JP2009148108A - Vehicular non-contact charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular non-contact charger capable of properly charging a plurality of portable devices placed on a bearing unit of a vehicle. <P>SOLUTION: The vehicular non-contact charger includes the portable devices 1a and 1b each having a receiving coil 4, and a vehicular side charging unit 3 having a transmission coil 2. The vehicular side charging unit 3 has the device bearing unit 8 bearing the portable devices 1a and 1b placed thereon, and a current-passing control unit 9 which controls energizing current supplied to the transmission coil 2. The current-passing control unit 9 controls energizing current supplied to the transmission coil 2 in accordance with a charge completion signal transmitted from the portable devices 1a and 1b placed on the device bearing unit 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle non-contact charging device including a portable device having a power receiving coil and a vehicle side charging unit having a power transmitting coil.

Conventionally, as shown in Patent Document 1 below, a power receiving side coil, charging means for charging a power storage unit with charging power supplied via the power receiving side coil, and a predetermined signal via the power receiving side coil are provided. A charging side coil provided in the vicinity of the mounting portion in the vehicle interior for mounting a portable device (electrical device) having a transmitting means for transmitting, and a charging side on the portable device mounted on the mounting portion Only when the predetermined signal is received via the charging coil from the power supply means for supplying the charging power via the coil and the mobile device placed on the mounting portion, the signal transmitting source mobile device 2. Description of the Related Art There is known a vehicle charging apparatus including a power supply control unit that controls a power supply unit so that charging power is supplied via the charging side coil.
JP 2007-104868 A

  In the vehicular charging device disclosed in Patent Document 1, when a metal object or the like that does not emit a predetermined signal is placed on a placement portion in the vehicle interior, charging power is supplied from the power supply means. The power storage unit of the portable device is charged only by placing the portable device having the power-receiving-side coil on the mounting unit while preventing the occurrence of the situation where the metal object is heated by being stopped. It is possible.

  When a plurality of occupants boarding the vehicle each have an individual portable device, or when an occupant boarding the vehicle has a plurality of portable devices, a mounting portion provided in the vehicle interior It is desired that a plurality of portable devices can be placed on each other so that they can be charged at the same time. For this purpose, the power supplied from the power feeding means is used as the portable device placed on the placing portion. It is necessary to control appropriately according to the number. However, even if it is configured to control to simply increase / decrease the power supplied from the power supply unit according to the number of mobile devices placed on the placement unit, charging of a plurality of mobile devices is completed at the same time. However, there is a possibility that an excessive charging current may be supplied to other portable devices when charging to a specific portable device is completed.

  This invention is made in view of said point, and provides the non-contact-type charging device for vehicles which can charge appropriately with respect to the several portable apparatus mounted in the mounting part of a vehicle. It is an object.

  The invention according to claim 1 is a vehicle non-contact charging device including a portable device having a power receiving coil and a vehicle side charging unit having a power transmission coil, wherein the vehicle side charging unit includes a plurality of portable devices. A device placement unit on which the device is placed and an energization control unit that controls an energization current to the power transmission coil are provided, and the energization control unit is provided by a portable device placed on the device placement unit. It is comprised so that the energization current to the said power transmission coil may be controlled according to the transmitted charge completion signal.

  According to a second aspect of the present invention, in the non-contact charging device for a vehicle according to the first aspect, the energization control unit indicates that the engine is in a stopped state from an operation detecting means for detecting the operating state of the engine. When the detection signal is output, the power supply to the power transmission coil is stopped.

  The invention according to claim 3 is the vehicle contactless charging apparatus according to claim 1 or 2, wherein the storage means stores the identification symbol held by each portable device, and the identification symbol stored in the storage means. And a comparison means for comparing the identification symbol transmitted from the portable device placed on the device placement unit to determine whether or not both identification symbols match, provided in the vehicle-side charging unit, When it is determined by the comparing means that the two identification symbols match, energization of the power transmission coil is started.

  According to a fourth aspect of the present invention, in the vehicle non-contact charging apparatus according to any one of the first to third aspects, the charging completion signal is transmitted from the signal transmission unit provided in the portable device to the power receiving coil. And it is comprised so that it may transmit to an electricity supply control part via the power transmission coil of a vehicle side charging unit.

