WO2022238165A1

WO2022238165A1 - Mobile charging apparatus, and method for assembly thereof

Info

Publication number: WO2022238165A1
Application number: PCT/EP2022/061731
Authority: WO
Inventors: Michael Bozenhardt
Original assignee: Juice Technology AG
Priority date: 2021-05-12
Filing date: 2022-05-02
Publication date: 2022-11-17
Also published as: DE102021112424A1

Abstract

The invention relates to a mobile charging apparatus (2), comprising a load regulation device (6) with a housing (20) which has an access opening (24), and with a cover (26) which closes the access opening (24). A first joining surface of the housing (20) and a second joining surface of the cover (26) delimit a cavity which extends at least in part around the access opening (24) and is filled with an adhesive that sealingly interconnects the cover (26) and the housing (20). The invention also relates to a corresponding method for assembling a charging apparatus (2), the method comprising joining the cover (26) to the housing (20) and filling the cavity with the adhesive.

Description

Mobile charging device and method of assembling same

The present invention relates to a mobile charging device for charging electric vehicles and a method for installing such a charging device.

The market for electrically powered motor vehicles (Battery Electric Vehicles; BEV) has been growing rapidly for several years. There are currently more than five million electric cars in operation worldwide. In order to be able to charge the energy storage device of an electric car with electricity as quickly and flexibly as possible, it is necessary to be able to connect the charging connection of the electric car to a large number of different connection options in the energy supply network. Permanently installed charging stations (charging columns, wall boxes) and mobile charging devices are available for this purpose, whereby the latter can be carried along in the electric vehicle itself and, together with the appropriate adapters, maximize flexibility.

Such mobile charging devices must work reliably even in adverse weather conditions, should be light and yet robust, be able to be connected to a large number of different technical mains connections and meet the legally prescribed standards with regard to safe operation.

Known mobile charging devices still have a relatively large volume and weight and are sometimes complicated to assemble.

It is therefore an object of the present invention to provide an improved mobile charging device that at least partially overcomes the above-mentioned disadvantages and has a reduced volume and weight compared to the prior art, as well as providing a simple and inexpensive method for its assembly.

This object is solved by the subject matter of independent claims 1 and 10. Advantageous refinements and embodiments are the subject matter of the dependent claims.

A mobile charging device according to the invention for charging an electric vehicle, in particular an electric car, includes a charging control device for controlling para- 2 meters for charging an accumulator of the electric vehicle, a mains-side connection for connecting the charging control device to a mains power supply and a consumer-side connection for connecting the charging control device to the electric vehicle. The charging control device comprises a housing in which the power and/or control electronics of the mobile charging device are accommodated and which has at least one first access opening. Furthermore, the charging control device includes a first cover which closes the first access opening. The housing has a first mating surface and the first cover has a second mating surface facing each other and extending around the first access opening. The first and second mating surfaces together define a cavity that extends at least partially around the first access opening and is filled with an adhesive that sealingly bonds the first cover and the housing together.

In this way, a mobile charging device is provided in which the Ge housing and the first cover can be made thin-walled due to their adhesion, which saves installation space and reduces the weight of the charging device. Threads for screwing the housing and the first cover, which require an increased wall thickness, are not required. As a result, during the assembly of the loading device, a corresponding screwing process with a precisely adjusted and monitored predetermined torque is still eliminated. A space-saving design and simple assembly are also favored by the fact that no additional sealing elements or sealing processes are necessary due to the sealing adhesive.

A preferred adhesive is, for example, a 2-component construction adhesive based on acrylate or polyurethane. This is a stable (non-sag) adhesive and therefore does not flow out of an opening on its own, similar to toothpaste, has an extremely high temperature range of approx. -40°C to approx. 150°C and high tensile shear strength on aluminum and plastic .

The adhesive has particularly good adhesive and sealing characteristics if it is selected from a group that includes: construction adhesive based on acrylate or polyurethane. 3

The dimension of the cavity includes a gap dimension between the first and the second joining surface, which is preferably between 0.1 mm and 1.0 mm, more preferably between 0.2 mm and 0.8 mm, even more preferably between 0.4 mm and is 0.6 mm.

