Wireless charger with precision alignment

Abstract

Wireless Charger with Precision Alignment The invention is a charging unit (200) for wireless charging of electric vehicles (100) comprising at least one receiving unit (102) configured on the vehicle (100), a transmitter unit (204) for transmitting energy to said receiving unit (102), characterized in that; a charging unit (200) for wireless charging of electric vehicles (100), characterized in that it comprises a receiver unit (102) configured in the bonnet region (101) of the vehicle (100), a transmitter unit (204) configured in the end part of the robot arm (203) that provides energy transfer to the said receiver unit (102) via the robot arm (203), and a camera (205) that recognizes the vehicles (100) by means of this smart module (208) and enables the robot arm (203) to take position with the directions of artificial intelligence.

Description

[0001] DESCRIPTION

[0002] WIRELESS CHARGER WITH PRECISION ALIGNMENT Technical Field

[0003] The invention relates to a unit for wireless charging of electric vehicles.

[0004] The invention in question is a charging unit that performs the charging process by using the cooling feature by providing precise alignment and appropriate distance by means of a receiver configured in the bonnet region of the vehicle and a transmitter configured with a robot or robot arm.

[0005] Prior Art

[0006] Wireless charging technology stands out as a practical charging method in the electric vehicle sector and is an alternative charging system for electric vehicle users, this technology provides convenience by freeing electric vehicles from cables and sockets that may differ for each unit attached at the ends.

[0007] In the wireless charging system, charging starts when the vehicle is parked in a ground-mounted electric field. The efficiency of the charging process is ensured by the transferred distance and the proper alignment of the transceiver coil.

[0008] The wireless charging system offers charging without the need for a cable connection, provides a solution to the problem of different socket types of different models of vehicles, provides a practical solution for charging autonomous vehicles, and reduces carbon emissions as it saves cables.

[0009] Wireless charging techniques vary and are provided by a receiver mounted on the underside of the vehicle. The transmitter system is a stationary system mounted on the ground on a flat surface, which can cause some technical and security problems because it is exposed.

[0010] Mounting the receiver system under the vehicle and fixing the transmitter to the ground leaves the driver's alignment ability in control of the most important issue in energy transfer, which is alignment. Efficient transfer is possible when the receiverand transmitter overlap and overlap, and the distance between the receiver under the vehicle and the ground forces the transfer to be made at that distance. In the event of ground shaking and earthquakes, the ground-mounted transmitter is likely to be damaged and shift. Therefore, when the distance increases and the alignment is not properly aligned, there may be losses in the energy transferred and the cost of the energy received may increase. In addition, in a floor-mounted system, it is possible for a living creature to touch and damage it.

[0011] In the current state of the art, wireless charging is mostly provided by a receiver configured on the underside of the vehicle. Configuring the wireless receiver unit under the vehicle naturally requires the transmitter system to be configured on a flat surface. This causes some technical problems.

[0012] The configuration of the receiver system on the underside of the vehicle does not allow for accurate and efficient charging. The transceiver coils that enable wireless charging must be matched in a precise center. But this matching depends on user initiative and capability. It is therefore often not possible for the driver to achieve a precise match. In this case, charge transfer at the desired values cannot be achieved.

[0013] Without proper alignment in the wireless charging process, energy values are not transferred at the desired rate. This not only causes energy losses, but also causes drivers to overpay and underfill.

[0014] Some patents were found in the patent research on the existing technique. US patent number US2022134893A1; A wireless autonomous electric vehicle charging system and method comprising a charging station configured to receive electrical energy from an external source, a plurality of charging pads, each charging pad comprising a rechargeable battery and configured to be charged by the charging station, and a plurality of charging pads configured to be placed under an EV for wirelessly charging a battery of the EV, and an autonomous robot, autonomous robot configured to pick up one or more charging pads from a charging station and deliver the charging pad to an EV, where upon placement of the charging pad under the EV, the charging pad wirelessly charges the EV's battery."The wireless charging station for electric vehicles includes a charging station body for charging cars, characterized in that an adjustment mechanism is provided on an outer surface of the charging station body; the adjustment mechanism includes a first rotary frame arranged on an outer wall of the charging station body, a rotary adjustment frame rotatably mounted on an inner side of the first rotary frame, and a rotary adjustment frame. There is a second turret away from the other end of the first turret and a protection mechanism outside the second turret.

