CN113691165B - Industrial integrated thermoelectric power generation device - Google Patents
Industrial integrated thermoelectric power generation device Download PDFInfo
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- CN113691165B CN113691165B CN202111091456.XA CN202111091456A CN113691165B CN 113691165 B CN113691165 B CN 113691165B CN 202111091456 A CN202111091456 A CN 202111091456A CN 113691165 B CN113691165 B CN 113691165B
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- 238000010248 power generation Methods 0.000 title claims abstract description 67
- 238000001816 cooling Methods 0.000 claims abstract description 141
- 239000000758 substrate Substances 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000498 cooling water Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
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- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000009776 industrial production Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005678 Seebeck effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
An industrial integrated thermoelectric power generation device belongs to the technical field of thermoelectric power generation. The industrial integrated thermoelectric power generation device comprises a plurality of thermoelectric modules, a cooling substrate and a water cooling plate; one surface of the cooling substrate is provided with a plurality of fixing grooves for placing thermoelectric modules, the other surface of the cooling substrate is provided with a plurality of wire grooves, and one surface of the cooling substrate provided with the wire grooves is connected with the water cooling plate; wherein, the cold junction setting of a plurality of thermoelectric modules is in corresponding fixed recess, and the hot junction setting of thermoelectric modules is outside fixed recess. The device can enable the thermoelectric module to work stably for a long time, and is provided with a high-efficiency cooling system, so that the output power of the module is greatly improved. Based on the thermal environment condition, the working process of the thermoelectric module is considered in many aspects, and the provided industrial integrated thermoelectric power generation device has high practical value.
Description
Technical Field
The invention relates to the technical field of thermoelectric power generation, in particular to an industrial integrated thermoelectric power generation device.
Background
The thermoelectric conversion technology can directly convert heat into electricity based on the Seebeck effect, and has higher stability, lower manufacturing cost and longer service life compared with the traditional power generation technology because no mechanical moving parts are arranged in the thermoelectric conversion technology. In addition, the thermoelectric module has the characteristics of small volume, no pollution, no noise and the like, so that the thermoelectric module is widely applied to the field of industrial waste heat recovery.
Most of the thermoelectric technology researches at present are optimized for part of structures of thermoelectric power generation systems, such as: a thermoelectric module (ZL 201310560019.7), a thermoelectric module, a heat conversion device (ZL 201480046526.1) including the thermoelectric module, and the like do not take into consideration the power generation performance, safety performance, and practical performance of the entire thermoelectric system in all directions.
On the premise of not installing a cooling device, the traditional thermoelectric module cannot form a large temperature gradient inside, so that the actual output power is small. Some conventional air cooling devices are not suitable for cold-end heat dissipation of thermoelectric modules due to large volume, low cooling efficiency, high cost and the like. The problem of matching the water cooling device with the thermoelectric module is not solved well.
Disclosure of Invention
Aiming at the problems of high use cost, low output power, low field practicability and the like of the conventional thermoelectric conversion technology, the invention provides the industrial integrated thermoelectric power generation device, which enables a thermoelectric module to stably work for a long time and is provided with a high-efficiency cooling system, so that the output power of the module is greatly improved. The invention considers the working process of the thermoelectric module in many aspects based on the thermal environment condition, and the provided industrial integrated thermoelectric power generation device has high practical value.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention relates to an industrial integrated thermoelectric power generation device, which comprises a plurality of thermoelectric modules, a cooling substrate and a water cooling plate; wherein, one side of the cooling substrate is provided with a plurality of fixing grooves for placing thermoelectric modules, the other side of the cooling substrate is provided with a plurality of wire grooves, and one side of the cooling substrate provided with the wire grooves is connected with the water cooling plate; wherein, the cold junction setting of a plurality of thermoelectric modules is in corresponding fixed recess, and the hot junction setting of thermoelectric modules is outside fixed recess.
The industrial integrated thermoelectric power generation device further comprises a baffle, and when the industrial integrated thermoelectric power generation device is in a non-contact working mode, the hot end of the thermoelectric module is fixed through the baffle, and the baffle is connected with the cooling substrate.
