CN109920905B - Two-section type thermoelectric material device - Google Patents
Two-section type thermoelectric material device Download PDFInfo
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- CN109920905B CN109920905B CN201910203010.8A CN201910203010A CN109920905B CN 109920905 B CN109920905 B CN 109920905B CN 201910203010 A CN201910203010 A CN 201910203010A CN 109920905 B CN109920905 B CN 109920905B
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Abstract
The invention discloses a double-section thermoelectric material device, which comprises a base and a thermoelectric device body, wherein the upper surface of the base is provided with a groove, the thermoelectric device body is arranged in the groove, the thermoelectric device body comprises a lower substrate, an upper substrate, a conductive plate, a double-section P-type thermoelectric element, a double-section N-type thermoelectric element and an electrode bar, and the lower substrate and the upper substrate are symmetrically arranged; through setting up the screw thread post, the apparatus further comprises a rotating shaft, a bearing, the stripper plate, mounting panel and bolt, when fixed to the installation of thermoelectric device body, it rotates to drive the screw thread post through rotating the turning handle, and then drive the pivot at the bearing internal rotation, thereby make the stripper plate remove left and fix the thermoelectric device body in the recess, the telescopic link can carry on spacingly to the stripper plate simultaneously, the safety guarantee has been promoted, through adopting two sections P shape thermoelectric element and N shape thermoelectric element, with the parallelly connected use of the thermoelectric material stack in different temperature areas, can make full use of the rerum natura characteristic of different materials, can effectively improve thermoelectric device's generating efficiency.
Description
Technical Field
The invention relates to the technical field of thermoelectric materials, in particular to a double-section thermoelectric material device.
Background
The thermoelectric power generation is particularly suitable for the applications, can be used for thermoelectric power generation by utilizing natural temperature difference and industrial waste heat, can utilize non-pollution energy sources existing in the nature, and has good comprehensive social benefits.
The existing thermoelectric material device is usually formed by staggered arrangement of single P-shaped element devices and N-shaped element devices, and the figure of merit of the thermoelectric material can not be effectively utilized, so that the conversion efficiency of the thermoelectric power generation device is low.
Disclosure of Invention
In view of the above-mentioned problems, it is an object of the present invention to provide a two-stage thermoelectric material device to solve the above-mentioned problems of the background art.
In order to achieve the purpose, the invention adopts the technical scheme that: a dual-section thermoelectric material device comprises a base, a thermoelectric device body, a fixing device and a temperature control device, wherein the fixing device is arranged between the base and the thermoelectric device body;
the upper surface of the base is provided with a groove, a thermoelectric device body is arranged in the groove, the thermoelectric device body comprises a lower substrate, an upper substrate, a current-conducting plate, a double-section P-type thermoelectric element, a double-section N-type thermoelectric element and an electrode bar, the lower substrate and the upper substrate are symmetrically arranged, the lower surface of the lower substrate is attached to the inner side wall of the groove, the current-conducting plate is fixedly connected to one side surface of the lower substrate opposite to the upper substrate, and the double-section P-type thermoelectric element and the double-section N-type thermoelectric element are arranged between the two current-conducting plates in a staggered mode;
the two-section P-type thermoelectric element comprises a P1-type thermoelectric element and a P2-type thermoelectric element which are arranged in sections, the materials of the P1-type thermoelectric element and the P2-type thermoelectric element are SnSe and BiSbTe respectively, the two-section N-type thermoelectric element comprises an N1-type thermoelectric element and an N2-type thermoelectric element which are arranged in sections, and the materials of the N1-type thermoelectric element and the N2-type thermoelectric element are Mg respectively2Si0.3Sn0.7And Bi2Te2.79Se0.21The p1 type thermoelectric element and the p2 type thermoelectric elementThe length ratio of the parts is 2: 1-14: the length ratio of the 1, n1 type thermoelectric element to the n2 type thermoelectric element is 11:4-14: 1.
