Chassis and vehicle

Abstract

The chassis comprises a vehicle frame, a range extender, a battery pack, a driving motor, a tail gas heat exchanger, an expansion machine and a working medium tank, the range extender, the battery pack and the driving motor are all arranged on the vehicle frame and connected with the vehicle frame, and the range extender comprises an engine; the tail gas heat exchanger and the expansion machine are both arranged on the frame and connected with the frame, the tail gas heat exchanger is connected with the engine, the expansion machine is connected with the tail gas heat exchanger, the working medium tank is connected with the expansion machine, and the tail gas heat exchanger is connected with the working medium tank. According to the chassis, exhaust gas of the engine is cooled into low-temperature gas, namely, the exhaust gas temperature of the engine is reduced, and therefore an exhaust device of the engine can be arranged at the position close to a battery pack and a driving motor, and the integration level of the chassis is improved.

Description

Technical Field

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

[0002] Range-extended electric vehicles have good development prospects due to their low carbon and environmental protection, longer driving range than pure electric vehicles, and lower cost than fuel vehicles. In order to achieve the decoupling of the chassis and the body, the range extender, battery pack and drive motor are integrated on the chassis of the range-extended electric vehicle. However, the engine exhaust temperature of the range extender is relatively high. In order to prevent the engine exhaust from affecting the normal operation of the battery pack and the drive motor, the engine exhaust device can only be arranged at a position far away from the battery pack and the drive motor, and the chassis integration is low. Utility Model Content

[0003] Therefore, the utility model provides a chassis to improve the integration of the chassis.

[0004] The chassis of the utility model includes a frame, a range extender, a battery pack, a drive motor, an exhaust gas heat exchanger, an expander and a working fluid tank. The range extender, the battery pack and the drive motor are all arranged on the frame and connected to the frame. The range extender includes an engine; the exhaust gas heat exchanger and the expander are both arranged on the frame and connected to the frame, the exhaust gas heat exchanger is connected to the engine, the expander is connected to the exhaust gas heat exchanger, the working fluid tank is connected to the expander, and the exhaust gas heat exchanger is connected to the working fluid tank.

[0005] Optionally, the range extender includes an exhaust pipe extending along the length direction of the chassis, the exhaust pipe is connected to the exhaust gas heat exchanger, and the exhaust pipe is arranged on one side of the battery pack in the width direction of the chassis.

[0006] Optionally, the vehicle frame is provided with a mounting hole, and the exhaust pipe is embedded in the mounting hole.

[0007] Optionally, the frame is an extruded aluminum frame, and the mounting hole is surrounded by a portion of the frame.

[0008] Optionally, the chassis also has a working fluid pump, the working fluid pump is connected to the working fluid tank, and the exhaust gas heat exchanger is connected to the working fluid pump; the working fluid pump is arranged on the vehicle frame and connected to the vehicle frame.

[0009] Optionally, there are multiple drive motors, some of which are arranged between the range extender and the battery pack in the length direction of the chassis, and other drive motors are arranged on a side of the battery pack away from the range extender in the length direction of the chassis.

[0010] Optionally, the engine is a horizontally opposed engine; and / or, the range extender also includes a generator, the generator is connected to the engine, and the generator is an axial magnetic field motor; and / or, the engine includes an engine rotor and a crankshaft, and the engine rotor is directly connected to the crankshaft.

[0011] Optionally, the chassis further includes a sound-absorbing cover plate, which is disposed on the top of the frame and connected to the frame, and the sound-absorbing cover plate covers at least one of the engine and the drive motor; and / or, the chassis further includes a protective cover plate, which is disposed on the bottom of the frame and connected to the frame, and the protective cover plate covers at least a portion of the frame.

[0012] The utility model also provides a vehicle.

[0013] The vehicle of the utility model comprises the chassis described in any one of the above items.

[0014] Optionally, the vehicle includes a condenser and an air conditioner, the condenser is connected to the expander, the working fluid tank is connected to the condenser, the battery pack is provided with a heat exchange system, and the condenser forms a part of the heat exchange system and / or the air conditioner.

