Battery Connection Switching for Flexible Charging and Power Output
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Solution Overview
Problem
Existing electronic devices with multiple batteries face inefficiencies in charging and discharging due to limited power storage, high discharge voltages, and the need for flexible charging adaptations, leading to energy loss and reduced power supply efficiency.
Innovation Solution
A charging system that switches the connection relationship between batteries using transistors and switches to enable serial or parallel connections, allowing for flexible charging and discharging, and adapts to various charging adapters, managed by a control circuit to optimize battery performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If batteries are connected in series to increase discharge voltage, then power output is improved, but energy loss increases due to step-down module requirements
Solution Approach 1:
The patent implements dynamic switching between series and parallel battery connections based on real-time power requirements. The control circuit monitors load demands and automatically reconfigures the battery connection mode, allowing the system to operate in series mode when high voltage is needed and switch to parallel mode when high current is required, thereby eliminating the need for energy-consuming step-down modules while maintaining optimal power output.
Solution Approach 2:
The system changes the electrical parameters (voltage and current) by altering the connection configuration between batteries. By switching from series to parallel connection, the system changes the output voltage and current characteristics to match different load requirements, avoiding energy loss associated with voltage conversion through step-down modules.
2Device complexity
If a single battery connection manner is used to reduce circuit quantity, then device complexity is reduced, but charging flexibility is limited
Solution Approach 1:
The patent designs a universal battery management system where a single charging circuit can serve multiple battery configurations. The control circuit intelligently routes charging current to appropriate battery groups based on their charge states, enabling the same physical charging circuit to handle both series and parallel charging scenarios, thus maintaining charging flexibility without increasing circuit quantity.
Solution Approach 2:
The battery system is segmented into multiple independently controllable battery groups, each with its own charge state monitoring. The control circuit can selectively charge different battery groups in different configurations (series or parallel) based on overall power requirements and individual battery states, providing charging flexibility while using a unified charging circuit architecture.
3Quantity of substance
If batteries are charged in parallel to increase storage power, then capacity is improved, but charge-conducting wire restrictions limit performance
Solution Approach 1:
The system dynamically adjusts the charging configuration based on battery charge states and power requirements. When parallel charging is beneficial for increasing storage power, the control circuit activates parallel connection mode with appropriate wire routing. When series charging is more efficient, it switches to series mode, thereby optimizing storage power accumulation while managing wire complexity through intelligent configuration switching.
4Ease of operation
If battery connection manner is fixed to simplify control, then ease of operation is improved, but charging speed and efficiency cannot be optimized
Solution Approach 1:
The battery management system operates autonomously, with the control circuit automatically monitoring battery charge states, calculating optimal charging configurations, and switching between series and parallel modes without user intervention. This self-service approach maintains ease of operation while continuously optimizing charging speed and efficiency based on real-time system conditions.
Solution Approach 2:
The control circuit implements feedback mechanisms by continuously monitoring battery voltage, current, and charge states. Based on this feedback information, the system automatically adjusts the battery connection configuration to optimize charging speed and efficiency, all while maintaining simple operation for the end user through automated control.
Data Source
AI summary
A charging system includes a voltage conversion circuit, a control circuit, an input end Vin and an output end Vout. The voltage conversion circuit and the control circuit are connected to M batteries, the input end Vin is connected to an external power supply, and the output end Vout is connected to a load. The control circuit is configured to switch a connection relationship between the M batteries, to connect at least one of the M batteries to the voltage conversion circuit, where the connection relationship includes at least one of a serial connection or a parallel connection. The voltage conversion circuit is connected to the input end Vin and the output end Vout; is configured to receive power from the external power supply through the input end Vin, and charge the at least one battery; and is further configured to supply power to the load through the output end Vout.