CN219133838U

CN219133838U - Electric truck chassis

Info

Publication number: CN219133838U
Application number: CN202320283400.2U
Authority: CN
Inventors: 孙春峰; 唐明; 肖何; 陈培光
Original assignee: Anhui Hualing Automobile Co Ltd
Current assignee: Anhui Hualing Automobile Co Ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-06
Anticipated expiration: 2033-02-16

Abstract

The application discloses electric truck chassis includes: the frame assembly is provided with a front suspension assembly at one end and a rear suspension assembly at the other end; the power conversion assembly comprises a first power conversion assembly and a second power conversion assembly, and the first power conversion assembly and the second power conversion assembly are respectively arranged at two sides of the frame assembly and are positioned between the front suspension assembly and the rear suspension assembly; the battery thermal management and control system integrated bracket is arranged on one side of the frame assembly, provided with the first power conversion assembly, and is positioned between the front suspension assembly and the first power conversion assembly; the small three-electric integrated bracket is positioned between the cab assembly and the front suspension assembly of the truck; the driving motor and the AMT assembly are arranged close to the front suspension assembly; the transmission shaft is rotatably arranged between the driving motor, the AMT assembly and the rear suspension assembly. The power conversion assemblies are arranged on two sides of the frame assembly in the structure, so that the gravity center of the whole vehicle can be reduced, the cab is kept away from, and the running stability and safety are improved.

Description

Electric truck chassis

Technical Field

The utility model relates to the technical field of vehicle chassis, in particular to an electric truck chassis.

Background

Along with the rapid development of new energy automobiles, electric trucks also have rapid development, and the electric trucks have the characteristics of large carrying capacity and strong power and have great application potential.

In the prior art, the arrangement structure of the power conversion assemblies of the electric heavy truck product is uniform, the power conversion assemblies are uniformly distributed at the rear of the cab, however, the weight of the power conversion assemblies is about 3 tons, the center of gravity of the whole truck is high when the power conversion assemblies are arranged at the rear of the cab, the truck is unstable to travel, and meanwhile, the power conversion assemblies are too close to the cab, so that potential safety hazards exist when the truck brakes emergently. In addition, the parts of the chassis of the electric truck are distributed in position, so that the integration of the chassis structure is poor, and the protection is inconvenient.

In summary, how to provide an electric truck chassis with good driving safety performance and high structural arrangement integration level is a problem to be solved by those skilled in the art.

Disclosure of Invention

Therefore, the utility model aims to provide the electric truck chassis which has high arrangement integration level, can reduce the gravity center of the whole truck and improve the driving safety.

In order to achieve the above object, the present utility model provides the following technical solutions:

an electric truck chassis, located the bottom of freight train, includes: the frame assembly is provided with a front suspension assembly at one end and a rear suspension assembly at the other end;

the power conversion assembly comprises a first power conversion assembly and a second power conversion assembly, and the first power conversion assembly and the second power conversion assembly are respectively arranged on two sides of the frame assembly and are positioned between the front suspension assembly and the rear suspension assembly;

the battery thermal management and control system integrated bracket is arranged on one side of the frame assembly, provided with the first power conversion assembly, and is positioned between the front suspension assembly and the first power conversion assembly;

the small three-electric integrated bracket is arranged on the frame assembly and is positioned between the cab assembly and the front suspension assembly of the truck; the driving motor and the AMT assembly are arranged on the frame assembly, are positioned between the front suspension assembly and the rear suspension assembly and are close to the front suspension assembly;

the transmission shaft is rotatably arranged between the driving motor, the AMT assembly and the rear suspension assembly.

An electric truck chassis, be equipped with the crossbeam support between first trading the electric assembly with the second trades the electric assembly, first trading the electric assembly and being equipped with first trading electric assembly bracket and first battery box, the second trades the electric assembly and is equipped with second trading electric assembly bracket and second battery box, first battery box with the quantity of second battery box all is established to a plurality of.

