DE102022201871A1 - Framework construction for traction batteries in a mobile charging vehicle - Google Patents

Abstract

Disclosed is a framework construction for equipping and holding traction batteries (40) weighing more than 150 kg in a loading space (11) of a small van (10),
• wherein the van (10) has a charging socket (12) that can be electrically connected to the traction batteries (40) for connecting a charging cable (13) and can be used as a mobile charging station,
• wherein the framework structure has lateral longitudinal beams (20) for each transport battery (40), which can each be fastened laterally to the traction batteries (40),
• wherein the longitudinal members (20) of adjacent traction batteries (40) are mechanically connected to one another via intermediate members (30), so that the traction batteries (40) are fixed in their position relative to one another and relative to the loading space (11) of the van (10).

Description

technical field

The disclosure relates to a framework construction for traction batteries in a mobile charging vehicle. The scaffolding is used to hold or transport energy stores, and the scaffolding can be arranged in the loading space of a van. Small vans are small trucks that, due to their permissible total weight, can be driven in some countries without a driver's license other than for passenger cars. A payload of a van is between about 0.5 and 1.5 tons.

WO 2018/076849 A1 discloses a drawer-type mobile charging vehicle aimed at simplifying the replacement of a battery pack. The mobile charging vehicle includes a frame fixed inside a carriage of a vehicle body, a plurality of placement units fixed on the frame in a stacked manner, and a plurality of battery packs placed on the placement units. A drive motor is also provided, which drives the placement units to move. When the mobile charging vehicle performs battery replacement, the drive motor carries a battery pack on the placement units out of or into the carriage by moving the placement units to move them. This simplifies battery replacement and reduces the total area occupied during battery replacement.

Description

According to the present disclosure, a scaffolding construction is to be specified which has a low weight while ensuring mechanical dimensional stability. The scaffolding construction is intended to fix the transport batteries relative to a pickup truck. The traction batteries are heavy. The weight can be more than 150 kg, in particular more than 300 kg. This rules out manual handling of the traction batteries with muscle power without hydraulic or mechanical devices with leverage.

These tasks are solved with a scaffolding construction having the features of claim 1. The dependent claims form advantageous developments of the fuel cell unit. The dependent claims can be combined with one another in any technologically sensible manner. The description, in particular in connection with the exemplary embodiment, additionally characterizes and characterizes the disclosure.

• • wobei der Kleintransporter eine mit den Traktionsbatterien elektrisch verbindbare Ladebuchse zum Anschließen eines Ladekabels aufweist und als eine mobile Ladestation einsetzbar ist,
• • wobei die Gerüstkonstruktion für jede Transportbatterie seitliche Längsträger aufweist, die jeweils seitlich mit den Traktionsbatterien befestigbar sind,
• • wobei die Längsträger benachbarter Traktionsbatterien mechanisch über Zwischenträger miteinander verbunden sind, so dass die Traktionsbatterien in ihrer Lage relativ zueinander sowie relativ zu dem Laderaum des Kleintransporters fixiert sind.

Accordingly, a scaffolding construction is provided for equipping and holding traction batteries weighing more than 150 kg in a loading space of a small van,

• • wherein the van has a charging socket that can be electrically connected to the traction batteries for connecting a charging cable and can be used as a mobile charging station,
• • wherein the scaffolding structure has lateral longitudinal beams for each transport battery, which can each be attached to the traction batteries at the side,
• • wherein the longitudinal beams of adjacent traction batteries are mechanically connected to one another via intermediate beams, so that the traction batteries are fixed in position relative to one another and relative to the loading space of the van.

A traction battery within the meaning of the present disclosure is a mobile electrical energy storage device which can preferably be used to drive electric vehicles or supplies the electric motors of electric vehicles with energy. In the present case, a number of these traction batteries are arranged in the loading space so that sufficient electrical energy can be stored to charge a number of traction batteries from electric vehicles connected to the connection means.

The traction batteries can also weigh more than 300 kg. An electric vehicle can be charged far away from a wall charging station via the charging cable. The scaffolding construction has lateral longitudinal beams that can be attached with the traction batteries.

In one embodiment, it is provided that the traction batteries are constructed for a motor vehicle and have receiving lugs that can be subjected to mechanical loads on their outer circumference and to which the side members are screwed.

The applicant proposes using traction batteries that are otherwise used in their electric vehicles and have appropriate mechanical and electrical connections and a cooling circuit. The cooling circuit includes cooling lines that run inside the battery to conduct heat in and out of the battery. The van can also have a higher-level cooling and heating device for the traction batteries, which can be connected to the cooling circuits of the traction batteries. The pickup truck has electrical wiring to electrically connect the traction batteries to the charging socket.

