Battery dustproof and heat dissipation structure and engineering equipment

Abstract

The utility model relates to the field of engineering equipment discloses a battery dustproof heat radiation structure and engineering equipment, a battery dustproof heat radiation structure includes battery cabin and booster device, battery cabin is used to accommodate battery package and has air inlet and exhaust port, the position of air inlet is lower than the position of exhaust port, and the position of air inlet is not higher than the top surface of battery package, the booster device is connected with air inlet through pipeline, adjusts the working flow of booster device, and booster device transports high pressure gas to battery cabin through air inlet, and high pressure gas flows through the surface of battery package and is discharged from exhaust port, makes the air pressure inside battery cabin greater than the air pressure outside battery cabin, and dust particles in external environment cannot overcome the resistance of reverse airflow under the action of air pressure difference and enter the inside of battery cabin actively, realizes efficient dustproof effect, and gas is forced to flow through the surface of battery package from bottom to top under the driving of positive pressure and carries away heat, is finally discharged from high position exhaust port efficiently, realizes forced convection heat dissipation.

Description

Technical Field

[0001] This utility model belongs to the field of engineering equipment technology, specifically relating to a battery dustproof and heat dissipation structure and engineering equipment. Background Technology

[0002] With increasingly stringent global requirements for energy conservation and emission reduction, the electrification and hybridization of mining excavators have become important development trends. To meet the heat dissipation needs of lithium battery packs during operation and ensure their temperature remains within a safe and efficient operating range, the lithium battery compartment must be designed with a ventilation structure. This typically manifests as necessary ventilation holes in the covers, and the unavoidable gaps between the covers due to manufacturing, assembly, and maintenance requirements. Simultaneously, the lithium battery wiring harnesses and conduits also need to connect to external systems through openings in the covers. Therefore, existing lithium battery compartment designs are not completely sealed, but rather allow airflow for passive or auxiliary heat dissipation.

[0003] However, mining excavators operate in extremely harsh environments with high dust levels for extended periods. A core flaw in existing lithium battery compartment designs lies in their inability to effectively balance heat dissipation and ventilation with a clean internal environment. The ventilation holes, openings, and gaps between boards necessary for heat dissipation and wiring become the primary channels for external dust to enter the compartment. This infiltrated dust continuously accumulates on the battery pack surface, module gaps, wiring harness connectors, and sensors, affecting battery performance. Therefore, existing technologies struggle to balance heat dissipation and dust prevention requirements in mining environments. Utility Model Content

[0004] In view of at least one of the above-mentioned defects or deficiencies in the prior art, the present invention provides a battery dustproof and heat dissipation structure and engineering equipment, which simultaneously achieves heat dissipation and dustproofing of lithium batteries.

[0005] To achieve the above objectives, this utility model provides a battery dustproof and heat dissipation structure, comprising:

[0006] A battery compartment for accommodating a battery pack and having an air inlet and an exhaust outlet, wherein the air inlet is positioned below the position of the exhaust outlet and is not positioned above the top surface of the battery pack;

[0007] A pressurizing device is connected to the air inlet. The pressurizing device delivers high-pressure gas into the battery compartment through the air inlet. The high-pressure gas flows over the surface of the battery pack and is discharged from the exhaust port, making the air pressure inside the battery compartment greater than the air pressure outside the battery compartment.

[0008] In some embodiments, the air inlet and the exhaust outlet are located on opposite sides of the battery compartment, forming a channel for high-pressure gas to flow through, the channel accommodating the battery pack.

[0009] In some embodiments, the air inlet and the exhaust outlet are arranged opposite to each other along the length of the battery pack, and there are multiple air inlets, which are spaced apart along the width of the battery pack.

[0010] In some embodiments, a battery frame is provided at the bottom of the battery compartment for connecting the battery pack;

[0011] The battery frame has a hollow section, which is provided corresponding to the air inlet and the exhaust outlet, so as to allow the high-pressure gas to flow through the bottom surface of the battery pack.