Furthermore, the fixing device comprises a threaded cap clamped on the side surface of the base, a threaded column in threaded connection with the threaded cap is fixedly connected with the threaded column after penetrating through one end of the base;
the left end of screw thread post and the right-hand member fixed connection of pivot, the surface of pivot has cup jointed the bearing, the bearing joint is at the right flank of stripper plate, the left surface of stripper plate and the right flank laminating of thermoelectric device body, the below of base left and right sides face is fixed with two mounting panels respectively, set up threaded hole on the mounting panel, and the inner wall threaded connection of screw hole has the bolt.
Further, the temperature control device comprises an alarm horn and an alarm lamp which are fixedly arranged on the upper surface of the base, the left side surface of the base is fixedly provided with a temperature sensor, the front surface of the base is provided with a control box, the front surface of the control box is fixedly provided with a display screen and a control button, and a single chip microcomputer and a battery jar are arranged in the control box;
be provided with signal conversion module, storage module, contrast module and alarm module on the singlechip, signal conversion module's input and temperature sensor's output end signal connection, signal conversion module's output and the input electric connection of singlechip, the output of singlechip respectively with storage module and contrast module's input electric connection, the singlechip still and two-way electric connection between the display screen, contrast module's output and alarm module's input electric connection, alarm module's output respectively with the input electric connection of warning loudspeaker and alarm lamp, the inside demountable installation of battery jar has the battery, the output of battery respectively with the input electric connection of singlechip, temperature sensor, display screen, warning loudspeaker and alarm lamp.
Furthermore, the inner side wall of the groove in the upper surface of the base and the left side surface of the extrusion plate are both bonded with high-temperature-resistant rubber pads.
Furthermore, the right side of the extrusion plate is fixedly connected with the left ends of the two telescopic rods respectively, the right ends of the two telescopic rods are fixedly connected with the inner side wall of the groove respectively, and the two telescopic rods are located on the front side and the rear side of the threaded column respectively.
Furthermore, the front side face, the rear side face and the left side face and the right side face of the thermoelectric device body are provided with protection plates, and the upper surface and the lower surface of each protection plate are fixedly connected with the opposite side faces of the upper substrate and the lower substrate.
Further, the quantity of electrode bar is two, and two electrode bar relative one ends respectively with current conducting plate electric connection, and two electrode bar one end that carries on the back mutually pass two guard plates around respectively and extend the thermoelectric device body, just seted up the standing groove to the electrode bar on the base.
Further, the upper substrate is a ceramic substrate.
Further, two sections P type thermoelectric elements and two sections N type thermoelectric elements set up to a plurality of, and a plurality of two sections P type thermoelectric elements and two sections N type thermoelectric elements dislocation set each other, adjacent two sections P type thermoelectric elements and two sections N type thermoelectric elements pass through the current conducting plate and connect, and the junction coating has heat conduction silicone grease, form the isolation insulating layer between adjacent two sections P type thermoelectric elements and two sections N type thermoelectric elements, and the isolation insulating layer specifically is the rubber that the coating has epoxy glue.
Furthermore, a battery cover is hinged to the position, right opposite to the battery groove, of the front face of the control box through a hinge.
Compared with the prior art, the invention has the beneficial effects that:
1. by adopting the double-section P-shaped thermoelectric element and the N-shaped thermoelectric element, the thermoelectric materials in different temperature ranges are superposed and connected in parallel for use, the physical properties of different materials can be fully utilized, and the power generation efficiency of the thermoelectric device can be effectively improved.
2. By arranging the threaded column, the rotating shaft, the bearing, the extrusion plate, the mounting plate and the bolt, the base is fixedly mounted through the mounting plate and the screw, when the thermoelectric device body is fixedly mounted, the threaded column is driven to rotate through rotating the rotating handle, and then the rotating shaft is driven to rotate in the bearing, so that the extrusion plate moves leftwards to fix the thermoelectric device body in the groove, and meanwhile, the telescopic rod can limit the extrusion plate, so that the thermoelectric device cannot fall off due to collision in the working process, and safety guarantee is improved;
3. all set up the guard plate through the front and back both sides face and the left and right sides face at the thermoelectric device body to make the guard plate can protect P type thermoelectric element, N type thermoelectric element and the current conducting plate inside the thermoelectric device body, make each component be in a relatively safe environment at the course of the work, when fixing the thermoelectric device body simultaneously, the stripper plate passes through the guard plate and contacts with thermoelectric body device.
