DE102017217159A1 - Energy recovery system, motor vehicle and energy recovery process - Google Patents

Abstract

The invention relates to an energy recovery system (10) for obtaining electrical energy from wind and / or sun. The energy recovery system (10) comprises a motor vehicle (12), which comprises an energy recovery device (14), which is designed to generate electrical energy from wind and / or sun, and a control unit (36), which is designed to move the energy recovery device (16). 14) from a first state (24), in which a gain of electrical energy by the energy recovery device (14) is not possible, in a second state (26), in which a gain of electrical energy by the energy recovery device (14) is enabled, and / or causing the energy recovery device (14) to move from the second state (26) to the first state (24).

Description

The invention relates to an energy recovery system for obtaining electrical energy from wind and / or sun. Furthermore, the invention relates to a motor vehicle for such a power generation system. Furthermore, the invention relates to an energy harvesting process.

DE 10 2012 006 836 A1 discloses a combined parking and charging device for an electric or hybrid vehicle, comprising at least one receiving unit for receiving the electric or hybrid vehicle, wherein the receiving unit comprises at least one charging unit for charging an electrical energy storage of the electric or hybrid vehicle with electrical energy.

DE 10 2011 079 242 A1 discloses a charging station for charging an electric vehicle. The charging station comprises an electrical buffer for temporarily storing energy supplied by a photovoltaic system. Furthermore, an interface for connecting a photovoltaic system is provided, for example a photovoltaic system on a house roof. The charging station also includes an electric vehicle charging interface for charging an electric vehicle. In addition, an electrical power grid interface to a power grid is preferably provided. Furthermore, the charging station comprises a control device which controls the operation of the charging station. The control device is configured to monitor the state of charge of the buffer during charging of the buffer with energy supplied by the photovoltaic system. The controller causes the buffer to be charged with power supplied by the photovoltaic system as long as the state of charge of the buffer has not reached a target charge state. The control device preferably also causes energy supplied by the photovoltaic system to be fed into the power supply via the electrical power grid interface when the state of charge has reached the target charge state.

DE 10 2010 015 758 A1 discloses a charging station for charging an electrically powered motor vehicle that can charge and latch electrical energy from various sources of energy. The charging station has a buffer memory which comprises a plurality of high-capacity capacitors, for example double-layer capacitors. Such a charging station is able to deliver the slower charged electrical energy to the electrically powered motor vehicle faster. Advantageously, the motor vehicle also has an energy store, which comprises a plurality of capacitors of high capacity.

As electromobility progresses and the general trend towards renewable energies continues, new concepts are needed to drive this change. So far, motor vehicles of all kinds are considered only as consumers or storage of energy. Thus, currently electric vehicles, which include hybrid vehicles, partly charged by means of a plug-in hybrid system, partly by means of conventional fuel engines or by recuperators, which are designed to convert the kinetic energy when rolling or braking the motor vehicle into electrical energy. On the other hand, increasingly powerful power plants are needed to meet the ever-growing energy needs of different energy sources (such as renewable, coal, fuel, waste, etc.). The power plants are usually centralized and therefore located at a great distance from the actual consumer.

Due to the Joule effect in the transmission of electrical energy from the power plant to the consumer and the relatively high energy demand, significantly more energy must be gained to compensate for the induced by the Joule effect losses.

The invention has for its object to provide measures by which a better use of energy is possible.

The object is solved by the subject matter of the independent claims. Preferred embodiments of the invention are the subject of the dependent claims.

The invention provides an energy recovery system for recovering electrical energy from wind and / or sun. The power generation system comprises a motor vehicle having an energy recovery device configured to generate electrical energy from wind and / or sun, and a control unit configured to move the energy collection device from a first state in which electrical energy is recovered by the energy recovery device Energy recovery device is not allowed to cause a second state, in which a gain of electrical energy by the energy recovery device is enabled, and / or moving the energy recovery device from the second state to the first state. The motor vehicle may have an autonomous driving unit, wherein the motor vehicle is movable by means of the autonomous driving unit between a parking position in which an energy generation is prevented, and a power generation position in which energy is obtained by means of the energy recovery device. The parking position is thus an example of the first state and the Energy recovery position is thus an example of the second state. In particular, the control unit may be configured to control the autonomous drive unit in such a way that the motor vehicle is moved from the parking position into the energy recovery position and / or is driven from the energy recovery position into the parking position. Preferably, the power generation system comprises a garage device, wherein the parking position is disposed within the garage device and / or the energy recovery position is located outside the garage device.

