DE102018001095A1 - Device for range extension in electric vehicles by means of conversion of wind into electrical energy - Google Patents

Abstract

Main claim: Device for extending the range in electric vehicles (1) by converting wind (4) into electrical energy, characterized in that the airstream (4) through the in the front region of the electric vehicle (1) accommodated air flow system (2) flows through and thereby, on a generator (7) by means of a power transmission shaft (6) connected, rotor (3) which is located directly on the air inlet opening (2.1) inside the air duct system (2) drives, wherein the rotational speed of the rotor (3) by the suction effect, which is due to the wind (4.2 or 4.3) at the air outlet (2.4 or 2.5) is increased.

Description

The invention relates to a device for range extension in electric vehicles by converting wind into electrical energy.

Electric vehicles have been known for more than 100 years. At the beginning of the development of the automobile, electrically powered vehicles played an important role in city traffic. The electric vehicle could not compete with the combustion engine vehicles because of its short range and the long-lasting charging and was almost completely displaced from the city traffic.

The further development of the electric vehicle has become more important in the last ten to fifteen years due to the ever-shrinking fossil fuels. In addition to the ever increasing fuel costs, the environmental pollution that occurs, mainly due to the burning of fossil fuels, has also contributed to the development of the electric vehicle.

The electric vehicles have excellent advantages over the world-wide distributed combustion engine vehicles such as, very good efficiency and free of pollutants, but also a significant disadvantage, namely the range, which severely limits the competitiveness of electric vehicles.

Devices for converting wind into electrical energy are known in the art. In the published patent claims, mainly two types of devices are presented, with respect to conversion of wind into electrical energy. The first type of embodiment relates to devices which are arranged on the vehicle body, for converting wind into electrical energy. In this embodiment, a rotor, for example, on the roof of a vehicle, attached to move while driving the rotor in rotary motion and consequently to generate electrical energy. In this way, to generate additional electrical energy from the wind to extend the range of the electric vehicle is not possible because the arrangement of the rotor, the air resistance area of the vehicle is increased. The second type of embodiment relates to devices that are integrated or housed in the vehicle body in order to generate electrical energy by using the driving wind acting on the vehicle front. By this type of design, additional electrical energy can be generated without creating an additional air resistance surface on the vehicle to extend the range of the vehicle.

However, such devices, in particular devices that have air ducting systems, must be well thought out so that a high energy yield from the airstream becomes possible.

In the previously published patents can be seen that the presented devices, in particular devices that have air duct systems, in terms of air flow, have an important vulnerability, which significantly affects the efficiency of the device. In the presented devices, it is so that the airstream, after overcoming the arranged rotor, penetrates into the air duct system and thereby decreases in speed. The airstream entering the airflow system is displaced by the subsequently penetrating air volume and thus led out of the air guidance system. This means that the airstream on the one hand drives the rotor and on the other hand displaces the amount of air from the air guidance system, so that the efficiency of the device is significantly deteriorated.

The problem is solved according to the invention according to the features specified in the characterizing part of claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The most important component of the device according to the invention is the air guidance system or the special arrangement of its components, namely the air ducts. Due to the special arrangement of the air ducts in the main air duct, in which the rotor is housed, a wind suction effect, generated in the flow direction of the airstream. By this so-called wind suction effect, the speed of the rotor and thus the efficiency of the device, in view of the conversion of wind power into electrical energy, increased enormously.

Another advantage of the device is that the special arrangement of the air ducts, almost the entire surface of the electric vehicle acted upon wind, with the exception of the windshield surface, can be used to convert the wind power into electrical energy.

The device would have a particular effectiveness in long-distance vehicles, such as trucks and buses, since these vehicles have a significantly large wind-applied area, in contrast to the passenger car, have to cope with long distances at an almost constant speed.

