Wireless charging transmitting terminal device and parking system thereof

Abstract

The wireless charging transmitting end device comprises a transmitting end body of a cavity-shaped structure, a magnetism isolating cavity, a first ferrite magnetism isolating sheet and a transmitting coil are arranged in the transmitting end body, the first ferrite magnetism isolating sheet and the transmitting coil are both wound on the periphery of the magnetism isolating cavity, the magnetism isolating cavity is installed on the bottom wall of the inner side of the transmitting end body, and the first ferrite magnetism isolating sheet is installed on the bottom wall of the inner side of the transmitting end body. A resonant capacitor assembly and two compensation inductors are arranged in the transmitting terminal body, the two compensation inductors are symmetrically distributed on the two sides of the resonant capacitor assembly, the bottom of a first ferrite magnetic isolation sheet is attached to the bottom wall of the inner side of the transmitting terminal body, the top of the first ferrite magnetic isolation sheet is covered with an insulating paint layer, and a transmitting coil is installed above the insulating paint layer. And the energy transmission efficiency is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle wireless charging technical field, especially a wireless charging transmitting end device and parking system thereof. BACKGROUND

[0002] The charging problem of electric vehicles has been one of the difficulties of use. Due to the weight and volume limitation of the battery, the electric vehicle needs to be charged regularly or at a certain distance. The traditional wired charging is time-consuming and laborious, and needs to be connected with a wired cable and a heavy gun body. At the same time, the poor contact of wired charging may cause safety problems under large current. Compared with the traditional wired charging mode, wireless charging has been widely concerned due to its safety, reliability and full automation, and will be the key technical direction in the future.

[0003] The feature of wireless charging of electric vehicles is that the transmitting coil installed at the ground end and the receiving coil installed at the vehicle end need to form a coupling relationship when working, as shown in Figure 1 , which gives the block diagram of the wireless charging system of electric vehicles. The external power supply network provides 220V or 380V alternating power, which is converted into high-voltage direct current power inside the system, and then converted into 79kHz to 90kHz high-frequency alternating current through high-frequency inversion. After compensation network and impedance matching, the transmitting coil transmits radio waves to the receiving coil. The receiving coil and the transmitting coil usually need to be centered physically to ensure the transmission efficiency of energy. The receiving coil generates corresponding power, which is connected to the charging management system at the vehicle end after rectification and voltage regulation, and then charges the vehicle-mounted battery after docking with the BMS system of the vehicle battery pack. In addition to power transmission, the transmitting end also needs to be equipped with corresponding position detection and foreign matter detection or foreign matter prevention systems to prevent foreign matter from entering between the transmitting and receiving coils, to ensure safe operation during charging. There are corresponding control units at the transmitting end and the receiving end, and they are connected through wireless communication to exchange the required control and operation information. At the same time, the receiving system at the vehicle end also needs a wireless charging user interface for the user to observe and manage the corresponding charging process. The transmitting end also has a user management system connected with the cloud, which is used for necessary operations such as parking space management and metering and charging during charging.

[0004] Further, as shown in Figure 2 , the transmitting coil and network topology of the wireless charging of electric vehicles are given. L1 and L2 in the figure are compensation inductors, and L3 is a transmitting coil. C1, C2 and C3 are resonance capacitors. The compensation inductors and resonance capacitors among them are power devices, which will pass through high-voltage and large current when working, and often produce line loss due to the long connection line of these devices and the reflecting coil, especially high-frequency loss. In addition, a lot of heat will also be generated, so how to reasonably layout the transmitting coil and each device is a technical problem that needs to be solved by the person skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a wireless charging transmitter device and its parking system to solve the problems existing in the prior art, significantly reduce line loss, and ensure energy transmission efficiency.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a wireless charging transmitter device, including a transmitter body with a cavity structure. The transmitter body has a magnetic shielding cavity, a first ferrite magnetic shielding sheet surrounding the outer periphery of the magnetic shielding cavity, and a transmitting coil inside. The magnetic shielding cavity is installed on the inner bottom wall of the transmitter body, and has a resonant capacitor assembly and two compensation inductors inside. The two compensation inductors are symmetrically distributed on both sides of the resonant capacitor assembly. The bottom of the first ferrite magnetic shielding sheet is attached to the inner bottom wall of the transmitter body, and its top is covered with an insulating varnish layer. The transmitting coil is installed above the insulating varnish layer.

[0007] Preferably, a recessed area is provided on the inner bottom wall of the transmitter body, and a magnetic shielding component is covered in the recessed area. The recessed area and the magnetic shielding component together form the magnetic shielding cavity.

