DE102019122427A1 - Body, assembly and electric vehicle - Google Patents

Abstract

A body (12) for an electric motor vehicle (10) has a wheel arch (26, 27) and a charging socket receiving space which connects to the wheel arch (26, 27) and which extends both into the wheel arch (26, 27) and in the transverse direction (Q ) is open to the outside. An assembly (36) and an electric motor vehicle (10) are also shown.

Description

The invention relates to a body for an electric motor vehicle, an assembly for an electric motor vehicle and an electric motor vehicle.

Electric vehicles usually have an electrical energy storage device, for example a high-voltage storage device, to provide the electrical energy required to propel the electric vehicle, and a charging socket that is connected to the energy storage device via a cable so that the energy storage device can be charged using a charging plug via the charging socket .

Charging sockets are known from the prior art which are arranged in an opening in the body of the electric motor vehicle. In order to prevent moisture and / or liquids from penetrating, these charging sockets are sealed both at the passage opening to the outer body skin and at the opening to the inner body skin. The assembly is therefore carried out according to a wet-dry-wet concept on the body of the electric vehicle.

This solution, however, leads to a great assembly effort, since the charging socket has to be sealed on two levels, and a great amount of safeguarding to ensure that the seal between the outer and inner skin of the body is also tight.

It is therefore the object of the invention to provide a body, an assembly and an electric motor vehicle, which allow a simplified assembly of the charging socket.

According to the invention, this is achieved by a body for an electric motor vehicle which has a wheel arch and a charging socket receiving space. The charging socket receiving space is open both in the wheel arch and in the transverse direction to the outside.

The invention is based on the basic idea of designing the body in such a way that a charging socket receiving space is created in the area of the wheel arch. This charging socket receiving space is designed to accommodate a charging socket for charging the energy storage device of the electric motor vehicle. In particular, the charging socket receiving space avoids a breakthrough to the dry area of the body, so that the charging socket can be mounted on the body with less effort.

In other words, the body is bulged, for example, so that there is enough space for the charging socket.

The bulge can be arranged directly on the wheel arch or in the area of a luggage storage area of the electric motor vehicle.

The transverse direction of the body is understood to mean the transverse direction of the finished electric motor vehicle.

Furthermore, an electric motor vehicle is understood to mean a motor vehicle that has an electrical energy store that is connected to an electric motor used to drive the electric motor vehicle. The energy storage device is charged via a charging socket on the electric vehicle.

For example, the electric motor vehicle is a purely electrically driven motor vehicle or a hybrid electric motor vehicle.

The purely electrically driven motor vehicle can additionally have a fuel cell and a fuel cell tank, so that electrical energy is provided both by the energy store and by the fuel cell.

One aspect of the invention provides that the charging socket receiving space is part of the wet area of the body. The charging socket is accordingly attached in the wet area of the body and only the electrical contacts of the charging socket need to be sealed. Both sealing levels of the known assembly concept are thus omitted.

The wet area of the body is also known as the wet area, i.e. the area of the body that is in direct contact with the surroundings of the electric vehicle.

For example, the body has a battery box, in particular on an underbody of the body, which has an electrical contact point on an outside of the battery box and is designed to accommodate a high-voltage storage device. The electrical contact point is therefore also arranged in the wet area of the body, which enables simple electrical contacting of the charging socket and high-voltage storage device.

The high-voltage battery is connected to the charging socket via the electrical contact point using a cable so that the high-voltage battery can be charged.

The body can have at least one cable mounting point, so that a cable routing from the charging socket receiving space to the electrical contact point of the battery box is defined, the cable routing completely in the Wet area of the body is arranged. The cable routing can accordingly be laid along the body, so that further openings through the body are avoided and the installation effort for the charging socket is simplified.

It can be provided that the charging socket receiving space is arranged on a rear wheel arch. This enables convenient charging of the high-voltage battery.

For example, the body has a corresponding charging socket space on opposite sides, in particular on opposite sides on both rear wheel arches. In this way, the charging socket can be positioned on the left and / or right side of the body, so that only one body is necessary for different markets (right / left-hand traffic).