• 1 ist die Transparente Draufsicht Zeichnung eines mit einer entsprechenden Vorrichtung ausgerüsteten Personenkraftwagens;
• 2 einen Schnitt durch das in 1 dargestellte Personenkraftwagens entlang der Linie A-A;
• 3 ist die perspektivische vordere Ansicht eines mit einer entsprechenden Vorrichtung ausgerüsteten Personenkraftwagens;
• 4 ist die perspektivische untere Ansicht eines mit einer entsprechenden Vorrichtung ausgerüsteten Personenkraftwagens;
• 5 eine perspektivische Schnitt das in 1 dargestellten Personenkraftwagens entlang der Linie A-A.
• 6 ist die perspektivische Zeichnung des Luftführungssystems.

The invention will be explained below with reference to the accompanying drawings, based on an embodiment nähr. It shows in detail:

• 1 Figure 3 is the transparent plan view drawing of a passenger car equipped with a corresponding device;
• 2 a cut through the in 1 illustrated passenger car along the line AA ;
• 3 is the front perspective view of a passenger car equipped with a corresponding device;
• 4 is the bottom perspective view of a passenger car equipped with a corresponding device;
• 5 a perspective cut the in 1 passenger car along the line AA ,
• 6 is the perspective drawing of the air duct system.

1 time the transparent top view drawing of a known passenger car ( 1 ), in which the inventive device is housed. From this representation it can be seen that the air guidance system ( 2 ) in the front area of the passenger car ( 1 ) is placed. In the middle and rear of the passenger car ( 1 ) are the generator ( 6 ) and the charging batteries ( 7 ). Furthermore, it can be seen that the air guidance system ( 2 ) about the same width of the passenger car ( 1 ), for the effective use of the airstream ( 4 ) or for generating a maximum wind suction at the air outlet opening ( 2.4 . 2.5 ), having.

2 time a cut through the in 1 illustrated passenger car ( 1 ) along the line AA , The cutting line AA is parallel to the airstream ( 4 ), so that the cross section of the electric vehicle ( 1 ) with the appropriate device in the direction of the wind ( 4 ) is shown cut.

This sectional view shows how the air duct system ( 2 ) or its components, the ventilation ducts ( 2.6 . 2.7 . 2.8 ) in the front interior of the passenger car ( 1 ) are accommodated and in which way the device according to the invention works.

In the illustration, the cross-sectional shapes of the air ducts ( 2.6 . 2.7 . 2.8 ) and their connection to the air management system ( 2 ) to recognize.

The air ducts ( 2.6 . 2.7 ), each having an air inlet opening ( 2.1 . 2.2 ) at the front of the vehicle against the wind ( 4 ) and each having an air outlet opening ( 2.3 . 2.4 ) under the passenger car ( 1 ) are directed to the wind opposite side, on, wherein the air inlet openings ( 2.1 . 2.2 ) and the air outlet openings ( 2.3 . 2.4 ) of the respective air duct ( 2.6 . 2.7 ) to each other, in height, are arranged offset.

The air guidance system ( 2 ) is created by the merger of the air ducts ( 2.6 . 2.7 . 2.8 ) at the air outlet ( 2.3 . 2.4 ), having a connection, wherein the air duct ( 2.6 ) directly above the air duct ( 2.7 ) and the extension of the air ducts ( 2.6 . 2.7 ), from the air outlet openings ( 2.3 . 2.4 ) through the air duct ( 2.8 ) is formed.

A rotor ( 3 ), a connection, by means of a power transmission shaft ( 5 ), with the generator, is directly at the air inlet ( 2.1 ) in the partial cross-section pipe, the air duct ( 2.6 ), wherein the rotor ( 3 ) on a support rod, which is connected at one end to the air duct ( 2.6 ) has a fixed anchorage, is rotatably connected.

At the air duct ( 2.7 ) is a cross-sectional constriction of air inlet opening ( 2.2 ) to the air outlet ( 2.3 ) to recognize. By this cross-sectional constriction is the, in the air duct ( 2.7 ), penetrating wind ( 4.2 ) and displaced at a higher speed.

The underside of the air duct ( 2.7 ) has an aerodynamic shape, to divert and increase the flow velocity of the airstream ( 4.3 ), on.

