WO2017101692A1 - Système et procédé d'alignement de charge sans fil, véhicule électrique et système de transmission de charge sans fil - Google Patents

Système et procédé d'alignement de charge sans fil, véhicule électrique et système de transmission de charge sans fil Download PDF

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Publication number
WO2017101692A1
WO2017101692A1 PCT/CN2016/108431 CN2016108431W WO2017101692A1 WO 2017101692 A1 WO2017101692 A1 WO 2017101692A1 CN 2016108431 W CN2016108431 W CN 2016108431W WO 2017101692 A1 WO2017101692 A1 WO 2017101692A1
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WIPO (PCT)
Prior art keywords
charging
alignment
electric vehicle
signal
guiding
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PCT/CN2016/108431
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English (en)
Chinese (zh)
Inventor
杨青春
王洁芳
周莹
郭昊
刘博�
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比亚迪股份有限公司
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Publication of WO2017101692A1 publication Critical patent/WO2017101692A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the invention belongs to the technical field of vehicles, and in particular relates to a wireless charging alignment system for an electric vehicle, and an electric vehicle, a wireless charging transmission system, and a wireless charging alignment method of the electric vehicle.
  • the wireless charging of electric vehicles is favored by more and more automobile manufacturers because of their safety and convenience.
  • the wireless charging transmitter and receiver of the electric vehicle require a relatively accurate alignment when charging. The more accurate the positioning position, the higher the charging efficiency of the wireless charging system, the smaller the heat generated during charging, and the less power loss, thereby saving energy. Avoid wasting energy.
  • the wireless charging system of an electric vehicle generally adopts a marking method to achieve the alignment of the electric vehicle and the wireless charging transmitting device.
  • draw some auxiliary positioning markings to help the electric vehicle to locate.
  • the marking line and the electric vehicle reference object coincide, it is considered that the electric vehicle and the wireless charging transmitting device have been positioned.
  • each reference line can only be used for one type of electric vehicle, and the other electric vehicle is replaced.
  • the above reference line is completely useless.
  • for the electric vehicle of the same model due to personal technical reasons, it is not possible to align once, and it takes several times to complete the alignment function, which wastes time and wastes resources.
  • environmental factors have a greater impact on the way of alignment. For example, heavy rain, haze and other weather, the markings cannot be clearly seen, and the alignment is more difficult.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention needs to provide a wireless charging alignment system for an electric vehicle, which has higher alignment accuracy and improved charging efficiency.
  • the invention also proposes an electric vehicle and a wireless charging transmission system.
  • the present invention further provides a wireless charging method for an electric vehicle.
  • an aspect of the present invention provides a wireless charging alignment system for an electric vehicle, the system comprising: a charging transmitting end, a charging guiding device and a charging alignment device, wherein the charging transmitting end, the charging guiding device and the charging matching device are both disposed in a charging parking space, and the charging guiding device generates a charging guiding signal,
  • the charging alignment device generates a charging alignment signal; a charging receiving end and a registration detecting device, the registration detecting device is configured to detect the charging guiding signal and the charging alignment signal; and the control device is receiving Acquiring a current operating parameter of the electric vehicle after the charging start signal, and generating a charging guidance control signal according to the current operating parameter and the charging guiding signal to control the electric vehicle to the charging pre-alignment position, and according to the Generating a charging alignment control signal to align the charging receiving end with the charging transmitting end; wherein the charging receiving end, the alignment detecting device, and the control device are respectively disposed on the On an electric vehicle, the
  • the electric vehicle wireless charging aligning system of the present invention by providing a charging guiding device and a charging aligning device in the charging parking space, a charging detecting device is provided on the electric vehicle, and the control device controls the automatic aligning executing device to operate according to the charging guiding signal. Guiding the electric vehicle to the charging pre-alignment position, and then generating a charging alignment control signal according to the detected charging alignment signal to align the charging receiving end with the charging transmitting end, thereby realizing the alignment control of the wireless charging, and delimiting the charging position Compared with the standard line method, the alignment accuracy is higher, the wireless charging efficiency is improved, the energy waste is reduced, and manual intervention is required without manual intervention.
  • the charging automatic alignment can be completed at one time, which is more convenient and time-saving, and is more suitable than the delineation method. More models.
