Power Bank Authentication and Charging Control
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Solution Overview
Problem
The inefficiency of existing power bank solutions for mobile terminals, which require human interaction and multiple units for continuous charging, and the effort involved in providing public charging services.
Innovation Solution
A device with a rechargeable battery, computer unit, and memory that authenticates users or terminals via an authentication process, allowing charging only upon successful authorization, using existing wired connections for both power and data transfer, enabling efficient and automated public charging without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power banks are provided as public charging devices, then mobile terminals can be charged outside home, but human interaction is required and multiple power banks are needed for continuous charging
Solution Approach 1:
The power bank system performs automatic authentication with the terminal device without requiring human intervention. The computer unit automatically sends authentication requests, receives responses, and controls charging current based on authentication results, enabling the system to serve itself and eliminating the need for manual operation.
Solution Approach 2:
The system maintains continuous charging capability through automated authentication and current control. By implementing persistent authentication mechanisms and continuous monitoring of charging status, the power bank can provide uninterrupted charging service without requiring multiple physical units to be carried.
2Reliability
If authentication processes are implemented for charging, then charging security is improved, but user interaction and authentication time are increased
Solution Approach 1:
Authentication is performed automatically as a preliminary step before charging begins. The computer unit sends authentication requests and processes responses in advance, so that once authenticated, the charging process can proceed without repeated interruptions. This preliminary authentication establishes trust for the charging session.
Solution Approach 2:
The authentication process is fully automated between the computer unit and terminal device without requiring user intervention. The system independently manages authentication credentials, sends requests, verifies responses, and controls charging current based on authentication outcomes, eliminating manual authentication steps.
3Device complexity
If existing USB connections are used for both charging and data transfer, then device complexity is reduced, but charging and data transfer cannot occur simultaneously
Solution Approach 1:
The system alternates between charging intervals and data transfer intervals through periodic switching. The computer unit controls the connection to switch between providing charging current and enabling data transfer, creating alternating time windows for each function. This periodic alternation allows both operations to occur sequentially through the same connection.
Solution Approach 2:
The connection mode is made dynamic rather than static. The computer unit actively switches the USB connection between charging mode and data transfer mode based on operational requirements. This dynamic switching enables the single connection to adapt its function over time, providing both charging and data transfer capabilities.
Data Source
AI summary
The invention relates to a device, in particular a power bank (20), comprising:at least one port (24) for connecting the device to a terminal (10);at least one memory (22) for storing useful data;at least one rechargeable battery (26) for supplying a charging current to the terminal;at least one computer unit (21);wherein the computer unit (21) is configured, in particular programmed,a) to send an authentication request (Req1) to the terminal (10); andb) to receive a response (Res1) to the authentication request (Req1), wherein the charging current is interrupted within a charging interval (L1, L2, L3) or the charging interval (L1, L2, L3) is not initialized if successful authentication is not carried out by means of the authentication request and response.