Hot end surface protection process of TEG power generation device and TEG power generation device

Abstract

The invention discloses a hot end surface protection process of a TEG power generation device and the TEG power generation device, and belongs to the technical field of TEG power generation devices.The hot end surface protection process comprises the steps that S1, a material meeting the hot end temperature requirement is selected to manufacture a protection film substrate; s2, manufacturing an adhesive layer on a single surface of the protective film substrate to obtain an adhesive film; s3, M strip films are punched on the adhesive film, the strip films are attached to the adhesive film on the periphery but are independent of the adhesive film on the periphery, and each strip film is composed of N square grids connected in sequence; wherein M is equal to the number of rows of particles on the TEG power generation device, and N is equal to the number of particles in each row on the TEG power generation device; s4, the adhesive film is pasted to the TEG power generation device according to the position corresponding relation between the strip film and the particles on the TEG power generation device; and S5, removing the adhesive film on the periphery of the strip film. A layer of protective film is adhered to the hot end part of the TEG power generation device, so that the hot end surface of the TEG power generation device can be effectively protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of TEG power generation devices, and in particular relates to a hot end surface protection process of a TEG power generation device and a TEG power generation device. Background Art

[0002] As is well known, a thermoelectric generator (TEG), also known as a Seebeck generator, is a solid-state device that is able to convert a heating flux (i.e., a temperature difference) directly into electrical energy, which is achieved through a phenomenon known as the Seebeck effect (the Seebeck effect is a form of the thermoelectric effect). Thermoelectric generators have a variety of applications due to their unique energy conversion method. Typically, thermoelectric generators are used in low-power remote applications, or in situations where larger but more efficient heat engines (such as Stirling engines) cannot be used. Unlike traditional heat engines, the electrical components used in thermoelectric generators to perform the heat-to-electrical energy conversion process are solid-state and have no moving parts. This heat-to-electrical energy conversion method can be performed using maintenance-free components that are inherently highly reliable and can be used to build generators with long service lives. This makes thermoelectric generators ideal for devices with low to medium power requirements in remote uninhabited or inaccessible locations, such as mountaintops, the vacuum of space, or the deep sea.

[0003] In the modern wilderness survival process, hot food has become a major trend in wilderness production. Using the energy supply system for the field ration heater based on TEG (thermoelectric generator) technology, the heat energy generated by the burner can be directly converted into electrical energy to maintain the operation of the burner, and the excess electricity can be used to charge the lithium-ion energy storage power supply that drives the burner. Such a system can meet the needs of fast meals and long-term combat supplies in the wilderness, and enhance the self-sustaining ability of hot food supply.

[0004] In the field survival ration heating and energy supply system, the cold end temperature of the TEG power generation device is usually around 100°C, while the hot end temperature is above 300°C. The high operating temperature of the hot surface brings new challenges to the production of TEG power generation devices: the cold and hot end electrodes of traditional TEG power generation devices are connected to the thermoelectric particles by soldering, but the melting point of the lead-tin solder used is 180°C, which obviously cannot meet the high operating temperature requirements of the hot surface. Therefore, it is necessary to use thermal spraying technology to prepare the hot end electrode to ensure that the hot end of the TEG power generation device can work stably at high temperatures above 300°C, while adapting to the requirements of fast and efficient mass production.

[0005] Before preparing the hot-end electrode, TEG power generation devices need to undergo a series of preliminary treatments. During this treatment process, if the hot-end surface of the particles is not properly protected, the surface state of the particles will be seriously polluted, which will cause great difficulties in the subsequent preparation of the hot-end electrode using thermal spraying technology, and may even cause the hot-end electrode to fall off. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a hot end surface protection process of a TEG power generation device and a TEG power generation device. By sticking a protective film on the hot end part of the thermoelectric power generation device, the hot end surface of the TEG power generation device can be effectively protected.

