JP2011120386A - Apparatus for control of charging electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for control of charging an electric vehicle, capable of safely and efficiently charging a driving battery, while a power receiving side coil is moved down. <P>SOLUTION: The control apparatus is configured such that if a shift position determinator 22 determines that a shift position of an automatic transmission 5 is at a parking position, a descent permitting unit 23 permits descent of the power receiving side coil 11, and a drive controller 24 drives an elevator 12 in response to a descent operation signal outputted from an operation signal output unit 21 and moves down the power receiving side coil 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a charging control device for an electric vehicle including a battery (secondary battery), and more particularly to a charging control device that charges a battery in a non-contact manner using electromagnetic induction between coils.

  In recent years, many electric vehicles such as electric vehicles (BEV) and plug-in hybrid vehicles (PHEV) have been put into practical use. A driving battery mounted on such an electric vehicle is generally charged by electric power supplied from an external commercial power supply via a charging cable connected to a charging port of the vehicle body. Further, the charging cable is often attached and detached at that time by a user (driver) of the electric vehicle.

  This attachment / detachment work of the charging cable is troublesome for the user. Some charging cables are relatively heavy and difficult to handle, for example, quick charging cables. For example, when the charging facility is installed outdoors such as a parking lot of a commercial facility, the charging cable is often contaminated with dust or the like. As described above, since the attaching / detaching operation of the charging cable may be a burden on the user, it has been conventionally desired to facilitate the charging operation.

  In order to solve such a problem, development of a charging device for charging a battery in a contactless manner has been underway. For example, in a state where the power receiving side coil mounted on the electric vehicle is arranged facing the power feeding side coil installed in a parking lot or the like, an alternating current is supplied to the power feeding side coil and the power receiving side coil is made into the power receiving side coil by electromagnetic induction. There is a battery that is charged by generating an alternating current (see, for example, Patent Document 1). By adopting such a charging device, the charging operation can be greatly facilitated.

  Further, such non-contact charging is preferably performed in a state where the interval between the power receiving side coil and the power feeding side coil is narrow. This is because the charging efficiency of the battery can be increased. For example, in Patent Document 1, the power receiving side coil is installed at the bottom of the vehicle body, and the power receiving side coil is provided so as to advance and retreat in the vertical direction, and the battery is charged with the power receiving side coil lowered. A configuration is disclosed. In addition, a power receiving coil is provided in the rear bumper of the vehicle so that it faces the rear of the vehicle, and a power supply coil is provided on the wall of the parking lot, so that the battery is charged with the power receiving coil close to the power supply coil. A configuration that can be made is disclosed.

Japanese Patent Laid-Open No. 5-111168

  In this way, the battery is charged with the power receiving side coil close to the power feeding side coil regardless of whether the power receiving side coil is provided at the bottom of the vehicle body or at the rear, front or side of the vehicle body. can do. However, actually, the power receiving side coil is preferably provided at the bottom of the vehicle body. This is because there is a problem that it is difficult to provide a power receiving side coil at the front, rear, or side of the vehicle body in terms of, for example, design or space. Also, if the power receiving side coil is provided at the front, rear or side of the vehicle, it is necessary to make the power receiving side coil face the power transmitting side coil, so the direction of the vehicle body is limited, and the charging work is complicated. This is because there is a problem that it increases.

  When the power receiving coil is provided at the bottom of the vehicle body, charging efficiency can be increased by charging the battery with the power receiving coil lowered as described above. Of course, even when the power receiving side coil is provided at the rear part, the front part or the side part of the vehicle body, the charging efficiency can be similarly increased.

  However, in such a configuration, for example, there is a problem in that the power receiving side coil is lowered during charging other than during charging. Furthermore, there is a possibility that a problem may occur that the electric vehicle is started with the power receiving side coil lowered while charging is completed. And the present condition is not fully considered about the problem regarding raising / lowering of such a receiving side coil.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a charging control device for an electric vehicle that can efficiently and safely charge a battery in a state where the power receiving side coil is lowered. To do.

