A vehicle-mounted case for an L4 level autonomous vehicle
By adopting a modular design and an air-cooled heat dissipation system, the problem of insufficient hardware integration in the vehicle chassis is solved, improving system performance and space utilization, reducing costs, and ensuring the heat dissipation effect of the equipment under high load operation, which facilitates maintenance and upgrades.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SHENGDATONG INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-26
AI Technical Summary
The insufficient hardware integration of existing vehicle chassis results in loose connections and cooperation between components, limiting system performance, low space utilization, and increasing system complexity and cost.
The modular design allows for the independent packaging of battery modules, terminal modules, network converter modules, radar modules, boost modules, etc., and heat dissipation is achieved through an air-cooled heat dissipation system. Optimized component connections and layout improve hardware integration and reduce the number of cables and connectors.
It improves system flexibility and scalability, reduces chassis size and weight, reduces system complexity and cost, while ensuring good heat dissipation performance under high load operation, and facilitates maintenance and upgrades.
Smart Images

Figure CN224419075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle chassis technology, specifically a vehicle chassis for L4 level autonomous vehicles. Background Technology
[0002] Level 4 autonomous driving technology falls under the category of highly automated driving. Level 4 autonomous driving systems can execute all dynamic driving tasks (DDT) within their Design Operating Domain (ODD) without driver monitoring or intervention. This level of autonomous driving requires vehicles to possess high-precision environmental perception, path planning, and vehicle control capabilities to achieve safe and efficient autonomous driving. The onboard chassis of a Level 4 autonomous vehicle needs to integrate various hardware components, including high-performance computing units, sensor interfaces, communication modules, and power management systems. These components need to work closely together to achieve efficient data processing and transmission. Since autonomous vehicles need to operate in various complex environments, the onboard chassis must possess excellent stability and reliability. This requires the hardware components within the chassis to undergo rigorous testing and verification to ensure normal operation even under extreme conditions.
[0003] Current automotive chassis designs suffer from insufficient hardware integration, with loose connections and coordination between components. This limits overall system performance and can lead to inefficient use of internal space, increasing system complexity and cost. This invention optimizes the connections and coordination between components to improve the hardware integration of the automotive chassis, thereby enhancing overall system performance and reducing costs. Therefore, we need an automotive chassis for Level 4 autonomous vehicles. Utility Model Content
[0004] The purpose of this invention is to provide an onboard unit for L4 level autonomous vehicles to solve the existing problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an on-board unit for a Class L autonomous vehicle, comprising a base, a housing fixedly connected to the top of the base, a fan disposed on one side of the housing, a filter assembly disposed on one side of the housing, and a housing assembly disposed inside the housing; the housing assembly includes a battery module, a network converter module disposed on one side of the battery module, a terminal module disposed on one side of the network converter module, a radar module fixedly connected inside the housing, and a boost module disposed inside the housing.
[0006] Preferably, the filter assembly includes a side plate, a bolt is fixedly connected to one side of the side plate, a nut is provided on the outer wall of the bolt, an mounting sleeve is fixedly connected to one side of the side plate, a spring is fixedly connected inside the mounting sleeve, an mounting rod is provided at one end of the spring, a filter is fixedly connected to one side of the mounting rod, and a positioning hole is provided inside the filter.
[0007] Preferably, the side plate is fixed to the filter screen by bolts, and one end of the bolt passes through the filter screen and is connected to the nut.
[0008] Preferably, the mounting sleeve forms an elastic structure with the mounting rod via a spring, and the spring is disposed between the mounting sleeve and the mounting rod.
[0009] Preferably, the filter screen and the mounting rods form a fixed structure, and there are multiple mounting rods on the filter screen, with all multiple mounting rods fixed to one side of the filter screen.
[0010] Preferably, the housing contains a network converter module and a battery module, and the battery module and the network converter module are fixed together by a bracket.
[0011] Preferably, the radar module and the boost module are located at the bottom inside the housing.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This is an onboard unit for L4 level autonomous vehicles.
[0013] (1) By adopting a modular design in the vehicle chassis, each functional module, such as battery module, terminal module, network converter module, radar module, and boost module, is independently packaged, which facilitates maintenance and upgrades. The modular design also improves the system's flexibility and scalability. The vehicle chassis integrates multi-functional module hardware and adopts a compact layout, making full use of space and reducing chassis volume and weight. By optimizing the connection and cooperation between components, the hardware integration is improved, the number of cables and connectors is reduced, and the system complexity and cost are reduced. The chassis can be cooled by a fan. The air-cooled cooling system ensures that the equipment inside the chassis can maintain good heat dissipation performance under long-term high-load operation.
