WO2017029736A1 - Dispositif de commande, dispositif de transmission d'énergie sans fil, et corps mobile - Google Patents

Dispositif de commande, dispositif de transmission d'énergie sans fil, et corps mobile Download PDF

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Publication number
WO2017029736A1
WO2017029736A1 PCT/JP2015/073273 JP2015073273W WO2017029736A1 WO 2017029736 A1 WO2017029736 A1 WO 2017029736A1 JP 2015073273 W JP2015073273 W JP 2015073273W WO 2017029736 A1 WO2017029736 A1 WO 2017029736A1
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WIPO (PCT)
Prior art keywords
control device
power transmission
power
sub
circuit
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PCT/JP2015/073273
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English (en)
Japanese (ja)
Inventor
芙美 杜塚
寛明 石原
小倉　浩嗣
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株式会社 東芝
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Application filed by 株式会社 東芝 filed Critical 株式会社 東芝
Priority to PCT/JP2015/073273 priority Critical patent/WO2017029736A1/fr
Priority to JP2017535198A priority patent/JP6416401B2/ja
Publication of WO2017029736A1 publication Critical patent/WO2017029736A1/fr

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  • Embodiments of the present invention relate to a control device, a wireless power transmission device, and a moving object.
  • a wireless power transmission device includes a coil for wireless power transmission, a power circuit connected to the coil, and a control device that controls the power circuit.
  • the control signal from the control device may be distorted due to the influence of the magnetic field from the coil or the harmonic noise from the switching element included in the power circuit, and the power circuit may malfunction.
  • control device a control device, a wireless power transmission device, and a moving body that can suppress the influence of noise.
  • a control device includes a main control device and a sub control device.
  • the main control device generates a control signal for controlling the power circuit connected to the coil for wireless power transmission.
  • the sub control device is connected to the main control device via the first communication cable, generates a pulse signal corresponding to the control signal, and inputs the pulse signal to the power circuit.
  • the communication method between the main control device and the sub control device is digital differential communication or optical communication.
  • a wireless power transmission system (hereinafter simply referred to as “system”) according to the first embodiment will be described with reference to FIGS.
  • the system which concerns on this embodiment can be utilized in order to charge the battery with which a mobile body is provided wirelessly.
  • the moving body is, for example, an electric car, a train, a tram, a ship, a submarine, an elevator, a robot, or a mobile device, but is not limited thereto.
  • Electric vehicles include passenger cars, buses, trucks and the like.
  • FIG. 1 is a diagram illustrating an example of a system according to the present embodiment. As shown in FIG. 1, this system includes a power transmission device 1 and a power reception device 2. In the example of FIG. 1, a system used for charging an electric vehicle is shown.
  • the power transmission device 1 is a wireless power transmission device that wirelessly transmits power to the power receiving device 2. As illustrated in FIG. 1, the power transmission device 1 includes a power transmission coil 11, a power transmission circuit 12, a control device 13, and a wireless device 14.
  • the power transmission coil 11 is a coil for wireless power transmission connected to the power transmission circuit 12.
  • the power transmission coil 11 is supplied with AC power from the power transmission circuit 12 and generates an AC magnetic field corresponding to the supplied AC power. Electric power is transmitted to the power receiving device 2 through the AC magnetic field generated by the power transmission coil 11.
  • the power transmission coil 11 may be a solenoid coil or a planar coil.
  • the power transmission circuit 12 is a power circuit connected to the power transmission coil 11, the control device 13, and the power source 4.
  • the power transmission circuit 12 is supplied with power from the power supply 4, converts the supplied power into predetermined AC power, and supplies the converted AC power to the power transmission coil 11.
  • the power transmission circuit 12 includes an AC / DC converter, a DC / DC converter, and the like. Switching elements of the AC / DC converter and the DC / DC converter are controlled by the control device 13.
  • the switching element is, for example, a MOS (Metal Oxide Semiconductor) transistor.
  • the power source 4 is, for example, a commercial power source, but is not limited thereto.
  • the power supplied by the power source 4 may be AC power or DC power.
  • the power supplied from the power source 4 is assumed to be AC power.
  • the control device 13 is connected to the power transmission circuit 12 and the wireless device 14.
  • the control device 13 receives information from the power receiving device 2 via the wireless device 14 and controls the power transmission circuit 12 based on the received information. Details of the control device 13 will be described later.
  • the wireless device 14 includes an antenna that transmits and receives wireless signals, and communicates with external devices wirelessly.
  • the wireless device 14 wirelessly communicates with the power receiving device 2 to receive information on the power receiving device 2 and the electric vehicle 3 and transmit information on the power transmitting device 1.
  • the wireless device 14 inputs the received information to the control device 13.
  • the power receiving device 2 is a wireless power transmission device that receives power from the power transmitting device 1 wirelessly.
  • the power receiving device 2 is mounted on an electric vehicle 3.
  • the electric vehicle 3 includes a battery 31, a BMU 32, an ECU 33, a user interface 34, and the power receiving device 2.
  • the battery 31 is a storage battery connected to the power receiving device 2 and the BMU 32.
  • the battery 31 is charged with DC power supplied from the power receiving device 2.
  • the battery 31 is, for example, a lithium battery, a hydrogen battery, or a fuel cell, but is not limited thereto.
  • a BMU (Battery Management Unit) 32 is connected to the battery 31 and the ECU 33 and manages the battery 31.
  • the BMU 32 is configured by a microcomputer, for example.
  • the BMU 32 acquires information on the battery 31 (hereinafter referred to as “battery information”), and inputs the acquired battery information to the ECU 33.
