Multifunctional water cup with temperature difference power generation hydrogen production, phase change energy storage and light absorption heating functions

Abstract

The invention discloses a multifunctional water cup with thermoelectric power generation hydrogen production, phase change energy storage and light absorption heating functions, relates to the technical field of thermoelectric power generation, and solves the problems that an existing water cup is single in function, and the use scene of a hydrogen-rich water cup is limited by a power supply. A light absorption coating is arranged on the inner side of the outer wall of a cup body; a thermoelectric power generation sheet is arranged outside the middle wall; a water storage cavity is formed in the inner wall, a phase change heat storage cavity is formed between the inner wall and the middle wall, and a vacuum / heat-conducting medium double-working-condition cavity is formed between the middle wall and the outer wall; a transmission device is arranged at the lower end of the piston; a heat-conducting medium liquid storage cavity is formed in the bottom of the cup body and is communicated with the double-working-condition cavity; an electricity storage assembly and a hydrogen production assembly are arranged in the cup base. Heating and heat preservation of water are achieved by converting the working state of the vacuum / heat-conducting medium double-working-condition cavity and cooperating with the light absorption coating and the phase change heat storage material; the waste heat of water is utilized to realize thermoelectric power generation, so that energy conservation and efficiency improvement are realized, and hydrogen-rich water is formed by hydrogen production.

Description

Technical Field

[0001] The invention relates to the technical field of temperature difference power generation, and in particular to a multifunctional water cup with the functions of temperature difference power generation for hydrogen production, phase change energy storage and light absorption heating. Background Art

[0002] In modern life, water cups are a must-have in people's daily lives, and their types are rich and varied. With the improvement of people's living standards and the diversification of life scenes, people have put forward more requirements for the functions of water cups. People hope that water cups can be used in different scenarios, such as outdoors, summer or winter, and meet multiple functions at the same time, such as heat preservation, rapid cooling and heating. At the same time, as people's health awareness grows, new requirements are also put forward for water quality, and hydrogen-rich water is gradually appearing in people's lives. Although there are many kinds of water cups on the market, there are still some shortcomings in meeting the diverse needs of consumers. For example, traditional water cups can only achieve a single heat preservation function and cannot quickly reach a suitable drinking water temperature; at the same time, the heat loss of the water cup is an irreversible process, which makes the heat preservation efficiency low. Even if it is a heated water cup, charging requires power, and the use scenario is limited; the hydrogen production process of the hydrogen-rich water cup is also inseparable from the power supply, and the scope of use is limited. Summary of the invention

[0003] In order to solve the above-mentioned problem that the existing water cups have a single function and the use scenarios of hydrogen-rich water cups are limited by power supply, the present invention proposes a multifunctional water cup with thermoelectric power generation, phase change energy storage and light absorption heating. The present invention achieves water heating and heat preservation by converting the working state of the vacuum / heat-conducting medium dual-mode cavity and cooperating with light-absorbing coating and phase change heat storage material; at the same time, the waste heat of water is used to achieve thermoelectric power generation, which achieves energy saving and efficiency improvement, and can be used to produce hydrogen to form hydrogen-rich water that is beneficial to health when needed.

[0004] The present invention proposes a multifunctional water cup with thermoelectric power generation and hydrogen production, phase change energy storage and light absorption heating, which specifically comprises a cup cover, a cup body and a cup base; the cup cover is arranged at the upper end of the cup body, and the cup base is arranged at the lower end; the cup body comprises an inner wall, a middle wall and an outer wall, a thermoelectric power generation sheet is arranged on the outer surface of the middle wall, and a thin film layer is arranged on the surface of the thermoelectric power generation sheet; a light absorption coating is arranged on the inner surface of the outer wall; a water storage cavity is arranged in the inner wall, a phase change heat storage cavity is arranged between the inner wall and the middle wall, and a vacuum / heat conductive medium dual-working condition cavity is arranged between the middle wall and the outer wall; a piston is arranged in the vacuum / heat conductive medium dual-working condition cavity, and a transmission device is arranged at the lower end of the piston; a heat conductive medium liquid storage cavity is arranged at the bottom of the cup body, and the heat conductive medium liquid storage cavity is connected to the vacuum / heat conductive medium dual-working condition cavity; an electricity storage component and a hydrogen production component are arranged in the cup base, and the electricity storage component is connected to the thermoelectric power generation sheet and the hydrogen production component respectively.

