Battery cells, batteries, and power consumption devices
JP2026509858APending Publication Date: 2026-03-25CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-18
- Publication Date
- 2026-03-25
AI Technical Summary
Technical Problem
Battery cells face reliability issues due to deformation and cracking of insulating members caused by the pressure and tension from electrode terminals, leading to potential short circuits and performance loss.
Method used
A protective member with higher tensile strength than the insulating member is provided around the electrode terminal, restricting its deformation and movement, thereby reducing the risk of insulating member cracking and improving cell reliability.
Benefits of technology
The protective member effectively suppresses deformation and cracking of the insulating member, enhancing the reliability and stability of the battery cell by limiting radial deformation and movement of the terminal body.
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Smart Images
Figure 2026509858000001_ABST
Abstract
The present invention relates to a battery cell, a battery, and a power consumption device. The battery cell includes an electrode assembly, an outer case, electrode terminals, an insulating member, and a protective member. The outer case includes a wall portion, the wall portion of which is provided with electrode lead-out holes. The electrode assembly is housed within the outer case and includes tabs. The electrode terminals are electrically connected to the tabs and include a terminal body that penetrates the electrode lead-out holes and a fixed portion connected to the terminal body. The insulating member is provided so as to surround the terminal body, and at least a portion of the insulating member is located between the fixed portion and the wall portion, insulating and isolating the fixed portion and the wall portion. The protective member is provided so as to surround the terminal body and is in contact with the insulating member, and the tensile strength of the protective member is greater than the tensile strength of the insulating member. Figure 7
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