JP2016026456A - Interphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interphone system that can achieve vehicle information with cost-up being suppressed while staying in a building.SOLUTION: An interphone system has an interphone device 2 which is installed in a dwelling house 100 and communicates with a slave telephone unit 4, and a charging control device 1 for controlling charging to a power storage unit 31 of an electric vehicle 3. The charging control device 1 has a first communication unit 12 for achieving vehicle information from the electric vehicle 3, and transmitting the achieved vehicle information to the interphone device 2. The interphone device 2 has a second communication unit 24 for receiving the vehicle information transmitted from the charging control device 1, a display unit 25 and a first controller 21 for displaying the vehicle information received by the second communication unit 24 on the display unit 25. The first communication unit 12 achieves maintenance information of the electric vehicle 3 as vehicle information. The first controller 21 displays the maintenance information received by the second communication unit 24 on the display unit 25.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an intercom system.

  2. Description of the Related Art Conventionally, a security system using an information acquisition device (for example, a sensor, a camera, a radar, etc.) mounted in advance in a vehicle has been provided (see, for example, Patent Document 1). This security system performs power line communication with a vehicle-side communication control device provided on the vehicle side, and acquires a home-side communication control device that acquires information from the information-acquisition device. A home security terminal connected via a LAN.

  In this security system, an information display unit is provided on the home security terminal, and if an illegal intrusion into the premises of the house or a vehicle theft is detected by the information from the information acquisition device, the security company is notified. At the same time, an abnormality can be displayed on the information display unit to notify the user at home.

JP 2007-72686 A (paragraph [0014] -paragraph [0030] and FIGS. 1 to 3)

  In the security system shown in the above-mentioned Patent Document 1, although it is possible to know the state of the vehicle and the state of being outside the house while in the house, it is necessary to install a dedicated device such as a home-side communication control device or a home security terminal. Therefore, the cost was increased.

  This invention is made | formed in view of the said subject, and it aims at providing the intercom system which can acquire vehicle information, being in a building, suppressing a cost increase.

  An intercom system of the present invention includes an intercom device that performs a call with a telephone handset, and a charging control device that controls charging of a power storage unit of the electric vehicle, and the charging control device is connected to the electric vehicle. A vehicle information acquisition unit that acquires vehicle information; and a first communication unit that transmits the acquired vehicle information to the intercom device, wherein the intercom device receives the vehicle information transmitted from the charge control device. A second control unit; a display unit; and a first control unit that displays the vehicle information received by the second communication unit on the display unit, wherein the vehicle information acquisition unit stores maintenance information of the electric vehicle. Obtained as the vehicle information, the first control unit displays the maintenance information received by the second communication unit on the display unit.

  The intercom system of the present invention can acquire vehicle information while staying in a building while suppressing an increase in cost.

1 is a system configuration diagram illustrating an example of an intercom system according to a first embodiment. An example of the charge control apparatus which comprises the same is shown, (a) is a front view, (b) is a side view. It is an external appearance perspective view which shows the other example of the charge control apparatus which comprises the same as the above. It is a schematic system diagram using the charge control device which constitutes the same. It is a sequence diagram explaining operation | movement same as the above. It is a sequence diagram explaining another operation | movement same as the above. It is a sequence diagram explaining another operation | movement same as the above. It is a sequence diagram explaining another operation | movement further same as the above. It is a sequence diagram explaining another operation | movement same as the above. It is a system block diagram which shows an example of the intercom system of Embodiment 2.

  Hereinafter, an embodiment of an intercom system will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a system configuration diagram illustrating an example of an intercom system according to the present embodiment. This intercom system is applied to a detached house 100, and includes an intercom device 2 that performs an extension call with a handset 4 installed outside the house (for example, near the entrance), and a power storage unit of the electric vehicle 3. And a charging control device 1 that controls charging of the battery 31.

  The electric vehicle 3 includes, for example, an electric vehicle (EV) having only an electric motor as a power source, a hybrid vehicle (HEV) or a plug-in hybrid vehicle (PHEV) that uses an engine and an electric motor as a power source. The electric vehicle 3 includes a power storage unit 31 made of, for example, a lithium ion secondary battery. As a circuit for charging the power storage unit 31, a control unit 32, a charge processing unit 33, a vehicle information storage unit 34, and a third And a communication unit 36. The electric vehicle 3 includes an operation unit 35, a video processing unit 37, a display unit 38, a sensor unit 39, and a camera unit 40.

