CN-122029075-A - Charging device for motor vehicle

Abstract

The invention relates to a charging device for a motor vehicle (1) having a movable locking element (7). The locking element (7) is provided for releasably locking the charging plug (4) in the charging socket (3). Furthermore, an electric drive (8) is provided for displacing the locking element (7) at least into the "unlocked" and "locked" positions of the locking element. The locking element (7) protrudes outwards for this purpose through a seal (11) in the region of the opening (5) of the housing (9). According to the invention, the locking element (7) is equipped with a drainage device (12) axially spaced from the seal (11).

Inventors

• C. Stumm
• B. Jadovich

Assignees

• 开开特股份公司

Dates

Publication Date

20260512

Application Date

20240911

Priority Date

20231011

Claims (10)

1. 1. Charging device for a motor vehicle (1), comprising a movable locking element (7) for releasably locking a charging plug (4) in a charging socket (3) or vice versa, and an electric drive (8) for displacing the locking element (7) at least into an "unlocked" and "locked" position of the locking element, wherein the locking element (7) protrudes outwards through a seal (11) in the region of an opening of a housing (9), characterized in that the locking element (7) is provided with a drain (12) axially spaced from the seal (11).
2. 2. Device according to claim 1, characterized in that the drainage device (12) is provided with an opening (12 c) which is embedded in at least one recess (7 a) of the locking element (7) and is penetrated by the locking element (7).
3. 3. A device according to claim 2, characterized in that a plurality of axially spaced annular grooves (7 a) are provided for receiving openings (12 c) of the drainage device (12).
4. 4. A device according to any one of claims 1 to 3, characterized in that the drainage device (12) is designed as a convex arch in the locking direction (VR) of the locking element (7).
5. 5. The device according to any one of claims 1 to 4, characterized in that the drainage device (12) is made of plastic.
6. 6. Device according to claim 5, characterized in that the drainage device (12) is made of a hard plastic, in particular a thermoplastic and/or an elastomeric plastic.
7. 7. The device according to any one of claims 1 to 6, characterized in that the drainage device (12) is designed as a disk-like shape in plan view and has at least one collecting tank (12 a) for collecting, for example, water.
8. 8. Device according to claim 7, characterized in that the collecting channel (12 a) extends concentrically with the centered locking element (7), preferably into a discharge channel (12 b) which is connected radially to the collecting channel.
9. 9. Device according to any of claims 1 to 8, characterized in that the locking element (7) forms part of a locking device (7, 13) connected to the electric drive (8).
10. 10. A motor vehicle equipped with a charging device according to any one of claims 1 to 9.

Description

Charging device for motor vehicle Technical Field The invention relates to a charging device for a motor vehicle, comprising a displaceable locking element for releasably locking a charging plug in a charging socket of the charging device, or vice versa, i.e. for releasably locking the charging socket in the charging plug of the charging device, and an electric drive for displacing the locking element at least into its "unlocked" and "locked" positions, wherein the locking element protrudes outwards through a seal in the region of an opening of the housing. Background Charging devices for motor vehicles on board a motor vehicle are generally used to charge a battery or one or more accumulators on board the vehicle via a charging infrastructure. The energy storage device realized in this way is generally used for driving a corresponding motor vehicle, either alone in a purely electric motor vehicle or in combination with an additional (internal combustion engine) drive in a hybrid motor vehicle. In principle, conventional batteries or energy storage devices in general, which are not suitable for driving, can also be charged by such charging devices. For this purpose, the charging infrastructure generally uses so-called charging piles, which are equipped with cables and corresponding charging plugs. For this purpose, the charging plug is plugged into a vehicle-side charging socket. In order to prevent unauthorized disconnection of the electrical connection between the charging plug and the charging socket in the manner described above, the charging plug is releasably locked in the charging socket of the charging device. This function is achieved by a locking element that is displaced by means of an electric drive. The charging plug is removable from the charging socket when the locking element is in the "unlocked" position. In contrast, the "locked" position of the locking element corresponds to the charging plug being locked in the charging socket and the charging process being carried out. Previously, as a pre-link, it is also possible to carry out a verification of rights or a communication in general between the user to be charged and the charging pile or in general the charging infrastructure. In principle, the reverse operation is also possible. In this case, the charging peg is equipped with a charging socket, while the motor vehicle has a corresponding charging plug. In this case, too, a locking is effected between the charging socket and the charging plug in order to initiate the charging process. Since the charging sockets, which are usually located at or in the motor vehicle behind the respective charging cover plate, are exposed to environmental conditions, in particular to the attack of pollutants such as dust, rain water, etc., there is a risk of water and dust penetrating into the interior, in particular into the electric drive, via the necessary openings in the charging plug and the charging socket through which the locking element passes. For this purpose, a housing is provided on the one hand, and a seal is provided in the region of the opening or housing opening of the housing. The housing accommodates an electric drive therein. DE 20 2013 009 554 A1 discloses such a charging device as a generic prior art. In this case, the locking unit and the actuator define an associated, sealed assembly. Furthermore, a housing is provided for receiving the electric drive, which housing has a seal penetrated by the locking element. This solution has proven to be viable in principle. Furthermore, EP 3 729 566 B1 describes a locking device for a charging device of a motor vehicle, in particular a pure electric vehicle or a hybrid vehicle. In this case, a movable locking element is also provided, which serves to releasably lock the charging plug in the charging socket of the charging device. In this known technical teaching, the locking element can also be displaced beyond a "locking" position into a third "self-locking" position. The prior art has in principle proved to be viable, but there is still room for further improvement. Depending on the installation position of the housing and the electric drive located therein, although a seal is provided in the region of the housing opening of the housing, there is still the risk that water may invade the housing via the necessary opening through which the locking element passes. As does dust or other contaminants. This can affect the operation of the electric drive. In principle, in the process, it can be said that water and possibly dirt may even enter the gap between the seal and the locking element as a preceding link, resulting in the locking element (usually made of plastic) being damaged during the adjustment movement. This as a whole increases the risk of failure and may lead to permanent damage to the locking device realized in this way. This results in complex maintenance work and the motor vehicle equipped with the device is at least temporarily compl