JP6666865B2 - Charging device - Google Patents

Description

  Embodiments of the present invention relate to a charging device.

  In supplying power to an electric vehicle, there is a method in which a cable with a connector is attached to an inlet of a vehicle, power is supplied through the cable, and charging is performed using the supplied power. Power supply performed by this method is referred to as contact power supply, and charging performed using the supplied power is referred to as contact charging. A device that supplies power is called a contact power supply device, and a device to which power is supplied is called a contact charger. In addition, there is a method in which coils are installed on the power transmission side and the power reception side from the viewpoint of convenience, and wireless power transmission is performed using coupling of a magnetic field between the coils. Power supply performed by this method is referred to as non-contact power supply, and charging performed using the supplied power is referred to as non-contact charging. A device that supplies power wirelessly is called a contactless power supply device, and a device that receives power is called a contactless charger.

  2. Description of the Related Art There is known a configuration in which a vehicle is equipped with both a non-contact charger and a contact charger, and is compatible with a two-charging method capable of charging both contact and non-contact. At this time, a configuration in which the non-contact charger and the contact charger are integrally designed and one of the two is selected, or a configuration in which the number of parts and cost are reduced by sharing an AC-DC converter and a power receiving circuit. Has been proposed.

  A method has also been proposed in which a non-contact charger is added to the contact charger by retrofitting. In this method, a contact charger is designed on the assumption that a non-contact charger is added later from the design stage, components such as an AC-DC converter are shared, and the number of components and cost are reduced. In addition, the non-contact charger attached later is removable.

  In the conventional method, when mounting both a contact charger and a contactless charger in a vehicle, how to reduce the number of hardware parts and reduce costs on the premise that they are integrated design Focus is on.

  Considering the current state of the spread of chargers in electric vehicles, contact chargers will first spread, and non-contact chargers will spread later. Therefore, there is a demand for retrofitting a non-contact charger to a vehicle equipped with a contact charger. In this case, it is desired not to mount two contact chargers and two contactless chargers independently but to share a certain part. The conventional methods all provide an integrated design of a contact charger and a contactless charger. For configurations that do not anticipate the addition of a contactless charger, they can be shared if added later. Could not enjoy the benefits.

JP 2008-220130A JP 2012-130193A JP 2013-179723 A JP 2015-154650 JP 2015-42081

  The embodiment of the present invention makes it possible to reduce development costs and suppress the circuit scale by reusing as much as possible the same function as a contact charger when a non-contact charger is added later.

  The charging apparatus according to the embodiment of the present invention performs a first procedure including a plurality of procedures using a contact power supply apparatus connected via a wire and a plurality of first control signals. A first charge control unit that controls charging, a power reception control unit that controls power supply of the non-contact power supply device by communicating with the non-contact power supply device wirelessly, the power reception control unit, and a plurality of second control units. A second charge control unit that controls non-contact charging of the power storage device by executing a second procedure including a plurality of procedures using a signal, wherein at least a part of the second procedure is performed. The second control signal is common to at least a part of the first procedure, and is used in the at least a part of the second procedure. Same as the first control signal

FIG. 1 is a block diagram showing a charging system according to a first embodiment. The figure which shows the example of a control line, a control signal, and a power line. The figure which shows the example of the procedure for performing contact charging. FIG. 9 is a block diagram of a charging system according to a second embodiment. FIG. 9 is a block diagram of a charging system according to a third embodiment. FIG. 10 is a block diagram of a charging system according to a fourth embodiment. FIG. 13 is a block diagram for explaining a fifth embodiment. FIG. 13 is a block diagram of a charging system according to a sixth embodiment. FIG. 13 is a block diagram of a charging system according to a seventh embodiment. The block diagram of the charging system concerning an 8th embodiment. The block diagram of the charging system concerning a 9th embodiment. FIG. 4 is a current transition diagram at the start of charging in the case of contact power supply. The figure which shows the current transition diagram at the time of the charge start in the case of non-contact electric power feeding. FIG. 14 is a supplementary explanatory diagram of the start-up control shown in FIG. 13. The figure which shows the example of the current transition diagram at the time of current start in the control of non-contact charge. The figure which shows the example of the current transition diagram in case the exchange period of a message is fixed. The block diagram of the charging system concerning a twelfth embodiment. FIG. 21 is an output current transition diagram according to the twelfth embodiment. FIG. 21 is a block diagram of another example of the charging system according to the twelfth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a charging system according to the first embodiment. A contact power supply device 101 and a non-contact power supply device 102 are provided for a charging device 100 mounted on a moving body such as a vehicle. In addition, as an actual usage, there are both forms in which either one is provided or both are provided at the same time. In the present embodiment, a vehicle such as an electric vehicle is assumed as the moving body, but the moving body is not limited to this. For example, it may be a robot, a ship, or a mobile terminal such as a smartphone or a tablet terminal. In the present embodiment, since the charging device 100 is mounted on a vehicle, the charging device 100 is referred to as a vehicle charging device 100.

  Vehicle charging device 100 includes contact charging control unit (first charging control unit) 110, power storage device 106, non-contact power receiving device 112, and non-contact charging control unit (second charging control unit) 117. Contact charging control section 110 corresponds to, for example, a contact charger. The set of the non-contact power receiving device and the non-contact charging control unit 117 corresponds to, for example, a non-contact charger. Power storage device 106 includes a storage battery such as a secondary battery. The power storage device 106 includes a BMU (battery management unit) 118 that controls charging of the power storage device 106.

  A contact power supply device 101 and a non-contact power supply device 102 are installed outside the vehicle on which the vehicle charging device 100 is mounted (ground side). When the power supply to the vehicle is performed using the contact power supply device 101, the power supply is attached to the inlet of the vehicle using a cable with a connector, and power is supplied through the cable. Contact charging control section 110 controls charging of power storage device 106 using the supplied power. Power supply performed by this method is referred to as contact power supply, and charging performed using the supplied power is referred to as contact charging. Contact charging control section 110 performs charging of power storage device 106 while grasping the state of power storage device 106 via BMU 118. When the non-contact power supply device 102 is used, power transmission is performed wirelessly (non-contact) using the coupling of the magnetic field between the coils. The non-contact charge control unit 117 controls charging of the power storage device 106 using the supplied power. Power supply performed by this method is referred to as non-contact power supply, and charging performed using the supplied power is referred to as non-contact charging. The non-contact charging control unit 117 performs charging of the power storage device 106 while grasping the state of the power storage device 106 via the BMU 118.

  When performing contact charging, vehicle charging apparatus 100 receives power supplied from contact power supply apparatus 101 and charges power storage apparatus 106 with the received power. In the case of performing non-contact charging, power is received by wireless power transmission between the non-contact power supply device 102 and the non-contact power receiving device 112, and the received power is charged in the power storage device 106.

  The contact power supply device 101 includes a contact charging operation unit 107 and a contact power supply control unit 108. An AC power supply P1 such as a commercial power supply is connected to the contact power supply device 101. The contact charging operation unit 107 receives an operation related to contact charging by the user, and supplies an operation signal representing the input operation to the contact power supply control unit 108. Contact charging operation unit 107 may include a display for displaying data supplied from contact power supply control unit 108. When performing contact charging, contact power supply control section 108 controls power supply to vehicle charging apparatus 100 while transmitting and receiving control signals to and from contact charge control section 110 according to a predetermined procedure. Further, the contact power supply control unit 108 converts AC power supplied from the AC power supply P1 into DC (AC-DC conversion), and supplies the converted power. Note that a DC power supply may be connected instead of the AC power supply. In this case, the function of AC-DC conversion may not be provided. The contact power supply control unit 108 may be configured by a dedicated hardware circuit, or may be configured by a processor and software. The contact charging operation unit 107 may also be configured by a dedicated hardware circuit, or may be configured by a processor and software.

