DE102011115250A1 - Induction charging device for wireless horizontal loading and / or unloading of an electrical motor vehicle battery - Google Patents

Abstract

The invention relates to an induction charging device for wireless horizontal charging and / or discharging of an electrical motor vehicle accumulator (12) with an inductive energy transmission and / or energy receiving unit (13) and a charge overlay setting unit (32) designed differently from a chassis of a motor vehicle (22). at least provided for movably supporting the energy transmitting and / or receiving unit (13) for setting a charge overlap. It is proposed that the charge coverage setting unit (32) for adjusting the charge coverage stores the energy transmission and / or energy reception unit (13) movably in at least one spatial direction (14) which has at least one horizontal component.

Description

The invention relates to an induction charging device according to the preamble of claim 1.

From the DE 10 2009 023 409 A1 is already an induction charging device for wireless horizontal charging of an electrical motor vehicle battery, with an inductive energy end unit and a different design of a chassis of a motor Ladebedeckungseinstelleinheit, which is intended to store the energy end unit to adjust a charge coverage, known.

The invention is in particular the object of simplifying the setting of the charge coverage. This object is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.

The invention is based on an induction charging device for wireless horizontal charging and / or discharging of an electrical motor vehicle accumulator, comprising an inductive energy transmission and / or energy receiving unit and a charge overlay setting unit designed differently from a chassis of a motor vehicle. or energy receiving unit to store a setting of a charge coverage movable.

It is proposed that the charge overlap setting unit for adjusting the charge overlap movably supports the energy transmission and / or energy receiving unit in at least one spatial direction which has at least one horizontal component. As a result, the energy-transmitting and / or energy-receiving unit can be brought to charge coverage particularly quickly and reliably, whereby an efficiency of the wireless horizontal charging and / or discharging of the motor vehicle accumulator can be adjusted particularly advantageously to an optimum. As a result, the setting of the charge coverage can be simplified, whereby customer satisfaction can be increased. An induction charging device should in particular be understood to mean a device which uses a principle of an inductive energy transmission for the wireless horizontal charging and / or discharging of the motor vehicle accumulator. Advantageously, two induction charging devices are necessary for horizontal loading and / or unloading, wherein one induction charging device is electrically connected to a public electricity network and the other induction charging device is electrically connected to the motor vehicle accumulator. The induction charging device connected to the public power grid is preferably designed as a stationary, ie stationary induction charging device and the induction charging device connected to the motor vehicle accumulator as a mobile, ie vehicle-side induction charging device. Preferably, the induction charging device comprises an inductive energy transmission unit, which is intended to be connected to the horizontal charging and / or discharging wirelessly with an externally disposed inductive energy receiving unit to transmit energy, and / or an inductive energy receiving unit, which is provided now horizontal load and / or -Discharge wirelessly to be connected to an externally arranged, inductive energy transmission unit to transmit energy. An "externally arranged energy transmission and / or energy reception unit" should be understood in particular to mean an energy transmission and / or energy reception unit which is associated with another induction charging device with regard to the induction charging device considered. An "induction" is to be understood in particular as an electromagnetic induction. A "horizontal loading" should in particular be understood to mean a charging process in which the energy-transmitting and / or energy-receiving unit and the externally arranged energy-transmitting and / or energy-receiving unit are arranged horizontally relative to one another. A "horizontal discharge" is to be understood in particular as a discharging process in which the energy-transmitting and / or energy-receiving unit and the externally arranged energy-transmitting and / or energy-receiving unit are arranged horizontally relative to one another. By "horizontal to each other" should be understood in particular that the energy end and / or energy receiving unit and the externally arranged energy end and / or energy receiving unit are arranged in the horizontal direction next to each other and / or adjacent to each other. Advantageously, the horizontal loading and / or unloading is designed as a front loading and / or unloading. A "front loading" should in particular be understood to mean a horizontal load, wherein the energy end and / or energy receiving unit is arranged in a front of a motor vehicle. A "front discharge" is to be understood in particular to mean a horizontal discharge, wherein the energy end and / or energy receiving unit is arranged in a front of a motor vehicle. An "inductive energy transmission unit" is to be understood in particular as meaning a unit which is intended to generate a magnetic alternating field for electromagnetic energy transmission. An "inductive energy receiving unit" is to be understood in particular as meaning a unit which is intended to receive the electromagnetic alternating field generated by the energy-emitting unit for electromagnetic energy transmission and to convert it into electrical current. Advantageously, the energy-emitting unit and the energy-receiving unit each have at least one coil, each having a coil surface. Preferably the Kraftfahrzeugakkumulator formed as a Traktionsakkumulator, which is intended to provide an electric drive of the motor vehicle for providing a drive power with electrical energy.

