CN220895627U

CN220895627U - Thermal management device and electric engineering vehicle

Info

Publication number: CN220895627U
Application number: CN202322577895.2U
Authority: CN
Inventors: 崔义强; 王硕祺; 殷玉先
Original assignee: Huzhou Sany Loader Co ltd
Current assignee: Huzhou Sany Loader Co ltd
Priority date: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-05-03
Anticipated expiration: 2033-09-21

Abstract

The application provides a heat management device and an electric engineering vehicle, and relates to the technical field of electric engineering vehicles, wherein the heat management device comprises a frame body, fans and an air guide structure, the fans are arranged on the frame body, and at least two fans are arranged; the wind guiding structure is used for guiding out wind blown out by the fan, and the wind guiding structure and the fan are arranged one to one. Through setting up wind-guiding structure and fan one to one, can be with the wind-guiding structure derivation that every fan blown out by setting up with this fan alignment to avoid a plurality of fans to blow and interfere the fan exhaust volume reduction and avoid the air-out side air-out loss scheduling problem each other.

Description

Thermal management device and electric engineering vehicle

Technical Field

The application relates to the technical field of electric engineering vehicles, in particular to a thermal management device and an electric engineering vehicle.

Background

With the acceleration of the electric engineering vehicle, electric engineering vehicles have also been developed. The lithium battery is the most main electric quantity source of the current electric engineering vehicle, and the optimal working temperature is 20-40 ℃, so that the lithium battery needs to be cooled by a thermal management device.

Although fans of the heat management device are commonly provided with rectifying blades, the fans are limited by the size of a water cooling unit, the length of the rectifying blades is short, and the wind direction of the air outlet cannot be completely rectified into the axial direction. The fans which are arranged in parallel often turn the same, so that the wind with opposite tangential speeds blown by the fans can generate a larger speed gradient at the junction, two air flows mutually interfere after the hood is blocked, vortex blocking a flow passage is easily induced, the wind quantity is reduced, and the loss of the wind outlet side is increased.

Disclosure of utility model

In view of this, the application provides a thermal management device, which solves the problems of mutual interference of a plurality of wind outlets, reduction of wind quantity and wind outlet loss at the wind outlet side. The application also provides an electric engineering vehicle comprising the thermal management system.

In order to achieve the above purpose, the present application provides the following technical solutions:

A thermal management device, comprising:

A frame body;

The fans are arranged on the frame body and at least two fans are arranged;

The wind guiding structure is used for guiding out wind blown out by the fan, and the wind guiding structure and the fan are arranged one to one.

Optionally, the thermal management device further includes a sealing element, where the sealing element is disposed on an air outlet of the air guiding structure and is in sealing fit with the air outlet grille, so as to guide air guided by the air guiding structure to the air outlet grille.

Optionally, the fan is disposed on at least one wall surface of the frame, and at least one wall surface of the rest wall surfaces of the frame is hollowed out to form the air inlet.

Optionally, the fans are all arranged on one wall surface of the frame body, and the rest wall surfaces of the frame body are all hollowed out.

Optionally, the fan is disposed on one side wall surface of the frame body, and hollowed-out plates are disposed on the other side wall surfaces of the frame body.

Optionally, a top plate beam is arranged in the middle of the top wall surface of the frame body, and a bottom plate beam is arranged on the bottom wall surface of the frame body.

Optionally, the thermal management device includes a water cooling unit disposed in the frame body, and the water cooling unit is connected with the bottom plate beam.

Optionally, the fretwork board is last to have seted up bar hole, bar hole is provided with a plurality ofly, and a plurality of bar hole set up the direction with the roof is parallel.

An electric work vehicle comprising a thermal management device according to any one of the preceding claims.

Optionally, the electric engineering vehicle further comprises a radiator, and the radiator is aligned with the air inlet of the thermal management device.