The chassis of the electric truck, the first power exchange assembly and the second power exchange assembly further comprise quick-change connectors and breaking boxes, the quick-change connectors are respectively arranged at two ends of the first power exchange assembly bracket and the second power exchange assembly bracket, and the breaking boxes are arranged among a plurality of first battery boxes and among a plurality of second battery boxes.

The chassis of the electric truck, the two ends of the first power exchange assembly bracket and the second power exchange assembly bracket are respectively provided with a plurality of air cylinders and a plurality of locking pins, and the air cylinders drive the locking pins to move.

The chassis of the electric truck, the integrated bracket of the battery thermal management and control system comprises a bracket body of the integrated bracket of the battery thermal management and control system, a battery cooling unit is arranged in the bracket body of the integrated bracket of the battery thermal management and control system, the top surface of the bracket body of the integrated bracket of the battery thermal management and control system is provided with a bracket on a controller, and a battery junction box, a battery control box and a charging port bracket are arranged on the bracket on the controller.

An MSD switch is arranged on the side face of the battery junction box, and a charging port is arranged on the top face of the charging port bracket.

The small three-electric integrated bracket comprises a small three-electric integrated bracket body, and an electric air conditioner compressor, an all-in-one controller, an electric air compressor, a whole vehicle controller, a driving motor controller, an electric steering oil pump, a movable oil pot bracket and a motor electric control cooling kettle bracket are arranged on the small three-electric integrated bracket body.

An electric truck chassis, be equipped with on the movable oil pot support and move the oil pot, be equipped with the automatically controlled cooling kettle of motor on the automatically controlled cooling kettle support of motor, the electric oil pump that turns to is located be close to move the position of oil pot.

An electric truck chassis, the frame assembly sets up one side of second trades the electricity assembly still is equipped with low pressure electric bottle frame assembly, combination gas receiver assembly and go up car handrail of marking time, low pressure storage battery frame assembly the combination gas receiver assembly with go up car handrail of marking time all locates the second trades the electricity assembly with between the front overhang assembly, and be close to the second trades the electricity assembly, the combination gas receiver assembly is located the bottom of low pressure electric bottle frame assembly, go up car handrail of marking time optionally locates on the low pressure electric bottle frame assembly.

An electric truck chassis, the frame assembly is equipped with steering wheel, fly net, condenser and heat dissipation water tank between the terminal surface that is close to cab assembly one end with little three electricity integration bracket.

Compared with the background art, the electric truck chassis provided by the utility model is arranged at the bottom of a truck and comprises: the frame assembly is provided with a front suspension assembly at one end and a rear suspension assembly at the other end; the power conversion assembly comprises a first power conversion assembly and a second power conversion assembly, and the first power conversion assembly and the second power conversion assembly are respectively arranged at two sides of the frame assembly and are positioned between the front suspension assembly and the rear suspension assembly; the battery thermal management and control system integrated bracket is arranged on one side of the frame assembly, provided with the first power conversion assembly, and is positioned between the front suspension assembly and the first power conversion assembly; the small three-electric integrated bracket is arranged on the frame assembly and is positioned between the cab assembly and the front suspension assembly of the truck; the driving motor and the AMT assembly are arranged on the frame assembly, are positioned between the front suspension assembly and the rear suspension assembly and are arranged close to the front suspension assembly; the transmission shaft is rotatably arranged between the driving motor, the AMT assembly and the rear suspension assembly.

Through the structure, the power conversion assembly is converted from the original arrangement at the rear of the cab to the power conversion assembly which is arranged at the two sides of the frame assembly, so that the gravity center of the whole vehicle can be reduced by the side power conversion assembly, the driving stability is improved, the distance from the cab is far, the safety is improved, the power conversion assembly is changed from the original arrangement to the arrangement which occupies 1000-1200 mm of the upper cargo box to the arrangement which does not occupy the upper cargo box, and the space of the cargo box is further improved. In addition, the electric components of the electric truck core are integrated and arranged through the small three-electric integrated bracket, so that not only can the installation of each electric component be convenient, but also the wiring difficulty is greatly reduced, the integration of the chassis structure is good, the safety is high, the protection of each component is convenient, the utilization rate of the chassis space is improved, and the standardized and modularized assembly can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of the left side of an electric truck according to the present utility model;

fig. 2 is a front view of the right side of the electric truck according to the present utility model;

