A protection device of an electric drive system of a whole type tank holding vehicle and a tank holding vehicle

Abstract

The utility model relates to a kind of protector of the electric drive system of integrated tank holding car and tank holding car, to solve the problem that electric drive system is vulnerable under high temperature, heavy load and dust environment of metallurgical field;The protector is composed of three-stage damping structure of steel plate spring, straight column type shock pad, rubber shock pad and polyurethane shock pad, realize full-spectrum absorption to low frequency, intermediate frequency and high frequency vibration, keep the levelness of battery module within ±2 °;The thickness of the protective steel plate greater than 2mm is set on the outside of battery module frame, and 30~50mm ceramic fiber heat insulation layer is additionally provided on the inside of sun canopy, to block heat radiation and dust invasion;Metal support fixes cooling pipeline and electrical harness, cooling pipeline is covered with refractory sleeve, and electrical harness is provided with corrugated pipe and coated with fireproof coating;Battery module frame, protective steel plate and metal support are modular structure, convenient for quick disassembly and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical tank clamping vehicles, specifically relating to a protective device for the electric drive system of an integrated tank clamping vehicle and the tank clamping vehicle itself. Background Technology

[0002] Metallurgical ladle trucks, as the main transportation equipment for high-temperature materials such as steel slag and iron slag in the metallurgical industry, operate under extreme environments of high temperature, heavy load, and strong impact for extended periods. With the metallurgical industry moving towards green, low-carbon, and electrified development, integrated electric ladle trucks are gradually replacing traditional fuel-powered ladle trucks. However, core components of the electric drive system, such as battery packs, motors, and electrical control systems, face severe challenges in actual working conditions: On the one hand, the metallurgical site experiences significant high-temperature heat radiation and slag splashes, which can easily cause battery thermal runaway or degradation of the insulation performance of electrical components; on the other hand, the strong vibrations and impacts generated when the ladle truck is fully loaded accelerate fatigue damage to components such as battery modules and controllers; furthermore, metal dust and high-temperature fumes intruding into the control compartment can easily cause short circuits, blockage of heat dissipation channels, and premature failure of components. These problems severely restrict the reliable operation and widespread application of electric ladle trucks under complex metallurgical conditions.

[0003] While existing technologies attempt to provide some protection through single-layer insulation panels, foundation damping pads, or simple sealing, they have the following shortcomings:

[0004] The protective measures are scattered and lack a systematic design, making it impossible to simultaneously meet multiple needs such as heat insulation, shock resistance, and dust prevention;

[0005] Vibration damping designs are mostly single-stage rubber pads, which cannot cover the full spectrum of low, medium and high frequency vibrations, and can easily lead to loosening of battery modules or shortened lifespan.

[0006] Insufficient insulation and protective layer thickness still poses a risk of heat penetration in the high-temperature steel slag hot-wrapping environment;

[0007] Inadequate dust sealing measures result in the electrical system being exposed to metal dust for extended periods, leading to frequent maintenance and low reliability. Poor overall protection and vehicle structure compatibility further increase maintenance difficulty and subsequent operating costs. Utility Model Content

[0008] The purpose of this utility model is to solve the problem that the battery pack and electrical system of the integrated tank-holding vehicle are susceptible to safety hazards caused by high temperature, vibration, dust and other factors in complex metallurgical field conditions. It provides a multi-protection structure to ensure the stable operation of the battery and electrical system in harsh environments.

[0009] To address the shortcomings of existing technologies, this utility model proposes a multi-protection device for an integrated tank truck electric drive system. Through an innovative combination of a three-stage shock absorption structure and a triple thermal insulation system, it achieves safety protection for the battery pack, motor, and electrical system under extreme conditions such as high temperature, vibration, and dust. This device effectively reduces the failure rate of the electric drive system, improves equipment stability and service life, and reduces production losses caused by maintenance downtime. Furthermore, compared to traditional fuel-powered tank trucks, this solution can reduce carbon emissions by approximately 120 tons annually, lower fuel costs by over 250,000 yuan, and provides a range of ≥12 hours and a power response speed of <0.3 seconds, significantly improving the vehicle's environmental friendliness, economy, and operational efficiency.

