CN115284900A - Foldable wireless electric energy receiving mechanism and wireless car that charges - Google Patents
Foldable wireless electric energy receiving mechanism and wireless car that charges Download PDFInfo
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- CN115284900A CN115284900A CN202210861069.8A CN202210861069A CN115284900A CN 115284900 A CN115284900 A CN 115284900A CN 202210861069 A CN202210861069 A CN 202210861069A CN 115284900 A CN115284900 A CN 115284900A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 66
- 230000007306 turnover Effects 0.000 claims abstract description 15
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
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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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- 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
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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
- 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
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a folding wireless power receiving mechanism which is characterized by comprising an energy receiving coil and a coil folding mechanism, wherein the energy receiving coil is designed to be a square coil; in a charging state, the coil turnover mechanism pushes the energy receiving coil to extend to be in a vertical state. In addition, the invention also provides a wireless charging automobile adopting the folding wireless power receiving mechanism. The effect is as follows: the folding wireless power receiving mechanism replaces a commonly used two-parallel coil coupling mechanism, is suitable for chassis heights of different vehicle types, improves the coupling coefficient to a great extent, can still normally work when a system deviates, has good deviation resistance, and greatly increases the output power of the system.
Description
Technical Field
The invention relates to a wireless power transmission technology, in particular to a folding wireless power receiving mechanism and a wireless charging automobile.
Background
With the technical development of electric vehicles, a great challenge is often faced in the popularization process, wherein endurance is one of pain points which are difficult to overcome. Because the capacity of a vehicle-mounted battery is small, an electric automobile needs to be charged on time, and the charging modes on the market at present mainly include wired charging and wireless charging. The wired charging is a charging mode widely applied, but the traditional wired charging has many disadvantages, such as the need of direct contact, easy generation of electric sparks, potential safety hazards, easy loss generation due to frequent plugging and unplugging operations, and the like. In the face of the drawbacks of wired charging, researchers have proposed wireless charging techniques. Compared with wired charging, wireless charging has the following advantages: (1) contact is not needed, and the safety is high; (2) the occupied area is small, the charging is convenient and intelligent, and the charging is carried out immediately; (3) the influence of environmental factors is small, and the rain and snow weather can still work normally; (4) the manual maintenance cost is low.
Although the advantages of wireless charging are many, the current wireless charging mode of the electric automobile is very sensitive to the change of system parameters. The change of transmission distance caused by different automobile chassis height, the deviation of the system, the change of battery capacity in the charging process and the like all affect the optimal working point of the system, and further the power, the efficiency and the like of wireless charging are reduced. Therefore, it is necessary to research a coupling mechanism which is suitable for the automobile chassis and has high anti-deviation performance and high power efficiency of system transmission.
Disclosure of Invention
In order to solve the pain points of long wireless charging transmission distance, low efficiency and low power caused by high chassis of the electric automobile, the invention provides a folding wireless electric energy receiving mechanism which can reduce the transmission distance between a transmitting coil and a receiving coil and can increase the anti-offset capability.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
a foldable wireless electric energy receiving mechanism is characterized by comprising an energy receiving coil and a coil folding mechanism, wherein the energy receiving coil is designed to be a square coil, and the coil folding mechanism controls the energy receiving coil to be folded to be in a horizontal state in an uncharged state; in a charging state, the coil turnover mechanism pushes the energy receiving coil to extend to be in a vertical state.
Optionally, a current detection circuit is arranged on the energy receiving coil, the coil folding mechanism detects whether the energy receiving coil enters a wireless charging area through the current detection circuit, and when the energy receiving coil enters the wireless charging area, the coil folding mechanism pushes the energy receiving coil to extend to be in a vertical state.
Optionally, the energy receiving coil and the energy transmitting coil matched with the energy receiving coil are DD type transmitting coils, and the two D type coils are connected in series in an opposite direction on the same plane.
