Trackless hybrid electric extended-range double-trailer EMU

Abstract

The present invention belongs to the technical field of new energy vehicles, and in particular, relates to a trackless hybrid electric range-extended double-trailer EMU. The present invention comprises a hybrid electric range-extended freight car body, a double-trailer freight car body is provided at the rear of the hybrid electric range-extended freight car body, the double-trailer freight car body is connected to the hybrid electric range-extended freight car body by a connector, and a hybrid electric range-extended power part is provided in the hybrid electric range-extended freight car body. During driving, the present invention draws air into the hybrid electric range-extended freight car body through a symmetrical multi-channel synchronous heat dissipation component, and the air flows around the hybrid electric range-extended power part, and the hybrid electric range-extended power part is cooled and dissipated in multiple directions, with good heat dissipation effect, improved power output conversion efficiency, energy saving, and increased mileage.

Description

Technical Field

[0001] The invention belongs to the technical field of new energy vehicles and relates to a trackless hybrid electric range-extended double-trailer EMU. Background Art

[0002] An extended-range electric vehicle is an electric vehicle that can achieve all its power performance in pure electric mode. When the on-board rechargeable energy storage system cannot meet the mileage requirements, the on-board auxiliary power supply device is turned on to provide power to the power system to extend the mileage. The on-board auxiliary power supply device has no transmission connection with the drive system such as a drive shaft (belt). In extended-range electric vehicles or series-parallel hybrid vehicles, the series power generation mode is used at a very high frequency. The driving force is mainly provided by the battery pack during driving. During the driving process of existing extended-range electric trucks, the battery pack needs to be cooled during use, and it is difficult to perform multi-directional synchronous cooling and heat dissipation. The heat dissipation effect is relatively general, the power output conversion efficiency is poor, the energy utilization rate is low, and the mileage is also relatively general.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a hybrid power module and an extended-range electric vehicle [application number: 202110988562.1], wherein the hybrid power module (10) includes a generator (2), a first motor controller (3) and a power distribution unit (5), wherein the power distribution unit (5) is integrated and connected to the first motor controller (3), the power distribution unit (5) and the first motor controller (3) are electrically connected, and the generator (2) is electrically connected to the first motor controller (3). However, in practical application, this solution is still difficult to perform multi-directional synchronous cooling and heat dissipation, and has the disadvantages of relatively general heat dissipation effect, poor power output conversion efficiency, low energy utilization rate, and relatively general mileage. Summary of the invention

[0004] The object of the present invention is to provide a trackless hybrid electric range-extended double-trailer EMU in view of the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A trackless hybrid electric range-extended double-trailer EMU comprises a hybrid electric range-extended freight car body, a double-trailer freight car body is arranged at the rear of the hybrid electric range-extended freight car body, the double-trailer freight car body is connected to the hybrid electric range-extended freight car body by a connector, a hybrid electric range-extended power component is arranged in the hybrid electric range-extended freight car body, a distributed reinforced bottom plate portion is arranged below the hybrid electric range-extended power component, a symmetrical multi-channel synchronous heat dissipation component is also arranged in the hybrid electric range-extended freight car body, and the symmetrical multi-channel synchronous heat dissipation component corresponds to the position of the hybrid electric range-extended power component.

[0007] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, the symmetrical multi-flow channel synchronous heat dissipation component includes a head air filling port arranged in the main body of the hybrid electric range-extended freight car, and the tail of the head air filling port is connected to the middle air filling cooling channel. The main body of the hybrid electric range-extended freight car is also provided with a head cooling member and a side cooling member, and the head cooling member and the side cooling member are respectively connected to the middle air filling cooling channel, and the head cooling member and the side cooling member respectively correspond to the positions of the hybrid electric range-extended power member.

[0008] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, the head cooling component includes a battery pack head cooling and heat dissipation hollow plate arranged in the hybrid electric range-extended freight car body, the battery pack head cooling and heat dissipation hollow plate is connected to the middle air-injection cooling channel through a plurality of straight-through grooves, and the battery pack head cooling and heat dissipation hollow plate corresponds to the position of the hybrid electric range-extended power component.

[0009] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, the side cooling component includes a plurality of side cooling and heat dissipation channels arranged in the hybrid electric range-extended freight car body, the plurality of side cooling and heat dissipation channels are symmetrically arranged along the center line of the hybrid electric range-extended freight car body, the side cooling and heat dissipation channels are connected to the middle air-injection cooling channels through oblique channels, and the side cooling and heat dissipation channels correspond to the position of the hybrid electric range-extended power component.

