A thermal energy storage device

Abstract

This invention discloses a thermal energy storage device, comprising N bases, a heat-collecting disc, a thermoelectric generator, and a battery. The heat-collecting disc is composed of a first heat conductor, a second heat conductor, and a third heat conductor, with the thermal conductivity of the materials of the first, second, and third heat conductors decreasing sequentially. The bases are connected to the first heat conductor of the heat-collecting disc, and one side of the thermoelectric generator is attached to the surface of the third heat conductor of the heat-collecting disc. The thermoelectric generator is connected to the battery and charges the battery. N is not less than two. This device has the advantages of high heat dissipation efficiency and energy saving and environmental protection.

Description

Technical Field

[0001] This invention belongs to the field of phase change heat accumulation and release technology and thermoelectric conversion technology, specifically relating to a heat accumulation and energy storage device. Background Technology

[0002] The operating efficiency of large electronic devices is affected by temperature. The heat generated by the operation of large electronic devices raises the temperature of the devices, thereby reducing their performance or even damaging them due to high temperatures. Currently, ordinary natural heat dissipation or simple conduction heat dissipation methods are inefficient, waste energy, and cannot meet the heat dissipation requirements of the devices. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the ordinary natural heat dissipation method or simple conduction heat dissipation method adopted by large electronic devices has low heat dissipation efficiency, wastes energy, and cannot meet the heat dissipation requirements of the equipment.

[0004] To address the issues of efficient heat dissipation and energy saving in large electronic devices, this invention provides a thermal energy storage device, comprising N bases, a heat-collecting disc, a thermoelectric generator, and a battery. Each base includes a first patch, a heat-conducting pipe, and a second patch. The first patch is welded to one end of the heat-conducting pipe, and the second patch is welded to the other end of the heat-conducting pipe. The heat-collecting disc is composed of a first heat conductor, a second heat conductor, and a third heat conductor. The first and second heat conductors are annular strips, with the outer surface of the second heat conductor connected to the inner surface of the first heat conductor. The third heat conductor is disc-shaped, with its outer surface connected to the inner surface of the second heat conductor. The thermal conductivity of the materials of the first, second, and third heat conductors decreases sequentially. The second patch of the base is connected to the first heat conductor of the heat-collecting disc. One side of the thermoelectric generator is attached to the surface of the third heat conductor of the heat-collecting disc. The thermoelectric generator is connected to the battery and charges the battery, wherein N is not less than two. The first patch of each of the N bases contacts the device to be cooled. The bases are connected to the heat-collecting disc, enabling unidirectional heat transfer from the device to the disc. Because multiple bases and the heat-collecting disc have high heat conduction efficiency, this method is more efficient than natural cooling. Heat is transferred from the bases to the edge of the heat-collecting disc, and then concentrates towards the center. This concentrated energy is converted into electrical energy by a thermoelectric generator to charge the battery, thus achieving the conversion of heat energy into electrical energy and realizing the utilization of heat for greater energy savings.

[0005] More preferably, a convection device is included, which is connected to a battery. The collected heat is converted into electrical energy, which then charges the battery. The battery drives the convection device to accelerate heat convection and achieve heat dissipation. This process can be completed without consuming additional energy, thereby further improving heat dissipation efficiency and energy-saving characteristics.

[0006] More preferably, the convection device is a cooling fan.

[0007] More preferably, the heat pipe is a closed hollow tube containing a phase change liquid. The heat pipe is designed based on the heat pipe principle, and its shape and length can be adjusted according to specific application scenarios.

[0008] More preferably, the phase change liquid is water.

[0009] More preferably, the first, second, and third heat conductors of the heat-collecting disc are made of copper, iron, and steel respectively, which effectively ensures unidirectional heat conduction from the periphery to the center of the heat-collecting disc.

[0010] More preferably, the first, second, and third heat conductors of the heat-collecting disk are all engraved with vertical holes at a certain angle to the diameter direction around the ring. Through the opening, the metal conductors form an insulator-conductor-insulator structure, thereby realizing the directional conduction of heat and further promoting the accumulation of heat towards the center of the heat-collecting disk.

[0011] More preferably, the first patch, the heat pipe, and the second patch of the base are made of copper.

[0012] More preferably, the second patch of the base is welded or threaded to the first heat conductor of the heat collecting disk.

[0013] More preferably, the outer circular surface of the second heat conductor is welded to the inner circular surface of the first heat conductor, and the third heat conductor is disc-shaped with its outer circular surface welded to the inner circular surface of the second heat conductor.

[0014] The beneficial effects of this invention are that, compared with natural heat dissipation, this invention uses multiple bases to collect heat, which is then directionally conducted to the heat-collecting disc and concentrated towards the center of the disc. The concentrated energy is converted into electrical energy through a thermoelectric generator to charge the battery, thus realizing the conversion of thermal energy into electrical energy. This drives the convection device to accelerate heat convection and achieve heat dissipation. Moreover, this process does not consume additional energy. The heat convection device further cools the electronic equipment, thereby further improving heat dissipation efficiency. It has the advantages of high heat dissipation efficiency and energy saving and environmental protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the base structure in this invention;

[0016] Figure 2 This is a schematic diagram of the structure of the heat-collecting disc in this invention;

[0017] Figure 3 This is a schematic diagram of the device of the present invention;

[0018] Figure 4 This is an electrical schematic diagram of the present invention.