  • an electric vehicle including: a charging receiving end; a registration detecting device, the registration detecting device is configured to detect a charging guiding signal and a charging alignment signal; and the control device
  • the control device acquires a current operating parameter of the electric vehicle after receiving the charging start signal, and generates a charging guidance control signal according to the current operating parameter and the charging guiding signal to control the electric vehicle to the charging pre-pair a bit position, and generating a charging alignment control signal according to the charging alignment signal to align the charging receiving end with a charging transmitting end in the charging parking space, wherein the charging receiving end is aligned with the charging transmitting end
  • the wireless charging signal transmitted by the charging transmitting end is then received to charge the power battery of the electric vehicle.
  • the charging guiding signal and the charging alignment signal are detected by the installation alignment detecting device, and the control device controls the charging guiding signal and the charging alignment signal respectively, thereby realizing automatic matching between the charging receiving end and the charging transmitting end.
  • the positioning is more precise, the charging efficiency is improved, and no manual intervention is required, and the alignment can be completed at one time, which is more convenient.
  • a further aspect of the present invention provides a wireless charging and transmitting system, comprising: a charging transmitting end, wherein the charging transmitting end transmits the wireless charging signal after being aligned with a charging receiving end; charging a guiding device, the charging guiding device generates a charging guiding signal; the charging matching device generates a charging alignment signal; the charging transmitting end, the charging guiding device and the matching device are all set in wireless charging Inside the parking space.
  • the wireless charging and transmitting system of the present invention by installing the charging guiding device and the charging alignment device in the charging parking space, the alignment is more accurate, the charging efficiency is improved, and the energy consumption is reduced as compared with the manner of delineating the marking. Compared with the way of delineating the marking line, it is less affected by environmental factors and adapts to a wider range of models.
  • the present invention provides, in one aspect, a method for wireless charging alignment of an electric vehicle, the method comprising the steps of: acquiring a current operating parameter of the electric vehicle after acquiring the charging start signal, and acquiring a charging guide signal; The current operating parameter and the charging pilot signal control operation of an automatic alignment executing device of the electric vehicle to guide the electric vehicle to a charging pre-alignment position; acquiring a charging alignment signal; controlling according to the charging alignment signal The automatic alignment performing device operates to align the charging receiving end and the charging transmitting end.
  • the automatic alignment control is realized according to the charging guiding signal and the charging alignment signal, and the alignment is more accurate and the charging efficiency is improved, and the charging efficiency can be completed at one time. Matching, no need to think of intervention, more convenient.
  • FIG. 1 is a block diagram of an electric vehicle wireless charging system in accordance with one embodiment of the present invention.
  • FIG. 2 is a block diagram of an electric vehicle wireless charging system in accordance with another embodiment of the present invention.
  • FIG. 3 is a schematic view showing the arrangement of a registration detecting device according to an embodiment of the present invention.
  • FIG. 4 is a schematic view showing the arrangement of a charging guiding device and a charging alignment device according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an output signal waveform of a magnetic induction detecting unit according to still another embodiment of the present invention.
  • FIG. 6 is a block diagram of an electric vehicle side in accordance with one embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing the alignment display of a charging transmitting end and a charging receiving end according to an embodiment of the present invention
  • FIG. 8 is a block diagram of an electric vehicle in accordance with one embodiment of the present invention.
  • FIG. 9 is a block diagram of an electric vehicle in accordance with another embodiment of the present invention.
  • FIG. 10 is a block diagram of an electric vehicle in accordance with still another embodiment of the present invention.
  • FIG. 11 is a block diagram of a wireless charging transmission system in accordance with one embodiment of the present invention.
  • FIG. 12 is a flow chart of a method of wireless charging alignment of an electric vehicle according to an embodiment of the present invention.
  • FIG. 13 is a flow chart of a method of wireless charging alignment of an electric vehicle in accordance with an embodiment of the present invention.
  • the present invention provides a wireless vehicle wireless charging and positioning system, which can improve the accuracy of charging alignment, improve wireless charging efficiency, and save energy.
  • the wireless charging alignment system 100 includes a charging receiving end 10, a registration detecting device 20, and a charging transmitting end. 30.
  • the charging receiving end 10, the registration detecting device 20, and the control device 60 are all located on the electric vehicle 200, and may be mounted as standard before the electric vehicle 200 is shipped, or may be installed after the electric vehicle 200 is shipped.