The housing preferably has an outer diameter that is between 30 mm and 70 mm, more preferably between 40 mm and 60 mm, even more preferably between 50 mm and 55 mm. A length of the housing in its longitudinal direction is preferably between 120 mm and 250 mm, more preferably between 180 mm and 220 mm, even more preferably between 213 mm and 215 mm.

The housing is preferably formed from metal, in particular from an aluminum alloy such as EN AW-6063 or EN AW-6082. The housing can B. be extruded.

The first cover is preferably made of plastic, in particular polycarbonate (PC), polyvinyl chloride (PVC) or acrylonitrile butadiene styrene (ABS).

The housing can also have a second access opening, with the charging control device then preferably comprising a second cover which closes the second access opening. For example, the housing is substantially cylindrical in shape and has the first access opening on a first end and the second access opening on a second end. The second access opening and the second cover are preferably designed analogously to the first access opening and the first cover. All of the features described herein with regard to the first access opening and the first cover can therefore be transferred analogously to the second access opening and the second cover.

The housing and the first cover can have a shape that is at least partially and preferably completely rotationally symmetrical. The housing and the first cover are preferably rotationally symmetrical, in particular cylindrical, at least in the region of the first and second joining surface.

In a preferred embodiment, the housing includes a collar or flange surrounding and thereby defining the first access opening and which defines the first mating surface 4 has. The first cover then has a corresponding collar or flange, which has the second joining surface.

The housing and the first cover preferably form a lap joint with a defined overlap length before. The overlap length is preferably between 5 mm and 15 mm, more preferably between 8 mm and 12 mm, even more 10 mm.

For this purpose, the first and the second joining surface can be sections of a peripheral surface of the housing or of the first cover. Preferably, the first joining surface is an inner peripheral surface of the case surrounding the first access opening, and the second joining surface is an outer peripheral surface of a (joining) portion of the first cover inserted into the first access opening. However, it is also conceivable that the first joining surface is an outer circumferential or lateral surface of a section of the housing in the area of the first access opening and the second joining surface is an inner circumferential surface of the first cover, the housing being partially inserted into the first cover .

The first and the second joining surface can additionally or alternatively also include end faces of the housing or the first cover and thus run in sections radially to an axis to which the first access opening is preferably formed rotationally symmetrically.

The cavity preferably completely surrounds the first access opening. In other words, the cavity is continuously formed around the first access opening to provide a continuous connection and seal between the first and second mating surfaces. Alternatively, the first and the second joining surface can also delimit a plurality of cavities, each of which runs partially around the first access opening and each is filled with an adhesive. It is then desirable for the plurality of cavities to surround the first access opening as completely as possible in order to enable the first cover to be connected firmly and tightly to the housing.

In a preferred embodiment, at least one of the first and second joining surfaces has a groove for forming the cavity between the first and second joining surfaces. The groove preferably completely surrounds the first access opening, that is to say it is formed circumferentially in the first and/or second joining surface. Through the groove, the hollow 5 space can be dimensioned and formed reliably and precisely. A depth of the groove relative to the surface of the housing or the cover into which it is introduced preferably corresponds to the gap dimension of the cavity. A width of the groove is preferably between 2 mm and 14 mm, more preferably between 6 mm and 10 mm, even more preferably 8 mm. The goal is to get as much adhesive surface as possible.

In the areas adjoining the groove, the first and second joining surfaces can rest against one another and in this way form a contact or sealing area between the housing and the first cover.

Due to the adhesive connection between the housing and the first cover and the elimination of threads made possible by this, the wall thicknesses of the housing and the first cover can be selected to be small. In the region of the first joining surface, the housing preferably has a wall thickness of between 1 mm and 3 mm, more preferably between 1.2 mm and 2.5 mm, even more preferably 1.5 mm. In the region of the second joining surface, the first cover preferably has a wall thickness between

1.5 mm and 4 mm, more preferably between 2.0 mm and 3.0 mm, even more preferred

is 2.5 mm.

A particularly simple assembly of the charging device can be accomplished if at least one of the first and second joining surfaces has at least one filling opening for filling the adhesive into the cavity and at least one of the first and second joining surfaces has at least one ventilation opening for discharging air from the cavity. wherein the at least one fill port and the at least one vent port each provide fluid communication with the cavity. In particular, the at least one filling opening and the at least one ventilation opening open out into the respective first and second joining surfaces of the shaped cavity. A plurality of filling and/or venting openings can also be provided.

