Charge Controller Oscillation Detection for Standby Power Reduction
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Solution Overview
Problem
In charging systems for vehicles, power consumption is high during the stand-by period due to continuous power supply needed for maintaining the switch in an ON state, leading to potential battery depletion and unstable charging initiation.
Innovation Solution
A charge controller that switches the control signal from a non-oscillation to an oscillation state when power supply preparation is complete, using an oscillation state judgment section to activate the charging system only when the oscillation state is detected, reducing unnecessary power consumption and ensuring stable charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If continuous power supply is provided to maintain the switch in ON state during stand-by period, then the charging system can be activated quickly, but power consumption increases and battery may deplete
Solution Approach 1:
The system dynamically adjusts the switch state between ON and OFF based on the oscillation detection status. During stand-by, the switch is OFF to save power, and transitions to ON only when oscillation is detected, making the power consumption adaptive rather than continuous
Solution Approach 2:
The external power source generates periodic oscillation signals during power supply preparation, and the charge controller periodically monitors for these oscillations. This periodic signaling mechanism replaces the need for continuous power supply maintenance
2Productivity
If the switch is kept in ON state during stand-by, then charging can start immediately, but the system becomes less stable due to potential battery depletion
Solution Approach 1:
The external power source performs preliminary action by generating oscillation signals before actual power supply, serving as an advance notification that prepares the charge controller for upcoming power delivery without requiring the switch to remain ON
Solution Approach 2:
The charge controller autonomously detects the oscillation state and self-activates when oscillation is detected, eliminating the need for continuous external control signals or maintained switch ON state, thereby improving system stability
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 reduces power consumption during stand-by periods and ensures stable charging by activating the charging system only when necessary, preventing battery depletion and ensuring timely charging initiation.
Implementation Method 1
an oscillation circuit 37 that generates an oscillation signal
Implementation Method 2
the electromagnetic coil 606 generates an electromagnetic force and turns on a relay 332
Data Source
AI summary
A charge controller for controlling the charging of a battery provided inside a vehicle using a control signal supplied from an external power source apparatus via a power cable includes a control section for controlling the charging of the battery and an activating section for activating the control section inside the vehicle. The external power source apparatus switches the control signal from a non-oscillation state to an oscillation state when the preparation for power supply is completed. The activating section has an oscillation state judgment section for judging whether the input control signal is in the oscillation state or the non-oscillation state and for outputting an oscillation state judgment signal and an activating signal generation section for generating an activating signal for activating the control section when the oscillation state judgment signal is switched from a state indicating non-oscillation to a state indicating oscillation.