A double-temperature-zone phase-change based power supply vacuum cup

Abstract

The utility model provides a kind of power supply vacuum cup based on double temperature zone phase change, it is related to thermally insulated container technical field.The utility model provides a kind of power supply vacuum cup based on double temperature zone phase change, by being provided with the first phase change heat-absorbing layer and the second phase change heat-absorbing layer with different phase change temperature on body and base, on the one hand, the temperature difference of both stable difference just constructs constant temperature difference, provides stable driving force for temperature difference generator;On the other hand, the first phase change heat-absorbing layer uses the synergistic cooperation of foamed metal carrier and phase change material, significantly improves heat transfer efficiency, realizes rapid cooling;Thirdly, by storing the electric energy converted from heat energy in energy storage module, mobile device can be powered, meet the dual needs of user drinking water and mobile device emergency charging.Therefore, the utility model provides a kind of power supply vacuum cup based on double temperature zone phase change has the advantages that cooling speed is fast and temperature difference stability is good, can take into account the demand of fast temperature control and power supply.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation container technology, specifically to a power supply thermal insulation cup based on dual-temperature zone phase change. Background Technology

[0002] Insulated cups are common daily necessities. Currently, insulated cups on the market can be divided into three categories: traditional insulated cups, phase-change cooling insulated cups, and smart temperature display insulated cups. Traditional insulated cups rely on a vacuum layer or other insulation layers to slow heat loss. While they can maintain the temperature, they cannot actively cool it down; hot substances need to cool naturally to a suitable consumption temperature, which takes a very long time. Phase-change cooling insulated cups achieve heat absorption and cooling by filling the interlayer with liquid phase-change materials. However, because liquid phase-change materials generally have low thermal conductivity, the cooling speed is slow. Smart temperature display insulated cups use battery-powered electronic modules to provide temperature reminders, but they require frequent charging or battery replacement, resulting in a poor user experience and being environmentally unfriendly. Therefore, there is an urgent need for an insulated cup that can simultaneously achieve "rapid temperature control" and "no external power supply required."

[0003] Patent document CN202310537169.X proposes a self-powered system using a thermoelectric generator, which utilizes the hot water inside the cup as the hot end and the ambient temperature as the cold end to drive the thermoelectric generator to produce electricity. However, because the output efficiency of the thermoelectric generator is strictly dependent on the stability of the temperature difference between the hot and cold ends, when the thermos cup is actively cooled through phase change or other means, the temperature of the hot end will inevitably continue to drop, causing the temperature difference between the hot and cold ends to decrease sharply. This leads to a sharp drop in the power generation efficiency of the thermoelectric generator, ultimately resulting in an unstable power supply system. Furthermore, the heat from the hot water inside the cup is not effectively converted into electrical energy for storage, resulting in energy waste. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a power-supply thermos cup based on dual-temperature-zone phase change. The power-supply thermos cup based on dual-temperature-zone phase change has advantages such as fast cooling speed, good temperature difference stability, and the ability to supply power externally, thus meeting the needs of rapid temperature control and power supply.

[0005] The specific technical solution of this utility model is as follows: In a first aspect, this utility model provides a power-supply insulated cup based on dual-temperature-zone phase change, comprising a body and a base connected to the lower end of the body. The body includes an outer shell and an inner liner disposed inside the outer shell, and a first phase change heat-absorbing layer. The first phase change heat-absorbing layer is disposed between the inner liner and the outer shell. The base includes a bottom cover and an electronic module disposed inside the bottom cover, and a second phase change heat-absorbing layer. The first phase change heat-absorbing layer includes a first foam metal carrier and a first phase change material filling the pores of the first foam metal carrier. The second phase change heat-absorbing layer includes a shell layer, a second foam metal carrier, and a second phase change material. The body and the second phase change material are located within the shell layer. The second phase change material fills the pores of the second foam metal carrier. The phase change temperature of the first phase change material is greater than that of the second phase change material. The electronic module includes a thermoelectric generator, a boost module, and an energy storage module. The hot end contact surface of the thermoelectric generator is attached to the outer surface of the inner liner, and the cold end contact surface of the thermoelectric generator is attached to the top surface of the second phase change heat absorption layer. The output end of the thermoelectric generator is electrically connected to the input end of the boost module, and the output end of the boost module is electrically connected to the energy storage module. The energy storage module is used to supply power to external devices.

