An electric appliance connecting structure of AI intelligent dimming glass

Abstract

This invention discloses an electrical connection structure for AI smart dimming glass, belonging to the field of automotive dimming glass electrical technology. It includes a multi-zone dimming film and a three-segment FPC: the first FPC is a multi-layer board integrating WiFi / Bluetooth / voice control / temperature control local processing chips, enabling distributed autonomous control without the need for a vehicle central processor to relay signals; the second FPC is a double-sided board, and the third FPC is a low-cost single-sided board. The three FPCs are welded together through differentiated insulating openings and through-hole solder pads. This solution eliminates a large number of communication wiring harnesses in the vehicle, reducing wiring costs and vehicle weight, and providing local signal processing and dimming without delay; the three-level differentiated FPC layered design reduces costs, and the segmented modular design facilitates maintenance; the through-hole layered solder pads significantly improve the reliability of solder joints under automotive vibration conditions, solving the industry pain points of existing centralized dimming beams being bulky, costly, difficult to repair with integrated wiring, and prone to solder joint failure. It is suitable for automotive multi-zone AI smart dimming glass.

Description

Technical Field

[0001] This invention relates to the field of electrical connection technology for smart dimming glass, and is particularly applicable to the segmented connection and local autonomous control structure of FPC flexible circuit boards for multi-zone AI smart dimming glass in vehicles. Background Technology

[0002] Current automotive smart dimming glass all adopts a centralized control architecture with a central processing unit (CPU) located far from the dimming film. Power supply and zone dimming communication signals are transmitted between the two via numerous circular wires. This structure results in a large number of communication wires, leading to high costs for wiring harness procurement and cabling; the total weight of the vehicle's wiring harness is also significant, increasing vehicle weight and energy consumption; and all zone dimming signals are uploaded to the central processing unit for processing, resulting in long signal transmission distances and delays in multi-zone dimming.

[0003] Traditional dimming films are paired with FPCs that are one-piece flexible circuit boards. All signal lines are integrated into a single board with a uniform number of layers, making it impossible to reduce costs as needed. Furthermore, if a part of the integrated cable is damaged, the entire board must be replaced, resulting in high maintenance costs. Conventional FPC bonding pads use a single-layer insulation window, resulting in insufficient solder wetting area. Under vehicle vibration conditions, this can easily lead to poor soldering or detachment of the solder joints, causing dimming zone failure.

[0004] Existing technologies lack a dimming glass electrical connection structure that can perform local autonomous calculations, does not require a vehicle host for transfer, is modular and segmented, and has high-reliability welding. Summary of the Invention

[0005] To address the aforementioned technical issues, an electrical connection structure for AI-powered smart dimming glass is provided, enabling local autonomous control of the dimming film, lightweight wiring harness, three-level modular FPC segmentation, and highly reliable solder joints.

[0006] To achieve the above objectives, the present invention discloses an electrical connection structure for AI smart dimming glass, including a multi-zone dimming film and a three-segment FPC flexible circuit board. The multi-zone dimming film is provided with several independent dimming zones, and the three-segment FPC flexible circuit board includes a first FPC body, a second FPC body and a third FPC body connected by soldering in sequence. The first FPC body is a multilayer integrated circuit carrier board, integrating several control chip units; the second FPC body is a double-sided board structure; and the third FPC body is a single-sided board structure. Solder connection structures are provided between the first FPC body and the second FPC body, and between the second FPC body and the third FPC body. The solder connection structure includes a matching upper pad and a lower pad. The lower pad has a single-sided insulating layer opening, the upper pad has a double-sided insulating layer opening, the upper pad has a through solder hole, and both the upper and lower pads have solder alignment holes.

[0007] Furthermore, the multi-zone dimming film is divided into at least two independent dimming zones, each of which is electrically connected to the third FPC main body independently, and its transmittance can be adjusted individually.

[0008] Furthermore, the first FPC body, the second FPC body, and the third FPC body are arranged sequentially along the side of the multi-zone dimming film, and the three FPC sections are independent and can be removed and replaced.

