Bus bar for battery packs
AssigneeAtieva, Inc.
InventorsJames Jan, Richard J. Biskup, Benson Tsai
Life of this patent
Estimating the term…
Abstract
A battery pack has bus bars at one end, freeing the other end of the battery pack for cooling or other arrangements. A plurality of battery cells has first terminals of the battery cells at first ends of the battery cells. Portions of second terminals of the battery cells are at the first ends of the battery cells. The first ends of the battery cells are in a coplanar arrangement. A plurality of bus bars is assembled proximate to the first ends of the battery cells. The bus bars are coupled to the first terminals and the second terminals of the battery cells at the first ends of the battery cells to place the battery cells in one of a series connection, a parallel connection or a series and parallel connection.
Claims12
A battery pack comprising:
- a plurality of battery cells having first terminals of the battery cells at first ends of the plurality of battery cells and portions of second terminals of the battery cells at the first ends of the plurality of battery cells, with the first ends of the plurality of battery cells being in a coplanar arrangement;
- a plurality of bus bars disposed proximate to the first ends of the plurality of battery cells and coupled to the first terminals and the portions of the second terminals of the plurality of battery cells to place the plurality of battery cells in one of a series connection, a parallel connection, or a series and parallel connection, wherein the plurality of bus bars is arranged as co-planar interleaved fingers such that the fingers are coplanar, and wherein a first one of the plurality of bus bars, having first fingers, is a first component and a second one of the plurality of bus bars, having second fingers, is a second component, the first and second components arranged to be at differing electrical potentials;
- and
- a first plurality of bond wires connecting the first fingers of the first one of the plurality of bus bars to the first terminals of a first subset of the plurality of battery cells;
- a second plurality of bond wires connecting the second fingers of the second one of the plurality of bus bars to the portions of the second terminals of the first subset of the plurality of battery cells;
- and
- a third plurality of bond wires connecting the second fingers of the second one of the plurality of bus bars to the first terminals of a second subset of the plurality of battery cells.
A battery pack comprising:
- a plurality of bus bars;
- a plurality of battery cells, with first terminals of the battery cells coplanar and coupled to the plurality of bus bars, and second terminals of the battery cells each having a portion proximate to and coupled to the plurality of bus bars such that the bus bars couple the plurality of battery cells in one of a parallel connection, a series connection, or a parallel and series connection;
- and
- wherein a first plurality of bond wires connects a first one of the plurality of bus bars to the first terminals of a first group of battery cells;
- wherein a second plurality of bond wires connects a second one of the plurality of bus bars to the portions of the second terminals of the first group of battery cells;
- and
- wherein a third plurality of bond wires connects the second one of the plurality of bus bars to the first terminals of a second group of battery cells;
- and
- wherein the plurality of bus bars includes a first bus bar having first fingers coupled by the first plurality of bond wires to the first terminals of the first group of battery cells and a second bus bar having second fingers coupled by the second plurality of bond wires to the portions of the second terminals of the first group of battery cells, wherein the first bus bar with first fingers is a first component and the second bus bar with second fingers is a second component arranged to be at a differing electrical potential from the first component, wherein the first fingers are interleaved with the second fingers, and wherein the first fingers and second fingers are coplanar.
Dependencies are inferred from the claim text.