Aluminum oxide ceramic heating take-out box heat preservation device driven by battery

Abstract

The invention discloses a battery-driven aluminum oxide ceramic heating take-out box heat preservation device, and relates to the technical field of take-out delivery temperature control equipment. The device comprises an aluminum oxide ceramic heating module, a battery power supply module, an intelligent temperature control module, a soaking heat dissipation module and a take-out box, a sliding groove is formed in the take-out box, a sliding block is slidably connected into the sliding groove, one end of a first spring is fixedly installed at each of the two ends of the sliding block, and the other end of the first spring is fixedly installed on the inner wall of the sliding groove; the sliding block is fixedly provided with one end of a buffer column. In the take-out box, the sliding blocks in the sliding grooves are matched with the first springs at the two ends, and part of energy is absorbed and buffered through elastic deformation of the springs during vibration; the bottom of the inner container box forms a damping structure through a connecting block and a damping spring, and vibration is further weakened. The series of design can prevent the food from being damaged and scattered due to strenuous vibration, guarantee the complete quality of the food in distribution and improve the dining experience.

Description

Technical Field

[0001] This invention belongs to the technical field of temperature control equipment for food delivery, and specifically relates to a battery-driven alumina ceramic heating food delivery box insulation device. Background Technology

[0002] The battery-powered alumina ceramic heated takeout box is an innovative device meticulously designed for the food delivery industry. It utilizes an advanced battery power system and high-performance alumina ceramic as its core heating element, generating heat quickly and stably. Simultaneously, the device cleverly integrates a highly efficient insulation structure, forming a powerful synergy between active heating and passive insulation. During delivery, regardless of changes in the external environment, it effectively maintains the food inside the box at a suitable temperature, ensuring that every bite is piping hot and tastes as good as new, significantly improving the quality of takeout service.

[0003] Currently, existing food delivery boxes on the market have significant shortcomings. Firstly, they lack anti-collision design, making them highly susceptible to spillage during delivery if they encounter bumps or collisions, impacting the dining experience. Secondly, their heat preservation performance is inadequate for long-distance delivery. Because they use insulation materials such as EPP and pearl cotton, they can only slow down heat loss, typically keeping food warm for no more than 60 minutes. This means that food often arrives cold, failing to meet consumer needs. Summary of the Invention

[0004] To address the problems in related technologies, this invention proposes a battery-driven alumina ceramic heating takeaway box insulation device to overcome the aforementioned technical problems in existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a battery-driven alumina ceramic heating takeaway box insulation device. This device integrates high-efficiency heating, intelligent temperature control, reliable power supply, and excellent shock absorption performance, making it suitable for keeping food warm during takeaway delivery. Its overall structure includes core components such as an alumina ceramic heating module, a battery power supply module, an intelligent temperature control module, a heat dissipation module, and the takeaway box. The takeaway box has a carefully designed sliding groove inside, with a sliding block slidably connected within the groove. Both ends of the sliding block are securely fixed with one end of a first spring, and the other end of the first spring is fixedly installed on the inner wall of the groove, forming an elastic buffer structure. A buffer post is also fixedly installed at one end of the sliding block, and the other end of the buffer post is fixedly installed on the outer wall of the inner liner, which is cleverly positioned inside the takeaway box. A ceramic substrate is fixedly installed at the bottom of the inner liner. Two connecting blocks are fixedly installed at the bottom of the ceramic substrate. One end of a connecting rod is rotatably installed on each of the two connecting blocks, and the other end of the connecting rod is rotatably installed on a movable block. The movable block is slidably connected to the fixed rod. A shock-absorbing spring is provided between the two movable blocks, which together constitute the shock absorption system of the inner liner, effectively protecting the food inside from the impact of bumps.

[0006] Furthermore, the fixing rod is securely installed inside the takeout box, providing a stable sliding track for the moving block. The shock-absorbing spring is cleverly fitted onto the fixing rod, saving space while ensuring the uniformity and reliability of the shock absorption effect.

[0007] Furthermore, the alumina ceramic heating module, as the core heating unit, includes at least two high-performance alumina ceramic heating plates. These heating plates utilize a high-purity alumina ceramic substrate with a finely printed silver-palladium electrode layer on the surface, ensuring excellent conductivity and heat resistance. They have a wide rated operating temperature range and moderate heating power, meeting the heat preservation requirements of various foods. The alumina ceramic heating plates are firmly fixed to the ceramic substrate using a high-temperature resistant ceramic adhesive. The ceramic substrate has precise positioning slots, enabling accurate assembly and electrical isolation of the alumina ceramic heating plates, thus improving the safety and stability of the device.