  • the charging transmitting end 30, the charging guiding device 40 and the charging and collating device 50 are all disposed in the charging parking space, that is, the electric vehicle 200 needs to be parked into the charging parking space for charging.
  • the charging transmitting end 30 transmits a wireless charging signal after being aligned with the charging receiving end 10, the charging guiding device 40 generates a charging guiding signal, and the charging matching device 50 generates a charging alignment signal.
  • the charging receiving end 10 is configured to receive a wireless charging signal to charge the power battery of the electric vehicle 200
  • the registration detecting device 20 is configured to detect the charging guiding signal and the charging alignment signal.
  • the charging guide signal can be understood as a signal for guiding the electric vehicle 200 into a suitable charging area
  • the charging registration signal can be understood as a signal for realizing the alignment of the charging receiving end 10 and the charging transmitting end 30.
  • the control device 60 acquires the current operating parameters of the electric vehicle 200 after receiving the charging start signal, and the control device 60 generates a charging guidance control signal according to the current operating parameter and the charging guide signal to control the electric vehicle 200 to the charging pre-alignment position, and according to the charging The charging signal generates a charging alignment control signal to align the charging receiving end 10 with the charging transmitting terminal 30.
  • the electric vehicle wireless charging aligning system of the present invention by providing a charging guiding device and a charging aligning device in the charging parking space, a charging detecting device is provided on the electric vehicle, and the control device controls the charging guiding signal and the charging aligning signal according to
  • the charging receiving end is aligned with the charging transmitting end to realize the alignment control of the wireless charging, and the alignment precision is higher than the method of delineating the marking line in the charging parking space, thereby improving the wireless charging efficiency, reducing energy waste, and eliminating manual intervention.
  • the charging can be automatically aligned in one time, which is more convenient and time-saving, and more models are applied than the delineating method.
  • the system 100 further includes an automatic alignment executing device 70, such as an automatic driving system or an automatic parking system of the electric vehicle 200.
  • the control device 60 controls the automatic alignment executing device 70 to guide the electric vehicle according to the charging guidance control signal. 200 to the charging pre-alignment position, for example, guiding the position of the electric vehicle 200 to the charging transmitting end 30 and the charging receiving end 10, that is, the position where the center lines of the two coincide, and further, the control device 60 controls according to the charging registration control signal.
  • the automatic alignment device 70 is arranged to align the charging receiving end 10 with the charging transmitting end 30. It can be seen that in the charging pre-alignment position, the electric vehicle 200 only needs to go straight. The automatic alignment of the charging receiving end 10 and the charging transmitting end 30 is achieved.
  • the charging activation signal may be sent through the start button, or the control device 60 detects that the reverse signal, that is, the vehicle stop signal is R.
  • the charging detecting device 20 detects the charging signal installed in the charging parking space, including the charging guiding signal and the charging registration signal, and the control device 60 according to the data transmitted by the charging detecting device 20 and the current state of the electric vehicle 200
  • the operating state parameter is calculated and fitted into the running route of the electric vehicle 200, and the route data is transmitted to the automatic alignment executing device 70 such as an automatic driving system or an automatic parking system through the data interface, and then the automatic alignment executing device 70 according to the route
  • the data automatically travels until the control signal of the completion of the alignment is received, and the automatic alignment is performed during wireless charging.
  • the charging transmitter 30 transmits a charging signal to the charging receiving terminal 10 to implement wireless charging.
  • the electric vehicle wireless charging aligning system 100 of the embodiment of the present invention provides a charging detecting device 20 on the electric vehicle 200 by providing a charging guiding device 40 and a charging aligning device 50 in the charging parking space, and the control device 60 controls according to the charging guiding signal.
  • the automatic registration executing device 70 operates to guide the electric vehicle to the charging pre-alignment position, thereby controlling the automatic alignment of the wireless charging by the automatic registration executing device 70 according to the detected charging alignment signal, and delineating the marking line in the charging parking space.
  • the alignment accuracy is higher, the wireless charging efficiency is improved, the energy waste is reduced, and manual intervention is not required, and the automatic alignment of the charging can be completed at one time, which is more convenient and time-saving, and more applicable than the delineation method.