  One end of a power line 103A that is a wired cable is connected to the contact power supply device 101, and a connector 104 is fixed to the other end of the power line 103A. The connector 104 is connected to an inlet (vehicle-side connector) 105 that is a vehicle-side connector insertion port. The connector 104 is detachable from the inlet 105. The power line 103A is connected via a connector 104 to a power line 103B inside the vehicle. Power line 103B is connected to power storage device 106 via switch 111. Contact power supply device 101 is electrically connected to power storage device 106 through power lines 103A and 103B. Here, power storage device 106 constitutes a part of vehicle charging device 100, but may be arranged outside vehicle charging device 100 and electrically connected to vehicle charging device 100 by a wired cable or the like. The switch 111 is configured by, for example, a semiconductor switch. The power line 103A and the power line 103B may be collectively described as a power line 103.

  The contact power supply control unit 108 is connected to one end of a control line 109A that is a wired cable, and the other end of the control line 109A is fixed to the connector 104. The control line 109A is connected to the control line 109B in the vehicle via the connector 104. In the vehicle, the contact charging control unit 110 is connected to the control line 109B. Thereby, transmission and reception of a control signal (first control signal) between the contact power supply control unit 108 and the contact charge control unit 110 are possible. A procedure for performing contact charging (sometimes called a contact charging procedure or a first procedure) is executed between the contact power supply control section 108 and the contact charging control section 110 by transmitting and receiving control signals. The control line 109A and the control line 109B may be collectively described as a control line 109. The control line 109 (109A, 109B) includes one signal line or a plurality of signal lines.

  When performing contact charging, the user performs an operation such as charging start using the contact charging operation unit 107 with the connector 104 connected to the inlet 105. Thereby, charge control (start, charge, and end control) is performed between the contact power supply control unit 108 and the contact charge control unit 110 on the vehicle side according to a predetermined procedure. That is, contact charging control section 110 controls contact charging with contact power supply control section 108. After the switch 111 is turned on (connected) at a predetermined timing, power is transmitted from the contact power supply device 101 and the power storage device 106 is charged.

  The control signal transmitted and received between the contact power supply device 101 and the vehicle charging device 100 (that is, between the contact power supply control unit 108 and the contact charge control unit 110) and the procedure of the contact charging procedure (first procedure) performed based on the control signal include: Standards for rapid charging with a large power of about 50 kW include those specified and standardized by the CHAdeMO Council or the like. Such standardization has already been carried out in the contact power supply device, and interconnection between the contact power supply device and the vehicle charging device manufactured by different manufacturers is possible.

  FIG. 2 shows examples of control lines, control signals, and power lines. These control signals and the like are different from those of CHAdeMO. The power lines 103A and 103B in FIG. 1 correspond to power supply lines (+,-) that actually supply power. The control lines 109A and 109B in FIG. 1 are, for example, analog signal lines. The control signal includes various information (instructions, control data, and the like) necessary for charge control. The control signal includes, for example, a high-level signal (H signal) and a low-level signal (L signal). A charge start / stop signal (A), a connection confirmation signal (B), and a charge permission / prohibition signal (D) are defined. The output source of these signals may be either the contact charging device or the charging device side. An example of a control line other than the analog signal line is a CAN (Controller Area Network) signal line. In the CAN signal line, digital signals are transmitted and received by a transmission method different from the H signal and the L signal. The digital signal has, for example, a frame format. A control signal transmitted and received on the CAN signal line may be referred to as a CAN signal.

  FIG. 3 shows an example of the procedure of the contact charging procedure. Processing for transmitting and receiving control signals is indicated by solid-line blocks, and other processing is indicated by broken-line blocks. First, a charge start processing phase is performed. When the connector 104 on the contact power supply apparatus 101 side is connected to the inlet 105 of the vehicle, the connection confirmation signal (B) is automatically turned on (high level). The contact charging control unit 110 detects that the connection confirmation signal (B) has been turned on (S11). When the user performs a charge start operation with the contact charge operation unit 107 (S12), a charge start operation signal is input to the contact charge control unit 108, and the contact power supply control unit 108 turns on the charge start / stop signal (A). (High level) and transmits to the contact charging control unit 110 (S13). The high-level charge start / stop signal (A) corresponds to a charge start signal. Thereby, the user is notified that the charging start operation has been performed.

  CAN communication is started between the contact power supply device 101 and the vehicle charging device 100 (S14, S15), and transmission / reception of charging condition information is performed (S16, S17). The charging condition information includes, for example, a storage battery capacity value, a maximum allowable voltage value, a maximum allowable current value, and the like. The storage battery capacity value may be transmitted from the vehicle charging device 100 to the contact power supply device 101, and the maximum allowable voltage value and the maximum allowable current value may be transmitted bidirectionally. On the basis of the exchanged information, both sides determine whether or not charging is possible (S18, S19).

  When determining that charging is possible, the vehicle charging apparatus 100 turns on (connects) the switch 111 (S20). The charge permission / prohibition signal (D) is turned on (high level) (S21). The charge permission / prohibition signal (D) set to the high level corresponds to the charge permission signal. Thereby, charging from the contact power supply device 101 is permitted. Next, the charging phase is entered.

  In the charging phase, charging control is started by transmitting a charging current command value from the contact charging control unit 110 to the contact power supply device 101 via the CAN signal line (S22). In the contact power supply device 101, power transmission is performed via the power line 103 based on the specified charging command value. The contact power supply apparatus 101 transmits information such as the current voltage value and current value to the vehicle charging apparatus 100 via the CAN signal line (S23). This operation is performed, for example, every 100 ms. This operation is continuously performed until the power storage device 106 is fully charged, charging is stopped by the user, or a device abnormality is detected.

  Contact charging control section 110 on the vehicle side exchanges information with BMU 118 to grasp the state of power storage device 106. Further, the state of the vehicle brake and the parking brake and the state of various temperatures may be monitored. Also, the connection timing of the switch 111 is controlled. As an example, the contact charging control unit 110 may monitor the voltage value and the current value, the state of the storage battery, the state of releasing the brake of the vehicle, and the state of the temperature of the vehicle during charging. The contact charging control unit 110 controls to suspend charging if there is an abnormality. When charging is interrupted, for example, a failure flag or charging interruption information is transmitted to the contact power supply apparatus 101 via a CAN signal line. The contact power supply device 101 stops power supply. FIG. 3 shows a procedure in the case where the charging is not interrupted.

  When the power storage device 106 is fully charged, the process enters a charge end / stop processing phase. Upon detecting full charge, the vehicle charging device 100 transmits a charging stop request to the contact power supply device 101 via the CAN signal line (S24). The charging stop process is performed in each of the contact charging device 101 and the vehicle charging device 100 (S25, S26). The charging start / stop signal (A) turned off (low level) is transmitted from the contact power supply device 101 (S27). The low-level charge start / stop signal (A) corresponds to the charge stop signal. The vehicle charging device 100 transmits a charging permission / prohibition signal (D) that is turned off (low level) (S28). The low level charge permission / prohibition signal (D) corresponds to the charge prohibition signal. This mutually notifies that the charging has been stopped. Thereafter, when the connector is removed (S29), the contact charge control unit 110 recognizes this by the connection confirmation signal (B) that is turned off (low level).

