CN108028305A - Thermo-electric conversion module, internal combustion engine, New-type electric machine and electricity-generating method - Google Patents

Abstract

Heat to electricity conversion pattern, internal combustion engine, New-type electric machine and electricity-generating method are disclosed, by making the flow deflector of Conventional thermoelectric modular converter into thermal stress resistance flow deflector by rigid flow deflector（202）, the built-in thermal stress of electrothermal module can be effectively discharged, reaches the extension service life and expands the effect of the application field of thermo-electric conversion module.Further the thermo-electric conversion module is applied on internal combustion engine and motor, the temperature difference electricity generation device made of the thermo-electric conversion module is added among the fever housing and cooling system of existing internal combustion engine and motor, using internal combustion engine and harmful heat energy power-generating of motor, reach the effect of energy-saving and emission-reduction.And then by the more waste heats in application road of the electrothermal module and the recycling field of harmful thermal energy, using waste heat and harmful heat energy power-generating, realization turns waste into wealth and changes harmful to treasure, and reaches the effect of energy-saving and emission-reduction.

Description

Thermo-electric conversion module, internal combustion engine, New-type electric machine and electricity-generating method

Thermoelectric conversion module, novel internal combustion engine, novel motor and power generation method technical field

[0001] The invention relates to the technical field of thermoelectric generation, internal combustion engines and motors.

Background

[0002] The semiconductor refrigeration and thermoelectric generation technology developed according to the Peltier and Seebeck effects has the core of a thermoelectric conversion module, also called thermoelectric material, thermoelectric semiconductor and the like, can realize bidirectional conversion between electric energy and heat energy, and the energy is converted into an all-solid-state energy conversion mode without chemical reaction or fluid medium, moving parts, noise, abrasion, medium leakage, harmful substance emission, small volume, light weight, convenient movement, stable operation, high reliability, long service life and the like. However, the heat-conducting contact surfaces (including hot surfaces and cold surfaces) of the conventional thermoelectric conversion modules are mainly sintered planar alumina ceramics, and the planar processing requirements and the cost are high. The internal flow deflectors are all straight plate-shaped metal (mainly made of copper) flow deflectors, so that the thermal stress generated in the temperature shock can not be effectively released, the size of the module and the number of internal semiconductors are limited for considering the service life of the thermoelectric conversion module, and finally the power of the thermoelectric conversion module is limited. And the diffusion between materials generated by the connection (such as welding) of the flow deflector and the semiconductor affects the performance of the semiconductor material, and the diffusion is inhibited by adding a diffusion-proof layer, so that the thermal resistance of the module is increased, and the efficiency is reduced. Chinese patent document No. CN 2779623Y discloses a refrigeration chip structure based on curved surface, which improves the thermoelectric conversion module in that the heat-conducting contact surface is curved surface and the traditional alumina ceramic substrate is replaced by a metal substrate with strong plasticity, thus expanding the application range of the thermoelectric module, but the patent document does not provide any improvement on the flow deflector, still has the problems of limited module life, size and power caused by the thermal stress of the straight plate-shaped metal flow deflector, and the problems of diffusion between materials, thermal resistance and efficiency, and the increased insulating layer attached to the whole surface of the substrate also increases the thermal resistance of the module.

[0003] The existing internal combustion engine has low efficiency, fuel is combusted to generate high-temperature and high-pressure gas, the energy of the high-temperature and high-pressure gas can be roughly divided into two parts, namely high-pressure gas and heat energy, the internal combustion engine only utilizes part of the energy of the high-pressure gas to drive a piston to do work outwards, namely mechanical energy is output, and the heat energy is not utilized; the heat energy which is not utilized is divided into two parts of waste heat and harmful heat energy, wherein the waste heat is high-temperature and high-pressure tail gas discharged by an engine, the harmful heat energy refers to heat energy for raising the temperature of a cylinder body of the internal combustion engine after fuel is combusted, the normal operation of the internal combustion engine can be hindered by the overhigh temperature of the cylinder body of the internal combustion engine, so that the cylinder body of the internal combustion engine needs to be cooled by a cooling system, further, energy or resources need to be consumed to drive the cooling system to operate, most of the energy consumed by the cooling system directly or indirectly comes from the mechanical energy output of the internal combustion engine, the effective mechanical energy output of the internal combustion engine is reduced. In order to meet the output of effective mechanical energy, the mechanical energy of the effective output of the internal combustion engine can be increased only by increasing the displacement of the internal combustion engine, and the internal combustion engine with large displacement inevitably brings higher emission pollution.

[0004] The piston type internal combustion linear generator disclosed in the chinese patent document with application publication No. CN 1625026 a is the same as the conventional internal combustion engine, only the high-temperature and high-pressure gas generated by the combustion of the fuel in the combustion chamber of the internal combustion engine is used to do work on the piston, and there is no mention of the temperature rise and the countermeasure brought by the high-pressure gas generated by the combustion of the fuel in the same inch, and naturally, the heat energy of the high-temperature cylinder is not used.

[0005] Chinese patent document publication No. CN 102425499 a discloses a free piston internal combustion linear generator with controllable dead points, which is the same as a conventional internal combustion engine, and only uses high-pressure gas generated after fuel combustion to push a piston to do work and further generate electricity, and does not mention the temperature rise and the measure of coping caused by the same inch of high-pressure gas generated after fuel combustion, and naturally does not use the heat energy of a high-temperature cylinder.

[0006] The existing motor comprises a motor for converting electric energy into mechanical energy and a generator for converting the mechanical energy into electric energy, wherein when the energy is converted into electricity, a part of the electricity is lost and converted into heat which is harmful heat energy, the heat energy is required to be cooled to ensure the normal operation of the motor, and the motor with low power can achieve the cooling purpose through natural cooling of a shell; the high-power motor has large heat productivity, and must be radiated by a forced cooling system, and the operation of the forced cooling system consumes additional energy, and increases energy consumption and greenhouse gas emission (such as high-power driving motors of electric traction locomotives and electric automobiles of railways).

[0007] The existing various energy conversion devices are limited by technologies, the conversion efficiency is not up to 100%, wherein most of wasted energy is released in the form of heat energy, some heat energy is discharged in the form of waste heat energy, and the other part of heat energy is accumulated in the devices to cause the temperature in the devices to rise, so that the normal operation of the devices is influenced, and therefore, the devices are all provided with cooling systems for heat dissipation, so that the devices operate in a proper temperature environment. The heat energy required to be dissipated in the equipment is called harmful heat energy, the harmful heat energy is not utilized or the utilization efficiency is low, more energy and resources are consumed to drive the operation of the cooling system, and the energy and the resources are further wasted in the same inch of reducing the energy conversion efficiency. Internal combustion engines and motors belong to typical energy conversion equipment, are generally applied and are huge in quantity, and therefore energy waste is considerable.

