A corner module system and a modular expandable chassis

Abstract

The application is suitable for the technical field of automobile chassis, and provides an angle module system and a modular expandable chassis.The angle module system adopts unequal-length double wishbone suspension, and has good geometric kinematics characteristics.The kingpin offset is reasonably controlled through the design of the steering knuckle part.The efficient integration of the running unit and the frame structure is realized through the angle module support, the number of connection points of the angle module system and the chassis is reduced, and the serialization, integration and modularization of the chassis system are beneficial.In addition, the modular expandable chassis adopts modular design, and the number of shafts can be flexibly configured according to the carrying demand.

Description

Technical Field

[0001] This invention belongs to the field of automotive chassis technology, and particularly relates to a corner module system and a modular scalable chassis. Background Technology

[0002] With the development of vehicle electrification and intelligence, vehicle chassis are evolving from fuel vehicle chassis to pure electric vehicle chassis. Distributed electric drive chassis with in-wheel motors as the power source have the characteristics of high controllability and short transmission chain, which can give full play to the potential of vehicle dynamics control, improve driving efficiency, and simplify chassis structure.

[0003] The chassis based on a modular distributed electric drive architecture breaks through the traditional vehicle system architecture division method, and has the typical characteristics of physical scalability and functional definition. Its key feature is the use of a composite functional module integrating drive, braking, steering, and suspension systems as the smallest driving unit. Compared with existing distributed drive chassis structures, the composite functional module eliminates mechanical connections such as steering tie rods and stabilizer bars, releasing more degrees of freedom in the vehicle chassis's motion, and possessing the technical advantages of high functional cohesion and low system coupling. The emergence of this fully decoupled new chassis configuration brings the possibility of broadening the boundaries of vehicle dynamics and realizing multi-unit on-demand expansion based on transportation tasks.

[0004] However, the high degree of integration of chassis functions increases the complexity of the wheel-side structure of the driving unit, making the integrated design of chassis functional elements a key aspect of configuration research. Summary of the Invention

[0005] The purpose of this invention is to provide a corner module system and a modular scalable chassis, which aims to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: a corner module system, the corner module system comprising: a hub motor, a braking system, a steering knuckle assembly, a kingpin steering gear, an upper outer control arm, an upper inner control arm assembly, a lower control arm assembly, a suspension actuator, and a corner module bracket;

[0007] The braking system is mounted on one side of the hub motor, forming a modular structure; the steering knuckle assembly is connected to the hub motor; one end of the lower control arm assembly is hinged to the lower end of the steering knuckle assembly, and the other end is hinged to the lower end of the corner module bracket; one side of the upper outer control arm is connected to the output end of the kingpin steering gear, and the other side is connected to the upper end of the steering knuckle assembly, so that the kingpin steering gear drives the wheel to steer by applying torque to the steering knuckle assembly; one end of the upper inner control arm assembly is hinged to the upper outer control arm, and the other end is hinged to the upper end of the corner module bracket; one end of the suspension actuator is hinged to the lower control arm assembly, and the other end is mounted on the top of the corner module bracket; the corner module bracket integrates the above structures and is connected to at least one of the vehicle body and the frame.

[0008] In a further technical solution, the suspension structure of the corner module system adopts an unequal length double wishbone configuration, and the upper inner control arm assembly, upper outer control arm, steering knuckle assembly, and lower control arm assembly together with the vehicle frame form a closed loop of the suspension mechanism;

[0009] The upper inner control arm assembly includes an upper inner control arm body and a first bushing; the first bushing is arranged in a first mounting hole of the upper inner control arm body and is hinged to the corner module bracket, that is, the upper inner control arm assembly can rotate relative to the corner module bracket; in addition, the upper inner control arm body is also hinged to the upper outer control arm through a first lug.

[0010] The kingpin steering system includes a steering transmission mechanism and a steering drive motor; wherein, the housing of the steering transmission mechanism is connected to the upper outer control arm, the output end of the steering drive motor is connected to the steering transmission mechanism, and the output end of the steering transmission mechanism is connected to the steering knuckle assembly;

[0011] The lower control arm assembly includes a lower control arm body and a second bushing; one end of the lower control arm body is symmetrically provided with two second mounting holes, and a second bushing is arranged in the second mounting hole and hinged to the corner module bracket; the other end of the lower control arm body is hinged to the lower end of the steering knuckle assembly through a ball joint; the middle part of the lower control arm body is hinged to the third mounting hole at the bottom of the suspension actuator through a second lug.