A "charge coverage adjustment unit" should be understood to mean, in particular, a unit which is provided for movably supporting the energy transmission and / or energy reception unit perpendicular to a main magnetic field direction of the energy transmission and / or energy reception unit. Preferably, by means of the Ladeüberdeckungseinstelleinheit the energy end and / or energy receiving unit can be moved perpendicular to the main magnetic field direction automatically and / or manually, in particular to set an efficiency of horizontal loading and / or unloading to a maximum. A "main magnetic field direction" should be understood in particular to mean a direction which is arranged parallel to a direction of a magnetic field in a point of the strongest magnetic field. A "coil surface" is to be understood in particular a surface which is surrounded by a winding of the coil, wherein the surface is preferably surrounded in a projection direction which passes through all windings, of the winding of the coil. Preferably, the projection direction is arranged parallel to the main magnetic field direction. Advantageously, the Ladeüberdeckungseinstelleinheit is provided to change a position of the energy end and / or energy receiving unit relative to the externally disposed energy end and / or energy receiving unit, preferably to set the maximum efficiency of horizontal loading and / or unloading, with a vertical distance between the energy transmitting and / or receiving unit and the externally located energy transmitting and / or receiving unit is independent of the change in position, i. h., That the vertical distance remains constant despite a change in position. Preferably, the Ladeüberdeckungseinstelleinheit changes the position of the energy end and / or power receiving unit relative to the externally located energy end and / or power receiving unit without the vertical distance between the energy end and / or power receiving unit and the externally arranged energy end and / or power receiving unit to change. A "vertical distance" is to be understood in particular as meaning a horizontal distance, preferably during the charging process, between the energy transmission and / or energy reception unit and the externally arranged energy transmission and / or energy reception unit which is perpendicular to the energy transmission and / or energy reception unit and / or or is arranged perpendicular to the externally arranged energy end and / or energy receiving unit, wherein the distance is arranged parallel to the magnetic field main direction. Advantageously, the vertical distance is arranged perpendicular to the coil surface of the energy end and / or energy receiving unit and / or perpendicular to the coil surface of the externally arranged energy end and / or energy receiving unit, wherein the coil surfaces are preferably arranged parallel to each other. The vertical distance is advantageously changed by moving away from each other and / or moving away from one another the energy transmission and / or energy reception unit and the externally arranged energy transmission and / or energy reception unit, the charge coverage preferably remaining constant. Preferably, the vertical distance is arranged parallel to the main magnetic field direction. A "charge coverage adjustment unit designed differently from a chassis of a motor vehicle" is to be understood in particular as a charge coverage adjustment unit provided with an induction charging device arranged in the motor vehicle, at least for the energy transmission and / or energy receiving unit relative to the chassis of the motor vehicle and stationary arranged induction charging device, the energy end and / or power receiving unit to store relative to a fixed housing movable. For mobile storage, the Ladeüberdeckungseinstelleinheit preferably guide elements, such as guide rails, on.

A "charge coverage" is to be understood as meaning, in particular, an arrangement of the energy transmission and / or energy reception unit which is aligned, preferably with respect to the magnetic field main direction, relative to the externally arranged energy transmission and / or energy reception unit. An "aligned arrangement" of the energy transmission and / or energy reception unit relative to the externally arranged energy transmission and / or energy reception unit should be understood in particular to mean that in the case of a perpendicular projection of the coil surfaces of the energy transmission and / or energy reception unit and the externally arranged energy transmission and / or energy receiving unit on a the coil surface of the energy end and / or energy receiving unit-containing plane the centroids of the projections of the coil surfaces come to cover. The charge overlap is preferably designed as a measure of a usable surface for the electromagnetic energy transfer. In order to change the charge overlap, the energy-transmitting and / or energy-receiving unit is merely moved parallel to its coil surface. The energy end and / or energy receiving unit is advantageously moved only perpendicular to the main magnetic field direction to change the charge coverage. Advantageously, the efficiency of the horizontal loading and / or unloading is dependent on the charge coverage. Preferably the efficiency of horizontal loading and / or unloading increases with increasing charge coverage. The charge overlap is advantageously designed as a horizontal charge overlap. Preferably, when the charge coverage is changed, the vertical distance between the energy transmission and / or energy reception unit and the external energy transmission and / or energy reception unit remains unchanged. The spatial direction, which has at least one horizontal component and in which the energy end and / or energy receiving unit is movably mounted, is preferably arranged in a plane perpendicular to the vertical distance between the energy end and / or energy receiving unit and the external energy end and / or energy receiving unit, in particular in the charging process, is arranged. The plane is advantageously arranged parallel to the external energy end and / or energy receiving unit. A "spatial direction that has at least one horizontal component" should be understood to mean, in particular, a spatial direction that is arranged at least substantially horizontally. By "substantially" is meant in particular a deviation which is less than 20 °, advantageously less than 10 ° and particularly advantageously less than 5 °. "Provided" is to be understood in particular specially programmed, designed, equipped and / or arranged.