Where the first access opening is formed about a central axis, the fill opening and the vent opening are preferably radial to the central axis.

The adhesive can be filled, in particular injected, through the filling opening into the cavity after the housing and the first cover have been joined together. The filling 6 tion therefore preferably runs from an outside of the charge control device through the first cover or the housing to the cavity. It goes without saying that the filling opening in the various embodiments is formed in each case in the component comprising the housing and the first cover, through which access from the outside to the cavity is possible, please include.

When the adhesive is filled into the cavity, it displaces air from the cavity, which is discharged through the ventilation opening. The vent opening preferably runs from an outside or an inside of the charge control device through the first cover or the housing to the cavity. It is understood that in the various embodiments the ventilation opening is formed in the component comprising the housing and the first cover, through which access from the outside or the inside to the cavity is possible.

If the ventilation opening runs from the outside of the charge control device to the cavity, this has the advantage that contamination or damage to the power and control electronics inside the housing due to escaping adhesive can be avoided. In addition, the ventilation opening can be arranged relative to the filling opening in such a way that if the adhesive escapes from the ventilation opening and is visible from the outside, this indicates that the cavity is completely filled with adhesive.

A plurality of filling openings and/or ventilation openings can be provided in particular when the first and second joining surfaces form a plurality of cavities. At least one filling opening and at least one ventilation opening are then provided for each cavity.

The filling opening preferably has a diameter which is between 1 mm and 3 mm, more preferably 2 mm.

The vent opening preferably has a diameter that is between 0.5 mm and 1.5 mm, more preferably 1 mm.

The diameter of the filling opening is preferably larger than the diameter of the ventilation opening. 7

In a preferred embodiment, the first and second joining surfaces are non-positively connected to one another in a contact area. The non-positive connection is brought about in particular by a press fit between the first joining surface of the housing and the second joining surface of the first cover. For example, the first cover is partially pressed into the housing, in particular into the first access opening, or vice versa. It is preferable that the housing and the first cover are connected to each other solely by the press-fitting and the adhesive. A threaded connection that is difficult to produce can then be dispensed with.

The charging control device is provided for controlling charging parameters. The charging control device is set up to regulate a charging current for charging the accumulator of the electric vehicle and/or to monitor, start and/or end a charging process for charging the accumulator of the electric vehicle. For this purpose, the charging control device includes corresponding power and/or control electronics of the mobile charging device. The power and/or control electronics can include a control unit that can receive and process signals from the electric vehicle, from the consumer-side and from the mains-side connection, as well as the power-generating elements that are decisive for charging.

It is also preferred that the housing has a display and at least one control element. The display and the at least one operating element are set up to display information about the charging process (eg a set current) and to allow user input. The display and the at least one operating element are preferably connected in a communicating manner to the power and control electronics, in particular to the control unit.

Finally, the charging device preferably comprises a first charging cable, which connects the charging control device to the grid-side connection, and a second charging cable, which connects the charging control device to the consumer-side connection. The first cover then preferably has a through-opening through which an electrical line of the first or second charging cable is routed into the housing, where it is connected to the power and control electronics of the charging device. If a second cover is provided, an electrical line of the other from the first and second charging cable can be 8 accordingly be guided through a passage opening in the second cover into the housing, where it is connected to the power and control electronics of the charging device. The passage opening of the first and possibly the second cover is sealed against the respective charging cable.

A method according to the invention for installing a mobile charging device for charging an electric vehicle comprises the following steps:

Joining a first cover to a housing of a charging control device of the mobile charging device such that the first cover closes a first access opening of the housing;

filling an adhesive into a cavity through a fill port, the cavity being formed between a first mating surface of the housing and a second mating surface of the first lid and extending at least partially around the first access port, the fill port providing fluid communication with the cavity; displacing air from the cavity by filling the adhesive into the cavity, the air escaping the cavity through a vent opening providing fluid communication with the cavity; and

Forming a solid and tight connection between the housing and the first cover by the adhesive.

