Power Bank Charging System Using Data Pins for Current Doubling
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Solution Overview
Problem
Conventional power banks are limited by USB and micro-USB specifications, which restrict the electrical current to 2A, hindering quick charging and requiring costly control chips or USB C-type specifications to achieve faster charging.
Innovation Solution
The power bank charging system utilizes a rectifying unit between a power pin and a data transmission pin to allow unidirectional charging current flow, and a transformer with a power converter for AC/DC conversion, enabling simultaneous use of power and data transmission pins to increase the total charging current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB or micro-USB ports are used for charging, then compatibility and ease of operation are improved, but charging speed is limited to maximum 2A current
Solution Approach 1:
The patent applies multi-functionality by making data transmission pins capable of serving dual purposes: their original data transmission function and an additional power transmission function. The data pins are configured to receive power input and transmit it to the battery, effectively converting limited USB/micro-USB ports into multi-functional interfaces that can handle both data and power, thereby achieving quick charging without requiring separate high-power connectors
Solution Approach 2:
The patent changes the electrical parameter configuration of the USB/micro-USB interface by reconfiguring the data pins to accept power input. By altering the electrical role of these pins from purely data transmission to power transmission capability, the system overcomes the 2A current limitation through creative parameter reassignment rather than hardware replacement
2Productivity
If quick charging control chips or USB C-type specifications are adopted, then charging speed is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies self-service by enabling the existing data transmission pins to autonomously perform power transmission without requiring external control chips or additional power management components. The data pins themselves are configured to receive and transmit power, making the system self-sufficient and eliminating the need for expensive quick-charging controllers or USB-C implementations
Solution Approach 2:
The patent extracts the power transmission function from the traditional power pin and relocates it to the data transmission pins. By separating the power transmission capability from the dedicated power pin and embedding it in the data pins, the system eliminates the need for additional control chips while maintaining quick charging capability
3Reliability
If only power pins are used for charging current transmission, then signal integrity is maintained, but total charging current is limited
Solution Approach 1:
The patent merges the power transmission function with the data transmission pins by configuring them to simultaneously handle both functions or to be repurposed for power transmission. This consolidation allows the system to utilize all available pins (power pins plus data pins) for power delivery, effectively doubling the total charging current capacity while maintaining reliable electrical connections through the rectifying circuitry
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 approach results in a 100% increase in charging current, significantly reducing charging time and enhancing charging speed compared to conventional systems.
Implementation Method 1
a first rectifying unit coupled between a first power pin and a first data transmission pin, such that a charging current on the first data transmission pin unidirectionally flows toward the first power pin
Implementation Method 2
the power converter enables AC power to undergo AC/DC conversion, so as to provide the charging current to a second power pin and the third data transmission pin
Data Source
AI summary
A power bank charging system is provided and includes a power pin and a data transmission pin through which a charging current is provided to a power bank device, so as to increase a total charging current of the power bank device and thus shorten a charging time of the power bank device.