EP 4176482 A1 20230510 - METHOD FOR DETERMINING MECHANICAL STRESSES IN A TRACTION ENERGY STORE
Title (en)
METHOD FOR DETERMINING MECHANICAL STRESSES IN A TRACTION ENERGY STORE
Title (de)
TECHNIK ZUR BESTIMMUNG MECHANISCHER SPANNUNGEN IN EINEM TRAKTIONSENERGIESPEICHER
Title (fr)
PROCÉDÉ DE DÉTERMINATION DE CONTRAINTES MÉCANIQUES DANS UN ACCUMULATEUR D'ÉNERGIE DE TRACTION
Publication
Application
Priority
- DE 102020117706 A 20200706
- EP 2021065558 W 20210610
Abstract (en)
[origin: WO2022008157A1] The invention relates to a method for determining mechanical stresses (200) in an electrical traction energy store (110) of a motor vehicle (1100). According to one aspect of the device, a device (100) comprises a traction energy store (110) for storing electrical energy having at least one cell module (120), which comprises in each case a housing (122) and a plurality of secondary cells (300) which are arranged in the housing (122) and are electrically conductively connected to a power interface (124) of the cell module (120). The device (100) also comprises at least one determination unit (130) which is designed to determine, on the basis of an internal resistance of the secondary cells (300) in the at least one cell module (120), a mechanical stress (200) in the secondary cells (300) at different times, a first value of the internal resistance corresponding to a first state of the mechanical stress (200) and a second value of the internal resistance, which is greater than the first value of the internal resistance, corresponding to a second state of the mechanical stress (200) which is greater than the mechanical stress (200) in the first state.
IPC 8 full level
H01M 10/42 (2006.01); B60L 58/16 (2019.01); B60L 58/18 (2019.01); H01M 10/052 (2010.01); H01M 10/48 (2006.01)
CPC (source: EP US)
B60L 3/12 (2013.01 - EP US); B60L 58/10 (2019.01 - EP); B60L 58/16 (2019.01 - EP US); H01M 10/052 (2013.01 - EP); H01M 10/4207 (2013.01 - EP); H01M 10/425 (2013.01 - EP); H01M 10/482 (2013.01 - EP US); H01M 10/486 (2013.01 - US); B60L 2240/545 (2013.01 - EP); B60L 2240/547 (2013.01 - EP); H01M 2010/4271 (2013.01 - EP); H01M 2200/20 (2013.01 - EP US); H01M 2220/20 (2013.01 - EP US); Y02E 60/10 (2013.01 - EP); Y02T 10/70 (2013.01 - EP)
Citation (search report)
See references of WO 2022008157A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020117706 A1 20220113; DE 102020117706 B4 20230420; BR 112022025394 A2 20230124; CN 115735291 A 20230303; EP 4176482 A1 20230510; US 2023282898 A1 20230907; WO 2022008157 A1 20220113
DOCDB simple family (application)
DE 102020117706 A 20200706; BR 112022025394 A 20210610; CN 202180043882 A 20210610; EP 2021065558 W 20210610; EP 21732265 A 20210610; US 202118015047 A 20210610