[0010] A protective device for the electric drive system of an integrated tank truck includes a leaf spring, a battery module frame, a high-strength bracket, a sunshade, and a protective steel plate, with the battery module frame mounted on the main frame.

[0011] Leaf springs are installed between the front axle and the main frame, and column damping pads are installed between the gearbox and the main frame. Leaf springs and column damping pads are used to absorb low-frequency vibrations.

[0012] Rubber shock-absorbing pads are installed between the battery module frame and the main frame to absorb mid-frequency vibrations;

[0013] Polyurethane damping pads are placed on the mounting surface of the battery module to eliminate high-frequency vibrations;

[0014] Protective steel plates are installed on the outside of the battery module frame, and a heat insulation layer is installed inside the sun awning at the rear of the cab to isolate heat radiation and dust intrusion.

[0015] The battery module frame is equipped with a metal bracket, which is used to fix the cooling pipes and electrical wiring harness, and the electrical wiring harness is connected to the controller.

[0016] The technical solution of this application has the following technical features:

[0017] To address the problem of battery thermal runaway and electrical component insulation degradation caused by high-temperature heat radiation and slag splashing in metallurgical field conditions, this application adopts a triple thermal insulation protection structure (protective steel plate, ceramic fiber insulation layer and fire-resistant wrapped wire harness), which overcomes the shortcomings of insufficient insulation layer thickness and single structure inability to withstand high temperatures in the prior art, and achieves the technical effect of significantly reducing the impact of heat radiation and ensuring the long-term stable operation of battery and controller.

[0018] To address the issue of shortened battery module and controller lifespan due to vibration and impact during heavy-load operation of tank trucks, this application employs a three-stage damping structure consisting of leaf springs, straight column damping pads, rubber damping pads, and polyurethane damping pads. This overcomes the shortcomings of existing technologies that rely solely on a single-stage rubber pad and cannot cover the entire frequency range of vibrations, achieving the technical effect of controlling the horizontal deviation of the battery module within ±2° and improving the overall vehicle vibration protection capability.

[0019] The technical solution provided in this application also has the following technical features:

[0020] Preferably, in one embodiment of this application, the steel leaf spring, the straight column damping pad, the rubber damping pad, and the polyurethane damping pad form a three-level damping structure, which corresponds to low-frequency, medium-frequency, and high-frequency vibrations, respectively, so that the levelness of the battery module is controlled within ±2°.

[0021] Preferably, in one embodiment of this application, the protective steel plate is a high-temperature resistant metal plate with a thickness greater than 2 mm, used to block heat radiation and dust intrusion and absorb external impact.

[0022] Preferably, in one embodiment of this application, a ceramic fiber insulation layer with a thickness of 30-50 mm is provided on the inner side of the sunshade to block high-temperature radiation from the steel slag heat pack.

[0023] Preferably, in one embodiment of this application, the cooling pipes provided on the metal support are covered with fire-resistant sleeves, and the temperature resistance index of the fire-resistant sleeves is not less than 1000°C. The electrical wiring harnesses are run through the corrugated pipes and coated with fire-retardant coatings.

[0024] Preferably, in one embodiment of this application, the battery module frame is fixed to the main vehicle frame by a high-strength bracket to protect the battery module.

[0025] Preferably, in one embodiment of this application, a guide plate is provided at the bottom of the battery module frame to form an airflow channel during driving, thereby improving the heat dissipation efficiency and dust removal of the battery module. In order to solve the problem of short circuits in the electrical system and blockage of the heat dissipation channel caused by dust and high-temperature fumes, this application provides a guide plate structure at the bottom of the battery module frame, which uses the airflow during driving to form a heat dissipation and dust removal channel, overcoming the defects of imperfect dustproof sealing and low heat dissipation efficiency in the prior art, and achieving the technical effect of improving heat dissipation efficiency by 25% and reducing maintenance frequency by more than 50%.

[0026] Preferably, in one embodiment of this application, the outer surface of the protective steel plate is coated with a high-temperature resistant and corrosion-resistant coating.

