Locking device for locking two charging interfaces, system including such a locking device and method for controlling such a locking device

Abstract

The invention relates to a locking device (300) for locking two electrical charging interfaces (100, 200), wherein the locking device (300) has a first bolt (310, 311, 312), a second bolt (320, 321, 322) and a drive (340) operatively connected to said first and second bolts, wherein the first bolt (310, 311, 312) is designed to lock a first electrical charging interface (100), wherein the second bolt (320, 321, 322) is designed to lock a second electrical charging interface (200), and wherein the drive (340) is designed to move the first bolt (310, 311, 312) and the second bolt (320, 321, 322) synchronously with one another between an unlocked position, in which the charging interface (100, 200) in question is unlocked, and a locked position, in which the charging interface (100, 200) in question is locked.

Description

[0001] Locking device for locking two charging interfaces, system with such a locking device and method for controlling such a locking device

[0002] Description:

[0003] The invention relates to a locking device for locking two electrical charging interfaces, a system comprising a first electrical charging interface, a second electrical charging interface, and such a locking device, as well as a method for controlling such a locking device. Charging interfaces are understood to mean, in particular, charging sockets in the field of electromobility, which are designed to correspond to associated charging plugs and are used for the electrical charging of motor vehicles. Such charging interfaces are well known in the prior art, for example from DE 10 2015 116 649 A1. A distinction can essentially be made between AC charging interfaces or AC charging sockets and DC charging interfaces or DC charging sockets, whereby such an AC charging socket and such a DC charging socket can also be arranged directly next to one another as a combination charging socket or combination charging interface.

[0004] In order to prevent an unintentional interruption of a charging process taking place via a charging interface, the prior art often already provides a locking mechanism on the charging interfaces that interacts with the associated charging plug, by means of which the charging plug cannot be unintentionally released from the charging socket.

[0005] However, it is still usually possible for a user to intentionally remove the charging plug from the charging socket, regardless of other environmental or safety conditions, although this may result in an unplanned and unforeseen interruption of the charging process.

[0006] Since such an unplanned or unforeseen interruption can pose a risk to the user, such as the formation of an arc, or it can be an unauthorized interruption of the charging process, it is desirable to be able to lock and unlock the locking mechanism as a primary lock via a secondary lock or the charging plug in the charging socket directly, so that the charging plug can only be released from the locking mechanism or from the charging socket when it is unlocked.

[0007] Such secondary locking devices are already known for some individual charging interfaces. However, if two adjacent charging interfaces or the two charging sockets of a combined charging interface formed by them are each to have such a secondary locking device, it is planned to provide these completely separate from each other and as individual assemblies with correspondingly separate connections, which would result in increased installation space requirements, increased manufacturing costs, and increased assembly costs.

[0008] The invention is therefore based on the object of overcoming the aforementioned disadvantages and of providing a locking device for locking two electrical charging interfaces, a system having such a locking device and an associated method.

[0009] This problem is solved by the combination of features according to patent claim 1.

[0010] According to the invention, a locking device for locking two electrical charging interfaces is therefore proposed, which are in particular a first charging interface designed as an AC charging interface and a second charging interface designed as a DC charging interface. Alternatively, however, the two electrical charging interfaces can each be an AC charging interface or a DC charging interface. Furthermore, each of the interfaces in the aforementioned combinations, or both interfaces, can each be a combined charging interface or a combined AC-DC charging interface. Furthermore, the two charging interfaces are preferably arranged directly adjacent to one another or integrated to form a combination charging interface. The locking device is intended in particular for motor vehicles or charging infrastructure for electromobility.According to the invention, the locking device comprises a first latch, a second latch, and a drive operatively connected thereto. The first latch is designed to lock a first electrical charging interface of the two electrical charging interfaces, and the second latch is designed to lock a second electrical charging interface of the two electrical charging interfaces. Furthermore, the drive is designed to move the first latch and the second latch synchronously with one another between a respective release position, in which the respective charging interface is unlocked, and a respective locking position, in which the respective charging interface is locked.