  In this manner, by defining the control signal exchanged on the control line 109 and the control procedure (procedure of the contact charging procedure), charging can be performed using the contact power supply device and the vehicle charging device of different manufacturers. It is possible.

  Returning to FIG. 1, a configuration for non-contact charging will be described. The non-contact power supply device 102 includes a non-contact power supply control unit 121, a rectifier circuit 122, a high-frequency inverter 123, and a power transmission-side resonator 124. The power transmission side resonator 124 includes a coil and a capacitor connected in series. The rectifier circuit 122 is connected to an external power supply P2 such as a commercial power supply. The non-contact power supply control unit 121 includes a wireless communication circuit that wirelessly communicates with the vehicle-side power reception control unit 131 via the antenna 125. The wireless communication circuit establishes a wireless link and communicates with the wireless communication circuit mounted on the vehicle-side power reception control unit 131 according to a predetermined procedure. The non-contact power supply control unit 121 controls the rectifier circuit 122 and the high-frequency inverter 123 based on communication with the vehicle-side power reception control unit 131. The non-contact power supply control unit 121 may be configured by a dedicated hardware circuit, or may be configured by a processor and software.

  The non-contact power receiving device 112 on the vehicle side includes a power receiving control unit 131, a power receiving side resonator 134, a rectifier circuit 132, and a DC-DC converter 133. The power reception control unit 131 includes a wireless communication circuit that wirelessly communicates with the non-contact power supply control unit 121 on the power supply side via the antenna 135. The power reception control unit 131 controls the rectifier circuit 132 and the DC-DC converter 133. The power reception control unit 131 is connected to the contactless charging operation unit 120. The non-contact charging operation unit 120 receives an operation related to non-contact charging from the user, and supplies an operation signal representing the input operation to the power reception control unit 131. Further, contactless charging operation unit 120 may include a display that displays data supplied from power reception control unit 131. The non-contact charging operation unit 120 may have a configuration including a display panel and buttons, or may be a touch panel. The power reception control unit 131 may be configured by a dedicated hardware circuit, or may be configured by a processor and software. The DC-DC converter 133 is connected to the power line 103B, and is connected to the power storage device 106 via the power line 103. A switch 115 is provided between the DC-DC converter 133 and the power storage device 106 on the power line 103B.

  Power transmission is performed wirelessly (that is, in a non-contact manner) between the power transmitting resonator 124 and the power receiving resonator 134. This wireless power transmission corresponds to power transmission on the power line 103 (103A, 103B) via the connector 104 and the inlet 105 in the case of contact power supply. Wireless communication is performed between the non-contact power supply control unit 121 and the power reception control unit 131 via the antennas 125 and 135 to transmit and receive various types of information. For example, the power reception control unit 131 transmits and receives control information for performing wireless power transmission under designated conditions. Depending on the protocol used, acknowledgment information for the received information may be transmitted. The power received by the power-receiving-side resonator 134 is converted into DC power that can charge the power storage device 106 through the rectifier circuit 132 and the DC-DC converter 133. The converted DC power is supplied to the power storage device 106 through the switch 115 that is turned on, and the power storage device 106 is charged. In the case of contact power supply, the connector 104 and the inlet 105 exist, but in the case of non-contact power supply, the connector inlet is not required.

  The non-contact charging control unit on the vehicle side includes a power receiving control unit 131 and a non-contact charging control unit 117. The non-contact charging control section 117 performs substantially the same operation as the contact charging control performed by the contact charging control section 110 among the non-contact charging controls. The power reception control unit 131 mainly performs control specific to non-contact charging.

  The contactless charging control unit 117 grasps the state of the power storage device 106 by exchanging information with the BMU 118. It also monitors the state of the vehicle brake and parking brake, and the state of various temperatures. In addition, the timing of turning on or off the switch 115 is controlled. For example, the non-contact charging control unit 117 turns on the switch 115 when it is determined that the non-contact charging is executable in the non-contact charging compatibility determination.

  The power receiving control unit 131 and the non-contact charging control unit 117 are connected by a control line 119. The control line 119 includes one signal line or a plurality of signal lines. The control line 119 corresponds to the control line 109 in the case of contact charging, and transmits and receives a control signal related to non-contact charging and controls procedures between the power receiving control unit 131 and the non-contact charging control unit 117 via the control line 119 ( A non-contact charging procedure or a second procedure) is performed.

  Here, at least a part of the interface between the contact charging control unit 110 and the contact power supply apparatus 101 (the interface on the contact charging control side) is an interface between the power receiving control unit 131 and the contactless charging control unit 117 (the contactless charging control side). Interface). This specifically means the following. That is, at least a part of the procedure of the contactless charging procedure executed between the power receiving control unit 131 and the contactless charging control unit 117 is the procedure of the contact charging procedure executed between the contact charging control unit 110 and the contact power supply apparatus 101. Are common to at least some of them, and a common procedure means that the same control signal is used in both procedures.

  Specifically, the procedure of the non-contact charging procedure between the power receiving control unit 131 and the non-contact charging control unit 117 is performed in the same or almost the same procedure as the contact charging procedure shown in FIG. However, the connection confirmation signal (B) in FIG. 3 (ON when the connector is connected, OFF when the connector is not connected) is because the control units 131 and 117 are already connected to each other. In the case of non-contact power supply, a configuration in which the connection confirmation signal (B) and the procedure of the connection confirmation are omitted is also possible. However, also in the case of non-contact charging, a procedure corresponding to connection confirmation may be executed using the same connection confirmation signal (B). For example, before the user performs the charging start operation, it may be confirmed that the non-contact power supply device is arranged at a position where power can be supplied, and an operation indicating that fact may be performed on the non-contact charging operation unit 120. The power reception control unit 131 may turn on the connection confirmation signal (B) in response to the operation signal. Alternatively, the connection confirmation signal (B) may be turned on (high level) by automatically detecting that the non-contact power supply device is arranged at a position where power can be supplied. Whether the non-contact power supply device is arranged at a position where power can be supplied may be determined by communication between the non-contact power supply control unit 121 and the power reception control unit 131, or the non-contact power supply device 102 may be determined using a position sensor. May be determined at a position where non-contact power supply is possible.

  When the user performs a charging start operation on the non-contact charging operation unit 120, the power reception control unit 131 sends the ON charging to the non-contact charging control unit 117 in the same manner as in the procedure of FIG. The start signal (A) is transmitted. The power reception control unit 131 performs transmission / reception of charging condition information, determination of compatibility, transmission of charging information, charging stop processing, transmission of a charging stop signal, and the like, as in FIG. For some or all of these processes, the power reception control unit 131 may communicate with the non-contact power supply device 102 to transmit and receive information necessary for control as necessary (the non-contact charging control unit 117). Does not need to be aware of the exchange between the power reception control unit 131 and the non-contact power supply device 102, and does not affect the commonality between the two interfaces (the interface on the contact charge control side and the interface on the non-contact charge control side). Do not give). For example, the compatibility determination may be performed by the non-contact power supply control unit 121 on the power supply side, and the result of the compatibility determination may be sent to the power reception control unit 131. In this case, the wireless link (wireless line) 114 between the power receiving control unit 131 and the non-contact power supply control unit 121 is also considered to correspond to the control line (analog line and CAN signal line) 109 in the case of contact power supply.