In one embodiment, it is provided that the longitudinal beams have orthogonally cantilevered holding beams, on which enclosing areas open at the bottom are arranged, wherein the enclosing areas can be placed on a longitudinal strut of the intermediate carrier.

On both sides of the traction batteries, the retaining beams realize shelf-like holders in which the traction batteries hang. The embracing areas extend downwards in the direction of gravity. The enclosing areas of a traction battery arranged above the intermediate carrier can be placed around the longitudinal struts during assembly. The traction batteries are mechanically pre-fixed in this position. Slipping is still possible in a longitudinal direction, but the heavy battery can no longer slip sideways and fall down. In this pre-fixed position, the enclosing areas can be safely screwed to the intermediate supports. The enclosing areas have two parallel sections, which enclose the essentially rectangular longitudinal struts, so that the longitudinal beams are secured against twisting and slipping in the transverse direction relative to the intermediate beams.

In one embodiment, it is accordingly provided that the enclosing areas and the longitudinal struts have bores, so that the enclosing areas can be screwed to the longitudinal struts using screws.

The bores are preferably arranged on the longitudinal struts and the enclosing areas in the transverse direction of the vehicle.

In one embodiment, it is provided that the intermediate support is formed from the longitudinal strut, a stabilizing strut parallel thereto and a centering strut parallel thereto.

Closed profile parts can be used for the longitudinal strut, the stabilizing strut and the centering strut, for example made from base materials made of steel or aluminum.

In one embodiment it is provided that the longitudinal strut, the stabilizing strut and the centering strut extend along a length which corresponds to 80% to 90% of a longitudinal extension of the traction battery.

The traction batteries are thus kept on almost their entire length.

In one embodiment, it is provided that the centering strut has a centering surface running at an angle relative to a floor surface, which in a design installation position with an angle element on the floor surface and aligns and centers the traction battery with the associated longitudinal member and the intermediate element relative to the floor surface.

The angle element can be a triangular part that is rigidly connected to a framework which in turn can be adjustably fixed to the floor surface. To prepare a small transporter, the angle elements mentioned must be attached to the floor surface in the loading area at a defined distance from one another. The defined distance results from the distance specified by two intermediate carriers which are fastened in opposite directions to the traction battery and have a traction battery between them. A bottom traction battery is thus aligned and centered relative to the pickup truck. It should be noted that the traction battery is so heavy that it is not possible to correct the position of the lowest traction battery in the load compartment. By means of a handling device, possibly a crane or a forklift, the lowest traction battery is introduced into the vehicle on the floor surface in such a way that the centering surfaces are close to the angle elements, respectively. Slight deviations in the angle and alignment are compensated for by the interaction of the centering surfaces with the angle elements during the subsequent setting down.

In one embodiment, it is provided that lugs for receiving forklift tines are arranged on the longitudinal member.

The tabs can be formed from steel wire bent into a U-shape and approximately 5 to 10 mm thick.

In one embodiment, it is provided that the holding beams on the longitudinal member and the intermediate struts running between the longitudinal strut, the stabilizing strut and the centering strut on the intermediate member are designed relative to the traction battery such that a cooling inlet and a cooling return are allowed to pass through, so that the cooling inlet and cooling return are on a vehicle-internal cooling system can be connected.

As mentioned at the beginning, the respective cooling circuits of the traction batteries have to be connected to the superordinate cooling circuit of the van in a fluid-conducting manner. Accordingly, there are openings or gaps in the scaffolding construction, where easy access to the cooling lines (cooling supply and cooling return) is guaranteed so that a mechanic can easily connect the associated cooling lines to the van.

character list

• 1: schematisch in einer Schnittdarstellung einen Kleintransporter mit einem Laderaum, in dem mehrere übereinander angeordnete Traktionsbatterien an einer Gerüstkonstruktion befestigt sind und die Gerüstkonstruktion wiederum in dem Kleintransporter angeordnet und befestigt ist;
• 2 einen Abschnitt eines Längsträgers und einer Traktionsbatterie, mit einem Haltebalken, der mit einer Aufnahmelasche an der Traktionsbatterie verschraubt ist;
• 3: teilweise schematisch eine Traktionsbatterie mit jeweils rechts und links davon angeordneten Längsträgern sowie einem Kühlzulauf und einem Kühlablauf;
• 4: einen Abschnitt eines Zwischenträgers und eines darüber angeordneten Längsträgers im Querschnitt durch eine Y-Z-Ebene;
• 5: zwei spiegelsymmetrische Zwischenträger in einer Lage relativ zueinander, in der sie bei der bestimmungsgemäßen Einbaulage relativ zu der Transportbatterie liegen; und
• 6: schematisch einen Laderaum eines Kleintransporters mit darin angeordneten Winkelelementen zur Aufnahme der Zwischenträger einer untersten Traktionsbatterie.

