JP2012174661A - Connector device and power line communication unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector device and a power line communication unit that allow downsizing of a circuit board, in which a circuit related to power line communication is configured, in a vehicle equipped with a power line communication function.SOLUTION: A coil for noise reduction is provided on a connector device 3. Two AC lines 11a, 12a for supplying electric power that pass through a cylindrical part 32 of the connector device 3 and extend from the end face thereof are wound around toroidal cores 17a, and the two toroidal cores 17a are disposed on the outer circumference of the cylindrical part 32. The toroidal cores 17a are externally fit in the cylindrical part 32, and a groove 32a for housing a wound part of the AC lines 11a, 12a for supplying electric power that are wound around the toroidal cores 17a is formed on the cylindrical part 32. In addition, two through holes 32b are formed on the circumferential wall of the cylindrical part 32, and AC lines 11b, 12b for power line communication that are connected with AC lines 11, 12 inside the cylindrical part 32 are passed through the through holes 32b so as to extend inside and outside of the cylindrical part 32.

Description

  The present invention is provided in a vehicle such as an electric vehicle or a plug-in hybrid vehicle, and is connected to a connector device for connecting a charging cable for supplying power from an external power supply device, and power is supplied through the charging cable connected to the connector device. The present invention relates to a power line communication device that performs power line communication with a device.

  2. Description of the Related Art In recent years, electric vehicles and hybrid vehicles that are equipped with devices such as a motor and a battery and run by driving the motor with electric power stored in the battery have begun to spread. An electric vehicle needs to be charged from an external power supply device to a battery, and even a hybrid vehicle includes a plug-in hybrid vehicle that can charge the battery from the external power supply device. In vehicles that charge the battery from the outside, connect the plug of the charging cable connected to the external power feeding device to the connector device of the power feeding port provided in the vehicle, and connect the charging cable from the power feeding device to the battery of the vehicle. Power is supplied through the battery, and the battery is charged.

  In Patent Document 1, the DC power receiving unit and the AC power receiving unit that are partitioned from each other are arranged in a single structure power receiving connector, and the first cap that covers the entire open end face of the power receiving connector so as to be openable and closable. And a second cap that allows a through hole opened at a position corresponding to the AC power receiving unit to be closed, and the AC power receiving unit and the DC power receiving unit are integrated into an integrated structure. An electric vehicle charging connector has been proposed.

  On the other hand, when charging the battery of the vehicle from the power supply device, a communication function for transmitting and receiving information for charge control and information for managing charge amount or charge between the vehicle and the power supply device Is required.

  In Patent Document 2, a plurality of electric vehicles and a supply management device perform power line communication, and AC power can be supplied from a plurality of electric vehicles configured to be able to supply AC power to a common power consumption unit. The proposed power system has been proposed. In this power system, a plurality of vehicles that have received a supply start instruction through power line communication transmit identification IDs (IDentifiers) to other vehicles, determine that any vehicle is the master, and notify the other vehicles of the master. Send. The master vehicle generates an AC voltage according to its own cycle, the other vehicles generate an AC voltage synchronized with the master vehicle, and a plurality of vehicles start supplying power to the power load in cooperation with each other.

Japanese Patent Laid-Open No. 7-192826 JP 2008-035665 A

  However, as in the power system described in Patent Document 2, in order for a vehicle and an external device to perform power line communication, such as a transformer for superimposing a signal on the power line and extracting a signal superimposed on the power line It is necessary to mount a power line communication device (hereinafter referred to as a PLC (Power Line Communication) in-vehicle device) having components mounted on a circuit board on a vehicle. Since parts such as a transformer have a certain limit in reducing the size, the PLC onboard device (the circuit board) tends to increase in size. Moreover, in order to perform power line communication with high accuracy, it is important to reduce noise on the power line and increase noise resistance of the PLC on-vehicle device. For this reason, it is preferable to arrange a circuit element such as a coil for noise reduction in the power line. However, mounting such a circuit element increases the size of the PLC onboard unit or its peripheral circuit (the circuit board). There was a problem. In vehicles such as electric vehicles, a large number of electronic devices are mounted, and the space for disposing devices in the vehicle is limited. Therefore, it is desired to reduce the size of a circuit board that constitutes a circuit related to power line communication.

