JP2015089250A - Vehicle charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique which can perform a charging end determination, as a guide for the charging end determination, by freely and optionally combining the full charge of a vehicle side main battery, the connection release of a charger side charging connector and vehicle, and the fitting of a charging connector and charging connector reception part.SOLUTION: A vehicle charger includes: vehicle connection detecting means 36 for detecting the connection state of a charging connector 2 and a vehicle 3; fitting detection means 37 for detecting the fitting of the charging connector 2 and a charging connector receiving part 4; and first count means 39 for counting the elapsed time after release of connection of the charging connector 2 and vehicle 3 is detected by the vehicle connection detecting means 36. The vehicle charger further includes charging end determination means 40 for determining the charging end by regarding the time when the fitting detection means 37 detects the fitting of the charging connector 2 and charging connector receiving part 4, or the time when the count time by the first count means 39 exceeds a threshold, as the charging end time.

Description

  The present invention relates to a vehicle charging device.

  In a vehicle charging apparatus installed in a public space, there is a demand for a system that receives charging determination and ends charging or transmits charging end data.

  For example, in Patent Literature 1, after detecting that the connection between the charging connector on the charging device side and the vehicle is released, or when the main battery on the vehicle side is sufficiently charged and charging is completed, A system is disclosed in which, when a power supply request is stopped, power supply is stopped, and charging is determined by determining the end of charging (Patent Document 1).

However, in the technique of Patent Document 1, since the motivation to return the used charging connector to the correct position is not particularly evoked, it is often left without being returned to the charging connector receiving portion formed in the charging device. There is a problem that the administrator cannot accurately grasp the usage status of the charging device.
In addition, there is a problem that it is not possible to respond to the demand for changing the timing of charging termination processing depending on the expiration of charging or the return state of the charging connector according to the installation location and the number of installed charging devices.

JP 2007-228695 A

  The object of the present invention is to solve the above-mentioned problems, and according to the needs of the parking lot operator, a charge termination determination based on the disconnection between the charging connector on the charging device side and the vehicle, and the charging connector and the charging connector receiving portion. It is intended to provide a technology capable of performing the charging end determination by freely combining the charging end determination with the fitting as a guide.

  The vehicle charging device of the present invention made to solve the above-mentioned problem is a charging that receives a charging connector when not in use by charging the vehicle by connecting a charging connector provided at the tip of a charging cable to a power feeding port of the vehicle. A vehicle charging device including a connector receiving portion, vehicle connection detecting means for detecting a connection state between the charging connector and the vehicle, and a fitting detecting means for detecting fitting between the charging connector and the charging connector receiving portion, After the vehicle connection detecting means detects the disconnection between the charging connector and the vehicle, the vehicle has a first counting means for counting the elapsed time, and the fitting detecting means detects the fitting between the charging connector and the charging connector receiving portion. When detecting, when the counting time by the first counting means exceeds a threshold value, it is provided with charging end determining means for determining whether charging is ended when any of them is regarded as charging end time. A.

  According to a second aspect of the present invention, in the vehicle charging device according to the first aspect, the vehicle charging device includes a charge expiration detection means for detecting the expiration of the charge of the vehicle-side main battery, and after the charge expiration detection means detects the expiration of the charge. And a second counting means for counting the elapsed time, and the charging end judging means is configured to count time by the first counting means when the fitting detecting means detects the fitting between the charging connector and the charging connector receiving portion. When the threshold value is exceeded, the charging end determination is performed by regarding any of the counting times by the second counting means exceeding the threshold value as the end of charging.

  According to a third aspect of the present invention, in the vehicle charging device according to the second aspect, the charging expiration detection means detects the charging expiration based on the charging current or the charging control signal, and the vehicle connection detection means detects the fitting of the charging connector. The release of the connection between the charging connector and the vehicle is detected based on the combination information or the charging control signal.

  According to a fourth aspect of the present invention, in the vehicle charging apparatus according to the second aspect, the second counting means stops counting at the same time as the first counting means starts counting.