[0006] In one possible implementation, the phase transition temperature of the first phase change material is 40-60 °C, and the phase transition temperature of the second phase change material is 30-50 °C.

[0007] In one possible implementation, the first phase change material and the second phase change material are organic phase change materials or inorganic phase change materials. The organic phase change material is selected from at least one of paraffin wax, fatty acids and polyols, and the inorganic phase change material is selected from hydrated salts or low-melting-point alloys.

[0008] In one possible implementation, the shell includes a shell body and a shell cover plate covering the shell body. A plurality of heat dissipation fins are provided in the shell body and / or the shell cover plate. The second foam metal carrier and the second phase change material are disposed in the gaps between the plurality of heat dissipation fins. The cold end contact surface of the thermoelectric generator is in contact with the upper surface of the shell cover plate.

[0009] In one possible implementation, the first foam metal carrier and the second foam metal carrier are at least one of copper foam and aluminum foam.

[0010] In one possible implementation, a vacuum insulation layer is provided on the inner wall of the outer shell, and the first phase change heat absorption layer is disposed between the inner liner and the vacuum insulation layer.

[0011] In one possible implementation, the energy storage module includes a charge / discharge chip, a rechargeable battery, a protection chip, and an output interface. The VIN pin of the charge / discharge chip is electrically connected to the output terminal of the boost module, and the positive terminal of the rechargeable battery is connected to the BAT pin of the charge / discharge chip. + Pins and the BAT of the protection chip + The pins are electrically connected, with the negative terminal of the rechargeable battery connected to the BAT pin of the protection chip. - The pins are electrically connected, with the OUT pin of the charging / discharging chip electrically connected to the output interface, and the GND pin of the protection chip grounded.

[0012] Furthermore, the rechargeable battery is disposed in a battery compartment inside the bottom cover, and the battery compartment is provided with vibration-damping foam.

[0013] Furthermore, the rechargeable battery is a lithium battery, and the output interface is a USB interface.

[0014] In one possible implementation, the electronic module further includes a temperature sensor, a microcontroller, and an indicator. The boost module includes a first-stage DC-DC converter and a second-stage DC-DC converter. The first output terminal of the thermoelectric generator is electrically connected to the input terminal of the first-stage DC-DC converter. The output terminal of the first-stage DC-DC converter is electrically connected to the input terminals of the microcontroller, the indicator, and the temperature sensor, respectively. The second output terminal of the thermoelectric generator is electrically connected to the input terminal of the second-stage DC-DC converter. The output terminal of the second-stage DC-DC converter is electrically connected to the input terminal of the energy storage module. The microcontroller is also electrically connected to the indicator and the temperature sensor. The probe of the temperature sensor is fixed on the outer wall of the inner liner.

[0015] Furthermore, the indicating device is an LED light, the temperature sensor is an NTC thermistor, the output voltage of the first-stage DC-DC converter is 3-4 V, and the output voltage of the second-stage DC-DC converter is 5-6 V.

[0016] The positive and progressive effects of this utility model are as follows: This invention provides a thermos cup with power supply based on dual-temperature zone phase change. By setting a first phase change heat-absorbing layer and a second phase change heat-absorbing layer with different phase change temperatures on the body and base, the stable temperature difference between the two layers creates a constant temperature difference, providing a stable driving force for a thermoelectric generator. Furthermore, the first phase change heat-absorbing layer, located between the inner liner and the outer shell, utilizes a first foam metal carrier and a first phase change material in synergy, significantly improving heat transfer efficiency and achieving rapid cooling. Moreover, by storing the electrical energy converted from heat in an energy storage module, it can power mobile devices, meeting the dual needs of users for drinking water and emergency charging of mobile devices. Therefore, the thermos cup with power supply based on dual-temperature zone phase change provided by this invention has the advantages of rapid cooling, good temperature difference stability, and the ability to supply power, simultaneously meeting the needs of rapid temperature control and power supply. Attached Figure Description

[0017] Figure 1 This is the main view of the temperature-controlled thermos cup based on dual-temperature-zone phase change in Example 1.

[0018] Figure 2 for Figure 1 A schematic diagram of the CC cross section of a thermos cup with power supply and temperature control based on dual-temperature zone phase change.