  • the charging receiving end 10 and the charging detecting device 20 are respectively disposed on the chassis 01 of the electric vehicle, and correspondingly, as shown in FIG. 4, the charging transmitting end 30, the charging guiding device 40, and the charging collating device 50 are disposed. On the ground of the charging parking space.
  • the alignment detecting device 20 includes N magnetic sensing detecting units 21, which are uniformly disposed around the charging receiving end 10 and form concentric circles with the center of the charging receiving end 10.
  • N is a positive integer greater than or equal to 3
  • the number of magnetic sensing units 21 may be set according to a specific case or accuracy of charging alignment.
  • the wireless charging alignment system 100 can be activated by the charging activation device.
  • the charging registration start button and the control device 60 are both installed inside the electric vehicle 200, and the control device 60 is connected to the communication bus of the automobile through the communication interface. Data exchange and transfer via the communication bus.
  • the control device 60 acquires current operating parameters of the electric vehicle 200, such as start, speed, direction, presence or absence of braking, etc. from the ECU and other units of the electric vehicle 200, and transmits the current operating parameters and the alignment detecting device 20
  • the detection data is analyzed and calculated, and it is found that the control state parameter of the electric vehicle 200 is transmitted to the automatic driving system 71 or the automatic parking system 72 to complete the wireless charging alignment system 100. Automatic alignment.
  • the charging parking space in which the wireless charging transmitting system is located includes a guiding area and a matching area, wherein a charging guiding device 40 can be installed in the guiding area, and the charging guiding device 40 includes a guiding permanent magnet 41 for guiding the permanent magnet 41.
  • the charging guiding device 40 includes a guiding permanent magnet 41 for guiding the permanent magnet 41.
  • the magnetic induction detecting unit 21 of the charging registration detecting device 20 detects the electromagnetic strength of the guiding permanent magnet 41. According to the distribution of the magnetic sensing unit 21 and the charging guiding device 40, the detected magnetic induction signal may be different depending on the position of the electric vehicle 200.
  • the control device 60 can determine the position of the electric vehicle 200, and then adjust the electric vehicle 200 to the charging pre-alignment position, that is, the charging receiving end 10 and the charging transmitting end 30 are in the right position. .
  • the shape of the guiding permanent magnet 41 may be one of a herringbone shape, an isosceles triangle, and an isosceles trapezoid.
  • the permanent magnet 41 may also be other capable of realizing the state in which the charging transmitting end 30 and the charging receiving end 10 are facing each other. Shape, such as an arc. As shown in FIG.
  • the two branches of the chevron are symmetrical with respect to the central axis of the charging transmitting end 30; for the isosceles triangular permanent magnet 41, the two waists of the isosceles triangle are opposite to The central axis of the charging transmitting end 30 is symmetrical; for the isosceles trapezoidal permanent magnet 41, the two waists of the isosceles trapezoid are symmetrical with respect to the central axis of the charging transmitting end 30; it is understood that the two symmetrical guiding permanent magnets 41 are The branches tend to intersect toward the charging transmitting end 30, so that the facing state with the charging transmitting end 30 can be better achieved.
  • the charging detecting device 20 includes three magnetic sensing units 21 as an example. As shown in FIG. 3, the magnetic sensing unit 21 (1#) and the magnetic sensing unit 21 (2#) are shown. It is used to detect whether the central axis of the charging receiving end 10 and the central axis of the charging transmitting end 30 coincide. For example, when the electric vehicle is in the leftward position, the control device 60 can determine the left and right deviation according to the strength of the two magnetic fields, and then control The automatic registration executing device 70 moves to make adjustments.
  • the magnetic induction detecting unit 21 outputs a waveform signal as shown in FIG. 5, for example, when the waveform is in the positions a1 and b1, the positional deviation of the current electric vehicle is proved. On the left side, it needs to move to the right. Similarly, when the waveform is at the positions b2 and a2, it proves that the position of the current electric vehicle 200 is biased to the right side and needs to move to the left.
  • the waveform When the waveform is in the positions b1 and b2, it indicates that the movement is at Just above the permanent magnet 41 of the charging guide 40, only a small amount of left and right movement is required, so that the waveform signal is at the c position, indicating that it is just aligned.
