CN115610512A

CN115610512A - Vehicle chassis structure and electric vehicle

Info

Publication number: CN115610512A
Application number: CN202211351324.0A
Authority: CN
Inventors: 彭松林; 谭小康; 陈斌
Original assignee: Sany Electric Vehicle Technology Co Ltd
Current assignee: Sany Electric Vehicle Technology Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-17

Abstract

The invention relates to the technical field of chassis structures, and provides a vehicle chassis structure and an electric vehicle, wherein the vehicle chassis structure comprises a frame, the front section of the frame is provided with an installation support, the front section of the frame is used for installing a cab, when the cab is installed on the front section of the frame, the installation support is positioned below the cab and is arranged above the frame, high-voltage accessory modules and high-voltage control modules are uniformly distributed on the installation support, and a power assembly is arranged on the frame below the high-voltage control modules; the middle section of the frame is provided with a first high-voltage battery frame, a second high-voltage battery frame and a third high-voltage battery frame which are used for installing a power battery, and the first high-voltage battery frame, the second high-voltage battery frame and the third high-voltage battery frame are connected to the outer side of the frame through first connecting pieces respectively. The invention has compact structural arrangement, improves the utilization of the space of the chassis and is convenient for maintenance and overhaul.

Description

Vehicle chassis structure and electric vehicle

Technical Field

The invention relates to the technical field of chassis structures, in particular to a vehicle chassis structure and an electric vehicle.

Background

In most of conventional pure electric vehicle chassis, an engine is replaced by a motor on the basis of a fuel vehicle chassis, and then a power battery is arranged to realize the electric operation of the vehicle.

Because the volume of an electric drive system is far smaller than that of an engine and a gearbox, the chassis of most of the conventional pure electric engineering vehicles adopts a middle rear drive (a motor is arranged in the middle of the chassis), and a power battery is arranged on a frame below a cab to realize vehicle electromotion. However, this method occupies a large space of the chassis structure, and the chassis has the following unreasonableness:

1. the high-voltage components of the whole vehicle are distributed, the space utilization rate of the chassis is low, and the maintenance is inconvenient;

2. the motor is arranged in the middle, so that the maintenance is inconvenient, and the arrangement of the power transfer module is not facilitated.

Disclosure of Invention

The invention provides a vehicle chassis structure and an electric vehicle, which are used for solving the defect of low utilization rate of a chassis space in the prior art.

In a first aspect, the present invention provides a vehicle chassis structure comprising: the front section of the frame is used for mounting a cab, when the cab is mounted on the front section of the frame, the mounting bracket is positioned below the cab, and the mounting bracket is arranged above the frame; the mounting bracket is uniformly provided with a high-voltage accessory module and a high-voltage control module, and the frame below the high-voltage control module is provided with the power assembly;

the middle section of the frame is provided with a first high-voltage battery frame, a second high-voltage battery frame and a third high-voltage battery frame which are used for installing a power battery, and the first high-voltage battery frame, the second high-voltage battery frame and the third high-voltage battery frame are respectively connected to the outer side of the frame through first connecting pieces.

According to the vehicle chassis structure provided by the invention, the first high-voltage battery frame, the second high-voltage battery frame and the third high-voltage battery frame are respectively provided with at least two layers, and the power battery is placed on each layer.

According to the vehicle chassis structure provided by the invention, the middle section of the frame is also provided with the high-voltage battery control module, and the high-voltage battery control module is connected to the outer side of the frame through the second connecting piece and is arranged opposite to the third high-voltage battery frame.

According to the vehicle chassis structure provided by the invention, a first driving shaft, a second driving shaft, a third driving shaft and a fourth driving shaft for mounting wheels are sequentially arranged from the front section of the frame to the rear section of the frame; the first high-voltage battery frame, the second high-voltage battery frame, the third high-voltage battery frame and the high-voltage battery control module are all arranged on the frame between the second driving shaft and the third driving shaft.

