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Method for producing an electrode unit for a battery cell and electrode unit

An electrode unit, battery pack technology, applied in battery pack components, electrical components, secondary batteries, etc., can solve the problems of electrode expansion, delamination, offset, etc., to achieve high processing speed and improve safety.

Pending Publication Date: 2019-05-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Depending on the state of charge and the state of aging of the electrode unit, swelling of the electrode can occur, which in a fully wound electrode unit can lead to offsets, delamination and heterogeneity in the area of ​​the rounds

Method used

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  • Method for producing an electrode unit for a battery cell and electrode unit
  • Method for producing an electrode unit for a battery cell and electrode unit
  • Method for producing an electrode unit for a battery cell and electrode unit

Examples

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Embodiment Construction

[0046] In the subsequent description of embodiments of the invention, identical or similar elements are identified with the same reference numerals, a repeated description of these elements being omitted in individual cases. The figures only schematically show the subject matter of the invention.

[0047] figure 1 A schematic diagram of a battery cell 2 is shown. The battery cell 2 comprises a housing 3 which is configured prismatically, in the present invention cuboidally. The housing 3 is embodied in an electrically conductive manner according to the invention and is made, for example, of aluminum.

[0048] The battery cell 2 includes a negative terminal 11 and a positive terminal 12 . The voltage provided by the battery cells 2 can be tapped off via the terminals 11 , 12 . Furthermore, the battery cells 2 can also be charged via the terminals 11 , 12 .

[0049] Arranged within the housing 3 of the battery cell 2 is an electrode unit 10 , which is embodied in the invent...

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Abstract

The invention relates to a method for producing an electrode unit for a battery cell. The method includes following steps: substance-to-substance bonding of contact lugs (35, 36) of a plurality of plate-shaped segments of a first electrode (21, 22) to a strip-shaped first separator layer (18); substance-to-substance bonding of a strip-shaped second separator layer (19) to the contact lugs (35, 36)of the segments of the first electrode (21, 22) or to the first separator layer (18) such that a strip-shaped composite element (50) is produced, wherein an active material (41, 42) of the segments of the first electrode (21, 22) is surrounded by the first separator layer (18) and by the second separator layer (19); and arrangement of a plurality of plate-shaped segments of a second electrode (21, 22) on the composite element (50). The invention further relates to an electrode unit for a battery cell, produced by the method according to the invention.

Description

technical field [0001] The invention relates to a method for producing an electrode unit for a battery cell, wherein a plurality of plate-shaped segments of a first electrode are materially connected to a strip-shaped first separator, in particular is bonding. The invention also relates to an electrode unit for a battery cell, which is produced according to the method according to the invention. Background technique [0002] Electric energy can be stored by means of a battery pack. Batteries convert the energy of chemical reactions into electricity. In this case, a distinction is made between primary and secondary batteries. Primary batteries can only be operated once, while secondary batteries, also known as accumulators, can be recharged. In accumulators, in particular so-called lithium-ion battery cells are used. The lithium-ion battery cells are also distinguished by high energy density, thermal stability and very low self-discharge. [0003] Lithium-ion battery ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/058H01M10/0585H01M10/0587H01M2/16H01M10/0525
CPCH01M10/0459H01M10/0525H01M10/058H01M10/0585H01M10/0587Y02E60/10H01M50/461Y02P70/50H01M10/0583
Inventor M.德拉D.绍尔泰格S.波勒J.黑罗尔德
Owner ROBERT BOSCH GMBH
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