A heated sump with reduced noise

Abstract

The application relates to a heating and noise reduction oil sump, belonging to the technical field of engines, which comprises a shell assembly, an intermediate filling layer and a heating assembly. The shell assembly comprises an outer shell and an inner shell, and the inner shell is in contact with oil. The intermediate filling layer is arranged between the outer shell and the inner shell. The heating assembly is arranged in the intermediate filling layer. By embedding the heating assembly in the intermediate filling layer between the outer shell and the inner shell, direct and efficient preheating of lubricating oil is realized, the viscosity of the lubricating oil in a low-temperature environment can be effectively reduced, the cold start success rate of the engine is significantly improved, and the abrasion of parts in the engine is reduced.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to a heated and noise-reducing oil pan. Background Technology

[0002] The engine oil pan, located at the bottom of the crankcase, serves to seal the crankcase, acting as an oil reservoir to prevent impurities from entering and to collect and store the lubricating oil flowing back from the engine's various friction surfaces. When a vehicle is in a high-altitude or cold-weather environment, the temperature inside the oil pan is low during initial starting due to the low temperatures. The lubricating oil inside is in a cooled state, its viscosity increases, and its flow is poor. This leads to increased wear on internal engine components, difficulty starting, and consequently, affects engine life and may even cause cylinder scoring. Furthermore, the noise generated during engine operation is radiated to the outside through the oil pan, resulting in a relatively high overall engine noise level.

[0003] Currently, there are several common methods for starting the engine in extremely cold weather: adding boiling water to the engine cooling system to force heating the engine block; heating the oil pan with an open flame to raise the oil temperature; and using an external emergency starter to continuously run the motor and start the engine. However, these methods all have drawbacks such as complex operation, significant safety hazards, and uneven heating. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide a heated and noise-reducing oil pan.

[0005] To achieve the above objectives, this application provides a heated and noise-reducing oil pan, employing the following technical solution:

[0006] A heated and noise-reducing oil pan includes a shell assembly, an intermediate filler layer, and a heating assembly. The shell assembly includes an outer shell and an inner shell, with the inner shell in contact with the oil. The intermediate filler layer is disposed between the outer shell and the inner shell, and the heating assembly is disposed within the intermediate filler layer.

[0007] Furthermore, the surface of the intermediate filling layer is provided with a plurality of limiting grooves at intervals, the limiting grooves being used to fix the heating component.

[0008] Furthermore, the heating component is a resistance wire, which is laid in the intermediate filling layer.

[0009] Furthermore, the resistance wire is laid in at least two layers from top to bottom, with an insulating layer between adjacent layers.

[0010] The intermediate filler layer is equipped with a temperature sensor, which is used to monitor the temperature of the oil pan.

[0011] The outer shell is a structure made of at least one of stainless steel, aluminum alloy, and engineering plastic composite materials.

[0012] The inner shell is a structure made of stainless steel or engineering plastic composite material.

[0013] A mica sheet is provided between the inner shell and the intermediate filling layer; ceramic fiber cotton is provided between the outer shell and the intermediate filling layer, and the ceramic fiber cotton at least covers the area where the resistance wire is laid.

[0014] The oil pan also includes a rubber sealing ring disposed between the inner shell and the intermediate filling layer.

[0015] The oil pan also includes a safety protection component, which includes a circuit protection device and a grounding device. The circuit protection device is connected to the vehicle's electrical system, and the grounding device is connected to the outer casing.

