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Method of determining aging state of battery pack, method of controlling battery pack, and operating device

An aging state, battery pack technology, applied in the field of operating devices and vehicles, can solve problems such as battery pack defects, capacity loss, failure, etc.

Active Publication Date: 2021-08-24
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The metal cladding is detrimental to the operation of the battery pack unit and may lead to loss of capacity or may even lead to battery pack defects and its failure
However, such a state cannot be detected using the measurement methods to date

Method used

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  • Method of determining aging state of battery pack, method of controlling battery pack, and operating device
  • Method of determining aging state of battery pack, method of controlling battery pack, and operating device
  • Method of determining aging state of battery pack, method of controlling battery pack, and operating device

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Embodiment Construction

[0028] The following reference Figures 1 to 1 3 Describe the embodiments of the present invention in detail. The same reference numerals are used to designate identical and equivalent and identical or equivalent acting elements and components. Detailed descriptions of identified elements and components are not described wherever they appear.

[0029] The features and other properties shown can be separated from one another as desired and combined with one another as desired without departing from the spirit of the invention.

[0030] figure 1 An embodiment of the operating device 100 according to the invention is shown in the form of a schematic block diagram.

[0031]The operating device 100 has an operating component 101 . For example, within the scope of a hybrid drive, the running component can be formed, for example, by an electric machine or a combination of electric machines. Furthermore, a battery pack 10 is provided which is designed to supply the operating comp...

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PUM

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Abstract

The invention relates to a method for determining the state of aging of a battery pack (10), in particular a lithium-ion battery pack, comprising the following steps: (A) detecting a characteristic curve (20) of the battery pack (10) at a first moment (t1) at least one segment (25); (B) specify and / or determine at least one significant sub-segment (30) or point (33) in the segment (25) of the characteristic curve (20) of the battery pack (10) ); (C) at a second moment (t2) after the first moment (t1) to detect the corresponding significant sub-segment (30) in the segment (25) of the characteristic curve (20) of the battery pack (10) or Point (33); (D) at the first and second instants (t1, t2) determine the significant sub-segment (30) or point in the segment (25) of the characteristic curve (20) of the battery pack (10) (33) the degree of change; and (E) generating an aging degree representing the aging state of the battery pack (10) according to the degree of change.

Description

technical field [0001] The invention relates to a method for determining the state of aging of a battery, in particular a lithium-ion battery, a method for controlling a battery, and an operating device. In particular, the invention also relates to a method for controlling the charging, discharging and / or operating of a battery pack, in particular a lithium-ion battery pack, and a vehicle. Background technique [0002] When using electrical operating devices, a battery pack is often used to supply electrical energy to operating components of the operating device, for example an electric motor or the like, and to operate these operating components as necessary. Such a battery can be a primary battery or also a secondary battery, for example a rechargeable accumulator or the like. Knowledge of the state of aging of the battery pack, which is also reflected by the unevenness of charge, contributes to the optimal operation of such a battery pack, but also to maintenance, rechar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/392H01M10/48
CPCG01R31/392G01R31/388Y02E60/10H01M10/44H01M10/48H01M2220/20G01R31/3646H01M10/0525B60L58/16
Inventor J·贝克尔U·兰格
Owner ROBERT BOSCH GMBH