Electric vehicle with traction battery

Abstract

The invention relates to an electric vehicle (2) having a traction battery, having a vehicle body (1) with a charging opening (3) having a charging interface (4), which can be released or closed by means of a charging cover (5). According to the invention, the electric vehicle (2) has a combined cover (13), which is configured in the form of an air-conducting element (6) and comprises the charging cover (5).

Description

Technical Field

[0001] This invention relates to an electric vehicle with a traction battery. Background Technology

[0002] Electric vehicles equipped with traction batteries are well-known. The traction battery is used to propel the electric vehicle in the form of an electric motor and requires a charging interface within the vehicle body, through which the traction battery can be charged with energy in the form of a power flow.

[0003] An electric vehicle with a charging interface is known from application DE 10 2015 113 463 A1, the charging interface being arranged in the area of ​​a mudguard for charging a traction battery, wherein the charging interface can optionally be closed or released by means of a cover element.

[0004] An electric vehicle having a front cover and a mudguard adjacent to the front cover can be found in application DE 10 2008 053 ​​973 A1, wherein the cover, which is adjustable between an open position and a closed position, is arranged between the mudguard and the front cover, and a charging interface for charging a traction battery is arranged below the cover. Summary of the Invention

[0005] The problem solved by this invention is to provide an improved electric vehicle with a traction battery.

[0006] According to the present invention, this problem is solved using an electric vehicle with a traction battery that incorporates the features of the invention. Advantageous configurations that include practical and significant further developments of the invention are specified in corresponding preferred embodiments.

[0007] An electric vehicle with a traction battery according to the invention includes a body having a charging opening with a charging interface that can be released or closed by means of a charging cover. According to the invention, the electric vehicle includes a combined cover constructed in the form of an air-conducting element and including the charging cover. In other words, the electric vehicle has a combined cover consisting of an air-conducting element and a charging cover, configured to facilitate the release of the charging interface and to function as an air-conducting element during the operation of the electric vehicle, thereby reducing flow losses and thus reducing energy consumption. Another aerodynamic and aesthetic advantage is the reduction of joints in the body that can cause turbulence and / or detract from the overall impression of the electric vehicle. Finally, with the invention, the body has a reduced number of openings, as only one opening is constructed for both the charging opening and for receiving the air-conducting element within the body.

[0008] Advantageously, the combined cover is arranged in the rear region of the vehicle body so that the output of the electric vehicle can be advantageously regulated in the rear region by means of an air conduction element.

[0009] In order to reduce flow loss over a wide operating range of the electric vehicle, preferably throughout the entire operating range, the combined cover can be moved into different positions during the operation of the electric vehicle.

[0010] The combined cover may include a charging cover and an air-conducting element that can move independently of each other. However, it is advantageous when the charging cover is configured to be easily coupled to the air-conducting element so that the charging cover can be fixedly positioned simultaneously with the air-conducting element. Thus, in a stationary state before the charging process, the air-conducting element can be coupled to the charging cover so that when the air-conducting element moves, the charging cover moves simultaneously and the charging interface can be quickly released.

[0011] If the air conduction element can move independently of the charging cover, the additional cover element for securing the charging opening during electric vehicle operation can be omitted, which can reduce the cost of the electric vehicle. If the charging cover is permanently attached to the air conduction element, such a cover element will be necessary for safety reasons, as the charging cover is designed to close the charging interface and prevent it from being affected by factors such as dirt, water, and other environmental factors.

[0012] To securely close the charging port, the charging cover can rely on the movement of the air conduction element. This means that the charging port cannot be released without movement (such as the movement of the air conduction element) and is therefore always securely closed.

[0013] Advantageously, the electric vehicle includes a drive unit configured to move the combined cover and to move the charging cover and the air conduction element together or independently. In other words, to reduce costs, a drive unit is constructed; however, the drive unit can be configured to move both the charging cover and the air conduction element.

[0014] In order to safely receive the charging cable in the charging interface, the drive unit is configured such that the combined cover fully releases the charging opening only when the electric vehicle is charging.