[0011] Preferably, the drive moves the first latch and / or the second latch by a linear movement between the respective release position and the respective locking position, although alternative movement patterns may also be provided. For example, the drive can move the first latch and / or the second latch by a rotary movement between the respective release position and the respective locking position.

[0012] A locked charging interface means that a charging plug arranged in a charging socket of the charging interface cannot be removed from it, whereas with an unlocked charging interface the charging plug can be removed from the charging socket.

[0013] If the charging interface has a primary locking mechanism, for example one that can be directly controlled by a user, as may be the case for the locking mechanism explained below, the proposed locking device can serve as a secondary locking mechanism.

[0014] In addition, the first latch and / or the second latch can be designed to lock the respectively associated charging plug directly in the charging socket, i.e. to releasably fix it, or to lock, i.e. releasably fix it, in the charging socket via a blocking of the primary locking or the respective locking mechanism, as explained below. An advantageous development of the locking device provides that the first latch and the second latch are connected to one another via a connecting body, in particular rigidly and / or by means of a material fit. The drive is operatively connected to the first latch and the second latch via the connecting body and is designed to move or displace the two latches by moving the connecting body between the release position and the locked position.

[0015] In one variant, the drive additionally comprises an actuator, in particular an electric and / or pneumatic actuator, and a spring element, wherein the actuator is further preferably designed as a linear drive. Furthermore, the actuator is designed to move the first latch and the second latch from a basic position into an actuated position when appropriately controlled, counter to a spring force acting through the spring element, so that the two latches are spring-returned to the basic position by the spring element or their movement into the basic position is at least assisted by the spring element. The spring element and / or the actuator are / is designed to move the first latch and the second latch, in turn, from the actuated position into the basic position when appropriately controlled.Depending on the desired functionality, for example whether the charging interfaces should be easily accessible in the event of a fault or emergency, the basic position is the locked position and the actuated position is the released position, or the basic position is the released position and the actuated position is the locked position.

[0016] Preferably, the first latch is designed as a pin extending along a first axis. Additionally or alternatively, the second latch is designed, in particular, as a pin extending along a second axis, wherein the first axis and the second axis are preferably parallel to one another. The respective movement of the first latch and the second latch between the release position and the lock position can be a purely linear displacement.

[0017] A further aspect of the invention relates to a system comprising a first electrical charging interface, a second electrical charging interface and a locking device according to the invention. The first

[0018] The charging interface has a first charging socket for coupling to a first charging plug, wherein the first charging interface is preferably an AC charging interface, such that the first charging socket is preferably an AC charging socket for coupling to an AC charging plug. The second charging interface has a second charging socket for coupling to a second charging plug, wherein the second charging interface is preferably a DC charging interface, such that the second charging socket is preferably a DC charging socket for coupling to a DC charging plug. The first charging socket has a first locking mechanism for releasably locking the first charging plug in the first charging socket, wherein this can be a primary locking mechanism, which can further preferably be operated by a user directly on the first charging plug.Analogously, the second charging socket has a second locking mechanism for releasably locking the second charging plug in the second charging socket, which in turn can be a primary locking mechanism, which can also preferably be operated by a user directly on the second charging plug. The first latch is designed to lock the first locking mechanism in the locked position, i.e. to block it, so that the locking of a (first) charging plug locked in the first charging socket cannot be released, and to unlock it in the release position, i.e. not to block it, so that the locking of a (first) charging plug locked in the first charging socket can be released, whereby the locking device acts via the first latch as a secondary locking mechanism for the primary locking of the first charging socket or the first charging plug.Analogously, the second latch is designed to lock the second locking mechanism in the locking position, i.e. to block it, so that the locking of a (second) charging plug locked in the second charging socket cannot be released, and to unlock it in the release position, i.e. not to block it, so that the locking of a (second) charging plug locked in the second charging socket can be released, whereby the locking device acts via the second latch as a secondary locking for the primary locking of the second charging socket or the second charging plug.

[0019] Accordingly, the respective charging plug cannot be pulled out of the respective charging socket unintentionally or without authorization.