[0012] In some embodiments, the pressurization device includes a pre-filter and a booster pump, the booster pump being connected between the pre-filter and the air inlet, the pre-filter being used to deliver filtered gas to the booster pump, and the booster pump being used to pressurize the clean gas.

[0013] In some embodiments, the exhaust port is fitted with a filter screen.

[0014] In some embodiments, the battery dustproof and heat dissipation structure further includes a detection component. The exhaust port is connected to an exhaust pipe, which is located outside the battery compartment. The detection component is located inside the exhaust pipe and is used to detect the flow rate or air pressure of the exhaust port.

[0015] In some embodiments, the battery dustproof and heat dissipation structure further includes a reminder component, which is electrically connected to the detection component and is used to provide a reminder when the value detected by the detection component is less than a predetermined value.

[0016] In some embodiments, the battery compartment is formed by connecting multiple cover plates, and a sealing strip is provided at the joint of the multiple cover plates.

[0017] The second aspect of this utility model provides engineering equipment, including the battery dustproof and heat dissipation structure described in any one of the above claims.

[0018] Through the above technical solution, the pressurization device continuously pumps high-pressure gas into the battery compartment through the air inlet, creating and maintaining a positive pressure environment inside the compartment. Under this positive pressure, the high-pressure gas inside the compartment tends to dissipate towards the low-pressure area (external environment). The airflow direction at any gap in the compartment is from the inside to the outside. Therefore, dust particles in the external environment cannot overcome the reverse airflow resistance and actively enter the battery compartment under the action of air pressure difference, achieving a highly efficient dust-blocking effect and significantly improving the dustproof performance of the battery system. The design of the air inlet being lower than the top surface of the battery pack and lower than the exhaust port ensures that the high-pressure cooling input from the pressurization device... Gas enters the battery compartment from the bottom or lower position. After entering, the high-pressure gas flows naturally upward along the thermal convection path (hot air rises) under positive pressure. This design ensures that the airflow is forced to flow through and closely adhere to the outer surface of the battery pack, maximizing the contact area between the gas and the battery pack surface. Under positive pressure, the gas is forced to flow upward through the battery pack surface to carry away heat and is finally efficiently discharged from the high-level exhaust port, achieving forced convection heat dissipation. The high-pressure characteristics provided by the pressurization device work synergistically to have the dual core functions of establishing dustproof positive pressure and driving efficient heat dissipation airflow, so that dustproofing and heat dissipation are efficiently integrated in the structure.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0021] Figure 1 This is a schematic diagram of the battery dustproof and heat dissipation structure in this utility model;

[0022] Explanation of reference numerals in the attached figures

[0023] Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0026] like Figure 1As shown, the first aspect of this utility model provides a battery dustproof and heat dissipation structure, including a battery compartment 10 and a pressurizing device 20. The battery compartment 10 is used to accommodate a battery pack 30 and has an air inlet 11 and an exhaust outlet 12. The position of the air inlet 11 is lower than the position of the exhaust outlet 12, and the position of the air inlet 11 is not higher than the top surface of the battery pack 30. The pressurizing device 20 is connected to the air inlet 11 through a pipe. After adjusting the working flow rate of the pressurizing device 20, the pressurizing device 20 delivers high-pressure gas into the battery compartment 10 through the air inlet 11. The high-pressure gas flows through the surface of the battery pack 30 and is discharged from the exhaust outlet 12, so that the air pressure inside the battery compartment 10 is greater than the air pressure outside the battery compartment 10.

