公开(公告)号：US20210126293A1

公开(公告)日：2021-04-29

申请号：US17017461

申请日：2020-09-10

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu WANG ,  Long HE ,  Huajun SUN ,  Zhipei LU ,  Jianhua ZHU ,  Yan ZHU ,  Shichao HU

IPC: H01M10/42 ,  H01M2/10 ,  H01M2/36 ,  H01M10/0525 ,  H01M10/0585

Abstract: The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

公开(公告)号：US20210126231A1

公开(公告)日：2021-04-29

申请号：US17019852

申请日：2020-09-14

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu WANG ,  Long HE ,  Huajun SUN ,  Jianhua ZHU ,  Zhipei LU ,  Yan ZHU ,  Shichao HU

IPC: H01M2/10 ,  B60L50/64 ,  H01M2/36

Abstract: A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups , and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.