JP2013143656A - Superposing/separating device, power receiving connector, charging system, and communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superposing/separating device, power receiving connector, charging system, and communication system that can cope with both of power line communication in which a signal such as a communication signal is superposed on a power supply line and inband communication in which the signal such as the communication signal is superposed on a control line transmitting a control signal such as a control pilot signal when a power storage device mounted on a vehicle is charged by a power supply device.SOLUTION: A superposing/separating device 15 is placed, such as a coupling transformer comprising a first primary coil 151 connected to a power supply line 32, a second primary coil 152 connected to a control line 34, and a secondary coil 150. Depending on a communication method of a power supply device 2, a circuit for power line communication is formed by the superposing/separating device 15, a first capacitor 16a, power supply lines 31, 32, a superposing/separating unit 23, capacitor 24, etc., or a circuit for in-band communication is formed by the superposing/separating device 15, a second capacitor 16b, ground wire 33, a control line 34, etc.

Description

  The present application relates to a superposed separator used for communication performed when power is fed from a power feeding device to a power storage device mounted on a vehicle, a power receiving connector including the superposed separator, and a charging system and a communication system using the superposed separator.

  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. The electric vehicle charges the battery by supplying power from an external power supply device. Moreover, even if it is a hybrid vehicle, a plug-in hybrid vehicle that can charge a battery from an external power supply device has been put into practical use. The external power supply device is a power supply device installed in a facility such as a general house or a commercial power supply station. When power is supplied from the power supply device to the vehicle, the plug at the end of the charging cable connected to the power supply device is connected to a power supply port provided in the vehicle as a power receiving connector. Then, power is supplied from the power supply device to the vehicle via the power supply line included in the charging cable, and the battery is charged.

  The charging cable includes not only the power supply line but also other wiring such as a grounding line and a control line. The control line is a wiring used for transmission of a control signal such as a control pilot signal used for power supply control of the power storage device. By transmitting and receiving a control signal between the power feeding device and the vehicle via the control line, various states such as the connection state of the charging cable, the state of chargeability, the state of charge, etc. are detected, and according to the detected state Charging control is performed.

  Furthermore, when commercializing an automobile that requires power supply from the outside, such as an electric vehicle or a hybrid vehicle, information for charging control and communication information for managing charge amount or charging, etc. A communication function for transmitting and receiving data is required.

  Therefore, standardization of communication such as power line communication for performing communication between the vehicle and the power supply apparatus is being promoted by superimposing a communication signal on the power supply line.

  FIG. 8 is an explanatory diagram showing an example of the configuration of power line communication that is being standardized. In FIG. 8, reference numeral 1000 denotes a vehicle, and the vehicle 1000 is connected by a charging cable 3000 when power is supplied from the power supply device 2000. The charging cable 3000 is a control cable that transmits two power supply lines 3001 and 3002 used as power supply lines, a ground line 3003 that is a grounding conductor, and a control signal such as a control pilot signal (CPLT) used for charge control. The line 3004 is included.

  One end of the charging cable 3000 is connected to the power feeding device 2000 side, and a plug 3005 provided on the other end side is connected to a power receiving connector 1001 provided as a connecting portion at a power feeding port on the vehicle 1000 side. Power supply is possible.

  The power supply apparatus 2000 includes a power supply unit 2001 that supplies AC power, a charge control unit 2002 that performs communication related to charge control, a communication unit 2003 that transmits and receives communication signals, and communication signals for the power supply lines 3001 and 3002. And a superimposing / separating unit 2004 for superimposing and separating the above.

  The superimposing / separating unit 2004 superimposes various communication signals on the power supply lines 3001 and 3002 and separates the superimposed various communication signals. The superimposing / separating unit 2004 superimposes various communication signals output from the communication unit 2003, and inputs the separated various communication signals to the communication unit 2003, whereby communication of the communication unit 2003 is performed.

  The vehicle 1000 includes a power receiving connector 1001, a battery 1002, a charging device 1003 that charges the battery 1002, a charging control device 1004 that performs communication related to charging control, a communication device 1005 that transmits and receives communication signals, and a ground line. 3003 and a superimposition separator 1006 that superimposes and separates communication signals on the control line 3004.

  The superimposing / separating device 1006 superimposes various communication signals on the power supply lines 3001 and 3002, and separates the superimposed various communication signals. The superimposing / separating device 1006 superimposes various communication signals output from the communication device 1005, and inputs the separated various communication signals to the communication device 1005, whereby communication of the communication device 1005 is performed.

  Further, as a method for transmitting and receiving communication signals, not only power line communication but also standardization is being promoted for communication such as inband communication in which a communication signal is superimposed on a control signal and transmitted and received between a vehicle and a power feeding device (for example, (Refer nonpatent literature 1.).

  FIG. 9 is an explanatory diagram illustrating a configuration example of inband communication that is being standardized. As shown in FIG. 9, various communication signals are superimposed on the power supply lines 3001 and 3002 in the power line communication, whereas various communication signals are superimposed on the ground line 3003 and the control line 3004 in the inband communication. .