According to the vehicle chassis structure provided by the invention, the vehicle chassis structure further comprises a parking air cylinder, a first driving air cylinder and a second driving air cylinder, wherein the first driving air cylinder is arranged on the inner side of the vehicle frame between the first driving shaft and the second driving shaft, the parking air cylinder is arranged on the inner side of the vehicle frame between the second driving shaft and the third driving shaft, and the second driving air cylinder is arranged on the inner side of the vehicle frame close to the third driving shaft.

According to the vehicle chassis structure provided by the invention, the vehicle chassis structure further comprises an electric steering oil pump, wherein the electric steering oil pump is arranged on the inner side of the vehicle frame between the first driving shaft and the second driving shaft and is opposite to the first driving air cylinder.

According to the vehicle chassis structure provided by the invention, the cooling module is arranged in front of the frame and comprises a radiator, a motor cooling water pump and a battery cooling water pump, the radiator is arranged at the front end of the frame, and the motor cooling water pump and the battery cooling water pump are both connected to the mounting bracket.

According to the vehicle chassis structure provided by the invention, the vehicle chassis structure further comprises a charging port, and the charging port is connected with the cooling module through a bracket.

The vehicle chassis structure further comprises a low-voltage element module, wherein the low-voltage element module comprises a storage battery and a vehicle control unit, the storage battery is arranged on the outer side of the vehicle frame between the first driving shaft and the second driving shaft, and the vehicle control unit is arranged on the mounting bracket.

According to the vehicle chassis structure provided by the invention, the high-voltage control module comprises an all-in-one control module and a motor controller, the all-in-one control module is used for being electrically connected with a plurality of high-voltage elements in the high-voltage accessory module, and the motor controller is electrically connected with the power assembly.

According to the vehicle chassis structure provided by the invention, the high-voltage battery control module comprises a battery junction box, a battery control box and a power conversion device, wherein the battery control box and the battery junction box are electrically connected with the power battery, and the power conversion device is respectively electrically connected with the battery junction box and the all-in-one control module.

According to the vehicle chassis structure provided by the invention, the high-voltage accessory module comprises an electric air compressor, an air conditioner PTC controller and a motor cooling water pump, and the electric air compressor, the air conditioner PTC controller and the motor cooling water pump are all connected to the mounting bracket.

In a second aspect, the present invention also provides an electric vehicle including the vehicle chassis structure as described in the first aspect.

According to the vehicle chassis structure provided by the invention, the mounting bracket is arranged above the front section of the vehicle frame, and the high-voltage accessory module and the high-voltage control module are mounted on the vehicle frame through the mounting bracket, so that the structural arrangement is compact, the high-voltage accessory module and the high-voltage control module on the mounting bracket can be conveniently overhauled, and when the cab is mounted at the front section of the vehicle frame, the high-voltage accessory module and the high-voltage control module on the mounting bracket can be overhauled after the cab is turned over, the overhaul convenience of high-voltage electric components is improved, and the problem that the parts above can be overhauled only when the parts above are dispersedly arranged or arranged in layers on the chassis in the prior art is solved. Through setting up the power assembly on the frame of high pressure control module below, realized setting up the power assembly at the frame anterior segment, be favorable to arranging the transfer module in the frame middle part. Through the outside high-voltage battery frame group who is used for installing power battery that sets up in the both sides in frame middle section, do not occupy the space of frame, can follow outside direct overhaul, dismouting high-voltage battery frame, and because high-voltage battery frame mount is in the outside of frame, do not receive the restriction of frame inner space, with the power battery of assembling different quantity and different types, satisfy the different demands of different vehicles to the electric quantity, also realized installing the transfer module at the frame middle part, the utilization ratio in chassis space has been promoted, thereby satisfy the individualized demand of user to chassis structure space utilization.