An idea on which the invention is based is that motor vehicles are not moved most of the day and thus are unused. With the invention, this dead time should be made useful. For this purpose, the motor vehicle is converted into a kind of small decentralized power station unit. Thus, the energy obtained from the motor vehicle can be fed into a conventional power grid, for example, during a high consumption (usually between 18 o'clock and 20 o'clock). However, it is also conceivable that the energy gained is temporarily stored in order to have it available for load times. The motor vehicle is provided with an energy recovery device, such as solar cells or wind generators. The motor vehicle is in particular a plug-in hybrid vehicle, hybrid vehicle or full electric vehicle, but may also be a conventional (power) vehicle. In particular, the motor vehicle has an autonomous driving unit, for example an advanced automatic parking system. The autonomous driving unit allows an automatic forward / reverse driving of the motor vehicle, for example, to leave a garage. The motor vehicle leaves - controlled by a control unit - the garage just as far as it is required for energy. In this case, the control unit can additionally ensure that the motor vehicle does not leave a predetermined area, for example a parking space or a property. Preferably, the control unit can communicate with the autonomous driving unit and / or various sensors in order to determine whether sensible energy production is even possible. First, an energy storage of the motor vehicle can be charged before other systems are charged or the energy is fed into the power grid. Also, a stationary energy storage may be provided which serves as a buffer and is housed for example in the garage. From the energy storage / energy storage can then be retrieved, for example, from an electricity supplier, the stored energy and fed into the grid, for example, cushion demand peaks or nearby houses to supply. In addition, such an autonomous system can supply the electricity providers with information, in real time, about the current energy consumption. Thus, a corresponding regulation of conventional centralized power plants can be made possible. The vehicle customer can thus at least partially meet its own energy needs.

Preferably, the energy harvesting system comprises a weather sensor device which is designed to detect weather data, in particular wind speed and / or illuminance, wherein preferably the control unit is designed to convert the motor vehicle from the parking position into the energy recovery position or vice versa based on the weather data. The weather sensor device, for example a weather station, can measure relevant weather data for the generation of energy; for solar energy about the illuminance or for wind energy the wind speed. For example, based on the weather data, the control unit determines whether there is sufficient wind and / or sun for energy production and can control the autonomous drive unit such that the motor vehicle is transferred from the parking position into the energy recovery position, for example when a predefined first threshold value is reached or exceeded , In particular, the control unit can control the autonomous drive unit in such a way that the motor vehicle is transferred from the power generation position to the parking position, for example if it falls below a second threshold value, which can be equal to or lower than the first threshold value. In addition, it may be necessary for the first threshold to have been reached or exceeded for a given time interval. Furthermore, it may be necessary for the second threshold value to have been reached or fallen below for a predetermined time interval. In this case, the second threshold value for the identical variable as the first threshold value can be predetermined, that is, for example, both threshold values for the illuminance. However, the second threshold value can also be related to a different size, for example the energy currently obtained by the energy-generating device.

It is preferred that the motor vehicle comprises a sensor device which is designed to detect an environment of the motor vehicle in order to obtain environmental data, wherein in particular the control unit drives the autonomous drive unit based on the environmental data. The motor vehicle can perceive its surroundings by means of the sensor device in order to drive forward or backward more reliably. The typical environment of the motor vehicle can be recorded and stored, for example, during a Einlernfahrt. The sensor device may comprise a forward camera, a reversing camera, a tare-angle camera, an ultrasound sensor device and / or radar sensor device. For example, the Forward camera, the ultrasonic sensor device and / or the radar sensor device are used in forward driving. Furthermore, a LIDAR device can be provided to significantly improve the autonomous driving accuracy.

It is preferred that the energy-generating device comprises at least one solar cell, in particular organic solar cell, and / or at least one wind generator. It is preferred that the solar cell between a normal position in which the window of the motor vehicle is free, and a power generation position in which the window of the motor vehicle is shaded by the solar cell, is movable. It is preferred that the energy recovery device is disposed within the motor vehicle and is preferably designed as a sun protection device. The solar cells are preferably based on organic solar cell technology. In particular, organic solar cells allow a wide range of applications in terms of shaping and flexibility; Furthermore, the efficiency can be further increased and at the same time the effort is kept low. The solar cells are preferably designed so that at the same time a use as conventional sunscreen is possible. For example, the solar cells can be rolled out to shade a window surface. Thus, an effective sunscreen with environmentally friendly and efficient energy production is possible.

