Charge Pump Circuit Optimizes Charging Efficiency
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Solution Overview
Problem
Existing electronic devices face inefficiencies in charging due to high input impedance loss and voltage convert ratio, leading to reduced charging speed and increased power supply overheating.
Innovation Solution
An electronic device with a charge pump circuit and a controller that switches among multiple charging modes based on compatibility information from the power supply, such as Power Delivery (PD) and Vendor Defined Message (VDM) support, to optimize charging efficiency and reduce input impedance loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the current output of the power supply is increased to increase charging speed, then the charging speed is improved, but the input impedance loss of the electronic device is increased
Solution Approach 1:
The patent changes the voltage parameter of the power supply output. By increasing the output voltage of the power supply, the charging speed is improved while the input impedance loss is reduced, as power transfer efficiency is improved through optimized voltage levels rather than relying solely on increased current
2Loss of energy
If the output voltage of the power supply is increased to reduce input impedance loss, then the input impedance loss is reduced, but the voltage convert ratio of the charging system is increased
Solution Approach 1:
The patent introduces a charge pump circuit as an intermediary component between the power supply and the electronic device. This charge pump circuit acts as a voltage buffer and regulator, enabling the system to operate at higher voltages to reduce impedance loss while the charge pump manages the voltage conversion, preventing the voltage convert ratio of the main charging system from becoming too high
3Loss of energy
If the output voltage of the power supply is increased to reduce input impedance loss, then the input impedance loss is reduced, but the power supply is easily overheated and the efficiency is reduced
Solution Approach 1:
The patent optimizes the operating parameters of the power supply by operating at higher voltage levels with controlled current, which reduces I²R losses and consequently reduces heat generation in the power supply, improving efficiency while maintaining reduced input impedance loss
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 higher wattage charging with reduced input impedance loss and voltage convert ratio, enhancing overall charging efficiency and preventing damage to the energy storage unit.
Implementation Method 1
a charge pump circuit, electrically connected to a power supply
Data Source
AI summary
An electronic device includes an energy storage unit, a charge pump circuit, a charging circuit, and a controller. The charge pump circuit is electrically connected to the power supply, and the power supply is configured to receive the input electrical energy. The charging circuit is electrically connected between the charge pump circuit and the energy storage unit. The controller is electrically connected with the power supply, the charge pump circuit, and the charging circuit respectively, and the controller controls the charge pump circuit and the charging circuit to switch among a plurality of charging modes according to compatibility information of the power supply.