| US 7,548,821 B2 | ||
| Battery management system and driving method thereof | ||
| Yong-Jun Tae, Yongin-si (Korea, Republic of); Soo-Seok Choi, Yongin-si (Korea, Republic of); Young-Jo Lee, Yongin-si (Korea, Republic of); Han-Seok Yun, Yongin-si (Korea, Republic of); Se-Wook Seo, Yongin-si (Korea, Republic of); Gye-Jong Lim, Yongin-si (Korea, Republic of); Beom-Gyu Kim, Yongin-si (Korea, Republic of); and Ho-Young Park, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung SDI Co., Ltd., Suwon-si (Korea, Republic of) | ||
| Filed on Jun. 29, 2007, as Appl. No. 11/771,733. | ||
| Claims priority of application No. 10-2006-0100472 (KR), filed on Oct. 16, 2006. | ||
| Prior Publication US 2008/0091362 A1, Apr. 17, 2008 | ||
| Int. Cl. G01R 31/36 (2006.01) | ||
| U.S. Cl. 702—63 | 20 Claims |
| 1. A battery management system that manages a battery comprising at least one pack comprising a plurality of cells, the system
comprising:
a sensing unit to measure a voltage, a current, and a temperature of each of the cells; and
a micro controller unit (MCU) to receive the voltage, the current, and the temperature of each cell, to calculate an estimated
cell voltage, by applying a pack voltage sensing error and a cell voltage deviation to each cell voltage, to calculate an
estimated cell resistance, by adding a pack assembly resistance to an internal resistance of the cell, and to calculate a
pack output, by using the estimated cell voltage and the estimated cell resistance,
wherein the pack assembly resistance is a resistance of elements of the pack other than the cells.
|