EP 3602673 A1 20200205 - DIAGNOSIS OF BATTERIES
Title (en)
DIAGNOSIS OF BATTERIES
Title (de)
DIAGNOSE VON BATTERIEN
Title (fr)
DIAGNOSTIC DE BATTERIES
Publication
Application
Priority
- DE 102017205561 A 20170331
- EP 2018057726 W 20180327
Abstract (en)
[origin: WO2018178050A1] The invention relates to a diagnostic device (10) for critical changes, particularly pressure changes, gas development and temperature changes, in batteries having multi-layered structures, to a battery system (50) having such a diagnostic device (10) and to a method (100) for diagnosing critical changes of such batteries by means of the diagnostic device. According to the invention, a diagnostic device (10) is provided for determining critical changes to physical properties relative to a target state in battery cells (12) having a structure comprising a plurality of layers (14), wherein the layers (14) are frictionally connected to each other, having at least one receiver (18) and, optionally, additionally, a transmitter (16) for arrangement on the housing (20) and/or cell contact (22) of the battery cell (12), wherein the receiver (18) is suitable for receiving acoustic plate waves (24) and/or acoustic torsion waves (26) and for transmitting a corresponding signal (28) to an evaluating unit (30), which is provided in order to evaluate one or more parameters (32), which are characteristic for an actual state of the battery cell (12), and for comparing them to at least one previously defined threshold (34), wherein exceeding or falling short of the threshold (34) is evaluated as identification of battery cells having a critical change to the physical properties thereof, wherein, in the case of the diagnostic device having a transmitter, the transmitter (16) is suitable for exciting the acoustic plate waves (24) and/or the acoustic torsion waves (26) in the battery cell (12) having a propagation direction along the layers (14).
IPC 8 full level
H01M 10/42 (2006.01); G01R 31/36 (2020.01); H01M 10/48 (2006.01)
CPC (source: EP US)
G01N 29/11 (2013.01 - US); G01R 31/28 (2013.01 - US); G01R 31/36 (2013.01 - US); H01M 10/4285 (2013.01 - EP US); H01M 10/48 (2013.01 - EP US); G01N 2291/048 (2013.01 - US); Y02E 60/10 (2013.01 - EP)
Citation (search report)
See references of WO 2018178050A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018178050 A1 20181004; CN 110574215 A 20191213; DE 102017205561 A1 20181004; EP 3602673 A1 20200205; US 2021194070 A1 20210624
DOCDB simple family (application)
EP 2018057726 W 20180327; CN 201880023418 A 20180327; DE 102017205561 A 20170331; EP 18717252 A 20180327; US 201816498614 A 20180327