Systems and methods for evaluating electrolyte wetting and distribution

A non-transitory computer-readable medium having stored thereon computer-readable instructions that, upon being executed by one or more processors, cause the one or more processors to:

• determine acoustic features at two or more locations of a battery cell, the acoustic features based on one or more of acoustic signals travelling through at least one or more portions of the battery cell during one or more points in time or responses to the acoustic signals obtained during one or more points in time, wherein the one or more points in time correspond to one or more stages of electrolyte distribution in the battery cell;
• generate a score based on the acoustic features, the score being an index of homogeneity of electrolyte distribution in the battery cell;
• and
• determine one or more characteristics of the battery cell using the score, the one or more characteristics including at least ideal soaking times for the battery cell.

A system comprising:

• one or more processors;
• and
• memory including instructions that, upon being executed by the processor one or more processors, cause the system to:
• determine acoustic features at two or more locations of the battery cell, the acoustic features based on one or more of acoustic signals travelling through at least one or more portions of the battery cell during one or more points in time or responses to the acoustic signals obtained during one or more points in time, wherein the one or more points in time correspond to one or more stages of electrolyte distribution in the battery cell;
• generate a score based on the acoustic features, the score being an index of homogeneity of electrolyte distribution in the battery cell;
• determine one or more characteristics of the battery cell using the score, the one or more characteristics including at least ideal soaking times for the battery cell;
• and
• optimize one or more process parameters for manufacturing the battery cell based on the one or more characteristics.