According to the thermal management device provided by the application, the air guide structure and the fans are arranged one by one, so that the air blown by each fan can be guided out by the air guide structure which is aligned with the fans, the mutual interference of the blowing of the fans is avoided, the problem of the reduction of the air discharge quantity of the fans is avoided, and the problem of the air outlet loss at the air outlet side is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a three-dimensional view of a thermal management device provided in this embodiment;

FIG. 2 is a schematic view of a flow field around a thermal management device with a one-to-one arrangement of air guiding structures and fans;

FIG. 3 is a schematic view of a flow field around a thermal management device without an air guiding structure.

In fig. 1-3:

1-a heat management device, 2-an air outlet grille and 3-a radiator;

11-frame body, 12-fan, 13-wind guiding structure, 14-sealing piece and 15-water cooling unit;

111-top plate beams, 112-bottom plate beams, 113-hollowed-out plates and 151-condensers;

1131-bar shaped holes.

Detailed Description

The application provides a thermal management device. The application also provides an electric engineering vehicle comprising the thermal management device.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 3, an embodiment of the present application provides a thermal management device 1, where the thermal management device 1 may be installed in an electric engineering vehicle, and is used for cooling a to-be-cooled member in the electric engineering vehicle, and optionally cooling a battery in the electric engineering vehicle. The heat management device 1 mainly comprises a frame 11, fans 12 and an air guide structure 13, wherein the fans 12 are arranged on the frame 11, and at least two fans 12 are arranged; the air guiding structure 13 is used for guiding out the air blown out by the fan 12, and the air guiding structure 13 is arranged one-to-one with the fan 12. Specifically, in order to facilitate the guiding of the wind blown out by the fan 12, the preferred wind guiding structure 13 is a long cylindrical structure with openings at both ends, and one of the ends of the wind guiding structure 13 provided with openings surrounds the wind outlet end of the fan 12, so that all the wind blown out by the fan 12 enters the inside of the long cylindrical structure of the wind guiding structure 13, and the wind guiding structure 13 guides the wind to the position where the wind outlet grille 2 is located. In general, the thermal management device 1 is provided with two fans 12 arranged side by side, and the two fans 12 are arranged on the same wall surface of the frame 11, on the basis, two air guiding structures 13 are respectively arranged one to one with the two fans 12, so that each air guiding structure 13 independently guides out the air blown out by each fan 12, the air blown out between the two fans 12 is prevented from forming a vortex, the reduction of the total air volume blown out by the fans 12 is avoided, and the loss of the air outlet side is reduced.

It should be noted that, the thermal management device 1 may be a cooling device, where the thermal management device 1 further includes a water cooling unit 15 (which will be described later), the water cooling unit 15 includes a compressor (not shown in the figure), a condenser 151, a heat exchanger (not shown in the figure), and the like, the water cooling unit 15 is used for cooling a member to be cooled, and a cooling manner is not limited herein, and may be a liquid cooling manner or an air cooling manner, and the air exhausted by the fan 12 through the air guiding structure 13 is hot air. In addition, the thermal management device 1 may be a temperature raising device, where the thermal management device 1 includes a heating unit, and the heating mode is not limited in comparison, and the optional heating unit includes a compressor, a condenser 151, a heat exchanger, and the like, and where the air exhausted by the fan 12 through the air guiding structure 13 is cool air.

It should be noted that, the frame 11 is not limited herein, and the frame 11 may be a bracket structure that only provides mounting and supporting for the fan 12, and the frame 11 may provide a mounting position for the fan 12 and a mounting position for the water cooling unit 15.

It should be noted that, the air guiding structure 13 may be a sheet metal part or an injection molding part. The sheet metal part is heavy, but processing is simple, and the injection molding part is light but needs to be opened, and the cost of small batch use is high. Therefore, when the cantilever of the air guiding structure 13 is longer, the injection molding part is more suitable, but the sheet metal part is more suitable under the condition that the quantity is small enough to pay the die sinking expense.

In addition, the plurality of air guiding structures 13 may be integrated, that is, the plurality of air guiding structures 13 form a whole, and the plurality of integrated air guiding structures 13 and the plurality of fans 12 are arranged one to one, so long as the air blown out by each fan 12 can be independently guided out.

