Battery management system and electric vehicle

The utility model provides a battery management system and an electric vehicle. The battery management system comprises a host; a plurality of mutually connected battery cells are arranged in the battery pack; the plurality of first acquisition chips are correspondingly connected with the battery cells respectively, and the first acquisition chips are in cascade connection; and the two groups of second acquisition chips are respectively in cascade connection with the host and the plurality of first acquisition chips. According to the battery management system disclosed by the embodiment of the utility model, the second acquisition chip connected with the host is directly connected with the first acquisition chip on the battery cell, so that wire harnesses in the battery module are effectively reduced, and the cost is reduced. 本实用新型提供一种电池管理系统及电动车辆。其中，电池管理系统包括：主机；电池包，所述电池包内设置有多个相互连接的电芯；多个第一采集芯片，分别与各所述电芯对应连接，各所述第一采集芯片之间级联连接；两组第二采集芯片，分别与所述主机和所述多个所述第一采集芯片级联连接。本实用新型实施例的电池管理系统通过将与主机练级的第二采集芯片和电芯上的第一采集芯片直接连接，有效减少了电池模组