CN101320781A - Thermoelectric device - Google Patents
Thermoelectric device Download PDFInfo
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- CN101320781A CN101320781A CNA2008101316487A CN200810131648A CN101320781A CN 101320781 A CN101320781 A CN 101320781A CN A2008101316487 A CNA2008101316487 A CN A2008101316487A CN 200810131648 A CN200810131648 A CN 200810131648A CN 101320781 A CN101320781 A CN 101320781A
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Abstract
In order to provide a highly reliable thermoelectric device, in a thermoelectric device (1) having a plurality of p-type thermoelectric elements (10) and n-type thermoelectric elements (11), a plurality of heat-radiating-side electrodes (13), arranged in accordance with positions where respective thermoelectric elements (10, 11) are to be arranged, are arrayed in an array fashion on a planar surface of a heat-radiating-side board (14). Heat-radiating-side end surfaces of the plurality of p-type thermoelectric elements (10) and n-type thermoelectric elements (11) and the heat-radiating-side electrodes are joined together by solders (12). Heat-absorbing-side electrodes (13) are brought into sliding contact with heat-absorbing-side end surfaces of these thermoelectric elements (10, 11).
Description
The application is that application number is 200410095162.4, the applying date is on July 23rd, 2004, denomination of invention is divided an application for the patent application of " thermoelectric conversion arrangement ".
Technical field
The present invention relates on the heat-absorbent surface of a plurality of thermoelectric elements, install in the heat absorbing side electrode, the heat release lateral electrode is installed on the heat delivery surface of each thermoelectric element, the series connection of the electric property of whole thermoelectric elements, the thermoelectric conversion arrangement that heat constitutes in parallel, it is good particularly to relate to manufacturing, has the thermoelectric conversion arrangement of good joint reliability.
Background technology
Thermoelectric conversion arrangement combination has utilized the thermoelectric element of thermoelectric effects such as Thomson effect, Pei Erdi effect, Seebeck effect and has constituted, as the temperature adjustment unit that electrical converter is become heat, and production in enormous quantities in enormous quantities.In addition, as generator unit, its research and development also just progressively advance.
As the thermoelectric conversion arrangement of generator unit, have a plurality of thermoelectric elements of configuration of being separated by on the insulated substrate of electrode, the series connection of electric property, heat is in parallel.
Approaching for the generating efficiency of the generating efficiency that makes thermoelectric conversion arrangement and thermoelectric element self, need successfully carry out to the heat supply of an end of thermoelectric element with from the heat release of the other end of thermoelectric element.Therefore, in the substrate that constitutes thermoelectric conversion arrangement, use the good ceramic substrate of heat conduction.In addition, constitute electrode on the end that is configured in thermoelectric element by the low material of resistance.
Summary of the invention
As mentioned above, by heating, thermoelectric conversion arrangement carries out work, and simultaneously, each structure member has been compared thermal expansion during with normal temperature.At this moment, according to the difference of the coefficient of linear expansion of each structure member and the temperature difference of heat absorbing side and heat release side, the deflection difference on each parts.Because the difference of this heat distortion amount, the junction surface of thermoelectric element and thermoelectric element is damage easily sometimes.
In order to address the above problem a little, the thermal deformation even the object of the present invention is to provide a kind of heat hot electric conversion means, the junction surface of thermoelectric element and thermoelectric element also are difficult to damage, thermoelectric element converting means and manufacture method thereof that reliability is good.
In order to solve above-mentioned problem, the invention provides a kind of thermoelectric conversion arrangement, have: wiring substrate; A plurality of thermoelectric elements, an one end face is fixing also vertically to be located on the above-mentioned wiring substrate; A plurality of electrod assemblies, it is configured to contact with another end face of a plurality of above-mentioned thermoelectric elements; Cap, it is exerted pressure to the direction of another end face at an end face from above-mentioned thermoelectric element by being configured to, and keeps a plurality of above-mentioned thermoelectric elements and a plurality of above-mentioned electrod assembly; Bonded block, it keeps the relative position of above-mentioned wiring substrate and above-mentioned cap.
At this moment, above-mentioned electrod assembly preferably is arranged to surround the zone that above-mentioned thermoelectric element is crimped, and limits the position of above-mentioned thermoelectric element.
In addition, above-mentioned electrod assembly is characterised in that and preferably is configured to connect with above-mentioned thermoelectric element.
In addition, preferably has the deformable structure member that constitutes by conductive material that is arranged between above-mentioned thermoelectric element and the above-mentioned electrod assembly.
In addition, the insulating element of the position of qualification thermoelectric element preferably is configured between the above-mentioned thermoelectric element of separate configuration.