In the thermal management device 1 with the above structure, the air guiding structure 13 and the fans 12 are arranged one by one, so that the air blown out by each fan 12 can be guided out by the air guiding structure 13 aligned with the fan 12, thereby avoiding the mutual interference of the air blowing of the fans 12, avoiding the problem of the reduction of the air discharge quantity of the fans 12 and avoiding the problem of the air outlet loss at the air outlet side.

In some embodiments, the thermal management device 1 further includes a sealing member 14, where the sealing member 14 is disposed on an air outlet of the air guiding structure 13 and is in sealing engagement with the air outlet grille 2, so as to guide the air guided by the air guiding structure 13 to the air outlet grille 2. Specifically, the sealing member 14 is a ring-shaped member, the sealing member 14 includes two annular open ends, one annular open end of the sealing member 14 is connected with one end of the air guiding structure 13 away from the fan 12, and the other annular open end of the sealing member 14 is connected with the air outlet grille 2, so as to realize the sealing connection between the air guiding structure 13 and the air outlet grille 2, so that the air blown by the fan 12 guided out by the air guiding structure 13 is guided to the position of the air outlet grille 2. Because the heat management device 1 is arranged in the electric engineering vehicle hood, although the electric engineering vehicle hood is reserved with the air outlet grille 2 at the air outlet side of the heat management device 1, the ventilation rate of the air outlet grille 2 is limited to be not 100%, and generally 70% or even below, a large amount of hot air which has passed through the condenser 151 is sucked back to the condenser 151 from the fully hollowed unit shell again, and the hot air is continuously circulated, so that the air inlet temperature of the condenser 151 is finally increased, and the problems of increased refrigeration load, increased power consumption and even insufficient refrigeration capacity of the water-cooling unit 15 are finally caused. Further, by providing the seal 14 between the air guide structure 13 and the air outlet grille 2, the total air volume on the air outlet side of the fan 12 is guided out of the position of the air outlet grille 2 of the electric engineering vehicle, thereby suppressing the backflow of hot air.

In some embodiments, the seal 14 is a flexible structure and the air guiding structure 13 is a rigid structure. In particular, the seal 14 is provided in a flexible configuration, and the seal 14 may be, for example, a stick-on sponge or other flexible material. The air guiding structure 13 is provided as a rigid structure, and the air guiding structure 13 may be made of hard materials such as steel, iron or copper, for example. Through setting up seal 14 into flexible construction, can be when the electric engineering vehicle that is provided with above-mentioned thermal management device 1 uses under the relatively poor environment of operating mode, when electric engineering vehicle received jolting or vibrations, the seal 14 of flexible construction can play the effect of buffering decompression, avoids the friction loss between air-out grid 2 and air-out structure 13 to the life of extension air-out structure 13 and air-out grid 2.

The flexible structure in this embodiment is flexible with respect to the rigid structure, and the rigid structure is rigid with respect to the flexible structure.

In some embodiments, the fan 12 is disposed on at least one wall surface of the frame 11, and at least one wall surface of the rest wall surfaces of the frame 11 is hollowed out to form the air inlet. Specifically, the thermal management device 1 is often disposed inside the hood of the electric engineering vehicle, where the wall surface of the frame 11 of the thermal management device 1 is usually closed or has few air intake holes, and the wall surface of the frame 11 only plays a role of supporting the components of the water cooling unit 15. However, the working environment of the construction machine is much dust and soil, and the condenser 151 and other parts of the water cooling unit 15 are easy to be blocked. The relatively airtight housing not only does not function as dust and water, but rather can cause the equipment for cleaning the condenser 151 to be unable to touch the condenser 151, which increases great difficulty in cleaning the condenser 151. At least one of the remaining wall surfaces of the frame 11 is hollowed out, wherein the hollowed out arrangement of the at least one of the remaining wall surfaces of the frame 11 includes the hollowed out arrangement of one of the remaining wall surfaces and the hollowed out arrangement of a plurality of the remaining wall surfaces. All the other wall surfaces are preferably hollowed out, so that the air inlet quantity is increased, only the framework needing to fix parts is reserved, and the cleaning convenience of the condenser 151 is ensured on the premise of meeting the modular transportation and installation.

