CN114726115A - Control system and method for wireless power transmission - Google Patents
Control system and method for wireless power transmission Download PDFInfo
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- CN114726115A CN114726115A CN202210569671.4A CN202210569671A CN114726115A CN 114726115 A CN114726115 A CN 114726115A CN 202210569671 A CN202210569671 A CN 202210569671A CN 114726115 A CN114726115 A CN 114726115A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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
- 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
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- 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
Abstract
The invention discloses a control system and a control method for wireless power transmission, which relate to the technical field of wireless power transmission and comprise the following steps: the electric power control device comprises a transmitting assembly, a receiving assembly, a driving assembly and a control assembly, wherein the transmitting assembly is laid under a running road surface, the transmitting assembly comprises a transmitting side coil, the receiving assembly is arranged on a vehicle, the receiving assembly comprises a receiving side coil, the receiving side coil is in mutual inductance coupling with the transmitting side coil so as to receive electric energy output by the transmitting side coil, the driving assembly is arranged under the running road surface and is connected with the transmitting side coil, the control assembly is arranged on the vehicle and is electrically connected with the receiving side coil, and the control assembly is used for controlling the driving assembly to drive the transmitting side coil to move upwards or downwards and adjusting the mutual inductance coefficient between the receiving side coil and the transmitting side coil so as to enable the electric power of the receiving side coil to be within a preset range. The invention can avoid the transmission power fluctuation of wireless power transmission.
Description
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to a control system and a control method for wireless power transmission.
Background
Under the background that the problems of limited capacity, heavy self weight, long charging time and the like of a battery carried by an electric vehicle are increasingly severe, a dynamic wireless power transmission technology replaces a static wireless power transmission technology and gradually becomes a popular leading-edge energy supply scheme. The dynamic wireless power transmission technology realizes dynamic charging of the mobile equipment by laying a transmitting side coil track on the ground, so that the battery of the electric vehicle is charged and discharged in a shallow way, the requirement on the capacity of the battery can be obviously reduced, the parking charging time is shortened, and the method is one of effective ways for improving the driving mileage of the electric vehicle.
In the existing dynamic wireless power transmission, the mutual inductance coefficient between a transmitting side coil and a receiving side coil fluctuates due to the continuous displacement of a vehicle, so that the problems of power transmission fluctuation, low power transmission efficiency and the like are caused.
Disclosure of Invention
The embodiment of the invention provides a control system and a control method for wireless power transmission, and aims to solve the technical problems that in the wireless power transmission in the related art, the mutual inductance coefficient between a transmitting side coil and a receiving side coil fluctuates due to the continuous displacement of a vehicle, so that the power transmission power fluctuates and the power transmission efficiency is low.
In a first aspect, a control system for wireless power transmission is provided, the control system comprising:
a transmitting assembly laid under a road surface, the transmitting assembly including a transmitting side coil;
the receiving assembly is arranged on a vehicle and comprises a receiving side coil, and the receiving side coil is in mutual inductance coupling with the transmitting side coil so as to receive electric energy output by the transmitting side coil;
the driving assembly is arranged below the road surface and is connected with the transmitting side coil;
the control assembly is arranged on the vehicle and is electrically connected with the receiving side coil; and
the control assembly is used for controlling the driving assembly to drive the transmitting side coil to move upwards or downwards, and adjusting the mutual inductance coefficient between the receiving side coil and the transmitting side coil so as to enable the electric power of the receiving side coil to be within a preset range.
In some embodiments, the control assembly comprises:
a current measuring unit for measuring a current of the receiving side coil;
a voltage measuring unit for measuring a voltage of the receiving side coil;
a calculation determination unit for calculating the electric power of the receiving side coil from the current measured by the current measurement unit and the voltage measured by the voltage measurement unit, determining whether the electric power of the receiving side coil is within a preset range, and generating an adjustment instruction if the electric power of the receiving side coil is not within the preset range;
and the first communication unit is used for sending the adjusting instruction to a driving assembly, controlling the driving assembly to drive the transmitting side coil to move upwards or downwards, and adjusting the mutual inductance coefficient between the receiving side coil and the transmitting side coil so as to enable the electric power of the receiving side coil to be within a preset range.