[0016] The beneficial effects of this application are:

[0017] This heated and noise-reducing oil pan features a compact and efficient "sandwich" structure, where the heating element is embedded within an intermediate filler layer between the outer and inner shells. This structure enables direct and efficient preheating of the lubricating oil, effectively reducing its viscosity at low temperatures, significantly improving engine cold start success rate, and reducing wear. Simultaneously, its highly integrated structure requires no additional space, has a short heat transfer path, and high heating efficiency. The inner shell physically isolates the electrically charged heating element from the oil, enhancing safety. Furthermore, the intermediate filler layer provides a foundation for the subsequent integration of thermal insulation and noise reduction materials such as ceramic fiber cotton, facilitating the integration of multiple functions including heating, insulation, and noise reduction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a partial cross-section of the heating and noise reduction oil pan of this application;

[0020] Figure 2 This is a flowchart illustrating the heating process for the noise-reducing oil pan in this application.

[0021] In the diagram, 100 is the shell assembly; 110 is the outer shell; 120 is the inner shell; 200 is the intermediate filling layer; 300 is the heating assembly; 400 is the mica sheet; and 500 is the ceramic fiber cotton. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0027] This application discloses a heated and noise-reducing oil pan, including a housing assembly 100, an intermediate filling layer 200, and a heating assembly 300. The housing assembly 100 includes an outer shell 110 and an inner shell 120, with the inner shell 120 in contact with the oil. The intermediate filling layer 200 is disposed between the outer shell 110 and the inner shell 120. The heating assembly 300 is disposed within the intermediate filling layer 200.

[0028] like Figure 1 As shown, the outermost shell 110 is the external structure of the oil pan. It directly bears the influence of the external environment (such as road impact, dust, and water vapor). Its main functions are to provide structural support, protect internal components, and form the overall shape of the oil pan.

[0029] The inner housing 120 is located in the innermost layer, and its inner surface is in direct contact with the engine lubricating oil. Its main function is to contain the lubricating oil and ensure that the oil is isolated from the external environment and heating system. The material and surface of the inner housing 120 have good oil resistance, corrosion resistance and wear resistance to ensure long-term reliable operation.

[0030] The intermediate filling layer 200 is a space or region located between the outer shell 110 and the inner shell 120. This "layer" is not a single homogeneous material, but rather a functional area whose core function is to accommodate the heating component 300 and serve as an integration platform for different functional materials. It physically and functionally separates the outer shell 110 and the inner shell 120, and is a key structure for achieving heating and noise reduction functions.

[0031] The heating element 300 is one or more heating elements embedded within the intermediate filler layer 200. Its function is to convert electrical energy into heat energy. When needed (such as before starting the engine in a low-temperature environment), the heating element 300 is energized and generates heat. Because it is located within the intermediate filler layer 200, the heat it generates can be effectively transferred to the internal lubricating oil through the inner housing 120, thereby heating the lubricating oil.

[0032] The heating and noise reduction oil pan provided in this application adopts a sandwich-style layered structure design. By directly integrating the heating component 300 into the middle layer of the oil pan, heat can be generated before the engine starts to directly and efficiently preheat the lubricating oil. This avoids the problem that the viscosity of the lubricating oil will increase sharply in cold environments, leading to difficulty in starting the engine and increased wear. It effectively reduces the viscosity of the lubricating oil, improves its fluidity, thereby significantly improving the engine's starting success rate in low-temperature environments, reducing mechanical wear during cold starts, and extending engine life.

[0033] Furthermore, by embedding the heating function within the structure of the oil pan itself, there is no need to install additional external heating equipment (such as heating blankets or heating plates). The heating component 300 is accommodated by utilizing the existing structural gap between the outer shell 110 and the inner shell 120 or a specially designed interlayer as an "intermediate filling layer 200," achieving a fusion of function and structure. This integrated design does not occupy additional space in the engine compartment, has a compact structure, and is easy to install and maintain.

[0034] Furthermore, the inner housing 120 acts as a barrier to the direct contact with the oil, separating the heating element 300 from the oil. Even if the heating element 300 malfunctions, as long as the inner housing 120 remains intact, it can effectively prevent oil leakage into the heating area or electrical energy conduction into the oil, avoiding safety hazards such as short circuits and fires. It physically isolates the energized heating element 300 from the oil, improving the safety of use.

