JP2016047983A - Electronic key system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic key system capable of preventing failure of communication by noise generated from a power supply device for executing noncontact power supply.SOLUTION: An electronic key system permits control of an on-vehicle device of a vehicle 20 on condition of establishing ID collation by radiocommunication between an electronic key 10 and the vehicle 20. The electronic key system transmits a stopping signal Ss1 for temporarily stopping power supply to at least one of a power supply device 50 for executing noncontact power supply to the vehicle 20 and a power supply device 50 for executing the noncontact power supply to the other vehicle around the vehicle 20 before the ID collation or in the middle of the ID collation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic key system that performs ID collation by wireless communication between a vehicle to which contactless power feeding is performed and an electronic key.

  2. Description of the Related Art Conventionally, an electronic key system that operates an in-vehicle device by performing ID collation between the electronic key and a vehicle by wireless communication is known (see, for example, Patent Document 1). In this type of electronic key system, a request signal, for example, a radio wave in the LF (Low Frequency) band is transmitted from a transmission antenna mounted on a vehicle at the time of ID verification.

  When the electronic key receives a request signal from the vehicle, the electronic key transmits the key ID stored in its own memory to the vehicle as a radio signal in, for example, a UHF (Ultra High Frequency) band.

  When the vehicle verification ECU receives the key ID signal transmitted from the electronic key at the receiving antenna, the vehicle verification ECU performs ID verification based on the key ID signal. When the ID verification by the verification ECU is established, for example, locking / unlocking of the door of the vehicle, starting of the engine, or the like is permitted or executed.

JP 2005-262915 A

  By the way, recently, a so-called non-contact type power feeding device has been proposed that transmits electric power to a vehicle equipped with a large-capacity secondary battery without requiring connection by a contact. Since this power feeding device transmits electric power to the power receiving unit of the vehicle without using a contact, it may become a noise generation source. This noise can interfere with the communication of the electronic key system.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electronic key system that can prevent communication failure due to noise generated from a power feeding device that performs non-contact power feeding. .

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
An electronic key system that solves the above-described problem is an electronic key system that permits control of an in-vehicle device of a host vehicle on the condition that ID verification by wireless communication is established between the electronic key and the host vehicle corresponding to the electronic key. The power supply is temporarily applied to at least one of the power supply apparatus that performs non-contact power supply to the host vehicle and the power supply apparatus that performs non-contact power supply to other vehicles around the host vehicle before or during ID verification. The gist is to send a stop signal to stop.

  According to this configuration, since a stop signal is transmitted to the power supply apparatus before ID verification or during ID verification, ID verification is performed while power supply by the power supply apparatus is temporarily stopped based on the stop signal. be able to. For this reason, communication failure due to noise from the power feeding device can be prevented.

  In the electronic key system, it is preferable that the stop signal is transmitted when the start operation is detected by a start operation detecting unit that detects a start operation for starting the power source of the host vehicle.

  According to this configuration, since the stop signal is transmitted when the start operation is performed, it is possible to prevent the ID verification for starting the power source from being unsatisfactory due to noise of the power feeding device.

  Regarding the electronic key system, the host vehicle or the electronic key includes a signal strength detection unit that detects the strength of the received signal, and when the signal strength detection unit receives a signal that exceeds a preset threshold, Preferably, the stop signal is transmitted.

  Noise generated from the power feeding device has a signal strength larger than general communication noise. According to this configuration, since the stop signal is transmitted when the signal strength of the received signal exceeds the threshold value, the stop signal is used only when it is assumed that there is a high possibility of communication failure due to noise generated from the power supply device. , And the power feeding by the surrounding power feeding device can be temporarily stopped.

  In the electronic key system, the stop signal is preferably transmitted when the key operation is detected by a key operation detection unit that detects a preset key operation on the electronic key.

According to this configuration, the stop signal is transmitted with the electronic key being operated as a trigger. For this reason, it is possible to suppress transmission of a stop signal in a scene where it is not necessary to stop power feeding.
In the electronic key system, the electronic key includes a determination unit that determines whether a received signal is a signal transmitted from the host vehicle, and the signal received by the electronic key is determined by the determination unit. The stop signal is preferably transmitted when it is determined that the signal is transmitted from the host vehicle.

  According to this configuration, since the stop signal is transmitted triggered by the signal transmitted from the own vehicle being received by the electronic key, when the electronic key is outside the signal transmission range centered on the own vehicle. The stop signal is not transmitted. For this reason, since the stop signal is transmitted only when the electronic key is in a range close to the host vehicle, it is possible to suppress the transmission of the stop signal in a scene where it is not necessary to stop power feeding.

  In the electronic key system, the electronic key transmits the stop signal to the host vehicle, and the host vehicle that receives the stop signal from the electronic key supplies the stop signal to the host vehicle. It is preferable to transmit to at least one of the power supply device that supplies power to the device and other vehicles around the host vehicle.

