Vehicle-mounted domain control device and vehicle

Abstract

The utility model discloses a vehicle-mounted domain control device and a vehicle, the vehicle-mounted domain control device comprises at least two PCB control boards and a shielding structure, and the two adjacent PCB control boards are connected through a board-to-board connector; the shielding structure comprises a shielding cavity, the board-to-board connector is contained in the shielding cavity, and the upper end and the lower end of the shielding structure are connected with the two adjacent PCB control boards in a grounded mode respectively so that the board-to-board connector can be sealed and electromagnetic radiation can be absorbed and reduced. According to the utility model, the shielding structure is independently arranged, the board-to-board connector is accommodated in the shielding cavity of the shielding structure, and the shielding structure is respectively connected with the two adjacent PCB control boards in a grounding manner, so that the shielding structure can shield and absorb space radiation energy and conduct the space radiation energy to the ground, and the effect of reducing radiation power is achieved; meanwhile, due to the isolation and sealing capabilities of the shielding cavity, the interference of interference signals radiated by the outside on board-to-board high-speed signals can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted controllers, in particular to a vehicle-mounted domain control device and a vehicle. Background Art

[0002] The domain controller is the core component of the automotive functional domain. It can integrate the core functions that originally required many ECUs to implement, greatly improving the system's functional integration. The domain controller is developing towards a centralized EEA (Electrical / Electronic Architecture) with five domains (power domain, chassis domain, body domain, cockpit domain, and autonomous driving domain) and a centralized EEA with three domains (vehicle control domain controller, intelligent driving domain controller, and intelligent cockpit domain controller).

[0003] Currently, the mainstream vehicle-mounted domain controllers on the market need to adopt a two-PCB design due to functional and layout space limitations. The two PCBs are directly connected using a board-to-board connector. When high-speed signals pass through the board-to-board connector, it will bring EMC (electromagnetic compatibility) risks, especially during RE (electromagnetic interference) testing, causing the radiation power to exceed the requirements of the vehicle manufacturer. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a vehicle-mounted domain control device and a vehicle, which adds a separate shielding cavity and can solve the problem of excessive radiation power caused by high-speed signals passing through a board-to-board connector.

[0005] According to a first aspect of the utility model, a vehicle-mounted domain control device is provided, comprising at least two PCB control boards and a shielding structure, wherein two adjacent PCB control boards are connected via a board-to-board connector; the shielding structure comprises a shielding cavity, wherein the board-to-board connector is accommodated in the shielding cavity, and the upper and lower ends of the shielding structure are respectively grounded to the two adjacent PCB control boards, and the shielding structure seals the board-to-board connector.

[0006] In an optional implementation, a copper-exposed area is provided at a position where the PCB control board contacts the shielding structure, and the shielding structure is grounded through the copper-exposed area.

[0007] In an optional implementation, the planarity of the copper exposed area is not less than 0.2 mm, and the copper exposed area is processed by a CNC lathe.

[0008] In an optional implementation, the copper exposed area is located at the periphery of the board-to-board connector.

[0009] In an optional implementation, the width of the copper exposed area is greater than the contact area between the shielding structure and the PCB control board.

[0010] In an optional embodiment, the shielding structure includes an upper connecting part, a shielding plate and a lower connecting part, the upper connecting part is located above the shielding plate, the lower connecting part is located below the shielding plate, and the upper connecting part is connected to the lower connecting part to form the shielding cavity.

[0011] In an optional embodiment, the size of the shielding plate is substantially the same as the size of at least one of the two PCB control boards.

[0012] In an optional implementation, one of the two PCB control boards is provided with a cockpit domain control chip, and the other is provided with an intelligent driving domain control chip.

[0013] In an optional embodiment, the shielding structure is made of die-cast aluminum.