  In the vehicle charging device according to the present invention, the vehicle charging device is provided with a charging connector receiving portion for charging the vehicle by connecting a charging connector provided at the tip of the charging cable to the power supply port of the vehicle and receiving the charging connector when not in use. A vehicle connection detecting means for detecting a connection state between the charging connector and the vehicle; a fitting detecting means for detecting a fitting between the charging connector and the charging connector receiving portion; and the vehicle connection detecting means being a charging connector. First count means for counting the elapsed time after detecting disconnection from the vehicle is further provided. Further, when the fitting detection means detects the fitting between the charging connector and the charging connector receiving portion, the first counting means is provided. When the counting time exceeds the threshold value, it is provided with a charging end determination means that determines whether or not the charging is ended and the administrator determines the charging end determination as necessary. Is freely selected from either the connection between the charging connector on the charging device and the vehicle, or the fitting between the charging connector and the charging connector receiving portion, and the end timing of charging processing and the transmission of charging end data Timing can be determined.

It is sectional drawing of a charging connector and a charging connector receiving part. It is explanatory drawing of 1st Embodiment. It is circuit explanatory drawing when a charging connector is in a normal fitting state with the electric power feeding port of a vehicle. It is a flowchart of an Example. It is explanatory drawing of an Example. FIG. 6 is an explanatory diagram of a second embodiment.

  Preferred embodiments of the present invention are shown below.

(Embodiment 1)
The vehicle charging device of the present embodiment is for charging the vehicle 3 by connecting the charging connector 2 provided at the tip of the charging cable 1 to the power feeding port of the vehicle 3. The charging connector receiving part 4 which fits and holds the charging connector 2 at the time is provided.

  As shown in FIG. 1, the charging connector 2 has an electrode plug 5, a fitting plug 6, a ground plug 7, and a charging control signal plug 8 as connecting plugs at a charging terminal portion 17 formed at the tip. Yes. These charging plugs 5, 6, 7, and 8 are connected to plug brackets 9, 10, 11, and 12 formed at the power supply port of the vehicle 3 when charging, as shown in FIG. Returning to the charging connector receiving part 4, as shown in FIG. 2, it is connected to the plug metal fittings 13, 14, 15, 16 formed in the charging connector receiving part 4.

  Further, as shown in FIG. 1, a locking claw portion 18 is provided above the charging terminal portion 17 of the charging connector 2. When the charging connector 2 is attached or detached, the locking claw portion 18 presses the operation button 19, and its tip end portion is lifted to the upper moving position, so that the power supply port of the vehicle 3 or the charging connector receiving portion 4 is connected. In a state in which the locked state is released and the vehicle 3 is properly fitted in the power supply port or the charging connector receiving portion 4 (normal fitting), the locked state is returned from the moving position to the fixed position. Is.

  As shown in FIG. 2, an electric path 20 that connects between the fitting plug 6 and the ground plug 7 is formed inside the charging connector 2. In the electric circuit 20, a resistor R <b> 2 and a resistor R <b> 3 are arranged in series, and an opening / closing part 21 that is linked to R <b> 3 and the operation button 19 is arranged in parallel. The opening / closing portion 21 moves in conjunction with the locking claw portion 18 and is in a closed state when the operation button 19 is not pressed or when the locking claw portion 18 is in a fixed position.

  In the charging connector receiving portion 4, a conductive portion 22 that connects between the fitting plug 6 and the ground plug 7 is formed. The conductive portion 22 is provided with a resistor R4. The conductive portion 22 may not be connected to the ground plug 7 but may be grounded at the charging connector receiving portion 4.

  The charging cable 1 includes a power supply line 24 connected to the electrode plug 5, a fitting line 25 connected to the fitting plug 6, a ground line 26 connected to the ground plug 7, and a charge control signal line 27 connected to the charge control signal plug 8. Is built-in.

The charging device main body 28 includes a charging control unit 29 that opens and closes the relay 41 by a charging control signal from the charging control signal line 27 and performs charging control, and a voltage applying unit that applies a fitting detection voltage to the fitting line 25. 30 and a fitting determination unit 31 that detects the potential of the fitting line 25 and outputs the fitting state of the charging connector 2 to the charging control unit 29 as fitting information based on the detected potential.
Note that a detection voltage lower than the voltage when the vehicle is connected is constantly applied from the voltage application unit 30 to the fitting line 25.

  A resistor R <b> 1 is disposed on the electric circuit 32 that connects the voltage application unit 30 and the fitting wire 25.