  A first aspect of the present invention that solves the above-described problems is a power receiving side coil that is mounted on an electric vehicle including an automatic transmission and a battery, and that is connected to the battery, and an elevating unit that moves the power receiving side coil up and down. And a charging control device for an electric vehicle that charges the battery in a state where the power receiving side coil is lowered by the elevating means and is brought close to a power transmission side coil arranged on the ground side, An operation signal output means for outputting a raising operation signal for instructing raising of the power receiving coil or a lowering action signal for instructing lowering; and a shift position judging means for judging whether or not the shift position of the automatic transmission is a parking position. A lowering permitting means for permitting the lowering of the power receiving coil when the shift position is determined to be a parking position by the shift position determining means, and the lowering permitting means Therefore, when the lowering of the power receiving side coil is permitted, drive control means for lowering the power receiving side coil by the elevating means according to the lowering operation signal output by the operation signal output means, It is in the charge control apparatus of the electric vehicle characterized.

  In the present invention, the power receiving coil can be safely lowered in a state where the electric vehicle is securely parked. Further, the power receiving side coil is not lowered due to an erroneous operation or the like while the electric vehicle is traveling, and the safety of the electric vehicle is increased.

  According to a second aspect of the present invention, there is provided opening / closing means for opening / closing a power supply circuit for supplying electric power to the lifting / lowering means, and the lowering permission means closes the opening / closing means so as to close the power receiving side coil. In the charging control device for an electric vehicle according to the first aspect.

  In the second aspect, the charging control device that can improve the safety of the electric vehicle as described above by adopting the opening / closing operation of the opening / closing means for the permission determination of the lowering operation of the power receiving coil is relatively easy. Can be realized.

  According to a third aspect of the present invention, in the charging control device for an electric vehicle according to the second aspect, the opening / closing means is a relay provided in the power supply circuit.

  In the third aspect, the control unit that controls the driving of the elevating means can be realized relatively easily.

  According to a fourth aspect of the present invention, the drive control means supplies power to the elevating means when the ascending operation signal is output by the operating signal output means and when the descending operation signal is output. The charging control device for an electric vehicle according to any one of the first to third aspects is characterized in that the direction to be switched is switched.

  In the fourth aspect, it is possible to relatively easily and reliably control the raising / lowering of the raising / lowering means, that is, raising or lowering of the power receiving side coil.

  According to a fifth aspect of the present invention, there is provided operation means for performing an operation for instructing raising and lowering of the power receiving side coil, and the operation signal output means is configured to perform the raising operation signal or the lowering action according to the operation of the operation means. In the charging control device for an electric vehicle according to any one of the first to fourth aspects, which outputs a signal.

  In the fifth aspect, the power receiving coil can be raised or lowered based on the will of the user of the electric vehicle.

  According to a sixth aspect of the present invention, in the charging control device for an electric vehicle according to any one of the first to fifth aspects, the power receiving side coil is provided at a bottom portion of the electric vehicle.

  In the sixth aspect, the safety of the electric vehicle is effectively increased. If the power receiving side coil is provided at the bottom of the vehicle, it is difficult to visually confirm the power receiving side coil, and thus the problem of causing the electric vehicle to travel with the power receiving side coil lowered is likely to occur. However, according to this aspect, occurrence of such a problem can be reliably prevented.

  As described above, in the charging control device for an electric vehicle according to the present invention, the power receiving coil can be lowered only when the electric vehicle is parked securely. Therefore, the charging side coil can be safely lowered and the battery can be charged efficiently. In addition, it is possible to reliably prevent the electric vehicle from running while the power receiving side coil is lowered, and an extremely safe electric vehicle can be realized.

