US 11,705,592 B2
Battery module and aircraft with a battery module
Gergely György Balazs, Budapest (HU); Tibor Debreceni, Budapest (HU); Péter Dudás, Eger (HU); Daniel Lorincz, Budapest (HU); and Sandor Hallai, Budapest (HU)
Assigned to Rolls-Royce Deutschland Ltd & Co KG, Blankenfelde-Mahlow (DE)
Filed by Gergely György Balazs, Budapest (HU); Tibor Debreceni, Budapest (HU); Péter Dudás, Eger (HU); Daniel Lorincz, Budapest (HU); and Sandor Hallai, Budapest (HU)
Filed on Sep. 23, 2020, as Appl. No. 17/29,823.
Claims priority of application No. 19201080 (EP), filed on Oct. 2, 2019.
Prior Publication US 2021/0104784 A1, Apr. 8, 2021
Int. Cl. H01M 10/48 (2006.01); B64C 39/02 (2023.01); B64U 50/19 (2023.01)
CPC H01M 10/486 (2013.01) [B64C 39/02 (2013.01); B64U 50/19 (2023.01); H01M 2220/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery module comprising:
a multiplicity of battery cells, wherein each cell of the multiplicity of battery cells has a first contact electrode and a second contact electrode;
a printed circuit board having a first series-connector with a first pad area and a second pad area, and a second series-connector with a third pad area and a fourth pad area;
a cross-connector connecting the first series-connector between the first pad area and the second pad area with the second series-connector between the third pad area and the fourth pad area; and
a sensor configured to detect a cross-current at the cross-connector,
wherein the first contact electrode of a first battery cell of the multiplicity of battery cells is connected with the first pad area by first wiring components,
wherein the second contact electrode of a second battery cell of the multiplicity of battery cells is connected with the second pad area by second wiring components,
wherein the first contact electrode of a third battery cell of the multiplicity of battery cells is connected with the third pad area of the second series-connector by third wiring components,
wherein the second contact electrode of a fourth battery cell of the multiplicity of battery cells is connected with the fourth pad area of the second series-connector by fourth wiring components,
wherein the first wiring components, the second wiring components, the third wiring components, and the fourth wiring components each comprise two bond wires configured to provide redundant bonding between a respective electrode and a respective pad area of a series-connector,
wherein the cross-current is configured to flow through the cross-connector in case of a fault of the battery module due to a connection failure of a bond wire of the two bond wires of a wiring component, and
wherein the sensor is configured to detect the connection failure of the bond wire of the two bond wires of the wiring component due to the detection of the cross-current.