CN220615623U - Trailer caravan - Google Patents

Abstract

The utility model discloses a trailer caravan. The trailer comprises a vehicle body, an energy storage battery pack and a solar module. The energy storage battery pack is arranged on the vehicle body. The solar module includes a solar panel. The solar panel is arranged on the surface of the vehicle body. The solar energy component is electrically connected with the energy storage battery pack. The solar assembly is configured to charge an energy storage battery pack and/or a power battery pack of a tractor using electrical energy output by the solar panel. The energy storage battery pack is used for charging the power battery pack. Above-mentioned trailer, the electric energy of being exported by solar panel charges for energy storage battery package, can promote the power supply ability of energy storage battery package, and the electric energy of energy storage battery package can charge for the power battery package of tractor, can promote the continuation of the journey mileage of tractor, and then promotes user experience.

Description

Trailer caravan

Technical Field

The utility model relates to the technical field of caravans, in particular to a trailer caravans.

Background

At present, urban life is becoming more and more intense, people tend to approach nature in leisure time to relax pressure, for example, people can pull caravans to camping outdoors with tractor connections. With the rise of new energy automobiles, the use of new energy automobiles as tractors is also one of the options. However, the new energy automobile is limited by the capacity of the power battery, and the endurance mileage is limited, so that the user experience is reduced.

Disclosure of Invention

The embodiment of the utility model provides a trailer caravan for solving at least one technical problem.

The embodiment of the utility model provides a trailer caravan, which comprises:

a vehicle body;

the energy storage battery pack is arranged on the vehicle body; and

the solar module comprises a solar panel, the solar panel is arranged on the surface of the vehicle body, the solar module is electrically connected with the energy storage battery pack, the solar module is configured to charge the energy storage battery pack and/or a power battery pack of the tractor by utilizing electric energy output by the solar panel, and the energy storage battery pack is used for charging the power battery pack.

Above-mentioned trailer, the electric energy of being exported by solar panel charges for energy storage battery package, can promote the power supply ability of energy storage battery package, and the electric energy of energy storage battery package can charge for the power battery package of tractor, can promote the continuation of the journey mileage of tractor, and then promotes user experience.

In some embodiments, the energy storage battery pack is configured to charge a power battery pack of the tractor in the event that a remaining charge of the energy storage battery pack is greater than a first preset charge. Thus, the overflow of the electric quantity of the energy storage battery pack can be avoided.

In some embodiments, the energy storage battery pack is configured to charge the power battery pack of the tractor in the event that the remaining power of the power battery pack is less than a second preset power. In this way, the electric quantity of the tractor is not enough to avoid being trapped.

In some embodiments, the energy storage battery pack is mounted to the underbody. Therefore, the gravity center can be lowered, and the running stability of the trailer caravan is improved.

In some embodiments, the trailer comprises a connection frame, the connection frame is connected with the tractor, and a connector for connecting with the tractor charging interface is arranged on the connection frame. In this way, the simplified connection structure can be improved.

In some embodiments, the connection frame comprises a connection tube, and the energy storage battery pack is arranged in the connection tube. Thus, the electric quantity and the structural strength of the energy storage battery pack can be improved.

In some embodiments, the bottom of the vehicle body is provided with a heat transfer floor, the energy storage battery pack comprises a liquid cooling module and a battery module, the liquid cooling module comprises a liquid cooling pipe and a driving piece, the driving piece is used for driving fluid in the liquid cooling pipe to flow, and the liquid cooling pipe is connected with the battery module and the heat transfer floor in a heat conduction mode. In this way, the temperature of the energy storage battery pack may be reduced.

In some embodiments, a living space is arranged in the vehicle body, a heat transfer air duct is arranged on the inner wall of the living space, an air outlet of the heat transfer air duct is communicated with the living space, the energy storage battery pack comprises a cooling fan and a battery module, the cooling fan is used for cooling the battery module in an air-cooling mode, and hot air formed by cooling the battery module is blown into the heat transfer air duct. In this way, the temperature of the energy storage battery pack may be reduced.

