U-Shaped Angular Battery Case for Protected Electrode Insertion
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Solution Overview
Problem
In angular batteries, the electrode body is often exposed and vulnerable during insertion into the battery case, leading to potential damage and insertion difficulties due to its unprotected state.
Innovation Solution
The angular battery design features a U-shaped case body and lid body with short side surfaces that protect and guide the electrode body, reducing the risk of damage during insertion and manufacturing, and improving material yield and manufacturing efficiency by using bent flat plates for both the case and lid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the electrode body is inserted through the angular opening after the battery case body has been produced, then the battery case can be manufactured with fixed corners, but the electrode body may be caught in the opening and difficult to insert or may be damaged
Solution Approach 1:
The patent applies preliminary action by attaching the sealing plate to the electrode body before inserting it into the battery case body. This pre-attachment ensures the electrode body is protected and properly positioned during insertion, preventing it from being caught in the angular opening or damaged. The sealing plate acts as a guide and protective element that facilitates smooth insertion while maintaining the structural integrity of both components.
2Quantity of substance
If the electrode body is made in the largest possible size to improve volumetric energy density, then energy density increases, but the unprotected portions of the electrode body become more vulnerable to damage during insertion
Solution Approach 1:
The patent merges the sealing plate with the electrode body by attaching the sealing plate to the electrode body, creating an integrated assembly. This combination provides protective coverage for the vulnerable portions of the electrode body while maintaining its maximum possible size for high volumetric energy density. The merged structure ensures both the functional requirements of the sealing plate and the protective requirements of the electrode body are satisfied simultaneously.
3Reliability
If the sealing plate is attached to the electrode body before insertion, then the electrode body becomes protected, but the constituent components may interfere with each other during insertion
Solution Approach 1:
The patent applies local quality by designing the sealing plate with specific geometric characteristics that match the battery case opening. The sealing plate is configured to cover only the necessary portions of the electrode body while maintaining compatibility with the angular opening dimensions. This localized design ensures protection where needed without creating interference during insertion, as the sealing plate's shape and size are optimized for both protective and insertable qualities.
Data Source
AI summary
The present disclosure provides an angular battery with enhanced protection of an electrode body. The present disclosure provides an angular battery including an electrode body and a battery case that accommodates the electrode body. The battery case is configured of a substantially U-shaped case body that has a rectangular bottom surface and a pair of long side surfaces provided integrally with the bottom surface and facing each other, and a substantially U-shaped lid body having an upper lid facing the bottom surface and a pair of short side surfaces provided integrally with the upper lid and facing each other. The electrode body is attached to the lid body. In the angular battery, the case body and the lid are joined to each other to form a state in which the electrode body is accommodated inside the battery case.