  According to this configuration, the stop signal transmitted from the electronic key is transmitted to the power feeding device via the host vehicle. For this reason, as long as the own vehicle receives the stop signal, the stop signal is transmitted from the own vehicle at a preset position with respect to the power feeding device, so that the power feeding device can reliably receive the stop signal. it can.

  In the electronic key system, the own vehicle or the electronic key is configured to emit infrared light to at least one of an infrared receiving unit of a power feeding device that feeds power to the own vehicle and an infrared receiving unit of a power feeding device that feeds power to another vehicle. It is preferable to provide an infrared transmitter that transmits the stop signal, which is a signal.

  The noise radiated from the power feeding device is a radio wave having an LF band or a frequency close thereto. According to this configuration, since the stop signal that is an infrared signal that does not interfere with the radio wave having the LF band or a frequency close thereto is transmitted, the noise generated from the power feeding device does not affect the stop signal, and the noise is the stop signal. Can be prevented from being blocked.

  In the electronic key system, the own vehicle or the electronic key transmits the stop signal in the UHF band to at least one of a power feeding device that feeds power to the own vehicle and a power feeding device that feeds power to another vehicle. It is preferable to provide a transmission unit.

  The noise radiated from the power feeding device is a radio wave having an LF band or a frequency close thereto. According to this configuration, since a stop signal in the UHF band that does not interfere with radio waves having a frequency close to or in the LF band is transmitted, the noise generated from the power supply apparatus does not affect the stop signal, and the noise is the stop signal. It is possible to suppress interference with reception.

  According to the present invention, communication failure due to noise generated from the power feeding device can be prevented.

1 is a block diagram showing a schematic configuration of a first embodiment of an electronic key system. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in 1st Embodiment. The sequence chart which shows the communication operation | movement of the electronic key, vehicle, and electric power feeder in 1st Embodiment. The block diagram which shows schematic structure of 2nd Embodiment of an electronic key system. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in 2nd Embodiment. The sequence chart which shows the communication operation | movement of the electronic key, vehicle, and electric power feeder in 2nd Embodiment. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in a modification. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in a modification. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in a modification. The schematic diagram which shows the transmission aspect of the stop signal to the electric power feeder in a modification.

(First embodiment)
Hereinafter, a first embodiment of an electronic key system will be described with reference to FIGS.
As shown in FIG. 1, a vehicle 20 on which a vehicle-side electronic key system is mounted includes a hybrid vehicle including an engine 25 and a motor 43 as power sources and a secondary battery 42 as a power source of the motor 43. It is. Charging of the secondary battery 42 is controlled by a battery ECU (Electric Control Unit) 41.

  The vehicle 20 includes a power receiving unit 40 that receives the power transmitted from the power feeding device 50 in a non-contact manner. The power receiving unit 40 is, for example, a magnetic resonance type power receiving unit, and includes a resonance circuit having a coil. The power receiving unit 40 converts the current flowing through the coil into a direct current and supplies it to the secondary battery 42 to charge the secondary battery 42. When charging the secondary battery 42 with the power supply device 50, the user parks the vehicle 20 in a predetermined area set for the power supply device 50.

  The power feeding device 50 includes a power transmission unit 52 connected to a power source. The power transmission unit 52 transmits power to the vehicle 20 and the power reception unit 40 by, for example, a magnetic resonance transmission method. That is, the power transmission unit 52 and the power reception unit 40 include coils having the same resonance frequency. By supplying a high-frequency current to the coil of the power transmission unit 52, the vibration of the magnetic field is transmitted to the resonance circuit of the power reception unit 40. Thereby, electric power can be supplied from the power transmission unit 52 to the power reception unit 40.

  The power supply device 50 includes a power supply control unit 51. The power supply control unit 51 controls energization to the coil of the power transmission unit 52 and the like. Furthermore, the power supply apparatus 50 includes an infrared receiving unit 53 and a communication unit 54 that receive infrared signals. The infrared receiving unit 53 demodulates the received infrared signal and outputs the demodulation result to the power supply control unit 51. In addition, the communication unit 54 communicates with the adjacent power feeding device 50 via the communication cable 56.

  Next, the electronic key system will be described. The electronic key system includes a vehicle-side key system 21 provided in the vehicle 20 and the electronic key 10. The vehicle-side key system 21 performs narrow area wireless communication with the electronic key 10. Hereinafter, ID verification by the electronic key system is referred to as “smart verification”, and communication performed by the verification is referred to as “smart communication”.

  The electronic key 10 includes a key control unit 11, a reception antenna 12 that receives radio waves, and a transmission antenna 13 that transmits radio waves. In the memory 11 a of the key control unit 11, an electronic key ID 11 b is stored as a unique ID of the electronic key 10 corresponding to the vehicle 20. The reception antenna 12 can receive radio waves in, for example, an LF (Low Frequency) band. The transmission antenna 13 can transmit radio waves in a frequency band higher than the frequency band that can be received by the reception antenna 12, and transmits radio waves in the UHF (Ultra High Frequency) band, for example.