In some embodiments, the solar module includes a cleaning device including a motor and a brush, the motor being connected to the brush, the brush being disposed on and in contact with the solar panel, the motor being configured to drive the brush to rotate so that the brush cleans the solar panel. In this way, the solar panel energy conversion efficiency can be improved.

In some embodiments, the solar module comprises a cleaning device comprising a cleaning fan and a cleaning duct, an air outlet of the cleaning duct facing the solar panel, the cleaning fan being configured to create an air flow within the cleaning duct, the air flow being blown towards the solar panel through the air outlet of the cleaning duct. In this way, the solar panel energy conversion efficiency can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic illustration of a connection of a tractor to a tractor of an embodiment of the present utility model;

fig. 2 and 3 are structural sectional views of a trailer of an embodiment of the present utility model;

fig. 4 and 5 are structural cross-sectional views of a solar module according to an embodiment of the present utility model.

Description of main reference numerals:

the vehicle comprises a trailer body-100, a vehicle body-10, wheels-11, an energy storage battery pack-20, a liquid cooling module-22, a liquid cooling pipe-222, a driving piece-221, a battery module-21, a cooling fan-23, a heat transfer air duct-231, a solar module-30, a solar panel-31, a cleaning device-32, a motor-321, a brush-322, a guide rail-323, a cleaning fan-324, a cleaning air duct-325, an air outlet-3251, an air inlet-3252, a fixed support-33, a connecting frame-40, a connector-41, a connecting pipe-42, a heat transfer floor-50, a living space-60 and a tractor-200.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

A trailer caravan 100 according to an embodiment of the present utility model includes a body 10, an energy storage battery pack 20, and a solar module 30. The energy storage battery pack 20 is mounted on the vehicle body 10. The solar module 30 includes a solar panel 31. The solar panel 31 is provided on the surface of the vehicle body 10. The solar module 30 is electrically connected to the energy storage battery pack 20. The solar module 30 is configured to charge the energy storage battery pack 20 and/or a power battery pack (not shown) of the tractor 200 with electrical energy output from the solar panel 31. The energy storage battery pack 20 is used to charge the power battery pack.

Above-mentioned trailer 100, the electric energy of being exported by solar panel 31 charges for energy storage battery package 20, can promote the power supply ability of energy storage battery package 20, and the electric energy of energy storage battery package 20 can charge for the power battery package of tractor 200, can promote the continuation of the journey mileage of tractor 200, and then promotes user experience.

Referring to fig. 1 and 2, in one embodiment, a tractor 100 in combination with a tractor 200 may enable people to keep away from urban life while meeting modern living experiences. The trailer 100 can accommodate a variety of functions, such as viewing, electronic entertainment, cooking, etc., but such activities require power consumption. In the open air far from the charging device, it is difficult to meet the long standing-out requirement by only powering the energy storage battery pack 20, or a larger space is required to accommodate more energy storage battery packs 20. Thus, by adding the solar module 30, the energy storage battery pack 20 can be charged with solar energy during outdoor camping to supplement the energy of the energy storage battery pack 20, thereby supporting a long-term outdoor leisure experience. In addition, the solar module 30 can charge the power battery pack of the tractor 200 or the energy storage battery pack 20 can charge the power battery pack of the tractor 200, so that the condition that the tractor 200 is trapped outdoors due to insufficient power can be avoided. In addition, a solar panel 31 of the solar module 30 may be provided on the surface of the vehicle body 10. In some embodiments, the solar panel 31 is disposed on the top surface of the vehicle body 10, and by adjusting the orientation of the solar panel 31, the efficiency of the solar panel 31 may be improved. Of course, the solar panel 31 may be disposed at both the top and side surfaces of the vehicle body 10 to increase the area of the solar panel 31, thereby obtaining more solar energy. Meanwhile, the solar module 30 may also receive the solar panel 31 in a telescopic or folding manner, so that the occupied area of the solar module 30 may be reduced when driving.

Referring to fig. 1, in some embodiments, in a case where the remaining power of the energy storage battery pack 20 is greater than the first preset power, the energy storage battery pack 20 is used to charge the power battery pack of the tractor 200.

