CN112737413A - Thermoelectric conversion control method for waste heat of automobile engine exhaust - Google Patents
Thermoelectric conversion control method for waste heat of automobile engine exhaust Download PDFInfo
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- CN112737413A CN112737413A CN202011584590.9A CN202011584590A CN112737413A CN 112737413 A CN112737413 A CN 112737413A CN 202011584590 A CN202011584590 A CN 202011584590A CN 112737413 A CN112737413 A CN 112737413A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002918 waste heat Substances 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 38
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 5
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a thermoelectric conversion control method for waste heat of automobile engine exhaust, which relates to the technical field of thermoelectric conversion, and comprises a generator module, a temperature detection module, a temperature difference power generation module, an output energy storage module and a control processing module, wherein the engine module sends state information of an engine to the control processing module, the temperature detection module transmits the temperature information of the engine exhaust to the control processing module, the processing control module controls the start of the temperature difference power generation module and the discharge and storage of the output energy storage module, and the processing control module sends conversion control information to the thermoelectric conversion module, other modules are controlled by the control processing module, the temperature in the engine exhaust is monitored in real time by the temperature monitoring module, the exhaust is pressurized or depressurized by an air pressure intensifier, the exhaust reaches the optimal conversion state, and the heat dissipation speed in the device can be slowed down by a heat insulation layer and a heat insulation gasket, the conversion efficiency is increased.
Description
Technical Field
The invention belongs to the technical field of thermoelectric conversion, and particularly relates to a thermoelectric conversion control method for waste heat of automobile engine exhaust.
Background
At present, about 8 hundred million vehicles are available all over the world, wherein most of the vehicles are ordinary fuel internal combustion engine vehicles, heat generated by fuel combustion in an engine is not completely changed into kinetic energy, the power conversion efficiency of the vehicles is only about 40%, about 60% of energy in the fuel is not effectively utilized, wherein the heat taken away by engine exhaust accounts for about 30% -45% of the fuel combustion heat, the heat used for cooling accounts for about 30%, and most of the energy is dissipated to the air in the form of waste heat, so that huge energy waste and serious environmental pollution are caused.
Although partial waste heat in the automobile exhaust waste heat thermoelectric generation device can retrieve tail gas, conversion efficiency is not high, only tens of watts to hundreds of watts are not equal, the cost of input is not directly proportional with the recovery, at the in-process that the waste heat generated electricity, thermoelectric conversion mainly faces these two problems, one: the thermoelectric power generation material determines whether the heat energy has secondary consumption in the transfer process and whether the conductivity is good in the process of specifically converting the heat energy into the electric energy; II, secondly: the connection method of the thermoelectric power generation material selects different connection methods, and the electric energy generated by a circuit formed by electrifying and the electric energy consumed in the conduction process have an extremely important relationship with the connection method, which are the problems to be considered in the thermoelectric power generation.
Disclosure of Invention
The invention aims to provide a thermoelectric conversion control method for waste heat of automobile engine exhaust, which comprises a generator module, a temperature detection module, a temperature difference power generation module, an output energy storage module and a control processing module, wherein the generator module is used for generating power according to the waste heat of the automobile engine;
the engine module sends the state information of the engine to the control processing module, the temperature detection module transmits the temperature information of the engine tail gas to the control processing module, the processing control module controls the temperature difference power generation module to start and output the energy storage module to discharge and store, the processing control module sends conversion control information to the thermoelectric conversion module, the control processing module sends output and storage information to the output energy storage module, and the output energy storage outputs or stores the converted energy or converts the converted energy into the next stage.
Preferably, the engine module includes an engine block that operates to generate exhaust gas, and a fixed connection that fixedly connects the thermoelectric conversion device to the engine.
Preferably, the temperature detection module further comprises a temperature detector and an air pressure regulator, wherein the temperature detector is a thermocouple temperature sensor, and the temperature detector is arranged at an exhaust emission position of the engine body.
Preferably, the output energy storage module comprises a control valve, a flexible output pipe and a heat insulation gasket, the heat insulation gasket is arranged at the joint of the flexible output pipe, and the control valve is arranged on the outer surface of the flexible output pipe.
Preferably, the thermoelectric conversion module includes a thermoelectric converter, a thermal insulation layer and a heat collecting tube, the heat collecting tube is disposed at the exhaust port, the thermal insulation layer is disposed on the outer surface of the heat collecting tube, the thermoelectric converter is disposed above the heat collecting tube, and the air pressure regulator is disposed on the surfaces of two sides of the heat collecting tube.