[0027] Preferably, in one embodiment of this application, the battery module frame, protective steel plate, and metal bracket are modular structures for quick disassembly and assembly during inspection and maintenance. In order to solve the problems of high vehicle maintenance costs and inconvenient maintenance, this application adopts a modularly designed battery module frame, protective steel plate, and metal bracket, which overcomes the defects of poor matching between existing protective devices and vehicle bodies and difficulties in maintenance and disassembly, and achieves the technical effect of shortening the maintenance cycle by 40% and reducing maintenance costs.

[0028] Preferably, in one embodiment of this application, an integrated tank-carrying vehicle includes a battery system, a powertrain, an electric drive system, and a cab, with the electric drive system equipped with the aforementioned electric drive system protection device.

[0029] Additional aspects and advantages of this invention 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 invention.

[0030] 1. This application utilizes a three-stage vibration damping structure, which controls the horizontal deviation of the battery module within ±2°, avoiding the risk of battery thermal runaway due to loosening; the triple heat insulation system can reduce external heat radiation by about 40%, effectively preventing the degradation of the insulation performance of electrical components; and through full-spectrum vibration protection, it improves the lifespan of the battery and controller by about 30%.

[0031] Through the thermal insulation system, external heat radiation is effectively reduced by more than 40%, preventing electrical components from failing due to high temperatures; through the combination of full-spectrum vibration damping and thermal insulation, the lifespan of battery modules and controllers is increased by about 30%, and the mean time between failures (MTBF) of the electric drive system is extended to more than 20,000 hours.

[0032] The air deflector design improves heat dissipation efficiency by 25%, reducing dust accumulation and maintenance frequency.

[0033] 2. The modular protection structure facilitates rapid maintenance, reducing maintenance time by 40%, improving equipment operating efficiency, and significantly reducing downtime losses;

[0034] Compared to traditional fuel-powered tanker trucks, this application achieves a reduction of approximately 120 tons of carbon emissions per year and a reduction of over 250,000 yuan in fuel costs, demonstrating significant economic and environmental benefits. The vehicle has a range of ≥12 hours and a power response time of less than 0.3 seconds, meeting the high-intensity operation requirements of metallurgical sites. Attached Figure Description

[0035] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0036] Figure 1 This is a front view of the protective device for the electric drive system of an integrated tank-holding truck according to this utility model;

[0037] Figure 2 This is a perspective view of a protective device for an integrated tank-carrying vehicle's electric drive system according to this utility model.

[0038] Components in the diagram:

[0039] 1. Front axle

[0040] 2. Leaf spring

[0041] 3. Main frame

[0042] 4. Transmission

[0043] 5. Battery module frame

[0044] 6. Rubber shock-absorbing pads

[0045] 7. High-strength support

[0046] 8. Battery Module

[0047] 9. Polyurethane shock-absorbing pads

[0048] 10. Driver's cab

[0049] 11. Sunshade

[0050] 12. Protective steel plate

[0051] 13. Metal bracket

[0052] 14. Controller

[0053] 15. Straight column type shock absorption pad. Detailed Implementation

[0054] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.

[0055] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0058] like Figure 1-2 A protective device for the electric drive system of an integrated tank truck includes a leaf spring 2, a battery module frame 5, a high-strength bracket 7, a sunshade 11, and a protective steel plate 12. The battery module frame 5 is mounted on the main frame 3.

[0059] The leaf spring 2 is installed between the front axle 1 and the main frame 3, and the straight column damping pad 15 is installed between the gearbox 4 and the main frame 3. The leaf spring 2 and the straight column damping pad 15 are used to absorb low frequency vibrations.

[0060] Rubber shock-absorbing pads 6 are installed between the battery module frame 5 and the main frame 3 to absorb mid-frequency vibrations;

[0061] Polyurethane damping pads 9 are installed on the mounting surface of the battery module 8 to eliminate high-frequency vibrations;

[0062] A protective steel plate 12 is installed on the outside of the battery module frame 5, and a heat insulation layer is installed on the inside of the sun awning 11 at the rear of the cab 10 to isolate heat radiation and dust intrusion.

[0063] The battery module frame 5 is equipped with a metal bracket 13, which is used to fix the cooling pipes and electrical wiring harness. The electrical wiring harness is connected to the controller 14.