In the device according to the invention, the conversion of the wind power into electrical energy takes place during the travel of the electric vehicle ( 1 ). During the forward movement of the passenger car ( 1 ) arises at the front of the passenger car ( 1 ) a headwind or wind ( 4 ) passing through the air ducts ( 2.6 . 2.7 . 2.8 ) flows through it while the rotor ( 3 ) in rotational movement, wherein the flow velocity of the airstream ( 4.1 ), through which at the air outlet ( 2.4 ) resulting wind suction is increased. The wind suction at the air outlet ( 2.4 ) is caused by the fact that the wind ( 4.2 ) with a higher flow velocity than the airstream ( 4.1 ) in the air duct ( 2.8 ) and the wind ( 4.1 ) offset in a higher flow rate.

A further increase in the flow velocity of the airstream ( 4.1 ) is carried out by the at the air outlet ( 2.5 ) resulting wind suction. The wind suction at the air outlet ( 2.5 ) is caused by the fact that from the air outlet ( 2.5 ) escaping air volume through the driving wind ( 4.3 ) is displaced at a higher flow rate.

3 Time of the perspective front view of a equipped with a corresponding device passenger car ( 1 ). In this illustration, the air inlet openings ( 2.1 . 2.2 ) of the air guidance system ( 2 ) as well as the rotor ( 3 ) with the support rod and on the rotor ( 3 ) Anschussener power transmission shaft ( 5 ) to recognize. The air inlet opening ( 2.1 ), through which the wind ( 4.1 ), while driving, in the air duct ( 2.6 ), has a round opening shape. The air inlet opening ( 2.2 ), through which the wind ( 4.2 ), while driving, in the air duct ( 2.7 ), has a rectangular opening shape.

In order to maximize the opening area of the air inlet opening ( 2.2 ), so that as much as possible in amount of air in the air duct ( 2.7 ), the air duct ( 2.7 ) a maximum possible width and a maximum possible height.

The air duct ( 2.6 ) is at the air inlet ( 2.1 ) is formed with a funnel shape pieces, as much as possible in amount of air in the air duct ( 2.6 ) to introduce.

4 Time the perspective bottom view of a equipped with a corresponding device passenger car ( 1 ). In this illustration, the air outlet opening ( 2.5 ), from which the airstream ( 4.1 . 4.2 ) flows out, to recognize. Due to the maximum possible lower width of the air duct system ( 2 ), the airstream ( 4.3 ) directly under the passenger vehicle ( 1 ) flows, in its entire widths, to produce the most effective possible wind suction at the air outlet opening (FIG. 2.5 ), exploited.

Furthermore, it can be seen that the air duct ( 2.8 ) the extension of the two air ducts ( 2.6 . 2.7 ), both in width and in height, from the air outlet ( 2.5 ) forms.

Under the passenger vehicle ( 1 ) is, from the air outlet ( 2.5 ), a section ( 8th ) to the unimpeded flow of the airstream ( 4.1 . 4.2 . 4.3 ) to recognize. This cutout starts at the air outlet ( 2.5 ) and runs to the end of the passenger vehicle ( 1 ).

5 time the perspective cut the in 1 passenger car along the line AA , This illustration serves to better understand the 2 ,

6 time of the perspective drawing of the air guidance system ( 2 ) with its components. In this illustration, the embodiment of the air guidance system ( 2 ) or its components, the air ducts ( 2.6 . 2.7 . 2.8 ). The air duct ( 2.6 ) consists of a partial cross-section funnel, of a partial cross-section tube and of a partial cross-section, the space enlargement, from the connection point partial cross-section tube up to the air outlet ( 2.4 ) and a 90 ° arc deformation from the connection point of the partial cross-section tube up to the air outlet opening ( 2.4 ) having. In the air duct ( 2.7 ) is a cross-sectional constriction of air inlet opening ( 2.2 ) to the air outlet ( 2.3 ) to recognize. The air duct ( 2.8 ) has a rectangular cross-section. The three air ducts ( 2.6 . 2.7 . 2.8 ), with their merger, the air distribution system ( 2 ), with your connection point at the air outlet ( 2.3 . 2.4 ).

LIST OF REFERENCE NUMBERS

1

Electric vehicle.

2

Air duct system.

2.1, 2.2

Air intake opening.

2.3, 2.4, 2.5

Air outlet.

