Battery Monitoring Chain for Pinpointing IC Communication Breaks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery monitoring apparatuses using daisy chain connections struggle to accurately identify the location of communication interruptions between multiple ICs connected to an assembled battery, often leading to erroneous determinations due to timing issues and lack of precise identification of disconnection points.
Innovation Solution
The apparatus includes a plurality of monitoring circuits and a control circuit connected in a daisy chain configuration, where monitoring circuits transmit communication interruption commands with updated value data to identify the location of interruptions by performing calculations on received count values, allowing the control circuit to determine the precise location of communication failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a daisy chain connection is used to connect multiple ICs to monitor an assembled battery, then the device complexity is reduced and ease of operation is improved, but the ability to accurately identify the location of communication interruptions deteriorates
Solution Approach 1:
The monitoring circuits pre-calculate updated value data based on received count values before a communication interruption occurs. When an interruption is detected, this pre-calculated data is already available, allowing immediate and accurate identification of the interruption location without timing issues or erroneous determinations.
2Reliability
If communication interruption detection is implemented in a daisy chain connection, then the reliability of monitoring is improved, but the device complexity increases due to additional communication protocols and processing
Solution Approach 1:
Each monitoring circuit in the daisy chain autonomously performs calculations on received count values and generates updated value data independently. This self-service approach enables reliable communication interruption detection without requiring complex centralized control or additional communication protocols, thus maintaining simplicity while improving reliability.
Data Source
AI summary
An assembled battery monitoring apparatus includes a plurality of monitoring circuits and a control circuit that transmits a command to the plurality of monitoring circuits at each of cycles. In response to receiving a communication interruption command including a value data, one of the plurality of monitoring circuits is configured to apply a calculation process on the value data included in the received communication interruption command to obtain an updated value data, and transmit a communication interruption command including the updated value data to a downstream side in the daisy chain connection up to the control circuit. In response to thereafter receiving a communication interruption command including a value data, the control circuit is configured to identify a location where a communication interruption occurs based on the received value data included in the received communication interruption command.