[0012] The suspension actuator includes an elastic element, a damper, and a third mounting base; the suspension actuator is hinged to the lower control arm body through a third mounting hole at the bottom of the third mounting base, and the top of the suspension actuator is connected to the corner module bracket through the third mounting base.

[0013] In a further technical solution, the damper is a continuously variable damper, a magnetorheological damper, an electromagnetic damper, or a passive hydraulic damper; the elastic element is a single-cavity air spring, a double-cavity air spring, a hydropneumatic spring, or a helical spring.

[0014] A further technical solution is provided in which the hub motor is provided with a first mounting seat and a hub bearing spline; wherein, the first mounting seat is used to connect with the steering knuckle assembly, and is provided with a first threaded hole for mating with fasteners; the hub bearing spline is a mechanical interface reserved for the half-shaft transmission method;

[0015] The braking system includes a brake disc and a brake caliper; wherein, the brake caliper is provided with a first through hole for connection to the steering knuckle assembly via fasteners.

[0016] In a further technical solution, the steering knuckle assembly includes a steering knuckle adapter and a steering knuckle body;

[0017] One end of the steering knuckle adapter is connected to the first mounting bracket on the hub motor, and the other end is connected to the steering knuckle body. It is also connected to the brake caliper body through a third through hole. In addition, the steering knuckle adapter is provided with a first stepped hole, a second threaded hole, and a second through hole.

[0018] The steering knuckle body adopts a high-arc design; the top of the steering knuckle body is provided with a first flange structure, the bottom of the steering knuckle body is provided with a second mounting seat, and the steering knuckle body is also provided with a second stepped hole; wherein, the first flange structure is used to install the output end of the steering transmission mechanism; the second stepped hole is connected to the second threaded hole of the steering knuckle adapter through a fastener; the second mounting seat is connected to the ball joint on the lower control arm body.

[0019] In a further technical solution, the corner module bracket includes a fourth mounting base, an upper connecting structure, a middle connecting structure, and a lower connecting structure;

[0020] The upper connecting structure is mainly used for hinged connection of the upper inner control arm assembly, including a first support structure, a third lug, and a fourth lug. The first support structure is a thickened boss, with the third and fourth lugs arranged on its upper surface. The lower connecting structure includes a second support structure, a fifth lug, and a sixth lug, with the fifth and sixth lugs disposed on the lower surface of the second support structure. The middle connecting structure is located between the upper and lower connecting structures, connecting the first and second support structures through a web and a second rib. The second rib is a mesh-like reinforcing rib. The web also has a fourth through hole for connection to the vehicle body or frame via fasteners.

[0021] The corner module bracket is also connected to the suspension actuator via a fourth mounting base; the fourth mounting base includes a second flange structure, side skirts, and a first rib; the second flange structure is connected to a third mounting base of the suspension actuator; the side skirts are disposed on both sides of the second flange structure to enhance the stiffness of the cantilever beam formed by the flange structure; a first rib is disposed on one side of the lower web of the second flange structure to improve the resistance to bending moment loads.

[0022] Another objective of this invention is to provide a modular and scalable chassis based on the aforementioned corner module system. This chassis adopts a two-axle design, including two drive axle modules and a power battery module located between them. The modules are connected through standardized electrical and mechanical interfaces, enabling it to be expanded into a multi-axle chassis.

[0023] In a further technical solution, the drive axle module includes a drive axle frame, two corner module systems, and two wheels; the corner module systems are mounted on the drive axle frame via corner module brackets, and the two corner module systems are symmetrically arranged.

[0024] The wheel consists of a rim and a tire, wherein the tire is fitted around the outer periphery of the rim, and the rim is connected to one side of the hub motor.

[0025] The power battery module consists of a power battery and a power battery frame, with both ends of the power battery frame connected to the drive axle frames of the two drive axle modules, respectively.

[0026] The corner module system and modular expandable chassis provided in this invention have the following advantages:

[0027] (1) The corner module system adopts an unequal length double wishbone suspension, which has good geometric kinematic characteristics. The kingpin offset is reasonably controlled through the design of the steering knuckle parts.

[0028] (2) By designing the geometry of the upper and lower control arms of the suspension, the steering system has a turning angle range of +90° to -37°. The vehicle has good maneuverability and can realize a variety of steering modes, including: Ackermann steering, center steering, pivot steering, lateral driving and diagonal driving.

