CN202045433U - Fixture for low-temperature welding in temperature difference power generation device - Google Patents
Fixture for low-temperature welding in temperature difference power generation device Download PDFInfo
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- CN202045433U CN202045433U CN2010206794810U CN201020679481U CN202045433U CN 202045433 U CN202045433 U CN 202045433U CN 2010206794810 U CN2010206794810 U CN 2010206794810U CN 201020679481 U CN201020679481 U CN 201020679481U CN 202045433 U CN202045433 U CN 202045433U
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- power generation
- generation device
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Abstract
The utility model relates to a fixture for low-temperature welding in a temperature difference power generation device, which comprises a lower plate, an upper plate, a bracket and a pressure spring, wherein the bracket is fixed with the lower plate and is vertically matched with the upper plate in a vertically moving mode; the bracket of the pressure spring is provided with a fastening nut; P and N-type thermoelectricity monomer components which are plated with two metal transition layers, such as copper and indium after being plated with Ni or Mo-Fe, are arranged between the upper plate and the lower plate; and electric connection sheets for connecting the P and N-type thermoelectricity monomer components are positioned on the upper plate and the lower plate and are positioned between two end surface of the two thermoelectricity monomer components. In the fixture, the pressure spring is adopted, and the P and N-type thermoelectricity monomer components plated with the copper and indium metal layers are fixed with the electric connection sheets by fastening nuts. When the two monomer components and the electric connection sheets are welded at medium and low temperature, the fixture ensures that the thermoelectric performance of the P-N thermoelectricity monomer components is zero-decrement. Because the temperature difference power generation device is not impacted by higher temperature before being used, the temperature tolerance of the hot end of the temperature difference power generation device can reach 600DEG C.
Description
Technical field
The utility model belongs to the thermoelectric manufacture technology field, particularly relates to a kind of thermoelectric power generation device medium and low temperature welding jigs and fixtures.
Background technology
Thermoelectric power generation device is a kind of solid-state semiconductor device, some the P-N thermoelement is made of, and can utilize the Seebeck effect of thermoelectric material that heat energy directly is converted to electric energy.Use the thermoelectric cell of this kind device development to have compact conformation, do not have moving component, can not discharge harmful substance, long working life can tolerate advantages such as adverse circumstances, is with a wide range of applications.
In present, the low temperature thermoelectric power generation device adopts vacuum welding method to carry out welding between cool and heat ends P-N thermoelement and the electric connecting sheet more.Generally speaking, long-term work temperature requirement according to device, select a kind of fusing point to be higher than the material serviceability temperature but be lower than the brazing filler metal material of thermoelectric material softening point, vacuum condition and being higher than under the temperature conditions of 30 ℃-80 ℃ of solder fusing points thermoelement and electric connecting sheet are welded as a whole.This welding manner is when welding temperature during greater than P-N thermoelement operating temperature, the thermoelectricity capability of P-N thermoelement is caused to a certain degree decay, just be subjected to the impact of higher temperature before causing thermoelectric power generation device to use, influenced the tolerable temperature in thermoelectric power generation device hot junction.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of thermoelectric power generation device medium and low temperature welding jigs and fixtures is provided, the thermoelectricity capability of P-N thermoelement was undamped when these anchor clamps can guarantee to weld, thermoelectric power generation device makes the tolerable temperature in thermoelectric power generation device hot junction can reach 600 ℃ because of not being subjected to the impact of higher temperature before using.
The utility model bismuth telluride thermoelectric power generation device adopts following technical scheme:
A kind of thermoelectric power generation device medium and low temperature welding jigs and fixtures comprises lower plate, upper plate, and described lower plate and upper plate all are shaped on the hole of mounting bracket near four jiaos of places; The hole of lower plate moves up and down with support with the hole of fixed support secure fit, upper plate and cooperates, and screw thread is arranged at support top; Support above the upper plate all is with compression spring; On the support above the compression spring clamp nut is arranged; Place highly identical P type thermoelectric monolithic element and N type thermoelectric monolithic element between lower plate and the upper plate, be coated with copper transition zone and indium transition layer again after all being coated with the Mo-Fe alloy-layer on described two kinds of monolithic element both ends of the surface; Electric connecting sheet is connected as a single entity the upper surface of P type thermoelectric monolithic element and N type thermoelectric monolithic element.
Advantage that the utlity model has and good effect:
1, the utility model adopts compression spring, clamp nut will be coated with the P type thermoelectric monolithic element of copper and indium metal layer and N type thermoelectric monolithic element and electric connecting sheet and fix, when two kinds of monolithic element and electric connecting sheet carry out the medium and low temperature welding, the thermoelectricity capability of P-N thermoelement was undamped when this anchor clamps fastening guaranteed welding, thermoelectric power generation device makes the tolerable temperature in thermoelectric power generation device hot junction can reach 600 ℃ because of not being subjected to the impact of higher temperature before using.
Description of drawings
Fig. 1 is the utility model thermoelectric power generation device medium and low temperature welding jigs and fixtures schematic diagram.