  The invention according to claim 5 is the vehicle non-contact charging apparatus according to any one of claims 1 to 3, wherein the charging completion signal connects the portable device and the vehicle-side charging unit. It is comprised so that it may transmit to the said electricity supply control part via the wireless connection means by the radio | wireless communication for.

  In the invention according to claim 1, since a plurality of portable devices can be placed on the device placement portion provided in the vehicle-side charging unit, a plurality of passengers who have boarded the vehicle individually carry, Alternatively, a plurality of portable devices possessed by a passenger boarding a vehicle are placed on the device placement portion provided in the passenger compartment and charged at the same time, whereby the charging operation can be performed efficiently. Since the configuration is such that the energization current to the power transmission coil is controlled in accordance with the charging completion signal transmitted from the portable device placed on the device placement unit, the charging for one of the portable devices is completed. At this point, there is an advantage that the energization current can be reduced to prevent an excessive charging current from being supplied to other portable devices.

  In the invention according to claim 2, when the detection signal that the engine is in the stopped state is output from the operation detecting means for detecting the operating state of the engine, the energization to the power transmission coil is stopped. Effective when the charging operation is continued and the power of the in-vehicle battery is wasted when the occupant gets off by stopping the operation of the engine with the portable device left on the device mounting portion. Can be prevented.

  In the invention according to claim 3, in the vehicle side charging unit, a storage means for storing an identification symbol held by each portable device, an identification symbol stored in the storage means, and a portable device placed on the device placement portion Comparing means for comparing the identification symbols transmitted from the device to determine whether or not both identification symbols match, and when the comparison means determines that the both identification symbols match, Since the device is configured to start energization, the power transmission coil is erroneously charged for charging even though a device that cannot be charged via the power transmission coil is mounted on the device mounting portion. There is an advantage that it is possible to effectively prevent the occurrence of a situation in which a current is applied.

  In the invention according to claim 4, since the charging completion signal is transmitted from the signal transmission unit provided in the portable device to the energization control unit via the power reception coil and the power transmission coil of the vehicle-side charging unit, Without providing a special communication means for performing communication between the device and the energization control unit, the energization control unit is informed that the charging of the portable device mounted on the device mounting unit is completed. There is an advantage that the energization current to the power transmission coil can be appropriately controlled.

  In the invention which concerns on Claim 5, without having a complicated operation of connecting the portable apparatus mounted on the said apparatus mounting part and a vehicle side charging unit using a connection cord, on the said apparatus mounting part. It is possible to notify the energization control unit that the charging of the portable device placed on is completed, and to appropriately control the energization current to the power transmission coil.

  FIG. 1 shows an embodiment of a vehicle non-contact charging apparatus according to the present invention. The non-contact charging device for a vehicle includes a plurality of portable devices 1a and 1b composed of a mobile phone, a portable recording / reproducing device or a PDA (Personal Digital Assistants) configured to be portable by an occupant, and the portable device 1a, The vehicle side charging unit 3 provided with the power transmission coil 2 for charging 1b is provided.

  The mobile devices 1a and 1b are charged by supplying a power receiving coil 4, a secondary battery 5 made of a lithium ion battery, and the like, and supplying power generated in the power receiving coil 4 to a secondary battery (storage battery) 5. The charging control unit 6 having a rectifier circuit, a charging control circuit, and the like, and a charging completion signal transmitted to the vehicle-side charging unit 3 when the charging control unit 6 confirms that the charging of the secondary battery 5 has been completed. And a signal transmission unit 7 for performing the operation.

  The signal transmission unit 7 has a function of transmitting individual identification symbols held by the portable devices 1 a and 1 b and the charging completion signal to the power transmission coil 2 of the vehicle-side charging unit 3 via the power receiving coil 4. Specifically, each signal is transmitted by applying a signal having a predetermined waveform corresponding to the identification symbol and the charging completion signal to the power receiving coil 4.

