Busbar assembly and cylindrical power battery module
AssigneeEve Power Co., Ltd.
InventorGuojiang Zhang
Life of this patent
Estimating the term…
Abstract
Provided are a busbar assembly and a cylindrical power battery module. The busbar assembly is used for electrical connection of a cylindrical power battery module. The cylindrical power battery module includes an input copper bar, an output cooper bar and a cells contact system assembly having the corresponding number as submodules. The input copper bar is connected to a cell unit at an input terminal of the cylindrical power battery module, the output copper bar is connected to a cell unit at an output terminal of the cylindrical power battery module, and the cells contact system assemblies are connected in series and in parallel to cell units of the submodules.
Claims20
A busbar assembly for electrical connection of a cylindrical power battery module, wherein the cylindrical power battery module comprises at least one submodule, a submodule of the at least one submodule comprises a plurality of cell units, and the busbar assembly comprises:
- an input copper bar, wherein the input copper bar is connected to a cell unit at an input terminal of the cylindrical power battery module;
- an output copper bar, wherein the output copper bar is connected to a cell unit at an output terminal of the cylindrical power battery module;
- and
- a cells contact system assembly having a corresponding number as the at least one submodule, wherein one submodule is correspondingly connected to one cells contact system assembly to form an electrical unit group, the cells contact system assembly comprises at least one connection piece, a connection piece of the at least one connection piece comprises a plurality of conductive units and a plurality of connection portions, conductive units disposed adjacently at intervals in a first direction are connected through connection portions of the plurality of connection portions, the plurality of conductive units are connected in parallel to cell units disposed adjacently in the first direction, and the plurality of conductive units are connected in series to cell units disposed adjacently in a second direction, wherein a conductive unit of the plurality of conductive units is provided with a convex portion, and the convex portion forms a first buffer portion.
The busbar assembly according to 8, wherein the first end portion comprises input connection portions having a corresponding number as conductive units on a same connection piece.
A cylindrical power battery module, comprising a busbar assembly and at least one submodule, wherein each submodule of the at least one submodule comprises a plurality of cell units, and the busbar assembly is configured to connect the plurality of cell units;
- the busbar assembly comprises:
- an input copper bar, wherein the input copper bar is connected to a cell unit at an input terminal of the cylindrical power battery module;
- an output copper bar, wherein the output copper bar is connected to a cell unit at an output terminal of the cylindrical power battery module;
- and
- a cells contact system assembly having a corresponding number as the at least one submodule, wherein one submodule is correspondingly connected to one cells contact system assembly to form an electrical unit group, the cells contact system assembly comprises at least one connection piece, a connection piece of the at least one connection piece comprises a plurality of conductive units and a plurality of connection portions, conductive units disposed adjacently at intervals in a first direction are connected through connection portions of the plurality of connection portions, the plurality of conductive units are connected in parallel to cell units disposed adjacently in the first direction, and the plurality of conductive units are connected in series to cell units disposed adjacently in a second direction, wherein a connection portion of the plurality of connection portions is a planar structure;
- or a connection portion of the plurality of connection portions is a protruding structure, and the connection portion comprises a second buffer portion.
Dependencies are inferred from the claim text.