[0014] The second aspect of the utility model provides a vehicle, including a vehicle-mounted domain control device. The vehicle-mounted domain control device includes at least two PCB control boards and a shielding structure, and two adjacent PCB control boards are connected by a board-to-board connector; the shielding structure includes a shielding cavity, and the board-to-board connector is accommodated in the shielding cavity, and the upper and lower ends of the shielding structure are respectively connected to the ground of two adjacent PCB control boards to seal the board-to-board connector and absorb and reduce electromagnetic radiation.

[0015] The utility model separately sets a shielding structure to accommodate the board-to-board connector in the shielding cavity of the shielding structure, and the shielding structure is grounded to two adjacent PCB control boards respectively. The shielding structure can shield and absorb spatial radiation energy and conduct it to the ground, thereby achieving the effect of reducing the radiation power. At the same time, due to the isolation and sealing ability of the shielding cavity, the interference of external radiation interference signals on the board-to-board high-speed signal can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of a vehicle-mounted domain control device in an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of the connection between a PCB control board and a shielding structure in an embodiment of the utility model.

[0019] Figure 3 for Figure 2Exploded diagram of the connection between the PCB control board and the shielding structure.

[0020] Figure 4 It is a top view of one of the PCB control boards in the embodiment of the utility model.

[0021] Figure 5 It is a top view of the shielding structure in the embodiment of the present utility model.

[0022] In-vehicle domain control device 100; PCB control board 1 / 5; board-to-board connector 2 / 4; shielding structure 3; shielding cavity 6; upper connecting part 7; lower connecting part 8; shielding plate 9; exposed copper area 10. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] It should be understood that the terms used in this description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] See also Figure 1 and Figure 2 The utility model provides a vehicle-mounted domain control device 100, which can accommodate at least one of a power domain chip, a chassis domain chip, a body domain chip, a cockpit domain chip and an autonomous driving domain chip; each chip can be arranged on a PCB control board 1 or a PCB control board 5.

[0026] For example, a PCB control board 1 or a PCB control board 5 is provided in the vehicle-mounted domain control device 100 , and a cockpit domain control chip is provided on one of the PCB control board 1 or the PCB control board 5 , and an intelligent driving domain control chip is provided on the other.

[0027] In some embodiments, a plurality of PCB control boards may be provided in the vehicle-mounted domain control device 100 , for example, no less than two PCB control boards.

[0028] Figure 2 As an embodiment, the vehicle-mounted domain control device 100 includes a PCB control board 1 or a PCB control board 5 and a shielding structure 3. The shielding structure 3 is located between the PCB control board 1 and the PCB control board 5. Figure 3As shown, the PCB control board 1 and the PCB control board 5 are connected via a board-to-board connector, which includes a board-to-board connector 2 and a board-to-board connector 4. The board-to-board connector generates electromagnetic radiation during signal transmission and is easily interfered by external radiation. Figure 3 As shown, two adjacent PCB control boards are connected via a board-to-board connector; the utility model provides an independent shielding structure 3 to seal the board-to-board connector.

[0029] Please continue reading Figure 3 , the shielding structure 3 includes a shielding cavity 6, and the board-to-board connector 2 and the board-to-board connector 4 are accommodated in the shielding cavity 6. The shielding structure 3 is made of die-cast aluminum of metal material, and the upper and lower ends of the shielding structure 3 are respectively grounded to two adjacent PCB control boards, so that the shielding structure 3 can form a good grounding shielding wall to effectively improve electromagnetic crosstalk. Therefore, the shielding structure 3 can absorb the electromagnetic radiation generated by the board-to-board connector while sealing the board-to-board connector, thereby reducing electromagnetic radiation; it can also shield electromagnetic interference generated by the outside world.

[0030] Furthermore, the PCB control board 1 and the board-to-board connector 2 are assembled through a patch process, the shielding structure 3 is assembled with the PCB control board 1 and the PCB control board 5 respectively by screw locking, and the PCB control board 5 and the board-to-board connector 4 are assembled through a patch process.