[0005] Furthermore, the outer wall is made of a transparent material, and a light-absorbing coating is provided on the inner surface.

[0006] Further, the hydrogen production component includes a cathode, an anode, an ion membrane, and a water inlet; the upper end of the water inlet is communicated with the water storage cavity, and the cathode, the ion membrane, and the anode are sequentially arranged at the lower end.

[0007] Further, the hydrogen production component further includes a waterproof layer and an oxygen discharge port, the oxygen discharge port is arranged below the anode; the waterproof layer is arranged at the inlet of the oxygen discharge port.

[0008] Further, the power storage component includes a circuit board and a battery, and the circuit board is respectively connected to the thermoelectric generator, the battery, and the hydrogen production component.

[0009] Further, the power storage component further includes a power transmission hole, and the power transmission hole is respectively connected to the circuit board and the battery.

[0010] Further, the cup body is provided with a water delivery channel, and the water delivery channel connects the water storage cavity and the water inlet.

[0011] Further, a limiting structure is arranged at the lower end of the vacuum / heat-conducting medium dual-condition cavity.

[0012] Further, the cup base includes a housing, and a power storage component and a hydrogen production component are arranged inside the housing.

[0013] The beneficial effects of the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention are as follows:

[0014] (1) For the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention, the piston is moved to the lower part of the vacuum / heat-conducting medium dual-condition cavity through a transmission device to form a vacuum cavity. The multifunctional water cup has a heat preservation function. When boiling water is contained in the water cup, the phase change material in the phase change heat storage cavity absorbs heat and undergoes a phase change, so that the water temperature drops to around 50°C. When the heat is conducted to the middle wall surface, due to the blockage of the vacuum cavity, most of the heat cannot be dissipated to the external environment. Compared with traditional thermos cups, the present invention can not only keep the water temperature for a long time by using the heat storage material, but also realize the function of rapid cooling.

[0015] (2) For the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention, the piston is moved to the upper part of the vacuum / heat-conducting medium dual-condition cavity through a transmission device, and the high thermal conductivity liquid diffuses from the liquid storage cavity into the vacuum / heat-conducting medium dual-condition cavity to form a heat conduction cavity. At this time, if boiling water is contained in the water storage cavity, the heat can be smoothly conducted to the outside of the water cup. At this time, the thermoelectric generator can use the high-temperature phase change material as a heat source and the surrounding environment as a cold source for power generation, and store the electric energy in the battery of the cup base, and can be used for hydrogen production to form hydrogen-rich water when needed. At this time, the water cup can meet the purpose that people do not need heat preservation and rapid cooling, and uses the waste heat of the water for power generation and storage, realizing the reuse of waste heat.

[0016] (3) For the multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention, when it is necessary to heat the cold water in the cup, the piston can be moved above the dual-condition cavity by a transmission device to form a heat conduction layer. The light absorption coating is used to absorb sunlight and convert solar energy into heat energy. The heat energy is transmitted into the water in the water storage cavity through the heat storage cavity to increase the temperature of the water, realizing the function of heating water. The present invention uses sunlight to heat water, making full use of energy and having a rich variety of applicable scenarios.

[0017] (4) For the multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention, functions such as heat preservation, cooling, and heating of the water cup are realized by moving the piston through a transmission device, integrating multiple functions into one to achieve multiple uses in one cup; at the same time, the effects of rapid cooling and extended heat preservation time are achieved through the heat storage cavity; and thermoelectric power generation is realized by using the waste heat of the water, achieving energy conservation and efficiency improvement, and can be used for hydrogen production when needed to form hydrogen-rich water beneficial to physical health. Description of the Drawings

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0019] In the drawings:

[0020] Figure 1 is a schematic structural diagram of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention;

[0021] Figure 2 is a cross-sectional view of the cup lid of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention;

[0022] Figure 3 is a cross-sectional view of the cup body of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention;

