Vehicle-mounted domain controller and vehicle
By placing the antenna module on the same plane in the vehicle domain controller and adjusting its angle and distance, combined with the method of increasing signal isolation components, the problem of degradability of manufacturability and drop performance caused by the improvement of antenna isolation in the prior art is solved, and efficient antenna performance improvement and product reliability improvement are achieved.
Patent Information
- Application Number
- CN202421737339.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-22
AI Technical Summary
While the existing on-board domain controllers improve antenna isolation, they lead to reduced manufacturability and reduced drop performance.
Increase signal isolation components to improve signal isolation by placing three sets of antenna modules on the same mounting plane and adjusting their relative angles and distances.
The antenna isolation is greater than 30db, which improves antenna performance and improves product manufacturability and reliability.
Smart Images
Figure CN222802103U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile electronics, in particular to a vehicle-mounted domain controller 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] The antenna performance requirement is that the isolation between multiple antennas on the same plane is greater than 30db. Conventional designs increase the antenna spacing or adjust the antenna position to place antenna modules on different planes of the controller. The antenna module is placed on the Z plane of the controller, and the antenna module needs to be placed on the Y plane of the controller to improve antenna isolation. This will reduce manufacturability and reduce the drop performance of the controller. Utility Model Content
[0004] In view of the above technical problems, the utility model provides a vehicle-mounted domain controller and a vehicle, which enhance antenna performance and improve product manufacturability and product reliability.
[0005] According to a first aspect of the utility model, a vehicle-mounted domain controller is provided, comprising a domain controller body, wherein a first mounting position, a second mounting position and a third mounting position are provided on the domain controller body, a first antenna module is fixed to the first mounting position, a second antenna module is fixed to the second mounting position, and a third antenna module is fixed to the third mounting position; the first antenna module, the second antenna module and the third antenna module are all fixed on the same mounting plane of the domain controller body; the second antenna module is spaced apart from the first antenna module and the third antenna module, respectively, and is orthogonally distributed on the mounting plane.
[0006] In an optional implementation, the length direction of the second antenna module is perpendicular to the length direction of the first antenna module and the length direction of the third antenna module.
[0007] In an optional implementation, a signal isolation component for increasing signal isolation is provided between the first antenna module, the second antenna module, and the third antenna module.
[0008] In an optional embodiment, the signal isolation component includes a first isolation component arranged between the first antenna module and the second antenna module, and a second isolation component arranged between the third antenna module and the first antenna module and the second antenna module; the first isolation component is connected to the second isolation component.
[0009] In an optional implementation, the height of the signal isolation component is not less than 6 mm.
[0010] In an optional embodiment, the distance between the upper end surface of the second antenna module and the mounting plane is greater than the distance between the upper end surface of the first antenna module and the mounting plane; and the distance between the upper end surface of the second antenna module and the mounting plane is greater than the distance between the upper end surface of the third antenna module and the mounting plane.
[0011] In an optional implementation, the height of the second installation position is greater than the height of the first installation position and the height of the third installation position.
[0012] In an optional implementation, the distance between the upper end surface of the second antenna module and the mounting plane is no more than 8 mm, and the distance between the upper end surface of the first antenna module and the upper end surface of the third antenna module and the mounting plane is at least 6 mm.
[0013] In an optional implementation, the first antenna module is a WIFI antenna module, the second antenna module is a Bluetooth antenna module, and the third antenna module is a reserved Bluetooth antenna module.
[0014] The second aspect of the present utility model provides a vehicle, comprising the vehicle-mounted domain controller described in the first aspect of the present utility model. The vehicle-mounted domain controller comprises a domain controller body, the domain controller body is provided with a first mounting position, a second mounting position, and a third mounting position, the first mounting position is fixed with a first antenna module, the second mounting position is fixed with a second antenna module, and the third mounting position is fixed with a third antenna module; the first antenna module, the second antenna module, and the third antenna module are all fixed on the mounting plane of the domain controller body; the second antenna module is spaced apart from the first antenna module and the third antenna module, respectively, and is orthogonally distributed on the mounting plane.
[0015] The utility model places three groups of antenna modules on the same installation plane, and improves the isolation between antennas by adjusting the relative angles of the three groups of antenna modules, thereby improving the manufacturability and reliability of the product.
[0016] The utility model also improves the isolation between antennas by adjusting the relative distances between the three groups of antenna modules, the installation positions and heights on the plane, and adding isolation components, so that the antenna performance reaches the best performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] 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.
[0018] Figure 1 It is a three-dimensional schematic diagram of a vehicle-mounted domain controller in an embodiment of the utility model.
