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US 12,603,332 B2Granted
Battery pack comprising cell stack structure using flexible printed circuit board
AssigneeLG Energy Solution, Ltd.
InventorJae Hyung Kim
Life of this patent
Estimating the term…
Abstract
Discussed are a battery pack including a cell stack structure using a flexible printed circuit board (FPCB), and more specifically, to a battery pack that forms various stack structures by connecting battery cells through an FPCB and stacking the battery cells in a desired stacked state. The battery pack includes at least two or more stacked battery cells; a flexible printed circuit board (FPCB) configured to electrically interconnect the battery cells; and a battery protection circuit configured to protect the battery cells, wherein the FPCB comprises a cell connection part connecting the battery cells in a predetermined connection state.
Claims15
A battery pack comprising:
- at least two or more stacked battery cells;
- a flexible printed circuit board (FPCB) configured to electrically interconnect the battery cells;
- and
- a battery protection circuit configured to protect the battery cells, wherein the FPCB comprises:
- a cell connection part connecting the battery cells in a predetermined connection state;
- terminal access parts respectively connected to each electrode terminal of the battery cells;
- and
- protection circuit connection part connection areas configured to electrically connect the FPCB and the battery protection circuit through protection circuit connection parts, respectively, wherein a number of the protection circuit connection parts vary according to a number or an arrangement of the at least two or more stacked battery cells that are connected to the FPCB, and locations and a number of the protection circuit connection part connection areas vary according to a location of the battery protection circuit or the arrangement of the at least two or more stacked battery cells that are connected to the FPCB,
- wherein the cell connection part is formed in a form of a connection path pattern connecting the terminal access parts in the connection state, and
- wherein the cell connection part extending from at least one of the terminal access parts includes at least three line connections that connect to at least three other terminal access parts, respectively.
7 more elements
A method of manufacturing a battery pack, the method comprising:
- a cell arrangement operation of arranging battery cells in a predetermined arrangement so that each electrode terminal of at least two battery cells faces a flexible printed circuit board (FPCB);
- a terminal access part forming operation of welding electrode terminals of the battery cells to the FPCB to form terminal access parts, each of which is a connection area with each battery cell, on the FPCB;
- a cell connection part forming operation of forming a cell connection part connecting the terminal access parts to the FPCB in a connection state so as to connect the battery cells in a predetermined connection state;
- a protection circuit connection part connection operation of connecting protection circuit connection parts to protection circuit connection part connection areas, respectively, of the FPCB;
- a cell stacking operation of stacking the battery cells in a stacked state in which the battery cells are to be stacked while connecting the battery cells in the predetermined connection state through the terminal access part forming operation and the cell connection part forming operation;
- and
- a protection circuit connection operation of connecting the battery protection circuit to the protection circuit connection parts connected to the FPCB in the protection circuit connection part connection operation, and interconnecting the battery cells and the battery protection circuit,
- wherein the forming of the cell connection part in the cell connection part forming operation comprises forming a connection path pattern connecting the terminal access parts formed on the FPCB,
- wherein the cell connection part extending from at least one of the terminal access parts includes at least three line connections that connect to at least three other terminal access parts, respectively, and
- wherein a number of the protection circuit connection parts vary according to a number or an arrangement of the at least two or more stacked battery cells that are connected to the FPCB, and locations and a number of the protection circuit connection part connection areas vary according to a location of the battery protection circuit or the arrangement of the at least two or more stacked battery cells that are connected to the FPCB.
7 more elements
Dependencies are inferred from the claim text.