In this way, the overflow of the power of the energy storage battery pack 20 can be avoided.

Specifically, referring to fig. 1, in one embodiment, the trailer caravan 100 may include a control module, and the control module may detect a remaining power of the energy storage battery pack 20 and adjust an output of the energy storage battery pack 20 according to the remaining power and a first preset power. The first preset electric quantity can be 80% of the maximum electric quantity of the energy storage battery pack 20, and when the solar module 30 continuously charges the energy storage battery pack 20 until the electric quantity of the energy storage battery pack 20 is larger than the first preset electric quantity, the control module can control the energy storage battery pack 20 to charge the power battery pack of the tractor 200, so that the electric quantity of the energy storage battery pack 20 can be prevented from overflowing, and the utilization efficiency of solar energy is improved. Under the condition that the electric quantity of the energy storage battery pack 20 is smaller than or equal to the first preset electric quantity, the control module can control the energy storage battery pack 20 to cut off the charging of the tractor 200, so that the use of other electric equipment is guaranteed. In addition, in another embodiment, the control module may also cut off the output of the energy storage battery pack 20 when the power of the energy storage battery pack 20 is too low, so as to avoid the battery damage caused by the overdischarge of the energy storage battery. For example, the output may be cut off when the charge of the energy storage battery pack 20 is less than 3% of the maximum charge. In yet another embodiment, the control module may include a controller on the trailer car 100.

Referring to fig. 1, in some embodiments, the energy storage battery pack 20 is used to charge the power battery pack of the tractor 200 in the case that the remaining power of the power battery pack is less than the second preset power.

In this way, the electric power of the tractor 200 is not enough to avoid being trapped.

Specifically, referring to fig. 1, in one embodiment, the energy storage battery pack 20 may include a control module, and the control module may obtain a remaining power of the power battery pack and adjust an output of the energy storage battery pack 20 according to the remaining power and a second preset power. The second preset electric quantity may be 20% of the maximum electric quantity of the power battery pack, and the control module may control the energy storage battery pack 20 to charge the power battery pack of the tractor 200 when the power battery pack continues to consume the remaining electric quantity smaller than the second preset electric quantity, so as to avoid the situation that the tractor 200 cannot run and is trapped due to too low electric quantity of the power battery pack. In addition, when the tractor 200 detects that the power battery pack is continuously consumed until the remaining electric quantity is smaller than the second preset electric quantity, the tractor 200 may send a charging signal to the trailer 100, and when the control module receives the charging signal sent by the tractor 200, the control module controls the energy storage battery pack 20 to charge the power battery pack of the tractor 200. In another embodiment, the control module may also control the solar module 30 to charge the power cells of the tractor 200 directly.

Referring to fig. 2, in some embodiments, an energy storage battery pack 20 is mounted to the bottom of the vehicle body 10.

In this way, the center of gravity can be lowered, and the running stability of the trailer 100 can be improved.

Specifically, referring to FIG. 2, in one embodiment, a trailer caravan 100 supports a vehicle body 10 via wheels 11 at the bottom. By disposing the energy storage battery pack 20 at the bottom of the vehicle body 10, the center of gravity of the trailer 100 can be moved downward to approach the supporting point thereof, so that the possibility of rollover when subjected to strong wind can be reduced, and the amplitude of shaking of the vehicle body 10 when the road surface bumps can be reduced. In addition, compared with other side surfaces of the vehicle body 10, the bottom of the vehicle body 10 can effectively avoid direct sunlight, so that the temperature rise degree of the bottom of the vehicle body 10 due to solar radiation is smaller. The energy storage battery pack 20 is arranged at the bottom of the vehicle body 10, so that the environment temperature of the energy storage battery pack 20 during working is lower, and the heat dissipation effect of the energy storage battery pack 20 is improved.

Referring to fig. 2, in some embodiments, a trailer caravan 100 includes a connection bracket 40. The hitch 40 is coupled to the towing vehicle 200. The connector frame 40 is provided with a connector 41 for interfacing with the charging of the tractor 200.

In this way, the simplified connection structure can be improved.