4. Through setting up temperature sensor, singlechip and display screen, make temperature sensor can be constantly to the temperature sensing of external environment in thermoelectric device body course of operation, the temperature signal transmission that will sense simultaneously gives signal conversion module, signal conversion module sends for the singlechip after converting the signal, the singlechip shows on sending for the display screen after to signal processing, thereby make people can look over constantly to external environment temperature, and timely reply of making, made things convenient for people's work.
5. By arranging the comparison module, the storage module, the alarm lamp and the alarm horn, people can input the lowest temperature lower limit required by the operation of the thermoelectric device body through the control button on the control box, and sends the data to the singlechip to enable the singlechip to process the signal and then send the signal to the storage module for storage, meanwhile, real-time temperature data sensed by the temperature sensor is sent to the comparison module through the single chip microcomputer, the single chip microcomputer adjusts and takes out temperature lower limit data and sends the temperature lower limit data to the comparison module, the comparison module compares the two temperature data, when the temperature is lower than the lower limit temperature, the comparison module sends a signal to the alarm module, thereby make alarm module send signal for warning loudspeaker and alarm lamp carry out audible and visual alarm to remind people in time to handle, thereby can guarantee that the thermoelectric device body can not stop work because of the temperature difference undersize.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a cross-section of a thermoelectric device body according to the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic structural view of a front view of the present invention;
FIG. 5 is a schematic structural diagram of the control box of the present invention;
FIG. 6 is a control flow diagram of the present invention;
FIG. 7 is an enlarged schematic view of the invention at A;
FIG. 8 is a graph of the material merit coefficients for p 1-type thermoelectric elements and p 2-type thermoelectric elements of the present invention;
FIG. 9 is a graph showing the figure of merit for the materials of the n1 type thermoelectric element and the n2 type thermoelectric element of the present invention;
in the figure: 1-a base; 2-a thermoelectric device body; 201-lower substrate; 202-an upper substrate; 203-a conductive plate; 204-P type thermoelectric elements; 2041-p1 type thermoelectric elements; 2042-p2 type thermoelectric elements; 205-an N-type thermoelectric element; 2051-n1 type thermoelectric elements; 2052-p2 type thermoelectric elements; 206-electrode rod; 3-a screw cap; 4-a threaded post; 5-turning handle; 6-a rotating shaft; 7-a bearing; 8-extruding a plate; 9-mounting a plate; 10-bolt; 11-an alarm horn; 12-an alarm light; 13-a temperature sensor; 14-a control box; 15-a display screen; 16-a battery cover; 17-a single chip microcomputer; 18-a signal conversion module; 19-a storage module; 20-a comparison module; 21-an alarm module; 22-a storage battery; 23-high temperature resistant rubber mat; 24-a telescopic rod; 25-protective plate.
Detailed Description
The invention provides a two-stage thermoelectric material device. Technical solutions provided by embodiments of the present invention to solve the above technical problems, for better understanding of the above technical solutions, the above technical solutions will be described in detail with reference to the drawings and specific embodiments of the present disclosure.
Example 1:
the two-segment P-type thermoelectric element 204 comprises P1-type thermoelectric elements 2041 and P2-type thermoelectric elements 2042 which are arranged in segments, the materials of the P1-type thermoelectric element and the P2-type thermoelectric element are SnSe and BiSbTe respectively, the two-segment N-type thermoelectric element 205 comprises N1-type thermoelectric elements 2051 and N2-type thermoelectric elements 2052 which are arranged in segments, and the materials of the N1-type thermoelectric element and the N2-type thermoelectric element are Mg respectively2Si0.3Sn0.7And Bi2Te2.79Se0.21The length ratio of the p1 type thermoelectric element 2041 to the p2 type thermoelectric element 2042 is 2: 1-14: the 1, n 1-type thermoelectric elements 2051 and n 2-type thermoelectric elements 2052 have a length ratio of 11:4 to 14: 1.
