Battery Lock Authentication for Secure EV Battery Swapping
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Solution Overview
Problem
The lack of supervision in electric vehicle battery replacement leads to unauthorized or incorrect battery replacement, posing security risks and causing losses to replacement stations.
Innovation Solution
A battery lock system that uses security messages to control the electrical connection and disconnection of batteries, ensuring that only authorized batteries are replaced by sending and receiving signals between the battery lock and external devices like battery replacement devices or stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If battery replacement is allowed without supervision, then ease of operation is improved, but reliability deteriorates due to unauthorized or incorrect battery replacement
Solution Approach 1:
The patent introduces a battery lock as an intermediary device between the battery and the electric vehicle. This lock mechanism requires authentication through security messages before allowing battery installation or removal, thereby supervising the replacement process without significantly complicating user operations. The battery lock acts as a mediator that ensures only authorized batteries can be installed while maintaining ease of operation through automated authentication.
2Reliability
If battery replacement supervision system is implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the battery replacement system into distinct functional modules: a battery lock installed on the electric vehicle, a battery replacement device at the replacement station, and a message generation unit. Each module has a specific function - the battery lock manages authentication and locking, the replacement device handles battery installation/removal, and the message generation unit creates security credentials. This segmentation allows the supervision system to be implemented without requiring complete system redesign, thus limiting the increase in overall complexity.
3Reliability
If security messages are required for battery installation, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements a self-service mechanism where the battery replacement device automatically generates security messages and the battery lock automatically verifies and processes these messages without requiring manual user intervention. The system performs authentication, message generation, and locking/unlocking operations autonomously, ensuring reliable authorized battery installation while maintaining ease of operation for the end user who simply needs to present the battery for replacement.
Data Source
AI summary
Disclosed are a battery replacement device (1″) and a control method therefor. The battery replacement device (1″) is used for mounting a battery on an electric vehicle, and sending a security message to a battery lock (2″) to unlock the battery, so that the battery is electrically connected to the electric vehicle.