  When performing non-contact charging, the non-contact charging control unit 117 outputs a command value (for example, a charging current command value) to the power receiving control unit 131, and the power receiving control unit 131 performs power supply according to the charging current command value. As described above, the rectifier circuit 132 and the DC-DC converter 133 are controlled while transmitting and receiving information such as a designated value of output power or output current by performing wireless communication with the non-contact power supply control unit 121. In addition, the non-contact power supply control unit 121 on the power supply side controls the rectifier circuit 122 and the high-frequency inverter 123 according to the designated value from the power reception control unit 131, and transmits power via magnetic coupling.

  In this way, the procedure of both procedures is made as common as possible, and the same control signal is used for the common procedure, so that the non-contact charging control section 117 has the same or almost the same design as the contact charging control section 110. Can be done. However, if non-contact specific control is required, it is necessary to define procedures and signals individually. In addition, if there is a procedure specific to contact power supply, the procedure is unnecessary, and a signal used in the procedure is not necessary in the procedure of non-contact charging. Regarding the processing of the procedure common to both procedures, the circuit configuration and the program (when executed by a processor such as a CPU) of the control units 110 and 117 can be shared.

  As described above, when performing non-contact charging, the power receiving control unit 131 takes the initiative in performing charging control by a charging operation performed by the user. This corresponds to the fact that the contact power supply device 101 takes the initiative in performing charge control by a user operation of the contact charge operation unit 107 when performing contact charge. By doing so, it is possible to provide the user with the same operation procedure as the operation procedure for the contact power supply apparatus 101. That is, the compatibility of the operation with the contact charging can be realized. This will be described in detail. When a non-contact charger is retrofitted on a vehicle equipped with a contact charger, the user must use the contact charger beforehand, so the operability and stability of the contact charger are not considered. It is thought that we will seek something more than equivalent based on the container. In the related art, regarding the operability, the user interface is considered independently for the contact charger and the contactless charger, and there is no compatibility between the contactless charger and the contact charger regarding the operability. In the present embodiment, the same operation procedure is provided to the user by the above-described configuration, and the problem of the related art is solved.

  In the above description, as a condition that the two interfaces (the interface on the contact charge control side and the interface on the non-contact charge control side) are common, a part of the procedure is common, and the same control signal is used in the common procedure. However, there may be additional requirements. For example, when each of the control lines 109 and 119 is configured by a plurality of signal lines, a common procedure may require that the number of used signal lines be the same. At this time, the control signal transmitted on each signal line may be required to be the same for the control line 109 and the control line 119. Further, the position (order of arrangement) of each signal line may be required to be the same for the control lines 109 and 119. In addition, the control lines 109 and 119 may be required to have the same physical configuration (material, size, and the like).

  As described above, according to the present embodiment, the interface between the power reception control unit 131 and the non-contact charging control unit 117 is the same or almost the same as the interface between the contact power supply control unit 108 and the contact charging control unit 110, so that Contact charging control section 117 can use the same or almost the same (copied or slightly modified copy) as contact charging control section 110 both in hardware and software. . Since the software for controlling the device requires a lot of time for verification work and the like in order to ensure the quality, using a copy of the contact charge control unit 110, which has a proven track record, as the non-contact charge control unit 117, Costs for software development and verification can be significantly reduced.

(Second embodiment)
FIG. 4 is a block diagram of a charging system according to the second embodiment. Elements that are the same as or correspond to those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted except for extended or changed processing (the same applies to drawings used in other embodiments described later).

  The difference from the first embodiment is that the contact charging control unit 110 and the non-contact charging control unit 117 of FIG. 1 are combined into a vehicle charging control unit 401 that is the same hardware. Although the control line 109B and the control line 119 are separately arranged, a common control device (vehicle charge control unit 401) can be used for non-contact charging and contact charging. Specifically, as for the software (program) implemented in the vehicle charging control unit 401, the same program 402 may be shared for a part common to both controls, and a difference program 403 for non-contact charging may be added. The program 403 adds or changes some processes to the program 402. When the processing is performed by hardware, a circuit that performs the same processing may be shared with the hardware, or the same circuit may be used, and a circuit may be added only for the difference.

  According to the present embodiment, the same hardware can be shared between the contact charging control and the non-contact charging control by making all or part of the interface on the contact charging side and the interface on the non-contact charging side common. . The same program can be shared by software for processing of common parts. As a result, it is possible to reduce equipment costs and development / verification costs.

(Third embodiment)
FIG. 5 is a block diagram of a charging system according to the third embodiment. The difference from the first embodiment is that the power reception control unit 131 and the non-contact charging control unit 117, which are separate hardware, are combined into the same hardware, the non-contact charging control unit 501, and the software is included therein. That is, a non-contact charging control module 502 and a power receiving control module 503 are provided as modules. The non-contact charging control module 502 and the power receiving control module 503 are executed by a processor such as a CPU.

  A software interface 504 between the two modules 502 and 503 corresponds to an interface between the contact charging control unit 110 and the contact power supply apparatus 101, and a variable representing a signal having the same definition as that of the interface corresponds to the two modules 502 and 503. It is exchanged between. For example, as shown in FIG. 2, the two modules 502 and 503 exchange a variable representing a charge start / stop signal (A), a variable representing a charge permission / prohibition signal (D), and the like. At this time, the definition of the polarity of each signal may be the same. For example, if the high level (ON) of the charge start / stop signal (A) indicates start and the low level (OFF) indicates stop, the corresponding variable also starts at a value (for example, 1) indicating the high level. A value indicating a low level (for example, 0) means stop.

  By making the interface 504 between the software modules the same as at least a part or all of the interface on the contact charging side, all or a part of the software installed in the contact charging control unit 110 can be transmitted to the non-contact charging control module 502. Can be diverted. This makes it possible to reduce the cost of software development and verification. In addition, the power receiving control unit 131 and the non-contact charging control unit 117 according to the first embodiment can be integrated into one piece of hardware, and thus, the manufacturing cost can be suppressed by reducing the number of components and the like.

  According to the present embodiment, the power receiving control unit 131 and the non-contact charging control unit 117 in the first embodiment are implemented as the same hardware (for example, a general computer such as a CPU and a memory), and Two software modules, a power receiving control module and a non-contact charging control module, are mounted. The interface between the modules is based on the interface on the contact charging side. This makes it possible to reduce development and verification costs, as in the first embodiment.

(Fourth embodiment)
FIG. 6 is a block diagram of a charging system according to the fourth embodiment. In the third embodiment shown in FIG. 5, the contact charge control unit 110 and the non-contact charge control unit 501 are provided as separate and independent hardware. In the present embodiment, these are also integrated into one piece of hardware and implemented as the charge control unit 601. There, two software modules, a vehicle charging control module 602 and a power receiving control module 603, are mounted. In the vehicle charging control module 602, the processing of the common part among the processing of the contact charging control and the processing of the non-contact charging control is collected. The interface 604 between the vehicle charging control module 602 and the power receiving control module 603 is the same as at least a part or all of the interface on the contact power supply side.

  According to the present embodiment, the vehicle charging control module 602 can be shared by the contact charging control and the non-contact charging control, thereby further reducing the cost of software development and verification. In addition, by sharing control hardware (charging control unit 601) for contact charging control and non-contact charging control, it is possible to reduce the number of components and thus to suppress manufacturing costs.

(Fifth embodiment)
FIG. 7 is a block diagram for explaining the fifth embodiment. The difference from the first embodiment is that the non-contact charging operation unit 120 is provided not on the vehicle but on the non-contact power supply device 102 outside the vehicle. The contactless charging operation unit 120 is connected to the contactless power supply control unit 121, and can transmit an operation signal from the contactless charging operation unit 120 to the power reception control unit 131 via the wireless link 114.