In addition, the best interval between the thermoelectric element that surrounds by above-mentioned electrod assembly, than this thermoelectric element with by and the thermoelectric element that surrounds of the electrod assembly of this electrod assembly adjacency between the interval lack.
In addition, above-mentioned bonded block utilizes solder to engage with above-mentioned wiring substrate, preferably forms chamfer shape with above-mentioned bonded block with composition surface solder.
In addition, be preferably in and be provided with folding laterally folding part on above-mentioned bonded block and the contact portion above-mentioned cap.
In addition, preferably be provided with bend crooked on the direction of exerting pressure to above-mentioned cap.
According to thermoelectric conversion arrangement of the present invention, can provide a kind of simple in structure, the thermoelectric conversion arrangement that the reliability during running is high.
Description of drawings
Fig. 1 is the profile that an execution mode of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 2 is the process chart that the manufacture method of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 3 is the process chart that the manufacture method of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 4 is the process chart that the manufacture method of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 5 is the process chart that the manufacture method of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 6 is the process chart that the manufacture method of the thermoelectric conversion arrangement that the present invention relates to is shown.
Fig. 7 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Fig. 8 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Fig. 9 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Figure 10 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Figure 11 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Figure 12 is the profile that other execution modes of the thermoelectric conversion arrangement that the present invention relates to are shown.
Embodiment
Below, with reference to accompanying drawing, explain embodiments of the present invention.
Fig. 1 is the figure of section structure that an execution mode of the thermoelectric conversion arrangement that the present invention relates to is shown.Thermoelectric conversion arrangement 1 has a plurality of p type thermoelectric elements 10 and n type thermoelectric element 11.A plurality of heat release lateral electrodes 13 of corresponding configuration with the position that will dispose each thermoelectric element 10,11 are configured to rectangular on the surface of the heat release side group plate 14 that forms the plane.About a plurality of p type thermoelectric elements 10 and a plurality of n type thermoelectric element 11, the heat release side end face of described these thermoelectric elements utilizes scolding tin 12 to engage with heat release lateral electrode 13.
On the heat absorbing side end face of each thermoelectric element 10,11, disposing heat absorbing side insulated substrate 4, heat absorbing side electrode 5 and as the metal fine net 6 of web frame parts.Metal fine net 6 is the conductive components that constitute strain on thickness direction.The heat absorbing side end face of thermoelectric element contacts with metal fine net 6 having applied under the pressure status.Utilize such structure, absorb the deviation of the height of thermoelectric element, just can obtain stable conducting by the metal fine net.This metal fine net 6 is configured to stride across the heat absorbing side end face of one group of thermoelectric element 10,11.The heat absorbing side electrode 5 with box-structure of configuration bathtub shape makes it cover this metal fine net 6.By constituting the bathtub shape, when making metal fine net and thermoelectric element be difficult to break away from, make the surface and the heat release side insulated substrate of the bottom surface sections that constitutes the plane opposed, therefore, compare with situation about contacting, contact area is increased, help to increase heat absorption efficiency with web frame.
In addition, and only be that the structure that has woven fine rule is compared, help to reduce the resistance of electrod assembly.On heat absorbing side insulated substrate 4 and zone that heat absorbing side electrode 5 docks, the copper layer is being set individually.In addition, on whole of the opposed interarea of interarea that docks with the heat absorbing side electrode, the copper layer is being set, when improving heat absorption efficiency, is preventing the perk of heat absorbing side substrate 4.When this all puts into thermoelectric conversion arrangement in the stove with regard to having for soldering frame 9 on heat release side group plate 14, on heat absorbing side substrate 4, do not produce the effect of perk.
Heat absorbing side insulated substrate 4, heat absorbing side electrode 5 and utilize as the metal fine net 6 of web frame parts and cover 2 and heat release side group plate 14 are held and clamping one-tenth is exerted pressure on the direction of streaming current to the generation of vertically, promptly following electromotive force of thermoelectric element.That is, described lid 2 and heat release side group plate 14 are configured with separating opposed shape across thermoelectric element 10,11.Thermoelectric conversion arrangement 1 constitutes airtight box-structure body by lid 2, frame 9, heat release side group plate 14.The inner setting of box-structure body is become reduced atmosphere, even make and to apply big variations in temperature, the structure living deformation and failure of also having difficult labour in order to keep this atmosphere, utilizes the box-structure body sealing each thermoelectric element 10,11.
Utilize to connect in the heat release side group plate 14 and the through hole 16 that forms, the electromotive force that will produce in thermoelectric element 10,11 is fetched into the outside.Utilize scolding tin 17, and expose the outside wiring 18 that part on the interarea of the outer side of through hole 16 is being connected distribution on insulated substrate.In addition, on the outer surface of heat release side group plate 14, forming the metal coverlay 15 that is used to improve exothermicity.