[0019] Figure 3 for Figure 2 A schematic diagram of the DD cross-section of a thermos cup with power supply and temperature control based on dual-temperature zone phase change.

[0020] Figure 4 This is an unfolded diagram of the temperature-controlled thermos cup based on dual-temperature-zone phase change in Example 1.

[0021] Figure 5 This is a front view of the base of the thermos cup with power supply and temperature control based on dual-temperature zone phase change in Example 1.

[0022] Figure 6 for Figure 5 AA cross-sectional view of the central base.

[0023] Figure 7 This is an unfolded view of the base of the thermos cup with power supply and temperature control based on dual-temperature zone phase change in Example 1.

[0024] Figure 8 This is a top view of the base of the thermos cup with power supply and temperature control based on dual-temperature zone phase change in Example 1.

[0025] Figure Labels 1-Outer shell, 2-Inner liner, 3-Vacuum insulation layer, 4-First phase change heat absorption layer, 5-Top cover, 6-Cup handle, 7-Bottom cover, 8-Second phase change heat absorption layer, 9-Electronic module, 11-Shell body, 12-Shell cover plate, 13-Heat dissipation fins, 14-Sponge, 91-Thermoelectric generator, 92-Printed circuit board, 93-USB interface, 94-Energy storage module, 95-LED light. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are described in detail below. It should be noted that the following embodiments are only used to illustrate the implementation methods and typical parameters of this utility model, and are not intended to limit the parameter range described in this utility model. Reasonable variations derived therefrom are still within the protection scope of the claims of this utility model.

[0027] It should be noted that the endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0029] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] Unless otherwise defined, all terms, symbols, and other scientific terms used herein are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In some instances, terms having a conventionally understood meaning are defined herein for clarification or convenience of reference; such definitions should not be construed as indicating a significant difference from conventional understanding in the art. The technical methods described or referenced herein are generally well understood by those skilled in the art and employed through conventional methods. Unless otherwise stated, the use of commercially available kits, reagents, and instruments shall be performed according to the manufacturer's instructions and parameters.

[0031] Terminology Explanation: Phase change materials (PCMs) are materials that store or release heat by utilizing the property that substances need to absorb or release a large amount of heat when they undergo a phase change. They have advantages such as high heat storage density, small equipment size, high thermal efficiency, and heat release being a constant temperature process.

[0032] Thermoelectric power generation: Thermoelectric power generation is a technology that uses thermoelectric materials to directly convert heat energy into electrical energy. Its working principle is to generate an electric current by creating a temperature difference across the two ends of a thermoelectric material. The specific technical solution of this utility model is as follows: In a first aspect, this utility model provides a power-supply insulated cup based on dual-temperature-zone phase change, comprising a body and a base connected to the lower end of the body. The body includes an outer shell and an inner liner disposed inside the outer shell, and a first phase change heat-absorbing layer. The first phase change heat-absorbing layer is disposed between the inner liner and the outer shell. The base includes a bottom cover and an electronic module disposed inside the bottom cover, and a second phase change heat-absorbing layer. The first phase change heat-absorbing layer includes a first foam metal carrier and a first phase change material filling the pores of the first foam metal carrier. The second phase change heat-absorbing layer includes a shell layer, a second foam metal carrier, and a second phase change material. The body and the second phase change material are located within the shell layer. The second phase change material fills the pores of the second foam metal carrier. The phase change temperature of the first phase change material is greater than that of the second phase change material. The electronic module includes a thermoelectric generator, a boost module, and an energy storage module. The hot end contact surface of the thermoelectric generator is attached to the outer surface of the inner liner, and the cold end contact surface of the thermoelectric generator is attached to the top surface of the second phase change heat absorption layer. The output end of the thermoelectric generator is electrically connected to the input end of the boost module, and the output end of the boost module is electrically connected to the energy storage module. The energy storage module is used to supply power to external devices.