[0010] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, a plurality of oblique heat dissipation grooves are provided at one end of the side cooling and heat dissipation channel away from the hybrid electric range-extended power unit, and the plurality of oblique heat dissipation grooves are arranged in parallel with each other. A side baffle plate capable of reciprocating along a straight line is provided in the main body of the hybrid electric range-extended freight car, and the position of the side baffle plate corresponds to the position of the oblique heat dissipation grooves. A slide plate linear driver is also provided in the main body of the hybrid electric range-extended freight car, and the slide plate linear driver is connected to the side baffle plate.

[0011] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, two air outlet blocks that can move closer to or farther away from each other are provided in the head air inlet, and a block linear driver is provided in the main body of the hybrid electric range-extended freight car, and the block linear driver is connected to the air outlet block.

[0012] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, the hybrid electric range-extended power unit includes a battery pack unit and an internal combustion engine unit unit arranged in the hybrid electric range-extended freight car body, the battery pack unit and the internal combustion engine unit unit are connected by a power connection assembly, and the battery pack head cooling and heat dissipation hollow plate and the side cooling and heat dissipation channel respectively correspond to the position of the battery pack unit.

[0013] In the above-mentioned trackless hybrid electric extended-range double-trailer EMU, the connecting member includes a carriage connecting frame arranged between the double-trailer freight car and the hybrid electric extended-range freight car body, one end of the carriage connecting frame is fixedly connected to the double-trailer freight car, and the other end is fixedly connected to the hybrid electric extended-range freight car body.

[0014] In the above-mentioned trackless hybrid electric range-extended double-trailer EMU, the distributed reinforced bottom plate portion includes a frame external bottom plate arranged at the bottom of the hybrid electric range-extended freight car body, and a plurality of thickened reinforced plates are arranged in the frame external bottom plate.

[0015] In the above trackless hybrid electric range-extended double-trailer EMU, a plurality of reinforcing ribs are further arranged in the outer bottom plate of the frame, and the reinforcing ribs are arranged alternately with the thickened reinforcement plate.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. During driving, the hybrid electric range-extended power unit of the present invention adopts a series plug-in hybrid structure. Different from the common parallel hybrid vehicles, the range-extended vehicle is driven only by an electric motor instead of an internal combustion engine. For the range-extended hybrid vehicle, the only function of the internal combustion engine is to drive the generator to generate electricity, charge the battery, drive the motor or provide energy for other electrical equipment such as air conditioning, heating, 12V power supply, etc. During driving, air is sucked into the main body of the hybrid electric range-extended truck compartment through a symmetrical multi-channel synchronous heat dissipation component, and the air flows around the hybrid electric range-extended power unit, so that the hybrid electric range-extended power unit is cooled and dissipated in multiple directions, and the heat dissipation effect is good, thereby improving the power output conversion efficiency, saving energy, and increasing the mileage.

[0018] 2. When the present invention performs side cooling, the air in the side cooling and heat dissipation channel can be discharged from the oblique heat dissipation groove to form an open-loop air circulation with better heat dissipation effect. When it rains or the road is flooded, the slide plate linear drive is started, and the side baffle plate is moved by the slide plate linear drive to close the oblique heat dissipation groove by the side baffle plate to prevent external water from entering the oblique heat dissipation groove, thereby reducing the failure rate and improving safety.

[0019] 3. When the head air inlet needs to be closed, the present invention starts the block linear driver, and drives the air outlet block to move through the power shaft of the block linear driver, so that the two air outlet blocks abut and cooperate with each other, close the head air inlet, and form an openable and closable structure.

[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a partial structural schematic diagram of the present invention.

[0023] Figure 3 It is a partial structural schematic diagram of another aspect of the present invention.

