Wireless power supply module based on automobile glass and control method thereof

Abstract

The invention relates to a wireless power supply module based on automobile glass and a control method of the wireless power supply module. The wireless power supply module comprises a glass substrate arranged on an automobile, a wireless transmitting end located on the inner side of the glass substrate, a wireless receiving end located on the outer side of the glass substrate and a light source module connected with the wireless receiving end. The wireless transmitting end comprises a PC + ABS shell, a transmitting end ferrite located in the PC + ABS shell, a wireless transmitting coupling coil, a PCB power supply board, a power supply chip assembly and a wire harness, and the wireless receiving end and the light source module are integrally formed in a PUR injection molding mask. The wireless receiving end comprises a wireless receiving chip assembly and an electromagnetic induction receiving end consisting of a receiving end ferrite and a wireless receiving coupling coil wound on the receiving end ferrite; the wireless charging system has the advantages that the wireless charging module and the automobile glass are integrated, the light-emitting automobile logo is lightened through the low-power mini LED lamp set, stable positioning is achieved while high efficiency and low heat are guaranteed, and the power supply stability and the user experience are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of automotive exterior lighting technology, and in particular to a wireless power supply module based on automotive glass and its control method. Background Technology

[0002] Traditional illuminated car emblems typically rely on physical drilling into exterior trim pieces (such as the emblem or logo area) to run wires and connect to the vehicle's power system for power. However, this method has significant drawbacks in practical applications: the drilling operation not only compromises the structural integrity and sealing performance of the exterior trim (leading to reliability issues such as water leakage and corrosion), but also severely affects the aesthetics and design consistency of the overall vehicle appearance. These drawbacks are particularly pronounced in high-end models with their refined exterior design requirements.

[0003] To address the aforementioned issues, wireless charging can currently power illuminated exterior components. However, traditional wireless charging technologies often employ fixed base designs, which are easily limited by the interior space layout of the vehicle. Furthermore, the metal bases can cause poor heat dissipation, leading to overheating of the devices with prolonged use. Additionally, conventional solutions lack consideration for adaptability to curved glass surfaces, often resulting in users' phones sliding off-center and charging interruptions when placed on the surface. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide a wireless power supply module and its control method based on automotive glass, which integrates the wireless charging module with automotive glass and uses low-power miniLED light groups to illuminate the car logo. While ensuring high efficiency and low heat, it achieves stable positioning, effectively improving power supply stability and user experience, thereby overcoming the shortcomings of the prior art.

[0005] The present invention provides a wireless power supply module based on automotive glass, comprising: a glass substrate disposed on an automotive vehicle, a wireless transmitter located inside the glass substrate, a wireless receiver located outside the glass substrate, and a light source module connected to the wireless receiver.

[0006] The wireless transmitter includes: a PC+ABS housing (a blend of polycarbonate and acrylonitrile-butadiene-styrene copolymer), a transmitter ferrite located inside the PC+ABS housing, a wireless transmission coupling coil, a PCB power supply board, a JW7951C power supply chip assembly, and a wiring harness. The electromagnetic induction transmitter, consisting of the transmitter ferrite and the wireless transmission coupling coil wound on the transmitter ferrite, is located at the upper end of the PC+ABS housing. The wireless transmission control assembly, consisting of the PCB power supply board and the power supply chip assembly, is located at the lower end of the PC+ABS housing. The electromagnetic induction transmitter and the wireless transmission control assembly are sealed inside the PC+ABS housing with adhesive. The PCB power supply board is electrically connected to the wireless transmission coil via the wiring harness. The power supply chip assembly is electrically connected to the vehicle body power supply via the wiring harness. The PC+ABS housing is fixed to the inside of the glass substrate with 3M adhesive.

