JP2013046473A - Charger for electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charger for an electric vehicle which deals with electric wires pulled in from different directions.SOLUTION: A charger for an electric vehicle 1 includes a charger body 10 attached to a wall 200 of a building. The charger body 10 is provided with a charging cable CB2, having a charging connector CN1 detachably connecting with the electric vehicle, and a charging control part controlling charging to the electric vehicle to which the charging connector CN1 connects. Further, in the charger body 10, knockout parts 16, 18, serving as pull-in parts used for pulling in a power source cable for receiving power supply from an external power source to the interior, are respectively provided at an attachment surface to the wall 200 and a bottom surface which becomes a lower side when the charger is attached to the wall 200.

Description

  The present invention relates to a charging device for an electric vehicle.

  In recent years, electric vehicles using an electric motor as a power source, such as a battery-powered electric vehicle and a plug-in hybrid vehicle, have been spreading. As a conventional charging device for an electric vehicle, a stand-type one has been mainstream in places such as public facilities other than a house (see, for example, Patent Document 1). On the other hand, in general houses, a CCID cable is often connected to an outlet to charge an electric vehicle (for example, see Patent Document 2).

JP 2011-103287 A JP 2011-135654 A

  By the way, in recent years, a so-called Mode 3 type charging device for an electric vehicle in which a control circuit for controlling power supply to the electric vehicle and a charging cable are integrated has been developed. In the charging device for the electric vehicle of Mode 3 system, the trouble of connecting the charging cable to the outlet can be saved, but the device becomes larger than the outlet and is assumed to be installed on the wall in the house.

  When constructing such a charging device for an electric vehicle on a wall, in an existing house, it is assumed that an electric wire exposed on the wall of the house is drawn from the side. On the other hand, in a newly built house, it is assumed that an electric wire is drawn from the back of the wall in order to keep the aesthetic appearance of the building, and there is a problem that the method of drawing the electric wire is different between the new house and the existing house.

  This invention is made | formed in view of the said subject, The place made into the objective is providing the charging device for electric vehicles corresponding to the drawing-in of the electric wire from a different direction.

  The charging device for an electric vehicle of the present application includes a charging device main body attached to a wall of a building, and the charging device main body is connected with a charging cable having a charging connector that is detachably connected to the electric vehicle, and the charging connector. A charging control unit that controls charging of the electric vehicle is provided. In the charging device main body, a lead-in portion for drawing a power supply cable for receiving power supply from an external power source is provided on a mounting surface to the wall and at least one surface other than the mounting surface.

  In this electric vehicle charging device, it is also preferable that a lead-in portion is provided on each of the bottom surface and the mounting surface facing downward when the charging device main body is mounted on the wall.

  In this electric vehicle charging device, it is also preferable that the pull-in portion is provided with a knockout portion that forms a hole for introducing the power cable by being removed.

  ADVANTAGE OF THE INVENTION According to this invention, the charging device for electric vehicles corresponding to the drawing-in of the electric wire from a different direction can be provided.

The charging device for electric vehicles of this embodiment is shown, (a) is a front view, (b) is the external appearance perspective view seen from the rear side. It is explanatory drawing of the knockout part which showed the same as the above and was provided in the back surface of the charging device main body. It is explanatory drawing of the knockout part which showed the same as the above and was provided in the bottom face of the charging device main body. It is a side view same as the above. (A) (b) is an external appearance perspective view same as the above. It is a use condition figure same as the above. It is a block diagram which shows schematic structure same as the above.

  Hereinafter, an embodiment of a charging device for an electric vehicle according to the present invention will be described with reference to the drawings. In addition, the charging device for electric vehicles demonstrated by the following embodiment is installed in the wall of the building around a garage, for example in a common house, and is used in order to charge an electric vehicle. Here, the electric vehicle is a vehicle that travels by obtaining driving force from the electric power stored in the battery. For example, an electric vehicle (EV), a plug-in hybrid vehicle (PHEV), a fuel cell vehicle (FCV), or the like. I mean.

  FIG. 7 is a block diagram showing a schematic configuration of a charging device for an electric vehicle (hereinafter abbreviated as a charging device) 1. The charging device 1 includes a charging control unit 2, a display unit 3, an operation input unit 4, a relay R1, a zero-phase current transformer (ZCT) 5, and terminal blocks TB1 and TB2. The main body 10 is configured to be held.