[0008] Furthermore, the battery power supply module includes a lithium battery pack, a battery management system (BMS), and a charging interface. The lithium battery pack uses high-performance ternary lithium batteries connected in series, offering large capacity and stable rated voltage, providing long-lasting and reliable power support for the device. The BMS integrates overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection, and temperature protection functions, enabling real-time monitoring of battery status to ensure safe battery use. The charging interface uses a Type-C fast charging interface, supporting high-speed charging and compatible with vehicle chargers, facilitating user charging of the device in various scenarios.

[0009] Furthermore, the intelligent temperature control module includes a temperature sensor, a microcontroller (MCU), and a touch control panel. The temperature sensor, employing a high-precision NTC thermistor, is embedded in the inner wall of the inner container, enabling real-time temperature data acquisition with an accuracy of ±℃. The microcontroller presets multiple temperature ranges and precisely adjusts the power supply current to the alumina ceramic heating module using pulse width modulation (PWM) technology to achieve closed-loop temperature control, ensuring the food remains at a suitable temperature. The touch control panel, located on the outside of the delivery box, features a power switch, temperature range selection buttons, and a power indicator light, providing simple and intuitive operation, allowing users to easily check the device status and make adjustments.

[0010] Furthermore, the heat dissipation module is used to achieve uniform heat diffusion, ensuring a consistent temperature throughout the inner chamber. It includes a heat-spreading aluminum plate, honeycomb heat dissipation fins, and thermal grease. The heat-spreading aluminum plate is made of high-quality aluminum alloy with a moderate thickness, and is tightly bonded to the heating surface of the alumina ceramic heating plate via thermal grease. The thermal grease has a high thermal conductivity, effectively improving heat transfer efficiency. The honeycomb heat dissipation fins are integrally formed on the side of the heat-spreading aluminum plate away from the heating plate. The fin height and honeycomb aperture are rationally designed, effectively expanding the heat dissipation area and promoting uniform heat distribution. In addition, the surface of the heat-spreading aluminum plate is coated with a high-temperature resistant and corrosion-resistant coating, improving the service life and stability of the device.

[0011] Furthermore, the takeout box is rotatably equipped with an insulated cover, and a spring buckle is provided between the insulated cover and the takeout box, which makes it convenient for users to quickly open and close the insulated cover, while ensuring the tightness of the insulated cover when closed, effectively preventing heat loss.

[0012] Furthermore, the inner liner is fixedly installed with a first partition and a second partition, which divide the interior of the inner liner into three independent storage compartments, making it convenient for users to classify and store food according to type and insulation requirements, thus improving the practicality and convenience of the device.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This takeout box's insulation device features a highly efficient shock absorption system. The sliding block within the internal groove of the takeout box works in conjunction with the first springs at both ends to absorb and buffer some of the vibration energy when subjected to shocks or collisions during delivery, through the elastic deformation of the springs. Simultaneously, the bottom of the inner box, through a shock-absorbing structure composed of connecting blocks, connecting rods, moving blocks, and shock-absorbing springs, further weakens the impact of vibration, effectively reducing the vibration amplitude of the inner box. This series of shock-absorbing designs prevents food inside the inner box from being damaged or spilled due to severe vibration, ensuring the integrity and quality of the food during delivery and providing consumers with a better dining experience.

[0014] 2. The intelligent temperature control module and the alumina ceramic heating module work together to achieve precise and stable temperature control. A high-precision NTC thermistor temperature sensor collects real-time temperature data from the inner liner, while the microcontroller presets four temperature ranges. Pulse width modulation (PWM) technology precisely adjusts the power supply current to the alumina ceramic heating module, forming a closed-loop temperature control system. This design allows the takeout box to maintain a stable temperature within a suitable range, such as 55-75℃, based on the different food insulation requirements, ensuring both the taste and quality of the food while meeting diverse user insulation needs.