  By installing the non-contact charging operation unit 120 in the non-contact power supply device 102 in this way, the usability of the non-contact power supply device 102 approaches the contact power supply device 101. Thereby, affinity or operability to the user in the operation in the case of non-contact charging can be improved.

(Sixth embodiment)
FIG. 8 is a block diagram of a charging system according to the sixth embodiment. In the present embodiment, an external power supply device 801 having both functions of a contact power supply device and a non-contact power supply device is provided. The external charging operation unit 802 has both functions of the contact charging operation unit 107 and the non-contact charging operation unit 120.

  According to the present embodiment, the contact-side power supply device and the non-contact power supply device are combined into one device, and the charging operation unit is common to both types, so that the configuration on the power supply side can be simplified.

(Seventh embodiment)
FIG. 9 is a block diagram of a charging system according to the seventh embodiment. This embodiment is a modification of the second embodiment shown in FIG.

  In the configuration of FIG. 4, the charge start / stop signal (A), the connection confirmation signal (B), the charge permission / prohibition signal (D), and the CAN signal shown in FIG. 2 are exchanged via the control line 109 (109A, 109B). Was. In the present embodiment, among these signals, the control line 1004 (1004A, 1004B) for transmitting the connection confirmation signal (B) is arranged as a signal line independent of the control line 109. Similarly, on the control line 119, if these signals (A), (B), signals (D), and CAN signals are exchanged, the connection confirmation signal (B) among these signals is transmitted. The control line 1005 is arranged as a signal line independent of the control line 119. A switch 1006 is provided on the control line 1005, and conduction of the control line 1005 is controlled by turning on or off the switch 1006. Regarding conduction between the control line 1004 and the control line 1005, turning on the switch 1006 corresponds to connecting the connector 104 to the inlet 105.

  When a vehicle charging device capable of charging by two methods, contact charging and non-contact charging, is configured, both charging cannot be performed at the same time, and when one charging is performed, the other charging cannot be performed. Such exclusive control may be required. Originally, non-contact charging is often performed for the purpose of improving convenience without connecting a cable, and there is not much demand for performing non-contact charging and contact charging by connecting a cable. The fact that charging can be performed simultaneously by both methods allows connection of a connector for performing contact charging during non-contact charging. Performing the connector connection operation during the high-voltage charging operation increases the risk in terms of safety. In addition, the charge capacity of the power storage device greatly changes during charging, and the battery management becomes complicated. Therefore, in order to simplify the configuration, it is necessary to implement exclusive control between contact charging and non-contact charging. The present embodiment provides a method for performing exclusive control between the two charging methods. In this case, all or a part of the interface on the contactless charging side is the same as the interface on the contact charging side, as in the other embodiments described above.

  As an example, in the non-contact charging operation unit 120, the power reception control unit 131 performs an operation that triggers the start of non-contact charging (such as a user's operation to start charging or a transition to a charging mode for performing non-contact charging). Upon detection, the switch 1006 of the control line 1005 is turned on (connected) at a predetermined timing. As a result, the control line 1005 becomes conductive, and the connection confirmation signal (B) can be detected by the vehicle charging control unit 401. After the switch 1006 is turned on, the connection confirmation signal (B) may be turned on (high level). After the subsequent processing is performed in the procedure of FIG. 3 and the non-contact charging is completed, the power reception control unit 131 turns off the switch 1006. When the vehicle charging control unit 401 detects that the connector 104 has been connected while the switch 1006 is ON or during non-contact charging, the vehicle charging control unit 401 forcibly interrupts non-contact charging, Shift to control of contact charging. The power reception control unit 131 turns off the switch 1006. Specifically, power reception control section 131 detects that contact charging is started, for example, by receiving a stop instruction from vehicle charge control section 401, and turns off switch 1006. By doing so, exclusive control between both systems can be realized. Note that the vehicle charge control unit 401 can also perform a method of controlling non-contact charging to be continued without contact charging when the connection of the connector 104 is detected.

  Further, when vehicle charging control section 401 detects that switch 1006 is turned on during execution of contact charging (or detects a high-level connection confirmation signal (B)), contact charging is forcibly performed. And the process may shift to non-contact charging. Alternatively, the vehicle charging control unit 401 can control to continue contact charging as it is and not to perform non-contact charging.

  Although the hardware switch 1006 is provided in the configuration of FIG. 9, a switch function using software may be provided in the power reception control unit 131 instead of the switch 1006. In that case, the power reception control unit 131 may turn on the connection confirmation signal (B) at a predetermined timing by detecting an operation that triggers the start of non-contact charging in the non-contact charging operation unit 120. Further, the connection confirmation signal (B) may be turned off at a predetermined timing triggered by the end of charging.

  According to the present embodiment, it is possible to perform exclusive control of contact charging and non-contact charging by turning on / off the switch at a predetermined timing triggered by charging start / stop.

(Eighth embodiment)
FIG. 10 is a block diagram of a charging system according to the eighth embodiment. This embodiment is a modification of the seventh embodiment.

  The difference from the seventh embodiment is that the control line 109 (109A, 109B) between the contact power supply device 101 and the vehicle charging control unit 401 is connected to the control line 119 between the power receiving control unit 131 and the vehicle charging control unit 401. That is, they are connected by the terminal 1101. With such a configuration, in the vehicle charging control unit 401, the hardware (connector and the like) necessary for connection with the control line is unified into one. Note that the control lines (signal lines) 1004B and 1005 for the connection confirmation signal are not connected to each other. This is for performing the exclusive control described in the seventh embodiment. With such a configuration, the structure of the vehicle charging control unit 401 is simplified, and cost reduction is possible.

  Note that, similarly to the control lines 1004 and 1005, a configuration in which the signal lines 1004B and 1005 for the connection confirmation signal are connected to each other is also possible. In this case, an ID (identifier) of the contact type or the non-contact type is set in a control signal exchanged via the CAN signal line shown in FIG. 2 (for example, at the beginning of the start of CAN communication in the charging start processing phase). I do. The vehicle charging control unit 401 checks the ID included in the control signal (CAN signal) received from the contact power supply device 101 or the non-contact power receiving device 112, and determines to execute the procedure of the charging method indicated by the ID. Then, charging by a charging method different from the method indicated by the ID is inactivated. For example, when the ID included in the CAN control signal indicates the contact mode, the non-contact charging is inactivated (forcibly interrupted if the non-contact charging is being performed. The switch 1006 is turned off), and the contact is stopped. The control is performed so as to execute the system-type charging. It is conceivable that the control signal including the ID is transmitted, for example, when the CAN communication starts (S14, S15) in FIG. By determining the charging method based on the ID in this manner, the control lines 1004B and 1005 for the connection confirmation signal can be connected to each other.

(Ninth embodiment)
FIG. 11 is a block diagram of a charging system according to the ninth embodiment. This embodiment is based on the first embodiment. Contact power supply device 101 is not connected to vehicle charging device 100 and is not shown here.

  A cover 1202 is provided on the inlet (vehicle-side connector) 105. The cover 1202 is detachable from the inlet 105, and is closed except when performing contact charging. For example, when the vehicle is running or parked, the cover 1202 is closed. When performing contact charging, the cover 1202 is opened, and the connector 104 of the contact power supply device 101 is inserted into the inlet.