[0064] When implementing this application, the key points are as follows:

[0065] 1. A combination structure of leaf spring 2 and straight column shock absorber 15 is adopted to withstand and mitigate low-frequency large-amplitude impacts generated during vehicle operation, ensuring the stability of the main frame 3 and gearbox 4;

[0066] 2. Rubber damping pads 6 are arranged between the battery module frame 5 and the main frame 3 to reduce mid-frequency vibration; polyurethane damping pads 9 are arranged on the mounting surface of the battery module 8 to absorb high-frequency micro-vibrations. The three-level damping system ensures the stability and lifespan of the battery module operation.

[0067] 3. A protective steel plate 12 is added to the outside of the battery module frame 5 to form a physical barrier for the battery module 8 to resist high-temperature steel slag splashes and external impacts; at the same time, a heat insulation layer is set on the inside of the sun awning 11 at the rear of the cab 10 to reflect and block high-temperature heat radiation.

[0068] 4. The metal bracket 13 serves as an auxiliary structure of the battery module frame 5, used for the reliable fixing of cooling pipes and electrical wiring harnesses. The electrical wiring harnesses are further connected to the controller 14, thereby realizing the control and management of the electric drive system.

[0069] In the working process described in this application, the ladle-carrying vehicle operates under high temperature, heavy load, and vibration / impact conditions at the metallurgical site.

[0070] When the vehicle is in motion or fully loaded with steel slag, the leaf springs 2 between the front axle 1 and the main frame 3 and the straight column damping pads 15 between the gearbox 4 and the main frame 3 work together to effectively absorb low-frequency impact forces from the road surface. On this basis, the battery module frame 5 further reduces the mid-frequency vibration energy through the rubber damping pads 6, and the polyurethane damping pads 9 on the mounting surface of the battery module 8 suppress high-frequency vibration, so that the battery module 8 maintains a stable horizontal state and avoids loosening of connectors or failure of the battery pack due to vibration.

[0071] Meanwhile, the protective steel plate 12 covering the battery module frame 5 and the heat insulation layer inside the sunshade 11 form a double protective barrier, which can block the strong radiant heat and dust intrusion from the steel slag heat pack and prevent heat from penetrating into the battery and controller 14; the cooling pipes are fixed by the metal bracket 13 and covered with fire-resistant sleeves to achieve continuous cooling of the battery module; the electrical wiring harness is protected by a fireproof coating and connected to the controller 14 to ensure the safe and reliable operation of the vehicle's electric drive system under extreme conditions;

[0072] In summary, this application, through a comprehensive design of three-level shock absorption, triple heat insulation, and metal bracket auxiliary fixation, enables the electric drive system of the integrated tank truck to maintain long-term stable and safe operation in high-temperature, high-vibration, and dusty environments.

[0073] Specifically, in one embodiment of this application, the three-stage damping structure of the leaf spring 2, the straight column damping pad 15, the rubber damping pad 6, and the polyurethane damping pad 9 is coaxially arranged during assembly using positioning pins and limiting grooves. This allows vibration energy of different frequency bands to be absorbed and dissipated in stages, thereby avoiding superimposed resonance. Simultaneously, the battery module frame 5 is fastened to the rubber damping pad 6 on the main frame 3 using high-strength bolts, and the polyurethane damping pad 9 is installed on its mounting surface to achieve flexible support and tight fit for the battery module 8, ensuring the battery module remains stable under complex vehicle operating conditions. During operation, low-frequency vibrations are first buffered by the leaf spring 2 and the straight column damping pad 15, mid-frequency disturbances are attenuated by the rubber damping pad 6, and high-frequency impacts are absorbed by the polyurethane damping pad 9. This achieves full-frequency protection for the battery module 8, ensuring it remains stable even when subjected to impacts or continuous vibrations. Ultimately, this ensures that the horizontality of the battery module 8 is always controlled within ±2°, achieving the expected technical effect of improving battery safety and system reliability.