  As shown in FIG. 3, a connection circuit including resistors R <b> 5 and R <b> 6 is formed on the vehicle 3 side, and a predetermined detection voltage is constantly applied from the application unit 34. The detection unit 33 provided in the vehicle 3 determines the connection between the charging connector 2 and the vehicle 3 by detecting the potential of the plug fitting 10 at the power supply port.

  The charging control unit 29 includes a charging expiration detection unit 35 that detects the expiration of charging of the vehicle-side main battery, a vehicle connection detection unit 36 that determines a connection state between the charging connector 2 and the vehicle 3, and the charging connector 2 and the charging connector. The fitting detection means 37 for determining the fitting with the receiving portion 4, the second counting means 38 that starts counting the elapsed time after the charging expiration detection means 35 detects the charging expiration, and the vehicle connection detection means 36. After detecting the disconnection between the charging connector and the vehicle, the first counting means 39 for stopping the counting of the second counting means 38 and newly counting the elapsed time and the fitting detecting means 37 are charged. When the fitting between the connector and the charging connector receiving part is detected, when the counting time by the first counting means exceeds the threshold, when the counting time by the second counting means exceeds the threshold And a charging end determining unit 40 for charging termination determination is regarded either as at the end of charge.

  The charging expiration detection unit 35 detects the charging expiration based on the charging current, and the vehicle connection detection unit 36 determines the charging connector 2 and the vehicle 3 based on the fitting information of the charging connector 2 obtained from the fitting determination unit 31. The fitting detection means 37 also performs fitting between the charging connector 2 and the charging connector receiving portion 4 based on the fitting information of the charging connector 2 obtained from the fitting determining portion 31. judge.

  In addition, when the vehicle connection detection unit 36 determines the connection between the charging connector 2 and the vehicle, the charging control unit 29 includes an application stop instruction signal unit that instructs the voltage application unit 30 to stop the voltage application, and a charging connector. When it is determined that the connection between the vehicle 2 and the vehicle 3 is released, a voltage application restarting unit that instructs the voltage application unit 30 to restart the voltage application is provided.

  Hereinafter, the flow in which the fitting determination unit 31 determines the fitting state of the charging connector 2 will be described.

  Determination of a fitting state is performed based on the fitting determination data previously recorded on the fitting determination part 31. FIG. In the present embodiment, the fitting state is determined based on the fitting determination data shown in Table 1.

“Connector receiving part and normal fitting” state The charging connector 2 is normally fitted to the charging connector receiving part 4. In this case, since the locking claw portion 18 is in a fixed position and the opening / closing portion 21 is closed, the fitting line 25 has a potential (first potential) corresponding to the combined resistance of R1, R2, and R4. ) Occurs. Thereby, the fitting determination unit 31 determines that the fitting is normal, and the charging control unit 29 can externally output that the charging connector has been returned to normal by communication means (not shown).

“Semi-fitting with connector receiving part” state The charging connector 2 is inserted into the charging connector receiving part 4 and the fitting plug 6 and the ground plug 7 are connected to the conductive part 22 but the locking claw part 18 is charged. It is a half-fitted state that is not engaged with the locking claw engaging portion formed in the connector receiving portion 4. In this case, as in the case where the operation button 19 is pressed, the distal end portion of the locking claw portion 18 remains lifted to the upper movement position, and the opening / closing portion 21 is in the open state as shown in FIG. Therefore, a potential (second potential) corresponding to the combined resistance of R1, R2, R3, and R4 is generated in the fitting line 25. Thereby, the fitting determination unit 31 determines that the fitting is half-fitting, and the charging control unit 29 can externally output that the charging connector is half-fitting and display an alarm by communication means or the like.

“Incomplete insertion in connector receiving portion” state The charging connector 2 is inserted into the charging connector receiving portion 4, but the conductive portion 22 that connects between the fitting plug 6 and the ground plug 7 is not connected. When the claw portion 18 is in a fixed position, the fitting line 25 generates a (third potential) corresponding to the combined resistance of R1 and R2.
In such a case, when the operation button 19 is pressed, a potential (fourth potential) corresponding to the combined resistance of R1, R2, and R3 is generated in the fitting line 25. In any case, the fitting determination unit 31 determines that the plug is incomplete, and the charging control unit 29 can externally output that the charging connector is incomplete plug-in and display an alarm by communication means or the like. .