  An open / close sensor 1203 for detecting the open / close state of the cover 1202 is arranged in the vehicle charging device 100. The power reception control unit 131 is connected to the open / close sensor 1203 and detects whether the cover 1202 is open or closed. The power reception control unit 131 confirms the opening and closing of the cover 1202 at the time of starting the charging of the non-contact charging, and stops the charging start when the cover 1202 is open (for example, does not output the charging start signal). The power reception control unit 131 notifies the user via the contactless charging operation unit 120 that the cover is open. In addition, when detecting the open state of the cover 1202 during non-contact charging, the power reception control unit 131 stops charging (for example, outputs a charge stop request. In the procedure of FIG. 3, the request is output from the vehicle side). However, a configuration in which output is performed from the power supply side is also possible). Then, the user is notified via the contactless charging operation unit 120 that the cover has been opened.

  According to the present embodiment, exclusive control of contact charging and non-contact charging can be performed more reliably, and high security can be provided to the user.

  Further, as shown in FIG. 11, a lock mechanism 1204 is provided for the inlet 105 and the cover 1202, and when the non-contact charging is started, the cover 1202 can be locked to the inlet 105 and the cover 1202 can be opened. Not to be. The lock control unit 1205 is connected to the power reception control unit 131, and upon receiving a lock instruction, moves the lock mechanism 1204 to fix the cover 1202 with respect to the inlet 105 so as not to move from a closed state. Upon receiving the lock release instruction, the lock control unit 1205 returns the lock mechanism 1204 to the original position so that the cover 1202 can be removed from the inlet 105. The lock instruction may be output, for example, in the procedure of FIG. 3 when the power reception control unit 131 receives the charge permission signal from the non-contact charge control unit 117, or at another timing before the start of charging. May be output. The lock release instruction may be output, for example, when the power reception control unit 131 receives a charge prohibition signal from the non-contact charge control unit 117 after charging is completed.

  With such a configuration, the cover 1202 cannot be opened at least during non-contact charging. Accordingly, the exclusive control that does not perform the contact charging during the non-contact charging becomes more reliable, and it is possible to provide higher security to the user.

(Tenth embodiment)
In the present embodiment, a description will be given of start-up control of output power (or output current) in the case of contact charging and start-up control in the case of contactless charging. Hereinafter, the description will be made based on the configuration of FIG. 1, but the control described below can be similarly applied to the configurations of the other embodiments described above.

  FIG. 12 is a current transition diagram at the start of contact charging. 12, in the contact charging, according to the procedure described in FIG. 3, a current command value is notified from the vehicle charging device 100 side at a constant time interval of, for example, 100 msec, and the contact power supply device 101 is set so that the current of the command value is obtained. The side controls output of power supply. After the start of charging, the current command value is gradually increased from zero current to a target value (maximum current value) (120 [A] in FIG. 12). Then, on the vehicle side, contact charging control section 110 compares the output current value (measured value of the output current of contact power supply apparatus 101) with the upper limit threshold value and the lower limit value threshold value so that contact power supply apparatus 101 operates normally. Check whether it is working (whether an error has occurred). Here, 12 [A] corresponding to 10% (first reference) of the maximum value 120 [A] is set as an allowable difference, and a value obtained by adding 12 [A] to a gradually increasing current command value is an upper limit threshold. A value obtained by subtracting 12 [A] from the value and the current command value is set as a lower threshold value, and it is confirmed whether or not the output current value falls within these ranges. When the output current value is not included in this range, it is determined that an abnormality has occurred in the contact power supply device 101 or the vehicle charging device 100 (for example, the vehicle has failed), and an operation of stopping charging is performed.

  The method of increasing and changing the current command value is determined with a certain margin based on the components constituting the contact power supply device 101 and the system configuration thereof, but these are applied to the contactless power supply device 102 as they are. This narrows the degree of freedom in designing the contactless power supply apparatus 102. In the non-contact power supply apparatus 102, compared to the case of the contact power supply apparatus 101, wireless is used for communication, and thus a control delay occurs. In addition, characteristics unique to non-contact power supply, such as a change in the charging start speed due to the distance between the coils and the displacement of the coils, also appear in the current transition. If an attempt is made to start the current at the same speed as that of the contact power supply apparatus 101, it is necessary to select parts and design the system accordingly, and the design freedom is extremely narrowed. In addition, depending on the design, during the start-up of the charge, the allowable upper threshold value may be exceeded or the allowable lower threshold value may be decreased frequently, resulting in a situation where charging stability is lacking.

  FIG. 13 shows a current transition diagram at the start of charging in the case of non-contact power supply according to the present embodiment. In the present embodiment, the non-contact charging control section 117 gives the target maximum current value 120 [A] to the power receiving control section 131 as a current command value from the start of startup. The power reception control unit 131 takes into account the components and system characteristics of the wireless power supply device 102, and gradually increases the output current to a maximum current value 120 [A] at a speed at which the wireless power supply device 102 can be safely started. Raise. The non-contact charging control unit 117 does not care about this startup speed (exchange between the power receiving control unit 131 and the non-contact power supply device 102). The power reception control unit 131 sets the upper limit threshold value to 132 [A], which is 10% increase from 120 [A], and performs only a test whether the output current value does not exceed the upper limit threshold value.

  No check is made as to whether the output current value is below an acceptable lower threshold. That is, the non-contact charging control unit 117 does not care about the current start control in the non-contact power feeding, and the power reception control unit 131 leaves the current start control. The non-contact charging control section 117 performs only the command of the maximum current value and the monitoring of the upper threshold value.

  Here, the test is not performed to determine whether the value is below the allowable lower threshold value. However, the lower threshold value may be set and the test may be performed to determine whether the value falls below the lower threshold value. However, the lower limit threshold is set based on a criterion (second criterion) that is looser than the criterion in contact charging (first criterion). For example, while the first criterion is 10% of the maximum value 120 [A], the second criterion is 30% of the maximum value 120 [A]. In this case, whether the output current value is lower than a value obtained by subtracting 30% of the maximum value 120 [A] from the specified value specified for the non-contact power supply device 102 is checked. Thereby, it is possible to prevent a situation where the frequency frequently drops below the lower threshold value due to instability of wireless communication. The inspection described here may be performed by the power receiving control unit 131 instead of the non-contact charging control unit 117.

  With this configuration, at the time of non-contact charging, the non-contact charging control unit 117 does not need to notify the power receiving control unit 131 of the current command value in consideration of the components and system characteristics of the non-contact power supply device. The operation at the time of contact charging and the operation at the time of non-contact power reception can be implemented in substantially the same manner. That is, most of the software can be shared between the contact charging control and the non-contact charging control, and the change of the software can be suppressed to a small amount. Therefore, development costs can be reduced.

  FIG. 14 shows a supplementary explanatory diagram of the start-up control shown in FIG. FIG. 14 shows a configuration in which the contact power supply device 101 is omitted from the configuration of FIG. The non-contact charging control unit 117 notifies the power receiving control unit 131 of a message 1503 specifying the maximum value 120 [A] as the current command value every control cycle of 100 ms from the start of charging. The reason why the same value is notified in each control cycle is to match with the interface on the contact charging side. In the power receiving control unit 131 that has received the current command value, an algorithm for power startup (current startup) in consideration of the characteristics of the non-contact power feeding device 102 and the non-contact power receiving device 112 is mounted. The power reception control unit 131 performs transmission of a message 1507 specifying a current value with the non-contact power supply control unit 121 at a predetermined cycle (constant time interval), and performs current startup control. The predetermined cycle is described as Xmsec in the figure. Xmsec may be 100 msec, and may be larger or smaller. In addition, in response to the notified message, the receiving side may transmit a delivery acknowledgment message or generate another message accompanying the message. In this manner, a plurality of message exchanges relating to non-contact power supply are performed.