In the present embodiment, for the serviceability temperature with the high temperature side of thermoelectric conversion arrangement is made as 600 ℃, the p type with ス Network Star テ Le ダ イ ト structure and the thermoelectric element of n type in thermoelectric element, have been used.Described p type and n type illustrate direction that the electric current that constitutes when heating produces and are reverse relation mutually for the gradient direction of heat.By utilizing heat release lateral electrode 13 and heat absorbing side electrode 5 to make p type and 10,11 series connection of n type thermoelectric element, just make the boost in voltage of electromotive force.That is,, take out electric current from outside wiring 18 alternately by p type thermoelectric element 10 and n type thermoelectric element 11.
The thermoelectric element converting means of present embodiment is for example by following operation manufacturing.
As shown in Figure 2, forming on the plane interarea on the heat release side group plate 14 of heat release lateral electrode 13, supplying with scolding tin 12 by the distributor pair and the thermoelectric element engaging portion of heat release lateral electrode 13.In the present embodiment, because the serviceability temperature of the heat release side of thermoelectric element converting means is made as 200 ℃, so heat release lateral electrode 13 has been used copper, heat release side group plate 14 has used Al
2O
3The ceramic substrate of basis material, the composition of scolding tin 12 has used the solder(ing) paste of Pb-8wt%Sn-2wt%Ag.Have again, under the situation of present embodiment, as the attachment of the soldering tin material that replaces scolding tin 12, as long as fusing point just can use no particular determination more than 200 ℃.
Have, the basis material of frame 9 and heat release side group plate 14 will consider that the balance of thermal discharge efficiency and heat-proof quality and air-tightness selectes again, but if integrate the power generation performance of thermoelectric conversion arrangement is significantly reduced, just can use.In addition, solder 8 can keep pottery and ceramic engagement state as long as bond strength is difficult to reduce in the serviceability temperature of the regulation of thermoelectric conversion arrangement, does not just have particular determination.In addition, not the structure of soldering frame 9 and heat release side group plate 14, also can constitute the structure of the box of bathtub shape certainly.
On the heat release side end face of thermoelectric element 10,11,, carried out the formation of Cu film in order to improve the zygosity of scolding tin 12 and thermoelectric element 10,11.After with Cu spatter film forming 2 μ m, electricity consumption is plated to film 18 μ m, and the whole thickness of film becomes 20 μ m.Have, grafting material is preferably along with the serviceability temperature change again.In addition,, can improve the connectivity with grafting material, just not have particular determination as long as the end face of thermoelectric element is handled the performance be difficult to damage thermoelectric element.
As shown in Figure 3, assembling jig 20 has and defines thermoelectric element 10,11 structure of the end face relative position that should exist one by one respectively, on assembling jig 20, for each limiting structure, be configured to the heat absorbing side end face and dock each thermoelectric element 10,11, determine the relative position that thermoelectric element 10,11 is mutual, make the heat release side group plate of having supplied with scolding tin 14 counter-rotatings shown in Fig. 2, cover on the heat release side end face of each thermoelectric element 10,11 on the assembling jig 20, become the state of Fig. 4.That is, on the heat release side end face of each thermoelectric element 10,11, by scolding tin 12 fixedly heat release lateral electrodes 13.
Heat by putting in the reflow ovens under fixing state, scolding tin 12 is just burn-on after the fusion.At this moment, in the junction surface that scolding tin 12 constitutes, absorb the height tolerance of thermoelectric element, make the heat absorbing side end face unanimity of thermoelectric element 10,11 by assembling jig 20, the flatness of the imaginary plane that is formed by a plurality of heat absorbing side end faces that become the composition surface improves, and can easily realize the structure with the sliding contact of heat absorbing side electrode 5, lid 2.
Below, as shown in Figure 5, configuration has connected the metal fine net 6 and the heat absorbing side electrode 5 of p type thermoelectric element 10 and n type thermoelectric element 11 on each thermoelectric element 10,11, make p type thermoelectric element 10 connect with n type thermoelectric element 11 electric property, in addition, as shown in Figure 6, configuration heat absorbing side insulated substrate 4 covers on these metal fine nets 6 and the heat absorbing side electrode 5 it.
Then, be provided with and cover 2, make it cover heat absorbing side insulated substrate 4, described lid 2 is provided with the blind hole 3 with the opening in the connection table, utilizes soldering in advance to become the Kovar alloy 7 of frame shape to weld to cover 2 and frame 9.In the present embodiment,, and make frame 9 little, used Kovar alloy with the thermal expansion difference of heat release side group plate 14 for the heat absorption capacity that on the blank of lid 2, obtains stipulating.
