EP-4736259-A1 - BATTERY HOUSING COMPONENT FOR A BATTERY HOUSING, BATTERY HOUSING FOR RECEIVING A PLURALITY OF BATTERY COMPONENTS AND BATTERY HAVING A BATTERY HOUSING

Abstract

The present invention relates to a battery housing component (10) for a battery housing (2), having a plurality of receiving devices (20) for receiving a multiplicity of battery components (3). The battery housing component (10) has a number of through openings (30) corresponding to the plurality of receiving devices (20), said through openings being formed in a base (11) of the battery housing component (10), wherein in a top view of the base (11) of the battery housing component (10), one through opening (30) is in each case at least partially enclosed by one receiving device (20), and wherein the battery component (10) has a sealing layer (40) for sealing the through openings (30), wherein the sealing layer (40) is integrally bonded to the base (11) of the battery housing component (10). 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 plurality of battery components (3).

Inventors

• WOLF, HARTMUT
• TORRES, Gines

Assignees

• Kautex Textron GmbH & Co. Kg

Dates

Publication Date

20260506

Application Date

20240628

Claims (1)

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 through openings (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 through opening (30) is at least partially enclosed by a respective receiving device (20), wherein the battery housing component (10) is characterized by the following feature: the battery housing component (10) has a sealing layer (40) for sealing the through openings (30), wherein the sealing layer (40) is materially connected to the base (11) of the battery housing component (10). 2. Battery housing component (10) according to claim 1, characterized in that the sealing layer (40) comprises a material with a melt flow index of greater than or equal to 35 g/10min. 3. Battery housing component (10) according to claim 1 or 2, 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 sealing layer (40) is materially connected to a connecting surface (111) of the base (11) of the battery housing component (10) facing away from the receiving volume (). 4. Battery housing component (10) according to one of the preceding claims, characterized in that the sealing layer (40) is connected to the bottom (11) of the battery housing component (10) in such a way that the through openings (30) are completely closed by the sealing layer (40). 5. Battery housing component (10) according to one of the preceding claims, characterized in that the sealing layer (40) has at least one reinforcing rib (41) which extends from the sealing layer (40) into a free cross-sectional area (31) of a through opening (30). 6. 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). 7. Battery housing component (10) according to one of the preceding claims, characterized by the following features: the battery housing component (10) has a bottom (50) which is at least indirectly connected to the bottom (11) of the battery housing component (10); and a cavity (60) for receiving a gas generated in the receiving volume (4) is formed between the sealing layer (40) and the bottom (50). 8. Battery housing component (10) according to claim 7, characterized in that the underbody (50) is materially bonded to at least indirectly connected to the bottom (11) of the battery housing component (10). 9. Battery housing component (10) according to claim 7 or 8, characterized in that the underbody (50) has at least one outlet opening (51) for discharging the gas generated in the receiving volume (4) and/or received in the cavity (60). 10. Battery housing component (10) according to one of claims 7 to 9, characterized in that the battery housing component (10) has at least one support rib (70) which is arranged between the sealing layer (40) and the underbody (50). 11. 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 (7) 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. 12. Battery (1), comprising: a battery housing (2) according to claim 11; and a plurality of battery components (3), wherein in each case one battery component (3) is inserted into a respective receiving device (20) of the battery housing component (10). 13. Battery (1) according to claim 12, 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. 14. Battery (1) according to claim 13, characterized in that the battery component (3) is materially connected to the receiving surface (22) by means of an adhesive, wherein the adhesive has a heat resistance up to a temperature of 600 °C. 15. Motor vehicle, comprising a battery (1) according to one of claims 12 to 14. 16. Injection molding method for producing a battery housing component (10) according to one of claims 1 to 10 by means of an injection molding tool, wherein the injection molding tool has a first tool half and a second tool half, and wherein the injection molding method comprises the following method steps: Injecting a fibre-reinforced plastic into the injection moulding tool in the closed position; moving the first tool half of the injection moulding tool so that a free space is formed between the first tool half and the fibre-reinforced plastic in the second tool half; and Injecting a fiber-free plastic into the injection molding tool so that the fiber-reinforced plastic in the second half of the tool is overmolded by the fiber-free plastic.

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 through openings 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 through opening is at least partially enclosed by a respective receiving device. The battery housing component has a sealing layer for sealing the through openings, wherein the sealing layer is materially connected to the base of the battery housing component. When reference is made below to a proper use or intended use of a battery housing component, this use or use is to be understood as, for example, a use or use 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 jet escaping from a battery component during the chemical decomposition of the battery components breaks through the sealing layer in the region of a through-opening, so that a gas located in the receiving volume is discharged from the receiving volume in an improved, controlled manner. This simultaneously reduces the pressure within the receiving volume and lowers the temperature. In the normal operating mode of the battery, that is, during operation without irreversible chemical decomposition process, the sealing layer seals the passage openings in a fluid-tight manner despite the overpressures and negative pressures generated by the immersion cooling, in particular by the two-phase immersion cooling, in a receiving volume of the battery housing. In the event of a negative pressure in a receiving volume of a battery housing which has a battery housing component according to the invention, the sealing layer in the region of the through openings in the base of the battery housing component is deformed in the direction of the receiving volume. In other words, the sealing layer in the region of the through openings in the base of the battery housing component bulges in the direction of the receiving volume of the battery housing. In the event of an overpressure in a receiving volume of a battery housing which has a battery housing component according to the invention, the sealing layer in the region of the Through openings in the bottom of the battery housing component are deformed in the direction away from the receiving volume. In other words, the sealing layer in the region of the through openings in the bottom of the battery housing component bulges in the direction away from the receiving volume. A through opening which is enclosed by a receiving device in a plan view of the bot