[0007] The wireless receiver and the light source module are integrally molded within a PUR (polyurethane) injection-molded mask. The wireless receiver includes a wireless receiver chip assembly and an electromagnetic induction receiver consisting of a receiver ferrite and a wireless receiver coupling coil wound around the receiver ferrite. The electromagnetic induction receiver and the wireless receiver chip assembly are soldered to the back of the light source circuit board of the light source module by high-temperature soldering, so that the electronic components of the wireless receiver and the light source module share the same circuit board. A PVD (physical vapor deposition) film is disposed inside the PUR injection-molded mask to surround the wireless receiver and the light source module. The wireless receiver and the light source module are sealed inside the PUR injection-molded mask by potting glue. The PUR injection-molded mask is fixed to the outside of the glass substrate by 3M adhesive.

[0008] As a preferred embodiment of the present invention, the PCB power supply board uses FR-4 (fiberglass cloth + epoxy resin) material with a thickness of 0.4mm as the substrate of the transmitter board, the power supply chip assembly 1 uses a power supply chip of model JW7951C manufactured by JOULWATT, and the PCB power supply board integrates an electromagnetic filtering module that is electrically connected to the power supply chip assembly. The electromagnetic filtering module is connected to the GND network and is used to suppress the noise of the wireless transmitting coil and the wireless receiving coupling coil.

[0009] As a preferred embodiment of the present invention, both the wireless transmitting coupling coil and the wireless receiving coupling coil are wound with 0.1-0.15mm fine wire using high-temperature self-adhesive technology and shaped by hot air at 200℃. The total thickness of the three layers of fine wire is equal to 0.3mm, wherein the winding coil is 0.3mm + ferrite is 0.3mm + double-sided adhesive is 0.15mm, and the total thickness is approximately 0.8mm.

[0010] As a preferred embodiment of the present invention, the glass substrate is a double-layer laminated glass or a single-layer glass.

[0011] As a preferred embodiment of the present invention, the receiving ferrite is A-shaped, and the wireless receiving coupling coil is wound around the A-shaped receiving ferrite.

[0012] As a preferred embodiment of the present invention, the parameter calculation steps for the wireless transmitting coupling coil and the wireless receiving coupling coil are as follows:

[0013] Step S1: When the LC resonant frequencies of the wireless transmitting coupling coil and the wireless receiving coupling coil are consistent:

[0014]

[0015] If L p ≠L s Then by adjusting C p C s Compensation is performed to ensure that the resonant frequencies are consistent;

[0016] If L p With L s When they are not equal, the following conditions must be met:

[0017] L p ·C p =L s ·C s ;

[0018] In the formula, f0 represents the resonant frequency, which is the operating frequency at which the circuit resonates, and L... p Indicates parallel inductance, referring to the inductance of the inductor element in a parallel resonant circuit, C. p Indicates parallel capacitance, referring to the capacitance of the capacitor element in a parallel resonant circuit, L s C represents the inductance of a series resonant circuit, specifically the inductance of the inductor element. s This indicates a series capacitor, referring to the capacitance of a capacitor element in a series resonant circuit.

[0019] Step S2: Coupling coefficient:

[0020]

[0021] In the formula, k represents the coupling coefficient, and M represents the mutual inductance;

[0022] Methods to increase the k value include increasing the coil area, decreasing the spacing, increasing the number of turns, and using a ferrite core.

[0023] Step S3: The inductance values ​​of the wireless transmitting coupling coil and the wireless receiving coupling coil do not need to be equal, but they must be matched by LC matching to ensure consistent resonant frequencies. The inductance L should be selected according to the voltage requirements. s :L p The ratio (commonly 1:1 or 2:1) ultimately achieves impedance matching and high-efficiency transmission.

[0024] As a preferred embodiment of the present invention, the manufacturing steps of the light source module are as follows:

[0025] Step S1: Fabrication of Mini LED flexible light strip. The blue light chip is transferred to a flexible substrate for die bonding. An optical sealing layer made of transparent epoxy resin is used to seal and fix the blue light chip on the flexible substrate. The flexible substrate is a flexible circuit board. The optical sealing layer is used to protect the blue light chip. A diffusing agent is added to the transparent epoxy resin material of the optical sealing layer. The diffusing agent is used to make the light emitted by the blue light chip more uniform.