At last,, utilize lf blind hole 3 and block, just can access thermoelectric conversion arrangement with closed structure by thermoelectric conversion arrangement is placed in the reduced atmosphere.
In addition, make the distribution that takes out from converting means, just can improve the air-tightness of converting means by being arranged on the through hole 16 on the heat release side group plate 14.
Fig. 7 illustrates second execution mode of the thermoelectric conversion arrangement that the present invention relates to, and this thermoelectric conversion arrangement 21 is characterised in that does not prepare the insulating properties substrate in addition, and lid 2 directly contacts with heat absorbing side electrode 5.
Owing to compare with the execution mode shown in Fig. 1, can omit heat absorbing side insulated substrate 4, therefore, thermal resistance is little, can make the temperature of heat absorbing side end face of thermoelectric element approaching with the temperature of heat absorption object, can improve the generating efficiency of thermoelectric conversion arrangement.
Fig. 8 illustrates the 3rd execution mode of the thermoelectric conversion arrangement that the present invention relates to, and this thermoelectric conversion arrangement 22 is characterised in that, is used in the frame that the frame 23 that is divided into two on the short transverse and frame 24 constitute connection covers 71 and heat release side group plate 14.Use Al
2O
3Constitute and to cover 71 and heat release side group plate 14 on pottery, frame 23 and frame 24 weld, so for example constitute with Kovar alloy.
Chimeric lid 71 and heat release side group plate 14 in the interface of frame 23 and frame 24, described lid 71 has had by silver solder 8 solderings the metal part 72 of frame 23, described heat release side group plate 14 has had by silver solder 8 solderings the metal part 73 of frame 24, with laser welding frame 23 and frame 24 superposed part, in addition, by under reduced atmosphere with lf and clog blind hole 3, can realize hermetically-sealed construction.The for example formation such as Cu of metal part 72 and 73 usefulness.
In this embodiment, owing to be made as the structure of chimeric frame 23 and frame 24, therefore, when making thermoelectric conversion arrangement, available this chimericly comes the deviation of absorber element height and the deviation of welding assembly etc., can easily realize hermetically-sealed construction.
Fig. 9 illustrates the 4th execution mode of the thermoelectric conversion arrangement that the present invention relates to, this thermoelectric conversion arrangement 31 is characterised in that, the both ends of short transverse promptly cover 32 and the junction surface of heat release side group plate 14 in, constitute the frame of connection cover 32 and heat release side group plate 14 by the frame 33 of bending machining.By Al
2O
3Constitute and to cover 32 and heat release side group plate 14 on pottery, by welding metal for example Kovar alloy constitute frame 33.
On the other hand, utilize welding to carry out the bend of another end and engaging of lid 32 of frame 33.On lid 32, by solder 8, Kovar alloy ring 35 in soldering on the metal part 36 that is formed by Cu etc., and this Kovar alloy ring 35 and frame 33 are welded.At this moment, the end face of another end is towards the outside of thermoelectric conversion arrangement 31.Utilize this bending machining, can improve frame 33 and the contact area of covering 32.Weld pile up the Kovar alloy that covers on 32 and the joint interface irradiating laser of frame 33 in advance by soldering.
In this wise, by the jointing end face of the metal frame of bending machining, also improve bond strength easily in welding He in the soldering, its result helps to make the thickness attenuation of frame.
In the thermoelectric conversion arrangement 31 of Fig. 9, the structure of heat absorbing side electrode is also different.The vertical metal protuberance 34 of establishing on the opposed interarea in the inside with thermoelectric conversion arrangement in the interarea of lid 32 is to surround the opposed zone of heat absorbing side end face of thermoelectric element 10,11.Metal protuberance 34 good conductor such as handy Cu forms.Dispose metal fine net 6 on by this metal protuberance area surrounded, in addition, the heat absorbing side end face of thermoelectric element 10,11 is configured to be crimped on this metal fine net 6.Like this, utilize metal protuberance 34 to suppress the skew of metal fine net 6 and thermoelectric element 10,11, can reduce loose contact.
Figure 10 illustrates the 5th execution mode of the thermoelectric conversion arrangement that the present invention relates to, and this thermoelectric conversion arrangement 41 vertically is provided with insulating element ceramic wafer 42 in the inner space of box-structure body.Ceramic wafer 42 is configured to be present between the capacity cell 10,11 on the heat release lateral electrode 13 that electric property ground links thermoelectric element 10,11.The height setting of ceramic wafer arrives heat absorbing side electrode 5, is less than on the height of lid and heat absorbing side insulated substrate.