  • the magnetic sensing unit 21 (1#) and the magnetic sensing unit 21 (2#) are symmetrical with respect to the magnetic sensing unit 21 (3#), when the waveform signals detected by 1# and 2# are at the c position, Then, the waveform signal outputted by the magnetic induction detecting unit 21 (3#) is also at the c position, that is, the position where the detected magnetic induction intensity is the strongest, indicating that the pilot alignment is completed, and the electric vehicle 200 moves to the charging pre-alignment position.
  • charging alignment The set 50 includes N permanent magnet units 51, which are disposed corresponding to the N magnetic sense detecting units 21, and the N permanent magnet units 51 are uniformly disposed around the charging transmitting end 30 and at the center of the charging transmitting end 30. Form a concentric circle.
  • the charging alignment device 50 includes three permanent magnet units 51, and the three permanent magnet units 51 in the alignment area and the magnetic induction detecting unit 21 on the electric vehicle 200 are correspondingly disposed.
  • the mounting radius is exactly the same, and the angle between the three permanent magnet units 51 is also 120°.
  • the permanent magnet is used in the charging parking space to assist the positioning, and the construction is simple and convenient, no need to introduce the power cord, and the charging transmitting end 30, the charging guiding device 40 and the charging alignment device 50 can be covered with cement or other non-magnetic materials or non-metal materials.
  • the maintenance and replacement is more convenient, just replace the damaged part, because there is no electrical connection. Therefore, it is less affected by environmental factors such as haze, rain, snow and dust.
  • the alignment state of the charging transmitting end 30 and the charging receiving end 10 can also be displayed by a display device 80, such as a multimedia display system, provided on the electric vehicle.
  • a display device 80 such as a multimedia display system, provided on the electric vehicle.
  • 7 is a schematic diagram of display by the display device 80, wherein the shaded portion is an alignment coincidence state of the charging transmitting end 30 and the charging receiving end 10, and some errors and suggestions may also be displayed.
  • the user can also stop the automatic alignment system 100 to operate, perform manual alignment by itself, and perform parameter optimization processing such as calibration and correction on some parameters of the system 100 through the multimedia display system, and the control device 60 can align according to the history of the user.
  • the operation information corrects the parameters of the automatic registration system 100 to ensure the system's stronger adaptability and self-learning ability.
  • the working process of the electric vehicle wireless charging alignment system 100 of the embodiment of the present invention is: when the vehicle is engaged in the reverse gear, that is, the R gear or the start button of the wireless charging registration system 100 is pressed. At this time, the wireless charging registration system 100 is activated.
  • the magnetic induction detecting unit 21 of the registration detecting device 20 mounted on the electric vehicle chassis 01 is turned on, and detects the magnetic signal of the guiding permanent magnet 41 of the charging guiding device 40 installed in advance at the ground position, and the control device 60 sets the magnetic signal strength.
  • the direction in which the electric vehicle 200 needs to move is fitted to the automatic parking system 72 of the electric vehicle 200 or the automatic driving system 71 and the display device 80 via the communication interface 03.
  • the automatic parking system 72 or the automated driving system 71 automatically controls the vehicle to approach the wireless charging transmitter 30 based on the data of the control device 60.
  • the electric vehicle automatically calibrates the direction and enters the registration entrance by the charging guide 40.
  • the electric vehicle 200 automatically continues to travel straight into the alignment area, when the magnetic induction detecting unit 21 on the electric vehicle, for example, the magnetometer and the charging position on the charging position
  • the permanent magnet unit 51 of the device 50 is positioned correctly, and the strength of the three magnetometers is the strongest, and when they are nearly equal, the wireless charging alignment system 100 is aligned.
  • the control device 60 transmits a parking signal of the car, the electric vehicle stops, and the wireless charging receiving end 10 starts. Charging.
  • the alignment state displayed by the display device 80 on the electric vehicle is the overlap of the alignment.
  • FIG. 8 is a block diagram of an electric vehicle 200 according to an embodiment of the present invention. As shown in FIG. 8, the electric vehicle 200 includes a charging receiving end 10 and alignment detection. Device 20 and control device 60.
  • the charging receiving end 10 is configured to receive a wireless charging signal to charge the power battery 90 of the electric vehicle 200, and the registration detecting device 20 is configured to detect the charging guiding signal and the charging alignment signal.
