Traction battery of a motor vehicle

Abstract

Traction battery (10) of a motor vehicle, comprising a battery frame (11) mounted or assembled from supports (19, 19a, 19b), comprising a plurality of battery modules (18) accommodated in the battery frame (11), each comprising a plurality of battery cells (17) which are accommodated in a module housing (14) of the respective battery module (18), wherein the respective module housing (14) is mounted or assembled from side walls (21, 21a, 21b) and a bottom wall (20), and wherein the bottom wall (20) of the respective module housing (14) is designed as a cooling plate for cooling the battery cells (17), comprising a cover plate (12) connected to the battery frame (11), comprising an underrun protection plate (13) connected to the battery frame (11), characterized in thatthat the bottom wall (20) of the respective module housing (14) protrudes on two opposite narrow sides from the side walls (21b) of the respective module housing (14) and has a supply connection (24) on a first side and a return connection for coolant on an opposite second side, the battery modules (18) are accommodated in the battery frame (11) such that the narrow sides of the module housings (14) of the battery modules (18) are aligned and thus the supply connections (24) and the return connections are each in a row, a support (19a) of the battery frame (11), which runs parallel to the row of supply connections (24), forms a supply channel (27) coupled to the supply connections (24), an opposite support (19a) of the battery frame (11), which runs parallel to the row of return connections, forms a return channel coupled to the return connections.

Claims

[1] Traction battery (10) of a motor vehicle, with a battery frame (11) mounted or assembled from supports (19, 19a, 19b), with a plurality of battery modules (18) accommodated in the battery frame (11) and each comprising a plurality of battery cells (17), which are accommodated in a module housing (14) of the respective battery module (18), wherein the respective module housing (14) is mounted or assembled from side walls (21, 21a, 21b) and a bottom wall (20), and wherein the bottom wall (20) of the respective module housing (14) is designed as a cooling plate for cooling the battery cells (17), with a cover plate (12) connected to the battery frame (11), with an underrun protection plate (13) connected to the battery frame (11), characterized by , that the bottom wall (20) of the respective module housing (14) protrudes on two opposite narrow sides relative to the side walls (21b) of the respective module housing (14) and has a flow connection (24) on a first side and a return connection for coolant on an opposite second side, the battery modules (18) are accommodated in the battery frame (11) in such a way that the narrow sides of the module housings (14) of the battery modules (18) are aligned and thus the supply connections (24) and the return connections are each in a row, a support (19a) of the battery frame (11), which runs parallel to the row of flow connections (24), forms a flow channel (27) coupled to the flow connections (24), an opposite support (19a) of the battery frame (11), which runs parallel to the row of return connections, forms a return channel coupled to the return connections. [2] Traction battery (10) according to claim 1, characterized by that the bottom wall (20) of the respective module housing (14) has an upper plate (20a) and a lower plate (20b), wherein the upper plate (20a) and the lower plate (20b) abut one another and are connected to one another in first sections, and wherein the upper plate (20a) and the lower plate (20b) are spaced from one another in second sections and form cooling channels (25). [3] Traction battery (10) according to claim 1 or 2, characterized by that spring-elastic deformable elements (15) are positioned between the bottom walls (20) of the battery modules (18) and the underrun protection plate (13). [4] Traction battery (10) according to claim 3, characterized by , that a first section (15a) of the respective resiliently deformable element (15) is connected to the bottom wall (20) of at least one battery module (18) and / or to at least one support (19a) of the battery frame (11), second sections (15b) of the respective spring-elastic deformable element (15) rest loosely on the underrun protection plate (13). [5] Traction battery (10) according to one of claims 1 to 4, characterized by , that the side walls (21a, 21b) of the respective module housing (14) are screwed together, the bottom wall (20) of the respective module housing (14) is screwed to the side walls (21a, 21b) of the respective module housing (14), the bottom wall (20) and side walls (21b) of the respective module housing (14) are screwed to supports (19a) of the battery frame (11), the cover plate (12) is screwed to the battery frame (11), the underrun protection plate (13) is screwed to the battery frame (11). [6] Traction battery (10) according to claims 4 and 5, characterized bythat the respective resiliently deformable element (15) is screwed at its first section (15a) to the bottom wall (20) of the respective battery module (18) and / or to the respective support (19a) of the battery frame (11).

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