Figure 11 illustrates the 6th execution mode of the thermoelectric conversion arrangement that the present invention relates to, and this thermoelectric conversion arrangement 51 replaces ceramic wafer 42, uses a plurality of glass marbles 52 as the particle size distribution with 0.18mm～0.22mm of insulating element.Glass marble fills up the inner space of box-structure body.Preferably get rid of as much as possible and be present in the gap that produces mutually by glass marble, be set at reduced atmosphere.By using glass marble 52, can omit the operation that disposes insulating element respectively, the manufacturing transfiguration is easy.
Figure 12 illustrates the 7th execution mode of the thermoelectric conversion arrangement that the present invention relates to.The structure of the thermoelectric conversion arrangement 61 of present embodiment is, makes the interval between the thermoelectric element that is surrounded by heat absorbing side electrode 5, than this thermoelectric element with by short with the interval of the thermoelectric element of the heat absorbing side electrodes surrounding of these heat absorbing side electrode 5 adjacency.Specifically, by the interval of the p type thermoelectric element 10b and the n type thermoelectric element 11b of the 5 electric property connections of heat absorbing side electrode, than short by the interval of the p type thermoelectric element 10b of heat release lateral electrode 13 electric property connections and n type thermoelectric element 11a.Utilize this structure, when guaranteeing heat absorbing side electrode 5 insulating properties each other of adjacency, the packing density of thermoelectric element is improved, the power generation performance of per unit area is improved.As the material of frame 9, in order to reduce, increase to each thermoelectric element stream heat to frame 9 stream heats, preferably pyroconductivity is little.At this,, use Kovar alloy with lid 2 identical material in order to make and to cover 2 welding easy.As shown in figure 12, when the composition surface with solder 8 that makes frame 9 becomes section and is the triangular chamfered shape,, bond strength is improved by on solder 8, forming and the corresponding fillet of chamfer shape.When improving bond strength, making frame 9 and solder 8 become such shape is because suppose at frame 9 and solder 8 on the horizontal direction at this figure under the situation of chap that only the heat of this part becomes and conducts easily, in addition, also become the reason that causes device self to maximize.Have again,,, just do not have particular determination as long as zygosity does not reduce in the serviceability temperature of thermoelectric conversion arrangement about the material of solder 8.
In addition, on frame 9, the folding part is set, this folding part with lid 2 contact portion on folding laterally, by enlarging the area of contact-making surface frame 9 and lid 2, just soldering frame 9 and lid 2 easily.In addition, by with the folding part and the end of covering 2 of laser,, like this, guarantee air-tightness with regard to carrying out visual examination easily about welded condition from outside weldings frame 9.Have, frame 9 can utilize the cut of machining to make again, as long as but can be processed into and above-mentioned same shape particular determination processing method not just.
In addition, by bend being set at lid on 2, this bend is crooked on the direction of exerting pressure with the inboard of the bonding part of frame 9, makes cover 2 and have elasticity, just can one side to heat absorbing side substrate 4 thrust caps 2, Yi Bian the assembling when easily carrying out welding with frame 9.
The serviceability temperature of setting the heat release side is 200 ℃, uses copper in electrode, uses Si in heat release side group plate 14
3N
4The ceramic substrate of basis material uses the Pb-8Sn-2Ag solder(ing) paste in soldering tin material.Have again, scolding tin if fusing point more than 200 ℃, its material of particular determination not just.
Apply the outside wiring 18 that takes out by through hole 16 from thermoelectric conversion arrangement by insulating resin 19.By in the drawing of distribution, utilizing through hole 16, just guarantee the air-tightness of thermoelectric conversion arrangement easily.In addition, the height that is positioned at by each outside that makes metal forming 15 and insulating resin 19 overlaps, and reduces the contact heat resistance when contacting with the thermal source of heat abstractor etc.
As described above, in the thermoelectric conversion arrangement of present embodiment, by being set at heat absorbing side electrode on the heat-absorbent surface that is installed in a plurality of p type thermoelectric elements and n type thermoelectric element for the maintenance structure of covering crimping slidably, even lid is pressed different separately ratio thermal expansions with thermoelectric element, also can prevent the damage of junction surface and thermoelectric element, compare with existing thermoelectric conversion arrangement, a kind of thermoelectric conversion arrangement with good reliability can be provided.
In addition, by use the metal fine with web frame on the heat absorbing side electrode, therefore the height tolerance of the element in the time of can absorbing the converting means assembling, can provide a kind of zygosity to improve the thermoelectric conversion arrangement that reliability is high.
In addition, be hermetically-sealed construction by making thermoelectric conversion arrangement, can prevent the oxidation at thermoelectric element and junction surface and the deterioration that causes, can provide a kind of reliability high thermoelectric conversion arrangement.