It is a schematic block diagram which shows the charge control apparatus which concerns on one Embodiment. It is a functional block diagram which shows schematic structure of the control part of the charging control apparatus which concerns on one Embodiment. It is a figure which shows the specific structure of the control part of the charging control apparatus which concerns on one Embodiment. It is a flowchart which shows the control method of the raising / lowering actuator by the charging control apparatus which concerns on one Embodiment. It is a flowchart which shows the control method of the shift lock mechanism by the charge control apparatus which concerns on one Embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram illustrating a charge control device for an electric vehicle according to an embodiment.
As shown in FIG. 1, an electric vehicle 1, which is an example of an electric vehicle, is equipped with a driving battery (secondary battery) 2, and this battery 2 is electrically connected to a driving motor 4 via an inverter 3. Connected. The drive motor 4 is connected to drive wheels via an automatic transmission 5, and the electric vehicle 1 is driven by the drive force of the drive motor 4. The automatic transmission 5 is provided with a shift lock mechanism (shift lock means) 6 that restricts the movement of the shift lever when the shift lever (not shown) is in the parking position (P range). Yes. Although not shown, the shift lock mechanism 6 has, for example, a coil valve in the vicinity of the shift lever, and regulates the swing of the shift lever by driving the coil valve.

  Further, the electric vehicle 1 is equipped with a charge control device 10 for charging the battery 2. The charging control device 10 employs a non-contact charging method that uses electromagnetic induction between coils with high-frequency power. The charging control apparatus 10 according to the present embodiment includes a power receiving side coil (secondary coil) 11, an elevating actuator 12 that is an elevating means that supports the power receiving side coil 11 so as to be movable up and down in a substantially vertical direction, and each of the actuators that are operated during charging. The control part 20 which controls a structure, for example, the raising / lowering actuator 12 grade | etc., Is provided. The elevating actuator 12 is configured to elevate and lower the power receiving coil 11 using, for example, the rotational force of a motor. Of course, the structure of the raising / lowering actuator 12 is not specifically limited, What is necessary is just to be able to raise / lower the power receiving side coil 11.

  On the other hand, for example, a power supply device 50 provided on the ground side of a parking lot or the like includes a power transmission side coil (primary coil) 51 disposed in the parking space of the electric vehicle 1 and a power supply unit that supplies power to the power transmission side coil 51. 52, a power supply control unit 53 that controls power supply from the power supply unit 52 to the power transmission side coil 51, and an apparatus main body 55 provided with an operation unit 54 for performing an instruction to start charging and the like.

  In such a power supply device 50, the electric vehicle 1 is parked in a predetermined space such as a parking lot so that the power receiving side coil 11 and the power transmitting side coil 51 face each other. When the operation unit 54 of the supply device 50 is operated to start charging, the power supply control unit 53 starts the supply of alternating current from the power supply unit 52 to the power transmission side coil 51. Accordingly, an alternating current is generated in the power receiving coil 11 by electromagnetic induction. The alternating current generated in the power receiving coil 11 is rectified by a rectifier (not shown) and supplied to the battery 2 as a direct current. Thereby, the battery 2 is charged.

  In such non-contact charging by electromagnetic induction, the charging efficiency can be increased by narrowing the interval between the power transmission side coil 51 and the power reception side coil 11. In the present embodiment, the power receiving side coil 11 is provided at the bottom of the vehicle body so that it can be raised and lowered, and the battery 2 is charged in a state where the power receiving side coil 11 is lowered. That is, the charging control device 10 is configured to charge the battery 2 in a state where the interval between the power receiving side coil 11 and the power transmitting side coil 51 is narrowed to increase the charging efficiency.

  And the raising / lowering actuator 12 which raises / lowers the power receiving side coil 11 in this way is appropriately controlled by the control part 20. That is, the control unit 20 controls the elevating actuator 12 to lower the power receiving side coil 11 only when the electric vehicle 1 is parked. This prevents the power receiving side coil 11 from being lowered while the electric vehicle 1 is traveling.

  In the present embodiment, the control unit 20 also controls the operation of the shift lock mechanism 6 when the battery 2 is charged. That is, the shift lock mechanism 6 is controlled by the control unit 20 so as to be unlocked on the condition that the power receiving side coil 11 is raised to a predetermined position after the battery is charged. As a result, the electric vehicle 1 is prevented from starting with the power receiving side coil 11 lowered.

