Feedthrough

Patent metadata

Field	Value
Publication number	US-10044010-B2
Application number	US-201514883240-A
Country	US
Kind code	B2
Filing date	Oct 14, 2015
Priority date	Apr 15, 2013
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A feed-through includes at least one main body which has at least one opening through which at least one conductor in an electrically insulating material comprising or consisting of a sealing glass is fed, wherein the main body comprises or consists of a light metal and/or a light metal alloy, with an integral bond being formed between the light metal and/or the conductor and the sealing glass, wherein the sealing glass comprises or consists of a titanate glass and has only a small phosphate proportion.

First claim

What is claimed is:

1. A feedthrough for a storage device, comprising:
at least one base body, wherein the base body has at least one opening, said base body one of including and consisting of at least one of a light metal and a light metal alloy;
at least one conductor in an electrically insulated material one of comprising and consisting of a sealing glass fed through said at least one opening, said sealing glass being material bonded with at least one of said base body and said conductor, wherein said sealing glass one of includes and consists of titanium glass, and wherein said sealing glass is a titanate glass one of including and consisting of the following components in weight-% on an oxide basis:
B 2 O 3 0-<3;
Li 2 O 0-3;
Al 2 O 3 0-2;
BaO 0-<11;
CaO 0-1;
CuO 0-<7;
Fe 2 O 3 0-<5;
K 2 O 10-27;
MgO 0-<0.5;
Na 2 O 12-22;
Nb 2 O 3 0-0.5;
P 2 O 5 0-3;
PbO 0-<0.5;
SO 3 0-0.5;
Sb 2 O 3 0-<7;
SiO 2 24-44;
SnO 2 0-<4;
SrO 0-<2;
TiO 2 5-28;
V 2 O 5 0-13;
ZnO 0-<0.5;
ZrO 2 0-1; and
Bi 2 O 3 0-19.

2. The feedthrough according to claim 1 , wherein said conductor is a substantially pin-shaped conductor, said light metal is one of aluminum, magnesium, and titanium, and said light metal alloy is one of an aluminum alloy, a magnesium alloy, a titanium alloy, and AlSiC.

3. The feedthrough according to claim 2 , wherein said substantially pin-shaped conductor one of includes and consists of a light metal, a light metal alloy, aluminum, an aluminum alloy, copper, CuSiC, a copper alloy, gold, a gold alloy, silver, a silver alloy, NiFe, an NiFe-casing having a copper core, and a cobalt-iron alloy.

4. The feedthrough according to claim 1 , wherein said titanate glass includes at least one of the following components in weight-% on an oxide basis:
Al 2 O 3 0-<2;
SrO 0.2-1.9;
V 2 O 5 >5-13; and
Bi 2 O 3 0-18.

5. The feedthrough according to claim 1 , wherein said titanate glass one of includes and consists of the following components in weight-% on an oxide basis:
B 2 O 3 0-<3;
Li 2 O 1-3;
Al 2 O 3 0-<2;
BaO 0-4;
CaO 0-1;
CuO 0-<6;
Fe 2 O 3 0-<0.5;
K 2 O 10-20;
MgO 0-<0.5;
Na 2 O 12-20;
Nb 2 O 3 0-<0.5;
P 2 O5 1-3;
PbO 0-<0.5;
SO 3 0-<0.5;
Sb 2 O 3 0-<0.5;
SiO2 28-37;
SnO 2 0-<0.5;
SrO 0-<0.5;
TiO 2 13-28;
V 2 O 5 >5-10;
ZnO 0-<0.5;
ZrO 2 0-<0.5; and
Bi 2 O 3 0-18.

6. The feedthrough according to claim 1 , wherein said electrically insulating material consists of a multi-layer structure having a top layer and a bottom layer, said top layer and said bottom layer one of including and consisting of said titanate glass.

7. The feedthrough according to claim 6 , wherein said multi-layer structure includes at least 3 layers, said at least 3 layers including said top layer, said bottom layer, and a middle layer, said middle layer one of including and consisting of a phosphate glass.

8. The feedthrough according to claim 7 , wherein said phosphate glass one of includes and consists of the following components in mol-%:
P 2 O 5 35-50 mol-%;
Al 2 O 3 0-14 mol-%;
B 2 O 3 2-10 mol-%;
Na 2 O 0-30 mol-%;
M 2 O 0-20 mol-%, whereby M is one of K, Cs, and Rb;
PbO 0-10 mol-%;
Li 2 O 0-45 mol-%;
BaO 0-20 mol-%; and
Bi 2 O 3 0-10 mol-%.