  The present invention has been made in view of such circumstances, and an object thereof is to enable downsizing of a circuit board in which a circuit related to power line communication is configured in a vehicle having a power line communication function. The present invention provides a connector device and a power line communication device.

  A connector device according to the present invention includes a housing portion that houses a plurality of connection terminals and a plurality of wires that include two power supply lines and are connected to the connection terminals. Provided with a cylindrical portion through which the plurality of wires are inserted, and two annular magnetic bodies disposed on the outer periphery of the cylindrical portion, and the power supply line extending from the cylindrical portion is the annular Each of them is wound around a magnetic material.

  In the connector device according to the present invention, the annular magnetic body is fitted on the cylindrical portion, and the cylindrical portion is provided with the power supply line wound around the annular magnetic body. A groove for accommodating the wound portion is formed.

  Further, the power line communication device according to the present invention is connected to the above-described connector device, two communication lines connected to the power supply line in the tubular portion, and the two communication lines, An electromagnetic induction type signal converter that superimposes a signal on the power supply line and extracts a signal superimposed on the power supply line; and a power line communication unit that performs power line communication via the signal converter. Features.

  Moreover, the power line communication apparatus according to the present invention is characterized in that a groove is formed in the tubular portion so as to communicate with the distal end portion of the tubular portion and to pass the two communication lines.

  Moreover, the power line communication apparatus according to the present invention is characterized in that a hole through which the two communication lines pass is formed in the cylindrical portion.

  The power line communication device according to the present invention includes two capacitors respectively connected to the two communication lines, and the signal converter includes a primary coil connected to the two capacitors and the primary coil. And a secondary coil electromagnetically coupled to the coil.

In the present invention, the connector device to which the charging cable is connected is provided with a coil for noise reduction in power line communication, and the power line communication device is downsized (the entire device for power line communication in the vehicle including the connector device). (Miniaturization).
In the connector device, a cylindrical portion through which a plurality of internal wirings connected to the connection terminals are inserted is provided in a housing portion that accommodates a plurality of connection terminals for connection with the charging cable. Two annular magnetic bodies are arranged on the outer periphery of the cylindrical portion. The two annular magnetic bodies may be arranged side by side in the axial direction of the cylindrical portion, or the other annular magnetic body may be arranged on the outer periphery of one annular magnetic body. In addition, two power supply lines extending from the projecting ends through the cylindrical portions are wound around the two annular magnetic bodies, respectively. A coil is comprised by the annular magnetic body and the electric power supply wire wound around this, and this coil can be used as a coil for noise reduction.
Thereby, since it is not necessary to provide a large coil for noise reduction on the circuit board of the power line communication device, the circuit board of the power line communication device can be downsized.

  In the present invention, the tubular portion of the connector device is formed with a groove for accommodating the winding portions of the two power supply lines wound around the annular magnetic body. The configuration may be such that the winding portions of the two power supply lines are stored in one groove formed in the cylindrical portion, and the winding portions of the two power supply lines are stored in the two grooves formed in the cylindrical portion. The structure which each accommodates may be sufficient. By forming the groove in the cylindrical portion, the annular magnetic body can be fitted on the cylindrical portion of the connector device in a state where the power supply line is wound, and the assembly of the connector device can be facilitated. it can.

In the present invention, a charging cable including two power supply lines (two AC (Alternating Current) lines in a single-phase three-wire AC power supply (that is, two wirings other than the ground wiring)) is connected. By doing so, the power line communication device mounted on the vehicle and the external power supply device perform power line communication via the charging cable. Each of the power line communication device and the power supply device includes a signal converter provided between two power supply lines connected to the two power supply lines of the charging cable, and each power line communication unit transmits a signal to the power supply line. Are communicated by superimposing and extracting the superimposed signal.
In this configuration, the power line communication device of the vehicle is configured using the connector device described above. In this case, two communication lines are connected to the two power supply lines in the cylindrical portion (that is, the portion closer to the charging cable than the portion wound around the annular magnetic body). A signal converter for power line communication is connected to the communication line of the book (through a filter circuit or the like). Thereby, this coil can be effectively utilized for noise reduction, etc., without communication being interrupted by the coil comprised by winding an electric power supply line around an annular magnetic body.