  The electronic key 10 also includes a key operation unit 19a for locking and unlocking the door of the vehicle 20, and a key operation detection unit 19 for detecting an operation of the key operation unit 19a. The key operation detection unit 19 detects an operation of the key operation unit 19 a and outputs an operation detection signal to the key control unit 11.

Next, the configuration of the vehicle side key system 21 will be described.
The vehicle-side key system 21 includes a verification ECU 22, an out-of-vehicle transmitter 26, an in-vehicle transmitter 27, and a vehicle receiver 28. In the memory 22a of the verification ECU 22, an electronic key ID 22b that is an identifier of the electronic key 10 corresponding to the vehicle 20 is stored. This electronic key ID 22 b indicates the same ID as the electronic key ID 11 b stored in the electronic key 10.

  The vehicle outside transmitter 26 transmits radio waves to the outside of the vehicle in the smart verification communication. The in-vehicle transmitter 27 transmits radio waves into the vehicle in smart verification communication. The vehicle transmitter 26 and the vehicle transmitter 27 can transmit, for example, LF band radio waves. The vehicle receiver 28 receives radio waves transmitted from the electronic key 10. The vehicle receiver 28 can receive, for example, UHF radio waves. The external transmitter 26, the in-vehicle transmitter 27, and the vehicle receiver 28 are electrically connected to the verification ECU 22.

  In addition, the vehicle side key system 21 includes an infrared transmission unit 23. The infrared transmitter 23 transmits, for example, an infrared signal that has been subjected to pulse phase modulation to the infrared receiver 53 of the power supply device 50 under the control of the verification ECU 22.

  This vehicle side key system 21 performs smart communication outside the vehicle at the timing when the electronic key 10 enters the communication area of the LF radio wave formed outside the vehicle by the transmitter 26 outside the vehicle. Specifically, when the electronic key 10 that has entered the communication area receives a wake signal transmitted from the outside transmitter 26, the electronic key 10 is activated and returns an ACK signal. Various verifications such as vehicle code verification, challenge response authentication, and electronic key verification are performed between the electronic key 10 and the vehicle-side key system 21. When all of these verifications are established, verification ECU 22 determines that smart verification outside the vehicle has been established, and permits or executes locking / unlocking of the vehicle door. Further, even in the vehicle, when collation is established by performing similar in-vehicle smart communication between the in-vehicle transmitter 27 and the electronic key 10, the engine 25 is allowed to start.

  The vehicle 20 includes an immobilizer system in addition to the vehicle side key system 21. This immobilizer system enables wireless ID verification with the vehicle 20 even when the battery of the electronic key 10 is not sufficient. The communication of the immobilizer system is short-range wireless communication such as RFID (Radio Frequency IDentification) having a communication distance of several centimeters to several tens of centimeters. Hereinafter, communication of the immobilizer system is referred to as “immobilizer communication”, and ID verification by the communication is referred to as “immobilizer verification”.

  The immobilizer system includes a communication antenna 32 provided on the vehicle 20 and a communication antenna 14 provided on the electronic key 10. The communication antenna 32 of the vehicle 20 is a coil or the like provided on the outer periphery of the start switch 30 for starting the engine 25.

  These communication antennas 14 and 32 are antennas that can transmit and receive short-range radio waves. The key control unit 11 of the electronic key 10 stores a transponder ID 11c. Further, the memory 22 a of the verification ECU 22 of the vehicle 20 stores a transponder ID 22 c corresponding to the transponder ID 11 c of the electronic key 10.

  When the remaining battery level of the electronic key 10 becomes less than a usable level, smart communication cannot be executed, so immobilizer communication is performed. When the electronic key 10 is held over the communication antenna 32 of the vehicle 20, the transponder ID 11 c of the electronic key 10 is transmitted to the vehicle 20 by, for example, load modulation communication. The verification ECU 22 compares the transponder ID 11c of the electronic key with the transponder ID 22c registered in itself, and if they match, the start switch 30 permits switching of the vehicle power source and the like.

  The vehicle 20 includes a body ECU 35 and a hybrid ECU 36. The verification ECU 22, the body ECU 35, and the hybrid ECU 36 are connected via a communication line 29 in the vehicle, and perform communication based on a standard such as CAN (Controller Area Network) or LIN (Local Interconnect Network).

  The body ECU 35 switches between locking and unlocking the door lock mechanism 37 of the vehicle 20 based on the collation result by the collation ECU 22. The door of the vehicle 20 is provided with a door button 38 for unlocking the door. The body ECU 35 and the door lock mechanism 37 correspond to an in-vehicle device.

  The hybrid ECU 36 starts the engine 25 of the vehicle 20 based on the collation result by the collation ECU 22. The hybrid ECU 36 calculates the power distribution of the engine 25 and the motor 43 and drives the engine 25 and the motor 43 based on the power distribution. The hybrid ECU 36 and the engine 25 correspond to an in-vehicle device.

