Dynamic Charging Voltage Control for Terminal Devices
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Solution Overview
Problem
Existing charging methods for terminal devices set initial voltage protection and dynamic power management parameters once, leading to inflexible charging speed adjustment, prolonged charging duration, and potential safety hazards due to outdated parameter settings.
Innovation Solution
A method and device that adjust the limiting power supply voltage and battery voltage based on the battery voltage threshold, allowing for dynamic adjustment of charging parameters in real-time to optimize charging speed and safety, including increasing or decreasing voltage and current as necessary based on battery state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If initial Vdpm parameter and constant-voltage protection parameter are set immediately after charger connection and not adjusted subsequently, then charging safety is protected, but charging speed cannot be adjusted flexibly and charging duration becomes excessively long
Solution Approach 1:
The patent implements dynamic adjustment of Vdpm and constant-voltage protection parameters during the charging process based on battery state (charged state and temperature). The processor continuously monitors battery conditions and adjusts parameters in real-time, transitioning from static initial settings to dynamic adaptive control, thereby optimizing both safety and charging speed throughout different charging stages
Solution Approach 2:
The patent changes the voltage parameters (Vdpm and constant-voltage protection parameter) based on battery charged state and temperature conditions. When battery charged state exceeds a threshold or temperature exceeds safety limits, parameters are adjusted to appropriate levels. This parameter adaptation enables flexible charging speed adjustment while maintaining safety boundaries
2Device complexity
If Vdpm is set to only one level, then parameter setting is simple, but charging speed cannot be adjusted flexibly and charging duration is excessively long
Solution Approach 1:
The system transitions from a single fixed Vdpm level to multiple adjustable levels based on battery conditions. The processor dynamically selects appropriate parameter levels during charging, enabling flexible charging speed adjustment without excessive complexity through automated condition-based selection
Solution Approach 2:
The charging system automatically adjusts Vdpm and protection parameters based on self-monitored battery state and temperature, eliminating the need for manual parameter configuration. The system serves itself by making intelligent parameter selections based on real-time conditions, simplifying user interaction while enabling multi-level optimization
3Device complexity
If charger outputs fixed charging voltage for battery charging, then charging control is simple, but charging duration is excessively long when battery voltage is relatively low
Solution Approach 1:
The patent implements dynamic voltage adjustment during charging based on battery voltage state. When battery voltage is low, the system adjusts charging voltage to optimize charging current and speed. This dynamic control adapts voltage output to real-time battery conditions, significantly reducing charging duration compared to fixed voltage charging
Solution Approach 2:
The charging voltage parameter is changed dynamically based on battery voltage thresholds and charged state. The processor monitors battery voltage and adjusts charging parameters accordingly, enabling faster charging when battery voltage is low while maintaining safety and efficiency at higher voltage levels
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach shortens charging duration while ensuring safety by dynamically adjusting charging parameters, preventing prolonged charging times and potential safety hazards associated with outdated settings.
Implementation Method 1
a charging chip, configured to convert a power supply voltage into a battery voltage to charge the battery
Data Source
AI summary
A charging device comprises a charging chip and a processor. The charging chip is configured to convert a power supply voltage into a battery voltage to charge the battery, where the power supply voltage is greater than a limiting power supply voltage, and the battery voltage is less than a limiting battery voltage. The processor is configured to: when a first condition is met, increase both the limiting power supply voltage and the limiting battery voltage, or decrease a charging current while increasing the limiting battery voltage; or when a second condition is met, decrease both the limiting power supply voltage and the limiting battery voltage, or increase the charging current while decreasing the limiting battery voltage.