Automobile exhaust thermoelectric power generation device

Abstract

The utility model relates to an automobile exhaust temperature difference power generation device which comprises a hot end heat exchanger, a temperature difference power generator, a honeycomb radiator, a heat conducting piece, a cylindrical inner wall, a power generation device gas inlet pipe, a power generation device gas outlet pipe and an inner shell. The temperature difference generator is sleeved with the honeycomb radiator, the two ends of the cylindrical inner wall are connected with the power generation device air inlet pipe and the power generation device air outlet pipe respectively, the cylindrical inner wall is fixedly arranged in the hot end heat exchanger, the inner side of the heat conducting piece is fixed in the cylindrical inner wall, and the outer side of the heat conducting piece is fixed on the inner side of the inner shell. The tail gas recovery device is installed at the front end of the automobile tail gas three-way catalyst, and the tail gas recovery device is composed of layer-by-layer filtering absorption nets and used for recycling tail gas in the tail gas emission process. The middle thermoelectric generator generates power by utilizing large temperature difference generated by automobile exhaust and airflow generated outside the pipeline when the automobile runs.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile exhaust gas temperature difference power generation device. Background Art

[0002] Automobile exhaust is a free energy source. The utilization of waste heat from automobile exhaust can not only improve energy utilization efficiency, but also reduce the emission of particulate matter and greenhouse gases.

[0003] Statistics show that only about 20% of the energy in automobile fuel is used to drive the car, while 60% of the 80% energy in the exhaust gas leaves the engine as sensible heat, and the remaining 20% ​​is unburned or only partially burned hydrocarbons.

[0004] The existing automobile exhaust temperature difference power generation technology is still subject to two limitations in its application. On the one hand, the thermoelectric figure of merit of the thermoelectric material is not high enough, resulting in low power generation efficiency; on the other hand, there is a lack of stable and efficient heat transfer equipment, which makes it difficult to form a stable temperature difference at both ends of the thermoelectric material. In addition, the existing temperature difference power generation system has problems such as small scale, poor scalability, difficulty in standardization and productization, high price, and possible damage to the original system. Utility Model Content

[0005] The utility model provides an automobile exhaust temperature difference power generation device, which is used to solve the problems raised by the background technology.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a car exhaust temperature difference power generation device, the temperature difference power generation device includes a hot end heat exchanger, a temperature difference generator, a honeycomb radiator, a heat conductive sheet, a cylindrical inner wall, an air inlet pipe of a generator, an air outlet pipe of a generator, and an inner shell. The temperature difference generator is fixedly arranged on the outside of the hot end heat exchanger, a honeycomb radiator is sleeved on the outside of the temperature difference generator, the two ends of the cylindrical inner wall are respectively connected to the air inlet pipe of the generator and the air outlet pipe of the generator, the cylindrical inner wall is fixedly arranged inside the hot end heat exchanger, the inner side of the heat conductive sheet is fixed to the inside of the cylindrical inner wall, and the outer side of the heat conductive sheet is fixed to the inside of the inner shell.

[0007] Preferably, the temperature difference power generation device further comprises a power storage device housing, a battery, and a super capacitor; the battery and the super capacitor are fixed inside the power storage device housing; the battery is electrically connected to the super capacitor; and the temperature difference generator is electrically connected to the super capacitor.

[0008] Preferably, the temperature difference power generation device also includes a recovery device air inlet, a recovery device shell, a recovery device air outlet, a metal fiber filter, a honeycomb filter, a fan blade, and a fan blade bracket. The metal fiber filter is installed inside the recovery device shell, the fan blade is installed inside the honeycomb filter, the fan blade bracket is externally rotatably connected to the fan blade, and the recovery device air inlet and the recovery device air outlet are fixedly connected on both sides of the recovery device shell.

[0009] Preferably, the recovery device outlet is installed in front of the three-way catalytic converter.

[0010] Preferably, the honeycomb radiator is in the shape of a hexagonal long cylinder.

[0011] Preferably, the recovery device housing is a circular hollow cylinder.

