Intelligent constant-temperature hot-water bag and manufacturing method thereof

Abstract

The invention discloses an intelligent constant-temperature hot-water bag and a manufacturing method thereof.The hot-water bag comprises a water bag body, the water bag body is provided with a water storage cavity used for containing hot water, a heat conduction material layer, a phase change material layer and a flexible protection layer, and the heat conduction material layer, the phase change material layer and the flexible protection layer are sequentially stacked outwards from the wall of the water storage cavity; a heat insulation groove is formed in the outer surface of the water bag main body; the temperature sensing module comprises a sensor main body embedded in the bottom of the heat insulation groove, a temperature sensing part which penetrates through the phase change material layer and the heat conduction material layer from the sensor main body and is exposed in the water storage cavity, and an electric connection part exposed in the heat insulation groove; the intelligent controller is detachably connected to the heat insulation groove and electrically connected with the electrical connection part of the temperature sensing module; and the power supply module is used for supplying power to the temperature sensing module, acquiring the water temperature information sensed by the temperature sensing module and executing reminding operation at least based on the water temperature information. And a safe, long-acting and interactive constant-temperature warm-keeping function is realized.

Description

Technical Field

[0001] This application relates to the field of hot water bottle technology, and in particular to an intelligent constant temperature hot water bottle and its manufacturing method. Background Technology

[0002] Traditional hot water bottles are mainly divided into two types: ordinary water-filled and electric heating. Ordinary water-filled hot water bottles rely on the sensible heat of the hot water itself for heating, and their temperature drops continuously over time, making it difficult to maintain a stable temperature. This results in users having to frequently change the hot water, leading to a poor user experience. While electric heating hot water bottles do have a heating function, they generally pose safety hazards.

[0003] Currently available products, to ensure safety, are strictly prohibited from use while charging; they must be fully charged and disconnected before use. This prevents them from achieving continuous and intelligent temperature control. Once the power is off, the temperature continues to drop, making it difficult to maintain a stable heating effect. Furthermore, under prolonged use and external pressure, the internal heating elements and batteries are prone to leakage, short circuits, and even explosions, posing a threat to human safety. Summary of the Invention

[0004] This application provides an intelligent constant temperature hot water bag and its manufacturing method to solve the technical problems of current hot water bags having safety hazards or inconvenience in use.

[0005] In a first aspect, this application provides a smart constant-temperature hot water bag, comprising: The water bag body has a water storage cavity for containing hot water, and a heat-conducting material layer, a phase change material layer, and a flexible protective layer stacked sequentially from the wall of the water storage cavity outwards. The water bag body is provided with a water inlet and a sealing and heat-insulating cap for sealing the water inlet, and the outer surface of the water bag body is provided with a heat-insulating groove; the phase change material layer encapsulates a phase change material with a phase change temperature of 40℃~50℃. The temperature sensing module includes a sensor body embedded in the bottom of the heat insulation groove, a temperature sensing part that passes through the phase change material layer and the thermally conductive material layer from the sensor body and is exposed in the water storage cavity, and an electrical connection part exposed in the heat insulation groove. The intelligent controller is detachably connected to the heat insulation groove and electrically connected to the electrical connection part of the temperature sensing module; it is used to power the temperature sensing module, acquire the water temperature information sensed by the temperature sensing module, and perform an alert operation based at least on the water temperature information.

[0006] In some of these embodiments, the temperature sensing element is thermally isolated from the phase change material layer, the thermally conductive material layer, and the flexible protective layer by a heat-insulating material.

[0007] In some embodiments, the water storage cavity is provided with a protective cover, which is placed over one end of the temperature sensing part and fixedly connected to the heat-conducting material layer. The protective cover has a hollow structure.

[0008] In some embodiments, the heat-insulating groove is embedded with an identification unit that stores the thermal property parameters of the phase change material. The intelligent controller includes an ambient temperature sensor and a processor. The processor is used to acquire the water temperature information, ambient temperature information, and the thermal property parameters of the phase change material, calculate the estimated remaining heat preservation time of the hot water bag, and perform reminder operations.

[0009] In some embodiments, the intelligent controller is connected to the heat insulation groove via a snap-fit ​​structure, a magnetic structure, or a threaded structure.