  Further, in the present invention, the tubular portion of the connector device is formed with a groove communicating with the tip portion. Thereby, the two communication lines connected to the power supply line in the cylindrical portion can be extended to the outside through the groove of the cylindrical portion. By configuring the communication line to extend outside the cylindrical part through the groove, it is possible to easily perform the work of extending the communication line connected to the power supply line to the outside of the cylindrical part. Become. In addition, the groove | channel of a cylindrical part may be formed in a cylindrical part so that two communication lines may each pass separately, and may pass two communication lines in one common groove | channel.

  In the present invention, a hole for passing two power supply lines is formed in the cylindrical portion of the connector device. Compared with the above-described configuration in which the groove is formed in the tubular portion, it is only necessary to form a minimum hole through which the power supply line is passed through the tubular portion, so that the strength of the tubular portion can be increased. Note that two holes in the cylindrical portion may be formed in the cylindrical portion so that the two communication lines are individually passed, or two communication lines may be passed through one common hole.

  In the present invention, a capacitor is connected to each of the two communication lines connected to each of the two power supply lines, a primary coil is connected to the two capacitors, and the primary coil is electromagnetically connected to the primary coil. A signal converter is configured by providing a coupled secondary coil. Thereby, a signal converter can superimpose and extract a signal on a power supply line, and power line communication by a power line communication unit can be realized.

  In the case of the present invention, the vehicle connector device to which the charging cable is connected is provided with two annular magnetic bodies on the outer periphery of the cylindrical portion, and two power supply lines extending from the cylindrical portion are provided with the annular magnetic body. Since the coil for reducing noise in power line communication is provided by winding the body around the body, it is not necessary to provide a coil on the circuit board of the power line communication device. The power line communication device can be easily mounted on the vehicle.

It is a schematic diagram for demonstrating the structure of the power line communication system which concerns on this invention. It is a block diagram which shows the internal structure of the electric vehicle corresponding to the power line communication system which concerns on this invention. It is an external appearance perspective view which shows the structure of a connector apparatus. It is an external appearance perspective view which shows the structure of a connector main body. It is a typical top view which shows the structure of a cylindrical part. It is a schematic diagram for demonstrating the structure of the coil of a connector apparatus. It is a schematic diagram for demonstrating the effect of the coil of the power line communication apparatus which concerns on this invention. It is a typical top view which shows the structure of the cylindrical part which concerns on a modification. It is a schematic diagram for demonstrating the structure of the coil of the connector apparatus which concerns on a modification.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a schematic diagram for explaining a configuration of a power line communication system according to the present invention. In the present embodiment, when a charging stand and an electric vehicle are connected with a charging cable to charge the battery of the electric vehicle, information such as charging control, user authentication or billing management is transmitted through power line communication using the charging cable. Thus, a configuration for transmitting and receiving between a desk lamp and an electric vehicle will be described as an example.

  A charging cable for connecting an electric vehicle and a charging station includes two power supply lines (hereinafter simply referred to as AC lines) 71 and 72 to which an AC voltage is applied, and a ground line (shown in FIG. 1) connected to a ground potential. Is omitted). In the present embodiment, a three-wire AC voltage using two AC lines and one ground line is supplied from the charging station to the electric vehicle.

  The charging stand is connected to AC lines 71 and 72 of the charging cable, and has two internal wirings (hereinafter simply referred to as AC lines) 51 and 52 for supplying power to which an AC voltage from the power source is applied. . In the charging stand, the capacitor 56, the primary coil 55a of the transformer 55, and the capacitor 56 are connected in series in this order between the two AC wires 51 and 52. The two capacitors 56 connected to the AC lines 51 and 52 constitute a filter circuit. The secondary coil 55b of the transformer 55 is connected to a power line communication unit (not shown) in the charging stand.