It is further proposed that the spatial direction, which has at least one horizontal component, is arranged at least substantially perpendicular to a motor vehicle travel direction. As a result, the setting of the charge coverage can be further simplified. A "motor vehicle travel direction" is to be understood in particular as meaning a direction in which the motor vehicle would move or move in the absence of a steering angle. The motor vehicle travel direction is preferably designed as a direction in which the motor vehicle moves or moves for horizontal loading and / or unloading and / or for producing the energy-transmitting connection between the energy transmission and / or energy reception unit and the external energy transmission and / or energy reception unit would. For adjusting and / or changing the vertical distance between the energy end and / or energy receiving unit and the external energy end and / or energy receiving unit, the motor vehicle is preferably moved in the direction of travel of the motor vehicle. Advantageously, the motor vehicle travel direction is arranged parallel to a motor vehicle longitudinal axis. It is advantageously arranged horizontally. Advantageously, the motor vehicle travel direction is arranged at least substantially parallel to the main magnetic field direction.

It is also proposed that the charge coverage adjustment unit for adjusting the charge coverage stores the energy transmission and / or energy reception unit in at least one spatial direction, which has at least one vertical component. Thereby, the energy end and / or energy receiving unit can be adjusted in height, whereby the setting of the charge coverage can be optimized. The spatial direction, which has at least one vertical component and in which the energy end and / or energy receiving unit is movably mounted, is preferably arranged in the plane perpendicular to the vertical distance between the energy end and / or energy receiving unit and the external energy end and / or energy receiving unit, in particular in the charging process, is arranged. Advantageously, the spatial direction, which has at least one vertical component, and the spatial direction, which has at least one horizontal component, in which the energy end and / or energy receiving unit is movably mounted for loading coverage, arranged in the same plane. A spatial direction which has at least one vertical component is to be understood as meaning, in particular, a spatial direction which is arranged at least substantially vertically.

Particularly preferably, the energy end and / or energy receiving unit in a direction parallel to the motor vehicle travel direction arranged spatial direction, which has at least one horizontal component, movably mounted, whereby the vertical distance between the energy end and / or energy receiving unit and the external energy end and / or energy receiving unit , in particular during the charging process, can be adjusted. Advantageously, the energy-transmitting and / or energy-receiving unit for absorbing an impact energy is movably mounted in the spatial direction arranged parallel to the motor vehicle travel direction and having at least one horizontal component. Preferably, the spatial direction, which is arranged parallel to the motor vehicle traveling direction and has at least one horizontal component, perpendicular to the spatial direction, which is arranged perpendicular to the motor vehicle travel direction and has at least one horizontal component, and perpendicular to the spatial direction, which has at least one vertical component arranged. Advantageously, the energy end and / or energy receiving unit is movably mounted in all three spatial directions.

In a further embodiment of the invention, the Ladeüberdeckungseinstelleinheit a motor unit, which is intended to actively to move the charge coverage to move the energy end and / or energy receiving unit. This can be an automatic Setting the charge coverage preferably be realized to an optimum. Preferably, the motor unit is provided for active adjustment of the charge coverage, the energy end and / or energy receiving unit in the spatial direction, which is arranged perpendicular to the motor vehicle travel direction and has at least one horizontal component, and in the spatial direction, which has at least one vertical component active to move.

