EP3784519A1

EP3784519A1 - Locking device

Info

Publication number: EP3784519A1
Application number: EP19720767.3A
Authority: EP
Inventors: Tobias Klocke; Claus Töpfer; Christian Sturm
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2018-04-23
Filing date: 2019-04-08
Publication date: 2021-03-03
Also published as: DE102018109661A1; WO2019206364A1

Abstract

The invention relates to an electric motor-driven locking device (1) of a plug connector half (2) for producing an electric connection to another plug connector half for charging an electric or hybrid vehicle by plugging the other plug connector half into the plug connector half (2), having a movable locking pin (4) for locking the other plug connector half plugged into the plug connector half (2) and having a Hall effect sensor (7) which is arranged orthogonally to the plug-in direction (3), wherein a magnet (8) is provided on the locking pin (4) in a manner corresponding to the Hall effect sensor (7).

Description

locking device

description

The invention relates to an electromotively driven locking device of a connector half for establishing an electrical connection with a walls ren connector half for charging an electric or hybrid vehicle by inserting the other half of the connector half in the connector half, comprising an orthogonal to the direction of insertion movable locking pin for locking in the Connector half a plugged other connector half. In addition, the invention relates to a connector with a connector half with a locking device and an electric or hybrid vehicle with a control device for the electric or hybrid vehicle.

Batteries of electric or hybrid vehicles are usually charged via a charging plug as Steckerhälf te, which is plugged into a vehicle-side charging socket as another connector half. A La devorgang for charging the batteries of the electric or hybrid vehicle takes in comparison to refueling of vehicles with an internal combustion engine for a long time. As a rule, such a charging process takes several hours.

With such a long charging process, it is not reasonable for anyone to accompany the charging process of the vehicle over the entire charging time. Therefore, there is a risk that the charging process before fully charging the batteries by unplugging the charging plug from the

Charging socket is interrupted by an unauthorized third party. Locking devices, which len prevent the unplugging of the charging plug from a charging socket, are known from the prior art. A risk can also result from the fact that in case of charging with high currents and uncontrolled disconnection of the connector a risk of injury by z. B. Funkenschlag may arise.

The plugging of the charging plug into the socket is usually done manually. The insertion force required for insertion varies depending on the number of poles, contact and Gehäuseausfüh tion. So it may _V orkommen that Termina derhälften are not fully assembled. In such a case, the electrical contact is made, but the tightness and vibration resistance of the connector is impaired, which can lead to failures.

Based on this situation, it is an object of the present invention to reliably ensure that connector halves are correctly latched when charging an electric or hybrid vehicle and an unplugged unplugging is prevented.

The solution of the problem is achieved by the features of the independent claims. Advantageous embodiments are specified in the subclaims.

Accordingly, the invention is achieved by an electric motor-driven locking device of a connector. derhälfte for establishing an electrical connection with another connector half for charging an electric or hybrid vehicle by inserting the walls ren connector half in the connector half, comprising

a particular orthogonal and / or parallel to the direction of insertion movable Verrieglungsstift Verrie rules plugged into the connector half ande ren connector half and

an orthogonal to the plug-in direction or in a plug-in direction to the locking device or arranged on the Verrieglungsstift Hall sensor, wherein

on the locking pin or on the locking device corresponding to the Hall sensor, a magnet is provided so that by the Hall sensor a changeable by the movement position of the locking pin relative to the locking device can be determined.

The invention is further achieved by a half of the connector for establishing an electrical connection with another connector half for charging an electric or hybrid vehicle by inserting the walls ren connector half in the connector half, with an electric motor driven locking device comprising a particular orthogonal and / or parallel to Plug-in direction movable locking pin for locking the plugged into the connector half other connector half, wherein on the locking pin or on the locking device orthogonal to the plugging direction, a Hall sensor is provided and

An essential point of the invention is that the position of the locking pin relative to the locking device can be determined by the Hall sensor. In this respect, it is objectively determined whether the connector half of the half are completely assembled, so that not only made the electrical contact, but also tightness and vibration resistance of the connector is given, so that failures are minimized. Through the Hall sensor, a distance covered by the locking pin as a movement path can be measured in particular continuously, so that the respective current position of the locking pin is determined relative to the Verriegelungsein direction. For this purpose, the Hall sensor either stationary on the locking device, in particular on a housing of the locking device, or movable bar to the locking device, in particular to the housing of the locking device, be arranged fixed to the locking pin. The magnet is arranged depending Weil corresponding to it. The connector half and the other connector half can be designed as any known from the prior art connector halves for charging an electric car, for example as a type 2 connector and / or according to the standard IEC 60309, VDE-AR-E 2623-2-2 , IEC 62196, SAE J1772, JARI Level 3 DC and / or the CHAdeMO standard. The locking pin can in principle be designed arbitrarily Lich, for example as a ram or pin.