[0023] Figure 4 is a partial enlarged view of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention at Figure 3 I;

[0024] Figure 5 is a partial enlarged view of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention at Figure 3 II;

[0025] Figure 6 is a cross-sectional view of the cup base of a multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention;

[0026] Wherein: 1 - water storage cavity, 2 - phase change heat storage cavity, 3 - thermoelectric generator, 4 - vacuum / heat conduction medium dual-condition cavity, 5 - heat conduction medium liquid storage cavity, 6 - inner wall, 7 - middle wall, 8 - thin film layer, 9 - outer wall, 10 - piston, 11 - transmission device, 12 - limit structure, 13 - cup lid, 14 - cup body, 15 - water delivery channel, 16 - light absorption coating, 17 - cup base, 18 - battery, 19 - circuit board, 20 - power transmission hole, 21 - cathode, 22 - anode, 23 - ion membrane, 24 - water inlet, 25 - oxygen discharge port, 26 - waterproof layer, 27 - electricity storage component, 28 - hydrogen production component, 29 - outer shell. Specific implementation mode

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In addition, the technical features involved in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Specific implementation mode one: Refer to Figures 1-6Specifically describe this embodiment. A multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating described in this embodiment specifically includes a cup lid 13, a cup body 14, and a cup base 17; the cup lid 13 is provided at the upper end of the cup body 14, and the cup base 17 is provided at the lower end. The cup body 14 and the cup lid 13 are connected by threads, and the cup body 14 and the cup base 17 are connected by threads; the cup body 14 includes an inner wall 6, a middle wall 7, and an outer wall 9. A thermoelectric power generation sheet 3 is provided on the outer surface of the middle wall 7; the outer wall 9 is made of a transparent material, and an optical absorption coating 16 is provided on the inner surface of the outer wall 9; a water storage cavity 1 is provided inside the inner wall 6, and a phase change heat storage cavity 2 is provided between the inner wall 6 and the middle wall 7. A phase change heat storage material is provided in the phase change heat storage cavity 2, and the phase change heat storage material is used to absorb and store heat energy at high temperatures; a vacuum / heat conduction medium dual-mode cavity 4 is provided between the middle wall 7 and the outer wall 9; a piston 10 is provided in the vacuum / heat conduction medium dual-mode cavity 4, and a transmission device 11 is provided at the lower end of the piston 10. The transmission device 11 can control the up and down movement of the piston 10 in the vacuum / heat conduction medium dual-mode cavity 4; a heat conduction medium storage cavity 5 is provided at the bottom of the cup body 14, and a liquid with high thermal conductivity is stored in the heat conduction medium storage cavity 5. The heat conduction medium storage cavity 5 is communicated with the vacuum / heat conduction medium dual-mode cavity 4, and the flow of the heat conduction medium inside the vacuum / heat conduction medium dual-mode cavity 4 is controlled by the up and down movement of the piston 10; when the piston 10 moves to the lower end of the vacuum / heat conduction medium dual-mode cavity 4, the inside of the vacuum / heat conduction medium dual-mode cavity 4 is in a vacuum state; when the piston 10 moves to the upper end of the vacuum / heat conduction medium dual-mode cavity 4, the heat conduction medium flows out of the heat conduction medium storage cavity 5 and enters the inside of the vacuum / heat conduction medium dual-mode cavity 4, and the inside of the vacuum / heat conduction medium dual-mode cavity 4 is in a heat conduction state; a limiting structure 12 is provided at the lower end of the vacuum / heat conduction medium dual-mode cavity 4 to prevent the piston 10 from detaching from the dual-mode cavity 4.

[0032] A power storage component 27 and a hydrogen production component 28 are provided inside the cup base 17. The power storage component 27 is respectively connected to the thermoelectric power generation sheet 3 and the hydrogen production component 28.