  In other words, in the power feeding apparatus 2000, the superimposing / separating unit 2004 superimposes various communication signals on the ground line 3003 and the control line 3004 and separates the various communication signals superimposed. The superimposing / separating unit 2004 superimposes various communication signals output from the communication unit 2003, and inputs the separated various communication signals to the communication unit 2003, whereby communication of the communication unit 2003 is performed.

  In vehicle 1000, superimposition separator 1006 superimposes various communication signals on ground line 3003 and control line 3004, and separates the various communication signals superimposed. The superimposing / separating device 1006 superimposes various communication signals output from the communication device 1005, and inputs the separated various communication signals to the communication device 1005, whereby communication of the communication device 1005 is performed.

"SURFACE VEHICLE RECOMMENDED PRACTICE", J1772 JAN2010, Society of Automotive Engineers, Inc., October 1996 (revised January 2010)

  However, since the above-described communication method is also in the process of formulating a standard and considering adoption, different communication methods may be adopted depending on the country or region. If it is attempted to absorb such differences in communication methods by designing the specifications of the vehicle main body for each country or region, there is a risk that enormous costs may arise.

  Also, when trying to absorb differences in communication methods by replacing parts, the product number increases, which may lead to problems such as increased management costs and attachment errors.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a superposition separator, a power receiving connector, a charging system, and a communication system that can handle both power line communication and inband communication.

  The superposition separator according to the present invention can be connected to an internal wiring for supplying power to a power storage device mounted on a vehicle, and superimposes a communication signal transmitted / received to / from a device outside the vehicle on the internal wiring. In the vehicle-mounted superposed separator to be separated, the two power supply lines and the ground line included in the internal wiring, and a control line for transmitting a control signal used for power supply control can be connected. A first primary coil connected to at least one of the feeder lines, a second primary coil connected to at least one of the ground line and the control line, and electromagnetically coupled to the first primary coil and the second primary coil And a secondary coil.

  In the superposition separator according to the present invention, both ends of the first primary coil can be connected to a branch line branched from each of the two power supply lines, or can be interposed in one or both of the two power supply lines. The second primary coil can be connected at both ends to a branch line branched from the ground line and the control line, or can be interposed in one or both of the ground line and the control line. To do.

  The power receiving connector according to the present invention can be mounted on a vehicle, and can be connected to a power supply line and a ground line outside the vehicle, and a control line for transmitting a control signal used for power supply control. A plurality of connection terminals capable of connecting a power supply line, a ground line and a control line, a plurality of internal wirings connected to the power supply line, the ground line and the control line via the connection terminals, and the internal wiring And a superimposing separator according to claim 1 or 2 connected to.

  A charging system according to the present invention includes a power storage device, and transmits an external power supply device that supplies power to the power storage device, a power supply line and a ground line used for power supply, and a control signal used for power supply control for the power storage device. In a charging system mounted on a vehicle that can be connected by a control line, the charging system includes the power receiving connector and a communication device connected to a secondary coil included in a superposition separator included in the power receiving connector, and the superposition separation. By superimposing and separating a communication signal with respect to the feeder line by electromagnetic induction between the first primary coil and the secondary coil, or by electromagnetic induction between the second primary coil and the secondary coil. The communication device is configured to transmit and receive communication signals to and from the power supply device by superimposing and separating communication signals on at least one of the control line and the ground line. To.

  In the charging system according to the present invention, at least one of the power supply line, the ground line, and the control line includes a blocking unit that blocks a signal in a band used for a communication signal, inside the vehicle from a connection position of the superposition separator. It is characterized by that.

  In a communication system according to the present invention, a power supply device and a vehicle equipped with a power storage device fed from the power supply device are connected by a power supply line, a ground line, and a control line that transmits a control signal used for power supply control. In the communication system, the vehicle includes the superposition separator and a communication device connected to a secondary coil included in the superposition separator, and the superposition separator separates the first primary coil and the secondary coil. A communication signal is transmitted to at least one of the control line and the ground line by superimposing and separating the communication signal with respect to the power supply line by electromagnetic induction or by electromagnetic induction between the second primary coil and the secondary coil. The communication device is configured to transmit and receive communication signals to and from the power feeding device.

  In the present invention, both the first primary coil connected to the power supply line and the second primary coil connected to the ground line and / or the control line are electromagnetically coupled to the secondary coil, thereby supplying the power supply line. And a communication signal can be superimposed on either the control line or the like.

  A superimposed separator, a power receiving connector, a charging system, and a communication system according to the present invention include a first primary coil connected to two power supply lines, and a second primary coil connected to at least one of a ground line and a control line. Are electromagnetically coupled to the secondary coil to allow the communication signal to be superimposed on both the feeder line and the control line. Thereby, it is possible to correspond to both power line communication and inband communication.

  Therefore, there is no need to design a vehicle body having different specifications for each country or region having a different communication method, so that it is possible to suppress an increase in cost.

  In addition, since replacement of parts is not necessary, it is possible to suppress the occurrence of problems such as an increase in management cost and the occurrence of mounting mistakes.

  Moreover, in this invention, there exists an outstanding effect that the member regarding communication can be handled integrally by providing a superimposition separator to a power receiving connector.

  In the present invention, by providing a blocking means such as a low-pass filter, it is possible to prevent an inappropriate leakage of the communication signal, and the excellent effects are obtained.

