Battery Pack Bottom Guard Plate Impact Testing for Deformation Measurement
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Solution Overview
Problem
Current battery pack testing methods lack efficient and cost-effective means to assess the impact resistance and deformation resistance of the bottom guard plate, making it difficult to establish design standards and ensure safety.
Innovation Solution
A bottom guard plate testing device comprising a pedestal with a measuring recess, cushion block, and test mechanism, which allows for impact collision tests to measure impact force and deformation values, facilitating data quantification and standardization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If overall battery pack testing is performed, then safety assessment is achieved, but testing cost and time consumption increase significantly
Solution Approach 1:
The patent segments the battery pack testing into two distinct parts: overall battery pack testing and separate bottom guard plate testing. By isolating the bottom guard plate as a testable component, the invention enables focused testing of this critical safety element without requiring complete disassembly and reassembly of the entire battery pack, thereby reducing testing time and cost while maintaining safety assessment capability
Solution Approach 2:
The invention extracts the bottom guard plate from the complete battery pack assembly to create a standalone testing configuration. This extraction allows the bottom guard plate to be tested independently using a dedicated test mechanism, eliminating the need to test the entire battery pack when only bottom guard plate performance is required, thus significantly reducing testing resources
2Reliability
If overall battery pack testing is performed, then comprehensive safety evaluation is achieved, but economic cost increases
Solution Approach 1:
The patent divides the testing system into modular components: a reusable pedestal with measurement mechanisms and separate bottom guard plate test specimens. This segmentation allows the expensive measurement infrastructure to be built once and reused for multiple bottom guard plate tests, while only the relatively inexpensive test plates need to be manufactured and tested, thereby reducing per-test costs
Solution Approach 2:
The invention uses a standardized pedestal and measurement system that can serve as a template for multiple testing configurations. By creating a reusable test platform with standardized interfaces and measurement capabilities, the system eliminates the need to build complete battery pack assemblies for each test, significantly reducing manufacturing costs while maintaining evaluation comprehensiveness
3Measurement precision
If overall battery pack testing is used, then general performance is assessed, but bottom guard plate specific performance cannot be reflected
Solution Approach 1:
The patent separates the bottom guard plate testing from the overall battery pack testing, creating a dedicated test configuration that focuses measurement resources on the bottom guard plate. This segmentation allows for specialized measurement setups (such as localized force sensors and deformation measurement systems) that can precisely capture bottom guard plate performance without the complexity of monitoring entire battery pack systems
Solution Approach 2:
The invention introduces a specialized test mechanism as an intermediary between the bottom guard plate and the measurement system. This intermediary component includes elements such as impactors, force sensors, and displacement measurement devices that are specifically designed to interface with the bottom guard plate geometry and translate its mechanical response into measurable data, thereby achieving precise measurement without requiring complex direct instrumentation of the entire battery pack
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
Enables precise measurement of impact and deformation resistance, aiding in the design and selection of guard plates that provide sufficient support and impact resistance, ensuring battery pack safety.
Implementation Method 1
the impact assembly is located directly above the bottom guard plate, so that the impact assembly falls vertically from the test bracket to perform an impact collision test on the bottom guard plate
Implementation Method 2
the pressure sensor or the plastically deformable member is placed in the measuring recess of the pedestal, so as to measure the corresponding impact force value through the pressure sensor
Implementation Method 3
measure the deformation value of the bottom guard plate after the impact through the plastically deformable member
Data Source
AI summary
A bottom guard plate testing device for a battery pack is provided, which includes a pedestal and a test mechanism. The pedestal is configured to place a bottom guard plate, the pedestal is provided with a measuring recess, a pressure sensor or a plastically deformable member is arranged in the measuring recess, and a cushion block is arranged on the pedestal. The bottom guard plate and the pedestal are spaced apart by the cushion block to form an impact cavity, and the measuring recess is located in the impact cavity. The test mechanism includes a test bracket and an impact assembly, the test bracket and the impact assembly are arranged on one side of the pedestal, the impact assembly is suspended on the test bracket, and the impact assembly is located directly above the pedestal.