DE102018009091A1 - Charging device for charging an electrically powered vehicle and method for operating a charging device - Google Patents

Abstract

The invention relates to a charging device (8) for charging an electrically operated vehicle (1) with a base plate (2) having in an inner housing a primary coil (3) for charging the electrically operated vehicle (1), and a sensor (5). for detecting objects located in the vicinity of the bottom plate (2). Furthermore, the invention relates to a method for operating a loading device (8).

Description

The invention relates to a charging device for charging an electrically operated vehicle with a base plate having in an inner housing a primary coil for charging the electrically operated vehicle and a sensor for detecting objects which are in the vicinity of the bottom plate. Furthermore, the invention relates to a method for operating a charging device.

In an inductive charging device, sensors for detecting specific disturbance variables, such as metallic objects, are often installed. Due to the strong magnetic field that prevails during the energy transfer of a primary coil to a secondary coil, various foreign objects can heat up very strongly.

The DE 10 2017 011 616 A1 discloses a method for avoiding mechanical contacting between at least one motor vehicle component of an at least partially electrically powered motor vehicle and a power transmission element of a charging device for the motor vehicle, wherein a current position of the at least one different from the receiver by means of a signal transmitted from the energy transmission element to a receiver of the motor vehicle Motor vehicle component is determined relative to the energy transmission element by means of a control device, wherein upon reaching a predetermined relative position of the at least one motor vehicle component to the power transmission element, a brake signal for a braking device of the motor vehicle is generated by the control device, wherein in the predetermined relative position contacting the energy transmission element by the at least one Motor vehicle component is avoided.

The WO 20 100 98397 A1 discloses a power supply system for supplying power to a mobile unit provided with a power supply device provided with a power supply device and a power receiving device, the power receiving device being provided with a charging device and a power receiving device. The power supply is provided in a mounting table on which the mobile unit can be mounted, and supplies power without contact to the mobile unit mounted on the mounting table. The charging device is provided in the mobile unit, which can be mounted on the mounting table, and charges an energy storage device mounted in the mobile unit. The power receiving device receives, while the mobile unit is mounted on the mounting table, electric power supplied from the power supply device without contact with the power supply device, and supplies the received power to the charging device. A guide informs a user of the result of a position detection to move the mobile unit to the optimum position.

Positioning a vehicle on the loader can damage sensors.

The present invention has for its object to protect sensors from dirt and damage.

The object is achieved by a charging device for charging an electrically operated vehicle according to claim 1 and a method for operating the charging device according to claim 7. Meaningful developments and advantageous embodiments are described in the subclaims.

One aspect of the invention relates to a charging device for charging an electrically powered vehicle having a base plate having in an inner housing a primary coil for charging the electrically powered vehicle and a sensor for detecting objects which are in the vicinity of the bottom plate, wherein the sensor is formed on a bottom plate, wherein the sensor with a mechanism of the loading device in a first position is completely positionable in the inner housing of the bottom plate, and in a position different from the first position second position of the sensor with the mechanism is positioned so that the sensor of the Floor plate protrudes. The sensor can detect foreign objects located in the vicinity of the bottom plate. For example, foreign objects may be metallic and non-metallic articles or smaller animals that may be located between the primary coil and a secondary coil disposed on the electrically powered vehicle.

The sensors may be, for example, Hall sensors or infrared sensors. The sensors can be designed with a camera. The sensors may also be optical sensors, distance sensors or temperature sensors for monitoring the inductive charging process.

The mechanism may be formed as a spring mechanism, for example with a leaf spring. By way of example, the mechanism can also be controlled by an electric motor or magnetically. The mechanism does not have to be automatic but it can also be done manually via a user.

Furthermore, it is provided that the mechanism may be a pivoting mechanism in order to pivot the sensor between the first position and the second position. The pivoting can be done for example by means of a swivel arm. The bottom plate has the inner housing, which has the primary coil. For example, the bottom plate should have at least the dimension that the sensor can be fully positioned in the bottom plate and does not protrude from the bottom plate.