[0031] To ensure better grounding of the shielding structure 3, refer to Figure 4 A copper exposed area 10 is provided at the position where the PCB control board 1 or the PCB control board 5 contacts the shielding structure 3, and the shielding structure 3 is grounded through the copper exposed area 10. In some embodiments, the copper exposed area 10 is processed by a CNC lathe to ensure the flatness requirement and avoid signal leakage, but the utility model is not limited thereto.

[0032] As an embodiment of the present invention, the flatness of the copper exposed area 10 is not less than 0.2 mm. For example, the flatness is 0.2 mm to 0.5 mm. The flatness of the copper exposed area 10 is 0.2 mm; or the flatness of the copper exposed area 10 is 0.3 mm; or the flatness of the copper exposed area 10 is 0.5 mm.

[0033] Please continue to refer to Figure 4 Taking the PCB control board 5 and the board-to-board connector 4 as an example, it should be understood that the PCB control board 1 and the board-to-board connector 2 also have the same structure.

[0034] exist Figure 4In the figure, the copper exposed area 10 is located at the periphery of the board-to-board connector 4, and the copper exposed area 10 surrounds the board-to-board connector 4. The copper exposed area 10 is the copper area of ​​the PCB control board, which is used for grounding.

[0035] Furthermore, in order to better realize the grounding connection between the shielding structure 3 and the PCB control board, in the present invention, the width of the copper exposed area 10 is greater than the contact area between the shielding structure 3 and the PCB control board.

[0036] refer to Figure 4 As shown in the copper exposed area 10 , the width of the copper exposed area 10 may be set to be twice the width (thickness) of the shielding structure 3 .

[0037] When the shielding structure 3 is fixed to the PCB control board 1 or the PCB control board 5 , a better contact effect can be achieved to avoid signal leakage and external signal interference.

[0038] For further information, see Figure 3 In the embodiment of the present utility model, the shielding structure 3 includes an upper connecting portion 7, a shielding plate 9 and a lower connecting portion 8, wherein the upper connecting portion 7 and the lower connecting portion 8 are adapted to the board-to-board connector. Figure 3 It can be seen that the upper connecting portion 7 is located above the shielding plate 9, and the lower connecting portion 8 is located below the shielding plate 9. The upper connecting portion 7 is connected to the lower connecting portion 8 to form the shielding cavity 6 to achieve the electromagnetic shielding function. In some embodiments, the shielding effectiveness is improved by about 15dB at high frequencies.

[0039] In some embodiments of the utility model, the shielding plate 9 is a plate-shaped structure, and the size of the shielding plate 9 is at least substantially the same as the size of one of the two PCB control boards. The shielding plate 9 can reduce the electromagnetic interference between the two PCB control boards. The size of the shielding plate 9 is the same as or slightly larger than the PCB control board, and can shield the signal interference of one PCB control board to another PCB control board.

[0040] The utility model separately sets up a shielding structure 3, accommodates the board-to-board connector in the shielding cavity 6 of the shielding structure 3, and the shielding structure 3 is respectively grounded to two adjacent PCB control boards. The shielding structure 3 can shield and absorb spatial radiation energy and conduct it to the ground, thereby achieving the effect of reducing the radiation power. At the same time, due to the isolation and sealing ability of the shielding cavity 6, the interference of external radiation interference signals on the board-to-board high-speed signal can be reduced.

[0041] In addition, the present invention also provides a vehicle, which includes the above-mentioned vehicle-mounted domain control device 100. The vehicle can be a new energy vehicle or a traditional fuel vehicle, including but not limited to a pure electric vehicle, a hybrid vehicle, a vehicle using a hydrogen fuel cell, a vehicle using gasoline or diesel, etc.

[0042] See also Figure 1 and Figure 2 The utility model provides a vehicle-mounted domain control device 100, which can accommodate at least one of a power domain chip, a chassis domain chip, a body domain chip, a cockpit domain chip and an autonomous driving domain chip; each chip can be arranged on a PCB control board 1 or a PCB control board 5.