  The control part 32 consists of microcomputers, for example, and controls the charging operation in the electric vehicle 3. The charging processing unit 33 receives power supply via the charging control device 1 and charges the power storage unit 31, and an electric motor (not shown) is driven by the power stored in the power storage unit 31. In the vehicle information storage unit 34 of the electric vehicle 3, vehicle information (for example, a chassis number) used for authentication of the electric vehicle 3 is registered in advance. The third communication unit 36 includes, for example, a specific low power wireless module, and performs wireless communication with the charging control device 1.

  The sensor unit 39 includes a raindrop sensor and a security sensor mounted on the electric vehicle 3. The raindrop sensor detects the amount of raindrops, and the security sensor detects whether the electric vehicle 3 is abnormal. The video processing unit 37 takes in video data captured by the camera unit 40 mounted on the electric vehicle 3 and outputs it to the control unit 32. The control unit 32 uses the video captured by the camera unit 40 as an operation of the operation unit 35. In response, the image is displayed on the display unit 38.

  In this embodiment, charging power is supplied to the electric vehicle 3 from the distribution board 5 provided in the house. The distribution board 5 is supplied with AC output from an AC power supply 9 provided outside. And the alternating current output which converted the direct current output from the solar cell 6 or the storage battery 7 with the power conditioner 8 is supplied (refer FIG. 1).

  The intercom apparatus 2 includes a first control unit 21, a call processing unit 22, a video processing unit 23, a second communication unit 24, a display unit 25, an operation unit 26, an authentication processing unit 27, and a video storage unit. 28 as a main configuration.

  The 1st control part 21 consists of microcomputers, for example, and performs the overall control of the intercom apparatus 2. FIG.

  The call processing unit 22 (calling means) includes a speaker 22a and a microphone 22b, and performs an extension call with the telephone handset 4.

  The video processing unit 23 controls display on the display unit 25 including a liquid crystal display based on the video data input from the first control unit 21. In the present embodiment, video data captured by the camera unit 40 mounted on the electric vehicle 3 is transmitted to the intercom device 2, and the video processing unit 23 displays a video captured by the camera unit 40 based on the video data. This is displayed on the unit 25. When the handset 4 is equipped with a camera, video data captured by the camera of the handset 4 is transmitted to the intercom device 2 when calling from the handset 4, and the video processing unit 23 An image captured by the camera based on the image data is displayed on the display unit 25.

  The operation unit 26 includes one or more operation buttons (not shown) provided on the housing of the intercom device 2. When the operation unit 26 is operated by a resident, a signal corresponding to the operation is transmitted from the operation unit 26. It is output to the first control unit 21. In addition, when the display unit 25 includes a liquid crystal display with a touch sensor, the operation unit 26 may be configured with the touch sensor of the display unit 25.

  The second communication unit 24 (communication means) is composed of, for example, a specific low-power wireless module, and performs wireless communication with the charging control device 1. The communication method between the second communication unit 24 and the charging control device 1 is not limited to wireless communication, but wired communication (for example, communication through a dedicated communication line, power line carrier communication through a power line, etc.) )

  In the authentication processing unit 27, vehicle information (for example, the chassis number of the electric vehicle 3) of the electric vehicle 3 that is permitted to be charged is registered in advance. When the vehicle information of the electric vehicle 3 connected to the charging control device 1 is sent from the charging control device 1, the authentication processing unit 27 determines whether or not the vehicle information matches the vehicle information registered in advance. By determining, the electric vehicle 3 is authenticated.

  The video storage unit 28 stores video data captured by the camera unit 40 mounted on the electric vehicle 3, or video data captured by the camera when the telephone set 4 includes a camera. .

  Further, in the present embodiment, a notification unit 29 is provided that performs voice notification and visual notification (for example, characters, graphic symbols, video, light emission, etc.) to the residents of the house 100. The notification unit 29 is a telephone call. The processing unit 22 includes a speaker 22a and a display unit 25.

  The charging control device 1 switches between a state in which electric power is supplied from the power source (the AC power source 9 or the solar battery 6 and the storage battery 7) to the electric vehicle 3 and a state in which the electric power supply to the electric vehicle 3 is cut off. . The charging control apparatus 1 includes a second control unit 11, a first communication unit 12, a display unit 13, a relay 14, and an operation unit 15 as main components.

