Hub motor steering electric trailer and running mode thereof

Abstract

The invention relates to the technical field of trailers, in particular to a hub motor steering electric trailer and a running mode thereof. Comprising a trailer frame assembly, a trailer frame front support arranged on the lower side of the trailer frame assembly, a telescopic left hub motor module, a telescopic right hub motor module, a core electrical component and a battery, wherein the left hub motor module and the right hub motor module are connected with the trailer frame front support, and the core electrical component and the battery are installed on the lower side of the trailer frame assembly through bolts. The electric drive hanging bridge and the hanging bridge are mounted on the lower side of the trailer frame assembly through a trailer suspension. When the electric trailer is used in cooperation with a tractor, the conventional transportation requirement can be met, energy can be recycled on a long downhill road section, the energy utilization rate is increased, and the energy consumption cost is reduced; and after being separated from the tractor, the electric vehicle can realize autonomous driving, steering and braking through an intelligent driving control system, an electric drive hanging axle and a hub motor module of the electric vehicle without additionally purchasing a new energy vehicle or adding a driver, so that the equipment purchasing cost and the operation cost are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of trailer technology, and in particular to a hub motor-driven electric trailer and its driving mode. Background Technology

[0002] A trailer is a vehicle towed by a car but without its own power drive. It is usually transported by a truck cab and one or more trailers. It is an important type of vehicle in road transport and is used to facilitate the unloading of goods.

[0003] However, conventional trailers currently on the market have significant technical defects and application limitations: First, conventional trailers rely on a tractor unit to function, lacking independence. In transporting materials such as coal and sand, the entire vehicle (tractor + trailer) and driver must wait for extended periods for loading or unloading, often accompanied by queuing, resulting in extremely poor transport efficiency and significantly reducing the vehicle's utilization rate and economic benefits. Second, in some areas of China with strict environmental regulations, fuel-powered trucks are prohibited from entering. In such situations, a fuel-powered truck must first transport the goods to the area entrance via external roads, detach the trailer, and then a new energy vehicle within the area will connect with the trailer and transport it to a designated location for loading and unloading. This process not only consumes a significant amount of time but also requires the purchase of additional new energy vehicles to meet the connection needs, while increasing the number of drivers, leading to a double increase in procurement and operating costs, resulting in severe economic inefficiency. In summary, existing conventional trailers, under the aforementioned specific conditions, cannot meet the demand for efficient and low-cost transportation in terms of either procurement or operating costs. Summary of the Invention

[0004] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a hub motor steering electric trailer and its driving mode.

[0006] To achieve the above objectives, the technical solution of the present invention is: a hub motor steering electric trailer, comprising: a trailer frame assembly, a trailer frame front support disposed on the lower side of the trailer frame assembly, a retractable left hub motor module and a right hub motor module connected to the trailer frame front support, core electrical components and a battery bolted to the lower side of the trailer frame assembly, and an electric drive axle and axle mounted on the lower side of the trailer frame assembly via a trailer suspension; wherein, the core electrical components include an integrated PDU, an electric air pump, a cooling system, and an intelligent driving control system respectively connected to the integrated PDU; the electric drive axle includes an axle housing assembly mounted on the lower side of the trailer frame assembly, a drive motor disposed on the axle housing assembly, a reducer connected to the drive motor, and wheel end assemblies with disconnection mechanisms located on both sides of the axle housing assembly.

[0007] In some embodiments, the left hub motor module includes a left hub motor assembly and a left electric cylinder assembly, with the left electric cylinder assembly connected to the left hub motor assembly and the trailer frame front support on both sides, respectively.

[0008] In some embodiments, the right hub motor module includes a right hub motor assembly and a right electric cylinder assembly, with the right electric cylinder assembly connected to the right hub motor assembly and the trailer frame front support on both sides, respectively.

[0009] In some embodiments, wheel assemblies are mounted on the outer sides of both the left and right wheel hub motor assemblies.

