Multi-Protocol Charging Control with Cable Current Capability Switching
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Solution Overview
Problem
The challenge of managing multiple charging protocols in electronic devices leads to inefficiencies and poor user experience due to potential mismatches between the power consumption device and the power supply device, resulting in slowed charging speeds and safety risks.
Innovation Solution
A charging method where the power consumption device controls the power supply device to first charge based on a preset parameter, allowing sufficient time for protocol matching before switching to the new protocol, thereby reducing mismatches and improving charging speed and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the power consumption device immediately switches to the second protocol after detecting support, then the charging speed can be increased, but the device may not have sufficient time to complete protocol matching, resulting in charging failures or safety issues
Solution Approach 1:
The power consumption device performs protocol matching with the power supply device before switching to the second charging protocol. This preliminary action ensures that the protocol compatibility is confirmed in advance, preventing charging failures and safety issues while enabling subsequent high-speed charging.
2Reliability
If the power consumption device charges based on preset parameters for an extended period to ensure protocol matching completion, then protocol matching reliability improves, but charging time is increased
Solution Approach 1:
Protocol matching is performed as a preliminary step before high-power charging begins. By completing the matching process in advance during the initial connection phase, the system ensures reliability without significantly extending the overall charging time, as the matching occurs concurrently with initial power transfer.
Solution Approach 2:
The charging system dynamically adjusts between different charging phases: an initial phase for protocol matching and negotiation, followed by a high-speed charging phase once compatibility is confirmed. This dynamic transition optimizes both reliability and charging time by performing matching only when necessary.
3Adaptability or versatility
If the system supports multiple charging protocols simultaneously, then adaptability and versatility improve, but device complexity and difficulty of protocol management increase
Solution Approach 1:
Instead of having the power supply device manage multiple protocols, the power consumption device takes control and manages the protocol selection and switching. This inversion simplifies the power supply device while enabling the power consumption device to optimize charging based on its specific requirements and the detected power supply capabilities.
Solution Approach 2:
The power consumption device performs preliminary detection of power supply device capabilities and completes protocol matching before initiating charging. This advance preparation simplifies subsequent charging operations by pre-resolving protocol compatibility issues.
Data Source
AI summary
This disclosure introduces a method and a power consumption device which is configured to: connect to a power supply device through a cable, and control the power supply device to supply power to the power consumption device. Both the power consumption device and the power supply device support a first protocol and a second protocol. The method includes: controlling the power supply device to charge the power consumption device according to the first protocol, when it is determined that the power supply device supports the second protocol, controlling the power supply device to charge the power consumption device based on the charging parameter, and after controlling the power supply device to charge the power consumption device based on the charging parameter, controlling, based on obtained through-current capability information of the cable, the power supply device to charge the power consumption device according to the second protocol.