  The start switch 30 of the vehicle 20 includes an operation detection unit 31 that detects an operation for starting an engine such as a push operation. The operation detection unit 31 is, for example, a switch such as a micro switch, or a sensor such as a magnetic sensor or an optical sensor. When the operation detection unit 31 detects an operation on the start switch 30, an operation detection signal is output to the verification ECU 22. Here, the operation on the operation detection unit 31 of the start switch 30 is defined as a start operation.

  The verification ECU 22 determines the power supply state of the vehicle 20 based on the operation detection signal input from the operation detection unit 31, and switches the power supply state. The power supply state of the vehicle 20 is switched to any of IG off, ACC on, IG on, and engine start, for example.

  By the way, when power is transmitted from the power feeding device 50 to the vehicle 20, noise is generated from the power feeding device 50 due to transmission of high-frequency power between the power transmitting unit 52 and the power receiving unit 40 that are separated from each other. The frequency band of this noise is the same as or close to the LF band transmitted from the outside transmitter 26. Further, the frequency band of noise generated from the power feeding device 50 is the same as or close to the frequency band of short-range wireless communication between the communication antennas 14 and 32 of the immobilizer system. Therefore, while power is being transmitted from the power supply device 50, signals generated in the frequency band close to the noise interfere with noise generated from the power supply device 50, and communication using the LF band of the electronic key system and the communication antenna 14 are performed. , 32 may interfere with the immobilizer communication.

  Next, a mode in which the vehicle 20 is supplied with power by the power supply device 50 will be described with reference to FIG. Here, the target vehicle 20 for which the ID verification using the electronic key 10 is performed is the own vehicle 20a, and the other vehicle is the other vehicle 101. Further, among the power feeding devices 50, a power feeding device 50a is a power feeding device 50a, and a power feeding device 50b is a power feeding device other than the own vehicle 20a.

  As shown in FIG. 2, noise due to power feeding occurs not only from the power feeding device 50a that feeds power to the host vehicle 20a, but also from the power feeding device 50b that feeds power to other vehicles 101 around the host vehicle 20a. For this reason, in order to establish at least smart verification or immobilizer verification in the vehicle, it is preferable to temporarily stop the power supply of those power supply devices 50 (50a, 50b).

  Therefore, when smart ID verification or immobilizer verification is performed in the vehicle, the verification ECU 22 of the host vehicle 20a transmits a stop signal Ss1 for temporarily stopping power supply of the power supply device 50 (50a, 50b) by infrared transmission. Transmit from unit 23. The infrared signal transmitted from the infrared transmitter 23 is received by the infrared receiver 53 of the power supply device 50a of the host vehicle 20a. Since the infrared signal does not overlap with the frequency of noise generated from the power feeding devices 50a and 50b, even if power feeding is performed by the power feeding devices 50a and 50b, the stop signal is received by the infrared receiving unit 53 of the power feeding device 50a. Ss1 can be received.

  For example, the infrared receiving unit 53 of the power feeding devices 50a and 50b is provided on a stand 55 that is disposed vertically above the ground or the like. The stand 55 is used for an operation for starting non-contact type power supply, and is provided in the vicinity of the power supply area Z, which is a position where the vehicle to be supplied with power is parked. Further, as shown in a lower power feeding area Z in FIG. 2, a power transmission unit 52 is provided in the power feeding area Z. In addition, as illustrated in FIG. 2, when a plurality of power feeding devices 50 are provided adjacent to each other, the power feeding devices 50 are connected to each other via a communication cable 56 so as to communicate with each other.

  When the infrared receiving unit 53 of the power supply device 50a receives the stop signal Ss1, the power supply control unit 51 uses the communication unit 54 to temporarily stop power supply to the power supply device 50 in the vicinity thereof. A stop command Ss10 is transmitted via the communication cable 56. For this reason, not only the power supply device 50a that has received the stop signal Ss1 by the infrared signal, but also the power supply by the surrounding power supply device 50b can be temporarily stopped.

Next, the communication operation of the electronic key system and the power feeding devices 50a and 50b will be described with reference to FIG.
As shown in FIG. 3, when the verification ECU 22 detects a start operation through the operation detection unit 31 (step S1), the verification ECU 22 transmits a stop signal Ss1 from the infrared transmission unit 23 to the power supply device 50a corresponding to the host vehicle 20a. (Step S2).