[0010] In some embodiments, the thermal conductivity of the thermally conductive material layer is greater than 0.5 W / (m·K), and the interfacial thermal resistance between the phase change material layer and the thermally conductive material layer is less than 0.01 m²·K / W.

[0011] Secondly, this application also provides a method for manufacturing an intelligent constant-temperature hot water bottle, comprising the following steps: Fabricating the basic bag body: Hot pressing the edges and preset positions of the thermally conductive surface material and the flexible surface material, leaving a material injection notch and forming a preset position hot pressing area to obtain the basic bag body; Fabrication of the first bag body: On a base bag body, a first positioning hole is punched out in the preset hot-pressing area; a heat-insulating groove with an embedded temperature sensing module is bonded to the outer surface of the flexible surface material, and one end of the temperature sensing part of the temperature sensing module passes through the first positioning hole, sealing both ends of the first positioning hole; phase change material is injected into the injection notch, and then the injection notch is hot-pressed to seal, thus obtaining the first bag body; To make a second bag: On another base bag, punch out a second positioning hole in the preset hot-pressing area; perform edge hot pressing on the lower edge of the water inlet and the second positioning hole; inject phase change material into the injection notch, and then hot-press and seal the injection notch to obtain the second bag; Preparation of the water bag body: The first bag body and the second bag body are subjected to edge hot pressing to form a water storage cavity, thereby obtaining the water bag body, wherein the heat-conducting surface material of the first bag body and the heat-conducting surface material of the second bag body are arranged facing each other; Assemble the hot water bag: The intelligent controller is detachably assembled into the heat insulation groove on the main body of the hot water bag to obtain an intelligent constant temperature hot water bag.

[0012] In some embodiments, the step of bonding the heat-insulating groove containing the temperature sensing module to the outer surface of the flexible surface material, and passing one end of the temperature sensing part of the temperature sensing module through the first positioning hole, and sealing both ends of the first positioning hole, includes: The heat insulation material is wrapped around the other end of the temperature sensing part, and one end of the temperature sensing part is passed through the first positioning hole to the outer surface of the heat-conducting surface material, while the other end of the temperature sensing part is inside the first positioning hole. Seal both ends of the first positioning hole with sealant; The heat insulation groove is bonded to the outer surface of the flexible material using sealant.

[0013] In some embodiments, after sealing both ends of the first positioning hole with sealant, the method further includes: The protective cover is bonded to the heat-conducting surface material using sealant and is placed over one end of the temperature-sensing part.

[0014] Thirdly, this application also provides a method for operating an intelligent constant-temperature hot water bag, applied to an intelligent controller, wherein the intelligent controller is electrically connected to a temperature sensing module, and the method includes the following steps: In response to the electrical connection with the electrical connection part of the temperature sensing module, the intelligent controller is triggered to start and the identification unit on the water bag body is identified to read the phase change material thermophysical parameters corresponding to the water bag body; Acquire ambient temperature information and real-time water temperature information sensed by the temperature sensing module; Based on the real-time water temperature information, the ambient temperature information, and the thermophysical parameters of the phase change material, the estimated remaining heat preservation time of the hot water bag is calculated, and the real-time water temperature information and / or the estimated remaining heat preservation time are displayed on the display module on the intelligent controller. If the estimated remaining heat preservation time is less than the preset time, a preset reminder operation instruction is executed. The preset reminder operation instruction is used to control the reminder module on the intelligent controller to output a tactile reminder signal, a visual reminder signal, or an auditory reminder signal.

