Secondary Battery
AssigneeLG Energy Solution, Ltd.
InventorsHyoung Kwon Kim, Hyeon Soo Sim, Ha Young Heo, Duk Hyun Ryu, Nam Won Kim
Life of this patent
Estimating the term…
Abstract
According to one aspect of the present invention, a secondary battery has a bent part disposed on an end of an upper portion of the battery can. The bent part is bent inward toward a top cap to fix the top cap. The secondary battery is configured such that, when an internal pressure of the battery can exceeds a predetermined value, a region (R) in which the top cap and the bent part overlap each other when viewed from above is reduced by deformation of the top cap or the bent part to allow an entire region of the top cap to become spaced further from the battery can.
Claims14
A secondary battery comprising:
- an electrode assembly;
- a battery can configured to accommodate the electrode assembly and having an open upper portion;
- and
- a top cap bonded to the upper portion of the battery can,
- wherein an end of the upper portion of the battery can includes a bent part that is bent inward toward the top cap to fix the top cap, and
- wherein the secondary battery is configured such that, when an internal pressure of the battery can exceeds a predetermined value, a region (R) in which the top cap and the bent part overlap each other when viewed from above is reduced by deformation of the top cap or the bent part so as to allow an entire region of the top cap to become spaced further from the battery can.
Dependencies are inferred from the claim text.