The object of the invention is also achieved by an assembly for an electric motor vehicle, the assembly having a previously described body and a charging socket. The charging socket is arranged in the charging socket receiving space and has a charging coupling for receiving a charging plug. The advantages already explained for the body according to the invention result and vice versa.

The assembly may have a body attachment and a loading flap. The body attachment part is attached to the body in such a way that the charging socket receiving space is partially closed off by the body attachment part and forms a charging socket cavity which has two openings. The loading flap is attached to the body attachment and can be moved between an open and a closed position, and in the closed position it seals the electrical charging coupling and / or one of the openings. The charging socket cavity simplifies the assembly process of the charging socket, since the rear of the charging socket is still accessible in the assembled state and the charging socket can thus be contacted with the high-voltage storage unit via a cable in the assembled state.

The body attachment is in particular attached directly to the body or via a guide to the body.

In one embodiment of the invention, the charging socket cavity has a first opening which opens into the wheel arch and a second opening which opens outward in the transverse direction. In this way, the high-voltage battery can be contacted directly and only comparatively short cables are necessary.

The first and the second opening are formed separately from one another. A first opening is thus provided for inserting a charging plug and a second opening via which the electrical contact to the high-voltage storage device is made.

For example, the loading flap seals the second opening of the socket cavity, that is to say the opening through which the charging plug is inserted into the electrical charging coupling of the charging socket.

In one embodiment of the invention, the charging socket in the installed position has an angle to the vertical between 10 ° and 50 °, in particular in the range from 30 ° to 40 °. This allows a convenient insertion of a charging plug into the charging coupling of the charging socket.

In order to enable the charging coupling to be contacted from the outside of the electric motor vehicle, the add-on body part can be a trim component.

For example, the body attachment is a bumper, preferably a rear bumper.

The front bumper is also known as the front cladding or front apron and the rear bumper as the rear cladding or rear apron.

The charging socket can be arranged in a side area of the rear bumper. The insertion of the charging plug is accordingly simplified, since the charging socket can be contacted both via the side and via the rear of the electric motor vehicle.

In one embodiment of the invention, the assembly has a guide by means of which the body attachment is fastened to the body, the charging socket being attached to the guide, the body and / or the body attachment. The guidance ensures precise positioning of the body attachment on the body.

It can be provided that the charging socket has a holder, the charging socket being fastened by means of the holder. In this way, the charging socket can be easily inserted after the body attachment part has been installed on the body.

For example, the holder has a predetermined breaking point, so that damage to the body attachment part and / or the body of the vehicle is prevented when a high force is exerted on the charging socket.

The object of the invention is also achieved by an electric motor vehicle with an assembly described above. The features and advantages already listed with regard to the assembly according to the invention result.

In one embodiment of the invention, the center of the charging socket is arranged at a height between 650 mm and 950 mm of the electric motor vehicle, in particular in a range between 750 mm and 850 mm. In this way, a convenient attachment of the charging plug is made possible for a user of the motor vehicle.

In order to ensure good visibility of the charging socket, the motor vehicle can have a rear light which partially extends to one side of the vehicle. The charging socket is arranged on the vehicle side below the rear light.

• - 1 eine Seitenansicht eines erfindungsgemäßen Elektrokraftfahrtzeugs mit einer erfindungsgemäßen Karosserie und einer erfindungsgemäßen Baugruppe in einer ersten Ausführungsform,
• - 2 eine perspektivische Seitenansicht einer erfindungsgemäßen Baugruppe der 1,
• - 3 eine Ansicht von unten auf eine erfindungsgemäße Baugruppe der 1 und 2,
• - 4 eine Querschnittsansicht durch die erfindungsgemäße Baugruppe entlang der Schnittlinie IV-IV der 1,
• - 5 eine perspektivische Ansicht von unten auf die erfindungsgemäße Karosserie der 1 bis 4 im Bereich eines hinteren Radkastens,
• - 6 eine perspektivische Seitenansicht einer Führung der erfindungsgemäßen Baugruppe der 3 und 4,
• - 7 eine Seitenansicht eines hinteren Stoßfängers der erfindungsgemäßen Baugruppe der 1 bis 4,
• - 8 eine Seitansicht einer Ladedose der erfindungsgemäßen Baugruppe,
• - 9 eine Seitenansicht einer direkten Befestigung der Ladedose an der erfindungsgemäßen Karosserie, und
• - 10 eine Ansicht von unten auf eine erfindungsgemäße Baugruppe in einer zweiten Ausführungsform.

