing unit 13 (processing unit); a server communication unit 11 (communication unit) capable of communicating with multiple vehicles 4 (mobile bodies) equipped with power receiving devices 5 that receive power wirelessly from a power transmission device 2 installed on a road; and a server storage unit 12 (storage unit) for storing power receiving history information received from the vehicles 4. The power receiving history information includes the power receiving location and the power received using the power receiving device 5, or a power transmission efficiency η calculated based on the power received. real The information. Furthermore, the server processing unit 13 is configured to: based on the power receiving history information of multiple vehicles 4 stored in the server storage unit 12, convert the power transmission efficiency η... real The number of vehicles NC that are less than the specified value η1 (4) abnl With power transmission efficiency η real The number of vehicles NC with a specified value η1 or higher. norm The number ratio R is calculated for each power receiving location, and the abnormality of the power supply device 2 or the power receiving device 5 is determined based on the number ratio R of each power receiving location.

[0086] In this embodiment, the number of units R is set as the power transmission efficiency η. real The number of vehicles NC that are less than the specified value η1 (4) abnl Relative to power transmission efficiency η real The number of vehicles NC with a specified value η1 or higher. norm The server processing unit 13 is configured to determine the power transmission efficiency η at power receiving locations where the ratio of the number of units R is less than a predetermined first threshold R1. real The power receiving device 5 of vehicle 4, which is less than the specified value η1, malfunctioned. Furthermore, the server processing unit 13 is configured to determine that the power supply device 2, located in a power receiving location where the number of units R is greater than or equal to a specified second threshold R2 (which is greater than a first threshold R1), malfunctioned.

[0087] In this way, the power transmission efficiency η can be calculated for each power receiving location. real The number of vehicles NC that are less than the specified value η1 (4) abnl With power transmission efficiency η real The number of vehicles NC with a specified value η1 or higher. norm The ratio of the number of units to R can identify the NC of vehicle 4 that is not transmitting power properly. abnl The number of vehicles NC that have normally received power transmission (4) norm NC in fewer locations and vehicles that do not have proper power transmission abnl The number of vehicles NC that have normally received power transmission (4) norm Many places.

[0088] Furthermore, the number of vehicles 4 that were not transmitting power normally (NC) abnl The number of vehicles NC that have normally received power transmission (4) norm In fewer locations, it can be assumed that the anomaly occurred not in the power supply device 2, but in the power receiving device 5 of a specific vehicle 4. On the other hand, the number NC of vehicles 4 that are not transmitting power normally... abnl In many locations, it can be assumed that an anomaly has occurred in the power transmission device 2.

[0089] Therefore, according to this embodiment, when an abnormality occurs in the power transmission from the power supply device 2 to the power receiving device 5, it is possible to determine whether the cause of the abnormality lies in the power supply device 2 or the power receiving device 5.

[0090] Furthermore, the server processing unit 13 in this embodiment is configured to process η at power receiving locations where the number of units R is less than a first threshold R1. real Vehicle 4, whose value is less than the specified value η1, sends a notification that an abnormal communication notification has been generated in the power receiving device 5.

[0091] Therefore, the occupants of vehicle 4 can be notified that the power receiving device 5 of the vehicle has malfunctioned, thus preventing the vehicle 4 from being driven under the condition that the power receiving device 5 has malfunctioned and thus preventing insufficient charging.

[0092] Furthermore, the HMI device 44 (information providing device) in this embodiment is configured to provide notification to the occupants of a vehicle 4 (mobile vehicle) equipped with a power receiving device 5 that receives power wirelessly from a power transmission device 2 installed on the road, indicating that an anomaly has occurred in the power receiving device 5. Thus, even if an anomaly occurs in the power transmission from the power transmission device 2 to the power receiving device 5, the occupants of the vehicle 4 can determine on which side the anomaly occurred.

[0093] The embodiments of the present invention have been described above. However, the above embodiments only illustrate a part of the application examples of the present invention and are not intended to limit the technical scope of the present invention to the specific structure of the above embodiments.

[0094] For example, in the above implementation, the power transmission efficiency η calculated based on the received power P2 is... real The power transmission efficiency η was obtained. real The location information of the location where the power was received and the vehicle's identification information are associated together, and this information is sent from each vehicle 4 to the server 1 as power receiving history information. Alternatively, the power received P2, the location information of the location where the power received P2 was received, and the vehicle's identification information can be associated together, and this information can also be sent from each vehicle 4 to the server 1 as power receiving history information. In the server 1, the power received is converted into power transmission efficiency η. realThat is, in the above-described embodiments, the power receiving history information may also include information about the power received P2 by the power receiving device 5 and the location where the power was received.

[0095] Furthermore, in the above embodiment, each power supply device 2 is equipped with a power supply control device 20, but it is also possible to use one power supply control device 20 to control multiple power supply devices 2. In this case, the control performed by the server 1 in the above embodiment can also be performed by the power supply control device 20.

Claims

1. An anomaly detection device, comprising: Processing Department; The communication unit is capable of communicating with multiple mobile bodies equipped with power receiving devices, which receive power wirelessly from a power transmission device installed on the road; and The storage unit stores the power receiving history information received from the mobile body. in, The power receiving history information is information that establishes a correlation between power transmission efficiency, the location information of the power receiving site that achieved the power transmission efficiency, and the identification information of the moving body. The power transmission efficiency is calculated by dividing the power received by the power receiving device by the target power supply. When the amount of power receiving history information stored in the mobile body by the communication unit reaches a predetermined amount or more, the communication unit receives the power receiving history information from the mobile body. When the amount of power receiving history information of the multiple mobile bodies stored in the storage unit is a predetermined amount or more, the processing unit calculates, based on the power receiving history information of the multiple mobile bodies stored in the storage unit, the ratio of the number of mobile bodies with power transmission efficiency less than a predetermined value to the number of mobile bodies with power transmission efficiency of the predetermined value or more, for each power receiving location. The processing unit determines the malfunction of the power supply device or the power receiving device based on the ratio of the number of units in each of the power receiving locations. The processing unit determines that the power receiving device of a mobile body with a power transmission efficiency of less than a predetermined value has malfunctioned at the power receiving location where the number of units is less than a predetermined first threshold. Based on the identification information, the processing unit identifies the mobile body with the power transmission efficiency of less than the predetermined value at the power receiving location where the number of units is less than the first threshold, and sends an abnormal communication notification to the identified mobile body to indicate that an abnormality has occurred in the power receiving device. The processing unit determines that a power supply device located at a power receiving location where the number of devices exceeds a predetermined second threshold has malfunctioned, and notifies multiple moving bodies of the location where the malfunctioning power supply device is located. The second threshold is larger than the first threshold. The number ratio is the ratio of the number of mobile bodies with a power transmission efficiency less than a specified value to the number of mobile bodies with a power transmission efficiency greater than or equal to the specified value.

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