Automatic driving drive-by-wire chassis

Abstract

The utility model provides an automatic driving drive-by-wire chassis. The automatic driving drive-by-wire chassis comprises a frame, and a driving system, a transmission system, a power supply system, a braking system, a steering system and a stable control system which are arranged on the frame, the frame comprises two longitudinal beams which are arranged side by side and a plurality of first cross beams which are connected between the two longitudinal beams and are arranged side by side; the heights of the longitudinal beams are always consistent in the length direction of the longitudinal beams; the installation heights of the driving system, the transmission system, the power supply system and other systems do not exceed the upper surface of the longitudinal beam. According to the scheme, the height of the longitudinal beam is set to be consistent all the time in the length direction of the longitudinal beam, and the installation heights of the driving system, the transmission system, the power supply system, the braking system, the steering system and the stability control system do not exceed the upper surface of the longitudinal beam; the whole upper surface of the automatic drive-by-wire chassis is a horizontal plane, so that the automatic drive-by-wire chassis is convenient to refit and use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle chassis technology, and in particular to an autonomous driving drive-by-wire chassis. Background Technology

[0002] A drive-by-wire chassis is a technology that uses electronic signals to replace traditional mechanical and hydraulic control systems, enabling control of various functions of a vehicle chassis. It serves as a bridge between autonomous driving and new energy vehicles, and is a key component for achieving driverless operation. Many existing pure electric vehicle chassis already possess some drive-by-wire capabilities, while drive-by-wire steering and brake-by-wire are the most crucial products for the execution of autonomous driving.

[0003] Patent CN116788359A discloses a low-cost, fully drive-by-wire pure electric vehicle chassis for remote-controlled driving. The fully drive-by-wire pure electric chassis includes a chassis domain controller, a chassis frame, a suspension system, a drive-by-wire system, a steering-by-wire system, a braking-by-wire system, and an electrical system. In this patent, the chassis frame has a front-low, rear-high design, resulting in a non-flat upper surface, which makes modification and use inconvenient. Utility Model Content

[0004] Based on the problems existing in the prior art, this utility model aims to solve the technical problem that the chassis frame of the existing low-cost fully drive-by-wire pure electric vehicle chassis with remote control driving has an overall design that is low in the front and high in the rear, so that the upper surface of the chassis is not a flat surface, which makes it inconvenient to modify and use.

[0005] This utility model provides an autonomous driving drive-by-wire chassis, which includes a frame and a driving system, a transmission system, a power system, a braking system, a steering system and a stability control system mounted on the frame;

[0006] The frame includes two longitudinal beams arranged side by side and multiple first crossbeams arranged side by side connecting the two longitudinal beams; the height of the longitudinal beams is always consistent along their length.

[0007] The installation height of the driving system, the transmission system, the power system, the braking system, the steering system, and the stability control system shall not exceed the upper surface of the longitudinal beam.

[0008] According to one embodiment of the present invention, the driving system includes a front wheel mechanism and a rear wheel mechanism respectively installed at the front and rear ends of the vehicle frame;

[0009] The braking system, the steering system, and the stability control system are all located on the vehicle frame near the front wheel mechanism.

[0010] According to one embodiment of the present invention, the transmission system includes a motor and a motor controller;

[0011] The power system includes a battery pack, an on-board charger, and a DC-DC converter;

[0012] The motor, the motor controller, the on-board charger, and the DC-DC converter are all located on the vehicle frame near the rear wheel mechanism; the battery pack is located on the vehicle frame between the front wheel mechanism and the rear wheel mechanism.

[0013] According to one embodiment of the present invention, the front ends of the two longitudinal beams are bent toward each other so that the distance between the front ends of the two longitudinal beams is less than the distance between the rear ends; the front wheel mechanism 21 is installed at the front end of the longitudinal beams.

[0014] According to one embodiment of the present invention, the frame further includes two side beams and multiple second crossbeams. The two side beams are respectively disposed on the outside of the two longitudinal beams, and the side beams are fixedly connected to the longitudinal beams on the same side by multiple second crossbeams.

[0015] According to one embodiment of the present invention, the autonomous driving drive-by-wire chassis further includes a toolbox, which is fixedly disposed in the hollow space formed between two adjacent second crossbeams.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides an autonomous driving drive-by-wire chassis. By setting the height of the longitudinal beam to be consistent along its length, and ensuring that the installation height of the driving system, transmission system, power system, braking system, steering system, and stability control system does not exceed the upper surface of the longitudinal beam, the upper surface of the autonomous driving drive-by-wire chassis is made to be a horizontal plane, thus facilitating its modification and use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of an autonomous driving drive-by-wire chassis provided in an embodiment of this utility model;

[0020] Figure 2 This is a front view of an autonomous driving drive-by-wire chassis provided in an embodiment of this utility model;

[0021] Reference numerals: 1. Frame; 11. Longitudinal beam; 12. First crossbeam; 13. Side beam; 14. Second crossbeam; 2. Running system; 21. Front wheel mechanism; 22. Rear wheel mechanism; 3. Transmission system; 31. Motor; 32. Motor controller; 4. Power system; 41. Battery pack; 42. On-board charger; 43. DC-DC converter; 5. Braking system; 6. Steering system; 7. Stability control system; 8. Toolbox. Detailed Implementation

[0022] The following description of the embodiments is with reference to the accompanying illustrations, which illustrate specific embodiments in which the present invention can be implemented.

