Magnetic field orientation device of wireless power supply magnetic coupling mechanism

Abstract

The utility model discloses a magnetic field orientation device of a wireless power supply magnetic coupling mechanism, which belongs to the field of charging and comprises a wireless power supply device buried underground. Compared with the prior art, the utility model has the advantages that the sealing cover of the metal shell is designed to be the ladder-shaped polycarbonate partition plate with the net-shaped structure formed by the plurality of pressure-resistant strips, and through the net-shaped grooves, the air permeability is ensured while the pressure resistance is ensured; then, the TPU waterproof breathable film and the breathable plastic track plate are sequentially adhered to the upper portion of the stepped polycarbonate partition plate, the TPU waterproof breathable film ensures that external water mist cannot enter the metal shell, the breathability is not affected while the waterproof performance of the wireless power supply device is ensured, and the TPU waterproof breathable film is protected through the breathable plastic track plate and is prevented from being scratched.

Description

Technical Field

[0001] This utility model relates to the field of charging, specifically to a magnetic field orientation device for a wireless electromagnetic coupling mechanism. Background Technology

[0002] With the development of energy recycling, domestic gasoline vehicles are gradually shifting towards electric vehicles. However, electric vehicles require batteries to be charged via data cables. With repeated plugging and unplugging of the charging interface, fatigue wear inevitably occurs, leading to charging failures or spontaneous combustion of the charging interface. To address this, wireless power supply systems have been designed based on the principle of electromagnetic coupling. These systems use a wireless power supply buried underground and a receiver inside the vehicle for contactless charging. To reduce the impact of electromagnetic waves on nearby devices, a magnetic field orientation device for the wireless electromagnetic coupling mechanism is needed to limit the direction of electromagnetic induction radiation.

[0003] The existing magnetic field orientation device of the wireless electromagnetic coupling mechanism mainly provides high-frequency electromagnetic waves of the corresponding frequency through the coil assembly in the wireless power supply. In order to limit the divergence of electromagnetic waves, the coil assembly is placed in a single open metal shell. In order to reduce the damage to the metal shell when subjected to strong compressive force, conductive rubber is covered on the outer wall of the metal shell. While maintaining good elasticity, the conductive rubber can effectively control the divergence of electromagnetic waves, thereby preventing the metal shell from being deformed when run over by a wheel.

[0004] To prevent rainwater, dust, and other debris from entering the metal casing, a sealing cap is usually installed at the opening of the metal casing. To ensure pressure resistance and sealing ability, the sealing cap is usually made of a non-porous sealing material that does not isolate electromagnetic waves. Once the sealing cap is installed and the heat generated by the electromagnetic waves accumulates in the metal casing, the coil resistance increases due to high temperature, and thus affects the electromagnetic induction line strength of the coil assembly. Utility Model Content

[0005] The technical problem this invention aims to solve is that the existing magnetic field orientation device for wireless electromagnetic coupling mechanisms has poor heat dissipation and heat tends to accumulate quickly.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a magnetic field orientation device for a wireless electromagnetic coupling mechanism, comprising a wireless power supply buried underground, the wireless power supply comprising a coil assembly for providing electromagnetic induction lines, a metal shell for limiting the emission direction of electromagnetic induction lines, and conductive rubber sleeved on the outer wall of the metal shell, the metal shell having a single open structure, a stepped polycarbonate partition provided on the open top surface of the metal shell, the interior of the stepped polycarbonate partition having several pressure-resistant strips spliced ​​into a grid pattern, and a TPU waterproof and breathable membrane and a breathable plastic running track slab sequentially adhered to the outer wall of the stepped polycarbonate partition.

[0007] As an improvement, both the TPU waterproof and breathable membrane and the breathable plastic running track slab are located above the ground plane, while the sidewalls of the metal shell are located below the ground plane.

[0008] As an improvement, the coil assembly includes a solenoid coil, stepped support blocks sleeved on both sides of the solenoid coil, and a protective housing that is snapped onto the thin column end of the stepped support block. The protective housing is connected to the thin column end of the stepped support block through a snap-fit ​​structure.

[0009] As an improvement, an L-shaped fixing plate is welded to the bottom surface of the thick column end of the stepped support block, and the L-shaped fixing plate is connected to the bottom surface of the metal shell by a bolt structure.