[0012] Beneficial effects of the utility model:

[0013] An exhaust gas recovery device is installed at the front end of the automobile exhaust three-way catalytic converter. The exhaust gas recovery device consists of layers of filtering and absorbing nets, which recycle the exhaust gas during the exhaust process. A power generation device is installed on the outer wall of the vehicle exhaust pipe, which fits tightly to provide a larger attachment area for the hot end of the inner layer of the temperature difference power generation module. The inner side of the heat conductive plate is welded to the cylindrical inner wall with a bionic stamen structure through a welding process. The bionic stamen design tightly wraps and fits the cylindrical inner wall layer by layer to reduce heat loss; the intermediate temperature difference generator uses the large temperature difference between the automobile exhaust and the airflow generated outside the pipe when the car is moving to generate electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the power generation part of a vehicle exhaust temperature difference power generation device of the utility model;

[0015] Figure 2 This is a structural diagram of the power generation part of a vehicle exhaust temperature difference power generation device of the utility model;

[0016] Figure 3 This is a structural diagram of the energy storage part of a vehicle exhaust temperature difference power generation device of the utility model;

[0017] Figure 4 The utility model is an overall structural diagram of an automobile exhaust gas temperature difference power generation device.

[0018] In the figure: hot end heat exchanger 1, temperature difference generator 2, honeycomb radiator 3, heat conducting sheet 4, cylindrical inner wall 5, generator air inlet pipe 6, generator air outlet pipe 7, temperature difference generator sheet 8, inner shell 9, storage device shell 11, battery 12, super capacitor 13, recovery device air inlet 15, recovery device shell 16, recovery device air outlet 17, metal fiber filter 18, honeycomb filter 19, fan blade 20, fan blade bracket 21, three-way catalytic converter 22. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. For the purpose of clarity, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the illustration, some conventional structures and components will be depicted in a simple schematic manner in the illustration.

[0020] like Figure 1-4 As shown, the utility model is a vehicle exhaust temperature difference power generation device, the temperature difference power generation device comprises a hot end heat exchanger 1, a temperature difference generator 2, a honeycomb radiator 3, a heat conductive sheet 4, a cylindrical inner wall 5, a generator air inlet pipe 6, a generator air outlet pipe 7, and an inner shell 9. The temperature difference generator 2 is fixedly arranged on the outside of the hot end heat exchanger 1, the honeycomb radiator 3 is sleeved on the outside of the temperature difference generator 2, the two ends of the cylindrical inner wall 5 are respectively connected to the generator air inlet pipe 6 and the generator air outlet pipe 7, the cylindrical inner wall 5 is fixedly arranged inside the hot end heat exchanger 1, the inner side of the heat conductive sheet 4 is fixed inside the cylindrical inner wall 5, and the outer side of the heat conductive sheet 4 is fixed inside the inner shell 9.

[0021] Furthermore, the temperature difference power generation device also includes a power storage device housing 11, a battery 12, and a super capacitor 13. The battery 12 and the super capacitor 13 are fixed inside the power storage device housing 11, the battery 12 is electrically connected to the super capacitor 13, and the temperature difference generator 2 is electrically connected to the super capacitor 13 through a wire.

[0022] Furthermore, the temperature difference power generation device also includes a recovery device air inlet 15, a recovery device housing 16, a recovery device air outlet 17, a metal fiber filter 18, a honeycomb filter 19, a fan blade 20, and a fan blade bracket 21. The metal fiber filter 18 is installed inside the recovery device housing 16, the fan blade 20 is installed inside the honeycomb filter 19, the fan blade bracket 21 is externally rotatably connected to the fan blade 20, and the recovery device housing 16 is fixedly connected to the recovery device air inlet 15 and the recovery device air outlet 17 on both sides.

[0023] Furthermore, the recovery device outlet 17 is installed in front of the three-way catalytic converter 22.

[0024] Furthermore, the honeycomb radiator 3 is in the shape of a hexagonal long cylinder.

[0025] Furthermore, the recovery device housing 16 is a circular hollow cylinder.

[0026] The model of the intermediate temperature difference generator 2 is TEC1-12706T200 high temperature resistant temperature difference generator, and a temperature difference power generation sheet 8 is arranged outside the intermediate temperature difference generator 2 .

[0027] Example:

[0028] The automobile exhaust gas enters the air inlet 15 of the recovery device. The exhaust gas pressure causes the fan blades 20 to rotate, driving the air flow to rotate and form a vortex, which is discharged through the metal fiber filter 18, enters the recovery device housing 16, flows to the recovery device outlet 17 and is discharged from the material recovery device. After entering the three-way catalytic converter 22 for further processing, it enters the power generation device for temperature difference power generation.