The invention also provides an electric vehicle which simultaneously comprises all the advantages of the vehicle chassis structure. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the vehicle chassis structure, and is not described herein again.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electric vehicle chassis provided by an embodiment of the invention;

FIG. 2 is a partial schematic structural diagram of an electric vehicle chassis provided by an embodiment of the invention;

FIG. 3 is a left side view of a front section of the frame provided by an embodiment of the present invention;

FIG. 4 is a right side view of a front section of a vehicle frame provided by an embodiment of the present invention.

Reference numerals:

10. a frame; 11. a frame rail; 12. a first drive shaft; 13. a second drive shaft; 14. a third drive shaft; 15. a fourth drive shaft; 16. a spare tire;

20. mounting a bracket; 21. an electric air compressor; 22. an air conditioning compressor; 23. an air conditioner PTC controller; 24. a motor cooling water pump; 25. an all-in-one control module; 26. a motor controller; 27. a battery cooling water pump; 28. a vehicle control unit;

30. a first high-voltage battery frame; 31. a second high-voltage battery frame; 32. a third high-voltage battery frame; 33. a high voltage battery control module;

40. a heat sink; 50. a charging port;

60. a first vehicle air cylinder; 61. a second travelling crane air cylinder; 62. parking the air cylinder;

70. a storage battery; 80. an electric steering oil pump; 90. and a power assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A vehicle chassis structure and an electric vehicle provided in an embodiment of the invention are described below with reference to fig. 1 to 4.

The present embodiment provides a vehicle chassis structure including a vehicle frame 10.

Frame 10 may be a rectangular frame formed by splicing two frame rails 11 and a plurality of frame 10 cross members.

When the cab is installed at the front section of the frame 10, the mounting bracket 20 is positioned below the cab, and the mounting bracket 20 is connected above the frame 10; the high-voltage accessory module and the high-voltage control module are uniformly distributed on the mounting bracket 20, and the power assembly 90 is arranged on the frame 10 below the high-voltage control module.

The middle section of the frame 10 is provided with a first high-voltage battery frame 30, a second high-voltage battery frame 31 and a third high-voltage battery frame 32 for installing power batteries, and the first high-voltage battery frame 30, the second high-voltage battery frame 31 and the third high-voltage battery frame 32 are respectively connected to the outer side of the frame 10 through first connecting pieces.

Through the scheme, the vehicle chassis structure provided by the invention has the advantages that the mounting bracket 20 is arranged above the front section of the vehicle frame 10, and the high-voltage accessory module and the high-voltage control module are mounted on the vehicle frame 10 through the mounting bracket 20, so that the structural arrangement is compact, the high-voltage accessory module and the high-voltage control module on the mounting bracket 20 can be directly overhauled, the overhauling convenience of high-voltage electric parts is improved, and the problem that parts positioned above need to be firstly dismantled to overhaul the parts below when maintenance is carried out due to the dispersed arrangement or layered arrangement of the parts on the chassis in the prior art is solved. By arranging the power assembly 90 on the frame 10 below the high-voltage control module, the power assembly 90 is arranged at the front section of the frame 10, and the middle of the frame 10 is favorable for arranging a transfer module. Through the outside a plurality of high voltage battery frames that are used for installing power battery that set up in the both sides in frame 10 middle section, make it not occupy the space of frame 10, can follow outside direct maintenance, dismouting high voltage battery frame, and because high voltage battery frame mount is in the outside of frame 10, do not receive the restriction of frame 10 inner space, the structure of high voltage battery frame can set up according to actual need, with the power battery of assembling different quantity and different shape kind, satisfy the demand of different vehicles, also realized can be at frame 10 mid-mounting transfer module, the utilization ratio in chassis space has been promoted, thereby satisfy the individualized demand of user to the utilization of chassis structure space.

The first high-voltage battery frame 30, the second high-voltage battery frame 31 and the third high-voltage battery frame 32 are at least two layers, and each layer is provided with a power battery.