[0026] Step S2: Fabrication of the PC film. Dots are printed on the lower surface of a PC film with a thickness of 0.5mm or more, or dots are formed by carbon dioxide laser. This allows the light from the Mini LED flexible light strip to enter from the side, be conducted within the PC film, and have total internal reflection destroyed by the dots to form a uniform surface light source. A layer of adhesive film containing yellow phosphor is attached to the PC film. The blue LED chip excites the yellow phosphor to form white light, thereby improving the light conversion efficiency and reducing energy loss.

[0027] Step S3: Install the Mini LED flexible light strip on the side of the PC film and place a high reflectivity reflector under the PC film; thereby realizing the use of the Mini LED flexible light strip to emit light and enter the PC film with dots from the side. The dots destroy the light and form total internal reflection in the PC film, so that the light enters the backlight cavity through the upper surface of the PC film to form a surface light source.

[0028] Another objective of this invention is to provide a control method for a wireless power supply module based on automotive glass. When the vehicle is started, the wireless transmitter receives power synchronously with the vehicle position lights and sends signals to the power supply chip assembly. The power supply chip assembly activates a high-frequency inverter circuit, which generates a high-frequency alternating magnetic field at the position of the wireless transmitting coupling coil. The wireless receiving coupling coil of the wireless receiver on the outside of the glass substrate senses the change in the magnetic field and generates current through electromagnetic induction. After rectification, the current supplies power to the lighting module. The power supply chip monitors the power supply status and temperature in real time and adjusts the output power through the PWM adjustment module integrated on the PCB power supply board.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. This invention innovatively integrates a wireless charging module with automotive glass and uses low-power miniLED light groups to illuminate the car logo. While ensuring high efficiency and low heat generation, it achieves stable positioning, effectively improving power supply stability and user experience. It also solves the problems of existing in-vehicle wireless charging devices, such as large space occupation, limited installation location, need for physical drilling of sheet metal for wiring, and impact on overall aesthetics.

[0031] 2. This invention integrates the wireless power supply transmitter, receiver, and glass into a complete product design. The overall thickness of the transmitter is no more than 4.2mm, and the overall thickness of the receiver is no more than 2.0mm, resulting in higher space utilization.

[0032] 3. This invention uses a specially customized conformal receiving coil. The ferrite is made according to the shape of the letter 'a'. The ferrite is hollowed out in the middle of the letter 'a'. The coil size is restricted by the outer edge size of the letter 'a' when the enameled wire is wound. The inner diameter is restricted by the inner edge size of the letter 'a' when the enameled wire is wound. The overall thickness of the receiving coil does not exceed 1mm (i.e., ferrite + enameled wire), which ensures power supply efficiency without affecting the overall light emission effect.

[0033] 4. The light source module of the present invention achieves ultra-thinness of the optical system and improved light emission uniformity through the synergistic design of side-lit MiniLED light strips and dot diffusion structure, while optimizing light energy utilization to reduce power consumption.

[0034] 5. The light source module of this invention uses a PC film instead of a rigid light guide plate, and the overall thickness can be made as thin as about 5mm, realizing the ultra-thin design of automotive interior and exterior lighting structures.

[0035] 6. The PC film of the present invention has a certain degree of flexibility, and the overall structure is better adapted to the curves of the car body.

[0036] 7. The transmitter end of this invention is waterproofed by ultrasonic welding or potting to achieve IP67 waterproof rating. The receiver end coil design is based on the actual space available for the coil placement in the product, and a custom-designed coil that meets the power supply requirements is used as the receiver coil.

[0037] 8. The receiver of the present invention is combined with the light source module. The electronic components of the receiver are soldered onto the FPC on the back of the lamp assembly using flexible circuit board technology, forming an integrated product of the lamp assembly and the receiver.

[0038] 9. This invention achieves a perfect integration of wireless power supply function with automotive glass, which not only maintains the cleanliness and aesthetics of the vehicle interior space, but also improves the convenience and safety of power supply, making it particularly suitable for new energy vehicles and high-end intelligent connected vehicles. Attached Figure Description

[0039] Figure 1 This is a structural framework diagram of this embodiment.

[0040] Figure 2 This is a schematic diagram showing the installation of the glass substrate, wireless receiver, and light source module in this embodiment.