[0008] Preferably, the magnetic shielding assembly includes a second ferrite magnetic shielding sheet in a ring structure, the outer peripheral side of the second ferrite magnetic shielding sheet is attached to the inner peripheral wall of the sinking area, the top end of the second ferrite magnetic shielding sheet extends out of the sinking area from above, and the top of the second ferrite magnetic shielding sheet is covered by a third ferrite magnetic shielding sheet.

[0009] Preferably, the sinking area is located at the center of the inner bottom wall of the transmitter body.

[0010] Preferably, the areas within the transmitter body where the magnetic shielding cavity, the first ferrite magnetic shielding sheet, and the transmitting coil are not located are filled with insulating and thermally conductive adhesive.

[0011] Preferably, the outer side of the bottom wall of the transmitter body is provided with a heat dissipation grille.

[0012] A parking system is also provided, including a mounting box embedded in the ground. A hinged bracket is provided on the top of the mounting box, and a rotating component is rotatably mounted on the hinged bracket. One end of the rotating component is located outside the mounting box and connected to a parking space stop. The parking space stop has the wireless charging transmitter device built into it. The other end of the rotating component is located inside the mounting box and connected to a drive mechanism that drives it to rotate. The parking space stop rotates with the rotating component and can be flush with the ground or at an angle to the ground. An opening is provided on the top surface of the mounting box for the rotating component to move.

[0013] Preferably, the driving mechanism is an electric cylinder, the cylinder body of the electric cylinder is rotationally connected to the side wall of the mounting box body, the telescopic rod of the electric cylinder extends horizontally, and the extending end of the telescopic rod is rotationally connected to one end of the rotating piece which is not connected to the parking space stop.

[0014] Preferably, one side of the mounting box body is provided with a transmitting end control box embedded in the ground, the transmitting end control box is provided with a control mechanism electrically connected to the electric cylinder, the parking space stop is provided with a two-dimensional code for user scanning and identification, and the two-dimensional code is matched with a background cloud identification mechanism electrically connected to the control mechanism.

[0015] Preferably, the parking space stop is provided with a magnetic inductor for identifying the parking position of a vehicle to be charged.

[0016] The utility model discloses relative to prior art has obtained following technical effect:

[0017] By optimizing the distribution between the transmitting coil in the transmitting end body and the rest devices, the wiring between the devices and the transmitting coil can be shortened, thereby sufficiently reducing line loss, especially high frequency loss, ensuring that the transmitting coil transmits effective radio waves to the receiving coil, and thereby ensuring the transmission efficiency of energy. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is a wireless charging principle block diagram of electric vehicle;

[0020] Figure 2 It is a transmitting coil and network topology of wireless charging of electric vehicle;

[0021] Figure 3 It is a top view and side view of the overall structure of the transmitting end device in an embodiment of the utility model;

[0022] Figure 4 It is a side view and front view of the parking system in an embodiment of the utility model;

[0023] Wherein, 1 - heat dissipation grid, 2 - base, 3 - first ferrite magnetic separation sheet, 4 - transmitting coil, 5 - insulating heat-conducting glue, 6 - upper cover, 7 - magnetic separation assembly, 8 - resonance capacitor assembly, 9 - compensation inductance, 10 - magnetic inductor, 11 - two-dimensional code, 12 - mounting box, 13 - parking stall, 14 - wireless charging transmitting end device, 15 - hinged support, 16 - rotating member, 17 - driving mechanism, 18 - control box. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The utility model aims at providing a kind of wireless charging transmitting end device and parking system, to solve the problems existing in the prior art described above, fully reduce line loss, ensure the transmission efficiency of energy.

[0026] To make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0027] As Figures 3 to 4 As shown in the figure, the embodiment provides a kind of wireless charging transmitting end device, including the transmitting end body of cavity-like structure, preferably transmitting end body includes the base 2 formed by stamping, base 2 is made of aluminum alloy, base 2 is the groove-like structure with top opening, its top opening is covered with upper cover 6, upper cover 6 is made of high-temperature-resistant organic material, the setting of entire transmitting end body can facilitate the transmission of electromagnetic field, transmitting end body is equipped with magnetic separation cavity, first ferrite magnetic separation sheet 3 and transmitting coil 4 that are all around the outer circumferential side of magnetic separation cavity, magnetic separation cavity is installed on the inner side bottom wall of transmitting end body, its inside is equipped with resonance capacitor assembly 8 and two compensation inductances 9, two compensation inductances 9 are symmetrically distributed on the two sides of resonance capacitor assembly 8, the bottom of first ferrite magnetic separation sheet 3 is attached to the inner side bottom wall of transmitting end body, its top is covered with insulating paint layer, preferably first ferrite magnetic separation sheet 3 is about 10mm thick, transmitting coil 4 is installed above insulating paint layer, compensation inductance 9 and resonance capacitor are closed by magnetic separation cavity, to further cut off the electromagnetic field between transmitting coil 4 and compensation inductance 9 and resonance capacitor, reduce mutual interference. By optimizing the distribution between transmitting coil 4 and the rest of each device in transmitting end body, the connecting line between each device and transmitting coil 4 can be shortened, to further reduce line loss, especially high-frequency loss, ensure that transmitting coil 4 emits effective radio waves to receiving coil, to further ensure the transmission efficiency of energy.