According to a preferred embodiment, the Verriege treatment device has an electric motor drive is directed to the method of Verrieglungsstiftes insbesonde re orthogonal and / or parallel to the direction of insertion. The electromotive drive is preferably designed as an electric motor and may have a transmission through which the drive is in operative connection with the locking pin. On the Verrieglungsstift can be provided a notch, in which an actuating element of the transmission engages to move the locking pin perpendicular right to the direction of insertion. Preferably, the Verrieglungsstift, halves in the inserted state of the connector, insbesondre by means of an opening provided in each connector opening insbesondre by means of the on, to prevent inadvertent release of the connector halves. Also preferably, the locking pin from the openings insbesondre particular by means of the drive can be brought out in order to solve the Steckhalbin derhälften from each other. According to another preferred embodiment, the magnet and the Hall sensor are arranged such that by moving the locking pin of the magnet and the Hall sensor are moved parallel to each other. The Hall sensor, also called a Hall probe or Hall sensor, is designed to measure the magnetic field emitted by the magnet by means of the Hall effect. As is known, a Hall sensor, when it is flowed through by a current into a magnetic field running perpendicular thereto, provides an output voltage as an output signal which, according to the so-called Hall effect, is proportional to the product of magnetic flux density and current. In the arrangement of the Hall sensor and magnet such that the magnet and the Hall sensor can be moved parallel to each other, ie in at least one position parallel to each other in particular adjacent but not touching, the position of the locking pin re lative to the locking device can be determined very precisely.

According to a further preferred embodiment, the locking pin on a bewe with the locking pin tion coupled element and the magnet or the Hall sensor is arranged on the element. Preferably, the magnet and / or the Hall sensor is rigidly on the Verriege ment pin, on the locking device, attached to the Ge housing of the locking device, aufklips bar, designed attachable and / or glued. The ele ment can be a component which is rigidly or detachably connected to the locking pin to in the latter case the magnet or the Hall sensor can be replaced a subject.

To design the Hall sensor exist in principle Lich different ways. In a particularly preferred embodiment of the Hall sensor is carried out, depending on a position of the magnet relative to the Hall sensor a pulse width modulated, PWM, current signal, a pulse width modulated voltage signal, an analog current signal, an analog voltage signal, a signal by means of a digital data bus and / or a to output digita les, Manchester coded signal. The PWM frequency is preferably 500 Hz to obtain the minimum resolution of 10 bits, especially in the range between 420Hz and 540Hz. For PWM frequencies less than 400Hz, the resolution can be 12 bits.

A Manchester-coded signal, also known as Phase Encoding, PE, or Phase Shift Keying direction stroke _S chrift described net, is a line code that is obtained at an encoding of a clock signal. In general, a Bitfol ge is used to binary modulate a phase position of the clock signal. In this respect, a Manchester-coded signal represents a form of digital phase modulation. Before the Hall sensor is calibrated, in particular special that a base level, a slope and / or linearity of the output signal is preferably adjustable during the production of the Hall sensor. The calibration can be performed after or before assembly of the interlocking device. Likewise, the calibration can take place in a workstation in which rather also a functional test of Verriegelungseinrich device is performed. As a digital data bus, for example, a serial bus system such as a field bus, CAN bus, in particular according to ISO 11898 can be used.

According to yet another preferred embodiment, a capacitor in contact with the Hall sensor is provided within the locking device. Preferably, the capacitor is arranged between contacts of the Hall sensor. The capacitor reduces unwanted effects caused by external electromagnetic disturbances. The condenser improves the measuring accuracy of the Hall sensor. A signal routing and / or power supply of the Hall sensor and / or the capacitor is preferably tracks through conductors, which are injected in the housing and / or in a lid of the locking device. The contacts of the Hall sensor and / or the capacitor can expediently be soldered, crimped or welded to the strip conductors.

In this connection, the capacitor is arranged within a preferred further education within the Verriegelungsein direction. Preferably, the capacitor is integrated in a transmission housing or in the housing of the Verriegelungsein direction.