Optionally, the energy receiving coil is wound in a coil storage box, the tail of the coil storage box is hinged to the automobile chassis, and when the coil folding mechanism pushes the energy receiving coil to extend to be in a vertical state, the front of the coil storage box is close to the ground.
Optionally, the energy receiving coil is wound in a coil storage box, the front portion of the coil storage box is hinged to the automobile chassis, and when the coil folding mechanism pushes the energy receiving coil to extend to be in a vertical state, the tail portion of the coil storage box is close to the ground.
Optionally, two of the energy transmitting coils are arranged side by side along a forward or backward direction of the electric vehicle.
Optionally, an angle measuring instrument is disposed in the coil folding mechanism, and the angle measuring instrument is used to detect whether the energy receiving coil is turned over to 90 °.
Based on the above description, the present invention further provides a wireless charging vehicle, which is characterized in that: comprising the folding wireless power receiving mechanism as described above.
Optionally, when charging is needed, the user sends a charging demand to the energy transmitting terminal and enters a wireless charging area in a forward mode; the energy transmitting end firstly transmits a contraposition detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to stop at the central area, the coil turnover mechanism controls the energy receiving coil to turn over from back to front to be in a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
Optionally, when charging is needed, the user sends a charging demand to the energy transmitting terminal and enters a wireless charging area in a retreating mode; the energy transmitting end firstly transmits a contraposition detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to be parked in the central area, the coil turnover mechanism controls the energy receiving coil to be turned over from front to back to be in a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
The invention has the following effects:
the folding wireless power receiving mechanism and the wireless charging automobile provided by the invention replace two parallel coil coupling mechanisms which are usually used, are suitable for chassis heights of different automobile types, simultaneously improve the coupling coefficient to a great extent, can still normally work when a system deviates, have good deviation resistance, and greatly increase the output power of the system.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.
Fig. 1 is a schematic circuit diagram of a conventional LCC-S type wireless power transmission system in the prior art;
fig. 2 is a charging state change diagram of a wireless charging vehicle adopting the folding wireless power receiving mechanism provided by the invention;
FIG. 3 is a schematic structural diagram of a receiving coil in a horizontal state in COMSOL simulation software;
FIG. 4 is a schematic structural diagram of a receiving coil in a vertical state in COMSOL simulation software;
FIG. 5 is a magnetic line distribution diagram of the receiving coil in a vertical state;
FIG. 6 is a graph of the mutual inductance change when the receiver coil is shifted along the x-axis;
FIG. 7 is a graph of the mutual inductance change when the receiver coil is shifted along the y-axis;
FIG. 8 is a diagram of the winding of the transmitting coil;
FIG. 9 is a diagram of the winding of the receiving coil;
fig. 10 is a charge control flow diagram in an embodiment.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, this embodiment is described by taking an LCC-S topology commonly used for static wireless charging of an electric vehicle as an example, where the topology has a characteristic of primary constant current and secondary constant voltage, that is, the secondary voltage is independent of the load and only related to the mutual inductance, the compensation inductance and the input power supply, and the secondary voltage reflects the mutual inductance under the condition that the compensation inductance and the input power supply are not changed. U in FIG. 1 dc Indicating DC power supply, V 1 ～V 4 Four driving signals are used for driving a full-bridge inverter, an inductor Lp1 and a capacitor C f And a capacitor C p Forming a primary LCC compensation network, L p Is a transmitting coil, L s To receive coils, C s The secondary side compensation capacitor, the receiving coil and the secondary side compensation capacitor form a series resonance network, a wireless energy signal is picked up and then passes through a rectification filter circuit to form a load R L And (5) supplying power.
In a conventional LCC-S type wireless power transmission system, an energy transmitting coil and an energy receiving coil are generally arranged in a facing manner, and when the system is applied to an electric vehicle, in order to ensure the trafficability characteristic of the vehicle, a certain transmission distance is provided between the energy receiving coil and the energy transmitting coil, thereby affecting the energy transmission efficiency.
