Chassis structure of electric vehicle and electric vehicle

Abstract

The utility model provides a chassis structure of an electric vehicle and the electric vehicle, and relates to the technical field of electric vehicles. The chassis structure of the electric vehicle comprises a vehicle frame, a front axle assembly, a middle axle assembly and a rear axle assembly, the pantograph assembly is arranged on the frame and located between the front axle assembly and the middle axle assembly, and the pantograph assembly is used for obtaining electric energy of the contact network; the heat management assembly is provided with a plurality of heat transfer pipelines, the heat transfer pipelines are connected to the lower portion of the pantograph assembly, and the heat transfer pipelines are used for obtaining heat generated by the pantograph assembly; the electric power assembly comprises a power battery pack, a motor controller and a motor which are electrically connected, the power battery pack, the motor controller and the motor are connected to the peripheral side of the heat transfer pipeline, and the heat transfer pipeline is further used for obtaining heat generated by the power battery pack, the motor controller and the motor. The pipeline used by the heat management assembly of the chassis structure of the electric vehicle is short.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a chassis structure of an electric vehicle and the electric vehicle. Background Art

[0002] Electric vehicles with pantographs are usually used on electrified roads. When there is a contact network section, the vehicle can continuously transmit the contact network's electric energy to the power device through the pantograph to drive the vehicle. In sections without a contact network, the transportation operation can be completed by relying on the engine or power battery pack.

[0003] In the related art, a chassis structure of an electric vehicle includes a mounting bracket, an electric power system and a thermal management system. The electric power system and the thermal management system are arranged in sequence on the mounting bracket along the width direction of the chassis structure. This arrangement can simplify the circuit layout inside the chassis as much as possible and facilitate wiring harness connection.

[0004] However, in the related art, the electric power system and the thermal management system are arranged in sequence, and the pipelines used in the thermal management system are relatively long. Utility Model Content

[0005] The utility model provides a chassis structure of an electric vehicle and the electric vehicle, which are used to solve the problem that an electric power system and a thermal management system are arranged in sequence and the pipeline used by the thermal management system is relatively long.

[0006] In a first aspect, the utility model provides a chassis structure of an electric vehicle, comprising:

[0007] A vehicle frame and a front axle assembly, a middle axle assembly and a rear axle assembly which are sequentially arranged on the vehicle frame;

[0008] The pantograph assembly is arranged on the vehicle frame and located between the front axle assembly and the middle axle assembly. The pantograph assembly is used to obtain electrical energy from the contact network;

[0009] A thermal management assembly, wherein the thermal management assembly has a plurality of heat transfer pipes, the heat transfer pipes are connected below the pantograph assembly, and the heat transfer pipes are used to obtain heat generated by the pantograph assembly;

[0010] The electric powertrain includes an electrically connected power battery pack, a motor controller and a motor. The power battery pack, the motor controller and the motor are connected to the peripheral side of a heat transfer pipe. The heat transfer pipe is also used to obtain the heat generated by the power battery pack, the motor controller and the motor.

[0011] In a possible implementation, the chassis structure of the electric vehicle further includes a fuel powertrain, the fuel powertrain includes an engine, and the engine is disposed on the front axle assembly;

[0012] The electric powertrain also includes a generator and a generator controller. The generator is arranged on the front axle assembly, the generator controller is arranged on the vehicle frame, the engine is connected to the generator, the generator controller is connected to the generator, and the generator and the generator controller are located on the periphery of the heat transfer pipe, and the heat transfer pipe is used to obtain the heat generated by the generator and the generator controller.

[0013] In a possible implementation, the power battery pack includes at least two power battery units, and the at least two power battery units are stacked.

[0014] In a possible implementation manner, the engine is provided with a flywheel housing, and the generator is arranged on the flywheel housing.

[0015] In a possible implementation, the fuel powertrain further includes an exhaust gas treatment component, and the exhaust gas treatment component is spaced apart from the electric powertrain.

[0016] In a possible implementation, the chassis structure of the electric vehicle further includes:

[0017] The engine cooling assembly is arranged on the vehicle frame. The engine cooling assembly is located on the side of the front axle assembly away from the middle axle assembly. The engine cooling assembly is used to cool the engine.

