Electrochemical Battery Cell for a Battery Module, Process for Manufacturing a Battery Cell, and Battery Module

• US 20200136109A1
• Filed: 12/26/2019
• Published: 04/30/2020
• Est. Priority Date: 06/27/2017
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: IDIKURT, Tuncay, KLAUS, Christoph, SCHERER, Daniel
• Granted Patent: US 12,040,442 B2
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electrochemical battery cell for a battery module for an electrically drivable motor vehicle, includes a cell housing and a spacer element which is secured to one housing face of the cell housing in order to be supported in an electrically insulating manner on an adjacent cell housing at a distance therefrom. The spacer element includes an electrically insulating insulation layer that is fastened to the housing face of the cell housing, and, for supporting purposes, a tolerance compensating layer which is fastened to the insulation layer and projects therefrom.

Claims

1. An electrochemical battery cell for a battery module for an electrically drivable motor vehicle, comprising:

a cell housing; and

a spacer element secured to a housing side of the cell housing in order to be supportable in an electrically insulating manner on an adjacent cell housing at a distance therefrom, wherein

the spacer element has an electrically insulating insulation layer secured to the housing side of the cell housing and a tolerance compensation layer secured to the insulation layer and projecting therefrom for purpose of support.

2. The battery cell according to claim 1, wherein

the insulation layer and/or the tolerance compensation layer is adhesively bonded in order to be secured.

3. The battery cell according to claim 1, wherein

the insulation layer and/or the tolerance compensation layer is produced from an endless material.

4. The battery cell according to claim 1, wherein

the tolerance compensation layer has a greater layer thickness than that of the insulation layer.

5. The battery cell according to claim 1, wherein

the tolerance compensation layer is formed as at least one elongate spacer strip.

6. The battery cell according to claim 1, wherein

the tolerance compensation layer is formed as precisely two spacer strips spaced apart from and parallel to one another.

7. The battery cell according to claim 6, wherein

each spacer strip is oriented parallel to a longitudinal side of the cell housing.

8. The spacer strip according to claim 5, wherein

the spacer strip is oriented parallel to a longitudinal side of the cell housing.

10. A battery module for an electrically drivable motor vehicle, comprising:

a cell pack having a number of electrochemical battery cells according to claim 1, which are arranged alongside one another along a pack direction between two pack-end-side pressure plates, wherein

each battery cell of the cell pack is supported spaced apart on a cell housing of a respective battery cell arranged adjacent or on one of the two pack-end-side pressure plates.

9. A method for producing a battery cell, comprising:

cutting an insulation layer from a first endless material of a first endless roll;

applying the insulation layer to a housing side of a cell housing;

cutting a tolerance compensation layer from a second endless material of a second endless roll; and

applying the tolerance compensation layer to the insulation layer and/or to the housing side of the cell housing, wherein

the electrically insulating insulation layer secured to the housing side of the cell housing and the tolerance compensation layer secured to the insulation layer and projecting therefrom form a spacer element.