[0007] The technical solution adopted by the present invention is:

[0008] The first object of the present invention is to provide a hot end surface protection process for a TEG power generation device, comprising:

[0009] S1. Select a material that meets the hot end temperature requirements to make a protective film substrate, wherein the length of the protective film substrate is a, the width is b, and the thickness is d;

[0010] S2, forming an adhesive layer on a single surface of the protective film substrate to obtain an adhesive film;

[0011] S3, punching out M strip films on the adhesive film, wherein the strip films are in contact with the surrounding adhesive films but are independent of each other, and each strip film is composed of N sequentially connected squares; wherein M is equal to the number of rows of particles on the TEG power generation device, and N is equal to the number of particles in each row on the TEG power generation device;

[0012] S4, according to the positional correspondence between the film strip and the particles on the TEG power generation device, the adhesive film is attached to the TEG power generation device;

[0013] S5. Remove the film around the strip film.

[0014] Preferably, the hot end temperature is required to be greater than 300°C.

[0015] Preferably, the value of a is 100 mm, the value of b is 90 mm, and the value of d is 0.1 mm.

[0016] Preferably, S4 includes: using a special tool to stick the adhesive film onto the TEG power generation device; the special tool includes:

[0017] A substrate, wherein a groove for placing a TEG power generation device is formed on the upper surface of the substrate, wherein the length of the groove is equal to the length of the TEG power generation device, the width of the groove is equal to the width of the TEG power generation device, and the depth of the groove is equal to the depth of the TEG power generation device;

[0018] A limiting wall, wherein the limiting wall is fixed on the upper surface of the substrate; the limiting wall comprises a left side wall located on the left side of the groove, a right side wall located on the right side of the groove, and a rear side wall located on the rear side of the groove; wherein the left side wall and the right side wall are both perpendicular to the rear side wall, and the size of the rectangular area between the left side wall, the rear side wall and the right side wall is the same as the size of the adhesive film.

[0019] Preferably, the specific steps of using a special tool to adhere the adhesive film to the TEG power generation device include:

[0020] S401, placing a TEG power generation device in the groove, with particles of the TEG power generation device located on the upper surface;

[0021] S402, inserting the adhesive film obliquely downward from the notch of the limiting wall into the rectangular area surrounded by the left wall, the rear side wall and the right side wall, so that the two sides of the adhesive film are in contact with the left wall and the right wall, and the inner side of the adhesive film is in contact with the intersection line of the rear side wall and the substrate;

[0022] S403, applying pressure from the inside to the outside to the upper surface of the adhesive film in the rectangular area between the left side wall, the rear side wall and the right side wall, so that the adhesive film and the particles of the TEG power generation device are tightly bonded.

[0023] Preferably, M=8, N=16.

[0024] The second object of the present invention is to provide a TEG power generation device, including a TEG power generation device obtained by the above-mentioned hot end surface protection process of the TEG power generation device.

[0025] Compared with the prior art, the advantages and positive effects of this application are:

[0026] By implementing the innovative technical solution proposed in the present invention, a protective film can be attached to the hot end of the thermoelectric power generation (TEG) device. The function of this protective film is to effectively protect the hot end surface of the TEG power generation device and ensure that its surface remains clean and pure. In this way, in the subsequent thermal spraying process, a high-strength hot end electrode can be smoothly prepared on the hot end surface of the TEG device. This protective measure is of great significance for improving the performance of the TEG device and extending its service life.

[0027] In view of the hot end surface size structure of the TEG power generation device particles, the present invention specially designs a special tooling equipment. This tooling equipment can ensure that during the film lamination process, the squares on the strip film and the particle positions at the hot end of the TEG power generation device can be accurately aligned. Through this precise alignment, the efficiency and accuracy of film lamination are greatly improved. In addition, this special tooling also ensures that during the subsequent process treatment, the protective film will not fall off or warp, thereby ensuring the stability and reliability of the entire production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is a flow chart of a preferred embodiment of the present invention;