[0015] Compared with the prior art, this application has the following beneficial effects: Through an architecture that separates physical energy storage from intelligent sensing, a safe, long-lasting, and interactive constant-temperature insulation function is achieved. During use, hot water is injected into the storage chamber. Heat is efficiently transferred through the thermally conductive material layer to the phase change material layer. The phase change material absorbs and stores a large amount of latent heat within the 40℃~50℃ range, rapidly lowering the water temperature to a comfortable human body temperature and creating a long-term constant-temperature platform, significantly extending the insulation time. The temperature sensing module's sensing element extends directly into the storage chamber, accurately sensing the real-time water temperature. Its sensor body is embedded in the bottom of the heat-insulating groove, isolated from other layers by the insulation material, ensuring measurement accuracy. The detachable intelligent controller automatically starts upon connection, powering the sensor and acquiring water temperature information. Based on a built-in algorithm, it can display the temperature and estimated remaining insulation time in real time. When the water temperature falls below a preset threshold or the insulation time is insufficient, it reminds the user to add hot water through vibration, sound, and light. The water bag body has no electrical components, completely eliminating the risk of electric leakage. The intelligent controller is independently powered and reusable, ensuring safety while achieving precise temperature control and intelligent interaction at low cost. It effectively solves the problems of short heat preservation time, unknown temperature, and charging safety hazards of traditional hot water bags. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an intelligent constant temperature hot water bag shown in an embodiment of this application; Figure 2 This is a cross-sectional structural diagram of an intelligent constant temperature hot water bag shown in an embodiment of this application; Figure 3 This is a schematic flowchart illustrating the manufacturing method of an intelligent constant temperature hot water bag according to an embodiment of this application; Figure 4 This is a flowchart illustrating the working method of the intelligent constant temperature hot water bag according to an embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of 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.

[0018] See Figure 1 , Figure 1 A schematic diagram of the structure of an intelligent constant-temperature hot water bag provided in an embodiment of this application. The intelligent constant-temperature hot water bag includes: The water bag body 1 has a water storage cavity 11 for containing hot water, and a heat-conducting material layer 12, a phase change material layer 13, and a flexible protective layer 14 stacked sequentially from the wall of the water storage cavity outwards. The water bag body 1 is provided with a water inlet 15 and a sealing and heat-insulating cover 16 for sealing the water inlet 15, and the outer surface of the water bag body 1 is provided with a heat-insulating groove; the phase change material layer 13 encapsulates a phase change material with a phase change temperature of 40℃~50℃. The temperature sensing module 2 includes a sensor body embedded in the bottom of the heat insulation groove, a temperature sensing part 21 that passes through the phase change material layer and the thermal conductive material layer from the sensor body and is exposed in the water storage cavity, and an electrical connection part exposed in the heat insulation groove. The intelligent controller 3 is detachably connected to the heat insulation groove and electrically connected to the electrical connection part of the temperature sensing module; it is used to power the temperature sensing module, acquire the water temperature information sensed by the temperature sensing module, and perform an alert operation based at least on the water temperature information.

[0019] In this embodiment, the water bag body 1 is the core heat storage component. The inner thermally conductive material layer (such as silicone or thermally conductive rubber) is in direct contact with the water storage cavity, responsible for efficiently transferring heat from the hot water to the outside. The middle phase change material layer encapsulates a phase change material (such as paraffin-based or inorganic salt material) with a phase change temperature of 40℃~50℃. This material absorbs a large amount of latent heat when heated to its melting point, rapidly reducing the high-temperature hot water to a comfortable temperature for the human body. During the cooling process, it slowly releases the stored heat, forming a long-term constant temperature platform and significantly extending the heat retention time. The outer flexible protective layer provides protection and insulation. The heat insulation groove is located on the outer surface of the water bag, providing a mounting base for the intelligent controller and reducing heat conduction to the control components.

[0020] Temperature sensing module 2 is the key to achieving accurate sensing. Its temperature sensing part extends directly into the water storage cavity through the multi-layer structure, ensuring that the measured water temperature truly reflects the thermal state inside the bag. The sensor body is embedded in the bottom of the heat insulation groove and is thermally isolated from each layer of material through heat insulation wrapping, avoiding the temperature of the phase change material layer from interfering with the measurement accuracy. The electrical connection part is exposed in the groove to establish an electrical path with the controller.

[0021] The intelligent controller 3 is a detachable module, fixed to the heat-insulating groove by clips or magnets. Upon connection, the controller powers the sensor and reads the real-time water temperature, displaying the current temperature and estimated remaining heat preservation time on the screen based on a built-in algorithm. When the water temperature falls below a preset threshold or the heat preservation time is insufficient, it alerts the user to add hot water through vibration, sound, and light. Throughout the entire operation, the water bag itself is completely unpowered, eliminating the risk of electric leakage. The intelligent controller is independently powered and reusable, achieving a low-cost, intelligent interactive experience with knowable temperature, measurable heat preservation time, and controllable status, solving the technical challenges of traditional hot water bags such as short heat preservation time, unknowable temperature, and charging safety hazards.