According to a preferred embodiment of the Hall sensor is designed as a two-wire Hall sensor or as a three-wire Hall sensor. Preferably, the Hall sensor as a linear Hall sensor, in particular for detecting the of the magnet emitted magnetic field executed. The resolution of the Hall sensor is preferably at least 10 bits, in particular special 12 bits. The integral nonlinearity of the Hall sensor over the entire temperature range is preferably less than +/- 0.5%. The linearity error of the Hall sensor is preferably less than +/- 2%. The micro-linearity of the Hall sensor is preferably less than +/- 1% in a range of 0.5mm.

According to another preferred embodiment, the Mag net is designed as a ferrite magnet, as NeFeB magnet, as SaCo magnet or as a mixed form of the aforementioned magnets, the magnet to the locking pin or to the locking device is clipped and / or glued out and / or is the Hall sensor in a recess of the locking device or the locking pin can be used and / or injected. The magnet can be magnetized introduced into the locking device or initially unmagnetized gelungseinrichtung be introduced into the Verrie and then magnetized in the locking device. Preferably, the magnet or the Hall sensor is integrated in the locking pin and / or encapsulated with this. The Ausspa tion may also be provided in the cover of Verriegelungseinrich device or the Hall sensor or the magnet may be injected into the housing of the locking device or the lid.

The object of the invention is further achieved by a connector with a connector half with a locking device as described above. The object of the invention is also achieved by an electric or hybrid vehicle with a connector half as described above. The electric or hybrid vehicle can basically be configured arbitrarily, for example as an electric car, e-bus or the like. Before given to the connector half is seen as a charging socket in an outer wall of the electric or hybrid vehicle provided.

According to a preferred development, the electric or hybrid vehicle has a control unit for the electric or hybrid vehicle, wherein the control unit is set up to control the locking device and to process a signal generated by the Hall sensor. On the basis of the signal can be seen whether the connector halves are completely joined together, so that not only the electrical contact is made, but also tightness and vibration resistance of the connector is given. The control unit, also known as ECU, electronic control unit, ECM, electronic control module, preferably serves to control further electrical devices of the electric or hybrid vehicle. Likewise, a plurality of control devices can be provided, which are connected to the United locking device via a system bus as example, CAN, LIN, MOST, FlexRay, Ethernet, etc. with each other.

In another preferred embodiment of the connector or the electric or hybrid vehicle is the half-connector fastex as a socket, especially as Ladesteckdo- se, executed. According to another preferred further education of the connector or the electric or Hyb ridfahrzeugs the other connector half is designed as La destecker. As described above, the socket and / or the charging plug is preferably a type 2 socket or plug and / or according to the standard IEC 60309, VDE-AR-E 2623-2-2, IEC 62196, SAE J1772, JARI Level 3 DC and / or according to the CHAdeMO standard.

The object of the invention is also achieved by a method for determining a position of a locking pin relative to a locking device, wherein the Verrieglungsstift for locking a plugged into a connector half other half of the half is in particular driven orthogonally and / or parallel to the insertion direction driven by an electric motor,

is provided on the locking device or on the locking pin an orthogonal to the direction of insertion angeordne ter Hall sensor, and

is provided on the locking pin or on the locking device corresponding to the Hall sensor, a magnet, and with the step:

Determining the position of the locking pin rela tively to the locking device in the process of the locking pin.

Based on the particular position, it can be seen whether the connector halves are fully assembled so that not only the electrical contact between the connector halves is made, but also Tightness and vibration resistance of the connector is given.

Other embodiments and advantages of the method he will be apparent to those skilled in analogy to the previously described be locking device, the connector and / or the electric or hybrid vehicle.

The invention will be explained in more detail with reference to the accompanying drawings based on a preferred Ausfüh approximately example. However, it is the basic principle that the embodiments do not limit the invention, but only represent embodiments len represent. The illustrated features may be performed individually or in combination with other features of the specification as well as the claims individually or in combination.

Show it:

1 is a locking device of a connector half connector for making an electrical connection with another connector half according to a preferred embodiment in a schematic perspective view,

Fig. FIG. 2 shows a detail of the Verriegelungseinrich device of FIG. 1 in a sectional view, Fig. 3 a plug connector with the connector half with the locking device of FIG. 1 and the other connector half according to the preferred Ausführungsbei game in a schematic view, and

Fig. 4 shows an output signal of a Hall sensor of

Locking device according to FIG. 1 in dependence on a position of a locking pin of the locking device.

