Integrated Circuit Open Connection Detection for Multi-Cell Battery Packs
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Solution Overview
Problem
Current systems lack the capability to detect open circuit conditions between integrated circuits and multi-cell battery packs, which is crucial for fault detection in applications like hybrid or fully electric automobiles.
Innovation Solution
Incorporating open circuit detection circuitry within the integrated circuit device to monitor wireline connections with the multi-cell battery pack, utilizing RC circuits, diodes, current sources, and comparators to identify forward biased conditions and generate fault indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If open circuit detection circuitry is incorporated within the integrated circuit device, then fault detection capability is improved, but device complexity increases
Solution Approach 1:
The open circuit detection circuitry is merged with the integrated circuit device, combining fault detection functionality with the existing battery management circuit. This integration allows the detection of open circuit conditions between the multi-cell battery pack and the integrated circuit without requiring a separate standalone detection device, thereby improving reliability while managing device complexity through consolidation.
2Measurement precision
If multiple wireline connections are monitored between multi-cell battery pack and integrated circuit, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The monitoring function is segmented into individual detection paths for each wireline connection between the multi-cell battery pack and the integrated circuit. Each connection can be monitored independently through the integrated open circuit detection circuitry, allowing precise identification of which specific connection has an open circuit condition. This segmentation approach enables accurate measurement while managing complexity through modular detection architecture.
Data Source
AI summary
An apparatus comprises an integrated circuit and an open connection detection circuit within the integrated circuit. The integrated circuit includes a plurality of inputs for connecting with a plurality of outputs of a multi-cell battery pack. The open connection detection circuit within the integrated circuit detects an open connection on at least one of the plurality of inputs from the multi-cell battery and generates a fault condition responsive thereto.