[0018] In a possible implementation, the chassis structure of the electric vehicle further includes an air conditioning and refrigeration assembly, and the air conditioning and refrigeration assembly includes:

[0019] A compressor is arranged on the vehicle frame and is located on a side of the front axle assembly away from the middle axle assembly. The compressor is used to pressurize the refrigerant;

[0020] A condenser is arranged on the vehicle frame and is located on one side of the compressor. The condenser is used to cool the pressurized refrigerant;

[0021] The electronic fan is arranged on the vehicle frame and is located on one side of the condenser. The electronic fan is used to accelerate the cooling of the pressurized refrigerant.

[0022] In a possible implementation, the generator is electrically connected to the condenser to supply power to the condenser;

[0023] The power battery pack is electrically connected to the electronic fan to supply power to the electronic fan.

[0024] In a possible implementation, the chassis structure of the electric vehicle further includes a heat dissipation assembly, which is connected to a side of the pantograph assembly close to the motor, and is used to dissipate heat from the heat transfer pipe and the motor.

[0025] In a second aspect, the utility model provides an electric vehicle, comprising a vehicle body and a chassis structure of any electric vehicle provided in the first aspect connected to the vehicle body.

[0026] The utility model provides a chassis structure of an electric vehicle and an electric vehicle. The chassis structure of the electric vehicle forms a basic framework of the chassis structure by arranging a vehicle frame and arranging the front axle assembly, the middle axle assembly and the rear axle assembly on the vehicle frame in sequence; a pantograph assembly is arranged on the vehicle frame and is located between the front axle assembly and the middle axle assembly, and can be used to obtain electric energy from the contact network, thereby providing power for the operation of the vehicle; a thermal management assembly is arranged, and the thermal management assembly has a plurality of heat transfer pipes, which are connected to the bottom of the pantograph assembly. Used to obtain the heat generated by the pantograph assembly and dissipate the heat to reduce the temperature of the pantograph assembly, or transfer the heat to the cab for heating; by setting up an electric powertrain, the electric powertrain includes an electrically connected power battery pack, a motor controller and a motor, the power battery pack, the motor controller and the motor are connected to the peripheral side of the heat transfer pipe, and the heat transfer pipe is also used to obtain the heat generated by the power battery pack, the motor controller and the motor, and dissipate the heat to reduce the temperature of the power battery pack, the motor controller and the motor, or transfer the heat to the cab for heating.

[0027] In summary, the heat transfer pipe is connected below the pantograph assembly, and the power battery pack, the motor controller and the motor are connected to the surrounding side of the heat transfer pipe, so that the distance between the heat transfer pipe and the pantograph assembly, the power battery pack, the motor controller and the motor is relatively close, thereby making the heat transfer pipe used by the thermal management assembly shorter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0029] Figure 1 A schematic structural diagram of a chassis structure of an electric vehicle provided by an embodiment of the utility model;

[0030] Figure 2 for Figure 1 Bottom view of .

[0031] Description of reference numerals:

[0032] 100-frame; 110-front axle assembly; 120-middle axle assembly; 130-rear axle assembly;

[0033] 200- pantograph assembly; 210- pantograph bracket; 220- pantograph battery; 230- pantograph unit;

[0034] 300-thermal management assembly;

[0035] 400-electric powertrain; 410-power battery pack; 411-first power battery unit; 412-second power battery unit; 413-third power battery unit; 420-motor controller; 430-motor; 440-generator; 450-generator controller; 460-electric steering oil pump; 470-battery management system; 480-low-voltage distribution box;

[0036] 500-Fuel powertrain; 510-Engine; 520-Exhaust treatment components;

[0037] 600-Engine cooling assembly;

[0038] 700-air conditioning and refrigeration assembly; 710-compressor; 720-condenser; 730-electronic fan;

[0039] 800-heat dissipation assembly;

[0040] X-first direction; Y-second direction; Z-third direction.