Further, in the industrial integrated thermoelectric power generation device, a plurality of thermoelectric modules are arranged in an array.
Further, the cooling substrate is made of aluminum alloy materials.
Further, the cooling substrate and the water cooling plate are bonded through heat conduction silicone grease, so that adverse effects caused by contact thermal resistance are reduced.
Further, the cooling substrate is provided with end faces of a plurality of fixing grooves, and a hot end boss is arranged on the cooling substrate and used for supporting the baffle plate, so that pressure of the baffle plate on the hot end of the thermoelectric module is reduced; on the terminal surface that the cooling substrate was provided with the metallic channel, the boss between the adjacent metallic channel is the cold junction boss of cooling substrate to the position of cold junction boss corresponds with the position of fixed recess, is provided with the wire through-hole in the one end of fixed recess, extends intercommunication metallic channel.
The water cooling plate is made of aluminum alloy materials, and a cooling water flow passage is arranged in the water cooling plate and is used for radiating cold ends of the thermoelectric modules.
Further, the cooling water flow passage position of the water cooling plate corresponds to the cold end boss position of the cooling substrate.
The water cooling plate is preferably square.
The grooves for placing the thermoelectric modules are filled with heat-conducting silicone grease.
The baffle is preferably a barrier type baffle and is used for fixing the position of the thermoelectric module and preventing falling off.
The invention relates to an industrial integrated thermoelectric power generation device, which has the advantages that:
1) According to the industrial integrated thermoelectric power generation device provided by the invention, water cooling is selected for heat dissipation, so that the cold end of the thermoelectric module can be maintained in a low-temperature state for a long time, a large temperature gradient is generated in the module, and the output power is improved;
2) According to the industrial integrated thermoelectric power generation device provided by the invention, the thermoelectric module and the cooling substrate are connected by adopting the heat conduction silicone grease, two working modes of contact or non-contact can be adopted according to the actual condition of a field heat source, the hot end of the thermoelectric module is provided with the barrier type baffle, and when the non-contact working mode is adopted, the position of the thermoelectric module can be fixed to prevent falling;
3) The plane pattern of the water cooling plate is square, so that the direction of the water inlet and the water outlet can be changed randomly in the use process, a plurality of power generation devices can be connected conveniently, and large-area installation is facilitated.
Compared with the prior art, the industrial integrated thermoelectric power generation device has the beneficial effects that:
the industrial integrated thermoelectric power generation device provided by the invention has small volume and size, and each component part uses a metal material with higher strength, so that the device can be applied to various industrial production lines to perform stable work; because the industrial production line environment is complex, the thermoelectric power generation device is integrally of a closed structure, so that the damage of partial metal particles in a factory building to an internal circuit can be prevented, the high-temperature damage of all connecting wires in the device can be avoided, and the power generation device can be ensured to stably operate for a long time.
Drawings
FIG. 1 is a schematic view of the overall structure and an exploded view of an industrial integrated thermoelectric power generation device according to the present invention; wherein a is a baffle, b is a thermoelectric module, c is a cooling substrate, and d is a water cooling plate;
FIG. 2 is a baffle structure; wherein, (a) is an upper end surface view of the baffle, (b) is a lower end surface view of the baffle, and (c) is an assembly schematic diagram of the baffle and the thermoelectric module; a-1 is the distance between adjacent baffle rods, a-2 is the baffle rod, a-3 is a main fixed column, and a-4 is an auxiliary fixed column;
FIG. 3 is a schematic structural view of a thermoelectric module structure; (a) is a whole combined schematic diagram, and (b) is an internal structure; b-1 is an alumina insulating plate, b-2 is a copper conducting strip, b-3 is a P-type thermoelectric arm, b-4 is an N-type thermoelectric arm, and b-5 is a sealing layer;
FIG. 4 is a schematic diagram of a structure for cooling a substrate; a) is a hot end schematic view of a cooling substrate, (b) is a cold end schematic view of the cooling substrate, and (c) is a cross-sectional view of the cooling substrate; c-1 is a fixed groove, c-2 is a wire through hole, c-3 is a hot end boss, c-4 is a cold end boss, and c-5 is a wire groove;
FIG. 5 is a water cooling plate structure; (a) A front view of the water-cooling plate, and (b) a side view of the water-cooling plate; d-1 is the water inlet/outlet of the water cooling plate.
