Power Transmission Path Segmentation for Fast Load Startup
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Solution Overview
Problem
Information processing devices that rely on batteries for power face delays in starting up load devices when connected to external power sources with low battery capacity, as the initial power required to start these devices exceeds the battery's remaining capacity, leading to prolonged startup times.
Innovation Solution
The implementation of multiple power transmission paths in an information processing apparatus, allowing the controller to initially start up using power from an external device, then request and utilize a higher power amount for load devices, and if insufficient, direct this power to the battery for charging, thereby reducing startup time for load devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is supplied from the battery to start up the load device, then the device can operate independently, but the startup time is prolonged when battery capacity is low
Solution Approach 1:
The power transmission paths are segmented into multiple independent routes: a first path from the external device to the controller, a second path from the external device to the load device, and a third path from the external device to the battery. This segmentation allows power to be directed along different paths based on startup requirements, enabling the load device to receive power directly from the external device during startup without waiting for battery charging.
2Loss of time
If the controller requests higher power amount from the external device, then the load device can start up faster, but the external device may not be able to supply sufficient power
Solution Approach 1:
The controller dynamically adjusts the requested power amount in two stages: initially requesting a first power amount sufficient for controller startup, then after successful startup, requesting a second power amount greater than the first to enable load device startup. This dynamic adjustment ensures the external device is not overwhelmed while still achieving fast startup when power is available.
3Loss of time
If multiple power transmission paths are implemented, then startup time is reduced, but the device complexity increases
Solution Approach 1:
The interface is designed with multi-functionality to handle both data communication and power transmission through the same connection. The switching element serves multiple purposes: routing power during different startup phases and managing power flow between the external device, controller, battery, and load device. This universal design reduces the need for separate dedicated components for each function.
Data Source
AI summary
An information processing apparatus includes an interface, a first load device, a battery, a controller, and a plurality of power transmission paths including first to third power transmission paths, wherein the controller is configured to start up the controller with power having a first power amount from an external device via the interface, request a second power amount greater than the first power amount to the external device, determine whether it is possible to receive power supply of the second power amount from the external device, supply power to the first load device via the second power transmission path to start up the first load device, and supply the power to the battery via the third power transmission path.