It is explanatory drawing which shows the structural example of the charging system which concerns on Embodiment 1 of this invention. It is an external view which shows an example of the power receiving connector which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the structural example of the charging system which concerns on Embodiment 2 of this invention. It is a circuit diagram which shows the structural example of the low pass filter used with the charging system which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows the structural example of the charging system which concerns on Embodiment 3 of this invention. It is explanatory drawing which shows the structural example of the charging system which concerns on Embodiment 4 of this invention. It is a chart which shows the example of a combination of the communication system in embodiment of this invention. It is explanatory drawing which shows the structural example of the power line communication in which standardization is advanced. It is explanatory drawing which shows the structural example of the inband communication in which standardization is advanced.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

Embodiment 1 FIG.
The charging system of the present invention can handle both power line communication using a power supply line and inband communication using a control line, which will be described later, when transmitting and receiving various communication signals between the vehicle and the power supply device. The present invention relates to a system using a vehicle equipped with a superimposing separator. In addition, as a method of superimposing a signal on various wirings such as a power supply line by a superimposing separator, a method of interposing a superposing separator on various wirings (hereinafter referred to as an on-line system), a branch line is provided on various wirings, and superimposing and separating. There are methods such as a method of connecting devices (hereinafter referred to as a line-to-line method). In the first embodiment, a mode will be described in which power is supplied from a power supply device that performs power line communication to a vehicle equipped with a superposed separator corresponding to the line method.

  FIG. 1 is an explanatory diagram showing a configuration example of a charging system according to Embodiment 1 of the present invention. FIG. 1 shows an example in which the charging system of the present invention is applied to a form in which a battery (power storage device) 10 provided in a vehicle 1 such as an electric vehicle or a plug-in hybrid vehicle is fed from a power feeding device 2 such as a charging stand. ing. The charging system according to the present invention is a system related to charging mounted on the vehicle 1, and the vehicle 1 and the power feeding device 2 are connected by connecting the vehicle 1 according to the charging system of the present invention to the power feeding device 2. The communication system which transmits / receives a communication signal between is comprised.

  The vehicle 1 and the power supply device 2 can be connected by a charging cable 3. The charging cable 3 is used for control to transmit control signals such as two power supply lines 31 and 32 used as power supply lines, a grounding wire 33 serving as a grounding conductor, and a control pilot signal (CPLT) used for charging control. The line 34 is included. One end of the charging cable 3 is connected to the power feeding device 2 side, and the plug 30 provided on the other end side is connected to the power receiving connector 11 arranged as an in-vehicle power feeding port serving as a connection part on the vehicle 1 side. be able to. By connecting the plug 30 at the other end of the charging cable 3 to the power receiving connector 11, connection terminals 30 a and 30 b provided at the ends of the power supply lines 31 and 32, the ground line 33 and the control line 34 in the charging cable 3. , 30c, 30d come into contact with connection terminals 11a, 11b, 11c, 11d provided in the power receiving connector 11, and the circuit configuration illustrated in FIG. 1 is obtained.

  The feeder lines 31 and 32 are AC lines to which an AC voltage is applied. The control line 34 is a signal line for transmitting and receiving a control signal such as a control pilot signal, and charging control is performed based on a control pilot signal transmitted and received when the power supply apparatus 2 and the charging control apparatus 13 are connected. . In addition, the power supply lines 31 and 32, the ground line 33, and the control line 34 can be used as a medium for transmitting information for performing management such as vehicle authentication, charging management, charging management, and other various information. . That is, the vehicle 1 can communicate with the power feeding device 2 by superimposing and separating the communication signals on the power feeding lines 31 and 32 or the ground line 33 and the control line 34. As described above, in the first embodiment, since the power supply device 2 corresponding to power line communication is used, communication between the vehicle 1 and the power supply device 2 is performed by superimposing and separating communication signals on the power supply lines 31 and 32. Done.

  The power feeding device 2 is controlled so as to superimpose and separate communication signals, a power supply unit 20 that supplies AC power, a charging control unit 21 that performs communication related to charging control, a communication unit 22 that transmits and receives communication signals, and the like. And a superimposing / separating unit 23 interposed in the wire 34.

  One end of power supply lines 31 and 32 and a ground line 33 are connected to the power supply unit 20. One end of a control line 34 and a ground line 33 are connected to the charging control unit 21. The wiring in the power feeding apparatus 2 is an internal conductor that functions as an extension line connected to the power feeding lines 31 and 32, the ground line 33, and the control line 34 included in the charging cable 3 outside the power feeding apparatus 2. In the following description, for the sake of convenience, the power supply lines 31 and 32, the ground line 33, and the control line 34 will be described including the extended line portion disposed as the internal conductor.

  The charge control unit 21 is, for example, an output-side circuit that conforms to an international standard related to charge control, and transmits and receives control signals such as control pilot signals, thereby performing charge control in various states such as connection confirmation and energization start. Do.

  The charge control unit 21 includes various elements such as a capacitor C1 and a resistor R1, and various circuits such as an oscillation circuit O. The capacitor C1 is disposed so as to pass the ground line 33 and the control line 34.