[0015] To further ensure the safe closure of the charging opening, the drive unit is advantageously configured such that the charging cover completely closes the charging opening during the operation of the electric vehicle. Attached Figure Description

[0016] Other advantages, features, and details of the invention will emerge from the following description of preferred embodiments and with reference to the accompanying drawings. The features and combinations of features specified in the foregoing description, and the features and combinations of features specified and / or shown separately in the following description of the drawings, can be used not only in the correspondingly indicated combinations, but also in other combinations, or individually, without departing from the scope of the invention. Similar elements or functional elements are associated with the same reference numerals. The drawings show: Figure 1 This is a partial side view of the body of an electric vehicle according to the present invention, wherein the traction battery is in a first operating state. Figure 2 This is a partial side view of the body of an electric vehicle according to the present invention, wherein the traction battery is in a second operating state. Figure 3 This is a partial side view of the body of an electric vehicle according to the present invention, wherein the traction battery is in a third operating state. Figure 4 According to Figure 3 A plan view of an electric vehicle according to the present invention. Figure 5 This is a schematic diagram of the combined cover for an electric vehicle according to the present invention. Figure 6 This is a schematic diagram of the combined cover, wherein the connecting unit is in the first connecting position. Figure 7 This is a schematic diagram of the combined cover, wherein the connecting unit is in the second connecting position, and Figure 8 This is a schematic diagram of the combined cover, wherein the connecting unit is in the third connecting position. Detailed Implementation

[0017] exist Figure 1 The image shows a partial side view of the body 1 of an electric vehicle 2 according to the invention, wherein the traction battery (not shown in more detail) is in a first operating state. The body 1 has a charging opening 3 with a charging interface 4, which can be released or closed by means of a charging cover 5. Furthermore, the body 1 has an air conduction element 6 in the region of the rear 7 of the body 1.

[0018] Preferably, the rear portion 7 is constructed in a circular manner to reduce the drag coefficient or air resistance of the vehicle body 1. However, the air conduction element 6 and its main effect (guiding airflow) are independent of the shape of the rear portion 7. The air conduction element 6 forms part of the vehicle body 1 but can move relative to the rest of the vehicle body 1.

[0019] The air conduction element 6 is configured to reduce turbulence in the airflow, which could lead to an increase in the drag coefficient. For this purpose, the air conduction element 6 can move relative to the remaining body 1, so that the portion of the body 1 without the air conduction element 6 is at least part of the rear section 8. The rear section 8 includes a flow guide surface 9 facing the surrounding environment, along which air flows and is conducted.

[0020] Air conduction element 6 at its operating end position (where it is located) Figure 2 The air guiding element 6 (described in the image) is specifically configured such that the flow guiding surface 9 extends along the longitudinal extension, and therefore specifically along the longitudinal axis X of the vehicle body 1. In other words, in addition to extending along the longitudinal axis X of the vehicle body, the air guiding element 6 also obviously extends along the transverse axis Y and the vertical axis Z of the vehicle body, thus also including flow guidance along the transverse axis Y and the vertical axis Z of the vehicle body. However, its main function is to extend the flow guiding surface 9 to guide flow along the longitudinal axis X of the vehicle body. Or, in other words, the air guiding element 6 is specifically designed in its operating end position such that the flow guiding surface 9 extends along the longitudinal axis X of the vehicle body in the direction of the rear end joint surface 10. It may also protrude above the rear end joint surface 10.

[0021] The rear portion 8 is configured to include at least part of the wheel arch 11 (Radkasten), and depending on the design of the body 1, may include at least part of the taillight opening 26 and at least part of the bumper 12.

[0022] The electric vehicle 2 according to the invention includes an air-conducting element 6 and a charging cover 5 in the form of a combined cover 13. Alternatively, in other words, the electric vehicle 2 includes a combined cover 13 configured to be in the form of an air-conducting element 6 and includes a charging cover 5. The combined cover 13 is disposed in the rear portion 8, and thus on the side wall of the vehicle body 1 in the rear region of the vehicle body 1, wherein the charging opening 3 of the electric vehicle 2 according to the invention in this embodiment is configured to be located in the rear portion 8.