Wherein, 1-lower plate, 2-support, 3-P type thermoelectric monolithic element, 4-N type thermoelectric monolithic element, 5-electric connecting sheet, 6-upper plate, 7-spring, 8-nut.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by specific embodiment, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of thermoelectric power generation device medium and low temperature welding jigs and fixtures comprises lower plate 1, upper plate 6, and described lower plate and upper plate all are shaped on the hole of mounting bracket 2 near four jiaos of places; The hole of lower plate moves up and down with support with the hole of fixed support secure fit, upper plate and cooperates, and screw thread is arranged at support top; Support above the upper plate all is with compression spring 7; Clamp nut 8 is arranged on the support above the compression spring; Place highly identical P type thermoelectric monolithic element 3 and N type thermoelectric monolithic element 4 between lower plate and the upper plate, be coated with copper transition zone and indium transition layer again after all being coated with Ni or Mo-Fe alloy-layer on described two kinds of monolithic element both ends of the surface; Electric connecting sheet 5 is connected as a single entity the upper surface of P type thermoelectric monolithic element and N type thermoelectric monolithic element.
Use of the present utility model: with reference to accompanying drawing 1.
Now the single even device of thermoelectric that constitutes with a pair of bismuth telluride P type thermoelectric monolithic element and N type thermoelectric monolithic element is an example, narrates the use of use of the present utility model in the welding of thermoelectric power generation device medium and low temperature:
(1) at first a pair of bismuth telluride P type thermoelectric monolithic element and N type thermoelectric monolithic element hot end surface are plated ferro-molybdenum separation layer, copper transition zone and indium transition layer successively; The density of electric current is 0.1-0.2A/cm during plating
2, electroplating time 5-15min;
(2) copper electric connecting sheet outer surface is plated the indium metal layer, the density of electric current is 0.05-0.1A/cm during plating
2, electroplating time is 5-10min;
(3) (1) middle P, N type monolithic element and (2) the middle electric connecting sheet that will finish plating used deionized water rinsing respectively, and dehydration is also dried through absolute ethyl alcohol;
(4) with the bismuth telluride P type thermoelectric monolithic element of handling well, bismuth telluride N type thermoelectric monolithic element and electric connecting sheet are placed between the lower plate and upper plate of the utility model welding jigs and fixtures by " π " type, compression spring be enclosed within above the upper plate with fixing four supports of lower plate on, clamp nut applies the pressure of 3N-5N to compression spring by the screw thread on support top, compression spring compresses in length amount is 0.5mm-1mm, bismuth telluride P type thermoelectric monolithic element, N type thermoelectric monolithic element contacts with electric connecting sheet closely, eliminate interfacial voids, be fixed between lower plate and the upper plate;
(5) anchor clamps that install bismuth telluride P type thermoelectric monolithic element, N type thermoelectric monolithic element and electric connecting sheet in (4) are put into vacuum brazing furnace, vacuum reaches 15Pa when following in the stove, charges into the hydrogen-argon-mixed of 0.1MPa in body of heater;
(6) open the soldering oven heater switch, temperature reaches 100 ℃-130 ℃ in the stove, keeps 20min-40min; Continue again furnace temperature is risen to 160 ℃-180 ℃, keep 500min-2400min; Finish welding process;
(7) after welding finishes, close heater switch, when treating that body of heater is cooled to 25 ℃ of room temperatures, take out the utility model welding jigs and fixtures, welding finishes.
The operation principle of the utility model thermoelectric power generation device medium and low temperature welding jigs and fixtures is: pass through anchor clamps, the bismuth telluride P type thermoelectric monolithic element, N type thermoelectric monolithic element and the electric connecting sheet that are coated with three-layer metal is fastening, utilize Cu and In can form the principles of chemistry of high-melting-point alloy at lower temperature, realize that device low-temperature welding high temperature uses, avoid device before use owing to high temperature impact produces performance degradation, make the tolerable temperature upper limit in thermoelectric power generation device hot junction reach 600 ℃.
Claims (1)
1. a thermoelectric power generation device medium and low temperature welding jigs and fixtures is characterized in that: comprise lower plate, upper plate, the close four jiaos of holes of locating all to be shaped on mounting bracket of described lower plate and upper plate; The hole of lower plate moves up and down with support with the hole of fixed support secure fit, upper plate and cooperates, and screw thread is arranged at support top; Support above the upper plate all is with compression spring; On the support above the compression spring clamp nut is arranged; Place highly identical P type thermoelectric monolithic element and N type thermoelectric monolithic element between lower plate and the upper plate, be coated with copper transition zone and indium transition layer again after all being coated with the Mo-Fe alloy-layer on described two kinds of monolithic element both ends of the surface; Electric connecting sheet is connected as a single entity the upper surface of P type thermoelectric monolithic element and N type thermoelectric monolithic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794810U CN202045433U (en) | 2010-12-24 | 2010-12-24 | Fixture for low-temperature welding in temperature difference power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794810U CN202045433U (en) | 2010-12-24 | 2010-12-24 | Fixture for low-temperature welding in temperature difference power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202045433U true CN202045433U (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206794810U Expired - Fee Related CN202045433U (en) | 2010-12-24 | 2010-12-24 | Fixture for low-temperature welding in temperature difference power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202045433U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081508A (en) * | 2015-07-29 | 2015-11-25 | 浙江大学 | Positioning and clamping device applied to thermoelectric module preparation process |
| CN109537007A (en) * | 2018-12-28 | 2019-03-29 | 中国电子科技集团公司第十八研究所 | N-PbTe thermoelectric monomer with Ni-Mo alloy barrier layer and preparation method thereof |
-
2010
- 2010-12-24 CN CN2010206794810U patent/CN202045433U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081508A (en) * | 2015-07-29 | 2015-11-25 | 浙江大学 | Positioning and clamping device applied to thermoelectric module preparation process |
| CN109537007A (en) * | 2018-12-28 | 2019-03-29 | 中国电子科技集团公司第十八研究所 | N-PbTe thermoelectric monomer with Ni-Mo alloy barrier layer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |