Display Power Circuit for Integrated Battery Charging and Backup
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Solution Overview
Problem
Movable display apparatuses face inconvenience as users need to separately charge battery packs using AC power, which requires advance preparation and is not efficient.
Innovation Solution
A charging/discharging apparatus that includes a charging unit to charge a battery pack from an AC power source and a DC-DC converter to convert battery voltage into a voltage for operating the display apparatus, allowing operation both with AC power and battery power, enabling charging during AC power availability and using battery power when AC is not available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery pack is used to enable movable display apparatus operation, then the display apparatus can operate without AC power, but the user must separately charge the battery pack in advance which reduces convenience
Solution Approach 1:
The patent combines the charging function and display apparatus operation into a single integrated system. The battery pack is charged through the display apparatus itself rather than requiring a separate charging process, merging two previously separate functions (charging and operating) into one unified operation.
Solution Approach 2:
The display apparatus serves multiple functions: it can operate as a display device and simultaneously function as a charging device for the battery pack. This multi-functionality eliminates the need for separate charging equipment and processes, allowing the same device to both power operations and recharge the battery.
2Reliability
If the battery pack is charged separately from the display apparatus, then charging can be performed independently, but the user experiences inconvenience of having to charge in advance before use
Solution Approach 1:
The system performs preliminary charging action during periods when the display apparatus is already in use and connected to power sources. Instead of requiring advance charging before first use, the battery is charged in advance during subsequent usage periods, transforming the timing of the charging action from pre-deployment to inter-usage.
Solution Approach 2:
The charging process continues seamlessly during display apparatus operation. The battery pack charges continuously while the display apparatus is being used, ensuring that charging action is ongoing and uninterrupted rather than requiring separate dedicated charging time, thus maintaining continuous useful action of the system.
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 solution allows for seamless operation of display apparatuses using either AC power or battery power, enhancing convenience by eliminating the need for separate charging and enabling continuous use without AC power sources.
Implementation Method 1
a direct current (DC)-DC converter configured to convert a battery voltage of the battery pack into a voltage for operating the display apparatus
Implementation Method 2
a charging unit comprising charging circuitry configured to charge a battery pack
Data Source
AI summary
Provided are a charging/discharging apparatus, an operation method of the charging/discharging apparatus, and a display apparatus including the charging/discharging apparatus. The charging/discharging apparatus includes a charging unit comprising circuitry configured to charge a battery pack, and a direct current (DC)-DC converter configured to convert a battery voltage of the battery pack into a voltage for operating the display apparatus, wherein, in a first mode based on an alternating current (AC) power source being applied to the display apparatus, the charging/discharging apparatus charges the battery pack with a battery voltage less than a secondary voltage generated by the display apparatus from the AC power source through the charging unit, and in a second mode based on the AC power source not being applied to the display apparatus, the charging/discharging apparatus delivers the battery voltage of the battery pack to the display apparatus.