Therefore, the embodiment provides a foldable wireless power receiving mechanism, which includes an energy receiving coil and a coil folding mechanism, wherein the energy receiving coil is designed to be a square coil, and in an uncharged state, the coil folding mechanism controls the energy receiving coil to be folded to be in a horizontal state; in a charging state, the coil turnover mechanism pushes the energy receiving coil to extend to be in a vertical state.
As can be seen from fig. 2, the energy transmitting coil 1 is usually buried on the ground, the energy receiving coil 2 is disposed on the chassis of the electric vehicle, and in the uncharged state, the energy receiving coil 2 is in a horizontal state, and a certain distance is reserved between the energy transmitting coil and the ground, so that the normal traffic performance of the vehicle is not affected, and when charging is required, the energy receiving coil 2 is in a vertical state, thereby reducing the distance between the energy transmitting coil and the energy receiving coil, and improving the energy transmission efficiency.
In the specific implementation, the energy receiving coil and the matched energy transmitting coil are DD type transmitting coils, and the two D type coils are connected in series and in reverse on the same plane, as can be seen from fig. 3, 4 and 5. Taking the simulation effect of fig. 3 as an example, when the secondary square receiving coil is in an uncharged state, the secondary square receiving coil is folded on the chassis of the vehicle, the distance between the primary side and the secondary side is 22.5cm (which can be roughly regarded as the height of the chassis of the vehicle), when the secondary square receiving coil is in a charged state, the secondary square receiving coil is turned over by 90 degrees and then is perpendicular to the chassis of the vehicle, the center from the primary side to the secondary square receiving coil is 12cm, and the coupling mechanism is subjected to simulation analysis in the COMSOL to obtain the magnetic line distribution diagram shown in fig. 5. As can be seen from the magnetic force line distribution diagram, after the magnetic core is added below the energy transmitting coil, a magnetic circuit with lower magnetic resistance is formed due to higher magnetic conductivity of the magnetic core, so that the magnetic flux is effectively limited in a smaller range, and finally the effect of reducing the magnetic flux leakage below the coupling mechanism is achieved. The magnetic flux in the y-axis direction (horizontal direction) of the DD type transmitting coil is concentrated near the square receiving coil, so that compared with a general coupling mechanism with two parallel coils, the designed DD type transmitting coil is matched with the vertical square receiving coil to form the coupling mechanism with higher magnetic flux utilization rate and better coupling degree between the coils.
In addition, as shown in fig. 6, which is a variation diagram of the mutual inductance during the deviation of the secondary side from the x axis by ± 10cm, it can be seen that when the automobile deviates from the optimum charging point by ± 10cm, the mutual inductance drops by less than 1uH, so it can be judged that the designed coupling mechanism has good offset resistance performance in the x axis. As shown in FIG. 7, which is a graph of the variation of mutual inductance during the y-axis offset of the secondary side by + -10 cm, it can be seen that the designed coupling mechanism has good anti-offset performance when offset in the y-direction.
In specific implementation, the winding manner of the primary side DD energy transmitting coil can refer to fig. 8, the adopted litz wire is 0.1mm × 1650 strands, the outer diameter is 6.32mm, 15 turns are provided, the maximum bearable current is 66.9A, and the design requirement can be met. Each coil is of a 21cm square structure, and the winding direction is counterclockwise on the left and clockwise on the right. The length of the magnetic core laid by the transmitting coil can be selected to be 105% of the total length of the DD type transmitting coil, the thickness is 0.5mm, and the width can be selected to be equal to or slightly larger than the width of the coil. The litz wire of the square receiving coil on the secondary side has the same specification as that of the primary side, and the litz wire has 12 turns, is wound in a mode shown in figure 9, and has the size of 21cm. Can be at electric automobile bottom installation shielding aluminum plate as required, two aluminum plate's area can be selected for big such as with DD coil, and the aluminum plate interval is about 1cm, but shielding aluminum plate and energy receiving coil independent fixed set up, can not rotate along with energy receiving coil's rotation.