Technical problem [0008] the thermal stress of the current-share vanes of the thermoelectric conversion module causes the limitation of the module size and power, and reduces the conversion efficiency.

[0009] Various energy conversion devices including internal combustion engines and electric machines generate harmful heat energy which is not utilized, and additional energy and resources are consumed to drive a cooling system to operate, so that energy consumption and greenhouse gas emission are increased.

Solution to the problem

Technical solution

[0010] The general idea of the invention is as follows:

[0011] the thermoelectric conversion module is applied to the field of thermoelectric generation, the power generation efficiency is related to the temperature difference between two sides of the thermoelectric conversion module, and if the thermoelectric conversion module is required to keep enough temperature difference on the thickness of a few millimeters, the thermoelectric conversion module cannot help to stabilize a heat source and a high-efficiency heat dissipation device;

[0012] the energy conversion equipment provided with the cooling system meets the conditions of stable heat source and efficient heat dissipation with the same time; or the passive high-efficiency cooling system can be adopted near the waste heat energy to meet the conditions;

[0013] the thermoelectric conversion module with the plane heat-conducting contact surface is not suitable for being installed and used with the energy conversion equipment, and the heat-conducting contact surface of the conventional thermoelectric conversion module is changed from a plane to a curved surface so as to be suitable for the surface of a heat source of the energy conversion equipment; the thermal stress resistant flow deflector is used for replacing the existing rigid flow deflector in the thermoelectric conversion module, so that the thermal stress of the thermoelectric conversion module in the temperature shock can be released;

[0014] the thermoelectric conversion module with the heat-conducting contact surface as the curved surface is matched with a stable heat source and a cooling system of the energy conversion equipment, so that the power generation by utilizing waste heat is realized, the power generation by utilizing harmful heat energy is realized, and the heat dissipation power of the cooling system is reduced at the same time.

[0015] The invention aims to overcome the defects of small application range of the existing thermoelectric conversion module, energy waste and low efficiency in the existing internal combustion engine technology and motor technology, and provides the thermoelectric conversion module, the novel internal combustion engine, the novel motor and the power generation method, which can expand the application range of the thermoelectric conversion module, realize the change of harm into treasure, improve the energy conversion efficiency of the internal combustion engine and the motor, and achieve the effects of energy conservation and emission reduction.

[0016] In order to achieve the purpose, the invention adopts the following technical scheme:

[0017] in a first aspect of the present invention, there is provided a thermoelectric conversion module, wherein the thermoelectric conversion module comprises one or more features of a curved thermal contact surface and an anti-thermal stress deflector, wherein:

[0018] the curved heat-conducting contact surface refers to that the heat-conducting contact surfaces (including a hot surface and a cold surface) of the thermoelectric conversion module are curved surfaces, and comprise simple curved surfaces and complex curved surfaces, wherein the simple curved surfaces comprise various arc-shaped surfaces, such as a cylindrical surface, a part of cylindrical surface, a circular table surface, a part of circular table surface, a spherical surface, a part of spherical surface and the like; the complex curved surface comprises a curved surface formed by combining more than 1 simple curved surface or plane, and other complex curved surfaces such as saddle-shaped curved surfaces. As shown in fig. 1, a basic principle diagram of a curved thermoelectric conversion module is the same as that of a conventional thermoelectric conversion module, and includes a current guiding plate 101, an N-type semiconductor material 102, and a P-type semiconductor material 103, which is different from the conventional thermoelectric conversion module in that a heat-conducting contact surface 104 of the current guiding plate 101 is a curved surface. Because the heating elements in the existing various energy conversion devices are mostly cylindrical, the cylindrical surface or part of the cylindrical surface is one of the curved surface shapes which are applied to the curved surface.

[0019] The thermal stress resistant current guide plate refers to that the middle section of each current guide plate in the thermoelectric conversion module is made of a flexible material or a rigid material capable of releasing a thermal stress structure, and the current guide plate is made of a metal or nonmetal material which has good heat conduction and electricity conduction and comprises copper and single-layer or multi-layer graphene. One guide vane can be divided into three parts: the two ends of the current conducting sheet are respectively connected with 2 adjacent semiconductor materials, and the current conducting sheet has heat conducting and electric conducting functions, is not only responsible for conducting heat between the connected semiconductor and the outside, but also responsible for conducting electricity between two adjacent semiconductors, and is called as a heat conducting and electric conducting part; the middle section of the flow deflector is made of flexible material or rigid material capable of releasing thermal stress structure, the 2 heat conduction parts are connected together and are responsible for conducting electricity among the 2 heat conduction parts, the part is called as a conductive part, and the conductive part can be slightly deformed in temperature change so as to release thermal stress of self expansion with heat and contraction with cold; for example, a bend may be added to the middle section of a conventional copper straight plate flow deflector, as shown in fig. 2, wherein the flow deflector 201+202+203 is an integral copper plate, and a bend 202 is added to the middle, and the bend 202 is a structure capable of releasing thermal stress, and can release thermal stress itself in a temperature change time. The thermal stress resistant flow deflector can effectively release the thermal stress generated by the flow deflector in temperature change inches, basically eliminate the damage of the thermal stress to the whole thermoelectric conversion module, greatly prolong the service life of the thermoelectric conversion module, and greatly increase the number of semiconductors in the same thermoelectric conversion module in the same inch, thereby improving the output voltage and power of a single thermoelectric conversion module.

[0020] C, the thermoelectric conversion module which is independent of the shape of the heat-conducting contact surface and the heat-conducting contact surface of which is a curved surface or a plane can adopt the anti-thermal stress current-conducting sheet.

[0021] Furthermore, in the thermoelectric conversion module, an anti-diffusion layer is added between the flow deflector and the semiconductor material, and the anti-diffusion layer is added or surface treatment (including welding) is carried out on a contact surface of the flow deflector and the semiconductor material, namely anti-diffusion treatment, so that the flow deflector and the semiconductor material are prevented from material diffusion under the condition of long-term high temperature, and the performance of the thermoelectric conversion module is reduced or even loses efficacy; the current guiding plate and the semiconductor material which are connected into a whole should be good in electric conduction. [0022] In one embodiment, as shown in fig. 2, the anti-thermal stress conductive patch is composed of three parts, i.e., a conductive part 201, a conductive part 202 and a conductive part 203, wherein the conductive part 201 is responsible for conducting heat between the N-type semiconductor 204 and the outside and requires good heat conduction, and the conductive part 201 is responsible for conducting electricity between the N-type semiconductor 204 and the P-type semiconductor 205 and requires good electricity conduction; the heat conduction and electric conduction part 203 is responsible for heat conduction between the P-type semiconductor and the outside and requires good heat conduction, and simultaneously, the current conduction between the P-type semiconductor 205 and the N-type semiconductor 204 requires good electric conduction; the conductive portion 202 is made of a flexible conductive material and is responsible for conducting electricity between the conductive portions 201 and 203, and the conductive portion 202 is made of a flexible material, so that thermal stress generated by the whole flow deflector due to temperature changes can be released under the condition that the conductive portions 201 and 203 are fixedly mounted with external contact surfaces respectively. The heat conducting and conducting part 201, the conducting part 202 and the heat conducting and conducting part 203 are tightly connected or welded into a whole, and the three can be made of the same or different materials and are required to be good in electric conduction; a diffusion barrier 206 is shown sandwiched between the thermally conductive portion of the flow deflector and the semiconductor.

