Battery Cell Group Wedge Locking for Impact-Resistant Enclosures
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Solution Overview
Problem
Electric vehicle batteries face safety risks due to inadequate stiffness and strength, which can be compromised by impacts and vibrations, necessitating an improvement in structural stability to ensure performance and safety.
Innovation Solution
A battery design featuring a battery cell group enclosed between locking beams with a wedge-shaped gap, filled by a wedge-shaped component to securely lock the cells, enhancing interaction forces between cells and improving structural stability and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional battery enclosure structures are used, then assembly is simple, but stiffness and strength are insufficient leading to safety risks under impact and vibration
Solution Approach 1:
The enclosure is divided into multiple beams (first beam, second beam, third beam, fourth beam) that are arranged at intervals to form a segmented structural framework. This segmentation allows each beam to independently contribute to the overall strength while maintaining assembly simplicity through modular construction.
Solution Approach 2:
A wedge-shaped gap is introduced between the locking beam and battery cell group, creating an asymmetric structural feature. The wedge-shaped component fills this gap to provide enhanced locking force, improving strength without requiring complex symmetric fastening mechanisms.
2Stability of the object's composition
If rigid fixation methods are used to improve stability, then stiffness increases, but assembly difficulty increases
Solution Approach 1:
The wedge-shaped gap is pre-formed between the locking beam and battery cell group during enclosure assembly, allowing the battery cell group to be inserted first. The wedge-shaped component is then added to complete the locking action, separating the insertion step from the fixation step to simplify assembly.
Solution Approach 2:
The wedge-shaped component acts as an intermediary element between the locking beam and battery cell group. It translates the simple insertion motion into effective locking force, achieving stable fixation without requiring complex direct connection mechanisms.
3Strength
If more locking mechanisms are added to improve strength, then structural strength increases, but device complexity increases
Solution Approach 1:
The wedge-shaped component serves multiple functions: it fills the wedge-shaped gap, provides locking force to secure the battery cell group, and contributes to the overall structural rigidity of the enclosure. This multi-functionality achieves enhanced strength without adding separate dedicated locking mechanisms.
Solution Approach 2:
The locking function is merged with the structural support function by integrating the wedge-shaped component into the beam structure. The locking beam and wedge-shaped component work together as a unified structural element, reducing the need for separate fastening hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively locks the battery cell group to the enclosure, increasing the battery's stiffness and strength, thereby reducing safety risks from vibrations and impacts, while also simplifying assembly and potentially increasing energy density.
Implementation Method 1
a wedge-shaped component configured to fill the wedge-shaped gap, so as to lock the battery cell group to the enclosure
Data Source
AI summary
Provided in embodiments of the present application are a battery, a power consuming apparatus, and a method and apparatus for manufacturing a battery. The battery includes: a battery cell group including a plurality of battery cells arranged in a first direction; an enclosure including a first beam and a second beam that are arranged at an interval in the first direction, where the battery cell group is arranged between the first beam and the second beam, at least one of the first beam and the second beam is a locking beam, and a wedge-shaped gap is provided between the locking beam and the battery cell group; and a wedge-shaped component configured to fill the wedge-shaped gap, so as to lock the battery cell group to the enclosure. The technical solution described above can improve stiffness and strength of the battery, thereby improving performance of the battery.