EP-4736258-A1 - BATTERY HOUSING COMPONENT FOR A BATTERY HOUSING, BATTERY HOUSING FOR RECEIVING A LARGE NUMBER OF BATTERY COMPONENTS, AND BATTERY HAVING A BATTERY HOUSING

EP4736258A1EP 4736258 A1EP4736258 A1EP 4736258A1EP-4736258-A1

Abstract

The present invention relates to a battery housing component (10) for a battery housing (2), having a large number of receiving devices (20) for receiving a plurality of battery components (3). The battery housing component (10) has a number of recesses (30) which corresponds to the large number of receiving devices (20), the recesses being formed in a base (11) of the battery housing component (10), wherein, in a plan view of the base (11) of the battery housing component (10), each recess (30) is at least partially surrounded by a respective receiving device (20). The recesses (30) each have a recess base (31) and at least one side wall (32), wherein the side walls (32) are each integrally connected to the base (11) of the battery housing component (10) and to the associated recess bases (31), and wherein the side walls (32) each have extension component, which runs orthogonally with respect to a surface defined by the base (11). The present invention also relates to a battery housing (2) having a battery housing component (10), and to a battery (1) having a battery housing (2) and a large number of battery components (3).

Inventors

WOLF, HARTMUT
ILS, André
PECHAN, ALEXANDER
Strack, Mario

Assignees

Kautex Textron GmbH & Co. Kg

Dates

Publication Date: 20260506
Application Date: 20240628

Claims (1)

patent claims 1. Battery housing component (10) for a battery housing (2), having a plurality of receiving devices (20) for receiving a plurality of battery components (3); and a number of recesses (30) corresponding to the plurality of receiving devices (20), which are formed in a base (11) of the battery housing component (10), wherein in a plan view of the base (11) of the battery housing component (10), a recess (30) is at least partially enclosed by a respective receiving device (20), wherein the recesses (30) each have a recess base (31) and at least one side wall (32), wherein the side walls (32) are each materially connected to the base (11) of the battery housing component (10) and to the associated recess bases (31), and wherein the side walls (32) each have an extension component which runs orthogonally to a surface spanned by the base (11). 2. Battery housing component (10) according to claim 1, characterized in that the recess bottom (31) of at least one recess (30) has, at least in sections, a thickness extension which is less than or equal to the thickness extension of the bottom (11) of the battery housing component (10). 3. Battery housing component (10) according to claim 1 or 2, characterized in that the side wall (32) of at least one recess (30) has, at least in sections, a thickness extension which is less than or equal to the thickness extension of the bottom dens (11) of the battery housing component (10) and/or is less than or equal to the thickness extension of the recess bottom (31) of the recess (30). 4. Battery housing component (10) according to one of the preceding claims, characterized in that the side wall (32) of at least one recess (30) has a thickness of less than or equal to 1 mm, preferably less than or equal to 0.5 mm and particularly preferably less than or equal to 0.3 mm. 5. Battery housing component (10) according to one of the preceding claims, characterized in that the recess bottom (31) of at least one recess (30) runs at least partially parallel to the bottom (11) of the battery housing component (10). 6. Battery housing component (10) according to one of the preceding claims, characterized in that the side wall (32) and the recess bottom (31) of a recess (30) enclose an angle of less than or equal to 90 ° with each other. 7. Battery housing component (10) according to one of the preceding claims, characterized by the following features: the battery housing component (10) at least partially delimits a receiving volume (4) for receiving the plurality of battery components (3); and the recess base (31) of at least one recess (30) is curved in the direction of the receiving volume (4) of the battery housing component (10). 8. Battery housing component (10) according to one of the preceding claims, characterized by the following features: the battery housing component (10) at least partially delimits a receiving volume (4) for receiving the plurality of battery components (3); and the recess bottom (31) of at least one recess (30) has a support elevation (35) which extends from an inner surface (311) of the recess bottom (31) in the direction of the receiving volume (4) of the battery housing component (10). 9. Battery housing component (10) according to claim 8, characterized in that the support elevation (35) is designed as a rib (36) or as a bead (37). 10. Battery housing component (10) according to one of the preceding claims, characterized in that at least one receiving device (20) has at least one receiving elevation (21) which extends from an inner surface (112) of the base (11) of the battery housing component (10) into a receiving volume (4) at least partially delimited by the battery housing component (10). 11. Battery housing component (10) according to one of the preceding claims, characterized by the following features: the battery housing component (10) has a bottom (40) which is at least indirectly connected to the bottom (11) of the battery housing component (10); and a cavity (50) for receiving a gas generated in the receiving volume (4) is formed between a rear side (111) of the bottom (11) of the battery housing component (10) and the bottom (40). 12. Battery housing component (10) according to claim 11, characterized in that the underbody (40) has at least one outlet opening (41) for discharging the gas generated in the receiving volume (4) and/or received in the cavity (50). 13. Battery housing (2) for accommodating a plurality of battery components (3), comprising: a battery housing component (10) according to one of the preceding claims; and a battery housing cover (6) which is connected to the battery housing component (10) in such a way that a receiving volume (4) for accommodating the plurality of battery components (3) is formed. 14. Battery (1), comprising: a battery housing (2) according to claim 13; and a plurality of battery components (3), wherein in each case a battery component (3) is inserted into a respective receiving device (20) of the battery housing component (10). 15. Battery (1) according to claim 14, characterized in that at least one battery component (3) is materially connected to a receiving surface (22) of the receiving device (21) in which the battery component (3) is inserted. 16. Battery (1) according to claim 15, characterized in that the battery component (3) is materially connected to the receiving surface (22) by means of a heat-resistant adhesive. 17. Motor vehicle, comprising a battery (1) according to one of claims 14 to 16.

