A temperature difference power generation device for automobile

Abstract

The utility model relates to the technical field of automobile power generation, and specifically discloses a temperature difference power generation device for automobiles, wherein a temperature conduction box is fixed on the bottom surface of the hood or trunk lid of the vehicle; a cold water tank and a hot water tank are respectively fixed on the cold end and the hot end of a semiconductor temperature difference power generation chip; the water outlet of the temperature conduction box is connected to the water inlet of a circulating water pump through a pipeline, and the water outlet of the circulating water pump is respectively connected to the cold water tank and the hot water tank through pipelines; the water inlet of the temperature conduction box is respectively connected to the cold water tank and the hot water tank through pipelines; the cold water tank and the hot water tank are also respectively connected to a vehicle-cold water circulation pipeline and a vehicle-hot water circulation pipeline through pipelines; the semiconductor temperature difference power generation chip is electrically connected to a battery; and a cold liquid distribution unit is used to control the liquid flow direction of the temperature conduction box, the cold water tank, and the hot water tank. The technical solution of the utility model can recover electric energy by itself, reduce the power consumption of the battery pack, and improve the energy saving of the product.

Description

Technical Field

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

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new vehicle power devices), integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. Taking pure electric vehicles as an example, the vehicle's drive, air conditioning, cooling, heating, etc. all rely on battery packs to provide electricity. How to reduce energy consumption and increase vehicle endurance is one of the core issues that need to be solved at present.

[0003] Therefore, a thermoelectric power generation device for automobiles is needed that can recycle electric energy by itself, reduce the power consumption of the battery pack, and improve the energy efficiency of the product. Utility Model Content

[0004] The utility model provides a temperature difference power generation device for automobiles, which can recover electric energy by itself, reduce the power consumption of battery packs and improve the energy saving of products.

[0005] In order to solve the above technical problems, this application provides the following technical solutions:

[0006] A temperature difference power generation device for automobiles, comprising: a temperature conduction box, a circulating water pump, a cold liquid distribution unit, a semiconductor temperature difference power generation sheet, a battery, a cold water tank and a hot water tank;

[0007] The temperature conduction box is fixed to the bottom surface of the hood or trunk lid of the vehicle;

[0008] The cold water tank and the hot water tank are respectively fixed at the cold end and the hot end of the semiconductor thermoelectric generator;

[0009] The water outlet of the temperature conduction box is connected to the water inlet of the circulating water pump through a pipeline, and the water outlet of the circulating water pump is connected to the cold water tank and the hot water tank through pipelines respectively; the water inlet of the temperature conduction box is connected to the cold water tank and the hot water tank through pipelines respectively;

[0010] The cold water tank and the hot water tank are also connected to the vehicle-cold water circulation pipeline and the vehicle-hot water circulation pipeline respectively through pipelines;

[0011] The semiconductor thermoelectric power generation sheet is electrically connected to the battery;

[0012] The cold liquid distribution unit is used to control the liquid flow direction of the temperature conduction box, cold water tank and hot water tank.

[0013] Further, the cold water tank comprises a first water inlet of the cold water tank, a second water inlet of the cold water tank, and a first water outlet of the cold water tank; the hot water tank comprises a first water inlet of the hot water tank, a second water inlet of the hot water tank, and a first water outlet of the hot water tank;

[0014] The first water inlet of the cold water tank, the second water inlet of the cold water tank, the first water outlet of the cold water tank, the first water inlet of the hot water tank, the second water inlet of the hot water tank, and the first water outlet of the hot water tank are all equipped with solenoid valves;

[0015] The water outlet of the circulating water pump is connected to the solenoid valves of the first water inlet of the cold water tank and the first water inlet of the hot water tank through pipelines respectively;

[0016] The water outlet end of the temperature conduction box is connected to the solenoid valves of the first water outlet of the cold water tank and the first water outlet of the hot water tank through pipelines respectively.

[0017] Furthermore, it also includes a four-way valve, which includes a first interface, a second interface, and a third interface, and each interface is equipped with a solenoid valve;

[0018] The solenoid valve of the first interface of the four-way valve is connected to a cold water circulation pipeline of the vehicle;

[0019] The solenoid valve of the second interface of the four-way valve is connected to a hot water circulation pipeline of the vehicle;

[0020] The solenoid valve of the third interface of the four-way valve is connected to the solenoid valve of the second water inlet of the cold water tank and the solenoid valve of the second water inlet of the hot water tank through pipelines.