  • the battery information includes, for example, the operating state (charging or discharging) of the battery 31, SOC (State Of Charge), SOH (State Of Health), battery voltage, battery current, and error information.
  • the ECU (Electronic Control Unit) 33 is connected to the BMU 32, the user interface 34, and the power receiving device 2, and controls the electric vehicle 3, charge management, and charge control.
  • the ECU 33 is configured by a microcomputer, for example.
  • the ECU33 controls the drive of the motor of the electric vehicle 3 according to the input from an accelerator or a brake.
  • the ECU 33 acquires motor drive information from the electric vehicle 3. Further, the ECU 33 acquires battery information from the BMU 32 and inputs the acquired battery information and charge control command to the power receiving device 2. Furthermore, the ECU 33 inputs battery information, drive information of the motor of the electric vehicle 3, and the like to the user interface 34.
  • the ECU 33 may control charging of the electric vehicle 3 in accordance with a command input from the user interface 34, or is connected to a drive system of the electric vehicle 3, and the drive information of the electric vehicle 3 is transmitted from the drive system. The obtained drive information may be input to the power receiving device 2.
  • the user interface 34 is connected to the ECU 33 and the power receiving device 2.
  • the user interface 34 is composed of, for example, a display, a touch panel, and buttons.
  • a user of the electric vehicle 3 can input a command to the ECU and the power receiving device 2 by operating the user interface 34.
  • the user can start or end wireless power transmission or display battery information by operating the user interface 34.
  • the power receiving device 2 includes a power receiving coil 21, a power receiving circuit 22, a control device 23, and a wireless device 24.
  • the power receiving coil 21 is a wireless power transmission coil connected to the power receiving circuit 22.
  • the power receiving coil 21 generates AC power corresponding to the AC magnetic field generated by the power transmitting coil 11 and supplies the generated AC power to the power receiving circuit 22.
  • the power receiving coil 21 may be a solenoid coil or a planar coil.
  • the power receiving circuit 22 is a power circuit connected to the power receiving coil 21, the control device 23, and the battery 31.
  • the power receiving circuit 22 is supplied with AC power from the power receiving coil 21, converts the supplied AC power into predetermined DC power, and supplies the converted DC power to the battery 31. Thereby, the battery 31 is charged.
  • the power receiving circuit 22 includes an AC / DC converter, a DC / DC converter, and the like. Switching elements of the AC / DC converter and the DC / DC converter are controlled by the control device 23.
  • the switching element is, for example, a MOS transistor.
  • the control device 23 is connected to the power receiving circuit 22, the wireless device 24, the ECU 33, and the user interface 34.
  • the control device 23 transmits information input from the ECU 33 to the power transmission device 1 via the wireless device 24.
  • the control circuit 23 starts and ends wireless power transmission according to a command input from the user interface 34. Details of the control device 23 will be described later.
  • the wireless device 24 includes an antenna that transmits and receives wireless signals, and communicates with external devices wirelessly.
  • the wireless device 24 communicates wirelessly with the wireless device 14 of the power transmission device 1, transmits information on the power receiving device 2 and the electric vehicle 3, and receives information on the power transmission device 1.
  • the power receiving device 2 may be configured without the wireless device 24.
  • a radio device included in the electric vehicle 3 may be used instead of the radio device 24.
  • the control device 13 includes a main control device 15 and a sub control device 16.
  • the main control device 15 and the sub control device 16 are connected by a communication cable 17 (first communication cable) in a wired manner, and exchange signals using a predetermined communication method.
  • a communication method having high noise resistance is used as a communication method between the main control device 15 and the sub control device 16.
  • Such communication methods include digital differential communication and optical communication.
  • the communication method is digital differential communication
  • a twisted pair cable is used as the communication cable 17.
  • a digital differential signal is exchanged between the main control device 15 and the sub control device 16.
  • the digital differential signal is a set of two digital signals whose phases are inverted.
  • the communication method is optical communication
  • an optical cable is used as the communication cable 17.
  • An optical signal is exchanged between the main control device 15 and the sub control device 16.
  • the communication method is digital differential communication, and a digital differential signal is exchanged between the main control device 15 and the sub control device 16.
  • the main control device 15 generates a control signal for controlling the power transmission circuit 12 based on the information received via the wireless device 14.
  • This control signal is a signal that specifies a voltage value or a current value that is realized by an AC / DC converter or a DC / DC converter constituting the power transmission circuit 12.
  • the main control device 15 outputs the generated control signal as a digital differential signal.
  • the output control signal is input to the sub-control device 16 via the communication cable 17.
  • the main controller 15 includes, for example, a microcomputer, an FPGA (field-programmable gate array), a CPU (Central Processing Unit), and the like.
  • the main controller 15 is preferably installed at a position away from the power transmission coil 11 and the power transmission circuit 12.
  • the main control device 15 is preferably installed at a position farther from the power transmission coil 11 and the power transmission circuit 12 than the sub control device 16.
  • the sub-control device 16 generates a pulse signal corresponding to the control signal input from the main control device 15 via the communication cable 17.
  • This pulse signal is a signal that controls the opening / closing of the AC / DC converter and the switching circuit of the DC / DC converter constituting the power transmission circuit 12. More specifically, the pulse signal is a binary signal corresponding to ON and OFF of the switching element.
  • the sub control device 16 inputs the generated pulse signal to the power transmission circuit 12.
  • the switching element opens and closes according to the value of the input pulse signal.
  • the sub-control device 16 is configured by, for example, a microcomputer, FPGA, CPU, or the like.
  • the pulse signal may be, for example, a PWM (Pulse Width Modulation) signal, a PAM (Pulse Amplitude Modulation) signal, a PDM (Pulse Density Modulation) signal, a PPM (Pulse Position Modulation) signal, a PCM (Pulse Code Modulation) signal, or a PFM (Pulse Frequency). Modulation) signal, but not limited to this.