Further features and advantages of the invention emerge from the following description and from the attached drawings, to which reference is made below. In the drawings show:

• - 1 a side view of an electric motor vehicle according to the invention with a body according to the invention and an assembly according to the invention in a first embodiment,
• - 2 a perspective side view of an assembly according to the invention of 1 ,
• - 3 a view from below of an assembly according to the invention of 1 and 2 ,
• - 4th a cross-sectional view through the assembly according to the invention along the section line IV-IV of 1 ,
• - 5 a perspective view from below of the inventive body 1 to 4th in the area of a rear wheel arch,
• - 6th a perspective side view of a guide of the assembly of the invention 3 and 4th ,
• - 7th a side view of a rear bumper of the inventive assembly of 1 to 4th ,
• - 8th a side view of a charging socket of the assembly according to the invention,
• - 9 a side view of a direct attachment of the charging socket to the body according to the invention, and
• - 10 a view from below of an assembly according to the invention in a second embodiment.

The 1 Figure 3 shows a side view of an electric motor vehicle 10 .

The following is the position and orientation of the components of the electric vehicle 10 with regard to their installation position on the electric motor vehicle 10 specified. For a better understanding, the coordinate system of the installation position is indicated in the figures. The coordinate system has, as in 1 shown, three axes, namely the longitudinal direction L, the transverse direction Q and the vertical V, those of the longitudinal direction, the transverse direction and the vertical direction of the electric motor vehicle 10 correspond. The transverse direction Q shows in the 1 out of the drawing plane.

The electric vehicle 10 has, as in 1 shown a body 12 and several on the body 12 attached bodywork components 14th .

The body 12 is the supporting structure of the electric vehicle 10 and has a total of four wheel arches 26th on. The bodywork components 14th are on the body directly or via a bracket 12 attached.

In the embodiment of 1 are the body parts 14th a front bumper 16 , a hood 18th , a side skirt 20th , two vehicle doors 22nd and a rear bumper 24 . The bodywork components 14th provide trim components of the electric vehicle, for example 10 represent.

The electric vehicle 10 is electrically powered and has a high-voltage storage device to provide the energy required for propulsion 28 . Because the high-voltage storage 28 in the side view of the 1 is not visible, it is shown in dashed lines.

The high-voltage storage 28 is on the one hand with an electric motor, not shown, of the electric motor vehicle 10 connected and the other via cable 30th with a charging socket 32 . Via the charging socket 32 and the cables 30th can the high-voltage storage 28 can be charged with an appropriate charging plug.

In the side view of the 1 is the charging socket 32 through a loading flap 34 covered so that the charging socket 32 is indicated by dashed lines.

The tailgate 34 is on the rear bumper 24 , i.e. on the body part 14th , pivotally mounted and between an open position ( 7th ) and a closed position ( 1 ) pivotable.

In the exemplary embodiment shown, there is also a guide 58 intended.

The body 12 , the rear bumper 24 , the charging socket 32 , the leadership 58 and the loading flap 34 together form an assembly 36 , in the 1 is shown in a first embodiment.

The electric vehicle 10 also has a rear light 38 which partly relate to the in 1 Vehicle side shown extends. The charging socket 32 is on the in 1 shown vehicle side of the electric vehicle 10 below the rear light 38 in the area of a rear wheel arch 27 arranged.

There is also the charging socket 32 at a height H of the electric motor vehicle 10 . For example, the height H is between 650 mm and 950 mm.

More precisely, it is the center of the charging socket 32 arranged at height H.

The height H is the distance between the charging socket 32 to a plane E along which the electric vehicle is located 10 emotional.

The 2 shows the assembly 36 in perspective side view from diagonally behind in the rear wheel arch 27 the body 12 inside.

It can be seen that the body 12 a battery box at the bottom 40 having the high-voltage storage 28 records.