[0033] This invention provides a power-operated thermos cup based on dual-temperature-zone phase change, achieving the dual effects of rapid cooling and stable temperature difference through the synergy of structural design, material properties, and heat transfer path. The core characteristic of phase change materials is their ability to absorb a large amount of latent heat during phase change (e.g., from solid to liquid), while maintaining the temperature near the phase change point. The first phase change heat-absorbing layer is located between the inner liner and the outer shell, directly wrapping the sides and body of the inner liner. Its large contact area with the inner liner allows for rapid absorption of heat released by the inner liner through thermal radiation and conduction. Furthermore, the first foam metal carrier within the first phase change heat-absorbing layer possesses excellent thermal conductivity, enabling rapid absorption of heat transferred from the inner liner. Through full contact with the first phase change material filling its pores, the heat is transferred to the first phase change material. The first phase change material absorbs the heat transferred by the first foam metal carrier through phase change. With the synergistic cooperation of the first foam metal carrier and the phase change material, the contents of the inner liner are rapidly cooled to a suitable temperature. This invention provides a thermos cup based on dual-temperature-zone phase change technology. Through the "constant-temperature characteristics of phase change materials + dual-temperature-zone gradient design," it achieves stable inner liner temperature and stable temperature difference across the thermoelectric generator, ensuring reliable power supply. The constant-temperature characteristics of the phase change material suppress inner liner temperature fluctuations. During the phase change process, the temperature of the phase change material remains near the phase change point, effectively buffering temperature fluctuations. When heat from the external environment enters the inner liner or the contents release heat, the phase change material absorbs this heat and reaches its phase change temperature. It then further maintains its own temperature and the temperature around the inner liner near its phase change point by melting and absorbing heat. If the inner liner temperature drops too quickly due to heat dissipation, the phase change material replenishes heat through solidification, preventing the inner liner temperature from becoming too low. The second phase change material in the second phase change heat absorption layer also maintains low-temperature stability through phase change, serving as a "constant-temperature cold source" to control the cold end temperature of the thermoelectric generator, preventing drastic fluctuations in the cold end temperature due to environmental changes or heat absorption saturation. The power generation efficiency of a thermoelectric generator depends on the temperature difference between its hot and cold ends. This invention provides a thermos cup based on dual-temperature-zone phase change, which ensures long-term temperature stability through a temperature gradient design using a dual-phase change layer. Because the phase change temperature of the first phase change material is higher than that of the second phase change material, a stable temperature gradient is formed between them. Furthermore, the isothermal characteristics of the dual-phase change layer ensure that the temperature difference between the hot and cold ends does not significantly decrease over time (e.g., during heat absorption), thus guaranteeing the temperature stability of the thermoelectric generator and enabling it to provide stable power for extended periods.

[0034] In summary, the synergistic effect of the above factors enables the dual-temperature-zone phase change-based power supply thermos cup provided by this utility model to have the advantages of fast cooling speed and good temperature difference stability, and can meet the needs of rapid temperature control and long-term continuous power supply.

[0035] In one possible implementation, the phase change temperature of the first phase change material is 40-60 °C, and the phase change temperature of the second phase change material is 30-50 °C. Since the temperature of 40-60 °C is close to the comfortable drinking temperature for the human body (around 55 °C), setting the phase change temperature of the first phase change material to 40-60 °C maintains a temperature difference of more than 40 °C between it and boiling water, resulting in a large heat absorption driving force that can quickly lower the temperature to a range suitable for the human body. The second phase change heat absorption layer serves as the cold end temperature control module of the thermoelectric generator. By limiting the heat absorption temperature of the second phase change material to 30-50 °C, a constant temperature difference ΔT of 10-30 °C can be formed between it and the first phase change material, thereby maintaining an efficient and stable operating condition for the power generation module.

[0036] In one possible implementation, the first and second phase change materials are either organic or inorganic phase change materials. The organic phase change material is selected from at least one of paraffin wax, fatty acids, and polyols, while the inorganic phase change material is selected from hydrated salts or low-melting-point alloys. The core advantages of organic phase change materials are high latent heat, small volume change during the phase change process, good chemical stability, and a wide selection of materials within the 30-60 °C range, enabling them to stably perform the main heat absorption and energy storage functions. The advantages of inorganic phase change materials are extremely high latent heat of phase change and a thermal conductivity that is generally higher than that of organic phase change materials, making them suitable for scenarios requiring rapid heat conduction and high-intensity heat absorption. Furthermore, inorganic phase change materials offer a wider selection in the high-temperature range (e.g., 50-60 °C), which can compensate for the insufficient stability of some organic phase change materials at high temperatures. Paraffin wax, fatty acids, and polyols are all high-latent-heat organic phase change materials; a unit mass of these organic phase change materials can absorb more heat, improving heat absorption capacity within a limited space and extending the temperature maintenance time. In addition to the advantages of high latent heat of phase transformation, hydrated salts and low-melting-point alloys also have good stability and can adapt to repeated phase transformation cycles and complex environments in thermos cups.