[0023] This utility model provides an autonomous driving drive-by-wire chassis, the structure of which is as follows: Figure 1 and Figure 2 As shown, the vehicle includes a frame 1 and a running system 2, a transmission system 3, a power system 4, a braking system 5, a steering system 6, and a stability control system 7 mounted on the frame 1. The frame 1 includes two longitudinal beams 11 arranged side by side and multiple first crossbeams 12 arranged side by side connecting the two longitudinal beams 11. The height of the longitudinal beams 11 is always consistent along their length.

[0024] The installation height of the driving system 2, the transmission system 3, the power system 4, the braking system 5, the steering system 6, and the stability control system 7 does not exceed the upper surface of the longitudinal beam 11.

[0025] It is easy to understand that by setting the height of the longitudinal beam 11 to be consistent along its length, and setting the installation height of the driving system 2, the transmission system 3, the power system 4, the braking system 5, the steering system 6 and the stability control system 7 to not exceed the upper surface of the longitudinal beam, the upper surface of the autonomous driving drive-by-wire chassis is made to be a horizontal plane, thus facilitating its modification and use.

[0026] Please continue to refer to Figure 1Specifically, the driving system 2 includes a front wheel mechanism 21 and a rear wheel mechanism 22 respectively installed at the front and rear ends of the frame 1; the braking system 5, the steering system 6, and the stability control system 7 are all located on the frame 1 near the front wheel mechanism 21. More specifically, the braking system 5 is an electro-hydraulic braking system (EHB), the steering system 6 includes a steering gear, and the stability control system 7 is an electronic stability control (ESC) system. EHB manages brake hydraulic pressure through an electronic control system to achieve braking, offering advantages such as fast response, high integration, and high control precision. It can be integrated with the ESC system to achieve more comprehensive vehicle stability control. The ESC system monitors vehicle status through sensors, providing stability control and preventing loss of control in emergency situations. Since EHB and ESC technologies are existing technologies, their specific working principles will not be elaborated in this solution.

[0027] In some embodiments of this utility model, the autonomous driving drive-by-wire chassis has a rear-mounted, rear-wheel-drive structure. The transmission system 3 includes a motor 31 and a motor controller 32. Specifically, the motor controller 32 can be an MCU. The power system 4 includes a battery pack 41, an on-board charger 42, and a DC-DC converter 43. The motor 31, the motor controller 32, the on-board charger 42, and the DC-DC converter 43 are all located on the frame 1 near the rear wheel mechanism 22. The battery pack 41 is located on the frame 1 between the front wheel mechanism 21 and the rear wheel mechanism 22.

[0028] It is easy to understand that, given the rear-engine, rear-wheel-drive layout of the autonomous driving drive-by-wire chassis, by placing the motor controller 32, the on-board charger 42, and the DC-DC converter 43 on the frame 1 near the rear wheel mechanism 22, the amount of wiring harness used inside the transmission system 3 can be reduced, thus facilitating the wiring layout. Furthermore, since there is a large space between the front wheel mechanism 21 and the rear wheel mechanism 22, by installing the battery pack 41 between the front wheel mechanism 21 and the rear wheel mechanism 22, the battery pack 41 can have a larger longitudinal dimension to ensure the driving range.

[0029] Furthermore, the frame 1 also includes two side beams 13 and multiple second crossbeams 14. The two side beams 13 are respectively disposed on the outside of the two longitudinal beams 11, and the side beams 13 and the longitudinal beams 11 on the same side are fixedly connected by multiple second crossbeams 14.

[0030] It is easy to understand that by setting the side beams 13 on the outer sides of the two longitudinal beams 11 respectively, and connecting the side beams 13 to the longitudinal beams 11 on the same side through multiple second cross beams 14, the horizontal dimension of the autonomous driving drive-by-wire chassis can be increased, thereby enabling the autonomous driving drive-by-wire chassis to have a larger retrofit size.

[0031] Furthermore, the front ends of the two longitudinal beams 11 are bent toward each other so that the distance between the front ends of the two longitudinal beams 11 is less than the distance between the rear ends; the front wheel mechanism 21 is mounted on the front end of the longitudinal beams 11.