[0015] 3. The takeout box features a rational overall structural layout, fully considering ease of use. The rotating insulated lid with spring-loaded buckles allows for quick and easy opening and closing, ensuring a tight seal when closed to effectively prevent heat loss. The inner liner is divided into three independent compartments by a first and second partition, allowing users to categorize and store food according to type and insulation requirements for easy access and management. Furthermore, a touch control panel on the outside of the takeout box integrates the power switch, temperature setting selection, and power indicator, facilitating user operation and monitoring of the device's status, greatly enhancing ease of use.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the takeout box of the present invention; Figure 3 Cross-sectional view of the takeaway box of the present invention Figure 1 ; Figure 4 This is an enlarged schematic diagram of point A in the present invention; Figure 5 Cross-sectional view of the takeaway box of the present invention Figure 2 ; Figure 6 This is an exploded view of some parts of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Delivery box; 2. Slide rail; 3. Sliding block; 4. First spring; 5. Buffer column; 6. Inner liner; 7. Connecting block; 8. Connecting rod; 9. Moving block; 10. Fixed rod; 11. Shock-absorbing spring; 12. Ceramic substrate; 13. Positioning slot; 14. Touch control panel; 15. Temperature sensor; 16. Insulation cover; 17. Spring buckle; 18. First partition; 19. Second partition; 20. Placement box; 21. Alumina ceramic heating plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0021] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements 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 the invention.

[0022] Please see Figures 1-6 As shown, this invention is a battery-driven alumina ceramic heating takeaway box insulation device. This device integrates high-efficiency insulation, intelligent control, and convenient operation, providing a reliable solution for food insulation during takeaway delivery. It includes an alumina ceramic heating module, a battery power supply module, an intelligent temperature control module, a heat dissipation module, and a takeaway box 1. The takeaway box 1 has a carefully designed sliding groove 2 inside, with a sliding block 3 slidably connected inside the groove 2. Both ends of the sliding block 3 are securely fixed with one end of a first spring 4, and the other end of the first spring 4 is fixedly installed on the inner wall of the groove 2, forming an elastic buffer structure. A buffer post 5 is also fixedly installed on one end of the sliding block 3, and the other end of the buffer post 5 is fixedly installed on the outer wall of the inner liner 6. The inner liner 6 is cleverly positioned inside the takeaway box 1, effectively protecting the food inside from external impacts. A ceramic substrate 12 is fixedly installed at the bottom of the inner liner 6. Two connecting blocks 7 are fixedly installed at the bottom of the ceramic substrate 12. One end of a connecting rod 8 is rotatably installed on each of the two connecting blocks 7. The other end of the connecting rod 8 is rotatably installed on a movable block 9. The movable block 9 is slidably connected to the fixed rod 10. A shock-absorbing spring 11 is provided between the two movable blocks 9, which together constitute the shock absorption system of the inner liner.

[0023] The working principle of the battery-driven alumina ceramic heating takeaway box insulation device proposed in this invention is as follows: When the takeaway box is subjected to vibration or collision during delivery, the sliding block 3 inside the slide groove 2 of the takeaway box 1 will slide within the slide groove 2 due to external force. At this time, the first spring 4 installed at both ends of the sliding block 3 plays a role. The first spring 4, with one end fixed to the sliding block 3 and the other end fixed to the inner wall of the slide groove 2, will be stretched or compressed as the sliding block 3 moves. The first spring 4 absorbs and buffers part of the vibration energy through its own elastic deformation, reducing the direct impact of vibration on subsequent structures.

[0024] During its sliding motion, the sliding block 3 drives the buffer column 5 fixed to it to move. The other end of the buffer column 5 is fixed to the outer wall of the inner liner 6, thus transmitting vibrations to the inner liner 6. However, a shock absorption system is provided at the bottom of the inner liner 6 to further reduce the impact of vibrations. Two connecting blocks 7 are fixed on the ceramic substrate 12 at the bottom of the inner liner 6. Each connecting block 7 has one end of a connecting rod 8 rotatably mounted on it, and the other end of the connecting rod 8 is rotatably mounted on a moving block 9, which is slidably connected to a fixed rod 10. When the inner liner 6 is vibrated, it drives the connecting block 7 to move, causing the connecting rod 8 to rotate, which in turn pushes the moving block 9 to slide on the fixed rod 10. The shock-absorbing spring 11 between the two moving blocks 9 is stretched or compressed as the moving blocks 9 move relative to each other. The shock-absorbing spring 11 uses its own elastic restoring force to absorb and buffer the vibration energy again, thereby effectively reducing the vibration amplitude of the inner liner 6 and protecting the food inside the inner liner 6 from severe vibration damage.