  One end side of a power cable CB1 drawn into the charging device main body 10 through a lead-in portion to be described later is connected to the terminal block TB1. One end side of the charging cable CB2 drawn into the charging device body 10 is connected to the terminal block TB2. A charging connector CN1 that is detachably connected to the charging connector CN2 of the electric vehicle 100 is connected to the other end side of the charging cable CB2. The charging connector CN1 integrally includes a gripping part 110 gripped by a person and a connection part 111 that protrudes obliquely upward and forward from the front end side of the gripping part 110, and whose front end is detachably connected to the charging connector CN2 on the vehicle side. (See FIG. 5A). Here, the power cable CB1 is composed of two electric wires L1 and L2 having voltage poles and a ground line L3. Charging cable CB2 includes electric wires L4 for transmitting and receiving a signal (so-called CPLT signal) between two electric wires L1 and L2 having voltage poles, grounding wire L3, and charging circuit 101 provided in electric vehicle 100. Consists of.

  The two-pole contacts provided in the relay R1 are connected to the internal wirings connected to the voltage electrode wires L1 and L2, respectively, among the internal wirings connecting the terminals of the terminal blocks TB1 and TB2. The contact of the relay R1 is controlled to be turned on / off by the charging control unit 2. When the contact is turned on, power is supplied to the electric vehicle 100, and when the contact is turned off, power supply to the electric vehicle 100 is cut off. Note that the relay contact of the relay R1 is a normally-off contact, and when a charge start signal is input from the electric vehicle 100 to the charge control unit 2, the charge control unit 2 switches the relay R1 from the open state to the closed state. Then, electric power is supplied to the electric vehicle 100.

  The zero-phase current transformer 5 is used to detect an unbalanced current generated between the voltage electrode wires L1 and L2 when a leakage occurs in the electric circuit closer to the electric vehicle 100 than the relay R1.

  The charging control unit 2 opens or closes the relay R1 based on a signal input from the charging circuit 101 of the electric vehicle 100 via the electric wire L4 to turn on / off the power supply to the electric vehicle 100. Thus, charging of the electric vehicle 100 is controlled. In addition, when the charging control unit 2 detects the occurrence of electric leakage based on the output of the zero-phase current transformer 5 during charging, the charging control unit 2 opens the relay R1 and cuts off the power supply to the electric vehicle 100.

  The display unit 3 includes a display lamp such as a light emitting diode, for example, and the operation state (for example, lighting, blinking, and extinguishing) is switched by the charging control unit 2, and the status display of the charging device 1 (for example, charging, stopping, leakage) Detection).

  The operation input unit 4 is provided, for example, for performing an operation for stopping the power supply to the electric vehicle 100, and the charge control unit 2 performs a predetermined operation in response to a signal input from the operation input unit 4.

  Next, the structure of the charging device 1 will be described with reference to FIGS. In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the direction shown in FIG. 1A (attached to the wall 200), and the left side in FIG. 4 is described as the front side and the right side as the rear side. I do.

  The charging device main body 10 of the charging device 1 is formed in a substantially flat plate shape with a synthetic resin, and is formed into a base 11 attached to the wall 200 of the building, and a vertically long box shape whose rear side is opened with the synthetic resin. 11 and a body 12 attached to the front side.

  The base 11 is provided with an insertion hole (not shown) penetrating the base 11 in the front-rear direction, and the fixing screw 15 (see FIG. 4) passed through the insertion hole is screwed into the wall 200, whereby the base 11 is It is fixed to the wall 200. As shown in FIGS. 1B and 2, a power cable CB <b> 1 for receiving power supply from an external power source is introduced into the charging device main body 10 on the back surface of the base 11 (attachment surface to the wall 200). A long-hole-shaped knockout portion 16 that forms a pull-in portion is formed. Here, when the power supply cable CB1 wired on the back side of the wall 200 is introduced into the main body from the back surface (attachment surface to the wall 200) of the charging device main body 10, the installer removes the knockout portion 16 of the base 11. Thus, a through-hole penetrating the base 11 in the thickness direction is formed. The contractor overlaps a hole (not shown) provided in the wall 200 to pull out the power cable CB1 wired on the back side of the wall to the front side of the wall 200 and a through hole formed by removing the knockout portion 16. In this way, after the base 11 is attached to the wall 200, the power cable CB1 is drawn into the charging device main body 10 from the through hole and connected to the terminal block TB1. A packing 17 is attached to the back surface of the base 11 so as to surround the knock-out portion 16 so as to close a gap between the back surface of the base 11 and the wall 200, and the inside of the through hole formed by removing the knock-out portion 16. It is difficult for water to enter. Here, a pull-in portion provided on the attachment surface (surface attached to the wall 200) of the charging apparatus body 10 is configured from the knockout portion 16 provided in the base 11.