FIG. 3 is a top view of an electric truck chassis provided by the present utility model;

FIG. 4 is a top view of a power conversion assembly according to the present utility model;

FIG. 5 is a front view of the power conversion assembly of the present utility model;

FIG. 6 is a side view of a power conversion assembly according to the present utility model;

FIG. 7 is a front view of a battery thermal management and control system integrated bracket according to the present utility model;

FIG. 8 is a top view of a battery thermal management and control system integrated bracket according to the present utility model;

FIG. 9 is a side view of a battery thermal management and control system integration bracket provided by the present utility model;

FIG. 10 is a schematic diagram of a small three-electric integrated bracket according to the present utility model;

fig. 11 is a flowchart of the battery replacement of the electric truck according to the present utility model.

Wherein:

01-cab assembly,

1-frame assembly, 11-front suspension assembly, 12-rear suspension assembly, 13-steering gear, 14-insect-proof net, 15-condenser, 16-heat radiation water tank,

2-power-changing assembly, 21-first power-changing assembly, 211-first power-changing assembly bracket, 212-first battery box, 22-second power-changing assembly, 221-second power-changing assembly bracket, 222-second battery box, 223-piezoelectric bottle frame assembly, 224-combined air reservoir assembly, 225-upper step handrail, 23-beam bracket, 24-quick-changing connector, 25-breaking box, 26-cylinder, 27-locking pin,

3-battery thermal management and control system integrated bracket, 31-battery thermal management and control system integrated bracket body, 32-battery cooling unit, 33-controller upper bracket, 34-battery junction box, 35-battery control box, 36-charging port bracket, 37-MSD switch, 38-charging port,

4-small three-electric integrated bracket, 41-small three-electric integrated bracket body, 42-electric air conditioner compressor, 43-all-in-one controller, 44-electric air compressor, 45-whole vehicle controller, 46-driving motor controller, 47-electric steering oil pump, 48-movable oil pot bracket, 481-movable oil pot, 49-electric motor electric control cooling kettle bracket, 491-electric motor electric control cooling kettle,

5-driving motor, AMT assembly, 6-transmission shaft, 7-high voltage wire harness, 8-cooling water pipe.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

The embodiment of the application provides an electric truck chassis, locates the bottom of freight train, can refer to description figure 1 to figure 11, includes: the frame assembly 1 is provided with a front suspension assembly 11 at one end and a rear suspension assembly 12 at the other end; the power conversion assembly 2 comprises a first power conversion assembly 21 and a second power conversion assembly 22, wherein the first power conversion assembly 21 and the second power conversion assembly 22 are respectively arranged on two sides of the frame assembly 1 and are positioned between the front suspension assembly 11 and the rear suspension assembly 12; the battery thermal management and control system integrated bracket 3 is arranged on one side of the frame assembly 1, provided with the first power conversion assembly 21, and is positioned between the front suspension assembly 11 and the first power conversion assembly 21; the small three-electric integrated bracket 4 is arranged on the frame assembly 1 and is positioned between the cab assembly 01 and the front suspension assembly 11 of the truck; the driving motor and AMT assembly 5 is arranged on the frame assembly 1, is positioned between the front suspension assembly 11 and the rear suspension assembly 12, and is arranged close to the front suspension assembly 11; the transmission shaft 6 is rotatably arranged between the driving motor and the AMT assembly 5 and the rear suspension assembly 12.