  Here, a schematic configuration of the control unit 20 of the charging control apparatus 10 according to the present embodiment will be described. FIG. 2 is a block diagram illustrating a schematic configuration of a control unit of the charging control apparatus according to the present embodiment.

  As shown in FIG. 2, the control unit 20 of the charge control device 10 includes an operation signal output unit 21, a shift position determination unit 22, a lowering permission unit 23, and a drive control unit 24.

  The operation signal output means 21 outputs an ascending operation signal for instructing ascent of the power receiving coil 11 or a descending operation signal for instructing descending. For example, in the present embodiment, as will be described later, it has an operation switch for performing an operation for instructing the raising and lowering of the power receiving coil 11, and the operation signal output means 21 is an up operation signal or a down operation according to the operation of the operation switch. Output one of the signals.

  The shift position determination means 22 determines whether or not the shift position of the automatic transmission 5 of the electric vehicle 1 is a parking position (P range). The lowering permission unit 23 determines whether to permit the lowering of the power receiving side coil 11 based on the determination result of the shift position determination unit 22. That is, the lowering permission unit 23 permits the lowering of the power receiving coil 11 when the shift position determination unit 22 determines that the shift position is in the P range.

  The drive control unit 24 controls the lift actuator 12 according to the lowering operation signal output by the operation signal output unit 21 when the lowering permission unit 23 permits the lowering of the power receiving side coil 11 to control the power receiving side coil 11. Is lowered. In other words, the drive control unit 24 lowers the power receiving side coil 11 if the lowering permission unit 23 does not permit the lowering of the power receiving side coil 11 even when the operation signal output unit 21 outputs a lowering operation signal. There is nothing.

  In this way, the control unit 20 controls the lifting actuator 12 according to the lowering operation signal only when the electric vehicle 1 is parked in a parking lot or the like and the shift position of the automatic transmission 5 is in the P range. The coil 11 is lowered. For example, when the shift position of the automatic transmission 5 is a drive position (D range) or a neutral position (N range), the user of the electric vehicle 1 operates the operation switch 15 (see FIG. 3). The power receiving side coil 11 does not descend.

  Accordingly, it is possible to prevent the power receiving side coil 11 from being lowered due to an erroneous operation while the electric vehicle 1 is traveling, and when the battery 2 is charged, the power receiving side coil 11 can be safely lowered to efficiently perform the battery operation. 2 can be charged.

  Note that, when the raising operation signal is output by the actuation signal output means 21, the drive control means 24 controls the lifting actuator 12 to raise the power receiving coil 11 regardless of the shift position. Therefore, even if the power receiving side coil 11 is lowered while the electric vehicle 1 is traveling, the power receiving side coil 11 can be immediately raised.

  In the present embodiment, the control unit 20 of the charging control apparatus 10 includes a release signal output unit 25, a power receiving side coil position determination unit 26, a shift lock release permission unit 27, and a shift lock control unit 28.

  The release signal output unit 25 outputs a release signal of the shift lock mechanism 6 in accordance with, for example, a lock release instruction from the driver. Specifically, the release signal output means 25 outputs a release signal of the shift lock mechanism 6 when it is detected that the brake pedal 7 (see FIG. 3) is depressed, for example. The condition for the release signal output means 25 to output the release signal is not particularly limited. For example, the release signal output means 25 may output a release signal when it is detected that the ignition key is on and the brake pedal 7 is depressed.

  The power receiving side coil position determining means 26 determines whether or not the power receiving side coil 11 is raised to a predetermined position (height). The predetermined position here may be a position that does not hinder the traveling of the electric vehicle 1 and is appropriately set for each vehicle type. This predetermined position is particularly preferably set near the rising end of the power receiving coil 11. This is because whether or not the power receiving coil 11 is raised to a predetermined position can be relatively easily determined by, for example, a mechanical sensor.

