SORTING MACHINE OF BATTERY CELL AND SORTING METHOD THEREOF
First Claim
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;
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.
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Accused Products
Abstract
A battery cell sorting machine includes 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, 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.
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Citations
19 Claims
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1. A sorting machine of a battery cell comprising:
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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; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery cell sorting method comprising:
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determining if a battery cell is inserted into a sorting machine; primarily measuring an open circuit voltage (OCV) of a battery cell; secondarily measuring a discharge voltage of the battery cell; calculating a voltage differential between the OCV and the discharge voltage of the battery cell; and sorting battery cells having substantially the same OCV and corresponding voltage differential ranges. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of forming a battery pack comprising:
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measuring an open circuit voltage (OCV) of a battery cell; measuring a discharge voltage of the battery cell; calculating a voltage differential between the OCV and the discharge voltage of the battery cell; identifying battery cells having substantially the same OCV or corresponding voltage differential ranges; and forming a battery pack with battery cells having substantially the same OCV or corresponding voltage differential ranges. - View Dependent Claims (16, 17, 18, 19)
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Specification