[0037] In one possible implementation, the shell layer includes a shell body and a shell cover plate covering the shell body. Multiple heat dissipation fins are disposed within the shell body and / or on the shell cover plate. The second foamed metal carrier and the second phase change material are disposed within the gaps between the multiple heat dissipation fins. The cold end contact surface of the thermoelectric generator is in contact with the upper surface of the shell cover plate. The heat dissipation fins form a three-dimensional structure through multiple sets of metal sheets, significantly expanding the effective contact area between the cold end of the thermoelectric generator and the second phase change heat absorption layer. This improves the temperature uniformity within the second phase change heat absorption layer, allowing the heat absorbed by the cold end of the thermoelectric generator to be transferred more quickly to the second phase change material through the heat dissipation fins. This prevents the temperature from rising due to heat accumulation at the cold end and helps maintain a stable temperature difference between the cold and hot ends.

[0038] In one possible implementation, the first foam metal carrier and the second foam metal carrier are at least one of copper foam and aluminum foam. Copper and aluminum are metals with excellent thermal conductivity in nature. The three-dimensional interconnected network formed by their foam structure can construct an efficient "heat conduction path," allowing heat to diffuse rapidly throughout the material system through the copper / aluminum skeleton, avoiding local overheating or heat transfer lag, and significantly improving the heat absorption / release rate of the phase change material.

[0039] In one possible implementation, a vacuum insulation layer is provided on the inner wall of the outer shell, and the first phase change heat absorption layer is disposed between the inner liner and the vacuum insulation layer. The vacuum insulation layer can effectively delay the transfer of heat to the external environment, which helps to extend the heat preservation / cold preservation time of the medium in the inner liner.

[0040] In one possible implementation, the energy storage module includes a charge / discharge chip, a rechargeable battery, a protection chip, and an output interface. The VIN pin of the charge / discharge chip is electrically connected to the output terminal of the boost module, and the positive terminal of the rechargeable battery is connected to the BAT pin of the charge / discharge chip. + Pins and the BAT of the protection chip + The pins are electrically connected, with the negative terminal of the rechargeable battery connected to the BAT pin of the protection chip. - The charging / discharging chip has its OUT pin electrically connected to the output interface, and the protection chip's GND pin is grounded. The charging / discharging chip converts the voltage output from the boost module to the voltage required by the rechargeable battery. The rechargeable battery stores excess energy from the thermoelectric generator and powers external mobile devices. The protection chip detects the battery voltage; whether charging or discharging, once a protection threshold is triggered, the protection chip immediately cuts off its own circuit, stopping current flow and protecting the battery. The output interface is used for direct connection to external mobile devices.

[0041] Furthermore, the rechargeable battery is housed in a battery compartment inside the bottom cover, and the inner wall of the battery compartment is lined with vibration-damping foam. Placing the rechargeable battery in the battery compartment with vibration-damping foam on the inner wall prevents damage from impacts when the thermos cup shakes or falls.

[0042] Furthermore, the rechargeable battery is a lithium battery, and the output interface is a USB interface. Lithium batteries have high energy density and can be made as small as a fingernail, easily fitting into the independent battery compartment at the bottom of a thermos. This saves space in the thermos while providing sufficient emergency charging capacity, perfectly meeting the miniaturization needs of portable thermoses. The USB interface is a universal charging interface for consumer electronics such as mobile phones, headphones, smartwatches, and power banks. Users do not need to purchase a dedicated data cable; they can use their everyday USB charging cable to connect to the energy storage module for charging, improving the versatility of the energy storage module.