[0074] Specifically, in one embodiment of this application, the protective steel plate 12 is made of high-temperature resistant metal sheet with a thickness greater than 2mm. It is fixed to the outside of the battery module frame 5 by bolts and high-strength brackets 7 to form a complete protective cover structure. This structure effectively blocks heat radiation and dust intrusion from the hot steel slag package and absorbs external impact energy to protect the battery module 8 and related electrical components. The outer surface of the protective steel plate 12 is further coated with a high-temperature resistant and anti-corrosion coating. This coating not only enhances the durability of the steel plate in high-temperature and chemical corrosion environments, but also improves the surface heat reflection capability, slows down heat conduction to the internal battery module, and achieves long-term safety protection for the electric drive system.

[0075] Specifically, in one embodiment of this application, a ceramic fiber insulation layer with a thickness of 30-50mm is provided on the inner side of the sun awning 11. This insulation layer is fastened to the inner surface of the sun awning 11 by an adhesive and a fixing bracket to effectively block high-temperature radiation from the steel slag hot package and reduce the risk of heat transfer to the cab 10 and the electric drive system. At the same time, the cooling pipes installed on the metal bracket 13 are covered with fire-resistant sleeves. The fire-resistant sleeves have a temperature resistance index of not less than 1000℃ and can maintain the insulation and structural integrity of the pipes for a long time in high-temperature environments. The electrical wiring harness is run through a corrugated pipe and coated with a fireproof coating to prevent damage to the wiring harness by high temperature or sparks, thereby ensuring the safe and stable operation of the electrical control system and controller 14 under extreme conditions.

[0076] Specifically, in one embodiment of this application, the battery module frame 5 is fixed to the main frame 3 by a high-strength bracket 7 to form a stable support structure for providing reliable physical protection for the battery module 8. A deflector is provided at the bottom of the battery module frame 5, which enhances the heat dissipation of the battery module 8 and promotes dust discharge through the airflow channel formed during driving, thereby improving the battery working environment and extending its service life. At the same time, the battery module frame 5, the protective steel plate 12 and the metal bracket 13 are designed as a modular structure, which can be quickly assembled and disassembled as a whole through standardized interfaces and quick connectors, which facilitates the inspection and maintenance of the battery module and related protective components, reduces downtime and improves operation and maintenance efficiency.

[0077] Specifically, in one embodiment of this application, an integrated tank-carrying vehicle includes a battery system, a powertrain, an electric drive system, and a cab 10, with the electric drive system equipped with the aforementioned electric drive system protection device.

[0078] Specifically, in one embodiment of this application, an innovative integrated tank-carrying truck electric drive system with multiple protective structures, through the setting of physical shock absorption protection and heat insulation protection systems, has the following technical features:

[0079] Physical shock absorption and protection:

[0080] The three-stage damping design ensures the stability of the electric drive system structure. The front axle 1 is the drive axle, which is connected to the main frame 3 using nine custom-made steel leaf springs 2. At the same time, a straight column-type shock absorber battery module frame 5 is added at the connection between the gearbox 4 and the main frame 3 for protection, filtering low-frequency vibrations and reducing road impacts and vibration intensity of various components. A rubber shock absorber 6 is set between the battery module frame 5 and the main frame 3. The rubber shock absorber 6 has a Shore hardness of 45°, which absorbs mid-frequency vibrations and is fixed to the main frame 3 with a custom high-strength bracket 7. The battery module 8 is installed on the battery module frame 5, and polyurethane shock absorber 9 is embedded on the mounting surface to eliminate high-frequency vibrations and ensure that the level of the battery module 8 is always controlled within 1.5°.

[0081] Thermal insulation system:

[0082] A triple-layer thermal insulation protection system is established. The first layer of insulation involves installing 40mm thick ceramic fiber insulation cotton inside the sun awning 11 at the rear of the cab 10 to block most of the heat radiation from the steel slag heat pack behind. The second layer of insulation involves installing 2mm thick protective steel plates 12 on the outside of the battery pack frame and battery module frame 5 to block heat radiation and dust intrusion, while also absorbing a certain amount of impact. The third layer of insulation involves fixing all cooling pipes with metal brackets 13 and wrapping them with fire-resistant pipes or sleeves with a temperature resistance of ≥1000℃. All wiring harnesses are run through corrugated pipes and coated with fire-retardant paint. Through the above protective structure, key components such as the battery module 8, motor, and four-in-one controller 14 are protected in all aspects, while ensuring that there is sufficient heat dissipation space and maintenance passage between each component.

