Battery cell with cell composite and manufacturing method thereof

A technology of battery cells and composites, applied in the directions of large-sized cells/battery packs, small-sized cells/battery packs, batteries, etc., can solve the problem of reducing the flammability of battery cells and increasing the cost and/or weight of battery systems And other issues

Pending Publication Date: 2022-04-22
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This comes at the expense of energy density and often increases the cost and / or weight of the battery system
Furthermore, such peripherals only serve to prevent dangerous moments from occurring, but do not reduce the flammability of battery cells when they occur

Method used

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  • Battery cell with cell composite and manufacturing method thereof
  • Battery cell with cell composite and manufacturing method thereof
  • Battery cell with cell composite and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0041] exist figure 1 , the battery cell 1 is shown in oblique view in the left region. The battery cells 1 are here formed as so-called pouch cells 2 . This means that the cell compound 3 is hermetically encapsulated by the soft envelope 4 . The cell composite 3 is constructed in multiple layers and has alternating layers of separators 5 , cathodes 6 and anodes 7 . In the embodiment shown, the soft envelope 4 itself has a three-layer structure. In this case, the inner first layer 8 is made of a polymer, eg polypropylene. The second layer 9 is a metal layer where aluminum or its alloys can be used. The third layer 10 of the soft envelope 4 forms the outer side 11 of the soft envelope 4 and at the same time forms the functional layer 12 . The functional layer 12 here provides improved flame resistance and contains a flame-retardant substance 13 for this purpose. In the state of complete assembly, the soft envelope 4 composed of one or more parts forms the casing 14, and t...

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PUM

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Abstract

The invention relates to a battery cell (1) having a cell composite (3), which has at least one anode (7), one cathode (6) and a separator (5) arranged therebetween and which is encapsulated by a housing (14), a functional layer (12) being additionally provided, which at least partially encapsulates the cell composite (3) and contains a flame-retardant substance (13).

Description

technical field [0001] The invention relates to a battery cell having a cell composite which has at least one anode, a cathode and a separator arranged between them and is enclosed by a housing. Background technique [0002] It is known from the prior art that batteries, such as in particular lithium-ion batteries, consist of at least one battery cell or a plurality of battery cells. Furthermore, the battery cell preferably has a plurality of individual layers. These layers are formed as electrodes in the form of cathodes and anodes with a separator arranged therebetween. [0003] During the manufacture of battery cells, the layers can be stacked on top of each other to form a cell pack, or assembled by winding to form a cell pack. [0004] One challenge in the electrochemical storage of energy, which can be performed, for example, with the aforementioned lithium-ion batteries, is to ensure the safety of the battery cells during operation. Various unusual or safety events...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/143H01M50/10H01M50/126H01M10/658
CPCH01M50/143H01M50/10H01M50/126H01M10/658H01M50/124H01M50/129H01M50/122H01M50/1243H01M50/1245H01M2220/20Y02E60/10
Inventor P·迈斯特C·博利X·齐T·达格尔
Owner VOLKSWAGEN AG
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