Preferably, the control processing module includes a processor, an input device and a memory, and the processor is electrically connected to the input device and the memory, respectively.
A control method of a thermoelectric conversion control method of automobile engine exhaust waste heat comprises the following steps:
the method comprises the following steps: the tail gas treatment comprises heat detection, heat treatment and heat conversion, the temperature condition of the tail gas of the automobile can be known through the detection of a temperature detector, the tail gas is collected by a heat collecting pipe, the tail gas can be pressurized or depressurized through a pressure regulator, the tail gas state achieves the best effect, a heat insulating layer prevents heat from dissipating, and the waste heat is converted into electric power through a thermoelectric converter;
step two: the temperature detection monitors the tail gas state of the engine in real time, and when the temperature reaches the optimal temperature, the pressure is increased through the air pressure regulator, so that the conversion environment reaches the optimal conversion state; when the temperature reaches the optimal state, the conversion information is transmitted to the control processing module for thermoelectric conversion;
step three: when in thermoelectric conversion, the thermoelectric conversion is carried out under the coordination of the heat collecting pipe and the internal conversion device through the thermoelectric converter on the bottom plate, meanwhile, the heat in the heat collecting pipe is discharged through the flexible output pipe and the heat collecting pipe under the regulation and control of the control valve, and the internal gas pressure is balanced by utilizing a gas pressure regulator;
step four: the processing control module processes the information in real time.
Preferably, the second step further comprises the steps of:
step five: the pressure is regulated according to different temperatures required to be detected in the tail gas treatment process, and the conversion environment reaches the optimal conversion environment by regulating different temperatures and pressures, so that the optimal conversion efficiency is achieved.
The invention has the following beneficial effects:
according to the invention, other modules are controlled by the control processing module, the temperature in the tail gas of the engine is monitored in real time by the temperature monitoring module, the tail gas is pressurized or depressurized by the air pressure intensifier, so that the tail gas reaches an optimal conversion state, and meanwhile, the heat dissipation speed in the device can be slowed down by the heat insulation layer and the heat insulation gasket, so that the conversion efficiency is increased.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a thermoelectric conversion control method for waste heat of automobile engine exhaust according to the present invention;
fig. 2 is a schematic structural diagram of a thermoelectric conversion control method for waste heat of automobile engine exhaust according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
101. fixing the connecting piece; 102. a thermoelectric converter; 103. a heat collecting pipe; 104. a thermal insulation layer; 105. an air pressure regulator; 106. a control valve; 107. a flexible output pipe; 108. a thermally insulating spacer; 109. an engine body; 110. a temperature detector.
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.
In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate orientations or positional relationships, are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1-2, the present invention relates to a thermoelectric conversion control method for waste heat of automobile engine exhaust, including a generator module, a temperature detection module, a thermoelectric generation module, an output energy storage module and a control processing module, and is characterized in that:
the generator module, the temperature detection module, thermoelectric generation module and output energy storage module all are connected with control processing module, the engine module sends the state information of engine to control processing module, temperature detection module gives control processing module with engine exhaust temperature information transmission, processing control module control thermoelectric generation module starts and output energy storage module's discharge and storage, processing control module sends conversion control information to thermoelectric conversion module, control processing module sends output and storage information to output energy storage module, output energy storage will change energy output or storage or be converted to next-level.
The engine module includes an engine body 109 and a fixed connector 101, the engine body 109 operates to generate exhaust, and the fixed connector 101 fixedly connects the thermoelectric conversion device to the engine.
The temperature detection module further comprises a temperature detector 110 and an air pressure regulator 105, wherein the temperature detector 110 is a thermocouple temperature sensor, and the temperature detector 110 is arranged at an exhaust emission position of the engine body 109.
The output energy storage module comprises a control valve 106, a flexible output pipe 107 and a heat insulation gasket 108, the heat insulation gasket 108 is arranged at the joint of the flexible output pipe 107, and the control valve 106 is arranged on the outer surface of the flexible output pipe 107.