[0041] To facilitate understanding of the scheme of the utility model, the spline curves and arrows used in the drawings are explained here: the parts indicated by the spline curves without arrows are solid parts, that is, parts with solid structures; the parts indicated by the spline curves with arrows are virtual parts, that is, parts without solid structures.

[0042] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the present utility model, it should be understood that the orientation or position relationship (if any) indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the phrase "comprising..." do not exclude the existence of other identical elements in the process, method, article or device comprising the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the protection scope of the utility model.

[0045] Electric vehicles with pantographs are usually used on electrified roads. When there is a contact network section, the vehicle can continuously transmit the contact network's electric energy to the power device through the pantograph to drive the vehicle. In sections without a contact network, the transportation operation can be completed by relying on the engine or power battery pack.

[0046] In the related art, a chassis structure of an electric vehicle includes a mounting bracket, an electric power system and a thermal management system. The electric power system and the thermal management system are arranged in sequence on the mounting bracket along the width direction of the chassis structure. This arrangement can simplify the circuit layout inside the chassis as much as possible and facilitate wiring harness connection.

[0047] However, in the related art, the electric power system and the thermal management system are arranged in sequence, and the pipelines used in the thermal management system are relatively long.

[0048] For the above technical issues, please see Figure 1 and Figure 2The present invention provides a chassis structure of an electric vehicle, including: a vehicle frame 100 and a front axle assembly 110, a middle axle assembly 120 and a rear axle assembly 130 sequentially arranged on the vehicle frame 100; a pantograph assembly 200, the pantograph assembly 200 is arranged on the vehicle frame 100 and is located between the front axle assembly 110 and the middle axle assembly 120, and the pantograph assembly 200 is used to obtain electric energy from the overhead line; a thermal management assembly 300, the thermal management assembly 300 has a plurality of heat transfer pipes (not shown) , a heat transfer pipe is connected below the pantograph assembly 200, and the heat transfer pipe is used to obtain the heat generated by the pantograph assembly 200; the electric powertrain 400, the electric powertrain 400 includes an electrically connected power battery pack 410, a motor controller 420 and a motor 430, the power battery pack 410, the motor controller 420 and the motor 430 are connected to the peripheral side of the heat transfer pipe, and the heat transfer pipe is also used to obtain the heat generated by the power battery pack 410, the motor controller 420 and the motor 430.

[0049] The chassis structure of the electric vehicle provided by the utility model forms a basic framework of the chassis structure by providing a vehicle frame 100 and sequentially providing a front axle assembly 110, a middle axle assembly 120 and a rear axle assembly 130 on the vehicle frame 100. The vehicle frame 100, the front axle assembly 110, the middle axle assembly 120 and the rear axle assembly 130 are all structural designs known in the art and are not described in detail herein.

[0050] By setting up the pantograph assembly 200, the pantograph assembly 200 is set on the frame 100 and is located between the front axle assembly 110 and the middle axle assembly 120. It can be used to obtain electrical energy from the contact network, thereby providing power for the operation of the vehicle.

[0051] By setting up a thermal management assembly 300, the thermal management assembly 300 has a plurality of heat transfer pipes, which are connected to the bottom of the pantograph assembly 200. The heat transfer pipes are used to obtain the heat generated by the pantograph assembly 200 and dissipate the heat to reduce the temperature of the pantograph assembly 200, or transfer the heat to the cab for heating.

[0052] By setting up an electric powertrain 400, the electric powertrain 400 includes an electrically connected power battery pack 410, a motor controller 420 and a motor 430. The power battery pack 410, the motor controller 420 and the motor 430 are connected to the peripheral side of the heat transfer pipe. The heat transfer pipe is also used to obtain the heat generated by the power battery pack 410, the motor controller 420 and the motor 430, and dissipate the heat to reduce the temperature of the power battery pack 410, the motor controller 420 and the motor 430, or transfer the heat to the cab for heating.

[0053] In summary, the heat transfer pipe is connected below the pantograph assembly 200, and the power battery pack 410, the motor controller 420 and the motor 430 are connected to the surrounding side of the heat transfer pipe, so that the distance between the heat transfer pipe and the pantograph assembly 200, the power battery pack 410, the motor controller 420 and the motor 430 is relatively close, so that the heat transfer pipe used by the thermal management assembly 300 is shorter, thereby reducing the layout cost of the heat transfer pipe and improving the space utilization of the chassis structure.