[0043] In one possible implementation, the electronic module further includes a temperature sensor, a microcontroller, and an indicator. The boost module includes a first-stage DC-DC converter and a second-stage DC-DC converter. The first output terminal of the thermoelectric generator is electrically connected to the input terminal of the first-stage DC-DC converter. The output terminal of the first-stage DC-DC converter is electrically connected to the input terminals of the microcontroller, the indicator, and the temperature sensor, respectively. The second output terminal of the thermoelectric generator is electrically connected to the input terminal of the second-stage DC-DC converter. The output terminal of the second-stage DC-DC converter is electrically connected to the input terminal of the energy storage module. The microcontroller is also electrically connected to the indicator and the temperature sensor. The probe of the temperature sensor is fixed to the outer wall of the inner liner. The conversion efficiency of the DC-DC converter can reach over 85%, and using a DC-DC converter can minimize energy loss during voltage conversion. By using a first-stage DC-DC converter and a second-stage DC-DC converter, the electricity generated by the thermoelectric generator can be boosted to different voltages to meet the power needs of different electrical components.

[0044] Furthermore, the output voltage of the first-stage DC-DC converter is 3-4 V, the output voltage of the second-stage DC-DC converter is 5-6 V, the indicating device is an LED, and the temperature sensor is an NTC thermistor. First, the low-voltage energy generated by the thermoelectric generator is boosted to 3-4 V by the first-stage DC-DC converter. This 3-4 V is suitable for powering the microcontroller, indicating device, and temperature sensor. Then, the second-stage DC-DC converter further boosts the 3-4 V to 5-6 V, which is suitable for the power requirements of the lithium-ion battery. The LED, as an indicating device, features high brightness, fast response, and easy observation. The NTC thermistor features high sensitivity and fast response, especially in the range of room temperature to 100 °C, exhibiting good linearity and accurately capturing temperature changes. The microcontroller controls the LED's on / off state based on the temperature detected by the NTC thermistor.

[0045] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0046] This embodiment provides a temperature-controlled thermos cup based on dual-temperature-zone phase change power supply, such as... Figures 1-8 As shown.

[0047] The thermos cup based on dual-temperature zone phase change power supply and temperature control in this embodiment includes a body and a base. The base and body are connected by threads, allowing for unscrewing to inspect and replace internal components and phase change materials. The body includes an outer shell 1, an inner liner 2, a vacuum insulation layer 3, a first phase change heat absorption layer 4, a top cover 5, and a handle 6. The outer shell 1 is made of stainless steel, and the inner liner 2 is made of 0.4 mm thick 316 stainless steel. The vacuum insulation layer 3 is located on the inner wall of the outer shell 1, which can extend the water's heat preservation time and temperature difference stabilization time. The first phase change heat absorption layer 4 is located between the inner liner 2 and the vacuum insulation layer 3, used to absorb heat from the hot water in the inner liner 2, causing it to cool down rapidly. The top cover 5 is suitable for tightly sealing the upper ports of the inner liner 2 and the outer shell 1 to form a sealed structure. The upper end of the handle 6 is fixedly connected to the outer surface of the outer shell 1 to facilitate the removal of the thermos cup. The first phase change heat absorption layer 4 is made of a material with a density of 0.2 g / cm³. 3 The thermos is composed of a first copper foam carrier and a first paraffin wax with a melting point of 60 °C. The first paraffin wax fills the pores of the first copper foam carrier. The first copper foam carrier has good thermal conductivity and can quickly conduct heat from the water in the thermos. By fully contacting the first paraffin wax filled in the pores, it transfers heat to the first paraffin wax. The first paraffin wax absorbs the heat transferred by the first copper foam carrier. In other words, the synergistic effect of the first copper foam carrier and the first paraffin wax allows the water in the thermos to cool down quickly to a drinking temperature.

[0048] The base includes a bottom cover 7, a second phase change heat absorption layer 8, an electronic module 9, and a sponge 14. The second phase change heat absorption layer 8 consists of an aluminum alloy shell, several heat dissipation fins 13, and a density of 0.2 g / cm³. 3 The second copper foam carrier and the second paraffin wax with a melting point of 40 °C are used. The aluminum alloy shell includes a shell body 11 and a shell cover plate 12 covering the shell body 11. In this embodiment, a number of heat dissipation fins 13 are spaced apart inside the shell body 11. The heat dissipation fins 13 can more efficiently transfer the temperature of the cold end of the thermoelectric generator 91 to the second phase change heat absorption layer 8, which is more conducive to maintaining the temperature stability of the cold end of the thermoelectric generator 91. They are perpendicular to the bottom surface of the shell body 11. The second copper foam carrier is filled in the gaps formed by the number of heat dissipation fins 13. The second paraffin wax is filled in the pores of the second copper foam carrier. After the shell cover plate 12 is covered, the second phase change heat absorption layer 8 can be assembled. In other embodiments, the heat dissipation fins 13 can also be arranged on the shell cover plate 12, or arranged simultaneously inside the shell body 11 and on the shell cover plate 12. The sponge 14 is located at the bottom layer of the bottom cover 7, and the second phase change heat absorption layer is located on the upper surface of the sponge 14.