[0015] The chassis of the utility model connects the exhaust gas heat exchanger with the engine of the range extender so that the exhaust gas of the engine can enter the exhaust gas heat exchanger, and the exhaust gas of the engine exchanges heat with the working medium in the exhaust gas heat exchanger, so that the working medium is heated to steam by the exhaust gas of the engine, and the exhaust gas of the engine is cooled to a gas with a lower temperature, that is, the exhaust temperature of the engine is reduced, thereby, the exhaust device of the engine can be arranged at a position close to the battery pack and the drive motor, thereby improving the integration of the chassis. In addition, by connecting the expander with the exhaust gas heat exchanger, the gaseous working medium drives the expander to do work, thereby realizing the effective utilization of the exhaust gas of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of a chassis of an embodiment of the utility model.

[0017] Figure 2 It is a front view of a chassis of an embodiment of the utility model.

[0018] Figure 3 It is a layout diagram of a chassis of an embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of an organic Rankine cycle system according to an embodiment of the utility model.

[0020] Figure 5It is a connection relationship diagram of an organic Rankine cycle system of an embodiment of the utility model.

[0021] Figure 6 It is a partial structural schematic diagram of a chassis of an embodiment of the utility model.

[0022] Figure 7 It is a partial cross-sectional view of a chassis of an embodiment of the utility model.

[0023] Figure 8 It is a structural schematic diagram of a chassis of an embodiment of the utility model.

[0024] Fig. 9 It is a structural schematic diagram of a vehicle according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 10. Chassis;

[0027] 1. Frame; 11. Mounting hole; 12. Fixing block;

[0028] 2. Range extender; 21. Engine; 22. Exhaust pipe; 23. Three-way catalytic converter;

[0029] 3. Battery pack;

[0030] 4. driving motor; 41. first driving motor; 42. second driving motor;

[0031] 5. Organic Rankine cycle system; 51. Tail gas heat exchanger; 52. Expander; 53. Condenser; 54. Working fluid tank; 55. Working fluid pump; 56. Gas-liquid separator;

[0032] 6. Battery;

[0033] 7. Cooling fan;

[0034] 8. Fuel tank;

[0035] 91. Sound-absorbing cover plate; 92. Protective cover plate;

[0036] 101. Thermal control device;

[0037] 20. Wheels;

[0038] 30. Car body. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0040] like Figures 1 to 5As shown, the chassis 10 of the embodiment of the utility model includes a frame 1, a range extender 2, a battery pack 3, a drive motor 4, an exhaust gas heat exchanger 51, an expander 52 and a working fluid tank 54. The range extender 2, the battery pack 3 and the drive motor 4 are all arranged on the frame 1 and connected to the frame 1. The range extender 2 includes an engine 21. The exhaust gas heat exchanger 51 and the expander 52 are both arranged on the frame 1 and connected to the frame 1. The exhaust gas heat exchanger 51 is connected to the engine 21, the expander 52 is connected to the exhaust gas heat exchanger 51, the working fluid tank 54 is connected to the expander 52, and the exhaust gas heat exchanger 51 is connected to the working fluid tank 54.

[0041] The chassis 10 of the utility model embodiment connects the exhaust gas heat exchanger 51 with the engine 21 of the range extender 2, so that the exhaust gas of the engine 21 can enter the exhaust gas heat exchanger 51, and the exhaust gas of the engine 21 exchanges heat with the working medium in the exhaust gas heat exchanger 51, so that the working medium is heated to steam by the exhaust gas of the engine 21, and the exhaust gas of the engine 21 is cooled to a gas with a lower temperature, that is, the exhaust temperature of the engine 21 is reduced, thereby, the exhaust device of the engine 21 can be arranged at a position close to the battery pack 3 and the drive motor 4, thereby improving the integration of the chassis 10. In addition, by connecting the expander 52 with the exhaust gas heat exchanger 51, the gaseous working medium drives the expander 52 to do work, thereby realizing the effective utilization of the exhaust gas of the engine 21; the working medium after driving the expander 52 to do work is cooled to a liquid state and enters the working medium tank 54, and then enters the exhaust gas heat exchanger 51 for recycling.

[0042] In some embodiments, Figures 1 to 3 As shown, there are multiple drive motors 4, some of which are arranged between the range extender 2 and the battery pack 3 in the length direction of the chassis 10, and other drive motors 4 are arranged on the side of the battery pack 3 away from the range extender 2 in the length direction of the chassis 10.