[0035] In one embodiment of this application, the surface of the intermediate filling layer 200 is provided with a plurality of limiting grooves, which are used to fix the heating component 300.

[0036] The limiting grooves are multiple recesses or grooves spaced at intervals on the surface of the intermediate filler layer 200 (typically the inner surface facing the inner housing 120 or the inner surface used to lay the heating assembly 300). By providing multiple spaced limiting grooves on the surface of the intermediate filler layer 200, a clear installation path and physical constraint can be provided for the heating assembly 300. Furthermore, when the oil pan is subjected to vibrations, bumps, or thermal expansion and contraction during vehicle operation, the heating assembly 300 is firmly confined within the grooves, effectively preventing it from sliding, twisting, entanglement, or falling off. This ensures the precise and stable positioning of the heating assembly 300 during manufacturing, assembly, and oil pan operation, preventing displacement of the heating unit and guaranteeing the long-term reliability of the heating system.

[0037] Based on the spacing and distribution pattern of the limiting grooves (e.g., uniform grid or spiral), the laying density and orientation of the heating component 300 can be precisely controlled. This allows the heat generated by the heating component 300 to be distributed more evenly at the bottom of the oil pan, thereby achieving uniform heating of the lubricating oil and preventing oil deterioration due to local high temperature or affecting starting performance due to local low temperature.

[0038] The limiting groove acts as a "guide line" or "template," allowing workers or automated equipment to lay the heating component 300 according to the limiting groove without additional measurement or positioning. This makes the assembly process simpler and faster, reducing the possibility of assembly errors.

[0039] The limiting groove provides a certain degree of physical protection for the heating component 300, making it less likely to be accidentally scratched or damaged by tools during assembly. At the same time, the fixed position also reduces frictional damage caused by component movement, lowering the risk of damage to the heating component 300 during installation and use.

[0040] In one embodiment of this application, the heating component 300 is a resistance wire, which is laid in the intermediate filling layer 200.

[0041] The resistance wire is a thin, filamentous conductor made of a metal or alloy with high resistivity (such as nickel-chromium alloy, iron-chromium-aluminum alloy, etc.). When current flows through it, Joule heating is generated due to its own resistance, thus generating heat. The intermediate filler layer 200 is located in the interlayer region between the outer shell 110 and the inner shell 120, serving as the mounting and working space for the resistance wire. In this embodiment, the resistance wire is placed within the intermediate filler layer 200 in a specific manner (such as winding, coiling, serpentine arrangement, etc.) to ensure good thermal contact with the inner shell 120, so as to efficiently transfer heat to the oil.

[0042] Nickel-chromium alloy resistance wire possesses excellent properties such as high temperature resistance, oxidation resistance, and stable resistance, enabling it to operate stably for extended periods within the working temperature range of the oil pan, ensuring the reliability and service life of the preheating function. Furthermore, the resistance wire generates heat almost instantaneously upon energization (Joule heating effect), exhibiting a very fast thermal response. The generated heat is directly conducted to the oil through the inner casing 120°, resulting in a short and efficient heat transfer path. This allows for rapid conversion of electrical energy into effective heat energy, meeting the demands of rapid preheating. The heat output (power) of the resistance wire is proportional to the square of the current flowing through it (P=IR). By adjusting the input current through external circuitry (such as a temperature controller or relay) or employing on / off control (PWM), the heating power and the final temperature achieved can be conveniently and precisely controlled, enabling on-demand heating of the oil pan.

[0043] In addition, resistance wire has good flexibility and can be bent into various shapes (such as spiral, serpentine, and mesh) to adapt to oil pans of different sizes and contours, ensuring that heat can cover critical areas and optimize heating effect; the laying process of resistance wire is also relatively simple, requiring no complex equipment or expensive materials, which makes the manufacturing cost of the entire heating system lower.