[0009] Furthermore, the control chip unit of the first FPC body includes a signal receiver and a multi-band data processing chip, wherein the signal receiver is at least one of a WiFi module, a Bluetooth module, a voice-controlled acquisition module, and a temperature control module.

[0010] Furthermore, the first FPC body is equipped with only a single power supply line for external power supply, and the dimming control signal is processed locally by the first FPC body, without the need for the vehicle's central processing unit to relay it.

[0011] Furthermore, the through-hole penetrates the double insulating layer of the upper pad, and during soldering, molten solder passes through the through-hole and wets the lower pad.

[0012] Furthermore, the through holes are designed in a double row, with adjacent through holes staggered between single and double rows.

[0013] The beneficial effects of this invention compared to existing technologies are as follows: 1) The distributed local control architecture eliminates a large number of circular communication harnesses in the vehicle, significantly reducing the amount of harnesses used, the cost of wiring materials and the weight of the vehicle's wiring harnesses, resulting in outstanding lightweighting effects; 2) Three-level differentiated FPC layering: the main control section with complex functions adopts multi-layer boards, the intermediate section adopts double-sided boards, and the terminal partition drive section adopts low-cost single-sided boards. The board material is matched as needed to reduce the overall manufacturing cost of FPC. 3) Locally integrated WiFi / Bluetooth / voice control / temperature control multimodal signal acquisition and processing chip, local signal processing, multi-zone dimming with no transmission delay, and fast response speed; 4) Segmented modular FPC: If a single section or segment of the line is damaged, only the corresponding FPC segment needs to be replaced, without the need to replace the entire cable, resulting in low maintenance costs. 5) The differentiated insulation openings and through-hole structure of the upper and lower pads allow the solder to penetrate fully, making the solder joints less prone to falling off or becoming cold-soldered under vehicle vibration environment, thus improving the reliability of electrical connections. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the first FPC body of the present invention.

[0017] Figure 3 This is a schematic diagram of the solder connection structure of the present invention.

[0018] In the figure: 1 is the first FPC body; 11 is the control chip unit; 2 is the second FPC body; 3 is the third FPC body; 4 is the multi-zone dimming film; 5 is the upper pad; 51 is the through hole; 6 is the lower pad; 7 is the solder alignment hole. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0020] One embodiment of the present invention, such as Figure 1 and Figure 2 As shown, it includes a multi-zone dimming film 4 and a three-section FPC flexible circuit board. The multi-zone dimming film 4 is provided with several independent dimming zones. The three-section FPC flexible circuit board includes a first FPC body 1, a second FPC body 2 and a third FPC body 3 connected by solder in sequence. The first FPC body 1 is a multi-layer integrated circuit carrier board, integrating several control chip units 11. The first FPC body 1 is equipped with only a single power supply line for external power supply, eliminating the need for multiple communication harnesses. The dimming control signal is processed locally by the first FPC body 1, without the need for relaying by the vehicle's central processing unit. The second FPC body 2 is a double-sided panel structure, containing FPC transmission lines for 1 to 50 zone signals, used for relaying signals and power supply. The third FPC body 3 is a single-sided panel structure, directly connected to the multi-zone dimming film. Solder connection structures are provided between the first FPC body 1 and the second FPC body 2, and between the second FPC body 2 and the third FPC body 3. The solder connection structure includes a matching upper pad 5 and a lower pad 6. The lower pad 6 has a single-sided insulating layer opening, and the upper pad 5 has a double-sided insulating layer opening. The upper pad 5 has a through-hole tin hole 51, which is designed in a double row. The adjacent through-hole tin holes 51 are staggered between single and double rows. Both the upper pad 5 and the lower pad 6 have welding alignment holes 7 to achieve precise welding alignment. The through-hole tin hole 51 penetrates the double insulating layer of the upper pad 5. During welding, molten solder passes through the through-hole tin hole 51 and wets the conductive copper foil of the lower pad, improving the bonding strength of the solder joint.

[0021] In this embodiment, the multi-zone dimming film 4 is divided into eight independent dimming zones. Each dimming zone is electrically connected to the third FPC body 3 independently, and the transmittance of each zone can be adjusted individually.

