Battery Module Switching for Series-Parallel Power and Duration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery packs configured in series have shorter duration but higher power, while parallel configurations offer longer duration but lower power, necessitating a system that can dynamically switch between structures to maximize advantages and ensure stable battery diagnosis.
Innovation Solution
A battery control system with a battery management system (BMS) that detects events for structure conversion and controls switches to connect battery module groups in series or parallel, adjusting threshold values for diagnosis based on the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery modules are configured in parallel, then battery capacity and duration are improved, but power output decreases
Solution Approach 1:
The patent implements dynamic switching between parallel and series configurations using control circuits that can change the battery pack's internal structure in real-time. The control circuit receives power requirements from the load and automatically reconfigures the battery modules accordingly, transforming a static system into a dynamic one that adapts to varying power demands.
Solution Approach 2:
The patent changes the electrical connection parameters of the battery modules by switching between parallel and series configurations. By altering the voltage and current distribution parameters through reconfiguration, the system can optimize for either duration (parallel) or power output (series) based on operational requirements.
2Power
If battery modules are configured in series, then power output is improved, but battery duration decreases
Solution Approach 1:
The control circuit dynamically switches the battery configuration from series to parallel when duration is needed, and from parallel to series when power is needed. This dynamic adaptability allows the system to optimize performance based on real-time power requirements without being constrained by a fixed configuration.
Solution Approach 2:
The system changes the electrical parameters by reconfiguring the battery modules from series to parallel connection. This parameter change transforms the voltage and current characteristics, enabling the system to extend duration when operating in parallel configuration instead of being limited by the fixed series configuration.
3Adaptability or versatility
If battery structure is converted between series and parallel, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent divides the battery pack into multiple independent battery modules that can be individually controlled and reconfigured. This segmentation allows flexible combination of modules in series or parallel configurations through switching circuits, enabling adaptability while managing complexity through modular design.
Solution Approach 2:
The control circuit is designed to perform multiple functions: monitoring battery status, determining power requirements, and executing reconfiguration switching. This multi-functional universal controller simplifies the overall system by consolidating control logic into a single intelligent unit rather than requiring separate dedicated circuits for each function.
4Adaptability or versatility
If switches are added to enable structure conversion, then adaptability is improved, but device complexity increases
Solution Approach 1:
The switching mechanism is segmented into modular components that correspond to individual battery module groups. Each switch controls a specific reconfiguration operation, and the segmented approach allows the system to add complexity only where needed for each module group rather than requiring a monolithic complex switching system.
Solution Approach 2:
The control circuit performs preliminary assessment of power requirements and battery status before initiating any switching operation. By evaluating conditions in advance and only switching when necessary, the system minimizes the frequency of switching operations and reduces the operational complexity of the switching components while maintaining adaptability.
Data Source
AI summary
A battery control system includes a first battery module group, a second battery module group, a first switch connecting an end of the second battery module group to a first contactor or open the end of the second battery module group, a second switch connecting an end of the first battery module group to the end of the second battery module group or a second contactor, and a battery management system (BMS) connected to the first switch and the second switch. The BMS detects an event for battery structure conversion, controls the first switch and the second switch to connect the first battery module group and the second battery module group in series or in parallel, based on the detected event, and adjusts a threshold value for battery diagnosis based on whether the first battery module group and the second battery module group are connected in series or in parallel.