Battery Management Authentication via Current Pulse Pattern Detection
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Solution Overview
Problem
The concern of cyberattacks on management devices of energy storage systems in vehicles with telecommunication connectivity is a significant issue, as these systems can be vulnerable through their communication units.
Innovation Solution
Implementing a management device with a current sensor to detect pulse patterns in charge/discharge currents and determine if they match a predetermined pattern, ensuring legitimate communication counterparts are verified before engaging in communication or updating firmware, and using encryption for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the management device communicates with external apparatus via the first communication unit, then the functionality and connectivity of the energy storage system is improved, but the vulnerability to cyberattacks increases
Solution Approach 1:
The system performs preliminary authentication by detecting pulse patterns in the charge/discharge current before allowing communication or firmware updates. This advance verification ensures that only authenticated apparatus can access the management device, preventing cyberattacks before they can execute harmful actions.
Solution Approach 2:
The pulse pattern detection mechanism acts as an intermediary authentication layer between the communication unit and the management device. This intermediary verifies the legitimacy of communication counterparts through current pattern recognition, blocking unauthorized access without preventing legitimate communication.
2Ease of operation
If the management device accepts firmware updates from external sources, then the system can be remotely maintained and updated, but the risk of accepting falsified updates increases
Solution Approach 1:
Before accepting firmware updates, the management device performs preliminary authentication by detecting and verifying pulse patterns in the charge/discharge current. This advance verification ensures that firmware updates are only accepted from authenticated sources, preventing acceptance of falsified updates while maintaining remote update capability.
3Loss of information
If the management device uses a communication unit for connectivity, then the system can exchange data with external apparatus, but the complexity of security management increases
Solution Approach 1:
The management device performs self-authentication by detecting pulse patterns in its own charge/discharge current. This self-service approach eliminates the need for complex external authentication systems, maintaining data exchange capability while simplifying security management through intrinsic verification.
Data Source
AI summary
A battery management unit that manages an energy storage cell, the battery management unit including: a current sensor that measures a charge/discharge current in the energy storage cell; a first communication unit that communicates with a vehicle; and a management unit, in which the management unit executes: determination processing of detecting, by the current sensor, a pulse pattern occurring in the charge/discharge current in the energy storage cell, and determining whether or not the detected pulse pattern matches a predetermined pattern; and communication processing of communicating with the vehicle via the first communication unit when it is determined in the affirmative in the determination processing.