  The superposition / separation unit 23 is interposed in the power supply line 32 and is configured using a coupling transformer (a circuit such as an electromagnetic induction type signal converter). The superposition / separation unit 23 superimposes various communication signals on the power supply line 32 and separates the various communication signals superimposed.

  For example, a capacitor 24 is provided as a route unit that forms a transmission route across the feeder line 31 and the feeder line 32. The capacitor 24 is disposed on the power supply unit 20 side from the position where the superposition / separation unit 23 of the feeder line 32 is interposed. The capacitor 24 has high impedance for the AC power supplied from the power supply unit 20 and the control signal, and has low impedance for the communication signal.

  As a frequency band used for the communication signal, a band of several tens of kHz to several hundreds of kHz, for example, 30 kHz to 450 kHz is used as a band for low-speed communication. Further, a band of several MHz to several tens of MHz, for example, 2 MHz to 30 MHz is used as a band for high speed communication. Since the control signal is output from the 1 kHz oscillator, the control signal is a signal having a lower frequency than the communication signal.

  The superimposing / separating unit 23 superimposes various communication signals output from the communication unit 22 on the transmission path formed by passing the capacitor 24 between the power supply line 31 and the power supply line 32, and also outputs the various communication signals separated. By inputting to the communication unit 22, communication of the communication unit 22 is performed.

  The vehicle 1 includes a battery 10 and a power receiving connector 11, a charging device 12 that charges the battery 10, a charging control device 13 that performs communication related to charging control, a communication device 14 that transmits and receives communication signals, and two And a superimposition separator 15 that superimposes and separates communication signals on the ground lines 33 and the control line 34.

  By connecting the plug 30 of the charging cable 3 to the power receiving connector 11 of the vehicle 1, the other ends of the power supply lines 31, 32 included in the charging cable 3, the other end of the ground line 33, and the other end of the control line 34 are connected. The connection terminals 30a, 30b, 30c, and 30d provided respectively are connected to the connection terminals 11a, 11b, 11c, and 11d provided in the power receiving connector 11.

  The power receiving connector 11 includes internal wirings 111, 112, 113, and 114 connected to the power supply lines 31, 33, the ground line 33, and the control line 34 through connection terminals 11 a, 11 b, 11 c, and 11 d. The other ends of the internal wirings 111 and 112 connected to the power supply lines 31 and 32 are connected to the charging device 12 via an AC line disposed inside the vehicle 1, and are connected to the battery 10 by the charging device 12. Charging is performed. The other end of the internal wiring 113 connected to the ground line 33 is connected to the charging device 12 and the charging control device 13 and further to the battery 10 via an internal wiring in the vehicle 1 or a vehicle body ground. The other end of the internal wiring 114 connected to the control line 34 is connected to the charging control device 13 via an extension line disposed as an internal wiring in the vehicle 1. In the following description, when there is no particular need to divide, for convenience, the internal wiring, the AC line, and the extension line will be described as the power supply lines 31 and 32, the ground line 33, and the control line 34.

  The superposition separator 15 is connected to the internal wiring 112 connected to the power supply line 32 and the internal wiring 114 connected to the control line 34.

  In addition, for example, a first capacitor 16a is provided as a route means for forming a transmission route across the internal wiring 111 connected to the power supply line 31 and the internal wiring 112 connected to the power supply line 32. The first capacitor 16 a is disposed on the charging device 12 side from the position where the superposition separator 15 is connected in the power supply line 32. The first capacitor 16a has a high impedance with respect to the AC power supplied via the feeder line, and has a band for low speed communication of several tens to several hundred kHz or a band for high speed communication of several MHz to several tens of MHz. It becomes low impedance for the communication signal to be used. That is, by using the first capacitor 16a as the routing means, the first capacitor 16a transmits the signal in the frequency band used for the communication signal and cuts off the signal in the frequency band used for the AC power in the transmission path.

  Furthermore, for example, a second capacitor 16b is provided as a route means for forming a transmission route by passing the internal wire 113 connected to the ground line 33 and the internal wire 114 connected to the control line 34. The second capacitor 16 b is disposed on the charge control device 13 side from the position where the superposition separator 15 is connected on the control line 34. The second capacitor 16b has a high impedance for the control signal and is low for a communication signal using a band for low speed communication of several tens to several hundreds kHz or a band for high speed communication of several MHz to several tens of MHz. Impedance. That is, by using the second capacitor 16b as the routing means, the second capacitor 16b transmits the signal in the frequency band used for the communication signal and cuts off the signal in the frequency band used for the control signal in the transmission path.

  The charge control device 13 is, for example, an input-side circuit that conforms to an international standard related to charge control, and includes various elements such as a capacitor C2, a resistor R2, and a diode Vd. When communication with the charging control unit 21 of the power supply device 2 is enabled, charging control in various states such as connection confirmation and communication start is performed by transmitting and receiving a control signal such as a control pilot signal.

  The communication device 14 has a function for transmitting and receiving various communication signals to and from the power supply device 2, and is connected to the superposition separator 15 by two communication lines.

  The superimposition separator 15 includes a first primary coil 151 whose both ends are connected to the feeder line 32, a second primary coil 152 whose both ends are connected to the control line 34, and the first primary coil 151 and the second primary coil 152. A circuit such as a coupling transformer (electromagnetic induction type signal converter) including a secondary coil 150 that is electromagnetically coupled to each other.