As shown in FIGS. 8 and 9, the P1 type thermoelectric material SnSe and the N1 type thermoelectric material Mg2Si0.3Sn0.7The using temperature range is 300-800K, and the figure of merit of the material is larger in the high temperature region; p2 type thermoelectric material BiSbTe and N2 type thermoelectric material Bi2Te2.79Se0.21The using temperature range of the material is 300-550K, and the figure of merit of the material is greatly higher than that of the P1 type material in the using temperature range.
The p1 type thermoelectric element 2041 material is SnSe, the p2 type thermoelectric element 2042 material is BiSbTe, and the n1 type thermoelectric element 2051 material is Mg2Si0.3Sn0.7The n2 type thermoelectric element 2052 is made of Bi2Te2.79Se0.21The two-stage P-type thermoelectric element 204 and the two-stage N-type thermoelectric element 205 have a cross-sectional size of 5e-3m×5e-3The distance between the m, P-type thermoelectric element and the N-type thermoelectric element is 0.5e-2m, the temperature of the hot end (upper end) is 800K, and the temperature of the cold end (lower end) is 300K. The upper end of the thermoelectric material is set to be an equal potential surface, and the lower end of the thermoelectric material is set to be a 0 potential surface. The p1 type thermoelectric element and the p2 type thermoelectric elementAlternatively, the n1 type thermoelectric element and the n2 type thermoelectric element may be connected by soldering, and when the length of the p1 type thermoelectric element 2041 is set to 1.3e-2The m, p2 type thermoelectric element 2042 has a length of 0.2e-2m; n1 type thermoelectric element 2051 has a length of 1.1e-2m, n2 type thermoelectric element 2052 has a length of 0.4e-2m, the efficiency of the thermoelectric device was measured to be 14.75%;
when the length of the p1 type thermoelectric element 2041 is set to 1.4e-2The m, p2 type thermoelectric element 2042 has a length of 0.1e-2m; n1 type thermoelectric element 2051 has a length of 1.4e-2m, n2 type thermoelectric element 2052 has a length of 0.1e-2m, the efficiency of the thermoelectric device was measured to be 13.61%;
when the length of the p1 type thermoelectric element 2041 is set to 1.0e-2The m, p2 type thermoelectric element 2042 has a length of 0.5e-2m; n1 type thermoelectric element 2051 has a length of 1.2e-2m, n2 type thermoelectric element 2052 has a length of 0.3e-2m, the efficiency of the thermoelectric device was measured to be 14.24%; when the length of the p1 type thermoelectric element 2041 is set to 1.5e-2The m, p2 type thermoelectric element 2042 has a length of 0e-2m; n1 type thermoelectric element 2051 has a length of 1.5e-2m, n2 type thermoelectric element 2052 has a length of 0e-2m, the efficiency of the thermoelectric device was measured to be 12.81%;
in the above experimental data, when all P-type thermoelectric elements are P1-type thermoelectric elements and all N1-type thermoelectric elements, the efficiency of the device was at least 12.81%; the maximum efficiency of 14.75% was obtained when the length ratio of the p 1-type thermoelectric element to the p 2-type thermoelectric element was 13:2 and the length ratio of the n 1-type thermoelectric element to the n 2-type thermoelectric element was 11: 4.
The efficiency of the thermoelectric material device which adopts the staggered arrangement of the single P-shaped element device and the N-shaped element device is generally between 5 and 10 percent, and the data show that the thermoelectric material device which adopts the double-section thermoelectric element can effectively improve the generating efficiency of the thermoelectric device.
