DE-102024003717-A1 - Protective arrangement for an electrical energy storage device and vehicle

Abstract

The invention relates to a protective arrangement for an electrical energy storage device (1) arranged on the floor (F) of a vehicle, comprising a housing (2) and a plurality of electrically interconnected individual cells (3) arranged therein. According to the invention, at least one stiffening element (6, 10) is arranged in at least one connection area of the housing (2) to a vehicle structure. The invention further relates to a vehicle with an electrical energy storage device (1) and such a protective arrangement.

Inventors

• Sebastian Vaupel
• Meenakumari Lakshman

Assignees

• Mercedes-Benz Group AG

Dates

Publication Date

20260513

Application Date

20241113

Claims (9)

1. Protective arrangement for an electrical energy storage device (1) arranged on a vehicle floor (F) of a vehicle, comprising a housing (2) and a plurality of electrically interconnected individual cells (3) arranged therein, characterized in that at least in a connection area of the housing (2) to a vehicle structure at least one stiffening element (6, 10) is arranged.
2. Protection order according to Claim 1 , characterized in that the at least one stiffening element (6) is designed in an angle shape, wherein a leg (S1) of the stiffening element (6) extends at least sectionally between the vehicle floor (F) and the housing (2) and a further leg (S2) angled perpendicular to the leg (S1) rests against a vehicle component (8).
3. Protection order according to Claim 1 or 2 , characterized in that the at least one stiffening element (6, 10) is arranged section by section on a frame element (7) for mounting the electrical energy storage device (1) on the vehicle floor (F).
4. Protection order according to Claim 3 , characterized in that at least one screw (9) is passed vertically through an edge area (R) projecting horizontally from the housing (2) in a flange-like manner and through the frame element (7) and is screwed to the vehicle component (8).
5. Protection order according to one of the Claims 2 until 4 , characterized in that the at least one stiffening element (6, 10) is connected to the housing (2) and/or the vehicle floor (F) and/or the vehicle component (8) by force and/or form and/or material connection.
6. Protection order according to Claim 4 or 5 , characterized in that the electrical energy storage device (1) is connected to the frame element (7) by means of the edge area (R) which projects horizontally from the housing (2) in a flange-like manner.
7. Protective arrangement according to one of the preceding claims, characterized in that the at least one stiffening element (6, 10) is arranged at least sectionally on a longitudinal side of the housing (2).
8. Protection order according to Claim 7 , characterized in that a respective longitudinal axis of the longitudinal sides of the housing (2) runs in the direction of a vehicle longitudinal axis.
9. Vehicle with an electrical energy storage device (1) and a protective arrangement designed according to one of the preceding claims.

Description

The invention relates to a protective arrangement for an electrical energy storage device mounted on the floor of a vehicle, comprising a housing and a plurality of electrically interconnected individual cells arranged therein. The invention further relates to a vehicle with an electrical energy storage device and a protective arrangement. From the US 9,761,846 B2 A battery housing is known. The battery housing comprises a first housing element, a second housing element which together with the first housing element forms an enclosed space, a foam material which is provided along an inner wall surface of the enclosed space, and a reinforcement element which is arranged in the enclosed space to hold the foam material between the reinforcement element and the inner wall surface. Furthermore, the JP 20240555518 A A battery housing structure. This structure comprises a frame component with a rectangular closed cross-sectional structure formed by a lower support of a battery mounting bracket, which is connected to a battery module. The frame component also includes a reinforcing element located on the outside of a lower housing. Furthermore, within the frame component, an inclined section of the lower housing is arranged in the battery housing in a direction along a diagonal line of the rectangular closed cross-sectional structure. The invention is based on the objective of providing a protective arrangement for an electrical energy storage device of a vehicle and a vehicle. The problem is solved according to the invention by a protective arrangement having the features specified in claim 1 and by a vehicle having the features specified in claim 9. Advantageous embodiments of the invention are the subject of the dependent claims. A protective arrangement for an electrical energy storage device located on the floor of a vehicle, comprising a housing with a plurality of electrically interconnected individual cells arranged therein, provides according to the invention that at least one stiffening element is arranged in at least one connection area of the housing to a vehicle structure. By incorporating at least one stiffening element as part of the protective arrangement, the risk of a so-called hinge effect due to forces resulting from a collision, particularly a side collision, acting on the vehicle, especially the electrical energy storage device, is significantly reduced. The connection area between the electrical energy storage device housing and the vehicle is stiffened by this at least one stiffening element, thus largely preventing the electrical energy storage device from pivoting around an edge of the housing, which could deform the housing and damage individual cells within it. This at least one stiffening element reduces the collision-induced loads acting on the individual cells within the housing, particularly at least partially mitigating point loads on individual cells. In one embodiment, at least one stiffening element is angled, with one leg of the stiffening element extending at least partially between the vehicle floor and the housing, and a further leg, angled perpendicular to the first leg, abutting a vehicle component. The stiffening element is supported against the vehicle component, particularly a vehicle body shell, by means of its perpendicularly projecting leg. In another embodiment, at least one stiffening element is arranged section by section on a frame element for mounting the electrical energy storage device to the vehicle floor. This also achieves optimized support for the at least one stiffening element, thus significantly reducing the risk of the electrical energy storage device pivoting around the edge of its housing, which could deform the housing and damage the individual cells. One possible design involves at least one screw being inserted vertically through a horizontally flange-like edge section projecting from the housing and through the frame element, and then bolted to the vehicle component. This single screw stiffens the housing itself, particularly in the edge section, thereby reducing deformation of the housing due to collision-related loads. This, in turn, reduces the potential risk of damage to the individual cells within the housing. In another possible version, this is at least a force-resistant stiffening element. and/or is connected to the housing and/or the vehicle component in a form-fit and/or material-fit manner. The at least one stiffening element is connected to the housing and/or the vehicle component in such a way that the at least one stiffening element, particularly with regard to the housing of the electrical energy storage device, is fixedly positioned and cannot move. In one embodiment, the electrical energy storage device is connected to the frame element by means of the edge section, which projects horizontally from the housing in a flange-like manner. The frame element reinforces the edge section, thus stiffening it and reducing deformation of the