[0015] Another Chinese patent No. CN117227522A ; The wireless charging alignment system includes a multi-directional mobile platform; the signal sending unit is disposed on one of the electric vehicle and the multi-directional mobile platform; the signal receiving unit is disposed on the other of the electric vehicle and the multidirectional mobile platform; the electronic control unit is configured to control the omnidirectional mobile platform to perform omnidirectional movement to enable the signal sending unit and the signal receiving unit to complete the alignment process by sending and receiving alignment signals respectively; therefore, the wireless charging sending coil arranged on the omnidirectional mobile platform is aligned with the wireless charging receiving coil arranged on the electric vehicle to realize wireless charging.

[0016] Disclosure of Invention

[0017] The aim of the invention is to introduce a system that offers different advantages that bring a new opening in this field, unlike the wireless charging systems used in the current technique.

[0018] The most important aim of the invention is to provide a wireless charging system that provides accurate and precise alignment without leaving it to the user's initiative by using artificial intelligence.

[0019] A further object of the invention is to position the receiver unit for wireless charging in the vehicle bonnet region. Thus, a more accurate and efficient charging is done by charging from the bonnet region. The bonnet region of the vehicle is an area with fewer electrical components compared to the lower surface of the vehicle.Therefore, the absence of power cables and other electrical components ensures highly efficient wireless charging efficiency.

[0020] Another aim of the invention is to enable the recognition of vehicles with the data of all electric vehicles that have already been introduced to the artificial intelligence. When the robot of the charging unit, which has an artificial intelligence module that recognizes the vehicles, approaches the bonnet region of the vehicle, it knows in advance which vehicle will be aligned at which point. This enables precise and fast matching of transceivers.

[0021] Another important purpose of the invention is to ensure that alignment is achieved precisely with artificial intelligence, ensuring the complete and accurate transfer of energy. This allows drivers to recharge in proportion to the amount they pay.

[0022] Another important object of the invention is to provide cooling plates in the transmitter and receiver units. By means of cooling plates, the temperature generated in the receiver and transmitter units is efficiently dissipated by means of the cooling plates. This makes wireless charging efficient.

[0023] Another important aim of the invention is that after the charging process is over, the transmitter unit is placed in the retracted position together with the robot arm and inserted into the slot on the unit. Thus, it is to ensure occupational safety by preventing work accidents due to possible live contact and environmental impact (rain, snow, bora, etc.).

[0024] Another important purpose of the invention is that the charging unit has the ability to charge more than one vehicle by moving.

[0025] Figures to Help Understand the Invention

[0026] Figure-1 is a representative view of the electric vehicle docked to the wireless charging unit subject to the invention.

[0027] Figure-2; Individual view of the wireless charging unit subject to the invention. Figure-2.1 ; In the wireless charging unit subject to the invention, the robot arm and the transmitter group are folded and in the active position.Figure-3; Two-dimensional view of the receiver / transmitter block from the front and side.

[0028] Figure-4; Two-dimensional view of the receiver / transmitter block from the front and side.

[0029] Figure-5; Two-dimensional front and side view of the receiving unit block with cores. Figure-6; Simulation image of the Transmitter / Receiver coils.

[0030] Part Numbers

[0031] 100-Vehicle

[0032] 101 -Bonnet region

[0033] 102-Receiver unit

[0034] 200-Charging unit

[0035] 201 -Linear Ray

[0036] 202-Slide

[0037] 203-Robot Arm

[0038] 204-Transmitter unit

[0039] 205-Camera

[0040] 206-lnverter

[0041] 207-Rectifier

[0042] 208-Smart module

[0043] 209-Lower Rail

[0044] 210-Coil Slot

[0045] 300-Storage block

[0046] 301 -Wire gap302- Litz teller

[0047] 303-Cooling plate

[0048] 304- Connection elements

[0049] 305- Core

[0050] Detailed Description of the Invention

[0051] Figure-1 illustrates a representative view of the electric vehicle (100) docked to the wireless charging unit (200) which is the subject of the invention. The invention is a charging unit (200) for wireless charging of electric vehicles (100) comprising at least one receiving unit (102) configured on the vehicle (100), and a transmitting unit (204) for transmitting energy to said receiving unit (102). In order to ensure precise alignment of said receiver (102) transmitter (204) units and to increase charging efficiency, a receiver unit (102) is configured in the bonnet region (101) of the vehicle (100). The positioning of the receiver unit (102) in the bonnet region is very important, because the targeted precise alignment and efficient charging is only possible by configuring the receiver unit (102) in the bonnet region (101).