[0043] For example, Figure 2 and Figure 3 As shown, there are two drive motors 4, which are respectively a first drive motor 41 and a second drive motor 42. The first drive motor 41 is arranged between the range extender 2 and the battery pack 3 in the length direction of the chassis 10, and the battery pack 3 is arranged between the first drive motor 41 and the second drive motor 42 in the length direction of the chassis 10.

[0044] By performing the above-mentioned layout of the range extender 2 , the battery pack 3 and the drive motor 4 , the compactness of the layout of the range extender 2 , the battery pack 3 and the drive motor 4 can be improved, and the integration of the chassis 10 can be further improved.

[0045] In order to make the technical solution of the present invention easier to understand, the following takes the example that the length direction of the chassis 10 is consistent with the front-to-back direction to further describe the technical solution of the present invention. Figures 1 to 3 shown.

[0046] For example, Figure 2 and Figure 3 As shown, the range extender 2 is arranged in front of the first drive motor 41, the first drive motor 41 is arranged in front of the battery pack 3, and the battery pack 3 is arranged in front of the second drive motor 42. The first drive motor 41 is used to drive the front wheels of the vehicle, and the second drive motor 42 is used to drive the rear wheels of the vehicle.

[0047] like Figure 2 and Figure 3 As shown, the chassis 10 also includes a fuel tank 8 , which is disposed between the battery pack 3 and the second drive motor 42 in the length direction of the chassis 10 , and the fuel tank 8 is connected to the frame 1 .

[0048] By disposing the oil tank 8 between the battery pack 3 and the second drive motor 42 , the integration of the chassis 10 can be further improved.

[0049] Optionally, the engine 21 is a horizontally opposed engine.

[0050] By setting the engine 21 as a horizontally opposed engine, not only the overall volume of the engine 21 is reduced, further improving the integration of the chassis 10; but also the height of the engine 21 is reduced, thereby reducing the overall height of the range extender 2, making it easier to integrate the range extender 2 on the chassis 10.

[0051] Optionally, the range extender 2 further includes a generator, which is connected to the engine 21 and is an axial magnetic field motor.

[0052] For example, the engine 21 includes an engine rotor, the generator includes a generator rotor, and the engine rotor and the generator rotor are connected via a crankshaft. When the engine rotor rotates, the crankshaft drives the generator rotor to rotate, thereby enabling the generator to generate electricity.

[0053] The generator adopts an axial magnetic field motor, which can make the height of the generator lower, thereby reducing the overall height of the range extender 2 and facilitating the integration of the range extender 2 on the chassis 10.

[0054] Optionally, the engine rotor is directly connected to the crankshaft. In other words, the engine rotor and the crankshaft are no longer indirectly connected through other components.

[0055] By directly connecting the engine rotor to the crankshaft, accessories such as the engine torsional vibration damper can be removed, thereby improving the power generation efficiency of the range extender 2 and reducing costs. In addition, the structure of the range extender 2 can also be simplified.

[0056] In some embodiments, Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the range extender 2 includes an exhaust pipe 22 extending along the length direction of the chassis 10 , the exhaust pipe 22 is connected to the exhaust gas heat exchanger 51 , and the exhaust pipe 22 is arranged on one side of the battery pack 3 in the width direction of the chassis 10 .

[0057] For example, the exhaust pipe 22 extends in the front-to-rear direction, and the exhaust pipe 22 is connected to the exhaust gas heat exchanger 51 , so that the exhaust gas of the engine 21 is discharged through the exhaust pipe 22 after being cooled by the exhaust gas heat exchanger 51 .

[0058] By arranging the exhaust pipe 22 on one side of the battery pack 3 in the width direction of the chassis 10 , the layout compactness of the exhaust pipe 22 and the battery pack 3 can be improved, and the integration of the chassis 10 can be further improved.

[0059] In order to make the technical solution of the present invention easier to understand, the following takes the width direction of the chassis 10 as an example to further describe the technical solution of the present invention. Figure 1 and Figure 3 shown.

[0060] For example, Figure 3 As shown, the exhaust pipe 22 is arranged on the left side of the battery pack 3.

[0061] Optionally, the vehicle frame 1 is provided with a mounting hole 11 , and the exhaust pipe 22 is embedded in the mounting hole 11 .