In a further embodiment it is provided that the mechanism can be an extension mechanism in order to be able to move the sensor linearly between the first position and the second position. For example, the sensor may be positioned in the second position in regions and in its longitudinal extent perpendicular to the bottom plate and protrude from the bottom plate. The sensor can assume any number of sub-positions in its second position by the height of the protruding sensor area is variably adjustable. Depending on the distance between the primary coil and the secondary coil, the sensor can be set arbitrarily high.

Furthermore, it is provided that the sensor can be positioned in an inactive state of the primary coil with the mechanism in the first position, and the sensor can be positioned in an active state of the primary coil with the mechanism in the second position. If no inductive charging of the electrically operated vehicle takes place, the sensor may be retracted, for example. The sensor optionally detects in the first position, for example in the retracted state, no foreign objects, since no inductive charging takes place and thus no electromagnetic field is caused. As soon as the sensor is in the second position, which is caused by a folding or an extension, all foreign objects located in the vicinity of the bottom plate can be detected. For example, the sensor may also include the camera. The inductive charging of the electrically operated vehicle may preferably take place only in the second position. If, for example, a foreign object was detected by the sensor, the sensor sends a signal via a communication unit to a control unit of the primary coil. The inductive charging process is preferably interrupted until the foreign object has been removed. The sensor can automatically position itself via the control unit or it can be positioned manually via a user.

A further aspect of the invention relates to a method for operating a charging device, wherein a sensor of the charging device is designed to detect objects which are located in the vicinity of a bottom plate of the charging device, wherein the sensor is brought into a first position, wherein the Sensor is fully positioned in the inner housing of the bottom plate, and the sensor is brought to a second position, wherein the sensor is positioned so that the sensor protrudes from the bottom plate. As soon as an electrically powered vehicle is charged inductively, a sensor can position itself so that it protrudes from the bottom plate. The positioning can be done via a pivot mechanism or an extension mechanism. During inductive charging, the sensor can detect and detect possible foreign objects located in the vicinity of the bottom plate. If a foreign object has been detected, the inductive charging process via the control unit is preferably interrupted until the foreign object has been removed. If the electrically powered vehicle is fully charged, the inductive charging process can be terminated and the sensor can be positioned back to its first position. So that the sensor is protected from dirt and damage, the sensor is preferably in its inactive state and in its first position completely in the bottom plate. The control unit and the communication unit may be arranged in the bottom plate and / or outside the bottom plate.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or in the figures alone can be used not only in the respectively specified combination but also in other combinations or in isolation, without the scope of To leave invention.

• 1 eine schematische Darstellung des Verfahrens zum Betreiben der Ladevorrichtung;
• 2 eine beispielhafte Darstellung des Mechanismus beim Positionieren des Sensors; und
• 3 eine weitere vorteilhafte Ausgestaltung des Mechanismus beim Positionieren des Sensors.

The attached drawings show in:

• 1 a schematic representation of the method for operating the charging device;
• 2 an exemplary representation of the mechanism in positioning the sensor; and
• 3 a further advantageous embodiment of the mechanism when positioning the sensor.

In 1 is a schematic representation of the method for operating a charging device 8th (see. 2 ).

In a first step S1 becomes the sensor 5 (see. 2 ) in a first position P1 brought. The sensor 5 This is completely in an inner housing 9 the bottom plate 2 positioned.

In a second step S2 becomes an electrically powered vehicle 1 For example, an electric car or a hybrid car, with its secondary coil 4 over a primary coil 3 preferably placed at a small distance parallel to each other.

In a third step S3 finds an inductive charging of the electrically powered vehicle 1 instead of.

The sensor 5 will be in a fourth step S4 then in a second position P2 brought, the sensor 5 here from the bottom plate 2 protrudes.

The sensor 5 can in a fifth step S5 Detect and detect foreign objects, such as metallic objects.

If in a sixth step S6 For example, a metallic object has been detected, the sensor sends 5 via a communication unit 6 a signal to a control unit 7 , The inductive charging is interrupted until, for example, the metallic object has been removed. When this has been done, inductive charging can continue (see step S3 ).