  The shift lock release permission unit 27 determines whether or not to release the shift lock mechanism 6 based on the determination result of the power receiving side coil position determination unit 26. Specifically, the shift lock release permission unit 27 permits the shift lock mechanism 6 to be released when the power reception side coil position determination unit 26 determines that the power reception side coil 11 has been raised to a predetermined position.

  The shift lock control means 28 controls the operation of the shift lock mechanism 6. Specifically, the shift lock control means 28 controls the shift lock mechanism 6 according to the release signal output from the release signal output means 25 when the shift lock release permission means 27 permits the release of the shift lock mechanism 6. To release.

  That is, the control unit 20 releases the shift lock mechanism 6 when the power receiving side coil 11 is raised to a predetermined position and the brake pedal 7 is depressed. When the shift lock mechanism 6 is released, the shift lever can be moved, and the electric vehicle 1 can be started by moving the shift lever from the P range to the D range.

  As described above, the shift lock mechanism 6 is released according to the position (height) of the power receiving side coil 11 to start the electric vehicle 1 with the power receiving side coil 11 kept lowered. Therefore, the safety of the electric vehicle 1 can be improved.

  The operation signal output means 21, the shift position determination means 22, the lowering permission means 23, the drive control means 24, the release signal output means 25, the power receiving side coil position determination means 26, and the shift lock release permission means constituting the control unit 20 as described above. In the present embodiment, each of the 27 and the shift lock control means 28 is basically composed of various switches.

  Below, the specific structure of the control part 20 of the charge control apparatus 10 which concerns on this embodiment is demonstrated. FIG. 3 is a diagram illustrating a specific configuration of the control unit of the charge control device according to the present embodiment.

  As shown in FIG. 3, the lifting actuator 12 that lifts and lowers the power receiving coil 11 is connected to an auxiliary battery (12V battery) 30 and is driven by electric power supplied from the auxiliary battery 30. ing. Since the lifting actuator 12 is driven when the battery 2 is charged, the auxiliary battery 30 is used as a driving power source.

  The power supply circuit that connects the auxiliary battery 30 and the lift actuator 12 is provided with a relay (opening / closing means) 31 as the lowering permission means 23 and two changeover switches 32 and 33 as the drive control means 24. . The relay 31 is connected to a changeover switch 33 to which a lowering operation signal is input as will be described later.

  Connected to the coil 31 a of the relay 31 is a reed switch (proximity sensor) 34 as a shift position determination means 22 provided in the automatic transmission 5. The reed switch 34 is configured such that when the shift lever is moved to the P range, for example, a magnetic field is applied by a magnet provided near the shift lever so that the terminals are connected. When the shift lever is moved to the P range and the terminals of the reed switch 34 are connected, power is supplied to the coil 31a of the relay 31 and the terminals of the relay 31 are connected (ON state).

  The changeover switches 32 and 33 are respectively connected to both side terminals of the elevating actuator 12, and the direction in which power is supplied to the elevating actuator 12 is changed by these changeover switches 32 and 33. Specifically, an operation switch 15, which is an operation means for performing an operation for instructing raising and lowering of the power receiving coil 11, is connected to the coils 32 a and 33 a of the changeover switches 32 and 33. For example, when the user of the electric vehicle 1 operates the operation switch 15 and outputs an upward operation signal, the upward operation signal is input to one changeover switch 32. That is, power is supplied to the coil 32a of the changeover switch 32. Thus, in this embodiment, the operation switch 15 itself, which is an operation means, also functions as the operation signal output means 21.

  As a result, the connection of the changeover switch 32 is switched from the output side terminal 32b to the input side terminal 32c, and power is supplied to the lift actuator 12 from the changeover switch 32 side. When a lowering operation signal is output, this lowering operation signal is input to the other changeover switch 33. That is, power is supplied to the coil 33a of the changeover switch 33. Thereby, the connection of the changeover switch 33 is switched from the output side terminal 33b to the input side terminal 33c, and electric power is supplied from the changeover switch 33 side to the lift actuator.

