Hard shell cell housing with vapour barrier layer

Patent metadata

Field	Value
Publication number	US-9748528-B2
Application number	US-201214364799-A
Country	US
Kind code	B2
Filing date	Nov 15, 2012
Priority date	Dec 15, 2011
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A hard shell cell housing for an individual alkali metal cell includes a housing main body with an interior space that is configured to accommodate cell components of the individual alkali metal cell, and a housing cover configured to close off the interior space. The housing main body is formed at least substantially from plastic, and further includes at least one vapor barrier layer.

First claim

The invention claimed is:

1. A hard shell cell housing for an individual alkali metal cell, comprising:
a housing main body that is formed at least substantially from plastic, and that includes:
an interior space configured to accommodate cell components of an individual alkali metal cell;
an opening into the interior space; and
at least one first connecting element that extends around the opening, and that includes a first vapor barrier layer; and

a housing cover that, in a closed state, is configured to close off the interior space of the housing main body, each first connecting element of the housing main body configured to engage with a respective second connecting element of the housing cover to form a tongue-and-groove plug-in connection between the housing main body and the housing cover in the closed state of the housing cover:
the respective second connecting element including a second vapor barrier layer; and
each first connecting element and the respective second connecting element arranged such that the first vapor barrier layer and the second vapor barrier layer press against each other in the closed state of the housing cover.

2. The hard shell cell housing as claimed in claim 1 , wherein the individual alkali metal cell is a lithium-ion cell.

3. The hard shell cell housing as claimed in claim 1 , wherein the interior space of the housing main body is configured to accommodate an individual cell roll.

4. The hard shell cell housing as claimed in claim 1 , wherein the housing cover is formed at least substantially from plastic.

5. The hard shell cell housing as claimed in claim 1 , wherein (i) the housing main body or (ii) the housing main body and the housing cover are formed at least substantially from a plastic which comprises at least one polymer selected from the group consisting of polyolefins, polyphenylene sulfides, and combinations thereof.

6. The hard shell cell housing as claimed in claim 1 , further comprising:
at least one vapor barrier layer that covers portions of inner and outer surfaces of either (i) the housing main body or (ii) the housing main body and of the housing cover.

7. The hard shell cell housing as claimed in claim 1 , wherein the first vapor barrier layer and second vapor barrier layer is formed by vapor depositing, by sputtering, by galvanic coating, by spraying, or by immersing.

8. The hard shell cell housing as claimed in claim 1 , wherein the first vapor barrier layer and the second vapor barrier layer each include at least one of aluminum, chromium, and silicon.

9. A hard shell cell housing for an individual alkali metal cell, comprising:
a housing main body that includes:
an interior space configured to accommodate cell components of an individual alkali metal cell; and
at least one vapor barrier layer; and

a housing cover configured to close off the interior space of the housing main body;
wherein the housing main body is formed at least substantially from plastic; and
wherein the at least one vapor barrier layer is integrated into (i) the plastic of the housing main body, or (ii) the plastic of the housing main body and a plastic of the housing cover, such that the at least one vapor barrier layer substantially completely surrounds the interior space of the housing main body in a closed state, and such that at least a portion of material forming the vapor barrier layer is intermingled with (i) the plastic of the housing main body, or (ii) the plastic of the housing main body and a plastic of the housing cover.

10. A hard shell cell housing for an individual alkali metal cell, comprising:
a housing main body that is formed at least substantially from plastic, and that includes:
an interior space configured to accommodate cell components of an individual alkali metal cell;
an opening into the interior space; and
at least one first connecting element that extends around the opening, and that includes a first vapor barrier layer;

a housing cover that, in a closed state, is configured to close off the interior space of the housing main body, each first connecting element of the housing main body configured to engage with a respective second connecting element of the housing cover to form a tongue-and-groove plug-in connection between the housing main body and the housing cover in the closed state of the housing cover:
the respective second connecting element including a second vapor barrier layer; and
each first connecting element and the respective second connecting element arranged such that the first vapor barrier layer and the second vapor barrier layer press against each other in the closed state of the housing cover; and

at least one vapor barrier layer that at least one of:
covers portions of inner and outer surfaces of either (i) the housing main body or (ii) the housing main body and of the housing cover; and
is integrated into portions of either (i) the housing main body or (ii) the housing main body and of the housing cover.

11. The hard shell cell housing as claimed in claim 1 , wherein the vapor barrier layer is a superhydrophobic, nanostructured layer.

12. The hard shell cell housing as claimed in claim 6 , wherein the at least one vapor barrier layer is disposed directly on material of (i) the housing main body or of (ii) the housing main body and the housing cover.

13. The hard shell cell housing as claimed in claim 6 , wherein the at least one vapor barrier layer covers an entirety of the inner and outer surfaces.

14. The hard shell cell housing as claimed in claim 1 , further comprising:
at least one vapor barrier layer that is integrated into portions of either (i) the housing main body or (ii) the housing main body and of the housing cover.

15. The hard shell cell housing as claimed in claim 14 , wherein the at least one vapor barrier layer is integrated into an entirety of (i) the housing main body or (ii) the housing main body and of the housing cover.

Assignees

• Bosch Gmbh Robert
• Samsung Sdi Co Ltd

Inventors

• Wöhrle Thomas
• Fetzer Joachim
• Fink Holger

Classifications

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/159

  Metals · CPC title

• H01M50/164

  having a layered structure · CPC title

• H01M50/16

  Organic material · CPC title

• H01M50/141

  for protecting against humidity · CPC title