The thermoelectric conversion module comprises a thermoelectric converter 102, a heat insulation layer 104 and a heat collection pipe 103, wherein the heat collection pipe 103 is arranged at the exhaust gas discharge port, the heat insulation layer 104 is arranged on the outer surface of the heat collection pipe 103, the thermoelectric converter 102 is arranged above the heat collection pipe 103, and the air pressure regulator 105 is arranged on the surfaces of two sides of the heat collection pipe 103.
The control processing module comprises a processor, input equipment and a memory, and the processor is electrically connected with the input equipment and the memory respectively.
Example two
A control method of a thermoelectric conversion control method of automobile engine exhaust waste heat comprises the following steps:
the method comprises the following steps: the tail gas treatment comprises heat detection, heat treatment and heat conversion, the temperature condition of the tail gas of the automobile can be known through the detection of a temperature detector 110, the tail gas is collected by a heat collecting pipe 103, the tail gas can be pressurized or depressurized through a pressure regulator 105, the tail gas state achieves the best effect, a heat insulating layer 104 prevents heat dissipation, and the waste heat is converted into electric power through a thermoelectric converter 102;
step two: the temperature detection monitors the tail gas state of the engine in real time, and when the temperature reaches the optimal temperature, the pressure is increased through the air pressure regulator 105, so that the conversion environment reaches the optimal conversion state; when the temperature reaches the optimal state, the conversion information is transmitted to the control processing module for thermoelectric conversion;
step three: during thermoelectric conversion, the thermoelectric converter 102 on the bottom plate performs thermoelectric conversion under the coordination of the heat collecting pipe 103 and the internal conversion device, meanwhile, heat inside the heat collecting pipe 103 is exhausted through the flexible output pipe 107 and the heat collecting pipe 103 under the regulation and control of the control valve 106, and the internal gas pressure is balanced by the gas pressure regulator 105;
step four: the processing control module processes the information in real time.
Wherein, the second step also comprises the following steps:
step five: the pressure is regulated according to different temperatures required to be detected in the tail gas treatment process, and the conversion environment reaches the optimal conversion environment by regulating different temperatures and pressures, so that the optimal conversion efficiency is achieved.
Example three:
referring to fig. 1-2, the present invention relates to a thermoelectric conversion control method for waste heat of exhaust gas of an automobile engine, wherein the type of the temperature sensor includes BRW 600-400A.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The thermoelectric conversion control method for the waste heat of the tail gas of the automobile engine comprises a generator module, a temperature detection module, a temperature difference power generation module, an output energy storage module and a control processing module, and is characterized in that:
the engine module sends the state information of the engine to the control processing module, the temperature detection module transmits the temperature information of the engine tail gas to the control processing module, the processing control module controls the temperature difference power generation module to start and output the energy storage module to discharge and store, the processing control module sends conversion control information to the thermoelectric conversion module, the control processing module sends output and storage information to the output energy storage module, and the output energy storage outputs or stores the converted energy or converts the converted energy into the next stage.
2. The method for controlling the thermoelectric conversion of the waste heat of the automobile engine exhaust according to claim 1, wherein the engine module comprises an engine body (109) and a fixed connector (101), the engine body (109) operates to generate the exhaust, and the fixed connector (101) fixedly connects the thermoelectric conversion device with the engine.
3. The method for controlling the thermoelectric conversion of the waste heat of the automobile engine exhaust according to claim 1, wherein the temperature detection module further comprises a temperature detector (110) and an air pressure regulator (105), the temperature detector (110) is a thermocouple temperature sensor, and the temperature detector (110) is disposed at an exhaust emission position of an engine body (109).
4. The method for controlling the thermoelectric conversion of the waste heat of the automobile engine exhaust according to claim 1, wherein the output energy storage module comprises a control valve (106), a flexible output pipe (107) and a heat insulation gasket (108), the heat insulation gasket (108) is arranged at the joint of the flexible output pipe (107), and the control valve (106) is arranged on the outer surface of the flexible output pipe (107).
5. The method for controlling the thermoelectric conversion of the waste heat of the automobile engine exhaust according to claim 1, wherein the thermoelectric conversion module comprises a thermoelectric converter (102), a heat insulation layer (104) and a heat collection tube (103), the heat collection tube (103) is disposed at the exhaust outlet, the heat insulation layer (104) is disposed on the outer surface of the heat collection tube (103), the thermoelectric converter (102) is disposed above the heat collection tube (103), and the air pressure regulator (105) is disposed on the two side surfaces of the heat collection tube (103).