It should be noted that, the electric truck chassis provided in this embodiment of the present application is a side-replacement electric truck chassis, and the first power conversion assembly 21 and the second power conversion assembly 22 of the power conversion assembly 2 are respectively disposed on two sides of the frame assembly 1, so as to reduce the center of gravity of the whole truck, improve the running stability, and increase the space of the cargo box. The electric truck is provided with a battery management system for monitoring the electric quantity of the battery, an icon can be displayed on an instrument panel, a driver is reminded to go to a power exchange station to replace a battery pack, as shown in an attached drawing 11 of the specification, the power exchange station is used for collecting vehicle information, verifying the identity of the vehicle, detecting whether the position of the vehicle meets the power exchange requirement, after the condition that the vehicle meets the power exchange requirement is detected, the driver can start to send a power exchange instruction by one key in the cab to complete the power exchange work, the power exchange locking mechanism is automatically locked, the vehicle is driven away from the power exchange station, the power exchange operation is completed quickly within a few minutes, the power exchange mode is high in efficiency, the service life of the battery is prolonged, the power exchange mode is more suitable for the requirements of high-frequency operation vehicles of commercial vehicles, the vehicle operation efficiency is improved, and the operation cost is reduced. In addition, the battery replacement operator can perform centralized specialized management operation on the battery, and the cost is reduced.

The electric components of the electric truck core are integrally arranged through the arrangement of the small three-electric integrated bracket 4, so that the components are reasonably arranged, high in integration level and high in safety, and standardized and modularized assembly can be realized. The safety management system of the plug-in type high-voltage electrical appliance and the integrated design of the wire harness and the terminal of the high-voltage wire harness 7 are adopted, so that the safety and the reliability of the connector and the wire harness of the high-voltage electrical appliance are greatly improved. The AMT is an electric control mechanical automatic transmission, has the advantage of automatic speed change of a hydraulic automatic transmission, and simultaneously retains the advantages of high efficiency, low cost and good manufacturing of gear rotation of a manual transmission. The chassis driving motor in the driving motor and AMT assembly 5 absorbs braking energy and feeds the braking energy back to the battery pack for storage, in order to recover regenerative braking energy to the maximum extent, the control strategy determines to preferentially regeneratively brake by the motor, and when the motor cannot meet the braking strength of the whole vehicle or the battery SOC reaches the maximum limit value, mechanical braking participates in working, so that the reliability of the braking process is ensured.

As shown in fig. 3 to 5 of the specification, a beam bracket 23 is arranged between the first power exchanging assembly 21 and the second power exchanging assembly 22, the first power exchanging assembly 21 is provided with a first power exchanging assembly bracket 211 and a first battery box 212, the second power exchanging assembly 22 is provided with a second power exchanging assembly bracket 221 and a second battery box 222, and the number of the first battery box 212 and the second battery box 222 is set to be a plurality.

The beam brackets 23 are disposed at both ends of the power exchanging assembly 2, and connect the first power exchanging assembly bracket 211 and the second power exchanging assembly bracket 221, so that the structural strength of the brackets can be enhanced. The battery boxes with different numbers can be arranged according to the wheelbase change of the electric truck by the battery exchange assembly 2, so that customer requirements are met, and the specific implementation manner provided by the application is taken as an example, the first battery boxes 212 arranged in the first battery exchange assembly 21 and the second battery boxes 222 arranged in the second battery exchange assembly 22 are four and are divided into two layers.

The first power exchanging assembly 21 and the second power exchanging assembly 22 further comprise a quick-change connector 24 and a breaking box 25, wherein the quick-change connector 24 is respectively arranged at two ends of the first power exchanging assembly bracket 211 and the second power exchanging assembly bracket 221, and the breaking box 25 is arranged between the plurality of first battery boxes 212 and the plurality of second battery boxes 222.

The quick-change connector 24 is divided into a female and a male, which are separated and combined during the power change process to be able to transfer current. The breaking boxes 25 are arranged between the horizontally distributed battery boxes to separate the battery packs, and the arrangement of the breaking boxes 25 can prevent potential safety hazards caused by the fact that the first power exchange assembly 21 and the second power exchange assembly 22 are not synchronous in the power exchange process.

As shown in fig. 4 to 6 of the specification, the first power exchanging assembly bracket 211 and the second power exchanging assembly bracket 221 are further provided with a plurality of cylinders 26 and a plurality of locking pins 27 at both ends thereof, respectively, and the cylinders 26 drive the locking pins 27 to move.

