Vehicle-mounted TBOX and vehicle

Abstract

The utility model provides a vehicle-mounted TBOX and a vehicle, and relates to the technical field of vehicle-mounted systems, the vehicle-mounted TBOX comprises a shell and a multilayer circuit board assembly arranged in the shell, the multilayer circuit board assembly comprises a top-layer circuit board, a middle-layer circuit board and a bottom-layer circuit board, the top-layer circuit board is provided with a positioning module, and the middle-layer circuit board and the bottom-layer circuit board are arranged on the bottom-layer circuit board. A three-axis inertial measurement unit is arranged on the middle-layer circuit board, a micro-control unit and a 5G module are arranged on the bottom-layer circuit board, and the top-layer circuit board, the middle-layer circuit board and the bottom-layer circuit board are connected through flexible circuit boards. The vehicle comprises the vehicle-mounted TBOX. According to the vehicle-mounted TBOX provided by the utility model, the problem that a vehicle-mounted TBOX which is small in size, simple in wiring and good in heat dissipation effect is lacked in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle system technology, and specifically relates to a vehicle-mounted TBOX and a vehicle. Background Technology

[0002] Autonomous driving is a crucial direction for the future development of automobiles, and vehicle-road-cloud integration provides essential technical support. High-precision positioning technology can provide accurate positioning and navigation services for autonomous vehicles, ensuring the reliability and safety of autonomous driving. However, current GNSS positioning technology's TBOX cannot consistently provide high-precision positioning information in complex urban environments, and still cannot adequately meet the application needs of intelligent connected vehicles. Low-cost hardware capable of continuously providing high-precision positioning information is needed to meet these positioning requirements.

[0003] In existing technologies, this problem can be addressed through GNSS / INS fusion solutions. These solutions primarily involve two types of hardware: a standalone PBOX box and an IMU integrated into a domain controller. However, a standalone PBOX box significantly increases hardware costs and requires additional wiring and space. In the domain controller integration approach, the IMU and other components are highly susceptible to temperature variations, leading to IMU output distortion and affecting the accuracy of spatiotemporal positioning information. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a vehicle-mounted TBOX, which aims to solve the problem of the lack of a vehicle-mounted TBOX in the prior art that is small in size, has simple wiring, and has good heat dissipation.

[0005] The vehicle-mounted TBOX proposed in this utility model includes a housing and a multi-layer circuit board assembly disposed within the housing. The multi-layer circuit board assembly includes a top circuit board, a middle circuit board, and a bottom circuit board. The top circuit board is provided with a positioning module, the middle circuit board is provided with a three-axis inertial measurement unit, and the bottom circuit board is provided with a microcontroller unit and a 5G module. The top circuit board, the middle circuit board, and the bottom circuit board are connected by a flexible circuit board.

[0006] The aforementioned vehicle-mounted TBOX integrates the positioning module, three-axis inertial measurement unit (IMU), microcontroller, and 5G module into a single housing. This fusion solution addresses the limitations of current GNSS positioning technology TBOXes in providing consistently high-precision positioning information in complex urban environments, failing to adequately meet the application requirements of intelligent connected vehicles. Furthermore, in practical implementation, a multi-layered circuit board assembly is used. The positioning module is placed on the top layer, the IMU on the middle layer, and the microcontroller and 5G module on the bottom layer. This spatial separation prevents over-concentration, which could hinder heat dissipation and ensure positioning accuracy. The centralized design significantly reduces wiring complexity and failure rate, while layered isolation and flexible circuit board connections reduce electromagnetic interference. This innovative structural design compactly integrates multiple hardware modules into a single TBOX, achieving low-cost, high-precision, and highly stable continuous positioning through physical isolation, optimized heat dissipation, and anti-interference layout. Therefore, this invention solves the problem of the lack of a small, simple, and well-heat-dissipated vehicle-mounted TBOX in the prior art.