In particular, it is advantageous if the motor unit is intended to post-reposition the energy-transmitting and / or energy-receiving unit at least in one charging process. As a result, the charge coverage can be adapted to changes during the charging process, whereby an optimal charge coverage over the entire charging process can be ensured. Preferably, repositioning and thus adaptation of the loading overlap is carried out automatically, by means of a control and / or regulating unit, or manually by an operator.

Furthermore, it is advantageous if the induction charging device has a fixed housing and a housing which is movably connected to the fixed housing and in which the energy-transmitting and / or power-receiving unit is at least partially arranged. As a result, a particularly advantageous induction charging device can be provided. A "housing movably connected to the fixed housing" is to be understood in particular a housing which is movably arranged on the fixed housing, wherein it is arranged during the charging process along the horizontal direction between the fixed housing and the external energy end and / or energy receiving unit is.

Furthermore, it is advantageous if the pre-housing is designed to be closed for the complete and permanent enclosure of the energy-end and / or energy-receiving unit. As a result, the energy transmission and / or energy reception unit can be protected against vandalism in a particularly simple manner. Preferably, the energy transmitting and / or receiving unit is wholly and permanently disposed within the pre-housing. By "permanent" is to be understood in particular that the pre-housing an opening and / or a cover is missing, which is intended to be opened in or for the charging process. Advantageously, the front housing is closed before, during and after the charging process. Preferably, the pre-housing is formed of a material that is electrically nonconductive and / or magnetically neutral ie non-magnetic. The pre-housing is advantageously formed of a material having a magnetic permeability μ _r of 1 or nearly 1. By "nearly" is to be understood advantageously +/- 0.1.

It is further proposed that the energy transmission and / or energy receiving unit are fixedly connected to the front housing and the front housing in terms of drive technology with the motor unit. As a result, the energy transmission and / or energy reception unit can be moved particularly advantageously in at least one spatial direction. Preferably, the energy transmitting and / or receiving unit is moved by moving the front housing. Advantageously, the Ladeüberdeckungseinstelleinheit stores the front housing for adjusting the Ladeüberdeckung in at least the spatial direction, which is arranged at least substantially perpendicular to the vehicle travel direction and at least one horizontal component, movable. Particularly advantageously, the Ladeüberdeckungseinstelleinheit stores the front housing for adjusting the charge coverage in addition in at least the spatial direction, which is arranged at least substantially perpendicular to the motor vehicle travel direction and at least one vertical component, movable. Particularly advantageously, the front housing, in particular for absorbing the impact energy, additionally movably mounted in at least the spatial direction, which is arranged at least substantially parallel to the motor vehicle travel direction and has at least one horizontal component. The pre-housing is preferably movably mounted in all three spatial directions. The motor unit is advantageously provided for actively moving the charge cover to actively move the front housing. Preferably, the motor unit for active adjustment of the charge coverage is provided to actively move the pre-housing in the spatial direction, which is perpendicular to the vehicle travel direction and has at least one horizontal component, and in the spatial direction, which has at least one vertical component.

It is also proposed that the induction charging device has a stationary arrangement. As a result, a particularly advantageous induction charging device can be realized. An "induction charging device having a stationary arrangement" should be understood in particular to mean a stationary induction charging device. Preferably, the other induction charging device having the external power transmitting and / or power receiving unit is mobile. The other induction charging device having the external power transmission and / or power receiving unit is advantageously integrated in the motor vehicle.

In addition, an induction charging system with a motor vehicle device, which has at least one electrical motor vehicle accumulator, and with an induction charging device according to the invention, for the wireless horizontal loading and / or unloading of the at least one Kraftfahrzeugakkumulators is provided proposed. As a result, a particularly advantageous induction charging system can be provided, in which the charge coverage can be adjusted to an optimum without an expensive positioning of the motor vehicle device having motor vehicle to an optimum. The motor vehicle device preferably has an electric drive unit having at least the motor vehicle accumulator. An "electric drive unit" is to be understood, in particular, as a drive unit which has an electric drive for providing the electrical drive power. An "electric drive" is to be understood in particular as a motor vehicle drive with at least one electric motor. A "drive power" is to be understood in particular a power which is intended to drive the motor vehicle and thus driving wheels of the motor vehicle. The motor vehicle with the electric drive unit is preferably designed as an electric motor vehicle or as a hybrid motor vehicle.

Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

The 1 shows schematically an induction charging system for wireless power transmission between two electromagnetic induction charging devices 10 . 11 , The induction charging devices 10 . 11 transfer energy according to a transformer principle. The energy transfer is horizontal. It takes place in a horizontal direction 21 , The induction charging system has a motor vehicle 22 on. The car 22 is designed as an electric motor vehicle. It is designed as a passenger vehicle.

The car 22 has a motor vehicle device 20 with an electric drive unit. The electric drive unit has an electric drive and an electrical Kraftfahrzeugakkumulator 12 , which is intended to provide the electric drive with electric current to provide an electric drive power on. For electrical charging of the motor vehicle battery 12 includes the motor vehicle device 20 a vehicle-side loader 23 that electrically with the induction charger 11 and the motor vehicle accumulator 12 connected is. The loader 23 is fixed in the motor vehicle 22 integrated. He is trained as an on-board loader. The automobile accumulator 12 is designed as a high-voltage battery.

For wireless horizontal charging of the motor vehicle battery 12 has the motor vehicle device 20 the induction charger 11 on. The induction charger 11 is formed as an on-vehicle induction charging device. It is fixed in the motor vehicle 22 integrated. The induction charger 11 is designed as a mobile induction charging device. For wireless front loading of the motor vehicle battery 12 is the induction charger 11 in a front 24 of the motor vehicle 22 arranged. The induction charger 11 is inside a body shell of the motor vehicle 22 arranged.

For power transmitting connection with the induction charging device 10 has the induction charging device 11 an energy receiving unit 25 on. The energy receiving unit 25 is arranged at the front. The energy receiving unit 25 is along the horizontal direction 21 behind a front license plate 26 of the motor vehicle 22 arranged. It is at the front bumper of the motor vehicle 22 attached. The license plate 26 is at the power reception unit 25 attached. It is on a housing of the power receiving unit 25 attached. The energy receiving unit 25 has a coil 27 and a spool not shown. The sink 27 the energy receiving unit 25 is designed as a secondary coil. The license plate 26 is made of plastic.

For wireless horizontal charging of the motor vehicle battery 12 The induction charging system has the induction charging device 10 on. The induction charger 10 has a stationary arrangement. It is arranged stationary and thus formed stationary. The induction charger 10 is formed as an on-vehicle induction charging device. The induction charger 10 is in a parking lot of the motor vehicle 22 arranged. For power transmitting connection with the induction charging device 11 of the motor vehicle 22 has the induction charging device 10 an energy transmission unit 13 on. The energy transmission unit 13 has a coil 28 and a spool not shown. The sink 28 is formed as a primary coil. When looking at the induction charging device 10 is the induction charger 11 for the induction charging device 10 as another induction charging device, whereby the power receiving unit 25 for the induction charging device 10 is formed as an external power receiving unit. In principle, the stationary induction charging device 10 In addition, a power receiving unit for the stationary induction charging device 10 is designed as an internal power receiving unit, and the mobile induction charging device 11 In addition, an energy transmission unit, which is used for the stationary induction charging device 10 as an external Energy End Unit is formed, having, whereby the Kraftfahrzeugakkumulator 12 can be unloaded wirelessly and the induction charging devices 10 . 11 thus also for wireless horizontal unloading of the motor vehicle battery 12 are provided.

To set a horizontal charge coverage of the power transmission unit 13 with the energy receiving unit 25 and thus for setting an optimal loading position of the energy transmission unit 13 with respect to the power receiving unit 25 has the induction charging device 10 one of a chassis of the motor vehicle 22 differently formed Ladeüberdeckungseinstelleinheit 32 on. To set the charge overlap, the charge cover adjusting unit supports 32 the energy transmission unit 13 movable. The energy transmission unit 13 the induction charger 10 is arranged movably. For optimal adjustment of the charge coverage and thus for optimal adjustment of the charging position of the energy transmission unit 13 to the power receiving unit 25 stores the charge coverage adjustment unit 32 the energy transmission unit 13 movable in a horizontal spatial direction 14 and in a vertical spatial direction 16 , The energy transmission unit 13 is for setting the charge coverage in the horizontal direction 14 perpendicular to a motor vehicle travel direction 15 of the motor vehicle 22 is arranged, and in the vertical spatial direction 16 perpendicular to the direction of travel of the motor vehicle 15 is arranged, movably mounted. The spatial direction 14 and the spatial direction 16 are in a charging process in which the energy transmission unit 13 and the energy receiving unit 25 are connected to one another in an energy-transmitting manner, perpendicular to the direction of travel of the motor vehicle 15 arranged. The spatial direction 14 and the spatial direction 16 are each arranged perpendicular to a magnetic field main direction. The motor vehicle travel direction 15 is parallel to a motor vehicle longitudinal axis of the motor vehicle 22 arranged. The motor vehicle travel direction is the direction in which the motor vehicle 22 to position yourself for charging, just before the induction charging device 10 emotional. By "short" is intended in particular 3 meters, preferably 5 meters and most advantageously 10 meters in front of the induction charging device 10 be understood. In the charging process, the wireless power transmission from the power transmission unit takes place 13 to the power receiving unit 25 instead, causing the motor vehicle accumulator 12 is loaded.

