Conductor plate for a vehicle battery module
In a conductor plate for a vehicle battery module, the vehicle battery module is adapted to accommodate a plurality of longitudinal battery cells. The battery cells are arranged in parallel with respect to their longitudinal axes, and each battery cell has a first end and an opposite second end with respect to its longitudinal axis. The conductor plate includes: a base part; and a plurality of longitudinal members. Each of the plurality of longitudinal members includes a first end and a second end, the first ends of the longitudinal members being connected to the base part, the base part and the plurality of longitudinal members being substantially arranged in a common plane. The longitudinal members are arranged spaced from each other such that an interval between two of the plurality of longitudinal members matches to an interval between two rows of the battery cells.
1. A vehicle battery module for accommodating a plurality of longitudinal battery cells, the battery cells arranged in parallel with respect to their longitudinal axes, each battery cell having a first end and an opposite second end with respect to its longitudinal axis, comprising:
a conductor plate adapted to electrically couple the first ends of the battery cells, the conductor plate including:
a base part, and
a plurality of longitudinal members, each longitudinal member including a first end and a second end, the first ends of the longitudinal members being connected to the base part, the base part and the plurality of longitudinal members being substantially arranged in a common plane;
wherein the longitudinal members are arranged spaced from each other such that an interval between two of the plurality of longitudinal members matches to an interval between two rows of the battery cells.
2. The vehicle battery module according to claim 1 , wherein the conductor plate is molded into a battery frame of the vehicle battery module, the battery frame being adapted to receive the first ends of the battery cells.
3. The vehicle battery module according to claim 1 , wherein the first end of each of the battery cells is connected to the conductor plate via a corresponding wire bond.
4. The vehicle battery module according to claim 3 , wherein each longitudinal member includes a plurality of tabs, each tab extending from a corresponding longitudinal member in the common plane and in a direction perpendicular to a direction from the first end to the second end of the corresponding longitudinal member, the tabs of one longitudinal member being arranged in an interval matching to an interval of the battery cells of one of the rows, and wherein the wire bonds are bonded to the tabs.
5. The vehicle battery module according to claim 3 , wherein each of the wire bonds is dimensioned such that the corresponding wire bond fuses when a predetermined electrical current flowing from the first end of the corresponding battery cell through the wire bond to the conductor plate exceeds a predetermined current.
6. The vehicle battery module according to claim 1 , further comprising:
a further conductor plate adapted to electrically couple the second ends of the battery cells;
a cooling plate thermally coupled to the further conductor plate; and
a thermal layer sandwiched between the further conductor plate and the cooling plate.
7. The vehicle battery module according to claim 6 , wherein the thermal layer includes an electrically insulating material.
8. The vehicle battery module according to claim 6 , wherein the thermal layer includes a thermally conducting material.
9. The vehicle battery module according to claim 6 , further comprising a graphite foil sandwiched between the second ends of the battery cells and the further conductor plate.
10. The vehicle battery module according to claim 9 , wherein the graphite foil includes a plurality of holes, each hole being arranged in a vicinity of the second end of a corresponding one of the battery cells, wherein the second ends of the battery cells are coupled to the further conductor plate via bond wires extending through the holes of the graphite foil.
11. The vehicle battery module according to claim 6 , wherein the thermal layer includes an electrically insulating and thermally conducting material.
12. The vehicle battery module according to claim 1 , wherein the battery cells have a cylindrical shape and an electrical terminal of a first polarity at the first end and an electrical terminal of a second polarity at the second end.