  The 2nd control part 11 consists of microcomputers, for example, and performs the overall control of the charging control apparatus 1. FIG.

  The first communication unit 12 includes, for example, a specific low power wireless module, and performs wireless communication between the intercom device 2 and the electric vehicle 3. Here, the first communication unit 12 has a function of acquiring the vehicle information sent from the electric vehicle 3 and transmitting the acquired vehicle information to the intercom device 2. The communication unit 12 constitutes a vehicle information acquisition unit and a first communication unit.

  The display unit 13 is for notifying the operation state of the charging control device 1 and is configured of a plurality of light emitting diodes LD1 to LD3 described later in the present embodiment.

  The relay 14 has a contact point connected between the power cable CB 1 from the distribution board 5 installed in the house 100 and the charging cable CB 2 connected to the electric vehicle 3, and is controlled by the second control unit 11. The contact is switched on / off.

  The operation unit 15 includes a charge start button for starting charging of the electric vehicle 3, a charge stop button for forcibly stopping charging of the electric vehicle 3, and a signal corresponding to the operation when operated by a resident. Output to the second control unit 11.

  FIG. 2 is a front view and a side view showing an example of the charge control device 1. The charge control device 1 includes a device body 70 made of synthetic resin formed in a vertically long rectangular parallelepiped shape and a charge derived from the device body 70. A charging plug 60 provided at the tip of the cable CB2 and detachably connected to the charging connector 41 of the electric vehicle 3 is used by being attached to a wall or the like. Openings are provided at the corners of the front surface and the lower surface of the apparatus main body 70, and a storage portion 71 for storing a part of the charging plug 60 at the time of non-charging is provided so as to face the opening. In addition, on the front surface of the apparatus main body 70, a plurality of (three in FIG. 2A) light emitting diodes LD1 to LD3 constituting the display unit 13 are arranged in the vertical direction.

  On the other hand, the charging plug 60 includes a cylindrical charging connection portion 61 that is plugged and connected to the charging connector 41 of the electric vehicle 3 at the distal end, and a locking claw 62 that engages with a recess provided in the charging connector 41. It has. Further, a handle 63 is provided on the rear side of the charging plug 60 for gripping with a hand. Then, by holding the lock claw 62 of the charging plug 60 on the plug holding body 72 of the apparatus main body 70, the charging plug 60 is held on the apparatus main body 70 as shown in FIGS. 2 (a) and 2 (b). The In addition, CB1 in FIG. 2A is a power cable connected to the distribution board 5.

  The charging control device 1 shown in FIGS. 2 (a) and 2 (b) is a wall-mounted type, but may be a portable type as shown in FIGS. The charging control device 1 includes a housing 80 including a rectangular parallelepiped body 81 whose one surface is open, and a cover 82 attached to the body 81 so as to close the opening of the body 81. A support portion 83 that protrudes outward from the body 81 is provided at one end side in the longitudinal direction of the cover 82, and a hooking hole 83 a is provided in the support portion 83. Therefore, the housing 80 is supported in a state of being hung on the wall surface or the like by hooking a pin provided on the wall or the like to the hooking hole 83a. Further, from the side wall on one end side in the longitudinal direction of the body 81 (left side in FIG. 4), a power cable CB1 provided with a power plug 84 connected to the power outlet 20 is led out to the outside of the housing 80. A charging cable CB2 provided with a charging plug 85 connected to the electric vehicle 3 at the tip is led out of the housing 80 from the side wall on the other end side in the longitudinal direction of 81 (right side in FIG. 4).

  Next, each operation | movement of the intercom system of this embodiment is demonstrated sequentially, referring FIGS.

  FIG. 5 is a sequence diagram when vehicle information (for example, maintenance information) of the electric vehicle 3 to which the charging control device 1 is connected is displayed on the display unit 25 of the intercom device 2. After connecting the charging plug 60 removed from the device main body 70 of the charging control device 1 to the charging connector 41 of the electric vehicle 3, when the charging start button of the operation unit 15 is pressed (step S <b> 1), the first communication unit is operated from the operation unit 15. A plug connection signal is output to 12 (step S2). The first communication unit 12 transmits a plug connection signal to the third communication unit 36 of the electric vehicle 3 (step S3), and the third communication unit 36 outputs the received plug connection signal to the control unit 32 (step S4). ). Upon receiving the plug connection signal, the control unit 32 requests vehicle information from the vehicle information storage unit 34 (step S5), and the vehicle information storage unit 34 outputs the vehicle information to the control unit 32 (step S6).