The spatial directions 14 . 16 into which the energy transmission unit 13 is movably mounted to adjust the charge coverage are arranged perpendicular to each other. The energy transmission unit 13 is to adjust the charge coverage at a height with respect to a floor on which the motor vehicle 22 stands or drives, and in a direction which is perpendicular to the height and in a same plane as the height, adjustable. The spatial directions 14 . 16 are arranged in the same plane. The plane in which the spatial directions 14 . 16 are perpendicular to a power transmission direction between the power transmission unit 13 and the power receiving unit 25 arranged. It is perpendicular to the vehicle travel direction 15 arranged.

To damage the induction charging device 10 and the motor vehicle 22 upon contact between the induction charging device 10 and the motor vehicle 22 , for example, when positioning the motor vehicle 22 for charging, to announce, is the energy end unit 13 in a horizontal spatial direction 29 parallel to the vehicle travel direction 15 is arranged, movably mounted. The energy transmission unit 13 is also in the horizontal spatial direction 29 parallel to the vehicle travel direction 15 is arranged, movably mounted. She is in the direction of space 29 arranged resiliently. The energy transmission unit 13 is thus in all three spatial directions 14 . 16 . 29 movably mounted.

For active adjustment of the charge coverage and thus for motorized adjustment of the charge coverage, the Ladeüberdeckungseinstelleinheit 32 a motor unit 17 on. The engine unit 17 moves the energy transmission unit 13 to set the charge coverage active. It moves the energy transmission unit 13 for active adjustment of the charge coverage in the spatial direction 14 and in the spatial direction 16 , The engine unit 17 is driving technology with the energy end unit 13 connected. The engine unit 17 is electrically formed. It has an electric motor. Basically, the engine unit 17 also be provided to the energy transmission unit 13 in the spatial direction 29 to actively move.

To adjust the charge coverage during charging is the motor unit 17 intended to the energy transmission unit 13 nachzupositionieren. The engine unit 17 positions the energy transmission unit 13 while charging. It positions the energy-emitting unit 13 after, if set before charging the charging position, for example, by a discharge of the motor vehicle 22 changed. The engine unit 17 adjusts the charge coverage during the charging process to the optimal charge coverage, when the position of the motor vehicle 22 while charging changes. For repositioning the energy transmission unit 13 and thus to adjust the charge coverage moves the motor unit 17 the energy transmission unit 13 in the spatial direction 14 and / or in the spatial direction 16 , depending on how the position of the motor vehicle 22 changed during the charging process. For postpositioning moves the motor unit 17 the energy transmission unit 13 independently, ie without manual intervention of an operator.

The induction charger 10 further has a fixed housing 18 and a movable with the fixed housing 18 connected front housing 19 on. The energy transmission unit 13 is relative to the fixed housing 18 in the three spatial directions 14 . 16 . 29 movably mounted. For setting a home position in the spatial direction 29 the energy transmission unit 13 has the induction charging device 10 Not shown return springs on, the effect in the spatial direction 29 between the solid housing 18 and the front housing 19 are arranged. The return springs act horizontally and parallel to the vehicle travel direction 15 , The return springs provide the resilient arrangement of the power transmission unit 13 in the spatial direction 29 ready. The solid housing 18 is designed as a building wall. Basically, the solid housing 18 also formed separately and be firmly connected to the building wall. Of course, the solid housing 18 also as another, the expert appears to be useful, firmly connected to a soil attachment, such as a wall, a garage wall or the like.

