Electric truck chassis and electric truck

Abstract

The present invention relates to the field of chassis, and provides an electric truck chassis and an electric truck, including a frame and an electric steering oil pump, an electric air compressor, a cooling system, an air conditioning compressor, a motor cooling assembly, a power battery cooling assembly, an air conditioning compressor controller, an electric air compressor controller, a motor controller, an electric steering oil pump controller, and a DC / DC. The electric steering oil pump and the electric air compressor are stacked up and down, the air conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller, and the DC / DC are integrated as a five-in-one controller, and the air conditioning compressor, the motor cooling assembly, and the power battery cooling assembly are integrated as an integrated liquid cooling system. This arrangement can effectively reduce the space occupied by the frame, so that the integrated liquid cooling system can be arranged on the frame.

Description

Technical Field

[0001] The present invention relates to the technical field of chassis, and in particular to an electric truck chassis and an electric truck. Background Art

[0002] The driving forms of the electric truck chassis are mainly 6×2 and 4×2, etc. 6×2 means six wheels, two of which are driving wheels. The electric truck chassis includes a frame, on which are arranged a motor, a gearbox, a transmission shaft, a drive axle, a battery mounting bracket, an electric air compressor, an air handling unit, a high- and low-voltage electronic component bracket, an air dryer, a power battery cooling air conditioner, a low-voltage battery, etc.

[0003] At present, in order to increase the load capacity of electric trucks, it is necessary to further increase the power of the motor and the capacity of the power battery, which requires further improvement in the cooling performance of the cooling device for cooling the motor and the power battery. As a result, the volume of the cooling device is bound to increase. The existing layout of the chassis of electric trucks can no longer meet the requirements of the larger cooling device, which hinders the increase in the load capacity of electric trucks.

[0004] Therefore, how to arrange a higher-power cooling device on the chassis of an electric truck becomes a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] The present invention provides an electric truck chassis, comprising a frame and an electric steering oil pump, an electric air compressor, a cooling system, an air conditioning compressor, a motor cooling assembly, a power battery cooling assembly, an air conditioning compressor controller, an electric air compressor controller, a motor controller, an electric steering oil pump controller and a DC / DC; wherein:

[0007] The electric steering oil pump and the electric air compressor are arranged in a vertical stack;

[0008] The air conditioning compressor, the motor cooling assembly and the power battery cooling assembly are integrated to form an integrated liquid cooling system;

[0009] The air-conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC are integrated to form a five-in-one controller.

[0010] According to the electric truck chassis provided by the present invention, a bracket is provided on the inner side of one end of the frame close to the front of the vehicle, the electric steering oil pump, the electric air compressor, and the integrated liquid cooling system are all arranged on the bracket, and the electric air compressor and the integrated liquid cooling system are arranged side by side along the width direction of the frame.

[0011] According to the electric truck chassis provided by the present invention, the five-in-one controller is arranged on a side of the bracket away from the front of the vehicle.

[0012] According to the electric truck chassis provided by the present invention, the cooling system comprises:

[0013] A radiator, the radiator being arranged on a side of the integrated liquid cooling system away from the rear of the vehicle;

[0014] A cooling fan is arranged on a side of the radiator away from the vehicle frame.

[0015] The electric truck chassis provided according to the present invention also includes a power battery system, which includes a power battery and a high-voltage distribution box. The power batteries are distributed on both sides of the frame along the width direction. The high-voltage distribution box is electrically connected to the power batteries, and the high-voltage distribution box is located on the front side of the power battery on one side, and the front side of the power battery on the other side is provided with a reserved space for installing a hydraulic oil tank.

[0016] The electric truck chassis provided according to the present invention further comprises at least one steering axle and at least two driving axles arranged at the bottom of the frame, and the steering axles and the driving axles are distributed along the length direction of the frame.

[0017] The electric truck chassis provided according to the present invention also includes a drive system, which includes a motor, a first transmission shaft and a second transmission shaft. The motor is arranged on the inner side of the frame, and the motor is connected to the front drive axle through the first transmission shaft. The second transmission shaft is arranged between two adjacent drive axles.

[0018] The electric truck chassis provided according to the present invention further includes a low-voltage battery, which is arranged on the outside of the frame.

[0019] The electric truck chassis provided according to the present invention further includes a protective device, which is arranged at the bottom of the frame and is used to cover the bracket and the five-in-one controller.