Example 2:
As shown in fig. 1, 3 and 7, the fixing device comprises a screw cap 3 clamped on the side surface of the base 1, a screw post 4 connected with the screw cap 3 through internal threads, and a rotating handle 5 fixedly connected with the screw post 4 after penetrating through one end of the base 1;
the left end of screw thread post 4 and the right-hand member fixed connection of pivot 6, bearing 7 has been cup jointed to the surface of pivot 6, bearing 7 joint is at the right flank of stripper plate 8, the left surface of stripper plate 8 and the laminating of the right flank of thermoelectric device body 2, the below of the 1 left and right sides face of base is fixed with two mounting panels 9 respectively, set up threaded hole on the mounting panel 9, and the inner wall threaded connection of screw hole has bolt 10.
As an optimization scheme, the inner side wall of the groove on the upper surface of the base 1 and the left side surface of the extrusion plate 8 are all bonded with the high-temperature-resistant rubber pad 23, in this embodiment, the high-temperature-resistant rubber pad 23 is arranged on the inner side wall of the groove, so that when the thermoelectric device body 2 is placed into the groove to be fixed, the situation that the external environment temperature is too high and the temperature is transmitted to the lower substrate 201 through the base 1 can be avoided, and meanwhile, the hard collision between the thermoelectric device body 2 and the base 1 and the extrusion plate 8 can be avoided when the thermoelectric device body 2 is fixed.
As optimization scheme, the right flank of stripper plate 8 respectively with the left end fixed connection of two telescopic links 24, and the right-hand member of two telescopic links 24 respectively with the inside wall fixed connection of recess, and two telescopic links 24 are located the front and back both sides of screw thread post 4 respectively, in this embodiment, telescopic link 24 not only supports stripper plate 8, it drives telescopic link 24 synchronous extension or shrink to make stripper plate 8 remove under the drive of screw thread post 4 when removing, telescopic link 24 can carry on spacingly to stripper plate 8 simultaneously, it just is more stable to make stripper plate 8 remove when removing can not rotate.
As an optimized scheme, the front side surface, the rear side surface, the left side surface and the right side surface of the thermoelectric device body 2 are provided with the protection plates 25, the upper surface and the lower surface of each protection plate 25 are fixedly connected with the opposite side surfaces of the upper substrate 202 and the lower substrate 201, in the embodiment, the protection plates 25 protect elements between the upper substrate 202 and the lower substrate 201, so that the P-type thermoelectric elements 204 and the N-type thermoelectric elements 205 are prevented from being damaged due to external collision, and smooth operation of the thermoelectric device body 2 is ensured.
As an optimization scheme, the number of the electrode rods 206 is two, and the opposite ends of the two electrode rods 206 are respectively electrically connected with the conductive plate 203, and the opposite ends of the two electrode rods 206 respectively penetrate through the front and the rear two protection plates 25 to extend out of the thermoelectric device body 2, the base 1 is provided with a placing groove opposite to the electrode rods 206, in this embodiment, electricity generated in the operation process of the thermoelectric device body 2 can form a closed loop with an external circuit through the two electrode rods 206, so that the electricity is supplied to the external circuit.
As an optimized scheme, the upper substrate 202 is a high-efficiency heat-conducting ceramic substrate. In this embodiment, the upper substrate 202 is a ceramic substrate, when thermal energy is generated to generate electric energy, external heat can be transferred to the P-type thermoelectric element 204 and the N-type thermoelectric element 205 through the ceramic substrate, so that a potential difference is generated between the P-type thermoelectric element 204 and the N-type thermoelectric element 205, and thus the external heat can be transferred to an external circuit under the action of the electrode rod 206, and when the electric energy is generated to generate thermal energy, the thermal energy can be rapidly transferred through the ceramic substrate, so that the conversion efficiency between the thermal energy and the electric energy is faster.
