Battery Cell Inspection Circuit With Automated Path Switching
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Solution Overview
Problem
The existing battery inspection processes are manual and cannot be automated, leading to inefficiencies and a risk of missed tests, particularly in distinguishing between positive and negative poles during insulation and voltage testing.
Innovation Solution
An inspection circuit and method that utilize a pathway switching circuit to automatically connect different inspection devices to test terminals corresponding to battery cells, allowing for separate and simultaneous inspections of voltage, insulation, and continuity, using multiple test paths and switch arrays to ensure accurate and comprehensive testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection methods are used for battery cells, then the inspection process is simple to implement, but the productivity is low and the risk of missed tests is high
Solution Approach 1:
The inspection circuit is divided into multiple independent test paths (first test path, second test path, third test path) that can be independently controlled. Each path is configured for specific inspection types (insulation testing between positive electrodes, insulation testing between negative electrodes, voltage testing), allowing the complex inspection task to be segmented into manageable, specialized subsystems that can be automatically controlled without increasing overall system complexity
Solution Approach 2:
The pathway switching circuit is designed to universally connect different inspection devices to different battery cells through multiple test paths. The switching circuit can dynamically route any inspection device to any test terminal based on inspection signals, making the system adaptable to various inspection types (insulation, voltage, continuity) and battery configurations without requiring separate dedicated circuits for each inspection type
2Measurement precision
If manual inspection is performed on battery cells, then the device complexity is low, but the measurement precision is insufficient due to difficulty in distinguishing positive and negative poles
Solution Approach 1:
Each test path is specifically configured with local quality characteristics suited for its inspection purpose. The first test path is optimized for insulation testing between positive electrodes, the second test path for insulation testing between negative electrodes, and the third test path for voltage testing. This localized optimization ensures that each inspection type is performed with the appropriate circuit configuration, improving measurement precision without requiring complete system redesign for each inspection type
Solution Approach 2:
The pathway switching circuit acts as an intermediary that intelligently routes inspection signals between inspection devices and test terminals. Based on inspection signals, the switching circuit automatically connects the appropriate inspection device to the correct test terminal, eliminating the need for manual identification of positive and negative poles. This intermediary function ensures accurate connections and improves measurement precision while maintaining manageable system complexity through automated control
3Productivity
If automated inspection is implemented with multiple inspection devices and pathway switching circuits, then the productivity increases, but the device complexity increases
Solution Approach 1:
The inspection system employs dynamic pathway switching that adapts the circuit configuration based on inspection requirements. The pathway switching circuit dynamically connects different inspection devices to different test paths according to inspection signals, allowing the system to reconfigure itself for various inspection types and battery configurations. This dynamic adaptability enables high productivity through automated multi-device operation while managing complexity through software-controlled switching logic rather than fixed hardwired connections
Data Source
AI summary
An inspection circuit includes a plurality of inspection devices and a plurality of pathway switching circuits. Input ends of the pathway switching circuits are respectively connected to different test lines. The test lines are connected to a test terminal corresponding to a battery cell under test. Output ends of the pathway switching circuits are respectively connected to the plurality of inspection devices. The pathway switching circuit is configured to connect, according to an inspection signal, an inspection device corresponding to the inspection signal and a test terminal corresponding to the battery cell under test. The inspection device is configured to obtain an inspection result of the battery cell under test.