[0007] In addition, the vehicle-mounted TBOX proposed according to this utility model may also have the following additional technical features:

[0008] Preferably, the positioning module is provided with a metal shielding cover on the outside, and the metal shielding cover is provided with heat dissipation holes on the outside.

[0009] Preferably, the triaxial inertial measurement unit is provided with an aluminum shell on its outer side, and a damping pad is provided at the bottom of the triaxial inertial measurement unit.

[0010] Preferably, the bottom circuit board is provided with heat sinks, and a plurality of heat sinks are distributed at equal intervals along the length direction of the bottom circuit board.

[0011] Preferably, mounting holes are provided at the top corners of the top circuit board, the middle circuit board, and the bottom circuit board to fix the top circuit board, the middle circuit board, and the bottom circuit board inside the housing.

[0012] Preferably, the bottom of the housing is provided with heat-dissipating silicone, which abuts against the heat sink.

[0013] Preferably, the housing has symmetrically distributed ventilation slots on both sides, and the housing has multiple interface slots on the side adjacent to the ventilation slots.

[0014] Preferably, ventilation holes are provided on the top circuit board, the middle circuit board and the bottom circuit board.

[0015] Preferably, the housing is made of metal material, and the inner side of the housing is provided with an electromagnetic shielding paint layer.

[0016] In addition, this utility model also provides a vehicle in which the vehicle air conditioner includes the aforementioned vehicle TBOX. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a vehicle-mounted TBOX proposed in one embodiment of the present invention;

[0018] Figure 2 for Figure 1 Exploded view of the concealed secondary shell;

[0019] Figure 3 This is a schematic diagram of the structure of the bottom circuit board proposed in one embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional schematic diagram of the positioning module proposed in one embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional schematic diagram of a triaxial inertial measurement unit proposed in one embodiment of the present invention.

[0022] Explanation of key component symbols:

[0023]

[0024]

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 5 The image shows a vehicle-mounted TBOX according to an embodiment of the present invention, comprising a housing 10 and a multilayer circuit board assembly disposed within the housing 10, wherein:

[0030] The multilayer circuit board assembly includes a top circuit board 20, a middle circuit board 30, and a bottom circuit board 40. The top circuit board 20 is equipped with a positioning module 50, the middle circuit board 30 is equipped with a triaxial inertial measurement unit 60, and the bottom circuit board 40 is equipped with a microcontroller unit 70 and a 5G module 80. The top circuit board 20, the middle circuit board 30, and the bottom circuit board 40 are connected by a flexible circuit board 90.

[0031] Understandably, by integrating the positioning module 50, the three-axis inertial measurement unit 60, the microcontroller unit 70, and the 5G module 80 into a single housing 10, the fusion solution addresses the current GNSS positioning technology's inability to continuously provide high-precision positioning information in complex urban environments, thus failing to adequately meet the application requirements of intelligent connected vehicles. Furthermore, in practical implementation, a multi-layered circuit board assembly is used. The positioning module 50 is placed on the top circuit board, the three-axis inertial measurement unit 60 on the middle circuit board 30, and the microcontroller unit 70 and 5G module 80 on the bottom circuit board 40. This spatial separation prevents excessive concentration, which could hinder heat dissipation and ensure positioning accuracy. Moreover, centralized placement significantly reduces wiring complexity and failure rate, and layered isolation connected via a flexible circuit board 90 reduces electromagnetic interference. Therefore, this solution, through innovative structural design, compactly integrates multiple hardware modules into a single TBOX, achieving low-cost, high-precision, and highly stable continuous positioning through physical isolation, optimized heat dissipation, and anti-interference layout. Therefore, this utility model solves the problem of the lack of a vehicle-mounted TBOX that is small in size, has simple wiring, and has good heat dissipation in the prior art.