[0029] (3) A split-type steering knuckle is adopted, with the mechanical interfaces of the brake caliper-hub motor and the suspension linkage-kingpin steering gear respectively located on the steering knuckle adapter and the steering knuckle body, taking into account both the manufacturability and structural strength. A standardized mechanical interface is provided between the steering knuckle body and the steering knuckle adapter. When different hub motors / brakes need to be adapted, only the steering knuckle adapter needs to be replaced; when different suspension / steering mechanisms need to be adapted, only the steering knuckle body needs to be replaced. The above design improves the versatility and assembly flexibility of the corner module series parts for different vehicle models.

[0030] (4) The use of corner module brackets achieves efficient integration of the driving unit with the chassis / body structure. Integration of the chassis / body with corner module brackets reduces the number of connection points between the corner modules and the chassis, and the mechanical interfaces can adopt standardized designs. This is conducive to the serialization, integration, and modularization of the chassis system, and provides better adaptability for new models. At the same time, it facilitates the disassembly and maintenance of the corner modules.

[0031] (5) The chassis adopts a modular design and can be configured with different numbers of axles according to transportation needs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a corner module system provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the suspension and steering integration mechanism of a corner module system provided in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the integrated drive and braking mechanism of an angle module system provided in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of a steering knuckle adapter in a corner module system provided by an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of a steering knuckle body in an angle module system provided by an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the disassembled structure of a steering knuckle assembly in a corner module system provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the assembly structure of a steering knuckle assembly and a drive-brake integrated mechanism in a corner module system provided by an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of a corner module bracket in a corner module system provided by an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the back structure of a corner module bracket in a corner module system provided by an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of a drive axle module in a modular and scalable chassis provided in an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the structure of a power battery module in a modular and scalable chassis provided in an embodiment of the present invention;

[0043] Figure 12 This is a schematic diagram of a modular and scalable chassis provided in an embodiment of the present invention.

[0044] In the attached diagram: 1-Drive axle frame; 2-Corner module system; 21-Wheel hub motor; 211-First mounting base; 2111-First threaded hole; 212-Wheel hub bearing spline; 22-Brake system; 221-Brake disc; 222-Brake caliper; 2221-First through hole; 23-Steering knuckle assembly; 231-Steering knuckle adapter; 2311-First stepped hole; 2312-Second threaded hole; 2313-Second through hole; 2314 - Third through hole; 232- Steering knuckle body; 2321- First flange structure; 2322- Second stepped hole; 2323- Second mounting base; 24- Kingpin steering gear; 241- Steering transmission mechanism; 242- Steering drive motor; 25- Upper outer control arm; 26- Upper inner control arm assembly; 261- Upper inner control arm body; 2611- First mounting hole; 2612- First lug; 262- First bushing; 27- Lower control arm assembly 271-Lower control arm body; 2711-Second mounting hole; 2712-Second lug; 2713-Ball joint; 272-Second bushing; 28-Suspension actuator; 281-Elastic element; 282-Damper; 283-Third mounting base; 284-Third mounting hole; 29-Angle module bracket; 291-Fourth mounting base; 2911-Second flange structure; 2912-Side skirt; 2913-First rib; 292- Upper connecting structure; 2921-First support structure; 2922-Third lug; 2923-Fourth lug; 293-Middle connecting structure; 2931-Body plate; 2932-Second rib plate; 2933-Fourth through hole; 294-Lower connecting structure; 2941-Second support structure; 2942-Fifth lug; 2943-Sixth lug; 3-Wheel; 31-Tire; 32-Rim; 4-Power battery; 5-Power battery frame. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0046] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0047] like Figure 1 As shown, an embodiment of the present invention provides an angle module system 2, which includes: a hub motor 21, a braking system 22, a steering knuckle assembly 23, a kingpin steering gear 24, an upper outer control arm 25, an upper inner control arm assembly 26, a lower control arm assembly 27, a suspension actuator 28, and an angle module bracket 29.

[0048] The braking system 22 is mounted on one side of the hub motor 21, forming a highly modular structure; the steering knuckle assembly 23 is connected to the hub motor 21; one end of the lower control arm assembly 27 is hinged to the lower end of the steering knuckle assembly 23, and the other end is hinged to the lower end of the corner module bracket 29; one side of the upper outer control arm 25 is connected to the output end of the kingpin steering gear 24, and the other side is connected to the upper end of the steering knuckle assembly 23, so that the kingpin steering gear 24 can drive the wheel 3 to steer by applying torque to the steering knuckle assembly 23; one end of the upper inner control arm assembly 26 is hinged to the upper outer control arm 25, and the other end is hinged to the upper end of the corner module bracket 29; one end of the suspension actuator 28 is hinged to the lower control arm assembly 27, and the other end is mounted on the top of the corner module bracket 29; the corner module bracket 29 efficiently integrates the above structure and connects to at least one of the vehicle body and frame.