The remaining wall surface of the housing 11 is a wall surface of the housing 11 excluding the fan 12.

It should be noted that, the hollow structure may be that a plate-shaped member is disposed on the rest of the wall surface of the frame 11, and a hole is formed on the plate-shaped member to form the hollow structure; the hollow structure may be a hollow structure formed by arranging no or part of plate-shaped members on the rest of the wall surfaces of the frame 11, and of course, when part of plate-shaped members are arranged on the wall surfaces, holes may be formed in the plate-shaped members for further improving the hollow effect.

Further, in some embodiments, the fans 12 are all disposed on one wall surface of the frame 11, and the rest wall surfaces of the frame 11 are all hollow. Specifically, on the basis of the above embodiment, further, a plurality of fans 12 are uniformly arranged on one wall surface of the frame 11, and then the rest wall surfaces of the frame 11 are all hollowed out, so that the rest wall surfaces of the frame 11 except for the fan 12 are all air inlet ends, so that the air inlet area of wind can be greatly increased, and the cooling efficiency of a piece to be cooled is improved. In addition, all the wall surfaces except the fan 12 of the frame 11 are hollowed out, and an operator can maintain or clean dust on the water cooling unit 15 in the frame 11 conveniently through the rest hollowed-out positions.

In some embodiments, the fan 12 is disposed on one side wall surface of the frame 11, and the rest side wall surfaces of the frame 11 are provided with hollowed-out boards 113. Generally, the frame 11 is a hexahedral frame 11, and has four sides, a bottom and a top, where other devices are mounted on the bottom and the top, and the air outlet grille 2 is generally located on the side where the thermal management device 1 is disposed. Here, the fan 12 is disposed on one side wall surface of the frame 11, so that the air blown by the thermal management device 1 is conveniently discharged from the air outlet grille 2, and the hollow plates 113 are disposed on the rest side wall surfaces of the frame 11, that is to say, the air inlet ends are formed on the rest side wall surfaces of the frame 11, so that the air inlet efficiency is improved.

Further, in some embodiments, a top plate beam 111 is provided in the middle of the top wall surface of the frame 11, and a bottom plate beam 112 is provided on the bottom wall surface of the frame 11. Specifically, when an expansion tank or other components need to be mounted on the top of the frame 11, a top plate beam 111 is disposed in the middle of the top wall surface of the frame 11, and even if other components are mounted on the top of the frame 11, the frame 11 on the top wall surface and the top plate beam 111 on the middle of the top wall surface form a frame structure, and at this time, a hollow structure is also formed between the frame 11 and the top plate beam 111 on the top wall surface side, so that gas is convenient to enter the water cooling unit 15 in the frame 11 from the top of the frame 11; the provision of roof rail 111 may be omitted when there is no need to install an expansion tank or other components on top of the frame 11. Correspondingly, a bottom plate beam 112 is arranged on the bottom wall surface of the frame body 11, and the bottom plate is hollowed out in a large area, so that only the bottom plate beam 112 is reserved. This facilitates the water cooling unit 15 to intake air from the bottom surface and avoids the dust accumulation on the bottom plate. Meanwhile, sundries are prevented from falling into the water cooling unit 15 from the hollow part of the top plate during equipment installation, and the sundries are not taken out well. A plurality of mounting supports for the water cooling units 15 are reserved on the bottom plate beam 112 for fixing the water cooling units 15. The bottom plate beam 112 supports the whole water cooling unit 15, and the parts such as the compressor, the condenser 151, the heat exchanger and the like are fixed through the brackets paved on the bottom plate beam 112.