Specifically, referring to fig. 2, in one embodiment, in the connected state, the tractor 100 is connected to the tractor 200 through the connection frame 40, so that the tractor 200 can drive the tractor 100 to move. In the disconnected state, the trailer 100 may be parked alone, and the tractor 200 may be disconnected from the connection frame 40 to be moved alone. The hitch 40 may be coupled to the structural frame of the tractor 200 by means of a movable clasp, clamp, chain, or the like. The link 40 may also include a telescopic structure to provide a buffer during acceleration or deceleration of the tractor 200 to ensure smooth start or stop of the trailer 100. The connection frame 40 is further integrated with a connector 41, and the connector 41 is used for connecting the charging interface of the tractor 200 and the energy storage battery pack 20, so that the electric energy converted by the solar module 30 can charge the power battery pack of the tractor 200 through the energy storage battery pack 20. In another embodiment, the solar module 30 may also be directly connected to the power battery pack of the tractor 200 through the connector 41 to charge the power battery pack with the electric energy output from the solar panel 31.

In addition, the connecting frame 40 may integrate a communication interface, and communication can be established between the tractor 200 and the trailer 100 through the communication interface, so as to realize functions of synchronous braking and the like of the tractor 200 and the trailer 100, and improve the degree of intelligence. The communication interface can also send a turn-off signal to the tractor 100 when the tractor 200 completes charging, so as to disconnect the tractor 200 from the energy storage battery pack 20 and avoid overcharging the tractor 200.

Referring to fig. 2, in some embodiments, the connector 40 includes a connecting tube 42. The connection pipe 42 is provided therein with the energy storage battery pack 20.

In this way, the electrical quantity and structural strength of the energy storage battery pack 20 can be improved.

Specifically, referring to fig. 2, in one embodiment, the connection frame 40 includes a connection pipe 42 as a connection structure, and the connection pipe 42 has a certain structural strength for connecting the tractor 200 and supporting the trailer car 100. For example, the connecting tube 42 may be Q235 steel, and its tensile strength is not less than 370MPa. Under the condition that the energy storage battery pack 20 adopts a cylindrical battery core, the battery core can be arranged in the connecting pipe 42 with a circular section, so that more battery cores can be accommodated, the electric quantity of the energy storage battery pack 20 is improved, in addition, the energy storage battery pack 20 is wrapped by the connecting pipe 42, the energy storage battery pack 20 can be protected by using a material with higher strength, and the structural strength of the energy storage battery pack 20 is improved. In another embodiment, the energy storage battery may also use square cells, and the connection tube 42 may use a square section steel tube to improve space utilization.

Referring to fig. 2, in some embodiments, the bottom of the body 10 is provided with a heat transfer floor 50. The energy storage battery pack 20 includes a liquid cooling module 22 and a battery module 21. The liquid cooling module 22 includes a liquid cooling pipe 222 and a driving member 221. The driving member 221 is used for driving the fluid flow in the liquid-cooled tube 222. The liquid cooling pipe 222 is thermally connected with the battery module 21 and the heat transfer floor 50.

In this way, the temperature of the energy storage battery pack 20 can be reduced.

Specifically, referring to fig. 2, the thermal effect of the battery module 21 during the charge and discharge process can gradually increase the temperature of the battery module 21, and when the temperature of the battery module 21 is too high, the thermal runaway of the power core can be caused to cause a fire disaster, so that the liquid cooling module can be configured to cool the battery module 21 to ensure the normal operation of the battery module 21. In one embodiment, the liquid cooling module 22 may be formed by winding the battery module 21 with the liquid cooling tube 222, wherein the tube wall of the liquid cooling tube 222 is adjacent to the battery module 21 to absorb heat of the battery module 21, and the fluid in the liquid cooling tube 222 is in heat exchange with the tube wall to reduce the tube wall temperature, so as to ensure continuous heat exchange between the tube wall and the battery module 21, and the fluid is driven by the driving member 221 to continuously discharge the high-temperature fluid in the liquid cooling tube 222 wound around the battery module 21 and discharge the low-temperature fluid into the liquid cooling tube 222 wound around the battery module 21, so as to ensure heat exchange between the fluid and the tube wall. By winding the battery module 21 by the liquid cooling pipe 222, the contact area between the liquid cooling pipe 222 and the battery module 21 can be increased, and the heat transfer efficiency can be improved. In addition, the bottom of the vehicle body 10 further includes a heat transfer floor 50, and the liquid-cooled tube 222 is laid under the heat transfer floor 50 to discharge heat through the heat transfer floor 50. The driving member 221 may drive the high-temperature fluid in the liquid cooling pipe 222 to flow under the heat transfer floor 50, convert the high-temperature fluid into the low-temperature fluid through heat exchange with the heat transfer floor 50, and flow back to the battery module 21 under the driving of the driving member 221 to exchange heat with the battery module 21. Therefore, the liquid cooling module 22 can continuously take away the heat generated by the battery module 21, so that the battery module 21 can be maintained at a proper working temperature.