[0030] Figure 2 The film obtained in S3 in the preferred embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a special tooling in a preferred embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the use process of the special tooling in the preferred embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the protective film being pressed with force in a preferred embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of the protective film pasting effect in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0036] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0037] See also Figures 1 to 6 , a first embodiment, a hot end surface protection process of a TEG power generation device, comprising:

[0038] S1. First, according to the high temperature requirement of the hot end of the TEG power generation device, the material of the protective film is selected, that is, the material that meets the hot end temperature requirement is selected to make a protective film substrate, wherein the length of the protective film substrate is a, the width is b, and the thickness is d;

[0039] In order to meet the high temperature requirements of the hot end of the TEG power generation device, for example, greater than 300°C,

[0040] The sizes of a, b, and c are determined according to actual needs. For example, in this embodiment, the value of a can be 100 mm, the value of b can be 90 mm, and the value of d can be 0.1 mm.

[0041] S2, forming an adhesive layer on a single surface of the protective film substrate to obtain an adhesive film 1;

[0042] S3, punching out M strip films on the adhesive film, wherein the strip films 2 are attached to the surrounding adhesive films 1 but are independent of each other, and each strip film is composed of N sequentially connected squares 3; wherein M is equal to the number of rows of particles on the TEG power generation device, and N is equal to the number of particles in each row on the TEG power generation device;

[0043] This step is one of the core steps of the present invention, and specifically the following technical steps can be adopted:

[0044] First, the number of rows of hot-end particles on the TEG power generation device, the number of particles in each row, the row spacing and other parameters are obtained;

[0045] Then, a stamping die with the same parameters is selected according to the parameters, and the wall thickness of the stamping die should be thin enough, such as micron level;

[0046] Finally, a punching die is used to perform vertical punching perpendicular to the surface of the film. The punching effect is to punch from one surface of the film to another surface, so that the strip film 2 and the surrounding film 1 are two independent parts. When the punching die is withdrawn, the strip film 2 and the surrounding film 1 are tightly attached to each other under the action of the elastic force of the material.

[0047] S4, according to the positional correspondence between the film strip and the particles on the TEG power generation device, the adhesive film is attached to the TEG power generation device;

[0048] This step is another core step of the present invention, and the adhesive film can be attached to the TEG power generation device using a special tool;

[0049] The special tooling is as follows Figure 3 As shown, the special tooling includes:

[0050] A substrate 5, the upper surface of the substrate is preferably a plane, and a groove for placing the TEG power generation device is provided on the upper surface of the substrate, the length of the groove is equal to the length of the TEG power generation device, the width of the groove is equal to the width of the TEG power generation device, and the depth of the groove is equal to the depth of the TEG power generation device;

[0051] A limiting wall, wherein the limiting wall is fixed on the upper surface of the substrate; the limiting wall comprises a left side wall 5 located on the left side of the groove, a right side wall 7 located on the right side of the groove, and a rear side wall 6 located on the rear side of the groove; wherein the left side wall and the right side wall are both perpendicular to the rear side wall, and the size of the rectangular area between the left side wall, the rear side wall and the right side wall is the same as the size of the adhesive film.

[0052] The operation process of the special tooling is as follows Figure 4 As shown, it should be noted that: Figure 4 In the figure, it is only to show the inclined insertion method of the film, so Figure 4 The film selected in the experiment is the one before stamping, but in actual use, the film after stamping is inserted, and the stamping marks can be seen on the film after stamping. The specific steps of using special tooling to stick the film to the TEG power generation device include:

[0053] S401, placing a TEG power generation device in the groove, with particles of the TEG power generation device located on the upper surface;

[0054] S402, inserting the adhesive film obliquely downward from the notch of the limiting wall into the rectangular area surrounded by the left wall, the rear side wall and the right side wall, so that the two sides of the adhesive film are in contact with the left wall and the right wall, and the inner side of the adhesive film is in contact with the intersection line of the rear side wall and the substrate;

[0055] S403, applying pressure from the inside to the outside to the upper surface of the adhesive film in the rectangular area between the left side wall, the rear side wall and the right side wall, so that the adhesive film and the particles of the TEG power generation device are tightly bonded.