In some embodiments, the thermal management device 1 includes a water cooling unit 15 disposed inside the frame 11, where the water cooling unit 15 is connected to the floor beam 112. Specifically, the water cooling unit 15 is disposed inside the frame 11, the water cooling unit 15 is used for cooling a to-be-cooled member in the electric engineering vehicle, and the fan 12 disposed on the wall surface of the frame 11 is connected with the water cooling unit 15, and the fan 12 is used for discharging hot air cooled by the water cooling unit 15 to the outside of the thermal management device 1. The water-cooling unit 15 includes a compressor, a condenser 151, a heat exchanger, and the like, and the floor beam 112 is provided with mounting positions for mounting the compressor, the condenser 151, the heat exchanger, and the like, so that the water-cooling unit 15 is mounted. The water cooling unit 15 is arranged inside the frame 11, convenience of connection is guaranteed by being close to the fan 12, the frame structure of the frame 11 plays a role in protecting the water cooling unit 15, the bottom plate beam 112 for installing the water cooling unit 15 is arranged on the bottom wall surface of the frame 11, convenience of installing the water cooling unit 15 is improved, and the overall structure of the thermal management device 1 is more stable.

In some embodiments, the hollow plate 113 is provided with a plurality of strip-shaped holes 1131, and the strip-shaped holes 1131 are arranged in parallel to the top wall surface. Specifically, a plurality of strip-shaped holes 1131 are formed in the hollow plate 113 to form a strip-shaped hollow structure, the strip-shaped holes 1131 are used for forming air inlet ends of air, and further, the strip-shaped holes 1131 are arranged in parallel, so that when air enters the thermal management device 1 from the strip-shaped holes 1131, the air inlet directions of the air entering the thermal management device 1 from different strip-shaped holes 1131 are the same, interference caused by different wind directions when the air enters the thermal management device 1 is avoided, and the air inlet quantity of the air inlet ends is increased.

It should be noted that, the shape and structure of the strip-shaped holes 1131 are not limited, alternatively, the widths of the strip-shaped holes 1131 located on the same side wall surface and different side wall surfaces are different, multiple groups of strip-shaped holes 1131 are provided on the side wall surface, and the widths of the strip-shaped holes 1131 decrease from one side of the bottom wall surface to one side of the top wall surface. So set up, can promote the intake that is close to diapire face position to promote the cooling effect to the bottom.

It should be further noted that the strip-shaped holes 1131 formed on the hollow plate 113 on the same side wall surface may be arranged in other manners, for example: the plurality of strip-shaped holes 1131 are arranged in a direction perpendicular to the top wall surface, the plurality of strip-shaped holes 1131 are arranged in a direction inclined by 45 ° with respect to the top wall surface, and so on. The arrangement directions of the plurality of strip-shaped holes 1131 on the same wall surface are required to be the same, so as to improve the air inlet quantity of the air from the strip-shaped holes 1131.

In addition, the side wall surface can be hollowed out in a large area, that is, only the frame structure is arranged on the side wall surface of the frame body 11, so that the hollowed-out area is increased, and the air inlet quantity is increased. Accordingly, a partial side member (not shown) may be provided on the side wall surface of the frame 11 to provide a mounting position for other components on the side wall surface of the frame 11.

An electric working vehicle comprising the above-described thermal management device 1. Since the electric engineering vehicle includes the thermal management device 1, the beneficial effects of the electric engineering vehicle caused by the thermal management device 1 can be seen from the above, and will not be described herein.

The electric engineering vehicle refers to a vehicle using electricity as an energy source, and specifically includes an electric vehicle using electricity as a main energy source, or a hybrid vehicle using electricity and oil as energy sources, and in this case, the thermal management device 1 is used for cooling a battery of the electric engineering vehicle. By use type classification, electric work vehicles include both work machine type large vehicles, such as: excavator, forklift, fork truck, crane, concrete pump truck, concrete mixer truck, crane, etc.