Referring to FIG. 3, in some embodiments, a living space 60 is provided within the body 10. The inner wall of the living space 60 is provided with a heat transfer air duct 231. The air outlet 3251 of the heat transfer air duct 231 communicates with the living space 60. The energy storage battery pack 20 includes a heat radiation fan 23 and a battery module 21. The heat dissipation fan 23 is used for cooling the battery module 21 by air, and blowing hot air formed by cooling the battery module 21 into the heat transfer air duct 231.

In this way, the temperature of the energy storage battery pack 20 can be reduced.

Specifically, referring to fig. 3, in one embodiment, the energy storage battery pack 20 may further cool the battery module 21 by air cooling. The cooling fan 23 may suck cool air in the surrounding environment and blow it toward the battery module 21. The cool air is converted into hot air after heat exchange with the battery module 21 and flows to the heat transfer duct 231, so that heat generated from the battery module 21 can be continuously taken away. The hot air may flow into the living space 60 from the air outlet 3251 of the heat transfer air duct 231. The heat transfer air duct 231 may be provided with a plurality of air outlets 3251, so that hot air aggregation caused by a single air outlet 3251 may be avoided. Meanwhile, compared to a single air outlet 3251, the air speed of the plurality of air outlets 3251 is slower, and the influence on the living space 60 is smaller.

Referring to fig. 4, in some embodiments, the solar module 30 includes a cleaning device 32. The cleaning device 32 comprises a motor 321 and a brush 322. The motor 321 is connected to the brush 322. The brush 322 is provided on the solar panel 31 and contacts the solar panel 31. The motor 321 is used to drive the brush 322 to rotate so that the brush 322 cleans the solar panel 31.

In this way, the energy conversion efficiency of the solar panel 31 can be improved.

Specifically, referring to fig. 4, in the operating state of the solar module 30, the solar panel 31 is continuously exposed to the air, and dust in the air gradually deposits and adheres to the solar panel 31, so that the adhering dust can shield the sun, and the area of the solar panel 31 receiving the illumination is reduced, thereby reducing the energy conversion efficiency of the solar panel 31. Therefore, the cleaning device 32 is provided to clean dust, which can ensure the area of the solar panel 31 receiving solar irradiation, and is beneficial to improving the conversion efficiency of the solar module 30. In one embodiment, solar module 30 includes a stationary bracket 33. The solar panel 31 and the cleaning device 32 are fixed to the surface of the vehicle body 10 by a fixing bracket 33. The brush 322 may be disposed in the left-right direction and is equal in length to the front and rear sides of the solar panel 31 and may be movable in the front and rear directions of the solar panel 31 so that the area through which the brush 322 may brush covers the surface of the solar panel 31. The cleaning device 32 may further include a guide rail 323 to which the brush 322 is fixed, the guide rail 323 being provided to extend in the front-rear direction of the solar panel 31. The motor 321 can drive the brush 322 to reciprocate back and forth along the guide rail 323 to perform the cleaning action. Of course, the brush 322 may be provided in the front-rear direction and slid laterally.