In this way, a method for assembling a mobile charging device is provided, in which the housing and the first cover can be made thin-walled due to their adhesion, whereby space is saved and the weight of the charging device can be reduced. Threads for screwing the housing and the first cover, which require an increased wall thickness, are not required. As a result, during assembly of the loading device, there is still no need for a corresponding screwing process with a predetermined torque that has to be set and monitored precisely. A space-saving design and simple assembly are also favored by the fact that the sealing adhesive means that no additional sealing elements or sealing processes are required.

The method comprises the steps specified, preferably in the order specified. Individual process steps can also take place simultaneously or side by side. 9

The method according to the invention is particularly preferably used for assembling a mobile charging device according to the invention. All the features and advantages described in connection with the mobile charging device according to the invention can therefore be transferred analogously to the method according to the invention and vice versa.

The process can easily be automated. Advantageously, the method is therefore carried out by means of an automat, for example by means of a robot.

The first cover is preferably joined to the housing by means of a joining device and, independently of this, the adhesive is filled into the cavity by means of a filling device. Alternatively, the processes can also be carried out in a common device.

Joining the first cover to the housing preferably includes pressing the first cover into the first access opening or pressing a portion of the housing surrounding the first access opening into the first cover. The joining device can be designed to grasp the first cover, to move the first cover into the area of the first access opening and to add the first cover to the housing, in particular to press it into the first access opening.

Filling the adhesive into the cavity preferably includes injecting the adhesive into the cavity. The filling device can comprise a nozzle for dispensing the adhesive means, which nozzle is adapted to the filling opening. The filling device can be designed to attach the nozzle to the filling opening and to release or inject the adhesive into the cavity, in particular to release a predefined quantity of adhesive into the cavity or to release adhesive into the cavity until adhesive emerges from the vent opening .

The method for connecting the first cover to the housing preferably comprises only the joining of the first cover to the housing and the filling of the adhesive into the cavity.

These and other advantages and features of the present invention are described below with reference to the accompanying drawings. 10

Fig. 1 is a schematic representation of a preferred embodiment of an inventions to the invention loading device.

FIG. 2 is a schematic perspective view of a housing of the charging device of FIG. 1.

FIG. 3 is a perspective view of a cover of the loading device of FIG. 1.

FIG. 4 is a sectional view of a portion of the loading device of FIG. 1.

A mobile charging device 2 according to the invention for charging a battery or energy store of an electric vehicle 4 or an electric car comprises a charging control device 6 for controlling charging parameters, a mains-side connection 8 for connecting the charging device 2 to a power grid, which is indicated by a socket 10 , and a charging plug 12 for connecting the charging device 2 to a charging connection 14 of the electric vehicle 4. The charging plug 12 is preferably designed as an IEC type 2 coupling. The mains connection 8 is connected to the charging control device 6 by means of a first charging cable 16 and the charging plug 12 is connected to the charging control device 6 by means of a second charging cable 18 .

The charging control device 6 comprises a housing 20 in which the power and/or control electronics 22 of the mobile charging device 2 is accommodated and which has at least one access opening 24 th. Furthermore, the charging control device 6 includes a first cover 26 which closes the first access opening 24 . The housing 20 can also have a second access opening 28 , the charging control device 6 then comprising a second cover 30 which closes the second access opening 28 . This can be the case, for example, when the housing 20 and in particular the first and the optional second access opening 24 , 28 are designed symmetrically with respect to a central axis 32 . The first and the optional second cover 26, 30 are then preferably also formed symmetrically to the central axis 32.

In a preferred embodiment, the housing 20 and the first cover 26, ge optionally also the second cover 30, are designed to be rotationally symmetrical to the central axis 32. 11 det, for example at least partially cylindrical. The first access opening 24 can then be arranged on a first end face 20a of the housing 20 and the second access opening can be arranged on a second end face 20b of the housing 20 .

The housing 20 may further include a display 34 for displaying information about the charging process and at least one control element 36 for enabling user input. The display 34 and the at least one operating element 36 are preferably connected to the power and/or control electronics 22, in particular to a control unit, of the charge control device 6 in a communicating manner.

