BATTERY MODULE HOUSING FOR ACCOMMODATING AT LEAST ONE CELL STACK FOR USE IN A MOTOR VEHICLE

Abstract

A battery module housing for accommodating at least one cell stack for use in a motor vehicle. The battery module housing includes a plurality of housing units for accommodating battery cells, as well as a front and a rear cover member for closing the housing units. The housing units are designed as extrusion profiles and include a front and a rear face-side opening for introducing the battery cells and a housing wall arranged between the openings. The housing units are positively connected to one another via their housing wall and the front and rear cover elements are designed to cover the front and rear face-side openings of the housing units.

Claims

1. A battery module housing for accommodating at least one cell stack of battery cells for use in a motor vehicle, said battery module housing comprising: a plurality of housing units for accommodating the battery cells, a front and a rear cover member for closing the housing units, wherein the housing units are extrusion profiles and each comprise (i) a front and a rear face-side opening for introducing the battery cells and (ii) a housing wall arranged between the openings, wherein the housing units are positively connected to one another via housing walls of the housing units, and wherein the front and rear cover elements cover the front and rear face-side openings of the housing units.

2. The battery module housing according to claim 1, further comprising at least two housing units for accommodating the battery cells, wherein the housing units are positively connected to one another via side walls of the respective housing wall arranged along an extrusion direction, wherein each housing unit further comprises a separating wall that separates the housing unit into two chambers.

3. The battery module housing according to claim 1, further comprising an intermediate chamber for accommodating air and/or a fire protection layer that is disposed between two positively connected housing units and within a joining region, wherein adjacent side walls of the two housing units are directly connected to one another via a weld connection.

4. The battery module housing according to claim 1, further comprising an intermediate chamber for accommodating battery cells that is disposed between two positively connected housing units and within a joining region, wherein adjacent side walls of the two housing units are indirectly positively connected to one another by additional connecting elements.

5. The battery module housing of claim 4, wherein the additional connecting elements are positively connected to a first and a second housing unit of the plurality of housing units, wherein the additional connecting elements are positively connected to the first housing unit via a first side and to the second housing unit via a second side, wherein the additional connecting elements comprise metal sheets.

6. The battery module housing according to claim 1, wherein the positively connected housing units are connected to one another both mechanically and in a media-tight manner, wherein positive connection points are arranged between two housing units on bottom and top surfaces of the housing units.

7. The battery module housing according to claim 1, wherein the positive connection is an adhesive connection, a weld connection, a friction stir weld connection or a laser weld connection.

8. The battery module housing according to claim 1, wherein the housing units are formed from an aluminum material and/or a magnesium material and/or a fiber-reinforced plastic.

9. The battery system for use in a motor vehicle comprising the battery module housing according to claim 1 and a plurality of cell stacks arranged within the battery module housing for driving the motor vehicle.

10. The battery system according to claim 9, further comprising at least three cell stacks, wherein a first cell stack of the at least three cell stacks is arranged within a first housing unit of the plurality of housing units, a second cell stack of the at least three cell stacks is arranged within a second housing unit that is positively connected to the first housing unit, and a third cell stack of the at least three cell stacks is arranged in an intermediate chamber disposed between the first and second housing units.

11. A motor vehicle comprising the battery system according to claim 9.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Further advantages, features, and details of the invention arise from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings.

[0021] FIG. 1 schematically shows a battery module housing according to aspects of the invention for accommodating at least one cell stack for use in a motor vehicle, according to a first exemplary embodiment in a plan view,

[0022] FIG. 2 schematically shows a battery module housing according to aspects of the invention for accommodating at least one cell stack for use in a motor vehicle, according to a first exemplary embodiment in a plan view without an arrangement of a front cover element,

[0023] FIG. 3 schematically shows a battery system according to aspects of the invention for use in a motor vehicle, according to a first exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1,

[0024] FIG. 4 schematically shows a battery system according to aspects of the invention for use in a motor vehicle, according to a second exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1,

[0025] FIG. 5 schematically shows a battery system according to aspects of the invention for use in a motor vehicle, according to a third exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1,

[0026] FIG. 6 schematically shows a motor vehicle comprising a battery system according to aspects of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0027] FIG. 1 shows a battery module housing 2 according to aspects of the invention for accommodating at least one cell stack 4 for use in an automobile 80, according to a first exemplary embodiment in a plan view.

[0028] FIG. 2 shows a battery module housing 2 according to aspects of the invention for accommodating at least one cell stack 4 for use in a motor vehicle 80, according to a first exemplary embodiment in a plan view without an arrangement of a front cover element 10a.

