Battery Cell Control Device with Authorization Verification
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Solution Overview
Problem
Existing battery cells for motor vehicles lack secure access control and safe handling mechanisms, particularly in high-voltage batteries, which can pose safety risks during operation and transportation due to uncontrolled voltage application.
Innovation Solution
The integration of a control device with a verification unit and a switching element, allowing only authorized external control devices to interact with the battery cell, ensuring secure access and safe operation by controlling the electrical connection between the galvanic element and terminals, including features like encrypted commands, a keep-alive command, and a current interrupt device for voltage-free switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a control device is integrated into the battery cell to enable interaction with functional units, then the battery cell gains intelligence and operational control capability, but the battery cell becomes vulnerable to unauthorized access and manipulation
Solution Approach 1:
The patent introduces an external control device as an intermediary between the user and the battery cell's control device. This external control device establishes a secure communication interface, acting as a mediator that filters and authenticates all commands before they reach the battery cell's control device, thus preventing direct unauthorized access while maintaining operational control capability
2Power
If the battery cell is designed for high-voltage operation to meet power requirements, then the power output is sufficient for motor vehicle applications, but safety risks increase during operation and transportation
Solution Approach 1:
The patent implements preliminary safety actions by integrating a control device that continuously monitors battery status and preemptively activates safety functions. Before hazardous conditions can develop, the control device detects abnormal parameters and triggers protective measures such as isolating the galvanic element or activating cooling systems, thus preventing safety incidents rather than merely responding to them
Solution Approach 2:
The control device serves as an intermediary safety layer between the high-voltage galvanic element and the external environment. It manages voltage output through controlled switching, inserting itself into the electrical circuit to regulate and monitor power flow, thereby enabling high-voltage operation while mitigating safety risks through active control and isolation capabilities
3Reliability
If access control mechanisms are implemented to secure the battery cell, then unauthorized manipulation is prevented, but the complexity of the control device increases
Solution Approach 1:
The control device is designed with multi-functionality, combining authentication, command processing, safety monitoring, and communication functions into a single integrated unit. By making the control device universal and multi-functional, the patent avoids adding separate dedicated security hardware, thus achieving strong access control without proportionally increasing overall device complexity
Data Source
AI summary
A battery cell for a battery of a motor vehicle with a battery cell housing, in which a galvanic element is accommodated. The battery cell can be electrically connected to at least one other battery cell by way of two electrical connection terminals. A control device of the battery cell is operatively connected to at least one functional unit of the battery cell. The control device of the battery cell is designed for the purpose of receiving a command issued by an external control device. The control device includes a verification unit, which is designed for the purpose of verifying an authorization of the external control device to issue the command.