[0032] Specifically, the positioning module 50 is provided with a metal shield 51 on its outer side, and heat dissipation holes 52 are provided on the outer side of the metal shield 51. In specific implementations, the metal shield 51 is used to enhance the anti-interference performance of the positioning module 50, and the heat dissipation holes 52 on the metal shield 51 are provided to ensure the heat dissipation efficiency of the positioning module 50, so that the positioning module 50 can operate normally. In specific implementations, multiple heat dissipation holes 52 are evenly distributed on the metal shield 51 at equal intervals. In addition, in specific implementations, the positioning module 50 can be a multi-band GNSS antenna module, which is embedded with a ceramic substrate antenna and covered with a metal shield 51. The thickness of the metal shield 51 is 0.5-1mm, and the surface of the shield has honeycomb-shaped heat dissipation holes 52 with a diameter of 1mm-1.5mm.

[0033] Additionally, the triaxial inertial measurement unit 60 has an aluminum shell 61 on its outer side and a damping pad 62 on its bottom. The aluminum shell 61 improves anti-interference performance, and the damping pad 62 enhances vibration resistance, reducing the impact of vehicle vibration on the triaxial inertial measurement unit 60. In a specific implementation, the triaxial inertial measurement unit 60 can be a triaxial MEMSMU module, containing an accelerometer and a gyroscope, encapsulated in a vacuum aluminum box, and externally wrapped with a ceramic fiber heat insulation layer with a thickness of 2mm-3mm. Furthermore, the micro-hole unit can be an MCU processing unit: a chip using BGA packaging, with a copper-based heat sink 41 soldered to the bottom. The 5G module 80 supports NSA / SA dual-mode and CAN FD interfaces, and the module is fixed to the edge of the underlying circuit board 40 with screws.

[0034] Specifically, the bottom circuit board 40 is provided with heat sinks 41, and multiple heat sinks 41 are equidistantly distributed along the length of the bottom circuit board 40. By setting multiple heat sinks 41, the contact area between the heat sinks 41 and the air is increased, that is, the heat dissipation area is increased, thereby improving the heat dissipation effect of the heat sinks 41. This ensures that the modules inside the housing 10 will not be damaged or malfunction due to overheating.

[0035] Additionally, mounting holes 21 are provided at the top corners of the top-layer circuit board 20, the middle-layer circuit board 30, and the bottom-layer circuit board 40 to secure them within the housing 10. In practice, the mounting holes 21 and fasteners work together to stably fix each circuit board within the housing 10, preventing the circuit boards and their modules from shaking or colliding within the housing 10 due to vehicle vibration.

[0036] Specifically, the bottom of the housing 10 is provided with heat-dissipating silicone, which abuts against the heat sink 41. Furthermore, the housing 10 is made of metal, and the inner side of the housing 10 is provided with an electromagnetic shielding coating. In practical implementation, by using metal to manufacture the housing 10, the housing 10 itself has strong thermal conductivity. The heat-dissipating silicone on the housing 10 allows heat to be transferred and dissipated quickly through direct contact. In addition, the electromagnetic shielding coating enhances the anti-interference effect of the housing 10, ensuring stable operation of the module inside the housing 10. Specifically, the housing 10 can be made of magnesium-aluminum alloy, with a thickness of 1.2mm-1.5mm, and the conductivity of the electromagnetic shielding coating on the inner wall is greater than 80dB.

[0037] Additionally, the housing 10 has symmetrically distributed ventilation slots 11 on both sides, and multiple interface slots 12 are located on the side adjacent to the ventilation slots 11. By providing the ventilation slots 11, the space inside the housing 10 is connected to the outside, thereby improving the heat dissipation effect inside the housing 10. Furthermore, the outer shell has multiple standardized interface slots 12 for connecting to the outside. In practical implementation, silicone sealing rings are also provided at the interfaces to achieve waterproofing.

[0038] Specifically, ventilation holes 22 are provided on the top circuit board 20, the middle circuit board 30, and the bottom circuit board 40. By providing ventilation holes 22, air can circulate quickly between the circuit boards, thereby enhancing the overall heat dissipation efficiency inside the housing 10.

