Battery Cap Socket-Groove Sealing for Compact High-Capacity Cells
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Solution Overview
Problem
Conventional battery caps face challenges in achieving a balance between sealing performance and size, as increasing the size of sealing members to improve sealing leads to increased battery weight, which is not conducive to lightweight design, especially for large-capacity batteries like those in electric vehicles and energy storage devices.
Innovation Solution
A battery cap design featuring a pole assembly with a socket portion and a connection member that form a seamless connection through a mounting groove, reducing the overall size while maintaining effective sealing, and a battery cap with a cap body and pole assembly that includes a limiting portion and socket portion connected to each other, ensuring a stable and secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the sealing member is increased to improve sealing performance, then the sealing effect is improved, but the overall size of the battery increases
Solution Approach 1:
The pole body is nested within the cap body, with the socket portion of the pole body inserted into the mounting groove formed by the connection member and cap body. This nested structure allows the sealing components to be integrated within the existing battery cap geometry rather than adding external sealing members, thereby improving sealing performance without increasing the overall battery volume.
Solution Approach 2:
The invention transitions from using separate external sealing members to creating a sealing structure through dimensional integration. The mounting groove is formed by the connection member extending into the cap body, and the socket portion of the pole body fits into this groove, creating a sealing interface through dimensional coordination rather than adding separate sealing components in another dimension.
2Quantity of substance
If the volume of the battery is increased to improve capacity, then the capacity is improved, but the weight of the battery increases
Solution Approach 1:
The battery cap is segmented into distinct functional components: the cap body, the connection member with mounting groove, and the pole body with socket portion. This segmentation allows each component to be optimized for its specific function while maintaining a compact overall structure, enabling increased battery capacity through better space utilization without proportional weight increase.
Solution Approach 2:
The connection member and pole body are merged through the socket-portion-to-mounting-groove connection, creating an integrated sealing and structural assembly. This merging eliminates the need for separate sealing members and reduces the overall number of components, allowing for more efficient use of battery volume for active materials rather than structural components, thereby improving capacity without proportional weight increase.
Data Source
AI summary
The present disclosure provides a battery cap and a battery. The battery cap includes a cap body and a pole assembly sealingly connected to the cap body and including a pole body and a connection member. The pole body is disposed on a side of the cap body, and the connection member is disposed on another side of the cap body; the pole body includes a limiting portion and a socket portion that are connected to each other, the socket portion being disposed on a side of the limiting portion, and a side of the connection member close to the pole body is recessed to define a mounting groove; the socket portion is inserted into and fixed to the mounting groove.