Battery Management System Random Number Authentication
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Solution Overview
Problem
Conventional battery packs with volatile chemical reactions, such as Lithium ion cells, lack secure authentication mechanisms to prevent unauthorized device communication and ensure safe operation, potentially leading to overheating, fires, or explosions if conditions are not properly managed.
Innovation Solution
A battery management system with a random number generator and encryption keys is implemented to authenticate the battery pack and device, enabling secure communication and ensuring only authorized devices can interact, thereby preventing unsafe conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional battery packs use volatile chemical reactions (Lithium ion cells) for energy storage, then energy density and power are improved, but safety deteriorates due to risks of overheating, fires, or explosions
Solution Approach 1:
The battery management system performs preliminary authentication and safety checks before allowing charge/discharge operations. The system preemptively identifies unauthorized devices and prevents unsafe operations before they can cause harm, rather than reacting after overheating or other dangerous conditions occur.
Solution Approach 2:
The patent introduces an authentication protocol as an intermediary layer between the battery cells and external devices. This mediator verifies device authorization and communicates safety status, preventing direct unauthorized access to the volatile chemical reactions while allowing safe operation of high-density battery cells.
2Object-affected harmful factors
If battery packs include fail-safe circuitry for detecting unsafe conditions, then safety is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple safety functions into an integrated battery management system that handles authentication, monitoring, and protection in a unified controller. This merging reduces the number of separate components and simplifies the overall system architecture while maintaining comprehensive safety coverage.
Solution Approach 2:
The battery management system performs multiple functions simultaneously: authentication of external devices, monitoring of battery cell conditions, execution of safety protocols, and communication with connected devices. This multi-functionality reduces the need for separate dedicated circuits for each safety function.
3Loss of information
If battery packs communicate battery charge data to connected devices, then information exchange is improved, but security deteriorates due to lack of authentication mechanisms
Solution Approach 1:
The authentication protocol is executed before any battery charge data communication begins. The system preemptively verifies device authorization and establishes secure communication channels, ensuring that only authenticated devices can receive or transmit battery information, thereby preventing unauthorized access before it can occur.
Solution Approach 2:
The battery management system provides feedback about authentication status and security conditions to connected devices. This feedback mechanism allows devices to understand their authorization level and adjust their interaction accordingly, maintaining secure communication while enabling efficient information exchange about battery charge data.
Data Source
AI summary
Apparatus, method and computer program product are provided for battery management. In one implementation, a method of communication provided. The method includes enabling determining when a battery pack is coupled to a device, the battery pack including a battery management system. The method also includes generating a random number at the battery management system, the battery management system including battery monitoring circuitry, a processor, memory and a random number generator. The method includes using the random number to provide authentication and if authentication succeeds, enabling communication between the battery pack and the device.