[0039] In summary, the vehicle-mounted TBOX in the above embodiments of this utility model integrates the positioning module 50, the three-axis inertial measurement unit 60, the microcontroller unit 70, and the 5G module 80 into a single housing 10. This fusion solution addresses the limitation of current GNSS positioning technology TBOXes in providing consistently high-precision positioning information in complex urban environments, which still fails to adequately meet the application requirements of intelligent connected vehicles. Furthermore, in specific implementations, a multi-layered circuit board assembly is used. The positioning module 50 is placed on the top circuit board, the three-axis inertial measurement unit 60 on the middle circuit board 30, and the microcontroller unit 70 and 5G module 80 on the bottom circuit board 40. This spatially separates them, preventing excessive concentration and heat dissipation, thus ensuring positioning accuracy. Moreover, centralized placement significantly reduces wiring difficulty and failure rate, and layered isolation connected via flexible circuit boards 90 reduces electromagnetic interference. Furthermore, this solution, through innovative structural design, compactly integrates multiple hardware modules into a single TBOX. Through physical isolation, optimized heat dissipation, and anti-interference layout, it achieves low-cost, high-precision, and highly stable continuous positioning. Therefore, this invention solves the problem of the lack of a small-sized, simple-wiring, and well-heat-dissipating vehicle-mounted TBOX in the prior art.

[0040] In addition, this utility model also proposes a vehicle including the vehicle-mounted TBOX described in the above embodiments.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vehicle-mounted TBOX, characterized by, The application relates to a vehicle-mounted TBOX, which comprises a shell and a multilayer circuit board assembly arranged in the shell, the multilayer circuit board assembly comprising a top layer circuit board, a middle layer circuit board and a bottom layer circuit board, the top layer circuit board being provided with a positioning module, the middle layer circuit board being provided with a three-axis inertial measurement unit, and the bottom layer circuit board being provided with a micro control unit and a 5G module, the top layer circuit board, the middle layer circuit board and the bottom layer circuit board being connected through a flexible circuit board.

2. The vehicle-mounted TBOX of claim 1, wherein, The positioning module is provided with a metal shielding cover outside, and the metal shielding cover is provided with heat dissipation holes outside.

3. The vehicle-mounted T-BOX according to claim 1, characterized in that, The three-axis inertial measurement unit is provided with an aluminum shell outside, and the three-axis inertial measurement unit is provided with a damping pad at the bottom.

4. The vehicle-mounted T-BOX of claim 1, wherein, The bottom layer circuit board is provided with heat dissipation fins, and a plurality of heat dissipation fins are equidistantly distributed along the length direction of the bottom layer circuit board.

5. The vehicle-mounted T-BOX according to claim 1, characterized in that, The top layer circuit board, the middle layer circuit board and the bottom layer circuit board are all provided with mounting holes at the top corners, so that the top layer circuit board, the middle layer circuit board and the bottom layer circuit board are fixed in the shell.

6. The vehicle-mounted T-BOX of claim 4, wherein, The shell is provided with heat dissipation silica gel at the bottom, and the heat dissipation silica gel abuts against the heat dissipation fins.

7. The vehicle-mounted T-BOX according to claim 1, characterized in that, The shell is provided with symmetrically distributed ventilation grooves at both sides, and the shell is provided with a plurality of interface grooves at one side adjacent to the ventilation grooves.

8. The vehicle-mounted T-BOX of claim 1, wherein, The top layer circuit board, the middle layer circuit board and the bottom layer circuit board are all provided with ventilation holes.

9. The vehicle-mounted T-BOX of claim 1, wherein, The shell is made of metal material, and the inner side of the shell is provided with an electromagnetic shielding paint layer.

10. A vehicle characterized by comprising: The application further relates to a vehicle-mounted TBOX comprising any one of the shell and the multilayer circuit board assembly according to claims 1 to 9.

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