CN115208239A - Heat treatment device and thermoelectric generator - Google Patents
Heat treatment device and thermoelectric generator Download PDFInfo
- Publication number
- CN115208239A CN115208239A CN202210709006.0A CN202210709006A CN115208239A CN 115208239 A CN115208239 A CN 115208239A CN 202210709006 A CN202210709006 A CN 202210709006A CN 115208239 A CN115208239 A CN 115208239A
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- Prior art keywords
- heat
- joint
- thermoelectric
- heat treatment
- treatment device
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/81—Structural details of the junction
Abstract
The invention discloses a heat treatment device and a thermoelectric generator, wherein the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in energy storage equipment, heat is supplied to the first joint, heat is discharged through the second joint, a first part of heat absorbed by the first joint is absorbed as Peltier heat, the second part of heat is transferred to the second joint through heat conduction, the discharged heat is the sum of the Peltier heat discharged by the second joint and the second part of heat conducted from the hot joint and is converted into electric energy, and therefore, the heat is converted into the electric energy through temperature difference for reutilization, and the utilization rate of the energy is improved.
Description
Technical Field
The invention relates to the technical field of energy conversion, in particular to a heat treatment device and a thermoelectric generator.
Background
The high-power inverter of energy storage power can produce a large amount of heats when using, all adopt radiating mode to discharge heat energy at present, will cause the heat waste like this, how can recycle these heats is the problem that needs to solve at present urgently.
Disclosure of Invention
In view of the above technical problems, the present invention provides a heat treatment apparatus and a thermoelectric generator.
A first aspect of the present invention provides a heat treatment apparatus, comprising at least: the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in the energy storage equipment, heat is supplied to the first joint, heat is discharged through the second joint, a first part of the heat absorbed by the first joint is absorbed as Peltier heat, a second part of the heat absorbed by the first joint is transferred to the second joint through heat conduction, the discharged heat is the sum of the Peltier heat discharged by the second joint and the second part of the heat conducted from the hot joint, and the heat is converted into electric energy.
Optionally, the heat absorbed by the first contact further includes Thomson heat and Joule heat released by the conductor.
Optionally, the heat treatment device is configured to:
a first portion of heat generated by the storage device is transferred to the first junction and a second portion is transferred to the second junction, wherein the heat includes at least peltier heat Ph, heat PT that migrates to the cold end due to heat transfer, and joule heat that is returned to the heat source.
Optionally, the first and second junctions are thermoelectric materials.
Optionally, the thermoelectric material is 20um-3mm thick.
Optionally, the thermoelectric material comprises liquid phase electrodeposition of N-type and P-type one-dimensional nanowire arrays.
Optionally, the heat treatment device further comprises a load resistor, and the load resistor is respectively connected with the first connector and the second connector.
Optionally, the thermoelectric material comprises a seebeck coefficient and an electrical conductivity.
A second aspect of the invention provides a thermoelectric generator comprising at least the heat treatment apparatus of the first aspect.
Optionally, the thermoelectric generator includes a thermoelectric single body, the thermoelectric single body is formed by connecting a p-type thermoelectric element and an n-type thermoelectric element at a hot end by metal conductor electrodes, and cold ends of the thermoelectric single body are respectively connected to cold end electrodes.
The embodiment of the invention provides a heat treatment device and a thermoelectric generator, wherein the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in energy storage equipment, heat is supplied to the first joint, heat is exhausted through the second joint, a first part of heat absorbed by the first joint is absorbed as Peltier heat, the second part of heat is transferred to the second joint through heat conduction, the exhausted heat is the sum of the Peltier heat emitted by the second joint and the second part of heat conducted from the hot joint and is converted into electric energy, and therefore, the heat is converted into the electric energy through temperature difference for reutilization, and the utilization rate of the energy is improved.