[0041] Figure 3 This is a schematic diagram of the installation of the wireless transmitter and the glass substrate in this embodiment.

[0042] Figure 4 This is a schematic diagram of the overall structure of the light source module in this embodiment.

[0043] Figure 5 This is a schematic diagram of the PC film in this embodiment using a printed halftone dot pattern.

[0044] Figure 6 This is a schematic diagram of the PC film in this embodiment using laser dotting.

[0045] Figure 7 This is a schematic diagram of the Mini LED flexible light strip in this embodiment.

[0046] Reference numerals: Glass substrate 1, PC+ABS shell 101, transmitter ferrite 102, wireless transmission coupling coil 103, PCB power supply board 104, power supply chip assembly 105, wire harness 106, 3M adhesive 107, encapsulating adhesive 108, wireless transmitter 2, wireless receiver 3, wireless receiver chip assembly 301, electromagnetic induction receiver 302, light source module 4, Mini LED flexible light strip 401, blue light chip 402, flexible substrate 403, optical sealing layer 404, PC film 405, adhesive film 406, reflective sheet 407, PUR injection molded mask 5, PVD film 6. Detailed Implementation

[0047] See Figure 1-3As shown, this embodiment provides a wireless power supply module based on automotive glass, including: a glass substrate 1 disposed on the vehicle, a wireless transmitter 2 located inside the glass substrate 1, a wireless receiver 3 located outside the glass substrate 1, and a light source module 4 connected to the wireless receiver; the wireless transmitter 2 includes: a PC+ABS shell (a blend of polycarbonate and acrylonitrile-butadiene-styrene copolymer) 101, a transmitter ferrite 102 located inside the PC+ABS shell 101, a wireless transmission coupling coil 103, a PCB power supply board 104, and a JW7951C power supply chipset. The electromagnetic induction transmitter, consisting of component 105 and wiring harness 106, and the transmitter ferrite 102 and the wireless transmission coupling coil 103 wound around the transmitter ferrite 102, is located at the upper end of the PC+ABS housing 101. The wireless transmission control component, consisting of PCB power supply board 104 and power supply chip assembly 105, is located at the lower end of the PC+ABS housing 101. The electromagnetic induction transmitter and the wireless transmission control component are sealed with adhesive inside the PC+ABS housing 101. The PCB power supply board 104 is electrically connected to the wireless transmission coil 103 via wiring harness 106, and the power supply chip assembly 105 is connected to the wireless transmission coil 103 via wiring harness 106. The wiring harness 106 is electrically connected to the vehicle body power supply. The PC+ABS housing 101 is fixed to the inner side of the glass substrate 1 with 3M adhesive 107. The power supply chip assembly 105 integrates one or more of the following: a rectifier bridge (silicon rectifier diode / bridge rectifier chip), filter capacitors (electrolytic capacitors, ceramic capacitors), common-mode inductors / differential-mode inductors, a DC-DC chip (Buck / Boost converter), a fuse / resetting fuse, and a power switching transistor. The power supply chip assembly 105 also has a built-in main control chip (MCU / dedicated wireless charging control IC), a communication demodulation chip / circuit, and a crystal oscillator (quartz crystal). The wireless receiver 3 and the light source module 4 are integrally formed in a PUR (polyurethane) injection molded mask 5. The wireless receiver 3 includes: a wireless receiver chip assembly 301, and an electromagnetic induction receiver 302 composed of a receiver ferrite and a wireless receiver coupling coil wound on the receiver ferrite.The electromagnetic induction receiver 302 and the wireless receiver chip 301 are soldered to the back of the light source circuit board of the light source module 4 using a high-temperature soldering method. The light source circuit board uses a flexible substrate 403, allowing the electronic components of the wireless receiver 3 and the light source module 4 to share the same circuit board. A PVD (physical vapor deposition) film 6 surrounding the wireless receiver 3 and the light source module 4 is disposed inside the PUR injection molded cover 5. The wireless receiver and the light source module 4 are sealed inside the PUR injection molded cover 5 by encapsulating glue (in potting form) 108. The PUR injection molded cover 5 is fixed to the outside of the glass substrate 1 by 3M adhesive 107.