  • PWM Pulse Width Modulation
  • PAM Pulse Amplitude Modulation
  • PDM Pulse Density Modulation
  • PPM Pulse Position Modulation
  • PCM Pulse Code Modulation
  • PFM Pulse Frequency
  • the sub-control device 16 is preferably installed in the vicinity of the power transmission circuit 12. Thereby, the signal path
  • FIG. 2 is a diagram illustrating a specific example of the power transmission device 1 according to the present embodiment.
  • FIG. 2 shows a power transmission device 1 installed in a parking lot or the like for transmitting power to the electric vehicle 3.
  • the power transmission circuit 12, the control device 13 (the main control device 15, the sub control device 16, and the communication cable 17) and the radio device 14 are installed in a housing 18.
  • the sub control device 16 is installed in the vicinity of the power transmission circuit 12, and the main control device 15 is installed at a position farther from the power transmission circuit 12 than the sub control device 16.
  • the power transmission coil 11 is installed in the ground, it may be installed on the ground. Further, the power transmission circuit 12, the main control device 15, the sub control device 16, and the radio device 14 may be installed in different cases.
  • the power transmission circuit 12 may be installed in the ground.
  • the sub control device 16 may be installed in the ground together with the power transmission circuit 12 so that the signal path between the power transmission circuit 12 and the sub control device 16 is shortened.
  • the control device 23 has the same configuration as the control device 13. That is, the control device 23 includes a main control device 25 and a sub control device 26.
  • the main control device 25 and the sub control device 16 are connected to each other by a communication cable 27 (first communication cable), and exchange signals using a predetermined communication method.
  • a communication method having high noise resistance is used as a communication method between the main control device 25 and the sub control device 26.
  • Such communication methods include digital differential communication and optical communication.
  • the communication method is digital differential communication
  • a twisted pair cable is used as the communication cable 27.
  • a digital differential signal is exchanged between the main control device 25 and the sub control device 26.
  • the communication method is optical communication
  • an optical cable is used as the communication cable 27.
  • An optical signal is exchanged between the main control device 25 and the sub control device 26.
  • the communication method is digital differential communication, and a digital differential signal is exchanged between the main control device 25 and the sub control device 26.
  • the main control device 25 generates a control signal for controlling the power receiving circuit 22 based on information received through the wireless device 24 and information input from the ECU 33 and the user interface 34.
  • This control signal is a signal that specifies a voltage value or a current value that is realized by an AC / DC converter or a DC / DC converter constituting the power receiving circuit 22.
  • the main control device 25 outputs the generated control signal as a digital differential signal.
  • the output control signal is input to the sub-control device 26 via the communication cable 27.
  • the main control device 25 is composed of, for example, a microcomputer, FPGA, CPU, and the like.
  • the main control device 25 is preferably installed at a position away from the power receiving coil 21 and the power receiving circuit 22. Specifically, the main control device 25 is preferably installed at a position farther from the power receiving coil 21 and the power transmission circuit 22 than the sub control device 26. Thereby, it is possible to suppress the influence of noise such as the magnetic field from the power receiving coil 21 and the switching harmonics from the power receiving circuit 22 on the main control device 25.
  • the sub-control device 26 generates a pulse signal corresponding to the control signal input from the main control device 25 via the communication cable 27.
  • This pulse signal is a signal for controlling opening and closing of the switching circuit of the AC / DC converter and the DC / DC converter constituting the power receiving circuit 22. More specifically, the pulse signal is a binary signal corresponding to ON and OFF of the switching element.
  • the sub-control device 26 inputs the generated pulse signal to the power receiving circuit 22.
  • the switching element opens and closes according to the value of the input pulse signal.
  • the sub control device 26 is configured by a microcomputer, for example.
  • the pulse signal is, for example, a PWM signal, a PAM signal, a PDM signal, a PPM signal, a PCM signal, or a PFM signal, but is not limited thereto.
  • the sub control circuit 26 is preferably installed in the vicinity of the power receiving circuit 22. Thereby, the signal path between the sub-control device 26 and the power receiving circuit 22 is shortened, and the influence of noise on the pulse signal can be suppressed.
  • FIG. 3 is a diagram illustrating a specific example of the power receiving device 2 according to the present embodiment.
  • FIG. 3 shows the power receiving device 2 mounted on the electric vehicle 3.
  • the wireless device 24 is not shown.
  • the power reception coil 21, the power reception circuit 22, and the sub control device 26 are installed on the bottom surface of the vehicle body 35 of the electric vehicle 3. Thereby, the path
  • the main control device 25, the battery 31, the BMU 32, and the ECU 33 are installed at the rear portion of the vehicle body 35.
  • the rear portion of the vehicle body 35 is, for example, the back surface or the lower portion of the rear seat.
  • the user interface 34 is installed near the driver's seat.
  • the main control device 15 and the sub control device 26 are connected by a communication cable 27.
  • the main control device 25 is separated from the power receiving coil 21 and the power receiving circuit 22, so that the influence of noise on the main control device 25 can be suppressed.
  • the signal path between the power receiving circuit 22 and the sub-control device 26 is shortened, the influence of noise on the pulse signal can be suppressed.
  • the battery 31, BMU 32, and ECU 33 may be installed on the bottom surface of the vehicle body 35.
  • the main control device 25, the battery 31, the BMU 32, and the ECU 33 may be installed in the front part or the center part in the vehicle body 35, or may be installed in different parts.