The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. Show it:

• 1 : a schematic sectional view of a van with a loading space in which several traction batteries arranged one above the other are fastened to a frame structure and the frame structure is in turn arranged and fastened in the van;
• 2 a section of a side rail and a traction battery, with a support beam bolted to a receiving tab on the traction battery;
• 3 : partially diagrammatically a traction battery with longitudinal members arranged on the right and left of it, as well as a cooling inlet and a cooling outlet;
• 4 : a section of an intermediate member and a longitudinal member arranged above it, in cross-section through a YZ plane;
• 5 : two mirror-symmetrical intermediate carriers in a position relative to one another in which they lie relative to the transport battery in the intended installation position; and
• 6 : Schematic view of a loading space of a van with angle elements arranged therein for receiving the intermediate carrier of a lowest traction battery.

The following description is merely illustrative in nature. For purposes of clarity, the same reference numbers will be used throughout the drawings to designate similar elements.

1 1 shows a scaffolding for loading and holding traction batteries 30 weighing more than 100 kg in a loading space 11 of a van 10. The van 10 has a charging socket 12 that can be electrically connected to the traction batteries 40 for connecting a charging cable 13.

Electric vehicles can thus be charged via the van 10 independently of a power grid and a corresponding infrastructure. The pickup truck 10 can be used as a mobile charging station.

For each transport battery 40 , the framework construction has lateral longitudinal beams 20 which are mounted mirror-symmetrically to the right and left of the traction batteries 40 . The longitudinal beams 20 of respectively adjacent traction batteries 40 are mechanically rigidly connected to one another via intermediate beams 30 . As a result, the traction batteries 40 are fixed in their position relative to each other and relative to the loading space 11 of the van 10 .

The traction battery 40 is designed for a motor vehicle and is accordingly available in large numbers. On the outer circumference, the traction battery has receiving lugs 43 that can be subjected to mechanical loads, with which the longitudinal beams 20 are screwed on the right and left. The mounting brackets can be seen enlarged in 2 . Three receiving tabs 43 are arranged on each side of the traction batteries 40 . When the traction batteries are used as intended in the motor vehicle, these receiving tabs 43 are used for attachment to the latter. The framework construction according to the disclosure enables a stacking of several traction batteries 40 in the van 10. For this purpose, below the in 3 illustrated traction battery 40 on both sides in 5 shown subcarrier 30 with the in 3 longitudinal members 20 shown connected. The framework constructions of adjacent traction batteries 40 can be screwed together.

Further referring to the 3 and 5 the longitudinal strut 31, the stabilizing strut 32 and the centering strut 33 extend along a length L30, which corresponds to 80% to 90% of a longitudinal extension L40 of the traction battery 40.

Tabs 22 for receiving forklift prongs 50 are arranged on the longitudinal beam 20 . The retaining beams 21 are designed on the longitudinal member 20 and intermediate struts 36 running between the longitudinal strut 31, the stabilizing strut 32 and the centering strut 33 on the intermediate member 30 relative to the traction battery 40 such that a cooling inlet 41 and a cooling return 42 are allowed to pass through, so that the cooling inlet 41 and cooling return 42 can be connected to a vehicle-internal cooling system 16 (see 3 ).

One recognizes in 4 that the longitudinal members 20 have orthogonally cantilevered retaining beams 21 on which downwardly open enclosing areas 23 are arranged, wherein the enclosing areas 23 can be placed on a longitudinal strut 31 of the intermediate support 30 .

The enclosing areas 23 of a traction battery 40 arranged above the intermediate carrier 30 can, during assembly, around the longitudinal struts 31 of the intermediate carrier 30 are placed. The traction batteries 40 are mechanically pre-fixed in this position. Slipping is still possible in a longitudinal direction X, but the upper traction battery 40 can no longer slip. The enclosing areas 23 can be screwed to the intermediate carriers 30 in this pre-fixed position.

The enclosing areas 23 and the longitudinal struts 31 have bores 24 for screwing, so that the enclosing areas 23 can be screwed to the longitudinal struts 31 via screws 32 .

5 shows that the intermediate supports 30, which are mirror-symmetrical in the XZ plane, are formed from the longitudinal strut 31, a stabilizing strut 32 parallel thereto and a centering strut 33 parallel thereto. The side members 20 are also configured mirror-symmetrically in the XZ plane for the respective right or left side of the traction batteries 40 .