Preferably, the energy recovery system comprises an energy distribution device, which is designed to store the electrical energy obtained by the energy recovery device and / or to feed it into a power grid. It is preferred that the energy distribution device comprises an energy storage device that is designed to store electrical energy from the energy recovery device, the energy storage device in particular comprising a stationary energy storage and / or provided on the motor vehicle mobile energy storage. It is preferred that the energy distribution device comprises a connection device in order, for example, to connect the motor vehicle to the energy storage device, in particular to the stationary energy store, so that it can be fed into the power network. The energy store, in particular the stationary energy store, is preferably provided in the vicinity of the parking position. For example, the energy storage is housed in the garage equipment. The energy storage device can have a capacity of several kWh, for example 1 kWh to 2 kWh, per motor vehicle or energy generating device. The voltage of the energy store is preferably adapted to the energy recovery device to allow lossless energy transfer as possible. For example, can be provided as a connection device, an automatic cable drum device, depending on the position of the motor vehicle, a connection cable or unrolls.

It is preferred that the motor vehicle comprises a position determining device which is designed to determine position data, wherein in particular the control unit is designed to control the autonomous driving unit based on the position data preferably such that the motor vehicle always remains within a predetermined range. Preferably, the position determining device ensures, for example by a geofence, that the motor vehicle does not leave a predetermined area, such as a garage, parking space, site or the like. Furthermore, a movement path can be predetermined on which the motor vehicle moves autonomously from the parking position into the energy recovery position or vice versa. For different directions of movement also different movement paths can be specified.

Further, the invention provides a motor vehicle, in particular hybrid vehicle or electric vehicle, for a preferred power generation system, wherein the motor vehicle, a power generating device, which is adapted to recover electrical energy from wind and / or sun, and a control unit, which is formed, a moving the energy recovery device from a first state, in which a gain of electrical energy by the energy recovery device is not enabled, in a second state, in which a gain of electrical energy by the energy recovery device is enabled, and / or moving the energy recovery device of the second state in the to cause the first state. Preferably, the motor vehicle comprises an energy storage device, which is designed to store electrical energy from the energy recovery device. In particular, the motor vehicle may comprise an autonomous driving unit, by means of which the motor vehicle is movable between a parking position in which energy is generated and a power generation position in which energy is obtained by means of the energy-generating device. The parking position is an example of the first state, and the power generation position is an example of the second state. It is preferred that the control unit is designed to control the autonomous drive unit in such a way that the motor vehicle is moved from the parking position into the energy recovery position if it is determined that sufficient wind and / or sun is present and / or from the energy recovery position into the energy recovery position Park position is driven, if it is determined that wind and / or sun are not sufficient.

In addition, the invention provides an energy harvesting method for obtaining electrical energy from wind and / or sun by means of a motor vehicle, in particular according to one of the preceding claims, comprising an energy generating device, which is designed for obtaining electrical energy from wind and / or sun, wherein the Energy harvesting method comprises the step of a control unit causing the energy harvesting device is moved from a first state in which a gain of electrical energy by the energy recovery device is not possible, in a second state in which a gain of electrical energy is enabled by the energy recovery device and / or that the energy recovery device is moved from the second state to the first state.

The invention also includes further developments of the devices or methods according to the invention which have features as have already been described in connection with the developments of the energy recovery system according to the invention. For this reason, the corresponding developments of the devices or methods according to the invention are not described here again.

With the motor vehicle according to the invention and the energy recovery method according to the invention, similar advantages as those already described can be realized in each case.

• 1 schematisch ein Ausführungsbeispiel eines Energiegewinnungssystems; und
• 2 schematisch ein Ausführungsbeispiel eines Energiegewinnungsverfahrens;

In the following, embodiments of the invention are described. This shows:

• 1 schematically an embodiment of an energy recovery system; and
• 2 schematically an embodiment of an energy recovery method;

It will be below 1 Referenced an energy recovery system 10 represents. The energy recovery system 10 is designed to generate electrical energy from wind and / or sun.

The energy recovery system 10 includes a motor vehicle 12 that is an energy recovery facility 14 having. The energy recovery device 14 in the present case comprises a plurality of solar cells 16 on windows 18 of the motor vehicle 12 are arranged. The solar cells 16 can be between a normal position in which the windows 18 are free, and a power generation position in which the windows 18 through the solar cells 16 be shaded, moved.

Furthermore, the motor vehicle 12 an autonomous driving unit 20 on. The autonomous driving unit 20 For example, by an advanced automatic parking system 22 be formed. The autonomous driving unit 20 is formed, the motor vehicle 12 between a parking position 24 and a power generation position 26 to move. The movement preferably takes place between the parking position 24 and the power generation position 26 by driving forwards or backwards.

The car 12 may be a sensor device 28 with a plurality of sensors 30 have, for example, a forward camera 32 and a backward camera 34 , Other sensors may be provided. The sensor device 28 captures environmental data to the motor vehicle 12 to control.

