Battery Unit Voltage Adjustment Connector
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Solution Overview
Problem
Existing battery systems face challenges in maintaining uniform cell and module voltages across multiple battery units, leading to voltage variations that can result in inefficient energy use and increased system size and cost.
Innovation Solution
A battery system comprising multiple battery units with a connector for external voltage adjustment and a voltage adjustment necessity determination unit, which connects an external unit only to units requiring voltage adjustment, enabling necessary voltage equalization without increasing system size or cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage adjustment function is provided on the side of a charger of a battery pack system, then voltage adjustment can be realized, but the system size and cost increase
Solution Approach 1:
The voltage adjustment function is extracted from the charger and relocated to a specific battery module within the battery pack. This allows voltage adjustment capability to be embedded directly in the battery system without requiring external charger intervention, thereby reducing system size while maintaining the essential voltage adjustment function.
Solution Approach 2:
The battery module performs voltage adjustment on itself through an integrated voltage adjustment unit. This self-service approach eliminates the need for external voltage adjustment equipment, reducing both system size and cost while maintaining the ability to equalize cell voltages.
2Power
If a plurality of battery modules are incorporated to obtain a large output, then output increases, but voltage variation among battery modules occurs
Solution Approach 1:
Each battery module is equipped with its own voltage adjustment unit that can independently detect and adjust voltage variations within that specific module. This localized approach allows each module to maintain optimal voltage levels despite variations across the entire battery pack, enabling high output while maintaining voltage uniformity.
Solution Approach 2:
The voltage adjustment unit continuously monitors cell voltages within each battery module and automatically activates voltage adjustment when variation exceeds a predetermined threshold. This feedback mechanism ensures voltage uniformity is maintained dynamically as the battery operates, allowing the system to deliver high output power reliably.
3Reliability
If voltage adjustment is performed on all battery units, then voltage uniformity is maintained, but system complexity and cost increase
Solution Approach 1:
Voltage adjustment is performed selectively only on battery modules where it is actually needed, rather than on all modules universally. The voltage adjustment unit detects voltage variation and activates adjustment only when the variation exceeds a predetermined threshold, thereby maintaining voltage uniformity while minimizing system complexity and cost.
Solution Approach 2:
The battery pack is divided into multiple independent battery modules, each with its own voltage adjustment capability. This segmentation allows voltage adjustment to be applied locally only where needed, rather than requiring a centralized complex control system that would need to manage all modules uniformly, thus reducing overall system complexity.
Data Source
AI summary
A battery system is provided with a plurality of battery units each including a battery module consisting of a plurality of battery cells, a unit control unit, and a connector, and controls the overall operation of the respective battery units in a main control unit. To the plurality of connectors of the battery units, an external unit can be selectively connected so that voltage adjustment for inhibiting voltage variations among the plurality of battery cells or the plurality of battery modules can be realized by using the external unit. The external unit is connected to the battery unit for which voltage adjustment is necessary on the basis of a voltage adjustment necessity determination.