  Similarly, the electric vehicle is connected to AC lines 71 and 72 of the charging cable, and two internal wirings for power supply (hereinafter simply referred to as AC) for guiding the electric power from the charging stand and the charging cable to the charger 4 in the vehicle. 11 and 12). In the electric vehicle, AC lines 11 and 12 are AC lines 11a and 12a for power supply connected to the charger 4 through the coil 17, and AC lines for power line communication connected to the transformer 15 through the capacitor 16. Branches to 11b and 12b. Between the AC lines 11b and 12b for power line communication, the capacitor 16, the primary coil 15a of the transformer 15, and the capacitor 16 are connected in series in this order. The two capacitors 16 connected to the power line communication AC lines 11b and 12b constitute a filter circuit. The secondary coil 15b of the transformer 15 is connected to a power line communication unit (see FIG. 2) in the electric vehicle.

  In the electric vehicle, coils 17 are provided in the power supply AC wires 11a and 12a, respectively. The coils 17 are respectively provided in the power supply AC lines 11a and 12a from the branch portions of the power supply AC lines 11a and 12a of the AC lines 11 and 12 and the AC lines 11b and 12b for power line communication to the charger 4. Provided. The coil 17 is for reducing noise that enters the AC wires 11 and 12 from inside and outside. By providing the coil 17, communication characteristics of power line communication using the transformer 15 can be improved. In addition, although illustration is abbreviate | omitted, the same coil may be provided also in a charging stand and the communication characteristic may be improved.

  By connecting the charging station and the electric vehicle with a charging cable, the charging line AC line 51, the charging cable AC line 71 and the electric vehicle AC line 11 are connected, and the charging station AC line 52, Two power supply paths are configured, that is, a power supply path to which the AC line 72 of the charging cable and the AC line 12 of the electric vehicle are connected. In a state where the charging station and the electric vehicle are connected by a charging cable, a closed loop circuit including the two power supply paths described above, the capacitors 16 and 56, and the transformers 15 and 55 is configured and arranged in this loop. The transformers 15 and 55 can superimpose signals on the power supply path and take out the superimposed signals, and power line communication can be performed between the power receiving stand and the electric vehicle.

  FIG. 2 is a block diagram showing an internal configuration of an electric vehicle corresponding to the power line communication system according to the present invention, and shows blocks related to charging and communication of the electric vehicle. The electric vehicle 1 according to the present embodiment is equipped with a body ECU 2, a connector device 3, a charger 4, a battery 5, a power management ECU 6, and the like. The body ECU 2 performs lock / unlock control of the door of the electric vehicle 1 or lighting control of a headlight or the like, and includes a control unit 21, a power line communication unit 22, a wireless communication unit 23, a CAN (Controller Area Network). ) The communication unit 24 and the power supply circuit 25 are provided. In the electric vehicle 1 according to the present embodiment, the body ECU 2 having the power line communication unit 22 (by providing the coil 17 for improving the communication characteristics of power line communication not in the power line communication unit 22 or the charger 4 but in the connector device 3. ) Or downsizing of the charger 4 and improvement in the degree of freedom of arrangement in the electric vehicle 1.

  Specifically, the control unit 21 of the body ECU 2 is configured by a processing device such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and performs operation control of various units in the body ECU 2 and various arithmetic processes. Yes. In particular, in the present embodiment, the control unit 21 is configured to be able to exchange data with the power management ECU 6 of the electric vehicle 1, and provides the transmission data given from the power management ECU 6 to the power line communication unit 22 to perform power line communication. While performing data transmission, the power line communication part 22 performs the process which gives the received data received by power line communication to power management ECU6.

  The power line communication unit 22 includes the transformer 15 and the two capacitors 16 illustrated in FIG. The power line communication unit 22 superimposes a signal corresponding to the transmission data given from the control unit 21 on the AC lines 11 and 12 by the transformer 15 and transmits data to the charging station via the charging cable. Further, the power line communication unit 22 extracts signals from the charging station by extracting signals superimposed on the AC lines 11 and 12 using the transformer 15, and provides received data corresponding to the signals to the control unit 21.

  The wireless communication unit 23 performs wireless communication with communication devices inside and outside the vehicle, such as a mobile phone held by the user. The CAN communication unit 24 performs wired communication with other devices mounted on the electric vehicle 1. The wireless communication unit 23 and the CAN communication unit 24 transmit data provided from the control unit 21 and provide the received data to the control unit 21. The power supply circuit 25 supplies electric power supplied from the battery 5 (or another battery) of the electric vehicle 1 to each part in the body ECU 2 by adjusting a voltage value.