By by lid 2 and heat release side group plate 14 clamping heat absorbing side insulated substrates 4, heat absorbing side electrode 5 and metal fine net 6, even thermal deformation behind the heating converting means, also can prevent from the contact-making surface of each thermoelectric element 10,11 and heat absorbing side electrode 5, to produce and slide the breakage of producing component etc.
By on the periphery of heat absorbing side electrode 5 protuberance being set, this protuberance can prevent to break away from from thermoelectric element heat-absorbent surface side end face when assembling and during thermal deformation and the contacts side surfaces of thermoelectric element.
Utilize metal fine net 6, the assembling deviation when being absorbed the height tolerance of thermoelectric element and having been engaged thermoelectric element by scolding tin 12 with heat release side group plate by the metamorphosis of web frame just can apply plus-pressure to whole thermoelectric element.In addition, by being combined in heat absorbing side electrode 5 and the metal fine net 6 that is provided with protuberance on the periphery, can prevent coming off of metal fine net 6, assembleability has also improved.Also can form heat absorbing side electrode 5 with web frame.
Heat absorbing side electrode 5 needs electric separately property independent, but will realize hermetically-sealed construction, just needs to cover 2 and the welding of frame 9, and preferably covering 2 from the viewpoint of operability is metals.Therefore, by between lid 2 and heat absorbing side electrode 5, heat absorbing side insulated substrate 4 being set, can guarantee insulation.In addition, by between each thermoelectric element 10,11, having disposed ceramic wafer 42, can improve the insulating properties of 10,11 of thermoelectric elements.At this,, forming the deviation of the thickness direction in the time of can expecting to absorb the converting means assembling by on two faces of heat absorbing side insulating properties substrate, metal forming being set from covering 2 in the heat passage of each thermoelectric element 10,11.In addition, by on lid 2 and contact-making surface heat absorbing side electrode 5 and heat absorbing side electrode 5 and contact-making surface lid 2, forming the insulating properties film, can omit heat absorbing side insulating properties substrate 4, simple in structure, aspect hot, the temperature difference of the heat absorbing side end face of heat absorption object and thermoelectric element is reduced, can improve generating efficiency as thermoelectric conversion arrangement.
Limit the insulating element of the position of thermoelectric element by configuration between adjacent thermoelectric element, even thermoelectric element is applied the big skew that produces owing to going out unexpectedly, also can prevent and the contacting of the thermoelectric element of adjacency, can prevent from the disengaging of the heat absorbing side electrode that slides.This insulating element can be a liquid, also can be solid, but is being filled by material under the situation of inner space, because the thermal expansion of this material, the destruction of welding portion and poor flow etc. probably take place, and therefore, preferably constitute the structure of having filled powder or a plurality of particle-like substances.Preferably this powder and particle-like substance are the structures of mutual not fusion in the working temperature zone of thermoelectric conversion arrangement.In addition, under the situation that is made as the wall construction body, only preferably constitute with the parts that constitute the box structure body in some parts or a continuous plane engagement of the box structure body of the discontinuous binding in a plurality of planes.
This thermoelectric conversion arrangement is set at 600 ℃ with the serviceability temperature of high temperature side, and therefore, thermoelectric element has used p type and the n type thermoelectric element with ス Network Star テ Le ダ イ ト structure.In 600 ℃ air atmosphere, the oxidation of ス Network Star テ Le ダ イ ト thermoelectric element, performance reduces.Therefore,, can realize reduced atmosphere, can prevent the oxidation of each thermoelectric element 10,11, thermoelectric conversion arrangement 1 can be set in all places by being made as the hermetically-sealed construction that constitutes by lid 2, frame 9 and heat release side group plate 14.
By making the interval between the thermoelectric element that surrounds by heat absorbing side electrode 5, than this thermoelectric element with by short with the interval of the thermoelectric element of the heat absorbing side electrodes surrounding of heat absorbing side electrode 5 adjacency, can guarantee heat absorbing side electrode 5 insulating properties each other of adjacency, the density that is provided with of thermoelectric element is improved, the power generation performance of per unit area is improved.
Be set at chamfer shape by the composition surface that makes frame 9, the frame 9 and the bond strength of solder 8 are improved with solder 8.
By frame 9 with lid 2 contact portion on be provided with folding laterally folding part, enlarged the area of frame 9 with the contact-making surface of lid 2, therefore, can make the welding of frame 9 and lid 2 easy.
By with the end of laser from outside weldings frame 9 and folding part and lid 2, carry out visual examination easily about welded condition, can guarantee air-tightness thus.
By bend is set, crooked on the lid directions of exerting pressure with the inboard of bonding part frame 92, lid 2 just has elasticity, therefore, can be on one side to heat absorbing side substrate 4 thrust caps 2, easily carry out the assembling when frame 9 welded on one side.