[0022] The first FPC body 1, the second FPC body 2, and the third FPC body 3 are arranged sequentially along the side of the multi-zone dimming film 4. The three FPC sections are independent and can be removed and replaced.

[0023] In this embodiment, the first FPC body 1 has a built-in control chip unit 11, which integrates a WiFi module, a Bluetooth receiver, a voice control acquisition chip, a temperature control acquisition chip, and a multi-band processing chip. Only a single power line is led out to connect to the vehicle's low-voltage power supply, and no multiple communication harnesses are connected to the vehicle's host.

[0024] The working process of this embodiment is as follows: the in-vehicle voice control, mobile phone Bluetooth / WiFi signal, and window temperature signal are all directly collected and processed by the built-in chip of the first FPC main body, without the need to be transmitted to the vehicle's central processor; after the calculation is completed, the zone drive signal is directly output, which is relayed by the second FPC main body and distributed to the corresponding dimming zone by the third FPC main body to realize single-zone / multi-zone synchronous dimming; the whole vehicle only needs to provide one power supply line, saving dozens of zone communication wire harnesses.

[0025] When a dimming zone fails, only the corresponding section of the third FPC body needs to be replaced; if the main control module fails, only the first FPC body needs to be replaced, making maintenance convenient. The layered insulation of the upper and lower pads and the through-hole structure improve the vibration resistance of the solder joints, making it suitable for bumpy vehicle conditions and less prone to open circuits during long-term use.

[0026] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0027] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. An electrical connection structure for AI smart dimming glass, comprising a multi-zone dimming film (4) and a three-section FPC flexible circuit board, characterized in that, The multi-zone dimming film (4) is provided with several independent dimming zones, and the three-section FPC flexible circuit board includes a first FPC body (1), a second FPC body (2) and a third FPC body (3) that are connected by soldering in sequence. The first FPC body (1) is a multilayer integrated circuit carrier board, integrating several control chip units (11); the second FPC body (2) is a double-sided panel structure; and the third FPC body (3) is a single-sided panel structure. Solder connection structures are provided between the first FPC body (1) and the second FPC body (2), and between the second FPC body (2) and the third FPC body (3). The solder connection structure includes a matching upper pad (5) and a lower pad (6). The lower pad (6) has a single-sided insulating layer opening, and the upper pad (5) has a double-sided insulating layer opening. A through solder hole (51) is provided on the upper pad (5). Solder alignment holes (7) are provided on both the upper pad (5) and the lower pad (6).

2. The electrical connection structure of an AI smart dimming glass according to claim 1, characterized in that, The multi-zone dimming film (4) is divided into at least two independent dimming zones. Each dimming zone is electrically connected to the third FPC body (3) independently, and its transmittance can be adjusted individually.

3. The electrical connection structure of an AI smart dimming glass according to claim 1, characterized in that, The first FPC body (1), the second FPC body (2) and the third FPC body (3) are arranged sequentially along the side of the multi-zone dimming film (4), and the three FPC sections are independent and can be removed and replaced.

4. The electrical connection structure of an AI smart dimming glass according to claim 1, characterized in that, The control chip unit (11) of the first FPC body (1) includes a signal receiver and a multi-band data processing chip. The signal receiver is at least one of a WiFi module, a Bluetooth module, a voice control acquisition module, and a temperature control module.

5. The electrical connection structure of an AI smart dimming glass according to claim 1, characterized in that, The first FPC main body (1) is equipped with only a single power supply line for external power supply. The dimming control signal is processed locally by the first FPC main body (1) without the need for the vehicle's central processing unit to relay it.

6. The electrical connection structure of an AI smart dimming glass according to claim 1, characterized in that, The through hole (51) penetrates the double insulating layer of the upper pad (5), and during soldering, molten solder passes through the through hole (51) and wets the lower pad.

7. The electrical connection structure of an AI smart dimming glass according to claim 6, characterized in that, The through-holes (51) are designed in a double row, and the single and double rows of adjacent through-holes (51) are staggered.

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