  The first primary coil 151 is connected to the feed line 32 in a state of being interposed on the internal wiring 112 connected to the feed line 32. The second primary coil 152 is connected to the control line 34 in a state of being interposed on the internal wiring 114 connected to the control line 34.

  The superposition separator 15 superimposes various communication signals on the power supply line 32 via the intervening internal wiring 112, and separates the various communication signals superimposed. The superposition separator 15 superimposes various communication signals output from the communication device 14 on the internal wiring 112, and inputs various communication signals separated from the internal wiring 112 to the communication device 14, thereby performing power line communication.

  Further, the superposition separator 15 superimposes various communication signals on the control line 34 via the intervening internal wiring 114, and separates the various communication signals superimposed. The superimposing / separating device 15 superimposes various communication signals output from the communication device 14 on the internal wiring 114 and inputs various communication signals separated from the internal wiring 114 to the communication device 14 to perform inband communication.

  It is also possible to configure so that the same or different superimposed separators 15 are interposed in both the feeder lines 31 and 32. In this case, the two first primary coils 151 may be provided so as to be interposed on both branch lines branched from the two power supply lines 31 and 32. Similarly, two second primary coils 152 interposed between both the ground line 33 and the branch line branched from the control line 34 may be provided.

  In the first embodiment, since the power supply device 2 that supports power line communication is used, power line communication that superimposes and separates communication signals on the power supply line 32 via the first primary coil 151 is performed. Note that, when connected to the power supply device 2 that supports inband communication, inband communication is performed to superimpose and separate communication signals on the control line 34 via the second primary coil 152.

  In the example of the first embodiment shown in FIG. 1, a loop for transmitting a communication signal by the superimposing / separating device 15, the first capacitor 16 a, the feeder lines 31 and 32, the superposing / separating unit 23, the capacitor 24 and other wirings, elements, and circuits. A circuit is formed. Thereby, it becomes possible to implement | achieve the power line communication which superimposes a communication signal with respect to the feeder lines 31 and 32 between the communication apparatus 14 in the vehicle 1, and the communication part 22 of the feeder apparatus 2. FIG.

  In addition, when connected to the power feeding device 2 that supports inband communication, the superposition separator 15, the second capacitor 16 b, the ground wire 33, the control line 34, other wiring, elements, circuits, and the power feeding device 2 side A loop circuit for transmitting a communication signal is formed by the wiring, element, and circuit.

  As described above, the charging system using the power receiving connector 11 including the superposition separator 15 according to the present invention can be adapted to both power line communication and inband communication.

  FIG. 2 is an external view showing an example of the power receiving connector 11 according to Embodiment 1 of the present invention. FIG. 2 shows a side surface of the power receiving connector 11. A housing 110 of the power receiving connector 11 illustrated in FIG. 2 shares two cylindrical bodies that share a central axis and have different radii and heights. Furthermore, it has a shape in which the accommodating body of the superposition separator 15 having a rectangular parallelepiped shape is coupled. Note that FIG. 2 shows a state where the lid provided on the housing 110 is opened. The lid is opened for the purpose of connecting the plug 30 during charging, for example.

  A part of the internal wiring 111, 112, 113, 114 is exposed from the housing 110, and a terminal for incorporation into the vehicle 1 is provided at the tip of the internal wiring 111, 112, 113, 114. A twisted pair wire 140 for connecting to the communication device 14 extends from the superposition separator 15, and a terminal for connecting to the communication device 14 is provided at the tip of the twisted pair wire 140. By using the twisted pair wire 140 as the wiring between the superposition separator 15 and the communication device 14, the influence of noise on the communication signal can be reduced.

  As described above, the housing 110 accommodates all or part of the connection terminals 11a, 11b, 11c, and 11d, the internal wirings 111, 112, 113, and 114, the superposition separator 15, the capacitor 16a, and the capacitor 16b. Has been. In addition, since these members such as various wirings, elements, circuits and the like are integrated as a replaceable unit, the casing 110 is fixed to the vehicle 1 by a method such as screwing, and is provided in each wiring. By appropriately connecting the terminals, work such as replacement of the power receiving connector 11 can be easily performed. In addition, if it can handle integrally, it is also possible to design suitably, such as providing the accommodating body of the superposition | separation separator 15 separately from a cylindrical body.

  By integrating the wiring, elements, and circuits up to the superposition separator 15 into the power receiving connector 11, the path through which the communication signal is transmitted can be shortened, and communication with the harness (wiring) in the vehicle 1 can be performed more than necessary. Prevent the signal from flowing.

  As a result, the risk of malfunction such as malfunction of various devices in the vehicle 1 and poor communication due to the influence of electromagnetic waves radiated from the communication signal is reduced. In addition, communication signals and various devices on the communication side can be made less susceptible to electromagnetic waves radiated from various devices in the vehicle 1.

  Further, by integrating the above-described wiring, elements, and circuits with the power receiving connector 11 disposed as the on-vehicle power supply port, the specification corresponding to the charging system of the present invention can be obtained simply by replacing the power receiving connector 11. Can do.