Have again, described deformable structure member, be the parts that when exert pressure in the surface, increase with the contact area of thermoelectric element after the areal deformation by thermoelectric element, for example can be suitable for except mesh members by clathrate, tabular etc. parts concavo-convex, that form by mold pressing.
Claims (29)
1. thermoelectric conversion arrangement is characterized in that having:
Wiring substrate;
A plurality of thermoelectric elements, an one end face engages with described wiring substrate;
A plurality of electrod assemblies, it is configured to move with another end face of above-mentioned a plurality of thermoelectric elements and contacts;
Cap and bonded block, it keeps above-mentioned a plurality of thermoelectric element and above-mentioned a plurality of electrod assembly, and described cap is configured to make pressure to be applied to described focus element.
2. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, above-mentioned electrod assembly has the protuberance of the position that limits above-mentioned thermoelectric element, and described protuberance is arranged to surround the zone that above-mentioned thermoelectric element is crimped.
3. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, above-mentioned electrod assembly is configured to be electrically connected in series with above-mentioned thermoelectric element.
4. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, described electrod assembly comprise exterior part and be arranged on above-mentioned thermoelectric element and the said external part between the deformable structure member that constitutes by conductive material.
5. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, the insulating element that limits the position of thermoelectric element is configured in respectively between the above-mentioned thermoelectric element.
6. thermoelectric conversion arrangement as claimed in claim 1, it is characterized in that, interval between the thermoelectric element that surrounds by above-mentioned electrod assembly, than this thermoelectric element with by and another thermoelectric element of surrounding of another electrod assembly of this electrod assembly adjacency between the interval lack.
7. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, above-mentioned bonded block is the bonded block that utilizes solder to engage with above-mentioned wiring substrate, forms chamfer shape with above-mentioned bonded block with composition surface solder.
8. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, is provided with folding laterally bending on above-mentioned bonded block and contact portion above-mentioned cap.
9. thermoelectric conversion arrangement as claimed in claim 1 is characterized in that, is provided with along the bend of the direction bending of pressure at above-mentioned cap.
10. thermoelectric conversion arrangement comprises:
Wiring substrate;
A plurality of thermoelectric elements;
A plurality of fixed engagement portion is connected an end face of described a plurality of thermoelectric elements with described wiring substrate;
A plurality of removable junction surfaces are connected another end faces of described a plurality of thermoelectric elements with a plurality of electrod assemblies;
Pressure housing, it keeps described a plurality of thermoelectric element and described a plurality of electrod assembly.
11. thermoelectric conversion arrangement as claimed in claim 10 is characterized in that, described fixed engagement portion comprises solder bonds portion, and described removable junction surface does not comprise solder bonds portion.
12. the manufacture method of a thermoelectric conversion arrangement comprises:
An end face of a plurality of thermoelectric elements is engaged with wiring substrate;
A plurality of electrod assemblies are positioned to other end sliding contact with described a plurality of thermoelectric elements;
Externally-arranged cap at described electrod assembly; And
By bonded block cap is combined with wiring substrate, thereby between cap and wiring substrate, exert pressure.
13. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
Between described thermoelectric element and described electrod assembly, settle the deformable structure member that constitutes by electric conducting material.
14. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
Between thermoelectric element, settle the insulating element of the position that limits thermoelectric element.
15. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 is characterized in that:
Pottery is used for described wiring substrate, and Kovar alloy is used for described cap, and pottery is used for described bonded block, and this manufacture method also comprises:
By solder in conjunction with described bonded block and wiring substrate; And
By solder and Kovar alloy in conjunction with described bonded block and cap.
16. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
The composition surface of bonded block and wiring substrate is formed chamfer shape; And
Combine with wiring substrate by the composition surface of solder bonded block.
17. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
Described thermoelectric element is placed on the wiring substrate, makes interval between the thermoelectric element that surrounds by above-mentioned electrod assembly, than this thermoelectric element with by and another thermoelectric element of surrounding of another electrod assembly of this electrod assembly adjacency between the interval lack.
18. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
Open closed hole for described cap;
Thermoelectric device is placed in the reduced atmosphere, at cap described in the described thermoelectric device and wiring substrate by the bonded block combination; And
Closed sealing hole under described reduced atmosphere.
19. the manufacture method of thermoelectric conversion arrangement as claimed in claim 18 is characterized in that: described closed hole is by the laser closure.
20. the manufacture method of thermoelectric conversion arrangement as claimed in claim 12 also comprises:
Pass wiring substrate and form through hole, thereby take out the electric power that in thermoelectric element, produces so that pass through lead.