Referring to fig. 3, the mounting bracket 20 may adopt a frame structure, which can improve a large mounting space, ensure that each component can be mounted, ensure that the high-voltage accessory module and the high-voltage control module are compactly integrated on the mounting bracket 20, fully utilize the space, and cannot shield each other to affect maintenance, and the integrated arrangement can further reduce the lengths of pipelines and lines, simplify the structure, and save the cost. Good heat dissipation performance can also be ensured by adopting the frame structure, so that each part connected to the mounting bracket 20 is in contact with air, and heat is dissipated in time.

Alternatively, powertrain 90 includes a drive motor that may be mounted to the inside of frame 10, i.e., between two frame rails 11 of frame 10, via a suspension arrangement to improve the utilization of the chassis space, and located below the inside of frame 10 to lower the center of gravity of the chassis structure.

In the present embodiment, the first high voltage battery frame 30 and the second high voltage battery frame 31 are connected to both sides of the vehicle frame 10 by first connection members, respectively, and the third high voltage battery frame 32 is connected to an outer side of the vehicle frame 10 and adjacent to the second high voltage battery frame 31 by the first connection members.

So set up, realized that high-voltage battery frame adopts the mode of side-hanging connection to install in the outside of frame 10, do not occupy the space of frame 10, can follow outside direct overhaul, dismouting high-voltage battery frame, also realized installing the transfer module on frame 10, promoted the utilization ratio in chassis space.

Wherein, third high voltage battery frame 32 can set up according to actual need to this satisfies the demand of different vehicles to the electric quantity, and the number of piles of high voltage battery frame also can set up according to actual need, with the power battery of assembling different quantity, the power battery that the number of piles was more placed is more.

In some embodiments, the first high voltage battery frame 30 and the second high voltage battery frame 31 may be H-type battery frames, and the third high voltage battery frame 32 may be C-type battery frames, so that different types of batteries are selected according to different types of vehicles, for example, only two layers of the first high voltage battery frame 30 and the second high voltage battery frame 31 are provided; or, only the first high-voltage battery frame 30 and the second high-voltage battery frame 31 are provided, and are three layers; or, the first high-voltage battery frame 30, the second high-voltage battery frame 31 and the third high-voltage battery frame 32 are arranged in two layers, and so on, so that the application range of the chassis structure is widened.

Specifically, the high-voltage battery frame may be a square frame, the length and width of the high-voltage battery frame are set according to actual requirements, and the plurality of power batteries may be sequentially arranged along the length direction of the high-voltage battery frame, may also be sequentially arranged along the width direction of the high-voltage battery frame, and may also be sequentially arranged along the length direction and the width direction of the high-voltage battery frame.

In some embodiments, the high-voltage accessory module includes an electric air compressor 21, an air conditioner compressor 22, an air conditioner PTC controller 23, and a motor cooling water pump 24, and the electric air compressor 21, the air conditioner compressor 22, the air conditioner PTC controller 23, and the motor cooling water pump 24 are uniformly distributed on the mounting bracket 20.

As shown in fig. 3, in some embodiments, the high voltage control module includes an all-in-one control module 25 and a motor controller 26, the all-in-one control module 25 is disposed on the top of the mounting bracket 20, the all-in-one control module 25 is used for electrically connecting with a plurality of high voltage components in the high voltage accessory module, the motor controller 26 is disposed below the all-in-one control module 25 and above the power assembly 90, the motor controller 26 can be directly connected with the driving motor, the length of a connecting pipeline can be reduced, materials can be saved, the arrangement is more compact, and the circuit layout is optimized.

Control module through with a plurality of high-voltage component's control module is integrated to unify control module 25 more and install in the anterior segment of frame 10, thereby make and overhaul the position and can maintain labour saving and time saving more, swiftly convenient to the control module's of a plurality of high-voltage component maintenance. And the all-in-one control module 25 is arranged on the mounting bracket 20 above the frame 10, so that the maintenance operation of the all-in-one control module 25 is more convenient for maintenance personnel.