  In the first embodiment, the superimposing / separating device 15 is disposed so that the first primary coil 151 is interposed in the power supply line 31. However, the present invention is not limited thereto, and the power supply line 32 is interposed. The power supply line 31 and the power supply line 32 may be interposed.

  In the first embodiment, the superimposing / separating device 15 is disposed so that the second primary coil 152 is interposed in the control wire 34. However, the present invention is not limited to this, and the grounding wire 33 is provided. It may be arranged so as to be interposed between the ground line 33 and the control line 34.

Embodiment 2. FIG.
The second embodiment is a mode in which a low-pass filter is provided on the feeder line and the control line in the first embodiment. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the first embodiment is referred to and detailed description thereof is omitted.

  FIG. 3 is an explanatory diagram showing a configuration example of the charging system according to Embodiment 2 of the present invention. In the second embodiment, the internal wirings 111, 112, 114 of the vehicle 1 connected to the power supply lines 31, 32, and the control line 34 have low-pass filters (LPF) 111b, 112b, 114b is interposed. The low-pass filters 111b and 112b are disposed on the charging device 12 side from the position where the superposition separator 15 is connected in the internal wirings 111 and 112. The low-pass filter 114b is disposed on the charging control device 13 side from the position where the superposition separator 15 is connected in the internal wiring 114. The low-pass filters 111b, 112b, and 114b transmit signals in a band lower than a predetermined frequency, for example, signals in a band used for electromagnetic waves such as AC power and control signals used for power supply, and block communication signals.

  FIG. 4 is a circuit diagram showing a configuration example of the low-pass filters 111b, 112b, and 114b used in the charging system according to Embodiment 2 of the present invention. As shown in FIG. 4, the low-pass filters 111b, 112b, and 114b are configured as, for example, a circuit in which a coil having an inductance of 1.5 mH and a 1.0 kΩ resistor are arranged in parallel, or an equivalent circuit thereof. Note that another circuit may be used as long as similar characteristics can be obtained.

  In the charging system according to the second embodiment of the present invention, the power receiving connector 11 disposed as the in-vehicle power supply port includes the connection terminals 11a, 11b, 11c, and 11d, the internal wirings 111, 112, 113, 114, and the overlap separator 15. The capacitors 16a and 16b and the low-pass filters 111b, 112b, and 114b are integrated with the housing 110.

  Also in the second embodiment of the present invention, various wirings, elements, and circuits are integrated with the casing 110 of the power receiving connector 11, so an example of the appearance is related to the first embodiment shown in FIG. The same as the power receiving connector 11.

  By providing the low-pass filters 111b, 112b, and 114b integrally with the power receiving connector 11, the communication signal is prevented from leaking out of the power receiving connector 11, so that the mutual influence due to the electromagnetic waves shown in the first embodiment is reduced. It is possible to further increase the effectiveness of the effect. That is, it is possible to prevent noise radiated from one of the other devices in the vehicle 1 and the communication signal transmission path from affecting the other. Further, by providing the low-pass filter 114b, it is possible to prevent a communication signal from being transmitted to the charging control device 13, and to prevent occurrence of abnormality such as voltage misreading of the control signal.

Embodiment 3 FIG.
In the third embodiment, a mode will be described in which power is supplied from a power supply apparatus that performs in-band communication in a line-to-line method to a vehicle on which a superposition separator corresponding to the line-to-line method is mounted. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description of the first embodiment is omitted.

  FIG. 5 is an explanatory diagram showing a configuration example of the charging system according to Embodiment 3 of the present invention. In the third embodiment, the power feeding device 2 includes a power supply unit 20, a power reception control unit 21, a communication unit 22, and a superposition / separation unit 23.

  The superposition / separation unit 23 is connected to a branch line branched from the ground line 33 and a branch line branched from the control line 34 via capacitors 330 and 340, respectively, and is configured using a circuit such as a coupling transformer. .

  The superposition / separation unit 23 superimposes various communication signals on the ground line 33 and the control line 34 and separates the various communication signals superimposed. The superimposing / separating unit 23 superimposes various communication signals output from the communication unit 22, and inputs the separated various communication signals to the communication unit 22, whereby communication of the communication unit 22 is performed.

  The vehicle 1 includes a battery 10, a power receiving connector 11, a charging device 12, a charging control device 13, a communication device 14, and a superposition separator 15.

  The internal wirings 111 and 112 connected to the power supply lines 31 and 32 are provided with wiring branch portions 111a and 112a, respectively. Further, the power supply line branch lines 115 and 116 are branched from the wiring branch portions 111a and 112a.

  The feeder line branch lines 115 and 116 are connected to the first primary coil 151 of the superposition separator 15, and capacitors 115 a and 116 a are interposed. Capacitors 115a and 116a transmit signals in a band used for communication signals, and cut off AC power to separate communication signals.

  In addition, wiring branch portions 113a and 114a are provided in the internal wiring 113 connected to the ground line 33 and the internal wiring 114 connected to the control line 34, respectively. Further, a ground line branch line 117 is branched from the wiring branch part 113 a on the ground line 33 side, and a control line side branch line 118 is branched from the wiring branch part 114 a on the control line 34 side.

