Dynamic Voltage Adjustment for Fast Charging
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Solution Overview
Problem
Existing standard chargers do not fully utilize their output capability, as they charge devices with a fixed voltage regardless of the charger's output capacity, leading to suboptimal charging performance.
Innovation Solution
A charging method and apparatus that dynamically adjust the output voltage of the charger based on the current value received from the chargeable device, using a preset relation between current and voltage values to maximize the charger's output power and achieve fast charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed output voltage is used for charging, then the charging process is simple and stable, but the charger's output capability is not fully utilized
Solution Approach 1:
The patent implements dynamic voltage adjustment by allowing the chargeable device to send control currents through the DM/DP pins, which the charger detects and converts into corresponding output voltage levels. This transforms the static fixed-voltage charging into a dynamic adaptive charging system that optimizes power delivery based on device needs.
Solution Approach 2:
The system establishes a feedback loop where the chargeable device communicates its charging requirements to the charger through control current signals. The charger detects these signals and adjusts its output voltage accordingly, creating a closed-loop control system that ensures optimal charging performance.
2Power
If the output voltage is increased to maximize power output, then fast charging is achieved, but safety risks increase during disconnection
Solution Approach 1:
The patent implements preliminary detection of control current signals before initiating high-power charging. The charger monitors the DM/DP pins for valid control current from the chargeable device, and only after verification does it adjust the output voltage to higher levels. This preliminary action ensures safe operation and prevents unauthorized or erroneous high-voltage output.
Data Source
AI summary
A charging method, a charging apparatus, a charger, a chargeable device and a charging system are provided. The charging method includes: acquiring a first current value of a control current from a chargeable device; acquiring a first voltage value corresponding to the acquired first current value of the control current based on a preset relation, wherein the preset relation represents correlations between current values and voltage values; and adjusting a voltage value of an output voltage of a charger to the acquired first voltage value corresponding to the first current value of the control current. Accordingly, capability of the charger can be fully used, and fast charging can be achieved.