Dual-Battery Power Control for Accurate Operable Time Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems fail to accurately estimate the operational time of an electronic device when multiple batteries are connected, as they cannot acquire information from batteries that are not supplying power.
Innovation Solution
An electronic device with a CPU and memory that calculates operable times based on information from connected batteries, using information from a supplying battery to estimate the operable time of a non-supplying battery, and switches power supply modes to optimize battery usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If power is supplied from any one of the batteries, then the electronic device can operate, but information cannot be acquired from the battery that is not supplying power
Solution Approach 1:
The system performs preliminary actions by acquiring battery information from both batteries before selecting which battery to supply power. This allows the device to store and compare battery status information in advance, enabling informed decisions about power supply selection while ensuring all battery data is captured beforehand.
Solution Approach 2:
The control unit acts as an intermediary that manages information flow between the batteries and the device. It selectively acquires information from the non-supplying battery through controlled power supply mode switching, mediating the information acquisition process to overcome the limitation of direct power supply operation.
2Power
If power is supplied from multiple batteries simultaneously, then more power is available, but the system cannot estimate operable time for individual batteries
Solution Approach 1:
The system segments the power supply function by controlling each battery to supply power separately at different time points. This segmentation allows the control unit to acquire information from each battery individually while maintaining the overall multi-battery power supply capability, enabling precise operable time estimation for each battery.
Solution Approach 2:
The system dynamically switches between different power supply modes, transitioning from one battery supplying power to the other battery supplying power. This dynamic switching enables the acquisition of battery information under different operational conditions, providing comprehensive data for accurate operable time estimation.
3Loss of information
If the battery not supplying power is switched to supply power, then information can be acquired, but device operation is interrupted
Solution Approach 1:
The control unit performs preliminary acquisition of battery information including discharge current data before switching power supply modes. By gathering all necessary information in advance while one battery supplies power, the system avoids interruptions and maintains continuous operation.
Solution Approach 2:
The system uses feedback from the first battery's discharge current information to estimate the second battery's discharge current. This feedback mechanism allows the control unit to acquire necessary information from both batteries without physically switching power supply sources, maintaining continuous device operation.
Data Source
AI summary
An electronic device comprises a power receiving unit and a control unit. In a first mode in which the power receiving unit receives power from a first battery and does not receive power from a second battery, the control unit calculates a first operable time based on a plurality of information relating to the first battery acquired from the first battery, and calculates a second operable time based on information other than information of a discharge current of the second battery among a plurality of information relating to the second battery acquired from the second battery and the information of the discharge current of the first battery acquired from the first battery.