[0020] The present invention provides an electric truck, comprising the electric truck chassis as described above.

[0021] The electric truck chassis provided by the present invention includes a frame and an electric steering oil pump, an electric air compressor, a cooling system, an air conditioning compressor, a motor cooling assembly, a power battery cooling assembly, an air conditioning compressor controller, an electric air compressor controller, a motor controller, an electric steering oil pump controller and a DC / DC arranged on the frame and located in the area below the cab. Among them, the electric steering oil pump and the electric air compressor are stacked up and down, which can effectively utilize the vertical space of the frame and release the lateral space of the frame. The air conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC are integrated into a five-in-one controller. The integrated design of the five-in-one controller can reduce the space occupied by the controller and release the space of the frame. The air conditioning compressor, the motor cooling assembly and the power battery cooling assembly are integrated into an integrated liquid cooling system. The integrated design can improve the cooling performance while reducing the space occupied by the integrated liquid cooling system as much as possible. In addition, the arrangement of the electric steering oil pump, the electric air compressor and the five-in-one controller saves a part of the space, so that the integrated liquid cooling system with an increased volume can be arranged on the frame. The electric truck chassis provided by the present invention can be equipped with a larger-power, larger-volume integrated liquid cooling system, which can provide sufficient cooling capacity for higher-power motors and larger-capacity power batteries, thereby enabling an increase in the load capacity of the electric truck.

[0022] Furthermore, in the electric truck provided by the present invention, since the electric truck chassis as described above is provided, it has the same advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a front view of the chassis of an electric truck provided by an embodiment of the present invention;

[0025] Figure 2 is a top view of the chassis of an electric truck provided by an embodiment of the present invention;

[0026] Figure 3 is a top view of the front end of a frame provided by an embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of an integrated liquid cooling system provided by an embodiment of the present invention;

[0028] Figure 5is a position diagram of an electric steering oil pump and an electric air compressor provided in an embodiment of the present invention;

[0029] Reference numerals:

[0030] 1. Frame; 101. Left longitudinal beam; 102. Right longitudinal beam; 103. Cross beam; 2. Electric steering oil pump; 3. Electric air compressor; 4. Cooling system; 5. Air conditioning compressor; 6. Five-in-one controller; 7. Steering axle; 8. Drive axle; 910. Motor; 920. First transmission shaft; 930. Second transmission shaft; 10. Bracket; 11. First water pump; 12. Second water pump; 13. Plate heat exchanger; 1410. Power battery; 1420. High-voltage distribution box; 15. Low-voltage battery; 16. Protective device; 17. Cab; 18. Integrated liquid cooling system. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Combine the following Figures 1 to 5 The electric truck chassis and the electric truck of the present invention are described.

[0033] An embodiment of the present invention provides an electric truck chassis, including a frame 1 and an electric steering oil pump 2, an electric air compressor 3, a cooling system 4, an air-conditioning compressor 5, a motor cooling assembly, a power battery cooling assembly, an air-conditioning compressor controller, an electric air compressor controller, a motor controller, an electric steering oil pump controller and a DC / DC arranged on the frame 1.

[0034] The vehicle frame 1 includes a left longitudinal beam 101, a right longitudinal beam 102, and a plurality of cross beams 103 disposed between the left longitudinal beam 101 and the right longitudinal beam 102. It should be noted that the left longitudinal beam 101 and the right longitudinal beam 102 extend in the front-rear direction of the vehicle, and after the cross beam 103 is disposed between the left longitudinal beam 101 and the right longitudinal beam 102, the vehicle frame 1 forms a frame structure.

[0035] It should be noted that front refers to the direction of the front of the vehicle, and rear refers to the direction of the rear of the vehicle.

[0036] The top of the frame 1 near the front end is used to set the cab 17, and the top of the frame 1 located behind the cab 17 is used to set the upper part of the truck, such as a carriage.

[0037] In some embodiments of the present invention, the electric steering oil pump 2, the electric air compressor 3, the cooling system 4, the air-conditioning compressor 5, the motor cooling assembly, the power battery cooling assembly, the air-conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC are all arranged on the frame 1 and are located in the area below the cab 17.

[0038] The electric steering oil pump 2 and the electric air compressor 3 may be stacked up and down, so that the electric steering oil pump 2 and the electric air compressor 3 can effectively utilize the longitudinal space of the frame 1 and release the lateral space of the frame 1.