The cylinder 26 drives the locking pin 27 to move, so that the battery pack is limited and locked, and the safety is ensured. When the battery pack needs to be replaced, the whole vehicle controller 45 controls the electromagnetic valve to be switched on and off, and the air source is provided for the air cylinder 26 to release the locking of the side plug type locking pin 27 to the locking cushion block, so that the fixation of the battery box of the battery replacement can be released, the battery pack can be lifted and taken out, and the connector at the battery pack end is separated from the connector at the vehicle-mounted battery replacement base end, so that the battery replacement requirement is realized. Taking the specific embodiment provided in the application as an example, six cylinders 26 are respectively installed at one ends of the first power exchanging assembly 21 and the second power exchanging assembly 22 to control the locking pins 27, and of course, the specific number and positions of the cylinders 26 can be set according to practical situations.

As shown in fig. 7 to 9 of the specification, the integrated battery management and control system bracket 3 includes a integrated battery management and control system bracket body 31, a battery cooling unit 32 is disposed in the integrated battery management and control system bracket body 31, a controller upper bracket 33 is disposed on the top surface of the integrated battery management and control system bracket body 31, and a battery junction box 34, a battery control box 35 and a charging port bracket 36 are disposed on the controller upper bracket 33.

The battery cooling unit 32, the upper controller bracket 33, the battery junction box 34, the battery control box 35 and the charging port bracket 36 are all arranged on the integrated battery thermal management and control system bracket body 31, the integration level is high, the connection of high-voltage wires is convenient, the cost of the whole vehicle is reduced, and in order to facilitate the trend fixation of the high-voltage wires, a wire harness mounting hole is reserved on the integrated battery thermal management and control system bracket body 31. The controller upper bracket 33 may be pre-assembled with the battery terminal box 34, the battery control box 35, and assembled together to the battery thermal management and control system integrated bracket body 31 after the battery cooling unit 32 is assembled.

The side of the battery junction box 34 is provided with an MSD switch 37, and the top surface of the charging port bracket 36 is provided with a charging port 38.

The MSD switch 37, i.e. the manual maintenance switch, is a key component for ensuring high-voltage electrical safety of the electric vehicle. The MSD switch 37 on the battery junction box 34 is arranged outwards, so that the high-voltage MSD switch 37 is conveniently disconnected when an emergency situation occurs or the whole vehicle is overhauled, and the high-voltage of the whole vehicle is cut off, so that a safety protection effect is realized. The skin corresponding to the position is provided with a battery junction box safety switch access door which is in a closed state under normal conditions and is provided with a push type lock catch, so that the MSD switch 37 is prevented from being exposed to the outside and is operated by an unknowing person by mistake, and when the MSD switch 37 needs to be plugged and unplugged, the push type lock catch is operated firstly to open the door. The whole process is simple, convenient and safe to operate. The charging port 38 is mounted on the battery thermal management and control system integrated bracket body 31 through the charging port bracket 36, so that the driver can park and charge the battery. The covering corresponding to the position is provided with a battery charging door which is in a closed state under normal conditions and is provided with a push type lock catch, so that the effect of protecting the charging port 38 is achieved, and the charging port 38 is prevented from being exposed outside and is misoperated by an unknowing person.

As shown in fig. 10 of the specification, the small tri-electric integrated bracket 4 comprises a small tri-electric integrated bracket body 41, and an electric air conditioner compressor 42, an all-in-one controller 43, an electric air compressor 44, a whole vehicle controller 45, a driving motor controller 46, an electric steering oil pump 47, a movable steering oil pot bracket 48 and a motor electric control cooling water pot bracket 49 are arranged on the small tri-electric integrated bracket body 41.

The small three-electric integrated bracket 4 is arranged in an integrated way, the arrangement is compact and reasonable, the wire harness fixing support and the water pipe fixing support are welded on the small three-electric integrated bracket body 41, the high-voltage wire harness 7 and the cooling water pipe 8 are conveniently arranged, the whole arrangement is simple, and the standardization and the modularization assembly are conveniently realized. The driving motor and the AMT assembly 5 are arranged behind the small three-electric integrated bracket 4, the driving motor controller 46 is arranged right in front of the driving motor and the AMT assembly 5, and as the wiring port of the three phase line of the motor faces forward, the wiring is convenient, the assembly is facilitated, and the driving motor and the AMT assembly 5 are connected to the frame assembly 1 through the arranged suspension bracket. The driving motor and AMT assembly 5 is connected with the input end of the rear axle through a transmission shaft 6, and the driving motor is connected with a high-voltage control box of the high-voltage battery through a high-voltage and low-voltage wire harness.