[0023] Further, the thermoelectric conversion module comprises the following forms:

[0024] one is as follows: the same inch adopts curved heat-conducting contact surfaces and thermal stress-resistant heat-conducting plates, as shown in fig. 2 and 3, which are the basic components of the thermoelectric conversion module, wherein the heat-conducting contact surfaces 207, 305 and 307 are curved surfaces; the baffle 313 is a flexible baffle, and the baffle comprising the conductive portions 201, 203 and the conductive portion 202 is flexible

[0025] The second step is as follows: by adopting the thermal stress resistant flow deflector and the plane contact surface in the prior art, as shown in fig. 4, the contact surface between the heat conducting ceramic chips 404 and 405 and the outside is the plane contact surface, and the flow deflector 403 is the flexible flow deflector; further, on the premise of ensuring the sealing and insulation of the entire thermoelectric conversion module, the heat conducting ceramic sheets 404 and 405 may be removed, and the flexible insulating heat conducting material is installed between the flow deflector 403 and the external heat conducting contact surface. The heat conduction effect is better, and the thermoelectric conversion efficiency is improved;

[0026] and thirdly: by using a curved contact surface and a rigid baffle in the prior art, as shown in fig. 1, the heat-conducting contact surface 104 is a curved surface, and the baffle 101 is a rigid baffle.

[0027] Further, the thermoelectric conversion module can be used for refrigeration or thermoelectric power generation.

[0028] Furthermore, the thermoelectric conversion module does not adopt the traditional ceramic chip packaging under the premise of ensuring sealing and insulation except special environment (such as the whole module works in liquid), so that the thermal resistance is increased and the cost is increased, especially the cost of the ceramic chip with a curved surface is greatly increased, and the heat-conducting contact surface is not easy to be completely matched, so that the thermal resistance is increased, and the thermoelectric conversion efficiency is reduced. [0029] Furthermore, the thermoelectric conversion module ensures that the heat conduction contact surface of each flow deflector of the cold surface and the hot surface of the thermoelectric conversion module is directly attached to the external contact surface or closely attached to the external contact surface by sandwiching the heat conduction material when in use, so that the thermoelectric conversion module has good heat conduction with the external; when the external contact surface is a conductor, the heat conducting material and the insulating heat conducting material are required to be clamped.

[0030] Further, after the thermoelectric conversion module is installed, the following sealing scheme may be adopted: sealing all edges of the module (reserving necessary leads); when the working temperature variation range of the thermoelectric conversion module is large, a bidirectional pressure valve can be added to balance the internal and external pressures of the thermoelectric conversion module so as to prevent liquid, steam, dust, grease, scrap iron and other impurities from entering the thermoelectric conversion module to cause performance degradation or failure; the interior cavity region may also be filled with an insulating thermal insulator.

[0031] Further, the thermoelectric conversion module meets working conditions (such as temperature and vibration) in a use environment.

[0032] In one embodiment, the thermoelectric conversion module 303 is sandwiched between the heat source 301 and the cooling system 302, wherein the heat source surface 304 of the heat source 301 and the hot surface contact surface 305 of the thermoelectric conversion module 303 are a pair of curved surfaces which can be matched, the surface of the hot surface contact surface 305 is coated with the insulating heat conduction layer 306, the cold surface contact surface 307 of the thermoelectric conversion module 303 and the heat collection surface 308 of the cooling system 302 are a pair of curved surfaces which can be matched, the surface of the cold surface contact surface 307 is buckled with the insulating heat conduction cap 309, and the heat source 301 and the cooling system 302 clamp and fixedly mount the thermoelectric conversion module 303, and a uniform preset pressure value is maintained to ensure that all the contact surfaces are tightly attached and have good heat conduction. After the installation, when there is a temperature difference between the heat source 301 and the cooling system 302, the heat inside the thermoelectric conversion module 303 flows along the heat flow direction 310, so as to form a voltage between two ends 311 and 312 of the thermoelectric conversion module for supplying power to the outside. In this embodiment, for the purpose of illustration, only one pair of semiconductor materials is taken as an example, and the thermoelectric conversion module is formed by connecting a plurality of pairs of semiconductor materials in series or in series-parallel in the application of the inch visible output voltage.

[0033] In one embodiment, in the thermoelectric conversion module packaged by ceramic with a plane heat conduction contact surface, the N-type semiconductor material 401 and the P-type semiconductor material 402 are connected by the current guiding plate 403, wherein the middle part of the current guiding plate 403 is flexible, the current guiding plate 403 is attached to the ceramic plate 404 after the connection, the attaching surface conducts heat well, when the thermoelectric conversion module is used as a cooling plate, the lead 406 and the lead 407 are external power input terminals, and when the thermoelectric conversion module is used as a thermoelectric generation plate, the lead 406 and the lead 407 are external power output terminals. The thermoelectric conversion module adopting the flexible flow deflector has excellent heat conduction effect and longer service life with the same inch.

[0034] The positive significance of the public distributed thermoelectric conversion module is that the application range of the thermoelectric conversion module is expanded from a plane to a curved surface, the flexible flow deflectors replace the rigid flow deflectors, the application range of the thermoelectric conversion module is expanded, the service life is prolonged, the heat conduction efficiency of the module is improved, the output voltage and power of a single thermoelectric conversion module can be improved, the popularization of power generation by utilizing waste heat energy, particularly harmful heat energy, is greatly facilitated, and energy conservation and emission reduction are realized.

[0035] In a second aspect of the invention, the invention provides a novel internal combustion engine, which is characterized in that a temperature difference power generation device is arranged between the outer wall of the cylinder body of the internal combustion engine and a cooling system.

[0036] Further, the internal combustion engine refers to a heat engine that directly converts discharged thermal energy into mechanical energy by burning fuel therein.

[0037] Further, the cylinder block of the internal combustion engine refers to a heat generating portion of the internal combustion engine including the combustion chamber.

[0038] Further, the cooling system is a device for reducing the temperature of the cylinder block of the internal combustion engine, and is a device for reducing the temperature of the cold side of the thermoelectric conversion module in the thermoelectric generation device after the thermoelectric generation device is mounted. Including liquid circulation cooling system, forced air cooling system and natural air cooling heat abstractor, wherein: the heat collecting section of the cooling system (such as the water jacket of the existing liquid cooling internal combustion engine) and the cylinder body of the internal combustion engine can adopt an integrated or split structure, and the split cylinder body and the cooling system can adopt different materials.

