Charging Protocol Control for Faster Current and Voltage Ramp-Up
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Solution Overview
Problem
Existing charging technologies face slow charging speeds due to the slow rise of current or voltage during the adjustment process, as the output parameters are adjusted at a small fixed step, prolonging the time to reach specified levels.
Innovation Solution
Implementing a charging control method that adjusts electrical parameters in discrete, larger steps by increasing the difference between adjacent time periods' power signals, allowing for quicker voltage or current rise to target values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the charger adjusts output current or voltage at a small fixed step, then the charging parameter adjustment is stable and controllable, but the current or voltage rise speed is slow, resulting in slow charging speed
Solution Approach 1:
The patent applies dynamics by making the electrical parameter adjustment step variable rather than fixed. The adjustment step is dynamically determined based on the difference between current and target electrical parameters, allowing larger steps when far from target and smaller steps when approaching target, thus optimizing both speed and precision
Solution Approach 2:
The patent changes the parameter of adjustment step size from a fixed small value to a variable value that adapts based on the distance to target parameters. This parameter change enables faster convergence to target current or voltage while maintaining control stability
2Productivity
If the charger uses a fixed small adjustment step for electrical parameters, then the charging control is precise and stable, but the charging speed is slow due to prolonged adjustment time
Solution Approach 1:
The patent implements dynamic adjustment step sizing where the step magnitude changes based on real-time feedback of the difference between current and target electrical parameters. This dynamic approach reduces the overall adjustment duration while maintaining charging control stability
Solution Approach 2:
The patent applies skipping by allowing larger adjustment steps when the system is far from target parameters, effectively 'skipping' through intermediate values to reach the target faster. This rushes through the early adjustment phase while still achieving the goal efficiently
Data Source
AI summary
After a charger establishes a connection to an electronic device according to a first charging protocol, a charging circuit of the electronic device receives, in a first time period under the first charging protocol, a first power signal output by the charger, where the first power signal has a first electrical parameter; and receives, in a second time period under the first charging protocol, a second power signal output by the charger, where the second power signal has a second electrical parameter. The second electrical parameter is greater than the first electrical parameter, and the second time period is after the first time period and is adjacent to the first time period. Therefore, in a current or voltage rise phase, a current or voltage rise speed can be increased, thereby increasing the charging speed.