[0025] In terms of heat preservation, the battery power supply module provides power to the alumina ceramic heating module. The alumina ceramic heating module starts working and generates heat, which is transferred to the ceramic substrate 12. The ceramic substrate 12 then evenly transfers the heat to the inner liner 6, heating and keeping the food inside the inner liner 6 warm. Simultaneously, the heat dissipation module plays a role in distributing the heat generated by the alumina ceramic heating module more evenly around the inner liner 6, preventing localized overheating or undercooling and improving the heat preservation effect.

[0026] The intelligent temperature control module monitors the temperature inside the inner chamber 6 in real time and feeds this information back to the alumina ceramic heating module. When the temperature inside the inner chamber 6 is lower than the set value, the intelligent temperature control module controls the alumina ceramic heating module to increase its heating power and raise the temperature inside the inner chamber 6. When the temperature reaches or exceeds the set value, the intelligent temperature control module controls the alumina ceramic heating module to reduce its heating power or even stop heating to maintain a stable temperature inside the inner chamber 6 and ensure that the food is always in a suitable temperature environment.

[0027] In one embodiment, the fixing rod 10 is securely fixed inside the takeout box 1, providing a stable sliding track for the moving block 9. The shock-absorbing spring 11 is cleverly fitted onto the fixing rod 10, saving space and ensuring the uniformity and reliability of the shock absorption effect, effectively absorbing and dispersing vibration energy, and protecting the food inside the inner box 6.

[0028] In one embodiment, the alumina ceramic heating module, as the core heating unit, includes at least two high-performance alumina ceramic heating plates 21. The alumina ceramic heating plate 21 uses a 95% high-purity alumina ceramic substrate with a finely printed silver-palladium electrode layer on its surface, ensuring excellent conductivity and heat resistance. Its rated operating temperature range is 90-130℃, and its heating power is 18-28W / plate, meeting the heat preservation requirements of different foods. The alumina ceramic heating plate 21 is firmly fixed to the ceramic substrate 12 using a high-temperature resistant ceramic adhesive. The ceramic substrate 12 has precise positioning slots 13, achieving precise assembly and electrical isolation of the alumina ceramic heating plate 21, improving the safety and stability of the device.

[0029] In one embodiment, the battery power supply module includes a high-performance lithium battery pack, a smart battery management system (BMS), and a convenient charging interface. The lithium battery pack uses 18650 ternary lithium batteries connected in series, with a large capacity ranging from 8000-15000mAh and a stable rated voltage of 12V, providing long-lasting and reliable power support for the device. The battery management system integrates overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection, and temperature protection functions, enabling real-time monitoring of battery status to ensure safe battery use. The charging interface uses a Type-C fast charging interface, supporting 120W fast charging and compatible with vehicle chargers, allowing users to quickly charge the device in various scenarios.

[0030] In one embodiment, the intelligent temperature control module includes a high-precision temperature sensor 15, an intelligent microcontroller (MCU), and an intuitive touch control panel 14. The temperature sensor 15 uses an NTC thermistor, embedded in the inner wall of the inner liner 6, and can collect temperature data in real time with an accuracy of ±1℃. The microcontroller has four preset heat preservation temperature ranges: 55-60℃, 60-65℃, 65-70℃, and 70-75℃. It precisely adjusts the power supply current of the alumina ceramic heating module using pulse width modulation (PWM) technology to achieve closed-loop temperature control, ensuring that the food is always kept at a suitable temperature. The touch control panel 14 is located on the outside of the takeaway box and includes a power switch, temperature range selection buttons, and a power indicator light. It is simple and intuitive to operate, allowing users to easily check the device status and make adjustments.

[0031] In one embodiment, the heat dissipation module described above is used to achieve uniform heat diffusion, ensuring consistent temperature across all parts of the inner chamber 6. It includes a heat-dissipating aluminum plate, honeycomb heat dissipation fins, and high-efficiency thermal grease. The heat-dissipating aluminum plate is made of high-quality 6061 aluminum alloy with a moderate thickness ranging from 3-5mm. It is tightly bonded to the heating surface of the alumina ceramic heating plate 21 using thermal grease. The thermal grease has a high thermal conductivity, ≥3.8W / (m·K), effectively improving heat transfer efficiency. The honeycomb heat dissipation fins are integrally formed on the side of the heat-dissipating aluminum plate away from the heating plate. The fin height and honeycomb aperture are rationally designed, ranging from 12-18mm and 8-12mm respectively, effectively expanding the heat dissipation area and promoting uniform heat distribution. Furthermore, the surface of the heat-dissipating aluminum plate is coated with a high-temperature resistant and corrosion-resistant coating, improving the service life and stability of the device.