[0010] In some embodiments, the integrated PDU includes an electric drive bridge wiring harness interface connected to the drive motor, a left wheel hub motor wiring harness interface connected to the left wheel hub motor assembly, a right wheel hub motor wiring harness interface connected to the right wheel hub motor assembly, an electric air pump wiring harness interface connected to the electric air pump, a cooling system wiring harness interface connected to the cooling system, electric cylinder wiring harness interfaces connected to the left and right electric cylinder assemblies respectively, a charging wiring harness interface, a battery wiring harness interface connected to the battery, and a DC-DC interface connected to the intelligent driving control system. A charging socket is connected to the charging wiring harness interface.

[0011] In some embodiments, the integrated PDU also integrates an electric air pump controller, an electric drive suspension controller, a left wheel hub motor controller, a right wheel hub motor controller, a cooling system controller, an electric cylinder controller, a charging module, and a battery conversion module.

[0012] In some embodiments, the intelligent driving control system is connected to all low-voltage control mechanisms on the trailer and is used to control the overall operating status of the trailer, including controlling the start and stop of the drive motor, the connection and disconnection of the wheel end assembly with disconnection mechanism, and the extension and retraction of the left electric cylinder assembly and the right electric cylinder assembly.

[0013] A driving mode for a hub motor-steering electric trailer includes the following two driving states: State 1: Driving in coordination with a tractor: When the trailer and the tractor are connected by the saddle and the towing pin, the left and right electric cylinder assemblies retract, raising the left and right wheel hub motor assemblies to the specified height. The intelligent driving control system controls the drive motor to de-energize and the wheel end assembly with the disconnection mechanism to disconnect, so that the electric drive trailer bridge function is consistent with the trailer bridge. Status 2: Independent driving after detaching from the tractor: When the trailer reaches the transfer point or designated area and detaches from the tractor, the left and right electric cylinder assemblies extend to the designated positions, the electric drive axle and core electrical components enter normal working condition, the intelligent driving control system controls the trailer to drive according to the positioning and navigation route, the battery provides energy, the electric drive axle provides driving force, the left and right wheel hub motor assemblies achieve steering through the left and right wheel electronic differential control, and the electric air pump provides braking air to the electric drive axle and the axle.

[0014] In some embodiments, in State 1, when energy recovery is needed on a long downhill slope, the intelligent driving control system controls the disconnection mechanism wheel end assembly connection, and the drive motor enters the energy recovery mode to charge the battery through the integrated PDU.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are: 1. When used in conjunction with a tractor, the electric trailer of the present invention can meet the needs of conventional transportation and can recover energy on long downhill sections, thereby improving energy utilization and reducing energy costs. After being separated from the tractor, it can achieve autonomous driving, steering and braking through its own intelligent driving control system, electric drive axle and wheel hub motor module. There is no need to purchase additional new energy vehicles or add drivers, which greatly reduces equipment procurement costs and operating costs. 2. For working conditions that require waiting for loading or unloading, the tractor can detach the electric trailer after delivering it to the designated location and carry out other transportation operations without waiting. The electric trailer can autonomously complete the subsequent loading and unloading transportation, which significantly reduces waiting time, improves the utilization rate of trailers and tractors, enhances transportation timeliness, and thus improves economic benefits. 3. In areas where gasoline vehicles are restricted, there is no need for gasoline trucks and new energy vehicles to hand over trailers. Electric trailers can be delivered directly by gasoline trucks to the entrance of the area and then enter the area autonomously to complete the transportation. This simplifies the transportation process, saves handover time, avoids the additional investment in new energy vehicles, and further optimizes transportation costs and efficiency.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0017] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0018] To make the above-mentioned beneficial effects and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0022] Explanation of key figure labels: Figure 1 This is a schematic diagram of the structure of a hub motor steering electric trailer according to the present invention; Figure 2 This is a schematic diagram of the internal component structure of the core electrical component of the present invention; Figure 3 This is a schematic diagram of the structure of the electric drive bridge of the present invention; Figure 4 This is a schematic diagram of the structure of the left hub motor module and the right hub motor module of the present invention; Figure 5 This is a schematic diagram of the various wire harness interface structures of the integrated PDU of the present invention.