Detailed Description
The invention is further elucidated below in connection with an embodiment and the drawing of the description.
Example 1
The industrial production environment is complex, the thermoelectric module cannot be exposed in the production line for a long time, and the module is small enough to generate a large temperature gradient for industrial thermoelectric conversion. Based on the above factors, the following embodiments of the present invention provide an industrial integrated thermoelectric power generation device, which not only can improve the power generation performance of a thermoelectric module under working conditions, but also can maintain the efficient operation of the module for a long time.
An integral structure schematic diagram and an explosion diagram of the industrial integrated thermoelectric power generation device are shown in fig. 1. The method comprises the following steps: baffle a, thermoelectric module b, cooling substrate c and water cooling plate d. The industrial field production environment is complex, and the structure size of the thermoelectric power generation device is too large, so that the on-site installation and debugging are not facilitated, and the cooling substrate in the industrial integrated thermoelectric power generation device is provided with the fixing grooves, the fixing grooves are arranged in a 6 multiplied by 6 structure, and 36 thermoelectric modules b can be installed in the inner part at most. In general, the industrial heat source has a wide temperature range, and the thermoelectric module b cannot be directly installed on the surface of some high-temperature heat sources, and can only generate electricity by absorbing the waste heat in the form of radiant heat. For the above reasons, an industrial integrated thermoelectric power generation device of the present invention is provided with a baffle plate a.
The structure of a baffle plate a used by the industrial integrated thermoelectric power generation device is shown in figure 2. In order to prevent the heat absorption performance of the hot end of the thermoelectric module b from being affected, the baffle plate a adopts a barrier type structure, and the composition comprises: a gear lever a-2, a main fixed column a-3 and an auxiliary fixed column a-4; the baffle plate comprises a baffle plate a, a plurality of baffle rods a-2, a main fixing column a-3, a subsidiary fixing column a-4 and a main fixing column a-3, wherein the baffle plates a-2 are uniformly arranged and parallel to each other to form a barrier structure, gaps among the baffle plates are the distance a-1 between the adjacent baffle plates, the main fixing column a-3 is parallel to the baffle plates a-2 and is arranged in the center of the baffle plate a, and the subsidiary fixing column a-4 is vertically connected with the main fixing column a-3 to fix the baffle plates; in order for the barrier a to secure each thermoelectric module b, the distance a-1 between adjacent bars is required to be smaller than the length and width of the thermoelectric module b, and the difference between the two is not more than 1mm. When the non-contact operation mode is adopted, the positions of all elements in the thermoelectric generation device can be offset, so that a main fixing column a-3 and an auxiliary fixing column a-4 are arranged at the center of the baffle plate a. The main fixing column a-3 is in direct contact with the edge of the thermoelectric module b, so that the stress is more uniform, and the baffle plate a can not shift transversely. The auxiliary fixing columns a-4 are arranged in the transverse interval of the thermoelectric module b, so that the baffle plate a does not deviate longitudinally.