6 shows a van 10 in a perspective sectional view. A longitudinally adjustable profile is screwed onto a floor surface 14, on which the 1 until 5 described construction from the traction battery 40, a two-sided longitudinal beam 20 and the intermediate supports 30 is attachable. Another traction battery 40 with a longitudinal support 20 and an intermediate support 30 is arranged above it, and so on, until a maximum charging capacity is reached. The centering strut 33 has with reference to the 5 and 6 a centering surface 34 running at an angle relative to a floor surface 14, which in an installation position 35 according to the design cooperates with an angle element 15 on the floor surface 14 and aligns and centers the traction battery 40 with the associated longitudinal member 20 and the intermediate element 30 relative to the floor surface 14. The centering strut 33 is formed from a rectangular profile inclined by approximately 45%.

Although at least one exemplary embodiment has been presented in the foregoing description as well as the description of the figures, it should be recognized that a large number of variations exist. Furthermore, it should be appreciated that the embodiment(s) are only examples and are not intended to limit the scope, applicability, or precise configuration in any way. Rather, the description and description of the figures provide useful guidance for those skilled in the art for implementing at least one embodiment, it being understood that various changes in form and function of the described features may be made without departing from the scope of the claims and their equivalents .

Reference List

10

pickup truck

11

hold

12

charging socket

13

charging cable

14

floor space

15

angle element

20

side members

21

hold bar

22

tabs

23

encircling areas

30

intermediate carrier

31

longitudinal brace

32

stabilizer bar

33

intermediate brace

34

centering surface

35

installation position

36

intermediate brace

40

traction battery

41

cooling inlet

42

cooling return

43

receiving tabs

50

forklift tines

L30

length

L40

longitudinal extent

X

longitudinal axis

Y

transverse axis

Z

vertical axis

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• WO 2018076849 A1 [0002]

Claims (9)

Scaffolding construction for equipping and holding traction batteries (40) weighing more than 150 kg in a loading space (11) of a small van (10), • wherein the van (10) has a charging socket (12) that can be electrically connected to the traction batteries (40) for connecting a charging cable (13) and can be used as a mobile charging station, • wherein the framework structure has lateral longitudinal beams (20) for each transport battery (40), which can each be fastened laterally to the traction batteries (40), • wherein the longitudinal members (20) of adjacent traction batteries (40) are mechanically connected to one another via intermediate members (30), so that the traction batteries (40) are fixed in their position relative to one another and relative to the loading space (11) of the van (10). scaffolding construction claim 1 , wherein the traction battery (40) is constructed for a motor vehicle and has mechanically loadable receiving lugs (43) on the outer circumference, with which the longitudinal beams (20) are screwed. scaffolding construction claim 1 and/or 2, the longitudinal beams (20) having orthogonally cantilevered retaining beams (21) on which enclosing areas (23) open towards the bottom are arranged, wherein the enclosing areas (23) can be placed on a longitudinal strut (31) of the intermediate carrier (30). . scaffolding construction claim 3 , wherein the enclosing areas (23) and the longitudinal struts (31) have bores (24) so that the enclosing areas (23) can be screwed to the longitudinal struts (31) via screws (32). scaffolding construction claim 3 and/or 4, the intermediate supports (30) being formed from the longitudinal strut (31), a stabilizing strut (32) parallel thereto and a centering strut (33) parallel thereto. scaffolding construction claim 5 , wherein the longitudinal strut (31), the stabilizing strut (32) and the centering strut (33) extend along a length (L30) which corresponds to 80% to 90% of a longitudinal extension (L40) of the traction battery (40). scaffolding construction claim 6 , wherein the centering strut (33) has a centering surface (34) running at an angle relative to a floor surface (14) which, in a structural installation position (35) with an angle element (15) on the floor surface (14) and the traction battery (40) with aligns and centers the associated side rail (20) and intermediate member (30) relative to the floor surface (14). Scaffolding construction according to one or more of the preceding claims, wherein tabs (22) for receiving forklift tines (50) are arranged on the longitudinal beams (20). Scaffolding construction according to one or more of the preceding claims, wherein the retaining beams (21) on the longitudinal beam (20) and between the longitudinal strut (31), the stabilizing strut (32) and the centering strut (33) running intermediate struts (36) on the intermediate beam (30) so are designed relative to the traction battery (40) so that a cooling inlet (41) and a cooling return (42) can pass through, so that the cooling inlet (41) and cooling return (42) can be connected to a cooling system (16) inside the vehicle.

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