  The control unit 32 that has received the vehicle information outputs the vehicle information to the third communication unit 36 and causes the third communication unit 36 to transmit the vehicle information to the first communication unit 12 of the charge control device 1 (step S7). The first communication unit 12 outputs the received vehicle information to the second control unit 11 (step S8), and the second control unit 11 transmits the vehicle information from the first communication unit 12 to the second communication unit 24 of the intercom device 2. (Step S9). The second communication unit 24 outputs the received vehicle information to the first control unit 21 (step S10), and the first control unit 21 outputs the vehicle information to the video processing unit 23 (step S11) and displays it on the display unit 25. Vehicle information is displayed (step S12). Here, the maintenance information includes oil change and vehicle inspection time, mileage, etc., and the oil change and vehicle inspection time is displayed on the display unit 25 to inform the resident of the oil change and vehicle inspection time. Can be performed without forgetting oil change and vehicle inspection.

  In step S1, the charging is started by pressing the charging start button of the operation unit 15 after connecting the charging plug 60 of the charging control device 1 to the charging connector 41 of the electric vehicle 3. However, charging may be started by connecting the charging plug 60 to the charging connector 41.

  FIG. 6 is a sequence diagram when an image captured by the camera unit 40 mounted on the electric vehicle 3 is displayed on the display unit 25 of the intercom device 2. Although illustration of the video processing unit 23 is omitted in FIG. 6, the video data output from the first control unit 21 is actually displayed on the display unit 25 via the video processing unit 23.

  When the abnormality of the electric vehicle 3 is detected by the sensor unit 39 provided in the electric vehicle 3 (step S21), the sensor unit 39 outputs an abnormality detection signal to the control unit 32 (step S22). The control unit 32 activates the camera unit 40 via the video processing unit 37 (step S23), and takes in video data captured by the camera unit 40 (step S24). Further, the control unit 32 outputs the captured video data to the third communication unit 36, and transmits the video data from the third communication unit 36 to the first communication unit 12 of the charging control device 1 (step S25).

  The first communication unit 12 outputs the received video data to the second control unit 11 (step S26), and the second control unit 11 transmits the video data from the first communication unit 12 to the second communication unit 24 of the intercom device 2. (Step S27). The second communication unit 24 outputs the received video data to the first control unit 21 (step S28), and the first control unit 21 outputs the video data to the video processing unit 23 (step S29) and displays it on the display unit 25. The video captured by the camera unit 40 is displayed (step S30), and the video data is stored in the video storage unit 28 (step S31).

  When the operation from step S24 to S31 is repeated and a certain time has elapsed (step S32), the control unit 32 of the electric vehicle 3 stops the camera unit 40 via the video processing unit 37 (step S33). The video end signal is transmitted from the third communication unit 36 to the first communication unit 12 of the charge control device 1 (step S34). The first communication unit 12 outputs the received video end signal to the second control unit 11 (step S35), and the second control unit 11 transmits the video end signal from the first communication unit 12 to the second communication unit 24 of the interphone device 2. Is transmitted (step S36). The second communication unit 24 outputs the received video end signal to the first control unit 21 (step S37), and the first control unit 21 outputs the video end signal to the video processing unit 23 to display on the display unit 25. While stopping (step S38), the preservation | save to the image | video memory | storage part 28 is stopped (step S39).

  In this way, by displaying the video imaged by the camera unit 40 mounted on the electric vehicle 3 on the display unit 25 of the intercom device 2, it is possible to check the state of the outside of the house while staying in the house. This is advantageous in that it prevents theft and theft, and there is no need to provide a dedicated camera for photographing the situation outside the house. In addition, by storing the video data captured by the camera unit 40 in the video storage unit 28 of the interphone device 2, the video captured by the camera unit 40 can be checked later.

  FIG. 7 is a sequence diagram when the raining state is notified from the notification unit 29 of the intercom device 2 based on the detection result of the raindrop sensor constituting the sensor unit 39 of the electric vehicle 3. Although the call processing unit 22 and the video processing unit 23 are not shown in FIG. 7, the audio signal output from the first control unit 21 is actually output from the speaker 22 a via the call processing unit 22. The display data output from the first control unit 21 is displayed on the display unit 25 via the video processing unit 23.

