Control power supply device
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Solution Overview
Problem
The existing control power source apparatus designs face increased costs and complexity when the control board requires power exceeding a predetermined value, necessitating multiple power source boards or separate incombustible boxes.
Innovation Solution
A control power source apparatus is configured with independent first and second load circuits, where neither exceeds the predetermined power value, allowing for cost-effective manufacturing without the need for incombustible materials, utilizing a step-down circuit outside the electric component box and a connector for alignment, and strategically placing the CPU substrate to minimize voltage drop and noise influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the control board needs electric power exceeding the predetermined value, then multiple power source boards or separate incombustible boxes are required, but this leads to increase in cost
Solution Approach 1:
The power source board is divided into multiple independent power source units (first power source unit and second power source unit), each capable of supplying power independently. Each unit is designed to supply power not exceeding a predetermined value, allowing the total system power to exceed the predetermined value without requiring multiple separate incombustible boxes or additional power source boards.
2Power
If the control board needs electric power exceeding the predetermined value, then multiple power source boards or separate incombustible boxes are required, but this leads to increase in device complexity
Solution Approach 1:
Multiple power source units are integrated onto a single power source board, which is accommodated in one incombustible electric component box. This merging approach allows the system to achieve higher total power capacity without increasing the number of separate incombustible boxes or power source boards, thereby reducing device complexity.
3Power
If a single power source board supplies power to load circuits, then the incombustible electric component box must be enlarged or additional boxes added, but this increases manufacturing cost
Solution Approach 1:
The load circuits are divided into multiple independent groups (first load circuit and second load circuit), with each group supplied by a dedicated power source unit. Each power source unit is designed to supply power not exceeding a predetermined value, allowing the total system power to exceed the predetermined value while maintaining the same incombustible box size and avoiding additional manufacturing costs.
Data Source
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AI summary
A control power source apparatus 100 includes: a power source board 2 accommodated in an electric component box 1 made of an incombustible material; a first power source unit PS 1 provided at the power source board 2 and configured to supply electric power having an upper limit of a predetermined value; a second power source unit PS2 provided at the power source board 2 and configured to supply electric power having an upper limit of a predetermined value; a first load circuit L1 provided outside the electric component box 1 and configured to be supplied with electric power from the first power source unit PS 1; and a second load circuit L2 provided outside the electric component box 1 so as to be electrically independent from the first load circuit L1, and configured to be supplied with electric power from the second power source unit PS2.