Drawings
FIG. 1 is a schematic view of a heat treatment apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electrical quantity detection module according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the invention provides a heat processing apparatus, including: the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in the energy storage device, heat is supplied to the first joint, heat is discharged through the second joint, a first part of heat absorbed by the first joint is absorbed as Peltier heat, a second part of heat absorbed by the first joint is transferred to the second joint through heat conduction, and the discharged heat is the sum of the Peltier heat discharged by the second joint and the second part of heat conducted from the hot joint and is converted into electric energy.
Optionally, the heat absorbed by the first junction further includes Thomson heat and Joule heat released by the conductor.
Optionally, the heat treatment device is configured to:
a first portion of the heat generated by the storage device is transferred to the first junction and a second portion is transferred to the second junction, wherein the heat includes at least peltier heat Ph, heat PT that migrates to the cold end due to heat transfer, and joule heat that is returned to the heat source.
Optionally, the first joint and the second joint are a thermoelectric material.
Optionally, the thermoelectric material is 20um-3mm thick.
Optionally, the thermoelectric material comprises liquid phase electrodeposition of N-type and P-type one-dimensional nanowire arrays.
Optionally, the heat treatment device further comprises a load resistor, which is connected to the first terminal and the second terminal, respectively.
Optionally, the thermoelectric material comprises a seebeck coefficient and an electrical conductivity.
Specifically, as shown in fig. 2, the thermoelectric effect is a phenomenon in which conductors or semiconductors a and B of two different materials are welded to form a closed circuit, and when there is a temperature difference between two contact points 1 and 2 of the conductors a and B, an electromotive force is generated therebetween, thereby forming a large current in the circuit, which is called the thermoelectric effect.
The thermoelectric conversion material directly converts heat energy into electric energy, is an all-solid-state energy conversion mode, does not need chemical reaction or fluid medium, has the advantages of no noise, no abrasion, no medium leakage, small volume, light weight, convenient movement, long service life and the like in the power generation process, and has the status of no substitution in special application fields of military batteries, remote space detectors, remote communication and navigation, microelectronics and the like.
The working principle of thermoelectric generation is as follows: when one ends of two thermoelectric conversion materials N and P of different types are combined and placed in a high-temperature state, and the other end is open-circuited and is provided with low temperature, the hole and electron concentrations are higher than those of the low-temperature end due to the strong thermal excitation effect of the high-temperature end, and the hole and the electron are diffused to the low-temperature end under the drive of the carrier concentration gradient, so that a potential difference is formed at the low-temperature open-circuit end; if many pairs of P-type and N-type thermoelectric conversion materials are connected to form a module, a sufficiently high voltage can be obtained to form a thermoelectric generator.
A second aspect of the invention provides a thermoelectric generator comprising at least the above-mentioned heat treatment device.
Optionally, the thermoelectric generator includes a thermoelectric single body, the thermoelectric single body is formed by connecting a p-type thermoelectric element and an n-type thermoelectric element at a hot end by metal conductor electrodes, and cold ends of the thermoelectric single body are respectively connected with cold end electrodes.
When the generator is operating, heat should be continuously supplied to the hot junction and heat should be continuously removed from the cold junction in order to maintain a certain temperature difference between the hot junction and the cold junction. Part of the heat supplied by the hot junction is absorbed as peltier heat, and the other part is transferred to the cold junction by thermal conduction. The heat rejected should be the sum of the peltier heat given off by the cold junction and the heat conducted from the hot junction. For the thermal balance of the joint, thomson heat and joule heat released by the conductor should also be added. Half of the joule heat I2Ri generated in the system is transferred to the hot end, the other half is discharged from the cold end, the heat consumed by the heat source is Peltier heat Ph, the heat PT transferred to the cold end due to heat transfer and the joule heat returning to the heat source, namely the thermoelectric conversion efficiency of the thermoelectric monomer is the ratio of the useful power to the heat consumed by the heat source. In order to obtain the thermoelectric material with high figure of merit, only the Seebeck coefficient and the electric conductivity of the thermoelectric material are improved, and the heat conductivity of the thermoelectric material is reduced. However, the seebeck coefficient, the electrical conductivity, and the thermal conductivity are all dependent on the carrier concentration and the mobility to various degrees, and are correlated with each other.
