Battery Data Management With Secure Network Authentication
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Solution Overview
Problem
Existing battery management systems face challenges in obtaining battery data without physically separating the battery pack from the vehicle and lack security in data communication, making them vulnerable to external intrusion.
Innovation Solution
A battery data management system that enables secure data communication through a wired/wireless network by using a terminal to encrypt and decrypt messages with public and private keys, generating session keys, and verifying stability through random number-based messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If battery data is obtained by physically separating the battery pack from the vehicle, then data acquisition is possible, but it causes inconvenience and increases time loss
Solution Approach 1:
The patent replaces the mechanical system of physically removing and attaching the battery pack with an electronic communication system. The terminal device communicates with the battery management apparatus through wired or wireless networks to obtain battery data, eliminating the need for physical manipulation of the battery pack.
Solution Approach 2:
The patent introduces a communication network as an intermediary between the terminal device and the battery management apparatus. This intermediary enables data transmission without requiring physical access to the battery pack, thus resolving the contradiction between operational convenience and time loss.
2Device complexity
If battery data is transmitted over a network without encryption, then data communication is simple, but security is compromised and external intrusion is allowed
Solution Approach 1:
The patent implements preliminary action by performing authentication and key exchange before actual data transmission. The terminal device and battery management apparatus establish secure communication channels in advance through mutual authentication and session key generation, ensuring security before sensitive battery data is exchanged.
Solution Approach 2:
The patent applies local quality by implementing encryption and authentication only for the specific communication channels that require security (battery data transmission), while other communication functions can remain simpler. This selective application of security measures maintains overall system simplicity while protecting critical data.
3Reliability
If authentication and encryption protocols are implemented, then data security is improved, but communication process complexity increases
Solution Approach 1:
The patent implements self-service by enabling the terminal device and battery management apparatus to perform mutual authentication and generate session keys automatically without requiring manual intervention or complex external authentication infrastructure. The system manages its own security protocols through pre-shared keys and automated cryptographic operations.
Data Source
AI summary
An battery data management method according to an embodiment disclosed herein includes transmitting, by a terminal, battery-related information of a battery to an authentication server to obtain a public key and a first message, encrypting by the terminal, a first message with the public key, and transmitting, by the terminal, the encrypted first message to a processor, decrypting, by the processor, the encrypted first message using a previously stored first key to obtain the first message, generating, by the processor, a second message based on random number information, encrypting, by the processor, the second message with the first key, and transmitting, by the processor, the encrypted second message to the terminal, decrypting, by the terminal, the second message with the public key to obtain the second message and transmitting, by the terminal, the first message and the second message to the authentication server.