[0021] Furthermore, the temperature conduction box includes a temperature conduction plate and a temperature conduction coil; the top surface of the temperature conduction plate is fixed to the bottom surface of the hood or trunk lid of the vehicle, and the temperature conduction coil is fixed to the bottom surface of the temperature conduction plate;

[0022] The water outlet of the temperature conducting coil is connected to the water inlet of the circulating water pump through a pipeline, and the water inlet of the temperature conducting coil is connected to the solenoid valves of the first water outlet of the cold water tank and the first water outlet of the hot water tank through pipelines respectively.

[0023] Furthermore, it also includes a temperature sensor; the temperature sensor is fixed on the outer wall of the coil and is used to detect the temperature of the outer wall of the coil.

[0024] Furthermore, the cold liquid distribution unit is electrically connected to the circulating water pump, the temperature sensor and each solenoid valve respectively.

[0025] Furthermore, the four-way valve also includes a fourth interface, and a solenoid valve is installed on the fourth interface. The solenoid valve of the fourth interface of the four-way valve is also connected to another hot water circulation pipeline or another cold water circulation pipeline of the vehicle.

[0026] Furthermore, it also includes a circuit branch pipe, the cold water tank also includes a second water outlet of the cold water tank; the hot water tank also includes a second water outlet of the hot water tank; the second water outlet of the cold water tank and the second water outlet of the hot water tank are both equipped with solenoid valves;

[0027] The loop branch pipe includes a first interface, a second interface, and a third interface, and each interface of the loop branch pipe is installed with a solenoid valve; the solenoid valve of the first interface of the loop branch pipe is also connected to a cold water circulation pipeline of the vehicle; the solenoid valve of the second interface of the loop branch pipe is also connected to a hot water circulation pipeline of the vehicle; the solenoid valve of the third interface of the loop branch pipe is connected to the solenoid valves of the second water outlet of the cold water tank and the second water outlet of the hot water tank through pipelines.

[0028] In summer, the heat from the engine hood is transferred to the temperature conduction plate, and the liquid in the temperature conduction coil is heated by the temperature conduction plate. The cold liquid distribution unit controls the opening of the solenoid valves at the first water inlet and the first water outlet of the hot water tank according to the data of the temperature sensor, and controls the operation of the circulating water pump, so that the heated liquid flows from the temperature conduction coil into the hot water tank for circulation, and transfers the heat to the hot end of the semiconductor thermoelectric power generation chip; the cold liquid distribution unit also controls the opening of the solenoid valve at the first interface of the four-way valve and the solenoid valve at the second water inlet of the cold water tank; the liquid in the cold water circulation pipeline flows into the cold water tank, and the temperature is transferred to the cold end of the semiconductor thermoelectric power generation chip; a temperature difference is generated between the hot end and the cold end of the semiconductor thermoelectric power generation chip, which is used to generate electricity naturally, and the low-voltage battery is charged after voltage stabilization.

[0029] In winter, the temperature of the liquid in the temperature conduction coil is low. The cold liquid distribution unit controls the opening of the solenoid valves at the first water inlet and the first water outlet of the cold water tank according to the data of the temperature sensor, and controls the operation of the circulating water pump to allow the low-temperature liquid to flow from the temperature conduction coil into the cold water tank for circulation; the cold liquid distribution unit also controls the opening of the solenoid valve at the second interface of the four-way valve and the solenoid valve at the second water inlet of the hot water tank; the liquid in the hot water circulation pipeline flows into the hot water tank, and the temperature is transferred to the hot end of the semiconductor temperature difference power generation chip; by switching the flow direction of the controlled liquid, the temperature difference between the cold end and the hot end of the semiconductor temperature difference power generation chip continues to be maintained for power generation.

[0030] The electricity generated can be supplied to the vehicle's refrigeration or heating equipment, reducing power consumption and providing a warm winter and cool summer experience.

[0031] In summary, this solution can recycle electrical energy by itself, reduce battery power consumption, and improve product energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a first embodiment of a thermoelectric power generation device for a car;

[0033] Figure 2 This is a schematic diagram of a third embodiment of a temperature difference power generation device for an automobile. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] The symbols in the drawings of the specification include: temperature conduction box 1, circulating water pump 2, semiconductor temperature difference power generation chip 3, four-way valve 4, cold water tank 5, hot water tank 6, first water inlet 7 of cold water tank, second water inlet 8 of cold water tank, first water outlet 9 of cold water tank, first water inlet 10 of hot water tank, second water inlet 11 of hot water tank, first water outlet 12 of hot water tank, loop branch pipe 13, second water outlet 14 of cold water tank, second water outlet 15 of hot water tank.