[0056] S5. Remove (tear off) the adhesive film around the strip film.

[0057] The present invention first selects a rectangular protective film substrate, sets adhesive on one side to obtain an adhesive film, and then uses a special stamping die to stamp out M strips (for example, M=8) on the entire adhesive film, so that the 8 strips can be inlaid and fixed on the entire adhesive film; wherein, Figure 2 As shown, each strip membrane is connected by a plurality of squares, and the size of a single square is consistent with the particle size of the TEG power generation device; the number of squares on each strip membrane is consistent with the number of particles in each row of the TEG power generation device; for example, Figure 2 and Figure 6As shown, when the TEG power generation device has 16 rows of particles, two adhesive films with 8 strips are required, each of which includes 8 stamped strips. The first adhesive film is used to apply films to the odd-numbered rows of particles of the TEG power generation device, that is, the strips on the first adhesive film and the odd-numbered rows of particles of the TEG power generation device have a one-to-one corresponding positional relationship, and the second adhesive film is used to apply films to the even-numbered rows of particles of the TEG power generation device. The strips on the second adhesive film and the even-numbered rows of particles of the TEG power generation device have a one-to-one corresponding positional relationship, and the first adhesive film and the second adhesive film have 8 strips respectively; firstly, the first adhesive film is applied to the TEG power generation device; then, the second adhesive film is applied to the TEG power generation device; or the second adhesive film can be applied to the TEG power generation device first, and then, the first adhesive film can be applied to the TEG power generation device; the application method of the two films is the same;

[0058] When designing the first film, arrange the 8 strips on the first film at a fixed distance in the longitudinal direction ( Figure 2 The distance between two adjacent strips is equal to Figure 6 The distance between two rows of particles in the , for example, Figure 2 In the example, the spacing between the first and second strips is equal to Figure 6 The distance between the first row of particles and the third row of particles, Figure 2 In the example, the spacing between the second and third strips is equal to Figure 6 The spacing between the third row of particles and the fifth row of particles, and so on), when the entire protective film is pasted to the device, the 8 strip films are pasted together with the corresponding 8 rows of particles (odd rows) on the TEG power generation device, and then the entire protective film is peeled off, the protective film is separated from the strip film, and the 8 strip films are pasted on the surface of the TEG device to form protection.

[0059] When designing the second film, arrange the 8 strips on the second film at a fixed distance in the longitudinal direction ( Figure 2 The distance between two adjacent strips is equal to Figure 6 The distance between two rows of particles in the , for example, Figure 2 In the example, the spacing between the first and second strips is equal to Figure 6 The distance between the second row of particles and the fourth row of particles, Figure 2 In the example, the spacing between the second and third strips is equal to Figure 6 The spacing between the fourth row of particles and the sixth row of particles, and so on), when the entire protective film is pasted to the device, the 8 strip films are pasted together with the corresponding 8 rows of particles (even-numbered rows) on the TEG power generation device, and then the entire protective film is peeled off, the protective film is separated from the strip film, and the 8 strip films are pasted on the surface of the TEG device to form protection.

[0060] Finally, the film pasting of 16 rows of particles is completed.

[0061] The protective film is used in conjunction with special tooling to quickly and conveniently stick the protective film on the surface of the TEG power generation device.

[0062] The protective film is used in conjunction with a special tooling to quickly and conveniently paste the protective film on the surface of the TEG power generation device. The special tooling is designed with a groove, the length and width of the groove are consistent with the TEG power generation device, and the depth of the groove is consistent with the height of the TEG power generation device; the special tooling is designed with a left wall, a rear wall and a right wall, and the length and width of the rectangular area between the left wall, the rear wall and the right wall are consistent with the protective film; when pasting the protective film on the surface of the TEG power generation device, the TEG power generation device is placed in the groove of the special tooling, and the protective film is inserted obliquely into the rectangular area, and the top of the protective film (the end that first enters the rectangular area) is aligned with the intersection of the rear wall and the substrate. The intersection is the rotation axis for the subsequent rotation of the protective film, that is, the protective film rotates along the intersection of the top of the protective film and the special tooling until the protective film is completely pasted on the end face of the TEG power generation device; after the protective film is pasted on the surface of the TEG power generation device, use a special pressing tool 8 to apply force to press it. Finally, peel off the protective film, separate the strip film from the surrounding adhesive film, and the 8 strip films can be accurately and firmly pasted on the surface of the TEG power generation device.

