Separator for a battery cell and battery cell

A technology for separators and battery packs, applied in the field of separators, to achieve the effects of reducing mechanical stress, reducing the risk of cracks or fractures, and reducing volume changes

Active Publication Date: 2018-01-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A problem in known lithium metal battery cells is dendritic growth of the anode

Method used

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  • Separator for a battery cell and battery cell
  • Separator for a battery cell and battery cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] exist figure 1 A battery cell 2 is schematically shown in . The battery cell 2 comprises a battery housing 3 of prismatic, now square configuration. The battery housing 3 is presently designed to be electrically conductive and is made, for example, of aluminum or stainless steel. However, the battery housing 3 can also be made of an electrically insulating material, for example plastic. Other shapes of the battery housing 3 are also conceivable, for example cylindrical. If the battery cells 2 are designed as pouch cells, a soft foil can also be provided instead of the hard battery housing 3 .

[0034] The battery cell 2 includes a negative terminal 11 and a positive terminal 12 . The voltage provided by the battery cell 2 can be tapped off via the terminals 11 , 12 . Furthermore, the battery cells 2 can also be charged via the terminals 11 , 12 . The terminals 11 , 12 are arranged at a distance from one another on the cover surface of the prismatic battery housing...

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Abstract

The invention relates to a separator (18) for separating an anode (21) and a cathode (22) in a battery cell (2), said separator comprising a base material which has porosity and can be ionically conductive. An electrolyte layer (15) is provided inside the base material of the separator (18), which is formed by a solid electrolyte and which has a lower porosity than the base material of the separator (18). The invention also relates to a battery cell (2) which comprises at least one separator (18) according to the invention.

Description

technical field [0001] The invention relates to a separator for a battery cell for separating an anode and a cathode in a battery cell, the separator comprising a base material having a porosity which can be ionically conductive. The invention also relates to a battery cell comprising at least one separator according to the invention. Background technique [0002] Electrical energy can be stored by means of a battery pack. Batteries convert the energy of chemical reactions into electricity. Here, a distinction is made between primary battery packs and secondary battery packs. Primary batteries have only one functional capability, while secondary batteries, also known as accumulators, can be recharged. The battery here includes one or more battery cells. [0003] In accumulators, in particular so-called lithium-ion battery cells and lithium metal battery cells are used. These battery cells are characterized in particular by high energy density, thermal stability and mini...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01M2/16H01M10/0562H01M50/434H01M50/451H01M50/457
CPCH01M10/0562H01M2300/0068H01M2300/0088Y02E60/10H01M50/46H01M50/451H01M50/457H01M50/434H01M2220/20
InventorS.丹科
OwnerROBERT BOSCH GMBH