[0027] Through the above technical solution, the pressurization device 20 continuously pumps high-pressure gas into the battery compartment 10 through the air inlet 11, creating and maintaining a positive pressure environment inside the compartment. Under this positive pressure state, the high-pressure gas inside the compartment tends to dissipate towards the low-pressure area (external environment). The airflow direction at any gap in the compartment is from the inside to the outside. Therefore, dust particles in the external environment cannot overcome the reverse airflow resistance and actively enter the battery compartment 10 under the action of air pressure difference, achieving a highly efficient dust-blocking effect and significantly improving the dustproof performance of the battery system. The design of the air inlet 11, which is lower than the top surface of the battery pack 30 and lower than the exhaust port 12, ensures that the high pressure input by the pressurization device 20... Cooling gas enters the battery compartment 10 from the bottom or lower position. After the high-pressure gas enters, it naturally flows from bottom to top along the thermal convection path (hot air rises) under positive pressure. This design ensures that the airflow is forced to flow through and closely adhere to the outer surface of the battery pack 30, maximizing the contact area between the gas and the surface of the battery pack 30. Under positive pressure, the gas is forced to flow from bottom to top across the surface of the battery pack 30, carrying away heat, and finally being efficiently discharged from the high-level exhaust port 12, achieving forced convection heat dissipation. The high-pressure characteristics provided by the pressurization device 20 work synergistically to have the dual core functions of establishing dustproof positive pressure and driving efficient heat dissipation airflow, so that dustproofing and heat dissipation are efficiently integrated in the structure.

[0028] In some embodiments, the air inlet 11 and the exhaust outlet 12 are located on opposite sides of the battery compartment 10, forming a channel for high-pressure gas to flow through. This channel accommodates the battery pack 30, meaning the battery pack 30 is positioned between the air inlet 11 and the exhaust outlet 12, creating a through-flow cooling airflow channel on both sides of the battery pack 30. High-pressure gas supplied by the pressurization device 20 is injected from one side of the air inlet 11 and forced to traverse the surface of the battery pack 30 under positive pressure, forming a directional airflow that adheres to the wall. After fully covering the maximum heat dissipation area of ​​the battery pack 30, the gas is discharged from the exhaust outlet 12 on the opposite side. This structure maintains positive pressure inside the battery compartment 10, effectively preventing external dust intrusion. Furthermore, the lateral through-flow avoids heat dissipation dead zones, utilizing the kinetic energy of the high-pressure gas to achieve forced uniform heat exchange across the entire side of the battery pack 30, significantly improving heat dissipation efficiency, and the layout is compact and reasonable. The high-pressure output of the pressurization device 20 simultaneously meets the dual requirements of dustproof sealing and efficient lateral airflow.

[0029] Specifically, the air inlet 11 can be positioned at less than half the height of the battery compartment 10. This low position ensures that the air inlet 11 is always near the lower half of the heat dissipation surface of the battery pack 30, allowing the high-pressure cold airflow to flow naturally upward through the main heat source area of ​​the battery pack 30, fully utilizing the thermal buoyancy effect to enhance the upward speed and coverage uniformity of the airflow. Secondly, the longitudinal pressure difference significantly increases the effective driving force of the airflow path, forcing the gas to flow more closely to the surface of the battery pack 30, maximizing heat exchange efficiency. At the same time, the high-pressure zone formed by the low-position air inlet can strengthen the overall positive pressure stability inside the compartment (internal air pressure > atmospheric pressure), weakening the intrusion force of dust. This half-position height is optimized by fluid dynamics to achieve the optimal balance between the heat dissipation flow field and the dustproof pressure barrier under spatial constraints.

[0030] Furthermore, the exhaust port 12 can be positioned at a point greater than half the height of the battery compartment 10. This high-positioned exhaust port 12 is located in the natural hot air accumulation zone at the top of the battery pack 30, directly and efficiently discharging the hottest airflow and preventing hot air from stagnating at the top of the compartment and causing localized overheating. Together with the air inlet 11, it forms a forced convection channel penetrating the battery pack 30, ensuring that gas flows through all heat dissipation surfaces of the battery pack 30 before being concentrated and discharged from a high position, eliminating heat dissipation dead zones. This quantitative high-position design, through dual optimization of thermodynamics and fluid dynamics, makes the exhaust port 12 a directional terminal of the heat dissipation path and a stable pressure relief point for the positive pressure system, maximizing heat dissipation efficiency while ensuring dustproof performance.

