Mobile Charge/Discharge Device Power Allocation Circuit
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Solution Overview
Problem
The existing mobile charge/discharge devices face challenges due to the large size and number of passive elements required, leading to increased heat generation and reduced battery lifespan, as well as difficulties in circuit design and safety concerns when charging and discharging simultaneously.
Innovation Solution
A mobile charge/discharge device with a detection circuit and controlling circuit that optimally allocates power between the adaptor and the mobile device, using a bypass circuit to directly supply power to the device and store excess energy, reducing the need for multiple ICs and passive elements, and employing a single fast charge/discharge IC to manage voltage and current efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple step-up/down ICs and passive elements are used to manage power conversion, then voltage regulation capability is improved, but device complexity and circuit area increase
Solution Approach 1:
The patent combines multiple power management ICs into a single integrated power management chip that handles both step-up and step-down conversions. This merging reduces the total number of discrete ICs and passive elements, simplifying the circuit while maintaining the ability to regulate voltage for both battery charging and device power supply.
Solution Approach 2:
The power management chip is designed with multi-functional capabilities to perform both step-up voltage conversion for battery charging and step-down voltage conversion for device power supply. This universal design eliminates the need for separate dedicated ICs for each function, reducing overall circuit complexity.
2Productivity
If multiple passive elements are used for power management, then power conversion efficiency is improved, but heat generation increases
Solution Approach 1:
By merging multiple passive elements into an integrated power management chip with optimized internal routing and fewer connection points, the patent reduces the total resistance and inductance in the power path. This minimizes power losses and heat generation while maintaining efficient power conversion.
3Adaptability or versatility
If multiple passive elements are used in the circuit, then power management capability is improved, but manufacturing difficulty increases
Solution Approach 1:
The patent integrates multiple power management functions into a single chip, dramatically reducing the number of discrete components that need to be placed and connected on the circuit board. This simplifies the manufacturing process, reduces assembly complexity, and improves ease of manufacture while maintaining full power management capability.
4Speed
If a bypass circuit is used to directly supply power, then charging speed is improved, but circuit complexity increases
Solution Approach 1:
The bypass circuit is integrated within the power management chip rather than being a separate external circuit. This internal integration provides the fast charging pathway without adding external complexity, as the bypass functionality is embedded in the same chip that handles normal power management operations.
Data Source
AI summary
A mobile charge/discharge device for being electrically connected to a power source and a first power receiving device is disclosed. The mobile charge/discharge device includes a detection circuit detecting a first working power of the power source and a second working power of the first power receiving device; an input port having a first power supply pin for being electrically connected to the power source; a first output port having a second power supply pin for being electrically connected to the first power receiving device; and a controlling circuit controlling the power source to supply the first power receiving device with a power according to one of the first working power and the second working power and supply the mobile charge/discharge device with a power according to the difference of the first working power and the second working power at the same time.