  When the stop signal Ss1 is received by the infrared receiving unit 53, the power supply control unit 51 of the power supply device 50a transmits a stop command Ss10 to the adjacent power supply device 50b via the communication cable 56 (step S3). The power supply device 50 that may interfere with smart verification and immobilizer verification in the vehicle can be determined in advance from the positional relationship of the plurality of power supply devices 50 and the like. For this reason, in each power supply apparatus 50, the power supply apparatus 50 that is the transmission destination of the stop command Ss10 is registered in advance. Alternatively, the stop command Ss10 to which the identifier of the power supply device 50 that is the transmission source is assigned may be transmitted to an unspecified number of power supply devices 50. In this case, the power supply control unit 51 temporarily stops power supply based on the reception of the identifier of the power supply device 50 that receives the stop command Ss10.

  The power supply control unit 51 (power supply device 50a) that has transmitted the stop command Ss10 temporarily stops power supply when its own power supply is being executed (step S4). Further, the power feeding device 50b that has received the stop command Ss10 via the communication cable 56 temporarily stops power feeding when power feeding is in progress (step S5).

  While the power supply from the power supply devices 50a and 50b is stopped, the verification ECU 22 performs smart verification or immobilizer verification (immobilizer verification) with the electronic key 10 (step S6).

  When the start operation of the vehicle 20 is performed in this way, a stop signal Ss1 based on an infrared signal is transmitted from the vehicle-side key system 21 regardless of whether or not the power supply by the power supply devices 50a and 50b is executed. For this reason, when the power feeding by the power feeding devices 50a and 50b is being performed, the power feeding is stopped, and when the power feeding is not being performed, the state is maintained. Therefore, since smart collation or immobilizer collation can be performed while power feeding is temporarily stopped, it is possible to prevent such collation from being unsatisfactory due to noise.

  In addition, since a stop command is transmitted to the power supply device 50b that needs to temporarily stop power supply, even if noise is generated, the power supply device 50 that does not affect the smart verification or the immobilizer verification in the host vehicle 20a. It is possible to prevent the power supply from being temporarily stopped. Furthermore, the time for temporarily stopping the power feeding of the power feeding devices 50a and 50b may be at least the time from when the start operation is performed until smart collation or immobilizer collation is established. For this reason, compared with the case where the stop signal Ss1 is transmitted with the operation of the door button 38 as a trigger, for example, the time for unlocking the door is unnecessary, so the time during which the power supply is stopped can be shortened.

As described above, according to the electronic key system of this embodiment, the following effects can be obtained.
(1) Since the stop signal Ss1 is transmitted to the power supply devices 50a and 50b before the smart verification or the immobilizer verification in the vehicle, the power supply by the power supply devices 50a and 50b is temporarily stopped based on the stop signal Ss1. In the meantime they can be matched. For this reason, communication failure due to noise generated from the power feeding devices 50a and 50b can be prevented.

  (2) Since the stop signal Ss1 is transmitted using the start operation as a trigger, the smart verification or immobilizer verification for starting the engine 25 is prevented from being unsatisfactory due to noise of the power feeding devices 50a and 50b. be able to.

  (3) Since the stop signal Ss1 of the infrared signal is transmitted from the vehicle-side key system 21, noise generated from the power feeding devices 50a and 50b does not affect the stop signal Ss1, and the noise prevents reception of the stop signal Ss1. This can be suppressed.

(Second Embodiment)
Next, with reference to FIGS. 4 to 6, a second embodiment of the electronic key system will be described focusing on differences from the first embodiment. The electronic key system according to the present embodiment has the same basic configuration as that of the first embodiment, and in the drawings, substantially the same elements as those of the first embodiment are denoted by the same reference numerals. A description will be omitted.

  As shown in FIG. 4, the electronic key 10 includes an LF receiver 15 having an RSSI (Received Signal Strength Indicator) 16 corresponding to a signal strength detector, and a UHF transmitter 17. The LF receiver 15 receives an LF band signal via the receiving antenna 12. The UHF transmitter 17 transmits a UHF band signal via the transmission antenna 13.

  The RSSI 16 detects the intensity of the received radio signal and outputs the detected value to the key control unit 11. The key control unit 11 determines a pattern of signal strength input from the RSSI 16. For example, “1” is set when the value is equal to or greater than a predetermined value set in advance, and “0” is set when the intensity of the received radio signal is less than the specified value. The combination of “1” and “0” Generate the pattern.

  The key control unit 11 compares the combination of “1” and “0” with a previously registered pattern. The key control unit 11 permits the door to be locked and unlocked and the engine 25 to be started when the received signal strength pattern input from the RSSI 16 is correct and the ID verification is established.

  Moreover, the key control part 11 judges that the noise which generate | occur | produces from the electric power feeder 50 was received, when the signal strength input from RSSI16 exceeds the threshold value larger than a regulation value. The threshold is set to a value larger than the strength of the radio signal output from the vehicle 20 at the time of smart verification.

In addition, the vehicle side key system 21 includes a stop command transmitter 60. The stop command transmitter 60 is, for example, a transmitter that transmits a UHF band stop command Ss3 using a radio signal.
The power feeding device 50 includes a receiver 61 that receives the stop command Ss3. The receiver 61 is a receiver that receives, for example, a UHF band stop signal Ss2.

