Onboard Battery Impact Detection via Deformable Detector
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Solution Overview
Problem
Existing onboard battery modules face challenges in detecting and preventing the reuse of modules that have experienced large impacts, leading to potential performance degradation and safety risks, with current solutions being complex and increasing production costs.
Innovation Solution
The onboard battery incorporates a housing case with through holes and elastically deformable detectors that displace relative to the battery module upon impact, allowing for visual detection of impact history through the deformation of these detectors, thereby preventing the reuse of impacted modules without increasing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a firm structure is provided for the battery module to protect against impact, then safety and structural integrity are improved, but it becomes impossible to visually detect impact history and manual management errors may occur
Solution Approach 1:
The detector is pre-installed on the battery module with its elastically deformable portion positioned to pass through the through hole of the housing case. Before any impact occurs, the system is prepared so that upon impact, the detector automatically deforms and passes through the hole, leaving a permanent visual mark that the module has been impacted.
Solution Approach 2:
The elastically deformable portion of the detector creates a physical copy or trace of the impact event by passing through the through hole in the housing case. This creates a permanent visual record (a hole or deformation visible from outside) that replicates the impact history, allowing external observation without opening the housing case.
2Ease of operation
If manual recording of impact history is implemented, then battery module management is improved, but human errors lead to reuse of impacted modules
Solution Approach 1:
The battery module itself performs the recording function through the detector that automatically detects and records impact history by deforming and passing through the through hole. This eliminates the need for human operators to manually record impact events, thereby eliminating human error while maintaining ease of management through visual inspection.
Solution Approach 2:
The detector creates an objective physical copy of the impact event (a visible deformation or hole in the housing case) that serves as reliable evidence. This physical record cannot be falsified or forgotten like manual records, ensuring accurate tracking of impact history for proper battery module management.
3Reliability
If complex impact detection systems with service plugs and plug holders are used, then prevention of reused impacted modules is improved, but device complexity and production costs increase
Solution Approach 1:
The invention extracts only the essential detection function from complex service plug systems. Instead of using service plugs, plug holders, and electrical circuits, it uses a simple elastically deformable detector that passively indicates impact by deforming and passing through the housing case hole, eliminating unnecessary components while maintaining reliable prevention of reused impacted modules.
Solution Approach 2:
The elastically deformable detector is a simple, inexpensive component that permanently records impact by deforming. Once deformed, it remains in that state, providing permanent visual evidence. This simple disposable-like component replaces complex reusable electrical systems, reducing both complexity and production cost while ensuring impacted modules are not reused.
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
This solution enables objective and visual recognition of impact history, preventing the reuse of damaged battery modules while maintaining a simple configuration and reducing production costs, thereby ensuring safety and performance.
Implementation Method 1
the elastically deformable portion is elastically deformable. When an impact is applied and the battery module and the at least one detector are displaced relative to the housing case by a certain amount or larger, the elastically deformable portion is elastically deformed to pass through the at least one through hole
Data Source
AI summary
An onboard battery includes a battery module, a housing case, and a detector. In the battery module, a battery cell is disposed. The housing case has a through hole and houses the battery module. The detector includes a fixture portion fixed to the battery module and an elastically deformable portion that is elastically deformable. When an impact is applied and the battery module and the detector are displaced relative to the housing case by a certain amount or larger, the elastically deformable portion is elastically deformed to pass through the through hole.