  The vehicle-side charging unit 3 includes a device mounting portion 8 formed of a tray-like body or the like that is provided on the upper surface portion of the center console and configured to mount the plurality of portable devices 1a and 1b. An energization control unit 9 for controlling the energization current to the power transmission coil 2 disposed below the storage unit 10 and a storage unit 10 for storing the identification symbols of the portable devices 1a and 1b input in advance via an input unit (not shown). And the identification symbol stored in the storage means 10 and the identification symbols output from the portable devices 1a and 1b on the device mounting portion 8 are compared to determine whether or not the two identification symbols match. Comparing means 11 is included.

  The energization control unit 9 reads from the storage means 10 the individual identification symbols held by the mobile devices 1a and 1b transmitted from the mobile devices 1a and 1b placed on the device placement unit 5. When it is determined that the outputted identification symbol matches with the comparison means 11, the current of the in-vehicle battery 12 is adjusted according to the determination signal output from the comparison means 11 so that the power transmission coil 2 is energized. It is configured.

  That is, the comparison unit 11 detects the waveform of a signal generated in the power transmission coil 2 in accordance with a signal having a predetermined waveform applied to the power reception coil 4 of each portable device 1a, 1b, thereby the device placement unit. 5 has a function of discriminating the type and number of portable devices 1a and 1b placed on the board. In addition, the energization control unit 9 calculates a current value necessary for charging the portable devices 1a and 1b based on the data read from the storage unit 10 according to the determination data of the comparison unit 11, and this value. The function of adjusting the value of the current supplied to the power transmission coil 2 from the in-vehicle battery 12 according to the above is provided.

  In addition, the energization control unit 9 determines which of the portable devices 1a and 1b is in a charging completed state in response to a charging completion signal transmitted from the portable devices 1a and 1b mounted on the device mounting unit 5. And has a function of controlling the energization current to the power transmission coil 2 according to the determination result. For example, the power necessary for charging the portable device 1a, 1b is output from the charging completion signal from the portable device 1a out of the two portable devices 1a, 1b, and the power necessary for charging the portable device 1a, 1b. When the energization control unit 9 confirms that this is equivalent to about 40% of the current, control for reducing the energization current to the power transmission coil 2 by 40% is executed.

  Furthermore, the energization control unit 9 is configured to detect the mobile device 1a, the mobile device 1a, when the operation detection unit 13 that detects the operation state of the engine according to the output signal of the ignition key switch detects that the engine is stopped. Regardless of whether or not a charging completion signal is transmitted from 1b, it has a function of stopping energization from the in-vehicle battery 12 to the power transmission coil 2.

  The control operation of the vehicle non-contact charging apparatus will be described based on the flowchart shown in FIG. When the control operation starts, a signal indicating that the portable devices 1a, 1b, etc. are mounted on the device mounting portion 5 by detecting the waveform of the signal generated in the power transmission coil 2 of the vehicle side charging unit 3. It is determined whether or not a position signal has been transmitted (step S1). If YES is determined, the identification symbol held by the portable device determined by the energization control unit 9 corresponding to the waveform of the signal By comparing (ID) with the identification symbol (ID) read from the storage means 10, it is determined whether or not both identification symbols match (step S2).

  When it is determined NO in step S1 and it is confirmed that there is no transmission of the placement signal, or NO is determined in step S2 and transmitted from the portable device placed on the device placement unit 5 The identification symbol and the identification symbol stored in the storage means 10 do not match, and a portable device or the like different from the previously registered portable devices 1a and 1b is placed on the device placement unit 5. If it is confirmed, the process returns without executing any control.

  On the other hand, when the determination in step S2 is YES, the identification symbol transmitted from the portable device 1a, 1b or the like placed on the device placement unit 8 is the identification symbol read from the storage means 10. When it is confirmed that they match, it is determined whether or not a plurality of portable devices 1a, 1b, etc. are mounted on the device mounting portion 8 (step S3). Performs energization control on the power transmission coil 2 so as to generate power corresponding to a single portable device placed on the device placement unit 8 (step S4).

  Next, it is determined according to the waveform of the signal generated in the power transmission coil 2 whether or not a charging completion signal is output from a single portable device placed on the device placement unit 5 (step S5), NO Is determined, it is determined whether or not the engine is stopped in accordance with the detection signal of the operation detection means 13 (step S6). If it is determined NO in step S6 and it is confirmed that the engine is in an operating state, the process returns to step S5 to determine again whether or not a charge completion signal is output.