[0039] The air conditioner compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC can be integrated to form a five-in-one controller 6. The integrated design can make the layout of the air conditioner compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC more compact, reduce the space occupied by the frame 1, and further release the space of the frame 1.

[0040] The air-conditioning compressor 5 , the motor cooling assembly and the power battery cooling assembly are integrated to form an integrated liquid cooling system 18 . The integrated design can make the layout of the air-conditioning compressor 5 , the motor cooling assembly and the power battery cooling assembly more compact and reduce the space occupied by the frame 1 .

[0041] Since the electric steering oil pump 2 and the electric air compressor 3 are stacked up and down, the air-conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC are integrated into a five-in-one controller 6, and the air-conditioning compressor 5, the motor cooling assembly and the power battery cooling assembly are integrated into an integrated liquid cooling system 18, so that the space of the frame 1 is effectively released, and the air-conditioning compressor 5, the motor cooling assembly and the power battery cooling assembly also adopt an integrated design, so that the integrated liquid cooling system 18 can be arranged on the frame 1 while improving the cooling power, so that it can provide sufficient cooling capacity for higher-power motors and larger-capacity power batteries 1410, thereby increasing the load capacity of the electric truck.

[0042] In some embodiments of the present invention, at least one steering axle 7 and at least two driving axles 8 are further provided at the bottom of the frame 1 , and the steering axles 7 and the driving axles 8 may be distributed along the front-rear direction of the frame 1 .

[0043] For example, in a specific embodiment, the electric truck chassis can be an 8×4 truck chassis. The 8×4 truck chassis refers to a chassis including two steering axles 7 and two drive axles 8. Two sets of steering tires are respectively arranged on the two steering axles 7, and two sets of drive tires are respectively arranged on the two drive axles 8, for a total of eight sets of tires, including four sets of drive tires, so it is called an 8×4 truck chassis.

[0044] The 8×4 truck chassis includes two steering axles 7 and two driving axles 8. The steering axles 7 and the driving axles 8 are both arranged at the bottom of the frame 1, and the two steering axles 7 are arranged near the front end of the frame 1 along the front-rear direction, and the two driving axles 8 are arranged near the rear end of the frame 1 along the front-rear direction.

[0045] By providing at least two steering axles 7, the length of the cargo box portion of the vehicle frame 1 can be lengthened, the volume of the cargo box can be increased, and more cargo can be loaded. Meanwhile, the addition of steering axles 7 also increases the load capacity of the chassis.

[0046] In some embodiments of the present invention, a driving system is also provided on the vehicle frame 1, and the driving system may include a motor 910, a first transmission shaft 920, and a second transmission shaft 930. The motor 910 may be provided between the left longitudinal beam 101 and the right longitudinal beam 102 of the vehicle frame 1, and the motor 910 may be located above the rear steering axle 7, and the power output end of the motor 910 is arranged rearward. One end of the first transmission shaft 920 is transmission-connected to the output end of the motor 910, and the other end of the first transmission shaft 920 is transmission-connected to the front drive axle 8. One end of the second transmission shaft 930 is connected to the front drive axle 8, and the other end of the second transmission shaft 930 is transmission-connected to the rear drive axle 8. The motor 910 may output power to the drive axle 8 through the first transmission shaft 920 and the second transmission shaft 930 under the control of the five-in-one controller 6.

[0047] In one embodiment of the present invention, a bracket 10 can be set in an area near the front end of the frame 1 and between the left longitudinal beam 101 and the right longitudinal beam 102. The left side of the bracket 10 can be detachably connected to the left longitudinal beam 101, and the right side of the bracket 10 can be detachably connected to the right longitudinal beam 102.

[0048] The electric steering oil pump 2 can be arranged on the bracket 10, and the electric steering oil pump 2 can be arranged in the lower half of the bracket 10, one end of the electric steering oil pump 2 is used to connect to the hydraulic oil tank, and the other end of the electric steering oil pump 2 is used to connect to the steering axle 7, and the electric steering oil pump 2 delivers hydraulic oil to the steering axle 7 under the control of the five-in-one controller 6 to drive the steering axle 7 to steer.

[0049] The electric air compressor 3 can be arranged on the bracket 10, and the electric air compressor 3 can be arranged in the upper part of the bracket 10. The electric air compressor 3 is connected to the braking system of the steering axle 7 and the driving axle 8. The electric air compressor 3 can deliver high-pressure air to the braking system under the control of the five-in-one controller 6, thereby realizing the braking of the steering axle 7 and the driving axle 8, or releasing the braking.