  On the other hand, the body 12 holds circuit components such as the above-described charging control unit 2, display unit 3, operation input unit 4, relay R1, zero-phase current transformer 5, terminal blocks TB1 and TB2, and the body 12 Is attached to the base 11 by an appropriate method. On the front surface of the body 12, a plurality of (for example, three) light emitting diodes LD1, LD2, and LD3 that constitute the display unit 3, and a plurality of (for example, two) operation switches SW1 and SW2 that constitute the operation input unit 4. Are arranged side by side in the vertical direction.

  In the lower part of the body 12, there is provided a storage recess 13 that is open to the front and lower sides in the center in the left-right direction and into which a part of the charging connector CN1 is inserted. A cylindrical connecting portion 111 provided at the tip of the charging connector CN1 is inserted into the housing recess 13 and a connector holding body 14 that holds the connecting portion 111 is provided. The connector holder 14 is a synthetic resin molded product and is formed in a cylindrical shape with one end closed, and holds the charging connector CN1 in a state where the tip end side of the connecting portion 111 is inserted into the cylinder.

  As shown in FIGS. 1B and 3, a knock-out portion 18 is formed on the left side of the housing recess 13 on the bottom surface of the body 12 (the bottom surface when attached to the wall 200). The knockout portion 18 is configured by concentrically arranging round-hole shaped knockout portions 18a and 18b having different diameters. One knockout portion 18a is formed to a size that allows attachment of a PF tube connector to which, for example, a flexible resin tube (PF tube) of φ16 is connected. The other knockout portion 18b is formed to a size that allows attachment of a PF tube connector to which, for example, a φ22 synthetic resin flexible conduit is connected. Here, when the power supply cable CB1 is introduced from the bottom surface of the charging apparatus body 10, the installer removes one of the knockout portions 18a and 18b to form a through hole, and attaches a PF tube connector to the through hole. Thereafter, the PF pipe is connected to the PF pipe connector. Thereafter, the installer passes the power cable CB1 inside the PF pipe, draws the power cable CB1 into the charging apparatus main body 10 through the PF pipe, and then connects the power cable CB1 to the terminal block TB1. Here, the knock-out portion 18 provided on the lower surface of the body 12 constitutes a pull-in portion provided on the bottom surface of the charging device main body 10 (the lower surface when attached to the wall 200).

  Further, an insertion hole for passing the charging cable CB <b> 2 is provided on the right side of the housing recess 13 on the bottom surface of the body 12. The charging cable CB2 is introduced into the charging device main body 10 through the insertion hole and connected to the terminal block TB2 held in the body 12.

  The charging device 1 has the above-described configuration, and the charging device body 10 is installed on a building wall 200 as shown in FIG. FIG. 6 shows an example in which the power cable CB <b> 1 is constructed using a pull-in portion (that is, the knockout portion 18) provided on the bottom surface of the charging apparatus body 10. On the wall 200, a connection box 201 for relaying and connecting a power cable 203 to a load (for example, a garden lamp 202) installed outside the building to a branch wiring from a distribution board (not shown) in the house. Is provided. A flexible conduit 30 for passing the power cable CB 1 is installed between the connection box 201 and the charging device body 10, and the power cable CB 1 passed through the flexible conduit 30 is introduced into the charging device body 10. Is done. Then, the power supply cable CB1 drawn into the charging apparatus main body 10 is connected to the terminal block TB1, whereby power is supplied to the charging apparatus 1.

  Here, the operation of the charging apparatus 1 will be described. When the charging device 1 is not used for charging the electric vehicle 100, the charging connector CN1 is held by the connector holder 14. If the charging connector CN1 is left on the ground during non-charging, the charging connector CN1 and the charging cable CB2 may be stepped on by a person or a vehicle. However, in this embodiment, the user holds the charging connector CN1 during non-charging. It can be held by the body 14. Therefore, the possibility that the charging connector CN1 and the charging cable CB2 are stepped on by a person or a vehicle can be reduced.

  On the other hand, when the user charges the electric vehicle 100 using the charging device 1, the charging connector CN <b> 1 removed from the connector holder 14 is first connected to the charging connector CN <b> 2 of the electric vehicle 100. After that, when preparation for charging is completed on the electric vehicle 100 side, a charging start signal is output from the charging circuit 101 to the charging control unit 2, and the charging control unit 2 switches the relay R1 from the open state to the closed state, Electric power is supplied to the electric vehicle 100. At this time, in the electric vehicle 100, the charging circuit 101 charges the battery 102, and when the charging of the battery 102 is completed, a charging completion signal is output to the charging control unit 2. When a charging completion signal is input from the charging circuit 101 of the electric vehicle 100, the charging control unit 2 switches the relay R1 from the closed state to the open state, stops the power supply to the electric vehicle 100, and displays the display unit 3 To inform the user that charging is complete. Further, when a leakage occurs in the electric circuit on the electric vehicle side during charging, the charging control unit 2 can detect the occurrence of the leakage based on the output of the zero-phase current transformer 5, and when the leakage is detected, the relay R1 is turned off. By opening the pole, the power supply to the electric vehicle 100 is cut off. When the charging device 1 performs the operation as described above, the electric vehicle 100 is charged.