[0028] In a specific embodiment, a sunken area is arranged on the inner bottom wall of the transmitting end body, and a magnetic isolation assembly 7 is arranged on the sunken area. The sunken area and the magnetic isolation assembly 7 form a magnetic isolation cavity. The magnetic isolation assembly 7 includes a second ferrite magnetic isolation sheet in a ring structure. The outer periphery of the second ferrite magnetic isolation sheet is attached to the inner periphery wall of the sunken area, and the top end of the second ferrite magnetic isolation sheet extends out of the sunken area. The top of the second ferrite magnetic isolation sheet is covered by a third ferrite magnetic isolation sheet. Through the cooperation of the sunken area, the second ferrite magnetic isolation sheet and the third ferrite magnetic isolation sheet, the electromagnetic field between the transmitting coil 4, the compensation inductor 9 and the resonance capacitor is effectively cut off, and the mutual interference is reduced. Preferably, the sunken area is located at the center of the inner bottom wall of the transmitting end body, further optimizing the position distribution between the first ferrite magnetic isolation sheet 3, the transmitting coil 4 and the magnetic isolation cavity.

[0029] In a specific embodiment, the position where the magnetic isolation cavity, the first ferrite magnetic isolation sheet 3 and the transmitting coil 4 are not arranged in the transmitting end body is filled with insulating heat-conducting glue 5. Preferably, a heat dissipation grid 1 is arranged on the outer bottom wall of the transmitting end body. Through the cooperation of the insulating heat-conducting glue 5 and the heat dissipation grid 1, sufficient heat dissipation of the devices in the transmitting end body is achieved, and the service life is prolonged.

[0030] Further, a parking system is provided, which includes a mounting box 12 embedded in the ground. A hinged support 15 is arranged above the mounting box 12. A rotating member 16 is rotatably arranged on the hinged support 15. One end of the rotating member 16 is located outside the mounting box 12 and connected with a parking stop 13. The parking stop 13 is internally provided with a wireless charging transmitting end device 14. The other end of the rotating member 16 is located inside the mounting box 12 and connected with a driving mechanism 17 for driving the rotation of the rotating member 16. The parking stop 13 rotates with the rotating member 16 and can be arranged horizontally with the ground or at an inclined angle with the ground. An opening is arranged on the top surface of the mounting box 12 for the movement of the rotating member 16. Before the arrival of a vehicle to be charged, the parking stop 13 is flipped upwards under the driving of the driving mechanism 17 and arranged at an inclined angle with the ground, so as to avoid the occupation of the parking space by vehicles that do not need to be charged. After the arrival of the vehicle to be charged, the driving mechanism 17 drives the rotating member 16 to rotate the parking stop 13 around the hinged support 15, so that the parking stop 13 is rotated horizontally with the ground, so that the vehicle to be charged drives above the parking stop 13, and then the transmitting coil 4 in the parking stop 13 is coupled with the receiving coil on the vehicle to be charged, so as to realize energy transmission. Further, before the arrival of the vehicle to be charged, the parking stop 13 is flipped upwards under the driving of the driving mechanism 17 and arranged at an inclined angle with the ground, so that foreign matters falling on the parking stop 13 will also slide down due to the inclined arrangement of the parking stop 13, thereby preventing the foreign matters from falling into the transmitting coil 4 and the receiving coil and affecting the charging process.

[0031] In a specific embodiment, the driving mechanism 17 is an electric cylinder, the cylinder body of which is rotationally connected to the side wall of the mounting box 12, the telescopic rod of which extends horizontally, and the extending end of which is rotationally connected to one end of the rotating piece 16 not connected to the parking stop 13, so as to drive the rotating piece 16 and the parking stop 13 to rotate by the reciprocating extension and retraction of the electric telescopic rod, and realize the parking stop 13 to be arranged at an inclination angle with the ground or to be flush with the ground.