Optionally, the all-in-one control module 25 is an all-in-one controller. For example, the high-voltage elements of the chassis include a driving motor, an air conditioner PTC controller 23, an electric Power steering oil pump 80, a DCDC, and a Power Distribution Unit (PDU). If the driving motor, the air conditioner PTC controller 23, the electric steering oil pump 80, the DCDC, and the PDU are all connected to the all-in-one controller, the all-in-one controller is a five-in-one controller at this time. If three or four of the driving motor, the air conditioner PTC controller 23, the electric steering oil pump 80, the DCDC, and the PDU are connected to the all-in-one controller, the all-in-one controller is a three-in-one controller or a four-in-one controller, and so on.

In this embodiment, a high voltage battery control module 33 is further disposed in the middle section of the frame 10, and the high voltage battery control module 33 is connected to the outer side of the frame 10 through a second connecting member and is disposed opposite to the third high voltage battery frame 32.

The high-voltage battery control module 33 includes a housing, and a battery junction box, a battery control box and a power conversion device located in the housing, wherein the battery control box and the battery junction box are electrically connected to the power battery, and the power conversion device is connected to the battery junction box and the all-in-one controller.

So set up, because high voltage battery control module 33 arranges in the outside of frame 10, can make full use of the space on chassis to be close to the high voltage battery frame, can shorten the pencil of connection, reduced material cost, avoided the pencil trouble that long distance power supply probably arouses, also improved the power consumption safety. Meanwhile, due to the fact that the box cover is arranged on the outer side of the frame 10, maintenance personnel can directly open the box cover from the outer side, and accordingly the maintenance personnel can overhaul the outer side of the frame 10, and the maintenance is more convenient.

In some embodiments, the first and second connectors may be threaded connectors, for example, the first high voltage battery frame 30, the second high voltage battery frame 31, the third high voltage battery frame 32, and the high voltage battery control module 33 are all bolted to the outside of the vehicle frame 10.

In this embodiment, a first driving shaft 12, a second driving shaft 13, a third driving shaft 14 and a fourth driving shaft 15 for mounting wheels are sequentially arranged from the front section of the frame 10 to the rear section of the frame 10; the first high voltage battery frame 30, the second high voltage battery frame 31, the third high voltage battery frame 32 and the high voltage battery control module 33 are all disposed on the vehicle frame 10 between the second driving shaft 13 and the third driving shaft 14.

The first and

second drive shafts

12 and 13 are disposed at the front half of the frame 10 to serve as a front axle of the vehicle, and the third and

fourth drive shafts

14 and 15 are disposed at the rear half of the frame 10 to serve as a rear axle of the vehicle with the same steering relationship.

In this embodiment, a cooling module is arranged in front of the frame 10, the cooling module includes a radiator 40, a motor cooling water pump 24 and a battery cooling water pump 27, the radiator 40 is arranged at the front end of the frame 10, and the motor cooling water pump 24 and the battery cooling water pump 27 are both connected to the mounting bracket 20. The radiator 40 can be a plate heat exchanger and is located above the frame 10, so that the radiator 40 can be in contact with air flow better, heat can be transferred outwards conveniently, and a better radiating effect can be achieved.

In this embodiment, fluid pipelines are arranged in the first high-voltage battery frame 30, the second high-voltage battery frame 31 and the third high-voltage battery frame 32, the routing of the fluid pipelines should be distributed on each layer of each high-voltage battery frame, the fluid pipelines are connected to the battery cooling water pump 27, the battery cooling water pump 27 provides pressure for flowing of cooling liquid, so that the cooling liquid circularly flows, the power batteries in each high-voltage battery frame are cooled, accidents caused by overhigh temperature are prevented, and the driving safety is improved.

