Busbar
AssigneeSamsung SDI Co., Ltd.
InventorAndrej Golubkov
Life of this patent
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Abstract
The present invention refers to a busbar for electrically connecting a plurality of cells of a battery module. In order to electrically disconnect the battery cells from each other upon thermal runaway of at least one of the cells or short circuit, the busbar includes a core and a shell at least partially made of a first material, said first material being an electrically conducting material, wherein the core is at least partially made of a second material having a coefficient of thermal expansion which is significantly higher than the coefficient of thermal expansion of the first material.
Claims10
A busbar for electrically connecting a plurality of cells of a battery module, the busbar comprising:
- a core comprising a second material;
- and
- a shell surrounding a periphery of the core and comprising a first material, the first material being an electrically conducting material,
- wherein the second material has a coefficient of thermal expansion significantly higher than the coefficient of thermal expansion of the first material, and
- wherein the shell is configured to break when the busbar reaches a threshold temperature.
A method for manufacturing a busbar, the method comprising:
- precooling a core, the core comprising a second material;
- and
- joining the core and a shell such that the shell surrounds a periphery of the core to form the busbar, the shell comprising an electrically conductive first material, the second material having a coefficient of thermal expansion which is significantly higher than the coefficient of thermal expansion of the first material, the shell being configured to break when the busbar reaches a threshold temperature.
A busbar for electrically connecting a plurality of cells to each other, the busbar comprising:
- a core comprising:
- a plurality of electrically conductive tab connecting portions;
- and
- an electrically insulative portion between the tab connecting portions and electrically separating the tab connecting portions from each other;
- and
- an electrically conductive shell around the core, the tab connecting portions being electrically connected to each other via the shell,
- wherein the shell is configured to break when the busbar reaches a threshold temperature.
Dependencies are inferred from the claim text.