A wireless charging transmitter plate alignment structure driven by a conductive magnetic field

Abstract

The present invention belongs to the field of electric vehicle power supply, and specifically discloses a wireless charging transmitter plate alignment structure driven by a conductive magnetic field. A guide channel with openings at both ends is formed inside the installation shell and is used for the left and right transverse movement of the wireless transmitter plate. Sensors are installed at both ends of the wireless transmitter plate. A first stator assembly is provided inside the wireless transmitter plate, and a first rotor assembly is installed on the receiving plate. Two second stator assemblies are respectively installed in the base corresponding to two sets of lifting scissor fork mechanisms, and a second rotor assembly that cooperates with the second stator assembly is embedded in the drive block. The present invention sets the wireless transmitter plate as a structure that can move laterally independently, uses sensors provided at both ends of the wireless transmitter plate for alignment monitoring, and can adjust the alignment according to the offset position of the receiving plate to ensure the maximum effective charging receiving area and improve charging efficiency. The stator assembly and the rotor assembly are combined to form a drive structure with a simple structure and strong controllability. It also greatly simplifies the internal structure of the charging device and saves space.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicle power supply, and in particular to a wireless charging transmitter plate alignment structure driven by a conductive magnetic field. Background Art

[0002] An electric vehicle, or electrically powered vehicle, is also known as an electric vehicle. Electric vehicles are categorized as either AC or DC. Generally speaking, an electric vehicle uses batteries as its energy source. It uses components such as controllers and motors to convert electrical energy into mechanical motion, controlling the current flow to change speed. Electric vehicle charging methods are categorized into two main types: wired charging and wireless charging. Wireless charging, or contactless charging, involves installing a wireless charging transmitter on the ground and a receiver board on the underside of the vehicle. To charge, the car is parked over the transmitter, aligning the receiver board with the transmitter. The transmitter emits electromagnetic waves, which the receiver board receives and converts into electrical current, resulting in charging. Wireless charging is gaining increasing acceptance due to its ease of use.

[0003] Currently, wireless chargers for electric vehicles are set on the ground. Due to errors in parking, it is impossible to ensure that the charging receiving plate of the vehicle is facing the transmitting plate of the corresponding wireless charging device, resulting in a small effective charging receiving area and low charging efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a wireless charging transmitter plate alignment structure driven by a conductive magnetic field to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wireless charging transmitter plate alignment structure driven by a conductive magnetic field, comprising a base and a mounting housing positioned above the base, wherein a wireless transmitter plate is embedded in the mounting housing, and a guide channel with two open ends is formed therein for the wireless transmitter plate to move horizontally. A sensor is mounted at each end of the wireless transmitter plate, and a first stator assembly is disposed within the wireless transmitter plate. A first rotor assembly that cooperates with the first stator assembly is mounted on a receiving plate corresponding to the wireless transmitter plate. The mounting housing and the base are connected by two sets of lifting scissor fork mechanisms, each set of lifting scissor fork mechanisms comprising two cross-connected and rotatably connected lifting rods, wherein the ends of one lifting rod are respectively mounted on the mounting housing and the base via connecting plates, and the upper end of the other lifting rod is slidably connected to the bottom surface of the mounting housing via a guide block, and the lower end of the other lifting rod is slidably connected to the top of the base via a drive block. Two second stator assemblies are mounted in the base corresponding to the two sets of lifting scissor fork mechanisms, and a second rotor assembly that cooperates with the second stator assembly is embedded in the drive block.

[0006] Preferably, the first stator assembly and the second stator assembly are both composed of a plurality of N and S magnetic poles that are alternately arranged and distributed, and coils wound around the magnetic poles.

[0007] Preferably, the first rotor assembly and the second rotor assembly are both composed of a plurality of N and S magnetic poles that are alternately arranged and distributed.

[0008] Preferably, the top surface of the mounting shell is composed of a protective plate, and the protective plate is made of acrylic material.

[0009] Preferably, the connecting plate, the guide block, the driving block and the end of the lifting rod are all rotatably connected.

[0010] Preferably, a guide groove slidably connected to the guide block is provided at the bottom of the mounting shell, and a sliding groove for the driving block to be embedded and moved is correspondingly provided on the top surface of the base.

[0011] Preferably, an integrated controller is installed on the base, and the integrated controller is connected to the control ends of the sensor, the first stator assembly and the second stator assembly respectively.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention sets the wireless transmitting plate as a structure that can be independently moved laterally, and uses sensors set at both ends to monitor the position. It can adjust the position according to the offset position of the receiving plate to ensure the maximum effective charging receiving area and improve charging efficiency.