[0020] Furthermore, a variant of such a system provides that the first locking mechanism has a first latching element which is designed for latching and derusting along a first latching path with a first counter-latching element provided on the first charging plug, so that if the first latching element becomes rusty, the first charging plug is locked on or in the first charging socket with the first counter-latching element and the lock is released when the first latching element is derusted with the first counter-latching element, so that the first charging plug can be released or removed from the first charging socket. The first latch is designed to be arranged outside the first latching path in its release position and to block the first latching path in its locked position, for example by extending into it or by blocking, i.e. preventing, the movement of the first latching and / or the first counter-latching element along the first latching path.Accordingly, the first locking element and the first counter-rust element cannot be derusted from rust by means of the first latch in their locked position, and the first charging interface is thereby locked. The same can apply analogously to the second locking mechanism and the second latch. In this case, the second locking mechanism has a second locking element which is designed for locking and derusting along a second locking path with a second counter-rust element provided on the second charging plug, such that if the second locking element becomes rusty, the second charging plug is locked on or in the second charging socket with the second counter-locking element, and the locking is released when the second locking element is derusted with the second counter-rust element, i.e. the second charging plug can be released or removed from the second charging socket.The second latch is designed to be arranged outside the second locking path in its release position and to block the second locking path in its locking position, for example, by extending into it or by blocking, i.e., preventing, the movement of the second locking element and / or the first counter-grating element along the second locking path. Accordingly, the second locking element and the second counter-grating element cannot be de-rusted together with the second latch in its locking position, and the second charging interface is thus locked.

[0021] With this variant it becomes clear again that the respective charging interface is not directly locked, i.e. the respective charging plug is not directly fixed in the respective charging socket, but is locked indirectly by blocking or preventing the release of the primary locking formed by the respective locking mechanism.

[0022] Furthermore, the system can be developed such that the first latch is designed to lock the first locking mechanism in the locked position, i.e. to block it so that no charging plug can be inserted into the first charging socket, and to unlock it in the released position, i.e. not to block it, so that a charging plug can be inserted into the first charging socket. Additionally or alternatively, this also applies to the second latch and the second locking mechanism. Accordingly, the second latch can be designed to lock the second locking mechanism in the locked position, i.e. to block it so that no charging plug can be inserted into the second charging socket, and to unlock it in the released position, i.e. not to block it, so that a charging plug can be inserted into the second charging socket.

[0023] In addition, this can increase safety in that no further charging plug can be inserted into a still free charging socket, even if a charging process is already in progress via the other charging socket or the other charging interface.

[0024] In addition, the proposed system can further comprise a first cover element for covering the first charging socket, which is designed to correspond to the first locking mechanism of the first charging socket, such that the first cover element can be releasably locked to the first charging socket by the first locking mechanism. The cover element, which can also be referred to as a lid, can accordingly serve to cover the charging socket when no charging plug is plugged in or no charging plug is to be plugged in. In this case, the first latch is designed to lock the first locking mechanism in the locked position, i.e. to block it, so that the locking of a cover element locked to the first charging socket cannot be released, and to unlock it in the release position, i.e. not to block it, so that the locking of a (first) cover element locked to the first charging socket can be released.Additionally or alternatively, it can also be provided that the system further comprises a second cover element for covering the second charging socket, which is designed to correspond to the second locking mechanism of the second charging socket, such that the second cover element can be releasably locked to the second charging socket by the second locking mechanism. The second latch is designed analogously to lock the second locking mechanism in the locked position, i.e. to block it, so that the locking of a cover element locked to the second charging socket cannot be released, and to unlock it in the release position, i.e. again not to block it, so that the locking of a (second) cover element locked to the second charging socket can be released.

[0025] If the two cover elements are provided separately from each other, it can be ensured that the respective associated charging interface cannot be exposed without authorization, so that no unauthorized manipulation of the charging interfaces is possible and the proposed locking device additionally acts as a tank cap lock.

[0026] The two cover elements can also be formed integrally with each other, whereby the proposed locking device acts in the sense of a tank cap lock.

[0027] Furthermore, it can be provided that the system further comprises a first charging plug (AC charging plug) that can be plugged into the first charging socket and / or a second charging plug (DC charging plug) that can be plugged into the second charging socket.