[0050] The integrated liquid cooling system 18 is also arranged on the bracket 10. The electric steering oil pump 2 and the electric air compressor 3 can be arranged on the right side of the bracket 10, and the electric steering oil pump 2 and the electric air compressor 3 are stacked up and down, thus saving the lateral space of the bracket 10. At this time, the integrated liquid cooling system 18 can be set on the left side of the electric steering oil pump 2 and the electric air compressor 3.

[0051] The air conditioning compressor 5 in the integrated liquid cooling system 18 is used to provide cooling for the cab 17, the power battery cooling assembly is used to provide cooling for the power battery system, and the motor cooling assembly is used to provide cooling for the motor.

[0052] Specifically, the integrated liquid cooling system 18 includes an air conditioning compressor 5 , a first water pump 11 , a second water pump 12 and a plate heat exchanger 13 . The air conditioning compressor 5 , the first water pump 11 , the second water pump 12 and the plate heat exchanger 13 are all arranged on the bracket 10 .

[0053] The air conditioning compressor 5 is used to provide cooling capacity for the air conditioning system of the cab 17 .

[0054] The water inlet end of the first water pump 11 is connected to the radiator of the cooling system 4, and the water outlet end of the first water pump 11 is connected to the cooling pipeline of the motor 910. The first water pump 11 is used to pump the heat exchange medium in the radiator to the cooling pipeline of the motor 910 to cool the motor 910.

[0055] The water inlet of the second water pump 12 is communicated with the radiator of the cooling system 4, and the water outlet of the second water pump 12 is communicated with the first heat exchange channel of the plate heat exchanger 13, and the first heat exchange channel of the plate heat exchanger 13 is communicated with the heat exchange pipeline of the power battery 1410. The second water pump 12 is used to pass the heat exchange medium in the radiator into the first heat exchange channel of the plate heat exchanger 13, and the heat exchange medium enters the heat exchange pipeline of the power battery 1410 after passing through the first heat exchange channel of the plate heat exchanger 13, and exchanges heat with the power battery 1410.

[0056] The second heat exchange channel of the plate heat exchanger 13 can be connected to the radiator, and the refrigerant of the radiator can enter the second heat exchange channel to cool the heat exchange medium in the first heat exchange channel of the plate heat exchanger 13. The cooled heat exchange medium is used to cool the power battery 1410.

[0057] The second heat exchange channel of the plate heat exchanger 13 can also be connected to the heating system of the electric truck. After the heat medium of the heating system flows into the second heat exchange channel, it is used to heat the heat exchange medium in the first heat exchange channel. The heated heat exchange medium is used to heat the power battery 1410.

[0058] In some embodiments of the present invention, the cooling system 4 includes a radiator and a cooling fan. The radiator can be arranged on the front side of the frame 1, more specifically, on the front side of the integrated liquid cooling system 18. The cooling fan can be arranged on the front side of the radiator away from the frame 1.

[0059] In this way, the cooling fan can dissipate heat for the radiator and the integrated liquid cooling system 18 at the same time, so that the radiator and the integrated liquid cooling system 18 share a cooling fan. This arrangement can save the integrated liquid cooling system 18 a cooling fan, further freeing up the space of the frame 1, allowing the frame 1 to accommodate more components, thereby improving the space utilization of the frame 1.

[0060] The cooling fan is arranged at the frontmost position. When the vehicle is moving forward, air can pass through the cooling fan to dissipate heat for the integrated liquid cooling system 18 and the radiator.

[0061] In some embodiments of the present invention, a power battery system is also provided on the vehicle frame 1. The power battery system may include at least two groups of power batteries 1410 and a high-voltage distribution box 1420. Multiple groups of power batteries 1410 may be provided on the left side of the left longitudinal beam 101 and on the right side of the right longitudinal beam 102 of the vehicle frame 1, and located between the rear steering axle 7 and the front driving axle 8. The power battery 1410 is mainly used to power the motor 910.

[0062] The high-voltage distribution box 1420 is a high-voltage and high-current distribution unit PDU (Power Distribution Unit) for pure electric vehicles and plug-in hybrid electric vehicles. It adopts a centralized power distribution solution with a compact structure design, convenient wiring layout, and convenient and quick maintenance. The high-voltage distribution box 1420 can realize the electrical connection between the power battery 1410 and the drive system. The power battery 1410 outputs electric energy to the drive system through the high-voltage distribution box 1420, and the power battery 1410 can also be charged through the high-voltage distribution box 1420.