[0049] like Figure 2 As shown, in a preferred embodiment of the present invention, the suspension structure of the corner module system 2 adopts an unequal length double wishbone configuration. The upper inner control arm assembly 26, the upper outer control arm 25, the steering knuckle assembly 23, and the lower control arm assembly 27 together with the vehicle frame form a closed loop of the suspension mechanism.

[0050] The upper inner control arm assembly 26 includes an upper inner control arm body 261 and a first bushing 262. The first bushing 262 is arranged in the first mounting hole 2611 of the upper inner control arm body 261 and is hinged to the corner module bracket 29, that is, the upper inner control arm assembly 26 can rotate relative to the corner module bracket 29. In addition, the upper inner control arm body 261 is also hinged to the upper outer control arm 25 through a first lug 2612.

[0051] The kingpin steering gear 24 includes a steering transmission mechanism 241 and a steering drive motor 242; wherein, the housing of the steering transmission mechanism 241 is connected to the upper outer control arm 25, the output end of the steering drive motor 242 is connected to the steering transmission mechanism 241, and the output end of the steering transmission mechanism 241 is connected to the steering knuckle assembly 23.

[0052] The lower control arm assembly 27 includes a lower control arm body 271 and a second bushing 272; one end of the lower control arm body 271 is symmetrically provided with two second mounting holes 2711, and the second bushing 272 is arranged in the second mounting hole 2711 and hinged to the corner module bracket 29; the other end of the lower control arm body 271 is hinged to the lower end of the steering knuckle assembly 23 through a ball joint 2713; the middle part of the lower control arm body 271 is hinged to the third mounting hole 284 at the bottom of the suspension actuator 28 through a second lug 2712.

[0053] The suspension actuator 28 includes an elastic element 281, a damper 282, and a third mounting base 283; the suspension actuator 28 is hinged to the lower control arm body 271 through a third mounting hole 284 at the bottom of the third mounting base 283, and the top of the suspension actuator 28 is connected to the corner module bracket 29 through the third mounting base 283.

[0054] In this embodiment of the invention, the damper 282 employs damping devices from the existing technology system. Specifically, the damper 282 can be a continuously variable damper, a magnetorheological damper, an electromagnetic damper, or a passive hydraulic damper, etc. The elastic element 281 can be in the form of a single-cavity air spring, a double-cavity air spring, a hydropneumatic spring, or a helical spring, etc. This invention does not specifically limit the structural form of the elastic element 281 and the damper 282.

[0055] like Figure 3 As shown, in a preferred embodiment of the present invention, the hub motor 21 is provided with a first mounting seat 211 and a hub bearing spline 212; wherein, the first mounting seat 211 is used to connect with the steering knuckle assembly 23, and is provided with a first threaded hole 2111 for engaging with a fastener; the hub bearing spline 212 is a mechanical interface reserved for an optional half-shaft transmission method.

[0056] The braking system 22 includes a brake disc 221 and a brake caliper 222; wherein, the brake caliper 222 is provided with a first through hole 2221 for connecting to the steering knuckle assembly 23 via fasteners.

[0057] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment of the present invention, the steering knuckle assembly 23 includes a steering knuckle adapter 231 and a steering knuckle body 232, which can greatly simplify the component structure of the steering knuckle and facilitate processing;

[0058] The steering knuckle adapter 231 provides a mechanical interface for the brake caliper 222, the steering knuckle body 232, and the hub motor 21; one end of it is connected to the first mounting base 211 on the hub motor 21, and the other end is connected to the steering knuckle body 232, while also being connected to the brake caliper 222 through a third through hole 2314; in addition, the steering knuckle adapter 231 is also provided with a first stepped hole 2311, a second threaded hole 2312, and a second through hole 2313;

[0059] The steering knuckle body adopts a high-arc configuration, and the kingpin lateral offset is reduced through structural optimization design. The top of the steering knuckle body 232 is provided with a first flange structure 2321, and the bottom of the steering knuckle body 232 is provided with a second mounting seat 2323. The steering knuckle body 232 is also provided with a second stepped hole 2322. The first flange structure 2321 is used to install the output end of the steering transmission mechanism 241. The second stepped hole 2322 is connected to the second threaded hole 2312 of the steering knuckle adapter 231 through fasteners. The second mounting seat 2323 is connected to the ball joint 2713 on the lower control arm body 271.