  • control devices 13 and 23 are connected to the main control devices 15 and 25 that generate control signals, the main control devices 15 and 25 via the communication cables 17 and 27, and the control signals. And sub-control devices 16 and 26 that generate pulse signals corresponding to.
  • the main control devices 15 and 25 can be installed at positions away from the power circuit (the power transmission circuit 12 and the power reception circuit 22) and the coil (the power transmission coil 11 and the power reception coil 21). Therefore, the influence of noise on the main control devices 15 and 25 can be suppressed.
  • main control devices 15 and 25 and the sub control devices 16 and 26 communicate with each other by a communication method having high noise resistance. Therefore, even if the main control devices 15 and 25 and the sub control devices 16 and 26 are separated, the influence of noise on the control signals on the communication cables 17 and 27 can be suppressed.
  • the sub control circuits 16 and 26 are installed in the vicinity of the power circuit. Thereby, the influence of noise on the pulse signal on the signal path between the sub-control circuits 16 and 26 and the power circuit can be suppressed.
  • control devices 13 and 23 according to the present embodiment can suppress the influence of noise such as a magnetic field from the coil and switching harmonics from the power circuit, distortion generated in the control signal and the pulse signal is suppressed, The malfunction of the power circuit due to the distortion of the control signal or pulse signal is suppressed. Therefore, the control devices 13 and 23 according to the present embodiment can control the power circuit with high accuracy.
  • control devices 13 and 23 are constituted by the main control devices 15 and 25 and the sub control devices 16 and 26, the main control devices 15 and 25 and the sub control devices 16 and 26 are provided. Each can be miniaturized. Thereby, the freedom degree of arrangement
  • the cost of improving the environment resistance of the main control devices 15 and 25 and the cost for maintenance can be reduced.
  • the cost related to the main control device 25 can be reduced by installing the main control device 25 in the vehicle body 35.
  • the environment resistance of the sub-control devices 16 and 26 is higher than that of the conventional control device.
  • the cost to improve performance and the cost for maintenance can be reduced. This is because the sub-control devices 16 and 26 in the present embodiment can be miniaturized as compared with conventional control devices.
  • the conventional integrated control device when the conventional integrated control device is mounted on the electric vehicle 3, if the control device is installed in the vehicle body 35, the signal path of the pulse signal with low error resistance becomes long, so that the power circuit malfunctions due to the influence of noise. There is a fear. For this reason, in the conventional control device, it is necessary to install the entire control device on the bottom surface of the vehicle body 35 in order to suppress the influence of noise.
  • the control device when the control device is installed on the bottom surface of the vehicle body 35, a cost for protecting the control device from a collision of vibration, water, temperature, pebbles, etc. is generated. In the conventional control device, such protection is required for the entire control device, and thus the cost for improving the environmental resistance increases. On the other hand, since the sub-control devices 16 and 26 according to the present embodiment can be made smaller than conventional control devices, the cost for improving the environmental resistance as described above can be reduced.
  • FIG. 4 is a diagram illustrating an example of the power transmission device 1.
  • the power transmission circuit 12, the main control device 15, and the sub control device 16 will be described.
  • the power transmission circuit 12 includes an AC / DC converter 121, a DC / DC converter 122, an inverter 123, a monitor detection unit 124, and a gate drive circuit 125.
  • the AC / DC converter 121 is supplied with AC power from the power source 4, converts the supplied AC power into DC power, and supplies the converted DC power to the DC / DC converter 122.
  • the AC / DC converter 121 includes a switching element. The switching element of the AC / DC converter 121 is driven by the gate drive circuit 125.
  • the AC / DC converter 121 may include a power factor correction circuit, an AC transformer, or the like. Further, when the power supply 4 supplies DC power, the power transmission circuit 12 may not include the AC / DC converter 121. Further, the AC / DC converter may be a rectifier that does not include a switching element. In this case, the gate drive circuit 125 does not have to drive the AC / DC converter 121.
  • DC / DC converter 122 is supplied with DC power from AC / DC converter 121, converts the voltage of the supplied DC power into a predetermined voltage for power transmission, and supplies the converted DC power to inverter 123.
  • the DC / DC converter 122 includes a switching element. The switching element of the DC / DC converter 122 is driven by the gate drive circuit 125. When the power supply 4 supplies DC power, the DC power from the power supply 4 may be directly input to the DC / DC converter 122.
  • the inverter 123 is supplied with DC power from the DC / DC converter 122, converts it into AC current having a predetermined frequency, and supplies the converted AC power to the power transmission coil 11.
  • the inverter 123 includes a switching element.
  • the switching element of the inverter 123 is driven by the gate drive circuit 125.
  • a filter that allows a predetermined frequency to pass may be connected between the DC / DC converter 122 and the inverter 123 or between the inverter 123 and the power transmission coil 11.
  • the monitor detection unit 124 detects current values and voltage values input and output by the AC / DC converter 121, the DC / DC converter 122, and the inverter 123.
  • the current value and the voltage value detected by the monitor detection unit 124 are collectively referred to as a monitor value.
  • the monitor value is assumed to be an analog value.
  • the monitor detection unit 124 inputs the detected monitor value to an AD converter 161 described later.
  • the gate drive circuit 125 drives the switching elements of the AC / DC converter 121, the DC / DC converter 122, and the inverter 123 based on a PWM signal input from a PWM generation unit 153 described later.
  • a PWM generation unit 153 described later.
  • one gate driving circuit 125 is shown, but the power transmission circuit 12 includes three gate driving circuits 125 that drive the AC / DC converter 121, the DC / DC converter 122, and the inverter 123, respectively. May be provided.
  • the main control device 15 includes a control processing unit 151 and an I / F conversion unit 152.