As an optimized solution, the P-type thermoelectric element 204 and the N-type thermoelectric element 205 are arranged in a plurality, and a plurality of P-type thermoelectric elements 204 and N-type thermoelectric elements 205 are arranged in a staggered manner, and adjacent P-type thermoelectric elements 204 and N-type thermoelectric elements 205 are connected by the conductive plate 203, and the connection is coated with a heat conductive silicone grease, and adjacent P-type thermoelectric elements 204 and N-type thermoelectric elements 205 are formed as an isolation insulating layer, and the isolation insulating layer is specifically rubber coated with epoxy glue. In this embodiment, by arranging the P-type thermoelectric elements 204 and the N-type thermoelectric elements 205 in a staggered arrangement, the heat transferred from the upper substrate 202 can be rapidly converted, and the conversion efficiency is improved, and meanwhile, an isolation insulating layer is formed between the adjacent P-type thermoelectric elements 204 and N-type thermoelectric elements 205, and the isolation insulating layer is made of rubber made of epoxy resin glue, so that the adjacent P-type thermoelectric elements 204 and N-type thermoelectric elements 205 are isolated from each other, and thus, no mutual influence is caused, and the smooth thermoelectric conversion is ensured.
Example 3:
As shown in fig. 4 and 5, the temperature control device includes an alarm horn 11 and an alarm lamp 12 fixedly installed on the upper surface of the base 1, a temperature sensor 13 is fixedly installed on the left side surface of the base 1, a control box 14 is arranged on the front surface of the base 1, a display screen 15 and a control button are fixedly installed on the front surface of the control box 14, and a single chip microcomputer 17 and a battery jar are arranged in the control box 14;
the single chip microcomputer 17 is provided with a signal conversion module 18, a storage module 19, a comparison module 20 and an alarm module 21, the input end of the signal conversion module 18 is electrically connected with the output end of the temperature sensor 13, the output end of the signal conversion module 18 is electrically connected with the input end of the singlechip 17, the output end of the single chip microcomputer 17 is electrically connected with the input ends of the storage module 19 and the comparison module 20 respectively, the single chip microcomputer 17 is also electrically connected with the display screen 15 in a bidirectional way, the output end of the comparison module 20 is electrically connected with the input end of the alarm module 21, the output end of the alarm module 21 is electrically connected with the input ends of the alarm horn 11 and the alarm lamp 12 respectively, the inside demountable installation of battery jar has battery 22, the output of battery 22 respectively with singlechip 17, temperature sensor 13, display screen 15, warning loudspeaker 11 and the input electric connection of alarm lamp 12. A battery cover 16 is hinged to the position, opposite to the battery groove, of the front face of the control box 14. In this embodiment, when the storage battery 22 in the control box 14 needs to be replaced, the storage battery 22 can be taken out by opening the battery cover 16, as shown in fig. 6, people input the lowest temperature lower limit required by the operation of the thermoelectric device body 2 through the control button on the control box 14, and send data to the single chip microcomputer 17, so that the single chip microcomputer 17 processes the signal and sends the processed signal to the storage module 19 for storage, meanwhile, the temperature sensor 13 senses the real-time temperature of the external environment and sends the sensed real-time temperature signal to the signal conversion module 18, the signal conversion module 18 converts the signal into an electrical signal and sends the electrical signal to the single chip microcomputer 17, the single chip microcomputer 17 sends the signal to the comparison module 20 and the display screen 15, so that people can pass through the external temperature of the display screen 15 at any time, and conveniently adjust the external environment temperature in time, meanwhile, the singlechip 17 calls out temperature lower limit data to be sent to the comparison module 20, so that the comparison module 20 compares the two temperature data, when the temperature is lower than the lower limit temperature, the comparison module 20 sends a signal to the alarm module 21, so that the alarm module 21 sends a signal to the alarm horn 11 and the alarm lamp 12 to perform sound-light alarm, and people are reminded to process the data in time.