According to the parameter configuration, the simulation shows that the energy receiving coil and the energy transmitting coil are in positive time alignment, and L is p ＝39.3μH,L s The power consumption is about 13kW, the efficiency reaches 92%, and the requirement of high-power wireless charging of the electric automobile can be met.
When the energy receiving coil is wound in the coil storage box in specific implementation, the tail of the coil storage box is hinged to an automobile chassis, when the coil turnover mechanism pushes the energy receiving coil to extend to be in a vertical state, the front of the coil storage box is close to the ground, and the installation mode is suitable for vehicle backward parking type charging.
In another implementation, the energy receiving coil is wound in a coil storage box, the front part of the coil storage box is hinged with an automobile chassis, when the coil folding mechanism pushes the energy receiving coil to extend to be in a vertical state, the tail part of the coil storage box is close to the ground, and the installation mode is suitable for forward parking charging of a vehicle.
In either case, two of the energy transmitting coils are arranged side by side in the forward or backward direction of the electric vehicle. When the energy receiving coil is in a vertical state, the energy receiving coil can be just above the dividing lines of the two D-type coils.
As can be seen from fig. 5, by arranging the energy transmitting coil and the energy receiving coil in the above manner, when the electric vehicle moves forward or backward, the energy receiving coil is in a horizontal state and gradually approaches the energy transmitting coil, when the energy transmitting coil transmits energy, a single D-type coil can still couple part of the energy to the energy receiving coil, the induced current of the energy receiving coil gradually increases as the overlapping area of the energy receiving coil and the single D-type coil increases, and when the energy receiving coil crosses over the separation line of the DD-type coil, the induced current of the energy receiving coil gradually decreases due to the opposite direction of the magnetic field of the D-type coil on the other side, so that it can be determined whether the electric vehicle accurately enters the wireless charging area by detecting the change of the induced current of the energy receiving coil in the horizontal state.
Therefore, as an implementation manner, a current detection circuit is arranged on the energy receiving coil, the coil folding mechanism detects whether the energy receiving coil enters a wireless charging area through the current detection circuit, when the energy receiving coil enters the wireless charging area, the coil folding mechanism pushes the energy receiving coil to extend to be in a vertical state, an angle measurement instrument is arranged in the coil folding mechanism, and the angle measurement instrument detects whether the energy receiving coil is turned to 90 °.
In addition, the embodiment also provides a wireless charging automobile, which comprises the folding wireless power receiving mechanism.
As an implementation mode, when the electric automobile needs to be charged, a user sends a charging demand to the energy transmitting terminal and enters a wireless charging area in a forward mode; the energy transmitting end firstly transmits a contraposition detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to stop at the central area, the coil turnover mechanism controls the energy receiving coil to turn over from back to front to be in a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
As another embodiment, when the electric vehicle needs to be charged, a user sends a charging demand to the energy transmitting terminal and enters a wireless charging area in a backward mode; the energy transmitting end firstly transmits a contraposition detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to stop at the central area, the coil turnover mechanism controls the energy receiving coil to turn over from front to back into a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
Of course, the charging control of the electric vehicle may also be implemented according to the embodiment shown in fig. 10, and it can be seen that, in this control mode, the charging process is mainly divided into three steps:
firstly, guiding an electric automobile to accurately stop on a charging platform based on auxiliary technologies such as alignment guidance and load detection, detecting whether a coupling mechanism is right or not through a position detection technology, wherein the position detection error is +/-0.5 cm, and transmitting position information to a vehicle end through wireless communication when the position is detected;
and secondly, turning the secondary square receiving coil to a position vertical to the primary coil based on an electric power turning technology, and detecting whether the secondary turning is in place or not through an angle detection technology. The function of the part is to turn the coupling mechanism to a charging state, the turning angle is detected by an angle measuring instrument, the detected error is not more than 1 degree, and the information is also transmitted to the vehicle end. The vehicle-mounted end can timely adjust the overturning angle through the returned information, so that the position of the coupling mechanism is ensured to be correct.