  • the control processing unit 151 generates a control signal for controlling the power transmission circuit 12 based on the monitor value input via the sub-control device 16 and the information input via the wireless device 14, and Input to the F converter 152.
  • the I / F conversion unit 152 is a communication interface with the sub-control device 16 and is connected to an I / F conversion unit 162 described later via the communication cable 17.
  • the I / F conversion unit 152 converts the control signal input from the control processing unit 151 into a digital differential signal, and inputs the converted control signal to the power receiving device 16 via the communication cable 17.
  • the I / F conversion unit 152 converts the monitor value input via the communication cable 17 into a digital signal that can be processed by the control processing unit 151, and inputs the converted monitor value to the control processing unit 151.
  • the sub-control device 16 includes an AD converter 161, an I / F converter 162, and a PWM generator 163.
  • the AD converter (ADC) 161 receives the monitor value from the monitor detection unit 124, converts the input monitor value into a digital value, and inputs the converted monitor value to the I / F conversion unit 162. Note that, when the monitor detection unit 124 outputs the monitor value as a digital value, the sub-control device 16 may not include the AD converter 161.
  • the I / F conversion unit 162 is a communication interface with the main control device 15 and is connected to the I / F conversion unit 152 via the communication cable 17.
  • the I / F conversion unit 162 converts the monitor value input from the AD converter 161 into a digital differential signal, and inputs the converted monitor value to the main controller 15 via the communication cable 17.
  • the I / F conversion unit 162 converts the control signal input from the main control device 15 via the communication cable 17 into an analog signal, and inputs the converted control signal to the PWM generation unit 163.
  • the PWM generator 163 is a pulse generator that generates a PWM signal as a pulse signal.
  • the PWM generation unit 163 receives a control signal from the I / F conversion unit 162, generates a PWM signal based on the input control signal, and inputs the generated PWM signal to the gate drive circuit 125.
  • the gate drive circuit 125 drives the switching element based on the PWM signal, whereby the power transmission circuit 12 (AC / DC converter 121, DC / DC converter 122, and inverter 123) is controlled.
  • the sub-control device 16 uses, as a pulse generation unit, a PAM generation unit that generates a PAM signal, a PDM generation unit that generates a PDM signal, a PPM generation unit that generates a PPM signal, and a PCM signal instead of the PWM generation unit 163
  • a PCM generation unit that generates a PFM signal or a PFM generation unit that generates a PFM signal may be provided.
  • the sub-control device 16 can be reduced in size, and the mountability can be improved.
  • the sub-control device 16 may be provided separately from the power transmission circuit 12 or may be provided on the same substrate as the power transmission circuit 12. By providing the sub control device 16 and the power transmission circuit 12 on the same substrate, the signal path between the sub control device 16 and the power transmission circuit 12 can be further shortened, and the influence of noise can be further suppressed.
  • the digital differential signal may include an error detection code such as a parity bit.
  • an error detection code such as a parity bit.
  • the I / F converters 152 and 162 may monitor communication with each other and stop communication when an abnormality occurs in the communication.
  • the control signal is not input to the sub-control device 16, and thus the operation of the power transmission circuit 12 is stopped. Thereby, even if it is a case where abnormality arises in communication between the main control apparatus 15 and the sub control apparatus 16 by the influence of noise, the power transmission circuit 12 can be stopped.
  • FIG. 5 is a diagram illustrating another example of the power transmission device 1.
  • the main control device 15 includes a sensor 153 and an output device 154.
  • Other configurations are the same as those in FIG.
  • the sensor 153 inputs the sensing result to the control processing unit 151.
  • the sensor 153 is, for example, a temperature sensor that detects the temperature of the power transmission coil 11, a foreign object detection sensor that detects a foreign object on the power transmission coil 11, a position detection sensor that detects the position of the power receiving coil 21, and the like.
  • the main control device 15 may include one or more of the above sensors as the sensor 153.
  • the control processing unit 151 can control the power transmission circuit 12 based on the sensing result input from the sensor 153. For example, the control processing unit 151 may stop wireless power transmission when the temperature sensor detects that the temperature of the power transmission coil 11 has reached a predetermined value or more. The control processing unit 151 may stop wireless power transmission when a foreign object is detected on the power transmission coil 11 by the foreign object detection sensor. Further, the control processing unit 151 may start wireless power transmission when the power receiving coil 21 is disposed at a predetermined position with respect to the power transmitting coil 11 by the position detection sensor.
  • the output device 154 outputs information input from the control processing unit 151 as an image or sound.
  • the output device 154 includes, for example, a display panel, LEDs, lamps, speakers, and the like.
  • the output device 154 may output the state of wireless power transmission (preparation, execution, stoppage, etc.), or may output an abnormality detected by the sensor 153.
  • the state of wireless power transmission corresponds to the operating state of the power transmission circuit 12.
  • the sensor 153 and the output device 154 may be provided separately from the main control device 15. In this case, it is preferable that the sensor 153, the output device 154, and the main control device 15 are connected by a communication cable and communicate by a communication method with high noise resistance.
  • FIG. 6 is a diagram illustrating another example of the power transmission device 1.
  • the power transmission circuit 12 includes an AC / DC converter 121, two DC / DC converters 122a and 122b, two inverters 123a and 123b, a monitor detection unit 124, and a gate drive circuit 125. Prepare. In FIG. 6, the monitor detection unit 124 and the gate drive circuit 125 are not shown.
  • the AC / DC converter 121 supplies DC power to the DC / DC converters 122a and 122b, respectively.
  • the DC / DC converters 122a and 122b supply DC power to the inverters 123a and 123b, respectively.
  • the inverters 123a and 123b supply AC power to the power transmission coils 11a and 11b, respectively.