The embodiment of the invention also provides a thermoelectric generator which at least comprises the heat treatment device.
Optionally, the thermoelectric generator comprises a thermoelectric single body, the thermoelectric single body is formed by connecting a p-type thermoelectric element and an n-type thermoelectric element by metal conductor electrodes at a hot end, and cold end electrodes are respectively connected at a cold end.
The thermoelectric generator is a power generation device which directly converts heat energy into electric energy by utilizing the Seebeck effect. A p-type thermoelectric element and an n-type thermoelectric element are connected by metal conductor electrodes at the hot end, and cold end electrodes are respectively connected at the cold ends to form a thermoelectric single body or a single couple. An external load with a resistance RL is connected to the open end of the thermoelectric single body, if heat flow is input to the hot side of the thermoelectric single body and a temperature difference is established between the hot end and the cold end of the thermoelectric single body, current flows through the circuit, and electric power I2RL is obtained from the load, so that a generator for directly converting heat energy into electric energy is obtained.
The embodiment of the invention provides a heat treatment device and a thermoelectric generator, wherein the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in energy storage equipment, heat is supplied to the first joint, heat is exhausted through the second joint, a first part of heat absorbed by the first joint is absorbed as Peltier heat, the second part of heat is transferred to the second joint through heat conduction, the exhausted heat is the sum of the Peltier heat emitted by the second joint and the second part of heat conducted from the hot joint and is converted into electric energy, and therefore, the heat is converted into the electric energy through temperature difference for recycling, and the utilization rate of the energy is improved.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A heat treatment device, characterized by comprising at least: the heat treatment device comprises a first joint and a second joint, the temperature of the first joint is higher than that of the second joint, the heat treatment device is positioned in the energy storage equipment, heat is supplied to the first joint, heat is discharged through the second joint, a first part of the heat absorbed by the first joint is absorbed as Peltier heat, a second part of the heat absorbed by the first joint is transferred to the second joint through heat conduction, the discharged heat is the sum of the Peltier heat discharged by the second joint and the second part of the heat conducted from the hot joint, and the heat is converted into electric energy.
2. A heat management device according to claim 1, wherein the heat absorbed by the first connector further comprises thomson heat and joule heat released by the conductor.
3. A thermal processing device according to claim 2, wherein said thermal processing device is configured to:
a first portion of heat generated by the storage device is transferred to the first junction and a second portion is transferred to the second junction, wherein the heat includes at least peltier heat Ph, heat that migrates to the cold end due to heat transfer PT, and joule heat that is returned to the heat source.
4. The heat treatment apparatus of claim 1, wherein the first and second junctions are thermoelectric materials.
5. A heat treatment device according to claim 4, wherein the thermoelectric material is 20um-3mm thick.
6. The thermal management device of claim 5, wherein said thermoelectric material comprises liquid phase electrodeposited N-type and P-type one-dimensional nanowire arrays.
7. The heat treatment device of claim 5, further comprising a load resistor connected to the first terminal and the second terminal, respectively.
8. The thermal processing device of claim 4, wherein said thermoelectric material comprises a Seebeck coefficient and an electrical conductivity.
9. A thermoelectric generator comprising a heat treatment apparatus as claimed in any one of claims 1 to 8.
10. Thermoelectric generator as claimed in claim 9 comprising thermoelectric cells connecting a p-type thermoelectric element and an n-type thermoelectric element with metal conductor electrodes at the hot side and cold side electrodes at the cold side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210709006.0A CN115208239A (en) | 2022-06-22 | 2022-06-22 | Heat treatment device and thermoelectric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210709006.0A CN115208239A (en) | 2022-06-22 | 2022-06-22 | Heat treatment device and thermoelectric generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115208239A true CN115208239A (en) | 2022-10-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210709006.0A Pending CN115208239A (en) | 2022-06-22 | 2022-06-22 | Heat treatment device and thermoelectric generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115208239A (en) |
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2022
- 2022-06-22 CN CN202210709006.0A patent/CN115208239A/en active Pending
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