2.6, 2.7, 2.8

Air duct.

3

Rotor.

4

Wind.

4.1, 4.2, 4.3

Wind.

5

Power transmission shaft.

6

Generator.

7

Rechargeable battery.

8th

Neckline.

Claims (17)

Device for extending the range of electric vehicles (1) by converting wind (4) into electrical energy, characterized in that the airstream (4) through the, in the front interior of the electric vehicle (1) housed, air flow system (2) flows through and at one a generator (6), by means of a power transmission shaft (5), connected rotor (3), which is located directly on the air inlet opening (2.1) inside the air duct system (2) drives, wherein the rotational speed of the rotor (3) by the suction effect, due to the wind (4.2, 4.3) at the air outlet (2.4, 2.5 ) arises, is increased. Device after Claim 1 characterized by an air guiding system (2) having at least three air ducts (2.6, 2.7, 2.8). Device according to one of the preceding claims, characterized in that the rotor (3) is preferably housed in the partial cross-section tube of the air duct (2.6) and a connection by means of a power transmission shaft (5) with a generator (6). Device according to one of the preceding claims, characterized in that the wind suction, which at the air outlet opening (2.4), to increase the rotational speed of the rotor (3), arises, by the arrangement of the air ducts (2.7, 2.8) comes about. Device according to one of the preceding claims, characterized in that the air guidance system (2) at least two air inlet openings (2.1, 2.2), which are directed against the airstream (4) and at least three air outlet openings (2.3, 2.4, 2.5), the wind ( 4) are directed away from the side, wherein the air inlet openings (2.1, 2.2) and the air outlet openings (2.3, 2.4, 2.5) are arranged offset to one another. Device according to one of the preceding claims, characterized in that by the staggered arrangement of the air inlet openings (2.1, 2.2) and air outlet openings (2.3, 2.4, 2.5), the emergence of the wind suction at the air outlet (2.5) is possible. Device according to one of the preceding claims, characterized in that preferably the air outlet opening (2.4), to avoid a possible air accumulation in the interior of the air duct (2.6), at least the same, preferably a larger opening area than the cross-sectional area at the narrowest point of the air duct (2.6) occurs. Device according to one of the preceding claims, characterized in that the air duct (2.7) has a cross-sectional constriction from the air inlet opening (2.2) to the air outlet (2.3), to increase the speed of the airstream (4.2). Device according to one of the preceding claims, characterized by the air outlet openings (2.3, 2.4, 2.5), which are preferably stretched in width to the flow or the airstream (4.3) effectively in its entire width, to obtain a maximum suction effect at the air outlet (2.5) to exploit. Device according to one of the preceding claims, characterized in that the air duct (2.8) has the extension of the air ducts (2.6, 2.7) from the air outlet openings (2.3, 2.4). Device according to one of the preceding claims, characterized in that the wind (4.1) at the air outlet (2.4), by the higher flow velocity of the driving wind (4.2), is displaced in a higher flow velocity, so that at the air outlet (2.4) creates a suction effect. Device according to one of the preceding claims, characterized in that the underside of the air duct (2.7) has an aerodynamic shape for diverting and increasing the flow velocity of the airstream (4.3). Device according to one of the preceding claims, characterized in that by the air duct (2.8) flowing air at the air outlet (2.5) is offset by the higher flow velocity of the driving wind (4.3), in a higher flow velocity, so that at the air outlet (2.5) a Suction effect, which in turn increases the suction effect at the air outlet opening (2.4) arises. Device according to one of the preceding claims, characterized in that the conversion of the wind force in rotary motion by the arrangement of a rotor (3), preferably an aerodynamic rotor (3) takes place. Device according to one of the preceding claims, characterized in that the electric vehicle (1) has a cutout (8), for unimpeded flow of the airstream (4.1, 4.2, 4.3), wherein the height and the width of the cutout (8) equal Height and width of the air outlet (2.5). Device according to one of the preceding claims, characterized in that preferably a generator (6) with gear is used. Device according to one of the preceding claims, characterized in that The device can be applied to any means of transport, while maintaining the principle of operation, in different versions.

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