And thirdly, based on the wireless communication technology, the vehicle-mounted end and the communication unit of the ground end are in wireless connection and are identified, and the vehicle-mounted end sends vehicle information and vehicle states to the ground end. The vehicle-mounted end communication unit initiates a charging request after connection is established, and after the ground end receives information and passes verification, the electric automobile can start wireless charging. The charging state of coil information, temperature and the like at the ground end can be displayed at the vehicle end through the communication unit. After the communication connection is established, the information interaction of the vehicle-mounted equipment and the ground equipment is synchronous, and the safe operation of the charging process is ensured.
In conclusion, the folding wireless power receiving mechanism and the wireless charging automobile provided by the invention can be suitable for chassis heights of different automobile types, and meanwhile, the coupling coefficient is greatly improved, the wireless charging automobile can still normally work when a system deviates, and the wireless charging automobile has good deviation resistance performance and greatly increases the output power of the system.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and such changes are intended to be covered by the appended claims and their equivalents.
Claims (10)
1. A folding wireless electric energy receiving mechanism is characterized by comprising an energy receiving coil and a coil folding mechanism, wherein the energy receiving coil is designed to be a square coil, and the coil folding mechanism controls the energy receiving coil to be folded to be in a horizontal state in an uncharged state; in a charging state, the coil turnover mechanism pushes the energy receiving coil to extend to be in a vertical state.
2. The foldable wireless power receiving mechanism according to claim 1, wherein a current detection circuit is disposed on the energy receiving coil, and the coil folding mechanism detects whether the energy receiving coil enters a wireless charging area through the current detection circuit, and pushes the energy receiving coil to be stretched into an upright state through the coil folding mechanism when the energy receiving coil enters the wireless charging area.
3. The foldable wireless power receiving mechanism of claim 1, wherein the energy receiving coil matching energy transmitting coil is a DD type transmitting coil, and two D type coils are connected in series and in reverse on the same plane.
4. A foldable radio energy receiving mechanism according to any of claims 1 to 3, wherein the energy receiving coil is wound in a coil housing case, the coil housing case is hinged at its rear end to the chassis of the vehicle, and the coil housing case is arranged at its front end close to the ground when the coil folding mechanism pushes the energy receiving coil to extend in an upright position.
5. A foldable radio energy receiving mechanism according to any of claims 1 to 3, wherein the energy receiving coil is wound in a coil housing case, the coil housing case is hinged at its front portion to the chassis of the vehicle, and the coil housing case is arranged at its rear portion to be close to the ground when the coil folding mechanism pushes the energy receiving coil to be extended in the vertical state.
6. The foldable wireless power receiving mechanism of claim 3, wherein two D-type coils of the power transmitting coil are arranged side by side along a forward or backward direction of the electric vehicle.
7. The folding wireless power receiving mechanism according to claim 3, wherein an angle measuring instrument is provided in the coil folding mechanism, and it is detected by the angle measuring instrument whether the power receiving coil is turned over to 90 °.
8. The utility model provides a wireless car that charges which characterized in that: comprising the foldable wireless power receiving mechanism of any of claims 1-7.
9. The wireless charging car of claim 8, wherein: when charging is needed, a user sends a charging demand to the energy transmitting end and enters a wireless charging area in a forward mode; the energy transmitting end firstly transmits a contraposition detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to stop at the central area, the coil turnover mechanism controls the energy receiving coil to turn over from back to front to be in a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
10. The wireless charging car of claim 8, wherein: when charging is needed, a user sends a charging requirement to the energy transmitting end and enters a wireless charging area in a retreating mode; the energy transmitting end firstly transmits an alignment detection signal according to a first power level, and determines whether the energy transmitting end reaches a central area or not by detecting the variation condition of induced current on the energy receiving coil; when the induced current reaches the maximum value, the electric automobile is shown to be parked in the central area, the coil turnover mechanism controls the energy receiving coil to be turned over from front to back to be in a vertical state, and the energy transmitting end sends an energy signal according to a second power level to realize wireless charging.