[0032] In a specific embodiment, a transmitting end control box 18 embedded in the ground is arranged on one side of the mounting box 12, the transmitting end control box 18 is provided with a control mechanism electrically connected to the electric cylinder, the parking stop 13 is provided with a two-dimensional code 11 for user scanning and identification, and the two-dimensional code 11 is matched with a background cloud identification mechanism electrically connected to the control mechanism. When the vehicle to be charged enters, the two-dimensional code 11 is scanned, the background cloud identification mechanism is identified, and a signal of allowing parking and charging is sent to the control mechanism, the control mechanism controls the electric cylinder to start, the parking stop is driven to rotate around the hinged support 15, the vehicle drives into the parking stop 13 after the parking stop is rotated to a position parallel to the ground, the transmitting coil 4 is powered on to be coupled with the receiving coil of the vehicle to be charged, and the charging process starts.

[0033] In a specific embodiment, the parking stop 13 is provided with a magnetic sensor 10 for identifying the parking position of the vehicle to be charged. The magnetic sensor 10 is used to generate a magnetic field with the sensor matched with the receiving coil of the vehicle to be charged, and after the connection is completed, it is indicated that the parking position of the vehicle to be charged is correct, and then a signal that the vehicle can be charged is given, and the charging process starts.

[0034] According to the actual needs, the adaptive changes are within the protection scope of the utility model.

[0035] It should be noted that for those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A wireless charging transmitter device, characterized by, The application relates to a transmitting end body in a cavity structure, wherein a magnetic isolation cavity is arranged inside the transmitting end body, a first ferrite magnetic isolation sheet and a transmitting coil are arranged on the periphery of the magnetic isolation cavity, the magnetic isolation cavity is arranged on the inner bottom wall of the transmitting end body, a resonance capacitor assembly and two compensation inductors are arranged inside the magnetic isolation cavity, the two compensation inductors are symmetrically arranged on the two sides of the resonance capacitor assembly, the bottom of the first ferrite magnetic isolation sheet is attached to the inner bottom wall of the transmitting end body, the top of the first ferrite magnetic isolation sheet is covered with an insulating paint layer, and the transmitting coil is arranged above the insulating paint layer. 2.The wireless charging transmitter device of claim 1, wherein, A sunken area is arranged on the inner bottom wall of the transmitting end body, and a magnetic isolation assembly is arranged on the sunken area; and the sunken area and the magnetic isolation assembly form the magnetic isolation cavity. 3.The wireless charging transmitter device of claim 2, wherein, The magnetic isolation assembly comprises a second ferrite magnetic isolation sheet in a ring structure, the outer periphery of the second ferrite magnetic isolation sheet is attached to the inner circumferential wall of the sunken area, the top end of the second ferrite magnetic isolation sheet extends out of the sunken area, and the top of the second ferrite magnetic isolation sheet is covered with a third ferrite magnetic isolation sheet. 4.The wireless charging transmitter device of claim 2 or 3, wherein, The sunken area is arranged at the central position of the inner bottom wall of the transmitting end body. 5.The wireless charging transmitter device of claim 4, wherein, The positions, where the magnetic isolation cavity, the first ferrite magnetic isolation sheet and the transmitting coil are not arranged, in the transmitting end body are filled with insulating heat-conducting glue. 6.The wireless charging transmitter device of claim 5, wherein, A heat dissipation grille is arranged on the outer bottom wall of the transmitting end body.

7. A parking system applying the wireless charging transmitter device according to any one of claims 1 to 6, characterized in that, The application relates to a mounting box embedded in the ground, a hinged support is arranged above the mounting box, a rotating piece is rotatably arranged on the hinged support, one end of the rotating piece is arranged outside the mounting box and connected with a parking stall, the parking stall is arranged with a wireless charging transmitting end device, the other end of the rotating piece is arranged inside the mounting box and connected with a driving mechanism for driving the rotating piece to rotate, the parking stall can be arranged horizontally with the ground or at an angle with the ground by rotating with the rotating piece, and an opening is arranged on the top surface of the mounting box for the rotating piece to move.

8. The parking system according to claim 7, characterized in that The driving mechanism is an electric cylinder, the cylinder body of the electric cylinder is rotatably connected with the side wall of the mounting box, the telescopic rod of the electric cylinder horizontally extends, and the extending end of the telescopic rod is rotatably connected with one end of the rotating piece which is not connected with the parking stall.

9. The parking system according to claim 8, characterized in that One side of the mounting box is provided with a transmitting end control box embedded in the ground, the transmitting end control box is arranged with a control mechanism electrically connected with the electric cylinder, the parking stall is arranged with a two-dimensional code for a user to scan and identify, and the two-dimensional code is matched with a background cloud identification mechanism electrically connected with the control mechanism.

10. The parking system according to claim 9, characterized in that The parking stall is arranged with a magnetic inductor for identifying the parking position of a vehicle to be charged.

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