9. The feedthrough according to claim 1 , further comprising at least one of a top layer and a bottom layer which one of include and comprise a titanate glass, wherein said electrically insulating material includes at least two glass or glass ceramic materials including a first glass or glass ceramic material having a first coefficient of expansion and a second glass or glass ceramic material having a second coefficient of expansion, said first coefficient of expansion and said second coefficient of expansion being different from each other, wherein said first glass or glass ceramic material is selected so that said first coefficient of expansion is adapted to a coefficient of expansion of the material of said base body, wherein said second glass or glass ceramic material is selected so that said second coefficient of expansion is adapted to a coefficient of expansion of the material of said conductor.

10. The feedthrough according to claim 9 , wherein said first coefficient of expansion of said first glass or glass ceramic material is in a range of 16 to 25×10 −6 K −1 in the temperature range of 20° C. to 300° C., wherein said first glass or glass ceramic material is at least one of the following glass materials: a silicate-titanate, a sulpho-phosphate, a telluride, a boride, a vanadate, a fluoride, a phosphate, a silicate, an alkali, an earth alkali, any of the aforementioned materials including a filler for expansion adaptation, an Fe doping agent, a Cr doping agent, a Co doping agent, and a V doping agent.

11. The feedthrough according to claim 10 , wherein said second coefficient of expansion of said second glass or glass ceramic material is in the range of 12 to 18×10 −6 K −1 in the temperature range of 20° C. to 300° C.

12. The feedthrough according to claim 10 , wherein said electrically insulating material includes at least one of a first glass or glass ceramic material and a second glass or glass ceramic material and at least one of a top layer and a bottom layer, said electrically insulating material being at least one of a multicomponent glass and a glass pellet.

13. The feedthrough according to claim 1 , wherein said sealing glass has a coefficient of expansion in a range of 17·10 −6 /K to 25·10 −6 /K in the temperature range of 20° C. to 300° C. and a transformation temperature Tg in the range of 300 to 500° C.

14. The feedthrough according to claim 1 , wherein at least one of said light metal and said light metal alloy is at least one of pre-treated and coated prior to creating said material bond.

15. The feedthrough according to claim 14 , wherein at least one of said light metal and said light metal alloy is at least one of degreased, stripped of a surface-adhering oxide layer, chromate treated, phosphated, coated with silicate, coated with titanium oxide, and coated with zirconium oxide prior to creating said material bond.

16. The feedthrough according to claim 1 , wherein said feedthrough is a component of at least one of a storage device, a battery, a lithium-ion battery, a lithium-ion accumulator and a capacitor.

17. A method of producing a feedthrough, comprising the steps of:
providing a conductor and a base body, said base body one of including and consisting of at least one of a light metal and a light metal alloy;
providing a sealing glass that one of includes and consists of a titanate glass;
grinding and granulating said titanate glass;
producing a molded body from said grinded and granulated titanate glass that has a suitable opening for said conductor;
assembling a feedthrough from said conductor, said base body and said molded body; and
creating a material bond between at least one of said base body and said conductor and said sealing glass, wherein said material bond is created using heat, and wherein said sealing glass is a titanate glass one of including and consisting of the following components in weight-% on an oxide basis:
B 2 O 3 0-<3;
Li 2 O 0-3;
Al 2 O 3 0-2;
BaO 0-<11;
CaO 0-1;
CuO 0-<7;
Fe 2 O 3 0-<5;
K 2 O 10-27;
MgO 0-<0.5;
Na 2 O 12-22;
Nb 2 O 3 0-0.5;
P 2 O 5 0-3;
PbO 0-<0.5;
SO 3 0-0.5;
Sb 2 O 3 0-<7;
SiO 2 24-44;
SnO 2 0-<4;
SrO 0-<2;
TiO 2 5-28;
V 2 O 5 0-13;
ZnO 0-<0.5;
ZrO 2 0-1; and
Bi 2 O 3 0-19.

18. The metho

Assignees

• Schott Ag

Inventors

• Dahlmann Ulf
• Kroll Frank
• Pichler-Wilhelm Sabine
• Wimmer Sabrina
• Witte Jörg

Classifications

• C03C3/066 Primary

  containing zinc · CPC title

• H01M50/197

  having a layered structure · CPC title

• H01M50/198

  characterised by physical properties, e.g. adhesiveness or hardness · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• H01M10/0525

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