[0024] In the figure: a hybrid electric range-extended truck compartment body 1, a double-trailer truck compartment 2, a connector 3, a hybrid electric range-extended power component 4, a distributed reinforced bottom plate 5, a symmetrical multi-channel synchronous heat dissipation component 6, a head air inlet 7, a middle air inlet cooling channel 8, a head cooling component 9, a side cooling component 10, a battery pack head cooling and heat dissipation hollow plate 100, a side cooling and heat dissipation channel 11, an oblique channel 12, an oblique heat dissipation groove 13, a side baffle plate 14, a slide plate linear drive 15, an air inlet block 16, a block linear drive 17, a battery pack 18, an internal combustion engine 19, a power connection assembly 20, a compartment connecting frame 21, a frame peripheral bottom plate 22, a thickened reinforcement plate 23, and a reinforcing rib 24. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-3As shown, a trackless hybrid electric range-extended double-trailer EMU comprises a hybrid electric range-extended freight car body 1, a double-trailer freight car body 2 is provided at the rear of the hybrid electric range-extended freight car body 1, the double-trailer freight car body 2 is connected to the hybrid electric range-extended freight car body 1 by a connector 3, a hybrid electric range-extended power component 4 is provided in the hybrid electric range-extended freight car body 1, a distributed reinforced bottom plate portion 5 is provided below the hybrid electric range-extended power component 4, a symmetrical multi-channel synchronous heat dissipation component 6 is further provided in the hybrid electric range-extended freight car body 1, and the symmetrical multi-channel synchronous heat dissipation component 6 corresponds to the position of the hybrid electric range-extended power component 4.

[0027] In this embodiment, during use, the double-hook truck compartment 2 and the hybrid electric range-extended truck compartment main body 1 are connected and fixed by the connecting member 3, and the connection effect is good. At the same time, during driving, the hybrid electric range-extended power component 4 adopts a series plug-in hybrid structure. Different from the common parallel hybrid vehicles, the range-extended vehicle is only driven by an electric motor instead of an internal combustion engine. For the range-extended hybrid vehicle, the only function of the internal combustion engine is to drive the generator to generate electricity, charge the battery, drive the motor or provide energy for other electrical equipment such as air conditioning, heating, 12V power supply, etc. When driving, air is sucked into the hybrid electric range-extended truck compartment main body 1 through the symmetrical multi-channel synchronous heat dissipation component 6, and the air flows around the hybrid electric range-extended power component 4, and the hybrid electric range-extended power component 4 is cooled and dissipated in multiple directions, with good heat dissipation effect, thereby improving the power output conversion efficiency, saving energy, and increasing the mileage.

[0028] Combination Figure 1 , Figure 2 As shown, the symmetrical multi-channel synchronous heat dissipation component 6 includes a head air intake port 7 arranged in the hybrid electric range-extended truck body 1, and the tail of the head air intake port 7 is connected to the middle air intake cooling channel 8. The hybrid electric range-extended truck body 1 is also provided with a head cooling member 9 and a side cooling member 10, and the head cooling member 9 and the side cooling member 10 are respectively connected to the middle air intake cooling channel 8, and the head cooling member 9 and the side cooling member 10 respectively correspond to the positions of the hybrid electric range-extended power member 4.

[0029] Specifically, during the driving process of the hybrid electric range-extended truck body 1, air is injected into the bottom of the hybrid electric range-extended truck body 1 from the head air inlet 7, and then flows into the head cooling member 9 and the side cooling member 10 through the middle air injection cooling channel 8. The head of the hybrid electric range-extended power member 4 is cooled and dissipated by the head cooling member 9, and the side of the hybrid electric range-extended power member 4 is cooled and dissipated by the side cooling member 10. The air flows around the hybrid electric range-extended power member 4, and the hybrid electric range-extended power member 4 is cooled and dissipated in multiple directions. The heat dissipation effect is good, the power output conversion efficiency is improved, energy is saved, and the mileage is increased.

[0030] Combination Figure 1 , Figure 2 As shown, the head cooling component 9 includes a battery pack head cooling and heat dissipation hollow plate 100 arranged in the hybrid electric range-extended truck body 1, and the battery pack head cooling and heat dissipation hollow plate 100 is connected to the middle air-injection cooling channel 8 through a plurality of straight-through grooves, and the battery pack head cooling and heat dissipation hollow plate 100 corresponds to the position of the hybrid electric range-extended power component 4.

[0031] In this embodiment, when driving, air enters into the hollow cooling and heat dissipation plate 100 at the head of the battery pack through the straight-through groove. The hollow cooling and heat dissipation plate 100 at the head of the battery pack is hollow and can be used to accumulate air. The head of the hybrid electric range extender power component 4 is cooled and dissipated through the hollow cooling and heat dissipation plate 100 at the head of the battery pack, and the cooling effect is good.