[0049] The electronic module 9 consists of a thermoelectric generator 91, a first-stage DC-DC converter, a microcontroller, an NTC thermistor, an LED lamp 95, a second-stage DC-DC converter, and an energy storage module 94. The hot end of the thermoelectric generator 91 is in close contact with the bottom surface of the inner liner 2, and the cold end of the thermoelectric generator 91 is in contact with the upper surface of the shell cover plate 12. Under the action of the first phase change heat absorption layer 4 and the second phase change heat absorption layer 8, the hot end and the cold end of the thermoelectric generator 91 can maintain a constant temperature difference for a long time. The first output terminal of the thermoelectric generator 91 is electrically connected to the input terminal of the first-stage DC-DC converter. The output terminal of the first DC-DC converter is electrically connected to the microcontroller, the NTC thermistor, and the LED lamp 95, respectively. The NTC thermistor and the LED lamp 95 are electrically connected to the microcontroller, and the probe of the NTC thermistor is fixed on the outer wall of the inner liner 2. The second output terminal of the thermoelectric generator 91 is electrically connected to the input terminal of the second-stage DC-DC converter. The output terminal of the second-stage DC-DC converter is electrically connected to the energy storage module 94. That is, the DC-DC converter first raises the voltage output by the thermoelectric generator 91 to 3-4 V through the first-stage DC-DC converter to power the microcontroller, the NTC thermistor, and the LED lamp 95, and then raises it to 5-6 V through the second-stage DC-DC converter to store the electrical energy in the energy storage module 94.

[0050] The energy storage module 94 consists of an IP5306 charge / discharge chip, a 500 mAh lithium-ion battery, an IP3005A protection chip, and a USB output interface. The VIN pin of the IP5306 charge / discharge chip is electrically connected to the output of the second-stage DC-DC converter. The positive terminal of the lithium-ion battery is connected to the BAT pin of the IP5306 charge / discharge chip. + Pins and BAT of IP3005A protection chip + Electrical connection: The negative terminal of the lithium-ion battery is connected to the BAT pin of the IP3005A protection chip. - The lithium-ion battery is housed in the battery compartment, which is lined with anti-vibration foam. The OUT pin of the IP5306 charge / discharge chip is electrically connected to the USB output interface, and the GND pin of the IP3005A protection chip is grounded. The NTC thermistor monitors the water temperature in the thermos in real time and transmits the signal to the microcontroller. The microcontroller controls the LED 95 to turn on and off based on the temperature signal transmitted by the NTC thermistor. In this embodiment, the LED 95 is set to turn on when the temperature detected by the NTC thermistor is ≥50 ℃, and to turn off when the temperature detected by the NTC thermistor is <50 ℃.

