Battery welds
AssigneeRivian IP Holdings, LLC
InventorsVarun Milind Kale, Bryce Fredrick Alexander Beecher, Tianyue Gao, Ning Kang, Jingsi Yang, Rajeev Dhiman
Life of this patent
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Abstract
Aspects of the subject disclosure relate to various features of a battery subassembly, such as a battery module. The battery subassembly may be implemented in an electric vehicle or in a building. In one or more implementations, the battery subassembly may include a battery cell having a peripheral rim having a first width and forming a terminal for the battery cell; and at least one weld configured to couple the peripheral rim to a connector, in which the at least one weld has a second width that is larger than the first width.
Claims18
An apparatus, comprising:
- a battery cell comprising a peripheral rim defining an inner radial edge and an outer radial edge, the peripheral rim having a rim width from the inner radial edge to the outer radial edge and forming a terminal for the battery cell;
- and at least one weld configured to couple the peripheral rim to a connector, wherein the at least one weld has a weld width that is larger than the rim width such that the at least one weld extends beyond at least one of the inner radial edge or the outer radial edge of the peripheral rim;
- wherein the rim width is between 0.5 millimeters and 0.8 millimeters, and wherein the weld width is greater than one millimeter.
A battery subassembly, comprising:
- a current collector assembly comprising an electrically conductive layer and a tab extending from the electrically conductive layer;
- a battery cell comprising a peripheral rim defining an inner radial edge and an outer radial edge, the peripheral rim having a rim width from the inner radial edge to the outer radial edge and forming a terminal for the battery cell;
- and at least one weld configured to couple the peripheral rim to the tab, wherein the at least one weld has a weld width that is larger than the rim width such that the at least one weld extends beyond at least one of the inner radial edge or the outer radial edge of the peripheral rim;
- wherein the rim width is between 0.5 millimeters and 0.8 millimeters, and wherein the weld width is greater than one millimeter.
A method, comprising:
- providing a battery cell having a peripheral rim defining an inner radial edge and an outer radial edge, the peripheral rim having a rim width from the inner radial edge to the outer radial edge;
- aligning a tab of a current collector assembly with a peripheral rim of the battery cell;
- and welding the tab of the current collector assembly with the peripheral rim of the battery cell by forming at least one weld between the tab and the peripheral rim, the at least one weld having a weld width greater than the rim width, such that the at least one weld extends beyond at least one of the inner radial edge or the outer radial edge of the peripheral rim;
- wherein the rim width is between 0.5 millimeters and 0.8 millimeters, and wherein the weld width is greater than one millimeter.
Dependencies are inferred from the claim text.