[0031] In some embodiments, the air inlets 11 and exhaust outlets 12 are arranged opposite to each other along the length of the battery pack 30, and there are multiple air inlets 11 spaced apart along the width of the battery pack 30. There is only one exhaust outlet 12, which serves as the sole pressure relief terminal, facilitating precise control of the overall positive pressure level within the compartment by the pressurization device. Multiple air inlets ensure that high-pressure gas is injected more evenly into the compartment along the width of the battery pack 30, effectively covering a larger heat dissipation area and eliminating potential localized heat dissipation blind spots that might result from a single air inlet 11, thus making the surface temperature distribution of the battery pack 30 more even. Secondly, the spaced-apart air inlets 11 form parallel flow channels, reducing airflow path resistance. The pressurization device 20 can more efficiently deliver high-pressure gas into the battery compartment 10, which not only makes it easier to maintain a stable positive pressure state within the compartment and enhances the ability to resist the intrusion of external dust due to localized pressure drops, but also increases the total air volume per unit time. It should be noted that the exhaust port 12 can also be set to multiple, and spaced apart in the width direction of the battery pack 30. Multiple outlets for depressurization make the air pressure field inside the cabin more uniform, eliminate low-pressure areas in corners, and further reduce the possibility of dust intruding from gaps.

[0032] In some embodiments, a battery frame 13 is provided at the bottom of the battery compartment 10, which is used to connect the battery pack 30. The battery frame 13 has a hollow section, which is provided corresponding to the air inlet 11 and the exhaust port 12, so as to allow high-pressure gas to flow through the bottom surface of the battery pack 30. While stably supporting the battery pack 30, the battery frame 13 also forms a bottom flow channel for high-pressure airflow through its corresponding hollow section. After the high-pressure gas input by the pressurization device 20 enters the compartment through the air inlet 11, part of the airflow passes directly through the hollow section of the battery frame 13 and is forced to flow through the bottom surface of the battery pack 30 for heat exchange. This eliminates the heat dissipation blind spot at the bottom of the battery pack 30 in the traditional structure and achieves full surface coverage heat dissipation of the battery pack 30, including the bottom surface. After the high-pressure gas flows through the bottom surface, it continues to flow upward in coordination with other airflows and is finally discharged efficiently through the exhaust port 12, which significantly improves the overall heat dissipation efficiency and temperature uniformity, while maintaining the overall structural strength of the frame.

[0033] In some embodiments, the pressurization device 20 includes a pre-filter 21 and a booster pump 22. The booster pump 22 is connected between the pre-filter 21 and the air inlet 11. The pre-filter 21 is used to deliver filtered gas to the booster pump 22, which pressurizes the clean gas. The pre-filter 21 pre-filters the intake gas, effectively trapping particulate pollutants in the outside air and ensuring the cleanliness of the gas source delivered to the booster pump 22. Subsequently, the booster pump 22 pressurizes the clean gas to form high-pressure gas, which is then input into the battery compartment 10. The booster pump 22 pressurizes the filtered gas to ensure that the gas entering the battery compartment 10 simultaneously meets the requirements of high cleanliness and high pressure, thus ensuring the cleanliness of the internal environment of the battery compartment 10 from the source.

[0034] In some embodiments, the exhaust port 12 is equipped with a filter screen 121. Under special operating conditions (such as when the pressurization device 20 is temporarily shut down, causing a brief decrease in the positive pressure inside the chamber), the filter screen 121 can effectively prevent external dust from seeping into the chamber through the exhaust port 12. Specifically, the filter screen 121 can be installed inside or outside the battery compartment 10, and this utility model does not impose any specific limitations.

