Battery Charging Path Switch for Voltage Drop Prevention
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Solution Overview
Problem
Lithium batteries and lithium polymer batteries experience a shorter service life due to overcharging or over-discharging, leading to frustration for retailers and consumers as products are designed to discourage battery replacement, resulting in low turnover and premature battery degradation.
Innovation Solution
A mobile power charging system comprising a battery, a charging/discharging path switch unit, and a control unit that enables a sleep mode to disable the charging/discharging path when the device is not in use, preventing excessive voltage drop and extending battery life by re-enabling the path when AC power is reintroduced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging/discharging path is kept enabled for battery operation, then the device can function normally, but the battery experiences excessive voltage drop and shortened service life during storage
Solution Approach 1:
The charging/discharging path switch unit dynamically changes the state of the charging/discharging path between enabled and disabled based on operational needs. The control unit monitors device state and automatically switches the path between conducting and non-conducting states, making the system adaptable to different operational phases (storage vs. active use).
Solution Approach 2:
The system enters sleep mode and disables the charging/discharging path in advance during storage periods before actual use begins. This preliminary action prevents voltage drop and battery degradation during storage, while the quick-wake feature allows rapid re-enablement when needed.
2Productivity
If the battery is allowed to discharge during storage, then the device remains ready for immediate use, but the battery voltage drops excessively and service life shortens
Solution Approach 1:
The control unit applies preliminary anti-action by disabling the charging/discharging path before storage-related voltage drop can occur. The sleep mode control command is issued in advance during storage periods, preventing the harmful discharge process before it can degrade the battery, while still allowing quick resumption of normal operation.
3Reliability
If a smart surveillance device is mounted inside the battery packaging, then overcharging/over-discharging is prevented, but the device complexity increases and does not solve the idle storage problem
Solution Approach 1:
The surveillance and control functions are extracted from the battery packaging structure and relocated to the electronic device's existing control unit. The control unit, which already exists in the device, now manages the charging/discharging path switch unit, eliminating the need for additional surveillance devices inside the battery packaging while maintaining protection functions.
4Reliability
If the charging/discharging path is disabled to extend battery life, then voltage drop is prevented, but the device cannot operate normally
Solution Approach 1:
The system dynamically transitions between sleep mode (path disabled) and active mode (path enabled) based on operational requirements. The control unit manages these state transitions, ensuring the charging/discharging path is disabled during storage to protect battery life but quickly enabled when the device needs to operate, thus resolving the contradiction between battery protection and device functionality.
Data Source
AI summary
An electronic apparatus and a charging/discharging management method thereof are provided. The method entails disabling a charging/discharging path of a battery provided by the electronic apparatus and driving the electronic apparatus to enter a sleep mode according to a sleep mode control command, so as to ensure that the battery cannot supply power to the electronic apparatus through the charging/discharging path.