The movable rotary oil pot bracket 48 is provided with a movable rotary oil pot 481, the motor electric control cooling kettle bracket 49 is provided with a motor electric control cooling kettle 491, and the electric steering oil pump 47 is arranged at a position close to the movable rotary oil pot 481.

The movable rotary oil pot 481 is connected to the small three-electric integrated bracket body 41 through the movable rotary oil pot bracket 48, so that the arrangement of the movable rotary oil pot 481 is facilitated, and the whole arrangement of the small three-electric integrated bracket 4 is compact and reasonable. The motor electric control cooling kettle 491 is connected to the frame assembly 1 through a motor electric control cooling kettle bracket 49. The cab assembly 01 is turned up, and a person can supplement the cooling liquid by standing on the ground, so that the convenience and the labor saving are realized. The steering system is a dual source control, and in order to facilitate the connection of the steering oil pipe, the electric steering oil pump 47 is arranged just below the small three-electric integration bracket 4, approaching and moving the steering pot 481.

One side of the frame assembly 1, on which the second power exchanging assembly 22 is arranged, is also provided with a low-voltage electric bottle frame assembly 223, a combined air reservoir assembly 224 and an upper car stepping handrail 225, wherein the low-voltage electric bottle frame assembly 223, the combined air reservoir assembly 224 and the upper car stepping handrail 225 are all arranged between the second power exchanging assembly 22 and the front suspension assembly 11 and are close to the second power exchanging assembly 22, the combined air reservoir assembly 224 is arranged at the bottom of the low-voltage electric bottle frame assembly 223, and the upper car stepping handrail 225 is optionally arranged on the low-voltage battery frame assembly 223.

The combined air cylinder assembly 224 is fixed under the piezoelectric bottle frame assembly 223, and the boarding step handrail 225 is installed on the piezoelectric bottle frame assembly 223, and the boarding step handrail 225 is selectively installed according to configuration, and is integrally arranged. The combined air cylinder assembly 224 is arranged under the piezoelectric bottle frame assembly 223, the space inside the frame assembly 1 is fully utilized, and an arrangement space is reserved between the front suspension assembly 11 of the frame assembly 1 and the piezoelectric bottle frame assembly 223, so that accessories are conveniently arranged.

The frame assembly 1 is provided with a steering gear 13, an insect-proof net 14, a condenser 15 and a heat radiation water tank 16 between the end face near one end of the cab assembly 01 and the small three-electric integrated bracket 4.

An insect-proof net 14, a condenser 15, a radiating water tank 16, a small three-electric integrated bracket 4, a driving motor, an AMT assembly 5 and a transmission shaft 6 are sequentially arranged from a first cross beam at the front end of the frame assembly 1. The combined air reservoir assembly 224, the dryer, the condenser 15, the brake valve assembly and the like are arranged on the inner side of the frame assembly 1, so that the space inside the frame assembly 1 is fully utilized, and components of the brake system are adjacent, so that the brake pipeline is convenient to connect.

It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The electric truck chassis provided by the application is described above in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

Claims

1. An electric truck chassis locates the bottom of freight train, its characterized in that includes:

a frame assembly (1), one end of which is provided with a front suspension assembly (11) and the other end of which is provided with a rear suspension assembly (12);

the power conversion assembly (2) comprises a first power conversion assembly (21) and a second power conversion assembly (22), wherein the first power conversion assembly (21) and the second power conversion assembly (22) are respectively arranged on two sides of the frame assembly (1) and are positioned between the front suspension assembly (11) and the rear suspension assembly (12);

the battery thermal management and control system integrated bracket (3) is arranged on one side of the frame assembly (1) where the first power conversion assembly (21) is arranged and is positioned between the front suspension assembly (11) and the first power conversion assembly (21);

the small three-electricity integrated bracket (4) is arranged between the frame assembly (1) and the cab assembly (01) and the front suspension assembly (11) of the truck;

the driving motor and AMT assembly (5) is arranged on the frame assembly (1), is positioned between the front suspension assembly (11) and the rear suspension assembly (12), and is arranged close to the front suspension assembly (11);

the transmission shaft (6) is rotatably arranged between the driving motor and the AMT assembly (5) and the rear suspension assembly (12).