[0014] (2) By using the air-cooled heat dissipation system, the equipment inside the box can maintain good heat dissipation performance under long-term high-load operation. At the same time, external air enters the box through the filter screen. When the nut is loosened and disassembled, the nut can be released from the positioning of the filter screen. At this time, the filter screen can be pushed out of the mounting sleeve under the support of the spring. This facilitates the convenient disassembly and replacement of the filter screen and meets people's daily use needs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0016] Figure 2 This is a schematic diagram of the housing and fan structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the side plate and bolt structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the filter screen and mounting rod structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the chassis assembly structure of this utility model.
[0020] In the diagram: 1. Base; 2. Housing; 3. Fan; 4. Filter assembly; 401. Side plate; 402. Bolt; 403. Nut; 404. Mounting sleeve; 405. Spring; 406. Filter; 407. Positioning hole; 408. Mounting rod; 5. Chassis assembly; 501. Battery module; 502. Terminal module; 503. Network converter module; 504. Radar module; 505. Boost module. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] This utility model embodiment provides an onboard chassis for L4 level autonomous vehicles, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a base 1, with a housing 2 fixedly connected to the top of the base 1. A fan 3 is installed on one side of the housing 2, and a filter assembly 4 is installed on another side of the housing 2. A chassis assembly 5 is installed inside the housing 2. The chassis assembly 5 includes a battery module 501, and a network converter module 503 is installed on one side of the battery module 501. The network converter module 503 and the battery module 501 are installed inside the housing 2 and are fixed together by a bracket. The battery module 501 can be used to power the equipment inside the housing 2, and the network converter module 503 provides power to the equipment inside the housing 2. It has multiple sensor interfaces, including data interfaces for sensors such as ultrasonic radar. The sensor interface module supports high-speed data transmission and synchronous processing, ensuring that data from multiple sensors can be fused and processed in real time. A terminal module 502 is set on one side of the network converter module 503. A radar module 504 is fixedly connected inside the housing 2. A boost module 505 is set inside the housing 2. The radar module 504 and the boost module 505 are located at the bottom of the inner side of the housing 2. By setting up the radar module 504, the distance, speed, and orientation of the target object can be accurately measured, providing information for related fields. Providing precise data support, in the field of autonomous driving, the radar module 504 can monitor obstacles and pedestrians around the vehicle in real time, ensuring the safety and stability of vehicle operation. The boost module 505, with its excellent load characteristics, can operate accurately, stably, and without interference. Even under large load variations, it can maintain stable output voltage, ensuring normal operation of the equipment. Through a modular design within the vehicle housing 2, various functional modules, including the battery module 501, terminal module 502, network converter module 503, radar module 504, and boost module, are integrated. The 505 module and other components are independently packaged for easy maintenance and upgrades. The modular design also improves the system's flexibility and scalability, allowing for customization according to different vehicle models and autonomous driving requirements. The vehicle chassis integrates multi-functional modular hardware with a compact layout, making full use of space and reducing the chassis volume and weight. By optimizing the connection and cooperation between components, the hardware integration is improved, reducing the number of cables and connectors, thus reducing system complexity and cost. The chassis 2 is cooled by a fan 3, using an air-cooled cooling system to ensure that the equipment inside the chassis 2 can maintain good heat dissipation performance even under long-term high-load operation.
