Segmented Battery Unit Group for Loop-Free Charging Control
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Solution Overview
Problem
Existing battery pack technologies lack descriptions on connecting multiple battery packs for charging and discharging, limiting their flexible use in various applications.
Innovation Solution
An electric storage unit group with rechargeable battery cells connected in a linear or reticular fashion, where charging stops when a cell is fully charged and continues through downstream units, and discharging starts from upstream units when a cell's voltage drops below a threshold, preventing charging or discharging loops and allowing flexible and optimal power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple battery packs are connected in series to increase power capacity, then the power output capability is improved, but the risk of charging/discharging loops increases and control complexity worsens
Solution Approach 1:
The system segments the battery pack into multiple independent battery units, each equipped with its own control circuit. This segmentation allows individual monitoring and control of each unit's charging and discharging state, preventing loops while maintaining high power capability through series connection.
Solution Approach 2:
The control circuit implements feedback mechanisms by continuously monitoring the voltage and charge state of each battery unit. When a unit reaches full charge or low voltage thresholds, the system receives feedback and automatically adjusts the charging/discharging configuration to prevent loops and maintain safety.
2Productivity
If charging continues through fully charged battery units to downstream units, then charging efficiency is improved, but the risk of overcharging and safety hazards increases
Solution Approach 1:
The control circuit performs preliminary assessment of each battery unit's charge state before initiating charging. Units that are already fully charged are identified in advance and excluded from the charging path, preventing overcharging while allowing efficient parallel charging of available units.
Solution Approach 2:
The charging configuration is dynamically adjusted based on real-time charge states of individual battery units. The system can reconfigure which units are charged in parallel and which are isolated, optimizing charging efficiency while maintaining safety through adaptive control.
3Manufacturing precision
If battery units are disconnected one by one as they reach full charge, then charging precision is improved, but the control complexity and time management worsens
Solution Approach 1:
While individual battery units are disconnected upon reaching full charge, the charging process continues without interruption by redirecting current to remaining uncharged units. This maintains continuous useful action (charging) while achieving precise control over each unit's charge state, avoiding idle time.
4Device complexity
If a single charging point is used for the entire battery pack, then the device simplicity is improved, but the flexibility and adaptability for different applications deteriorates
Solution Approach 1:
Each battery unit is designed with universal charging and discharging capabilities through integrated control circuits. This allows any unit to function independently or in combination with others, providing multi-functionality that adapts to various application requirements while maintaining relatively simple individual unit design.
Data Source
AI summary
The present invention relates to an electric storage unit group, a charger, an electronic device, an electric vehicle, a method for charging the electric storage unit, a method for discharging the electric storage unit group, a method for supplying and receiving power, and a method for determining a charging/discharging route in the electric storage unit group, which can provide a method for charging the electric storage unit group in which a plurality of electric storage units are connected in a desired form. The method for charging the electric storage unit group is a method for charging a rechargeable battery cell in an electric storage unit group in which a plurality of electric storage units 11 having rechargeable battery cells are linearly or reticulately connected. At an upstream side of the electric storage unit group, the electric storage unit group is connected to a power supply 12 for charging the electric storage units. The method includes a charging process of, when a rechargeable battery cell constituting a single electric storage unit is fully charged, stopping charging the single electric storage unit, and charging an electric storage unit connected to a more downstream side than the single electric storage unit through the single electric storage unit.