[0043] For example, a PCB control board 1 or a PCB control board 5 is provided in the vehicle-mounted domain control device 100 , and a cockpit domain control chip is provided on one of the PCB control board 1 or the PCB control board 5 , and an intelligent driving domain control chip is provided on the other.

[0044] In some embodiments, a plurality of PCB control boards may be provided in the vehicle-mounted domain control device 100 , for example, no less than two PCB control boards.

[0045] Figure 2 As an embodiment, the vehicle-mounted domain control device 100 includes a PCB control board 1 or a PCB control board 5 and a shielding structure 3. The shielding structure 3 is located between the PCB control board 1 and the PCB control board 5. Figure 3 As shown, the PCB control board 1 and the PCB control board 5 are connected via a board-to-board connector, which includes a board-to-board connector 2 and a board-to-board connector 4. The board-to-board connector generates electromagnetic radiation during signal transmission and is easily interfered by external radiation. Figure 3 As shown, two adjacent PCB control boards are connected via a board-to-board connector; the utility model provides an independent shielding structure 3 to seal the board-to-board connector.

[0046] Please continue reading Figure 3 , the shielding structure 3 includes a shielding cavity 6, and the board-to-board connector 2 and the board-to-board connector 4 are accommodated in the shielding cavity 6. The shielding structure 3 is made of die-cast aluminum of metal material, and the upper and lower ends of the shielding structure 3 are respectively grounded to two adjacent PCB control boards, so that the shielding structure 3 can form a good grounding shielding wall to effectively improve electromagnetic crosstalk. Therefore, the shielding structure 3 can absorb the electromagnetic radiation generated by the board-to-board connector while sealing the board-to-board connector, thereby reducing electromagnetic radiation; it can also shield electromagnetic interference generated by the outside world.

[0047] Furthermore, the PCB control board 1 and the board-to-board connector 2 are assembled through a patch process, the shielding structure 3 is assembled with the PCB control board 1 and the PCB control board 5 respectively by screw locking, and the PCB control board 5 and the board-to-board connector 4 are assembled through a patch process.

[0048] To ensure better grounding of the shielding structure 3, refer to Figure 4 A copper exposed area 10 is provided at the position where the PCB control board 1 or the PCB control board 5 contacts the shielding structure 3, and the shielding structure 3 is grounded through the copper exposed area 10. In some embodiments, the copper exposed area 10 is processed by a CNC lathe to ensure the flatness requirement and avoid signal leakage, but the utility model is not limited thereto.

[0049] As an embodiment of the present invention, the flatness of the copper exposed area 10 is not less than 0.2 mm, such as a flatness of 0.2 mm to 0.5 mm. The flatness of the copper exposed area 10 is 0.2 mm; or the flatness of the copper exposed area 10 is 0.3 mm; or the flatness of the copper exposed area 10 is 0.5 mm.

[0050] Please continue to refer to Figure 4 Taking the PCB control board 5 and the board-to-board connector 44 as an example, it should be understood that the PCB control board 1 and the board-to-board connector 2 also have the same structure.

[0051] exist Figure 4 In the figure, the copper exposed area 10 is located at the periphery of the board-to-board connector 4, and the copper exposed area 10 surrounds the board-to-board connector 4. The copper exposed area 10 is the copper area of ​​the PCB control board, which is used for grounding.

[0052] Furthermore, in order to better realize the grounding connection between the shielding structure 3 and the PCB control board, in the present invention, the width of the copper exposed area 10 is greater than the contact area between the shielding structure 3 and the PCB control board.

[0053] See also Figure 5 As an embodiment of the present invention, the contact area between the shielding structure 3 and the PCB control board is a frame-shaped structure with a thickness of 1.5 cm to 4 cm and has four chamfers, and the chamfers are 3 cm to 5 cm.