  Since the lifting actuator 12 uses the rotational force of the motor 12a as described above, the rising and lowering of the power receiving coil 11 can be switched by switching the direction of the electric power supplied to the lifting actuator 12. It has become.

  On the other hand, the shift lock mechanism 6 provided in the automatic transmission 5 is also connected to an auxiliary battery (12V battery) 30 similarly to the lifting actuator 12 so as to be driven by electric power supplied from the auxiliary battery 30. It has become. The power supply circuit connecting the auxiliary battery 30 and the shift lock mechanism 6 includes a relay 35 as the shift lock control means 28, a reed switch 36 as the power receiving side coil position determination means 26 and the shift lock release permission means 27. And are provided.

  For example, when the brake pedal 7 is depressed, the release signal is output by the release signal output means 25. That is, electric power is supplied to the coil 35a of the relay 35. Thereby, the terminals of the relay 35 are connected. The reed switch 36 is provided in the vicinity of the rising end of the power receiving side coil 11, and when the power receiving side coil 11 is lifted by the elevating actuator 12, for example, a magnetic field acts by a magnet 11 a provided in the power receiving side coil 11. Thus, the terminals are connected to each other.

  Next, based on the flowchart of FIG. 4, the control of the lifting actuator 12 during charging of the battery 2 by the charging control apparatus 10 for an electric vehicle according to the present embodiment will be described.

  Here, when charging the battery 2 of the electric vehicle 1 in the power supply device 50 as described above, first, the electric vehicle 1 is placed in a predetermined parking lot so that the power receiving side coil 11 faces the power transmission side coil 51 on the ground side. Parked. Thereafter, when the user of the electric vehicle 1 operates the operation switch 15 to instruct the lowering of the power receiving side coil 11, the power receiving side coil 11 is lowered to a predetermined position (lowering end) in accordance with the lowering operation signal output thereby. To do.

  As shown in FIG. 4, in the charging control apparatus 10 according to this embodiment, first, the driver moves the shift lever of the automatic transmission 5 to the P range, and the shift position is determined by the shift position determination unit 22 to be in the P range. If determined (step S1: Yes), the lowering permission means 23 permits the lowering of the power receiving side coil 11 in step S2. Referring to FIG. 3, when the driver moves the shift lever to the P range, the reed switch (proximity sensor) 34 is activated to be connected, and electric power is supplied to the coil 31 a of the relay 31 to relay the relay 31. Is connected (closed). As a result, power is supplied from the auxiliary battery 30 to the changeover switch 33. Incidentally, power is always supplied from the auxiliary battery 30 to the changeover switch 32.

  Next, in step S <b> 3, the drive control unit 24 determines whether or not the operation signal output unit 21 outputs a rising operation signal (ON / OFF). For example, when the ascending operation signal is not output as at the start of charging (step S3: No), the process proceeds to step S4, and the drive control means 24 further determines the presence or absence of the descending operation signal. Here, when the drive control unit 24 determines that the lowering operation signal is output (step S4: Yes), the drive control unit 24 supplies electric power to the motor 12a of the elevating actuator 12 from one terminal side to rotate (for example, forward rotation). The power receiving side coil 11 is lowered to a predetermined position (step S5). Referring to FIG. 3, when the user of the electric vehicle 1 instructs the lowering of the power receiving side coil 11 by operating the operation switch 15, the operation signal output means 21 outputs a lowering operation signal. That is, power is supplied to the coil 33a of the changeover switch 33. Thereby, the connection of the changeover switch 33 is switched from the output side terminal 33b to the input side terminal 33c. Electric power is supplied to the motor 12a of the lift actuator 12 from the changeover switch 33 side, and the motor 12a rotates (for example, forward rotation), whereby the power receiving coil 11 is lowered to a predetermined position.

  Then, charging of the battery 2 is started by operating the operation unit 54 of the power supply device 50 and supplying power to the power transmission side coil 51 with the gap between the power reception side coil 11 and the power transmission side coil 51 narrowed. Is done.