[0063] The high-voltage distribution box 1420 can be arranged on the left side of the left longitudinal beam 101 of the vehicle frame 1 or on the right side of the right longitudinal beam 102, and the high-voltage distribution box 1420 can be located in front of the power battery 1410 on the side. In one embodiment of the present invention, the high-voltage distribution box 1420 is arranged on the right side of the right longitudinal beam 102 of the vehicle frame 1. At the same time, the left side of the left longitudinal beam 101 of the vehicle frame 1 and the position between the front side of the power battery 1410 and the rear steering axle 7 can be a reserved space for the hydraulic oil tank, and the reserved space can be set to a hydraulic oil tank for providing hydraulic oil to the upper body.

[0064] In some embodiments of the present invention, a low-voltage battery 15 is further provided on the vehicle frame 1, and the low-voltage battery 15 can be provided on the left side of the left longitudinal beam 101 of the vehicle frame 1 or on the right side of the right longitudinal beam 102. For example, the low-voltage battery 15 can be provided on the right side of the right longitudinal beam 102 of the vehicle frame 1, and located in the area between the two steering bridges 7. The low-voltage battery 15 is connected to the power battery 1410 through the five-in-one controller 6, and the low-voltage battery 15 is used to provide power for the low-voltage electrical appliances of the vehicle, for example, it can provide power for the vehicle's instruments, central control screen, window lifters, starter motors and other electrical appliances.

[0065] In addition, a manual low-voltage normal power switch is also provided on the low-voltage battery 15, which is combined with the electromagnetic high-voltage power main switch to control the power supply of the entire vehicle, thereby reducing the failure rate of the battery.

[0066] In some embodiments of the present invention, the five-in-one controller 6 can be arranged between the left longitudinal beam 101 and the right longitudinal beam 102 of the frame 1 and located on the rear side of the bracket 10.

[0067] The air-conditioning compressor controller is used to be electrically connected to the air-conditioning compressor 5 in the integrated liquid cooling system 18 , and is used to control the air-conditioning compressor 5 to provide cooling capacity for the air-conditioning system of the cab 17 .

[0068] The electric steering oil pump controller is electrically connected to the electric steering oil pump 2 and is used to control the electric steering oil pump 2 to provide hydraulic oil to the steering device of the steering axle 7 so as to control the steering axle 7 to perform steering action.

[0069] DC / DC is a device that converts direct current of a certain voltage level into direct current of another voltage level. The DC / DC is connected between the power battery 1410 and the low-voltage storage battery 15 and is used to convert the high-voltage direct current of the power battery 1410 into low-voltage direct current to supply power to the low-voltage storage battery 15.

[0070] The motor controller is electrically connected to the motor 910 and is used to control the motor 910 to output power to the drive axle 8 .

[0071] The electric air compressor controller is used to be electrically connected to the electric air compressor 3 , and is used to control the electric air compressor 3 to provide high-pressure air to the brake system of the steering axle 7 or the driving axle 8 .

[0072] The five-in-one controller 6 is arranged at this position, so that the five-in-one controller 6 can be connected to the electric steering oil pump 2, the electric air compressor 3, and the air-conditioning compressor 5 through the high-voltage wire harness forward, and can be connected to the motor 910, the power battery 1410 and the low-voltage battery 15 through the high-voltage wire harness backward. In this way, the five-in-one controller 6 can be conveniently connected to various devices, and the length of the high-voltage wire harness can be shortened as much as possible, reducing the difficulty of wiring the high-voltage wire harness.

[0073] In one embodiment of the present invention, a protective device 16 is further provided at the lower front side of the vehicle frame 1, and the protective device 16 can be detachably connected to the vehicle frame 1 by bolts at the lower side of the vehicle frame 1. The protective device 16 is used to cover the electric air compressor 3, the electric steering oil pump 2, the five-in-one controller 6, the cooling system 4 and other high-voltage electrical components at the front side of the vehicle frame 1, and provide fire protection for the above-mentioned high-voltage electrical components.

