CN201080865Y - Automobile residual heat thermoelectric generation device - Google Patents

Abstract

The utility model provides a waste heat thermoelectric generating device of motor vehicles, wherein engine body and gas exhaust tube wall form a jacket structure which is filled with heat conductive mediums, a high-temperature end heat exchanger and a low-temperature end heat exchanger are respectively arranged at two sides of semiconductor thermoelectric generating assembly, the high-temperature end heat exchanger is connected with the jacket of the engine and the gas exhaust tube in parallel through pipeline so as to form a closed heat conductive medium circulation structure, the low-temperature end heat exchanger is communicated with the heat radiation water tank through pipeline so as to form a cooled water circulation structure, the electrodes of the semiconductor thermoelectric generating assembly are connected with a vehicle electrochemical cell so as to storage the converted electric energies. When motor vehicles run, the heat conductive mediums in the jacket formed by the engine body and the gas exhaust tube wall enters the high-temperature end heat exchanger through pipeline and then transfers heat energies to the semiconductor thermoelectric generating assembly, after the low-temperature end heat exchanger absorbs the heat energies of the semiconductor thermoelectric generating assembly, the two ends of the thermoelectric generating assembly generates temperature difference so as to generate current, thereby storing electricity for vehicle electrochemical cell.

Description

Motor vehicle waste heat thermoelectric power generation device

technical field

The utility model relates to a motor vehicle waste heat temperature difference power generation device, specifically an energy-saving power generation device that uses the temperature difference between the heat energy generated by the engine body and the exhaust pipe and the ambient temperature to generate electricity during the traveling process of the vehicle and ship, and belongs to the energy-saving and environmental protection device technology field.

Background technique

In order to reduce the noise of the automobile engine, the exhaust resistance of the current automobile exhaust pipe is large and the temperature is high. The heat consumed by the automobile exhaust pipe accounts for about 30%-40% of the fuel combustion heat, and the temperature of the exhaust pipe can reach about 800 ℃; Only about 40% of the fuel energy of a car engine is converted into power, and the remaining 60% of the energy is turned into heat and lost to the air. The emission of a large amount of heat energy has caused a huge waste of energy. Effective use of this part of energy will bring considerable economic benefits and good social benefits. Relevant materials will be searched and there are no literature reports on motor vehicle waste heat utilization devices.

Contents of the invention

The utility model provides a motor vehicle residual heat temperature difference power generation device, which converts the residual heat of the motor vehicle engine, exhaust pipe and other mechanisms into electric energy, effectively utilizes it, and reduces the thermal energy pollution of the motor vehicle.

The technical solution of the utility model is as follows: the engine body and the exhaust pipe wall are closed jacket structures, and the jacket is filled with a heat-conducting medium, and a high-temperature end heat exchanger and a low-temperature heat exchanger are respectively arranged on both sides of the semiconductor thermoelectric power generation component. The end heat exchanger, in which the high temperature end heat exchanger and the low temperature end heat exchanger are both hollow airtight containers, and the high temperature end heat exchanger is connected in parallel with the jacket of the engine and exhaust pipe through the pipeline to form a closed heat transfer medium circulation structure The heat exchanger at the low temperature end is connected with the cooling water tank through pipelines to form a cooling water circulation structure; the electrodes of the semiconductor thermoelectric power generation components are connected to the vehicle storage battery to store the converted electric energy.

When the motor vehicle is running, the heat transfer medium in the jacket of the engine body and the exhaust pipe wall enters the high-temperature end exchanger through the pipeline to transfer heat energy to the semiconductor thermoelectric power generation component, and the low-temperature end heat exchanger absorbs the heat energy of the semiconductor power generation component , sent to the cooling water tank through the pipeline to dissipate the heat and complete a cycle. At this time, the two ends of the thermoelectric power generation component generate a temperature difference, generate current, and store electricity for the on-board storage battery, thereby accomplishing the purpose of the utility model.

The electric energy stored in the battery can be used to drive lighting, air conditioning, audio-visual equipment and other electrical facilities, and can also be used to drive the motor to directly supply power to the car body, making the car a dual-purpose vehicle for fuel and electric vehicles. It is powered by a mixture of fuel engine and electric motor. The two kinds of power can be used interchangeably, which can solve the problem of electric energy charging accumulation at low speeds. Compared with normal fuel, it can save more than 30% of fuel costs, which is energy-saving and environmentally friendly. The beneficial effect of the utility model is that it can partially or completely replace the original generator on the vehicle and ship, and directly use the waste heat of the vehicle and ship to generate electricity through the thermoelectric power generation module, thereby reducing the energy consumption of the vehicle and ship and saving energy.

The positive effect of the utility model lies in: the waste heat of the automobile engine body and exhaust pipe is effectively collected by cooling circulating water, and then the heat energy is converted into electric energy by using the semiconductor thermoelectric power generation module, which directly drives the electric equipment or stores it in the battery . This energy can be used for car lighting and driving car air-conditioning system; it can also be used as power supply for fuel and electric vehicles to save energy. It has the characteristics of simple structure, low cost, economy and durability.

Description of drawings

Fig. 1, the structural schematic diagram of the utility model;

1. Engine body; 2. Exhaust pipe cooling jacket; 3. Heat exchanger at high temperature end; 4. Semiconductor thermoelectric power generation components; 5. Heat exchanger at low temperature end; 6. Cooling water tank; 7. Output electrode.

Figure 2. The connection diagram between the thermoelectric battery pack and the storage battery.

Detailed ways

As shown in Figure 1, the wall of the engine body 1 and the exhaust pipe 2 is a closed jacket structure, and the jacket is filled with a heat-conducting medium, and high-temperature end heat exchangers 3 are respectively arranged on both sides of the semiconductor thermoelectric power generation assembly 4 And the low-temperature end heat exchanger 5, wherein, the high-temperature end heat exchanger 3 and the low-temperature end heat exchanger 5 are hollow airtight containers, and the high-temperature end heat exchanger 3 passes through the jacket of the pipeline and the engine 1 and the exhaust pipe 2 Parallel connection forms a closed heat transfer medium circulation structure; the low-temperature end heat exchanger 5 communicates with the cooling water tank 6 through pipelines to form a cooling water circulation structure; the electrode 7 of the semiconductor thermoelectric power generation assembly 4 is connected to the vehicle storage battery to store the electric energy converted by it (see Fig. 2) The electrodes 7 of multiple sets of semiconductor thermoelectric power generation components 4 are connected in parallel to supply power to storage batteries or other electrical appliances after passing through isolation diodes and protection circuits.

Claims (1)

1. A motor vehicle waste heat thermoelectric power generation device, characterized in that: the engine body and the exhaust pipe wall are closed jacket structures, the jacket is filled with a heat-conducting medium, and a high-temperature power generator is respectively installed on both sides of the semiconductor thermoelectric power generation assembly. The heat exchanger at the high-end end and the heat exchanger at the low-temperature end, among which, the heat exchanger at the high-temperature end and the heat exchanger at the low-temperature end are both hollow airtight containers, and the heat exchanger at the high-temperature end is formed by parallel connection with the jacket of the engine and the exhaust pipe. Closed heat-conducting medium circulation structure; the low-temperature end heat exchanger communicates with the cooling water tank through pipelines to form a cooling water circulation structure; the electrodes of the semiconductor thermoelectric power generation components are connected to the on-board storage battery.

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