[0022] In some embodiments, the temperature sensing element is thermally isolated from the phase change material layer, the thermally conductive material layer, and the flexible protective layer by a heat-insulating material.

[0023] In this embodiment, the insulation material is a low thermal conductivity material (such as a silicone sleeve, aerogel, or sealant) wrapped around the temperature sensing element's penetration path. This embodiment uses an insulation layer at the point where the temperature sensing element passes through the phase change material layer, the thermally conductive material layer, and the flexible protective layer to block heat conduction from each layer to the temperature sensing element. This prevents the temperature plateau characteristics during the phase change process of the phase change material layer from interfering with the temperature sensing element's measurement of the actual water temperature in the storage chamber. This ensures that the data measured by the temperature sensing module only reflects the hot water temperature inside the storage chamber, eliminating interlayer temperature interference and providing accurate water temperature information for the intelligent controller. This, in turn, guarantees the accuracy and reliability of the remaining insulation time calculation and low-temperature alert functions.

[0024] In some embodiments, the water storage cavity is provided with a protective cover 4, which covers one end of the temperature sensing part and is fixedly connected to the heat-conducting material layer. The protective cover has a hollow structure.

[0025] In this embodiment, the protective cover is a protective component fixed to the inner surface of the thermally conductive material layer and covering the end of the temperature sensing part. Its perforated structure refers to the multiple through holes or mesh-like openings on the cover. The protective cover physically isolates the temperature sensing part from the hot water flowing in the water storage chamber and any impurities that may be present, preventing the temperature sensing part from being accidentally touched, bent, or damaged during use or water filling. The perforated design ensures that hot water can freely contact the temperature sensing part through the through holes without affecting the temperature measurement response speed and accuracy. This ensures the long-term reliability of the sensor while maintaining the real-time performance and accuracy of temperature measurement, extending the product's lifespan.

[0026] In some embodiments, the heat insulation groove is embedded with an identification unit that stores the thermal property parameters of the phase change material. The intelligent controller includes an ambient temperature sensor and a processor. The processor is used to acquire the water temperature information, ambient temperature information and the thermal property parameters of the phase change material, calculate the estimated remaining heat preservation time of the hot water bag, and perform a reminder operation.

[0027] In this embodiment, the identification unit is an electronic tag or coded element that stores the thermophysical properties of the phase change material (such as phase change temperature and latent heat value); the ambient temperature sensor is used to sense the ambient temperature; and the processor is the core computing unit of the intelligent controller. After the intelligent controller is connected, the processor reads the phase change material characteristic parameters obtained from the identification unit, combines them with real-time water temperature and ambient temperature data, and uses the built-in thermodynamic model to dynamically calculate the estimated remaining insulation time. This achieves accurate prediction of the remaining time, avoids the deviation of estimation based solely on water temperature, and provides advance reminders to the user when time is insufficient, significantly improving the level of intelligent management and user experience.

[0028] In some embodiments, the intelligent controller is connected to the heat insulation groove via a snap-fit ​​structure, a magnetic structure, or a threaded structure.

[0029] In this embodiment, the controller is securely installed in the groove through physical locking, magnetic adsorption, or screw tightening, while ensuring that its electrical connection part is in close contact with the temperature sensing module to establish an electrical path. This enables quick installation and removal of the controller, facilitating user separation (the water bag can be washed independently) and reuse of the controller; the stable connection ensures the reliability of data transmission and power supply stability, improving the overall ease of use and structural reliability of the product.

[0030] In some embodiments, the thermal conductivity of the thermally conductive material layer is greater than 0.5 W / (m·K), and the interfacial thermal resistance between the phase change material layer and the thermally conductive material layer is less than 0.01 m²·K / W.