[0048] Furthermore, in this embodiment, the PCB power supply board uses 0.4mm thick FR-4 (fiberglass cloth + epoxy resin) material as the substrate of the PCB power supply board 104, and the power supply chip assembly 105 uses a power supply chip of model JW7951C manufactured by JOULWATT. The PCB power supply board 104 integrates an electromagnetic filtering module that is electrically connected to the power supply chip assembly 105. The electromagnetic filtering module is connected to the GND network (ground) and is used to suppress the noise of the wireless transmitting coil and the wireless receiving coupling coil.

[0049] Furthermore, in this embodiment, both the wireless transmitting coupling coil 103 and the wireless receiving coupling coil are wound with 0.1-0.15mm fine wire using high-temperature self-adhesive technology and shaped with hot air at 200℃. The total thickness of the three layers of fine wire winding is equal to 0.3mm, of which the winding coil is 0.3mm + ferrite is 0.3mm + double-sided adhesive is 0.15mm, and the total thickness is ≈0.8mm.

[0050] Furthermore, in this embodiment, the glass substrate 1 is a double-layer laminated glass or a single-layer glass.

[0051] Furthermore, in this embodiment, the receiver ferrite is A-shaped, and the wireless receiving coupling coil is wound around the A-shaped receiver ferrite.

[0052] Furthermore, the parameter calculation steps for the wireless transmitting coupling coil 103 and the wireless receiving coupling coil in this embodiment are as follows:

[0053] Step S1: When the LC resonant frequencies of the wireless transmitting coupling coil and the wireless receiving coupling coil are consistent:

[0054]

[0055] If L p ≠L s Then by adjusting C p C s Compensation is performed to ensure that the resonant frequencies are consistent;

[0056] If L p With L sWhen they are not equal, the following conditions must be met:

[0057] L p ·C p =L s ·C s ;

[0058] In the formula, f0 represents the resonant frequency, which is the operating frequency at which the circuit resonates, and L... p Indicates parallel inductance, referring to the inductance of the inductor element in a parallel resonant circuit, C. p Indicates parallel capacitance, referring to the capacitance of the capacitor element in a parallel resonant circuit, L s C represents the inductance of a series resonant circuit, specifically the inductance of the inductor element. s This indicates a series capacitor, referring to the capacitance of a capacitor element in a series resonant circuit.

[0059] Step S2: Coupling coefficient:

[0060]

[0061] In the formula, k represents the coupling coefficient, and M represents the mutual inductance;

[0062] Methods to increase the k value include increasing the coil area, decreasing the spacing, increasing the number of turns, and using a ferrite core.

[0063] Step S3: The inductance values ​​of the wireless transmitting coupling coil and the wireless receiving coupling coil do not need to be equal, but they must be matched by LC matching to ensure consistent resonant frequencies. The inductance L should be selected according to the voltage requirements. s :L p The ratio (commonly 1:1 or 2:1) ultimately achieves impedance matching and high-efficiency transmission.

[0064] See Figure 4-7 As shown, the manufacturing steps of the light source module in this embodiment are as follows:

[0065] Step S1: Fabrication of the Mini LED flexible light strip 401 of the light source module. The blue light chip (blue light LED chip) 101 is transferred to the flexible substrate 403 for die bonding. The blue light chip 402 is sealed and fixed on the flexible substrate 403 using an optical sealing layer 404 made of transparent epoxy resin. The flexible substrate 403 is a flexible circuit board. The optical sealing layer 404 is used to protect the blue light chip 402. A diffusing agent is added to the transparent epoxy resin material of the optical sealing layer 404. The diffusing agent is used to make the light emitted by the blue light chip 402 more uniform.

[0066] Step S2: Fabrication of PC (polycarbonate) film 2. Dots are printed on the lower surface of a 0.5mm thick PC film 405 or formed by carbon dioxide laser dotting. Light from the Mini LED flexible light strip 401 enters from the side, is conducted within the PC film 405, and total internal reflection is disrupted by the dot pattern to form a uniform surface light source. A layer of adhesive film 406 containing yellow phosphor is attached to the PC film 405. Blue LED chip 402 excites the yellow phosphor to form white light, thereby improving light conversion efficiency and reducing energy loss.