[0052] On the other hand, there is at least one transmitter unit (204) configured at the end part of the robot arm (203), which transmits energy to said receiving unit (102) via the robot arm (203). It includes a smart module (208) that detects the vehicle (100) approaching the charging unit (200) with artificial intelligence software and a camera (205) that recognizes the vehicles (100) through this smart module (208) and enables the robot arm (203) to take position with the directions of artificial intelligence. The charging unit is moved left and right in the Y- Y1 axis by means of an movement or drive element and the lower rail (209). The lower rail (209) has a long structure. In the case of 4.5 vehicles docking side by side, the unit (200) can move linearly on the rail (209) in the Y- Y1 directions to charge the vehicles respectively. In addition, in order to ensure occupational safety, a coil slot (210) has been formed in which the transmitter unit (204) is folded together with the robot arm (203) after the charging process is completed.

[0053] The camera (205) and the robot arm (203) have an important influence here. Moving the transmitter unit (204) with the robot arm (203) takes human initiative outof the equation. This is because in the prior art, vehicle drivers are expected to approach the station precisely. However, the camera (205) and the robot arm (203) bypass the human initiative and enable the alignment and matching of the transceiver units entirely by means of a smart module (208).

[0054] In order to convert the alternating current into direct current, a rectifier (207) is formed on the housing block (300) of the receiving unit (102). Multiple Inverters (206) have been created on the unit. Preferably 3 inverters. The energy coming from the grid is increased to the desired values by means of inverters (206).

[0055] Both receiver units (102) and transmitter units (204) comprise a housing block (300). A wire cavity (301 ) is formed on the housing block (300) for the positioning of the litz wires (302), and the connection of the units with the batteries and units is provided by connection elements (304). The cooling plate (303), which is positioned above the litz wires (302) on the said housing block (300) and prevents high heat generation, is formed. This plate has heat dissipating channels on it and the high heat generated on the units is minimized. The receiver unit (102) comprises a plurality of inductance-improving cores (305) formed on the housing block (300) to increase the coupling factor.

[0056] Here is how the system works: Vehicle (100) approaches the charging unit (200). When the vehicle (100) approaches the unit (200), the camera (205) configured on the unit (200) detects the vehicle. With the continuous update module installed on the smart module (208), the images of the vehicles can be downloaded from the relevant web pages or manually by the operator. The robot arm (203) is made to move by means of artificial intelligence capable of reading and reasoning about the imaging that recognizes the vehicle. There is a linear rail (201 ) system that provides the vertical movement of the robot arm (203) in the Z-Z1 axis with the directions from the smart module (208) and a slide (202) on the linear rail (201) that provides the vertical movement in the Z-Z1 axis with the directions from the smart module (208). By means of this linear system, vertical axis movements and the movement of the transmitter unit (204) in multiple axes of the robot arms (203) are provided.Figure-6; The simulation image of the receiver / transmitter coils is illustrated. The alignment of the transceiver coils with mutual overlap in distance is shown for efficient energy transfer.

[0057] In the graph below; when the X-axis horizontal axis distance is increased between 100 mm and 110 mm in millimeters, the K value (the coupling coefficient expressing the strength of the magnetic connection should be between 01 and 05 in efficient transfer) decreases from 0.09598 to 0.084. The same applies to misalignment and slippage. The change in energy transfer that occurs with such a small change shows the importance of alignment.