[0062] By embedding the exhaust pipe 22 in the mounting hole 11 of the frame 1, on the one hand, the exhaust pipe 22 can be prevented from occupying additional external space of the frame 1, thereby further improving the integration of the chassis 10; on the other hand, compared with the method of hanging the exhaust pipe 22, the exhaust pipe 22 can be prevented from shaking and expanding with other parts of the chassis 10, which is beneficial to improving the reliability of the chassis 10.

[0063] Alternatively, if Figure 6 and Figure 7 As shown, the frame 1 is an extruded aluminum frame, and the mounting hole 11 is surrounded by a portion of the frame 1 .

[0064] The frame 1 is an extruded aluminum frame, which can reduce the weight of the frame 1 , thereby reducing the weight of the chassis 10 , which is beneficial to the lightweight design of the chassis 10 .

[0065] Alternatively, if Figure 7 As shown, a fixing block 12 is provided in the mounting hole 11, and the exhaust pipe 22 is connected to the hole wall of the mounting hole 11 through the fixing block 12. The fixing block 12 may be an elastic block.

[0066] By setting a fixing block 12 in the mounting hole 11, the fixing block 12 is used to realize the installation and fixation of the exhaust pipe 22. On the one hand, when the aperture of the mounting hole 11 is larger than the outer diameter of the exhaust pipe 22, the installation and fixation of the exhaust pipe 22 can also be realized, thereby avoiding the problem that the exhaust pipe 22 cannot be installed due to the inconsistency between the aperture of the mounting hole 11 and the outer diameter of the exhaust pipe 22; on the other hand, when the fixing block 12 is an elastic block, the fixing block 12 can be used to absorb the vibration of the exhaust pipe 22 during the exhaust process, thereby improving the stability of the chassis 10.

[0067] In some embodiments, the chassis 10 further includes a working fluid pump 55, the working fluid pump 55 is connected to the working fluid tank 54, and the exhaust gas heat exchanger 51 is connected to the working fluid pump 55. The working fluid pump 55 is disposed on the vehicle frame 1 and connected to the vehicle frame 1.

[0068] like Figure 4 and Figure 5 As shown, the range extender 2 also includes a three-way catalytic converter 23, which is connected to both the engine 21 and the exhaust gas heat exchanger 51, so that the exhaust gas of the engine 21 first enters the three-way catalytic converter 23 for catalytic reaction, and then enters the exhaust gas heat exchanger 51. The condenser 53 is connected to the expander 52, the gas-liquid separator 56 is connected to the condenser 53, and the working medium tank 54 is connected to the gas-liquid separator 56. The exhaust gas of the engine 21 is a high-temperature and high-pressure exhaust gas. After the high-temperature and high-pressure exhaust gas and the low-temperature and low-pressure liquid working medium enter the exhaust gas heat exchanger 51, heat exchange is performed in the exhaust gas heat exchanger 51, and the low-temperature and low-pressure liquid working medium is heated to high-temperature and high-pressure superheated steam, and the high-temperature and high-pressure exhaust gas is cooled to a relatively low-temperature and low-pressure exhaust gas; then, the relatively low-temperature and low-pressure exhaust gas is discharged through the exhaust pipe 22; the high-temperature and high-pressure superheated steam enters the expander 52 to drive the expander 52 to generate power, and becomes relatively low-temperature and low-pressure steam; then, the relatively low-temperature and low-pressure steam enters the condenser 53 and is cooled to a low-temperature and low-pressure gas-liquid mixture working medium; thereafter, the low-temperature and low-pressure gas-liquid mixture working medium enters the gas-liquid separator 56, the separated gaseous working medium is discharged, and the separated low-temperature and low-pressure liquid working medium enters the working medium tank 54, and driven by the working medium pump 55, the low-temperature and low-pressure liquid working medium enters the exhaust gas heat exchanger 51 again to be recycled.

[0069] The electricity generated by the expander 52 can be stored and utilized by the battery 6, and the cooling medium in the condenser 53 can use the cooling water of the electric drive assembly. The condenser 53 is connected to the cooling fan 7, and the cooling fan is used to cool the cooling medium in the condenser 53. The tail gas heat exchanger 51, the expander 52, the condenser 53, the working fluid tank 54 and the working fluid pump 55 constitute the organic Rankine cycle system 5.

[0070] By arranging the working fluid pump 55 on the vehicle frame 1 , the integration level of the chassis 10 can be further improved.