[0023] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the filter assembly 4 includes a side plate 401. A bolt 402 is fixedly connected to one side of the side plate 401, and a nut 403 is provided on the outer wall of the bolt 402. A mounting sleeve 404 is fixedly connected to one side of the side plate 401, and a spring 405 is fixedly connected inside the mounting sleeve 404. A mounting rod 408 is provided at one end of the spring 405. The filter 406 and the mounting rod 408 form a fixed structure, and there are multiple mounting rods 408 on the filter 406, and all multiple mounting rods 408 are fixed to one side of the filter 406 to strengthen it. The connection between the filter screen 406 and the mounting rod 408 is improved, allowing the multiple mounting rods 408 on the filter screen 406 to be securely fixed within the mounting sleeve 404 for installation and positioning. The mounting sleeve 404 and the mounting rods 408 form an elastic structure via a spring 405, with the spring 405 positioned between the mounting sleeve 404 and the mounting rods 408, strengthening the connection between them. This allows the spring 405 to support and rebound the mounting rods 408 under the support of the mounting sleeve 404. A filter screen 406 is fixedly connected to one side of the side plate 401. The side plate 401 is fixed to the filter screen 406 via bolts 402, with one end of the bolt 402 passing through the filter screen 406 and connecting to a nut 403. This facilitates the installation of the bolt 402, allowing the filter screen 406 to be installed on one side of the side plate 401. The nut 403 secures the installation, improving the installation effect of the filter screen 406 and facilitating its disassembly and replacement. The filter screen 406 has a positioning hole 407 inside. The air-cooled heat dissipation system ensures that the equipment inside the housing 2 can maintain good heat dissipation performance even under long-term high-load operation. At the same time, external air enters the housing 2 through the filter screen 406. When the nut 403 is loosened and disassembled, the nut 403 can be released from the positioning of the filter screen 406. At this time, the filter screen 406 can be pushed out of the mounting sleeve 404 under the support and rebound of the spring 405. This facilitates the easy disassembly and replacement of the filter screen 406, meeting people's daily use needs.
[0024] Working Principle: During use, the modular design within the vehicle chassis 2 allows for the independent encapsulation of various functional modules, such as the battery module 501, terminal module 502, network converter module 503, radar module 504, and boost module 505. This facilitates maintenance and upgrades. The modular design also enhances the system's flexibility and scalability, allowing for customization based on different vehicle models and autonomous driving requirements. The vehicle chassis integrates multi-functional modular hardware with a compact layout, maximizing space utilization and reducing the volume and weight of the chassis 2. By optimizing the connections and coordination between components, hardware integration is improved, reducing the number of cables and connectors and lowering costs. Due to system complexity and cost, the fan 3 inside the housing 2 can dissipate heat, using an air-cooled heat dissipation system to ensure that the equipment inside the housing 2 can maintain good heat dissipation performance even under long-term high-load operation. At the same time, external air enters the housing 2 through the filter 406. When the nut 403 is loosened and disassembled, it can be released from the positioning of the filter 406. At this time, the filter 406 can be pushed out of the mounting sleeve 404 under the support and rebound of the spring 405. This facilitates the easy disassembly and replacement of the filter 406, meeting people's daily use needs.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An onboard chassis for a Level 4 autonomous vehicle, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to the box (2), a fan (3) is provided on one side of the box (2), a filter assembly (4) is provided on one side of the box (2), and a box assembly (5) is provided inside the box (2). The chassis assembly (5) includes a battery module (501), a network converter module (503) is provided on one side of the battery module (501), a terminal module (502) is provided on one side of the network converter module (503), a radar module (504) is fixedly connected inside the chassis (2), and a boost module (505) is provided inside the chassis (2).
2. The on-board chassis for a Level 4 autonomous vehicle according to claim 1, characterized in that: The filter assembly (4) includes a side plate (401), a bolt (402) is fixedly connected to one side of the side plate (401), a nut (403) is provided on the outer wall of the bolt (402), an mounting sleeve (404) is fixedly connected to one side of the side plate (401), a spring (405) is fixedly connected inside the mounting sleeve (404), an mounting rod (408) is provided at one end of the spring (405), a filter (406) is fixedly connected to one side of the mounting rod (408), and a positioning hole (407) is provided inside the filter (406).
3. The on-board chassis for a Level 4 autonomous vehicle according to claim 2, characterized in that: The side plate (401) is fixed to the filter screen (406) by bolts (402), and one end of the bolt (402) passes through the filter screen (406) and is connected to the nut (403).
4. The on-board chassis for a Level 4 autonomous vehicle according to claim 2, characterized in that: The mounting sleeve (404) forms an elastic structure with the mounting rod (408) via a spring (405), and the spring (405) is disposed between the mounting sleeve (404) and the mounting rod (408).
5. The on-board chassis for a Level 4 autonomous vehicle according to claim 2, characterized in that: The filter screen (406) and the mounting rod (408) form a fixed structure, and there are multiple mounting rods (408) on the filter screen (406), and all the mounting rods (408) are fixed on one side of the filter screen (406).
6. The on-board chassis for a Level 4 autonomous vehicle according to claim 1, characterized in that: The housing (2) contains a network converter module (503) and a battery module (501), and the battery module (501) and the network converter module (503) are fixed together by a bracket.
7. The on-board chassis for a Level 4 autonomous vehicle according to claim 1, characterized in that: The radar module (504) and the boost module (505) are located at the bottom of the housing (2).