[0054] In some specific embodiments, the heat transfer pipe is an aluminum pipe with coolant in it. The end of the heat transfer pipe is connected to the heat-generating component of the electric powertrain 400, or the end of the heat transfer pipe is close to the heat-generating component of the electric powertrain 400, so that the coolant can obtain the heat generated by the heat-generating component.

[0055] In some embodiments, see Figure 1 The pantograph assembly 200 includes a pantograph bracket 210, a pantograph battery 220 and a pantograph unit 230. The pantograph bracket 210 is arranged on the vehicle frame 100, the pantograph battery 220 is located in the pantograph bracket 210, and the pantograph unit 230 is arranged on the pantograph bracket 210. The pantograph unit 230 is electrically connected to the pantograph battery 220 to store the acquired electric energy in the pantograph battery 220.

[0056] In this embodiment, the pantograph bracket 210 has a certain rigidity, the pantograph battery 220 is located in the pantograph bracket 210, and the pantograph bracket 210 can prevent other parts of the vehicle from contacting the pantograph battery 220 so that the pantograph battery 220 is damaged; and the pantograph unit 230 is arranged on the pantograph bracket 210, and the pantograph bracket 210 has a supporting effect on the pantograph unit 230, so that the pantograph unit 230 can stably contact the contact network.

[0057] In addition, the pantograph bracket 210 and the pantograph battery 220 are used to be arranged behind the cab of the electric vehicle, and the pantograph unit 230 is used to extend above the cab, so that the entire pantograph assembly 200 is located at the front end of the frame 100, which will not affect the detachment and removal of the trailer of the electric vehicle.

[0058] In other embodiments, see Figure 1 The chassis structure of the electric vehicle also includes a fuel powertrain 500 , and the fuel powertrain 500 includes an engine 510 , and the engine 510 is arranged on the front axle assembly 110 .

[0059] The electric powertrain 400 also includes a generator 440 and a generator controller 450. The generator 440 is arranged on the front axle assembly 110, and the generator controller 450 is arranged on the frame 100. The engine 510 is connected to the generator 440, and the generator controller 450 is connected to the generator 440. The generator 440 and the generator controller 450 are located on the peripheral side of the heat transfer pipe, and the heat transfer pipe is used to obtain the heat generated by the generator 440 and the generator controller 450.

[0060] In this embodiment, by arranging the generator 440 and the generator controller 450 on the peripheral side of the heat transfer pipe, the heat transfer pipe can also be used to obtain the heat generated by the generator 440 and the generator controller 450, and dissipate the heat to reduce the temperature of the generator 440 and the generator controller 450, or transfer the heat to the cab for heating.

[0061] In summary, the heat transfer pipe is connected below the pantograph assembly 200, and the power battery pack 410, the motor controller 420, the motor 430, the generator 440 and the generator controller 450 are connected to the periphery of the heat transfer pipe, so that the distance between the heat transfer pipe and the pantograph assembly 200, the power battery pack 410, the motor controller 420, the motor 430, the generator 440 and the generator controller 450 is relatively close, thereby making the heat transfer pipe used by the thermal management assembly 300 shorter, thereby reducing the layout cost of the heat transfer pipe and improving the space utilization of the chassis structure.

[0062] It should be noted that, in the present embodiment, the electric vehicle is a hybrid vehicle with a pantograph, which has both a fuel powertrain 500, an electric powertrain 400, and a pantograph assembly 200, so that the electric vehicle has at least four driving modes, namely, a pantograph driving mode, a range extender driving mode, a pure electric driving mode, and a hybrid driving mode.

[0063] In the pantograph driving mode, when the electric vehicle travels on a road section with a contact network, the electric vehicle relies on the pantograph assembly 200 to transfer the electric energy of the contact network to the motor 430 of the electric powertrain 400 to drive the electric vehicle to operate, and at the same time can charge the power battery pack 410.