  When a raindrop is detected by the raindrop sensor (step S41), the raindrop sensor outputs a raindrop detection signal to the control unit 32 (step S42). The control unit 32 transmits the received raindrop detection signal from the third communication unit 36 to the first communication unit 12 of the charging control device 1 (step S43), and the first communication unit 12 transmits the received raindrop detection signal to the second control unit. 11 (step S44).

  The second control unit 11 causes the first communication unit 12 to transmit a raindrop detection signal to the second communication unit 24 of the intercom device 2 (step S45), and the second communication unit 24 outputs the raindrop detection signal to the first control unit 21. (Step S46). The first control unit 21 controls the call processing unit 22 and the video processing unit 23 based on the received raindrop detection signal (step S47), and notifies the start of rain from the speaker 22a and the display unit 25 (step S48). ). Note that the rain state to be notified from the notification unit 29 is not limited to the fact that it has started to rain. For example, precipitation and time of precipitation may be notified, and the rain state can be known while staying in the house by this configuration. be able to.

  FIG. 8 is a sequence diagram when notifying the abnormality of the electric vehicle 3 from the notification unit 29 of the intercom device 2 based on the detection result of the security sensor constituting the sensor unit 39 of the electric vehicle 3. Although illustration of the call processing unit 22 and the video processing unit 23 is omitted in FIG. 8, the audio signal output from the first control unit 21 is actually output from the speaker 22a via the call processing unit 22. The display data output from the first control unit 21 is displayed on the display unit 25 via the video processing unit 23.

  When an abnormality of the electric vehicle 3 is detected by the security sensor (step S51), the security sensor outputs an abnormality detection signal to the control unit 32 (step S52). The control unit 32 causes the received abnormality detection signal to be transmitted from the third communication unit 36 to the first communication unit 12 of the charging control device 1 (step S53), and the first communication unit 12 transmits the received abnormality detection signal to the second control unit. 11 (step S54).

  The second control unit 11 causes the first communication unit 12 to transmit an abnormality detection signal to the second communication unit 24 of the intercom device 2 (step S55), and the second communication unit 24 outputs the abnormality detection signal to the first control unit 21. (Step S56). The first control unit 21 controls the call processing unit 22 and the video processing unit 23 based on the received abnormality detection signal (step S57), and notifies the abnormality of the electric vehicle 3 from the speaker 22a and the display unit 25 (step S58). . As a result, it is possible to know the abnormality of the electric vehicle 3 while in the house.

  FIG. 9 is a sequence diagram of an authentication operation performed when charging of the electric vehicle 3 is started. After connecting the charging plug 60 removed from the device main body 70 of the charging control device 1 to the charging connector 41 of the electric vehicle 3, when the charging start button of the operation unit 15 is pressed (step S61), the second control unit is operated from the operation unit 15. 11, a charge start request signal is output (step S62). At this time, the relay 14 is in an open state, and the electric vehicle 3 is not supplied with electric power. When receiving the charge start request signal, the second control unit 11 causes the first communication unit 12 to transmit a vehicle information request signal to the third communication unit 36 of the electric vehicle 3 (step S63), and the third communication unit 36 has received it. A vehicle information request signal is output to the control part 32 (step S64). Upon receiving the vehicle information request signal, the control unit 32 requests vehicle information from the vehicle information storage unit 34 (step S65), and the vehicle information storage unit 34 outputs the vehicle information to the control unit 32 (step S66).

  The control unit 32 that has received the vehicle information outputs the vehicle information to the third communication unit 36 and causes the third communication unit 36 to transmit the vehicle information to the first communication unit 12 of the charge control device 1 (step S67). The 1st communication part 12 outputs the received vehicle information to the 2nd control part 11 (step S68), and the 2nd control part 11 sends the 2nd communication part 24 of the intercom apparatus 2 from the 1st communication part 12 to the 2nd communication part 24 of the electric vehicle 3. An authentication request and vehicle information are transmitted (step S69). The second communication unit 24 outputs the received authentication request and vehicle information to the first control unit 21 (step S70), and the first control unit 21 outputs the authentication request and vehicle information to the authentication processing unit 27 to perform authentication. (Step S71).