In some embodiments, the electric engineering vehicle further comprises a radiator 3, and the radiator 3 is aligned with the air inlet of the thermal management device 1. Specifically, when the electric engineering vehicle further includes a radiator 3 for radiating heat from other devices, the thermal management device 1 is arranged opposite to the radiator 3, and when the thermal management device 1 is a cooling device, the air exhausted by the radiator 3 can be cooled; when the thermal management device 1 is a temperature raising device, the heat of the gas discharged from the radiator 3 can be recovered and utilized. In addition, since the wall surfaces except the fans 12 in the frame 11 of the thermal management device 1 are hollowed out, when part of the wall surfaces of the thermal management device 1 are shielded by other components in a large area, the non-shielded wall surfaces can still ensure effective entry of gas, and can still ensure good air inlet environment of the thermal management device 1.

It should be noted that, fig. 2 is a schematic view of a flow field around the thermal management device 1 in the case that the air guiding structure 13 and the fan 12 are arranged one to one, and the solution in fig. 2 is to provide a sealing member 14 between the air guiding structure 13 and the air outlet grille 2; fig. 3 is a schematic view of the flow field around the thermal management device 1 without the wind guiding structure 13. The flow field without the wind guiding structure 13, the area with higher wind speed at the outlet of the fan 12 is close to the top of the fan 12, the high-speed fluid at the adjacent side of the two fans 12 is blocked by the non-perforated part of the air grid 2, and is forced to flow back towards the middle of the fan 12 due to interference, the flow back is opposite to the main flow direction of the fan 12, a huge speed gradient is generated, the two opposite fluid induces vortexes while the aerodynamic loss is caused, and the two vortexes block the flow passage of nearly 50%, so that the air output is reduced. Meanwhile, the part which is not perforated by the receiving grille 2 is blocked, negative pressure is generated at the hollowed-out shell, secondary flow with reverse flow trend is generated at the outer sides of the two fans 12, and part of fluid in the secondary flow is sucked back to the unit again to participate in new circulation, so that obvious hot air backflow is formed, and the load of the water cooling unit 15 is increased. Therefore, it is apparent from the figure that, after the air guide structure 13 and the seal 14 are provided, the backflow of the air blown out by the fan 12 can be avoided, and the effect of guiding the air guided out of the air outlet grill 2 by the fan 12 of the thermal management device 1 can be significantly improved.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are used for more clearly describing the technical solutions, and are not intended to limit the scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims

1. A thermal management device, comprising:

A frame body;

The fans are arranged on the frame body and at least two fans are arranged;

2. The thermal management device of claim 1, further comprising a seal disposed on an air outlet of the air directing structure and in sealing engagement with an air outlet grille to direct air directed out of the air directing structure toward the air outlet grille.

3. The thermal management device of claim 2, wherein the seal is a flexible structure and the air guiding structure is a rigid structure.

4. The thermal management apparatus of claim 1, wherein the fan is disposed on at least one wall of the frame, and at least one of the remaining walls of the frame is hollowed out to form an air inlet.

5. The thermal management apparatus of claim 4, wherein the fans are disposed on one wall of the frame, and the remaining walls of the frame are hollow.

6. The thermal management apparatus of claim 5, wherein the fan is disposed on one side wall surface of the frame, and the rest side wall surfaces of the frame are provided with hollowed-out boards.

7. The thermal management apparatus of claim 6, wherein a top plate beam is provided in a middle portion of a top wall surface of the frame body, and a bottom plate beam is provided on a bottom wall surface of the frame body.

8. The thermal management apparatus of claim 7, comprising a water chiller disposed within the frame, the water chiller being coupled to the floor beam.

9. The thermal management apparatus of claim 7, wherein the hollow plate is provided with a plurality of strip-shaped holes, and the strip-shaped holes are arranged in a direction parallel to the top wall surface.

10. An electric engineering vehicle, characterized by comprising a radiator and a thermal management device according to any one of claims 1-9, wherein the radiator is arranged in alignment with an air inlet of the thermal management device.