[0033] The hydrogen production component 28 includes a cathode 21, an anode 22, an ion membrane 23, and a water inlet 24; the upper end of the water inlet 24 is communicated with the water storage cavity 1, and the lower end is successively provided with the cathode 21, the ion membrane 23, and the anode 22. The cathode 21 is provided on the upper surface of the ion membrane 23, and the anode 22 is provided on the lower surface of the ion membrane 23. The hydrogen production component 28 further includes a waterproof layer 26 and an oxygen exhaust port 25. The oxygen exhaust port 25 is provided below the anode 22; the waterproof layer 26 is provided at the inlet of the oxygen exhaust port 25.

[0034] The electricity storage component 27 includes a circuit board 19 and a battery 18. The circuit board 19 is respectively connected to the thermoelectric generator 3, the battery 18, and the hydrogen production component 28. The electricity storage component 27 further includes a power transmission hole 20, and the power transmission hole 20 is respectively connected to the circuit board 19 and the battery 18. The electric quantity stored in the battery 18 can be discharged through the power transmission hole 20, and when the electric quantity in the battery 18 is insufficient, it can also be charged to the battery 18 through the power transmission hole 20.

[0035] A water delivery channel 15 is provided at the bottom of the cup body 14. The water delivery channel 15 is connected to the water storage cavity 1 and the water outlet 24. When hydrogen needs to be produced, the water in the water storage cavity 1 enters the interior of the hydrogen production component 28 through the water delivery channel 15 and the water outlet 24 for electrolytic hydrogen production.

[0036] A thin film layer 8 is provided on the surface of the thermoelectric generator 3, and the thin film layer 8 protects the thermoelectric generator 3.

[0037] The cup base 17 includes a housing 29, and an electricity storage component 27 and a hydrogen production component 28 are arranged inside the housing 29.

[0038] The materials of the light-absorbing coating 16 include but are not limited to copper oxide coating, black chromium coating, black carbon coating, graphene coating, black nickel coating.

[0039] The phase change materials in the phase change heat storage cavity 2 include but are not limited to paraffin waxes, fatty acids, nano composites, graphene, etc.

[0040] The cup body 14 is of a prism structure, which is convenient for the selection of the thermoelectric generator 3 and its installation during the production process, and reduces the cost brought by customized components. The models of the thermoelectric generator 3 include but are not limited to semiconductor thermoelectric generators, thin film thermoelectric generators, thermoelectric composite thermoelectric generators, solid thermoelectric composite thermoelectric generators, etc.

[0041] The highly thermally conductive liquid contained in the liquid storage cavity 5 includes but is not limited to pure water, alcohol aqueous solutions, silicone oils, ionic liquids, nanofluids, etc.

[0042] The specific working process of the multifunctional water cup with thermoelectric hydrogen production, phase change energy storage, and light absorption heating according to the present invention is as follows:

[0043] When it is desired to store warm water and maintain the temperature for a long time, after assembling the cup holder 17 and the cup body 14, boiling water can be poured into the water storage cavity 1 and the cup lid 13 can be covered. The heat of the water will quickly pass through the inner wall 6 and transfer to the phase change heat storage cavity 2, causing the phase change heat storage material contained in the phase change heat storage cavity 2 to be fully heated and undergo a phase change to absorb heat, rapidly reducing the temperature of the boiling water to a temperature range suitable for drinking (45 - 55 °C). When the temperature of the warm water begins to drop and is lower than the temperature of the phase change heat storage material, the phase change material begins to undergo a phase change again, releasing heat to maintain the temperature of the warm water. Since, when the cold source temperature is constant, the heat dissipation intensity is positively correlated with the heat source temperature, the heat preservation ability of the present invention is stronger than that of ordinary water cups at a lower initial temperature. During this process, the adiabatic piston 10 can be adjusted through the transmission device 11 to switch between the two modes of heat preservation or heat dissipation power generation of the water cup. If the adiabatic piston 10 is pushed to the lowest point, it is the heat preservation working condition. At this time, the space between the thin film layer 8 and the outer wall 9 is a vacuum heat preservation cavity, which blocks most of the heat conduction and can achieve a longer heat preservation effect; if the adiabatic piston 10 is pushed to the highest point, it is the heat dissipation power generation working condition. At this time, the space between the thin film layer 8 and the outer wall 9 is a heat conduction cavity filled with a highly thermally conductive liquid from the liquid storage cavity 5. Since its thermal conduction efficiency is high, it can be used as the cold end of the thermoelectric generator to improve the power generation efficiency. By switching between the two working conditions, the user can independently choose to use the heat preservation mode with a longer heat preservation time but a lower power generation efficiency or the power generation mode with a higher power generation efficiency but a shorter heat preservation time. In addition, the light-absorbing coating 16 on the inner side of the outer wall 2 can also hinder long-wave radiation, thus minimizing heat dissipation as much as possible.