  The state of the charging connector 2 can be accurately grasped by the charging device based on the first to fourth potentials detected by the fitting determination unit 31 and can be applied to warning display, charging control, remote monitoring, and the like. It is. The first to fourth potentials are different from the fifth and sixth potentials when connected to the vehicle side described below.

"Normally fitting with power supply port of vehicle" state The charging connector 2 is normally fitted with the power supply port of the vehicle 3. A predetermined voltage is applied to the fitting wire 25 from the application unit 34 on the vehicle side. In this case, since the locking claw portion 18 is in a fixed position and the opening / closing portion 21 is closed, the fitting line 25 has a potential (fifth potential) corresponding to the combined resistance of R2, R5, and R6. ) Occurs. Thereby, the fitting determination unit 31 can determine that the vehicle 3 has been normally fitted, and the charging control unit 29 can externally output that the charging connector 2 has been normally fitted to the vehicle 3 by communication means or the like. As described above, the fitting determination unit 31 can also determine whether the charging connector is connected to the charging connector receiving unit 4 or to the power supply port of the vehicle 3.

“Half-fitting with vehicle power supply port” state Although the charging connector 2 is inserted into the power supply port of the vehicle 3, the locking claw engaging portion 18 is formed on the power supply port of the vehicle 3. In the non-engaged half-fitted state, the distal end portion of the locking claw portion 18 remains lifted to the upper movement position as in the case where the operation button 19 is pressed, and the opening / closing portion 21 is opened. Therefore, the fitting line 25 generates a potential (sixth potential) corresponding to the combined resistance by the combination of R2, R3, R5, and R6. As a result, the fitting determination unit 31 determines that the vehicle is incompletely inserted, and the charging control unit 29 externally outputs that the charging connector 2 is incompletely inserted with the vehicle 3 through a communication means or the like and displays an alarm display. can do.

  Furthermore, it can be determined that the connection between the charging connector 2 and the vehicle 3 is released when the potential detected by the fitting determination unit 31 has changed from the fifth potential and the sixth potential to zero potential.

  Hereinafter, an example of charge termination determination in the present embodiment will be described using the flow of FIG.

(ST1) When the charging current flowing through the power supply line 24 becomes a predetermined value or less, the charging expiration detection means 35 determines the charging expiration.
(ST2) When it is determined that the charging has expired, the second counting means 38 starts counting the elapsed time after the charging has expired.
(ST3) Subsequently, as the fitting information of the fitting determination unit 31, the vehicle connection detecting means 36 receives the fact that the potential of the fitting line 25 has changed from the fifth potential and the sixth potential to zero potential. The connection release between the charging connector 2 and the vehicle 3 is determined.
(ST4) If the connection release determination is not made in ST3, the second counting means 38 continues counting the elapsed time after the expiration of charging.
(ST5) If connection release is still not determined within a second set time (for example, 20 minutes) predetermined by the administrator, the charge end determination is performed after the set time elapses, The charging end data is transmitted to the user's portable terminal or the like. Here, when the charging end determination (second end determination) is made, the charging connector 2 remains in contact with the vehicle 3, but the vehicle is promptly moved by transmitting the charging end data. be able to.
(ST6) When the connection release determination is made in ST3, the first count unit 39 stops the counting of the second count unit 38, and starts counting the elapsed time after the connection release determination.
(ST7) As the fitting information of the fitting determining unit 31, the fitting detecting unit 37 receives the fact that the potential of the fitting wire 25 has become the first potential, and the charging connector 2 and the charging connector receiving unit 4 Determine the fit.
(ST8) If the fitting between the charging connector 2 and the charging connector receiving portion 4 is not determined within a first set time (for example, 5 minutes) determined in advance by the administrator in ST7, the time elapses. Charge end determination (first end determination) is performed, and charging end processing is performed.
Here, when the charging end determination is made, the charging connector 2 remains disconnected from the charging connector receiving portion 4, but a warning is displayed on the charging device main body 28, and the charging connector 2 is connected to the charging connector. It can be prompted to return to the receiving unit 4.
(ST9) When the fitting detection means 37 determines the fitting between the charging connector 2 and the charging connector receiving portion 4, it immediately determines the end of charging (third end determination) The charging end data is transmitted to the portable terminal or the like. In addition, when the potential of the fitting line 25 is not the first potential but the second to fourth potentials according to the fitting information of the fitting determination unit 31, the charging control unit 29 is connected to the charging device main body 28. A warning can be displayed to alert the user that the charging connector 2 is half-fitted or incompletely inserted.