  As described above, the charging device 1 of the present embodiment includes the charging device body 10 attached to the wall 200 of the building. The charging device body 10 includes a charging cable CB2 having a charging connector CN1 that is detachably connected to the electric vehicle 100, and a charging control unit 2 that controls charging to the electric vehicle 100 to which the charging connector CN1 is connected. It has been. And in the charging device main body 10, the drawing-in part (knock-out part) for drawing in the power supply cable CB1 for receiving electric power supply to an inside from the attachment surface to the wall 200 and at least one surface other than an attachment surface 16, 18) are provided respectively.

  As a result, when the power cable CB1 exposed and wired on the wall 200 of the building in the existing house is drawn into the charging device main body 10, the power cable CB1 is passed through the lead-in portion (knockout portion 18) formed on the surface other than the mounting surface. Is drawn into the charging device main body 10. In addition, when the power cable CB1 wired on the back of the wall in a newly built house is pulled into the charging device main body 10, the power cable CB1 pulled out from the hole provided in the wall to the front side is a lead-in portion (knockout) formed on the mounting surface. Part 16) and pulled into the charging device body 10. Therefore, the charging device body can be used for both the exposed wiring in the case of an existing house and the embedded wiring in the case of a new house. Therefore, the charging device for an electric vehicle can be easily used in both an existing house and a new house. Can be constructed.

  And in this embodiment, the drawing-in part is each provided in the bottom face and attachment surface which face the lower side in the state in which the charging device main body 10 was attached to the wall.

  Thereby, when the charging device 1 is constructed in a new house, the power cable wired on the back of the wall is drawn into the charging device main body 10 through the drawing portion provided on the mounting surface. When the charging device 1 is installed in an existing house, the power cable exposed on the wall is drawn into the charging device main body 10 through a drawing portion provided on the bottom surface. Therefore, the charging device body can be used for both the exposed wiring in the case of an existing house and the embedded wiring in the case of a new house. Therefore, the charging device for an electric vehicle can be easily used in both an existing house and a new house. Can be constructed.

  In the present embodiment, the lead-in portion is provided on the attachment surface and the bottom surface of the charging apparatus body 10, but the lead-in portion may be provided on at least one surface other than the attachment surface and the attachment surface. A lead-in part may be provided on the side or front surface other than the above. Further, the number of the drawing-in portions is not limited to two, and the drawing-in portions may be provided on the mounting surface and a plurality of surfaces other than the mounting surface.

  Moreover, in this embodiment, each drawing-in part is comprised by the knockout parts 16 and 18 which form the hole for introduction of power supply cable CB1 by removing.

  Thus, since the lead-in part is constituted by the knock-out parts 16 and 18, the introduction hole for the power supply cable CB1 is formed by removing the knock-out part 16 or 18 only from the lead-in part on the side necessary for wiring. Therefore, leaving the unnecessary knockout part on the side makes it difficult for rainwater to enter the charging device body 10 and improves the waterproof performance.

  In the above-described embodiment, the pull-in portion is configured by the knockout portions 16 and 18, but if the power cable CB1 can be pulled in, a hole through which the power cable CB1 passes may be used.

  In the above embodiment, the charging device 1 is described as an example in which the charging device 1 is installed on the wall 200 of a general house, but it goes without saying that it may be installed in a building or commercial facility other than the house.

DESCRIPTION OF SYMBOLS 1 Charging apparatus for electric vehicles 2 Charging control part 10 Charging apparatus main body 16 Knockout part (retraction part)
18, 18a, 18b Knockout part (retraction part)
100 Electric vehicle 200 Wall CB1 Power cable CB2 Charging cable CN1 Charging connector

Claims (3)

It has a charger body that can be attached to the wall of the building,
The charging device main body is provided with a charging cable having a charging connector that is detachably connected to the electric vehicle, and a charging control unit that controls charging to the electric vehicle to which the charging connector is connected,
In the charging device main body, a lead-in portion for drawing a power cable for receiving power supply from an external power source is provided on each of the mounting surface to the wall and at least one surface other than the mounting surface. The charging device for electric vehicles characterized by the above-mentioned.   2. The charging device for an electric vehicle according to claim 1, wherein the pull-in portion is provided on each of a bottom surface facing the lower side and the mounting surface when the charging device body is mounted on the wall.   3. The charging device for an electric vehicle according to claim 1, wherein the pull-in portion is provided with a knockout portion that is removed to form a hole for introducing the power cable. 4.

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