[0067] Step S3: The Mini LED flexible light strip 401 is installed on the side of the PC film 405, and a high-reflectivity reflective sheet 407 is placed below the PC film 405. This allows the Mini LED flexible light strip 401 to emit light that enters the dotted PC film 405 from the side. The dotted surface disrupts the light, causing total internal reflection within the PC film 405, allowing the light to enter the backlight cavity through the upper surface of the PC film 405, forming a surface light source. The Mini LED flexible light strip 401 adopts a flip-chip structure, meaning the electrodes of the Mini LED flexible light strip 401 are located at the bottom of the flexible circuit board.

[0068] Example 2

[0069] This embodiment provides a control method for a wireless power supply module based on automotive glass. When the vehicle is started, the wireless transmitter 2 receives power synchronously with the vehicle position lights and sends a signal to the power supply chip assembly 105. The power supply chip assembly 105 starts the high-frequency inverter circuit, which generates a high-frequency alternating magnetic field at the position of the wireless transmitting coupling coil 103. The wireless receiving coupling coil of the wireless receiver 2 on the outside of the glass substrate 1 senses the change in magnetic field and generates current through electromagnetic induction. After rectification, it supplies power to the lighting module. The power supply chip monitors the power supply status and temperature in real time and adjusts the output power through the PWM adjustment module integrated on the PCB power supply board 104.

[0070] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wireless power supply module based on automotive glass, characterized in that, include: A glass substrate installed on a car, a wireless transmitter located inside the glass substrate, a wireless receiver located outside the glass substrate, and a light source module connected to the wireless receiver. The wireless transmitter includes: a PC+ABS housing, a transmitter ferrite located inside the PC+ABS housing, a wireless transmission coupling coil, a PCB power supply board, a power supply chip assembly, and a wiring harness. The electromagnetic induction transmitter, consisting of the transmitter ferrite and the wireless transmission coupling coil wound on the transmitter ferrite, is located at the upper end of the PC+ABS housing. The wireless transmission control assembly, consisting of the PCB power supply board and the power supply chip assembly, is located at the lower end of the PC+ABS housing. The electromagnetic induction transmitter and the wireless transmission control assembly are sealed in the PC+ABS housing with adhesive. The PCB power supply board is electrically connected to the wireless transmission coil via the wiring harness. The power supply chip assembly is electrically connected to the vehicle body power supply via the wiring harness. The PC+ABS housing is fixed to the inner side of the glass substrate with 3M adhesive. The wireless receiver and the light source module are integrally molded within a PUR injection-molded mask. The wireless receiver includes a wireless receiver chip assembly and an electromagnetic induction receiver consisting of a receiver ferrite and a wireless receiver coupling coil wound around the receiver ferrite. The electromagnetic induction receiver and the wireless receiver chip assembly are soldered to the back of the light source circuit board of the light source module by high-temperature soldering, so that the electronic components of the wireless receiver and the light source module share the same circuit board. A PVD film surrounding the wireless receiver and the light source module is provided inside the PUR injection-molded mask. The wireless receiver and the light source module are sealed inside the PUR injection-molded mask by potting glue. The PUR injection-molded mask is fixed to the outside of the glass substrate by 3M adhesive.

2. The wireless power supply module based on automotive glass according to claim 1, characterized in that, The PCB power supply board uses FR-4 material with a thickness of 0.4mm as the substrate of the transmitter board. The power supply chip assembly uses a power supply chip of model JW7951C. The PCB power supply board integrates an electromagnetic filtering module that is electrically connected to the power supply chip assembly. The electromagnetic filtering module is connected to the GND network and is used to suppress noise from the wireless transmitting coil and the wireless receiving coupling coil.

3. The wireless power supply module based on automotive glass according to claim 1, characterized in that, Both the wireless transmitting coupling coil and the wireless receiving coupling coil are wound with 0.1-0.15mm fine wire using high-temperature self-adhesive technology and shaped with hot air at 200℃. The total thickness of the three layers of fine wire is equal to 0.3mm, including 0.3mm of coil + 0.3mm of ferrite + 0.15mm of double-sided adhesive, for a total thickness of ≈0.8mm.