The structure of a thermoelectric module b adopted by the industrial integrated thermoelectric power generation device is shown in fig. 3 (a). The thermoelectric module b used in the invention is a commercial module, the specific model is SP1848, and the components are as follows: alumina insulation board b-1, copper conducting strip b-2, P type thermoelectric arm b-3, N type thermoelectric arm b-4 and sealing layer b-5. Wherein the P-type thermoelectric arms b-3 and the N-type thermoelectric arms b-4 are alternately arranged, wherein one end of the P-type thermoelectric arm b-3 is connected with one end of the N-type thermoelectric arm b-4 adjacent to one side of the P-type thermoelectric arm b-3 by a copper conducting sheet b-2, the other end of the P-type thermoelectric arm b-3 is connected with one end of the other adjacent N-type thermoelectric arm b-4 adjacent to the other side by another copper conducting sheet b-2, and an alumina insulating plate b-1 at the upper end and an alumina insulating plate b-1 at the lower end are arranged to wrap the copper conducting sheet b-2, the P-type thermoelectric arm b-3 and the N-type thermoelectric arm b-4; the specific connection mode is shown in fig. 3 (b);
the P-type thermoelectric arm b-3 and the N-type thermoelectric arm b-4 are made of bismuth telluride, and are common thermoelectric materials. The module needs to be isolated from the environment because metal dust may occur within the industrial environment, resulting in shorting or damage to the thermoelectric module b. In fig. 3, b-5 is a sealing layer of the thermoelectric module b, and the sealing layer b-5 completely covers the edge of the module by adopting a vulcanized silicone rubber material, wherein the material can bear the high temperature of 800 ℃ at most and can cope with various high-temperature environments.
The structure of a cooling substrate c used in an industrial integrated thermoelectric power generation device according to the present invention is shown in fig. 4 (a) to 4 (c). The cooling substrate c comprises the following components: the fixing groove c-1, the wire through hole c-2, the hot end boss c-3, the cold end boss c-4 and the wire groove c-5. Wherein, 36 fixing grooves c-1 are arranged at the hot end of the cooling substrate c, and a 6 multiplied by 6 arrangement structure is adopted. The fixing groove c-1 is used for fixing the position of the thermoelectric module b and preventing the thermoelectric module b from shifting in the use process. Because the hot end of the cooling substrate c and the cold end of the thermoelectric module b are rough surfaces, larger contact thermal resistance exists on the contact surface of the cooling substrate c and the thermoelectric module b. In order to reduce the adverse effect of contact thermal resistance, it is necessary to uniformly coat heat-conducting silicone grease on the contact surface of the thermoelectric module b and the cooling substrate c. The thermoelectric module b has a higher high temperature limit than the connection wires, so that it is necessary to control the surface temperature of the connection wires to maintain the stability in use. A wire through hole c-2 is arranged at one end of a fixing groove c-1 of the cooling substrate c, the wire through hole c-2 can directly transfer a connecting wire from the hot end of the cooling substrate c to the cold end of the cooling substrate c, and the connecting wire is arranged on a wire groove and is subjected to temperature control through a water cooling plate d. The cold end of the cooling substrate c is provided with a wire groove c-5 for fixing the position of the connecting wire, so that the connecting wire is in direct contact with the water cooling plate d, and the connecting wire can be in a low-temperature state for a long time. The two ends of the thermoelectric module b are made of alumina ceramic materials, so that the brittleness is high, and when the local pressure of the end face of the thermoelectric module b is overlarge, the phenomenon of damage can occur. The four corners corresponding to the cooling substrate c are provided with hot end bosses c-3 for reducing the pressure generated by the baffle plate a on the hot end of the thermoelectric module b, and the horizontal height of the hot end bosses c-3 is 0.5mm lower than that of the thermoelectric module b, so that the influence on the tightening capacity of the baffle plate a is avoided. The cooling substrate c is provided with a cold end boss c-4 for improving the cold end temperature control capability of the thermoelectric module b and keeping the temperature of the cold end of the module uniform. The cold end boss c-4 of the cooling substrate c corresponds to the cold end position of the thermoelectric module b, and the design can reduce the cooling efficiency of other areas of the cooling substrate c, so that the water cooling plate d can only keep high-efficiency cooling for the thermoelectric module b.