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| CN202210861069.8A CN115284900B (en) | 2022-07-22 | 2022-07-22 | Folding wireless electric energy receiving mechanism and wireless car that charges |
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| CN202210861069.8A CN115284900B (en) | 2022-07-22 | 2022-07-22 | Folding wireless electric energy receiving mechanism and wireless car that charges |
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Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443860A (en) * | 2006-05-11 | 2009-05-27 | 株式会社田村制作所 | Coil and coil shaping method |
| US20120007549A1 (en) * | 2010-07-09 | 2012-01-12 | Sony Corporation | Wireless charging device and wireless charging system |
| US20160141097A1 (en) * | 2014-11-14 | 2016-05-19 | Motorola Solutions, Inc | Multi-plane receiving coil for wirelessly charging a battery |
| KR101627798B1 (en) * | 2015-11-04 | 2016-06-13 | (주)그린파워 | Wireless charging electric vehicle and method thereof |
| CN206370711U (en) * | 2016-12-28 | 2017-08-01 | 深圳市钰品技术有限公司 | Folding movable power supply wireless charger |
| US20180015832A1 (en) * | 2016-07-12 | 2018-01-18 | Denso International America, Inc. | Vehicular Wireless Power Transfer System With Performance Monitoring |
| CN107813714A (en) * | 2016-09-13 | 2018-03-20 | 现代自动车株式会社 | The method and apparatus that wireless power conveying is carried out using multiple transmit coils |
| CN108155728A (en) * | 2017-12-29 | 2018-06-12 | 武汉大学 | One kind is for unmanned plane dynamic stability continuation of the journey wireless charging system |
| CN108382220A (en) * | 2018-01-26 | 2018-08-10 | 清华大学 | Wireless charging magnetic coupler between the electronic automobile-used traveling of one kind |
| US20190074720A1 (en) * | 2016-03-31 | 2019-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Primary Coil Unit |
| CN111641274A (en) * | 2020-06-09 | 2020-09-08 | 许继集团有限公司 | Coupling mechanism applied to wireless power transmission system of electric automobile |
| CN211606203U (en) * | 2020-03-23 | 2020-09-29 | 深圳市郎益科技有限公司 | Foldable charging device |
| CN112277669A (en) * | 2020-11-06 | 2021-01-29 | 湖北工业大学 | Segmented coil type electric automobile dynamic wireless charging system and method |
| CN112572177A (en) * | 2020-11-26 | 2021-03-30 | 安徽佑赛科技股份有限公司 | Wireless charging station transmitting coil adjusting device |
| US20210119493A1 (en) * | 2018-07-06 | 2021-04-22 | Vivo Mobile Communication Co.,Ltd. | Wireless charging transmitting circuit, wireless charging receiving circuit, and method |
| DE102020100115A1 (en) * | 2020-01-06 | 2021-07-08 | Firat Alin | Inductive charger |
| CN113612320A (en) * | 2021-08-16 | 2021-11-05 | 南京航空航天大学 | Wireless charging foreign matter detection device and method and wireless charging system |
| CN214674562U (en) * | 2021-03-12 | 2021-11-09 | 中惠创智（深圳）无线供电技术有限公司 | Wireless charging device and robot |
| CN215120286U (en) * | 2021-02-05 | 2021-12-10 | 广东长柏电器实业有限公司 | Telescopic folding rotary wireless charging device, kitchen appliance and charging equipment |
| CN113844286A (en) * | 2021-10-28 | 2021-12-28 | 南方电网科学研究院有限责任公司 | Wireless charging system of electric automobile |
-
2022
- 2022-07-22 CN CN202210861069.8A patent/CN115284900B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443860A (en) * | 2006-05-11 | 2009-05-27 | 株式会社田村制作所 | Coil and coil shaping method |