Further, referring to fig. 3 and 4, a charging port 50 is further provided, and the charging port 50 is connected to the radiator 40 of the cooling module through a bracket. So set up, reduced the height of mouthful 50 that charges, make to charge more convenient, the mouthful 50 that charges can be directly close to the department of charging, reduces the rifle line length requirement that charges, improves the vehicle ease for use.

In this embodiment, the vehicle further includes a parking air cylinder 62, a first driving air cylinder 60 and a second driving air cylinder 61, the first driving air cylinder 60 is disposed inside the vehicle frame 10 between the first driving shaft 12 and the second driving shaft 13, the parking air cylinder 62 is disposed inside the vehicle frame 10 between the second driving shaft 13 and the third driving shaft 14, that is, between the two frame rails 11, so as to fully utilize the space inside the vehicle frame 10, and the second driving air cylinder 61 is disposed inside the vehicle frame 10 near the third driving shaft 14, and may be connected to the first high voltage battery frame 30 or the second high voltage battery frame 31 through a bracket. And because the second driving air cylinder 61 is positioned near the rear steering axle of the vehicle, the gas conveying efficiency is improved, the response time of vehicle braking can be effectively shortened, and the driving safety is improved.

In some embodiments provided by the present invention, a low-voltage element module is further included, the low-voltage element module including a battery 70 and a vehicle control unit 28, wherein the battery 70 is disposed outside the vehicle frame 10 between the first drive shaft 12 and the second drive shaft 13, and the vehicle control unit 28 is disposed on the mounting bracket 20 behind the cooling module. With this arrangement, the space inside the vehicle frame 10 is fully utilized, and the vehicle controller 28 can be inspected while the high-voltage accessory module is being inspected.

Referring to fig. 2, an electric power steering oil pump 80 is further included, the electric power steering oil pump 80 being disposed inside the frame 10 between the first drive shaft 12 and the second drive shaft 13; the electric steering oil pump 80 is arranged opposite to the first traveling vehicle air cylinder 60, so that the space utilization rate is improved, and the structure is more compact.

In some embodiments, a spare tire 16 is disposed at a rear section of the frame 10, and the spare tire 16 may be fixed below the frame 10 by a connecting frame.

The embodiment also provides an electric vehicle which comprises the vehicle chassis structure. Specifically, the electric vehicle is a vehicle, including but not limited to an engineering vehicle, such as a pure electric concrete pump vehicle.

Contain the engineering vehicle of foretell chassis structure, top through at frame 10 anterior segment sets up installing support 20, pass through installing support 20 with high-pressure annex module and high-pressure control module and install on frame 10, the structural arrangement is compact, the length of pipeline has been reduced, be favorable to circuit layout and regularity, can realize can directly overhauing high-pressure annex module and high-pressure control module on installing support 20 after the driver's cabin upset, promote the maintenance convenience of high-pressure electrical component, spare part is arranged or the layering sets in the chassis dispersion among the prior art has been solved, lead to dismantling just can overhaul the problem to the spare part below with the spare part that lies in the top when carrying out maintenance. Meanwhile, the charging port 50 may be disposed under the passenger compartment of the front end mask of the cab, for convenience of charging.

Optionally, the mounting bracket 20 is located directly below the vehicle cab, and based on this, the high voltage accessory module and the high voltage control module are located in the coverage area below the cab, which can protect the cab from water short circuits when it is exposed to rain.

Moreover, the electric vehicle includes all the advantages of the vehicle chassis structure, and the description thereof is omitted.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A vehicle chassis structure, characterized by comprising: the front section of the frame (10) is provided with a mounting bracket (20), the front section of the frame (10) is used for mounting a cab, when the cab is mounted on the front section of the frame (10), the mounting bracket (20) is positioned below the cab, and the mounting bracket (20) is arranged above the frame (10); a high-voltage accessory module and a high-voltage control module are uniformly distributed on the mounting bracket (20), and a power assembly (90) is arranged on the frame (10) below the high-voltage control module;

the middle section of frame (10) is provided with first high voltage battery frame (30), second high voltage battery frame (31) and third high voltage battery frame (32) that are used for installing power battery, first high voltage battery frame (30), second high voltage battery frame (31) reach third high voltage battery frame (32) are connected through first connecting piece respectively the outside of frame (10).