[0064] In the range extender driving mode, the electric vehicle travels on a non-contact network section, and the engine 510 and the generator 440 of the electric vehicle form a range extender. The engine 510 drives the generator 440 to generate electricity and transmits the generated electrical energy to the motor 430 of the electric powertrain 400 to drive the electric vehicle to operate. At the same time, the excess electrical energy generated can be stored in the power battery pack 410.

[0065] In the pure electric driving mode, the electric vehicle travels on a non-contact network section, and the power battery pack 410 of the electric vehicle transmits electric energy to the motor 430 to drive the electric vehicle to operate.

[0066] In the hybrid driving mode, the electric vehicle travels on a non-contact network section, and the range extender formed by the engine 510 and the generator 440 of the electric vehicle and the power battery pack 410 jointly transmit electrical energy to the motor 430 to drive the electric vehicle to operate.

[0067] In some specific implementations, the engine 510 has a flywheel housing (not shown), and the generator 440 is disposed on the flywheel housing.

[0068] In this embodiment, the engine 510 and the generator 440 are arranged together, and the kinetic energy loss of the engine 510 is relatively small.

[0069] In some other embodiments, see Figure 1 The electric powertrain 400 further includes an electric steering oil pump 460, a battery management system 470 (BMS) and a low-voltage distribution box 480. The electric steering oil pump 460, the low-voltage distribution box 480, the generator controller 450 and the power battery pack 410 are arranged in sequence along a first direction X, which is the length direction of the frame 100. In addition, the battery management system 470 and the low-voltage distribution box 480 are arranged side by side in a second direction Y, which is the width direction of the frame 100.

[0070] In this embodiment, the components of the electric powertrain 400 are arranged in the above-mentioned manner, which has a high degree of modularization and improves the space utilization of the chassis structure.

[0071] The electric steering oil pump 460 , the battery management system 470 and the low-voltage distribution box 480 are structural designs known in the art and are not described in detail herein.

[0072] For some specific implementations, see Figure 1 The power battery pack 410 includes at least two power battery units, and the at least two power battery units are stacked.

[0073] Specifically, at least two power battery units are stacked along a third direction Z, which is the height direction of the frame 100, and the power battery units are connected in series. Specifically, at least one power battery unit and other components of the electric powertrain 400 are located on the upper layer of the frame 100, and other power battery units are located below at least one power battery unit and other components of the electric powertrain 400, that is, located on the lower layer of the frame 100.

[0074] For example, see Figure 1 The power battery pack 410 includes a first power battery unit 411, a second power battery unit 412 and a third power battery unit 413. The electric steering oil pump 460, the battery management system 470, the generator controller 450 and the first power battery unit 411 are arranged in sequence along the first direction X, and the second power battery unit 412 and the third power battery unit 413 are located below the electric steering oil pump 460, the battery management system 470, the generator controller 450 and the first power battery unit 411.

[0075] The power battery pack 410 adopts the above-mentioned arrangement, which can not only achieve a series voltage to stably supply power to the motor 430 , but also improve the space utilization of the chassis structure and the capacity of the power battery pack 410 .

[0076] In this utility model, please see Figure 1 The fuel powertrain 500 further includes an exhaust gas treatment component 520 , and the exhaust gas treatment component 520 is spaced apart from the electric powertrain 400 .

[0077] The exhaust gas treatment component 520 will generate a lot of heat when exhausting. In order to ensure the normal operation of the various components of the electric powertrain 400 (such as the power battery pack 410), the various components of the electric powertrain 400 need to be isolated from the heat source. Therefore, by spacing the exhaust gas treatment component 520 and the electric powertrain 400, the heat of the exhaust gas treatment component 520 will not affect the normal operation of the electric powertrain 400.

[0078] The exhaust gas treatment component 520 is a structural design known in the art and will not be described in detail here.

[0079] In some embodiments, see Figure 1 The chassis structure of the electric vehicle also includes an engine cooling assembly 600 , which is disposed on the vehicle frame 100 . The engine cooling assembly 600 is located on a side of the front axle assembly 110 that is away from the middle axle assembly 120 . The engine cooling assembly 600 is used to cool the engine 510 .