The structure of a water cooling plate d adopted by the industrial integrated thermoelectric power generation device is shown in figure 5. The inside of the water cooling plate d is provided with 12 cooling water channels in total, and the cooling water channels at the cold end of each thermoelectric module b are kept at 2. The cooling water flow channel and the cooling end boss c-4 in the cooling substrate c are kept at the same position, so that the cooling efficiency of the water cooling plate d on the thermoelectric module b is more sufficient. The water inlet/outlet d-1 of the water cooling plate d is arranged on the same side, so that the arrangement of the cooling water pipes is convenient in the use process. The industrial integrated thermoelectric power generation device greatly improves the industrial applicability of the thermoelectric module b and provides an effective solution for industrial thermoelectric conversion technology by a method for configuring various auxiliary elements for the thermoelectric module b.
Example 2
The invention relates to a thermoelectric module used by an industrial integrated thermoelectric power generation device, which is commercial SP1848 and comprises an alumina insulation board b-1, a copper conducting sheet b-2, a P-type thermoelectric arm b-3, an N-type thermoelectric arm b-4 and a sealing layer b-5. Wherein the P-type thermoelectric arms b-3 and the N-type thermoelectric arms b-4 are alternately arranged, wherein one end of the P-type thermoelectric arm b-3 is connected with one end of the N-type thermoelectric arm b-4 adjacent to one side thereof by a copper conductive sheet b-2, the other end of the P-type thermoelectric arm b-3 is connected with one end of the other adjacent N-type thermoelectric arm b-4 adjacent to the other side by another copper conductive sheet b-2, and an alumina insulating plate b-1 provided with an upper end and an alumina insulating plate b-1 provided with a lower end wrap the copper conductive sheet b-2, the P-type thermoelectric arm b-3 and the N-type thermoelectric arm b-4 therein.
Wherein, the length and width of the alumina insulating plate b-1 are 40mm, and the height is 0.5mm; the P-type thermoelectric arm b-3 and the N-type thermoelectric arm b-4 are rectangular solids with the length and the width of 1.3mm and the height of 1.8 mm; the copper conductive sheet b-2 was a rectangular parallelepiped having a length of 3.1mm, a width of 1mm, and a height of 0.1 mm. The thermoelectric module has small overall structure size, can be used for various working environments, is convenient to install and is simple to use.
An industrial integrated thermoelectric power generation device includes a plurality of thermoelectric modules, a cooling substrate, a water-cooled plate, and a baffle. Wherein, one side of the cooling substrate is provided with a plurality of fixing grooves for placing thermoelectric modules, the other side of the cooling substrate is provided with a plurality of wire grooves, and one side of the cooling substrate provided with the wire grooves is connected with the water cooling plate; the cold ends of the thermoelectric modules are arranged in the corresponding fixing grooves, the hot ends of the thermoelectric modules are arranged outside the fixing grooves, and the hot ends of the thermoelectric modules are fixed through the baffle plates.
In this embodiment, the cooling substrate is designed as an integral unit, and 36 open fixing grooves are designed inside, so that at most 36 thermoelectric modules can be embedded in the cooling substrate. The depth of the fixing groove is 2mm, the cold end of the thermoelectric module is arranged in the fixing groove, the fixing groove of the cooling substrate is filled with heat conduction silicone grease, the thermal resistance between the contact surface of the thermoelectric module and the substrate is reduced, and the internal heat transfer capacity is improved. The cooling substrate is made of aluminum alloy material, so that the rapid heat conduction of the cold end of the thermoelectric module can be realized. The outside of the hot end of the thermoelectric module is exposed for 1mm, so that the heat loss of the hot end of the thermoelectric module is reduced. The front section of the fixing groove is processed by a through hole, and the reserved area of the front end space is 3mm and is used for bending a wire and adjusting the position of the thermoelectric module. The back of the cooling substrate adopts a cold end boss design, a wire groove is reserved between the cold end bosses, wires can be fixed in the wire groove, and the back of the cooling substrate is ensured to be smooth. The cold end boss at the back of the cooling substrate corresponds to the fixing groove provided with the thermoelectric module, so that unnecessary heat transfer can be reduced, and the cooling efficiency is improved.