  And when it determines with YES by the said step S5 and it is confirmed that the charge completion signal was output from the portable equipment 1a, 1b etc. which were mounted on the apparatus mounting part 5, or when said step S6 is YES If it is determined that the engine has been stopped, power supply to the power transmission coil 2 is stopped (step S7), and then the process returns.

  On the other hand, if it is determined as YES in step S3 and it is confirmed that a plurality of portable devices 1a, 1b, etc. are placed on the device placement portion 8, the placed portable devices 1a, 1b After performing energization control on the power transmission coil 2 so as to generate electric power corresponding to the number of the same (step S8), a charge completion signal is received from the portable devices 1a, 1b and the like placed on the device placement unit 5 Is determined according to the waveform of the signal generated in the power transmission coil 2 (step S9).

  When it is determined NO in step S9 and it is confirmed that the charging completion signal is not output from the portable devices 1a, 1b and the like placed on the device placement unit 5, the operation detection means 13 It is determined whether or not the engine is in a stopped state according to the detection signal (step S10). If it is determined NO in step S10 and it is confirmed that the engine is in an operating state, the process returns to step S9 to determine again whether or not a charge completion signal has been output. Thus, it is determined whether or not charging is completed for all of the portable devices 1a, 1b and the like placed on the device placement portion 5 (step S11).

  When it is determined that the charging is completed only for the specific mobile devices 1a and 1b placed on the device placement unit 5 as NO in step S11, correspondingly, After executing control for reducing the value of the energization current to the power transmission coil 2 (step S12), the process proceeds to step S10 to determine whether or not the engine is stopped. And when it is determined that the engine is in a stopped state by determining YES in step S10, or the portable device 1a that is determined YES in step S11 and placed on the device placement unit 5, When it is confirmed that charging has been completed for all of 1b and the like, the process proceeds to step S7 to stop energization of the power transmission coil 2 and then return.

  In the vehicle non-contact charging apparatus including the portable devices 1a and 1b having the power receiving coil 4 and the vehicle side charging unit 3 having the power transmission coil 2 as described above, the vehicle side charging unit 3 includes a plurality of A device placement unit 8 on which the portable devices 1a, 1b and the like are placed and an energization control unit 9 for controlling the energization current to the power transmission coil 2 are provided. Since the energization current to the power transmission coil 2 is controlled according to the charging completion signal transmitted from the portable devices 1a, 1b, etc. placed on the vehicle, a plurality of devices placed on the device placement unit 8 of the vehicle There is an advantage that the portable devices 1a, 1b, etc. can be charged properly.

  That is, since a plurality of portable devices 1a, 1b, and the like can be placed on the device placement portion 8 provided in the vehicle-side charging unit 3, a portable device that is individually possessed by a plurality of passengers boarding the vehicle, Alternatively, the charging operation can be performed efficiently by placing a plurality of portable devices possessed by a passenger in the vehicle on the device mounting portion 8 provided in the passenger compartment and charging them simultaneously. . And since it comprised so that the energization current to the said power transmission coil 2 might be controlled according to the charge completion signal transmitted from the portable apparatus 1a, 1b etc. which were mounted on the said apparatus mounting part 8, the said portable apparatus 1a , 1b, etc., when charging is completed, there is an advantage that the energization current can be reduced and an excessive charging current can be prevented from being supplied to other portable devices.

  Moreover, in the said embodiment, when the detection signal that the engine is in the stop state is output from the operation detection means 13 that detects the operation state of the engine, the energization from the in-vehicle battery 12 to the power transmission coil 2 is stopped. Since the control is performed in the energization control unit 9, the charging is performed when the occupant gets off by stopping the operation of the engine with the portable device 1a, 1b, etc. left on the device mounting unit 8. It is possible to effectively prevent the occurrence of a situation where the work is continued and the power of the in-vehicle battery 12 is wasted.