[0029] The automobile exhaust is filtered and recovered before the three-way catalytic converter 22, and then the exhaust passes through the three-way catalytic converter 22 and enters the power generation device through the power generation device intake pipe 6. After the automobile exhaust enters through the power generation device intake pipe 6, the temperature in the automobile pipeline rises rapidly, and the inner cylindrical inner wall 5 fits tightly to the automobile pipeline and transfers heat to the hot end of the inner shell 9 through the heat conducting sheet 4. Figure 1 As shown, the heat conducting sheet 4 is curled inwards, and the distance between each sheet structure is very small, and they are tightly wrapped together, maximizing the heat transfer during the heat transfer process and reducing heat loss.

[0030] The inner side of the heat conducting sheet 4 is welded to the inner cylindrical inner wall 5 with a bionic stamen structure through a welding process. The bionic stamen-shaped structure design of the heat conducting sheet 4 can quickly conduct heat, reduce heat loss, and maintain the hot end heat exchanger 1 at a higher temperature; the outer layer of the intermediate temperature difference generator 2 is close to the honeycomb radiator 3, and the honeycomb radiator 3 uses the airflow generated outside the pipeline when the car is moving to enter the pores for convection heat dissipation, so that a huge temperature difference is generated between the hot end and the cold end of the temperature difference generator 2, and power generation is achieved through the temperature difference generator 2, and the generated electric energy is transmitted to the super capacitor 13 along the wire for storage. The energy density of the energy stored by the super capacitor 13 is large, which prolongs the service life of the battery 12.

[0031] The above description is only a specific implementation of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.

Claims

1. An automobile exhaust gas temperature difference power generation device, characterized in that: The temperature difference power generation device comprises a hot end heat exchanger (1), a temperature difference generator (2), a honeycomb radiator (3), a heat conductive sheet (4), a cylindrical inner wall (5), an air inlet pipe (6) of the generator device, an air outlet pipe (7) of the generator device, and an inner shell (9). The temperature difference generator (2) is fixedly arranged on the outside of the hot end heat exchanger (1), the honeycomb radiator (3) is sleeved on the outside of the temperature difference generator (2), the two ends of the cylindrical inner wall (5) are respectively connected to the air inlet pipe (6) of the generator device and the air outlet pipe (7) of the generator device, the cylindrical inner wall (5) is fixedly arranged on the inside of the hot end heat exchanger (1), the inner side of the heat conductive sheet (4) is fixed to the inside of the cylindrical inner wall (5), and the outer side of the heat conductive sheet (4) is fixed to the inner side of the inner shell (9).

2. The automobile exhaust gas temperature difference power generation device according to claim 1, characterized in that: The temperature difference power generation device further comprises a power storage device housing (11), a storage battery (12), and a super capacitor (13); the storage battery (12) and the super capacitor (13) are fixed inside the power storage device housing (11); the storage battery (12) is electrically connected to the super capacitor (13); and the temperature difference generator (2) is electrically connected to the super capacitor (13).

3. The automobile exhaust gas temperature difference power generation device according to claim 1, characterized in that: The temperature difference power generation device also includes a recovery device air inlet (15), a recovery device housing (16), a recovery device air outlet (17), a metal fiber filter (18), a honeycomb filter (19), a fan blade (20), and a fan blade bracket (21); the metal fiber filter (18) is installed inside the recovery device housing (16); the fan blade (20) is installed inside the honeycomb filter (19); the fan blade bracket (21) is externally rotatably connected to the fan blade (20); and the recovery device housing (16) is fixedly connected to the recovery device air inlet (15) and the recovery device air outlet (17) on both sides.

4. The automobile exhaust gas temperature difference power generation device according to claim 3, characterized in that: The recovery device gas outlet (17) is installed in front of the three-way catalytic converter (22).

5. The automobile exhaust gas temperature difference power generation device according to claim 1, characterized in that: The honeycomb radiator (3) is in the shape of a hexagonal long cylinder.

6. The automobile exhaust gas temperature difference power generation device according to claim 3, characterized in that: The recovery device housing (16) is a circular hollow cylinder.

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