  The connector device 3 is for connecting a charging cable to the electric vehicle 1 and includes a connector main body 30 provided with a plurality of connection terminals and two coils 17 for noise reduction. . The AC lines 11 and 12 are connected to the two connection terminals provided on the connector main body 30, the AC lines 11 and 12 are branched into two, respectively, and the coil 17 is provided on one of the chargers 4. And the other is connected to the power line communication unit 22.

  The charger 4 charges the battery 5 with electric power supplied from a charging stand. Since the charging stand is for supplying power with an AC voltage of, for example, a voltage of 200 V and a frequency of 50 Hz or 60 Hz, the charger 4 converts the AC voltage into a DC voltage and applies it to the battery 5. To charge. The battery 5 accumulates drive power of a motor (not shown) that drives the electric vehicle, and is, for example, a lithium ion battery. The power management ECU 6 performs control related to charging of the electric vehicle, and receives information from the charging station (for example, voltage value, frequency or billing information of the supplied power) by power line communication by the power line communication unit 22 of the body ECU 2. Acquisition control is performed by controlling the operation of the charger 4 and the like based on the acquired information.

  FIG. 3 is an external perspective view showing the configuration of the connector device 3, and shows the external appearance of the portion that is inside the vehicle when mounted on the electric vehicle 1. However, in FIG. 3, the two coils 17 included in the connector device 3 are not shown. The connector device 3 includes a connector main body 30 that accommodates a plurality of connection terminals (not shown) to which two AC wires 11 and 12 and one grounding wiring 14 are connected. The connector main body 30 includes a mounting portion 31 having a substantially rectangular plate shape, and a cylindrical tubular portion 32 protruding from the center of one surface of the mounting portion 31. Attachment holes 33 are formed at the four corners of the attachment portion 31 so that the connector body 30 can be attached to a predetermined position of the vehicle body of the electric vehicle 1 with a screw or the like. The connector body 30 is attached so that the side on which the cylindrical portion 32 is provided is the inside of the vehicle body.

  The other surface of the attachment portion 31 of the connector main body 30 is provided with a cable connection portion 34 that is cylindrical and into which a charging cable is inserted and connected during charging. The cable connection portion 34 houses therein a plurality of connection terminals connected to the AC wires 11 and 12 and the ground wiring 14 and is electrically connected to the charging cable. The cable connecting portion 34 is provided with a cover 35 that can be opened and closed so as to close the opening in order to prevent the connection terminals from being exposed when the charging cable is not connected.

  FIG. 4 is an external perspective view showing the configuration of the connector main body 30, and illustrates the connector main body 30 as a single unit. FIG. 5 is a schematic plan view showing the configuration of the cylindrical portion 32. In the tubular portion 32 of the connector main body 30, a plurality of insertion tubes 36 having holes for inserting the AC wires 11 and 12 and the grounding wiring 14 are provided integrally with the tubular portion 32. Yes. The plurality of intubations 36 are provided side by side in the inner circumferential direction of the cylindrical portion 32. In the cylindrical portion 32, a plurality of gaps are provided between the inner peripheral surface of the cylindrical portion 32 and the outer peripheral surface of the inner intubation 36.

  The cylindrical portion 32 is formed with two grooves 32a in which the peripheral wall is cut into a substantially rectangular shape in the axial direction of the cylinder. The two grooves 32 a are formed so as to communicate with one of the gaps of the inner intubation 36 provided in the cylindrical portion 32. The width of the groove 32a (the length in the circumferential direction of the cylindrical portion 32) is larger than the thickness of the AC lines 11 and 12 (AC lines for power supply 11a and 12a).

  The cylindrical portion 32 is formed with two substantially circular through holes 32b on the peripheral wall thereof. The two through-holes 32b are formed from the outer peripheral surface of the tubular portion 32 so as to communicate with the two inserted tubes 36 into which the AC wires 11 and 12 are inserted among the inserted tubes 36 provided in the tubular portion 32. The inner tube 32 is provided so as to penetrate to the inner peripheral surface. The size (diameter) of the through hole 32b is set to be approximately the same as or slightly larger than the thickness of the AC lines 11b and 12b for power line communication.