The working principle and the using process of the invention are as follows: after the thermoelectric device is installed, firstly, the base 1 is fixedly installed through the installation plate 9 and the bolt 10 on the base 1, people place the thermoelectric device body 2 in the groove on the base 1, rotate the rotating handle 5 to drive the threaded column 4 to rotate, further drive the rotating shaft 6 to rotate so that the rotating shaft 6 rotates in the bearing 7, further drive the extrusion plate 8 to move leftwards, thereby fixing the thermoelectric device body 2, simultaneously, two electrode bars 206 of the thermoelectric device body 2 are connected with an external circuit through a lead to form a closed loop, meanwhile, external heat is conducted between the P-type thermoelectric element 204 and the N-type thermoelectric element 205 in the thermoelectric device body 2 under the transmission action of the upper substrate 202, thereby forming a potential difference between the P-type thermoelectric element 204 and the N-type thermoelectric element 205, is transmitted to the electrode bars 206 through the conducting plates 203, is transmitted from the electrode bars 206, and simultaneously, people input the lowest temperature required by the operation of the thermoelectric device body 2 through the control button on the control box 14 Lower limit of temperature, and send the data to the single chip 17, so that the single chip 17 processes the signal and sends the processed signal to the storage module 19 for storage, meanwhile, the temperature sensor 13 senses the real-time temperature of the external environment, and sends the sensed real-time temperature signal to the signal conversion module 18, the signal conversion module 18 converts the signal into an electrical signal and sends the electrical signal to the single chip 17, the single chip 17 sends the signal to the comparison module 20 and the display screen 15, so that people can conveniently adjust the external environment temperature through the external temperature of the display screen 15 at any time, meanwhile, the single chip 17 adjusts the lower limit data of the temperature and sends the lower limit data of the temperature to the comparison module 20, so that the comparison module 20 compares the two temperature data, when the temperature is lower than the lower limit temperature, the comparison module 20 sends the signal to the alarm module 21, so that the alarm module 21 sends the signal to the alarm horn 11 and the alarm lamp, thereby reminding people to process in time.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only one of the embodiments, and the present invention is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (10)
1. A two-stage thermoelectric material device comprising a base (1) and a thermoelectric device body (2), characterized in that: the thermoelectric device comprises a base (1), a thermoelectric device body (2) and a fixing device, wherein the fixing device is arranged between the base (1) and the thermoelectric device body (2);
the upper surface of the base (1) is provided with a groove, a thermoelectric device body (2) is arranged in the groove, the thermoelectric device body (2) comprises a lower substrate (201), an upper substrate (202), a conductive plate (203), a double-section P-type thermoelectric element (204), a double-section N-type thermoelectric element (205) and an electrode rod (206), the lower substrate (201) and the upper substrate (202) are symmetrically arranged, the lower surface of the lower substrate (201) is attached to the inner side wall of the groove, the conductive plate (203) is fixedly connected to one side surface of the lower substrate (201) opposite to the upper substrate (202), and the double-section P-type thermoelectric element (204) and the double-section N-type thermoelectric element (205) are arranged between the two conductive plates (203) in a staggered mode;
the two-segment P-type thermoelectric element (204) comprises a P1-type thermoelectric element (2041) and a P2-type thermoelectric element (2042) which are arranged in segments, the materials of the P1-type thermoelectric element and the P2-type thermoelectric element are SnSe and BiSbTe respectively, the two-segment N-type thermoelectric element (205) comprises an N1-type thermoelectric element (2051) and an N2-type thermoelectric element (2052) which are arranged in segments, and an N1-type thermoelectric element and an N2-type thermoelectric elementThe material of the elements is Mg2Si0.3Sn0.7And Bi2Te2.79Se0.21The length ratio of the p1 type thermoelectric element (2041) to the p2 type thermoelectric element (2042) is 2: 1-14: the length ratio of the 1, n 1-type thermoelectric element (2051) to the n 2-type thermoelectric element (2052) is 11:4-14: 1.
2. The two-stage thermoelectric material device according to claim 1, wherein: the fixing device comprises a threaded cap (3) clamped on the side surface of the base (1), a threaded column (4) connected with the threaded cap (3) through internal threads, and a rotating handle (5) fixedly connected to the threaded column (4) after penetrating through one end of the base (1);
the left end of screw thread post (4) and the right-hand member fixed connection of pivot (6), bearing (7) have been cup jointed to the surface of pivot (6), bearing (7) joint is at the right flank of stripper plate (8), the left flank of stripper plate (8) and the right flank laminating of thermoelectric device body (2), the below of base (1) left and right sides face is fixed with two mounting panels (9) respectively, set up threaded hole on mounting panel (9), and the inner wall threaded connection of screw hole has bolt (10).