[0010] As an improvement, a current control plate is provided on one side of the inner wall of the metal housing to limit the power of the coil assembly, and the current control plate is connected to the inner wall of the metal housing through a thermally conductive silicone pad.

[0011] As an improvement, the metal casing is made of aluminum alloy.

[0012] The advantages of this invention compared to existing technologies are as follows: The sealing cover of the metal shell is designed as a stepped polycarbonate partition with a mesh structure composed of multiple pressure-resistant strips. Through these mesh grooves, both pressure resistance and breathability are ensured. Then, a TPU waterproof and breathable membrane and a breathable plastic running track board are sequentially attached above the stepped polycarbonate partition. The TPU waterproof and breathable membrane ensures that external water mist will not enter the metal shell, ensuring the waterproof performance of the wireless power supply without affecting breathability. The breathable plastic running track board further protects the TPU waterproof and breathable membrane from being scratched. Attached Figure Description

[0013] Figure 1 This is a general structural diagram of a magnetic field orientation device for a wireless electromagnetic coupling mechanism according to this utility model.

[0014] Figure 2 This is an exploded view of the overall structure of a magnetic field orientation device for a wireless electromagnetic coupling mechanism according to this utility model.

[0015] Figure 3 This is a front sectional view of the overall structure of a magnetic field orientation device for a wireless electromagnetic coupling mechanism according to this utility model.

[0016] Figure 4 This is a side sectional view of the overall structure of a magnetic field orientation device for a wireless electromagnetic coupling mechanism according to this utility model.

[0017] Figure 5 This is an exploded view of the coil assembly of a magnetic field orientation device for a wireless electromagnetic coupling mechanism according to this utility model.

[0018] As shown in the figure: 1. Wireless power supply; 11. Coil assembly; 111. Solenoid coil; 112. Stepped support block; 113. Protective shell; 114. L-shaped fixing plate; 12. Metal shell; 13. Conductive rubber; 2. Stepped polycarbonate partition; 21. Pressure-resistant strip; 3. TPU waterproof and breathable membrane; 4. Breathable plastic running track board. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] As per the instruction manual Figure 1 , 2 As shown in Figure 4, a wireless power supply 1 buried underground is included. The wireless power supply 1 includes a coil assembly 11 that provides electromagnetic induction lines, a metal shell 12 that limits the direction of electromagnetic induction line emission, and a conductive rubber 13 fitted on the outer wall of the metal shell 12. To facilitate the transmission of unidirectional electromagnetic waves, the metal shell 12 has a single open structure. The conductive rubber 13 has high elasticity while shielding electromagnetic waves, which can effectively prevent the metal shell 12 from deforming under heavy pressure. To ensure the oxidation resistance of the metal shell 12, the metal shell 12 is made of aluminum alloy. To facilitate the control of the power and frequency of the coil assembly 11, a current control plate 14 that limits the power of the coil assembly 11 is provided on one side of the inner wall of the metal shell 12. The current control plate 14 is connected to the inner wall of the metal shell 12 through a thermally conductive silicone pad to ensure the heat dissipation performance of the current control plate 14.

[0021] To ensure heat dissipation at the open end of the metal casing 12, a stepped polycarbonate partition 2 is provided on the open end of the top surface of the metal casing 12. The stepped polycarbonate partition 2 has several pressure-resistant strips 21 arranged in a grid pattern inside. This grid of pressure-resistant strips 21 ensures good air permeability while maintaining overall pressure resistance. Designing the stepped polycarbonate partition 2 as stepped effectively prevents it from collapsing under pressure. To ensure the heat dissipation of the stepped polycarbonate partition... The waterproof and abrasion-resistant properties of board 2; the outer wall of the stepped polycarbonate partition 2 is sequentially bonded with a TPU waterproof and breathable membrane 3 and a breathable plastic track board 4, usually using waterproof adhesive for bonding. For a firmer connection, multiple screws can be used for fixation. The breathable plastic track board 4 uses a breathable plastic track material with high abrasion resistance, anti-slip properties, and high breathability, and is commonly used on school tracks; the TPU waterproof and breathable membrane 3 has breathable and waterproof properties, as well as abrasion resistance, tear resistance, and aging resistance, giving it a long service life.