[0031] In this embodiment, thermal conductivity is a physical indicator measuring the heat transfer capability of a material; a value greater than 0.5 W / (m·K) indicates that the thermally conductive material layer has good thermal conductivity. Interfacial thermal resistance is the resistance to heat transfer through the interface between two material layers; a value less than 0.01 m²·K / W indicates a tight contact and high heat transfer efficiency between the phase change material layer and the thermally conductive material layer. This embodiment uses a high thermal conductivity to ensure rapid heat transfer from the water storage cavity to the phase change material layer, while low interfacial thermal resistance reduces heat loss during interlayer transfer. This achieves efficient heat transfer from hot water to the phase change material, enabling the phase change material to rapidly absorb and store heat, improving the stability and heat preservation time of the constant temperature platform, and ensuring that the water temperature sensed by the temperature sensing module is highly consistent with the actual thermal state inside the bag.

[0032] See Figure 3 , Figure 3 A flowchart illustrating a method for manufacturing an intelligent constant-temperature hot water bottle provided in this application. The method includes steps S301 to S305, detailed below: Step S301, making the basic bag body: perform edge hot pressing and preset position hot pressing on the heat-conducting surface material and the flexible surface material, reserve the injection gap and form the preset position hot pressing area to obtain the basic bag body.

[0033] In this step, a basic bag is pre-prepared as a universal substrate for subsequent processing. A preliminary sealing profile is formed by hot-pressing the edges of the thermally conductive surface material (corresponding to the thermally conductive material layer) and the flexible surface material (corresponding to the flexible protective layer); simultaneously, hot-pressing is performed at preset locations to form a reinforced sealing zone in a designated area, reserving an accurate position for subsequent sensor installation; the reserved injection notch provides a channel for subsequent phase change material infusion. This embodiment utilizes a hot-pressing process to achieve molecular-level fusion of two heterogeneous materials at the edges and preset locations, forming a basic bag with a specific cavity structure, laying the structural foundation for subsequent functional integration. This enables the mass production of standard substrates, ensuring product consistency and production efficiency.

[0034] Step S302, making the first bag body: On a basic bag body, punch out the first positioning hole of the preset hot pressing area; attach the heat insulation groove with the embedded temperature sensing module to the outer surface of the flexible surface material, and pass one end of the temperature sensing part of the temperature sensing module through the first positioning hole to seal both ends of the first positioning hole; inject phase change material into the injection notch, and then hot press the injection notch to seal it to obtain the first bag body.

[0035] In this step, a temperature sensing module and a phase change material layer are integrated into the first bag body to form a semi-finished product with sensing capabilities. The first positioning hole is punched to provide a precise through-pass for the temperature sensing element; the heat-insulating groove with the embedded temperature sensing module is bonded to the outer surface of the flexible material, which both fixes the sensor body and provides a mounting base for the subsequent intelligent controller; the temperature sensing element passes through the positioning hole and both ends are sealed to ensure complete waterproofing and leak-proofness at the penetration point; finally, the phase change material is injected and the injection notch is sealed to form the phase change material layer. This embodiment, by installing the sensor first and then injecting the phase change material, exposes the temperature sensing element directly to the future water storage cavity space, while the sealing treatment ensures the integrity of the multi-layer structure. This achieves seamless embedding of the temperature sensing function into the bag structure, and the heat insulation design between the sensor and the phase change material layer avoids mutual interference, ensuring accurate temperature measurement.

[0036] Step S303, making the second bag body: On another base bag body, punch out the second positioning hole of the preset position hot pressing area; perform edge hot pressing on the lower edge of the water inlet and the second positioning hole; inject phase change material into the injection notch, and then hot press to seal the injection notch to obtain the second bag body.

[0037] In this step, after punching the second positioning hole, the lower edge of the water inlet is hot-pressed to the positioning hole to form an integrated, sealed connection between the water inlet and the bag body; similarly, phase change material is injected to form an insulation layer. This embodiment uses hot pressing between the water inlet and the positioning hole to make the water inlet an integral part of the bag body, ensuring no leakage during long-term use. This constructs another side of the bag body with water injection functionality, and both sides of the bag body contain the same phase change material layer, achieving a symmetrical distribution of insulation performance.

