Method for Producing a Battery Module, Battery Module, Traction Battery, and Electrically Operable Motor Vehicle

Abstract

A method for producing a battery module for a traction battery of an electrically operable motor vehicle includes providing battery cells, providing a holding device for the battery cells, which has receiving chambers for the battery cells, at least partially coating an outer side of the battery cells and/or an inner side of the receiving chambers with a microencapsulated adhesive, and inserting the battery cells into the receiving chambers, wherein the insertion movement causes a force to be exerted on the microencapsulated adhesive, by way of which force the microencapsulated adhesive is activated and cured to fix the battery cells in the receiving chambers.

Claims

1-7. (canceled)

8. A method of producing a battery module for a traction battery of an electrically operable motor vehicle, the method comprising: providing battery cells, providing a holding device for the battery cells, wherein the holding device has receiving chambers for the battery cells, at least partially coating an outer face of the battery cells and/or an inner face of the receiving chambers with a microencapsulated adhesive, and inserting the battery cells into the receiving chambers, wherein an inserting motion exerts a force on the microencapsulated adhesive that activates and cures the microencapsulated adhesive for fixing of the battery cells in the receiving chambers.

9. The method according to claim 8, wherein the battery cells are round cells.

10. The method according to claim 9, wherein the receiving chambers are cylindrical.

11. The method according to claim 8, wherein the holding device is manufactured from a plastic.

12. A battery module for a traction battery of an electrically operable motor vehicle, wherein the battery module is produced by the method according to claim 8.

13. A traction battery for an electrically operable motor vehicle, the traction battery comprising at least one battery module according to claim 12.

14. A motor vehicle comprising the traction battery according to claim 13.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a schematic diagram of a first process step for manufacture of a battery module.

[0014] FIG. 2 is a schematic diagram of a second process step for manufacture of the battery module.

DETAILED DESCRIPTION OF THE DRAWINGS

[0015] In the figures, elements that are the same and have the same function are given the same reference numerals.

[0016] FIG. 1 and FIG. 2 show process steps for production of a battery module. The battery module may be used, for example, in a traction battery for an electrically operable motor vehicle. For this purpose, battery cells 1 and a holding device 2 or a carrier component are provided. All that are shown here are a battery cell 1 and a receiving chamber 3 of the holding device 2, into which the battery cell 1 can be inserted in an insertion direction E. The battery cell 1 especially takes the form of a round cell. The receiving chamber 3 especially has a round cross section, i.e. has been formed as a cylindrical cavity.

[0017] The receiving chamber 3 has an opening 5 at its base 4, via which the battery cell 1 is contactable in the inserted state (see FIG. 2). In order to be able to hold the battery cell 1 in the holding device 2, the battery cell 1 is fixed in the receiving chamber 3. For this purpose, prior to the insertion of the battery cell 1 into the receiving chamber 3, an inner face 6 of the receiving chamber 3 is coated at least in regions with a microencapsulated adhesive 7. For example, the inner face 6 of side walls 8 and the inner face 6 of the base 4 are coated with the microencapsulated adhesive. Possible thickness tolerances can be compensated for by specific design of a surface of the holding device 2, for example minimal ribbing and compression of the ribs, or via the material selection.

[0018] On insertion of the battery cell 1 into the receiving chamber 3, an outer face 9 of the battery cell 1 then exerts shear stress on the inner face 6 of the side walls 8, and compressive stress on the inner face 6 of the base 4. This activates and cures the microencapsulated adhesive 7, as a result of which the battery cell 1 is fixed in the receiving chamber 3. The adhesive 7 is thus activated solely by a force acting in the form of compressive stress and/or shear stress.