[0019] In the figure, there are: base 1, first patch 1-1, heat pipe 1-2, second patch 1-3, first heat conductor 2-1, second heat conductor 2-2, third heat conductor 2-3, thermoelectric generator 3, battery 4, and convection device 5. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings. The connection of the present invention is a mechanical connection, meaning that the two components are in close contact and fixed together, thereby achieving heat conduction. This embodiment focuses on the structural features of the present invention. Components not described in detail herein, such as the battery and thermoelectric generator, are all known technologies.

[0021] The conventional natural heat dissipation or simple conduction heat dissipation methods used in large electronic devices are inefficient, wasteful of energy, and cannot meet the heat dissipation requirements of the equipment.

[0022] To address the issues of efficient heat dissipation and energy saving in large electronic devices, this invention provides a thermal energy storage device, comprising N bases 1, a heat-collecting disk 2, a thermoelectric generator 3, and a battery 4. Each base includes a first patch 1-1, a heat-conducting pipe 1-2, and a second patch 1-3. The first patch 1-1 is welded to one end of the heat-conducting pipe 1-2, and the second patch 1-3 is welded to the other end of the heat-conducting pipe 1-2. The heat-collecting disk 2 is composed of a first heat conductor 2-1, a second heat conductor 2-2, and a third heat conductor 2-3. The first heat conductor 2-1 and the second heat conductor 2-2 are in the shape of annular strips, and the outer circular surface of the second heat conductor 2-2 is connected to the inner circular surface of the first heat conductor 2-1. The third heat conductor 2-3 is in the shape of a disk, and the outer circular surface of the third heat conductor 2-3 is connected to the inner circular surface of the second heat conductor 2-2. Preferably, the outer circular surface of the second heat conductor 2-2 is welded to the inner circular surface of the first heat conductor 2-1, and the third heat conductor 2-3 is in the shape of a disk, and the outer circular surface of the third heat conductor 2-3 is welded to the inner circular surface of the second heat conductor 2-2.

[0023] The thermal conductivity of the materials of the first heat conductor 2-1, the second heat conductor 2-2, and the third heat conductor 2-3 decreases sequentially. The second patch 1-3 of the base 1 is connected to the first heat conductor 2-1 of the heat collecting disk 2. One side of the thermoelectric generator 3 is attached to the surface of the third heat conductor 2-3 of the heat collecting disk 2. The thermoelectric generator 3 is connected to the battery 4 and charges the battery 4, wherein N is not less than two.

[0024] Based on the characteristics and heat dissipation requirements of the equipment to be cooled, the number and installation positions of the bases 1 are first determined. The first patch 1-1 of N bases 1 contacts the equipment to be cooled. The bases 1 are connected to the heat-collecting disc 2, realizing unidirectional heat transfer from the equipment to the heat-collecting disc 2. Due to the high heat conduction efficiency of multiple bases 1 and heat-collecting disc 2, the heat dissipation efficiency is higher compared to natural heat dissipation. The heat transferred from the bases 1 to the edge of the heat-collecting disc 2 and the heat accumulates towards the center of the heat-collecting disc 2. The accumulated energy is converted into electrical energy through the thermoelectric generator 3 to charge the battery 4, realizing the conversion of thermal energy into electrical energy, thereby achieving heat utilization and greater energy saving.

[0025] Specifically, in the above scheme, the heat pipe 1-2 is a closed hollow tube containing a phase change liquid. Based on the heat pipe principle, the designed heat pipe 1-2 has a highly efficient unidirectional heat conduction function. The shape and length of the heat pipe 1-2 can be adjusted according to specific application scenarios. During the fabrication of the heat pipe, the gas inside should be extracted to create a vacuum, which lowers the boiling point of the liquid and allows for rapid vaporization. The second patch 1-3 of the base 1 is welded or threaded to the first heat conductor 2-1 of the heat collecting disk 2. The first patch 1-1, heat pipe 1-2, and second patch 1-3 of the base 1 are made of copper, which has excellent thermal conductivity.

[0026] More preferably, the phase change liquid is water. Using water as the phase change liquid can meet the thermal conductivity requirements and reduce costs. Of course, paraffin can also be used as the phase change liquid.

[0027] In the above scheme, to effectively ensure unidirectional heat conduction from the periphery to the center of the heat-collecting disc 2, the first heat conductor 2-1, the second heat conductor 2-2, and the third heat conductor 2-3 of the heat-collecting disc 2 are made of copper, iron, and steel, respectively. Each of the first heat conductor 2-1, the second heat conductor 2-2, and the third heat conductor 2-3 of the heat-collecting disc 2 has a vertical hole etched around the ring at a certain angle to the diameter direction. Through these holes, the second patch 1-3 of the base 1 is welded to or threaded to the first heat conductor 2-1 of the heat-collecting disc 2. The thermal conductivity decreases sequentially from the outside to the inside of the heat-collecting disc. The outermost ring can use a thermal conductivity of approximately 400 W / (m·K), such as copper; the second ring can use a thermal conductivity of 80 W / (m·K), such as iron; and the innermost ring can use a thermal conductivity of 15 W / (m·K), such as steel. For each layer of material, inclined rotating vertical holes are etched along the circumference, so that the metal conductor forms an insulator-conductor-insulator structure. Taking advantage of the difference between the thermal conductivity of air k=0.026 W / (m·k) and the thermal conductivity of the material, heat is efficiently concentrated towards the center of the disk.