[0028] Both the locking device according to the invention itself and the system comprising the locking device according to the invention are characterized by the fact that, on the one hand, safety-relevant additional functions can be provided at two adjacently arranged charging interfaces, which is particularly important in the field of electromobility, and, on the other hand, these additional functions are provided in a space-saving and simple manner, since only one drive is used for two locks, so that correspondingly fewer components and less space are required, which simplifies installation and control and reduces manufacturing costs. A further aspect of the invention also relates to a method for controlling a locking device according to the invention or for controlling a system according to the invention.The drive can be controlled by a locking signal to move the first latch and the second latch into a locked position, and by a release signal to move the first latch and the second latch into a released position. The locking signal is transmitted to the drive upon receipt of a locking command. Upon receipt of a release command, at least one safety condition is checked, one of which is that no charging takes place via the first charging interface or the second charging interface. If all safety conditions are met, the release signal is transmitted to the drive.

[0029] Such a method is integrated in particular via a control device which can be connected to the locking device for control purposes or integrated into it.

[0030] Further security conditions can be checked, for example, whether a vehicle on which the charging process is taking place is unlocked, whether an authenticator or an (electrical) key is within a predetermined range and / or whether there is approval from an authorized user.

[0031] Preferably, the locking device is only activated to bring the bolts into the release position when all safety conditions are met.

[0032] The features disclosed above can be combined in any way, as long as this is technically possible and they do not contradict each other. Other advantageous developments of the invention are characterized in the subclaims or are presented in more detail below, together with the description of the preferred embodiment of the invention, with reference to the figures. They show:

[0033] Fig. 1 System comprising locking device and two electrical charging interfaces in perspective view;

[0034] Fig. 2 Exploded view of a locking device;

[0035] Fig. 3 side view of a system with the first charging plug inserted;

[0036] Fig. 4 Detailed view according to Figure 3;

[0037] Fig. 5 side view of a system with the second charging plug inserted;

[0038] Fig. 6 Detailed view according to Figure 5;

[0039] Fig. 7 Procedure for controlling a locking device.

[0040] The figures are schematic examples. Identical reference numerals in the figures indicate identical functional and / or structural features.

[0041] Figure 1 shows a locking device 300 or a system comprising the locking device 300 and a first charging interface 100 designed as an AC charging interface and a second charging interface 200 designed as a DC charging interface. To establish an electrical connection and to enable a respective charging process, the first charging interface 100 has a first charging socket 110, which in turn is designed as an AC charging socket, and the second charging interface 200 has a second charging socket 210, which is correspondingly designed as a DC charging socket. Due to safety requirements, particularly in the field of electromobility, it is desirable to be able to prevent a charging plug 120, 220 that can be inserted into the respective charging socket 110, 210, as shown, for example, in Figures 3 to 6, from being pulled out during an ongoing charging process.If a charging plug (120, 220) is removed from the respective charging socket (110, 210) during an ongoing charging process, arcing may occur, for example. Furthermore, the charging process should not be interrupted accidentally or by an unauthorized user.

[0042] As a cost-effective and at the same time space-saving solution, the locking device 300 is proposed, as shown in Figure 1 in interaction with the charging sockets 110, 210 or in Figure 2 in an exploded view.

[0043] For this purpose, the locking device 300 has a first latch 310 and a second latch 320 as well as a single drive 340, which is designed to move both the first latch 310 and the second latch 320 synchronously between a respective release position and a respective blocking position.

[0044] In this case, the first charging interface 100 is unlocked or released by the first latch 310 in the release position, so that an associated charging plug 120 can be inserted into or removed from the associated charging socket 110, and is locked in the blocking position, so that an associated charging plug 120 cannot be inserted into the associated charging socket 110 and cannot be removed or unplugged from it.

[0045] Analogously, the second charging interface 200 is unlocked or released by the second latch 320 in the release position, so that an associated charging plug 220 can be plugged into or unplugged from the associated charging socket 210, and is locked in the blocking position, so that an associated charging plug

[0046] 220 cannot be plugged into the corresponding charging socket 210 and cannot be unplugged or removed from it.