  The authentication processing unit 27 performs authentication by comparing the vehicle information registered in advance with the vehicle information to be authenticated input from the first control unit 21, and outputs the authentication result to the first control unit 21. (Step S72). Here, if the vehicle information to be authenticated is registered in advance (authentication is established), the first control unit 21 sends a signal permitting charging of the electric vehicle 3 from the second communication unit 24 to the first of the charging control device 1. 1 is transmitted to the communication unit 12 (step S73). The first communication unit 12 outputs the received permission signal to the second control unit 11 (step S74), and the second control unit 11 closes the relay 14 to start charging the electric vehicle 3 (step S75, S76).

  As a result of authentication by the authentication processing unit 27, if the vehicle information to be authenticated is not registered (authentication is not established), the first control unit 21 does not permit charging of the electric vehicle 3, and thus vehicle information is not registered. Electric power is not supplied to the electric vehicle 3. As described above, since the authentication operation is performed when charging the electric vehicle 3 is started, the electric vehicle 3 that is not authenticated by the authentication processing unit 27 is not charged. It is possible to prevent the vehicle 3 from being connected without permission and being stolen.

  Thus, according to the present embodiment, since the intercom device 2 installed in the home is provided with the notification unit 29 that notifies the vehicle information, the resident knows the vehicle information while staying in the home without going to the charging place. In addition, since the notification unit 29 is provided in the intercom device 2, it is not necessary to install a dedicated device as in the conventional example, and an increase in cost can be suppressed.

(Embodiment 2)
A second embodiment of the intercom system will be described with reference to FIG. In the first embodiment described above, the vehicle information of the electric vehicle 3 is transmitted by wireless communication between the first communication unit 12 of the charging control device 1 and the third communication unit 36 of the electric vehicle 3. However, it is different in that vehicle information of the electric vehicle 3 is transmitted to the charging control device 1 via the communication line L1 provided in the charging cable CB2. In addition, about another structure, it is the same as that of Embodiment 1, the same code | symbol is attached | subjected to the same component and description is abbreviate | omitted.

  The intercom system of the present embodiment includes a charge control device 1 and an interphone device 2.

  Here, the electric vehicle 3 includes a power storage unit 31 made of, for example, a lithium ion secondary battery. As a circuit for charging the power storage unit 31, a control unit 32, a charge processing unit 33, a vehicle information storage unit 34, and the like. The third communication unit 36 and the CPLT communication unit 42 are provided.

  The CPLT communication unit 42 is connected to the CPLT communication unit 16 of the charging control apparatus 1 via the communication line L1 provided in the charging cable CB2, and a pilot signal (notifying the operation state with the CPLT communication unit 16) ( (CPLT signal defined by SAE (American Automotive Engineering Association) standard). In the present embodiment, vehicle information is acquired from the electric vehicle 3 using the communication line L1. Here, in the present embodiment, the vehicle information acquisition unit is configured by the CPLT communication unit 16.

  Thus, according to the present embodiment, since the vehicle information of the electric vehicle 3 is acquired using the communication line L1 of the charging cable CB2 that supplies electric power to the power storage unit 31 of the electric vehicle 3, the vehicle information is There is no need to provide a separate communication line for acquisition, and there is no need to perform wireless communication.

  In addition to the communication line L1, a dedicated line for vehicle information transmission may be separately provided in the charging cable. In the first and second embodiments described above, the intercom system applied to a detached house has been described. However, the interphone system described in the first and second embodiments described above may be applied to a building such as an apartment house or a business office. Needless to say, it is good.

DESCRIPTION OF SYMBOLS 1 Charge control apparatus 2 Intercom apparatus 3 Electric vehicle 4 Telephone handset 12 1st communication part (1st communication part, vehicle information acquisition part)
21 First control unit 24 Second communication unit 29 Notification unit 31 Power storage unit 100 Housing (building)

Claims (1)

An intercom device that performs a call with a telephone handset, and a charge control device that controls charging of the power storage unit of the electric vehicle,
The charging control device includes a vehicle information acquisition unit that acquires vehicle information from the electric vehicle, and a first communication unit that transmits the acquired vehicle information to the intercom device.
The intercom apparatus has a second communication unit that receives the vehicle information transmitted from the charge control device, a display unit, and a first control that causes the display unit to display the vehicle information received by the second communication unit. With
The vehicle information acquisition unit acquires maintenance information of the electric vehicle as the vehicle information,
The intercom system, wherein the first control unit displays the maintenance information received by the second communication unit on the display unit.

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