The battery box 40 has electrical contact points on the outside 42 that are electric with the high-voltage battery 28 are connected and as electrical connection points to the cables 30th to serve.

For example, the cables are 30th electrically with the contact points via a plug connection 42 connected.

As in 2 can be seen is on the battery box 40 also a cable support point 44 provided of the cables 30th on the body 12 attached.

Via the cable retention point 44 becomes a cable guide 45 from the charging socket 32 to the electrical contact points 42 of the battery box 40 realized that on the inside of the wheel arch 26th runs. The cables 30th or the cable routing 45 run completely in the wet area of the body 12 .

Based on 3 to 8th the following is the assembly 36 explained in detail. They show 3 and 4th the assembly 36 put together in a perspective view ( 3 ) and in a sectional view ( 4th ). The 5 to 8th then make the individual components of the assembly 36 represent, so part of the body 12 ( 4th ), the leadership 58 ( 6th ), the body attachment 14th with the loading flap 34 ( 7th ) and finally the charging socket 32 ( 8th ).

Like in the 3 seen is the rear bumper 24 shaped in such a way that it extends in the longitudinal direction L the rear area of the rear wheel arch 27 forms. The 3 shows the assembled assembly 36 in a perspective view from below of the rear wheel arch 27 .

The rear bumper 24 is at attachment points 60 on the leadership 58 (detachable) attached and attached to the guide 58 is a bracket 64 provided through which the charging socket 32 on the leadership 58 is attached.

For example is the charging socket 32 in the holder 64 clipped in.

By means of guidance 58 are then the charging socket 32 and the body attachment 14th on the body 12 assembled.

The charging socket 32 is in a socket receiving space 46 the body 12 arranged.

The socket receptacle 46 adjoins the rear wheel arch against the longitudinal direction L. 27 and appears as an essentially U-shaped bulge (see also 5 ) in the body 12 executed.

The socket receptacle 46 is on the one hand, as indicated by the arrow 48 shown, in the direction of the wheel arch 26th open and on the other hand in the transverse direction Q outwards.

However, it is the socket receiving space 46 in the transverse direction Q to the outside partially through the body attachment part 14th completed.

More precisely, it is the body attachment 14th by means of the guide 58 attached to the body in such a way that a socket cavity 72 is formed of two openings 74 , 76 having.

The first opening is in 3 can be seen and ends in the rear wheel arch 27 as by the arrow 48 indicated.

The second opening 76 is through a through opening 66 of the rear bumper 24 formed (cf. 4th ) and runs in the transverse direction Q outwards.

Also is in the rear wheel arch 27 another cable retention point 44 intended. The cable routing 45 so runs from the outside of the battery box 40 ( 2 ) over the inside of the rear wheel arch 27 into the first opening of the socket cavity 72 inside.

In the socket cavity 72 are the cables then with that of the charging socket 32 contacted. The charging socket 32 is therefore a socket cavity 72 arranged.

More precisely, a cover pot extends 56 ( 8th ) of the charging socket 32 from the outside of the body attachment 14th in the socket receptacle 46 inside.

4th FIG. 4 shows a sectional view in the transverse direction Q along the section line IV-IV of FIG 1 , i.e. in the area of the second opening 76 .

About the arrangement of the charging socket 32 on the body 12 to clarify is a coupling level 33 for a charging plug on the charging socket 32 drawn.

The coupling level 33 has an angle α to the vertical V. In the embodiment of 8th the angle α is approximately 30 °. In general, an angle α in the range from 10 ° to 50 ° is conceivable.

In other words is the charging socket 32 at the angle α on the body 12 of the electric vehicle 10 arranged.

5 shows the socket receptacle 46 the body 12 in detail in a perspective view from below of the body 12 in the area of the rear wheel arch 27 .

The socket receptacle 46 is through three side walls 47 limited. Two of the side walls 47 delimit the socket receiving space 46 especially in and against the longitudinal direction L and a side wall 47 delimits the charging socket receiving space opposite to the transverse direction Q, i.e. inwards in the transverse direction. As a result, the charging socket receiving space is open both in the transverse direction Q to the outside and, above all, in the direction of the vertical V. This is indicated by the arrows in the 5 shown.