[0014] 2. The present invention utilizes the principle that a current-carrying conductor generates a force in a magnetic field, combines a stator assembly with a rotor assembly to form a drive structure, and achieves bidirectional drive adjustment by changing the direction of the coil current in the stator assembly. It can serve as a power source for the lateral movement and lifting of the wireless transmitter board. It has a simple structure, strong controllability, and greatly simplifies the internal structure of the charging device, saving space, and has low noise and strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the wireless transmitting plate of the present invention moving rightward;

[0017] Figure 3 This is a schematic diagram of the wireless transmitting board of the present invention moving left.

[0018] In the figure: 1. Base; 2. Mounting shell; 3. Wireless transmitter board; 4. Guide channel; 5. Sensor; 6. Connecting plate; 7. First stator assembly; 8. Receiving plate; 9. First rotor assembly; 10. Protective plate; 11. Lifting rod; 12. Guide block; 13. Driving block; 14. Guide groove; 15. Slide groove; 16. Second stator assembly; 17. Second rotor assembly. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] The present invention provides a technical solution: a wireless charging transmitter plate alignment structure driven by a conductive magnetic field, comprising a base 1 and a mounting shell 2 placed above the base 1, wherein a wireless transmitter plate 3 is embedded in the mounting shell 2, and the top surface of the mounting shell 2 is composed of a protective plate 10, which is made of acrylic material; an integrated controller is installed on the base 1, and the integrated controller is respectively connected to the control ends of the sensor 5, the first stator assembly 7 and the second stator assembly 16.

[0023] Example 1: Please refer to Figure 1-3A guide channel 4 with openings at both ends and for the wireless transmitter board 3 to move left and right is formed inside the mounting shell 2. A sensor 5 is installed at each end of the wireless transmitter board 3. A first stator assembly 7 is provided inside the wireless transmitter board 3. A first rotor assembly 9 that cooperates with the first stator assembly 7 is installed on the receiving board 8 corresponding to the wireless transmitter board 3.

[0024] In this embodiment, the first stator assembly 7 is composed of a plurality of N and S magnetic poles that are alternately arranged and distributed, and coils and a commutator wound around the magnetic poles.

[0025] In this embodiment, the first rotor assembly 9 is composed of a plurality of N and S magnetic poles that are alternately arranged and distributed.

[0026] Utilizing the principle that a current-carrying conductor generates a force in a magnetic field, when an AC power source is applied to the coil of the stator assembly, a traveling wave magnetic field is generated in the air gap. When the traveling wave magnetic field cuts through the rotor assembly, an electromotive force is induced and a current is generated. This current interacts with the magnetic field in the air gap to generate electromagnetic thrust. If the rotor assembly is fixed, the stator assembly moves in a straight line under the action of the thrust. By changing the direction of the current (the alternating electromotive force induced in the armature coil is converted into a DC electromotive force when it is drawn out from the brush end by the commutator on the coil and the commutation action of the brush), the direction of the thrust, i.e., the direction of movement of the stator assembly, can be controlled.

[0027] When the vehicle enters its position, the sensors 5 (infrared sensors) at both ends of the wireless transmitter board 3 respectively monitor the positions of the two ends of the vehicle charging receiving board 8 and send signals to the integrated controller, which analyzes and determines the offset position of the receiving board 8, and then energizes the coil in the first stator assembly 7 to control its current direction, and moves the wireless transmitter board 3 to the right along the guide channel 4 ( Figure 2 ) or left shift ( Figure 3 ) until it is facing the receiving plate 8 to ensure the maximum effective charging receiving area.

[0028] Example 2: Please refer to Figure 1 The mounting shell 2 and the two sides of the base 1 are connected by two sets of lifting scissor fork mechanisms. Each set of lifting scissor fork mechanisms includes two cross- and rotatably connected lifting rods 11, wherein the two ends of one lifting rod 11 are respectively installed on the mounting shell 2 and the base 1 through a connecting plate 6, and the upper end of the other lifting rod 11 is slidably connected to the bottom surface of the mounting shell 2 through a guide block 12, and the lower end is slidably connected to the top of the base 1 through a driving block 13; two second stator assemblies 16 are respectively installed in the base 1 corresponding to the two sets of lifting scissor fork mechanisms, and the driving block 13 is embedded with a second rotor assembly 17 that cooperates with the second stator assembly 16.