In some embodiments, the drive assembly comprises:
a coil lifting mechanical arm unit connected with the transmitting side coil;
the second communication unit is used for receiving the adjusting instruction sent by the first communication unit;
and the adjustment calculation unit is used for calculating a position value of the coil lifting mechanical arm unit moving upwards or downwards according to the adjustment instruction, controlling the coil lifting mechanical arm unit to drive the transmitting side coil to move upwards or downwards according to the position value, and adjusting the mutual inductance between the receiving side coil and the transmitting side coil so as to enable the electric power of the receiving side coil to be within a preset range.
In some embodiments, the drive assembly further comprises:
and the standby compensation coil unit is electrically connected with the transmitting side coil, and when the position value exceeds the working range of the coil lifting mechanical arm unit, the adjusting and resolving unit controls the standby compensation coil unit to be connected into the transmitting side coil and adjusts the mutual inductance coefficient between the receiving side coil and the transmitting side coil so as to enable the electric power of the receiving side coil to be within a preset range.
In some embodiments, the launch assembly further comprises:
the first rectifying unit is used for rectifying an alternating current power supply on the side of a power grid and then outputting direct current;
and the high-frequency inversion unit is used for inverting the direct current output by the first rectification unit and then outputting high-frequency alternating current to the transmitting side coil.
In some embodiments, the launch assembly further comprises:
the first compensation unit is arranged between the high-frequency inversion unit and the transmitting side coil and used for compensating the high-frequency alternating current output by the high-frequency inversion unit and then outputting the high-frequency alternating current to the transmitting side coil.
In some embodiments, the receiving component further comprises:
a second rectifying unit for rectifying the high-frequency alternating current of the receiving side coil and outputting a direct current;
and the direct current chopping unit is used for regulating the direct current output by the second rectifying unit and then outputting the regulated direct current to the control assembly.
In some embodiments, the receiving component further comprises:
and the second compensation unit is arranged between the receiving side coil and the second rectifying unit and is used for compensating the high-frequency alternating current of the receiving side coil and outputting the compensated high-frequency alternating current to the second rectifying unit.
In some embodiments, the transmit side coil is a segmented coil with multiple primary windings connected in parallel;
the receiving side coil is a double-overlapped D-shaped coil.
In a second aspect, a control method for wireless power transmission is provided, the control method comprising the following steps:
and controlling the driving assembly to drive the transmitting side coil of the transmitting assembly to move upwards or downwards, and adjusting the mutual inductance between the receiving side coil of the receiving assembly and the transmitting side coil of the transmitting assembly so as to enable the electric power of the receiving side coil of the receiving assembly to be within a preset range.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a control system and a control method for wireless power transmission, wherein the control system is provided with a driving assembly and a control assembly, the control assembly can control the driving assembly to drive a transmitting side coil to move upwards or downwards, and the mutual inductance coefficient between a receiving side coil and the transmitting side coil is adjusted, so that the electric power of the receiving side coil is in a preset range, the transmission power fluctuation is avoided, and the transmission efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a control system for wireless power transmission according to an embodiment of the present invention;
fig. 2 is a block diagram of a control system for wireless power transmission according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a coil lift robot unit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a backup compensation coil unit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a control system for wireless power transmission according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a transmitting side coil and a receiving side coil provided by an embodiment of the present invention;
in the figure: 1. a transmitting assembly; 11. a transmitting side coil; 12. a first rectifying unit; 13. a high-frequency inversion unit; 14. a first compensation unit; 15. a high frequency alternating current bus; 2. a receiving component; 21. receiving a side coil; 22. a second rectifying unit; 23. a direct current chopper unit; 24. a second compensation unit; 3. a drive assembly; 31. a coil lifting mechanical arm unit; 311. a coil lifting mechanical arm; 32. a second communication unit; 33. an adjustment resolving unit; 34. a backup compensation coil unit; 341. a standby compensation coil; 4. a control component; 41. a current measuring unit; 42. a voltage measuring unit; 43. a calculation judgment unit; 44. a first communication unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a control system for wireless power transmission, which can solve the technical problems of transmission power fluctuation and low transmission efficiency caused by the fluctuation of a mutual inductance coefficient between a transmitting side coil and a receiving side coil due to the continuous displacement of a vehicle in the conventional wireless power transmission.
