Battery housing for at least one battery cell having a ceramic or glass-like or metallic protective coating, and motor vehicle

Patent metadata

Field	Value
Publication number	US-2021036284-A1
Application number	US-202016936833-A
Country	US
Kind code	A1
Filing date	Jul 23, 2020
Priority date	Aug 1, 2019
Publication date	Feb 4, 2021
Grant date	—

Abstract

A housing for at least one battery cell of an electrical energy accumulator of an at least partially electrically operated motor vehicle, having an interior of the battery housing, which is designed for arranging the at least one battery cell, and having at least one protective coating formed on at least one housing wall of the battery housing and facing toward the interior, wherein the protective coating is ceramic or glass-like or metallic and is designed to generate a degassing flow in the event of degassing of the battery cell from the interior of the battery housing. The disclosure furthermore relates to a motor vehicle.

First claim

1 . A battery housing comprising:
at least one battery cell of an electrical energy accumulator of an at least partially electrically operated motor vehicle, having an interior of the battery housing, which is designed for arranging the at least one battery cell, and having at least one protective coating formed on at least one housing wall of the battery housing and facing toward the interior, and the protective coating is ceramic or glass-like or metallic and is designed to generate a degassing flow in the event of degassing of the battery cell from the interior of the battery housing.

2 . The battery housing as claimed in claim 1 , wherein the battery housing has a degassing opening, which is designed to discharge the degassing flow from the interior into an environment of the battery housing.

3 . The battery housing as claimed in claim 2 , wherein the degassing opening has a bursting membrane, which is designed to burst in the event of a predetermined degassing pressure in the interior and to discharge the degassing flow into the environment.

4 . The battery housing as claimed in claim 1 , wherein the battery housing has an additional degassing element which is designed to be arranged between the battery cell and at least one housing wall in the interior.

5 . The battery housing as claimed in claim 4 , wherein the degassing element is angled at a first end of the degassing element and/or at a second end of the degassing element opposite to the first end.

6 . The battery housing as claimed in claim 1 , wherein the at least one coated housing wall is opposite to at least one degassing device of the battery cell.

7 . The battery housing as claimed in claim 1 , wherein the battery housing is made of aluminum.

8 . The battery housing as claimed in claim 1 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

9 . The battery housing as claimed in claim 1 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

10 . The battery housing as claimed in claim 2 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

11 . The battery housing as claimed in claim 3 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

12 . The battery housing as claimed in claim 4 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

13 . The battery housing as claimed in claim 5 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

14 . The battery housing as claimed in claim 6 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

15 . The battery housing as claimed in claim 7 , wherein the protective coating is dimensionally stable during degassing of the battery cell.

16 . The battery housing as claimed in claim 2 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

17 . The battery housing as claimed in claim 3 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

18 . The battery housing as claimed in claim 4 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

19 . The battery housing as claimed in claim 5 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

20 . The battery housing as claimed in claim 6 , wherein a cover element of the battery housing and/or a first side element of the battery housing and/or a second side element of the battery housing and/or a base element of the battery housing has the protective coating.

Assignees

• Audi Ag

Inventors

• Schüssler Martin
• Kruse Lars

Classifications

• H01M50/3425 Primary

  in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member · CPC title

• H01M50/222

  Inorganic material · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M50/224

  Metals · CPC title

• H01M50/131

  characterised by physical properties, e.g. gas permeability, size or heat resistance · CPC title