Battery-Priority Display Power Control With Smart Stand Charging
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Solution Overview
Problem
There is a growing need for a device and method that efficiently provides external power to the internal load of a display device equipped with a battery, and also allows for the mounting and movement of external devices connected to the display device without spatial constraints.
Innovation Solution
A display device with a stand that includes a power circuit for receiving external power, a first battery, and a charging and discharging circuit to control charging and discharging of the battery. The device also features one or more processors that manage the charging and discharging circuit to prioritize battery power when external power is not available, and a smart shelf that can be removably attached to the stand for additional power and communication capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery is equipped in the display device to enable movement without spatial constraints, then the display device can operate independently of external power outlets, but the device complexity increases due to the need for power management circuits and battery integration
Solution Approach 1:
The patent combines the external power receiver and battery into an integrated power management system within the stand. The power management circuit seamlessly switches between external power input and battery power output, merging multiple power sources into a unified system that manages power flow automatically, thereby reducing the perceived complexity while maintaining mobility capability
Solution Approach 2:
The stand is designed with multi-functionality by incorporating both external power reception capability and battery storage in a single component. This universal design allows the stand to serve as both a support structure and a power management system, eliminating the need for separate power supply devices and reducing overall system complexity
2Power
If external power is provided to the display device, then the display can operate at full performance, but the battery cannot be charged simultaneously without complex power distribution control
Solution Approach 1:
The power management circuit is designed to automatically prioritize power allocation before any power shortage occurs. When external power is detected, the system preemptively directs power to the display first, then charges the battery with remaining capacity. This preliminary action approach eliminates the need for complex real-time negotiation protocols between power sources
Solution Approach 2:
The power management system operates autonomously by automatically detecting the presence of external power and adjusting power distribution accordingly. The system self-regulates the charging current to the battery based on available external power capacity, eliminating the need for manual intervention or complex user-configurable parameters
3Duration of action of moving object
If the charging current to the battery is increased to reduce charging time, then the battery charges faster, but power theft prevention becomes more difficult without accurate state of charge detection
Solution Approach 1:
The power management circuit incorporates feedback mechanisms that continuously monitor the battery's state of charge and adjust the charging current accordingly. This feedback loop enables the system to maintain high charging currents when safe, while automatically reducing current when the battery approaches full charge or when anomalies are detected, thereby preventing power theft while minimizing charging time
Solution Approach 2:
The charging system dynamically adjusts the charging current based on real-time battery conditions rather than using a fixed current rate. The system transitions between different charging phases (constant current, constant voltage, trickle charging) based on battery state, enabling fast charging when conditions permit while maintaining reliability through adaptive current control
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 solution enables efficient power management, allowing the display device to operate continuously even when external power is not available, and supports the attachment and operation of external devices through the smart shelf, enhancing mobility and functionality.
Implementation Method 1
a first battery, and a charging and discharging circuit configured to control charging and discharging of the first battery
Data Source
AI summary
A display device includes: a display operable in a landscape mode and a portrait mode; a stand and including a power circuit configured to receive external power, a first battery, and a charging and discharging circuit configured to control charging and discharging of the first battery; and one or more processors configured to: control the charging and discharging circuit to charge the first battery using the external power, based on a user command for turning on the display being received, provide a portion of the external power to the display as first driving power, and control the charging and discharging circuit to provide another portion of the external power to the first battery as charging power, where the one or more processors are configured to provide output power of the first battery to the display as second driving power in a battery priority use mode.