Switchable Battery Cell Control for Parameter Homogeneity
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Solution Overview
Problem
Existing battery management systems for electric vehicles fail to achieve optimal cell parameter distribution, leading to inhomogeneities and inefficiencies due to the inability to dynamically switch battery cells between active and passive states based on real-time conditions.
Innovation Solution
A method utilizing switchable battery cells with integrated switching elements and monitoring units, where a control unit processes measurement signals to create a virtual map of cell parameters and adjusts switching configurations to maintain a predetermined distribution function, ensuring optimal cell parameter distribution and secondary conditions such as temperature and power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual battery cells are bypassed or deactivated to manage defective cells, then reliability is improved, but inhomogeneities in cell parameters worsen
Solution Approach 1:
The patent applies dynamics by enabling switchable battery cells to dynamically transition between active and passive states based on real-time monitoring of cell parameters. The switching elements allow the battery system to adapt its configuration continuously, optimizing both reliability and parameter distribution homogeneity through dynamic reconfiguration rather than static bypassing.
Solution Approach 2:
The patent changes the operational state parameter of battery cells by introducing switching elements that can alter the electrical connection status of individual cells. This allows precise control over which cells are active in the circuit, enabling the system to maintain homogeneous cell parameter distribution while managing defective cells through parameter-based switching decisions.
2Productivity
If battery cells are switched to active and passive states based on cell voltage thresholds, then productivity is improved, but device complexity worsens
Solution Approach 1:
The patent implements feedback through monitoring units that continuously measure cell parameters and provide this information to control units. This feedback mechanism enables intelligent switching decisions based on actual cell states rather than predetermined thresholds, improving charging efficiency while managing complexity through automated closed-loop control.
Solution Approach 2:
The patent applies self-service by enabling the battery system to autonomously manage its own cell configuration through integrated monitoring and control units. The system automatically switches cells between active and passive states based on real-time parameter monitoring, eliminating the need for external intervention and simplifying overall system operation despite the complexity of individual cell management.
Data Source
AI summary
A method for operating a battery of an at least partially electrically operated/driven functional device, a corresponding battery, and a corresponding functional device. A control unit of the battery receives measurement signals relating to a respective parameter of the battery cells from a plurality of switchable battery cells of the battery. The control unit prepares a location-resolved distribution function of the respective cell parameter within the battery on the basis of the measurement signals. By activating the switching elements of the switchable battery cells according to a predetermined switching rule, the control unit produces a pattern of battery cells switched to active and passive. A predetermined location-resolved distribution function of the respective cell parameter is fulfilled and at least one predetermined secondary condition relating to an operation of the functional device and/or the battery is maintained.