Referring to fig. 5, in some embodiments, the solar module 30 includes a cleaning device 32. The cleaning device 32 includes a cleaning fan 324 and a cleaning air duct 325. The air outlet 3251 of the cleaning air duct 325 faces the solar panel 31. The cleaning fan 324 is used to create an air flow within the cleaning duct 325. The air flow is blown to the solar energy surface through the air outlet 3251 of the cleaning air duct 325.

In this way, the energy conversion efficiency of the solar panel 31 can be improved.

Specifically, referring to fig. 5, in one embodiment, the cleaning device 32 may clean dust on the solar panel 31 by using wind, which may avoid scratching the solar panel 31 compared to cleaning by using the brush 322, and may not block illumination when cleaning by using wind, thereby further improving the energy conversion efficiency of the solar panel 31. The cleaning fan 324 of the cleaning device 32 may be disposed at the left side of the solar module 30, and the air inlet 3252 may be opened at the left side of the solar module 30. The outside air enters the cleaning duct 325 from the air inlet 3252 and is blown out from the air outlet 3251 by the cleaning fan 324. The air outlet 3251 may be provided in plurality and uniformly distributed on the surface of the solar panel 31 to avoid dead angle cleaning. The plurality of air outlets 3251 are uniformly directed to the right and toward the solar panel 31 to improve cleaning efficiency. Of course, the position of the cleaning fan 324 and the bias of the air outlet 3251 are not unique, and in another embodiment, the solar panel 31 may be disposed obliquely, the cleaning fan 324 may be disposed on a higher side of the solar panel 31, and the air outlet 3251 may be biased to the other side and blow the air downward toward the solar panel 31.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many variations, combinations, modifications, substitutions and alterations of these embodiments may be made without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A trailer caravan, comprising:

a vehicle body;

the energy storage battery pack is arranged on the vehicle body; and

the solar module comprises a solar panel, the solar panel is arranged on the surface of the vehicle body, the solar module is electrically connected with the energy storage battery pack, the solar module is configured to charge the energy storage battery pack and/or a power battery pack of the tractor by utilizing electric energy output by the solar panel, and the energy storage battery pack is used for charging the power battery pack.

2. The tractor as defined by claim 1, wherein the energy storage battery pack is configured to charge a power battery pack of the tractor if a remaining power of the energy storage battery pack is greater than a first preset power.

3. The tractor as defined by claim 1, wherein the energy storage battery pack is configured to charge a power battery pack of the tractor in the event that a remaining power of the power battery pack is less than a second preset power.

4. The trailer as recited in claim 1, wherein said energy storage battery pack is mounted to said underbody.

5. The tractor as defined by claim 1 wherein the tractor includes a connection bracket connected to the tractor, the connection bracket having a connector for connection to the tractor charging interface.

6. The trailer caravan of claim 5, wherein the connection frame comprises a connection tube having the energy storage battery pack disposed therein.

7. The trailer caravan of claim 1, wherein a heat transfer floor is disposed at a bottom of the car body, the energy storage battery pack comprises a liquid cooling module and a battery module, the liquid cooling module comprises a liquid cooling pipe and a driving member, the driving member is used for driving fluid in the liquid cooling pipe to flow, and the liquid cooling pipe is connected with the battery module and the heat transfer floor in a heat conducting manner.

8. The trailer as claimed in claim 1, wherein a living space is provided in the vehicle body, a heat transfer air duct is provided on an inner wall of the living space, an air outlet of the heat transfer air duct is communicated with the living space, the energy storage battery pack comprises a cooling fan and a battery module, the cooling fan is used for cooling the battery module, and hot air formed by cooling the battery module is blown into the heat transfer air duct.

9. The tractor as defined by claim 1 wherein the solar module includes a cleaning device, the cleaning device including a motor and a brush, the motor being connected to the brush, the brush being disposed on and in contact with the solar panel, the motor being configured to drive the brush to rotate to cause the brush to clean the solar panel.

10. The tractor as defined by claim 1 wherein the solar module comprises a cleaning device, the cleaning device comprising a cleaning fan and a cleaning duct, the cleaning duct having an air outlet directed toward the solar panel, the cleaning fan being configured to create an air flow within the cleaning duct, the air flow being blown toward the solar surface through the cleaning duct air outlet.