[0047] For this purpose, the two bars 310, 320 are connected in a materially bonded manner via a connecting body 330 shown exposed in Figure 2 and are formed integrally with one another, wherein the composite body thus formed from the bars 310, 320 and the connecting body 330 is moved in its entirety by the drive 340.

[0048] For this purpose, the drive 340 has an actuator 341 and a spring element 342. By means of the actuator 341, the latches 310, 320 can be brought from a basic position corresponding to the release position into an actuated position corresponding to the locked position, counter to the spring force acting on the composite body or the connecting body 330 by the spring element 342. From the actuated or, in this case, the locked position, the latches 310, 320 are spring-reset to the basic or, in this case, the released position by the spring element 342, i.e., by the spring force acting on the composite body, so that the latches 310, 320 are moved into the released position, for example, when the actuator 341 is correspondingly activated or in the event that the actuator 341 is de-energized or fails, and the charging interfaces 100, 200 are unlocked again.

[0049] Although it can be provided that the first latch 310 locks, i.e. releasably fixes, a first charging plug 120 directly in the first charging socket 110 and the second latch 320 similarly locks, i.e. releasably fixes, a second charging plug 220 directly in the second charging socket 210, it is provided in the variant shown by Figures 1 to 6 that the locking device 300 or its latches 310, 320 are designed as a secondary lock for locking or unlocking a primary lock provided on the respective charging interface 100, 200 and formed by a respective locking mechanism 111, 211.

[0050] In this case, a first locking mechanism 111 is provided on the first charging interface 100 and a second locking mechanism 211 is provided on the second charging interface 200, which in the present case are each formed by a locking element 112, 212 on the charging sockets 110, 210, which corresponds to a counter-locking element 122, 222 provided on the respective charging plug 120, 220.

[0051] For a better illustration of the respective locking mechanism

[0052] 111. 211 In Figures 3 and 5, a charging plug 120, 220 is shown inserted into the respective charging socket 110, 210, and the respective locking mechanism 111, 211 is shown in detail in Figures 4 and 6.

[0053] Figure 4 thus shows a detailed view of the first locking mechanism 111 of the first charging interface 100 and Figure 6 shows a detailed view of the second locking mechanism 211 of the second charging interface 200.

[0054] As already described and particularly shown in Figures 4 and 6, the locking mechanisms 111, 211 each provide a locking element

[0055] 112. 212 which correspond to a counter-locking element 122, 222 provided on the respective charging plug 120, 220. The locking elements

[0056] 112, 212 are designed as a locking opening or locking edge into which the respective counter-locking element 122, 222, designed as a locking lug, can engage along a respective locking path. In the present case, the counter-locking elements 122, 222 are movable along the locking path by an actuation interface provided on the respective charging plug 120, 220 and designed as a button or knob, so that the respective locking mechanism 111, 211 can be directly controlled by a user on the respective charging plug 120, 220.

[0057] The illustration in Figure 4 clearly shows that the first latch 310, or the first latch 311 located in the release position, is arranged outside the locking path, so that the first locking mechanism 111 is released. If the first latch 310 is moved into the locked position, so that the first latch 312 arranged in the locked position blocks the locking path, the first counter-locking element 122 of a first charging plug 120 arranged in the first charging socket 110 cannot be released from its locking connection with the locking element 112, so that the first locking mechanism 111, or the first charging plug 120, is locked in the first charging socket 110.

[0058] Analogously, for the illustration in Figure 5, the second latch 320 or the second latch 321 located in the release position is arranged outside the locking path, so that the second locking mechanism 211 is released. If the second latch 320 is moved into the locked position, so that the second latch 322 arranged in the locked position blocks the locking path, the second counter-rust element 222 of a second charging plug 220 arranged in the second charging socket 210 cannot be released from its rusting with the locking element 212, so that the second locking mechanism 211 or the second charging plug 220 is locked in the second charging socket 210.

[0059] Accordingly, the locking of two charging interfaces 100, 200 can be enabled in a space-saving manner and by simply controlling only one drive 340 with only one actively controllable actuator 341. Figure 7 additionally shows a method for controlling a locking device 300 or a system comprising such a locking device 300, wherein the representation in Figure 7 is based on a flow chart.

