Battery Pack Power Information Control for Unintentional Power-Off
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Solution Overview
Problem
Electronic devices face issues with unintentional power-off due to excessive power consumption exceeding the capacity of the battery pack, leading to data loss and increased production costs from the need for power saving circuits, as well as design challenges with larger battery packs to accommodate rising power demands.
Innovation Solution
An electronic device with a battery pack that includes a storing unit for power information and an acquiring unit in the main unit to control operations based on this information, eliminating the need for a power saving circuit and preventing mistaken battery pack insertion through detectable parts on the battery pack and main unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power consumption is increased to meet higher device requirements, then device performance is improved, but unintentional power-off occurs due to exceeding battery pack capacity
Solution Approach 1:
The battery pack performs preliminary detection of its own power capacity and communicates this information to the main unit before power consumption occurs. The main unit uses this advance information to pre-adjust operational parameters, ensuring power consumption remains within safe limits and preventing unintentional power-off events.
Solution Approach 2:
A feedback mechanism is established where the battery pack continuously provides power information to the main unit, which then adjusts its operation accordingly. This closed-loop control ensures that power consumption is dynamically matched to battery capacity, maintaining power supply stability while allowing high performance operation.
2Reliability
If a power saving circuit is added to prevent unintentional power-off, then power supply stability is improved, but production cost increases
Solution Approach 1:
The battery pack performs self-detection of its power capacity and autonomously communicates this information to the main unit. This self-service capability eliminates the need for complex external power saving circuits, as the battery itself provides the necessary control information, thereby reducing production costs while maintaining power supply stability.
Solution Approach 2:
Power information serves as an intermediary that bridges the battery pack and main unit, enabling coordinated power management without requiring direct complex control circuits. This information-mediated approach simplifies the hardware architecture while ensuring reliable power supply.
3Power
If the number of cells in the battery pack is increased to cope with rising power consumption, then power capacity is improved, but battery pack weight increases
Solution Approach 1:
Instead of statically increasing battery capacity, the system dynamically adjusts power consumption based on the battery pack's actual power information. This dynamic adaptation allows the device to operate at high performance levels when power is available while consuming less power when capacity is limited, eliminating the need for heavier batteries.
Solution Approach 2:
The system changes operational parameters (such as processing speed, display refresh rate, or peripheral power states) based on battery power information. By adjusting these parameters, the device can maintain reliable operation with a lighter battery pack, as power consumption is optimized to match available capacity rather than requiring excess capacity for peak demands.
4Reliability
If power information is continuously monitored and operation control is optimized, then power supply stability is improved, but device complexity increases
Solution Approach 1:
The complex power detection and information management functions are extracted from the main unit and placed in the battery pack. This extraction simplifies the main unit's control system, as it only needs to receive and act on power information rather than perform complex monitoring and analysis, thereby maintaining power supply stability with reduced overall system complexity.
Data Source
AI summary
An electronic device includes a storing unit which is provided on a battery pack and which retains power information of the battery pack, an acquiring unit which is provided in the main unit and which acquires the power information of the battery pack from the storing unit, and a control unit which is provided in the main unit and which controls the operation of the main unit based on the power information of the battery pack.