Fig. 1 shows a locking device 1 of a connector half connector, indicated with a box 2, to provide an electrical connection with another connector half 2a according to a preferred Ausfüh tion example in a schematic-perspective view to.

Fig. 2 shows a schematic view of the plug connector half 2 plugged in other Steckverbinderhälf te 2a. The connector half 2 is installed on an electric or hybrid vehicle 11 as a charging socket, currency rend the other connector half 2a is designed as a korres pondierender charging connector. The connector half 2 and the other connector half 2a are as type 2 plug and / or according to the standard IEC 60309, VDE AR-E 2623-2-2, IEC 62196, SAE J1772, JARI Level 3 DC and / or after the CHAdeMO standard for charging a battery, not shown, of the electric or hybrid vehicle 11 running. The locking device 1 has an orthogonal to the insertion direction of the connector halves 2, indicated by an arrow 3, movable locking pin 4 for locking the inserted into the connector half 2 th other connector half 2a. For moving the locking pin 4, the locking device 1 has an electromotive drive 5 designed as an electric motor, which is motion-coupled via a gear 6 to the locking pin 4 and is thus arranged to move the locking pin 4 orthogonally to the plug-in device 3. Specifically, an actuating arm motion-coupled with the gear 6 engages in a recess of the locking pin 4 in order to move the locking pin 4, as can also be seen in detail from FIG. 2.

The locking device 1 further has a ortho gonal to the insertion direction 3 arranged Hall sensor 7. Corresponding to the Hall sensor 7, a magnet 8 is provided on the United locking pin 4, so that the Hall sensor 7, the position of the locking pin 4 re lative to the locking device 1 can determine. The magnet 8 can be connected directly to the locking pin 4 or by means of a bewe with the locking pin 4 tion coupled element 4a, indicated in Fig. 3, a related party.

The magnet 8 can be unmagnetized on the locking pin 4 are attached by clipping or gluing and then magnetized. Likewise, the magnet 8 magnetized in the locking device 1 inserted be brought. To design the magnet 8 exist ren different ways, such as Fer ritmagnet, as a NeFeB magnet, as a SaCo magnet or mixing form of the aforementioned embodiments.

Fig. 2 shows a section of the Verriegelungseinrich device 1 according to FIG. 1 in a sectional view. The magnet 8 and the Hall sensor 7 are arranged parallel to each other. Accordingly, by moving the locking pin 4, the magnet 8 and the Hall sensor 8 are moved parallel to each other. In the present case, the Hall sensor 8 is provided on a housing of the locking device 1, for example, clipped to the housing or, as seen in Fig. 2, set in a recess of the housing a. Alternatively, the Hall sensor 8 on the Verrie gelungsstift 4 and the magnet 7 on the housing of the Ver locking device 1 may be provided.

In the present case, the Hall sensor 7 is designed as a two-wire Hall sensor 7 in order to output a pulse-width-modulated current signal with a resolution of 12 bits that can be configured in the range from 1 ms, 2 ms, 4 ms, to 128 ms as a function of the magnet 8. Further, within the Verriege treatment device 1, a standing with the Hall sensor 7 in contact capacitor 9 is provided to external electromag netic disturbances for the purpose of higher measurement accuracy to re ducieren. Signal routing and power supply of the Hall sensor 7, the drive and the capacitor 9, it follows by traces, which are injected into the housing or a lid of the locking device 1. The contacts of the Hall sensor 7, the drive and the Kon- capacitors 9 are soldered to the tracks, crimped or welded.

The electric or hybrid vehicle 11 has a control unit 10 which is set up to control the Verriegelungsein device 1 via a system bus protocol such as LIN, MOST, FlexRay, Ethernet, etc. and to process an output signal generated by the Hall sensor 7. The signal determines the position of the locking pin 4 relative to the locking device 1 or its housing. In this respect, can be seen on the basis of the signal, whether on the one hand, the connector halves 2, 2a are completely assembled and on the other hand also tightness and vibration resistance of the connector is given.

