Battery Module Secure Element for Fast Resale Verification
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Solution Overview
Problem
Current resale solutions for used battery modules are not user-friendly and secure enough, making it difficult to reuse them effectively in different systems or applications.
Innovation Solution
A battery module with a secure element that stores data on the state of the battery cells, an interface unit for data evaluation, and a battery module controller to determine and securely transmit this data to external devices, enabling a user-friendly and secure resale process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current resale solutions are used for battery modules, then the resale process can proceed, but the process is not user-friendly and lacks sufficient security
Solution Approach 1:
The battery module performs self-verification of its state data through the secure element and interface unit, eliminating the need for external offline checks. The module autonomously evaluates its own state data in response to requests from external devices, making the resale process both secure and convenient without requiring user intervention in complex verification procedures
Solution Approach 2:
A secure element acts as an intermediary between the battery module controller and external devices, securely storing state data and mediating verification requests. The interface unit serves as another intermediary layer that handles communication securely, protecting sensitive battery data while enabling transparent verification for resale purposes
2Measurement precision
If offline checks are performed for battery module resale, then verification can be conducted, but the process becomes complex and time-consuming
Solution Approach 1:
The state data of the battery cells is determined and stored in the secure element during the battery module's operational life, before resale is needed. This preliminary recording of state data (including health status, lifecycle information, and charging cycles) eliminates the need for time-consuming offline verification checks at the time of resale, as the data is already captured and securely stored
Solution Approach 2:
Instead of performing physical offline checks of the battery module, the verification process uses copies of the state data stored in the secure element. The interface unit transmits relevant state data to external devices for evaluation, replacing complex physical inspection with efficient data-based verification that maintains accuracy while reducing time loss
Data Source
AI summary
A battery module includes one or more battery cells and a battery module controller operatively coupled to the battery cells. The battery module controller is configured to determine a state of the battery cells. A secure element is operatively coupled to the battery module controller and is configured to store data indicative of the state of the battery cells as determined by the battery module controller. An interface unit operatively coupled to the secure element is configured to receive a request for evaluating the state of the battery from an external user device.