[0036] Embodiment 1

[0037] A temperature difference power generation device for a car in this embodiment includes: a temperature conduction box 1, a circulating water pump 2, a cold liquid distribution unit, a semiconductor temperature difference power generation sheet 3, a four-way valve 4, a battery, a cold water tank 5, a hot water tank 6 and a temperature sensor.

[0038] The temperature conduction box 1 includes a temperature conduction plate and a temperature conduction coil; the top surface of the temperature conduction plate is fixed to the bottom surface of the hood or trunk lid of the vehicle, and the temperature conduction coil is fixed to the bottom surface of the temperature conduction plate;

[0039] The cold water tank 5 and the hot water tank 6 are respectively fixed at the cold end and the hot end of the semiconductor temperature difference power generation sheet 3; the cold water tank 5 includes a first water inlet 7 for the cold water tank, a second water inlet 8 for the cold water tank, and a first water outlet 9 for the cold water tank; the hot water tank 6 includes a first water inlet 10 for the hot water tank, a second water inlet 11 for the hot water tank, and a first water outlet 12 for the hot water tank; the first water inlet 7 for the cold water tank, the second water inlet 8 for the cold water tank, the first water outlet 9 for the cold water tank, the first water inlet 10 for the hot water tank, the second water inlet 11 for the hot water tank, and the first water outlet 12 for the hot water tank are all equipped with solenoid valves.

[0040] The water outlet end of the temperature conducting coil is connected to the water inlet end of the circulating water pump 2 through a pipeline, and the water outlet end of the circulating water pump 2 is connected to the solenoid valves of the first water inlet 7 of the cold water tank and the first water inlet 10 of the hot water tank through pipelines; specifically, the pipeline is divided into two by a branch pipe; the water inlet end of the temperature conducting coil is connected to the solenoid valves of the first water outlet 9 of the cold water tank and the first water outlet 12 of the hot water tank through pipelines.

[0041] The four-way valve 4 includes a first interface, a second interface, a third interface and a fourth interface, each interface is equipped with a solenoid valve; the solenoid valve of the first interface of the four-way valve 4 is also connected to a cold water circulation pipeline of the vehicle; the solenoid valve of the second interface of the four-way valve 4 is also connected to a hot water circulation pipeline of the vehicle; the solenoid valve of the third interface of the four-way valve 4 is connected to the solenoid valve of the second water inlet 8 of the cold water tank and the solenoid valve of the second water inlet 11 of the hot water tank through pipelines.

[0042] The semiconductor thermoelectric power generation sheet 3 is electrically connected to the battery;

[0043] The temperature sensor is fixed on the outer wall of the coil and is used to detect the temperature of the outer wall of the coil;

[0044] The cold liquid distribution unit is electrically connected to the circulating water pump 2, the temperature sensor and each solenoid valve.

[0045] For better installation and space saving, the temperature conducting coil, cold water tank 5 and hot water tank 6 are all flat. The cold water circulation pipeline of the vehicle can be the cold water in the whole vehicle water circulation system after natural air cooling; the hot water circulation pipeline of the vehicle can be the hot water after the motor, electronic control and other equipment are heated.

[0046] For example, in the summer, when the sun is shining on the hood, the heat is transferred to the heat conducting plate, and the liquid in the heat conducting coil is heated by the heat conducting plate. The cold liquid distribution unit controls the electromagnetic valves of the first water inlet 10 and the first water outlet 12 of the hot water tank to open according to the data of the temperature sensor, and controls the circulation water pump 2 to work, so that the heated liquid flows from the heat conducting coil into the hot water tank 6 for circulation, and transfers the heat to the hot end of the semiconductor temperature difference power generation chip 3;

[0047] The cold liquid distribution unit also controls the electromagnetic valve of the first interface of the four-way valve 4 and the electromagnetic valve of the second water inlet 8 of the cold water tank to open; the liquid in the cold water circulation pipeline flows into the cold water tank 5, and the temperature is transferred to the cold end of the semiconductor temperature difference power generation chip 3;

[0048] In summer, the water in the temperature conducting coil can be heated to 70℃-80℃, so that the temperature difference between the hot end and the cold end of the semiconductor thermoelectric power generation sheet 3 reaches 30℃-50℃, which is used for natural power generation and charging the low-voltage battery after voltage stabilization. In order to improve the efficiency of thermoelectric power generation, in this embodiment, multiple semiconductor thermoelectric power generation sheets 3 are connected in series to form voltage superposition, increase the output voltage and power, and then connected to a preset voltage stabilizer for voltage stabilization.