[0028] Based on the above solution, the present invention further includes a convection device 5, which is connected to a storage battery 4. The collected heat is converted into electrical energy, which then charges the storage battery 4. The storage battery 4 drives the convection device 5 to accelerate heat convection and achieve heat dissipation. This process can be completed without consuming additional energy, thereby further improving heat dissipation efficiency and energy-saving characteristics.

[0029] More preferably, the convection device 5 is a cooling fan, which has a simple structure and low cost.

[0030] The experimental results of comparing the heat dissipation effect of charging piles with and without the device of the present invention using a non-contact infrared temperature measurement device are analyzed (as shown in Table 1).

[0031] It is evident that the surface temperature of the charging pile using this invention exhibits a significant decreasing trend and stabilizes, reaching thermal equilibrium. The surface temperature of the charging pile shows a clear decreasing trend within 2 minutes, with the fastest decrease occurring between 5 and 10 seconds. From 2 to 12 minutes, the charging pile maintains a temperature of approximately 34.4℃.

[0032] The surface temperature of the charging pile that did not use this invention showed an upward trend followed by a slight downward trend, and then gradually stabilized, tending towards thermal equilibrium. The charging pile reached a maximum temperature of 47.2℃ in about 60 seconds, and maintained a stable temperature of about 46.6℃ after 2 minutes.

[0033] Using formula

[0034]

[0035] The calculated stable temperature difference on the surface of the charging pile is 12.2℃, which improves the heat dissipation effect by approximately 26.18%.

[0036]

[0037] Table 1

[0038] In summary, compared to natural heat dissipation, this invention uses multiple bases to collect heat, which is then directionally conducted to the heat-collecting disc and concentrated at its center. The concentrated energy is converted into electrical energy through a thermoelectric generator to charge the battery. This process converts thermal energy into electrical energy, which drives a convection device to accelerate heat convection and achieve heat dissipation. Moreover, this process does not consume additional energy. The heat convection device further cools the electronic equipment, thereby further improving heat dissipation efficiency. This invention has the advantages of high heat dissipation efficiency and energy saving and environmental protection.

[0039] The present invention has provided a detailed description of a thermal energy storage device. Any obvious modifications made by those skilled in the art without departing from the essential spirit of the invention will fall within the scope of protection of the patent rights of this invention.

Claims

1. A thermal energy storage device, characterized in that, The system includes N bases, a heat-collecting disc, a thermoelectric generator, and a battery. Each base includes a first patch, a heat-conducting pipe, and a second patch. The first patch is welded to one end of the heat-conducting pipe, and the second patch is welded to the other end of the heat-conducting pipe. The heat-collecting disc is composed of a first heat-conducting body, a second heat-conducting body, and a third heat-conducting body. The first and second heat-conducting bodies are annular strips, with the outer surface of the second heat-conducting body connected to the inner surface of the first heat-conducting body. The third heat-conducting body is disc-shaped, with its outer surface connected to the inner surface of the second heat-conducting body. The thermal conductivity of the materials of the heat conductor, the second heat conductor, and the third heat conductor decreases sequentially. The second patch of the base is connected to the first heat conductor of the heat collecting disk. One side of the thermoelectric generator is attached to the surface of the third heat conductor of the heat collecting disk. The thermoelectric generator is connected to the battery and charges the battery. N is not less than two. It also includes a convection device, which is connected to the battery. The first, second, and third heat conductors of the heat collecting disk are all engraved with vertical holes that are inclined at a certain angle to the diameter direction around the ring to achieve efficient heat accumulation towards the center of the disk.

2. The thermal energy storage device as described in claim 1, characterized in that, The convection device is a cooling fan.

3. A thermal energy storage device as described in any one of claims 1-2, characterized in that, The heat pipe is a closed hollow tube and contains a phase change liquid.

4. The thermal energy storage device as described in claim 3, characterized in that, The phase change liquid is water.

5. A thermal energy storage device as described in claim 3, characterized in that, The first, second, and third heat conductors of the heat-collecting disc are made of copper, iron, and steel, respectively.

6. A thermal energy storage device as described in claim 3, characterized in that, The first patch, heat pipe, and second patch of the base are made of copper.

7. A thermal energy storage device as described in claim 3, characterized in that, The second patch of the base is welded or threaded to the first heat conductor of the heat collecting disc.

8. A thermal energy storage device as described in claim 3, characterized in that, The outer circular surface of the second heat conductor is welded to the inner circular surface of the first heat conductor, and the third heat conductor is disc-shaped with its outer circular surface welded to the inner circular surface of the second heat conductor.

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