4. The wireless power supply module based on automotive glass according to claim 1, characterized in that, The glass substrate is either double-layer laminated glass or single-layer glass.

5. A wireless power supply module based on automotive glass according to claim 1, characterized in that, The receiver ferrite is A-shaped, and the wireless receiving coupling coil is wound around the A-shaped receiver ferrite.

6. A wireless power supply module based on automotive glass according to claim 1, characterized in that, The parameter calculation steps for the wireless transmitting coupling coil and the wireless receiving coupling coil are as follows: Step S1: When the LC resonant frequencies of the wireless transmitting coupling coil and the wireless receiving coupling coil are consistent: If L p ≠L s Then by adjusting C p C s Compensation is performed to ensure that the resonant frequencies are consistent; If L p With L s When they are not equal, the following conditions must be met: L p ·C p =L s ·C s ; In the formula, f0 represents the resonant frequency, which is the operating frequency at which the circuit resonates, and L... p Indicates parallel inductance, referring to the inductance of the inductor element in a parallel resonant circuit, C. p Indicates parallel capacitance, referring to the capacitance of the capacitor element in a parallel resonant circuit, L s C represents the inductance of a series resonant circuit, specifically the inductance of the inductor element. s This indicates a series capacitor, referring to the capacitance of a capacitor element in a series resonant circuit. Step S2: Coupling coefficient: In the formula, k represents the coupling coefficient, and M represents the mutual inductance; Methods to increase the k value include increasing the coil area, decreasing the spacing, increasing the number of turns, and using a ferrite core. Step S3: The inductance values ​​of the wireless transmitting coupling coil and the wireless receiving coupling coil do not need to be equal, but they must be matched by LC matching to ensure consistent resonant frequencies. The inductance L should be selected according to the voltage requirements. s :L p The ratio ultimately achieves impedance matching and high-efficiency transmission.

7. A wireless power supply module based on automotive glass according to claim 1, characterized in that, The manufacturing steps of the light source module are as follows: Step S1: Fabrication of Mini LED flexible light strip. The blue light chip is transferred to a flexible substrate for die bonding. An optical sealing layer made of transparent epoxy resin is used to seal and fix the blue light chip on the flexible substrate. The flexible substrate is a flexible circuit board. The optical sealing layer is used to protect the blue light chip. A diffusing agent is added to the transparent epoxy resin material of the optical sealing layer. The diffusing agent is used to make the light emitted by the blue light chip more uniform. Step S2: Fabrication of the PC film. Dots are printed on the lower surface of a PC film with a thickness of 0.5mm or more, or dots are formed by carbon dioxide laser. This allows the light from the Mini LED flexible light strip to enter from the side, be conducted within the PC film, and have total internal reflection destroyed by the dots to form a uniform surface light source. A layer of adhesive film containing yellow phosphor is attached to the PC film. The blue LED chip excites the yellow phosphor to form white light, thereby improving the light conversion efficiency and reducing energy loss. Step S3: Install the Mini LED flexible light strip on the side of the PC film and place a high reflectivity reflector under the PC film; thereby realizing the use of the Mini LED flexible light strip to emit light and enter the PC film with dots from the side. The dots destroy the light and form total internal reflection in the PC film, so that the light enters the backlight cavity through the upper surface of the PC film to form a surface light source.

8. The control method for a wireless power supply module based on automotive glass according to claim 1, characterized in that, When the vehicle starts, the wireless transmitter receives power synchronously with the vehicle's position lights and sends signals to the power supply chip assembly. The power supply chip assembly activates the high-frequency inverter circuit, which generates a high-frequency alternating magnetic field at the position of the wireless transmitting coupling coil. The wireless receiving coupling coil on the outside of the glass substrate senses the change in the magnetic field and generates current through electromagnetic induction. After rectification, the current supplies power to the lighting module. The power supply chip monitors the power supply status and temperature in real time and adjusts the output power through the PWM adjustment module integrated on the PCB power supply board.

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