  The ground line branch line 117 and the control line branch line 118 are connected to the second primary coil 152 of the superposition separator 15 and capacitors 117a and 118a are interposed. Capacitors 117a and 118a transmit a signal in a band used for the communication signal and block the control signal to separate the communication signal.

  The superposition separator 15 superimposes various communication signals on the power supply lines 31 and 32 via the power supply line branch lines 115 and 116, and also separates the various communication signals superimposed. The superposition separator 15 superimposes various communication signals output from the communication device 14 on the power supply lines 31 and 32, and inputs various communication signals separated from the power supply lines 31 and 32 to the communication device 14 to thereby perform power line communication. Is done.

  Further, the superposition separator 15 superimposes various communication signals on the ground line 33 and the control line 34 via the ground line branch line 117 and the control line branch line 118, and also superimposes various communication signals. Separate the signal. The superimposition separator 15 superimposes various communication signals output from the communication device 14 on the ground line 33 and the control line 34, and also transmits various communication signals separated from the ground line 33 and the control line 34 to the communication device 14. Inband communication is performed by inputting.

  In the example of the third embodiment shown in FIG. 5, the superimposition separator 15, the ground line side branch line 117, the control line side branch line 118, the capacitors 117a and 118a, the ground line 33, the control line 34 and other wirings, A loop circuit for transmitting a communication signal is formed by the elements and circuits. Thereby, in-band communication in which a communication signal is superimposed on the ground line 33 and the control line 34 can be realized between the communication device 14 in the vehicle 1 and the communication unit 22 of the power feeding device 2.

  In addition, when connected to the power supply device 2 corresponding to power line communication, the superimposing separator 15, the power supply line branch lines 115 and 116, the capacitors 115 a and 116 a, the power supply lines 31 and 32, and other wirings, elements, and circuits are used. A loop circuit for transmitting a communication signal is formed.

  As described above, the charging system using the power receiving connector 11 including the superposition separator 15 according to the present invention can be adapted to both power line communication and inband communication.

  In addition, the power receiving connector 11 disposed as the on-vehicle power supply port includes connection terminals 11a, 11b, 11c, and 11d, internal wirings 111, 112, 113, and 114, wiring branch portions 111a, 112a, 113a, and 114a, and a power supply line side branch. The wires 115 and 116, the ground line branch line 117, the control line branch line 118, the capacitors 115 a, 116 a, 117 a and 118 a, and the superposition separator 15 are integrated into the casing 110.

  Also in the third embodiment of the present invention, various wirings, elements, and circuits are integrated with the housing 110 of the power receiving connector 11, so an example of the appearance is related to the first embodiment shown in FIG. The same as the power receiving connector 11.

Embodiment 4 FIG.
The fourth embodiment is a mode in which a low pass filter is provided on the feeder line and the control line in the third embodiment. In the following description, components similar to those in the second or third embodiment are denoted by the same reference numerals as those in the second or third embodiment, and the second or third embodiment is referred to, and detailed description thereof will be given. Omitted.

  FIG. 6 is an explanatory diagram showing a configuration example of a charging system according to Embodiment 4 of the present invention. In the fourth embodiment, low-pass filters (LPF) 111b and 114b are provided in the internal wirings 111 and 114 of the vehicle 1 connected to the power supply line 31 and the control line 34 as blocking means for blocking communication signals. Yes. The low-pass filter 111 b is disposed on the charging device 12 side from the position where the superposition separator 15 is connected in the internal wiring 111. The low-pass filter 114b is disposed on the charging control device 13 side from the position where the superposition separator 15 is connected in the internal wiring 114. The low-pass filters 111b and 114b transmit a signal in a band lower than a predetermined frequency, for example, a signal in a band used for electromagnetic waves such as AC power used for power supply and a control signal, and cut off a communication signal.

  In the charging system according to Embodiment 4 of the present invention, the power receiving connector 11 disposed as the on-vehicle power supply port includes the connection terminals 11a, 11b, 11c, and 11d, the internal wirings 111, 112, 113, 114, and the wiring branching part 111a. 112a, 113a, 114a, feeder line branch lines 115, 116, ground line branch line 117, control line branch line 118, capacitors 115a, 116a, 117a, 118a, superposition separator 15 and low pass filters 111b, 114b Is integrated with the housing 110.

  Also in the fourth embodiment of the present invention, since various wirings, elements, and circuits are integrated with the casing 110 of the power receiving connector 11, an example of its appearance is related to the first embodiment shown in FIG. The same as the power receiving connector 11.

  By providing the low-pass filters 111b and 114b integrally with the power receiving connector 11, the communication signal is prevented from leaking out of the power receiving connector 11, so that the effect of reducing the mutual influence by the electromagnetic wave shown in the second embodiment can be achieved. It is possible to further increase the effectiveness. That is, it is possible to prevent noise radiated from one of the other devices in the vehicle 1 and the communication signal transmission path from affecting the other. Further, by providing the low-pass filter 114b, it is possible to prevent a communication signal from being transmitted to the charging control device 13, and to prevent occurrence of abnormality such as voltage misreading of the control signal.