Referring to fig. 1 and 2, an embodiment of the present invention provides a control system for wireless power transmission, where the control system includes: the device comprises a transmitting assembly 1, a receiving assembly 2, a driving assembly 3 and a control assembly 4.
The transmitting assembly 1 is laid under a driving road surface, and the transmitting assembly 1 comprises a transmitting side coil 11. The receiving assembly 2 is arranged on a vehicle, the receiving assembly 2 comprises a receiving side coil 21, and the receiving side coil 21 is coupled with the transmitting side coil 11 in a mutual inductance manner so as to receive the electric energy output by the transmitting side coil 11. The driving assembly 3 is arranged under a driving road surface and is connected with the transmitting side coil 11. The control component 4 is disposed on the vehicle and electrically connected to the receiving side coil 21, and the control component 4 is configured to control the driving component 3 to drive the transmitting side coil 11 to move upward or downward, and adjust a mutual inductance between the receiving side coil 21 and the transmitting side coil 11, so that an electric power of the receiving side coil 21 is within a preset range.
The control system for wireless power transmission in the embodiment of the invention is provided with the driving assembly and the control assembly, wherein the control assembly can control the driving assembly to drive the transmitting side coil to move upwards or downwards, and adjust the mutual inductance coefficient between the receiving side coil and the transmitting side coil, so that the electric power of the receiving side coil is in a preset range, the transmission power fluctuation is avoided, and the transmission efficiency is improved.
As an alternative implementation, in an embodiment of the present invention, referring to fig. 2, the control component 4 includes: a current measuring unit 41, a voltage measuring unit 42, a calculation judging unit 43, and a first communication unit 44.
The current measuring unit 41 is configured to measure the current of the receiving-side coil 21, the voltage measuring unit 42 is configured to measure the voltage of the receiving-side coil 21, and the calculation judging unit 43 is configured to calculate the electric power of the receiving-side coil 21 according to the current measured by the current measuring unit 41 and the voltage measured by the voltage measuring unit 42, judge whether the electric power of the receiving-side coil 21 is within a preset range, and generate an adjustment instruction if the electric power of the receiving-side coil 21 is not within the preset range. The first communication unit 44 is configured to send the adjustment instruction to the driving assembly 3, control the driving assembly 3 to drive the transmitting side coil 11 to move upward or downward, and adjust a mutual inductance between the receiving side coil 21 and the transmitting side coil 11 so that the electric power of the receiving side coil 21 is within a preset range. The current measuring unit 41 may adopt a CSM050LT dc hall sensor, the voltage measuring unit 42 may adopt a VSM025A voltage hall sensor, and the calculating and determining unit 43 may adopt a PW6001 power meter.
Specifically, a standard transmission power is preset, and when the electric power of the receiving side coil 21 fluctuates by more than 3% compared with the standard transmission power, it is determined that the electric power of the receiving side coil 21 is not within a preset range, and an adjustment instruction is generated.
As an alternative implementation, in an embodiment of the invention, as shown in fig. 2, the driving assembly 3 includes: a coil elevating robot arm unit 31, a second communication unit 32, and an adjustment resolving unit 33.