[0023] Key reference numerals in the attached diagrams: Trailer frame assembly -1, Trailer frame front support -2, Left hub motor module -3, Right hub motor module -4, Core electrical components -5, Battery -6, Electric drive axle -7, Axle -8, Left hub motor assembly -31, Left electric cylinder assembly -32, Right hub motor assembly -41, Right electric cylinder assembly -42, Integrated PDU -51, Electric air pump -52, Cooling system -53, Intelligent driving control system -54 71. Axle housing assembly - 72. Drive motor - 73. Reducer - 74. Wheel end assembly with disconnect mechanism - 75. Electric drive suspension bridge wiring harness interface - 511. Left wheel hub motor wiring harness interface - 512. Right wheel hub motor wiring harness interface - 513. Electric air pump wiring harness interface - 514. Cooling system wiring harness interface - 515. Electric cylinder wiring harness interface - 516. Charging wiring harness interface - 517. Battery wiring harness interface - 518. DC-DC interface - 519. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that, as long as there is no conflict, the various embodiments and features in the various embodiments of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0025] Furthermore, numerous specific details are set forth in the following description for illustrative purposes to provide a thorough understanding of the embodiments of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without the specific details or particular methods described herein.

[0026] Please see Figure 1-5 This invention provides a hub motor steering electric trailer, comprising: a trailer frame assembly 1, a trailer frame front support 2 disposed on the lower side of the trailer frame assembly 1, a retractable left hub motor module 3 and a right hub motor module 4 connected to the trailer frame front support 2, a core electrical component 5 and a battery 6 bolted to the lower side of the trailer frame assembly 1, and an electric drive axle 7 and axle 8 mounted on the lower side of the trailer frame assembly 1 via a trailer suspension; wherein, the core electrical component 5 includes an integrated PDU 51, an electric air pump 52 connected to the integrated PDU 51, a cooling system 53, and an intelligent driving control system 54; the electric drive axle 7 includes an axle housing assembly 71 mounted on the lower side of the trailer frame assembly 1, a drive motor 72 disposed on the axle housing assembly 71, a reducer 73 connected to the drive motor 72, and wheel end assemblies 74 with disconnection mechanisms located on both sides of the axle housing assembly 71.

[0027] When in use, the trailer is driven to the relevant area by a tractor, and then the tractor can detach from the trailer. The left hub motor module 3 and the right hub motor module 4 extend and contact the ground, replacing the lead of the front tractor. The trailer can then drive autonomously, steer, and brake through the intelligent driving control system 54, the electric drive axle 7, and the left and right hub motor modules, thus driving autonomously to the designated loading and unloading area. The drive motor 72 provides driving power, the reducer 73 can adjust the speed and torque, and the wheel end assembly 74 with disconnection mechanism can switch the working state of the electric drive axle 7.

[0028] According to some embodiments of this application, optionally, the left hub motor module 3 includes a left hub motor assembly 31 and a left electric cylinder assembly 32, with the left electric cylinder assembly 32 connected to the left hub motor assembly 31 and the trailer frame front support 2 on both sides respectively. It serves to control the extension and retraction of the left hub motor assembly 31.

[0029] According to some embodiments of this application, optionally, the right hub motor module 4 includes a right hub motor assembly 41 and a right electric cylinder assembly 42, with the right electric cylinder assembly 42 connected to the right hub motor assembly 41 and the trailer frame front support 2 on both sides, respectively. It serves to control the extension and retraction of the right hub motor assembly 41.