  • a single power transmission circuit 12 can supply AC power to the plurality of power transmission coils 11.
  • the power transmission circuit 12 may include two AC / DC converters 121, the DC / DC converters 122a and 122b may be shared, or the inverters 123a and 123b may be shared. Further, the power transmission circuit 12 may be capable of supplying AC power to three or more power transmission coils 11.
  • FIG. 7 is a diagram illustrating another example of the power transmission device 1.
  • the sub control device 16 includes a power transmission stop unit 164.
  • Other configurations are the same as those in FIG.
  • the power transmission stop unit 164 is connected to the control processing unit 151 via a communication cable 19 (second communication cable).
  • the communication cable 19 is a communication cable independent of the communication cable 17.
  • the power transmission stop unit 164 stops the operation of the power transmission circuit 12 when a stop signal is input from the control processing unit 151 via the communication cable 19.
  • the power transmission stopping unit 164 may stop the operation of the power transmission circuit 12 by stopping the operation of the gate drive circuit 125.
  • the power transmission stopping unit 164 may stop the operation of the power transmission circuit 12 by stopping the operation of the PWM generation unit 163 and stopping the output of the PWM signal.
  • the power transmission stop unit 164 stops the operation of the power transmission circuit 12 when the power transmission stop unit 164 stops the operation of the power transmission circuit 12, power transmission by the power transmission device 1 is stopped.
  • the power transmission stopping unit 164 may acquire the monitor value from the AD converter 161 and stop the operation of the power transmission circuit 12 when the monitor value is an abnormal value.
  • the stopping method is as described above.
  • the control processing unit 151 can stop the operation of the power transmission circuit 12 and stop the power transmission by the power transmission device 1. it can. Further, when an abnormality occurs in the power transmission circuit 12 and the monitor value becomes an abnormal value, the operation of the power transmission circuit 12 can be stopped and the power transmission by the power transmission device 1 can be stopped. Therefore, the safety of the power transmission device 1 can be improved.
  • FIG. 8 is a diagram illustrating an example of the power receiving device 2.
  • the power receiving circuit 22, the main control device 25, and the sub control device 26 will be described.
  • the power receiving circuit 22 includes an AC / DC converter 221, a DC / DC converter 222, a monitor detection unit 224, and a gate drive circuit 225.
  • the AC / DC converter 221 is supplied with AC power from the power receiving coil 21, converts the supplied AC power into DC power, and supplies the converted DC power to the DC / DC converter 222.
  • the AC / DC converter 221 includes a switching element. The switching element of the AC / DC converter 221 is driven by the gate drive circuit 225.
  • the AC / DC converter 221 may be a rectifier that does not include a switching element. In this case, the gate drive circuit 225 does not need to drive the AC / DC converter 221.
  • DC / DC converter 222 is supplied with DC power from AC / DC converter 221, converts the voltage of the supplied DC power into a predetermined voltage for charging, and supplies the converted DC power to battery 31. Thereby, the battery 31 is charged.
  • the DC / DC converter 222 includes a switching element. The switching element of the DC / DC converter 222 is driven by the gate drive circuit 225.
  • the monitor detection unit 224 detects at least one of a current value and a voltage value input / output by the AC / DC converter 221 and the DC / DC converter 222.
  • the current value and the voltage value detected by the monitor detection unit 224 are collectively referred to as a monitor value.
  • the monitor value is assumed to be an analog value.
  • the monitor detection unit 224 inputs the detected monitor value to an AD converter 261 described later.
  • the gate drive circuit 225 drives the switching elements of the AC / DC converter 221 and the DC / DC converter 222 based on the PWM signal input from the PWM generation unit 263 described later.
  • one gate driving circuit 225 is shown, but the power receiving circuit 22 may include two gate driving circuits 225 that drive the AC / DC converter 221 and the DC / DC converter 222, respectively. Good.
  • the main control device 25 includes a control processing unit 251 and an I / F conversion unit 252.
  • the control processing unit 251 generates a control signal for controlling the power receiving circuit 22 based on the monitor value input via the sub-control device 26 and the information input via the wireless device 24, and The data is input to the F conversion unit 252.
  • the I / F converter 252 is a communication interface with the sub-control device 26, and is connected to an I / F converter 262, which will be described later, via the communication cable 27.
  • the I / F conversion unit 252 converts the control signal input from the control processing unit 251 into a digital differential signal, and inputs the converted control signal to the power receiving device 26 via the communication cable 27. Further, the I / F conversion unit 252 converts the monitor value input via the communication cable 27 into a digital signal that can be processed by the control processing unit 251, and inputs the converted monitor value to the control processing unit 251.
  • the sub-control device 26 includes an AD converter 261, an I / F converter 262, and a PWM generator 263.
  • the AD converter (ADC) 261 receives the monitor value from the monitor detection unit 224, converts the input monitor value into a digital value, and inputs the converted monitor value to the I / F conversion unit 262. Note that, when the monitor detection unit 224 outputs the monitor value as a digital value, the sub-control device 26 may not include the AD converter 261.
  • the I / F conversion unit 262 is a communication interface with the main control device 25 and is connected to the I / F conversion unit 252 via the communication cable 27.
  • the I / F conversion unit 262 converts the monitor value input from the AD converter 261 into a digital differential signal, and inputs the converted monitor value to the main control device 25 via the communication cable 27. Further, the I / F conversion unit 262 converts the control signal input from the main control device 25 via the communication cable 27 into an analog signal, and inputs the converted control signal to the PWM generation unit 263.
  • the PWM generator 263 is a pulse generator that generates a PWM signal as a pulse signal.
