Adapter State Signaling for Stable Battery Charger Power
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Solution Overview
Problem
Existing charging systems lack the ability to control the charger based on the state of the power-supply adapter, leading to inefficiencies and potential insufficiencies in charging power delivery.
Innovation Solution
A charging system comprising a power-supply adapter with a power conversion circuit and state detection circuit that generates a state indicating signal, and a charger with a charging circuit that adjusts charging power based on this signal, allowing control of the charger in accordance with the adapter's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging system uses a separate power-supply adapter and charger without state communication, then the device complexity is reduced, but the charging power delivery becomes insufficient and unreliable
Solution Approach 1:
The patent implements feedback by having the power-supply adapter transmit a state indicating signal to the charger via the electrical cable. This signal provides real-time information about the adapter's state (such as power availability and status), enabling the charger to adjust its operation accordingly. This feedback mechanism ensures reliable charging power delivery while maintaining a relatively simple system structure.
2Productivity
If the charger operates without receiving state information from the power-supply adapter, then the ease of operation is improved, but the charging power becomes insufficient for proper battery charging
Solution Approach 1:
The state indicating signal transmitted from the power-supply adapter to the charger enables automatic adjustment of charging parameters based on the adapter's real-time state. This eliminates the need for manual intervention or complex user operations, while simultaneously ensuring that charging efficiency is optimized according to the available power supply conditions.
3Reliability
If the power-supply adapter and charger are connected without state communication, then the ease of manufacture is improved, but the charging power delivery becomes unstable and insufficient
Solution Approach 1:
The feedback mechanism through the state indicating signal allows the charger to automatically adapt its charging behavior based on the adapter's state. This ensures stable and reliable power delivery without requiring complex assembly procedures or additional communication interfaces, maintaining ease of manufacture while achieving reliable operation.
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
The system ensures stable and efficient charging power delivery by synchronizing the charger's power output with the adapter's state, preventing insufficient power conditions and improving user safety through galvanic isolation and convenient detachment of the adapter.
Implementation Method 1
a power conversion circuit configured (i) to receive AC power from an AC power supply, (ii) to convert the AC power into DC power, and (iii) to deliver the DC power to an electrical cable
Implementation Method 2
a state detection circuit configured (i) to generate a state indicating signal, (ii) to transmit the state indicating signal to the electrical cable, and (iii) to vary the state indicating signal in accordance with a state of the power-supply adapter
Implementation Method 3
a charging circuit configured (i) to receive DC power and a state indicating signal from the power-supply adapter via the electrical cable, (ii) to convert the DC power into charging power, and (iii) to deliver the charging power to a battery pack
Data Source
AI summary
One aspect of the present disclosure provides a charging system including a power-supply adapter and a charger. The power-supply adapter includes a power conversion circuit and a state detection circuit. The charger includes at least one attachment and a charging circuit. The state detection circuit (i) generates a state indicating signal, (ii) transmits the state indicating signal to an electrical cable, and (iii) varies the state indicating signal in accordance with a state of the power-supply adapter. The charging circuit (i) receives DC power and the state indicating signal from the power-supply adapter via the electrical cable and (ii) varies charging power for charging at least one battery pack in accordance with a variation in the state indicating signal.