[0083] Advantages compared to traditional fuel-powered tanker trucks:

[0084] 1. Energy saving and environmental protection: Compared with fuel vehicles, each vehicle reduces carbon emissions by about 120 tons per year and reduces fuel costs by 250,000 yuan per year.

[0085] 2. Performance Improvement: Battery life ≥ 12 hours, power response delay < 0.3 seconds, and significantly reduced failure rate;

[0086] 3. Safe and reliable: The triple protection system ensures stable operation of the battery and electrical system in high temperature and high vibration environments;

[0087] In summary, this utility model aims to solve the problem that existing integrated tank-carrying vehicles are susceptible to malfunctions and safety hazards caused by the susceptibility of core components of the electric drive system, such as battery modules, motors, and controllers, to heat radiation, vibration, and dust intrusion under complex metallurgical conditions such as high temperature, heavy load, and dust. By constructing a three-level shock absorption structure, a triple heat insulation protection system, and a modular protection frame, the electric drive system can achieve stable operation under low-frequency, medium-frequency, and high-frequency vibrations, block high-temperature heat radiation and dust intrusion, and facilitate heat dissipation and maintenance. This significantly improves the operational reliability, service life, and safety of the entire vehicle, while reducing maintenance costs and production losses.

[0088] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A protective device for the electric drive system of an integrated tank-holding truck, characterized in that, Includes leaf spring (2), battery module frame (5), high-strength bracket (7), sunshade (11), and protective steel plate (12). The battery module frame (5) is mounted on the main frame (3). The leaf spring (2) is mounted between the front axle (1) and the main frame (3), and the straight column damping pad (15) is mounted between the gearbox (4) and the main frame (3). The leaf spring (2) and the straight column damping pad (15) are used to absorb low-frequency vibrations. Rubber shock absorbers (6) are placed between the battery module frame (5) and the main frame (3) to absorb mid-frequency vibrations; Polyurethane damping pads (9) are placed on the mounting surface of the battery module (8) to eliminate high-frequency vibrations; A protective steel plate (12) is installed on the outside of the battery module frame (5), and a heat insulation layer is installed inside the sun awning (11) at the rear of the cab (10) to isolate heat radiation and dust intrusion. The battery module frame (5) is equipped with a metal bracket (13), which is used to fix the cooling pipes and electrical wiring harness. The electrical wiring harness is connected to the controller (14).

2. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The steel leaf spring (2), the straight column damping pad (15), the rubber damping pad (6) and the polyurethane damping pad (9) form a three-level damping structure, which corresponds to low frequency, medium frequency and high frequency vibration respectively, so that the level of the battery module (8) is controlled within ±2°.

3. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The protective steel plate (12) is a high-temperature resistant metal plate with a thickness greater than 2mm, used to block heat radiation and dust intrusion and absorb external impact.

4. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The inner side of the sunshade (11) is provided with a ceramic fiber insulation layer with a thickness of 30-50mm to block the high temperature radiation from the steel slag heat pack.

5. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The cooling pipes installed on the metal bracket (13) are covered with fire-resistant sleeves, and the temperature resistance index of the fire-resistant sleeves is not less than 1000℃. The electrical wiring harnesses are run through the corrugated pipes and coated with fireproof coating.

6. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The battery module frame (5) is fixed to the main frame (3) by a high-strength bracket (7) to protect the battery module (8).

7. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 6, characterized in that, A deflector is provided at the bottom of the battery module frame (5) to form an airflow channel during driving, thereby improving the heat dissipation and dust removal of the battery module (8).

8. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 3, characterized in that, The outer surface of the protective steel plate (12) is coated with a high-temperature resistant and corrosion-resistant coating.

9. The protective device for the electric drive system of an integrated tank-holding truck as described in claim 1, characterized in that, The battery module frame (5), protective steel plate (12) and metal bracket (13) are modular structures for quick disassembly and assembly during inspection and maintenance.

10. An integrated tank-carrying vehicle, comprising a battery system, a powertrain, an electric drive system, and a cab (10), characterized in that, The electric drive system is equipped with the electric drive system protection device as described in any one of claims 1-9.

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