(Eleventh embodiment)
This embodiment is an embodiment relating to a transmission cycle of a message 1507 such as a current value designation notified from the power reception control unit 131 shown in FIG. 14 to the non-contact power supply control unit 121 on the power supply side.

  The exchange cycle of the message such as the current value designation can be set independently of the transmission cycle of the message 1503 such as the current command value notified from the non-contact charging control unit 117 to the power reception control unit 131. Regarding the transmission cycle of the message 1503 such as the current command value, in order to make the software design of the non-contact charging control section 117 and the contact charging control section 110 as identical as possible, the current command value for the contact power supply apparatus 101 (see FIG. 1) is set. It is the same as the message transmission cycle.

  Since the control line connecting the contact power supply device 101 and the contact charging control unit 110 is a wired cable, the communication quality is high and the error occurrence probability is low. Assuming the high communication quality, the interface between the contact power supply device 101 and the contact charging control unit 110 is designed. On the other hand, a wireless line is used between the non-contact power supply control unit 121 on the power supply side and the power reception control unit 131 on the vehicle side. Compared to a wired cable, a wireless line has a higher error occurrence probability and a lower communication quality due to the influence of external radio wave interference. If the communication quality is low, the stability of the charge control will be low.

  In the present embodiment, also in the case of non-contact power supply, in order to realize the same stability as contact power supply, the frequency of exchanging (1507) a message such as a current value designation from the power reception control unit 131 to the non-contact power supply control unit 121 ( That is, the transmission cycle) is changed according to the time from the start of the start-up control. Specifically, from the start of the start-up control, before reaching a predetermined target current value (or a predetermined target power value), a message such as a current value designation is transmitted in a short cycle. After reaching the predetermined target current value, a message such as a current value designation is transmitted at a longer cycle.

  FIG. 15 shows an example of a current transition diagram at the time of starting current in non-contact charging. In the example of FIG. 15, the current rises to the specified current command value (target current value) 120 A in about 6 seconds from the start of power supply by design. One point in the drawing corresponds to the output current value adjusted by one message notification. In view of the margin, the message is transmitted in a short cycle (400 msec) from the start of the startup to the lapse of 8 seconds. After eight seconds have elapsed, the message transmission cycle is changed to a longer cycle. Specifically, after the lapse of 8 seconds, the message is transmitted at a cycle of 2 seconds.

  As a comparative example, FIG. 16 shows an example of a current transition diagram when the message transmission cycle is fixed at a short cycle. In this example, a message is transmitted from the power reception control unit 131 to the non-contact power supply control unit 121 every 400 msec toward the specified current command value (target current value) 120A, and the output current is started.

  The quality of a wireless line is affected by noise and interference, and an error occurs stochastically. The quality is generally represented by an error rate or a frame error rate. Various error correction means have been devised to suppress this error, but the error that actually occurs is determined by the product of the average error rate and the number of trials (in this case, the number of message notifications). That is, if the number of message notifications is small, the absolute number of occurrences of errors will decrease. As shown in FIG. 15, at the time of the first current startup, the difference (increase) in the current value specified for each message is large, so that the message exchange is performed at a relatively high frequency. When the output current reaches the target current value and thereafter enters a stable charging period in which the output current value falls within a certain range, the adjustment of the output current is finely adjusted. In this case, a shorter message transmission cycle than at the time of startup is not required. Therefore, after reaching the target current value, the quality of the wireless channel can be equivalently improved by increasing the message transmission cycle and suppressing the absolute number of message exchanges.

  As in the present embodiment, the message transmission cycle is changed between when the current starts up and when the current is stable, and when the current is stable, the cycle is made longer to reduce the frequency of occurrence of errors, and is equivalent to that in the case of contact charging. Communication quality can be provided to the user.

(Twelfth embodiment)
FIG. 17 is a block diagram of the charging system according to the twelfth embodiment.

  The wireless power supply control unit 121 of the wireless power supply device 102 includes a wireless monitoring unit 1803 that monitors a wireless link (communication state). Similarly, the power receiving control unit 131 of the non-contact power receiving device 112 includes a wireless monitoring unit 1806 that monitors a wireless link (communication state). Other configurations are the same as those in FIG. Here, the contact power supply device 101 is not provided. The wireless monitoring units 1803 and 1806 may be configured by dedicated hardware circuits, or may be configured by a processor and software.

  Generally, when data transmission and control are performed via a wireless link, if disconnection of the wireless link is detected, retransmission of the data is performed, or stop processing is performed as an error. In this embodiment, when the disconnection of the wireless link is detected, the charging stop processing is not performed as an error, and the automatic recharging is performed between the non-contact power supply device 102 and the non-contact power receiving device 112. In particular, no error stop message is displayed on the non-contact charging operation unit 120 which is an interface with the user. To the user, charging appears to continue normally, without recognizing the disconnection of the wireless link. Here, the disconnection of the wireless link is dealt with. However, the disconnection of the wireless link is an example of a case where the communication state does not satisfy a predetermined criterion. The same processing as in the case of disconnection may be performed. For example, when a transmission error occurs continuously for a predetermined number of times, or when CSMA is used as a communication method, there is a case where interference is large and a transmission opportunity cannot be obtained (for example, a predetermined number of times cannot be continuously obtained). .

  FIG. 18 is an output current transition diagram according to the present embodiment. From the start of charging, current start-up control is performed using the current command value 1809 specified by the non-contact charging control section 117 as a target value (STEP 1: 1901).

  The wireless monitoring units 1803 and 1806 constantly monitor the wireless link and determine whether the wireless link is disconnected (whether the communication state satisfies a predetermined standard). For example, if no message is received from the partner device for 10 seconds, the wireless link is disconnected (STEP2: 1902).

  When the wireless link disconnection occurs, the non-contact power supply control unit 121 and the power reception control unit 131 respectively execute a predetermined abnormal charge termination process and suspend charging (STEP3, 1903). At this time, the power reception control unit 131 does not send an error notification to the non-contact charge control unit 117, and continues to send the same information to the non-contact charge control unit 117 as if the charge was not interrupted. However, since the actual power supply is stopped, the output current value measured by the non-contact charging control unit 117 becomes zero or a value close thereto. Here, if the lower threshold value is defined as shown in FIG. 12, a current value lower than the lower threshold value is detected, and the current can be processed as an error in the non-contact charging control unit 117. However, as shown in FIG. 13, by not performing comparison with the lower threshold value, the non-contact charge control unit 117 is not processed as an error. The power reception control unit 131 does not transmit an error stop message to the non-contact charging operation unit 120, similarly to the non-contact charging control unit 117.

  In the present embodiment, the error stop message is not transmitted to the non-contact charging control unit 117 and the non-contact charging operation unit 120. However, a “recharging” procedure is defined as the entire procedure, and the “recharging process” is defined for both. A message of "medium" may be transmitted.

  After the disconnection of the wireless link is detected (STEP2: 1902), the charge is terminated in the abnormal charge end process (STEP3: 1903), and then, a predetermined charge parameter required for recharging is initialized (STEP4: 1904). . Specifically, for example, a specified current value to be controlled in the start-up control, a message transmission cycle described in the eleventh embodiment, a timer for changing the message transmission cycle, or the like, Some parameters are initialized so that the current rise control performs the same operation as the current rise control at the start of charging. A fixed value parameter having a common value for recharging, such as a maximum charging time, a charging current maximum value, and a charging voltage maximum value, may be retained and used as it is without resetting.