Even when the connection release determination is made, the counting of the first counting means 39 may be started while the counting of the second counting means 38 is continued. In this case, the charging end determination unit 40 may perform the charging end determination when the counting time by any of the counting units exceeds the set time.
With such a setting, even if the charging connector is disconnected from the vehicle just before the end of charging by the second counting means, the end of charging can be determined early.

In the case of the present embodiment, as shown in FIG. 5, the administrator can set various timings for charging termination processing according to the installation environment of the charging device.
For example, in the case of (a), charging may be terminated (A), or charging termination processing may be performed at a second termination determination (B) after a predetermined time has elapsed since the expiration of charging. In the case of (b), it may be when the charging connector is removed from the vehicle (C), or the charging termination process may be performed at the first termination determination (D) after a predetermined time has elapsed after removal from the vehicle. . Further, in the case of (c), the charging end processing may be performed only when the charging connector is returned (E).
Note that the amount to be charged may be increased or decreased depending on the timing of charging termination.

  The user can immediately remove the charging connector 2 from the vehicle and return it to the charging connector receiving portion 4 after the charging is completed. By setting it as such a system structure, the motivation to return the charge connector after use to the correct position can be aroused. Note that, at the longest, it is determined that the charging is finished after a predetermined time after the expiration of charging, and excessive charging is avoided.

(Embodiment 2)
Although the basic form is the same as that of the first embodiment, in the present embodiment, as shown in FIG. 6, the charge connector receiving part 4 has a limit switch 23 as a detection part for mechanically detecting the approach of the charge connector 2. The fitting detection means 37 detects the fitting between the charging connector and the charging connector receiving portion based on the operation of the limit switch 23 and outputs the detected fitting to the charging control portion 29.
Further, the charge expiration detection means 35 and the vehicle connection detection means 36 are based on a charge control signal (hereinafter, a CPLT signal) generated by the CPLT circuit 42 of the charge control unit 29, and the connection between the charge expiration and the charging connector and the vehicle is released. Is detected.

  Here, the CPLT circuit is designed so that the potential of the CPLT signal (the potential at point A in FIG. 6, hereinafter, the CPLT potential) in FIG. 6 is 12 V when the charging cable 1 is not connected to the vehicle 3. The cable 1 is a “mode 2 type” vehicle as defined in the standard of charge control (before charging is started, while the CPLT signal is transmitted and received between the vehicle side charging start control circuit and the vehicle charging device side, When the connection state is checked, the CPLT potential is 9V due to the resistance of the charging unit on the vehicle side. When the charging control unit 29 detects that the CPLT potential is 9V, it detects that the mode 2 type vehicle is connected, and then the charging control unit 29 oscillates the CPLT signal, so the CPLT potential oscillates at 9V. It becomes the state of. As a result, a pulsed 9V CPLT signal enters the vehicle, and the charge control circuit on the vehicle turns on the power reception permission switch. Here, when a lithium ion battery or the like is mounted as a vehicle-mounted battery, the CPLT potential changes to 6 V oscillation due to the resistance Rb of the vehicle-side charge control circuit, and the charge control unit indicates that the vehicle is ready to receive power. 29 recognizes, outputs an ON signal to the relay 41, controls the closing of the charging circuit, applies a charging voltage of 200V as power supply to the on-vehicle battery, and starts charging (hereinafter referred to as mode 2 type charging control). ).

  Hereinafter, an example of charge termination determination in the present embodiment will be described using the flow of FIG.