[0030] According to some embodiments of this application, optionally, wheel assemblies are mounted on the outer sides of both the left hub motor assembly 31 and the right hub motor assembly 41. The wheel assemblies replace the front-end tractor section, enabling the trailer frame assembly 1 to travel in a balanced manner and ensuring stability during driving.

[0031] According to some embodiments of this application, optionally, the integrated PDU 51 includes an electric drive bridge wiring harness interface 511 connected to the drive motor 72 to realize control and energy transmission of the drive motor 72; the left wheel hub motor assembly 31 is connected to the left wheel hub motor wiring harness interface 512, and the right wheel hub motor assembly 41 is connected to the right wheel hub motor wiring harness interface 513 for controlling the operation of the wheel hub motor assembly; the electric air pump 52 is connected to the electric air pump wiring harness interface 514 for controlling the operation of the electric air pump 52; and the cooling system 53 is connected to the cooling system wiring harness interface 515 to realize control of the cooling system 53. The left electric cylinder assembly 32 and the right electric cylinder assembly 42 are respectively connected to the electric cylinder wiring harness interface 516 to control the extension and retraction of the electric cylinder assembly; a charging socket is connected to the charging wiring harness interface 517 to charge the battery 6; the battery 6 is connected to the battery wiring harness interface 518 to realize the energy transfer between the battery 6 and the integrated PDU 51; the intelligent driving control system 54 is connected to the DC-DC interface 519 to provide a stable voltage for the intelligent driving control system 54.

[0032] According to some embodiments of this application, optionally, the integrated PDU51 also integrates an electric air pump controller, an electric drive suspension controller, a left wheel hub motor controller, a right wheel hub motor controller, a cooling system controller, an electric cylinder controller, a charging module, and a battery conversion module. It serves to control and convert energy for each component.

[0033] According to some embodiments of this application, optionally, the intelligent driving control system 54 is connected to all low-voltage control mechanisms on the trailer and is used to control the overall operating state of the trailer, including controlling the start and stop of the drive motor 72, the connection and disconnection of the wheel end assembly 74 with the disconnection mechanism, and the extension and retraction of the left electric cylinder assembly 32 and the right electric cylinder assembly 42. This achieves intelligent control of the entire electric trailer.

[0034] A driving mode for a hub motor-steering electric trailer includes the following two driving states: State 1: Driving in coordination with a tractor: When the trailer and the tractor are connected by the saddle and the towing pin, the left electric cylinder assembly 32 and the right electric cylinder assembly 42 retract, raising the left wheel hub motor assembly 31 and the right wheel hub motor assembly 41 to the specified height. The intelligent driving control system 54 controls the drive motor 72 to de-energize and the wheel end assembly 74 with the disconnection mechanism to disconnect, so that the electric drive trailer 7 functions the same as the trailer 8. In state one, the tractor unit is connected to the electric trailer via the saddle and towing pin. At this time, the intelligent driving control system 54 controls the retraction of the left electric cylinder assembly 32 and the right electric cylinder assembly 42, raising the left wheel hub motor assembly 31 and the right wheel hub motor assembly 41 to the specified height to prevent the wheel assemblies from contacting the ground and affecting normal driving. Simultaneously, the intelligent driving control system 54 controls the drive motor 72 to de-energize, and the wheel end assembly 74 with the disconnection mechanism disconnects. At this time, the electric drive axle 7 only serves a supporting function, with the same function as the axle 8, and the electric trailer drives normally with the tractor unit.