[0044] When it is desired to obtain warm water, after assembling the cup holder 17 and the cup body 14, normal temperature water can be poured into the water storage cavity 1 and the cup lid 13 can be covered. Then, place the water cup under sunlight and push the adiabatic piston 10 to the highest position. Since the outer wall 9 is made of a transparent material, sunlight can shine on the light-absorbing coating 16 from any direction. The radiant energy of the sunlight is received by the light-absorbing coating 16 and converted into heat energy, and enters the water storage cavity 1 through the radially distributed heat conduction cavity, thin film layer 8, thermoelectric generator 3, middle wall 7, phase change heat storage cavity 2 and inner wall 6 to transfer to the water, heating the water. During this process, the dual-mode switching cavity is in the power generation mode, and the space between the thin film layer 8 and the outer wall 9 is a heat conduction cavity filled with a highly thermally conductive liquid, which can reduce the thermal resistance and more efficiently utilize solar energy to heat the water. When the water temperature reaches the melting point of the phase change material, the phase change heat storage material no longer continues to heat the water, so the water temperature will not be too high.

[0045] The electricity generated by the thermoelectric power generation sheet 3 is stored by the electricity storage component 27, which can be used for hydrogen production by the hydrogen production component 28 or for external power discharge through the power transmission port 20. To ensure the power supply for the hydrogen production component 28, the electricity storage component 27 can also be charged through the power transmission port 20. The hydrogen production component 28 produces hydrogen by electrolyzing water and releases it into the water to form hydrogen-rich water that is beneficial to health. When hydrogen-rich water is desired, the cup holder 17 and the cup body 14 can be assembled, water can be injected into the water storage cavity 1 and the cup lid 13 can be covered, and the hydrogen production component 28 can be started when the power is sufficient. The water in the water storage cavity 1 can enter the hydrogen production component 28 through the water delivery channel 15 and be electrolyzed therein to form healthy drinking water rich in hydrogen molecules. During the electrolysis process, oxygen is discharged from the oxygen discharge port 25 through the waterproof layer 26 to ensure the stability of the hydrogen production process.

[0046] Summarizing the above embodiments, for the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention, the piston 10 is moved to below the vacuum / heat conduction medium dual-condition cavity 4 through the transmission device 11 to form a vacuum cavity. The multifunctional water cup has a heat preservation function. When the water cup is filled with boiling water, the phase change material in the phase change heat storage cavity 2 absorbs heat and undergoes a phase change, reducing the water temperature to around 50 °C. When the heat is conducted to the middle wall surface, due to the blockage of the vacuum cavity, most of the heat cannot be dissipated to the external environment. Compared with traditional thermos cups, while the present invention uses heat storage materials to maintain the water temperature for a long time, it can also achieve the function of rapid cooling.

[0047] For the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention, the piston 10 is moved to above the vacuum / heat conduction medium dual-condition cavity 4 through the transmission device 11, and the highly thermally conductive liquid diffuses from the heat conduction medium liquid storage cavity 5 into the vacuum / heat conduction medium dual-condition cavity 4 to form a heat conduction cavity. At this time, if the water storage cavity 1 is filled with boiling water, the heat can be smoothly conducted to the outside of the water cup. At this time, the thermoelectric power generation sheet 3 can use the high-temperature phase change material as the heat source and the surrounding environment as the cold source for power generation, and store the electric energy in the battery 18 of the cup holder 17, which can be used for hydrogen production to form hydrogen-rich water when needed. At this time, the water cup can meet the purpose of people not needing heat preservation and rapid cooling, and uses the waste heat of the water for power generation and storage, realizing the reuse of waste heat.