As also indicated in Fig. 1, the first charging cable 16 comprises at least one electrical line 38 for conducting electrical current from the grid-side connection 8 to the charging control device 6, and the second charging cable 18 comprises at least one electrical line 40 for conducting electrical current from the Charging control device 6 for consumer-side connection 12. The first cover 26 can have a through-opening 42 (see FIG. 2) through which the electrical line 38 of the first charging cable 16 is guided into the housing 20, where it is connected to the power and control electronics 22 is. If the second cover 30 is provided, it can also have a through opening through which the electrical line 40 of the second charging cable 18 is routed into the housing 20 where it is connected to the power and control electronics 22 .

Each charging cable 16, 18 usually includes a plurality of electrical lines 38, 40 for connecting the consumer-side connection 12 or the electric vehicle 4 and the grid-side connection 8 to the charging control device 6, with at least one line of the plurality of electrical lines 38, 40 as a control or signal line 44, 46 for the communicating connection between the consumer-side connection 12, the electric vehicle 4 or the mains-side connection 10 and the charging control device 6 is used.

The housing 20 has a first mating surface 48 and the first cover 26 has a second mating surface 50 which face one another and which extend around the first access opening 24, as described in more detail below with reference to FIGS. The first and second mating surfaces 48, 50 together define a cavity 52, which extends at least partially around the first access opening 24, which is filled with an adhesive that 12 sealingly connects the first cover 26 to the housing 20 and which can be seen in FIG.

FIG. 2 shows a section of the housing 20 comprising the first access opening 24 schematically in a perspective view. In this case, the housing 20 is of essentially cylindrical design and is therefore rotationally symmetrical to the central axis 32. The housing 20 can be a hollow cylinder to accommodate the power and/or control electronics 22. The first access opening 24 is arranged here on the first end face 20a of the housing 20 and is also symmetrical to the central axis 32.

Regardless of the exact shape of the housing 20, this has a (maximum) outer diameter DA and a length L in the longitudinal direction, which is also marked in FIG.

The housing 20 may include a collar 54 surrounding and thereby defining the first access opening 24 . The collar 54 then has the first joining surface 48 . The portion of the housing 20 defining the first access opening 24 and having the first mating surface 48 need not be structurally distinct from the remainder of the housing 20 . However, it is conceivable that this section and, above all, the first joining surface 48 is delimited from the other surfaces of the housing 20 by steps in the housing 20, for example, as indicated by the circumferential line in FIG. 2 and as can be seen in FIG. However, the housing 20 can, for example, also have a flange on the end face 20a, which flange then has the first joining surface 48 .

In the illustrated embodiment, the first mating surface 48 is an inner peripheral surface of the housing 20 and preferably completely surrounds the first access opening 24 . In this case, the first cover 26 is pressed into the first access opening 24 . However, the first joining surface 48 can also be an outer peripheral surface and thus a part of the lateral surface of the housing 20 .

The housing 20 also has at least one filling opening 56 for filling the adhesive into the cavity 52 in the region of the first joining surface 48 . In the embodiment shown, the at least one filling opening 56 runs radially to the central axis 32 from an outer peripheral surface of the housing 20 to the inner peripheral surface of the housing 20 13 and opens into the first joining surface 48. As a result, the at least one filling opening 56 provides a fluid connection to the cavity 52 when the housing 20 and the first cover 26 are in the assembled state (see FIG. 4). The at least one filling opening 56 has a diameter DF.

In addition, the housing 20 has at least one ventilation opening 58 in the region of the first joining surface 48 for discharging air from the cavity 52 . In the embodiment shown, the at least one ventilation opening 58 runs radially to the central axis 32 from the outer circumferential surface of the housing 20 to the inner circumferential surface of the housing 20 and opens into the first joining surface 48. As a result, the at least one ventilation opening 58 when the housing 20 is in the assembled state and the first lid 26 (see FIG. 4) provide fluid communication with cavity 52. The at least one ventilation opening 58 has a diameter DE, which is preferably smaller than the diameter DF of the at least one filling opening 56.

In Fig. 3, the first cover 26 is shown in a perspective view. The first cover 26 has the second joining surface 50 and in this case is designed to be essentially rotationally symmetrical to the central axis 32 .

The first cover 26 preferably has a connecting section 60 for connection to the housing 20 which has the second joining surface 50 . For example, the connec tion section 60 is a collar or flange that corresponds to the collar 54 or flange of the housing 20 . The first cover 26 can have the passage opening 42 for passing the electrical lines 38 of the first charging cable 16 through. The through opening 42 is preferably formed coaxially to the central axis 32 .

