Discharge Control Device with Segmented Circuit Paths
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Solution Overview
Problem
Existing discharge control devices fail to maintain discharge functionality when disconnections occur in the connecting portions with the discharge resistor, leading to incomplete discharge of the capacitor's stored electric charge.
Innovation Solution
A discharge control device with a circuit board configuration that includes a first discharge resistor, a switching element, and a relay wiring, allowing for controlled conduction and disconnection of the discharge paths, ensuring continuous discharge even if connections with the positive or negative electrode wiring are lost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single discharge resistor is used with external connections, then the device structure is simple, but discharge functionality is lost when connection disconnections occur
Solution Approach 1:
The discharge circuit is segmented into multiple independent paths: a first discharge circuit with a first discharge resistor connected to the first connecting portion, and a second discharge circuit with a second discharge resistor connected between the first and second connecting portions. This segmentation ensures that if one connection fails, the other discharge path remains functional, resolving the contradiction between reliability and complexity by distributing the discharge function across multiple independent segments.
Solution Approach 2:
The patent implements beforehand cushioning by providing redundant discharge paths and connection points before connection failures can occur. The circuit board includes multiple connecting portions (first, second, third, fourth) and multiple discharge resistors arranged such that if one connection fails, alternative paths are already in place to maintain discharge functionality, preventing complete system failure.
2Reliability
If discharge resistor connections are made externally, then manufacturing is easier, but connection disconnections cause complete discharge failure
Solution Approach 1:
The patent merges multiple discharge circuits and connection points into a single integrated circuit board structure. The first discharge resistor, second discharge resistor, switching element, and multiple connecting portions are all integrated onto one circuit board, creating a unified assembly that maintains discharge functionality through multiple internal paths while simplifying manufacturing by consolidating components rather than using separate external connections.
3Ease of operation
If a switching element controls the first discharge resistor, then discharge control is precise, but the circuit complexity increases
Solution Approach 1:
The patent applies dynamics by incorporating a switching element that can dynamically control the conduction and disconnection of the first discharge resistor. The switching element enables the circuit to adapt its configuration based on operational needs, allowing precise control over the discharge process while maintaining a relatively simple overall structure through the use of standard switching components.
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 ensures that the capacitor can be effectively discharged regardless of disconnections in the connecting portions, maintaining operational integrity during maintenance or electrical disconnections.
Implementation Method 1
a first discharge resistor 6 that has one end connected to the positive electrode wiring 4a and the other end connected to the third connecting portion 5c of the circuit board 5
Implementation Method 2
The circuit board 5 includes a second discharge resistor 10 connected between the first connecting portion 5a and the second connecting portion 5b
Data Source
AI summary
If a wire is broken at a connecting portion 5a, the connection with a positive electrode wiring 4a is broken and a second discharge circuit 11 is lost. However, a first discharge resistor 6 is connected to a positive electrode wiring 4a, and a first discharge circuit 9 is maintained. If a wire is broken at a connecting portion 5b, the connection with a negative electrode wiring 4b is broken and the second discharge circuit 11 is lost. However, the switching element 7 is connected to the negative electrode wiring 4b via a board wiring 3 and a relay wiring 21, and the first discharge circuit 9 is maintained. If a wire is broken at a connecting portion 5c, the connection with the first discharge resistor 6 is broken and the first discharge circuit 9 is lost, but the second discharge circuit 11 is maintained. When a wire is broken at a connecting portion 5d, the connection between the switching element 7 and the second discharge resistor 10 is maintained at the connecting portion 5b, and the first discharge circuit 9 and the second discharge circuit 11 are maintained. According to the invention, a discharge can be maintained even if a disconnection occurs in a connecting portion with a discharge resistor.