Wireless Data Integrity Circuit for EV Battery Management
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Solution Overview
Problem
The integration of wireless transceivers in electronic systems, such as electric vehicle battery management systems, compromises data integrity, posing a safety risk due to increased data vulnerability, despite simplifying wiring and facilitating component replacement.
Innovation Solution
A communication circuit with data integrity circuitry that generates and verifies hashes for data transfers between primary and secondary wireless nodes, ensuring data integrity by performing hashing and verification operations before data is transferred, thereby maintaining system integrity while enabling wireless connectivity for component management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless transceivers are added to simplify wiring and facilitate replacement, then ease of operation and ease of repair are improved, but data integrity and reliability deteriorate due to increased data vulnerability
Solution Approach 1:
The patent introduces an intermediary hashing mechanism that processes data before wireless transmission. The data integrity circuitry generates a hash of the original data, transmits it alongside the data, and verifies it at the receiving end. This intermediary hash verification process mediates between the convenience of wireless transmission and the need for data integrity, allowing wireless operation while maintaining reliability through cryptographic verification.
2Ease of repair
If wireless transceivers are added to facilitate component replacement, then ease of repair is improved, but data vulnerability increases compromising safety
Solution Approach 1:
The patent applies preliminary action by performing data hashing and verification preparation before wireless data transmission occurs. The data integrity circuitry pre-computes hash values and prepares verification mechanisms in advance of the actual data transfer. This preliminary cryptographic preparation ensures that even if wireless transmission vulnerabilities are exploited during component replacement operations, the pre-established hash verification provides a safety check to detect and prevent data corruption or tampering.
Data Source
AI summary
A communication circuit for communications between a controller and a subsystem with a monitored electrical component is described. The communication circuit includes network formation circuitry configured to establish a wireless network between a primary wireless node adapted to be coupled to the controller and a secondary wireless node coupled to the subsystem. The communication circuit also includes data transfer circuitry configured to perform data transfers between the primary wireless node and the secondary wireless node. The communication circuit further includes data integrity circuitry configured to: generate a hash for data received by the communication circuit; and verify the hash before the data transfer circuitry performs a data transfer of the data between the primary wireless node and the secondary wireless node.