[0035] Status 2: Independent driving after detaching from the tractor: When the trailer reaches the transfer point or designated area and detaches from the tractor, the left electric cylinder assembly 32 and the right electric cylinder assembly 42 extend to the designated position, the electric drive axle 7 and the core electrical components 5 enter normal working state, the intelligent driving control system 54 controls the trailer to drive according to the positioning and navigation route, the battery 6 provides energy, the electric drive axle 7 provides driving force, the left wheel hub motor assembly 31 and the right wheel hub motor assembly 41 achieve steering through the left and right wheel electronic differential control, and the electric air pump 52 provides braking air to the electric drive axle 7 and axle 8. In state two, when the electric trailer arrives at the transfer point or designated area (such as the entrance to a restricted area for fuel vehicles, a material loading and unloading point, etc.), the intelligent driving control system 54 controls the left electric cylinder assembly 32 and the right electric cylinder assembly 42 to extend to the designated position, causing the wheel assemblies on the left wheel hub motor assembly 31 and the right wheel hub motor assembly 41 to touch the ground. At the same time, the electric drive axle 7 and the core electrical components 5 enter normal working condition, the tractor unit detaches from the electric trailer, and the tractor unit can proceed to other locations for transportation operations.

[0036] The intelligent driving control system 54 obtains the current location information through the positioning module and plans the driving route in conjunction with the preset navigation route. The battery 6 provides energy to components such as the drive motor 72, the left wheel hub motor assembly 31, the right wheel hub motor assembly 41, the electric air pump 52, the cooling system 53, and the intelligent driving control system 54 through the integrated PDU 51. After the drive motor 72 starts, it reduces the speed and increases the torque through the reducer 73, and transmits the power to the wheel end assembly 74 with the disconnect mechanism, driving the wheels to rotate and driving the electric trailer. During the turning process, the intelligent driving control system 54 controls the left wheel hub motor assembly 31 and the right wheel hub motor assembly 41 to achieve electronic differential speed between the left and right wheels according to the driving route requirements. That is, by adjusting the speed difference between the left and right wheel hub motors, the electric trailer can be turned. When braking is required, the intelligent driving control system 54 controls the electric air pump 52 to start. The compressed air generated by the electric air pump 52 is transmitted through pipelines to the braking mechanism of the electric drive axle 7 and axle 8 to brake the electric trailer and ensure that the electric trailer can safely travel to the designated location.

[0037] According to some embodiments of this application, optionally, in state one, when energy recovery is needed on a long downhill slope, the intelligent driving control system 54 controls the connection of the wheel end assembly 74 of the belt disconnect mechanism, and the drive motor 72 enters the energy recovery mode, charging the battery 6 through the integrated PDU 51. When the electric trailer travels with the tractor to a long downhill section and needs energy recovery, the intelligent driving control system 54 controls the connection of the wheel end assembly 74 of the belt disconnect mechanism, and simultaneously causes the drive motor 72 to enter the energy recovery mode. Under the action of gravity, the electric trailer drives the wheel assembly to rotate, the wheel assembly drives the drive motor 72 to rotate, and the drive motor 72 converts mechanical energy into electrical energy. The generated electrical energy is transmitted to the battery 6 through the relevant conversion unit in the integrated PDU 51 to charge the battery 6, thus realizing energy recovery.

[0038] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0039] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0040] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A hub motor-driven electric trailer, characterized in that, include: The trailer frame assembly (1), the trailer frame front support (2) located on the lower side of the trailer frame assembly (1), the retractable left hub motor module (3) and right hub motor module (4) connected to the trailer frame front support (2), the core electrical components (5) and battery (6) installed on the lower side of the trailer frame assembly (1) by bolts, and the electric drive axle (7) and axle (8) installed on the lower side of the trailer frame assembly (1) by the trailer suspension; wherein, The core electrical components (5) include an integrated PDU (51), an electric air pump (52) connected to the integrated PDU (51), a cooling system (53), and an intelligent driving control system (54); The electric drive trailer axle (7) includes an axle housing assembly (71) mounted on the underside of the trailer frame assembly (1), a drive motor (72) mounted on the axle housing assembly (71), a reducer (73) connected to the drive motor (72), and wheel end assemblies (74) with disconnection mechanisms located on both sides of the axle housing assembly (71).

