Power Allocation Switch for High Efficiency Supply
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Solution Overview
Problem
Conventional switching power supplies face a challenge in meeting the 80% power conversion rate requirement due to the low power conversion rate of auxiliary power devices, which affects the overall efficiency and compliance with EPA regulations, especially during normal operation modes.
Innovation Solution
A power allocating apparatus that uses a first switch element and a control device to selectively allocate power from a high power conversion rate main power supply module to both main and auxiliary loads, while switching off the auxiliary power supply during normal operation to improve overall power conversion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the auxiliary power device operates continuously to maintain basic system operation, then the system reliability is improved, but the overall power conversion rate deteriorates due to the low efficiency of the auxiliary power supply
Solution Approach 1:
The patent combines the main power device and auxiliary power device into a unified power supply system with a shared control mechanism. The control device integrates the control of both power devices, allowing them to work cooperatively rather than independently, enabling the system to achieve both reliability and energy efficiency through coordinated operation
Solution Approach 2:
The patent implements dynamic control of the auxiliary power device based on real-time system conditions. The control device adjusts the operating state of the auxiliary power device according to load requirements and main power device status, transitioning between active and standby states to optimize the balance between reliability and energy consumption
2Ease of manufacture
If the auxiliary power device is implemented with low power conversion rate to reduce cost, then the manufacturing cost is reduced, but the overall power conversion rate of the switching power supply deteriorates
Solution Approach 1:
The patent applies partial action by having the auxiliary power device operate only when necessary rather than continuously. The control device determines the optimal operating periods for the auxiliary power device, allowing it to remain in a low-power or standby state during periods when the main power device can handle the load, thus reducing overall energy loss while maintaining system functionality
Solution Approach 2:
The patent changes the operational parameters of the auxiliary power device dynamically. The control device adjusts parameters such as duty cycle, switching frequency, and power output level based on system conditions, enabling the auxiliary power device to operate at optimal efficiency points only when needed, thereby improving the overall power conversion rate without increasing manufacturing cost
Data Source
AI summary
A power allocating apparatus has a plurality of power supply modules coupled to a plurality of loads via a plurality of power lines, respectively. The power allocating apparatus includes a first switch element and a control device. The first switch element has a first connecting terminal and a second connecting terminal coupled to an output terminal of a power supply module with a relatively high power conversion rate and an output terminal of a power supply module with a second power conversion rate, respectively, and selectively allocates a power generated by the power supply module with the relatively high power conversion rate to a predetermined number of loadings simultaneously according to on or off states of the first switch element. The control device is coupled to the first switch element to control the first switch element to enter an on state or an off state.