Thermally conductive polymer separator

Patent metadata

Field	Value
Publication number	US-2016359209-A1
Application number	US-201415104417-A
Country	US
Kind code	A1
Filing date	Dec 1, 2014
Priority date	Dec 19, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

A lithium cell coil for a lithium cell, which includes an anode a cathode, and a separator situated between the anode and the cathode. To enable a use of lithium cells, for example, lithium-ion cells, in high-performance applications, the separator includes one or multiple layers, the layer or the layers of the separator being heat conducting and the separator including at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive. In addition, the invention relates to a separator, an electrical insulation layer, and a manufacturing method therefor, and also a lithium cell equipped therewith.

First claim

1 - 15 . (canceled)

16 . A lithium cell coil for a lithium cell, comprising:
an anode; a cathode; and a separator situated between the anode and the cathode; wherein the separator includes at least one layer, the at least one layer of the separator being heat conducting, and wherein the separator includes at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive.

17 . The lithium cell coil of claim 16 , wherein the cell coil includes an electrical insulation layer, the insulation layer including at least one layer, the at least one layer of the insulation layer being heat conducting, the insulation layer including at least one polymer layer which contains at least one heat conducting, electrically insulating, inorganic additive.

18 . The lithium cell coil of claim 16 , wherein the at least one additive includes at least one of spherical particles and flaky particles, or is formed therefrom.

19 . The lithium cell coil of claim 16 , wherein the at least one additive is selected from the group including boron nitride, magnesium oxide, aluminosilicate, aluminum oxide, aluminum nitride, and mixtures thereof.

20 . The lithium cell coil of claim 16 , wherein the at least one polymer layer contains ≧10 wt. % of the at least one additive in relation to the total weight of the at least one polymer layer.

21 . The lithium cell coil of claim 16 , wherein the at least one polymer layer includes at least one polymer which is selected from the group of non-halogenated and/or halogenated polyolefins and mixtures thereof.

22 . The lithium cell coil of claim 16 , wherein at least one of the separator and the insulation layer is a multilayer composite.

23 . The lithium cell coil of claim 22 , wherein at least one of the separator and the insulation layer additionally includes at least one further porous polymer layer, which includes at least one other polymer and/or at least one other heat conducting, electrically insulating, inorganic additive.

24 . The lithium cell coil of claim 22 , wherein at least one of the separator and the insulation layer additionally includes at least one heat conducting, lithium-ion-conducting, and/or porous ceramic layer.

25 . A separator for a lithium cell coil or a lithium cell, comprising:
at least one layer, wherein the at least one layer is of a separator and is heat conducting, the separator including at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive, wherein the lithium cell coil or the lithium cell includes an anode and a cathode, wherein the separator is situated between the anode and the cathode.

26 . The separator of claim 25 , wherein the lithium cell coil or the lithium cell includes an electrical insulation layer, the insulation layer including at least one layer, the at least one layer of the insulation layer being heat conducting, the insulation layer including at least one polymer layer which contains at least one heat conducting, electrically insulating, inorganic additive.

27 . An electrical insulation layer for a lithium cell coil or a lithium cell, comprising:
at least one layer, wherein the at least one layer is of an insulation layer and is heat conducting, the insulation layer including at least one polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive; wherein the lithium cell coil or the lithium cell includes an anode and a cathode, and a separator situated between the anode and the cathode, wherein the separator includes the at least one layer, the at least one layer of the separator being heat conducting.

28 . The insulation layer of claim 27 , wherein the lithium cell coil or the lithium cell includes an electrical insulation layer, the insulation layer including at least one layer, the at least one layer of the insulation layer being heat conducting, the insulation layer including at least one polymer layer which contains at least one heat conducting, electrically insulating, inorganic additive.

29 . A lithium cell, comprising:
at least one of the following:
at least one lithium cell coil, including an anode, a cathode; and a separator situated between the anode and the cathode, wherein the separator includes at least one layer, the at least one layer of the separator being heat conducting, and wherein the separator includes at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive;
a separator including at least one layer, wherein the at least one layer is heat conducting, the separator including at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive, wherein the lithium cell includes an anode and a cathode, wherein the separator is situated between the anode and the cathode; and
an electrical insulation layer cell, including at least one layer, wherein the at least one layer is of an insulation layer and is heat conducting, the insulation layer including at least one polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive, wherein the lithium cell includes an anode and a cathode, and a separator situated between the anode and the cathode, wherein the separator includes the at least one layer, the at least one layer of the separator being heat conducting; and
a heat conducting and metallic cell housing having at least one side wall, wherein the at least one cell coil is introducible or introduced into the cell housing, a lateral outer surface of the at least one cell coil is in thermal contact with at least one side wall inner surface of the cell housing.

30 . A method for manufacturing at least one of a lithium cell coil, a separator, an electrical insulation layer, and a lithium cell, the method comprising:
mixing at least one heat conducting, electrically insulating, inorganic additive, in particular in the form of a powder, into at least one polymer; and forming a porous or dense polymer layer from the mixture from the mixing task;
wherein the at least one lithium cell coil, includes an anode, a cathode; and a separator situated between the anode and the cathode, wherein the separator includes at least one layer, the at least one layer of the separator being heat conducting, and wherein the separator includes at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive;
wherein the a separator includes at least one layer, wherein the at least one layer is heat conducting, the separator including at least one porous polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive, wherein the lithium cell includes an anode and a cathode, wherein the separator is situated between the anode and the cathode;
wherein the electrical insulation layer cell, includes at least one layer, wherein the at least one layer is of an insulation layer and is heat conducting, the insulation layer including at least one polymer layer, which contains at least one heat conducting, electrically insulating, inorganic additive, wherein the lithium cell includes an anode and a cathode, and a separator situated between the anode and the cathode, wherein the separator includes the at least one layer, the at least one layer of the separator being heat conducting; and
wherein the lithium cell, includes at least one layer, wherein the at least one layer is of an insulation layer and is heat co

Assignees

• Bosch Gmbh Robert

Inventors

• Schmiederer Dirk
• Bader Maximilian Oscar

Classifications

• H01M10/653 Primary

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/0525

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

• H01M10/0587

  of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title

• H01M50/119

  Metals · CPC title

• H01M2/166

  Electricity · mapped topic