Fig. 4 shows such an output signal of the Hall sensor 7 in response to a position of the locking pin 4 relative to the locking device 1 and its Ge housing. The output signal of the Hall sensor 7 is towards its basic level, pitch and linearity configured so that at a position or travel of the locking pin 4 relative to the Ver locking device 1 and its housing of Omm signal 10% and at a Position or travel of 8mm the signal is 90%, each marked by round dots. The Hall sensor 7 operates with a Tole ranz of +/- 1mm, what an exact positioning he allows. LIST OF REFERENCE NUMBERS

1 locking device

2 connector half

2a Other connector half

3 plug-in direction

4 locking pin

4a element

5 drive

6 gears

7 Hall sensor

8 magnet

9 capacitor

10 control unit

11 electric or hybrid vehicle

Claims

claims

1. Electric motor driven locking device

(I) a connector half (2) for establishing an electrical connection with another connector half (2a) for charging an electric or hybrid vehicle

(II) by inserting the other connector half (2a) in the connector half (2), comprising

a movable Verrieglungsstift (4) for Verrie the plug in the connector half (2) inserted other connector half (2 a) and

an orthogonal to the plug-in direction or in a plug-in direction (3) on the locking device (1) o- on the Verrieglungsstift (4) arranged Hall sensor (7), wherein

on the locking pin (4) or on the Verriege treatment device (1) corresponding to the Hall sensor (7), a magnet (8) is provided so that by the Hall sensor (7) by a movable movement of the locking pin (4) relative to the United locking device (1) can be determined.

2. Locking device (1) according to the preceding claim, wherein the locking device (1) has an electric motor drive (5) arranged for moving the Verrieglungsstiftes (4).

3. locking device (1) according to one of the preceding claims, wherein the magnet (8) and the Hall sensor (7) are arranged such that by methods of Ver Locking pin (4) of the magnet (8) and the Hall sensor (7) are moved parallel to each other.

4. Locking device (1) according to one of vorherge existing claims, wherein the locking pin (4) with the locking pin (4) movement-coupled ele ment (4 a) and the magnet (8) or the Hall sensor (7) on the element (4 a ) is arranged.

5. locking device (1) according to one of vorherge existing claims, wherein the Hall sensor (7) is executed, depending on a position of the magnet (8) re relatively to the Hall sensor (7) a pulse width modulated current signal, a pulse width modulated voltage signal, an analog current signal to output an analog voltage signal, a signal by means of a digital data bus and / or a digital, Manchester coded signal.

6. locking device (1) according to one of vorherge existing claims, wherein within the Verriegelungsein direction (1) with the Hall sensor (7) in contact ste existing capacitor (9) is provided.

7. locking device (1) according to the preceding claim, wherein the capacitor (9) within the Verrie gelungseinrichtung (1) is arranged.

8. Locking device (1) according to one of vorherge existing claims, wherein the Hall sensor (7) leads out as a two-wire Hall sensor (7) or as a three-wire Hall sensor (7).

9. locking device (1) according to one of vorherge existing claims, wherein the magnet (8) is designed as a ferrite magnet, as NeFeB magnet, as SaCo magnet or as a mixed form of the aforementioned magnets, the magnet (8) to the locking pin (4) or to the Verriegelungsein direction (1) can be clipped and / or glued and / or the Hall sensor (7) in a recess of Ver locking device (1) or the locking pin (4) used and / or is designed injectable.

10. Connector having a connector half (2) with a locking device (1) according to one of the preceding claims.

11. Electric or hybrid vehicle (11) with a fastex binder half (2) according to the preceding claim.

12. Electric or hybrid vehicle (11) according to the preceding claim, with a control unit (10) for the electric or hybrid vehicle, wherein the control device (10) is arranged to control the locking device (1) and one of the Hall sensor ( 7) to process generated signal.

13. Connector or electric or hybrid vehicle (11) according to any one of the preceding claims, wherein the plug connector half (2) is designed as a socket.

14. Connector or electric or hybrid vehicle (11) according to any one of the preceding claims, with the other connector half (2a) designed as a charging connector.

15. A method for determining a position of a Verrie gelungsstifts (4) relative to a Verriegelungseinrich device (1), wherein

the locking pin (4) for locking a plug in a connector half (2) inserted other connector half (2a) is driven driven by an electric motor,

on the locking device (1) or on the Ver rieglungsstift (4) an orthogonal to the plug-in direction (3) arranged Hall sensor (7) is provided, and

on the locking pin (4) or on the Verriege treatment device (1) corresponding to the Hall sensor (7), a magnet (8) is provided, and with the step:

Determining the position of the locking pin (4) relative to the locking device (1) in the procedural ren of the locking pin (4).