  As shown in FIG. 5, the electronic key 10 triggers the reception of a signal whose signal strength exceeds the threshold value, and sends a UHF band stop signal Ss2 from the UHF transmission unit 17 to the host vehicle 20a corresponding to the electronic key 10. Send. The host vehicle 20a that has received the stop signal Ss2 transmits a stop command Ss3 from the stop command transmitter 60 to the power supply device 50a corresponding to the host vehicle 20a.

  The power supply apparatus 50a that has received the stop command Ss3 temporarily stops power supply when power supply is being performed. Further, the power supply device 50a transmits a stop command Ss10 to the power supply device 50b around the host vehicle 20a via the communication cable 56. At this time, as in the first embodiment, a stop command Ss10 is transmitted to the power feeding device 50 within a predetermined range centered on the host vehicle 20a. The power feeding device 50 that has received the stop command Ss10 from the power feeding device 50 of the host vehicle 20a temporarily stops power feeding when power feeding is being performed.

Next, the communication operation of the electronic key system and the power feeding devices 50a and 50b will be described with reference to FIG.
The electronic key 10 is activated when it detects a signal intensity exceeding a threshold value (step S11). Then, the electronic key 10 transmits a UHF band stop signal Ss2 from the UHF transmitter 17 to the host vehicle 20a (step S12). At this time, the electronic key 10 transmits a stop signal Ss2 including the electronic key ID 11b.

  When the verification ECU 22 receives the stop signal Ss2 via the vehicle receiver 28 of the host vehicle 20a, the verification ECU 22 verifies the electronic key ID 11b included in the stop signal Ss2. If the verification ECU 22 determines that the electronic key ID 11b is valid, the verification ECU 22 transmits a stop command Ss3 from the stop command transmitter 60 to the power supply device 50 corresponding to the host vehicle 20a (step S13).

  When the power supply device 50 corresponding to the host vehicle 20a receives the stop command Ss3 via the receiver 61, the power supply device 50 transmits a stop command Ss10 from the communication unit 54 to another power supply device 50 that is set in advance as a transmission destination. (Step S14). The stop command Ss10 is transmitted to the power supply device 50 as the transmission destination via the communication cable 56. Alternatively, the stop command Ss10 to which the identifier of the power supply device 50 that is the transmission source is assigned may be transmitted to an unspecified number of power supply devices 50. In this case, the power supply control unit 51 temporarily stops power supply based on the reception of the identifier of the power supply device 50 that receives the stop command Ss10.

  The power supply apparatus 50a that has received the stop command Ss3 from the host vehicle 20a temporarily stops the power supply when its own power supply is being executed (step S15). When the power feeding is not executed, the state is maintained. Further, the other power supply apparatus 50b that has received the stop command Ss10 from the power supply apparatus 50a temporarily stops the power supply when its own power supply is being executed (step S16).

  While the power supply from the power supply devices 50a and 50b is stopped, the verification ECU 22 executes smart verification or immobilizer verification with the electronic key 10 (step S17).

  In this way, the stop signal Ss2 can be transmitted from the electronic key 10 only when non-contact power feeding is performed around the host vehicle 20a. The stop signal Ss2 transmitted from the electronic key 10 is in the UHF band and is not affected by noise generated from the power supply devices 50a and 50b. Therefore, the power supply device 50a receives power by receiving the stop signal Ss2. It can be temporarily stopped.

  Further, when the electronic key 10 is present in the vicinity of the host vehicle 20a, the power supply of the surrounding power supply device 50b is temporarily stopped, so that the stop signal Ss2 is transmitted in a scene where it is not necessary to stop the power supply. Can be suppressed. In addition, if power supply to the surrounding power supply device 50b is temporarily stopped, smart communication for locking and unlocking the door can be established.

As described above, according to the electronic key system of this embodiment, the effect (1) can be obtained, and the following effects can be obtained.
(4) Since the electronic key 10 transmits the stop signal Ss2 when the intensity of the received radio signal exceeds the threshold value, it is assumed that there is a high possibility of communication failure due to noise generated from the power supply device 50. As long as the stop signal Ss2 is transmitted, the power supply by the surrounding power supply device 50b can be temporarily stopped.

  (5) Since the stop signal Ss2 in the UHF band is transmitted from the electronic key 10, the noise generated from the power feeding devices 50a and 50b does not affect the stop signal Ss2, and the noise prevents the stop signal Ss2 from being received. Can be suppressed.

(Other embodiments)
In addition, each said embodiment can also be implemented with the following forms.
In the first embodiment, the stop signal Ss1 is transmitted from the vehicle-side key system 21 of the vehicle 20 triggered by the start operation being performed. However, when the door button 38 is operated, the vehicle 20 The stop signal Ss1 may be transmitted from the vehicle side key system 21.