[0029] As can be seen according to FIGS. 1 and 2, the battery module housing 2 according to the aspects of invention for accommodating at least one cell stack 4 (see FIG. 3) for use in a motor vehicle 80 (see FIG. 6) comprises a plurality of housing units 6 for accommodating battery cells 8 (see FIG. 3), a front and a rear cover member 10a, 10b for closing the housing units 6, wherein the housing units 6 are designed as extrusion profiles and comprise a front and a rear face-side opening 12a, 12b for introducing the battery cells 8 and one housing wall 14 arranged between the openings 12a, 12b. As can be seen in particular in FIG. 2, the housing units 6 are in the present case positively connected to one another via their housing wall 14 in a joining region 22. The front and rear cover members 10a, 10b are furthermore designed to cover the front and rear face-side openings 12a, 12b of the housing units 6. In the present case, the positive connection is in the form of a weld connection 30′ arranged at the connection points 30.

[0030] As shown in FIG. 2, in the present case, two housing units 6 are provided for accommodating battery cells 8, wherein the housing units 6 are in the present case positively connected to one another via side walls 16 of the respective housing wall 14 arranged along an extrusion direction ER. Each housing unit 6 additionally comprises a separating wall 18, which separates the housing unit 6 into two chambers. As can be seen in the present case, the housing wall 14 of each housing unit 6 comprises bottom and top surfaces 34, 36 which are arranged longitudinally along the extrusion direction ER and are connected to one another via the side walls 16 arranged perpendicularly thereto.

[0031] FIG. 3 shows a battery system 1 according to aspects of the invention for use in a motor vehicle 80, according to a first exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1.

[0032] As can be seen according to FIG. 3, the battery system 1 comprises a battery module housing 2 and a plurality of cell stacks 4 having battery cells 8 arranged within the battery module housing 2 for driving the motor vehicle 80.

[0033] As shown in FIG. 3, an intermediate chamber 24 for accommodating air and/or a fire protection layer is provided between two positively connected housing units 6 within a joining region 22, wherein the adjacent side walls 16 of the two housing units 6 are in the present case directly connected to one another via a weld connection 30′.

[0034] FIG. 4 shows a battery system 1 according to aspects of the invention for use in a motor vehicle 80, according to a second exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1.

[0035] As can be seen according to FIG. 4, the battery system 1 comprises a battery module housing 2 and a plurality of cell stacks 4 having battery cells 8 arranged within the battery module housing 2 for driving the motor vehicle 80.

[0036] As shown in FIG. 4, the battery system 1 according to FIG. 4 comprises three cell stacks 4, wherein a first cell stack 4 is arranged within a first housing unit 6, a second cell stack 4 is arranged within a second housing unit 6 positively connected to the first housing unit 6, and a third cell stack 4 is arranged between the first and second housing units 2 in an intermediate chamber 24.

[0037] It can furthermore be seen that the two housing units 6 are indirectly positively connected to one another via additional connecting elements 32, wherein the additional connecting elements 32 are positively connected to a first and a second housing unit 6 in joining regions 22, wherein the additional connecting elements 32 are positively connected to a first housing unit 6 via a first side and to a second housing unit 6 via a second side. In the present case, the positive connection is in the form of a weld connection 30′ arranged at the connection points 30.

[0038] FIG. 5 shows a battery system 1 according to aspects of the invention for use in a motor vehicle, according to a third exemplary embodiment in a cross-sectional view according to a cross section along the cross-sectional axis I-I according to FIG. 1.

[0039] As can be seen according to FIG. 5, even in an embodiment without additional connecting elements 32, an intermediate chamber 24 can be provided for accommodating at least one cell stack 4 by means of a corresponding design of the bottom and top surfaces 34, 36 of the housing wall 14 of the housing units 6.

[0040] FIG. 6 shows a motor vehicle comprising a battery system 1 according to aspects of the invention. In the present case, the motor vehicle is designed in the form of an at least partially electrically operated motor vehicle. Preferably, the battery system 1 according to the present invention can be arranged in the transverse direction between two side sills within the motor vehicle 80 and can, for example, be connected, for example screwed, directly to the body of the motor vehicle 80 without additional battery box or the like.

[0041] The above explanation of the embodiments describes the present invention solely in the context of examples.

[0042] Naturally, individual features of the embodiments may be freely combined with one another, if technically meaningful, without leaving the scope of the present invention.