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Method for treating electrical energy storage unit

A technology of electric energy storage and electric energy storage system, which is applied in the field of processing (Aufbereitung) electric energy storage unit, which can solve the problems of aging of electric energy storage unit and achieve the effect of improving the service life

Pending Publication Date: 2018-06-29
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical loading also causes aging of the electrical energy storage unit

Method used

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  • Method for treating electrical energy storage unit
  • Method for treating electrical energy storage unit
  • Method for treating electrical energy storage unit

Examples

Experimental program
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Embodiment Construction

[0027] The same reference numerals designate the same device parts or the same method steps in all figures.

[0028] figure 1 A flow chart of the method according to the invention according to a first embodiment is shown. In a first step S1 the electrical energy storage unit is filled with a second quantity of a second electrolyte. This can take place via openings provided for this purpose or used for filling during production, which are opened for this purpose and closed again after filling. Subsequently, in a second step S2 , the maximum charge capacity of the electrical energy storage unit, that is to say the amount of charge that can be stored in the electrical energy storage unit while observing the specified piezoelectric limits, is determined. This is done for example by charging and discharging with a predefined current profile at a predefined temperature between predefined voltage levels. In a third step S3, next, the determined maximum capacity is stored in a data...

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PUM

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Abstract

Disclosed is a method for treating an electrical energy storage unit. The method is described with the steps described below. A second amount of a second electrolyte is introduced in the electrical energy storage unit. After introduction of the second quantity of the second electrolyte, an aging state variable is determined, which represents an aging state of the electrical energy storage unit, and the determined aging state variable is stored in a data memory. Furthermore, a use of the method is described.

Description

technical field [0001] The invention is based on a method for processing electrical energy storage units and a corresponding use of the method. Background technique [0002] The available capacity of a rechargeable electrical energy storage unit, such as a lithium-ion battery pack, is not only subject to cyclic aging but also calendar aging. The storage capacity of the electrical energy storage unit thus becomes smaller and smaller not only when in use but also when not in use. Physical and / or chemical effects such as loss of electrode surfaces, increased charge transfer resistance and reduction in the number of mobile lithium ions affect the aging process Responsible. Mechanical loading also leads to aging of the electrical energy storage unit. In addition, the aging of components not directly involved in the energy storage, for example in the case of lithium-ion batteries, the aging of the adhesive, which leads to a low-resistance connection to the current collector, is...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M50/609
CPCH01M10/4207H01M10/4214H01M10/4242H01M50/609H01M10/42H01M10/425H01M10/44H01M2200/00H01M10/6553Y02E60/10
Inventor A.伊姆雷
Owner ROBERT BOSCH GMBH