  In the first embodiment, the stop signal Ss1 of the infrared signal is transmitted from the vehicle 20, but the infrared transmission unit is provided in the electronic key 10, and the stop signal Ss1 is transmitted from the infrared transmission unit to the vehicle 20 or the power feeding device 50. You may send it. When the stop signal Ss <b> 1 is transmitted from the electronic key 10 to the vehicle 20, a stop command such as a UHF band or infrared rays is transmitted from the vehicle 20 to the power supply device 50.

  In the first embodiment, the infrared stop signal Ss1 is transmitted from the vehicle 20 on which the start operation has been performed to the power supply apparatus 50. In addition to this, the infrared transmission unit 23 of the host vehicle 20a transmits a stop signal Ss1 to the power feeding device 50a that feeds power to the host vehicle 20a and the other power feeding device 50b adjacent to the power feeding device 50a. Also good. For example, as shown in FIG. 7, a plurality of infrared transmitters 23 are provided at different positions in the host vehicle 20 a and transmit a stop signal Ss <b> 1 to the adjacent power feeding device 50 b.

  -As FIG. 8 shows, the own vehicle 20a by which start operation was performed may transmit the inter-vehicle stop signal Ss4 of an infrared signal with respect to the other vehicle 20b. At this time, the host vehicle 20a and the other vehicle 20b include an infrared receiver in addition to the vehicle-side key system 21 described above. The host vehicle 20a on which the start operation has been performed stops the power feeding of the power feeding device 50a to which the host vehicle 20a corresponds. The other vehicle 101 that has received the inter-vehicle stop signal Ss4 stops the power supply of the power supply device 50b that it corresponds to. At this time, the own vehicle 20a and the other vehicle 101 are provided with a transmitter that transmits a signal not affected by noise, such as a UHF band signal and an infrared signal, to the power supply device 50. A receiver capable of receiving a signal from the transmitter is provided. The vehicle 20 on which the start operation has been performed and the vehicle 20 that has received the inter-vehicle stop signal Ss4 temporarily supply power by transmitting a stop command Ss3 from the transmitter to the power supply device 50 corresponding to the vehicle 20 itself. Stop.

  In the second embodiment, the electronic key 10 transmits a stop signal Ss2 in the UHF band to the host vehicle 20a, and the host vehicle 20a transmits a stop command Ss3 to the power feeding device 50a corresponding to the host vehicle 20a. The device 50a transmits a stop command Ss10 to the other power supply device 50b. In addition to this, as shown in FIG. 9, a stop signal Ss2 may be transmitted from the electronic key 10 to another vehicle 20b equipped with the same vehicle-side key system 21 as the host vehicle 20a. And you may make it transmit stop command Ss3 with respect to the electric power feeder 50 from the own vehicle 20a and the other vehicle 20b which received stop signal Ss2.

  As shown in FIG. 10, in the second embodiment, when the stop signal Ss2 is transmitted from the electronic key 10 to the own vehicle 20a corresponding to the electronic key 10, the other vehicle around the own vehicle 20a. An inter-vehicle stop command Ss5 may be transmitted to 101. The inter-vehicle stop command Ss5 is an infrared signal or the like in addition to a UHF band signal. The own vehicle 20a and the other vehicle 20b include a transmitter capable of transmitting an inter-vehicle stop command Ss5 and a receiver capable of receiving the inter-vehicle stop command Ss5. The host vehicle 20a temporarily stops the power feeding of the power feeding device 50a corresponding to the host vehicle 20a. The other vehicle 20b that has received the inter-vehicle stop command Ss5 temporarily stops the power supply of the power supply device 50b corresponding to itself.

  In the second embodiment, the UHF band stop signal Ss <b> 2 is transmitted to the power supply device 50 when triggered by the electronic key 10 receiving a signal whose intensity exceeds the threshold. As another aspect, the UHF band stop signal Ss <b> 2 may be transmitted to the power supply device 50 with the key operation unit 19 a of the electronic key 10 being operated as a trigger. In this aspect, transmission of the stop signal Ss2 in a scene where it is not necessary to stop power feeding can be suppressed.

  The stop signal Ss <b> 2 may be transmitted to the power supply device 50 with the electronic key 10 receiving a signal transmitted from the host vehicle 20 a corresponding to the electronic key 10 as a trigger. In this case, the key control unit 11 of the electronic key 10 corresponds to a determination unit that determines whether or not the signal is transmitted from the host vehicle 20a. For example, the propagation of noise generated from the power supply device 50 may be hindered by an obstacle or the like, and vehicle code verification may be accidentally established. In this aspect, when the electronic key 10 is outside the signal transmission range centered on the host vehicle 20a, the stop signal Ss2 is not transmitted. For this reason, since the stop signal Ss2 is transmitted only in a range close to the host vehicle 20a, transmission of the stop signal Ss2 in a scene where it is not necessary to stop power feeding can be suppressed.

