- Patent Title: Battery housings for accommodating swelling of electrode assemblies
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Application No.: US16117096Application Date: 2018-08-30
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Publication No.: US10658632B1Publication Date: 2020-05-19
- Inventor: Qingcheng Zeng , Donald G. Dafoe , Kenzo Nagai
- Applicant: Apple Inc.
- Agency: Polsinelli PC
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M2/04 ; H01M2/08

Abstract:
Battery housings and batteries are presented for accommodating swelling of an electrode assembly. In one aspect, a battery includes an electrode assembly that includes a cathode and an anode. The battery also includes a receptacle that includes at least one feedthrough disposed through one or more sides of the receptacle. A lid is sealed to the receptacle. The receptacle, the at least one feedthrough, and the lid form a sealed volume in which the electrode assembly and an electrolyte are disposed. The lid is configured to displace from a first position to a second position in response to a swelling of the electrode assembly within the sealed volume. The receptacle is configured to strain less than the lid during the swelling of the electrode assembly. The second position of the lid may correspond to an expanded volume of the electrode assembly that is 15% greater than an initial volume.
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