The front housing 19 is for the total and permanent enclosure of the Energy Sending Unit 13 closed trained. It is designed to be vandalism-proof execution closed. The closed front housing 19 surrounds the energy transmission unit 13 complete and permanent. The energy transmission unit 13 is completely in the movable, closed executed pre-housing 19 arranged. It is completely in the pre-housing during the entire charging process 19 arranged and surrounded by this. Through the closed front housing 19 is the energy end unit 13 inaccessible to unauthorized persons. The front housing 19 has only one maintenance opening, not shown, which is intended only for authorized persons. The maintenance opening is closed by a closable housing cover. The front housing 19 forms a housing of the energy transmission unit 13 out. The front housing 19 is relative to the fixed housing 18 in the spatial direction 14 , in the spatial direction 16 and in the spatial direction 29 movably mounted. It is movable in the spatial directions 14 . 16 . 29 on the fixed housing 18 stored. The front housing 19 is made of plastic.

The energy transmission unit 13 is fixed to the front housing 19 connected. It is relative to the front housing 19 immovable. The energy transmission unit 13 is firmly inside the front housing 19 with the front housing 19 connected. For active movement of the energy transmission unit 13 is the front housing 19 drive technology with the motor unit 17 connected. Thus, the front housing connects 19 the energy transmission unit 13 drive technology with the motor unit 17 , The energy transmission unit 13 is indirectly via the front housing 19 drive technology with the motor unit 17 connected. The energy transmission unit 13 is over the front housing 19 movably mounted. The movable front housing 19 thus forms the Ladeüberdeckungseinstelleinheit 32 partly off. For active movement of the energy transmission unit 13 and thus active adjustment of the charge coverage moves the motor unit 17 the front housing 19 relative to the fixed housing 18 , The engine unit 17 moves the front housing 19 for active adjustment of the charge coverage in the spatial directions 14 . 16 ,

For controlling and regulating the motor unit 17 has the induction charging device 10 a non-illustrated control unit and a sensor not shown on. The control unit is in the motor unit 17 integrated. The control unit is communicatively connected to the sensor. The sensor system comprises a plurality of sensors on the vehicle side and several on the induction charging device 10 arranged sensors. The engine unit 17 is inside the solid housing 18 arranged. It rests on the fixed housing 18 from. The sensors are designed as infrared sensors. In principle, the sensors can also be designed as other sensors that appear appropriate to the person skilled in the art.

To supply the energy transmission unit 13 and the motor unit 17 with electric current, the induction charging device 10 an infeed 30 on. The feed 30 is electrically connected to a public power grid. It supplies the energy transmission unit 13 with an alternating voltage. The feed 30 supplies the energy transmission unit 13 with 230 volts. The feed 30 is inside the fast housing 18 arranged.

For pre-positioning of the induction charging devices 10 . 11 to each other, the induction charging device 10 a contact element 31 on. The contact element 31 is for coarse positioning of the induction charging devices 10 . 11 to each other, in which only a vertical distance between the induction charging 10 . 11 is set, provided. For final positioning and thus for setting the optimal charge coverage is the motor unit 17 intended. The contact element 31 is in the charging process horizontally between the induction charging devices 10 . 11 arranged. It is in the loading process horizontally between the induction charging device 10 and the motor vehicle 22 arranged. In the charging process, the contact element contacts 31 with one side the Induction charging device 10 and with a side opposite the license plate 26 of the motor vehicle 22 , The contact element 31 is made of an adaptable material. It is made of an elastic material. The material from which the contact element 31 is, is magnetically neutral and electrically non-conductive. Basically, also on the contact element 31 be waived.

For positioning of the motor vehicle 22 for charging is the motor vehicle 22 in the direction of travel 15 towards induction charging device 10 moves until the motor vehicle 22 with the front license plate 26 against the contact element 31 suppressed. That in the spatial direction 29 movably mounted front housing 19 gives in the spatial direction 29 and thereby alleviates a shock of the motor vehicle 22 , The front housing 19 that is sprung in the spatial direction 29 is movably mounted, presses against the license plate 26 , whereby the vertical distance between the induction charging devices 10 . 11 and thus between the coils 27 . 28 remains constant. The vertical distance between the induction charging devices 10 . 11 stays in that direction in space 29 movably mounted front housing 19 during charging overlay adjustment, during repositioning, and during charging. Due to the positioning of the motor vehicle 22 only a rough positioning of the induction charging is done 10 . 11 to each other. It only becomes the vertical distance between the induction charging devices 10 . 11 by positioning the motor vehicle 22 set. A driver of the motor vehicle 22 only represents the vertical distance between the induction charging devices 10 . 11 by maneuvering the motor vehicle 22 one. An elaborate and associated with great skill maneuvering of the motor vehicle 22 to set the charge coverage and thus an optimal loading position is eliminated.