[0051] The embodiment demonstrates a cooling and power generation performance test of a temperature-controlled thermos cup based on dual-temperature-zone phase change. First, in the dual-temperature-zone phase change power supply temperature control thermos cup of the embodiment, after adding 100 ℃ hot water, the first phase change heat absorption layer absorbs the heat of the hot water within 3 minutes and lowers the water temperature to 50-60 ℃. At this time, the temperature difference between the inner liner temperature (50-60 ℃) and the ambient temperature (generally 25 ℃) drives the voltage generated by the thermoelectric generator. After being boosted by the first-stage DC-DC converter, it supplies the microcontroller, NTC thermistor and LED light 95. Another part of the electrical energy is boosted by the second-stage DC-DC converter and stored in the lithium-ion battery, and then used to power external devices through the USB interface.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A power-supply insulated cup based on dual-temperature-zone phase change, characterized in that, The device includes a main body and a base connected to the lower end of the main body. The main body includes an outer shell, an inner liner disposed inside the outer shell, and a first phase change heat-absorbing layer. The first phase change heat-absorbing layer is disposed between the inner liner and the outer shell. The base includes a bottom cover and an electronic module and a second phase change heat-absorbing layer disposed inside the bottom cover. The first phase change heat-absorbing layer includes a first foamed metal carrier and a first phase change material filling the pores of the first foamed metal carrier. The second phase change heat-absorbing layer includes a shell layer, a second foamed metal carrier, and a second phase change material. The second foamed metal carrier and the second phase change material are both located within... Within the shell, the second phase change material fills the pores of the second foam metal carrier. The phase change temperature of the first phase change material is greater than that of the second phase change material. The electronic module includes a thermoelectric generator, a boost module, and an energy storage module. The hot end contact surface of the thermoelectric generator is attached to the outer surface of the inner liner, and the cold end contact surface of the thermoelectric generator is attached to the top surface of the second phase change heat absorption layer. The output end of the thermoelectric generator is electrically connected to the input end of the boost module, and the output end of the boost module is electrically connected to the energy storage module. The energy storage module is used to supply power to external devices.

2. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, The phase transition temperature of the first phase change material is 40-60 ℃, and the phase transition temperature of the second phase change material is 30-50 ℃.

3. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, The first phase change material and the second phase change material are organic phase change materials or inorganic phase change materials. The organic phase change material is selected from at least one of paraffin, fatty acids and polyols, and the inorganic phase change material is selected from hydrated salts or low-melting-point alloys.

4. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, The shell includes a shell body and a shell cover plate covering the shell body. Multiple heat dissipation fins are provided in the shell body and / or the shell cover plate. The second foam metal carrier and the second phase change material are disposed in the gaps between the multiple heat dissipation fins. The cold end contact surface of the thermoelectric generator is attached to the upper surface of the shell cover plate.

5. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, The first foam metal carrier and the second foam metal carrier are at least one of copper foam and aluminum foam.

6. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, A vacuum insulation layer is provided on the inner wall of the outer shell, and the first phase change heat absorption layer is disposed between the inner liner and the vacuum insulation layer.

7. The power supply and insulation cup based on dual-temperature zone phase change according to claim 1, characterized in that, The energy storage module includes a charge / discharge chip, a rechargeable battery, a protection chip, and an output interface. The VIN pin of the charge / discharge chip is electrically connected to the output terminal of the boost module, and the positive terminal of the rechargeable battery is connected to the BAT pin of the charge / discharge chip. + Pins and the BAT of the protection chip + The pins are electrically connected, with the negative terminal of the rechargeable battery connected to the BAT pin of the protection chip. - The pins are electrically connected, with the OUT pin of the charging / discharging chip electrically connected to the output interface, and the GND pin of the protection chip grounded.

8. The power supply and insulation cup based on dual-temperature zone phase change according to claim 7, characterized in that, The rechargeable battery is located in the battery compartment inside the bottom cover, and the battery compartment is equipped with vibration-damping foam.

9. The power supply and insulation cup based on dual-temperature zone phase change according to claim 7, characterized in that, The rechargeable battery is a lithium battery, and the output interface is a USB interface.

10. The power supply thermos cup based on dual-temperature zone phase change according to any one of claims 1-7, characterized in that, The electronic module also includes a temperature sensor, a microcontroller, and an indicator. The boost module includes a first-stage DC-DC converter and a second-stage DC-DC converter. The first output terminal of the thermoelectric generator is electrically connected to the input terminal of the first-stage DC-DC converter. The output terminal of the first-stage DC-DC converter is electrically connected to the input terminals of the microcontroller, the indicator, and the temperature sensor, respectively. The second output terminal of the thermoelectric generator is electrically connected to the input terminal of the second-stage DC-DC converter. The output terminal of the second-stage DC-DC converter is electrically connected to the input terminal of the energy storage module. The microcontroller is also electrically connected to the indicator and the temperature sensor. The probe of the temperature sensor is fixed on the outer wall of the inner liner.

11. The power supply and insulation cup based on dual-temperature zone phase change according to claim 10, characterized in that, The indicator is an LED light, the temperature sensor is an NTC thermistor, the output voltage of the first-stage DC-DC converter is 3-4 V, and the output voltage of the second-stage DC-DC converter is 5-6 V.

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