3. A two-stage type thermoelectric material device according to claim 1 or 2, wherein: the temperature control device comprises an alarm horn (11) and an alarm lamp (12) which are fixedly arranged on the upper surface of a base (1), a temperature sensor (13) is fixedly arranged on the left side surface of the base (1), a control box (14) is arranged on the front surface of the base, a display screen (15) and a control button are fixedly arranged on the front surface of the control box (14), and a single chip microcomputer (17) and a battery jar are arranged in the control box (14);
the alarm device is characterized in that a signal conversion module (18), a storage module (19), a comparison module (20) and an alarm module (21) are arranged on the single chip microcomputer (17), the input end of the signal conversion module (18) is in signal connection with the output end of the temperature sensor (13), the output end of the signal conversion module (18) is electrically connected with the input end of the single chip microcomputer (17), the output end of the single chip microcomputer (17) is respectively electrically connected with the input ends of the storage module (19) and the comparison module (20), the single chip microcomputer (17) is also electrically connected with the display screen (15) in a bidirectional mode, the output end of the comparison module (20) is electrically connected with the input end of the alarm module (21), the output end of the alarm module (21) is respectively electrically connected with the input ends of the alarm horn (11) and the alarm lamp (12), and a storage battery (22) is detachably mounted, the output end of the storage battery (22) is respectively and electrically connected with the input ends of the single chip microcomputer (17), the temperature sensor (13), the display screen (15), the alarm horn (11) and the alarm lamp (12).
4. A two-stage thermoelectric material device according to claim 2, wherein: and a high-temperature-resistant rubber pad (23) is bonded to the inner side wall of the groove in the upper surface of the base (1) and the left side surface of the extrusion plate (8).
5. A two-stage thermoelectric material device according to claim 2, wherein: the right side face of the extrusion plate (8) is fixedly connected with the left ends of the two telescopic rods (24), the right ends of the two telescopic rods (24) are fixedly connected with the inner side wall of the groove, and the two telescopic rods (24) are located on the front side and the rear side of the threaded column (4) respectively.
6. The two-stage thermoelectric material device according to claim 1, wherein: the front side face, the rear side face, the left side face and the right side face of the thermoelectric device body (2) are provided with protection plates (25), and the upper surface and the lower surface of each protection plate (25) are fixedly connected with the opposite side faces of the upper substrate (202) and the lower substrate (201).
7. The two-stage thermoelectric material device according to claim 6, wherein: the quantity of electrode bar (206) is two, and two electrode bar (206) relative one end respectively with current conducting plate (203) electric connection, and two guard plate (25) extend thermoelectric device body (2) around two electrode bar (206) one end of carrying on the back mutually pass respectively, just seted up the standing groove to electrode bar (206) on base (1).
8. The two-stage thermoelectric material device according to claim 1, wherein: the upper substrate (202) is a ceramic substrate.
9. The two-stage thermoelectric material device according to claim 1, wherein: the double-section P-type thermoelectric element (204) and the double-section N-type thermoelectric element (205) are arranged to be a plurality of, the double-section P-type thermoelectric element (204) and the double-section N-type thermoelectric element (205) are arranged in a staggered mode, the adjacent double-section P-type thermoelectric element (204) and the double-section N-type thermoelectric element (205) are connected through the conducting plate (203), heat-conducting silicone grease is coated at the connecting position, an isolation insulating layer is formed between the adjacent double-section P-type thermoelectric element (204) and the adjacent double-section N-type thermoelectric element (205), and the isolation insulating layer is specifically rubber coated with epoxy resin glue.
10. A two-stage thermoelectric material device according to claim 3, wherein: the position of the front face of the control box (14) opposite to the battery groove is hinged with a battery cover (16) through a hinge.
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