| US20120007549A1 (en) * | 2010-07-09 | 2012-01-12 | Sony Corporation | Wireless charging device and wireless charging system |
| US20160141097A1 (en) * | 2014-11-14 | 2016-05-19 | Motorola Solutions, Inc | Multi-plane receiving coil for wirelessly charging a battery |
| KR101627798B1 (en) * | 2015-11-04 | 2016-06-13 | (주)그린파워 | Wireless charging electric vehicle and method thereof |
| US20190074720A1 (en) * | 2016-03-31 | 2019-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Primary Coil Unit |
| US20180015832A1 (en) * | 2016-07-12 | 2018-01-18 | Denso International America, Inc. | Vehicular Wireless Power Transfer System With Performance Monitoring |
| CN107813714A (en) * | 2016-09-13 | 2018-03-20 | 现代自动车株式会社 | The method and apparatus that wireless power conveying is carried out using multiple transmit coils |
| CN206370711U (en) * | 2016-12-28 | 2017-08-01 | 深圳市钰品技术有限公司 | Folding movable power supply wireless charger |
| CN108155728A (en) * | 2017-12-29 | 2018-06-12 | 武汉大学 | One kind is for unmanned plane dynamic stability continuation of the journey wireless charging system |
| CN108382220A (en) * | 2018-01-26 | 2018-08-10 | 清华大学 | Wireless charging magnetic coupler between the electronic automobile-used traveling of one kind |
| US20210119493A1 (en) * | 2018-07-06 | 2021-04-22 | Vivo Mobile Communication Co.,Ltd. | Wireless charging transmitting circuit, wireless charging receiving circuit, and method |
| DE102020100115A1 (en) * | 2020-01-06 | 2021-07-08 | Firat Alin | Inductive charger |
| CN211606203U (en) * | 2020-03-23 | 2020-09-29 | 深圳市郎益科技有限公司 | Foldable charging device |
| CN111641274A (en) * | 2020-06-09 | 2020-09-08 | 许继集团有限公司 | Coupling mechanism applied to wireless power transmission system of electric automobile |
| CN112277669A (en) * | 2020-11-06 | 2021-01-29 | 湖北工业大学 | Segmented coil type electric automobile dynamic wireless charging system and method |
| CN112572177A (en) * | 2020-11-26 | 2021-03-30 | 安徽佑赛科技股份有限公司 | Wireless charging station transmitting coil adjusting device |
| CN215120286U (en) * | 2021-02-05 | 2021-12-10 | 广东长柏电器实业有限公司 | Telescopic folding rotary wireless charging device, kitchen appliance and charging equipment |
| CN214674562U (en) * | 2021-03-12 | 2021-11-09 | 中惠创智（深圳）无线供电技术有限公司 | Wireless charging device and robot |
| CN113612320A (en) * | 2021-08-16 | 2021-11-05 | 南京航空航天大学 | Wireless charging foreign matter detection device and method and wireless charging system |
| CN113844286A (en) * | 2021-10-28 | 2021-12-28 | 南方电网科学研究院有限责任公司 | Wireless charging system of electric automobile |
Non-Patent Citations (5)
| Title |
|---|
| YIMING WANG: "Calculation and Modeling Analysis of Mutual Inductance Between Coreless Circular Coils With Rectangular Cross Section in Arbitrary Spatial Position", 2020 IEEE 5TH INFORMATION TECHNOLOGY AND MECHATRONICS ENGINEERING CONFERENCE (ITOEC), 16 July 2020 (2020-07-16) * |
| 付文财: "电动汽车无线充电效率研究及充电装置设计", 中国优秀硕士学位论文全文数据库, 15 February 2022 (2022-02-15) * |
| 李文政: "电动汽车无线充电系统宽偏移度研究与实现", 中国优秀硕士学位论文全文数据库, 15 June 2018 (2018-06-15) * |
| 王幸琪: "无人机无线充电系统耦合机构及复合式补偿拓扑研究", 中国优秀硕士论文全文数据库, 15 October 2022 (2022-10-15) * |
| 薛天格;刘克诚;: "基于串并补偿的无线充电系统的线圈偏移研究", 电子测量技术, no. 16, 23 August 2020 (2020-08-23) * |
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