  In the first and second embodiments, a mode is shown in which power is supplied from a power supply apparatus that performs power line communication to a vehicle equipped with a superposition separator corresponding to the line method. Moreover, in the said Embodiment 3 and 4, the form which electrically feeds from the electric power feeder which performs inband communication by a line system is shown with respect to the vehicle by which the superimposition separator corresponding to a line system is mounted. However, as described in the above-described embodiment, it is also possible to connect the vehicle according to Embodiment 1 or the like to a power feeding device that performs inband communication, and the vehicle according to Embodiment 3 or the like can be connected to power line communication. It is also possible to connect to a power feeding device that performs the above.

  Further, the power feeding device side may be a line-to-line method and the vehicle side may be a line-based method, or the power-feeding device side may be a line-based method and the vehicle side may be a line-to-line method. Further, on the vehicle side, wiring according to different communication methods such as a line method for power line communication and a line-to-line method for inband communication may be incorporated. FIG. 7 is a table showing a combination example of communication methods in the embodiment of the present invention. As shown in FIG. 7, various communication methods can be combined.

  In the first to fourth embodiments, the power receiving connector is integrated with the connection terminal to the overlap separator. However, the present invention is not limited thereto, and only the connection terminal is incorporated into the power receiving connector. Appropriate wiring, circuits and elements can be integrated into the power receiving connector as required.

  Further, in the first to fourth embodiments, the superimposing / separating device according to the present invention is applied only to the vehicle side. However, the present invention is not limited thereto, and the vehicle separating unit having the same configuration is also provided on the power feeding device side. It is also possible to provide.

  As described above, the first to fourth embodiments only disclose a part of the myriad examples of the present invention, and should be appropriately designed in consideration of various factors such as purpose, application, and specifications. Is possible.

1 vehicle 10 battery (power storage device)
11 Power receiving connector 11a, 11b, 11c, 11d Connection terminal 110 Housing 111, 112, 113, 114 Internal wiring 111a, 112a, 113a, 114a Wiring branch part 111b, 112b, 114b Low-pass filter 115, 116 Feeding line side branch line 117 Ground side branch line 118 Control line side branch line 115a, 116a, 117a, 118a Capacitor 12 Charging device 13 Charging control device 14 Communication device 15 Superposition separator 150 Secondary coil 151 First primary coil 152 Second primary coil 16a First Capacitor 16b Second capacitor 2 Power supply device 20 Power supply unit 21 Charging control unit 22 Communication unit 23 Superimposition separation unit 24 Capacitor 3 Charging cable 30 Plug 30a, 30b, 30c, 30d Connection terminal 31, 32 Feeding line 33 Grounding line 3 Control lines 330, 340 capacitor

Claims (6)

In an in-vehicle superposition separator that can be connected to an internal wiring for power supply to a power storage device mounted on a vehicle and superimposes / separates a communication signal transmitted / received to / from a device outside the vehicle with respect to the internal wiring ,
It is possible to connect to two power supply lines included in the internal wiring, a ground line, and a control line for transmitting a control signal used for power supply control,
A first primary coil connected to at least one of the two feeders;
A second primary coil connected to at least one of the ground line and the control line;
And a secondary coil electromagnetically coupled to the first primary coil and the second primary coil. The first primary coil can be connected at both ends to a branch line branched from each of the two feed lines, or can be interposed in one or both of the two feed lines,
The second primary coil can be connected at both ends to a branch line branched from the ground line and the control line, or can be interposed in one or both of the ground line and the control line. Item 2. The superposed separator according to Item 1. In a power receiving connector that can be mounted on a vehicle and can be connected to a power supply line and a ground line outside the vehicle, and a control line that transmits a control signal used for power supply control,
A plurality of connection terminals capable of connecting a power supply line, a ground line and a control line;
A plurality of internal wirings connected to the power supply line, the ground line and the control line via the connection terminal;
A power receiving connector comprising: the superposed separator according to claim 1 or 2 connected to the internal wiring. An external power supply device that includes the power storage device and supplies power to the power storage device, and a power supply line and a ground line used for power supply, and a control line that transmits a control signal used for power supply control for the power storage device In a charging system mounted on a vehicle capable of
A power receiving connector according to claim 3;
A communication device connected to the secondary coil of the superposition separator provided in the power receiving connector,
By superimposing and separating the communication signal with respect to the feeder line by electromagnetic induction between the first primary coil and the secondary coil by the superposition separator, or electromagnetic induction between the second primary coil and the secondary coil In the charging system, the communication device transmits and receives the communication signal to and from the power feeding device by superimposing and separating the communication signal on at least one of the control line and the ground line.   5. At least one of the power supply line, the ground line, and the control line has a blocking unit that blocks a signal in a band used for a communication signal on the vehicle inner side than a connection position of the superposition separator. The charging system described in. In a communication system for connecting a power feeding device and a vehicle equipped with a power storage device fed from the power feeding device by a power feeding line and a grounding line, and a control line for transmitting a control signal used for power feeding control,
The vehicle is
The superposition separator according to claim 1 or 2,
A communication device connected to a secondary coil included in the superposition separator,
By superimposing and separating the communication signal with respect to the feeder line by electromagnetic induction between the first primary coil and the secondary coil by the superposition separator, or electromagnetic induction between the second primary coil and the secondary coil In the communication system, the communication device transmits and receives the communication signal to and from the power supply device by superimposing and separating the communication signal on at least one of the control line and the ground line.

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