  • the control device 60 acquires the current operating parameters of the electric vehicle 200 after receiving the charging start signal, and generates a charging guidance control signal to control the electric vehicle 200 to the charging pre-alignment position based on the current operating parameters and the charging pilot signal.
  • the control device 60 generates a charging alignment control signal based on the charging alignment signal to align the charging receiving terminal 10 with the charging transmitting terminal 30.
  • the charging guiding signal and the charging registration signal are detected by the installation alignment detecting device 20, and the control device 60 controls the automatic registration executing device 70 to operate according to the charging guiding signal and the charging registration signal, respectively.
  • the automatic alignment of the charging receiving end 10 and the charging transmitting end is realized, and the alignment is more accurate, the charging efficiency is improved, and the charging efficiency can be improved without manual intervention, and the alignment can be completed at one time, which is more convenient.
  • the electric vehicle 200 further includes an automatic registration executing device 70 that controls the automatic alignment executing device 70 to guide the electric vehicle 200 to the charging pre-alignment position according to the charging guidance control signal, and according to the charging alignment control.
  • the signal control automatically aligns the actuator 70 to align the charging receiver 10 with the charging transmitter 30 to achieve automatic alignment.
  • the alignment detecting device 20 includes N magnetic sensing detecting units 21, and the N magnetic sensing detecting units 21 are uniformly disposed around the charging receiving end 10 and form concentric circles with the center of the charging receiving end 10.
  • N is an odd number greater than or equal to 3.
  • the charging receiving end 10 and the charging detecting device 20 are respectively disposed on the chassis 01 of the electric vehicle 200.
  • N 3
  • the angle between the adjacent magnetic induction detecting units 21 is 120°.
  • the electric vehicle 200 further includes a display device 80, such as a multimedia display system, for displaying the alignment state of the charging transmitting end and the charging receiving end 10, as shown in FIG.
  • the starter 81 receives the operation command from the user, the starter 81 outputs a charge start signal, and the electric vehicle 200 automatically performs the charge-aligned travel.
  • the wireless charging transmission system 300 includes a charging transmitting end 30, a charging guiding device 40, and a charging alignment device 50, and a charging transmitting end 30, charging. Both the guiding device 40 and the charging alignment device 50 are disposed within the wireless charging parking space.
  • the charging transmitting end 30 transmits a wireless charging signal after being aligned with the charging receiving end; the charging guiding device 40 generates a charging guiding signal; and the charging matching device 50 generates a charging alignment signal.
  • the wireless charging transmitting system 300 by installing the charging guiding device 40 in the charging parking space Compared with the charging alignment device 50, the alignment is more accurate, the charging efficiency is improved, and the energy consumption is reduced. Compared with the way of delineating the marking line, it is less affected by environmental factors and adapts to a wider range of models.
  • the charging transmitting end 30, the charging guiding device 40, and the charging aligning device 50 are disposed on the ground of the wireless charging parking space.
  • the charging transmitting end 30, the charging guiding device 40 and the charging alignment device 50 can cover the non-magnetic material or the non-metal material, the parking space surface has no traces, and the maintenance and replacement is more convenient, and only the damaged part can be replaced. Because there is no electrical connection. Therefore, it is less affected by environmental factors such as haze, rain, snow and dust.
  • the charging guide device 40 includes a guiding permanent magnet 41 having two portions that are symmetrical with respect to the central axis of the charging transmitting end 30, the two portions being non-parallel.
  • the shape of the guiding permanent magnet 41 may be, but not limited to, one of a chevron shape, an isosceles triangle, and an isosceles trapezoid. As shown in FIG. 4, the guiding permanent magnet 41 is a herringbone shape.
  • FIG. 12 is a flow chart of a method of wireless charging alignment of an electric vehicle according to an embodiment of the present invention. As shown in FIG. 12, the method includes the following steps:
  • the automatic alignment control is realized according to the charging guiding signal and the charging alignment signal, and the alignment is more accurate and the charging efficiency is improved compared with the method of delineating the marking line. It is more convenient to complete the alignment at one time without thinking of intervention.
  • the automatic alignment device if the brake signal is detected, the automatic alignment device is controlled to stop, that is, the automatic alignment control is stopped, the user can automatically perform manual alignment, and the control device records the user's operation command, and The operating parameters of the automatic alignment executing device can be corrected according to the historical data of the operation instruction, so that self-learning can be performed, and the adaptability is stronger.