  FIG. 6 is a schematic diagram for explaining the configuration of the coil 17 of the connector device 3, and schematically shows the periphery of the cylindrical portion 32 of the connector device 3. The AC wires 11 and 12 and the ground wiring 14 connected to the plurality of connection terminals accommodated in the cable connection portion 34 penetrate the front and back of the attachment portion 31 of the connector main body 30, and the intubation 36 of the cylindrical portion 32. And extends from the end of the cylindrical portion 32. However, the AC lines 11 and 12 are branched into thick power supply AC lines 11a and 12a and thin power line communication AC lines 11b and 12b in the cylindrical portion 32 (to the thick power supply AC lines 11a and 12a). The thin power line communication AC lines 11b and 12b are connected), and the power supply AC lines 11a and 12a extend from the end of the cylindrical portion 32. The AC lines 11b and 12b for power line communication extend to the outside from the outer peripheral surface of the cylindrical part 32 through two through holes 32b formed in the cylindrical part 32, and are connected to the capacitors 16 in the power line communication part 22, respectively. The

  The connector device 3 includes two toroidal cores 17a that are annular magnetic bodies. The inner diameter of the toroidal core 17a is set so as to be fitted onto the cylindrical tubular portion 32. The two toroidal cores 17a have substantially the same shape. The power supply AC wires 11 a and 12 a extending from the end of the cylindrical portion 32 are wound around different toroidal cores 17 a and then connected to the charger 4 mounted in the electric vehicle 1. By winding the power supply AC wires 11 a and 12 a around the toroidal core 17 a, the wound portions of the toroidal core 17 a and the power supply AC wires 11 a and 12 a can function as the coil 17.

  The toroidal core 17a is externally fitted and fixed to the cylindrical portion 32 after the AC wire 11a or 12a for power supply is wound. The two toroidal cores 17a are fixed side by side in the axial direction of the cylindrical portion 32, and the fixing position is closer to the end face side of the cylindrical portion 32 than the through hole 32b. At this time, the winding portions of the power supply AC wires 11a and 12a wound around the toroidal core 17a are accommodated in the grooves 32a formed in the cylindrical portion 32, and the winding portion is a cylindrical shape of the toroidal core 17a. There is no hindrance to the fitting to the portion 32.

  FIG. 7 is a schematic diagram for explaining the effect of the coil 17 of the power line communication device according to the present invention, and graphs the communication characteristics of the power line communication device. In the illustrated graph, the horizontal axis is the frequency [MHz] of power line communication, the vertical axis is the communication characteristic and the S / N ratio [dB], and the communication characteristic when the power line communication apparatus has the coil 17 is a solid line. The communication characteristics when the coil 17 is not provided are indicated by broken lines.

  As shown in the figure, by providing the coil 17 in the power line communication device, the communication characteristic of the S / N ratio related to the power line communication is improved. In this example, especially when the frequency is about 10 MHz, the effect of improving the communication characteristics by the coil 17 is great. However, this frequency can be changed as appropriate by adjusting the inductance value of the coil 17.

  In the power line communication device having the above configuration, the coil 17 is provided in the connector device 3 to reduce noise and improve the communication characteristics of power line communication, whereby the coil 17 is connected to the power line communication unit 22 of the body ECU 2. Or since it is not necessary to mount in the charger 4 grade | etc., The circuit board of body ECU2 or the charger 4 can be reduced in size, and mounting to the electric vehicle 1 of the body ECU2 or the charger 4 can be facilitated. . Further, the two power supply AC wires 11 a and 12 a that pass through the cylindrical portion 32 of the connector device 3 and extend from the end face thereof are wound around the toroidal core 17 a, and the two toroidal cores 17 a are connected to the cylindrical portion 32. Since the winding portion of the toroidal core 17a and the power supply AC wires 11a and 12a can function as the coil 17, the noise reduction coil 17 is provided in the connector device 3. It can be easily installed.