[0044] In one embodiment of this application, the resistance wire is laid in at least two layers from top to bottom, and an insulating layer is provided between adjacent layers.

[0045] To increase the heating area of ​​the resistance wire, the resistance wire can be arranged in layers along the thickness direction of the oil pan within the space of the intermediate filling layer 200, forming at least two or more horizontal heating layers, thereby increasing the coverage and total length of the heating assembly 300 in the vertical direction.

[0046] The insulating layer is a non-conductive material layer placed between two adjacent resistance wires. Its function is to ensure that the upper and lower resistance wires are completely electrically isolated, preventing them from coming into contact and causing a short circuit. This insulating layer has characteristics such as high temperature resistance and good insulation performance, and can be composed of materials such as ceramic fiber cotton 500, mica sheet 400, high temperature resistant insulating varnish, or specific insulating films.

[0047] By designing the resistance wire to be laid in at least two layers from top to bottom, and setting an insulation layer between adjacent layers, a longer resistance wire can be accommodated in the limited space of the intermediate filler layer (200). This means that under the same voltage, a larger total resistance and a higher total heating power will be generated, thus generating more heat in a shorter time and heating the lubricating oil faster. This is especially suitable for scenarios that require rapid heating or heating of a large oil pan, significantly improving the overall heating capacity and heating speed of the oil pan.

[0048] By placing an insulating layer between multiple layers of resistance wires, the different layers are physically isolated, ensuring the independence and integrity of each circuit layer. This eliminates the risk of electrical short circuits when multiple resistance wires are closely arranged, ensuring the long-term safe and reliable operation of high-power, high-density heating systems. It is an important technical means to improve heating performance and system stability. In addition, the insulating layer not only prevents short circuits but may also have a certain degree of heat insulation and buffering effect, reducing thermal interference and mechanical friction between different layers of resistance wires, thereby extending the service life of the entire heating assembly 300.

[0049] In one embodiment of this application, the intermediate filler layer 200 is provided with a temperature sensor, which is used to monitor the temperature of the oil pan.

[0050] Temperature sensors can sense temperature and convert it into a measurable electrical signal. Common types include thermistors (NTC / PTC), thermocouples, and integrated temperature sensor chips. They are installed or integrated inside or on the surface of the intermediate filler layer 200, with the temperature-sensing part as close as possible to the heat source (such as the heating element 300) or the area where temperature needs to be measured (such as near the inner housing 120) to ensure accurate and rapid sensing of temperature changes inside the oil pan, so as to obtain the temperature information of the lubricating oil inside the oil pan in real time.

[0051] The temperature sensor can provide real-time and accurate temperature feedback signals, which can be connected to the control circuit (such as ECU or dedicated temperature controller) to form a temperature control system. The temperature control system can automatically control the on and off of the heating component 300 according to the preset temperature threshold (such as start-up preheating temperature, target operating temperature, maximum safe temperature), so that the heating system can automatically start and stop or adjust the power according to the actual temperature requirements, avoid blind heating, and achieve precise control of "heating when needed and stopping when the temperature is reached".

[0052] The temperature control system controls the temperature of the heating element 300 as follows: Figure 2 As shown, when the diesel engine stops, the temperature control system detects a drop in the oil pan temperature. At this time, the heating system starts, and the resistance wire begins to heat up. Through the insulation and heat insulation material of the middle layer, the heat is transferred to the inner layer in contact with the oil, so that the oil temperature is kept at a high level, thus achieving the function of heat preservation during shutdown.

[0053] Before starting the diesel engine, if the oil pan temperature is still below the ideal temperature, the heating system will continue to work until the temperature reaches the set starting temperature range, thereby reducing wear and fuel consumption during cold starts of the diesel engine.

[0054] When the diesel engine is running, if the oil pan temperature is lower than the normal operating temperature range, the heating system will start heating in a timely manner based on the feedback from the temperature sensor to maintain the appropriate oil temperature; if the temperature is too high, the heating system will stop working.