In the illustrated embodiment, the second joining surface 50 is an outer peripheral surface of the first cover 26, in particular of the connecting section 60 of the first cover 26, and preferably surrounds the first cover 26 completely. In this case, the first cover 26 is pressed into the first access opening 24 , for which purpose the connecting section 60 corresponds to the first access opening 24 in terms of shape and dimensions. For example, a diameter DD of the first cover 26 at least in the connecting portion 60 substantially corresponds to an inside diameter Di of the first access opening 24 (see FIG. 2 ). 14

The first cover 26 can also have an end section 61 with an end face 61a facing the end face 20a of the housing. A diameter of the end section 61 is preferably larger than the diameter DD of the connecting section 60. The end section 61 thus forms a flange. It is conceivable that, in addition or as an alternative to the illustrated embodiment, the end face 20a of the housing 20 has the first joining surface 48 and the end face 61a of the end section 61 of the first cover 26 has the second joining surface 50 .

As indicated in FIG. 3 and described in more detail below with reference to FIG. 4, the second joining surface 50 can have a groove 62 to form the cavity 52 between the first and second joining surfaces 48, 50. FIG. The groove 62 preferably completely surrounds the first access opening 24 in the assembled state of the first cover 26 and the Ge housing 20 in order to form the complete circumferential cavity 52 . Additionally or alternatively, the first joining surface 48 can have a groove.

4 shows a sectional view of the housing 20 and the first cover 26 in the region of the first and the second joining surface 48, 50. The first and the second joining surface 48, 50 together delimit the cavity 52, which is filled with adhesive. The groove 62 bounds the cavity 52 on three sides by means of a bottom and left and right side surfaces of the groove 62. The open side of the groove 62 is covered by the first mating surface 48 which bounds the cavity 52 on the fourth side. To fill the cavity 52 with the adhesive, the fill port 56 provides fluid communication with the cavity 52 ready.

The cavity 52 preferably completely surrounds the first access opening 24 , that is to say it is designed to be continuous in the circumferential direction of the first access opening 24 or of the housing 20 and the first cover 26 . The dimension of the cavity 52 is decisively determined by a width BH of the cavity 52 and a gap dimension S between the first and second joining surfaces 48, 50. If one of the first and second joining surfaces 48, 50 has the groove 62, the gap dimension S corresponds preferably a depth of the groove 62 and the width BH a width of the groove 62. The gap size S is preferably defined radially to the central axis 32 and the width BH is preferably defined parallel to the central axis 32. 15

The housing 20 and the first cover 26 can form a lap joint with a predefined overlap length U th. This means that the first cover 26 is inserted into the first access opening 24 such that the first cover 26 and the housing 20 overlap over the overlap length U, or vice versa. The overlap length U is greater than the width BH of the cavity 52.

In addition, the first and the second joining surface 48, 50 are non-positively connected to one another in a contact area 64. This can be effected by an interference fit between the first mating surface 48 of the housing 20 and the second mating surface 50 of the first cover 26 . In the illustrated embodiment, the interference fit between the diameter of the first cover DD and the inner diameter Di of the first access opening 24 would be defined. The contact area 64 preferably completely surrounds the first access opening 24 and can be formed by the areas of the first and second mating surfaces 48 , 50 adjacent to the cavity 52 . As can be seen in FIG. 4, the contact area 64 is formed here by the areas of the first and second joining surfaces 48, 50, which result from the difference between the overlap length U and the width BH of the cavity 52.

Since the first cover 26 is only pressed into the first access opening 24 and is glued to the housing 20, a wall thickness WG of the housing 20 in the area of the first joining surface 48 and a wall thickness WD of the first cover 26 in the area of the second joining surface 50 can be selected to be small .