[0023] Preferably, the positioning of the air-conducting element 6 is performed by means of a combination of pivoting and translational movements, wherein the drive unit of the electric vehicle 2 (not shown in more detail) is configured to facilitate this combined movement in order to move the composite cover 13. In other words, the pivoting movement of the air-conducting element 6 about a rotation axis is superimposed on the translational movement. Therefore, the fundamental advantage of the air-conducting element 6 of the composite cover 13 is that it can move from the vehicle body 1 and into different positions simultaneously in the directions of the vehicle body longitudinal axis X and the vehicle body transverse axis Y.

[0024] The drive unit is configured to allow the charging cover 5 and the air conduction element 6 to move together or independently. In order to safely receive the charging cable (not shown in more detail) in the charging interface 4, the drive unit is configured such that the combined cover 13 fully opens the opening 3 only when the electric vehicle 2 is charging. Furthermore, to further ensure the safe closure of the charging opening 3, the drive unit is configured such that the charging cover 5 fully closes the charging opening 3 while the electric vehicle 2 is in motion.

[0025] With the air-conducting element 6 positioned at the operating end, particularly at medium to high speeds of the electric vehicle 2, the charging cover 5 is closed. It should be noted that the charging cover 5 is closed even at low speeds, thus remaining closed throughout the entire operation of the electric vehicle 2. The air-conducting element 6 can be positioned in different locations during the vehicle's operation, or in other words, it can be moved to different positions. That is, in other words, the combined cover 13 (one component of which is the air-conducting element 6) can be moved to different positions during operation.

[0026] exist Figures 1 to 3 The image depicts the body 1 of the electric vehicle 2 according to the invention in different operating states, wherein according to... Figure 1 The combined cover 13 is illustrated as being in a first operating state, characterized in that the combined cover 13 is arranged flush with the rear portion 8. In other words, the charging cover 5 and the air conduction element 6 are fully arranged in the rear portion 8, as is preferably provided when the electric vehicle 2 is idling or at low speed. The charging opening 3 is fully closed, the air conduction element 6 is "retracted," and a reduced engagement pattern is formed in the rear portion 8.

[0027] exist Figure 2 The image depicts the body 1 of an electric vehicle 2 according to the invention in a second operating state, wherein the air-conducting element 6 is positioned rearward along the longitudinal axis X of the body, and thus in the direction of the rear 7. The charging cover 5 is further arranged to facilitate complete closure of the charging opening 3. This second operating state is preferably provided at high speeds of the electric vehicle 2. In other words, the air-conducting element 6 "extends" particularly within the speed range in which it exhibits aerodynamic effectiveness.

[0028] At this point, it should be mentioned that, according to the construction of the drive unit (not shown in more detail) for the combined cover 13 of the electric vehicle 2, another operating state of the vehicle body 1 can be achieved between the first operating state and the second operating state during the operation of the electric vehicle 2. In other words, the air conduction element 6 can occupy its first position (in Figure 1 (depicted in the middle) and its second position (in the middle) Figure 2The air conduction element 6 can be positioned between the first and second positions (as depicted in the diagram), where the first and second positions are boundary positions, and other positions can be assumed between these boundary positions, such as those preferably provided within the medium speed range of the electric vehicle 2. In other words, in its first position, the air conduction element 6 is arranged in its most likely position in the forward direction of the vehicle body 1, which is configured to be away from the rear 7, while in its second position, the air conduction element is positioned in its most likely position in the direction of the rear 7. The air conduction element 6 can move independently of the charging cover 5 in these operating states of the vehicle body 1.

[0029] exist Figure 3 The example illustrates the body 1 of the electric vehicle 2 according to the invention in a third operating state, wherein the air conduction element 6 and the charging cover 5 are positioned rearward along the longitudinal axis X of the body, and thus in the direction of the rear 7. The charging opening 3 is released so that the cable (not shown in more detail) can be received into the charging interface 4. This third operating state can only be achieved during the charging operation of the electric vehicle 2. Figure 4 The diagram illustrates the vehicle body 1 in this third operating state using a top-down plan view. In this third operating state, corresponding to the charging state of the electric vehicle 2, the combined cover 13 is arranged to facilitate the complete release of the charging opening 3.