[0060] like Figure 8 and Figure 9 As shown, in a preferred embodiment of the present invention, the corner module bracket 29 includes a fourth mounting base 291, an upper connecting structure 292, a middle connecting structure 293 and a lower connecting structure 294;

[0061] The upper connecting structure 292 is mainly used to hinge the upper inner control arm assembly 26, and includes a first support structure 2921, a third lug 2922, and a fourth lug 2923. The first support structure 2921 is a thickened boss, and the third lug 2922 and the fourth lug 2923 are arranged on its upper surface. Similarly, the lower connecting structure 294 includes a second support structure 2941, a fifth lug 2942, and a sixth lug 2943. The fifth lug 2942 and the sixth lug 2943 are disposed on the lower surface of the second support structure 2941. The middle connecting structure 293 is located between the upper connecting structure 292 and the lower connecting structure 294, and connects the first support structure 2921 and the second support structure 2941 through a web plate 2931 and a second rib plate 2932. The second rib plate 2932 is a grid-like reinforcing rib, which can improve the overall rigidity of the corner module bracket 29 and also helps to reduce the weight of the parts. The web plate 2931 is also provided with a fourth through hole 2933 for connecting to the body or frame via fasteners.

[0062] The corner module bracket 29 is also connected to the suspension actuator 28 via a fourth mounting base 291; the fourth mounting base 291 includes a second flange structure 2911, a side skirt 2912, and a first rib 2913; specifically, the second flange structure 2911 is connected to the third mounting base 283 of the suspension actuator 28; the side skirt 2912 is disposed on both sides of the second flange structure 2911 to enhance the stiffness of the cantilever beam formed by the flange structure; a first rib 2913 is provided on one side of the lower web of the second flange structure 2911 to improve the resistance to bending moment loads.

[0063] like Figure 10-12As shown, this is a modular and scalable chassis provided in one embodiment of the present invention. Based on the aforementioned corner module system 2, the chassis adopts a two-axle design, including two drive axle modules and a power battery module located between them. The modules are connected via standardized electrical and mechanical interfaces, allowing for expansion into a multi-axle chassis, thus flexibly configuring the number of axles according to transportation mission requirements. Furthermore, the drive axle modules and power battery module have a low overall height and a relatively flat upper space, enabling them to adapt to various superstructures to meet the application needs of different scenarios.

[0064] The drive axle module includes a drive axle frame 1, two corner module systems 2, and two wheels 3; the corner module systems 2 are mounted on the drive axle frame 1 via corner module brackets 29, and the two corner module systems 2 are symmetrically arranged.

[0065] The wheel 3 consists of a rim 32 and a tire 31, wherein the tire 31 is fitted around the outer periphery of the rim, and the rim 32 is connected to one side of the hub motor 21.