  In addition, the toroidal core 17a is configured to be fitted onto the cylindrical portion 32, and the cylindrical portion 32 is provided with a groove for accommodating the winding portions of the power supply AC wires 11a and 12a wound around the toroidal core 17a. By forming 32a, the toroidal core 17a can be externally fitted to the cylindrical portion 32 of the connector device 3 in a state where the AC wires 11a and 12a for supplying power are wound, and the solenoid core 17a with respect to the connector body 30 can be fitted. Fixing can be facilitated, and the number of parts of the connector device 3 can be reduced and the assembly process can be simplified.

  Further, the AC lines 11 and 12 are branched into the power supply AC lines 11a and 12a and the power line communication AC lines 11b and 12b in the cylindrical portion 32 of the connector device 3, and the power supply AC lines 11a and 12a are branched. In the power supply path from the connection terminal for connecting to the charging cable to the coil 17, the power line communication AC lines 11 b and 12 b are connected to the power line communication unit 22 by being wound around the toroidal core 17 a. The power line communication unit 22 can be provided, and the coil 17 can be effectively used for noise reduction without the power line communication by the power line communication unit 22 being hindered by the coil 17.

  Further, two through holes 32b are formed in the peripheral wall of the cylindrical portion 32, and the AC lines 11b and 12b for power line communication connected to the AC lines 11 and 12 in the cylindrical portion 32 are connected to the cylindrical portion through the through holes 32b. By adopting a configuration that allows passage through the inside and outside of the cylindrical portion 32, the power line communication AC lines 11 b and 12 b branching within the cylindrical portion 32 can be easily connected to the power line communication portion 22 provided outside the cylindrical portion 32. .

  Further, the capacitors 16 are connected to the AC lines 11b and 12b for power line communication extending from the through holes 32b of the cylindrical portion 32, respectively, and the primary coil 15a of the transformer 15 is connected to the two capacitors 16, and this 1 By connecting the secondary coil 15 b electromagnetically coupled to the secondary coil 15 a to the power line communication unit 22 (the communication circuit thereof), the power line communication unit 22 uses the transformer 15 to transmit signals to the AC lines 11 and 12. Superposition and extraction can be performed, and power line communication can be realized.

  In the present embodiment, the power line communication unit 22 that performs signal processing of the power line communication device is provided in the body ECU 2. However, the present invention is not limited to this, and the electric vehicle 1 is separated from the body ECU 2. It is good also as a structure which mounts a power line communication apparatus and provides the power line communication part 22 in this power line communication apparatus. Even in this case, since it is not necessary to mount the coil 17 on the circuit board of the power line communication device, the power line communication device can be downsized.

  Further, although the electric vehicle 1 has been described as an example of a vehicle having a power line communication function, the present invention is not limited to this, and other vehicles having a function of charging a battery from the outside, such as a plug-in hybrid vehicle. May be. Moreover, although the charging stand has been described as an example of a power supply device having a power line communication function, the present invention is not limited to this, and may be another device having a function of supplying power to the vehicle via a charging cable. . For example, when a user connects a charging cable to an outlet at home to charge the vehicle, a configuration in which a power line communication device is provided on a distribution board at home may be used. Furthermore, the structure which mounts the circuit which performs power line communication in a charging cable may be sufficient.

  Further, the two toroidal cores 17a having substantially the same shape are arranged and fixed in the axial direction of the cylindrical portion 32. However, the present invention is not limited to this. It is good also as a structure which carries out the outer fitting to the cylindrical part 32, and is fixed, and another toroidal core 17a is further fitted and fixed to this toroidal core 17a. In addition, the cylindrical portion 32 is formed with two grooves 32a for accommodating the winding portions of the power supply AC wires 11a and 12a. However, the present invention is not limited to this, and a single groove 32a is formed in the cylindrical portion 32. The power supply AC lines 11a and 12a may be housed together in one groove 32a. In addition, the capacitor 16 and the transformer 15 are provided in the power line communication unit 22 in the body ECU 2. However, the configuration is not limited thereto, and the capacitor 16 or the transformer 15 may be provided in the connector device 3.