[0054] refer to Figure 4 The exposed copper area 10 shown may have a width of 3 cm to 5 cm, which is approximately twice the width (thickness) of the shielding structure 3 .

[0055] When the shielding structure 3 is fixed to the PCB control board 1 or the PCB control board 5 , a better contact effect can be achieved to avoid signal leakage and external signal interference.

[0056] For further information, see Figure 3 In the embodiment of the present utility model, the shielding structure 3 includes an upper connecting portion 7, a shielding plate 9 and a lower connecting portion 8, wherein the upper connecting portion 7 and the lower connecting portion 8 are adapted to the board-to-board connector. Figure 3 It can be seen that the upper connecting portion 7 is located above the shielding plate 9, and the lower connecting portion 8 is located below the shielding plate 9. The upper connecting portion 7 is connected to the lower connecting portion 8 to form the shielding cavity 6 to achieve the electromagnetic shielding function. In some embodiments, the shielding effectiveness is improved by about 15dB at high frequencies.

[0057] In some embodiments of the utility model, the shielding plate 9 is a plate-shaped structure, and the size of the shielding plate 9 is at least substantially the same as the size of one of the two PCB control boards. The shielding plate 9 can reduce the electromagnetic interference between the two PCB control boards, and the size of the shielding plate 9 is the same as or slightly larger than the PCB control board, which can shield the signal interference of one PCB control board to another PCB control board.

[0058] The utility model separately sets up a shielding structure 3, accommodates the board-to-board connector in the shielding cavity 6 of the shielding structure 3, and the shielding structure 3 is respectively grounded to two adjacent PCB control boards. The shielding structure 3 can shield and absorb spatial radiation energy and conduct it to the ground, thereby achieving the effect of reducing the radiation power. At the same time, due to the isolation and sealing ability of the shielding cavity 6, the interference of external radiation interference signals on the board-to-board high-speed signal can be reduced.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, any technician familiar with the profession can modify the technical solutions recorded in the aforementioned embodiments without departing from the scope of the technical solutions of the present invention, or replace some of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vehicle-mounted domain control device, characterized in that: It includes at least two PCB control boards and a shielding structure, and two adjacent PCB control boards are connected by a board-to-board connector; the shielding structure includes a shielding cavity, and the board-to-board connector is accommodated in the shielding cavity, and the upper and lower ends of the shielding structure are respectively grounded to the two adjacent PCB control boards, and the shielding structure seals the board-to-board connector.

2. The vehicle-mounted domain control device according to claim 1, characterized in that: A copper-exposed area is provided at a position where the PCB control board contacts the shielding structure, and the shielding structure is grounded through the copper-exposed area.

3. The vehicle-mounted domain control device according to claim 2, characterized in that: The planarity of the copper exposed area is not less than 0.2 mm.

4. The vehicle-mounted domain control device according to claim 3, characterized in that: The exposed copper area is located at an outer periphery of the board-to-board connector.

5. The vehicle-mounted domain control device according to claim 4, characterized in that: The width of the copper exposed area is greater than the contact area between the shielding structure and the PCB control board.

6. The vehicle-mounted domain control device according to claim 1, characterized in that: The shielding structure includes an upper connecting part, a shielding plate and a lower connecting part. The upper connecting part is located above the shielding plate, the lower connecting part is located below the shielding plate, and the upper connecting part is connected to the lower connecting part to form the shielding cavity.

7. The vehicle-mounted domain control device according to claim 6, characterized in that: The size of the shielding plate is at least substantially the same as the size of one of the two PCB control boards.

8. The vehicle-mounted domain control device according to any one of claims 1 to 7, characterized in that: One of the two PCB control boards is provided with a cockpit domain control chip, and the other is provided with an intelligent driving domain control chip.

9. The vehicle-mounted domain control device according to any one of claims 1 to 7, characterized in that: The shielding structure is made of die-cast aluminum.

10. A vehicle, characterized in that: include: The vehicle-mounted domain control device according to any one of claims 1 to 9.

Images