[0048] For the multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention, when it is necessary to heat the cold water in the cup, the piston 10 can be moved to above the vacuum / heat conduction medium dual-condition cavity 4 through the transmission device 11 to form a heat conduction layer. The light absorption coating 16 is used to absorb sunlight, convert solar energy into heat energy, and the heat energy is transmitted into the water in the water storage cavity 1 through the phase change heat storage cavity 2 to increase the water temperature, realizing the function of heating water. The present invention uses sunlight to heat water, making full use of energy and having a rich variety of applicable scenarios.

[0049] A multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to the present invention realizes functions such as heat preservation, cooling, and heating of the water cup by moving the piston 10 through the transmission device 11, integrates multiple functions into one, and realizes multiple uses in one cup; at the same time, the phase change heat storage cavity 2 realizes the effects of rapid cooling and extended heat preservation time; and utilizes the waste heat of water to generate thermoelectric power, realizes energy conservation and efficiency improvement, and can be used for hydrogen production when needed to form hydrogen-rich water beneficial to physical health.

[0050] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the invention. It can also be a reasonable combination of the features described in the above embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating, characterized in that: It includes a cup lid (13), a cup body (14) and a cup base (17); the cup lid (13) is arranged at the upper end of the cup body (14), and the cup base (17) is arranged at the lower end of the cup body (14); the cup body (14) includes an inner wall (6), a middle wall (7) and an outer wall (9), a thermoelectric generator (3) is arranged on the outer surface of the middle wall (7), and a thin film layer (8) is arranged on the surface of the thermoelectric generator (3); a water storage cavity (1) is arranged inside the inner wall (6), a phase change heat storage cavity (2) is arranged between the inner wall (6) and the middle wall (7), and a vacuum / heat conduction medium dual-mode cavity (4) is arranged between the middle wall (7) and the outer wall (9); a piston (10) is arranged inside the vacuum / heat conduction medium dual-mode cavity (4), and a transmission device (11) is arranged at the lower end of the piston (10); a heat conduction medium storage cavity (5) is arranged at the bottom of the cup body (14), and the heat conduction medium storage cavity (5) is communicated with the vacuum / heat conduction medium dual-mode cavity (4). A power storage component (27) and a hydrogen production component (28) are arranged inside the cup base (17), and the power storage component (27) is respectively connected to the thermoelectric generator (3) and the hydrogen production component (28).

2. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 1, wherein: The outer wall (9) is made of a transparent material, and a light-absorbing coating (16) is arranged on the inner surface.

3. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 1, characterized in that: The hydrogen production component (28) includes a cathode (21), an anode (22), an ion membrane (23) and a water inlet (24); the upper end of the water inlet (24) is communicated with the water storage cavity (1), and the cathode (21), the ion membrane (23) and the anode (22) are sequentially arranged at the lower end.

4. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 3, characterized in that: The hydrogen production component (28) further includes a waterproof layer (26) and an oxygen discharge port (25), and the oxygen discharge port (25) is arranged below the anode (22); the waterproof layer (26) is arranged at the inlet of the oxygen discharge port (25).

5. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 3 or 4, characterized in that: The power storage component (27) includes a circuit board (19) and a battery (18), and the circuit board (19) is respectively connected to the thermoelectric generator (3), the battery (18) and the hydrogen production component (28).

6. The multifunctional water cup with thermoelectric power generation for hydrogen production, phase change energy storage, and light absorption heating according to claim 5, characterized in that: The power storage component (27) further includes a power transmission hole (20), and the power transmission hole (20) is respectively connected to the circuit board (19) and the battery (18).

7. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 5, characterized in that: The cup body (14) is provided with a water delivery channel (15), and the water delivery channel (15) connects the water storage cavity (1) and the water inlet (24).

8. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 1, characterized in that: A limiting structure (12) is arranged at the lower end of the vacuum / heat conduction medium dual-mode cavity (4).

9. The multifunctional water cup with thermoelectric hydrogen production, phase change energy storage and light absorption heating according to claim 1, characterized in that: The cup base (17) includes a housing (29), and a power storage component (27) and a hydrogen production component (28) are arranged inside the housing (29).

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