[0049] In winter, since pure electric vehicles have no engine, the temperature of the hood is mainly affected by the ambient temperature and is relatively low (plug-in hybrid or fuel vehicles can set the temperature guide plate and temperature guide coil on the trunk lid), and the temperature of the liquid in the temperature guide coil is relatively low (about 0°C-10°C). The cold liquid distribution unit controls the opening of the solenoid valves of the first water inlet 7 and the first water outlet 9 of the cold water tank according to the data of the temperature sensor, and controls the operation of the circulating water pump 2, so that the low-temperature liquid flows from the temperature guide coil into the cold water tank 5 for circulation;

[0050] The cold liquid distribution unit also controls the electromagnetic valve of the second interface of the four-way valve 4 and the electromagnetic valve of the second water inlet 11 of the hot water tank to open; the liquid in the hot water circulation pipeline flows into the hot water tank 6, and the temperature is transferred to the hot end of the semiconductor temperature difference power generation chip 3;

[0051] By switching the flow direction of the controlled liquid, the temperature difference between the cold end and the hot end of the semiconductor thermoelectric power generation sheet 3 is maintained to generate electricity. The generated electricity can be supplied to the refrigeration or heating equipment of the whole vehicle, reducing power consumption and bringing a warm winter and cool summer experience.

[0052] In an area of ​​42 square centimeters, 100 40mm x 40mm semiconductor thermoelectric power generation sheets 3 can be placed, and as long as there is a temperature difference of 30 to 50 degrees, one sheet can generate about 1 to 2V of electricity, so as long as 10 sheets are connected in series in a small area, 12V electricity used by cars can be generated. This solution can generate considerable electricity and has a large design redundancy.

[0053] A decentralized installation method can also be adopted. For example, an area of ​​about 16 square centimeters can hold 16 40mm×40mm semiconductor thermoelectric power generation chips 3. Therefore, the housing of the battery, motor, IGBT, ADAS, etc. of the new energy vehicle can be decentralized to hold a number of 16 square centimeters of semiconductor thermoelectric power generation chips 3 connected in series, which are sufficient to generate 12V of electrical energy.

[0054] Embodiment 2

[0055] The difference between this embodiment and the first embodiment is that, in this embodiment, the solenoid valve of the fourth interface of the four-way valve 4 is also connected to another hot water circulation pipeline or another cold water circulation pipeline of the vehicle.

[0056] More low-temperature or high-temperature liquids can be connected to maintain the temperature difference at both ends of the semiconductor thermoelectric power generation sheet 3 and improve the power generation efficiency.

[0057] Embodiment 3

[0058] like Figure 2 As shown, the difference between this embodiment and the first embodiment is that this embodiment further includes a loop branch pipe 13. The cold water tank 5 also includes a cold water tank second water outlet 14; the hot water tank 6 also includes a hot water tank second water outlet 15; the cold water tank second water outlet 14 and the hot water tank second water outlet 15 are both equipped with solenoid valves.

[0059] The loop branch pipe 13 includes a first interface, a second interface, and a third interface, and each interface of the loop branch pipe 13 is installed with a solenoid valve; the solenoid valve of the first interface of the loop branch pipe 13 is also connected to a cold water circulation pipeline of the vehicle; the solenoid valve of the second interface of the loop branch pipe 13 is also connected to a hot water circulation pipeline of the vehicle; the solenoid valve of the third interface of the loop branch pipe 13 is connected to the solenoid valves of the second water outlet 14 of the cold water tank and the second water outlet 15 of the hot water tank through pipelines.

[0060] Taking summer as an example, the cold liquid distribution unit also controls the electromagnetic valve of the first interface of the four-way valve 4, the electromagnetic valve of the second water inlet 8 of the cold water tank, the electromagnetic valve of the second water outlet 14 of the cold water tank, the electromagnetic valve of the first interface of the loop branch pipe 13, and the electromagnetic valve of the third interface of the loop branch pipe 13 to open; the liquid in the cold water circulation pipeline flows into the cold water tank 5, transfers the temperature to the cold end of the semiconductor temperature difference power generation chip 3, and then flows out from the second water outlet 14 of the cold water tank and returns to a cold water circulation pipeline. Similarly in winter, the liquid in a hot water circulation pipeline enters from the second water inlet 11 of the hot water tank, enters and exits from the second water outlet 15 of the hot water tank, and returns to a hot water circulation pipeline.

[0061] Compared with the interconnection method in the first embodiment, the circulation efficiency is higher.