[0032] The side cooling component 10 includes a plurality of side cooling and heat dissipation channels 11 arranged in the hybrid electric range-extended truck body 1. The plurality of side cooling and heat dissipation channels 11 are symmetrically arranged along the center line of the hybrid electric range-extended truck body 1. The side cooling and heat dissipation channels 11 are connected to the middle air-injection cooling channel 8 through an oblique channel 12. The side cooling and heat dissipation channels 11 correspond to the position of the hybrid electric range-extended power component 4.

[0033] In this embodiment, when driving, air flows into the side cooling and heat dissipation channel 11 through the oblique flow channel 12, and the side of the hybrid electric range-extending power component 4 is cooled and dissipated through the side cooling and heat dissipation channel 11, forming multi-directional synchronous cooling, with good cooling effect, improving the power output conversion efficiency, saving energy, and increasing the mileage.

[0034] Combination Figure 2As shown, the side cooling and heat dissipation channel 11 is provided with a plurality of oblique heat dissipation grooves 13 at one end away from the hybrid electric range-extending power part 4, and the plurality of oblique heat dissipation grooves 13 are arranged parallel to each other. The hybrid electric range-extending truck body 1 is provided with a side baffle plate 14 that can reciprocate along a straight line, and the side baffle plate 14 corresponds to the position of the oblique heat dissipation grooves 13. The hybrid electric range-extending truck body 1 is also provided with a slide plate linear driver 15, and the slide plate linear driver 15 is connected to the side baffle plate 14.

[0035] In this embodiment, when side cooling is performed, the air in the side cooling and heat dissipation channel 11 can be discharged from the oblique heat dissipation groove 13 to form an open-loop air circulation with a better heat dissipation effect. When it rains or the road is flooded, the slide plate linear driver 15 is started, and the side baffle plate 14 is moved by the slide plate linear driver 15. The oblique heat dissipation groove 13 is closed by the side baffle plate 14 to prevent external water from entering the oblique heat dissipation groove 13, thereby reducing the failure rate and improving safety. Those skilled in the art should understand that the slide plate linear driver 15 can use a cylinder or a linear motor.

[0036] The head air inlet 7 is provided with two air outlet blocks 16 which can be moved closer to or farther away from each other. The hybrid electric range-extended truck body 1 is provided with a block linear driver 17 , and the block linear driver 17 is connected to the air outlet block 16 .

[0037] In this embodiment, when it is necessary to close the head air filling port 7, the block linear driver 17 is started, and the air outlet block 16 is driven to move by the power shaft of the block linear driver 17, so that the two air outlet blocks 16 abut against each other to close the head air filling port 7 and form an openable and closable structure. Those skilled in the art should understand that the block linear driver 17 can be a cylinder or a linear motor.

[0038] The hybrid electric range-extended power unit 4 includes a battery pack 18 and an internal combustion engine 19 arranged in the hybrid electric range-extended truck body 1. The battery pack 18 and the internal combustion engine 19 are connected by a power connection assembly 20. The battery pack head cooling and heat dissipation hollow plate 100 and the side cooling and heat dissipation channel 11 correspond to the position of the battery pack 18 respectively.

[0039] In this embodiment, the battery pack 18 and the internal combustion engine 19 adopt a series plug-in hybrid structure. Unlike the common parallel hybrid vehicles, the extended-range vehicle is driven only by an electric motor instead of an internal combustion engine. For the extended-range hybrid vehicle, the only function of the internal combustion engine 19 is to drive the generator to generate electricity, charge the battery pack 18, drive the motor or provide energy for other electrical equipment such as air conditioning, heating, 12V power supply, etc. The power connection assembly 20 is used to connect the battery pack 18 and the internal combustion engine 19.

[0040] Combination Figure 1 As shown, the connecting member 3 includes a carriage connecting frame 21 arranged between the double-hook truck carriage 2 and the hybrid electric extended-range truck carriage body 1, one end of the carriage connecting frame 21 is fixedly connected to the double-hook truck carriage 2, and the other end is fixedly connected to the hybrid electric extended-range truck carriage body 1.

[0041] In this embodiment, the carriage connecting frame 21 connects and fixes the double-hook truck carriage 2 and the hybrid electric range-extended truck carriage body 1, and the fixing effect is good.

[0042] Combination Figure 1 , Figure 3 As shown, the distributed reinforced bottom plate portion 5 includes a frame external bottom plate 22 arranged at the bottom of the hybrid electric range-extended truck body 1, and a plurality of thickened reinforced plates 23 are arranged inside the frame external bottom plate 22.