[0058]

[0059] In the graph below; at a distance of 80mm on the X axis, the corresponding k value on the Y axis: 0.1224

[0060] k value at 100mm: 0.0954

[0061] k value at 110 mm: 0.0850

[0062] k value at 130 mm: 0.0683

[0063] At 150 mm, the value of k 0.0557. The k value (coefficient of coupling) decreases as the distance increases and the coils are not perfectly aligned. Therefore, the value of M (mutual interaction) decreases. These formulas clearly show that mutual alignment and optimal distance must be achieved.

[0064]

[0065] L1 and L2 represent the coils.

[0066] M represents mutual interaction.

[0067] k value (coefficient of coupling)

[0068]

[0069] Vehicle recognition system operation steps:

[0070] Vehicle Detection and Recognition

[0071] • The camera detects the vehicle and captures an image.

[0072] • The image processing module recognizes the make and model of the vehicle (for example, a YOLO or OpenCV based model can be used).

[0073] • Vehicle dimensions are determined (estimated from license plate or makemodel data or measured directly by image processing).

[0074] Data Processing and Decision Making

[0075] • The make and model of the vehicle is queried in a database.

[0076] • The appropriate charging scenario is determined according to size (e.g. small, medium, large vehicle).

[0077] Robot Motion Control

[0078] • A movement plan is drawn up according to the size of the vehicle.

[0079] • Robot arms and charging units are optimized.• Precise alignment is performed.

[0080] Charging Process

[0081] • The robot approaches the vehicle bonnet with the directions it receives. • Set the optimal distance and start charging

[0082] Output and Reporting

[0083] • After charging is complete, the system recognizes the vehicle and saves it in a database (for customer tracking).

[0084] • The amount of energy transferred is calculated, charged and paid via the customer's credit card or the application.

[0085] • A feedback mechanism or customer satisfaction survey can be implemented.

[0086]

Claims

CLAIMS1 - The invention relates to a charging unit (200) for wireless charging of electric vehicles (100) comprising at least one receiving unit (102) configured on the vehicle (100), a transmitter unit (204) providing energy transfer to said receiving unit (102), characterized in that; to ensure precise alignment of said receiving (102) transmitter (204) units and to increase charging efficiency; - receiver unit (102) configured on the vehicle (100),- a transmitter unit (204) configured at the end of the robot arm (203), which transmits energy to said receiving unit (102) via the robot arm (203), - smart module (208) that detects the vehicle (100) approaching the aforementioned charging unit (200) with artificial intelligence software, - and a camera (205) that recognizes the vehicles (100) by means of this smart module (208) and enables the robot arm (203) to take position with the directions of artificial intelligence.2- The charging unit (200) according to claim 1, characterized in that it comprises a housing block (300) having a wire cavity (301) and connection elements (304) for positioning litz wires (302) on both said receiving units (102) and said transmitting units (204).3- The charging unit (200) according to any one of claims 1 and 2, characterized in that said housing block (300) comprises a cooling plate (303) positioned above the litz wires (302) on said housing block (300) to prevent the generation of high temperatures.4- The charging unit (200) according to any one of claims 1,2 and 3, characterized in that said receiving unit (102) comprises a rectifier (207) formed on the housing block (300).5- The charging unit (200) according to claim 1, characterized in that it comprises a linear rail (201) system for vertical movement of the robot arm (203) in the Z-Z1 axis with guidance from said smart module (208).6- The charging unit (200) according to claim 5, characterized in that said linear rail (201 ) comprises a slide (202) which provides vertical movement in the Z- Z1 axis on said linear rail (201 ) with guidance from the smart module (208).7- The charging unit (200) according to any one of the preceding claims, characterized in that it comprises a coil housing (210) in which the transmitter unit (204) is folded together with the robot arm (203) after the end of the charging process to ensure occupational safety.8- The charging unit (200) according to any one of the preceding claims, characterized in that said charging unit comprises a lower rail (209) which enables the said charging unit to move left and right in the Y-Y1 axis by means of a movement or drive element.9- The charging unit (200) according to any one of the preceding claims, characterized in that it comprises a receiver unit (102) configured in the bonnet region (101 ) of the vehicle (100).10-The charging unit (200) according to any one of the preceding claims, characterized in that it comprises a receiver unit (102) configured on the lower surface of the vehicle (100).

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