[0063] Based on the above design and operation process, the protective film can fully cover the hot end surface of the TEG power generation device particles and provide them with sufficient protection; by using it in conjunction with special tooling, the protective film can be quickly and accurately pasted; after the protective film is pasted, a special clamping tool is used to apply pressure to ensure that the protective film is tightly combined with the TEG power generation device particles, thereby preventing it from falling off or warping during the process.

[0064] The second embodiment is a TEG power generation device, including a TEG power generation device obtained by the above-mentioned hot end surface protection process of the TEG power generation device.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A hot end surface protection process for a TEG power generation device, characterized in that: include: S1. Select a material that meets the hot end temperature requirements to make a protective film substrate, wherein the length of the protective film substrate is a, the width is b, and the thickness is d; S2, forming an adhesive layer on a single surface of the protective film substrate to obtain an adhesive film; S3, punching out M strip films on the adhesive film, wherein the strip films are in contact with the surrounding adhesive films but are independent of each other, and each strip film is composed of N sequentially connected squares; wherein M is equal to the number of rows of particles on the TEG power generation device, and N is equal to the number of particles in each row on the TEG power generation device; S4, according to the positional correspondence between the film strip and the particles on the TEG power generation device, the adhesive film is attached to the TEG power generation device; S5. Remove the film around the strip film.

2. The hot end surface protection process of the TEG power generation device according to claim 1 is characterized in that: The hot end temperature is required to be greater than 300°C.

3. The hot end surface protection process of the TEG power generation device according to claim 1, characterized in that: The value of a is 100mm, the value of b is 90mm, and the value of d is 0.1mm.

4. The hot end surface protection process of the TEG power generation device according to claim 1, characterized in that: S4 includes: using a special tool to stick the film onto the TEG power generation device; the special tool includes: A substrate, wherein a groove for placing a TEG power generation device is formed on the upper surface of the substrate, wherein the length of the groove is equal to the length of the TEG power generation device, the width of the groove is equal to the width of the TEG power generation device, and the depth of the groove is equal to the depth of the TEG power generation device; A limiting wall, wherein the limiting wall is fixed on the upper surface of the substrate; the limiting wall comprises a left side wall located on the left side of the groove, a right side wall located on the right side of the groove, and a rear side wall located on the rear side of the groove; wherein the left side wall and the right side wall are both perpendicular to the rear side wall, and the size of the rectangular area between the left side wall, the rear side wall and the right side wall is the same as the size of the adhesive film.

5. The hot end surface protection process of the TEG power generation device according to claim 4 is characterized in that: The specific steps of using special tooling to stick the film to the TEG power generation device include: S401, placing a TEG power generation device in the groove, with particles of the TEG power generation device located on the upper surface; S402, inserting the adhesive film obliquely downward from the notch of the limiting wall into the rectangular area surrounded by the left wall, the rear side wall and the right side wall, so that the two sides of the adhesive film are in contact with the left wall and the right wall, and the inner side of the adhesive film is in contact with the intersection line of the rear side wall and the substrate; S403, applying pressure from the inside to the outside to the upper surface of the adhesive film in the rectangular area between the left side wall, the rear side wall and the right side wall, so that the adhesive film and the particles of the TEG power generation device are tightly bonded.

6. The hot end surface protection process of the TEG power generation device according to claim 1, characterized in that: M=8, N=16.

7. A TEG power generation device, characterized in that: The invention comprises a TEG power generation device obtained by the hot end surface protection process of the TEG power generation device according to any one of claims 1 to 6.

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