  • FIG. 13 is a flow chart of a method for wireless charging alignment of an electric vehicle according to an embodiment of the present invention, as shown in FIG. 13, including:
  • step S50 whether the brake signal is detected, and if so, proceeds to step S60, otherwise proceeds to steps S70 and S80.
  • the automatic driving system of the electric vehicle or the automatic parking system operates according to the control curve.
  • step S90 Determine whether the charging registration is completed, and if yes, proceed to step S100, otherwise return to step S40.
  • the automatic alignment system is activated when the electric vehicle is engaged in the R position or the registration start button is triggered.
  • the data of the magnetometer is obtained, and judged and fitted according to the data, which is converted into a control curve of the electric vehicle route, and transmitted to the automatic driving system or the automatic parking system of the electric vehicle through the communication interface.
  • the vehicle is automatically driven by an automatic driving system or an automatic parking system.
  • the alignment of the charging transmitter and the charging receiver can be displayed in real time on the multimedia system of the car, so that the user can more intuitively understand the situation of the alignment.
  • the multimedia display is completed after the alignment.
  • the system sends a completion signal to the execution system, ie the automatic driving system or the automatic parking system.
  • the charging receiving end and the charging transmitting end start charging.
  • Automatic alignment is completed. In the automatic alignment process, if the brake signal is detected, the automatic alignment system stops working and will enter the manual registration phase.
  • the control request signal is no longer sent to the automatic parking system or the automated driving system, but the display signal is still sent to the multimedia display system to provide a more direct sensory image for the user.
  • the ability to detect errors and auto-learn can be implemented, and internal parameters can be automatically optimized based on multiple data of the user. Ensure more reliable and intelligent completion of the alignment function.
  • any process or method description in the flowcharts or otherwise described herein may be understood to include the steps including one or more steps for implementing a particular logical function or process. Modules, segments or portions of code of executable instructions, and the scope of preferred embodiments of the invention includes additional implementations, which may not be in the order shown or discussed, including in a substantially simultaneous manner depending on the functionality involved. The functions are performed in the reverse order, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.
  • a "computer-readable medium” can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device.
  • a more specific example (non-exhaustive list) of computer readable media includes the following: electrical connections having one or more wires (electrical Sub-device), portable computer case (magnetic device), random access memory (RAM), read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic device, and portable CD Read only memory (CDROM).
  • the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.
  • a plurality is at least two, for example, two, three, etc., unless specifically defined otherwise.

Abstract

L'invention concerne un système d'alignement de charge sans fil (100) d'un véhicule électrique. Le système comprend une extrémité de transmission de charge (30), un dispositif de guidage de charge (40), un dispositif d'alignement de charge (50), une extrémité de réception de charge (10), un dispositif de détection d'alignement (20) et un dispositif de commande (60), le dispositif de guidage de charge (40) générant un signal de guidage de charge, et le dispositif d'alignement de charge (50) générant un signal d'alignement de charge ; le dispositif de détection d'alignement (20) détectant le signal de guidage de charge et le signal d'alignement de charge ; le dispositif de commande (60) acquérant le paramètre de fonctionnement actuel du véhicule électrique (200) après la réception d'un signal de début de charge ; un signal de commande de guidage de charge étant généré en fonction du paramètre de fonctionnement actuel et du signal de guidage de charge ; un signal de commande d'alignement de charge étant généré en fonction du signal d'alignement de charge, de sorte que l'extrémité de réception de charge (10) soit alignée avec l'extrémité de transmission de charge (30) ; et l'extrémité de réception de charge (10), le dispositif de détection d'alignement (20) et le dispositif de commande (60) étant agencés sur le véhicule électrique (200). Le système d'alignement de charge sans fil (100) offre un alignement plus précis, ce qui permet d'améliorer l'efficacité de charge. L'invention concerne également un véhicule électrique (200), un système de transmission de charge sans fil et un procédé d'alignement de charge sans fil.
PCT/CN2016/108431 2015-12-18 2016-12-02 Système et procédé d'alignement de charge sans fil, véhicule électrique et système de transmission de charge sans fil WO2017101692A1 (fr)

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