[0039] Furthermore, the novel internal combustion engine can provide mechanical energy and electric energy to the outside in the same time inch during stable operation, the electric energy is converted from the heat energy of the high-temperature cylinder body of the internal combustion engine working in the time inch, and the stable operation means that the cooling system reaches a preset temperature range.

[0040] Further, the temperature difference power generation device generates power by utilizing the temperature difference between the high temperature of the outer wall of the internal combustion engine working inch cylinder body and the relatively low temperature of the cooling system.

[0041] Further, the temperature difference power generation device is arranged between the outer wall of the cylinder body of the internal combustion engine and the heat collection section of the cooling system.

[0042] Further, the thermoelectric power generation device includes 1 or more thermoelectric conversion modules, and at least 1 thermoelectric conversion module according to the first aspect of the present invention, and the electrical connection of the output ends of the different thermoelectric conversion modules may adopt 1 or more of the following connection modes:

[0043] independently supplying power to the outside;

[0044] the power is supplied to the outside after the series connection;

[0045] the power is supplied to the outside after the parallel connection;

[0046] and the power is supplied to the outside after the series-parallel hybrid connection.

[0047] Furthermore, a heat conducting material is clamped between the hot surface of the thermoelectric conversion module and the outer wall of the cylinder body of the internal combustion engine and tightly attached to the hot surface of the thermoelectric conversion module, so that the heat conduction between the outer wall of the cylinder body and the hot surface of the thermoelectric conversion module is good; the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system are closely attached to each other by sandwiching a heat conduction material therebetween, so that the heat conduction between the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system is good.

[0048] Furthermore, when the material of the heat collecting surface of the cylinder or the cooling system is conductor (such as metal material), the heat conducting material must be insulating material; when the material of the heat collecting surface of the cylinder body or the cooling system is an insulating material (such as ceramic), the heat conducting material does not need to be an insulating material.

[0049] Furthermore, the heat conduction material is preferably a flexible heat conduction material, so that not only can heat stress be released, but also the heat conduction effect can be improved, particularly, the binding surface is curved surface inch, and the flexible heat conduction material can partially compensate for slight processing errors between the surface of the cylinder body and the heat collection surface of the cooling system. The flexible heat conducting material comprises a phase change heat conducting material.

[0050] Further, after the cylinder body, the thermoelectric conversion module and the heat collecting section of the cooling system are installed together, the edges of all the thermoelectric conversion modules are sealed (necessary external leads are reserved). The inside of the sealing area can be kept with a cavity, or a bidirectional pressure valve is arranged to balance the internal and external pressure of the module, so as to prevent foreign matters such as liquid, steam, dust, grease, scrap iron and the like from entering the inside of the module to cause performance reduction or failure; the module interior cavity may also be filled with an insulating material.

[0051] Further, the thermoelectric conversion module, the heat conducting material, the sealing material and the filling material meet the high temperature and vibration requirements of the use environment of the internal combustion engine.

[0052] Further, temperature sensors such as thermocouples may be attached to the outer wall of the internal combustion engine block, the inside of the thermoelectric conversion module, or the two contact surfaces, and the number of the temperature sensors is 0 or 1 or more. The temperature sensor is used for measuring the multipoint temperatures of the outer wall of the cylinder body of the internal combustion engine, the interior of the temperature difference power generation device and the binding surface, and further the temperature of the cylinder body of the internal combustion engine is maintained within a preset temperature range by adjusting the output power of the temperature difference power generation device and the heat dissipation power of the cooling system.

[0053] Further, the internal combustion engine system may be provided with a separate controller for the thermoelectric power generation device, or a control function for the thermoelectric power generation device may be added to another controller in the system, so as to control and adjust parameters such as output voltage and current of the thermoelectric power generation device.

[0054] Furthermore, more than 1 pair of binding post mounting positions are reserved on a cylinder body of the internal combustion engine or a shell of a heat collection section of the cooling system and used for wiring of an external lead of the thermoelectric conversion module, wherein the binding posts are insulated from the cylinder body and the shell.

[0055] Furthermore, the internal combustion engine can be cancelled to provide mechanical energy for the cooling system, so that the mechanical energy consumption of the internal combustion engine is reduced, the effective output mechanical energy of the internal combustion engine is improved, and the driving mode of the cooling system of the internal combustion engine is changed from mechanical energy driving to electric energy driving. If change the mechanical type water pump of car into electric water pump, change viscose liquid radiator fan into electric fan.

[0056] Furthermore, when the power generation power of the thermoelectric power generation device meets the requirement inch, the load of the mechanical energy output end of the internal combustion engine can be further reduced, namely, the internal combustion engine is eliminated to provide mechanical energy for the matched components, the effective output mechanical energy of the internal combustion engine is improved, and the driving mode of the matched components is changed from mechanical energy driving to electric energy driving. For example, in a common passenger vehicle engine system: if the power generation power of the temperature difference power generation device is more than or equal to (the power of the cooling system and the power of the compressor of the refrigerating machine), the compressor of the refrigerating machine can be driven by electric energy instead of mechanical energy; further improve the output mechanical energy of the automobile engine.

[0057] Further, the electric energy generated by the thermoelectric generation can be directly used for supplying power to auxiliary electric equipment of the internal combustion engine system, or used for charging an energy storage system equipped with the internal combustion engine system, such as a 12V or 24V starting battery of a fuel-powered automobile or a battery pack of a fuel-powered hybrid automobile.

[0058] The novel internal combustion engine disclosed by the invention has the positive significance of generating electricity by utilizing partial harmful heat energy of the internal combustion engine, reducing the heat dissipation power of a cooling system, improving the efficiency of the internal combustion engine, saving energy and reducing emission.

[0059] In a third aspect of the invention, the invention provides a novel motor, which is characterized in that a temperature difference power generation device is arranged between a motor shell and a cooling system.

[0060] Further, the motor refers to an electromagnetic device for converting electric energy and mechanical energy according to the law of electromagnetic induction, and includes a motor for converting electric energy into mechanical energy and a generator for converting mechanical energy into electric energy.

[0061] Further, the motor housing refers to a heat generating portion of the housing of the motor, and if necessary, high temperature inside the motor can be transferred to the housing by using a high efficiency heat conducting material (such as a heat pipe).

[0062] Further, the cooling system is a device for reducing the temperature of the motor housing, and is used for reducing the temperature of the cold side of the thermoelectric conversion module in the thermoelectric power generation device after the thermoelectric power generation device is installed. Including liquid circulation cooling system, forced air cooling system and natural air cooling heat abstractor, wherein: the heat collecting section of the cooling system and the motor shell can adopt an integrated or split structure, and the split motor shell and the cooling system can adopt different materials.