[0032] It is easy to understand that, since the front wheel mechanism 21 is a steering wheel, by designing the front ends of the two longitudinal beams 11 to bend towards each other so that the distance between the front ends of the two longitudinal beams 11 is smaller than the distance between the rear ends, when the front wheel mechanism 21 is installed at the front end of the longitudinal beams 11, the front wheel mechanism 21 can have a larger steering envelope without increasing the width of the chassis.

[0033] In some embodiments of this utility model, the autonomous driving drive-by-wire chassis further includes a toolbox 8, which is fixedly disposed in the hollow space formed between two adjacent second crossbeams 14.

[0034] It is easy to understand that the toolbox 8 can be filled with some vehicle daily maintenance tools (such as wrenches) and cleaning tools (such as cleaning agents and rags). By fixing the toolbox 8 in the hollow space between two adjacent second crossbeams 14, the toolbox 8 can avoid occupying too much space on the autonomous driving drive-by-wire chassis, which is also conducive to the modification of the autonomous driving drive-by-wire chassis.

[0035] Additionally, it should be noted that by setting the frame 1 into a frame structure composed of the longitudinal beam 11, the first crossbeam 12, the side beam 13, and the second crossbeam 14, the driving system 2, the transmission system 3, and other structures can be installed in the hollows of the frame 1. Of course, when assembling the frame 1, the structure of the frame 1 can be designed according to the installation position and dimensions of the driving system 2, the transmission system 3, and other structures to make the overall structure of the autonomous driving drive-by-wire chassis more reasonable.

[0036] In summary, in the autonomous driving drive-by-wire chassis provided by this utility model, the height of the longitudinal beam 11 is set to be consistent along its length direction, and the installation height of the driving system 2, the transmission system 3, the power system 4, the braking system 5, the steering system 6, and the stability control system 7 are all set to not exceed the upper surface of the longitudinal beam, so that the upper surface of the autonomous driving drive-by-wire chassis is a horizontal plane, which facilitates its modification and use. In addition, by installing the driving system 2, the transmission system 3, and the power system 4 in the hollow of the frame structure of the vehicle frame 1, the space occupied by the driving system 2, the transmission system 3, and the power system 4 on the vehicle frame 1 can be reduced, which further facilitates the modification of the autonomous driving drive-by-wire chassis.

[0037] It should be noted that although the present invention has been disclosed above with specific embodiments, the above embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. An autonomous driving drive-by-wire chassis, comprising a frame (1) and a driving system (2), a transmission system (3), a power system (4), a braking system (5), a steering system (6), and a stability control system (7) mounted on the frame (1); characterized in that, The frame (1) includes two parallel longitudinal beams (11) and multiple parallel first crossbeams (12) connecting the two longitudinal beams (11); the height of the longitudinal beams (11) is always consistent along its length. The installation height of the driving system (2), the transmission system (3), the power system (4), the braking system (5), the steering system (6), and the stability control system (7) does not exceed the upper surface of the longitudinal beam (11).

2. The autonomous driving drive-by-wire chassis according to claim 1, characterized in that, The driving system (2) includes a front wheel mechanism (21) and a rear wheel mechanism (22) respectively installed at the front and rear ends of the frame (1); The braking system (5), the steering system (6) and the stability control system (7) are all located on the frame (1) near the front wheel mechanism (21).

3. The autonomous driving drive-by-wire chassis according to claim 2, characterized in that, The transmission system (3) includes a motor (31) and a motor controller (32); The power system (4) includes a battery pack (41), an on-board charger (42), and a DC-DC converter (43); The motor (31), the motor controller (32), the on-board charger (42), and the DC-DC converter (43) are all located on the frame (1) near the rear wheel mechanism (22); the battery pack (41) is located on the frame (1) between the front wheel mechanism (21) and the rear wheel mechanism (22).

4. The autonomous driving drive-by-wire chassis according to claim 2, characterized in that, The front ends of the two longitudinal beams (11) are bent toward each other so that the distance between the front ends of the two longitudinal beams (11) is less than the distance between the rear ends; the front wheel mechanism (21) is installed at the front end of the longitudinal beams (11).

5. The autonomous driving drive-by-wire chassis according to claim 1, characterized in that, The frame (1) also includes two side beams (13) and multiple second crossbeams (14). The two side beams (13) are respectively disposed on the outside of the two longitudinal beams (11), and the side beams (13) are fixedly connected to the longitudinal beams (11) on the same side through multiple second crossbeams (14).

6. The autonomous driving drive-by-wire chassis according to claim 5, characterized in that, It also includes a toolbox (8), which is fixedly installed in the hollow space formed between two adjacent second crossbeams (14).

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