2. The electric truck chassis according to claim 1, characterized in that a beam bracket (23) is arranged between the first power exchanging assembly (21) and the second power exchanging assembly (22), the first power exchanging assembly (21) is provided with a first power exchanging assembly bracket (211) and a first battery box (212), the second power exchanging assembly (22) is provided with a second power exchanging assembly bracket (221) and a second battery box (222), and the number of the first battery box (212) and the number of the second battery boxes (222) are all multiple.

3. The electric truck chassis according to claim 2, characterized in that the first power exchanging assembly (21) and the second power exchanging assembly (22) further comprise a quick-change connector (24) and a breaking box (25), the quick-change connector (24) is respectively arranged at two ends of the first power exchanging assembly bracket (211) and the second power exchanging assembly bracket (221), and the breaking box (25) is arranged between a plurality of the first battery boxes (212) and between a plurality of the second battery boxes (222).

4. A chassis according to claim 3, characterized in that the two ends of the first power exchanging assembly bracket (211) and the second power exchanging assembly bracket (221) are further provided with a plurality of air cylinders (26) and a plurality of locking pins (27), respectively, and the air cylinders (26) drive the locking pins (27) to move.

5. The electric truck chassis according to claim 1, wherein the battery thermal management and control system integrated bracket (3) comprises a battery thermal management and control system integrated bracket body (31), a battery cooling unit (32) is arranged in the battery thermal management and control system integrated bracket body (31), a controller upper bracket (33) is arranged on the top surface of the battery thermal management and control system integrated bracket body (31), and a battery junction box (34), a battery control box (35) and a charging port bracket (36) are arranged on the controller upper bracket (33).

6. The electric truck chassis according to claim 5, characterized in that the side of the battery junction box (34) is provided with an MSD switch (37), and the top surface of the charging port bracket (36) is provided with a charging port (38).

7. The electric truck chassis according to claim 1, wherein the small three-electric integrated bracket (4) comprises a small three-electric integrated bracket body (41), and an electric air conditioner compressor (42), an all-in-one controller (43), an electric air compressor (44), a whole truck controller (45), a driving motor controller (46), an electric steering oil pump (47), a movable oil pot bracket (48) and a motor electric control cooling kettle bracket (49) are arranged on the small three-electric integrated bracket body (41).

8. The electric truck chassis according to claim 7, wherein a movable oil turning pot (481) is provided on the movable oil turning pot support (48), a motor electric control cooling kettle (491) is provided on the motor electric control cooling kettle support (49), and the electric steering oil pump (47) is provided at a position close to the movable oil turning pot (481).

9. The electric truck chassis according to claim 1, wherein one side of the frame assembly (1) where the second power exchanging assembly (22) is arranged is further provided with a low-voltage battery frame assembly (223), a combined air reservoir assembly (224) and an upper pedal handrail (225), the low-voltage battery frame assembly (223), the combined air reservoir assembly (224) and the upper pedal handrail (225) are all arranged between the second power exchanging assembly (22) and the front suspension assembly (11) and are close to the second power exchanging assembly (22), the combined air reservoir assembly (224) is arranged at the bottom of the low-voltage battery frame assembly (223), and the upper pedal handrail (225) is optionally arranged on the low-voltage battery frame assembly (223).

10. The electric truck chassis according to claim 1, characterized in that the frame assembly (1) is provided with a steering gear (13), an insect-proof net (14), a condenser (15) and a radiator tank (16) between the end face near one end of the cab assembly (01) and the small three-electric integrated bracket (4).