[0035] In some embodiments, the battery dustproof and heat dissipation structure further includes a detection component 14. The exhaust port 12 is connected to an exhaust pipe 122, which is located outside the battery compartment 10. The detection component 14 is located inside the exhaust pipe 122 and is used to detect the flow rate or air pressure of the exhaust port 12. It should be noted that the detection component 14 can be a flow meter, a differential pressure sensor, or other devices capable of detecting exhaust flow rate and air pressure; this invention does not impose specific limitations. By integrating the detection component 14 into the exhaust pipe outside the battery compartment 10, the exhaust flow rate or air pressure parameters of the exhaust port 12 can be directly monitored. Real-time feedback on the airflow circulation status and positive pressure stability within the compartment is possible. The exhaust flow rate data directly reflects the actual heat dissipation efficiency and flow capacity of the high-pressure gas after flowing through the battery pack 30. An abnormal decrease in flow rate can provide an early warning. The filter 121, as a critical filtration barrier, directly affects the value of the detection data. If the exhaust flow rate or air pressure parameters of the exhaust port 12 are abnormal, it indicates that the filter 121 is clogged, requiring timely cleaning or replacement.

[0036] In some embodiments, the battery dustproof and heat dissipation structure also includes a reminder component, which is electrically connected to the detection component 14 and is used to provide a reminder when the value detected by the detection component 14 is less than a predetermined value. The reminder component can be an indicator light, a buzzer, a display screen, or other device with a reminder function; this utility model does not impose specific limitations. A detected value lower than the predetermined value is a clear signal that the filter 121 is clogged. The exhaust flow rate when the battery compartment 10 is clean is denoted as Q. If the detected exhaust flow rate is less than Q for an extended period, it indicates that the battery compartment 10 is severely contaminated and requires cleaning of the battery compartment 10 and the filter 121 at the exhaust port 12. When the exhaust flow rate or air pressure value obtained by the detection component 14 is lower than the predetermined value, the reminder component immediately triggers an audible and visual alarm, a signal alarm, or a remote alarm to achieve active protection. The air pressure value at the exhaust port 12 is linked to indicate the pressure level inside the battery compartment 10. When the detected value is lower than a set threshold, it indicates that the pressurization system has failed to maintain an effective dustproof positive pressure, triggering a dust intrusion risk alarm. The low air pressure warning accurately indicates the risk of failure in the positive pressure environment of the battery compartment 10 (internal air pressure ≤ atmospheric pressure). At this time, dust may enter through gaps, reminding components to respond immediately in the early stages of dustproof function degradation. On the other hand, the low flow rate alarm directly reflects obstructed airflow circulation or reduced pressure, preventing the battery pack 30 from causing safety risks due to continuous overheating. This structure upgrades passive monitoring to a timely intervention mechanism through real-time data threshold judgment and active alarm, significantly improving the system's dustproof reliability and thermal runaway prevention capabilities, and providing maintenance personnel with precise troubleshooting guidance to locate anomalies, thus optimizing maintenance timeliness.

[0037] In some embodiments, the battery compartment 10 is composed of multiple cover plates 10a connected together, with sealing strips provided at the joints of the cover plates 10a. The sealing strips at the joints fill the gaps between the plates, forming a continuous physical barrier layer. This ensures that when the pressurization device 20 establishes a positive pressure environment inside the compartment (internal air pressure > atmospheric pressure), high-pressure gas will not leak abnormally from the joint gaps, maintaining pressure stability and airflow directionality. Simultaneously, it completely prevents external dust from intruding into the compartment through the gaps between the plates, significantly improving the overall dustproof level. Wiring holes or pipe holes can be provided on the cover plates 10a, and sponge can be filled between the pipes to keep the lithium battery compartment 10 as sealed as possible, thus maintaining a stable positive pressure in the battery compartment 10.

[0038] It should be noted that the battery dustproof and heat dissipation structure provided by this utility model is applicable to various types of batteries, including but not limited to lithium batteries, aluminum batteries, and other battery types.