[0063] Furthermore, the novel motor can additionally provide one or more groups of electric energy in a stable operation inch, the electric energy is converted from the heat energy of the high-temperature shell of the motor working inch, and the stable operation indicates that the cooling system reaches a preset temperature range.

[0064] Further, the temperature difference power generation device generates power by utilizing the temperature difference between the high temperature of the outer wall of the motor shell of the motor working inch and the relatively low temperature of the cooling system;

[0065] further, the thermoelectric power generation device is arranged between the outer wall of the motor shell and the heat collection section of the cooling system.

[0066] Further, the thermoelectric power generation device includes 1 or more thermoelectric conversion modules, and at least 1 thermoelectric conversion module according to the first aspect of the present invention, and the electrical connection of the output ends of the different thermoelectric conversion modules may adopt 1 or more of the following connection modes:

[0067] independently supplying power to the outside;

[0068] the power is supplied to the outside after the series connection;

[0069] the power is supplied to the outside after the parallel connection;

[0070] and the power is supplied to the outside after the series-parallel hybrid connection.

[0071] Furthermore, a heat conducting material is clamped between the hot surface of the thermoelectric conversion module and the outer wall of the motor shell and is tightly attached to the hot surface of the thermoelectric conversion module, so that the heat conduction between the outer wall of the motor shell and the hot surface of the thermoelectric conversion module is good; the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system are closely attached to each other by sandwiching a heat conduction material therebetween, so that the heat conduction between the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system is good.

[0072] Furthermore, when the heat collecting surface of the motor housing or the cooling system is made of a material of a conductor (such as a metal material), the heat conducting material must be made of an insulating material; when the heat collecting surface of the motor housing or the cooling system is made of insulating materials (such as ceramics), the heat conducting materials do not need to be made of insulating materials.

[0073] Furthermore, the heat conduction material is preferably a flexible heat conduction material, so that not only can heat stress be released, but also the heat conduction effect can be improved, particularly, the binding surface is curved surface inch, and the fine processing error between the surface of the flexible heat conduction motor shell and the heat collection surface of the cooling system can play a part of compensation role. The flexible heat conduction material comprises a phase change heat conduction material.

[0074] Further, after the motor shell, the thermoelectric conversion module and the cooling system heat collecting section are installed together, the edges of all the thermoelectric conversion modules are sealed (necessary external leads are reserved). The sealed area can be internally provided with a cavity or provided with a bidirectional pressure valve to balance the internal and external pressure of the module so as to prevent foreign matters such as liquid, steam, dust, grease, scrap iron and the like from entering the thermoelectric conversion module to cause performance reduction or failure; the module interior cavity may also be filled with an insulating thermal insulator. [0075] Furthermore, the thermoelectric conversion module, the heat conduction material, the sealing material and the filling material meet the high-temperature and vibration requirements of the use environment of the motor.

[0076] Furthermore, temperature sensors such as thermocouples can be mounted on the outer wall of the motor housing, the inside of the thermoelectric conversion module, or the two abutting surfaces, and the number of the temperature sensors is 0 or more than 1. The temperature sensor is used for measuring the multipoint temperatures of the outer wall of the motor shell, the inner part of the temperature difference power generation device and the binding surface, and further the temperature of the motor shell is maintained in a preset temperature range by adjusting the output power of the temperature difference power generation device and the heat dissipation power of the cooling system.

[0077] Further, the motor system may be provided with a separate controller for the thermoelectric power generation device, or a control function for the thermoelectric power generation device may be added to another controller in the system to control and adjust parameters such as output voltage and current of the thermoelectric power generation device, for example, a control function for output power of the thermoelectric power generation device may be added to the VCU of the electric vehicle to adjust output parameters of the thermoelectric power generation device according to the measured data of the temperature sensor

[0078] Furthermore, more than 1 pair of wiring post mounting positions are reserved on the motor shell or the shell of the heat collection section of the cooling system and used for wiring of an external lead of the thermoelectric conversion module, wherein the wiring posts are insulated from the motor shell and the shell.

[0079] The novel motor disclosed by the invention has the positive significance of generating electricity by utilizing partial harmful heat energy of the motor, reducing the heat dissipation power of a cooling system, improving the motor efficiency, saving energy and reducing emission.

[0080] In a fourth aspect of the present invention, there is provided a power generation method characterized in that a thermoelectric power generation device is installed between a heat source surface and a cooling system, and power is generated by utilizing a temperature difference between a high temperature of the heat source surface and a relatively low temperature of the cooling system. Wherein,

[0081] the heat energy of the heat source comprises waste heat energy and harmful heat energy, wherein: the waste heat energy refers to directly waste heat energy which cannot be utilized or is no longer used, such as solar energy, high-temperature tail gas of an automobile and heat energy discharged by a cooling system of the automobile; the harmful heat energy refers to the heat energy released by the energy conversion equipment during operation, and the heat energy must be dissipated through a cooling system to maintain the normal operation of the energy conversion equipment or the related equipment. For example, the heat energy generated after the fuel of the automobile engine burns and works on the piston cannot be utilized, and the engine can be damaged if the temperature is not reduced. Further, the harmful heat energy also includes heat energy that cannot be directly utilized due to too high temperature, and the temperature of the heat energy must be reduced to a preset range by a cooling system to be utilized. [0082] Further, when the heat source does not have a tangible heat source surface (e.g., solar energy, exhaust heat, etc.), the tangible heat source surface can be formed using a heat energy collection device and then utilized, for example, by irradiating the aluminum plate with sunlight, where the back surface of the aluminum plate is the heat source surface.

[0083] Further, the cooling system is a device for reducing the surface temperature of a heat source, and is used for reducing the temperature of the cold side of a thermoelectric conversion module in a thermoelectric power generation device after the thermoelectric power generation device is installed. Comprises a liquid circulation cooling system, a forced air cooling heat dissipation system, a natural air cooling heat dissipation device, a heat pipe and the like.

[0084] Furthermore, when the waste heat energy and temperature difference power generation device is used for power generation, a cheap and efficient cooling system is additionally arranged according to local conditions, and in order to improve the power generation capacity and reduce the energy consumption of the cooling system, the cooling system with high efficiency and low energy consumption or high efficiency and zero energy consumption is selected as far as possible, and heat can be taken away or led to the cooling system by using high-efficiency passive heat conduction equipment such as heat pipes. For example, the gap between the windward side, the side and the bottom of the vehicle running at high speed is a high-efficiency free natural air cooling system; in underwater or underwater installations, the equipment enclosure is an efficient and free cooling system.

[0085] The temperature difference power generation device is arranged between the heat source surface of the heat energy and the cooling system, and generates power by utilizing the temperature difference between the high temperature of the heat source surface and the relatively low temperature of the cooling system.