[0074] In addition, protective coverings are provided around high-voltage electrical components such as the power battery 1410 and the high-voltage distribution box 1420 to provide protection for the power battery 1410 and the high-voltage distribution box 1420 in operational scenarios such as washing, disinfection and drying.

[0075] The electric truck provided by the present invention has the same advantages as those described above because it is provided with the electric truck chassis described above.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric truck chassis, characterized in that: The invention comprises a vehicle frame (1), an electric steering oil pump (2) arranged on the vehicle frame (1) and located in an area below a cab (17), an electric air compressor (3), a cooling system (4), an air conditioning compressor (5), a motor cooling assembly, a power battery cooling assembly, an air conditioning compressor controller, an electric air compressor controller, a motor controller, an electric steering oil pump controller and a DC / DC; wherein: The electric steering oil pump (2) and the electric air compressor (3) are arranged in a vertical stack; The air conditioning compressor (5), the motor cooling assembly and the power battery cooling assembly are integrated to form an integrated liquid cooling system (18); The air conditioning compressor controller, the electric air compressor controller, the motor controller, the electric steering oil pump controller and the DC / DC are integrated to form a five-in-one controller (6); The cooling system (4) comprises: a radiator, the radiator being arranged on a side of the integrated liquid cooling system (18) away from the rear of the vehicle; and a cooling fan, the cooling fan being arranged on a side of the radiator away from the vehicle frame (1); The integrated liquid cooling system (18) comprises a first water pump (11), a second water pump (12) and a plate heat exchanger (13); a water inlet of the first water pump (11) is connected to a radiator of the cooling system (4); a water outlet of the first water pump (11) is connected to a cooling pipeline of the motor (910); a water inlet of the second water pump (12) is connected to the radiator of the cooling system (4); a water outlet of the second water pump (12) is connected to a first heat exchange channel of the plate heat exchanger (13); the first heat exchange channel of the plate heat exchanger (13) is connected to a heat exchange pipeline of the power battery (1410); the second heat exchange channel of the plate heat exchanger (13) is connected to the radiator of the cooling system (4); the refrigerant of the radiator enters the second heat exchange channel to cool the heat exchange medium in the first heat exchange channel of the plate heat exchanger (13).

2. The electric truck chassis according to claim 1, characterized in that: A bracket (10) is arranged on the inner side of one end of the vehicle frame (1) close to the front of the vehicle; the electric steering oil pump (2), the electric air compressor (3), and the integrated liquid cooling system (18) are all arranged on the bracket (10); and the electric air compressor (3) and the integrated liquid cooling system (18) are arranged side by side along the width direction of the vehicle frame (1).

3. The electric truck chassis according to claim 2, characterized in that: The five-in-one controller (6) is arranged on a side of the bracket (10) away from the vehicle front.

4. The electric truck chassis according to claim 1, characterized in that: The vehicle also includes a power battery system, the power battery system including a power battery (1410) and a high-voltage distribution box (1420), the power batteries (1410) being distributed on both sides of the vehicle frame (1) in the width direction, the high-voltage distribution box (1420) being electrically connected to the power batteries (1410), and the high-voltage distribution box (1420) being located in front of the power battery (1410) on one side, and a reserved space for installing a hydraulic oil tank being provided in front of the power battery (1410) on the other side.

5. The electric truck chassis according to any one of claims 1 to 4, characterized in that: It also comprises at least one steering axle (7) and at least two driving axles (8) arranged at the bottom of the frame (1), wherein the steering axle (7) and the driving axle (8) are distributed along the length direction of the frame (1).

6. The electric truck chassis according to claim 5, characterized in that: The vehicle also includes a drive system, the drive system including a motor (910), a first transmission shaft (920) and a second transmission shaft (930), the motor (910) being arranged on the inner side of the vehicle frame (1), and the motor (910) being transmission-connected to the front drive axle (8) via the first transmission shaft (920), and the second transmission shaft (930) being arranged between two adjacent drive axles (8).

7. The electric truck chassis according to claim 1, characterized in that: It also includes a low-voltage battery (15), wherein the low-voltage battery (15) is arranged on the outside of the vehicle frame (1).

8. The electric truck chassis according to claim 2, characterized in that: It also comprises a protective device (16), wherein the protective device (16) is arranged at the bottom of the frame (1), and the protective device (16) is used to cover the bracket (10) and the five-in-one controller (6).

9. An electric truck, characterized in that: It comprises the electric truck chassis as described in any one of claims 1 to 8.

Images