[0032] In one embodiment, the takeaway box 1 is rotatably mounted with an insulated cover 16. A spring clip 17 is provided between the insulated cover 16 and the takeaway box 1, which facilitates the user to quickly open and close the insulated cover 16, while ensuring the tightness of the insulated cover 16 when closed, effectively preventing heat loss and maintaining a stable temperature inside the inner box 6.

[0033] In one embodiment, the inner liner 6 is provided with a first partition 18 and a second partition 19 fixedly installed inside. The first partition 18 and the second partition 19 divide the interior of the inner liner 6 into three independent storage boxes 20, which makes it convenient for users to classify and store food according to its type and insulation requirements.

[0034] The working principle of the battery-driven alumina ceramic heating takeaway box insulation device proposed in this invention is as follows: a sliding block 3 is slidably connected in a groove 2 inside the takeaway box 1, and a fixed rod 10 is securely installed inside the takeaway box 1, providing a stable sliding track for the moving block 9. When the takeaway box is subjected to vibration or collision, the sliding block 3 slides in the groove 2, and the first springs 4 at both ends of it are stretched or compressed, absorbing part of the vibration energy through elastic deformation. The sliding block 3 drives the buffer column 5, transmitting the vibration to the inner box 6. On the ceramic substrate 12 at the bottom of the inner box 6, two connecting blocks 7 move with the inner box 6, causing the rotatably connected connecting rod 8 to push the moving block 9 to slide on the fixed rod 10. The shock-absorbing spring 11 sleeved on the fixed rod 10 is stretched or compressed with the relative movement of the moving block 9, effectively absorbing and dispersing the vibration energy, reducing the vibration amplitude of the inner box 6, and protecting the food inside the inner box 6.

[0035] The battery power supply module powers the alumina ceramic heating module. The lithium battery pack consists of 18650 ternary lithium batteries connected in series, with a capacity between 8000-15000mAh and a rated voltage of 12V, providing long-lasting power. The alumina ceramic heating module, as the core heating unit, includes at least two high-performance alumina ceramic heating plates 21. These plates use a 95% high-purity alumina ceramic substrate with a silver-palladium electrode layer printed on the surface. The rated operating temperature range is 90-130℃, and the heating power is 18-28W per plate. The alumina ceramic heating plates 21 are fixed to the ceramic substrate 12, which has positioning slots 13, using a high-temperature resistant ceramic adhesive, achieving precise assembly and electrical isolation.

[0036] The vapor chamber cooling module ensures uniform heat dissipation. The vapor chamber aluminum plate is made of high-quality 6061 aluminum alloy, 3-5mm thick, and is tightly bonded to the 21 heating surfaces of the alumina ceramic heating plate using thermally conductive silicone grease with a thermal conductivity ≥3.8W / (m·K), improving heat transfer efficiency. Honeycomb-shaped heat dissipation fins are integrally formed on the side of the vapor chamber aluminum plate away from the heating plate, with a fin height of 12-18mm and a honeycomb aperture of 8-12mm, expanding the heat dissipation area and promoting uniform heat distribution. The surface of the vapor chamber aluminum plate is coated with a high-temperature resistant and corrosion-resistant coating, improving the device's service life and stability.

[0037] The intelligent temperature control module monitors and adjusts the temperature in real time. A high-precision temperature sensor 15, using an NTC thermistor, is embedded in the inner wall of the inner casing 6, with an accuracy of ±1℃, collecting temperature data in real time. The intelligent microcontroller MCU has four preset insulation temperature ranges: 55-60℃, 60-65℃, 65-70℃, and 70-75℃. It precisely adjusts the power supply current of the alumina ceramic heating module using pulse width modulation (PWM) technology to achieve closed-loop temperature control. The touch control panel 14 is located on the outside of the takeaway box and includes a power switch, temperature range selection buttons, and a power indicator light for convenient operation and status monitoring.