[0055] Since lubricating oil has its own suitable operating temperature range, the temperature sensor can monitor the temperature in real time. Once the oil temperature is detected to be close to or reach the set upper limit, the temperature control system will immediately cut off the heating power supply to play the role of overheat protection, ensuring that the chemical stability and lubrication performance of the lubricating oil are not damaged, and avoiding oxidation, deterioration or coking caused by continuous heating leading to excessively high lubricating oil temperature.

[0056] With precise temperature feedback, the temperature control system only starts heating when the oil temperature is below the set value and stops heating once the target temperature is reached. This avoids the energy waste that may be caused by traditional timed heating or constant heating modes, improves the efficiency of power utilization, and helps extend battery life and reduce unnecessary power consumption, especially for systems that rely on vehicle battery power.

[0057] In addition, users can check the preheating status of the oil pan based on temperature sensor data through the vehicle's dashboard or related systems, and know when the engine can be started safely and smoothly. This avoids the wear caused by forcibly starting the engine when the oil is not sufficiently preheated, and ensures that the engine starts in the best condition.

[0058] In one embodiment of this application, the outer shell 110 is a structure made of at least one of stainless steel, aluminum alloy and engineering plastic composite material.

[0059] The outer structural layer is optimized based on the conventional design of diesel engine oil pans to ensure good compatibility and installation with other diesel engine components. Different vehicle platforms, engine types, or operating environments have different performance priorities for the oil pan; the most suitable material can be selected based on the specific application scenario, cost budget, and performance requirements.

[0060] Stainless steel can be used as the main material for the outer structural layer. Stainless steel is an iron-based alloy with advantages such as excellent corrosion resistance, high mechanical strength, and low cost.

[0061] High-strength aluminum alloy is selected as the main material for the outer structural layer. Aluminum alloy has the advantages of light weight, high strength, large thermal conductivity and easy processing and forming. The aluminum alloy surface is anodized to form a dense oxide film, which improves its corrosion resistance.

[0062] Using composite materials such as plastics, such as high-performance plastics with excellent mechanical properties, heat resistance, and chemical resistance (e.g., nylon PA, polyphenylene sulfide PPS), or materials composed of plastics and other materials (e.g. fibers), offers advantages such as extremely light weight, corrosion resistance, and high design freedom, which can further reduce the weight of the oil pan.

[0063] Because aluminum alloys and engineering plastic composites have a much lower density than traditional steel, choosing one of these materials, especially engineering plastic composites, can significantly reduce the weight of the outer shell, helping to reduce overall vehicle fuel consumption and emissions, and improve vehicle power and economy. Stainless steel and high-strength aluminum alloys possess good mechanical strength and toughness, capable of withstanding vibrations and external impacts during engine operation. Stainless steel also has excellent corrosion resistance, able to withstand the erosion of oil, moisture, and road salt for a long time, extending the service life of the oil pan.

[0064] In one embodiment of this application, the inner housing 120 is a structure made of stainless steel or engineering plastic composite material.

[0065] Because lubricating oil oxidizes and produces acidic substances at high temperatures, and contains a variety of chemical additives, stainless steel and engineering plastic composite materials have corrosion-resistant properties and can remain stable in harsh chemical environments. This prevents the inner casing 120 from corroding, swelling, aging, or losing strength due to long-term contact with high-temperature lubricating oil, thereby avoiding oil leakage and ensuring the integrity and sealing of the inner casing 120. This is the foundation for the long-term reliable operation of the entire oil pan.

[0066] Moreover, the inner shell 120 is a key insulation and isolation layer to prevent oil from seeping into the intermediate filling layer 200, contacting the heating component 300 and the circuit. Even if the heating component 300 in the intermediate layer fails, as long as the inner shell 120 is intact, it can effectively prevent oil from entering and avoid serious safety accidents such as short circuits and electric sparks igniting oil.