  After that, when charging of the battery 2 is finished and the user of the electric vehicle 1 operates the operation switch 15 to instruct to raise the power receiving side coil 11, the power receiving side coil 11 is turned on according to the rising operation signal output thereby. It rises to a predetermined position (rising end). As a result, a series of charging operations is completed.

  That is, if the drive control means 24 determines in step S3 that the ascending operation signal is output by the operation signal output means 21 (step S3: Yes), the process proceeds to step S6, and power is supplied to the motor 12a of the lifting actuator 12 from the other side. Then, it is rotated (for example, reversely rotated) to raise the power receiving side coil 11 to a predetermined position (rising end) (step S6). Referring to FIG. 3, when the user of the electric vehicle 1 instructs the ascent of the power receiving coil 11 by operating the operation switch 15, the operation signal output means 21 outputs an ascending operation signal. That is, electric power is supplied to the coil 32 a of the changeover switch 32. As a result, the connection of the changeover switch 32 is switched from the output side terminal 32b to the input side terminal 32c. The power supply to the coil 33a of the changeover switch 33 is stopped when the power reception side coil 11 is lowered to the lower end, and the connection of the changeover switch 33 is switched from the input side terminal 33c to the output side terminal 33b. Thereby, electric power is supplied to the motor 12a of the lifting actuator 12 from the changeover switch 32 side, the motor 12a rotates (for example, reversely rotates), and the power receiving side coil 11 rises to the rising end.

  Next, with reference to the flowchart of FIG. 5, the control of the shift lock mechanism 6 by the charge control device 10 of the electric vehicle 1 according to the present embodiment will be described.

  When the charging operation as described above is completed and the shift lever of the automatic transmission 5 is moved from the P range to the D range or the like, the shift lock mechanism 6 is released as follows.

  As described above, the power receiving side coil 11 is raised by the drive of the lifting actuator 12, and as shown in FIG. 5, the power receiving side coil 11 is moved to a predetermined position (in the present embodiment, the rising end) by the power receiving side coil position determining means 26 in step S11. ), The shift lock release permission means 27 permits the release of the shift lock mechanism 6 in step S12. Referring to FIG. 3, when the power receiving side coil 11 rises to a predetermined position, for example, a magnetic field acts by the magnet 11 a provided in the power receiving side coil 11, so that the terminals of the reed switch 36 are connected ( Closed state). Thereby, electric power is supplied from the auxiliary battery 30 to the relay 35.

  Thereafter, for example, when the driver depresses the brake pedal 7 and a release command for the shift lock mechanism 6 is output by the release signal output unit 25 (step S13: Yes), the shift lock control unit 28 sets the shift lock mechanism 6. Is canceled (step S14). Referring to FIG. 3, when the driver depresses the brake pedal 7, a release signal of the shift lock mechanism 6 is output by the release signal output means 25. That is, power is supplied to the coil 35a of the relay 35, and the terminals of the relay 35 are connected. As a result, electric power is supplied to the coil valve 6a of the shift lock mechanism 6 to release the lock, and the electric vehicle 1 can be started by moving the shift lever from the P range to the D range.

  As described above, in the present embodiment, the power-receiving side coil 11 is allowed to descend only when the shift position of the automatic transmission 5 is in the P range. It is possible to prevent the side coil 11 from being lowered. Further, when the battery 2 is charged, the power receiving coil 11 can be safely lowered to charge the battery 2 efficiently.

  Furthermore, since the movement of the shift lever of the automatic transmission 5 is restricted by the raised position (height) of the power receiving side coil 11, the electric vehicle 1 is started with the power receiving side coil 11 kept lowered. Can be prevented, and the safety of the electric vehicle 1 can be improved.

  As mentioned above, although one Embodiment of this invention was described, of course, this invention is not limited to this Embodiment, A various change is possible in the range which does not deviate from the main point.

  For example, in the above-described flowchart, it is determined whether or not the shift position is in the P range before the step of determining whether or not the ascending operation signal or the descending operation signal is output by the operation signal output means 21. However, the shift position determination step may be performed after the operation signal determination step. In this case, when it is determined that the shift position is not in the P range, the user of the electric vehicle 1 may be notified accordingly.