  • the PWM generation unit 263 receives a control signal from the I / F conversion unit 262, generates a PWM signal based on the input control signal, and inputs the generated PWM signal to the gate drive circuit 225.
  • the gate driving circuit 225 drives the switching element based on the PWM signal
  • the power receiving circuit 22 AC / DC converter 221 and DC / DC converter 222
  • the sub-control device 26 as a pulse generation unit, instead of the PWM generation unit 263, a PAM generation unit that generates a PAM signal, a PDM generation unit that generates a PDM signal, a PPM generation unit that generates a PPM signal, and a PCM signal
  • a PCM generation unit that generates a PFM signal or a PFM generation unit that generates a PFM signal may be provided.
  • the sub-control device 26 can be downsized to improve the mountability.
  • the sub-control device 26 may be provided separately from the power receiving circuit 22 or may be provided on the same substrate as the power receiving circuit 22. By providing the sub control device 26 and the power receiving circuit 22 on the same substrate, the signal path between the sub control device 26 and the power receiving circuit 22 can be further shortened, and the influence of noise can be further suppressed.
  • the digital differential signal may include an error detection code such as a parity bit.
  • an error detection code such as a parity bit.
  • the I / F conversion units 252 and 262 may monitor communication with each other and stop communication when an abnormality occurs in the communication.
  • the control signal is not input to the sub-control device 26, so that the operation of the power receiving circuit 22 is stopped. Thereby, even if it is a case where abnormality arises in communication between the main control apparatus 25 and the sub control apparatus 26 by the influence of noise, the receiving circuit 22 can be stopped.
  • FIG. 9 is a diagram illustrating another example of the power receiving device 2.
  • the main control device 25 includes a sensor 253 and an output device 254.
  • Other configurations are the same as those in FIG.
  • the sensor 253 inputs the sensing result to the control processing unit 251.
  • the sensor 253 is, for example, a temperature sensor that detects the temperature of the power receiving coil 21 or the like, a foreign material detection sensor that detects a foreign material on the power receiving coil 21, a position detection sensor that detects the position of the power transmission coil 11, or the like.
  • the main control device 25 may include one or more of the above sensors as the sensor 253.
  • the control processing unit 251 can control the power receiving circuit 22 based on the sensing result input from the sensor 253. For example, the control processing unit 251 may stop wireless power transmission when the temperature sensor detects that the temperature of the power receiving coil 21 has reached a predetermined value or more. The control processing unit 251 may stop wireless power transmission when a foreign object is detected on the power receiving coil 21 by the foreign object detection sensor. Furthermore, the control processing unit 251 may start wireless power transmission when the power transmission coil 11 is disposed at a predetermined position with respect to the power reception coil 21 by the position detection sensor.
  • the output device 254 outputs information input from the control processing unit 251 as an image or sound.
  • the output device 254 includes, for example, a display panel, LEDs, lamps, speakers, and the like.
  • the output device 254 may output the state of wireless power transmission (preparing, executing, stopped, etc.), or may output an abnormality detected by the sensor 253.
  • the state of wireless power transmission corresponds to the operating state of the power receiving circuit 22.
  • the sensor 253 and the output device 254 may be provided separately from the main control device 25. In this case, it is preferable that the sensor 253, the output device 254, and the main control device 25 are connected by a communication cable and communicate by a communication method with high noise resistance.
  • FIG. 10 is a diagram illustrating another example of the power receiving device 2.
  • the power receiving circuit 22 includes two AC / DC converters 221a and 221b, two DC / DC converters 222a and 222b, a monitor detection unit 224, and a gate drive circuit 225.
  • the monitor detection unit 224 and the gate drive circuit 225 are not shown.
  • the two power receiving coils 21a and 21b supply AC power to the AC / DC converters 221a and 221b, respectively.
  • the AC / DC converters 221a and 221b supply DC power to the DC / DC converters 222a and 222b, respectively.
  • the DC / DC converters 222a and 222b supply DC power to the batteries 31a and 31b, respectively.
  • the power from the plurality of power receiving coils 21 can be charged to the plurality of batteries 31 by one power receiving circuit 22.
  • the AC / DC converters 221 a and 221 b may be shared, the DC / DC converters 222 a and 222 b may be shared, and the DC / DC converters 222 a and 222 b are connected to the same battery 31. You may charge.
  • the power receiving circuit 22 may be able to receive power from three or more power receiving coils 21 or may be able to charge three or more batteries 31.
  • FIG. 11 is a diagram illustrating another example of the power receiving device 2.
  • the sub control device 26 includes a power reception stopping unit 264.
  • Other configurations are the same as those in FIG.
  • the power reception stopping unit 264 is connected to the control processing unit 251 by a communication cable 29 (second communication cable).
  • the communication cable 29 is a communication cable independent of the communication cable 27.
  • the power reception stop unit 264 stops the operation of the power reception circuit 22 when a stop signal is input from the control processing unit 251 via the communication cable 29.
  • the power reception stopping unit 264 may stop the operation of the power reception circuit 22 by stopping the operation of the gate drive circuit 225. Further, the power reception stop unit 264 may stop the operation of the power reception circuit 22 by stopping the operation of the PWM generation unit 263 and stopping the output of the PWM signal. When the power reception stopping unit 264 stops the operation of the power reception circuit 22, the power reception by the power reception device 2 is stopped.
  • the power reception stopping unit 264 may acquire the monitor value from the AD converter 261 and stop the operation of the power reception circuit 22 when the monitor value is an abnormal value.
  • the stopping method is as described above.
  • the control processing unit 251 may stop the operation of the power receiving circuit 22 and stop power reception by the power receiving device 2. it can. Further, when an abnormality occurs in the power receiving circuit 22 and the monitor value becomes an abnormal value, the operation of the power receiving circuit 22 can be stopped and the power reception by the power receiving device 2 can be stopped. Therefore, the safety of the power receiving device 2 can be improved.