[0029] In this embodiment, the connecting plate 6 , the guide block 12 , the driving block 13 and the end of the lifting rod 11 are all rotatably connected.

[0030] In this embodiment, a guide groove 14 slidably connected to the guide block 12 is provided at the bottom of the mounting shell 2 , and a corresponding sliding groove 15 for the driving block 13 to be inserted and moved is provided on the top surface of the base 1 .

[0031] In this embodiment, the second stator assembly 16 is composed of a plurality of alternately arranged N and S magnetic poles and coils wound around the magnetic poles.

[0032] In this embodiment, the second rotor assembly 17 is composed of a plurality of N and S magnetic poles that are alternately arranged and distributed.

[0033] In this embodiment, the top surface of the mounting housing 2 is composed of a protective plate 10 , and the protective plate 10 is made of acrylic material.

[0034] When the wireless transmitter board 3 is aligned, its height position is adjusted (the height adjustment can also be completed before alignment). A distance sensor is installed in the middle of the wireless transmitter board 3, and its output end is connected to the integrated controller. The distance sensor detects the distance signal between the wireless transmitter board 3 and the receiving board 8 and sends it to the integrated controller. The integrated controller triggers the coil in the second stator assembly 16 to energize and control its current direction. Since the second stator assembly 16 is fixed, the driving block 13 with the second rotor assembly 17 is pushed to move horizontally, driving the corresponding lifting rod 11 of the lifting scissors fork mechanism to move right or left, thereby realizing the lifting and lowering of the wireless transmitter board 3 until the set distance difference with the receiving board 8 is reached, ensuring the optimal charging and receiving distance.

[0035] It is worth noting that the entire device is controlled by an integrated controller. Since the control connection matching devices are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wireless charging transmitter plate alignment structure driven by a conductive magnetic field, comprising a base (1) and a mounting shell (2) placed above the base (1), characterized in that: The installation shell (2) is embedded with a wireless transmitter board (3), and a guide channel (4) with two ends open and for the wireless transmitter board (3) to move horizontally to the left and right is formed inside the installation shell (2). A sensor (5) is installed at each end of the wireless transmitter board (3). A first stator assembly (7) is provided inside the wireless transmitter board (3), and a first rotor assembly (9) that cooperates with the first stator assembly (7) is installed on a receiving board (8) corresponding to the wireless transmitter board (3). The installation shell (2) and the two sides of the base (1) are connected by two sets of lifting scissor fork mechanisms, and each set of lifting scissor fork mechanisms includes two lifting rods (11) that are crossed and rotatably connected. The two ends of one lifting rod (11) are respectively mounted on the mounting shell (2) and the base (1) via a connecting plate (6); the upper end of the other lifting rod (11) is slidably connected to the bottom surface of the mounting shell (2) via a guide block (12), and the lower end thereof is slidably connected to the top of the base (1) via a driving block (13); two second stator assemblies (16) are respectively mounted in the base (1) corresponding to the two sets of lifting scissor fork mechanisms; a second rotor assembly (17) cooperating with the second stator assembly (16) is embedded in the driving block (13); an integrated controller is mounted on the base (1), and the sensor sends a signal to the integrated controller.

2. The wireless charging transmitter alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The first stator assembly (7) and the second stator assembly (16) are both composed of a plurality of N and S magnetic poles that are alternately arranged and distributed, and coils wound around the magnetic poles.

3. The wireless charging transmitter plate alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The first rotor assembly (9) and the second rotor assembly (17) are both composed of a plurality of N and S magnetic poles that are alternately arranged and distributed.

4. The wireless charging transmitter alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The top surface of the mounting shell (2) is composed of a protective plate (10), and the protective plate (10) is made of acrylic material.

5. The wireless charging transmitter plate alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The connecting plate (6), the guide block (12), the driving block (13) and the end of the lifting rod (11) are all rotatably connected.

6. The wireless charging transmitter plate alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The bottom of the mounting shell (2) is provided with a guide groove (14) slidably connected to the guide block (12), and the top surface of the base (1) is correspondingly provided with a sliding groove (15) for the driving block (13) to be embedded and moved.

7. The wireless charging transmitter plate alignment structure driven by a conductive magnetic field according to claim 1, characterized in that: The integrated controller is respectively connected to the control ends of the sensor (5), the first stator assembly (7) and the second stator assembly (16).

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