2. The hub motor steering electric trailer according to claim 1, characterized in that, The left hub motor module (3) includes a left hub motor assembly (31) and a left electric cylinder assembly (32). The left electric cylinder assembly (32) is connected to the left hub motor assembly (31) and the trailer frame front support (2) on both sides respectively.

3. The hub motor steering electric trailer according to claim 2, characterized in that, The right hub motor module (4) includes a right hub motor assembly (41) and a right electric cylinder assembly (42). The right electric cylinder assembly (42) is connected to the right hub motor assembly (41) and the trailer frame front support (2) on both sides respectively.

4. The hub motor steering electric trailer according to claim 3, characterized in that, Wheel assemblies are mounted on the outer sides of both the left wheel hub motor assembly (31) and the right wheel hub motor assembly (41).

5. A hub motor-driven electric trailer according to claim 3, characterized in that, The integrated PDU (51) includes an electric drive bridge harness interface (511) connected to the drive motor (72), a left wheel hub motor harness interface (512) connected to the left wheel hub motor assembly (31), a right wheel hub motor harness interface (513) connected to the right wheel hub motor assembly (41), an electric air pump harness interface (514) connected to the electric air pump (52), a cooling system harness interface (515) connected to the cooling system (53), an electric cylinder harness interface (516) connected to the left electric cylinder assembly (32) and the right electric cylinder assembly (42) respectively, a charging harness interface (517), a battery harness interface (518) connected to the battery (6), and a DC-DC interface (519) connected to the intelligent driving control system (54). A charging socket is connected to the charging harness interface (517).

6. A hub motor-driven electric trailer according to claim 5, characterized in that, The integrated PDU (51) also integrates an electric air pump controller, an electric drive suspension controller, a left wheel hub motor controller, a right wheel hub motor controller, a cooling system controller, an electric cylinder controller, a charging module, and a battery conversion module.

7. A hub motor-driven electric trailer according to claim 6, characterized in that, The intelligent driving control system (54) is connected to all low-voltage control mechanisms on the trailer and is used to control the overall operating status of the trailer, including controlling the start and stop of the drive motor (72), the connection and disconnection of the wheel end assembly (74) with disconnection mechanism, and the extension and retraction of the left electric cylinder assembly (32) and the right electric cylinder assembly (42).

8. The driving mode of a hub motor-steering electric trailer according to any one of claims 3-7, characterized in that, Including the following two driving states: State 1: Driving in coordination with a tractor: When the trailer and the tractor are connected by the saddle and the towing pin, the left electric cylinder assembly (32) and the right electric cylinder assembly (42) retract, raising the left wheel hub motor assembly (31) and the right wheel hub motor assembly (41) to the specified height. The intelligent driving control system (54) controls the drive motor (72) to be de-energized and the wheel end assembly (74) with the disconnection mechanism to disconnect, so that the electric drive trailer (7) functions the same as the trailer (8). Status 2: Independent driving after detaching from the tractor: When the trailer reaches the transfer point or designated area and detaches from the tractor, the left electric cylinder assembly (32) and the right electric cylinder assembly (42) extend to the designated position, the electric drive axle (7) and the core electrical components (5) enter normal working state, the intelligent driving control system (54) controls the trailer to drive according to the positioning and navigation route, the battery (6) provides energy, the electric drive axle (7) provides driving force, the left wheel hub motor assembly (31) and the right wheel hub motor assembly (41) achieve steering through the left and right wheel electronic differential control, and the electric air pump (52) provides braking air to the electric drive axle (7) and the axle (8).

9. The driving mode of a hub motor-steering electric trailer according to claim 8, characterized in that, In state one, when energy recovery is needed on a long downhill slope, the intelligent driving control system (54) controls the connection of the belt disconnect mechanism wheel end assembly (74), and the drive motor (72) enters the energy recovery mode, charging the battery (6) through the integrated PDU (51).

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