[0060] Starting from a start (step A) of the method, several safety queries are carried out, in each of which a safety condition (steps B, C, D) is queried accordingly, and wherein the bolts 310, 320 are only switched to the release position (step E) if the safety conditions B, C, D are met or the bolts 310, 320 remain in the locked position (step F) if at least one of the safety conditions B, C, D is not met.

[0061] As part of the process, at least one security condition is queried, determining whether charging is taking place via the first charging interface 100 or the second charging interface 200. The additional security queries can be selected depending on the respective requirements.

[0062] The steps of the procedure are as follows:

[0063] Step A Start of the procedure

[0064] Step B Is a charging process taking place via at least one of the charging interfaces 100, 200?

[0065] No Continue to step C; Yes Continue to step F

[0066] Step C Is the vehicle locked?

[0067] No Continue to step C; Yes Continue to step F

[0068] Step D Is an authorized user within a predetermined area?

[0069] Yes Continue to step C; No Continue to step F Step E Control of the drive 340 to move the bolts 310, 320 into the release position

[0070] Step F Latches 310, 320 remain in the locked position

[0071] The start of the procedure can be triggered automatically, for example by a timer or an external signal, or by a user.

Claims

Patent claims 1 . Locking device (300) for locking two electrical charging interfaces (100, 200), wherein the locking device (300) has a first latch (310, 311, 312), a second latch (320, 321, 322) and a drive (340) operatively connected thereto, wherein the first latch (310, 311, 312) is designed to lock a first electrical charging interface (100), wherein the second latch (320, 321, 322) is designed to lock a second electrical charging interface (200), and wherein the drive (340) is designed to move the first latch (310, 311, 312) and the second latch (320, 321, 322) synchronously with one another between a respective release position, in which the respective Charging interface (100, 200) is unlocked, and a respective locking position in which the respective charging interface (100, 200) is locked.

2. Locking device according to claim 1, wherein the first bolt (310, 311, 312) and the second bolt (320, 321, 322) are connected to one another via a connecting body (330), and wherein the drive (340) is operatively connected to the first bolt (310, 311, 312) and the second bolt (320, 321, 322) via the connecting body (330) and is designed to move the two bolts (310, 311, 312, 320, 321, 322) between the release position and the blocking position by moving the connecting body (330).

3. Locking device according to claim 1 or 2, wherein the drive (340) comprises an actuator (341) and a spring element (342), wherein the actuator (341) is designed to move the first latch (310, 311, 312) and the second latch (320, 321, 322) from a basic position into an actuated position against a spring force acting through the spring element (342), and the spring element (342) and / or the actuator (341) are / is designed to move the first latch (310, 311, 312) and the second latch (320, 321, 322) from the actuated position into the basic position, wherein the basic position is the locked position and the actuated position is the released position or the basic position is the released position and the actuated position is the locked position.

4. Locking device according to one of the preceding claims, wherein the first latch (310, 311, 312) is designed as a pin extending along a first axis and / or wherein the second latch (320, 321, 322) is designed as a pin extending along a second axis.

5. Locking device according to one of the preceding claims, wherein the respective movement of the first bolt (310, 311, 312) and the second bolt (320, 321, 322) between the release position and the blocking position is a purely linear displacement.

6. System comprising a first electrical charging interface (100), a second electrical charging interface (200) and a locking device (300) according to one of the preceding claims, wherein the first charging interface (100) has a first charging socket (110) for coupling with a first charging plug (120), wherein the second charging interface (200) has a second charging socket (210) for coupling with a second charging plug (220), wherein the first charging socket (110) has a first locking mechanism (111) for releasably locking the first charging plug (120) in the first charging socket (110), wherein the second charging socket (210) has a second locking mechanism (211) for releasably locking the second charging plug (220) in the second charging socket (210), wherein the first latch (310, 311, 312) is designed to lock the first locking mechanism (111) in the locked position, so that the locking of a charging plug (120) locked in the first charging socket (110) cannot be released, and to unlock it in the release position, so that the locking of a charging plug locked in the first charging socket (110) (120) is releasable, wherein the second latch (320, 321, 322) is designed to lock the second locking mechanism (211) in the locking position,so that the locking of a charging plug (220) locked in the second charging socket (210) cannot be released, and to be unlocked in the release position so that the locking of a charging plug (220) locked in the second charging socket (210) can be released.