[0067] Stainless steel technology is mature, has high strength, and relatively controllable costs; engineering plastic composite materials are extremely lightweight, have excellent corrosion resistance, are highly designable, and are easy to mold complex curved surfaces. Users can choose the most suitable material solution based on their different priorities regarding weight, cost, and processing technology.

[0068] In one embodiment of this application, a mica sheet 400 is provided between the inner shell 120 and the intermediate filling layer 200; a ceramic fiber cotton 500 is provided between the outer shell 110 and the intermediate filling layer 200, and the ceramic fiber cotton 500 at least covers the area where the resistance wire is laid.

[0069] Mica sheet 400 is a natural or synthetic silicate mineral sheet. It possesses excellent high-temperature resistance and good thermal conductivity. When laid between the resistance wire and the inner housing 120, it quickly flattens and diffuses the point-like or linear high-temperature "hot spots" generated by the resistance wire, forming a more uniform heating surface. This allows for the stable transfer of heat to the inner housing 120 and the oil, preventing carbonization or performance degradation of the oil due to localized high temperatures in the resistance wire, ensuring uniform and gentle heating of the oil. Furthermore, mica sheet 400 has excellent insulation properties, forming a robust insulating barrier between the resistance wire and the inner housing 120. This effectively prevents current from being conducted through the inner housing 120 to the oil or engine block, avoiding short circuits and the risk of electric shock.

[0070] Ceramic fiber cotton 500 is a flocculent or felt-like thermal insulation material made of ceramic fibers. It has excellent thermal insulation and high temperature resistance. It is filled between the outer shell 110 and the intermediate filling layer 200, especially covering the area of ​​the heating resistance wire, forming a thermal insulation layer. This greatly hinders the loss of heat to the external environment, reduces energy consumption, and forces the heat to be mainly conducted to the inner shell 120 and the direction of the oil. It retains the heat generated by heating to the maximum extent inside the oil pan for heating the oil, thereby significantly improving the overall thermal efficiency of the heating system.

[0071] Furthermore, the ceramic fiber cotton 500 has a porous and fluffy structure, which provides a certain degree of sound absorption and noise reduction. It can effectively absorb the vibration energy and sound waves transmitted through the oil pan structure during engine operation. As part of the intermediate filler layer 200, it plays a role in damping and sound absorption, reducing the noise radiated outward from the oil pan, thereby improving the vehicle's NVH performance.

[0072] By placing a mica sheet 400 between the inner shell 120 and the intermediate filling layer 200, and placing ceramic fiber cotton 500 covering the resistance wire area between the outer shell 110 and the intermediate filling layer 200, a complementary "double barrier" system is formed. At the same time, the mica sheet 400 and the ceramic fiber cotton 500 can provide physical protection for the resistance wire. The mica sheet 400 prevents the inner shell 120 from deforming or the oil pressure from directly squeezing the resistance wire, while the ceramic fiber cotton 500 buffers external impacts and vibrations, reducing the risk of the resistance wire breaking due to mechanical stress.

[0073] In one embodiment of this application, the oil pan further includes a rubber sealing ring disposed between the inner housing 120 and the intermediate filling layer 200.

[0074] A rubber sealing ring is a ring-shaped or strip-shaped sealing element made of elastic rubber material (such as nitrile rubber (NBR), fluororubber (FKM), etc.). It is specially set at the joint or connection interface between the inner housing 120 and the intermediate filling layer 200. By utilizing the elastic deformation ability of rubber, it is compressed after assembly, which can form a tight and continuous physical barrier between the inner housing 120 and the intermediate filling layer 200. It can fill the tiny gaps and uneven areas at the joint between the inner housing 120 and the intermediate filling layer 200, forming a reliable static seal, and effectively preventing lubricating oil from seeping into the intermediate filling layer 200 from the inner housing 120 area.