  • a wireless power transmission system according to the fourth embodiment will be described with reference to FIGS.
  • the wireless power transmission device including one sub control device and one power circuit has been described.
  • a wireless power transmission device 5 including a plurality of sub-control devices and / or power circuits will be described.
  • FIG. 12 is a diagram illustrating an example of the wireless power transmission device 5 according to the present embodiment.
  • the wireless power transmission device 5 includes two coils 51a and 51b, two power circuits 52a and 52b, a control device 53, and a wireless device 54.
  • the control device 53 includes a main control device 55, a sub control device 56, and a communication cable 57.
  • the power circuits 52a and 52b are connected to the coils 51a and 51b, respectively.
  • the power circuits 52a and 52b are controlled by one sub-control device 56, respectively.
  • FIG. 13 is a diagram illustrating another example of the wireless power transmission device 5 according to the present embodiment.
  • the control device 53 includes two sub-control devices 56a and 56b and two communication cables 57a and 57b.
  • Other configurations are the same as those in FIG.
  • the power circuits 52a and 52b are controlled by the sub-control devices 56a and 56b, respectively.
  • the sub-control devices 56a and 56b are connected to the main control device 55 via communication cables 57a and 57b, respectively.
  • the sub control devices 56a and 56b are controlled by one main control device 55, respectively.
  • FIG. 14 is a diagram illustrating another example of the wireless power transmission device 5 according to the present embodiment.
  • the control device 53 includes two sub control devices 56 a and 56 b and a communication cable 57.
  • Other configurations are the same as those in FIG.
  • the power circuits 52a and 52b are controlled by the sub-control devices 56a and 56b, respectively.
  • the sub control device 56 a is connected to the main control device 55 by the communication cable 57 and is controlled by the main control device 55.
  • the sub control device 57b is connected to the sub control device 56a via the communication cable 58, and is controlled by the main control device 55 via the sub control device 56a.
  • the communication cable 58 is a cable similar to the communication cable 57, and the sub-control devices 56a and 56b preferably communicate by digital differential communication or optical communication.
  • the wireless power transmission device 5 including a plurality of at least one of the power circuit 52 and the sub-control device 56 can be realized. 12 to 14, the wireless power transmission device 5 includes two coils 51, but may include three or more. In this case, the wireless power transmission device 5 may include at least one of the power circuit 52 and the sub control device 56.
  • the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.
  • various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. Further, for example, a configuration in which some components are deleted from all the components shown in each embodiment is also conceivable. Furthermore, you may combine suitably the component described in different embodiment.

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Le problème de la présente invention porte sur un dispositif de commande en mesure de supprimer l'influence du bruit, un dispositif de transmission d'énergie sans fil, et un corps mobile. Selon un mode de réalisation de la présente invention, la solution de l'invention porte sur un dispositif de commande pourvu d'un dispositif de commande principal, et un sous-dispositif de commande. Le dispositif de commande principal génère un signal de commande pour commander un circuit d'alimentation connecté à une bobine de transmission d'énergie sans fil. Le sous-dispositif de commande est connecté au dispositif de commande principal au moyen d'un premier câble de communication, génère un signal d'impulsion correspondant au signal de commande, et met en entrée le signal d'impulsion au circuit d'alimentation. Le système de communication entre le dispositif de commande principal et le sous-dispositif de commande est une communication différentielle numérique ou une communication optique.
PCT/JP2015/073273 2015-08-19 2015-08-19 Dispositif de commande, dispositif de transmission d'énergie sans fil, et corps mobile WO2017029736A1 (fr)

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PCT/JP2015/073273 WO2017029736A1 (fr) 2015-08-19 2015-08-19 Dispositif de commande, dispositif de transmission d'énergie sans fil, et corps mobile
JP2017535198A JP6416401B2 (ja) 2015-08-19 2015-08-19 制御装置、無線電力伝送装置、及び移動体

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PCT/JP2015/073273 WO2017029736A1 (fr) 2015-08-19 2015-08-19 Dispositif de commande, dispositif de transmission d'énergie sans fil, et corps mobile

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JP2020047766A (ja) * 2018-09-19 2020-03-26 株式会社豊田中央研究所 トランス、バッテリ充電装置およびコネクタ

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JP2013128400A (ja) * 2011-12-16 2013-06-27 Tdk Corp ワイヤレス給電装置、及び、ワイヤレス電力伝送システム
JP2013535815A (ja) * 2010-07-16 2013-09-12 ハンリム ポステック カンパニー リミテッド 無線電力通信用コアアセンブリ及びそれを備える無線電力通信用電力供給装置、並びに無線電力通信用コアアセンブリの製造方法
JP2015042081A (ja) * 2013-08-22 2015-03-02 株式会社豊田自動織機 送電装置及び非接触式送電機器

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JP2013535815A (ja) * 2010-07-16 2013-09-12 ハンリム ポステック カンパニー リミテッド 無線電力通信用コアアセンブリ及びそれを備える無線電力通信用電力供給装置、並びに無線電力通信用コアアセンブリの製造方法
JP2013128400A (ja) * 2011-12-16 2013-06-27 Tdk Corp ワイヤレス給電装置、及び、ワイヤレス電力伝送システム
JP2015042081A (ja) * 2013-08-22 2015-03-02 株式会社豊田自動織機 送電装置及び非接触式送電機器

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JP2020047766A (ja) * 2018-09-19 2020-03-26 株式会社豊田中央研究所 トランス、バッテリ充電装置およびコネクタ

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