[0022] To prevent water from accumulating above the breathable plastic track slab 4 at the location of the wireless power supply 1, both the TPU waterproof and breathable membrane 3 and the breathable plastic track slab 4 are located above the ground plane, while the sidewall of the metal shell 12 is located below the ground plane. The conductive rubber 13 can effectively prevent the ground from corroding the metal shell 12.

[0023] As per the instruction manual Figure 2 , 3 As shown in Figures 4 and 5, in order to maximize the utilization of electromagnetic induction lines, the coil assembly 11 includes a solenoid coil 111, stepped support blocks 112 sleeved on both sides of the solenoid coil 111, and a protective housing 113 clamped to the thin column end of the stepped support block 112. In order to ensure the stability of the connection between the stepped support block 112 and the protective housing 113, the protective housing 113 is connected to the thin column end of the stepped support block 112 through a snap-fit ​​structure.

[0024] To ensure the overall connection stability between the coil assembly 11 and the metal housing 12, an L-shaped fixing plate 114 is welded to the bottom surface of the thick column end of the stepped support block 112, and the L-shaped fixing plate 114 is connected to the bottom surface of the metal housing 12 by bolts. Both the L-shaped fixing plate 114 and the stepped support block 112 are made of insulating materials. During installation, the power transmission wire connecting the solenoid coil 111 and the current control plate 14 passes through the metal housing 12 and the conductive rubber 13 and is buried in the underground pipeline.

[0025] In a specific implementation of this invention, the electric vehicle is driven above the wireless power supply 1, so that the receiver of the electric vehicle is located directly above the wireless power supply 1. After payment, the solenoid coil 111 is activated, and the solenoid coil 111 generates corresponding high-frequency unidirectional magnetic lines of force on the receiver. The input current is high-frequency alternating current. Under the continuous change of the magnetic lines of force, the receiver generates a corresponding current. After being converted by the DC-DC converter in the vehicle, this current inputs AC power of rated power to the battery, thereby completing the wireless charging of the electric vehicle.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A magnetic field orientation device of a wireless power supply magnetic coupling mechanism, comprising a wireless power supply (1) buried in the ground, the wireless power supply (1) comprising a coil assembly (11) providing an electromagnetic induction line, a metal shell (12) limiting the emission direction of the electromagnetic induction line, and a conductive rubber (13) sleeved on the outer wall end of the metal shell (12), the metal shell (12) is a single open structure, characterized in that: The metal shell (12) has a stepped polycarbonate partition (2) on the open top surface. The stepped polycarbonate partition (2) has several anti-compression strips (21) spliced ​​into a grid pattern inside. The outer wall of the stepped polycarbonate partition (2) is successively attached with a TPU waterproof and breathable membrane (3) and a breathable plastic track board (4).

2. A magnetic field orientation device for a wireless power supply magnetic coupling mechanism according to claim 1, characterized in that: The TPU waterproof and breathable membrane (3) and the breathable plastic track board (4) are both located above the ground plane, and the side wall of the metal shell (12) is located below the ground plane.

3. A magnetic field orientation device for a wireless power supply magnetic coupling mechanism according to claim 1, characterized in that: The coil assembly (11) includes a solenoid coil (111), a stepped support block (112) sleeved on both sides of the solenoid coil (111), and a protective shell (113) clipped to the thin column end of the stepped support block (112). The protective shell (113) is connected to the thin column end of the stepped support block (112) through a snap-fit ​​structure.

4. A magnetic field orientation device for a wireless power supply magnetic coupling mechanism according to claim 3, characterized in that: An L-shaped fixing plate (114) is welded to the bottom surface of the thick column end of the stepped support block (112), and the L-shaped fixing plate (114) is connected to the bottom surface of the metal shell (12) by bolt structure.

5. A magnetic field orientation device for a wireless power supply magnetic coupling mechanism according to claim 3, characterized in that: The inner wall of the metal housing (12) is provided with a current control plate (14) to limit the power of the coil assembly (11), and the current control plate (14) is connected to the inner wall of the metal housing (12) through a thermal grease pad.

6. A magnetic field orientation device for a wireless power supply magnetic coupling mechanism according to claim 1, characterized in that: The metal casing (12) is made of aluminum alloy.

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