[0075] Furthermore, rubber materials possess excellent elasticity and a certain temperature adaptability range. When the inner shell 120 and the intermediate layer structure undergo slight expansion or contraction due to temperature changes, the rubber sealing ring can elastically deform accordingly, making it less prone to cracking or failure due to thermal stress. This ensures that the oil pan maintains a good sealing effect and continuously provides sealing pressure even when experiencing temperature changes, thus guaranteeing the durability of the seal.

[0076] In one embodiment of this application, the oil pan further includes a safety protection component, which includes a circuit protection device and a grounding device. The circuit protection device is connected to the vehicle's electrical system, and the grounding device is connected to the outer casing 110.

[0077] The safety protection component is an integrated safety subsystem consisting of two core components that work together to provide dual safety protection for the electrical system of the oil pan. It aims to ensure the safe operation of the heating circuit inside the oil pan and prevent accidents caused by electrical faults.

[0078] The circuit protection device refers to a safety component installed in the power supply circuit of the heating assembly 300, commonly a fuse or circuit breaker. Its function is to automatically cut off the power supply when an abnormality occurs in the circuit (such as overcurrent or short circuit). This device is connected to the vehicle's electrical system and is connected to the vehicle's power supply and control network, capable of receiving power and being monitored or controlled by the vehicle system. The grounding device refers to a device that reliably connects the outer casing 110 of the oil pan to the vehicle chassis or the negative terminal of the battery via a wire.

[0079] In one embodiment of this application, by adopting a low-voltage power supply scheme that uses a 12V / 24V DC power supply and is compatible with vehicle batteries, not only are the fatal safety risks caused by high voltage completely eliminated, but also seamless and efficient integration with the vehicle system is achieved. This enables the power supply system to be plug-and-play and has the advantages of convenient installation, low cost, high efficiency, and good reliability.

[0080] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A heated sump with noise reduction, characterized in that, include: The housing assembly (100), the intermediate filling layer (200), and the heating assembly (300) include an outer shell (110) and an inner shell (120), the inner shell (120) being in contact with the oil. The intermediate filling layer (200) is disposed between the outer shell (110) and the inner shell (120); The heating component (300) is disposed within the intermediate filling layer (200).

2. The heated sump of claim 1, wherein, The surface of the intermediate filling layer (200) is provided with a plurality of limiting grooves at intervals, the limiting grooves being used to fix the heating assembly (300).

3. The heated, noise-reducing oil pan of claim 1, wherein, The heating component (300) is a resistance wire, which is laid in the intermediate filling layer (200).

4. The heated sump of claim 3, wherein, The resistance wire is laid in at least two layers from top to bottom, with an insulating layer between adjacent layers.

5. The heated, noise-reducing oil pan of claim 1, wherein, The intermediate filler layer (200) is equipped with a temperature sensor for monitoring the temperature of the oil pan.

6. The heated, noise-reducing oil pan of claim 1, wherein, The outer shell (110) is a structure made of at least one of stainless steel, aluminum alloy and engineering plastic composite material.

7. The heated, noise-reducing oil pan of claim 1, wherein, The inner shell (120) is a structure made of stainless steel or engineering plastic composite material.

8. The heated, noise-reducing oil pan of claim 3, wherein, A mica sheet (400) is provided between the inner shell (120) and the intermediate filling layer (200); Ceramic fiber cotton (500) is provided between the outer shell (110) and the intermediate filling layer (200), and the ceramic fiber cotton (500) covers at least the area where the resistance wire is laid.

9. The heated, noise-reducing oil pan of claim 1, wherein, The oil pan also includes a rubber sealing ring disposed between the inner shell (120) and the intermediate filling layer (200).

10. The heated sump of claim 1, wherein, The oil pan also includes a safety protection component, which includes a circuit protection device and a grounding device. The circuit protection device is connected to the vehicle's electrical system, and the grounding device is connected to the outer casing (110).

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