Patent ID: 9209496
Filing Date: 2015-12-08
Classification: B07C,H01M,Y02E,Y02P

Abstract:
1. A sorting machine of a battery cell comprising: an inserting unit into which a battery cell is inserted; a measuring unit on which the inserted battery cell is placed; an open circuit voltage (OCV) measuring unit configured to measure an OCV of the battery cell placed on the measuring unit; a loading unit configured to discharge the battery cell placed on the measuring unit by applying a fixed load to the battery cell; a discharge voltage measuring unit configured to measure a discharge voltage of the battery cell discharged by the loading unit; and a control unit configured to sort battery cells placed on the measuring unit into different groups, wherein the control unit is configured to calculate a voltage differential between the OCV and the discharge voltage of each of the battery cells and to sort the battery cells having corresponding voltage differential ranges between the OCV and the discharge voltage into one group, wherein the loading unit is configured to discharge the battery cell for a time period ranging from one second to two seconds; a sorting unit which is configured to move the battery cells of each group sorted by the control unit and load the battery cells in a corresponding group and wherein the control unit and sorting unit sorts the batteries into groups based u on the OCV and the voltage differential between the OCV and the discharge voltage so that batteries having corresponding OCV values and voltage differential values are assembled into the same groups.