The baffle plate used by the industrial integrated thermoelectric power generation device adopts a barrier type design, so that the hot end surface of the thermoelectric module is exposed to the environment, and the heat absorption area of the hot end of the thermoelectric module is improved. Because the thermoelectric module has two working modes of contact type and non-contact type, when the non-contact working mode is adopted, the baffle plate is connected with the cooling substrate, the baffle plate can prevent the thermoelectric module from falling off, more preferably, the baffle plate is connected with the cooling substrate only through bolts, and the baffle plate can be disassembled according to different working modes, namely, when the contact working mode is adopted, the baffle plate is disassembled, so that the thermoelectric module can be directly contacted with a heat source.
12 cooling water flow passages are arranged in a water cooling plate used by the industrial integrated thermoelectric power generation device, and 2 cooling water flow passages are arranged at the cold end of each thermoelectric module, so that the cooling efficiency of the cold end is greatly improved. The edge of the water cooling plate is provided with a threaded through hole for tightly connecting the water cooling plate with the cooling substrate. The plane graph of the water cooling plate is square, the water inlet/outlet direction can be changed at will in the use process, the connection of a plurality of power generation devices is facilitated, and the large-area installation is facilitated.
After the assembly is completed, the whole integrated thermoelectric power generation device is of a closed structure, only the hot end face of the thermoelectric module is exposed in the environment, and the rest parts are all installed inside, so that the adverse effect of high temperature in the environment on the power generation device is reduced, and the overall stability is improved.
Example 3
An industrial integrated thermoelectric power generation device mainly comprises a cooling substrate, a thermoelectric module, a water cooling plate and a barrier type baffle. The whole size of the industrial integrated thermoelectric power generation device is 300mm multiplied by 34mm, and 36 thermoelectric modules can be installed inside the industrial integrated thermoelectric power generation device.
The cooling substrate of the industrial integrated thermoelectric power generation device is made of an aluminum alloy material with light weight and high strength, so that the power generation device can stably operate in the industrial use process. The cooling substrate has 36 fixing grooves therein for fixing the thermoelectric module, preventing the module from being displaced during use. One end of the fixing groove adopts a through hole type design and is used for leading the connecting wires of the thermoelectric module into the back of the cooling substrate so as to prevent the adverse effect of environmental heat on the wires. The height of the fixed groove of the cooling substrate is 2mm, so that the top end of the thermoelectric module can protrude out of the cooling substrate, the cooling substrate is prevented from dispersing heat of the hot end, and the energy conversion efficiency is improved. The back of the cooling substrate is provided with a wire groove for fixing the position of the wire, so that the back of the substrate is smooth, and the water cooling plates are convenient to tightly connect. The cooling substrate and the water cooling plate are bonded by heat conduction silicone grease, so that adverse effects caused by contact thermal resistance are reduced.
In the industrial integrated thermoelectric power generation device, the water cooling plate is made of an aluminum alloy material with light weight and good heat conduction performance, so that the cold end of the thermoelectric module can be maintained in a low-temperature state for a long time in the use process. The water cooling plate adopts a flat design, and is convenient to be tightly connected with the cooling substrate. The inside of the water cooling plate is provided with 12 cooling water channels, so that the cold end of each thermoelectric module is ensured to be provided with 2 cooling water channels for heat dissipation.
The baffle of the thermoelectric power generation device adopts a barrier type design, is used for fixing the thermoelectric power generation device, preventing the thermoelectric module from falling off, exposing the hot end surface of the thermoelectric module to the environment, and improving the heat absorption area of the hot end.
The thermoelectric power generation device is integrally designed in a closed mode, all circuits are installed inside the power generation device, and damage to the internal circuits caused by an industrial thermal environment is avoided.
The performance of the single thermoelectric module is compared with that of the industrial integrated thermoelectric power generation device through field test, the single thermoelectric module does not have any protection measure, the connecting wires of the single thermoelectric module are quickly destroyed by high-temperature airflow in the production line, and in the working process, no enough temperature gradient is generated in the single thermoelectric module, so that the generated energy is extremely low. The industrial integrated thermoelectric power generation device can stably operate in an industrial production line, and a cooling system is arranged in the industrial integrated thermoelectric power generation device, so that the thermoelectric module can maintain high-efficiency power generation performance for a long time.