[0019] Figure 2 It is a schematic diagram of the installation positions of three groups of antenna modules in an embodiment of the utility model.
[0020] Figure 3 It is a side view of the installation positions of three groups of antenna modules in the embodiment of the utility model.
[0021] Figure 4 It is an exploded view of the installation positions of three groups of antenna modules in the embodiment of the utility model.
[0022] Figure 5 This is a schematic diagram of an isolation component added in an embodiment of the utility model.
[0023] In-vehicle domain controller 100; domain controller body 101; first antenna module 1; second antenna module 2; third antenna module 3; first mounting position 11; second mounting position 21; third mounting position 31; first isolation component 4; second isolation component 5; signal isolation component 6. DETAILED DESCRIPTION
[0024] 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.
[0025] It should be understood that the terms "first", "second" and "third" in the claims, specifications and drawings of the present utility model are used to distinguish different objects rather than to describe a specific order. It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.
[0026] See also Figure 1 and Figure 2 , Figure 1 It is a three-dimensional schematic diagram of a vehicle-mounted domain controller in an embodiment of the utility model. Figure 2 The figure is a top view of a vehicle-mounted domain controller in an embodiment of the utility model.
[0027] The vehicle-mounted domain controller 100 provided by the utility model comprises a domain controller body 101. The domain controller body 101 comprises a PCBA board, and a plurality of antenna modules are arranged on the PCBA board.
[0028] For details, please refer to Figure 1 , Figure 2 and Figure 4 The shell of the domain controller body 101 is provided with a first mounting position 11, a second mounting position 21, and a third mounting position 31. The first mounting position 11 is fixed with a first antenna module 1, the second mounting position 21 is fixed with a second antenna module 2, and the third mounting position 31 is fixed with a third antenna module 3.
[0029] In some embodiments, the first antenna module 1 is a WIFI antenna module, the second antenna module 2 is a Bluetooth antenna module, the third antenna module 3 is a Bluetooth antenna module, and the third mounting position 31 is a reserved mounting position for mounting the third antenna module.
[0030] According to the antenna performance requirements of the product:
[0031] The 2.4G WiFi frequency band is: 2.4-2.5GHz; the 5G WiFi frequency band is: 5.15-5.85GHz; and the isolation between the two sets of antennas is ≥30%.
[0032] The utility model optimizes the installation angle, installation height, installation position and the addition of isolation components between antenna modules so that the three groups of antenna modules are located on the same installation plane, and the isolation degree of the three groups of antenna modules can be greater than 30db, thereby improving antenna performance, product manufacturability and product reliability.
[0033] Specifically, Figure 2 As shown, the first antenna module 1, the second antenna module 2 and the third antenna module 3 are all located on the installation plane of the domain controller body 101. The third antenna module 3 is spaced apart from the first antenna module 1 and the second antenna module 2 respectively and is orthogonally distributed on the installation plane.
[0034] exist Figure 2In the plane direction shown, the first antenna module 1 is located on the left, the second antenna module 2 is located on the right, the third antenna module 3 is located on the lower side of the second antenna module 2, and the first antenna module 1 is located on the left side of the second antenna module 2. The plane direction can be understood as the direction of the installation plane, and the plane direction includes the X direction and the Y direction. Taking the second antenna module 2 as a reference object, the third antenna module 3 is located on the lower side of the second antenna module 2 in the Y direction, and the first antenna module 1 is located on the left side of the second antenna module 2 in the X direction.
[0035] Depend on Figure 2 It can be seen that the first antenna module 1 is placed along the length direction, and the third antenna module 3 is placed along the length direction. The length direction of the second antenna module 2 is perpendicular to the length directions of the first antenna module 1 and the third antenna module 3. Then the extension line of the second antenna module 2 is orthogonal to the extension line of the first antenna module 1, and the extension line of the second antenna module 2 is orthogonal to the extension line of the third antenna module 3.
[0036] By adjusting the relative angles of the three groups of antenna modules in the above manner, signal interference between the antenna modules can be reduced and isolation can be increased.
[0037] Furthermore, the purpose of increasing isolation can be achieved by adjusting the distance between the three groups of antenna modules and the installation plane. Figure 3 As shown, the distance between the upper end surface of the second antenna module 2 and the mounting plane is greater than the distance between the upper end surface of the first antenna module 1 and the mounting plane; and the distance between the upper end surface of the second antenna module 2 and the mounting plane is greater than the distance between the upper end surface of the third antenna module 3 and the mounting plane.