6. The method for controlling thermoelectric conversion of waste heat of automobile engine exhaust according to claim 1, wherein the control processing module comprises a processor, an input device and a memory, and the processor is electrically connected to the input device and the memory, respectively.
7. The control method of the thermoelectric conversion control method of the waste heat of the automobile engine exhaust according to any one of claims 1 to 6, characterized by comprising the steps of:
the method comprises the following steps: the tail gas treatment comprises heat detection, heat treatment and heat conversion, the temperature condition of the tail gas of the automobile can be known through the detection of a temperature detector (110), the tail gas is collected by a heat collecting pipe (103), the tail gas can be pressurized or depressurized through a gas pressure regulator (105), so that the tail gas state achieves the best effect, a heat insulating layer (104) prevents heat loss, and the waste heat is converted into electric power through a thermoelectric converter (102);
step two: the temperature detection monitors the tail gas state of the engine in real time, and when the temperature reaches the optimal temperature, the pressure is increased through an air pressure regulator (105), so that the conversion environment reaches the optimal conversion state; when the temperature reaches the optimal state, the conversion information is transmitted to the control processing module for thermoelectric conversion;
step three: when in thermoelectric conversion, the thermoelectric conversion is carried out through the thermoelectric converter (102) on the bottom plate under the coordination of the heat collecting pipe (103) and the internal conversion device, meanwhile, the heat in the heat collecting pipe (103) is exhausted through the flexible output pipe (107) and the heat collecting pipe (103) under the regulation and control of the control valve (106), and the internal gas pressure is balanced by the gas pressure regulator (105);
step four: the processing control module processes the information in real time.
8. The control method of the thermoelectric conversion control method of the waste heat of the automobile engine exhaust according to the claims 1 to 6, characterized in that the first step further comprises the following steps:
step five: the pressure is regulated according to different temperatures required to be detected in the tail gas treatment process, and the conversion environment reaches the optimal conversion environment by regulating different temperatures and pressures, so that the optimal conversion efficiency is achieved.
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| CN202011584590.9A CN112737413A (en) | 2020-12-28 | 2020-12-28 | Thermoelectric conversion control method for waste heat of automobile engine exhaust |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201328093Y (en) * | 2008-10-31 | 2009-10-14 | 上海汽车集团股份有限公司 | Power generation device using waste heat of automobile exhaust |
| CN101701873A (en) * | 2009-11-13 | 2010-05-05 | 武汉理工大学 | Automobile engine tail gas waste-heat and electricity converting stand test device and method for controlling same |
| CN203811381U (en) * | 2014-02-26 | 2014-09-03 | 浙江海洋学院 | An automobile engine tail gas waste heat recovery analogue system |
| CN105484838A (en) * | 2016-01-18 | 2016-04-13 | 奇瑞汽车股份有限公司 | Automobile cold start waste gas treatment device and method |
| CN205605282U (en) * | 2016-05-14 | 2016-09-28 | 温州铭泽机电科技有限公司 | Internal -combustion engine tail gas waste heat difference in temperature thermoelectric conversion technique device |
| CN110374730A (en) * | 2019-08-17 | 2019-10-25 | 华北理工大学 | A kind of vehicle exhaust cyclic processing device |
-
2020
- 2020-12-28 CN CN202011584590.9A patent/CN112737413A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201328093Y (en) * | 2008-10-31 | 2009-10-14 | 上海汽车集团股份有限公司 | Power generation device using waste heat of automobile exhaust |
| CN101701873A (en) * | 2009-11-13 | 2010-05-05 | 武汉理工大学 | Automobile engine tail gas waste-heat and electricity converting stand test device and method for controlling same |
| CN203811381U (en) * | 2014-02-26 | 2014-09-03 | 浙江海洋学院 | An automobile engine tail gas waste heat recovery analogue system |
| CN105484838A (en) * | 2016-01-18 | 2016-04-13 | 奇瑞汽车股份有限公司 | Automobile cold start waste gas treatment device and method |
| CN205605282U (en) * | 2016-05-14 | 2016-09-28 | 温州铭泽机电科技有限公司 | Internal -combustion engine tail gas waste heat difference in temperature thermoelectric conversion technique device |
| CN110374730A (en) * | 2019-08-17 | 2019-10-25 | 华北理工大学 | A kind of vehicle exhaust cyclic processing device |
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