(Modification)
In the connector device 3 according to the above-described embodiment, the two through holes 32b are formed in the cylindrical portion 32 so that the AC lines 11b and 12b for power line communication are passed. However, the present invention is not limited to this. It is good also as a structure shown in a modification. FIG. 8 is a schematic plan view showing the configuration of the cylindrical portion 32 according to the modification. FIG. 9 is a schematic diagram for explaining the configuration of the coil 17 of the connector device 3 according to the modification.

  In the tubular part 32 of the connector device 3 according to the modification, the AC supply lines 11a, 12a and the installation wiring 14 extend from the end of the tubular part 32 extending in a substantially rectangular shape in the axial direction. The groove 32c is formed in two places. The two through holes 32b are arranged on the outer peripheral surface of the cylindrical portion 32 so as to communicate with the two inner tubes 32 into which the AC wires 11 and 12 are inserted, among the inner tubes 36 provided in the cylindrical portion 32. To the inner peripheral surface of the inner intubation 32. The length of the groove 32c in the axial direction is longer than the length of the groove 32a that accommodates the winding portions of the power supply AC wires 11a and 12a, and the width of the groove 32c (the length in the circumferential direction of the cylindrical portion 32) is It is smaller than the width of the groove 32a. The width of the groove 32c is set to be approximately the same as or slightly larger than the thickness of the AC lines 11b and 12b for power line communication.

  The AC lines 11b and 12b for power line communication connected to the AC lines 11 and 12 in the cylindrical part 32 pass from the outer peripheral surface of the cylindrical part 32 to the outside through two grooves 32c formed in the cylindrical part 32. The extension is connected to the capacitor 16 in the power line communication unit 22. By forming the groove 32c in the cylindrical portion 32 instead of the through hole 32b, it is possible to easily perform the work of extending the AC lines 11b and 12b for power line communication from the inside of the cylindrical portion 32 to the outside. .

1 Electric vehicle 2 Body ECU
3 Connector Device 4 Battery Charger 11 AC Line (Power Supply Line)
11a AC line for power supply (power supply line)
11b AC line (communication line) for power line communication
12 AC line (power supply line)
12a AC line for power supply (power supply line)
12b AC line for power line communication (communication line)
14 Grounding wiring (internal wiring)
15 Transformer (signal converter)
15a Primary coil 15b Secondary coil 16 Capacitor 17 Coil 17a Toroidal core (annular magnetic body)
21 Control unit 22 Power line communication unit 30 Connector body (accommodating unit)
31 Attaching part 32 Cylindrical part 32a Groove 32b Through hole (hole)
32c Groove 33 Through-hole 36 Inner tube 51 AC line 52 AC line 55 Transformer 55a Primary coil 55b Secondary coil 56 Capacitor 71 AC line 72 AC line

Claims (6)

In a connector device including a housing portion that houses a plurality of connection terminals, and a plurality of wires that include two power supply lines and are connected to the connection terminals,
A cylindrical portion that protrudes from the housing and allows the plurality of wires to pass therethrough;
Two annular magnetic bodies arranged on the outer periphery of the cylindrical portion,
The connector device, wherein the power supply lines extending from the cylindrical portion are respectively wound around the annular magnetic body. The annular magnetic body is adapted to be externally fitted to the cylindrical portion,
The connector apparatus according to claim 1, wherein a groove for receiving a winding portion of the power supply line wound around the annular magnetic body is formed in the tubular portion. The connector device according to claim 1 or 2,
Two communication lines respectively connected to the power supply line in the tubular portion;
An electromagnetic induction type signal converter connected to the two communication lines, for superimposing a signal on the power supply line and extracting a signal superimposed on the power supply line;
A power line communication device comprising: a power line communication unit that performs power line communication via the signal converter. The power line communication device according to claim 3, wherein a groove is formed in the tubular portion so as to communicate with a distal end portion of the tubular portion and allow the two communication lines to pass therethrough. The power line communication device according to claim 3, wherein a hole through which the two communication lines pass is formed in the cylindrical portion. Comprising two capacitors respectively connected to the two communication lines;
The signal converter is
A primary coil connected to the two capacitors;
The power line communication apparatus according to claim 3, further comprising a secondary coil electromagnetically coupled to the primary coil.

Images