The energy recovery system 10 further comprises a control unit 36 , The control unit 36 is outside the vehicle, for example 12 and stationary. The control unit 36 but also on the motor vehicle 12 be provided. The control unit 36 may also include a plurality of components located at a plurality of locations outside and / or inside the motor vehicle 12 can be arranged.

Furthermore, the energy recovery system includes 10 an energy distribution device 38 that is designed to receive electrical energy from the energy recovery device 14 was generated to store and / or in a power grid 40 feed.

The energy distribution device 38 includes, for example, a connection device 42 that the motor vehicle 12 with the power grid 40 connects electrically. The energy distribution device 38 can be a stationary energy storage 44 and / or a mobile energy storage 46 include. The stationary energy storage 44 is to the connection device 42 , for example by means of a cable device 48 , connected. The cable device 48 may depend on the position of the motor vehicle 12 a cable 50 roll in or out. The mobile energy storage 46 is on the motor vehicle 12 intended.

Furthermore, the energy recovery system includes 10 a weather sensor device 52 for collecting weather data. The weather sensor device 52 preferably has a weather station 54 on, about at a building 56 or a garage device 58 can be arranged. The weather sensor device 52 For example, it is wireless with the control unit 36 operatively connected. The weather station 54 may also be at another location, for example near the stationary energy store 44 be arranged.

The car 12 can also have a position determination device 60 have to position data of the motor vehicle 12 to investigate.

Hereinafter, an embodiment of a power generation method based on 1 and 2 explained in more detail.

In an initial step S0 is the motor vehicle 12 in the parking position 24 and the energy recovery device 14 , more precisely the solar cells 16 in the normal position.

In a weather detection step S1 are determined by the weather sensor device 52 Weather data, such as the illuminance detected. The control unit 36 evaluates the weather data and compares them, for example, with a predetermined threshold. If the threshold is exceeded, the control unit controls 36 the autonomous driving unit 20 and optionally the garage device 58 at.

In one step S2 will - if necessary - the garage device 58 opened and the autonomous driving unit 20 controlled such that the motor vehicle 12 backwards out of the garage device 58 moves out. During driving, the environmental data of the sensor device 28 running by autonomous driving unit 20 or the control unit 36 evaluated, for example, to stop when people are in the driveway. Furthermore, the position data of the position determination device 60 used to ensure that the motor vehicle 12 a predetermined range 62 like a parking space 64 or a plot 66 does not leave. The control unit 36 controls the autonomous driving unit 20 corresponding. The car 12 is as long as by the autonomous driving unit 20 along a given path of movement 68 moves until the motor vehicle 12 in the power generation position 26 outside the garage device 58 located.

In an energy recovery step S3 controls the control unit 36 the energy recovery device 14 on and rolls the solar cells 16 for generating electrical energy in the power generation position. The generated electrical energy is first in the mobile energy storage 46 saved. When the mobile energy storage 46 is full, the electrical energy by means of the connection device 42 for charging the stationary energy storage 44 or for feeding into the power grid 40 forwarded. During the energy recovery step S3 In addition, the weather data are evaluated at least periodically. Detects the control unit 36 in that a second threshold value, which lies below the first threshold value, is reached or undershot, the energy recovery step becomes S3 completed. It is also conceivable that the energy recovery step S3 is ended on a user input.

In a parking step S4 controls the control unit 36 the energy recovery device 14 on and drives the solar cells 16 back to normal position. Further, the control unit controls 36 the autonomous driving unit 20 such that the motor vehicle 12 forward along the motion path 68 in the garage device 58 into the parking position 24 moves. The control unit 36 can be designed so that the energy recovery device 14 , the autonomous driving unit 20 and / or the garage device 58 be controlled, the parking step S4 perform when a second threshold is reached or exceeded, which is different, in particular less than or equal to the threshold.

The garage device 58 is optional, so that in place of moving the motor vehicle 12 from the garage device 58 out, a rolling out of the solar cells 16 for generating electrical energy in the power generation position can occur. In other words, in this variant of the method according to the invention, the motor vehicle 12 not moved, but only the energy recovery device 14 by, for example, the solar cells 16 be rolled out.

It should be noted that the steps or sub-steps need not necessarily be performed in the order described. Accordingly, every technically meaningful sequence of process steps is part of the invention. In particular, steps may also be performed concurrently, which have been described herein as sequential and vice versa.

The measures described above will further increase the environmental friendliness of individual mobility. A distributed grid of energy recovery systems can increase the reliability and efficiency of the overall energy supply. In addition, implementation is to be carried out with little fundamentally established additional equipment and therefore with little effort.