[0071] like Figure 5 As shown, the organic Rankine cycle system 5 and the engine 21 are both connected to the thermal control device 101, wherein the coolant discharged from the engine 21 (the coolant after cooling and dissipating the heat of the engine 21) and the low-temperature and low-pressure gas-liquid mixture working fluid discharged from the condenser 53 enter the thermal control device 101 and serve as the heat source of the thermal control device 101 to heat other components or spaces. The thermal control device 101 can be a heat exchange system of the battery pack 3 or an air conditioner of the vehicle to heat the battery pack 3 or the passenger compartment of the vehicle.

[0072] In some embodiments, Figure 2 and Figure 8 As shown, the chassis 10 further includes a sound absorbing cover plate 91, which is disposed on the top of the vehicle frame 1 and connected to the vehicle frame 1, and covers at least one of the engine 21 and the drive motor 4. The sound absorbing cover plate 91 and the vehicle frame 1 can be welded or connected by bolts.

[0073] The sound absorbing cover plate 91 covers at least one of the engine 21 and the drive motor 4, which can be understood as: the sound absorbing cover plate 91 covers the engine 21 and the drive motor 4; or, the sound absorbing cover plate 91 covers one of the engine 21 and the drive motor 4, and the other of the engine 21 and the drive motor 4 is not covered by the sound absorbing cover plate 91.

[0074] By covering at least one of the engine 21 and the drive motor 4 with the sound-absorbing cover 91, the sound-absorbing cover 91 can be used to absorb noise from at least one of the engine 21 and the drive motor 4, thereby reducing the outward radiation noise of the engine 21 and the drive motor 4, thereby reducing the noise of the chassis 10.

[0075] In order to make the technical solution of the present invention easier to understand, the following takes the height direction of the chassis 10 as an example to further describe the technical solution of the present invention. Figure 2 and Figure 8 shown.

[0076] For example, the sound absorbing cover plate 91 is provided on the upper side of the vehicle frame 1 , and the sound absorbing cover plate 91 covers the engine 21 and the driving motor 4 .

[0077] Optionally, the sound absorbing cover plate 91 includes sound absorbing cotton and galvanized steel plates which are stacked; or, the sound absorbing cover plate 91 includes damping coating materials and aluminum plates which are stacked.

[0078] In some embodiments, the chassis 10 further includes a protective cover plate 92, which is disposed at the bottom of the frame 1 and connected to the frame 1, and covers at least a portion of the frame 1. The protective cover plate 92 and the frame 1 may be welded or connected by bolts.

[0079] For example, the protective cover 92 is provided on the lower side of the vehicle frame 1 , and the protective cover 92 covers the entire vehicle frame 1 .

[0080] By arranging the protective cover plate 92 at the bottom of the vehicle frame 1 , the vehicle frame 1 can be isolated from the road surface, thereby isolating the vehicle frame 1 and the components installed on the vehicle frame 1 from damage caused by complex road conditions.

[0081] The chassis 10 of the utility model embodiment has the following advantages:

[0082] The range extender 2 is decoupled from the drive motor 4, and the range extender 2 and the drive motor 4 are completely connected by wires, so that the engine 21 can be arranged in the chassis 10 to realize the function of the skateboard chassis;

[0083] The range extender 2 is better integrated with the drive motor 4 and the battery pack 3, reducing redundant wiring harnesses and accessories;

[0084] The range extender thermal management system is better integrated with the motor and battery. The original use of the engine water jacket heat is replaced by the use of the engine exhaust waste heat. After the exhaust waste heat and cooling water energy are recovered through the ORC thermal management system to generate electricity, the temperature can be further effectively utilized for the passenger compartment and battery and other hot compartments, with higher comprehensive utilization efficiency.

[0085] The engine 21 is directly connected to the crank, which can remove accessories such as the engine torsional vibration damper, improve power generation efficiency and reduce costs, and reduce system complexity;

[0086] The volume and weight of the range extender 2 are greatly reduced, and the integration is stronger;

[0087] Engine 21 uses a horizontally opposed engine with extremely low vibration, achieving less vibration transmission;

[0088] The existing engine control module, generator control module, thermal management control module, battery management module, and weak current management module in the drive motor management module can be integrated to reduce port and memory requirements, form a cross-domain integration of the "power domain" and the "energy domain", and reduce costs and increase efficiency;

[0089] The entire chassis 10 is designed as a sandwich structure, which wraps the core of the chassis 10 to isolate the noise of the chassis 10 and isolate the hazards of complex road conditions.

