US 12,259,442 B2
Apparatus and method for testing a cell contact of battery cells of a battery module
Bogdan Paraschiv, Toronto (CA); and Karim Dehkordi, Trabuco Canyon, CA (US)
Assigned to Acculogic Inc., Markham (CA)
Filed by Acculogic Inc., Markham (CA)
Filed on Jul. 18, 2022, as Appl. No. 17/866,657.
Claims priority of application No. 102022113467.9 (DE), filed on May 27, 2022.
Prior Publication US 2023/0384388 A1, Nov. 30, 2023
Int. Cl. G01R 31/385 (2019.01); G01R 31/36 (2020.01); G01R 31/389 (2019.01); G01R 31/66 (2020.01); G01R 33/06 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01)
CPC G01R 31/389 (2019.01) [G01R 31/3644 (2013.01); G01R 31/385 (2019.01); G01R 31/66 (2020.01); G01R 33/066 (2013.01); H01M 10/4285 (2013.01); H01M 10/482 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An apparatus for testing a cell contact of battery cells of a battery module that are electrically connected in parallel via a contacting system, the apparatus comprising:
a sensor positioning system for positioning a sensor device at a plurality of test points of the battery module, wherein the sensor positioning system is configured to move the sensor device along a longitudinal axis (X), a transverse axis (Y) orthogonal to the longitudinal axis (X), and a vertical axis (Z) orthogonal to both the longitudinal axis (X) and the transverse axis (Y); and
a current generation circuit for generating a battery cell current (I), wherein the battery cell current is a discharging current from the battery cell or a charging current into the battery cell;
wherein the sensor device includes at least one field sensor, and
wherein the field sensor is configured to detect a field in a region of one of the plurality of test points after the sensor device is positioned at the one of the plurality of test points, which is generated by the battery cell current (I) generated with the current generation circuit, wherein the field is a magnetic field or an electric field.