In particular, is the charging socket receiving space 46 in the wheel arch 26th opened in, as by the arrow 48 shown. The socket receptacle 46 is therefore also part of the wet area of the body 12 .

Furthermore shows 6th the attachment of the charging socket 32 on the body 12 in a side view.

The assembly 36 the leadership 58 on. The leadership 58 is separate from the body 12 and designed as an approximately L-shaped extension. In the assembled state, the guide 58 from the body attachment 14th covered.

For example, leadership 58 on the inside of the rear wheel arch 27 attached.

The leadership 58 has a total of seven attachment points 60 on which the body attachment 14th can be attached.

In the embodiment of 6th are the attachment point 60 Holes so that the body attachment 14th for example via a screw-nut connection and / or a rivet connection on the guide 58 can be attached.

The leadership 58 also has a recess 62 in which the bracket 64 is attached. Using the bracket 64 is the charging socket 32 on the leadership 58 attached.

7th shows part of the rear bumper 24 in a side view, with the loading flap 34 is shown in an open position.

The body attachment 14th has a through opening 66 on. At the in 7th left side of the passage opening 66 is the loading flap 34 pivotable about a pivot axis 68 attached.

There are the loading flap 34 and the through hole 66 like that on the rear bumper 24 arranged that the charging socket 32 in the installation position of the body attachment 14th ( 1 ) aligned with the through opening 66 is arranged and that the loading flap 34 the charging socket 32 seals in the closed position.

The passage opening 66 thus forms the second opening 76 of the socket cavity 74 ( 4th ) and the loading flap 34 closes the passage opening 66 and with it the second opening 76 in the closed position.

More precisely, the loading flap seals 34 the charging coupling 50 the charging socket 32 from. The loading flap has for this purpose 34 on the inside, ie the side of the tailgate 34 that the charging socket 32 in the closed position of the loading flap 34 opposite, a sealing contour 70 made of rubber.

The 8th shows the charging socket 32 in detail in a side view.

The charging socket 32 has a charging coupling in the embodiment shown 50 that have both DC power connections 52 as well as AC connections 54 Has. The charging socket 32 is therefore a charging socket 32 a combined charging system.

In general, every charging coupling is 50 for the charging socket 32 conceivable.

The electric charging connector 50 is in the cover pot 56 the charging socket 32 arranged and designed to receive a charging plug.

The cover pot 56 surrounds the charging coupling 50 (see also 3 ) and protects the electrical lines of the charging coupling 50 . The charging coupling 50 will, as in 3 shown on a rear side of the cover pot 56 with the cables 30th electrically connected.

By the electric vehicle 10 , the assembly 36 and the body 12 becomes the assembly process of the charging socket 32 significantly simplified. The charging socket 32 is in the wet area of the body 12 arranged and the cables 30th are accordingly also on the outside of the body 12 relocated.

In particular, a body opening is avoided, so that only the charging socket 32 even in the area of the electric charging connector 50 must be sealed.

In the embodiment described above, it is shown that the charging socket 32 about the bracket 64 on the leadership 58 of the assembly 36 is attached. The 9 shows a side view of another possibility, the charging socket 32 to fix.

In this embodiment the bracket 64 the charging socket 32 directly on the body 12 attached.

Also shows the 9 a predetermined breaking point 78 on the bracket 64 . The predetermined breaking point 78 has a lower breaking strength than the body 12 and as the lead 58 of the assembly 36 so that with a corresponding one, on the charging socket 32 acting force the bracket 64 at the predetermined breaking point 78 breaks and not the body 12 or the leadership 58 .

10 shows a second embodiment of the assembly 36 without the guide 58 and without the body attachment 14th in a view from below of the assembly in the area of the rear wheel arch 27 . The embodiment corresponds essentially to the first embodiment of the assembly 36 so that only the differences are discussed below. Identical and functionally identical parts are provided with the same reference symbols.

The difference to the first embodiment is the charging socket receiving space 46 in 10 not directly on the wheel arch 26th , 27 arranged, but opposite to the longitudinal direction L to the rear, in the direction of the rear of the body 12 offset.