[0090] like Fig. 9 As shown, the vehicle of the embodiment of the utility model includes the chassis 10 , wheels 20 and body 30 described in any of the above embodiments, the body 30 is connected to the chassis 10 , and the wheels 20 are connected to the chassis 10 .

[0091] The entire chassis 10 and the vehicle body 30 are completely connected by wires and pipes, thereby achieving electronic communication, electrical connection and thermal management connection.

[0092] The vehicle of the embodiment of the utility model designs the chassis 10 and the body 30 in layers, realizing decoupled development of the chassis 10 and the body 30, which can greatly save development costs, shorten the development cycle, standardize the design of the chassis 10, and the entire chassis 10 uses an electrified architecture, which is very suitable for networking, intelligent, and electrified development.

[0093] Optionally, the vehicle includes the above-mentioned condenser 53 and the above-mentioned air conditioner, and the condenser 53 forms a part of the heat exchange system and / or the air conditioner.

[0094] When the condenser 53 forms a part of a heat exchange system, the condenser 53 is used as a heater of the heat exchange system. When the condenser 53 forms a part of an air conditioner, the condenser 53 is used as a condenser of the air conditioner and functions when the air conditioner is in a heating working state.

[0095] In this way, the battery pack 3 or the passenger compartment of the vehicle can be heated, the exhaust gas utilization rate of the engine 21 can be improved, and the energy consumption of the vehicle can be reduced.

[0096] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A chassis, characterized in that: include: Frame; A range extender, a battery pack and a drive motor, wherein the range extender, the battery pack and the drive motor are all arranged on the vehicle frame and connected to the vehicle frame, and the range extender includes an engine; An exhaust gas heat exchanger, an expander, and a working fluid tank, wherein the exhaust gas heat exchanger, the expander, and the working fluid tank are all arranged on the vehicle frame and connected to the vehicle frame, the exhaust gas heat exchanger is connected to the engine, the expander is connected to the exhaust gas heat exchanger, the working fluid tank is connected to the expander, and the exhaust gas heat exchanger is connected to the working fluid tank.

2. The chassis according to claim 1, characterized in that: The range extender includes an exhaust pipe extending along the length direction of the chassis, the exhaust pipe is connected to the exhaust gas heat exchanger, and the exhaust pipe is arranged on one side of the battery pack in the width direction of the chassis.

3. The chassis according to claim 2, characterized in that: The vehicle frame is provided with a mounting hole, and the exhaust pipe is embedded in the mounting hole.

4. The chassis according to claim 3, characterized in that: The frame is an extruded aluminum frame, and the mounting hole is surrounded by a portion of the frame.

5. The chassis according to any one of claims 1 to 4, characterized in that: It also includes a working fluid pump, the working fluid pump is connected to the working fluid tank, and the tail gas heat exchanger is connected to the working fluid pump; The working fluid pump is arranged on the frame and connected with the frame.

6. The chassis according to any one of claims 1 to 4, characterized in that: There are multiple drive motors, some of which are arranged between the range extender and the battery pack in the length direction of the chassis, and another part of the drive motors are arranged on a side of the battery pack away from the range extender in the length direction of the chassis.

7. The chassis according to any one of claims 1 to 4, characterized in that: The engine is a horizontally opposed engine; and / or The range extender further comprises a generator, the generator is connected to the engine, and the generator is an axial magnetic field motor; and / or The engine comprises an engine rotor and a crankshaft, wherein the engine rotor is directly connected to the crankshaft.

8. The chassis according to any one of claims 1 to 4, characterized in that: It also includes a sound absorbing cover plate, which is arranged on the top of the frame and connected to the frame, and covers at least one of the engine and the drive motor; and / or It also includes a protective cover plate, which is arranged at the bottom of the frame and connected to the frame, and covers at least a portion of the frame.

9. A vehicle, characterized in that: A chassis comprising the chassis described in any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that The vehicle includes a condenser and an air conditioner, the condenser is connected to the expander, the working fluid tank is connected to the condenser, the battery pack is provided with a heat exchange system, and the condenser forms a part of the heat exchange system and / or the air conditioner.

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