[0038] Step S304, preparing the water bag body: the first bag body and the second bag body are subjected to edge hot pressing to form a water storage cavity, thereby obtaining the water bag body, wherein the heat-conducting surface material of the first bag body and the heat-conducting surface material of the second bag body are arranged facing each other.

[0039] In this step, the first and second bags are combined into one, forming a complete water storage cavity. The heat-conducting surfaces of the two bags are brought together facing each other using edge heat pressing; the space between them forms the water storage cavity. The heat-conducting surfaces on the inner sides of each bag directly enclose the cavity, forming its walls. Heat can be efficiently transferred to the phase change material layer through the heat-conducting material layers on both sides, achieving simultaneous heat storage on both sides. This maximizes the heat exchange area, significantly improving the heat absorption efficiency and heat retention time of the phase change material; simultaneously, it ensures that the temperature sensing element is located within the water storage cavity for accurate temperature measurement.

[0040] Step S305, Assemble the hot water bag: Detachably assemble the intelligent controller into the heat insulation groove on the body of the hot water bag to obtain an intelligent constant temperature hot water bag.

[0041] In this embodiment, the controller is detachably installed in the heat-insulating groove, establishing an electrical connection. It communicates with the temperature sensing module via controller contacts to obtain water temperature information and issue intelligent reminders. This achieves a safe architecture where the water bag body is electricity-free and the intelligent functions are detachable, facilitating user cleaning and reuse of the controller while completely eliminating electrical safety hazards.

[0042] In some embodiments, step S302, which involves bonding the heat-insulating groove containing the temperature sensing module to the outer surface of the flexible surface material, and passing one end of the temperature-sensing part of the temperature sensing module through the first positioning hole and sealing both ends of the first positioning hole, includes: The heat insulation material is wrapped around the other end of the temperature sensing part, and one end of the temperature sensing part is passed through the first positioning hole to the outer surface of the heat-conducting surface material, while the other end of the temperature sensing part is inside the first positioning hole. Seal both ends of the first positioning hole with sealant; The heat insulation groove is bonded to the outer surface of the flexible material using sealant.

[0043] In this embodiment, firstly, heat-insulating material is wrapped around the section of the temperature sensing part located within the first positioning hole to achieve thermal insulation between the temperature sensing part and the phase change material layer and the thermally conductive material layer, avoiding interlayer temperature interference with measurement accuracy. Subsequently, one end of the temperature sensing part is passed through the positioning hole to the outer surface of the thermally conductive surface material, exposing its end to the future water storage cavity space, while the other end remains inside the positioning hole. Next, sealant is used to fill and seal both ends of the positioning hole, completely sealing all gaps in the through path to ensure that the multi-layer structure does not leak during hot pressing and use. Finally, the heat-insulating groove with the sensor body embedded is bonded to the outer surface of the flexible surface material with sealant, so that the sensor body and the electrical connection part are stably fixed, while the heat-insulating groove further reduces the influence of the external environment on the sensor.

[0044] This embodiment uses heat insulation wrapping and double sealing to ensure the accuracy of temperature measurement (the temperature sensing part only senses the temperature of the water storage chamber) and achieve a highly reliable waterproof seal. The fixed heat insulation groove provides a stable mounting base for the intelligent controller, making detachable connection possible, and improving the overall sensing accuracy, safety and structural reliability of the product.

[0045] In some embodiments, after sealing both ends of the first positioning hole with sealant, the method further includes: The protective cover is bonded to the heat-conducting surface material using sealant and is placed over one end of the temperature-sensing part.

[0046] In this embodiment, a protective cover is placed over the end of the temperature sensing part exposed in the water storage cavity, and it is fixedly connected to the heat-conducting surface material with sealant, so that the end of the temperature sensing part is completely covered; the hollow structure of the protective cover allows hot water to flow freely, ensuring that the temperature sensing part can still sense changes in water temperature in real time.

[0047] See Figure 4 , Figure 4 This application provides a flowchart illustrating the working method of an intelligent constant-temperature hot water bag. The method is applied to an intelligent controller, which is electrically connected to a temperature sensing module. The method includes steps S401 to S404, detailed below: Step S401: In response to the electrical connection with the electrical connection part of the temperature sensing module, the intelligent controller is triggered to start and the identification unit on the water bag body is identified to read the phase change material thermophysical parameters corresponding to the water bag body.