7. System according to the preceding claim, wherein the first locking mechanism (111) has a first locking element (112) which is designed for locking and derusting along a first locking path with a first counter-rust element (122) provided on the first charging plug (120), so that the first charging plug (120) is locked to the first charging socket (110) with the first counter-locking element (122) when the first locking element (112) becomes rusted, and the locking is released when the first locking element (112) is derusted with the first counter-rust element (122), wherein the first latch (310, 311, 312) is designed to be arranged outside the first latching path in its release position and to block the first latching path in its blocking position, so that the first latching element (112) and the first counter-latching element (122) cannot be released from a latching engagement with the first latch (310, 311, 312) in its blocking position, and the first charging interface (100) is thereby locked, and / or wherein the second locking mechanism (211) has a second latching element (212) which is designed to latch and release along a second latching path with a second counter-latch element (222) provided on the second charging plug (220),so that the second charging plug (220) is locked to the second charging socket (210) when the second locking element (212) becomes rusted by the second counter-locking element (222), and the locking is released when the second locking element (212) is derusted by the second counter-locking element (222), wherein the second latch (320, 321, 322) is designed to be arranged outside the second locking path in its release position and to block the second locking path in its locking position, so that the second locking element (212) and the second counter-locking element (222) cannot be unlocked from one another in its locking position due to rusting by the second latch (120), and the second charging interface (200) is thereby locked.

8. System according to one of the two preceding claims, wherein the first latch (310, 311, 312) is designed to lock the first locking mechanism (111) in the blocking position so that no charging plug (120) can be inserted into the first charging socket (110), and to unlock it in the release position so that a charging plug (120) can be inserted into the first charging socket (110), and / or wherein the second latch (320, 321, 322) is designed to second locking mechanism (211) in the locking position so that no charging plug (220) can be inserted into the second charging socket (210), and to unlock it in the release position so that a charging plug (220) can be inserted into the second charging socket (210).

9. System according to one of the preceding claims 6 to 8, further comprising a first cover element for covering the first charging socket (110), which is designed to correspond to the first locking mechanism (111) of the first charging socket (110), so that the first cover element can be releasably locked to the first charging socket (110) by the first locking mechanism (111), wherein the first latch (310, 311, 312) is designed to lock the first locking mechanism (111) in the locked position, so that the locking of a cover element locked to the first charging socket (110) cannot be released, and to unlock it in the release position, so that the locking of a cover element locked to the first charging socket (110) can be released, and / or further comprising a second cover element for covering the second charging socket (210), which is designed to correspond to the second locking mechanism (211) of the second charging socket (210),so that the second cover element can be releasably locked to the second charging socket (210) by the second locking mechanism (211), wherein the second latch (320, 321, 322) is designed to lock the second locking mechanism (211) in the locking position so that the locking of a cover element locked to the second charging socket (210) cannot be released, and to unlock it in the release position so that the locking of a cover element locked to the second charging socket (210) can be released.

10. System according to one of the preceding claims 6 to 9, further comprising the first charging plug (120) which can be inserted into the first charging socket (110) and / or the second charging plug (220) which can be inserted into the second charging socket (220).

11. A method for controlling a locking device (300) according to one of claims 1 to 5 or for controlling a system according to one of claims 6 to 10, wherein the drive (340) can be controlled to move the first latch (310, 311, 312) and the second latch (320, 321, 322) into a locked position by means of a locking signal and can be controlled to move the first latch (310, 311, 312) and the second latch (320, 321, 322) into a released position by means of a release signal, wherein upon receipt of a locking command, the locking signal is transmitted to the drive (340), wherein upon receipt of a release command, at least one safety condition (B, C, D) is queried, wherein a safety condition (B) is that no charging takes place via the first charging interface and via the second charging interface, and wherein the release signal is transmitted if all safety conditions (B, C, D) are met. * * * * *

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