  After the initialization is completed, the recharge current start-up control is performed in the same procedure as the start-up control in STEP 1 (STEP 5: 1905, STEP 6: 1906). At the time of this start-up control, it may be assumed that the communication state between the power reception control unit 131 and the non-contact power supply control unit 121 satisfies a predetermined standard. For example, a procedure for establishing a wireless link may be performed between the power reception control unit 131 and the non-contact power supply control unit 121, and if a wireless link can be established, it may be determined that a predetermined criterion is satisfied.

  The communication state (communication quality) is poor, and the wireless link may be disconnected again after the restart control. Therefore, a counter that measures how many times the restart control is performed within a certain period is provided in the power reception control unit 131 or the like. If the restart control is performed a predetermined number of times or more within that period, charging is stopped as a radio link error. Then, the power reception control unit 131 may also transmit a wireless link error message to the non-contact charging control unit 117 and the non-contact charging operation unit 120.

  In the present embodiment, even when the communication state does not satisfy a predetermined criterion, such as when the wireless link is disconnected during the execution of the non-contact charging, the charging is temporarily stopped without reminding the user of the fact and recharging is performed. Start up. As a result, even in non-contact charging using wireless communication, quality and stability close to contact charging can be obtained.

  Although the present embodiment has been described based on the other embodiments described above, a configuration similar to the present embodiment is applicable to a charging device that performs non-contact charging without performing contact charging. is there. FIG. 19 illustrates a charging system including a charging device that performs only non-contact charging and a non-contact power feeding device. There are no elements related to contact charging. The operation of each element may be the same as in the other embodiments described above, or a part of the operation may be changed. For example, the non-contact charging control unit 117 may transmit the target current value to the power receiving control unit 131 only once at a predetermined timing without transmitting the target current value at a predetermined cycle. Further, the switch 115 may not be provided. Changes other than those described here may be made. Also in the eleventh embodiment shown in FIG. 14, it is possible to omit the configuration for non-contact charging.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying constituent elements in an implementation stage without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of components disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Further, components of different embodiments may be appropriately combined.

100: vehicle charging device 101: contact power supply device 102: non-contact power supply device 103 (103A, 103B): power line 104: connector 105: inlet 106: power storage device 107: contact charging operation unit 108: contact power supply control unit 109 (109A, 109B): Control line 110: Contact charging control unit 111: Switch 112: Non-contact power receiving device 117: Non-contact charging control unit 118: BMU (battery management unit) 118
121: Non-contact power supply control unit 122: Rectifier circuit 123: High-frequency inverter 124: Power transmission side resonator 131: Power reception control unit 134: Power reception side resonator 132: Rectification circuit 133: DC-DC converter 125, 135: Antenna 401: Vehicle charge control unit 501: Non-contact charge control unit 502: Non-contact charge control module 503: Power reception control module 601: Charge control unit 602: Vehicle charge control module 603: Power reception control module 801: External power supply device 802: External charge operation unit 1004 (1004A, 1004B): control line 1005: control line 1006: switch 1101: connection terminal 1202: cover 1203: open / close sensor 1204: lock mechanism 1205: lock control unit 1803: wireless monitoring unit 1806: wireless monitoring unit

Claims (12)

A first charging control unit that controls contact charging to the power storage device by executing a first procedure using the contact power feeding control unit of the contact power feeding device connected via a wire and the first control signal;
A power reception control unit that controls power supply of the non-contact power supply device by performing a second procedure using wireless communication with the non-contact power supply control unit of the non-contact power supply device;
By executing the third procedure using the power reception control unit which is connected via a wired and a second control signal, and a second charging control section for controlling the non-contact charging of said power storage device,
At least a part of the third procedure is common to at least a part of the first procedure,
Wherein at least a portion of said second control signal is common to have a charging device with at least a portion of said first control signal.   At least a part of an interface of the first charge control unit to the contact power supply control unit is common to at least a part of an interface of the second charge control unit to the power reception control unit.
  The charging device according to claim 1.   At least a part of hardware or software of the first charge control unit related to an interface to the contact power supply control unit and at least a part of hardware or software of the second charge control unit related to an interface to the power reception control unit are common. Do
  The charging device according to claim 1. The power reception control unit receives an operation signal of a user, and performs at least one of a start and a stop of the non-contact charging based on the operation signal, and the procedure is common to a part of the first procedure. The charging device according to claim 1. The charging device according to claim 4 , further comprising a charging operation unit operated by the user to generate the operation signal. The power storage device, the first charge control unit, the second charge control unit, and the power reception control unit are installed on a moving body,
The charging device according to claim 4 , wherein the power reception control unit receives the operation signal from a charging operation unit installed outside the moving object via wireless communication. The power reception control unit is connected to the second charge control unit via a plurality of signal lines,
A switch that switches between conduction and non-conduction of the signal line is arranged on a part of the plurality of signal lines,
The charging device according to claim 1, wherein the power reception control unit turns off the switch when detecting that the contact charging is performed during the non-contact charging. The first charge control unit is configured to output the first control signal including each of a plurality of first command values that instruct the contact power supply device to gradually increase output power or output current at the start of charging, at a fixed time interval. Output with
The second charge control unit outputs, to the power reception control unit, the second control signal including a second command value instructing a target output power value or a target output current value,
The power reception control unit outputs, based on the second command value, a plurality of specified values, each of which specifies an output power or an output current, which gradually increases at the start of charging, to the contactless power supply device, at a predetermined time interval. The charging device according to claim 1. The first charge control unit is configured to determine whether the power value or the current value of the power received from the contact power supply device falls below a first lower threshold value set based on a first reference for the first command value. By judging whether or not the contact charging abnormality has occurred,
The power reception control unit or the second charging control unit does not determine whether the power value or the current value of the power received from the non-contact power supply device is below an allowable lower threshold, or The presence or absence of the occurrence of the non-contact charging abnormality is determined by determining whether or not the specified value is below a second lower threshold set by a second reference lower than the first reference. The charging device according to claim 8 . The first charge control section, the contactless power supply apparatus via a connector of the contact power feeding device detects that it is connected to the moving unit incorporating the electric storage device, connection of the contact power feeding device has been detected In the case, receiving power supplied from the contact power supply device, controlling contact charging to charge the power storage device ,
The third procedure includes a fourth procedure in which when the connection of the contact power supply device is detected, the second charging control unit controls the non-contact charging not to be performed or interrupted, and the fourth procedure includes: Is not included in the first procedure
The charging device according to claim 1 . The power storage device is mounted on a moving body,
Is connected to the connector contact power feeding device, provided with a closing sensor for monitoring the opening and closing of the cover of the connector of the movable body,
The second procedure, the second charging control section confirms the closing of the cover through the opening and closing sensor, when the cover is open, the non-contact charging is not performed or controlled to interrupt Including the fifth procedure
The charging device according to claim 1 . A lock control unit that controls a lock mechanism that locks a cover of the connector of the moving body,
The third procedure, before the non-contact charging is performed, the lock control unit controls the lock mechanism to lock the cover of the connector of the moving body, and during the non-contact charging, The charging device according to claim 11 , further comprising a sixth procedure for maintaining a locked state of the cover , wherein the sixth procedure is not included in the first procedure .

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