To set the charge coverage and thus the optimal loading position of the induction charging 10 . 11 and thus the coils 27 . 28 to each other, moves the motor unit 17 active the front housing 19 and thus the energy end unit 13 automatically in the spatial directions 14 . 16 until the optimal charge coverage is found. The motor unit positions to adjust the charge coverage 17 active the front housing 19 before starting the charging process. The engine unit 17 Automatically and motor-controlled positioning of induction charging devices 10 . 11 to each other on the loading position. To optimize the charging process and thus maintain the optimum loading position during charging, the motor unit positions 17 if necessary, the front housing 19 by actively moving to. If, for example, the motor vehicle 22 discharged during the charging process, resulting in a height of the vehicle-mounted induction charging device 11 changed, the motor unit fits 17 actively the height of the stationary induction charging device 10 by actively moving the front housing 19 in the spatial direction 16 at.

LIST OF REFERENCE NUMBERS

10

Induction charging device

11

Induction charging device

12

Kraftfahrzeugakkumulator

13

Power transmission unit

14

spatial direction

15

Motor vehicle driving direction

16

spatial direction

17

motor unit

18

solid housing

19

Vorgehäuse

20

Vehicle device

21

horizontal direction

22

motor vehicle

23

loaders

24

front

25

Power receiving unit

26

license plate

27

Kitchen sink

28

Kitchen sink

29

spatial direction

30

feed

31

contact element

32

Ladeüberdeckungseinstelleinheit

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 102009023409 A1 [0002]

Claims (10)

Induction charging device for the wireless horizontal loading and / or unloading of an electrical motor vehicle accumulator ( 12 ), with an inductive energy transmission and / or energy receiving unit ( 13 ) and one of a chassis of a motor vehicle ( 22 ) differently configured charge coverage adjustment unit ( 32 ), which is at least provided to the energy end and / or energy receiving unit ( 13 ) to be movably mounted to a setting of a loading cover, characterized in that the loading cover setting unit (14) 32 ) for setting the charge overlap the energy end and / or energy receiving unit ( 13 ) in at least one spatial direction ( 14 ), which has at least one horizontal component, movably supports. Induction charging device according to claim 1, characterized in that the spatial direction ( 14 ), which has at least one horizontal component, at least substantially perpendicular to a motor vehicle travel direction ( 15 ) is arranged. Induction charging device according to claim 1 or 2, characterized in that the charge coverage adjustment unit ( 32 ) for setting the charge overlap the energy end and / or energy receiving unit ( 13 ) in at least one spatial direction ( 16 ), which has at least one vertical component, movably supports. Induction charging device according to one of the preceding claims, characterized in that the charge coverage adjustment unit ( 32 ) a motor unit ( 17 ), which is provided for the active adjustment of the charge coverage of the energy end and / or energy receiving unit ( 13 ) to actively move, Induction charging device according to claim 4, characterized in that the motor unit ( 17 ) is provided to the energy end and / or energy receiving unit ( 13 ) nachzupositionieren at least in a single charge. Induction charging device according to one of the preceding claims, characterized by a fixed housing ( 18 ) and one movable with the fixed housing ( 18 ) connected front housing ( 19 ), in which the energy end and / or energy receiving unit ( 13 ) is at least partially arranged. Induction charging device according to claim 6, characterized in that the pre-housing ( 19 ) for the complete and permanent enclosure of the energy transmission and / or energy reception unit ( 13 ) is closed. Induction charging device according to claim 6 or 7, characterized in that the energy end and / or energy receiving unit ( 13 ) fixed to the front housing ( 19 ) and the front housing ( 19 ) in terms of drive technology with the motor unit ( 17 ) are connected. Induction charging device according to one of the preceding claims, characterized by a stationary arrangement. Induction charging system with a motor vehicle device ( 20 ) comprising at least one electric motor vehicle accumulator ( 12 ), and with an induction charging device ( 10 ) according to one of claims 1 to 9, for the wireless horizontal loading and / or unloading of the at least one motor vehicle accumulator ( 12 ) is provided.

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