(ST1) In response to the change in the CPLT potential of the charge control signal line 27 from 6V to 9V, the charge expiration detection means 35 determines the expiration of the charge.
(ST2) When it is determined that the charging has expired, the second counting means 38 starts counting the elapsed time after the charging has expired.
(ST3) Subsequently, in response to the change in the CPLT potential from 9V to 12V, the vehicle connection detecting means 36 determines the release of the connection between the charging connector 2 and the vehicle 3.
(ST4) If the connection release determination is not made in ST3, the second counting means 38 continues counting the elapsed time after the expiration of charging.
(ST5) If connection release is still not determined within a second set time (for example, 20 minutes) predetermined by the administrator, the charge end determination is performed after the set time elapses, The charging end data is transmitted to the user's portable terminal or the like.
Here, when the charging end determination is made, the charging connector 2 remains connected to the vehicle 3, but prompt vehicle movement can be urged by transmitting the charging end data.
(ST6) When the connection release determination is made in ST3, the first count unit 39 stops the counting of the second count unit 38, and starts counting the elapsed time after the connection release determination.
(ST7) Upon receiving the operation of the limit switch 23 that mechanically detects the approach of the charging connector 2, the fitting detection means 37 determines the fitting between the charging connector 2 and the charging connector receiving portion 4.
(ST8) If the fitting between the charging connector 2 and the charging connector receiving portion 4 is not determined within a first set time (for example, 5 minutes) determined in advance by the administrator in ST7, the time elapses. Charge end determination is performed, and billing end processing is performed.
Here, when the charging end determination is made, the charging connector 2 remains disconnected from the charging connector receiving portion 4, but a warning is displayed on the charging device main body 28, and the charging connector 2 is connected to the charging connector. It can be prompted to return to the receiving unit 4.
(ST9) When the fitting detection means 37 determines the fitting between the charging connector 2 and the charging connector receiving portion 4, it immediately determines the end of charging and ends charging or charging the user's mobile terminal or the like. Send data.

  Note that, similarly to the first embodiment, even when the connection release determination is made, the count of the first count means 39 may be started while the count of the second count means 38 is continued. In this case, the charging end determination unit 40 may perform the charging end determination when the counting time by any of the counting units exceeds the set time.

DESCRIPTION OF SYMBOLS 1 Charging cable 2 Charging connector 3 Vehicle 4 Charging connector receiving part 5 Electrode plug 6 Fitting plug 7 Grounding plug 8 Charging control signal plug 9, 10, 11, 12 Plug receiving brackets 13, 14, 15, 16 formed on the vehicle Plug receiving bracket 17 formed at the charging connector receiving portion Charging terminal portion 18 Locking claw portion 19 Operation button 20 Electric path 21 Opening / closing portion 22 Conductive portion 23 Limit switch (detection portion)
24 Power line 25 Fitting line 26 Ground line 27 Charging control signal line 28 Charging device main body 29 Charging control unit 30 Voltage application unit 31 Fitting determination unit 32 Electric path 33 Charging connector connection detection circuit 34 Application unit 35 Charging expiration detection means 36 Vehicle Connection detection means 37 Fitting detection means 38 Second count means 39 First count means 40 Charging end determination reference selection means 41 Relay 42 CPLT circuit

Claims (4)

  A vehicle charging device having a charging connector receiving portion for charging a vehicle by connecting a charging connector provided at a tip of a charging cable to a power supply port of the vehicle and receiving the charging connector when not in use, the charging connector and the vehicle Vehicle connection detection means for detecting the connection state between the charging connector and the charging connector receiving portion, and after the vehicle connection detection means detects the disconnection between the charging connector and the vehicle. The first counting means for counting the elapsed time, and when the fitting detection means detects the fitting between the charging connector and the charging connector receiving portion, the counting time by the first counting means exceeds a threshold value. A vehicle charging device comprising charging end determination means for determining whether or not charging is completed at the end of charging. The vehicle charging device further includes charge expiration detection means for detecting the expiration of charging of the vehicle-side main battery, and second count means for counting an elapsed time after the charge expiration detection means detects the expiration of charge,
When the fitting detection means detects the fitting between the charging connector and the charging connector receiving portion, the charging end judging means determines the counting time by the second counting means when the counting time by the first counting means exceeds the threshold. The vehicle charging device according to claim 1, wherein the charging end determination is performed by regarding any of the times exceeding the charging end as charging end time.   The charging expiration detecting means detects charging expiration based on the charging current or the charging control signal, and the vehicle connection detecting means releases the connection between the charging connector and the vehicle based on the fitting connector fitting information or the charging control signal. The vehicle charging device according to claim 2, wherein the vehicle charging device is detected.   3. The vehicle charging device according to claim 2, wherein the second counting means stops counting at the same time as the first counting means starts counting.