Claims (8)
1. An industrial integrated thermoelectric power generation device is characterized by comprising a plurality of thermoelectric modules, a cooling substrate and a water cooling plate; wherein, one side of the cooling substrate is provided with a plurality of fixing grooves for placing thermoelectric modules, the other side of the cooling substrate is provided with a plurality of wire grooves, and one side of the cooling substrate provided with the wire grooves is connected with the water cooling plate; wherein, the cold ends of the thermoelectric modules are arranged in the corresponding fixing grooves, and the hot ends of the thermoelectric modules are arranged outside the fixing grooves; the cooling substrate is made of an aluminum alloy material; the cooling substrate and the water cooling plate are jointed through heat conduction silicone grease;
the cooling substrate comprises the following components: the device comprises a fixing groove, a wire through hole, a hot end boss, a cold end boss and a wire groove; wherein 36 fixing grooves are arranged at the hot end of the cooling substrate in total, and a 6 multiplied by 6 arrangement structure is adopted; the fixing groove is used for fixing the position of the thermoelectric module; because the hot end of the cooling substrate and the cold end of the thermoelectric module are rough surfaces, heat conduction silicone grease is uniformly smeared on the contact surface of the thermoelectric module and the cooling substrate; the high temperature limit of the thermoelectric module is higher than that of the connecting wire, so that the surface temperature of the connecting wire is controlled, and the use stability of the thermoelectric module is kept; a wire through hole is arranged at one end of the fixed groove of the cooling substrate, the wire through hole can directly transfer a connecting wire from the hot end of the cooling substrate to the cold end of the cooling substrate, and the connecting wire is arranged on the wire groove and is subjected to temperature control through a water cooling plate; the cold end of the cooling substrate is provided with a wire groove for fixing the position of the connecting wire so that the connecting wire is in direct contact with the water cooling plate; both ends of the thermoelectric module are made of alumina ceramic materials; the four corners corresponding to the cooling substrate are provided with hot end bosses, and the horizontal height of the hot end bosses is 0.5mm lower than that of the thermoelectric module; the cooling substrate is provided with a cold end boss; the cold end boss of the cooling substrate corresponds to the cold end position of the thermoelectric module.
2. The integrated thermoelectric power generation device for industrial use according to claim 1, further comprising a baffle plate, wherein the hot end of the thermoelectric module is fixed by the baffle plate and the baffle plate is connected to the cooling substrate when the integrated thermoelectric power generation device for industrial use is in a non-contact operation mode.
3. The integrated thermoelectric power generation device for industrial use according to claim 1 or 2, wherein a plurality of thermoelectric modules are arranged in an array.
4. The integrated thermoelectric power generation device for industrial use according to claim 2, wherein the end face of the cooling substrate provided with the plurality of fixing grooves is provided with a hot end boss for supporting the baffle plate, and reducing pressure generated by the baffle plate on the hot end of the thermoelectric module.
5. The integrated thermoelectric power generation device for industry according to claim 1 or 2, wherein on the end face of the cooling substrate where the wire grooves are provided, the boss between the adjacent wire grooves is a cold end boss of the cooling substrate, and the position of the cold end boss corresponds to the position of the fixing groove, and a wire through hole is provided at one end of the fixing groove, extending to communicate with the wire groove.
6. The integrated thermoelectric power generation device for industry according to claim 1 or 2, wherein the water cooling plate is made of aluminum alloy material, and a cooling water flow passage is arranged in the water cooling plate for radiating cold end of the thermoelectric module.
7. The integrated thermoelectric power generation device for industrial use according to claim 5, wherein the cooling water flow path position of the water cooling plate corresponds to the cold end boss position of the cooling substrate.
8. The integrated thermoelectric power generation device for industry according to claim 2, wherein the baffle is a barrier type baffle for fixing the position of the thermoelectric module and preventing falling off.
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