21. a thermoelectric conversion arrangement comprises:
The wiring substrate of making by pottery;
A plurality of thermoelectric elements, an one end face engages with described wiring substrate;
A plurality of electrod assemblies, it is configured to another end face sliding contact with above-mentioned a plurality of thermoelectric elements;
Cap is made by Kovar alloy, is placed in the outside of described electrod assembly; And
Bonded block combines with wiring substrate by solder, and combines with cap by solder and Kovar alloy, thereby exerts pressure between cap and wiring substrate.
22. a thermoelectric conversion arrangement comprises:
Wiring substrate;
A plurality of thermoelectric elements, an one end face engages with described wiring substrate;
A plurality of electrod assemblies, it is configured to another end face sliding contact with above-mentioned a plurality of thermoelectric elements;
Cap is placed in the outside of described electrod assembly;
Bonded block combines wiring substrate with cap, thereby exerts pressure between cap and wiring substrate; And
Closed hole is placed on the cap, and is closed in reduced atmosphere.
23. a thermoelectric conversion arrangement comprises:
Wiring substrate;
A plurality of thermoelectric elements, an one end face engages with described wiring substrate;
A plurality of electrod assemblies, it is configured to another end face sliding contact with above-mentioned a plurality of thermoelectric elements;
Cap is placed in the outside of described electrod assembly;
Bonded block combines wiring substrate with cap, thereby exerts pressure between cap and wiring substrate; And
Electric through-hole is placed on the wiring substrate, passes wiring substrate by lead, thereby takes out the electric power that produces in thermoelectric element.
24. any the described thermoelectric conversion arrangement as among the claim 21-23 is characterized in that: above-mentioned electrod assembly has the protuberance of the position that limits above-mentioned thermoelectric element, and described protuberance is arranged to surround the zone that above-mentioned thermoelectric element is crimped.
25. any the described thermoelectric conversion arrangement as among the claim 21-23 is characterized in that, described electrod assembly comprise exterior part and be arranged on above-mentioned thermoelectric element and the said external part between the deformable structure member that constitutes by conductive material.
26. any the described thermoelectric conversion arrangement as among the claim 21-23 is characterized in that, the insulating element that limits the position of thermoelectric element is configured in respectively between the above-mentioned thermoelectric element.
27. thermoelectric conversion arrangement as claimed in claim 24, it is characterized in that, interval between the thermoelectric element that surrounds by above-mentioned electrod assembly, than this thermoelectric element with by and another thermoelectric element of surrounding of another electrod assembly of this electrod assembly adjacency between the interval lack.
28. any the described thermoelectric conversion arrangement as among the claim 21-23 is characterized in that, above-mentioned bonded block is the bonded block that utilizes solder to engage with above-mentioned wiring substrate, forms chamfer shape with above-mentioned bonded block with composition surface solder.
29. any the described thermoelectric conversion arrangement as among the claim 21-23 is characterized in that, is provided with along the bend of the direction bending of pressure at above-mentioned cap.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP202121/2003 | 2003-07-25 | ||
| JP2003202121 | 2003-07-25 | ||
| JP090250/2004 | 2004-03-25 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100951624A Division CN100449811C (en) | 2003-07-25 | 2004-07-23 | Thermoelectric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101320781A true CN101320781A (en) | 2008-12-10 |
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ID=40180713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101316487A Pending CN101320781A (en) | 2003-07-25 | 2004-07-23 | Thermoelectric device |
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| Country | Link |
|---|---|
| CN (1) | CN101320781A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097685A (en) * | 2010-09-09 | 2013-05-08 | 排放技术有限公司 | Thermoelectric module for a thermoelectric generator of a vehicle with a sealing element |
| CN104685646A (en) * | 2012-10-05 | 2015-06-03 | 日立化成株式会社 | Thermoelectric generator |
| CN114909818A (en) * | 2022-07-18 | 2022-08-16 | 南方科技大学 | Tin separating and combining device for nuclear heat insulation demagnetization refrigeration system |
-
2004
- 2004-07-23 CN CNA2008101316487A patent/CN101320781A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097685A (en) * | 2010-09-09 | 2013-05-08 | 排放技术有限公司 | Thermoelectric module for a thermoelectric generator of a vehicle with a sealing element |
| CN103097685B (en) * | 2010-09-09 | 2015-12-02 | 排放技术有限公司 | With the electrothermal module for vehicle thermoelectric generator of seal element |
| CN104685646A (en) * | 2012-10-05 | 2015-06-03 | 日立化成株式会社 | Thermoelectric generator |
| CN114909818A (en) * | 2022-07-18 | 2022-08-16 | 南方科技大学 | Tin separating and combining device for nuclear heat insulation demagnetization refrigeration system |
| CN114909818B (en) * | 2022-07-18 | 2022-10-04 | 南方科技大学 | Tin separating and combining device for nuclear heat insulation demagnetization refrigeration system |
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