Battery Bending Test Fixture for Controlled Angle and Anti-Slip Loading
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Solution Overview
Problem
Existing battery bending test methods fail to accurately simulate common bending conditions, leading to inadequate evaluation of safety performance, as they cannot securely hold the battery, control bending angles beyond a limited range, and prevent sliding during testing.
Innovation Solution
A battery bending test system with a fastening device that securely holds the battery using plate elements and rod-shaped elements, allowing precise control over bending angles from 0 to 180 degrees, and a pressing device that applies predetermined pressure and displacement to evaluate safety performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a battery is firmly attached to the battery compartment, then the battery is securely held, but the battery is subjected to bending force during dismantlement and replacement
Solution Approach 1:
The test system divides the battery into segments by using multiple plate elements (first plate element, second plate element, third plate element) that can independently clamp different portions of the battery, allowing controlled application of bending force while maintaining secure attachment during testing
2Adaptability or versatility
If the device holding the battery is subjected to bending force, then the battery experiences realistic application conditions, but the battery may slide or move during testing
Solution Approach 1:
The test system combines multiple fastening functions into a single integrated fastening device that uses plate elements and rod-shaped elements working together to clamp the battery, preventing sliding while allowing controlled bending force application
Solution Approach 2:
The rod-shaped elements act as intermediaries between the plate elements, providing mechanical advantage and controlled movement that prevents battery sliding while enabling realistic bending conditions during testing
3Device complexity
If existing test methods are used, then the testing process is simple, but the bending angle is limited to a small range (45-60 degrees)
Solution Approach 1:
The test system employs dynamic elements including movable plate elements and rotatable rod-shaped elements that enable continuous adjustment of the bending angle throughout the full 0-180 degree range, transforming a static limited-angle system into a dynamic versatile system
Data Source
Figure 1a~1b
Figure 2
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AI summary
The embodiments of the present application relate to a battery bending test system and method. The battery bending test system according to an embodiment includes a fastening device having an arrangement surface configured to hold a battery; a pressing device configured to press the battery to bend; and a load-bearing device configured to bear the fastening device, the load-bearing device having a reference surface for bearing the fastening device. A first angle Ø is formed between the arrangement surface and the reference surface. The range of the first angle Ø is 0° < Ø < 90°. The battery bending test system and method provided by the embodiments of the present application can precisely control the bending angle and bending morphology of the battery, and reasonably evaluate the safety performance of the battery when subjected to the bending force, thus meeting expectations of the safety test.