Battery Cell Arrangement with Independent Switching for Flexible Voltage Management
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Solution Overview
Problem
Existing battery systems lack flexibility in managing and interconnecting battery cell arrangements, leading to inflexible adaptation to different usage scenarios and inadequate failure protection, as they typically monitor and manage entire battery modules or groups of cells collectively rather than individually.
Innovation Solution
A battery system comprising multiple battery cell arrangements with logical switches and an evaluation unit that allows independent activation and bypassing of each cell arrangement, enabling flexible interconnection and redundant design for enhanced failure protection and efficient energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If battery cell arrangements are permanently interconnected in fixed groups or modules, then the battery structure is simple and easy to manufacture, but the system lacks flexibility in adapting to different usage scenarios and cannot provide adequate failure protection
Solution Approach 1:
The battery is divided into multiple independently switchable battery cell arrangements, where each arrangement can be individually activated or deactivated. This segmentation allows flexible reconfiguration of the battery system to adapt to different voltage and capacity requirements while maintaining a relatively simple overall structure through modular design.
Solution Approach 2:
The battery system incorporates dynamic switching capability through first and second switches in each battery cell arrangement, enabling real-time reconfiguration of active battery cells. This dynamic adjustment allows the system to adapt to varying usage scenarios and provide failure protection by isolating defective cells without manual intervention.
2Reliability
If entire battery modules are monitored collectively, then the monitoring system is simple and cost-effective, but individual faulty cell arrangements cannot be isolated for failure protection
Solution Approach 1:
The monitoring system is segmented to evaluate each battery cell arrangement independently through distributed evaluation units. This allows individual faulty arrangements to be identified and isolated while maintaining reliable operation of healthy cells, achieving high failure protection without requiring overly complex centralized monitoring.
Solution Approach 2:
Each battery cell arrangement includes its own evaluation unit and switching mechanism that can autonomously detect faults and activate bypass switches to isolate defective cells. This self-service capability enhances reliability by enabling automatic failure protection without adding complex external monitoring infrastructure.
3Adaptability or versatility
If fixed battery configurations are used, then manufacturing and assembly are simple, but the system cannot efficiently manage different voltage levels and energy requirements
Solution Approach 1:
The battery system uses segmented battery cell arrangements that can be independently configured to meet different voltage and capacity requirements. Each arrangement is a complete modular unit that can be assembled using standardized procedures, maintaining manufacturing simplicity while enabling flexible voltage management through selective activation of different cell combinations.
Data Source
AI summary
A battery and a battery system including such a battery. The battery includes: a first and a second battery cell arrangement, each including at least one battery cell, a first switch, and a second switch, and an evaluation unit. In each battery cell arrangement, the first switch is connected in series to the battery cell of the battery cell arrangement and the second switch is connected in parallel to the series connection made up of the battery cell and its associated first switch. The battery cell arrangements are connected in series. The evaluation unit is configured to activate the switches of a particular battery cell arrangement independently of the switches of particular other battery cell arrangements.