Description

Battery housing component for a battery housing, battery housing for accommodating a plurality of battery components and battery with a battery housing The present invention relates to a battery housing component for a battery housing, a battery housing for accommodating a plurality of battery components and a battery with a battery housing. A battery, in particular a traction battery for storing energy in a motor vehicle, has a large number of battery components, for example battery cells, which enter into an irreversible chemical decomposition process above a certain temperature and in the process release a large amount of the stored energy through oxidation in a short time. An initially closed battery cell builds up pressure and bursts at a predetermined point, at which point a hot gas jet emerges at high speed and fills a storage volume of a battery casing with gas. The pressure in the storage volume caused by the gas that collects in the storage volume must be relieved in order to prevent uncontrolled escape of the gas from the battery casing. In battery casings known from the state of the art, the gas escapes through an opening or a predetermined breaking point in a wall of the battery casing when a predetermined overpressure is exceeded. The invention is based on the object of providing a battery housing component which enables an improved controlled release of gas generated from a battery housing and at the same time enables immersion cooling, in particular two-phase immersion cooling. The object underlying the present invention is achieved by a battery housing component with the features of claim 1. Advantageous embodiments of the battery housing component are described in the claims dependent on claim 1. More specifically, the problem underlying the present invention is solved by a battery housing component for a battery housing, wherein the battery housing component has a plurality of receiving devices for receiving a plurality of battery components and a number of recesses corresponding to the plurality of receiving devices, which are formed in a base of the battery housing component. In a plan view of the base of the battery housing component, a recess is at least partially enclosed by a respective receiving device. The recesses each have a recess base and at least one side wall, wherein the side walls are each materially connected to the base of the battery housing component and to the associated recess bases, and wherein the side walls each have an extension component that runs orthogonal to a surface spanned by the base. When reference is made below to an intended use or intended application of a battery housing component, this use or application means, for example, a use or application to be understood as a battery housing component for a battery housing of a battery with a plurality of battery components (e.g. battery cells). A battery housing component designed in this way has the advantage that the battery housing component, when used as intended, enables immersion cooling, in particular two-phase immersion cooling of battery components, and at the same time enables improved protection against uncontrolled gas escape from a receiving volume of a battery housing during an irreversible chemical decomposition process of the battery components. The gas escaping from a battery component during the chemical decomposition of the battery components is initially absorbed in a depression until the escaping gas breaks through the depression in the region of the side wall and/or in the region of the depression base due to the existing pressure and temperature conditions. As a result, a gas located in the receiving volume is led out of the receiving volume in an improved, controlled manner. Furthermore, the pressure within the receiving volume is simultaneously reduced and the temperature is lowered. In the normal operating mode of the battery, that is to say during operation without an irreversible chemical decomposition process, immersion cooling, in particular two-phase immersion cooling, can be operated without any problems in the receiving volume of the battery housing component. A further advantage of the battery housing component according to the invention is that it can be produced by means of an extrusion process from, for example, fiber-reinforced plastics, wherein the thickness extension of the material walls forming the recesses can be reproduced with improved accuracy. The battery housing component at least partially defines a receiving volume for accommodating the plurality of battery components. The depressions are designed to accommodate a gas that is generated in the receiving volume. In other words, a gas that is generated in the receiving volume can be accommodated, at least temporarily, in the depression volumes delimited by the depressions. The receiving volume at least partially delimited by the battery housing component is fluidly connected to the recess volumes delimited by