Dongle Charge Storage Circuit for Power Continuity
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Solution Overview
Problem
Users face issues when connecting or disconnecting devices through dongles or adapters, particularly with the loss of power to accessories during charger disconnection, leading to potential data loss and user dissatisfaction.
Innovation Solution
A dongle with a charge storage circuit that provides continuous power to accessories by switching from a charging device to a host device after charger disconnection, using a regulator and switches to manage power flow and signaling to negotiate power levels between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dongle is used to connect devices with different receptacle types, then device compatibility and connectivity are improved, but power interruption occurs when the charger is disconnected
Solution Approach 1:
The charge storage circuit is pre-charged during normal operation when the charger is connected, storing energy in advance. When the charger is disconnected, this pre-stored energy immediately takes over to maintain power supply without interruption, thus resolving the contradiction between adapter versatility and power continuity.
2Ease of operation
If the charger is disconnected from the dongle, then user convenience and portability are improved, but power supply to the accessory is interrupted
Solution Approach 1:
The charge storage circuit ensures continuous power supply by seamlessly transitioning from charger power to stored energy. This maintains the useful action of powering the accessory without interruption, allowing users to disconnect the charger for convenience while the accessory continues operating on stored power.
3Reliability
If a charge storage circuit is added to the dongle, then power continuity during charger disconnection is improved, but device complexity increases
Solution Approach 1:
The charge storage circuit acts as an intermediary energy buffer between the charger and the accessory. It mediates the power transfer by storing energy from the charger and releasing it when needed, ensuring smooth transition and power continuity while adding minimal complexity through a straightforward energy storage mechanism.
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
Ensures seamless power transition from charger to host, preventing data loss and maintaining accessory functionality during charger disconnection, allowing for continuous operation until the host can take over power supply.
Implementation Method 1
a charge storage circuit, where the charge storage circuit may include a second power supply regulator and one or more capacitors
Data Source
AI summary
Circuits, methods, and apparatus where a dongle or adapter may provide continuous power in the event of a disconnection of a charging device. One example may provide a dongle having a charge storage circuit. A charging device connected to the dongle may be used to power an accessory also connected to the dongle. Following a disconnection of the charging device, the dongle may use the charger storage circuit to provide power to the accessory for a first duration. After the first duration, a host device also connected to the dongle may provide power to the accessory via the dongle.