[0066] The power battery module consists of a power battery 4 and a power battery frame 5. The two ends of the power battery frame 5 are respectively connected to the drive axle frame 1 of the two drive axle modules.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A corner module system, characterized in that, Includes hub motor, braking system, steering knuckle assembly, kingpin steering gear, upper outer control arm, upper inner control arm assembly, lower control arm assembly, suspension actuator and corner module bracket; The braking system is mounted on one side of the hub motor, forming a modular structure; the steering knuckle assembly is connected to the hub motor; one end of the lower control arm assembly is hinged to the lower end of the steering knuckle assembly, and the other end is hinged to the lower end of the corner module bracket; one side of the upper outer control arm is connected to the output end of the kingpin steering gear, and the other side is connected to the upper end of the steering knuckle assembly, so that the kingpin steering gear drives the wheel to steer by applying torque to the steering knuckle assembly; one end of the upper inner control arm assembly is hinged to the upper outer control arm, and the other end is hinged to the upper end of the corner module bracket; one end of the suspension actuator is hinged to the lower control arm assembly, and the other end is mounted on the top of the corner module bracket; the corner module bracket integrates the above structures and is connected to at least one of the vehicle body and the frame; The suspension structure of the corner module system adopts an unequal length double wishbone configuration. The upper inner control arm assembly, upper outer control arm, steering knuckle assembly, and lower control arm assembly together with the vehicle frame form a closed loop of the suspension mechanism. The upper inner control arm assembly includes an upper inner control arm body and a first bushing; the first bushing is arranged in a first mounting hole of the upper inner control arm body and is hinged to the corner module bracket, that is, the upper inner control arm assembly can rotate relative to the corner module bracket; in addition, the upper inner control arm body is also hinged to the upper outer control arm through a first lug. The kingpin steering system includes a steering transmission mechanism and a steering drive motor; wherein, the housing of the steering transmission mechanism is connected to the upper outer control arm, the output end of the steering drive motor is connected to the steering transmission mechanism, and the output end of the steering transmission mechanism is connected to the steering knuckle assembly; The lower control arm assembly includes a lower control arm body and a second bushing; one end of the lower control arm body is symmetrically provided with two second mounting holes, and a second bushing is arranged in the second mounting hole and hinged to the corner module bracket; the other end of the lower control arm body is hinged to the lower end of the steering knuckle assembly through a ball joint; the middle part of the lower control arm body is hinged to the third mounting hole at the bottom of the suspension actuator through a second lug. The suspension actuator includes an elastic element, a damper, and a third mounting base; the suspension actuator is hinged to the lower control arm body through a third mounting hole at the bottom of the third mounting base, and the top of the suspension actuator is connected to the corner module bracket through the third mounting base; The hub motor is provided with a first mounting seat and a hub bearing spline; wherein, the first mounting seat is used to connect with the steering knuckle assembly, and is provided with a first threaded hole for mating with fasteners; the hub bearing spline is a mechanical interface reserved for a half-shaft transmission mode; The braking system includes a brake disc and a brake caliper; wherein, the brake caliper is provided with a first through hole for connection with the steering knuckle assembly via fasteners; The steering knuckle assembly includes a steering knuckle adapter and a steering knuckle body; One end of the steering knuckle adapter is connected to the first mounting bracket on the hub motor, and the other end is connected to the steering knuckle body. It is also connected to the brake caliper body through a third through hole. In addition, the steering knuckle adapter is provided with a first stepped hole, a second threaded hole, and a second through hole. The steering knuckle body adopts a high-arc design; the top of the steering knuckle body is provided with a first flange structure, the bottom of the steering knuckle body is provided with a second mounting seat, and the steering knuckle body is also provided with a second stepped hole; wherein, the first flange structure is used to install the output end of the steering transmission mechanism; the second stepped hole is connected to the second threaded hole of the steering knuckle adapter through a fastener; the second mounting seat is connected to the ball joint on the lower control arm body; The corner module bracket includes a fourth mounting base, an upper connecting structure, a middle connecting structure, and a lower connecting structure; The upper connecting structure, used for hinged connection of the upper inner control arm assembly, includes a first support structure, a third lug, and a fourth lug. The first support structure is a thickened boss with the third and fourth lugs arranged on its upper surface. The lower connecting structure includes a second support structure, a fifth lug, and a sixth lug, with the fifth and sixth lugs disposed on the lower surface of the second support structure. The middle connecting structure is located between the upper and lower connecting structures and connects the first and second support structures via a web and a second rib. The second rib is a mesh-like reinforcing rib. The web also has a fourth through hole for connection to the vehicle body or frame via fasteners. The corner module bracket is also connected to the suspension actuator via a fourth mounting base; the fourth mounting base includes a second flange structure, side skirts, and a first rib; the second flange structure is connected to a third mounting base of the suspension actuator; the side skirts are disposed on both sides of the second flange structure to enhance the stiffness of the cantilever beam formed by the flange structure; a first rib is disposed on one side of the lower web of the second flange structure to improve the resistance to bending moment loads.

2. The corner module system according to claim 1, characterized in that, The damper is a continuously variable damper, a magnetorheological damper, an electromagnetic damper, or a passive hydraulic damper; the elastic element is a single-cavity air spring, a double-cavity air spring, a hydropneumatic spring, or a helical spring.

3. A modular and scalable chassis, comprising a corner module system according to any one of claims 1 and 2, characterized in that, The chassis features a two-axle design, including two drive axle modules and a power battery module located between them; the modules are connected through standardized electrical and mechanical interfaces, and it has the ability to be expanded into a multi-axle chassis.

4. The modular and scalable chassis according to claim 3, characterized in that, The drive axle module includes a drive axle frame, two corner module systems, and two wheels; the corner module systems are mounted on the drive axle frame via corner module brackets, and the two corner module systems are symmetrically arranged. The wheel consists of a rim and a tire, wherein the tire is fitted around the outer periphery of the rim, and the rim is connected to one side of the hub motor. The power battery module consists of a power battery and a power battery frame, with both ends of the power battery frame connected to the drive axle frames of the two drive axle modules, respectively.

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