  For example, in this embodiment, when the shift position is not in the P range, the lowering of the power receiving side coil 11 is restricted, but for example, the raising of the power receiving side coil 11 may be similarly restricted.

  Further, in the present embodiment, the example in which the power receiving side coil 11 is provided at the bottom of the vehicle body so as to be vertically movable is described, but the power receiving side coil may be provided at the rear part, the front part, or the side part of the vehicle body. Good. Moreover, if the power receiving side coil is provided at the rear part, the front part or the side part of the vehicle body, the power transmitting side coil 51 may be provided, for example, on the wall surface of the indoor parking lot. In this case, the power receiving coil may be provided so as to be movable (lifted / lowered) in a substantially horizontal direction.

  Note that “lowering the power receiving side coil” means moving the power receiving side coil toward the transmitting side coil, and “raising the power receiving side coil” means that the power receiving side coil close to the transmitting side coil is moved. It means to move toward the car body side. That is, “raising and lowering the power receiving coil” is not limited to moving the power receiving coil in the vertical direction, and includes, for example, moving the power receiving coil in the horizontal direction.

DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Battery 3 Inverter 4 Drive motor 5 Automatic transmission 6 Shift lock mechanism 6a Coil valve 10 Charging control apparatus 11 Power receiving side coil 11a Magnet 12 Lifting actuator 12a Motor 20 Control part 21 Actuation signal output means 22 Shift position judgment means 23 Lowering permission means 24 Drive control means 25 Release signal output means 26 Power receiving side coil position determination means 27 Shift lock release permission means 28 Shift lock control means 30 Auxiliary battery 31 Relay 31a Coil 32 Changeover switch 32a Coil 32b Output side terminal 32c Input Side terminal 33 changeover switch 33a coil 33b output side terminal 33c input side terminal 34 reed switch 35 relay 35a coil 36 reed switch 50 power supply device 51 power transmission side coil 52 power supply unit 53 Power supply control unit 54 Operation unit 55 Main unit

Claims (6)

An automatic transmission,
And an electric vehicle equipped with a battery,
A power receiving coil connected to the battery;
Elevating means for elevating and lowering the power receiving side coil,
A charging control device for an electric vehicle that charges the battery in a state in which the power receiving side coil is lowered by the elevating means and is brought close to a power transmitting side coil arranged on the ground side,
An actuation signal output means for outputting an ascending actuation signal for instructing raising of the power receiving coil or a descending actuation signal for instructing lowering;
Shift position determining means for determining whether or not the shift position of the automatic transmission is a parking position;
A lowering permission means for permitting the lowering of the power receiving coil when the shift position determination means determines that the shift position is a parking position;
Drive control means for lowering the power receiving side coil by the elevating means in response to the lowering operation signal output by the operating signal output means when the lowering permission means permits the lowering of the power receiving side coil;
An electric vehicle charging control apparatus comprising: Opening and closing means for opening and closing a power supply circuit for supplying power to the lifting means,
The charging control device for an electric vehicle according to claim 1, wherein the lowering permission unit permits the lowering of the power reception side coil by closing the opening / closing unit.   The charging control device for an electric vehicle according to claim 2, wherein the opening / closing means is a relay provided in the power supply circuit.   The drive control means switches the direction in which power is supplied to the elevating means depending on whether the ascending operation signal is output or the descending operation signal is output by the operation signal output means. The charge control apparatus of the electric vehicle as described in any one of Claims 1-3. An operation means for performing an operation to instruct to raise and lower the power receiving side coil;
5. The charging of the electric vehicle according to claim 1, wherein the operation signal output unit outputs the rising operation signal or the lowering operation signal in accordance with an operation of the operation unit. Control device.   The charging control device for an electric vehicle according to any one of claims 1 to 5, wherein the power reception side coil is provided at a bottom portion of the electric vehicle.

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