[0086] The thermoelectric power generation device includes 1 or more thermoelectric conversion modules, and at least 1 thermoelectric conversion module according to the first aspect of the present invention, and the electrical connection of the output ends of the different thermoelectric conversion modules may adopt 1 or more of the following connection methods:

[0087] independently supplying power to the outside;

[0088] the power is supplied to the outside after the series connection;

[0089] the power is supplied to the outside after the parallel connection;

[0090] and the power is supplied to the outside after the series-parallel hybrid connection.

[0091] Furthermore, a heat conducting material is clamped between the hot surface of the thermoelectric conversion module and the surface of the heat source and is tightly attached to the hot surface of the thermoelectric conversion module, so that the heat conduction between the surface of the heat source and the hot surface of the thermoelectric conversion module is good; the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system are closely attached to each other by sandwiching a heat conduction material therebetween, so that the heat conduction between the cold surface of the thermoelectric conversion module and the heat collection surface of the cooling system is good.

[0092] Furthermore, when the material of the heat source surface or the heat collecting surface of the cooling system is conductor (such as metal material), the heat conducting material must be insulating material; when the heat source surface or the heat collecting surface of the cooling system is made of insulating materials (such as ceramics), the heat conducting materials do not need to be made of insulating materials. [0093] Furthermore, the heat conduction material is preferably a flexible heat conduction material, so that not only can heat stress be released, but also the heat conduction effect can be improved, particularly, the binding surface is curved surface inch, and the flexible heat conduction material can partially compensate for slight processing errors between the surface of the heat source and the heat collection surface of the cooling system. The flexible heat conducting material comprises a phase change heat conducting material.

[0094] Further, after the heat source surface, the thermoelectric conversion modules and the heat collecting section of the cooling system are mounted together, the edges of all the thermoelectric conversion modules are sealed (necessary external leads are reserved). The sealed area can be internally provided with a cavity or provided with a bidirectional pressure valve to balance the internal and external pressure of the module so as to prevent foreign matters such as liquid, steam, dust, grease, scrap iron and the like from entering the thermoelectric conversion module to cause performance reduction or failure; the module interior cavity may also be filled with an insulating thermal insulator.

[0095] Further, the operating temperature ranges of the thermoelectric conversion module, the heat conductive material, the sealing material, and the filling material cover the temperature ranges of the heat source surface and the cooling system.

[0096] Further, the installation of the temperature difference power generation device meets the vibration environment of working inches of the heat source and the accessory equipment thereof.

[0097] Further, temperature sensors such as thermocouples may be mounted on the surface of the heat source, inside the thermoelectric conversion module, or on the two bonding surfaces, and the number of the temperature sensors is 0 or 1 or more. The temperature sensor is used for measuring the multipoint temperatures of the surface of the heat source, the interior of the thermoelectric generation device and the binding surface, and further the temperature of the motor shell is maintained within a preset temperature range by adjusting the output power of the thermoelectric generation device and the heat dissipation power of the cooling system.

[0098] Furthermore, the power generation system can be provided with a separate controller of the thermoelectric power generation device, or a control function of the thermoelectric power generation device is added to other controllers in the related system, so as to control and adjust parameters such as output voltage and current of the thermoelectric power generation device. If the output power control function of the temperature difference power generation device is added in the VCU of the electric automobile, the output parameters of the temperature difference power generation device are adjusted according to the measurement data of the temperature sensor.

[0099] Furthermore, more than 1 pair of binding post mounting positions are reserved on the surface of a heat source or the shell of a heat collection section of the cooling system and used for wiring an external lead of the thermoelectric conversion module, wherein the binding posts are insulated from the surface of the heat source and the shell.

[0100] Further, the positive significance of the power point method is illustrated by comparing the power flow schematic diagram of the existing energy conversion equipment with the power flow schematic diagram after the power generation method is adopted.

[0101] As shown in fig. 5, a schematic diagram of the energy flow of the conventional energy conversion device is shown: the energy conversion equipment 501 works in inches, the initial energy 502 is sent into the energy conversion equipment 501, limited by the technology, a part of waste energy 503 and a part of harmful heat energy 504 are provided, a part of cooling system driving energy 505 is separated from the energy output by the energy conversion equipment 501 and used for driving a cooling system to operate, the rest energy is the output energy 506 of the energy conversion equipment 501, the cooling system driving energy 505 is used for driving a cooling system 507 to operate, the cooling system 507 and the equipment heat source surface 508 cool the equipment heat source surface 508 through heat exchange, and become cooling system heat energy 509, for the waste energy 503, waste energy 510 can be recovered through a waste energy recovery device, and the rest waste energy 511 is completely discharged; for cooling system heat 509, waste heat 512 may be recovered by a heat recovery device, and the remaining waste heat 513 may be discharged.

[0102] As shown in fig. 6, a power flow diagram of an energy conversion device that generates electricity using harmful thermal energy: when the energy conversion equipment 601 works, the initial energy 602 is sent to the energy conversion equipment 601, and limited by the technology, a part of waste energy 603 and a part of harmful heat energy 604 are provided, a part of cooling system driving energy 605 is separated from the energy output by the energy conversion equipment 601 and is used for driving an energy cooling system to operate, the rest energy is the output energy 606 of the energy conversion equipment 601, the cooling system driving energy 605 is used for driving a cooling system 607 to operate, a thermoelectric generation device 614 is added between the heat collection surface of the cooling system 607 and the surface of the equipment heat source, the cooling system 607 cools the cold surface of the thermoelectric generation device 614 through heat exchange, and further cools the surface of the equipment heat source to become the heat energy 609 of the cooling system, as in the prior art, for the waste energy 603, the waste energy 610 can be recovered through the non-energy recovery device, and the residual waste energy 611 is discharged completely; for the cooling system heat energy 609, the waste heat 612 can be recovered by the heat energy recovery device, and the rest waste heat 613 is discharged completely;

[0103] different from the prior art, the temperature difference between the heat collection surface of the cooling system 607 and the equipment heat source surface 608 causes the thermoelectric generation device 614 to work, absorb heat energy, and output electric energy 615 for utilization, according to the energy conservation principle, under the condition that the heat energy of the equipment heat source surface 608 is not changed, the thermoelectric generation device consumes a part of the heat energy to be converted into the electric energy 615, so the temperature of the cold surface of the thermoelectric generation device is lower than the temperature of the equipment heat source surface 608, that is, the temperature of the heat collection surface of the cooling system is lower than the temperature of the original equipment heat source surface 508, so the original cooling system 507 can be replaced by the cooling system 607 with lower heat dissipation power;

[0104] the cooling system heat 609 is also reduced, with a reduction 616 from the original cooling system heat 509, resulting in a reduction in the final waste heat 613 from the original waste heat 513;

[0105] the weight volume and the cost of the cooling system 607 with low heat dissipation power are reduced by [0106] compared with the original cooling system 507, the cooling system 607 with low heat dissipation power can be driven only by lower driving energy 605 of the cooling system, compared with the original driving energy 505 of the cooling system, the driving energy 617 of the cooling system is saved, and the driving energy 617 of the cooling system is converted into increased output energy 618 of equipment.

