Battery Charging Control With Temperature-Triggered CV Transition
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Solution Overview
Problem
Fast charging technologies cause excessive temperature rise in electronic devices, leading to impaired performance and user discomfort, and existing temperature control strategies result in longer charging times due to heat loss and excessive current adjustments.
Innovation Solution
A charging method that switches from constant-current charging to constant-voltage charging and back to constant-current charging with adjusted currents, monitoring temperature thresholds to maintain a smooth temperature curve and increase average charging current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant-current charging is used to achieve fast charging, then charging speed is improved, but temperature rises excessively
Solution Approach 1:
The patent implements dynamic switching between constant-current charging and constant-voltage charging modes based on real-time temperature monitoring. When temperature exceeds the threshold during constant-current charging, the system dynamically transitions to constant-voltage charging to reduce heat generation, and switches back when temperature returns to acceptable levels, creating an adaptive charging process that balances speed and thermal management
Solution Approach 2:
The patent changes the charging parameter from constant current to constant voltage when temperature thresholds are exceeded. This parameter transformation allows the system to maintain effective charging while controlling temperature rise, as constant-voltage charging inherently limits current and thus heat generation compared to constant-current charging
2Temperature
If constant current is adjusted excessively to control temperature, then temperature control is improved, but charging time increases
Solution Approach 1:
The patent employs periodic temperature monitoring and rhythmic switching between charging modes. The system monitors temperature continuously and switches between constant-current and constant-voltage charging in a periodic manner based on temperature thresholds, preventing excessive temperature control adjustments while maintaining effective charging throughout the process
Solution Approach 2:
The patent introduces constant-voltage charging as an intermediary mode between constant-current charging phases. This intermediary charging mode acts as a buffer that reduces temperature without completely stopping charging, thereby maintaining faster charging times compared to traditional methods that would stop charging entirely for temperature control
3Temperature
If constant-current charging is switched directly to another constant current for temperature control, then temperature control is achieved, but heat capacity is lost
Solution Approach 1:
The patent ensures continuous charging action by transitioning to constant-voltage charging rather than stopping or switching directly to a lower constant current. This continuous charging approach maintains the charging process without interruption, preserving heat capacity and energy efficiency while still achieving temperature control through the change in charging mode
Data Source
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AI summary
A charging method and device, an electronic device and a storage medium are provided in the present disclosure. The charging method comprises: obtaining a first temperature at a preset position on the electronic device when constant-current charging is performed on the battery at a first constant current; in response to that the first temperature exceeds a preset first temperature threshold, obtaining a first voltage currently present at a designated position in the electronic device, and obtaining a second constant current lower than the first constant current; performing first constant-voltage charging on the battery at the first voltage until a charging current during the first constant-voltage charging is changed to the second constant current; and performing the constant-current charging on the battery at the second constant current. Thus, in nextments of the disclosure, by adding the first constant-voltage charging between a first constant-current charging and a second constant-current charging, the first constant-current can be adjusted slowly to the second constant-current for charging, it is thus possible to increase an average charging current and facilitate reduction in the time spent in charging.