[0043] In this embodiment, the frame external bottom plate 22 protects the bottom of the hybrid electric range-extended truck body 1, and the thickened reinforcement plate 23 can further enhance the protection of the battery pack 18 and the internal combustion engine pack 19, thereby improving the protection level.

[0044] Combination Figure 3 As shown, a plurality of reinforcing ribs 24 are further provided in the frame outer bottom plate 22 , and the reinforcing ribs 24 and the thickened strengthening plate 23 are arranged alternately.

[0045] In this embodiment, the reinforcing ribs 24 strengthen the overall structure of the frame peripheral bottom plate 22, making it more secure.

[0046] The working principle of the present invention is:

[0047] During use, the double-hook truck compartment 2 and the hybrid electric range-extended truck compartment body 1 are connected and fixed by the compartment connecting frame 21, and the connection effect is good. At the same time, during driving, the battery pack 18 and the internal combustion engine 19 adopt a series plug-in hybrid structure. Different from the common parallel hybrid vehicles, the range-extended vehicle is only driven by an electric motor instead of an internal combustion engine. For the range-extended hybrid vehicle, the only function of the internal combustion engine 19 is to drive the generator to generate electricity, charge the battery pack 18, drive the motor or provide energy for other electrical equipment such as air conditioning, heating, 12V power supply, etc. The power connection assembly 20 is used to connect the battery pack 18 and the internal combustion engine 19.

[0048] The air is poured into the bottom of the hybrid electric range-extended truck compartment body 1 from the head air filling port 7, and then flows into the head cooling member 9 and the side cooling member 10 through the middle air filling cooling channel 8. The head of the battery pack 18 is cooled and dissipated through the head cooling member 9, and the side of the battery pack 18 is cooled and dissipated through the side cooling member 10. The air flows around the battery pack 18 to perform multi-directional cooling and dissipation on the hybrid electric range-extended power member 4, with a good heat dissipation effect, thereby improving the power output conversion efficiency, saving energy, and increasing the mileage.

[0049] When driving, air enters the cooling and heat dissipation hollow plate 100 of the battery pack head through the straight groove. The cooling and heat dissipation hollow plate 100 of the battery pack head is hollow and can be used to accumulate air. The cooling and heat dissipation hollow plate 100 of the battery pack head cools and dissipates the head of the battery pack 18, and the cooling effect is good. The air flows into the side cooling and heat dissipation channel 11 through the oblique flow channel 12, and the side of the battery pack 18 is cooled and dissipated through the side cooling and heat dissipation channel 11, forming multi-directional synchronous cooling, and the cooling effect is good.

[0050] When side cooling is performed, the air in the side cooling and heat dissipation channel 11 can be discharged from the oblique heat dissipation groove 13 to form an open-loop air circulation, and the heat dissipation effect is better. When it rains or the road is flooded, the slide plate linear driver 15 is started, and the side baffle plate 14 is moved by the slide plate linear driver 15, and the oblique heat dissipation groove 13 is closed by the side baffle plate 14 to prevent external water from entering the oblique heat dissipation groove 13, thereby reducing the failure rate and improving safety.