It should be noted that the power generation system 10 in the present case only using a single motor vehicle 12 has been described; however, the power generation system can 10 be scaled to use a plurality of motor vehicles. Depending on requirements and practicability, a plurality of devices, for example a plurality of connection devices, energy storage devices and the like, or a device designed for a plurality of motor vehicles, for example a Energy storage device with larger capacity, be provided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012006836 A1 [0002]
• DE 102011079242 A1 [0003]
• DE 102010015758 A1 [0004]

Claims (12)

An energy recovery system (10) for recovering electrical energy from wind and / or sun, characterized in that the energy recovery system (10) comprises: - a motor vehicle (12) including energy harvesting means (14) for extracting electrical energy from wind and / or sun is trained; and - a control unit (36) configured to move the energy recovery device (14) from a first state (24), in which a gain of electrical energy by the energy recovery device (14) is not possible, into a second state (26) in which a gain of electrical energy by the energy recovery device (14) is enabled, and / or cause a movement of the energy recovery device (14) from the second state (26) in the first state (24). Energy recovery system (10) according to any one of the preceding claims, characterized in that the motor vehicle (12) further comprises an autonomous driving unit (20), wherein the motor vehicle (12) by means of the autonomous driving unit (20) between a parking position (24), in which a power generation is prevented, and a power generation position (26) in which energy is obtained by means of the energy recovery device (14) is movable, wherein the control unit (36) is adapted to control the autonomous driving unit (20) such that the motor vehicle (12) is moved from the parking position (24) in the energy recovery position (26) and / or driven from the energy recovery position (26) in the parking position (24). An energy harvesting system (10) according to any one of the preceding claims, characterized by a garage device (58), wherein the parking position (24) is located within the garage device (58) and / or the energy harvesting position (26) is located outside the garage device (58). Power generation system (10) according to one of the preceding claims, characterized by a weather sensor device (52) which is designed to detect weather data, in particular wind speed and / or illuminance, wherein the control unit (36) is designed based on the weather data, the autonomous driving unit (36). 20) in such a way that the motor vehicle (12) is transferred from the parking position (24) into the energy recovery position (26) or vice versa. Energy recovery system (10) according to any one of the preceding claims, characterized in that the motor vehicle (12) comprises a sensor device (28) which is adapted to detect an environment of the motor vehicle (12) in order to obtain environmental data, wherein the control unit (36 ) drives the autonomous drive unit (20) based on the environment data. Energy recovery system (10) according to any one of the preceding claims, characterized in that the energy recovery device (14) comprises at least one solar cell (16), in particular organic solar cell, and / or at least one wind generator. Energy recovery system (10) according to any one of the preceding claims, characterized in that the energy recovery device (14) within the motor vehicle (12) is arranged and is preferably designed as a sun protection device. Energy recovery system (10) according to any one of the preceding claims, characterized by an energy distribution device (38) which is designed to store the electrical energy obtained by means of the energy recovery device (14) and / or in a power grid (40). Energy recovery system (10) after Claim 8 , characterized in that the energy distribution device (38) comprises an energy storage device (44, 46), which is designed to store electrical energy from the energy recovery device (14), wherein the energy storage device (44, 46) in particular a stationary energy storage (44) and / or on the motor vehicle (12) provided mobile energy storage (46). Energy recovery system (10) according to any one of the preceding claims, characterized in that the motor vehicle (12) comprises a position determining means (60) which is adapted to determine position data, wherein the control unit (36) is formed, the autonomous driving unit (20) based on to control the position data such that the motor vehicle (12) always remains within a predetermined range (62). A motor vehicle (12), in particular a hybrid vehicle or electric vehicle, for an energy recovery system (10), the motor vehicle (12) comprising: - an energy recovery device (14) designed to generate electrical energy from wind and / or sun; and a control unit (36) configured to move the energy harvesting device (14) from a first state (24) in which electrical energy is gained by the device Energy recovery device (14) is not in a second state (26), in which a gain of electrical energy by the energy recovery device (14) is enabled, and / or moving the energy recovery device (14) from the second state (26) in the to cause the first state (24). An energy harvesting process for obtaining electrical energy from wind and / or sun by means of a motor vehicle (12) comprising energy harvesting means (14) adapted to extract electrical energy from wind and / or sun, the energy harvesting process comprising the step of a control unit (36) causes the energy recovery device (14) from a first state (24), in which a gain of electrical energy by the energy recovery device (14) is not possible, in a second state (26), in which a gain electrical Energy by the energy recovery device (14) is allowed to move and / or that the energy recovery device (14) from the second state (26) in the first state (24) is moved.

Images