  Furthermore, in the said embodiment, the memory | storage means 10 which memorize | stores the identification symbol which each portable apparatus 1a, 1b etc. hold | maintain in the vehicle side charging unit 3, and the identification symbol memorize | stored in this memory | storage means 10, and the apparatus mounting part 8 Comparing means 11 for comparing the identification symbols transmitted from the mobile devices 1a, 1b and the like placed thereon to determine whether or not both identification symbols match is provided. Since it is configured to start energization of the power transmission coil 2 when it is determined that they match, a device or the like that cannot be charged via the power transmission coil 2 is placed on the device placement portion 8. Nevertheless, there is an advantage that it is possible to effectively prevent the occurrence of a situation in which a charging current is erroneously supplied to the power transmission coil 2.

  Further, as shown in the embodiment, the charging is completed from the signal transmission unit 7 provided in the portable devices 1a, 1b and the like to the energization control unit 9 via the power reception coil 4 and the power transmission coil 2 of the vehicle side charging unit 3. When configured to transmit a signal, a special communication means for performing communication between the portable devices 1a, 1b and the like and the energization control unit 9 is not provided on the device mounting unit 8. There is an advantage that the energization control unit 9 can be informed that the charging of the mounted portable devices 1a, 1b, etc. has been completed, and the energization current to the power transmission coil 2 can be appropriately controlled.

  Of course, the number of portable devices placed on the device placement unit 8 is not limited to two, but may be three or more. Further, instead of the above embodiment, for example, as shown in FIG. 3, the wireless communication device 16 provided in the audio unit 15 that outputs sound from the speaker 14, and the mobile device 1 c placed on the device placement unit 8. , 1d constitutes a wireless connection means 18 by short-distance wireless communication connected in the vehicle interior, and the charge completion signal transmitted through the wireless connection means 18 You may comprise so that it may transmit to the electricity supply control part 9.

  When configured as described above, the existing audio installed in the vehicle without having a complicated operation of connecting the portable devices 1c, 1d and the like to the vehicle-side charging unit 3 using a connection cord. By effectively using the unit 15 or the like, the energization control unit 9 is informed that the charging of the portable devices 1c, 1d and the like placed on the device placing unit 8 is completed, and the energization to the power transmission coil 2 is performed. There is an advantage that the current can be controlled appropriately.

It is a block diagram which shows embodiment of the non-contact-type charging device for vehicles which concerns on this invention. It is a flowchart which shows the control action of the said non-contact-type charging device for vehicles. It is a block diagram which shows another embodiment of the non-contact-type charging device for vehicles which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable apparatus 2 Power transmission coil 3 Vehicle side charging unit 4 Power receiving coil 6 Charging control part 7 Signal transmission part 8 Equipment mounting part 9 Current supply control part 10 Storage means 11 Comparison means 13 Operation | movement detection means 18 Wireless connection means

Claims (5)

  A vehicle non-contact charging apparatus including a portable device having a power receiving coil and a vehicle-side charging unit having a power transmission coil, wherein the vehicle-side charging unit has a plurality of portable devices mounted thereon. And an energization control unit that controls an energization current to the power transmission coil, the energization control unit according to a charge completion signal transmitted from the portable device placed on the device placement unit And a non-contact charging device for a vehicle, wherein the electric current supplied to the power transmission coil is controlled.   The energization control unit is configured to stop energization of the power transmission coil when a detection signal indicating that the engine is in a stopped state is output from an operation detection unit that detects an operating state of the engine. The non-contact charging device for a vehicle according to claim 1.   The vehicle-side charging unit includes a storage unit that stores an identification symbol held by each portable device, an identification symbol stored in the storage unit, and an identification symbol transmitted from the portable device placed on the device placement unit. And comparing means for determining whether or not both identification symbols match, and is configured to start energization of the power transmission coil when it is determined by the comparison means that both identification symbols match. The non-contact charging device for vehicles according to claim 1 or 2 characterized by things.   2. The charging completion signal is configured to be transmitted from a signal transmission unit provided in a portable device to an energization control unit via the power reception coil and a power transmission coil of a vehicle-side charging unit. The non-contact charging device for vehicles according to any one of to 3.   The charging completion signal is configured to be transmitted to the energization control unit via wireless connection means by short-range wireless communication for connecting a portable device and a vehicle-side charging unit. The non-contact charging device for vehicles according to any one of 1 to 3.

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