In 2 is the electrically powered vehicle 1 with an inductive charging device 8th shown. The primary coil 3 is in an inner housing 9 the bottom plate 2 arranged. A secondary coil 4 is located in the electrically powered vehicle 1 over the bottom plate 2 , In addition to the primary coil 3 there is also a sensor 5 in the bottom plate 2 , In his first position P1 is the here elongated sensor 5 horizontal with its longitudinal direction in the bottom plate 2 arranged. As soon as an inductive charging process takes place, the sensor can 5 about a mechanism M , preferably by a pivoting mechanism to its second position P2 to be brought. Between the first position P1 and the second position P2 can the sensor 5 several intermediate positions pz taking. As soon as the sensor 5 his second position P2 has taken the sensor 5 to start detecting. When the inductive charging process is finished, the sensor can 5 again take his starting position, ie P1. The communication unit 6 and the control unit 7 for example, outside the bottom plate 2 arranged. The communication unit 6 gives in from the sensor 5 caused signal to the control unit 7 continue. The control unit 7 For example, it may initiate the interruption of an inductive charging process.

The 3 shows a further advantageous embodiment of the mechanism M as an extension mechanism. The electrically powered vehicle 1 For example, an electric car or a hybrid car, is located with the secondary coil 4 above the primary coil 3 , In the bottom plate 2 are, for example, the primary coil 3 , the sensor 5 , the communication unit 6 and the control unit 7 arranged. The sensor 5 is in the inactive state of the primary coil 3 in its retracted first position P1 , here with its longitudinal side perpendicular to the bottom plate 2 , By extending with the extension mechanism, the sensor can move to its second position P2 to be brought. Between the first position P1 and the second position P2 Any number of sub-positions can be taken. The sensor 5 For example, it can be automatically or manually positioned by a user via electronics. The communication unit 6 and the control unit 7 are for example in the bottom plate 2 arranged.

LIST OF REFERENCE NUMBERS

1

Electrically operated vehicle

2

baseplate

3

primary coil

4

secondary coil

5

sensor

6

communication unit

7

control unit

8th

loader

9

inner housing

S1

First step

S2

Second step

S3

Third step

S4

fourth step

S5

Fifth step

S6

Sixth step

P1

First position

P2

Second position

pz

intermediate position

M

mechanism

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 102017011616 A1 [0003]
• WO 2010098397 A1 [0004]

Claims (7)

Charging device (8) for charging an electrically operated vehicle (1) with - a base plate (2) having in an inner housing (9) a primary coil (3) for charging the electrically operated vehicle (1) and - a sensor (5) for detecting objects located in the vicinity of the bottom plate (2), characterized in that - the sensor (5) is formed on a bottom plate (2), - the sensor (5) with a mechanism (M) of the loading device (8) in a first position (P1) is completely positionable in the inner housing (9) of the bottom plate (2), and - in a second position (P2) different from the first position (P1) of the sensor (5) with the mechanism ( M) is positionable so that the sensor (5) protrudes from the bottom plate (2). Loading device (8) after Claim 1 characterized in that the mechanism (M) is a pivot mechanism for pivoting the sensor (5) between the first position (P1) and the second position (P2). Loading device (8) after Claim 1 characterized in that the mechanism (M) is an extension mechanism for linearly moving the sensor (5) between the first position (P1) and the second position (P2). Loading device (8) after Claim 3 characterized in that the sensor (5) in the second position (P2) partially, and in its longitudinal extent perpendicular to the bottom plate (2) positioned, protrudes from the bottom plate (2). Loading device (8) after Claim 1 characterized in that the sensor (5) is positioned in an inactive state of the primary coil (3) with the mechanism (M) in the first position (P1). Loading device (8) after Claim 1 characterized in that the sensor (5) is positioned in an active state of the primary coil (3) with the mechanism (M) in the second position (P2). Method for operating a loading device (8), wherein a sensor (5) of the loading device (8) is designed to detect objects which are located in the vicinity of a bottom plate (2) of the loading device (8), characterized in that the sensor (5) is brought into a first position (P1), wherein the sensor (5) is completely positioned in the inner housing (8) of the base plate (2) (S1), and - the sensor (5) in a second position (P2), wherein the sensor (5) is positioned so that the sensor (5) protrudes from the bottom plate (2) (S4).

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