The coil lifting mechanical arm unit 31 is connected to the transmitting side coil 11, and the second communication unit 32 is configured to receive an adjustment instruction sent by the first communication unit 44. The adjustment calculating unit 33 is configured to calculate a position value of the coil lifting mechanical arm unit 31 moving upward or downward according to the adjustment instruction, control the coil lifting mechanical arm unit 31 to drive the transmitting side coil 11 to move upward or downward according to the position value, and adjust a mutual inductance between the receiving side coil 21 and the transmitting side coil 11 so that the electric power of the receiving side coil 21 is within a preset range. The first communication unit 44 and the second communication unit 32 are both wireless communication units, and can select WIFI or GSM modes, or adopt a GRRS packet switching mode with the advantage of high-speed transmission.
Specifically, referring to fig. 3, the coil lifting mechanical arm unit 31 includes two coil lifting mechanical arms 311 symmetrically arranged, and the coil lifting mechanical arm 311 of the embodiment of the present invention is a 4-axis mechanical arm, which includes a base axis, two arm axes, and a wrist axis, and can realize a movement range of 360 ° and up and down 50cm in an arm space.
As an alternative implementation, in an embodiment of the invention, the driving assembly further includes: and the standby compensation coil unit 34, the standby compensation coil unit 34 is electrically connected with the transmitting side coil 11, when the position value exceeds the working range of the coil lifting mechanical arm unit 31, the adjusting and calculating unit 33 controls the standby compensation coil unit 34 to be connected to the transmitting side coil 11, and adjusts the mutual inductance between the receiving side coil 21 and the transmitting side coil 11, so that the electric power of the receiving side coil 21 is within a preset range.
Specifically, referring to fig. 4, the backup compensating coil unit 34 according to the embodiment of the present invention includes two backup compensating coils 341 symmetrically disposed, and in an extreme case, when the position value exceeds the working range of the coil lifting robot unit 31, the adjusting and calculating unit 33 controls the backup compensating coil unit 34 to be connected to the transmitting side coil 11, so as to complete mutual inductance compensation in the extreme case, and make the electric power of the receiving side coil 21 within a preset range.
As an optional implementation manner, in an embodiment of the present invention, referring to fig. 2, the transmitting assembly 1 further includes: a first rectifying unit 12 and a high frequency inverting unit 13.
The first rectifying unit 12 is configured to rectify an alternating current power supply on a power grid side and output a direct current, and the high-frequency inverting unit 13 is configured to invert the direct current output by the first rectifying unit 12 and output a high-frequency alternating current to the transmitting side coil 11. The driving chip of the high-frequency inverter unit 13 may also be 2SC0108T2G0-17 manufactured by CONCEPT corporation.
Specifically, three-phase alternating current is provided by a grid-side alternating current power supply, and as an initial power supply, the provided standard three-phase symmetrical alternating current is supplied to the first rectifying unit 12 and converted into direct current electric energy, and then the direct current electric energy is converted into high-frequency alternating current electric energy through the high-frequency inverting unit 13 and supplied to the transmitting side coil 11 through the high-frequency alternating current bus 15.
As an optional implementation manner, in an embodiment of the present invention, referring to fig. 2, the transmitting assembly 1 further includes: the first compensation unit 14 is disposed between the high-frequency inverter unit 13 and the transmitting side coil 11, and the first compensation unit 14 is configured to compensate the high-frequency alternating current output by the high-frequency inverter unit 13 and output the compensated high-frequency alternating current to the transmitting side coil 11. Preferably, the first compensation unit 14 adopts a compensation circuit with a single inductor and a double capacitor to suppress the electric energy pulsation and ensure the electric energy transmission.
As an optional implementation manner, in an embodiment of the present invention, referring to fig. 2, the receiving assembly 2 further includes: a second rectifying unit 22 and a dc chopping unit 23.