[0107] The positive significance of the power generation method disclosed by the invention is that harmful heat energy or waste heat energy is utilized to generate power, so that the purposes of changing harm into treasure and changing waste into valuable are realized, and under the condition that input energy is kept unchanged:

[0108]1, additionally providing an electric energy;

[0109] the output energy of the equipment can be increased, namely, the efficiency of the energy conversion equipment is improved;

[0110]3, the heat dissipation power of the cooling system can be reduced, namely the weight, the volume and the cost of the cooling system are reduced;

[0111]4, on the mobile energy conversion equipment, the weight and the volume of the cooling system are reduced, which means that the weight of the cooling system is reduced, so that the overall energy output rate of the equipment can be further improved, for example, the endurance can be increased, and even the invisible cost and social resources can be reduced, for example, the carrying cost and the occupied area are reduced;

[0112] after the temperature of the final waste heat energy after power generation is reduced, the service life of peripheral equipment (the equipment is easy to age at high temperature) can be prolonged, or the heat resistance value of the peripheral equipment is reduced, so that the purchase cost is reduced.

[0113] After the efficiency of the energy conversion equipment is improved, on the premise of meeting the application, the input energy can be reduced, and the use of less energy means lower emission pollution, namely, energy conservation and emission reduction are realized. The invention has great significance in view of the huge number of energy conversion equipment kept in the current society.

Advantageous effects of the invention

Advantageous effects

[0114] The positive significance of the public thermoelectric conversion module lies in that the application range of the thermoelectric conversion module is expanded from a plane to a curved surface, the rigid flow deflector is replaced by the thermal stress resistant flow deflector, the application range of the thermoelectric conversion module is expanded, the service life is prolonged, the heat conduction efficiency of the module is improved, the output voltage and power of a single thermoelectric conversion module can be improved, the large-scale power generation by utilizing waste heat energy, especially the power generation by utilizing harmful heat energy, is possible, and the energy conservation and emission reduction are realized.

[0115] The invention discloses a novel internal combustion engine, a novel motor and a power generation method, which can generate power by utilizing harmful heat energy and waste heat energy of the internal combustion engine, the motor and other energy conversion equipment by utilizing the thermoelectric conversion module technology. The harmful heat energy is utilized to generate electricity, the heat dissipation energy consumption of the cooling system can be reduced, the heat dissipation energy consumption is increased and decreased, the energy conversion efficiency is obviously improved, the harm is changed into the treasure, and the effect is obvious; the waste heat energy is utilized to generate electricity, and the waste is changed into valuable due to the matching of a low-cost cooling system. At present and in a long time in the future, internal combustion engines, motors and other energy conversion equipment generating waste heat energy and harmful heat energy are still applied on a large scale, so that the energy-saving and emission-reducing effects are achieved in the same time of economic benefit and social benefit.

Brief description of the drawings

Drawings

[0116] FIG. 1 is a schematic view of a curved thermoelectric conversion module;

[0117] FIG. 2 is a schematic view of a curved thermoelectric conversion module including thermal stress resistant flow deflectors;

[0118] fig. 3 is a schematic diagram of the operation of a curved thermoelectric conversion module including thermal stress resistant flow deflectors;

[0119] fig. 4 is a schematic view of a planar thermoelectric conversion module comprising thermal stress resistant flow deflectors;

[0120] FIG. 5 is a schematic power flow diagram of a prior art energy conversion apparatus;

[0121] FIG. 6 is a schematic power flow diagram of an energy conversion device that utilizes harmful thermal energy to generate electricity.

Best mode for carrying out the invention

Best mode for carrying out the invention

[0122] An operation diagram of a thermoelectric conversion module with curved surface comprising thermal stress-resistant flow deflectors is shown in fig. 3, where only a thermoelectric conversion module comprising a pair of semiconductor materials is taken as an example, a thermoelectric conversion module 303 is sandwiched between a heat source 301 and a cooling system heat collecting section 302, wherein a heat source surface 304 and a hot surface contact surface 305 of the thermoelectric conversion module 303 are a pair of conformable curved surfaces, a surface of the hot surface contact surface 305 is coated with an insulating heat conducting layer 306, a cold surface contact surface 307 of the thermoelectric conversion module 303 and a cooling system heat collecting surface 308 are a pair of conformable curved surfaces, a surface of the cold surface contact surface 307 is covered with an insulating heat conducting cap 309, and a system operation is taken, wherein heat flows from the hot surface to the cold surface, a heat flow direction 310 generates electromotive force between two ends 311 and 312 of the thermoelectric conversion module 303, can generate electricity to the outside. The heat-conducting contact surfaces 305 and 307 of the thermoelectric conversion module 303 are curved surfaces, the flow deflector 313 of the thermoelectric conversion module 303 is an anti-thermal stress flow deflector, and when the temperature of the thermoelectric conversion module 303 changes, the middle section of the anti-thermal stress flow deflector 313 can deform, so that the thermal stress inside the thermoelectric conversion module 303 can be effectively released.

Modes for carrying out the invention

[0123] The invention is further illustrated by the following figures and specific examples. It is to be understood that these drawings and examples are for the purpose of illustrating the invention only and are not intended to limit the scope of the invention. Those skilled in the art can implement more functions or expand the application scope of the present invention by appropriate changes and substitutions according to the principle of the present invention.

[0124] Example 1, an operation diagram of a thermoelectric conversion module comprising a curved surface thermoelectric conversion module with thermal stress resistant flow deflectors, as shown in fig. 3, where only a thermoelectric conversion module comprising a pair of semiconductor materials is taken as an example, a thermoelectric conversion module 303 is sandwiched between a heat source 301 and a cooling system heat collecting section 302, wherein a heat source surface 304 and a hot surface contact surface 305 of the thermoelectric conversion module 303 are a pair of conformable curved surfaces, a surface of the hot surface contact surface 305 is coated with an insulating heat conducting layer 306, a cold surface contact surface 307 of the thermoelectric conversion module 303 and a surface of the cooling system heat collecting 308 are a pair of conformable curved surfaces, a surface of the cold surface contact surface 307 is covered with an insulating heat conducting cap 309, and the system is operated in a direction 310 in which heat energy flows from the hot surface to the cold surface, an electromotive force is generated between two ends 311 and 312 of the thermoelectric conversion module 303, can generate electricity to the outside. The heat-conducting contact surfaces 305 and 307 of the thermoelectric conversion module 303 are curved surfaces, the flow deflector 313 of the thermoelectric conversion module 303 is an anti-thermal stress flow deflector, and when the temperature of the thermoelectric conversion module 303 changes, the middle section of the anti-thermal stress flow deflector 313 can deform, so that the thermal stress in the thermoelectric conversion module 303 can be effectively released.