[0080] Specifically, the engine cooling assembly 600 includes a water-cooled high-temperature radiator, an intercooler and a mechanical fan. The mechanical fan is set toward the engine 510. The mechanical fan can rotate to dissipate heat from the engine 510. The water-cooled high-temperature radiator and the intercooler are structural designs known in the art and will not be described in detail here.

[0081] It should be noted that other structures of the electric powertrain 400 and the fuel powertrain 500 are structural designs known in the art and will not be elaborated herein.

[0082] In other embodiments, see Figure 1 The chassis structure of the electric vehicle also includes an air conditioning and refrigeration assembly 700, which includes: a compressor 710, which is arranged on the frame 100, and the compressor 710 is located on the side of the front axle assembly 110 away from the middle axle assembly 120, and the compressor 710 is used to pressurize the refrigerant; a condenser 720, which is arranged on the frame 100, and the condenser 720 is located on one side of the compressor 710, and the condenser 720 is used to cool the pressurized refrigerant; an electronic fan 730, which is arranged on the frame 100, and the electronic fan 730 is located on one side of the condenser 720, and the electronic fan 730 is used to accelerate the cooling of the pressurized refrigerant.

[0083] In this embodiment, the condenser 720 is located on one side of the compressor 710, that is, the condenser 720 is adjacent to the compressor 710, and the distance between the condenser 720 and the compressor 710 is small. Since the condenser 720 is connected to the compressor 710 through a pipeline, the distance between the condenser 720 and the compressor 710 is small, which shortens the length of the pipeline between the condenser 720 and the compressor 710, thereby improving the cooling efficiency.

[0084] It should be noted that other structures of the air-conditioning refrigeration assembly 700 are structural designs known in the art and will not be elaborated here.

[0085] For some specific implementations, see Figure 1 The generator 440 is electrically connected to the condenser 720 to supply power to the condenser 720 ; the power battery pack 410 is electrically connected to the electronic fan 730 to supply power to the electronic fan 730 .

[0086] In this embodiment, the condenser 720 is powered by the generator 440, and the electronic fan 730 is powered by the power battery pack 410, so that the air conditioning refrigeration system can perform refrigeration regardless of the mode. For example, when the fuel powertrain 500 is running, if the electronic fan 730 is not running, the condenser 720 will normally cool the refrigerant, and if the electronic fan 730 is running, the electronic fan 730 can accelerate the cooling of the pressurized refrigerant to improve the refrigeration efficiency; when the fuel powertrain 500 is not running, the electronic fan 730 can be powered by the power battery pack 410 and can normally cool the refrigerant.

[0087] In some other embodiments, see Figure 1 The chassis structure of the electric vehicle also includes a heat dissipation assembly 800, which is connected to the pantograph assembly 200 and is used to dissipate heat from the heat transfer pipe.

[0088] Specifically, the heat dissipation assembly 800 includes a plurality of electric fans, which are arranged facing the heat transfer pipe. The heat transfer pipe is an aluminum pipe. After the coolant in the heat transfer pipe obtains the heat of the heat-generating components of the electric power assembly 400, the heat will be transferred to the heat transfer pipe. The rotation of the electric fan can blow the heat on the heat transfer pipe into the air to achieve heat dissipation of the heat transfer pipe, thereby achieving heat dissipation of the heat transfer components of the electric power assembly 400.

[0089] In some other embodiments, the heat dissipation assembly 800 is connected to a side of the pantograph assembly 200 close to the motor 430 , and the heat dissipation assembly 800 is used to dissipate heat from the heat transfer pipe and the motor 430 .

[0090] In this embodiment, the heat dissipation assembly 800 is connected to a side of the pantograph assembly 200 close to the motor 430 , and at least one electric fan of the heat dissipation assembly 800 is disposed toward the motor 430 to dissipate heat from the motor 430 .