16

reference list:

2 mobile charger

4 electric vehicle

6 charge control device

8 mains connection

10 socket

12 consumer side connection

14 charge port

16 first charging cable

18 second charging cable

20 housing

22 power and/or control electronics

24 first access port

26 first cover

28 second access port

30 second lid

32 central axis

34 ad

36 control element

38 electric line

40 electric line

42 through hole

44 signal line

46 signal line

48 first mating surface

50 second mating surface

52 cavity

54 collar

56 filling opening

58 vent hole

60 connection section

61 forehead section

62 slots 17

64 contact area

DA outside diameter housing

L length housing

Di Inner diameter access port DF Diameter fill port

EN Diameter vent hole

DD diameter cover

Bra width cavity

S Gap U Overlap length

WG wall thickness housing

WD wall thickness cover

Claims

18

Claims Mobile charging device (2) for charging an electric vehicle (4), a charging control device (6) for controlling parameters for charging an accumulator of the electric vehicle (4), a mains-side connection (8) for connecting the charging control device (6) to a power grid and a consumer-side connection (12) for connecting the charging control device (6) to the electric vehicle

(4) includes; wherein the charging control device (6) comprises a housing (20) in which the power and/or control electronics (22) of the mobile charging device (2) are accommodated and which has at least one first access opening (24); and wherein the charge control device (6) comprises a first cover (26) closing the first access opening (24); said housing (20) having a first mating surface (48) and said first cover (26) having a second mating surface (50) facing each other and extending around said first access opening (24), said first and second mating surfaces (48, 50) together define a cavity (52) which extends at least partially around the first access opening (24) and is filled with an adhesive which seals the first cover (26) and the housing (20) together. Loading device (2) according to claim 1, characterized in that the cavity (52) completely surrounds the first access opening (24). Loading device (2) according to Claim 1 or 2, characterized in that at least one of the first and second joining surfaces (48, 50) has a groove (62) for forming the cavity (52) between the first and second joining surfaces (48, 50 ) having. Loading device (2) according to any one of the preceding claims, characterized in that 19 the housing (20) has a wall thickness (WG) in the area of the first joining surface (48) which is between 1 mm and 3 mm, more preferably between 1.2 mm and 2.5 mm, even more preferably 1.5 mm ; and the first cover (26) in the area of the second joining surface (50) has a wall thickness (WD) of between 1.5 mm and 4 mm, more preferably between 2.0 mm and 3.0 mm, even more preferably 2, is 5 mm.

5. Loading device (2) according to one of the preceding claims, characterized in that at least one of the first and second joining surfaces (48, 50) has at least one filling opening (56) for filling the adhesive into the cavity (52) and at least one of first and second joining surface (48, 50) has at least one ventilation opening (58) for removing air from the cavity (52), the at least one filling opening (56) and the at least one ventilation opening (58) each having a fluid connection to the cavity ( 52) provide.

6. Loading device (2) according to claim 5, characterized in that the first access opening (24) is rotationally symmetrical to a central axis (32) and the filling opening (56) and the ventilation opening (58) run radially to the central axis (32). .

7. Loading device (2) according to one of the preceding claims, characterized in that the first and the second joining surface (48, 50) are non-positively connected to one another in a contact area (64).

8. Loading device (2) according to any one of the preceding claims, characterized in that the housing (20) further comprises a display (34) and at least one operating element (36).

9. Charging device (2) according to one of the preceding claims, characterized in that it also has a first charging cable (16) which connects the charging control device (6) to the mains-side connection (8), and a second charging cable (18) which the charging control device (6) connects to the consumer-side connection (12), wherein the first cover (26) has a through-opening (42), 20 through which an electrical line (38, 40) of the first or second charging cable (16, 18) is guided into the housing (20), where it is connected to the power and control electronics (22) of the charging device (2).

10. A method for installing a mobile charging device (2) for charging an electric vehicle (4) comprising the following steps:

Joining a first cover (26) to a housing (20) of a charging control device (6) of the mobile charging device (2) in such a way that the first cover (26) closes a first access opening (24) of the housing (20);

filling an adhesive into a cavity (52) through a filling port (56), the cavity (52) being formed between a first mating surface (48) of the housing (20) and a second mating surface (50) of the first lid (26), and at least partially around the first access opening (24), wherein the filling opening (56) has a

providing fluid communication to the cavity (52);

displacing air from the cavity (52) by filling the adhesive into the cavity (52), the air escaping the cavity (52) through a vent opening (58) providing fluid communication with the cavity (52). ; and

Forming a strong and tight connection between the housing (20) and the first cover (26) by the adhesive.