[0062] The above are only embodiments of the utility model, and the utility model is not limited to the fields involved in this implementation case. The common sense such as the known specific structure and characteristics in the scheme is not described too much here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before the date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A thermoelectric power generation device for a car, characterized in that: include: Temperature conduction box, circulating water pump, cold liquid distribution unit, semiconductor temperature difference power generation sheet, battery, cold water tank and hot water tank; The temperature conduction box is fixed to the bottom surface of the hood or trunk lid of the vehicle; The cold water tank and the hot water tank are respectively fixed at the cold end and the hot end of the semiconductor thermoelectric generator; The water outlet of the temperature conduction box is connected to the water inlet of the circulating water pump through a pipeline, and the water outlet of the circulating water pump is connected to the cold water tank and the hot water tank through pipelines respectively; the water inlet of the temperature conduction box is connected to the cold water tank and the hot water tank through pipelines respectively; The cold water tank and the hot water tank are also connected to the vehicle-cold water circulation pipeline and the vehicle-hot water circulation pipeline respectively through pipelines; The semiconductor thermoelectric power generation sheet is electrically connected to the battery; The cold liquid distribution unit is used to control the liquid flow direction of the temperature conduction box, cold water tank and hot water tank.

2. The thermoelectric power generation device for automobile according to claim 1, characterized in that: The cold water tank comprises a first water inlet of the cold water tank, a second water inlet of the cold water tank, and a first water outlet of the cold water tank; the hot water tank comprises a first water inlet of the hot water tank, a second water inlet of the hot water tank, and a first water outlet of the hot water tank; The first water inlet of the cold water tank, the second water inlet of the cold water tank, the first water outlet of the cold water tank, the first water inlet of the hot water tank, the second water inlet of the hot water tank, and the first water outlet of the hot water tank are all equipped with solenoid valves; The water outlet of the circulating water pump is connected to the solenoid valves of the first water inlet of the cold water tank and the first water inlet of the hot water tank through pipelines respectively; The water outlet end of the temperature conduction box is connected to the solenoid valves of the first water outlet of the cold water tank and the first water outlet of the hot water tank through pipelines respectively.

3. The thermoelectric power generation device for automobile according to claim 2, characterized in that: It also includes a four-way valve, which includes a first interface, a second interface, and a third interface, and each interface is equipped with a solenoid valve; The solenoid valve of the first interface of the four-way valve is connected to a cold water circulation pipeline of the vehicle; The solenoid valve of the second interface of the four-way valve is connected to a hot water circulation pipeline of the vehicle; The solenoid valve of the third interface of the four-way valve is connected to the solenoid valve of the second water inlet of the cold water tank and the solenoid valve of the second water inlet of the hot water tank through pipelines.

4. The thermoelectric power generation device for automobile according to claim 3, characterized in that: The temperature conduction box includes a temperature conduction plate and a temperature conduction coil; the top surface of the temperature conduction plate is fixed to the bottom surface of the hood or trunk lid of the vehicle, and the temperature conduction coil is fixed to the bottom surface of the temperature conduction plate; The water outlet of the temperature conducting coil is connected to the water inlet of the circulating water pump through a pipeline, and the water inlet of the temperature conducting coil is connected to the solenoid valves of the first water outlet of the cold water tank and the first water outlet of the hot water tank through pipelines respectively.

5. The thermoelectric power generation device for automobile according to claim 4, characterized in that: It also includes a temperature sensor; the temperature sensor is fixed on the outer wall of the coil and is used to detect the temperature of the outer wall of the coil.

6. The thermoelectric power generation device for automobile according to claim 5, characterized in that: The cold liquid distribution unit is electrically connected to the circulating water pump, the temperature sensor and each solenoid valve respectively.

7. The thermoelectric power generation device for automobile according to claim 6, characterized in that: The four-way valve also includes a fourth interface, on which a solenoid valve is installed. The solenoid valve of the fourth interface of the four-way valve is also connected to another hot water circulation pipeline or another cold water circulation pipeline of the vehicle.

8. The thermoelectric power generation device for automobile according to claim 6, characterized in that: It also includes a circuit branch pipe, the cold water tank also includes a second water outlet of the cold water tank; the hot water tank also includes a second water outlet of the hot water tank; the second water outlet of the cold water tank and the second water outlet of the hot water tank are both equipped with solenoid valves; The loop branch pipe includes a first interface, a second interface, and a third interface, and each interface of the loop branch pipe is installed with a solenoid valve; the solenoid valve of the first interface of the loop branch pipe is also connected to a cold water circulation pipeline of the vehicle; the solenoid valve of the second interface of the loop branch pipe is also connected to a hot water circulation pipeline of the vehicle; the solenoid valve of the third interface of the loop branch pipe is connected to the solenoid valves of the second water outlet of the cold water tank and the second water outlet of the hot water tank through pipelines.

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