The second rectifying unit 22 is configured to rectify the high-frequency alternating current of the receiving side coil and output a direct current, and the direct current chopping unit 23 is configured to regulate and output the direct current output by the second rectifying unit to the control component 4. The second rectifying unit 22 may employ a diode of type DSEI2x61-02A, or a diode of type DSEI2x101-12A or type DSEI2x 101-06A.
Specifically, the high-frequency ac power of the receiving side coil is converted from ac to dc by the second rectifying unit 22, and the obtained dc power is converted from dc to dc by the dc chopping unit 23, usually, the dc chopping unit 23 is configured to regulate the dc power output by the second rectifying unit and output the regulated dc power to the vehicle-mounted battery pack or the vehicle-mounted motor, and in order to make the electric power of the receiving side coil 21 within a preset range, the dc chopping unit 23 is further configured to regulate the dc power output by the second rectifying unit and output the regulated dc power to the control component 4, so that the control component 4 can control the driving component 3 conveniently.
As an optional implementation manner, in an embodiment of the present invention, referring to fig. 2 and fig. 5, the receiving assembly 2 further includes: and a second compensation unit 24, where the second compensation unit 24 is disposed between the receiving side coil 21 and the second rectification unit 22, and the second compensation unit 24 is configured to compensate the high-frequency alternating current of the receiving side coil 21 and output the compensated high-frequency alternating current to the second rectification unit 22. Preferably, the second compensation unit 24 adopts a compensation circuit with a single inductor and a double capacitor to suppress the electric energy pulsation and ensure the electric energy transmission.
As an alternative implementation manner, in an embodiment of the invention, referring to fig. 6, the transmitting side coil 11 is a segmented coil with multiple parallel primary windings, and the receiving side coil 21 is a double-overlapped D-type coil.
The transmitting side coil 11 adopts a sectional type coil with a plurality of primary windings connected in parallel, so that a large amount of waste and overhigh coil loss of the long guide rail type coil to a magnetic field are avoided, the coil material and cost are effectively saved, and the utilization rate of the coil magnetic field is improved. The receiving side coil 21 adopts a double-overlapped D-shaped coil to form single-transmitting double-receiving dynamic wireless power transmission, so that stable power output and power supply can be ensured.
The embodiment of the invention provides a control method for wireless power transmission, which comprises the following steps:
the driving assembly 3 is controlled to drive the transmitting side coil 11 of the transmitting assembly 1 to move upwards or downwards, and the mutual inductance between the receiving side coil 21 of the receiving assembly 2 and the transmitting side coil 11 of the transmitting assembly 1 is adjusted, so that the electric power of the receiving side coil 21 of the receiving assembly 2 is within a preset range.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control system for wireless power transfer, the control system comprising:
a transmitting assembly (1) laid under a road surface, the transmitting assembly (1) comprising a transmitting side coil (11);
the receiving assembly (2) is arranged on a vehicle, the receiving assembly (2) comprises a receiving side coil (21), and the receiving side coil (21) is in mutual inductance coupling with the transmitting side coil (11) so as to receive the electric energy output by the transmitting side coil (11);
the driving assembly (3) is arranged under the road surface and is connected with the transmitting side coil (11);
a control component (4) which is arranged on the vehicle and is electrically connected with the receiving side coil (21); and
the control component (4) is used for controlling the driving component (3) to drive the transmitting side coil (11) to move upwards or downwards, and adjusting the mutual inductance between the receiving side coil (21) and the transmitting side coil (11) so as to enable the electric power of the receiving side coil (21) to be within a preset range.
2. The control system of wireless power transfer of claim 1, wherein the control assembly (4) comprises:
a current measuring unit (41) for measuring a current of the receiving side coil (21);
a voltage measurement unit (42) for measuring a voltage of the reception side coil (21);
a calculation determination unit (43) for calculating the electric power of the receiving side coil (21) from the current measured by the current measurement unit (41) and the voltage measured by the voltage measurement unit (42), and determining whether the electric power of the receiving side coil (21) is within a preset range, and if the electric power of the receiving side coil (21) is not within the preset range, generating an adjustment instruction;
a first communication unit (44) for sending the adjustment instruction to a driving assembly (3), controlling the driving assembly (3) to drive the transmitting side coil (11) to move upwards or downwards, and adjusting the mutual inductance between the receiving side coil (21) and the transmitting side coil (11) so as to enable the electric power of the receiving side coil (21) to be within a preset range.