[0038] In an optional embodiment, the height of the second installation position 12 is greater than the height of the first installation position 11 and the height of the third installation position 13. Therefore, the second antenna module 2 installed on the first installation position 12 is higher than the first antenna module 1 and the third antenna module 3, so that the three antenna modules are staggered in space to reduce the impact on each other.
[0039] Specifically, the distance between the upper end surface of the second antenna module 2 and the mounting plane is not higher than 8 mm, such as 8 mm, 7 mm, or 6 mm. The distance between the upper end surface of the first antenna module 1 and the upper end surface of the third antenna module 3 and the mounting plane is at least 6 mm, such as 6 mm, 7 mm, or 8 mm. Different mounting distances and heights can reduce mutual interference between the three antenna modules.
[0040] Combination Figure 4It can be seen that the second installation position 21 of the second antenna module 2 is higher than the first installation position 11 and the third installation position 31 .
[0041] In order to increase the isolation between the three groups of antenna modules, the utility model sets a signal isolation component 6 for increasing the signal isolation between the three groups of antenna modules.
[0042] like Figure 3 As shown, the first antenna module 1 , the second antenna module 2 , and the third antenna module 3 are each provided with a signal isolation component 6 .
[0043] Specifically, Figure 5 As shown, the signal isolation component 6 includes a first isolation component 4 arranged between the first antenna module 1 and the second antenna module 2, and a second isolation component 5 arranged between the third antenna module 3 and the first antenna module 1 and the second antenna module 2; the first isolation component 4 is connected to the second isolation component 5.
[0044] The first isolation component 4 and the second isolation component 5 are plate-shaped structures, generally made of metal. The height of the signal isolation component 6 is not less than 6 mm; thus, it can be greater than the height of the antenna module to achieve the purpose of isolation. It is adapted to the distance between the first antenna module 1 and the third antenna module 3 and the installation plane to achieve the purpose of isolating signal interference and meeting the isolation degree.
[0045] The utility model also provides a vehicle, which 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. The vehicle includes the above-mentioned vehicle-mounted domain controller. For the vehicle-mounted domain controller, reference can be made to the above-mentioned description of the vehicle-mounted domain controller, which will not be repeated here.
[0046] 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 controller, characterized in that: The invention comprises a domain controller body, wherein a first mounting position, a second mounting position and a third mounting position are provided on the domain controller body; a first antenna module is fixed to the first mounting position, a second antenna module is fixed to the second mounting position, and a third antenna module is fixed to the third mounting position; the first antenna module, the second antenna module and the third antenna module are all fixed on the same mounting plane of the domain controller body; the second antenna module is spaced apart from the first antenna module and the third antenna module respectively and is orthogonally distributed on the mounting plane.
2. The vehicle-mounted domain controller according to claim 1, characterized in that: The length direction of the second antenna module is perpendicular to the length direction of the first antenna module and the length direction of the third antenna module.
3. The vehicle-mounted domain controller according to claim 2, characterized in that: The first antenna module is located on the left side of the second antenna module, and the third antenna module is located on the lower side of the second antenna module.
4. The vehicle-mounted domain controller according to claim 1, characterized in that: A signal isolation component for increasing signal isolation is provided between the first antenna module, the second antenna module and the third antenna module.
5. The vehicle-mounted domain controller according to claim 4, characterized in that: The signal isolation component includes a first isolation component arranged between the first antenna module and the second antenna module, and a second isolation component arranged between the third antenna module and the first antenna module and the second antenna module; the first isolation component is connected to the second isolation component.
6. The vehicle-mounted domain controller according to claim 5, characterized in that: The height of the signal isolation component is not less than 6 mm.
7. The vehicle-mounted domain controller according to claim 1, characterized in that: The distance between the upper end surface of the second antenna module and the mounting plane is greater than the distance between the upper end surface of the first antenna module and the mounting plane; and the distance between the upper end surface of the second antenna module and the mounting plane is greater than the distance between the upper end surface of the third antenna module and the mounting plane.
8. The vehicle-mounted domain controller according to claim 1, characterized in that: The height of the second installation position is greater than the height of the first installation position and the height of the third installation position.
9. The vehicle-mounted domain controller according to claim 7 or 8, characterized in that: The distance between the upper end surface of the second antenna module and the mounting plane is no more than 8 mm, and the distance between the upper end surface of the first antenna module and the upper end surface of the third antenna module and the mounting plane is at least 6 mm.
10. The vehicle-mounted domain controller according to claim 1, characterized in that: The first antenna module is a WIFI antenna module, the second antenna module is a Bluetooth antenna module, and the third antenna module is a reserved Bluetooth antenna module.
11. A vehicle, characterized in that: include: The vehicle-mounted domain controller according to any one of claims 1 to 10.