[0039] The second aspect of this utility model provides engineering equipment, including the aforementioned battery dustproof and heat dissipation structure. Specifically, the engineering equipment can be a mining excavator. The battery dustproof and heat dissipation structure provided by this utility model is suitable for the harsh working environment of mining excavators (such as high dust environments), and can avoid the negative impact of the working environment on the lithium battery pack 30, such as dust covering the battery surface leading to reduced battery heat dissipation efficiency, affecting the insulation performance of the battery pack 30, or affecting the acquisition accuracy of the battery sensor, etc.

[0040] It should be noted that, in this utility model, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the directions indicated by the accompanying drawings.

[0041] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A battery dustproof and heat dissipation structure, characterized in that, The battery dustproof and heat dissipation structure includes: The battery compartment (10) is used to accommodate the battery pack (30) and has an air inlet (11) and an exhaust outlet (12), wherein the air inlet (11) is positioned below the position of the exhaust outlet (12) and the position of the air inlet (11) is not higher than the top surface of the battery pack (30); A booster device (20) is connected to the air inlet (11). The booster device (20) delivers high-pressure gas into the battery compartment (10) through the air inlet (11). The high-pressure gas flows over the surface of the battery pack (30) and is discharged from the exhaust port (12), making the air pressure inside the battery compartment (10) greater than the air pressure outside the battery compartment (10).

2. The battery dustproof and heat dissipation structure according to claim 1, characterized in that, The air inlet (11) and the exhaust outlet (12) are located on opposite sides of the battery compartment (10), and a channel for high-pressure gas to flow through is formed between the air inlet (11) and the exhaust outlet (12), and the channel accommodates the battery pack (30).

3. The battery dustproof and heat dissipation structure according to claim 2, characterized in that, The air inlet (11) and the exhaust outlet (12) are arranged opposite to each other along the length direction of the battery pack (30). There are multiple air inlets (11), and the multiple air inlets (11) are spaced apart along the width direction of the battery pack (30).

4. The battery dustproof and heat dissipation structure according to any one of claims 1 to 3, characterized in that, The bottom of the battery compartment (10) is provided with a battery frame (13), which is used to connect the battery pack (30). The battery frame (13) is provided with a hollow part, which is provided corresponding to the air inlet (11) and the exhaust port (12) to allow the high-pressure gas to flow through the bottom surface of the battery pack (30).

5. The battery dustproof and heat dissipation structure according to any one of claims 1 to 3, characterized in that, The booster device (20) includes a pre-filter (21) and a booster pump (22). The booster pump (22) is connected between the pre-filter (21) and the air inlet (11). The pre-filter (21) is used to deliver the filtered gas to the booster pump (22), and the booster pump (22) is used to boost the clean gas.

6. The battery dustproof and heat dissipation structure according to any one of claims 1 to 3, characterized in that, The exhaust port (12) is equipped with a filter screen (121).

7. The battery dustproof and heat dissipation structure according to claim 6, characterized in that, The battery dustproof and heat dissipation structure also includes a detection component (14). The exhaust port (12) is connected to an exhaust pipe (122). The exhaust pipe (122) is located outside the battery compartment (10). The detection component (14) is located inside the exhaust pipe (122) and is used to detect the flow rate or air pressure of the exhaust port (12).

8. The battery dustproof and heat dissipation structure according to claim 7, characterized in that, The battery dustproof and heat dissipation structure also includes a reminder component, which is electrically connected to the detection component (14) and is used to provide a reminder when the value detected by the detection component (14) is less than a predetermined value.

9. The battery dustproof and heat dissipation structure according to any one of claims 1 to 3, characterized in that, The battery compartment (10) is composed of multiple cover plates (10a) connected together, and a sealing strip is provided at the connection of the multiple cover plates (10a).

10. An engineering device, characterized in that, Includes the battery dustproof and heat dissipation structure as described in any one of claims 1 to 9.

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