[0091] In the present invention, a protective cover (not shown) is provided outside the pantograph battery 220 and the power battery pack 410, which can not only prevent other parts of the vehicle from contacting the pantograph battery 220 and the power battery pack 410 so as to damage the pantograph battery 220 and the power battery pack 410, but also prevent rainwater from contacting the pantograph battery 220 and the power battery pack 410 so as to damage the pantograph battery 220 and the power battery pack 410. Therefore, the protective cover can play a good protective role on the pantograph battery 220 and the power battery pack 410.

[0092] An embodiment of the utility model further provides an electric vehicle, comprising a vehicle body and a chassis structure of any of the above-mentioned electric vehicles connected to the vehicle body.

[0093] Specifically, the electric vehicle of this embodiment adopts all the technical solutions of the chassis structure of any of the above-mentioned electric vehicles, and therefore has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0094] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0095] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A chassis structure of an electric vehicle, characterized in that: include: A vehicle frame and a front axle assembly, a middle axle assembly and a rear axle assembly sequentially arranged on the vehicle frame; A pantograph assembly, the pantograph assembly being arranged on the vehicle frame and located between the front axle assembly and the middle axle assembly, the pantograph assembly being used to obtain electric energy from the contact network; A thermal management assembly, wherein the thermal management assembly has a plurality of heat transfer pipes, wherein the heat transfer pipes are connected below the pantograph assembly and are used to obtain heat generated by the pantograph assembly; An electric powertrain, the electric powertrain comprising an electrically connected power battery pack, a motor controller and a motor, the power battery pack, the motor controller and the motor being connected to the circumference of the heat transfer pipe, the heat transfer pipe being also used to obtain the heat generated by the power battery pack, the motor controller and the motor.

2. The chassis structure of an electric vehicle according to claim 1, characterized in that: Also included is a fuel powertrain, the fuel powertrain including an engine, the engine being disposed on the front axle assembly; The electric powertrain also includes a generator and a generator controller, the generator is arranged on the front axle assembly, the generator controller is arranged on the vehicle frame, the engine is connected to the generator, the generator controller is connected to the generator, and the generator and the generator controller are located on the peripheral side of the heat transfer pipe, and the heat transfer pipe is used to obtain the heat generated by the generator and the generator controller.

3. The chassis structure of an electric vehicle according to claim 2, characterized in that: The power battery pack includes at least two power battery units, and the at least two power battery units are stacked.

4. The chassis structure of an electric vehicle according to claim 2, characterized in that: The engine is provided with a flywheel housing, and the generator is arranged on the flywheel housing.

5. The chassis structure of an electric vehicle according to claim 2, characterized in that: The fuel powertrain further includes an exhaust gas treatment component, and the exhaust gas treatment component is spaced apart from the electric powertrain.

6. The chassis structure of an electric vehicle according to claim 2, characterized in that: Also includes: An engine cooling assembly is arranged on the vehicle frame, the engine cooling assembly is located on a side of the front axle assembly away from the middle axle assembly, and the engine cooling assembly is used to cool the engine.

7. The chassis structure of an electric vehicle according to claim 2, characterized in that: It also includes an air conditioning and refrigeration assembly, which includes: A compressor, the compressor is arranged on the vehicle frame, the compressor is located on a side of the front axle assembly away from the middle axle assembly, and the compressor is used to pressurize the refrigerant; A condenser, the condenser is arranged on the frame, the condenser is located on one side of the compressor, and the condenser is used to cool the pressurized refrigerant; An electronic fan is arranged on the vehicle frame, the electronic fan is located at one side of the condenser, and the electronic fan is used to accelerate the cooling of the pressurized refrigerant.

8. The chassis structure of an electric vehicle according to claim 7, characterized in that: The generator is electrically connected to the condenser to supply power to the condenser; The power battery pack is electrically connected to the electronic fan to supply power to the electronic fan.

9. The chassis structure of an electric vehicle according to any one of claims 1 to 8, characterized in that: It also includes a heat dissipation assembly, which is connected to a side of the pantograph assembly close to the motor, and is used to dissipate heat from the heat transfer pipe and the motor.

10. An electric vehicle, characterized in that: A chassis structure of an electric vehicle according to any one of claims 1 to 9 comprising a vehicle body and the vehicle body connected to the vehicle body.

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