  In the first embodiment, the stop signal Ss1 of the infrared signal is transmitted, but the stop signal Ss1 of the UHF band may be transmitted, or the stop signal Ss1 of the sound wave signal including the ultrasonic wave may be transmitted. In the second embodiment, the UHF band stop signal Ss2 is transmitted. However, an infrared signal stop signal Ss2 may be transmitted, or a sound wave signal stop signal Ss2 including ultrasonic waves may be transmitted. That is, the stop signals Ss1 and Ss2 may be signals in a frequency band that does not interfere with noise generated from the power feeding device 50.

The electronic key 10 or the vehicle 20 may transmit a power supply restart signal to the power supply device 50 when smart verification or immobilizer verification is established.
In each of the above embodiments, the stop signals Ss1 and Ss2 are transmitted before the smart collation or immobilizer collation is started, but the stop signals Ss1 and Ss2 are transmitted while the smart collation or immobilizer collation is being executed. May be. For example, when the stop signals Ss1 and Ss2 are transmitted during the verification, for example, when the vehicle code verification, challenge response authentication, and electronic key verification are established halfway, or when the verification is being retried, etc. A case where power supply is started by 50 is assumed. Even in such a case, the power supply can be temporarily stopped by transmitting the stop signals Ss1 and Ss2.

  In each of the above embodiments, the vehicle 20 equipped with the vehicle side key system 21 is exemplified as a hybrid vehicle. However, the vehicle 20 may be an electric vehicle including a secondary battery and a motor.

  DESCRIPTION OF SYMBOLS 10 ... Electronic key, 11 ... Key control part, 11a ... Memory, 12 ... Reception antenna, 13 ... Transmission antenna, 14 ... Communication antenna, 15 ... LF reception part, 16 ... RSSI circuit, 17 ... UHF transmission part, 19 ... Key Operation detection unit, 19a ... key operation unit, 20 ... vehicle, 20a ... own vehicle, 20b ... other vehicle, 21 ... vehicle side key system, 22 ... verification ECU, 22a ... memory, 23 ... infrared transmission unit, 25 ... engine, DESCRIPTION OF SYMBOLS 26 ... Outside transmitter, 27 ... In-vehicle transmitter, 28 ... Vehicle receiver, 30 ... Start switch, 31 ... Operation detection part, 32 ... Communication antenna, 35 ... Body ECU as in-vehicle apparatus, 36 ... Hybrid ECU, 37 ... Door lock mechanism as an in-vehicle device, 38 ... door button, 40 ... power receiving unit, 41 ... battery ECU, 42 ... secondary battery, 43 ... motor, 50, 50a, 5 b: Power feeding device, 51 ... Power feeding control unit, 52 ... Power transmission unit, 53 ... Infrared receiving unit, 54 ... Communication unit, 55 ... Stand, 56 ... Communication cable, 60 ... Stop command transmitter, 61 ... Receiver, 101 ... Other vehicles.

Claims (8)

In the electronic key system that permits control of the in-vehicle device of the own vehicle on the condition that ID verification by wireless communication is established between the electronic key and the own vehicle corresponding to the electronic key,
Before or during ID verification, power supply is temporarily stopped for at least one of a power supply apparatus that performs non-contact power supply to the host vehicle and a power supply apparatus that performs non-contact power supply to other vehicles around the host vehicle. An electronic key system characterized by transmitting a stop signal. The electronic key system according to claim 1, wherein the stop signal is transmitted when the start operation is detected by a start operation detecting unit that detects a start operation for starting the power source of the host vehicle. The own vehicle or the electronic key includes a signal strength detection unit that detects the strength of the received signal, and transmits the stop signal when the signal strength detection unit receives a signal exceeding a preset threshold. The electronic key system according to claim 1. The electronic key system according to claim 1, wherein the stop signal is transmitted when the key operation is detected by a key operation detection unit that detects a preset key operation on the electronic key. The electronic key includes a determination unit that determines whether the received signal is a signal transmitted from the host vehicle,
The electronic key system according to claim 1, wherein the stop signal is transmitted when the determination unit determines that the signal received by the electronic key is a signal transmitted from the host vehicle. The electronic key transmits the stop signal to the host vehicle,
The host vehicle that has received the stop signal from the electronic key supplies the stop signal to at least one of a power feeding device that feeds power to the host vehicle and a power feeding device that feeds power to other vehicles around the host vehicle. The electronic key system according to claim 1, wherein the electronic key system is transmitted. The stop signal that is an infrared signal for at least one of the infrared receiving unit of the power supply device that supplies power to the host vehicle or the electronic device that supplies power to the other vehicle. The electronic key system according to any one of claims 1 to 6, further comprising an infrared transmission unit configured to transmit. The said own vehicle or the said electronic key is provided with the transmission part which transmits the said stop signal of a UHF band with respect to at least one among the electric power feeder which supplies electric power to the said own vehicle, and the electric power feeder which supplies electric power to another vehicle. The electronic key system according to any one of 1 to 6.

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