Rechargeable battery and manufacturing method thereof
AssigneeLG Energy Solution, Ltd.
InventorsJongin Son, Jeeeun Kim
Life of this patent
Estimating the term…
Abstract
A rechargeable battery includes: an electrode assembly; a battery case for receiving the electrode assembly and including an opened upper portion; and a cap assembly combined to the opened upper portion of the battery case. The cap assembly includes a safety vent, and a CID filter disposed below the safety vent. The safety vent is exposed to an outside at an upper portion, a vent hole penetrating the safety vent from top to bottom is formed, and a CID hole penetrating from top to bottom and connected to the vent hole is formed in the CID filter. A first electrode tab extending from the electrode assembly is bonded to the CID filter, and the CID hole is closed or opened by the first electrode tab.
Claims16
A rechargeable battery comprising:
- an electrode assembly having a first electrode tab extending therefrom;
- a battery case configured to receive the electrode assembly therein, the battery case having an opened upper portion;
- and
- a cap assembly connected to the opened upper portion of the battery case, the cap assembly including:
- a safety vent exposed to an outside of the rechargeable battery at the opened upper portion of the battery case, the safety vent having a vent hole;
- and
- a current interrupt device (CID) filter located below the safety vent, the CID filter having a CID hole connected to the vent hole,
- wherein the first electrode tab is connected to the CID filter, and
- wherein the CID hole is closed or opened by movement of the first electrode tab.
A method for manufacturing a rechargeable battery, comprising:
- receiving an electrode assembly into a battery case with an opened upper portion of the battery case, the electrode assembly having a first electrode tab extending therefrom;
- connecting a cap assembly having a safety vent and a current interrupt device (CID) filter to the opened upper portion of the battery case;
- activating the electrode assembly;
- and
- discharging gas generated by the activating the electrode assembly to an outside of the rechargeable battery through a vent hole in the safety vent and a CID hole in the CID filter,
- wherein the safety vent is exposed to the outside of the rechargeable battery at the opened upper portion of the battery case,
- wherein the first electrode tab is connected to the CID filter while the CID hole is closed by the first electrode tab, and
- wherein, during the discharging the gas, the first electrode tab is pressed downward via the vent hole and the CID hole to open the CID hole so the gas is discharged to the outside of the rechargeable battery through the CID hole and the vent hole.
Dependencies are inferred from the claim text.