[0038] The takeout box 1 is equipped with a rotating insulated lid 16. A spring clip 17 is provided between the insulated lid 16 and the takeout box 1 for easy and quick opening and closing, ensuring a tight seal when closed to prevent heat loss. The inner liner 6 is fixedly installed with a first partition 18 and a second partition 19, dividing the interior of the inner liner 6 into three independent storage compartments 20, allowing users to store food according to type and insulation requirements.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 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.

[0040] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery-driven alumina ceramic heating takeaway box insulation device, comprising an alumina ceramic heating module, a battery power supply module, an intelligent temperature control module, a heat dissipation module, and a takeaway box (1), characterized in that: The takeaway box (1) has a sliding groove (2) inside. A sliding block (3) is slidably connected inside the sliding groove (2). One end of a first spring (4) is fixedly installed at both ends of the sliding block (3). The other end of the first spring (4) is fixedly installed on the inner wall of the sliding groove (2). One end of a buffer column (5) is fixedly installed on the sliding block (3). The other end of the buffer column (5) is fixedly installed on the outer wall of the inner liner (6). The inner liner (6) is located inside the takeaway box (1). A ceramic substrate (12) is fixedly installed at the bottom of the inner liner (6). Two connecting blocks (7) are fixedly installed at the bottom of the ceramic substrate (12). One end of a connecting rod (8) is rotatably installed on each of the two connecting blocks (7). The other end of the connecting rod (8) is rotatably installed on a moving block (9). The moving block (9) is slidably connected to a fixed rod (10). A shock-absorbing spring (11) is provided between the two moving blocks (9).

2. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 1, characterized in that, The fixing rod (10) is fixedly installed inside the takeaway box (1), and the shock-absorbing spring (11) is sleeved on the fixing rod (10).

3. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 2, characterized in that, The alumina ceramic heating module is the core heating unit, including at least two alumina ceramic heating plates (21). The alumina ceramic heating plate (21) is made of 95% high-purity alumina ceramic substrate, with a silver-palladium electrode layer printed on the surface. The rated operating temperature is 90℃-130℃, and the heating power is 18W / plate-28W / plate. The alumina ceramic heating plate (21) is fixed to the ceramic substrate (12) by a high-temperature resistant ceramic adhesive. The ceramic substrate (12) is provided with a positioning slot (13).

4. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 3, characterized in that, The battery power supply module includes a lithium battery pack, a battery management system, and a charging interface. The lithium battery pack is composed of 18650 ternary lithium batteries connected in series, with a capacity of 8000mAh-15000mAh and a rated voltage of 12V. The battery management system integrates overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, and temperature protection functions, and monitors the battery status in real time. The charging interface adopts a Type-C fast charging interface, supports 120W fast charging, and is compatible with vehicle chargers.

5. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 4, characterized in that, The intelligent temperature control module includes a temperature sensor (15), a microcontroller, and a touch operation panel (14). The temperature sensor (15) is an NTC thermistor. The temperature sensor (15) is embedded in the inner wall of the inner liner (6). The accuracy of the temperature data collected is ±1℃. The microcontroller presets four heat preservation temperature ranges, including 55-60℃, 60-65℃, 65-70℃, and 70-75℃. The power supply current of the alumina ceramic heating module is adjusted by pulse width modulation technology. The touch operation panel (14) is located on the outside of the takeaway box and has a power switch, a temperature range selection key, and a power indicator light.

6. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 1, characterized in that, The heat dissipation module is used to achieve uniform heat diffusion. It includes a heat dissipation aluminum plate, honeycomb heat dissipation fins and thermal grease. The heat dissipation aluminum plate is made of 6061 aluminum alloy with a thickness of 3mm-5mm. It is tightly attached to the heating surface of the alumina ceramic heating plate (21) by thermal grease. The thermal conductivity of the thermal grease is ≥3.8W / (m·K). The honeycomb heat dissipation fins are integrally formed on the side of the heat dissipation aluminum plate away from the heating plate. The fin height is 12mm-18mm and the honeycomb hole diameter is 8mm-12mm. The surface of the heat dissipation aluminum plate is sprayed with a high temperature resistant and anti-corrosion coating.

7. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 6, characterized in that, The takeaway box (1) is rotatably fitted with an insulated cover (16), and a spring buckle (17) is provided between the insulated cover (16) and the takeaway box (1).

8. The battery-driven alumina ceramic heating takeaway box insulation device according to claim 1, characterized in that, The inner liner (6) is fixedly installed with a first partition (18) and a second partition (19), which divide the interior of the inner liner (6) into three storage boxes (20).

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