[0125] Embodiment 2 is a schematic view of a planar thermoelectric conversion module including thermal stress resistant flow deflectors, as shown in fig. 4, here, taking a thermoelectric conversion module including 2 pairs of semiconductor materials as an example, an N-type semiconductor material 401 and a P-type semiconductor material 402 are connected by a flow deflector 403, heat conducting ceramic pieces 404 and 405 are closely attached to the flow deflector 403, heat conduction is good, and a lead 406 and a lead 407 are lead wires of the thermoelectric conversion module. The flow deflector 403 is an anti-thermal stress flow deflector, and the heat-conducting contact surfaces of the thermoelectric conversion modules are all planar. As a more preferable embodiment, the heat conducting tiles 405 and 405 may be removed, and a flexible insulating and heat conducting material may be added between the heat conducting contact surface of the flow deflector 403 and the external environment for installation and use, while ensuring the sealing and insulation of the entire thermoelectric conversion module. The heat conduction effect is better, and the thermoelectric conversion efficiency is improved.

[0126] Embodiment 3, the method is applied to the railway electric traction locomotive, and the harmful heat energy of the ultrahigh-power motor of the railway electric traction locomotive is utilized to generate electricity. A thermoelectric generation device is added between a heating shell of an ultrahigh-power motor of a railway electric locomotive and a cooling system, wherein the thermoelectric generation device completely adopts the thermoelectric conversion module, and generates power by utilizing the temperature difference between the high temperature of the shell and the relatively low temperature of the cooling system. The generated power can be used for supplying power to an air conditioner or illumination of the electric locomotive, and also can be used for charging a battery system, so that the power can be more conveniently supplied to various weak current control devices of the motor nearby.

[0127] Embodiment 4, the power generation device is applied to a hybrid electric vehicle, and generates power by using the temperature difference between the high temperature of the engine cylinder and the cooling system. A temperature difference power generation device is added between the outer wall of the cylinder body of the engine and the cooling system, wherein the temperature difference power generation device completely adopts the thermoelectric conversion module, and the temperature difference between the high temperature of the cylinder body of the engine and the cooling system is utilized to generate power. The generated energy may be used to charge a battery system. And the mechanical energy output of the engine to the water pump or the cooling fan can be eliminated, the driving torque of the vehicle is improved, and the pure electric endurance is prolonged.

[0128] Embodiment 5, the temperature difference between the high temperature of the internal combustion engine cylinder and the cooling system in the fuel generator is utilized to generate electricity when the fuel generator is applied. A thermoelectric generation device is added between the outer wall of the cylinder body of the engine and the cooling system, wherein the thermoelectric generation device completely adopts the thermoelectric conversion module, and the thermoelectric conversion module generates power by utilizing the temperature difference between the high temperature of the cylinder body of the engine and the cooling system. The heat dissipation power of the cooling system can be reduced, so that the weight of the equipment is reduced; the energy-saving device can be used for providing energy for a cooling system, reducing the energy of the engine for driving the cooling system, improving the generated energy and improving the oil-electricity conversion efficiency.

[0129] Although the invention has been described in detail hereinabove with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto without departing from the scope of the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Industrial applicability

[0130] Thermoelectric conversion has many advantages, but the size and power of the module are limited because the thermal stress in the thermoelectric conversion module cannot be effectively released, and the application occasions of the thermoelectric conversion module are also limited by the plane contact surface. The problems are thoroughly solved by modifying the traditional thermoelectric conversion module by the curved surface heat-conducting contact surface and the flexible flow deflector, so that the power can be generated by using the visible waste heat energy and harmful heat energy, and the energy-saving and emission-reducing effects are obvious.

Sequence Listing free content

[0131] None.

Claims (7)

1. Claims
2. [ claim 1] A thermoelectric conversion module, wherein the current guide plate is a thermal stress resistant current guide plate, the middle section of the thermal stress resistant current guide plate is made of a flexible material or a rigid material capable of releasing a thermal stress structure, and the material characteristics of the current guide plate are good thermal and electrical conductivity, and the current guide plate is made of a metal or non-metal material including copper and single-layer or multi-layer graphene.
3. The thermoelectric conversion module according to claim 2, wherein the thermally conductive contact surface of the current guide plate is covered with an insulating thermally conductive layer or is provided with an insulating thermally conductive cap, and a rigid or slightly flexible connection is adopted between a plurality of insulating thermally conductive caps of the same thermoelectric conversion module or thermoelectric conversion modules linked in series and parallel with each other.
4. [ claim 3] the thermoelectric conversion module according to claim 1, characterized in that there is no substrate.
5. [ claim 4] the thermoelectric conversion module according to claim 1, wherein the thermally conductive contact surface is curved.
6. [ claim 5] A novel internal combustion engine, characterized in that a thermoelectric power generation device is installed between the outer wall of the cylinder block of the internal combustion engine and the cooling system, wherein:

   the internal combustion engine refers to a heat engine that directly converts discharged heat energy into mechanical energy by burning fuel inside thereof;

   the temperature difference power generation device generates power by utilizing the temperature difference between the high temperature of the outer wall of the working inch cylinder body of the internal combustion engine and the relatively low temperature of the cooling system;

   the thermoelectric power generation device includes 1 or more thermoelectric conversion modules, and at least 1 thermoelectric conversion module according to any one of claims 1 to 4.
7. The thermoelectric power generation device includes 1 or more thermoelectric conversion modules, and at least 1 thermoelectric conversion module according to any one of claims 1 to 4. [ claim 7] A power generation method characterized in that a thermoelectric power generation device is installed between a heat source surface and a cooling system to generate power by utilizing a temperature difference between a high temperature of the heat source surface and a relatively low temperature of the cooling system, wherein:

   the heat energy of the heat source comprises waste heat energy and harmful heat energy, wherein: waste heat energy refers to directly waste heat energy that is not available or no longer used; the harmful heat energy refers to heat energy released by the energy conversion equipment during operation, the heat energy must be dissipated through a cooling system to maintain the normal operation of the energy conversion equipment or related equipment, the harmful heat energy also comprises heat energy which cannot be directly utilized due to too high temperature, and the heat energy must be utilized after the temperature of the heat energy is reduced to a preset range through the cooling system;

   the cooling system is a device for reducing the surface temperature of a heat source, and after the thermoelectric power generation device is installed, the thermoelectric power generation device is used for reducing the cold side temperature of a thermoelectric conversion module in the thermoelectric power generation device, wherein the thermoelectric power generation device comprises more than 1 thermoelectric conversion module, and at least 1 thermoelectric conversion module as set forth in any one of claims 1 to 4.