[0030] As can be seen, in this embodiment, the charging cover 5 is designed to be shorter than the air conduction element 6 in the direction of the vehicle's vertical axis Z (which is configured to be orthogonal to the vehicle's longitudinal axis X and transverse axis Y), so that the cover element 14 is arranged to facilitate closing the vehicle opening 15, which preferably includes the charging opening 3, and is placed in a certain position and can be arranged immovably.

[0031] The combination cover 13 is configured to facilitate connection of the charging cover 5 to the air conduction element 6. Figure 5 The diagram illustrates a combined cover with a connecting unit 16. The charging cover 5 has a first charging cover guide 17 and a second charging cover guide 18. A first element guide 19 and a second element guide 20 are associated with an air-conducting element 6. The second charging cover guide 18 and the first element guide 19 are configured to connect the charging cover 5 and the air-conducting element 6 so that they can be coupled to perform joint movement. Therefore, the connecting unit 16 includes the second charging cover guide 18 and the first element guide 19. Thus, in the direction of the arrow, the charging cover 5 and the air-conducting element 6 can move together or separately.

[0032] exist Figures 6 to 8In the schematic diagram, a connecting unit 16 is depicted, wherein the connecting unit 16 further includes a first connecting element 21 and a second connecting element 22 in the form of a slider, the second connecting element being configured to form a form engagement with the first connecting element and being constructed in the form of a pin in this embodiment example.

[0033] In the first connection position, the second connection element 22 is positioned, by means of the first connection element 21, to engage with the third connection element 23 formed in the charging cover 5 and the fourth connection element 24 formed in the air conduction element 6. In the second connection position, the second connection element 22 is connected to the third connection element 23 and the fourth connection element 24, wherein a form-fitting connection is formed in each case. The connection with the connection slider 21 is disengaged so that, as Figure 8 As illustrated in the example, the charging cover 5 and the air conduction element 6 can slide together. Therefore, the charging cover 5 can move in reliance on the air conduction element 6.

[0034] With the aid of the actuator 25, the air conduction element 6 can be adjusted to another position.

[0035] List of reference numerals 1. Body 2 Electric vehicles 3 charging ports 4 charging ports 5 charging covers 6 air conduction elements 7 Rear 8 Rear side section 9 Flow guiding surface 10 Rear End Face 11-wheel cover 12 bumpers 13-piece set cover 14 cover components 15 Body openings 16 connection units 17 First charging cover guide 18 Second charging cover guide 19 First Element Guide 20 Second Component Guide 21 First connecting element 22 First connecting element 23 Second connecting element 24 Third connecting element 25 Actuating Elements 26 Rear Light Opening X-axis of the vehicle body Y-axis of the vehicle body Z represents the vertical axis of the vehicle body.

Claims

1. An electric vehicle (2) having a traction battery, the electric vehicle having a body (1) having a charging opening (3) with a charging interface (4) that can be released or closed by means of a charging cover (5). Its features are, The electric vehicle (2) has a combination cover (13) which is constructed in the form of an air conduction element (6) and includes the charging cover (5), wherein the air conduction element (6) is movable independently of the charging cover (5).

2. The electric vehicle according to claim 1, Its features are, The combined cover (13) is located in the rear region of the vehicle body (1).

3. The electric vehicle according to claim 1 or 2, Its features are, The combined cover (13) is arranged in the side wall (8) of the vehicle body (1).

4. The electric vehicle according to claim 1 or 2, Its features are, The combined cover (13) can move into different positions during the operation of the electric vehicle (2).

5. The electric vehicle according to claim 1 or 2, Its features are, The combined cover (13) is configured to connect the charging cover (5) to the air conduction element (6).

6. The electric vehicle according to claim 1 or 2, Its features are, The charging cover (5) can move in conjunction with the air conduction element (6).

7. The electric vehicle according to claim 1 or 2, Its features are, The combined cover (13) has a drive unit configured to move the charging cover (5) and / or the air conduction element (6).

8. The electric vehicle according to claim 7, Its features are, The drive unit is configured such that the combined cover (13) can fully release the charging opening (3) only when the electric vehicle (2) is in a charging state.

9. The electric vehicle according to claim 7, Its features are, The drive unit is configured such that the charging cover (5) can completely close the charging opening (3) during the operation of the electric vehicle (2).

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