[0048] In this step, the intelligent controller automatically starts in response to its electrical connection with the temperature sensing module, eliminating the need for manual power-on by the user. Simultaneously, it identifies identification units (such as RFID tags, QR codes, or resistive coding) on ​​the water bag body and automatically reads the corresponding phase change material thermophysical parameters (such as phase change temperature and latent heat value). This achieves plug-and-play compatibility between the controller and different water bags, ensuring that subsequent calculations are based on accurate material properties.

[0049] Step S402: Obtain ambient temperature information and real-time water temperature information sensed by the temperature sensing module.

[0050] In this step, the ambient temperature is obtained through the built-in ambient temperature sensor, and the real-time water temperature information is obtained through the temperature sensing module, providing a dual data foundation for thermal status assessment.

[0051] Step S403: Based on the real-time water temperature information, the ambient temperature information, and the thermophysical parameters of the phase change material, calculate the estimated remaining heat preservation time of the hot water bag, and display the real-time water temperature information and / or the estimated remaining heat preservation time on the display module of the intelligent controller.

[0052] In this step, the real-time water temperature, ambient temperature, and thermophysical parameters of the phase change material are substituted into the built-in thermodynamic model to dynamically calculate the estimated remaining heat preservation time, and the water temperature and remaining time are displayed on the screen in real time. This transforms the abstract feeling of hot and cold into intuitive digital information, allowing users to clearly understand the status of the hot water bottle.

[0053] Step S404: If the estimated remaining heat preservation time is less than the preset time, execute the preset reminder operation instruction. The preset reminder operation instruction is used to control the reminder module on the intelligent controller to output a tactile reminder signal, a visual reminder signal, or an auditory reminder signal.

[0054] In this step, when the estimated remaining heat preservation time is lower than a preset threshold, the controller reminds the user to replenish hot water in time through vibration, sound and light, etc., to avoid discomfort caused by sudden cooling. This embodiment realizes an intelligent upgrade from passive perception to active prediction. Users can keep track of the hot water bottle's status without frequent touching; the automatic recognition function improves the product's versatility and ease of use; dual data fusion calculation ensures prediction accuracy; and the tiered reminder mechanism optimizes the user experience, comprehensively solving the pain point of traditional hot water bottles not knowing when they will cool down.

[0055] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit the scope of protection of this application. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application for those skilled in the art.

Claims

1. A smart constant-temperature hot water bottle, characterized in that, include: The water bag body has a water storage cavity for containing hot water, and a heat-conducting material layer, a phase change material layer, and a flexible protective layer stacked sequentially from the wall of the water storage cavity outwards. The water bag body is provided with a water inlet and a sealing and heat-insulating cap for sealing the water inlet, and the outer surface of the water bag body is provided with a heat-insulating groove; the phase change material layer encapsulates a phase change material with a phase change temperature of 40℃~50℃. The temperature sensing module includes a sensor body embedded in the bottom of the heat insulation groove, a temperature sensing part that passes through the phase change material layer and the thermally conductive material layer from the sensor body and is exposed in the water storage cavity, and an electrical connection part exposed in the heat insulation groove. The intelligent controller is detachably connected to the heat insulation groove and electrically connected to the electrical connection part of the temperature sensing module; it is used to power the temperature sensing module, acquire the water temperature information sensed by the temperature sensing module, and perform an alert operation based at least on the water temperature information.

2. The intelligent constant temperature hot water bag as described in claim 1, characterized in that, The temperature sensing element is thermally isolated from the phase change material layer, the thermally conductive material layer, and the flexible protective layer by a heat-insulating material.

3. The intelligent constant temperature hot water bag as described in claim 2, characterized in that, The water storage cavity is equipped with a protective cover, which is placed over one end of the temperature sensing part and is fixedly connected to the heat-conducting material layer. The protective cover has a hollow structure.