More precisely, it is the socket receiving space 46 in the area of a baggage reception area 80 of the electric vehicle 10 arranged and even in the direction of the wheel arch 26th (Arrow 48 ) and open to the outside in the transverse direction Q.

It goes without saying that the embodiments shown are only to be understood as examples.

In particular, it is conceivable that the assembly 36 two charging sockets 32 has on opposite sides of the vehicle in the area of the rear wheel arches 27 are arranged.

Furthermore, the charging socket was used in the exemplary embodiments 32 each with a bracket 64 on the leadership 58 or the body 12 attached.

It goes without saying that the charging socket 32 also about the bracket 64 on the body attachment 14th can be attached or that the charging socket 32 also directly, ie without a bracket 64 , on the body 12 , the body attachment 14th and / or leadership 58 can be attached.

For example, the cover pot 56 for this purpose, have appropriate fastening devices on the outside.

It is also conceivable that this is the loading flap 34 a corresponding sealing contour 70 has to the second opening 76 and / or the electrical charging coupling 50 to seal.

Claims (15)

Body for an electric motor vehicle, with a wheel arch (26, 27) and a charging socket receiving space (46) which adjoins the wheel arch (26, 27) and which both in the wheel arch (26, 27) and in the transverse direction (Q) to the outside is open. Body after Claim 1 , characterized in that the charging socket receiving space (46) is part of the wet area of the body (12). Body after Claim 1 or 2 , characterized in that the body (12) has a battery box (40), in particular on an underbody of the body (12), which has an electrical contact point (42) on an outside of the battery box (40) and is designed to be a high-voltage storage device (28). Body according to one of the preceding claims, characterized in that the body (12) has at least one cable mounting point (44), so that a cable guide (45) is defined from the charging socket receiving space (46) to the electrical contact point (42) of the battery box (40), wherein the cable guide (45) is arranged completely in the wet area of the body (12). Body according to one of the preceding claims, characterized in that the charging socket receiving space (46) is arranged on a rear wheel housing (27). Assembly for an electric motor vehicle, with a body (12) according to one of the preceding claims and a charging socket (32), the charging socket (32) being arranged in the charging socket receiving space (46) and having a charging coupling (50) for receiving a charging plug. Assembly according to Claim 6 , characterized in that the assembly (36) has a body attachment part (14) and a loading flap (34), the body attachment part (14) being fastened to the body (12) in such a way that the charging socket receiving space (46) through the body attachment part (14 ) is partially enclosed and forms a socket cavity (72) having two openings (74,76) and wherein the loading flap (34) is attached to the body attachment (14) and is movable between an open and a closed position, and in the closed position Position the charging coupling (50) and / or one of the openings (74, 76) seals. Assembly according to Claim 6 or 7th , characterized in that the charging socket cavity (72) has a first opening (74) which opens into the wheel arch (26, 27), and a second opening (76) which opens outwards in the transverse direction (Q). Assembly according to one of the Claims 6 to 8th , characterized in that the charging socket (32) in the installation position has an angle (a) to the vertical (V) between 10 ° and 50 °, in particular in the range from 30 ° to 40 °. Assembly according to one of the Claims 6 to 9 , characterized in that the body attachment (14) is a trim component, in particular a bumper (16, 24), preferably a rear bumper (24). Assembly according to one of the Claims 6 to 10 , characterized in that the assembly (36) has a guide (58) by means of which the body attachment part (14) is fastened to the body (12), the charging socket (32) on the guide (58), the body (12 ) and / or the body attachment part (14) is attached. Assembly according to one of the Claims 6 to 11 , characterized in that the charging socket (32) has a holder (64), the charging socket (32) being fastened by means of the holder (64), in particular wherein the holder (64) has a predetermined breaking point (78). Electric motor vehicle with an assembly (36) according to one of the Claims 6 to 12 . Electric vehicle according to Claim 13 , characterized in that the center point of the charging socket (32) is arranged at a height (H) between 650 mm and 950 mm of the electric motor vehicle (10), in particular in a range between 750 mm and 850 mm. Electric vehicle according to Claim 13 or 14th , characterized in that the electric motor vehicle (10) has a rear light (38) which partially extends to one side of the vehicle, the charging socket (32) being arranged on the vehicle side below the rear light (38).

Images