3. The control system of wireless power transfer according to claim 2, wherein the drive assembly (3) comprises:
a coil lifting mechanical arm unit (31) connected with the transmitting side coil (11);
a second communication unit (32) for receiving the adjustment instruction transmitted by the first communication unit (44);
and the adjustment calculation unit (33) is used for calculating a position value of the coil lifting mechanical arm unit (31) moving upwards or downwards according to the adjustment instruction, controlling the coil lifting mechanical arm unit (31) to drive the transmitting side coil (11) to move upwards or downwards according to the position value, and adjusting the mutual inductance between the receiving side coil (21) and the transmitting side coil (11) so as to enable the electric power of the receiving side coil (21) to be within a preset range.
4. The control system for wireless power transmission according to claim 3, wherein the driving assembly (3) further comprises:
and the standby compensation coil unit (34) is electrically connected with the transmitting side coil (11), when the position value exceeds the working range of the coil lifting mechanical arm unit (31), the adjusting and calculating unit (33) controls the standby compensation coil unit (34) to be connected into the transmitting side coil (11), and adjusts the mutual inductance coefficient between the receiving side coil (21) and the transmitting side coil (11) so that the electric power of the receiving side coil (21) is in a preset range.
5. The control system of wireless power transfer of claim 1, wherein the transmitting assembly (1) further comprises:
the first rectifying unit (12) is used for rectifying the alternating current power supply on the power grid side and then outputting direct current;
and the high-frequency inversion unit (13) is used for inverting the direct current output by the first rectification unit (12) and then outputting high-frequency alternating current to the transmitting side coil (11).
6. The control system of wireless power transfer of claim 5, wherein the transmitting assembly (1) further comprises:
the first compensation unit (14) is arranged between the high-frequency inversion unit (13) and the transmitting side coil (11), and the first compensation unit (14) is used for compensating the high-frequency alternating current output by the high-frequency inversion unit (13) and then outputting the high-frequency alternating current to the transmitting side coil (11).
7. The control system for wireless power transfer according to claim 1, wherein the receiving component (2) further comprises:
a second rectifying unit (22) for rectifying the high-frequency alternating current of the receiving side coil (21) and outputting a direct current;
and the direct current chopping unit (23) is used for regulating the direct current output by the second rectifying unit (22) and outputting the regulated direct current to the control assembly (4).
8. The control system for wireless power transfer of claim 7, wherein the receiving assembly (2) further comprises:
and a second compensation unit (24) disposed between the receiving side coil (21) and a second rectification unit (22), wherein the second compensation unit (24) is used for compensating the high-frequency alternating current of the receiving side coil (21) and outputting the compensated high-frequency alternating current to the second rectification unit (22).
9. The control system for wireless power transfer of claim 1, wherein:
the transmitting side coil (11) is a segmented coil with a plurality of primary windings connected in parallel;
the receiving side coil (21) is a double-overlapped D-shaped coil.
10. A control method of wireless power transmission using the control system of wireless power transmission according to claim 1, characterized by comprising the steps of:
the driving assembly (3) is controlled to drive the transmitting side coil (11) of the transmitting assembly (1) to move upwards or downwards, and the mutual inductance between the receiving side coil (21) of the receiving assembly (2) and the transmitting side coil (11) of the transmitting assembly (1) is adjusted, so that the electric power of the receiving side coil (21) of the receiving assembly (2) is within a preset range.
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| CN202210569671.4A CN114726115A (en) | 2022-05-24 | 2022-05-24 | Control system and method for wireless power transmission |
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