Methods for welding components of battery modules
AssigneeJaguar Land Rover Limited
InventorMo AL-BADANI
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Abstract
Embodiments of the present disclosure provide methods for welding components of battery modules. In particular, but not exclusively, the disclosure relates to methods of welding busbars of vehicle battery modules to the terminals of cylindrical cells. The method comprises positioning the tab of a busbar in contact with the terminal and welding the tab to the terminal by controlling a laser welding system to produce a weld on a portion of the tab that contacts the terminal. The weld has a weld shape comprising a substantially straight portion and the method measures a depth of the weld in the straight portion during the welding of the tab to the terminal.
Claims20
A method of laser welding a tab associated with a busbar to a terminal of an electrical cell, the method comprising:
- positioning the tab in contact with the terminal;
- welding the tab to the terminal by controlling a laser welding system to produce a weld on a portion of the tab that contacts the terminal, wherein the weld has a weld shape comprising a substantially straight portion;
- and
- measuring a depth of the weld in the substantially straight portion during the welding of the tab to the terminal.
A battery module comprising a plurality of electrical cells and a busbar component, wherein:
- each of the plurality of electrical cells comprises a terminal;
- the busbar component comprises a plurality of tabs;
- and
- each of the plurality of tabs are welded to respective terminals of one or more of the plurality of electrical cells by a weld that has a weld shape that includes a substantially straight portion.
A control system comprising one or more controllers, the control system configured to control a laser welding system to produce weld connecting a tab to a terminal of an electrical cell, wherein the weld has a weld shape comprising a substantially straight portion, the control system being further configured to control an inline coherent imaging system to measure a depth of the weld in the substantially straight portion.
Dependencies are inferred from the claim text.