4. The intelligent constant temperature hot water bag as described in claim 1, characterized in that, The heat insulation groove is embedded with an identification unit that stores the thermal property parameters of the phase change material. The intelligent controller includes an ambient temperature sensor and a processor. The processor is used to acquire the water temperature information, ambient temperature information and the thermal property parameters of the phase change material, calculate the estimated remaining heat preservation time of the hot water bag, and perform reminder operations.

5. The intelligent constant temperature hot water bag as described in claim 1, characterized in that, The intelligent controller is connected to the heat insulation groove via a snap-fit ​​structure, a magnetic structure, or a threaded structure.

6. The intelligent constant temperature hot water bag as described in claim 1, characterized in that, The thermal conductivity of the thermally conductive material layer is greater than 0.5 W / (m·K), and the interfacial thermal resistance between the phase change material layer and the thermally conductive material layer is less than 0.01 m²·K / W.

7. A method for manufacturing an intelligent constant-temperature hot water bag as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Fabricating the basic bag body: Hot pressing the edges and preset positions of the thermally conductive surface material and the flexible surface material, leaving a material injection gap and forming a preset position hot pressing area to obtain the basic bag body; Fabrication of the first bag body: On a base bag body, a first positioning hole is punched out in the preset hot-pressing area; a heat-insulating groove with an embedded temperature sensing module is bonded to the outer surface of the flexible surface material, and one end of the temperature sensing part of the temperature sensing module passes through the first positioning hole, sealing both ends of the first positioning hole; phase change material is injected into the injection notch, and then the injection notch is hot-pressed to seal, thus obtaining the first bag body; To make a second bag: On another base bag, punch out a second positioning hole in the preset hot-pressing area; perform edge hot pressing on the lower edge of the water inlet and the second positioning hole; inject phase change material into the injection notch, and then hot-press and seal the injection notch to obtain the second bag; Preparation of the water bag body: The first bag body and the second bag body are subjected to edge hot pressing to form a water storage cavity, thereby obtaining the water bag body, wherein the heat-conducting surface material of the first bag body and the heat-conducting surface material of the second bag body are arranged facing each other; Assemble the hot water bag: The intelligent controller is detachably assembled into the heat insulation groove on the main body of the hot water bag to obtain an intelligent constant temperature hot water bag.

8. The method for manufacturing the intelligent constant-temperature hot water bag as described in claim 7, characterized in that, The step of bonding the heat-insulating groove containing the temperature sensing module to the outer surface of the flexible surface material, and passing one end of the temperature sensing part of the temperature sensing module through the first positioning hole, and sealing both ends of the first positioning hole, includes: The heat insulation material is wrapped around the other end of the temperature sensing part, and one end of the temperature sensing part is passed through the first positioning hole to the outer surface of the heat-conducting surface material, while the other end of the temperature sensing part is inside the first positioning hole. Seal both ends of the first positioning hole with sealant; The heat insulation groove is bonded to the outer surface of the flexible material using sealant.

9. The method for manufacturing the intelligent constant-temperature hot water bag as described in claim 8, characterized in that, After sealing both ends of the first positioning hole with sealant, the method further includes: The protective cover is bonded to the heat-conducting surface material using sealant and is placed over one end of the temperature-sensing part.

10. A method for operating the intelligent constant-temperature hot water bag as described in any one of claims 1 to 6, characterized in that, Applied to an intelligent controller, wherein the intelligent controller is electrically connected to a temperature sensing module, the working method includes the following steps: In response to the electrical connection with the electrical connection part of the temperature sensing module, the intelligent controller is triggered to start and the identification unit on the water bag body is identified to read the phase change material thermophysical parameters corresponding to the water bag body; Acquire ambient temperature information and real-time water temperature information sensed by the temperature sensing module; Based on the real-time water temperature information, the ambient temperature information, and the thermophysical parameters of the phase change material, the estimated remaining heat preservation time of the hot water bag is calculated, and the real-time water temperature information and / or the estimated remaining heat preservation time are displayed on the display module on the intelligent controller. If the estimated remaining heat preservation time is less than the preset time, a preset reminder operation instruction is executed. The preset reminder operation instruction is used to control the reminder module on the intelligent controller to output a tactile reminder signal, a visual reminder signal, or an auditory reminder signal.

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