[0051] When the head air inlet 7 needs to be closed, the block linear driver 17 is started, and the air outlet block 16 is driven to move by the power shaft of the block linear driver 17, so that the two air outlet blocks 16 abut against each other, and the head air inlet 7 is closed to form an openable and closable structure.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0053] Although the hybrid electric range-extended truck body 1, double-hook truck body 2, connector 3, hybrid electric range-extended power part 4, distributed reinforced bottom plate 5, symmetrical multi-channel synchronous heat dissipation assembly 6, head air inlet 7, middle air inlet cooling channel 8, head cooling part 9, side cooling part 10, battery head cooling and heat dissipation hollow plate 100, side cooling and heat dissipation channel 11, oblique channel 12, oblique heat dissipation groove 13, side baffle plate 14, slide plate linear drive 15, air inlet block 16, block linear drive 17, battery pack 18, internal combustion engine 19, power connection assembly 20, car body connecting frame 21, frame peripheral bottom plate 22, thickened reinforced plate 23, reinforcing rib 24 and other terms are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention, and interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A trackless hybrid electric range-extended double-trailer EMU, comprising a hybrid electric range-extended freight car body (1), characterized in that: The rear of the hybrid electric range-extended truck body (1) is provided with a double-hook truck body (2), the double-hook truck body (2) is connected to the hybrid electric range-extended truck body (1) via a connecting piece (3), a hybrid electric range-extended power unit (4) is provided inside the hybrid electric range-extended truck body (1), a distributed reinforced bottom plate (5) is provided below the hybrid electric range-extended power unit (4), and a symmetrical multi-channel synchronous heat dissipation component (6) is further provided inside the hybrid electric range-extended truck body (1), the symmetrical multi-channel synchronous heat dissipation component (6) corresponding to the position of the hybrid electric range-extended power unit (4); The symmetrical multi-channel synchronous heat dissipation component (6) comprises a head air inlet (7) arranged in the hybrid electric range-extended truck body (1), the tail of the head air inlet (7) is connected to a middle air inlet cooling channel (8), the hybrid electric range-extended truck body (1) is further provided with a head cooling element (9) and a side cooling element (10), the head cooling element (9) and the side cooling element (10) are respectively connected to the middle air inlet cooling channel (8), and the head cooling element (9) and the side cooling element (10) respectively correspond to the positions of the hybrid electric range-extended power element (4); The head cooling element (9) comprises a battery pack head cooling and heat dissipation hollow plate (100) arranged in the hybrid electric range-extending truck compartment body (1), the battery pack head cooling and heat dissipation hollow plate (100) and the middle air-injection cooling channel (8) are connected via a plurality of straight-through grooves, and the battery pack head cooling and heat dissipation hollow plate (100) corresponds to the position of the hybrid electric range-extending power element (4); The side cooling element (10) comprises a plurality of side cooling and heat dissipation channels (11) arranged in the hybrid electric range-extended truck body (1), wherein the plurality of side cooling and heat dissipation channels (11) are symmetrically arranged along the center line of the hybrid electric range-extended truck body (1); The side cooling and heat dissipation channel (11) is provided with a plurality of oblique heat dissipation grooves (13) at one end away from the hybrid electric range-extending power unit (4), and the plurality of oblique heat dissipation grooves (13) are arranged in parallel with each other. The hybrid electric range-extending truck body (1) is provided with a side baffle plate (14) capable of linear reciprocating motion, and the position of the side baffle plate (14) corresponds to the position of the oblique heat dissipation grooves (13). The hybrid electric range-extending truck body (1) is also provided with a slide plate linear driver (15), and the slide plate linear driver (15) is connected to the side baffle plate (14).

2. The trackless hybrid electric range-extended double-trailer EMU according to claim 1, characterized in that: The head air inlet (7) is provided with two air outlet blocks (16) that can move closer to or farther away from each other, and the hybrid electric range-extended truck compartment body (1) is provided with a block linear driver (17), and the block linear driver (17) is connected to the air outlet block (16).

3. The trackless hybrid electric range-extended double-trailer EMU according to claim 2, characterized in that: The hybrid electric range-extending power unit (4) comprises a battery pack (18) and an internal combustion engine (19) disposed in a hybrid electric range-extending truck compartment body (1); the battery pack (18) and the internal combustion engine (19) are connected via a power connection assembly (20); and the battery pack head cooling and heat dissipation hollow plate (100) and the side cooling and heat dissipation channel (11) respectively correspond to the position of the battery pack (18).

4. The trackless hybrid electric range-extended double-trailer EMU according to claim 3, characterized in that: The connecting member (3) comprises a carriage connecting frame (21) arranged between the double-hook truck carriage (2) and the hybrid electric range-extended truck carriage body (1); one end of the carriage connecting frame (21) is fixedly connected to the double-hook truck carriage (2), and the other end is fixedly connected to the hybrid electric range-extended truck carriage body (1).

5. The trackless hybrid electric range-extended double-trailer EMU according to claim 4, characterized in that: The distributed reinforced bottom plate portion (5) comprises a frame external bottom plate (22) arranged at the bottom of the hybrid electric range-extended truck body (1), and a plurality of thickened reinforced plates (23) are arranged inside the frame external bottom plate (22).

6. The trackless hybrid electric range-extended double-trailer EMU according to claim 5, characterized in that: A plurality of reinforcing ribs (24) are also provided in the frame outer bottom plate (22), and the reinforcing ribs (24) and the thickened reinforcement plate (23) are arranged in an alternating manner.

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