Reverse Charging Voltage Matching for Low-Battery Device Power Transfer
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Solution Overview
Problem
Reverse charging efficiency in electronic devices is relatively low, leading to inconvenience when devices with low battery levels are unable to be charged effectively.
Innovation Solution
A system where a first electronic device boosts its battery voltage to a specified value and performs reverse charging on a second electronic device, which adjusts the voltage to its own battery voltage, optimizing charging efficiency through voltage matching and temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a user device with a small battery capacity is used, then the device is more portable and easier to carry, but the device cannot function as a power source for other devices with larger battery capacities
Solution Approach 1:
The patent inverts the traditional charging relationship by enabling the user device (with smaller battery) to charge the external device (with larger battery). The power supply module in the user device can output power to charge the second battery through the wireless charging module, reversing the conventional direction where only larger batteries can charge smaller ones.
Solution Approach 2:
The user device is designed with multi-functionality: it can both receive power (charge its own battery) and supply power (charge external devices). The power supply module and wireless charging module enable the device to function as both a power consumer and a power source, making it universally applicable in various charging scenarios.
2Ease of operation
If wireless charging is implemented, then charging convenience is improved, but power transmission loss increases compared to wired charging
Solution Approach 1:
The system dynamically selects between wireless and wired charging modes based on the specific situation. The control module can switch between the wireless charging module for convenience and the wired charging connection for efficiency, optimizing the balance between ease of operation and energy loss reduction.
3Reliability
If the battery capacity is increased to ensure sufficient power supply, then the power supply capability is improved, but the device size and weight increase
Solution Approach 1:
The wireless charging module acts as an intermediary that enables power transfer from the user device to external devices without requiring the user device to have a large battery capacity. This mediator allows the system to achieve adequate power supply capability while maintaining device portability by transferring energy on-demand rather than storing large amounts of energy.
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
Improves reverse charging efficiency and user experience by ensuring suitable voltage levels and temperature control, allowing devices with low battery levels to be charged effectively.
Implementation Method 1
a wireless charging module configured to transmit power to the external device wirelessly
Data Source
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AI summary
Embodiments of this application provide a reverse charging system and method, and a related apparatus. The charging system includes a first electronic device and a second electronic device. The first electronic device is configured to boost a first battery voltage of the first electronic device to a first voltage value, and then use the first voltage value to perform reverse charging on the second electronic device. The second electronic device is configured to adjust the first voltage value to a second battery voltage of the second electronic device, and use the second battery voltage to implement charging. The first battery voltage of the first electronic device decreases as power supply duration of the first electronic device increases, and the second battery voltage of the second electronic device increases as charging duration of the second electronic device increases. In this way, the second electronic device can use a voltage suitable for a second battery to charge the battery of the second electronic device, improving reverse charging efficiency.