2. The vehicle chassis structure according to claim 1, wherein the first high-voltage battery frame (30), the second high-voltage battery frame (31), and the third high-voltage battery frame (32) are each provided with at least two layers, the power battery being placed in each layer.

3. The vehicle chassis structure according to claim 1, wherein a high voltage battery control module (33) is further provided at a middle section of the frame (10), the high voltage battery control module (33) being connected to an outer side of the frame (10) by a second connection member and being disposed opposite to the third high voltage battery frame (32).

4. The vehicle chassis structure according to claim 1, wherein a first drive shaft (12), a second drive shaft (13), a third drive shaft (14), and a fourth drive shaft (15) for mounting wheels are provided in this order from a front section of the frame (10) to a rear section of the frame (10); the first high-voltage battery frame (30), the second high-voltage battery frame (31), the third high-voltage battery frame (32) and the high-voltage battery control module (33) are all arranged on the vehicle frame (10) between the second driving shaft (13) and the third driving shaft (14).

5. The vehicle chassis structure according to claim 4, further comprising a parking air cylinder (62), a first traveling air cylinder (60), and a second traveling air cylinder (61), the first traveling air cylinder (60) being disposed inside the vehicle frame (10) between the first driveshaft (12) and the second driveshaft (13), the parking air cylinder (62) being disposed inside the vehicle frame (10) between the second driveshaft (13) and the third driveshaft (14), the second traveling air cylinder (61) being disposed inside the vehicle frame (10) near the third driveshaft (14).

6. The vehicle chassis structure according to claim 5, further comprising an electric steering oil pump (80), the electric steering oil pump (80) being disposed inside the vehicle frame (10) between the first drive shaft (12) and the second drive shaft (13) and being disposed opposite the first traveling air cylinder (60).

7. The vehicle chassis structure according to claim 1, wherein a cooling module is provided in front of the vehicle frame (10), the cooling module including a radiator (40), a motor cooling water pump (24), and a battery cooling water pump (27), the radiator (40) being provided at a front end of the vehicle frame (10), the motor cooling water pump (24) and the battery cooling water pump (27) both being connected to the mounting bracket (20).

8. The vehicle chassis structure according to claim 7, further comprising a charging port (50), the charging port (50) being connected with the cooling module through a bracket.

9. The vehicle chassis structure according to claim 4, further comprising a low-voltage element module including a battery (70) and a vehicle control unit (28), the battery (70) being disposed outside the frame (10) between the first drive shaft (12) and the second drive shaft (13), the vehicle control unit (28) being disposed on the mounting bracket (20).

10. The vehicle chassis structure of claim 3, wherein the high voltage control module includes an all-in-one control module (25) and a motor controller (26), the all-in-one control module (25) for electrically connecting with a plurality of high voltage components in the high voltage accessory module, the motor controller (26) electrically connecting with the powertrain (90).

11. The vehicle chassis structure according to claim 10, wherein the high voltage battery control module (33) includes a battery junction box, a battery control box, and a power conversion device, the battery control box and the battery junction box are both electrically connected with the power battery, and the power conversion device is electrically connected with the battery junction box and the all-in-one control module (25), respectively.

12. The vehicle chassis structure according to claim 1, wherein the high-voltage accessory module includes an electric air compressor (21), an air conditioner compressor (22), and an air conditioner PTC controller (23), and the electric air compressor (21), the air conditioner compressor (22), and the air conditioner PTC controller (23) are all connected to the mounting bracket (20).

13. An electric vehicle characterized by comprising the vehicle chassis structure according to any one of claims 1 to 12.